Study suggests malaria is undertreated

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RDT for malaria

A large study suggests the use of rapid diagnostic tests (RDTs) for malaria can reduce overuse of artemisinin combination therapies (ACTs), but malaria may also go untreated.

Researchers analyzed data from more than 500,000 patient visits across malaria-endemic regions of Africa and Afghanistan.

They found that, in most settings, the introduction of RDTs improved antimalarial targeting.

However, a substantial number of patients who tested positive for malaria appeared to go untreated, and negative test results prompted a shift to antibiotic prescriptions.

Katia Bruxvoort, PhD, of London School of Hygiene & Tropical Medicine in the UK, and her colleagues reported these results in the American Journal of Tropical Medicine and Hygiene.

The researchers analyzed drug prescriptions written from 2007 to 2013 in 562,368 patient encounters documented in 10 related studies. Eight studies were conducted in sub-Saharan Africa (Cameroon, Ghana, Nigeria, Tanzania, and Uganda), and 2 were conducted in Afghanistan.

Overall, RDTs appeared to limit—though not eliminate—routine prescription of ACTs to patients presenting with fever but not malaria.

In most cases, fewer than 30% of patients who tested negative for malaria still received ACTs. However, in Cameroon and Ghana, 39% to 49% of patients who tested negative for malaria received ACTs.

“[I]n many places, a reduction in the use of ACTs was accompanied by an increase in the use of antibiotics, which may drive up the risk of antibiotic-resistant infections,” Dr Bruxvoort noted.

Overall, 75% of patients studied left the clinic with either an antibiotic or an ACT.

In most areas studied, antibiotics were given to 40% to 80% of patients who had tested negative for malaria.

The researchers believe the shift to antibiotic use after ruling out malaria may indicate that many patients and providers are not comfortable treating a fever using only supportive care (taking a fever-reducing drug and drinking plenty of fluids).

“A key challenge is that we don’t currently have a reliable way to determine which fevers are evidence of a bacterial infection that requires a specific antibiotic treatment and which fevers will resolve with supportive care only,” Dr Bruxvoort said.

In addition, Dr Bruxvoort and her colleagues were surprised to find that, in 5 of the 8 African studies, more than 20% of patients who tested positive for malaria were not prescribed ACTs.

“Drug supply issues did not seem to be a problem in most of the areas where these patients sought treatment,” Dr Bruxvoort said. “There might be other reasons either patients or providers are not using ACTs in these contexts, but the issue of undertreating malaria, even when there is clear evidence of the disease, is troubling and deserves further study.”

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Photo from US Agency for International Development
RDT for malaria

A large study suggests the use of rapid diagnostic tests (RDTs) for malaria can reduce overuse of artemisinin combination therapies (ACTs), but malaria may also go untreated.

Researchers analyzed data from more than 500,000 patient visits across malaria-endemic regions of Africa and Afghanistan.

They found that, in most settings, the introduction of RDTs improved antimalarial targeting.

However, a substantial number of patients who tested positive for malaria appeared to go untreated, and negative test results prompted a shift to antibiotic prescriptions.

Katia Bruxvoort, PhD, of London School of Hygiene & Tropical Medicine in the UK, and her colleagues reported these results in the American Journal of Tropical Medicine and Hygiene.

The researchers analyzed drug prescriptions written from 2007 to 2013 in 562,368 patient encounters documented in 10 related studies. Eight studies were conducted in sub-Saharan Africa (Cameroon, Ghana, Nigeria, Tanzania, and Uganda), and 2 were conducted in Afghanistan.

Overall, RDTs appeared to limit—though not eliminate—routine prescription of ACTs to patients presenting with fever but not malaria.

In most cases, fewer than 30% of patients who tested negative for malaria still received ACTs. However, in Cameroon and Ghana, 39% to 49% of patients who tested negative for malaria received ACTs.

“[I]n many places, a reduction in the use of ACTs was accompanied by an increase in the use of antibiotics, which may drive up the risk of antibiotic-resistant infections,” Dr Bruxvoort noted.

Overall, 75% of patients studied left the clinic with either an antibiotic or an ACT.

In most areas studied, antibiotics were given to 40% to 80% of patients who had tested negative for malaria.

The researchers believe the shift to antibiotic use after ruling out malaria may indicate that many patients and providers are not comfortable treating a fever using only supportive care (taking a fever-reducing drug and drinking plenty of fluids).

“A key challenge is that we don’t currently have a reliable way to determine which fevers are evidence of a bacterial infection that requires a specific antibiotic treatment and which fevers will resolve with supportive care only,” Dr Bruxvoort said.

In addition, Dr Bruxvoort and her colleagues were surprised to find that, in 5 of the 8 African studies, more than 20% of patients who tested positive for malaria were not prescribed ACTs.

“Drug supply issues did not seem to be a problem in most of the areas where these patients sought treatment,” Dr Bruxvoort said. “There might be other reasons either patients or providers are not using ACTs in these contexts, but the issue of undertreating malaria, even when there is clear evidence of the disease, is troubling and deserves further study.”

Photo from US Agency for International Development
RDT for malaria

A large study suggests the use of rapid diagnostic tests (RDTs) for malaria can reduce overuse of artemisinin combination therapies (ACTs), but malaria may also go untreated.

Researchers analyzed data from more than 500,000 patient visits across malaria-endemic regions of Africa and Afghanistan.

They found that, in most settings, the introduction of RDTs improved antimalarial targeting.

However, a substantial number of patients who tested positive for malaria appeared to go untreated, and negative test results prompted a shift to antibiotic prescriptions.

Katia Bruxvoort, PhD, of London School of Hygiene & Tropical Medicine in the UK, and her colleagues reported these results in the American Journal of Tropical Medicine and Hygiene.

The researchers analyzed drug prescriptions written from 2007 to 2013 in 562,368 patient encounters documented in 10 related studies. Eight studies were conducted in sub-Saharan Africa (Cameroon, Ghana, Nigeria, Tanzania, and Uganda), and 2 were conducted in Afghanistan.

Overall, RDTs appeared to limit—though not eliminate—routine prescription of ACTs to patients presenting with fever but not malaria.

In most cases, fewer than 30% of patients who tested negative for malaria still received ACTs. However, in Cameroon and Ghana, 39% to 49% of patients who tested negative for malaria received ACTs.

“[I]n many places, a reduction in the use of ACTs was accompanied by an increase in the use of antibiotics, which may drive up the risk of antibiotic-resistant infections,” Dr Bruxvoort noted.

Overall, 75% of patients studied left the clinic with either an antibiotic or an ACT.

In most areas studied, antibiotics were given to 40% to 80% of patients who had tested negative for malaria.

The researchers believe the shift to antibiotic use after ruling out malaria may indicate that many patients and providers are not comfortable treating a fever using only supportive care (taking a fever-reducing drug and drinking plenty of fluids).

“A key challenge is that we don’t currently have a reliable way to determine which fevers are evidence of a bacterial infection that requires a specific antibiotic treatment and which fevers will resolve with supportive care only,” Dr Bruxvoort said.

In addition, Dr Bruxvoort and her colleagues were surprised to find that, in 5 of the 8 African studies, more than 20% of patients who tested positive for malaria were not prescribed ACTs.

“Drug supply issues did not seem to be a problem in most of the areas where these patients sought treatment,” Dr Bruxvoort said. “There might be other reasons either patients or providers are not using ACTs in these contexts, but the issue of undertreating malaria, even when there is clear evidence of the disease, is troubling and deserves further study.”

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Drug receives orphan designation for ocular GVHD

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Drug receives orphan designation for ocular GVHD

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Hematopoietic stem cell transplant preparation

The US Food and Drug Administration (FDA) has granted orphan drug designation to OCU300 (brimonidine tartrate) for the treatment of ocular graft-versus-host disease (oGVHD) occurring after allogeneic hematopoietic stem cell transplant.

Brimonidine tartrate is an alpha adrenergic agonist that is already FDA-approved to lower intraocular pressure in patients with open-angle glaucoma or ocular hypertension.

Ocugen Inc. is repurposing the drug as OCU300 for the treatment of oGVHD under the FDA’s 505(b)(2) regulatory pathway.

“We are very excited to receive the first-ever orphan drug designation by the FDA for oGVHD, emphasizing the unmet medical need for patients with this disease,” said Shankar Musunuri, PhD, chairman, chief executive officer, and co-founder of Ocugen Inc.

“This is a significant milestone that will allow us to further advance the clinical development of OCU300, with a proprietary nanoemulsion, into a phase 3 clinical trial in the near future.”

According to Ocugen, OCU300 produced a beneficial effect in 90% of patients with oGVHD in an observational study, and the drug did not produce significant side effects.

About orphan designation

The FDA grants orphan designation to drugs and biologics intended to treat, diagnose, or prevent diseases/disorders that affect fewer than 200,000 people in the US.

The designation provides incentives for sponsors to develop products for rare diseases. This may include tax credits toward the cost of clinical trials, prescription drug user fee waivers, and 7 years of market exclusivity if the product is approved.

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Photo by Chad McNeeley
Hematopoietic stem cell transplant preparation

The US Food and Drug Administration (FDA) has granted orphan drug designation to OCU300 (brimonidine tartrate) for the treatment of ocular graft-versus-host disease (oGVHD) occurring after allogeneic hematopoietic stem cell transplant.

Brimonidine tartrate is an alpha adrenergic agonist that is already FDA-approved to lower intraocular pressure in patients with open-angle glaucoma or ocular hypertension.

Ocugen Inc. is repurposing the drug as OCU300 for the treatment of oGVHD under the FDA’s 505(b)(2) regulatory pathway.

“We are very excited to receive the first-ever orphan drug designation by the FDA for oGVHD, emphasizing the unmet medical need for patients with this disease,” said Shankar Musunuri, PhD, chairman, chief executive officer, and co-founder of Ocugen Inc.

“This is a significant milestone that will allow us to further advance the clinical development of OCU300, with a proprietary nanoemulsion, into a phase 3 clinical trial in the near future.”

According to Ocugen, OCU300 produced a beneficial effect in 90% of patients with oGVHD in an observational study, and the drug did not produce significant side effects.

About orphan designation

The FDA grants orphan designation to drugs and biologics intended to treat, diagnose, or prevent diseases/disorders that affect fewer than 200,000 people in the US.

The designation provides incentives for sponsors to develop products for rare diseases. This may include tax credits toward the cost of clinical trials, prescription drug user fee waivers, and 7 years of market exclusivity if the product is approved.

Photo by Chad McNeeley
Hematopoietic stem cell transplant preparation

The US Food and Drug Administration (FDA) has granted orphan drug designation to OCU300 (brimonidine tartrate) for the treatment of ocular graft-versus-host disease (oGVHD) occurring after allogeneic hematopoietic stem cell transplant.

Brimonidine tartrate is an alpha adrenergic agonist that is already FDA-approved to lower intraocular pressure in patients with open-angle glaucoma or ocular hypertension.

Ocugen Inc. is repurposing the drug as OCU300 for the treatment of oGVHD under the FDA’s 505(b)(2) regulatory pathway.

“We are very excited to receive the first-ever orphan drug designation by the FDA for oGVHD, emphasizing the unmet medical need for patients with this disease,” said Shankar Musunuri, PhD, chairman, chief executive officer, and co-founder of Ocugen Inc.

“This is a significant milestone that will allow us to further advance the clinical development of OCU300, with a proprietary nanoemulsion, into a phase 3 clinical trial in the near future.”

According to Ocugen, OCU300 produced a beneficial effect in 90% of patients with oGVHD in an observational study, and the drug did not produce significant side effects.

About orphan designation

The FDA grants orphan designation to drugs and biologics intended to treat, diagnose, or prevent diseases/disorders that affect fewer than 200,000 people in the US.

The designation provides incentives for sponsors to develop products for rare diseases. This may include tax credits toward the cost of clinical trials, prescription drug user fee waivers, and 7 years of market exclusivity if the product is approved.

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Rash and skin discoloration

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Rash and skin discoloration

 

The FP diagnosed plaque psoriasis as the cause of the erythema and scale. The FP suspected vitiligo or postinflammatory hypopigmentation as the cause of the discoloration. (It’s not unusual for patients with psoriasis to have vitiligo, as well.) The FP referred the patient to a dermatologist for a diagnosis, but never received feedback.

When diagnosing psoriasis, it’s crucial to determine if it’s accompanied by psoriatic arthritis. That’s because the presence of arthritis requires systemic therapy to prevent further joint damage. In this case, the patient denied having joint pain and morning stiffness.

Smoking tobacco and drinking excessive amounts of alcohol are both risk factors for psoriasis. The FP started treatment by discussing lifestyle changes and emphasizing the importance of abstinence from tobacco. While the patient wouldn’t set a quit date, he agreed to cut his intake down to half a pack of cigarettes a day. He also agreed to limit his consumption of alcohol to 2 beers a day. In addition, the FP prescribed a 454-g tub of 0.1% triamcinolone ointment to be applied twice daily. The ointment is more effective, but some patients may prefer the less greasy feel of a cream.

At a follow-up appointment a year later, the patient’s plaque psoriasis was under better control. His hands, however, showed extensive depigmentation. This confirmed the diagnosis of vitiligo, but the patient was not bothered by the appearance of it.

 

Photos and text for Photo Rounds Friday courtesy of Richard P. Usatine, MD. This case was adapted from: Usatine R. Psoriasis. In: Usatine R, Smith M, Mayeaux EJ, et al, eds. Color Atlas of Family Medicine. 2nd ed. New York, NY: McGraw-Hill; 2013: 878-895.

To learn more about the Color Atlas of Family Medicine, see: www.amazon.com/Color-Family-Medicine-Richard-Usatine/dp/0071769641/

You can now get the second edition of the Color Atlas of Family Medicine as an app by clicking on this link: usatinemedia.com

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The FP diagnosed plaque psoriasis as the cause of the erythema and scale. The FP suspected vitiligo or postinflammatory hypopigmentation as the cause of the discoloration. (It’s not unusual for patients with psoriasis to have vitiligo, as well.) The FP referred the patient to a dermatologist for a diagnosis, but never received feedback.

When diagnosing psoriasis, it’s crucial to determine if it’s accompanied by psoriatic arthritis. That’s because the presence of arthritis requires systemic therapy to prevent further joint damage. In this case, the patient denied having joint pain and morning stiffness.

Smoking tobacco and drinking excessive amounts of alcohol are both risk factors for psoriasis. The FP started treatment by discussing lifestyle changes and emphasizing the importance of abstinence from tobacco. While the patient wouldn’t set a quit date, he agreed to cut his intake down to half a pack of cigarettes a day. He also agreed to limit his consumption of alcohol to 2 beers a day. In addition, the FP prescribed a 454-g tub of 0.1% triamcinolone ointment to be applied twice daily. The ointment is more effective, but some patients may prefer the less greasy feel of a cream.

At a follow-up appointment a year later, the patient’s plaque psoriasis was under better control. His hands, however, showed extensive depigmentation. This confirmed the diagnosis of vitiligo, but the patient was not bothered by the appearance of it.

 

Photos and text for Photo Rounds Friday courtesy of Richard P. Usatine, MD. This case was adapted from: Usatine R. Psoriasis. In: Usatine R, Smith M, Mayeaux EJ, et al, eds. Color Atlas of Family Medicine. 2nd ed. New York, NY: McGraw-Hill; 2013: 878-895.

To learn more about the Color Atlas of Family Medicine, see: www.amazon.com/Color-Family-Medicine-Richard-Usatine/dp/0071769641/

You can now get the second edition of the Color Atlas of Family Medicine as an app by clicking on this link: usatinemedia.com

 

The FP diagnosed plaque psoriasis as the cause of the erythema and scale. The FP suspected vitiligo or postinflammatory hypopigmentation as the cause of the discoloration. (It’s not unusual for patients with psoriasis to have vitiligo, as well.) The FP referred the patient to a dermatologist for a diagnosis, but never received feedback.

When diagnosing psoriasis, it’s crucial to determine if it’s accompanied by psoriatic arthritis. That’s because the presence of arthritis requires systemic therapy to prevent further joint damage. In this case, the patient denied having joint pain and morning stiffness.

Smoking tobacco and drinking excessive amounts of alcohol are both risk factors for psoriasis. The FP started treatment by discussing lifestyle changes and emphasizing the importance of abstinence from tobacco. While the patient wouldn’t set a quit date, he agreed to cut his intake down to half a pack of cigarettes a day. He also agreed to limit his consumption of alcohol to 2 beers a day. In addition, the FP prescribed a 454-g tub of 0.1% triamcinolone ointment to be applied twice daily. The ointment is more effective, but some patients may prefer the less greasy feel of a cream.

At a follow-up appointment a year later, the patient’s plaque psoriasis was under better control. His hands, however, showed extensive depigmentation. This confirmed the diagnosis of vitiligo, but the patient was not bothered by the appearance of it.

 

Photos and text for Photo Rounds Friday courtesy of Richard P. Usatine, MD. This case was adapted from: Usatine R. Psoriasis. In: Usatine R, Smith M, Mayeaux EJ, et al, eds. Color Atlas of Family Medicine. 2nd ed. New York, NY: McGraw-Hill; 2013: 878-895.

To learn more about the Color Atlas of Family Medicine, see: www.amazon.com/Color-Family-Medicine-Richard-Usatine/dp/0071769641/

You can now get the second edition of the Color Atlas of Family Medicine as an app by clicking on this link: usatinemedia.com

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U.S. opioid, heroin overdose deaths may be one-fifth higher than reported

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The lack of detail on which drug is involved in a fatal overdose may be causing a significant underestimation of the rates of opioid and heroin mortality across the United States.

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The study attempted to address the estimated one-fifth to one-quarter of death certificates for fatal overdoses in which no specific drug is identified. “This leads to an underestimate of the involvement rates of specific drugs at a point in time and additional errors when measuring changes in drug involvement rates across time,” Dr. Ruhm wrote.

To correct for this, Dr. Ruhm extrapolated the drug category in these unspecified cases by using information from death certificate reports where at least one specific drug category was identified as the cause of death. The variables considered included sex, ethnicity, marital status, education, day of the week indicators, location of death (such as hospital inpatient or ED) or arriving at the hospital already deceased, and interactions among these variables.

“The corrected rates provide the best currently available information on geographic variation in opioid and heroin involved fatality rates,” Dr. Ruhm noted.

The differences between corrected and reported rates of fatal opioid and heroin overdose varied significantly between states; in some cases, the correct rates were more than double the reported rates.

In Pennsylvania, for example, the corrected rates of opioid and heroin overdose fatalities were 108% and 107% greater than the reported rates, respectively; in Mississippi, the corrected rates were 107% and 139% higher than reported. Alabama, Indiana, and Louisiana also showed large disparities between corrected and reported rates.

Dr. Ruhm also noted significant variability between the states in whether a specific drug was mentioned on the death certificate or not. In Rhode Island, Connecticut, and New Hampshire, a drug category was mentioned for more than 99% of drug poisoning deaths; but in Pennsylvania, Indiana, Mississippi, Louisiana, and Alabama, this was reported in only about half of these incidents.

There was a general trend toward underreporting in the South, while rates of nonreporting were lower in parts of the Northeast and the West.

Dr. Ruhm suggested that additional training and standardization could be helpful in states with low specification rates, “particularly because this is a bigger problem when death certificates are completed by coroners rather than medical examiners and in states without centralized oversight.”

Overall, the growth in opioid-involved drug deaths from 2008 to 2014 was similar between the reported and corrected rates. However, in the case of heroin-related mortality, the increase was underestimated by the reported data by about 18%. Again, this difference varied between states, with substantial underestimates seen in Pennsylvania, Indiana, New Jersey, Louisiana, and Alabama.

“Understanding the inaccuracies resulting from the lack of specificity of drug involvement on death certificates is also important because federal policies often target states believed to have especially severe opioid or heroin problems,” Dr. Ruhm explained. “More fundamentally, geographic disparities in drug poisoning deaths are substantial, and a correct assessment of them is almost certainly a prerequisite for designing policies to address the fatal drug epidemic.”

Dr. Ruhm declared no conflicts of interest.

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The lack of detail on which drug is involved in a fatal overdose may be causing a significant underestimation of the rates of opioid and heroin mortality across the United States.

PaulPaladin/thinkstock
The study attempted to address the estimated one-fifth to one-quarter of death certificates for fatal overdoses in which no specific drug is identified. “This leads to an underestimate of the involvement rates of specific drugs at a point in time and additional errors when measuring changes in drug involvement rates across time,” Dr. Ruhm wrote.

To correct for this, Dr. Ruhm extrapolated the drug category in these unspecified cases by using information from death certificate reports where at least one specific drug category was identified as the cause of death. The variables considered included sex, ethnicity, marital status, education, day of the week indicators, location of death (such as hospital inpatient or ED) or arriving at the hospital already deceased, and interactions among these variables.

“The corrected rates provide the best currently available information on geographic variation in opioid and heroin involved fatality rates,” Dr. Ruhm noted.

The differences between corrected and reported rates of fatal opioid and heroin overdose varied significantly between states; in some cases, the correct rates were more than double the reported rates.

In Pennsylvania, for example, the corrected rates of opioid and heroin overdose fatalities were 108% and 107% greater than the reported rates, respectively; in Mississippi, the corrected rates were 107% and 139% higher than reported. Alabama, Indiana, and Louisiana also showed large disparities between corrected and reported rates.

Dr. Ruhm also noted significant variability between the states in whether a specific drug was mentioned on the death certificate or not. In Rhode Island, Connecticut, and New Hampshire, a drug category was mentioned for more than 99% of drug poisoning deaths; but in Pennsylvania, Indiana, Mississippi, Louisiana, and Alabama, this was reported in only about half of these incidents.

There was a general trend toward underreporting in the South, while rates of nonreporting were lower in parts of the Northeast and the West.

Dr. Ruhm suggested that additional training and standardization could be helpful in states with low specification rates, “particularly because this is a bigger problem when death certificates are completed by coroners rather than medical examiners and in states without centralized oversight.”

Overall, the growth in opioid-involved drug deaths from 2008 to 2014 was similar between the reported and corrected rates. However, in the case of heroin-related mortality, the increase was underestimated by the reported data by about 18%. Again, this difference varied between states, with substantial underestimates seen in Pennsylvania, Indiana, New Jersey, Louisiana, and Alabama.

“Understanding the inaccuracies resulting from the lack of specificity of drug involvement on death certificates is also important because federal policies often target states believed to have especially severe opioid or heroin problems,” Dr. Ruhm explained. “More fundamentally, geographic disparities in drug poisoning deaths are substantial, and a correct assessment of them is almost certainly a prerequisite for designing policies to address the fatal drug epidemic.”

Dr. Ruhm declared no conflicts of interest.

 

The lack of detail on which drug is involved in a fatal overdose may be causing a significant underestimation of the rates of opioid and heroin mortality across the United States.

PaulPaladin/thinkstock
The study attempted to address the estimated one-fifth to one-quarter of death certificates for fatal overdoses in which no specific drug is identified. “This leads to an underestimate of the involvement rates of specific drugs at a point in time and additional errors when measuring changes in drug involvement rates across time,” Dr. Ruhm wrote.

To correct for this, Dr. Ruhm extrapolated the drug category in these unspecified cases by using information from death certificate reports where at least one specific drug category was identified as the cause of death. The variables considered included sex, ethnicity, marital status, education, day of the week indicators, location of death (such as hospital inpatient or ED) or arriving at the hospital already deceased, and interactions among these variables.

“The corrected rates provide the best currently available information on geographic variation in opioid and heroin involved fatality rates,” Dr. Ruhm noted.

The differences between corrected and reported rates of fatal opioid and heroin overdose varied significantly between states; in some cases, the correct rates were more than double the reported rates.

In Pennsylvania, for example, the corrected rates of opioid and heroin overdose fatalities were 108% and 107% greater than the reported rates, respectively; in Mississippi, the corrected rates were 107% and 139% higher than reported. Alabama, Indiana, and Louisiana also showed large disparities between corrected and reported rates.

Dr. Ruhm also noted significant variability between the states in whether a specific drug was mentioned on the death certificate or not. In Rhode Island, Connecticut, and New Hampshire, a drug category was mentioned for more than 99% of drug poisoning deaths; but in Pennsylvania, Indiana, Mississippi, Louisiana, and Alabama, this was reported in only about half of these incidents.

There was a general trend toward underreporting in the South, while rates of nonreporting were lower in parts of the Northeast and the West.

Dr. Ruhm suggested that additional training and standardization could be helpful in states with low specification rates, “particularly because this is a bigger problem when death certificates are completed by coroners rather than medical examiners and in states without centralized oversight.”

Overall, the growth in opioid-involved drug deaths from 2008 to 2014 was similar between the reported and corrected rates. However, in the case of heroin-related mortality, the increase was underestimated by the reported data by about 18%. Again, this difference varied between states, with substantial underestimates seen in Pennsylvania, Indiana, New Jersey, Louisiana, and Alabama.

“Understanding the inaccuracies resulting from the lack of specificity of drug involvement on death certificates is also important because federal policies often target states believed to have especially severe opioid or heroin problems,” Dr. Ruhm explained. “More fundamentally, geographic disparities in drug poisoning deaths are substantial, and a correct assessment of them is almost certainly a prerequisite for designing policies to address the fatal drug epidemic.”

Dr. Ruhm declared no conflicts of interest.

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FROM THE AMERICAN JOURNAL OF PREVENTIVE MEDICINE

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Key clinical point: Death certificates for drug overdose that fail to specify the drug ivolved may be responsible for a significant underestimation of opioid and heroin fatality rates in the United States.

Major finding: In 2014, national opioid mortality rates were actually 24% greater than reported, and heroin overdose fatality rates were 22% higher than reported.

Data source: Analysis using improved estimates of state-level opioid and heroin overdose fatalities during 2014 and of changes over time during 2008-2014.

Disclosures: No conflicts of interest were declared.

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C-section raises hysterectomy complication risk later

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Wed, 01/02/2019 - 09:57

 

Women who have at least one cesarean delivery have a more than 30% risk of a complication requiring reoperation after benign hysterectomy later in life, compared with women who have had vaginal deliveries only, according to a study of more than 7,600 women in a Danish patient registry.

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The Danish study, led by Sofie A.I. Lindquist, MD, of Aalborg (Denmark) University, used the Danish nationwide registry of all women who gave birth for the first time between Jan. 1, 1993, and Dec. 31, 2012, and underwent a benign hysterectomy between Jan. 1, 1996, and Dec. 31, 2012. In all, 7,685 women met inclusion criteria for the study; 69% of the women had no previous cesarean delivery, 22% had one cesarean delivery, and 9% two or more cesarean deliveries (JAMA Surg. 2017 Aug 9. doi: 10.1001/jamasurg.2017.2825).

Of the 388 women (5%) who had a hysterectomy and then a reoperation within 30 days, the risk increased with the number of previous cesarean deliveries. Those who had vaginal-only deliveries had reoperation rates of 4.4%, compared with 6.2% for those who had one cesarean delivery and 6.8% for those who had two or more. That represents increased risks of 31% and 35% for women who had one cesarean delivery and two or more cesarean deliveries, respectively, compared with women who had only vaginal deliveries.

Likewise, surgical complications were 16% more frequent in women who had one previous cesarean delivery and 30% more likely in women with two or more cesarean deliveries. Women who had two or more cesarean deliveries were almost twice as likely (odds ratio, 1.93) to receive a blood transfusion.

“Our results imply that information on long-term associations should be made more readily available to women, clinicians, and policymakers and suggest that decisions on cesarean delivery should take into account not only immediate maternal and neonatal influences, but also women’s health in the long term, including an increased risk of reoperation and complications associated with surgery later in life,” the researchers wrote. “The results support policies and clinical efforts to prevent cesarean deliveries that are not medically indicated.”

The study noted some limitations, including the observational design, which did not allow for elimination of all potential confounding factors.

The researchers reported having no relevant financial disclosures.

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Women who have at least one cesarean delivery have a more than 30% risk of a complication requiring reoperation after benign hysterectomy later in life, compared with women who have had vaginal deliveries only, according to a study of more than 7,600 women in a Danish patient registry.

AngelIce/Thinkstock
The Danish study, led by Sofie A.I. Lindquist, MD, of Aalborg (Denmark) University, used the Danish nationwide registry of all women who gave birth for the first time between Jan. 1, 1993, and Dec. 31, 2012, and underwent a benign hysterectomy between Jan. 1, 1996, and Dec. 31, 2012. In all, 7,685 women met inclusion criteria for the study; 69% of the women had no previous cesarean delivery, 22% had one cesarean delivery, and 9% two or more cesarean deliveries (JAMA Surg. 2017 Aug 9. doi: 10.1001/jamasurg.2017.2825).

Of the 388 women (5%) who had a hysterectomy and then a reoperation within 30 days, the risk increased with the number of previous cesarean deliveries. Those who had vaginal-only deliveries had reoperation rates of 4.4%, compared with 6.2% for those who had one cesarean delivery and 6.8% for those who had two or more. That represents increased risks of 31% and 35% for women who had one cesarean delivery and two or more cesarean deliveries, respectively, compared with women who had only vaginal deliveries.

Likewise, surgical complications were 16% more frequent in women who had one previous cesarean delivery and 30% more likely in women with two or more cesarean deliveries. Women who had two or more cesarean deliveries were almost twice as likely (odds ratio, 1.93) to receive a blood transfusion.

“Our results imply that information on long-term associations should be made more readily available to women, clinicians, and policymakers and suggest that decisions on cesarean delivery should take into account not only immediate maternal and neonatal influences, but also women’s health in the long term, including an increased risk of reoperation and complications associated with surgery later in life,” the researchers wrote. “The results support policies and clinical efforts to prevent cesarean deliveries that are not medically indicated.”

The study noted some limitations, including the observational design, which did not allow for elimination of all potential confounding factors.

The researchers reported having no relevant financial disclosures.

 

Women who have at least one cesarean delivery have a more than 30% risk of a complication requiring reoperation after benign hysterectomy later in life, compared with women who have had vaginal deliveries only, according to a study of more than 7,600 women in a Danish patient registry.

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The Danish study, led by Sofie A.I. Lindquist, MD, of Aalborg (Denmark) University, used the Danish nationwide registry of all women who gave birth for the first time between Jan. 1, 1993, and Dec. 31, 2012, and underwent a benign hysterectomy between Jan. 1, 1996, and Dec. 31, 2012. In all, 7,685 women met inclusion criteria for the study; 69% of the women had no previous cesarean delivery, 22% had one cesarean delivery, and 9% two or more cesarean deliveries (JAMA Surg. 2017 Aug 9. doi: 10.1001/jamasurg.2017.2825).

Of the 388 women (5%) who had a hysterectomy and then a reoperation within 30 days, the risk increased with the number of previous cesarean deliveries. Those who had vaginal-only deliveries had reoperation rates of 4.4%, compared with 6.2% for those who had one cesarean delivery and 6.8% for those who had two or more. That represents increased risks of 31% and 35% for women who had one cesarean delivery and two or more cesarean deliveries, respectively, compared with women who had only vaginal deliveries.

Likewise, surgical complications were 16% more frequent in women who had one previous cesarean delivery and 30% more likely in women with two or more cesarean deliveries. Women who had two or more cesarean deliveries were almost twice as likely (odds ratio, 1.93) to receive a blood transfusion.

“Our results imply that information on long-term associations should be made more readily available to women, clinicians, and policymakers and suggest that decisions on cesarean delivery should take into account not only immediate maternal and neonatal influences, but also women’s health in the long term, including an increased risk of reoperation and complications associated with surgery later in life,” the researchers wrote. “The results support policies and clinical efforts to prevent cesarean deliveries that are not medically indicated.”

The study noted some limitations, including the observational design, which did not allow for elimination of all potential confounding factors.

The researchers reported having no relevant financial disclosures.

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Key clinical point: Women who have had cesarean delivery face an increased risk of complications if they later have a hysterectomy.

Major finding: The rate of complications after hysterectomy was 4.4% for women who had vaginal birth only, 6.2% for those who had one cesarean delivery, and 6.8% for those who had two or more cesarean deliveries.

Data source: Danish National Patient Registry–based cohort study of 7,685 women who gave birth from 1993 to 2012.

Disclosures: The researchers reported having no financial disclosures.

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FDA approves first spironolactone oral suspension

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The Food and Drug Administration has approved CaroSpir, the first oral suspension form of spironolactone, the aldosterone antagonist that was first approved in 1960, according to an announcement from CMP Pharma.

CaroSpir is intended for the treatment of New York Heart Association class III-IV heart failure and reduced ejection fraction, usually in combination with other treatments. CaroSpir is also indicated as an add-on medication for the treatment of hypertension, and for the treatment of edema in cirrhotic patients who have not adequately responded to fluid and sodium restriction.

CaroSpir is contraindicated for patients who have hyperkalemia or Addison’s disease, or who are currently using eplerenone. The most common adverse events associated with CaroSpir are hyperkalemia, hypotension, and worsening renal function; electrolyte and metabolic abnormalities; gynecomastia; and impaired neurological function/coma in patients with hepatic impairment, cirrhosis, and ascites.

“CaroSpir provides a stable, ready to use, and consistent liquid treatment option for adult patients. Up until now, these patients have been prescribed a pharmacy-compounded liquid form of spironolactone. The dosing inconsistencies of compounded liquids have long been a persistent challenge for physicians,” Gerald Sakowski, CEO at CMP Pharma, said in the press release.

Find the full press release on the CMP Pharma website.

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The Food and Drug Administration has approved CaroSpir, the first oral suspension form of spironolactone, the aldosterone antagonist that was first approved in 1960, according to an announcement from CMP Pharma.

CaroSpir is intended for the treatment of New York Heart Association class III-IV heart failure and reduced ejection fraction, usually in combination with other treatments. CaroSpir is also indicated as an add-on medication for the treatment of hypertension, and for the treatment of edema in cirrhotic patients who have not adequately responded to fluid and sodium restriction.

CaroSpir is contraindicated for patients who have hyperkalemia or Addison’s disease, or who are currently using eplerenone. The most common adverse events associated with CaroSpir are hyperkalemia, hypotension, and worsening renal function; electrolyte and metabolic abnormalities; gynecomastia; and impaired neurological function/coma in patients with hepatic impairment, cirrhosis, and ascites.

“CaroSpir provides a stable, ready to use, and consistent liquid treatment option for adult patients. Up until now, these patients have been prescribed a pharmacy-compounded liquid form of spironolactone. The dosing inconsistencies of compounded liquids have long been a persistent challenge for physicians,” Gerald Sakowski, CEO at CMP Pharma, said in the press release.

Find the full press release on the CMP Pharma website.

 

The Food and Drug Administration has approved CaroSpir, the first oral suspension form of spironolactone, the aldosterone antagonist that was first approved in 1960, according to an announcement from CMP Pharma.

CaroSpir is intended for the treatment of New York Heart Association class III-IV heart failure and reduced ejection fraction, usually in combination with other treatments. CaroSpir is also indicated as an add-on medication for the treatment of hypertension, and for the treatment of edema in cirrhotic patients who have not adequately responded to fluid and sodium restriction.

CaroSpir is contraindicated for patients who have hyperkalemia or Addison’s disease, or who are currently using eplerenone. The most common adverse events associated with CaroSpir are hyperkalemia, hypotension, and worsening renal function; electrolyte and metabolic abnormalities; gynecomastia; and impaired neurological function/coma in patients with hepatic impairment, cirrhosis, and ascites.

“CaroSpir provides a stable, ready to use, and consistent liquid treatment option for adult patients. Up until now, these patients have been prescribed a pharmacy-compounded liquid form of spironolactone. The dosing inconsistencies of compounded liquids have long been a persistent challenge for physicians,” Gerald Sakowski, CEO at CMP Pharma, said in the press release.

Find the full press release on the CMP Pharma website.

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Inactivated flu vaccine more effective than live version

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The inactivated influenza vaccine is more effective than the quadrivalent live attenuated vaccine, according to a study conducted by the Influenza Vaccine Effectiveness Network.

After poor live vaccine performance in young children during the 2013-2014 flu season, the A(H1N1)pdm09 strain was changed. In response to earlier reports that the A(H1N1)pdm09 vaccine strain had poor thermostability, it was updated to A/Bolivia/559/2013 (an A/California/7/2009-like virus) for the 2015-2016 influenza season. Unfortunately, the changes did not increase the vaccine’s immunogenicity. At study sites in Michigan, Pennsylvania, Texas, Washington, and Wisconsin, 6,879 patients aged 6 months or older who presented for acute respiratory illness with a cough of 7 or fewer days were tested for influenza. Of those, 1,309 (19%) tested positive. Vaccination histories were taken from parent interviews and electronic health records.

Yarinca/Stockphoto
Vaccine effectiveness was estimated to be 48% in all age groups and for each virus subtype or lineage (95% confidence interval, 41-55; P less than .001); however, significant effectiveness was observed for only the inactivated influenza vaccine (P less than .001), compared with the quadrivalent live attenuated vaccine (P = .86), according to Michael L. Jackson, PhD, associate investigator at the Kaiser Permanente Washington Health Research Institute, and his coauthors. The 136 children who received the live vaccine were significantly more likely to contract influenza than the 682 children who received the inactivated vaccine (odds ratio, 2.7; 95% CI, 1.6-4.6; P less than .001), without any significant benefit over those who received no vaccine (live vaccine effectiveness, 5%; 95% CI, –47 to 39; P = .8). Looking specifically at children aged 2-17 years old, the risk of influenza was not significantly lower among those who received the quadrivalent live attenuated influenza vaccine than among those who received no vaccine; the inactivated vaccine had a marked benefit over no vaccine (vaccine effectiveness, 60%; 95% CI, 47-70; P less than .001).

“Although the quadrivalent live attenuated vaccine remains licensed in the United States, the [Advisory Committee on Immunization Practices] did not recommend this vaccine for the 2016-2017 influenza season,” the investigators wrote.

Partial funding for the research came from the Centers for Disease Control and Prevention and the National Institutes of Health. Dr. Jackson reported receiving a grant from Medimmune.

Read more in the New England Journal of Medicine (2017;377:534-43).
 

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The inactivated influenza vaccine is more effective than the quadrivalent live attenuated vaccine, according to a study conducted by the Influenza Vaccine Effectiveness Network.

After poor live vaccine performance in young children during the 2013-2014 flu season, the A(H1N1)pdm09 strain was changed. In response to earlier reports that the A(H1N1)pdm09 vaccine strain had poor thermostability, it was updated to A/Bolivia/559/2013 (an A/California/7/2009-like virus) for the 2015-2016 influenza season. Unfortunately, the changes did not increase the vaccine’s immunogenicity. At study sites in Michigan, Pennsylvania, Texas, Washington, and Wisconsin, 6,879 patients aged 6 months or older who presented for acute respiratory illness with a cough of 7 or fewer days were tested for influenza. Of those, 1,309 (19%) tested positive. Vaccination histories were taken from parent interviews and electronic health records.

Yarinca/Stockphoto
Vaccine effectiveness was estimated to be 48% in all age groups and for each virus subtype or lineage (95% confidence interval, 41-55; P less than .001); however, significant effectiveness was observed for only the inactivated influenza vaccine (P less than .001), compared with the quadrivalent live attenuated vaccine (P = .86), according to Michael L. Jackson, PhD, associate investigator at the Kaiser Permanente Washington Health Research Institute, and his coauthors. The 136 children who received the live vaccine were significantly more likely to contract influenza than the 682 children who received the inactivated vaccine (odds ratio, 2.7; 95% CI, 1.6-4.6; P less than .001), without any significant benefit over those who received no vaccine (live vaccine effectiveness, 5%; 95% CI, –47 to 39; P = .8). Looking specifically at children aged 2-17 years old, the risk of influenza was not significantly lower among those who received the quadrivalent live attenuated influenza vaccine than among those who received no vaccine; the inactivated vaccine had a marked benefit over no vaccine (vaccine effectiveness, 60%; 95% CI, 47-70; P less than .001).

“Although the quadrivalent live attenuated vaccine remains licensed in the United States, the [Advisory Committee on Immunization Practices] did not recommend this vaccine for the 2016-2017 influenza season,” the investigators wrote.

Partial funding for the research came from the Centers for Disease Control and Prevention and the National Institutes of Health. Dr. Jackson reported receiving a grant from Medimmune.

Read more in the New England Journal of Medicine (2017;377:534-43).
 

 

The inactivated influenza vaccine is more effective than the quadrivalent live attenuated vaccine, according to a study conducted by the Influenza Vaccine Effectiveness Network.

After poor live vaccine performance in young children during the 2013-2014 flu season, the A(H1N1)pdm09 strain was changed. In response to earlier reports that the A(H1N1)pdm09 vaccine strain had poor thermostability, it was updated to A/Bolivia/559/2013 (an A/California/7/2009-like virus) for the 2015-2016 influenza season. Unfortunately, the changes did not increase the vaccine’s immunogenicity. At study sites in Michigan, Pennsylvania, Texas, Washington, and Wisconsin, 6,879 patients aged 6 months or older who presented for acute respiratory illness with a cough of 7 or fewer days were tested for influenza. Of those, 1,309 (19%) tested positive. Vaccination histories were taken from parent interviews and electronic health records.

Yarinca/Stockphoto
Vaccine effectiveness was estimated to be 48% in all age groups and for each virus subtype or lineage (95% confidence interval, 41-55; P less than .001); however, significant effectiveness was observed for only the inactivated influenza vaccine (P less than .001), compared with the quadrivalent live attenuated vaccine (P = .86), according to Michael L. Jackson, PhD, associate investigator at the Kaiser Permanente Washington Health Research Institute, and his coauthors. The 136 children who received the live vaccine were significantly more likely to contract influenza than the 682 children who received the inactivated vaccine (odds ratio, 2.7; 95% CI, 1.6-4.6; P less than .001), without any significant benefit over those who received no vaccine (live vaccine effectiveness, 5%; 95% CI, –47 to 39; P = .8). Looking specifically at children aged 2-17 years old, the risk of influenza was not significantly lower among those who received the quadrivalent live attenuated influenza vaccine than among those who received no vaccine; the inactivated vaccine had a marked benefit over no vaccine (vaccine effectiveness, 60%; 95% CI, 47-70; P less than .001).

“Although the quadrivalent live attenuated vaccine remains licensed in the United States, the [Advisory Committee on Immunization Practices] did not recommend this vaccine for the 2016-2017 influenza season,” the investigators wrote.

Partial funding for the research came from the Centers for Disease Control and Prevention and the National Institutes of Health. Dr. Jackson reported receiving a grant from Medimmune.

Read more in the New England Journal of Medicine (2017;377:534-43).
 

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Researchers identify ‘congenital NAD deficiency disorders’

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Mutations that disrupt de novo synthesis of nicotinamide adenine dinucleotide (NAD) were associated with multiple congenital malformations in humans and mice, and supplementing niacin during gestation prevented these malformations in mice, new research suggests.

The malformations include vertebral defects, anal atresia, cardiac defects, tracheoesophageal fistula, renal anomalies, and limb abnormalities (VACTERL), “a nonrandom combination of congenital defects without a known cause,” wrote Hongjun Shi, PhD, of Victor Chang Cardiac Research Institute, New South Wales, Australia, and colleagues (N Engl J Med. 2017;377:544-52).

Numerous genetic and environmental factors can potentially cause NAD deficiency during gestation and the investigators suggested collectively referring to the resulting malformations as “congenital NAD deficiency disorders.”

Congenital defects can occur together in newborns more often than would be expected by chance, but “in many such cases, it has proved difficult to identify a genetic cause,” the investigators noted. Using genomic sequencing, they looked for possible pathogenic gene variants within four unrelated families in which a person was born with multiple congenital malformations. Next, they evaluated the function of the variants by testing in vitro enzyme activity and measuring relevant plasma metabolites. Finally, they used the CRISPR (clustered regularly interspaced short palindromic repeats)–Cas9 system to create mouse models with similar variants.

This approach identified variants in two genes encoding enzymes of the kynurenine pathway: 3-hydroxyanthranilic acid 3,4-dioxygenase (HAAO) and kynureninase (KYNU). Three patients had homozygous variants associated with loss-of-function changes in these proteins. A fourth patient had heterozygous variants in the gene encoding KYNU.

“The mutant enzymes had greatly reduced activity in vitro,” the researchers wrote. Patients had decreased circulating levels of NAD, which tryptophan synthesizes through the kynurenine pathway. Notably, mouse embryos lacking the mouse equivalents of HAAO or KYNU also had congenital defects associated with NAD deficiency. Preventing NAD deficiency during gestation averted these defects in mice.

“The NAD de novo synthesis pathway catabolizes tryptophan,” the researchers added. “Although metabolite levels upstream of the block are elevated, and the metabolites have postnatal functions, we found that it is the deficiency in embryonic NAD, downstream of the block, that is disrupting embryogenesis.”

The study was supported by the Australian and New South Wales governments and foundations. The investigators reported having no other financial disclosures.

Body

 

Shi et al. report that a deficiency of nicotinamide adenine dinucleotide (NAD) causes congenital malformations, suggesting that interventions to raise NAD levels during fetal and early postnatal development might further reduce the incidence of congenital anomalies.

Regardless of how NAD depletion leads to congenital malformations (whether by compromising the detection of DNA damage by PARP proteins, reducing the supply of nucleotides, or both), dietary supplementation with NAD precursors merits further study. At high doses, niacin can cause flushing and gastrointestinal symptoms, but it has few side effects at lower doses.

Nicotinamide mononucleotide, nicotinamide riboside, and nicotinamide itself are better tolerated than niacin and are generally considered to be safe as dietary supplements, but the doses of NAD precursors required to reduce the risk of congenital malformations in humans are not known. Also unknown is the extent to which raising dietary levels of NAD would limit cognitive impairment in infants with congenital malformations.
 

Matthew G. Vander Heiden, MD, PhD, is with the Massachusetts Institute of Technology, Cambridge, Mass., and the Dana Farber Cancer Center, Boston. He reported receiving personal fees from Agios Pharmaceuticals and Aeglea Biotherapeutics outside the submitted work. These comments are adapted from an editorial (N Engl J Med. 2007;377:509-11).

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Body

 

Shi et al. report that a deficiency of nicotinamide adenine dinucleotide (NAD) causes congenital malformations, suggesting that interventions to raise NAD levels during fetal and early postnatal development might further reduce the incidence of congenital anomalies.

Regardless of how NAD depletion leads to congenital malformations (whether by compromising the detection of DNA damage by PARP proteins, reducing the supply of nucleotides, or both), dietary supplementation with NAD precursors merits further study. At high doses, niacin can cause flushing and gastrointestinal symptoms, but it has few side effects at lower doses.

Nicotinamide mononucleotide, nicotinamide riboside, and nicotinamide itself are better tolerated than niacin and are generally considered to be safe as dietary supplements, but the doses of NAD precursors required to reduce the risk of congenital malformations in humans are not known. Also unknown is the extent to which raising dietary levels of NAD would limit cognitive impairment in infants with congenital malformations.
 

Matthew G. Vander Heiden, MD, PhD, is with the Massachusetts Institute of Technology, Cambridge, Mass., and the Dana Farber Cancer Center, Boston. He reported receiving personal fees from Agios Pharmaceuticals and Aeglea Biotherapeutics outside the submitted work. These comments are adapted from an editorial (N Engl J Med. 2007;377:509-11).

Body

 

Shi et al. report that a deficiency of nicotinamide adenine dinucleotide (NAD) causes congenital malformations, suggesting that interventions to raise NAD levels during fetal and early postnatal development might further reduce the incidence of congenital anomalies.

Regardless of how NAD depletion leads to congenital malformations (whether by compromising the detection of DNA damage by PARP proteins, reducing the supply of nucleotides, or both), dietary supplementation with NAD precursors merits further study. At high doses, niacin can cause flushing and gastrointestinal symptoms, but it has few side effects at lower doses.

Nicotinamide mononucleotide, nicotinamide riboside, and nicotinamide itself are better tolerated than niacin and are generally considered to be safe as dietary supplements, but the doses of NAD precursors required to reduce the risk of congenital malformations in humans are not known. Also unknown is the extent to which raising dietary levels of NAD would limit cognitive impairment in infants with congenital malformations.
 

Matthew G. Vander Heiden, MD, PhD, is with the Massachusetts Institute of Technology, Cambridge, Mass., and the Dana Farber Cancer Center, Boston. He reported receiving personal fees from Agios Pharmaceuticals and Aeglea Biotherapeutics outside the submitted work. These comments are adapted from an editorial (N Engl J Med. 2007;377:509-11).

Title
Next, study supplementation
Next, study supplementation

 

Mutations that disrupt de novo synthesis of nicotinamide adenine dinucleotide (NAD) were associated with multiple congenital malformations in humans and mice, and supplementing niacin during gestation prevented these malformations in mice, new research suggests.

The malformations include vertebral defects, anal atresia, cardiac defects, tracheoesophageal fistula, renal anomalies, and limb abnormalities (VACTERL), “a nonrandom combination of congenital defects without a known cause,” wrote Hongjun Shi, PhD, of Victor Chang Cardiac Research Institute, New South Wales, Australia, and colleagues (N Engl J Med. 2017;377:544-52).

Numerous genetic and environmental factors can potentially cause NAD deficiency during gestation and the investigators suggested collectively referring to the resulting malformations as “congenital NAD deficiency disorders.”

Congenital defects can occur together in newborns more often than would be expected by chance, but “in many such cases, it has proved difficult to identify a genetic cause,” the investigators noted. Using genomic sequencing, they looked for possible pathogenic gene variants within four unrelated families in which a person was born with multiple congenital malformations. Next, they evaluated the function of the variants by testing in vitro enzyme activity and measuring relevant plasma metabolites. Finally, they used the CRISPR (clustered regularly interspaced short palindromic repeats)–Cas9 system to create mouse models with similar variants.

This approach identified variants in two genes encoding enzymes of the kynurenine pathway: 3-hydroxyanthranilic acid 3,4-dioxygenase (HAAO) and kynureninase (KYNU). Three patients had homozygous variants associated with loss-of-function changes in these proteins. A fourth patient had heterozygous variants in the gene encoding KYNU.

“The mutant enzymes had greatly reduced activity in vitro,” the researchers wrote. Patients had decreased circulating levels of NAD, which tryptophan synthesizes through the kynurenine pathway. Notably, mouse embryos lacking the mouse equivalents of HAAO or KYNU also had congenital defects associated with NAD deficiency. Preventing NAD deficiency during gestation averted these defects in mice.

“The NAD de novo synthesis pathway catabolizes tryptophan,” the researchers added. “Although metabolite levels upstream of the block are elevated, and the metabolites have postnatal functions, we found that it is the deficiency in embryonic NAD, downstream of the block, that is disrupting embryogenesis.”

The study was supported by the Australian and New South Wales governments and foundations. The investigators reported having no other financial disclosures.

 

Mutations that disrupt de novo synthesis of nicotinamide adenine dinucleotide (NAD) were associated with multiple congenital malformations in humans and mice, and supplementing niacin during gestation prevented these malformations in mice, new research suggests.

The malformations include vertebral defects, anal atresia, cardiac defects, tracheoesophageal fistula, renal anomalies, and limb abnormalities (VACTERL), “a nonrandom combination of congenital defects without a known cause,” wrote Hongjun Shi, PhD, of Victor Chang Cardiac Research Institute, New South Wales, Australia, and colleagues (N Engl J Med. 2017;377:544-52).

Numerous genetic and environmental factors can potentially cause NAD deficiency during gestation and the investigators suggested collectively referring to the resulting malformations as “congenital NAD deficiency disorders.”

Congenital defects can occur together in newborns more often than would be expected by chance, but “in many such cases, it has proved difficult to identify a genetic cause,” the investigators noted. Using genomic sequencing, they looked for possible pathogenic gene variants within four unrelated families in which a person was born with multiple congenital malformations. Next, they evaluated the function of the variants by testing in vitro enzyme activity and measuring relevant plasma metabolites. Finally, they used the CRISPR (clustered regularly interspaced short palindromic repeats)–Cas9 system to create mouse models with similar variants.

This approach identified variants in two genes encoding enzymes of the kynurenine pathway: 3-hydroxyanthranilic acid 3,4-dioxygenase (HAAO) and kynureninase (KYNU). Three patients had homozygous variants associated with loss-of-function changes in these proteins. A fourth patient had heterozygous variants in the gene encoding KYNU.

“The mutant enzymes had greatly reduced activity in vitro,” the researchers wrote. Patients had decreased circulating levels of NAD, which tryptophan synthesizes through the kynurenine pathway. Notably, mouse embryos lacking the mouse equivalents of HAAO or KYNU also had congenital defects associated with NAD deficiency. Preventing NAD deficiency during gestation averted these defects in mice.

“The NAD de novo synthesis pathway catabolizes tryptophan,” the researchers added. “Although metabolite levels upstream of the block are elevated, and the metabolites have postnatal functions, we found that it is the deficiency in embryonic NAD, downstream of the block, that is disrupting embryogenesis.”

The study was supported by the Australian and New South Wales governments and foundations. The investigators reported having no other financial disclosures.

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Key clinical point: Mutations disrupting de novo synthesis of NAD were associated with congenital malformations.

Major finding: Major congenital defects affecting unrelated families were associated with variants in genes encoding 3-hydroxyanthranilic acid 3,4-dioxygenase (HAAO) and kynureninase (KYNU).

Data source: Genomic sequencing of four unrelated families in which a person was born with multiple congenital malformations, plus in vitro measurements of enzyme activity and plasma metabolites and studies of mouse models created with the CRISPR–Cas9 system.

Disclosures: The study was supported by the Australian and New South Wales governments and foundations. The investigators reported having no other financial disclosures.

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Cosmetic Corner: Dermatologists Weigh in on Men’s Products

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Cosmetic Corner: Dermatologists Weigh in on Men’s Products

To improve patient care and outcomes, leading dermatologists offered their recommendations on men’s products. Consideration must be given to:

  • bareMinerals SPF 30 Natural Sunscreen
    Bare Escentuals Beauty, Inc
    “I recommend this product to my male patients when they are not wearing a hat. It protects the scalp from UV damage without a heavy greasy finish.”—Shari Lipner, MD, PhD, New York, New York
     
  • Ducray Alopexy 5% For Men
    Pierre Fabre Laboratories
    “This dermatologist-dispensed product for men addresses chronic hair loss as well as thinning hair. It contains an optimal level of minoxidil 5% in an elegant unscented formulation and is designed to spray on smoothly and evenly.”—Jeannette Graf, MD, Great Neck, New York
     
  • Facial Fuel Energizing Scrub
    Kiehl’s
    “This product is great for oily skin and enlarged pores. The particles in the product allow one to get a deep-clean feeling.”—Gary Goldenberg, MD, New York, New York
     
  • Physical Matte UV Defense SPF 50
    SkinCeuticals
    “For men I like to keep things simple. I recommend what I use with the single most important thing being daily sun protection. SkinCeuticals Physical Matte UV Defense SPF 50 is my favorite and I use it after I shave. It goes on smoothly and has a natural tint along with a high SPF.”—Jerome Potozkin, MD, Danville, California
     
  • Ultimate Brushless Shave Cream
    Kiehl’s
    “I recommend this product for men with frequent irritation from shaving. This cream-based product helps to provide a close shave without as much irritation from other gel-based products. A small amount goes a long way!”—Anthony M. Rossi, MD, New York, New York


Cutis invites readers to send us their recommendations. Athlete’s foot treatments and cleansing devices will be featured in upcoming editions of Cosmetic Corner. Please email your recommendation(s) to the Editorial Office.

Disclaimer: Opinions expressed herein do not necessarily reflect those of Cutis or Frontline Medical Communications Inc. and shall not be used for product endorsement purposes. Any reference made to a specific commercial product does not indicate or imply that Cutis or Frontline Medical Communications Inc. endorses, recommends, or favors the product mentioned. No guarantee is given to the effects of recommended products.

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To improve patient care and outcomes, leading dermatologists offered their recommendations on men’s products. Consideration must be given to:

  • bareMinerals SPF 30 Natural Sunscreen
    Bare Escentuals Beauty, Inc
    “I recommend this product to my male patients when they are not wearing a hat. It protects the scalp from UV damage without a heavy greasy finish.”—Shari Lipner, MD, PhD, New York, New York
     
  • Ducray Alopexy 5% For Men
    Pierre Fabre Laboratories
    “This dermatologist-dispensed product for men addresses chronic hair loss as well as thinning hair. It contains an optimal level of minoxidil 5% in an elegant unscented formulation and is designed to spray on smoothly and evenly.”—Jeannette Graf, MD, Great Neck, New York
     
  • Facial Fuel Energizing Scrub
    Kiehl’s
    “This product is great for oily skin and enlarged pores. The particles in the product allow one to get a deep-clean feeling.”—Gary Goldenberg, MD, New York, New York
     
  • Physical Matte UV Defense SPF 50
    SkinCeuticals
    “For men I like to keep things simple. I recommend what I use with the single most important thing being daily sun protection. SkinCeuticals Physical Matte UV Defense SPF 50 is my favorite and I use it after I shave. It goes on smoothly and has a natural tint along with a high SPF.”—Jerome Potozkin, MD, Danville, California
     
  • Ultimate Brushless Shave Cream
    Kiehl’s
    “I recommend this product for men with frequent irritation from shaving. This cream-based product helps to provide a close shave without as much irritation from other gel-based products. A small amount goes a long way!”—Anthony M. Rossi, MD, New York, New York


Cutis invites readers to send us their recommendations. Athlete’s foot treatments and cleansing devices will be featured in upcoming editions of Cosmetic Corner. Please email your recommendation(s) to the Editorial Office.

Disclaimer: Opinions expressed herein do not necessarily reflect those of Cutis or Frontline Medical Communications Inc. and shall not be used for product endorsement purposes. Any reference made to a specific commercial product does not indicate or imply that Cutis or Frontline Medical Communications Inc. endorses, recommends, or favors the product mentioned. No guarantee is given to the effects of recommended products.

To improve patient care and outcomes, leading dermatologists offered their recommendations on men’s products. Consideration must be given to:

  • bareMinerals SPF 30 Natural Sunscreen
    Bare Escentuals Beauty, Inc
    “I recommend this product to my male patients when they are not wearing a hat. It protects the scalp from UV damage without a heavy greasy finish.”—Shari Lipner, MD, PhD, New York, New York
     
  • Ducray Alopexy 5% For Men
    Pierre Fabre Laboratories
    “This dermatologist-dispensed product for men addresses chronic hair loss as well as thinning hair. It contains an optimal level of minoxidil 5% in an elegant unscented formulation and is designed to spray on smoothly and evenly.”—Jeannette Graf, MD, Great Neck, New York
     
  • Facial Fuel Energizing Scrub
    Kiehl’s
    “This product is great for oily skin and enlarged pores. The particles in the product allow one to get a deep-clean feeling.”—Gary Goldenberg, MD, New York, New York
     
  • Physical Matte UV Defense SPF 50
    SkinCeuticals
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Childhood poverty sets stage for adult heart disease

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Children from the poorest families show signs of thicker carotid artery walls that may raise their risk for heart attack and stroke as adults, according to data from a longitudinal study of more than 1,000 families in Australia.

“Understanding when associations between SEP [socioeconomic position] and CVD [cardiovascular disease] first appear may help address the increasing social gradients in CVD outcomes and risk factors,” wrote Richard S. Liu, MD, of the Murdoch Children’s Research Institute, Parkville, Australia, and colleagues.

The researchers reviewed data from 1,477 families in Australia. Socioeconomic position of the children’s families was measured biennially at age 0-1 year and onward, and the researchers used imaging to measure the right carotid arteries of children between age 11 and 12 years. Overall, children in the lowest socioeconomic quartile at age 11-12 years were 46% more likely than those in the highest quartile to have thicker carotid arteries (defined as greater than the 75th percentile).

“In univariable analyses, each quartile increment higher of family SEP was associated with a 3.7-micrometer thicker carotid intima-media thickness [IMT],” and the association remained significant in a multivariate analysis controlling for cardiovascular risk factors including secondhand smoke, body weight, and blood pressure, the researchers wrote.

The socioeconomic status of the family had a greater impact than that of the neighborhood, they noted.

In addition, low socioeconomic status of a child’s family at age 2-3 years was associated with thickness in carotid artery measurements at age 11-12 years.

The study findings were limited by several factors, including a lack of data on the clinical consequences of increased carotid thickness in children, as well as the need for investigation of other signs of subclinical atherosclerosis, the researchers said. However, “consistent evidence showed an association between SEP from early life and midchildhood carotid IMT,” and additional research is needed to explore the impact of household factors on childhood health, they emphasized.

The findings were published online Aug. 9 in the Journal of the American Heart Association (J Am Heart Assoc. 2017;6:e0059255).

The study was funded by the National Health and Medical Research Council of Australia and several research institutions. The researchers had no financial conflicts to disclose.

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Children from the poorest families show signs of thicker carotid artery walls that may raise their risk for heart attack and stroke as adults, according to data from a longitudinal study of more than 1,000 families in Australia.

“Understanding when associations between SEP [socioeconomic position] and CVD [cardiovascular disease] first appear may help address the increasing social gradients in CVD outcomes and risk factors,” wrote Richard S. Liu, MD, of the Murdoch Children’s Research Institute, Parkville, Australia, and colleagues.

The researchers reviewed data from 1,477 families in Australia. Socioeconomic position of the children’s families was measured biennially at age 0-1 year and onward, and the researchers used imaging to measure the right carotid arteries of children between age 11 and 12 years. Overall, children in the lowest socioeconomic quartile at age 11-12 years were 46% more likely than those in the highest quartile to have thicker carotid arteries (defined as greater than the 75th percentile).

“In univariable analyses, each quartile increment higher of family SEP was associated with a 3.7-micrometer thicker carotid intima-media thickness [IMT],” and the association remained significant in a multivariate analysis controlling for cardiovascular risk factors including secondhand smoke, body weight, and blood pressure, the researchers wrote.

The socioeconomic status of the family had a greater impact than that of the neighborhood, they noted.

In addition, low socioeconomic status of a child’s family at age 2-3 years was associated with thickness in carotid artery measurements at age 11-12 years.

The study findings were limited by several factors, including a lack of data on the clinical consequences of increased carotid thickness in children, as well as the need for investigation of other signs of subclinical atherosclerosis, the researchers said. However, “consistent evidence showed an association between SEP from early life and midchildhood carotid IMT,” and additional research is needed to explore the impact of household factors on childhood health, they emphasized.

The findings were published online Aug. 9 in the Journal of the American Heart Association (J Am Heart Assoc. 2017;6:e0059255).

The study was funded by the National Health and Medical Research Council of Australia and several research institutions. The researchers had no financial conflicts to disclose.

 

Children from the poorest families show signs of thicker carotid artery walls that may raise their risk for heart attack and stroke as adults, according to data from a longitudinal study of more than 1,000 families in Australia.

“Understanding when associations between SEP [socioeconomic position] and CVD [cardiovascular disease] first appear may help address the increasing social gradients in CVD outcomes and risk factors,” wrote Richard S. Liu, MD, of the Murdoch Children’s Research Institute, Parkville, Australia, and colleagues.

The researchers reviewed data from 1,477 families in Australia. Socioeconomic position of the children’s families was measured biennially at age 0-1 year and onward, and the researchers used imaging to measure the right carotid arteries of children between age 11 and 12 years. Overall, children in the lowest socioeconomic quartile at age 11-12 years were 46% more likely than those in the highest quartile to have thicker carotid arteries (defined as greater than the 75th percentile).

“In univariable analyses, each quartile increment higher of family SEP was associated with a 3.7-micrometer thicker carotid intima-media thickness [IMT],” and the association remained significant in a multivariate analysis controlling for cardiovascular risk factors including secondhand smoke, body weight, and blood pressure, the researchers wrote.

The socioeconomic status of the family had a greater impact than that of the neighborhood, they noted.

In addition, low socioeconomic status of a child’s family at age 2-3 years was associated with thickness in carotid artery measurements at age 11-12 years.

The study findings were limited by several factors, including a lack of data on the clinical consequences of increased carotid thickness in children, as well as the need for investigation of other signs of subclinical atherosclerosis, the researchers said. However, “consistent evidence showed an association between SEP from early life and midchildhood carotid IMT,” and additional research is needed to explore the impact of household factors on childhood health, they emphasized.

The findings were published online Aug. 9 in the Journal of the American Heart Association (J Am Heart Assoc. 2017;6:e0059255).

The study was funded by the National Health and Medical Research Council of Australia and several research institutions. The researchers had no financial conflicts to disclose.

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FROM THE JOURNAL OF THE AMERICAN HEART ASSOCIATION

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Key clinical point: Low socioeconomic status of families was significantly linked with thicker carotid arteries in children at age 11-12 years, which could increase the risk of stroke in adulthood.

Major finding: Children in the lowest socioeconomic group at age 11-12 years were 46% more likely to have carotid intima-media thickness at a level above the 75th percentile.

Data source: A longitudinal study of children from 1,477 families in Australia.

Disclosures: The study was funded by the National Health and Medical Research Council of Australia and several research institutions. The researchers had no financial conflicts to disclose.

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