title: [Prenatal diagnosis of Sandhoff's disease (GM2-gangliosidosis, type 2)].
abstract: The diagnosis of GM2-gangliosidosis type 2 (Sandhoff's disease) was made prenatally (23rd week of pregnancy) by amniocentsis. A sibling with "Tay-Sachs disease" had died shortly before. Severe deficiency of total beta-hexosaminidase was found in amniotic fluid and amnion-cell culture. After interruption of the pregnancy the enzyme defect was also found in the fetal brain tissue and the concentration of ganglioside GM2 was three times normal, confirming the diagnosis.
mesh_terms: D000649:Amniocentesis; D000653:Amniotic Fluid / Q000201:enzymology; D001921:Brain / Q000201:enzymology; D002855:Chromatography, Thin Layer; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis / Q000378:metabolism; D005732:Gangliosides / Q000378:metabolism*; D006596:Hexosaminidases / Q000378:metabolism; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007525:Isoelectric Focusing; D008064:Lipidoses / Q000473:pathology; D008661:Metabolism, Inborn Errors / Q000175:diagnosis*; D011247:Pregnancy
chemical_list: D005732:Gangliosides; D006596:Hexosaminidases
vernacular_title: Pränatale Diagnose der GM2-Gangliosidose Typ 2 ("Sandhoff-Jatzkewitz-Krankheit")