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Localization of renal and intestinal trehalase with immunofluorescence- and enzyme-labeled antibody techniques

M Nakano

The localization of trehalase with fluorescein isothiocyanate- conjugated and peroxidase-conjugated antibody techniques was examined. Antiserum against purified rabbit renal trehalase was produced against guinea pigs. Anti-renal trehalase immunoglobulin (Ig)G was isolated from the serum and used for the immunohistochemical localization of intestinal and renal trehalases. Specific fluorescence and peroxidase staining were observed in the brush borders of proximal tubules and of intestinal epithelial cells. These results are in good agreement with the biochemical results. Thus, it is concluded that trehalase is specifically localized in the renal and intestinal brush borders. Sections of rabbit intestine and of rabbit kidney treated with anti- rabbit renal trehalase IgG were observed to have a specific fluorescence at the brush borders. Sections of rat intestine treated with the same antibody, however, showed no specific fluorescence at the brush borders. From these results, it is strongly suggested that renal trehalase and intestinal trehalase from the rabbit have common antigenic determinants and that these differ from those in rat intestinal trehalase.

Volume 30, Issue 12, pp. 1243-1248, 12/01/1982
Copyright © 1982 by The Histochemical Society


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