ISSN:
1432-119X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Medicine
Notes:
Summary The relationship between the formation of microbodies and catalase synthesis in the hepatic cells of male rats was examined with conventional electron microscopy and with the peroxidase staining technic for demonstrating catalase. Daily intraperitoneal injections of ethyl-α-p-chlorophenoxyisobutyrate (CPIB) for 5 days caused a profound increase in microbody numbers without markedly affecting the appearance of the matrix material and all microbodies retained peroxidase activity. A single injection 5 days before sacrifice of 3-amino-1,2,4-triazole (AT), an inhibitor of catalase activity but not catalase synthesis, did not affect their numbers, appearance of matrix material or peroxidase staining. Twice daily injection for 5 days of allylisopropylacetamide (AIA), an inhibitor of catalase synthesis, also did not affect microbody numbers but lowered the electron-density of the microbody matrix and abolished peroxidase staining. After combined administration of these drugs, the number of hepatic microbodies increased but they did not contain peroxidase activity. The results suggest strongly that microbody proliferation is dependent not on catalase synthesis but on synthesis of non-enzymatic protein.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00306104
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