Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: EC:3.1.1.53 (sialidase)
 2,694 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A defect of lysosomal neuraminidase (sialidase N-acetyl-neuramine acid hydrolase EC 3.2.1.18) leads to a wide spectrum of phenotypes, the most severe of which is nephrosialidosis. A 4-year-old boy of related parents, born at term with hydrops fetalis, is reported. Hydrocephalus was detected at 2 months of age. The child's course over 3 years was characterized by slow growth and psychomotor development. He had mild hepatosplenomegaly, joint restriction, gingival hypertrophy, lens opacities and cherry-red spot. Coarse facial features and depressed nasal bridge were discreet. At the age of 3.5 years, he developed gradual progressive edema, decreased activity and increased fatigue. A diagnosis of nephrotic syndrome was made because of massive proteinuria. Thin-layer chromatography of urinary oligosaccharides revealed the presence of several abnormal sialyloligosaccharides. The diagnosis was confirmed by measurement of neuraminidase activity in cultured skin fibroblasts.
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PMID:Neuraminidase deficiency presenting as a nephrosialidosis: the first case detected in Poland. 894 16