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Biomedical subjects

Michel P Mallaret

Publications and source records attributed to Michel P Mallaret.

2 recordsLinked to original sources

Carbimazole-related gastroschisis.

OBJECTIVE: To report a case of gastroschisis in a newborn secondary to carbimazole exposure in utero. CASE SUMMARY: A 25-year-old white woman was treated for Graves disease with carbimazole throughout pregnancy. A boy was born prematurely by vaginal delivery, with a gastroschisis without associated malformative syndrome. Death occurred in the 25th hour of life after surgical repair. DISCUSSION: Carbimazole is completely metabolized to methimazole after absorption. Carbimazole or methimazole intake during pregnancy has been associated with an increased incidence of scalp aplasia. Abdominal wall defects secondary to carbimazole or methimazole exposure in utero seem to be a rare occurrence. However, other cases of abdominal wall defects have been reported in 4 newborns, 2 of them associated with scalp aplasia. An objective causality assessment revealed that the relationship between the gastroschisis and the exposure to carbimazole in utero was possible. CONCLUSIONS: It is important to emphasize the possible risk of abdominal wall defects in newborns to pregnant women taking carbimazole or methimazole.

Adult↗

Nefopam abuse.

OBJECTIVE: To report 3 patients who abused nefopam, a central analgesic that inhibits serotonin, norepinephrine, and dopamine reuptake. CASE SUMMARIES: CASE 1: A 42-year-old white woman with migraines started nefopam therapy about 10 years ago. She now obtains nefopam by prescription forgery and self-administers intramuscular nefopam 300 mg/d. She experiences anticholinergic effects of nefopam and, when attempting withdrawal, depressive symptoms. CASE 2: A 40-year-old white woman with osteoporosis has injected 120 mg of nefopam intramuscularly daily for several years. When she tried to increase doses due to worsening of her symptoms, she experienced tremor, involuntary movements, and dry mouth, and became aggressive. She then resumed the initial doses. She now reports symptoms of depression when attempting withdrawal. CASE 3: A 33-year-old white man, with a history of alcohol and benzodiazepine dependence and ileostomy, and an implanted drug delivery system, has been prescribed nefopam. Fifteen days after therapy was initiated, his daily consumption was 840 mg/d, and further increased to 1840 mg/d. He experienced violent behavior, agitation, facial dysesthesia and myoclonus, tremor of fingers, and sweating. He did not attempt withdrawal. DISCUSSION: The patients described above are drug-dependent according to the Diagnostic and Statistical Manual, 4th Edition. All patients developed a pharmacodynamic tolerance phenomenon, which can develop rapidly. Violent behavior, tremor after massive intake, and depressive symptoms during withdrawal are similar to those reported with psychostimulant abuse. CONCLUSIONS: When abused, nefopam has primarily psychostimulant-like effects, which are probably linked to its dopamine reuptake inhibition properties.

Adult↗