PubMed:10699494 / 465-468 4 Projects
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Tissue-specific expression of c-series gangliosides in the extraneural system.
c-Series gangliosides in extraneural tissues from young and adult rats were examined using thin-layer chromatographic (TLC) immunostaining with a specific monoclonal antibody A2B5. The composition of c-series gangliosides significantly differed among tissues. In adult rats, while liver tissue contained GT1c, GQ1c, and GP1c, renal tissue had GT3 as the major c-series ganglioside with GT2 in a lesser amount. Pancreatic tissue expressed c-series gangliosides that consisted of GT3, GT2, GQ1c, and GP1c. In other tissues including adrenal, thyroid, and eye lens, GT3 constituted the main c-series ganglioside species. While total ganglioside contents of extraneural tissues were much lower than that of brain tissue, the proportions of c-series gangliosides to total gangliosides were higher in many extraneural tissues. Interestingly, eye lens had the highest GT3 content among rat tissues examined. The compositions and concentrations of c-series gangliosides in liver and kidney significantly differed between 5-day-old and 7-week-old rats, suggesting the development-dependent expression of c-series gangliosides in these tissues. These results suggest that the expression of c-series gangliosides in extraneural tissues is regulated in a tissue-specific manner.
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