Isozyme pattern of leukocyte α-d-mannosidase in patients with mannosidosis

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Lysosomal alpha-mannosidase and alpha-mannosidosis.

Lysosomal alpha-mannosidase with acidic pH optimum is ubiquitous in human tissues where is expressed in two major forms, A and B that are the product of a single gene located on chromosome 19. Mutations in the gene encoding for alpha-mannosidase cause alpha- mannosidosis, an autosomal recessive disease, resulting in the accumulation of unprocessed mannose containing oligosaccharide material. Th...

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Human lysosomal α-D-mannosidase regulation in promyelocytic leukaemia cells.

Lysosomal α-D-mannosidase is an exoglycosidase involved in the ordered degradation of N-linked oligosaccharides. It is ubiquitously expressed, although the main transcript is more abundant in peripheral blood leucocytes. Here we report that α-D-mannosidase enzyme activity is very high in the promyelocytic leukaemia cell lines HL60 and NB4, as compared with other leukaemic cell lines or cells fr...

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Retinal dystrophy in 2 brothers with α-Mannosidosis.

OU, a failed corneal graft with corneal thinning and an epithelial defect in the right eye, and severe corneal thinning with a corneal perforation in the left eye. The corneal perforation in the left eye was managed with cyanoacrylate glue and a bandage contact lens. The patient was malnourished because of her social situation and psychiatric deterioration, with a vitamin A level of 5 μg/dL. Af...

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ژورنال

عنوان ژورنال: Japanese journal of human genetics

سال: 1988

ISSN: 0021-5074

DOI: 10.1007/bf01891236