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Investigation of dysmyelinogenesis in caprine β‐mannosidosis: In vitro characterization of oligodendrocytes
Author(s) -
Boyer Philip J.,
Lovell Kathryn L.
Publication year - 1990
Publication title -
glia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.954
H-Index - 164
eISSN - 1098-1136
pISSN - 0894-1491
DOI - 10.1002/glia.440030309
Subject(s) - biology , galactocerebroside , oligodendrocyte , myelin , white matter , central nervous system , neuroscience , medicine , radiology , magnetic resonance imaging
Central nervous system myelin deficiency is a consistent feature of caprine β‐mannosidosis, and autosomal recessive neurovisceral lysosomal storage disease. To investigate the possibility of an intrinsic oligodendrocyte defect in β‐mannosidosis, oligodendrocyte‐enriched glial cultures from the cerebral hemisphere white matter of two affected and six control goats were compared with respect to culture yield and morphology. Fewer oligodendrocytes were cultured per gram of white matter from affected animals than from control animals. Galactocerebroside‐positive oligodendrocytes from all animals were similar morphologically at all stages of culture by phase contrast and fluorescence microscopy. These findings are consistent with in vivo morphological observations and suggest that differentiated oligodendrocytes from affected animals do not show morphological abnormalities in culture. However, increased numbers of galactocerebroside‐negative bipolar cells, which may be glial progenitor cells, were present in cultures from affected animals. This observation suggests the possibility of a defect in differentiation to mature oligodendrocytes, with persistence of the undifferentiated glia during late stages of development.

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