Negative regulation of central nervous system myelination by polysialylated-neural cell adhesion molecule

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Negative regulation of central nervous system myelination by polysialylated-neural cell adhesion molecule.

Many factors have been shown to promote myelination, but few have been shown to be inhibitory. Here, we show that polysialylated-neural cell adhesion molecule (PSA-NCAM) can negatively regulate myelin formation. During development, PSA-NCAM is first expressed on all growing fibers; then, axonal expression is down-regulated and myelin deposition occurs only on PSA-NCAM-negative axons. Similarly,...

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Morphometrical Study of Polysialylated Neural Cell Adhesion Molecule Positive Cells in Rat Pups Hippocampus Following Induction of Seizure during Pregnancy

Background:The polysialylated neural cell adhesion molecule (PSA-NCAM) is expressed in developing brain. Fetal brain damage is caused by different conditions such as seizure and hypoxia. The present study was designed to investigate the effect of maternal seizures on the number of PSA-NCAM positive cells in pup's hippocampus. Methods: Female Wistar rats were divided into four groups: (a) kindle...

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ژورنال

عنوان ژورنال: Proceedings of the National Academy of Sciences

سال: 2000

ISSN: 0027-8424,1091-6490

DOI: 10.1073/pnas.100076197