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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Co-localization of hyaluronic acid and chondroitin sulfate proteoglycan in rat cerebral cortex.

The distribution of hyaluronate (HA) and chondroitin sulfate (CS) proteoglycan in the rat cerebral cortex was compared. For the localization of HA, the sections were incubated with human glial hyaluronate-binding protein ( GHAP) and then reacted with monoclonal or polyclonal antibodies to GHAP. Polyclonal antibodies raised in rabbit were used for double-labeling experiments with monoclonal antibodies raised in mice and reacting with CS proteoglycans. Little reactivity was observed in rat cerebral cortex with polyclonal GHAP antibodies if the sections were not incubated with GHAP. Monoclonal antibodies to GHAP did not react with murine tissues. CS proteoglycans were localized in chondroitinase-digested sections with monoclonal antibodies reacting with the 4-sulfated oligosaccharide stubs formed by the digestion with chondroitinase ABC of CS side chains. In the rat cerebral cortex, the distribution of CS proteoglycans was similar to that reported by Bertolotto, A., Rocca, G. and Schiffer, D., J. Neurol. Sci., 100 (1990) 113-123, and his collaborators using the same antibodies. Many neurons mainly located in the upper and deep cortical layers were surrounded by CS immunoreactive material. Several (but not all) CS-positive neurons also stained for HA with an identical distribution except that in most instances the staining was confined to the periphery of the perikaryon and did not extend to the dendritic tree. The finding suggests that cerebral cortex CS proteoglycan is capable of interacting with HA.[1]


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