Mannosidosis: deficiency of a specific alpha-mannosidase component in cultured fibroblasts. 1975

H A Taylor, and G H Thomas, and A Aylsworth, and R E Stevenson, and L W Reynolds

Evidence is prisented which shows that the enzymatic defect in mannosidosis, the deficiency of alpha-mannosidase, is expressed in cultured skin fibroblasts from patients with mannosidosis. Additionally, by Cellogel electrophoresis, the enzyme can be separated into two major components (a heat stable component missing in mannosidosis fibroblasts with a pH optimum of 3.6-4.0 and a heat labile component present in mannosidosis fibroblasts with a pH optimum of 5.6-6.0). The specific activity and electrophoresis of alpha-mannosidase from cultured amniotic fluid cells are also shown to be similar to cultured skin fibroblasts.

UI MeSH Term Description Entries
D008361 Mannosidases Glycoside hydrolases that catalyze the hydrolysis of alpha or beta linked MANNOSE. Mannosidase
D009083 Mucopolysaccharidoses Group of lysosomal storage diseases each caused by an inherited deficiency of an enzyme involved in the degradation of glycosaminoglycans (mucopolysaccharides). The diseases are progressive and often display a wide spectrum of clinical severity within one enzyme deficiency. Mucopolysaccharidosis
D011247 Pregnancy The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH. Gestation,Pregnancies
D002478 Cells, Cultured Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others. Cultured Cells,Cell, Cultured,Cultured Cell
D004186 Disaccharidases Enzymes belonging to the class of GLYCOSIDE HYDROLASES which break down DISACCHARIDES into simpler sugars, MONOSACCHARIDES. Disaccharidase
D004586 Electrophoresis An electrochemical process in which macromolecules or colloidal particles with a net electric charge migrate in a solution under the influence of an electric current. Electrophoreses
D005260 Female Females
D005347 Fibroblasts Connective tissue cells which secrete an extracellular matrix rich in collagen and other macromolecules. Fibroblast
D006358 Hot Temperature Presence of warmth or heat or a temperature notably higher than an accustomed norm. Heat,Hot Temperatures,Temperature, Hot,Temperatures, Hot
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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