François Petit

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BACKGROUND Congenital disorders of glycosylation are genetic syndromes that result in impaired glycoprotein production. We evaluated patients who had a novel recessive disorder of glycosylation, with a range of clinical manifestations that included hepatopathy, bifid uvula, malignant hyperthermia, hypogonadotropic hypogonadism, growth retardation,(More)
Chromosome abnormalities in embryos are a major cause of implantation and development failures. Some couples with normal karyotypes have repeated implantation failures after intracytoplasmic sperm injection (ICSI). In order to value patients at risk for genetic ICSI failures and the validity of sperm aneuploidy analysis, we have studied cytogenetic(More)
Glucose-6-phosphatase deficiency (G6P deficiency), or glycogen storage disease type I (GSDI), is a group of inherited metabolic diseases, including types Ia and Ib, characterized by poor tolerance to fasting, growth retardation and hepatomegaly resulting from accumulation of glycogen and fat in the liver. Prevalence is unknown and annual incidence is around(More)
There is increasing evidence that normal male reproductive function can be disrupted by exposure to pollutants in the environment that can exogenously mimic, antagonize or block sex-hormone function. One possible consequence of exposure to these xenobiotics is disruption to spermatogenesis, but results thus far provide only indirect and inconsistent(More)
n engl j med 361;4 nejm.org july 23, 2009 425 pretation is not accurate, since this number needed to treat does not represent patients, but rather patient-years. Indeed, 94 patients treated for 2 years is not necessarily the same as 188 patient-years: the former implies 94 distinct patients treated for 2 years, whereas the latter can equally imply 188(More)
procedure, raising the suspicion that the peak could be a result of interference from the iodinated contrast agent. To confirm that the interference on the Capillarys was a result of iomeprol, we enriched a control serum to give a final concentration of 28.6 g/L. On the basis of the known kinetics of the compound, this concentration was anticipated to occur(More)
Neutral lipid storage disease (NLSD) due to PNPLA2 mutation is a rare disorder with a severe muscular and cardiac outcome. All but one reported cases have been diagnosed during adulthood. It is thus ordinarily distinguished from Chanarin-Dorfman syndrome, a paediatric NLSD with a more widespread symptomatology. We report the case of a young child(More)
Tuberous sclerosis complex is a genetic multisystem disease characterized by hamartic development of many organs, most notably the brain, heart, kidneys, lungs, and skin. This autosomic dominant disorder results from mutations in one of two genes, TSC1 and TSC2, coding for hamartin and tuberin, respectively. The hamartin-tuberin complex inhibits the(More)