Changes in the quantity and activity of cytochrome P-450 isozymes in primary cultured rat hepatocytes
1989
Hepatocytes from male Spragne-Dawley rats pretreated with a cytochrome P-450 inducer, 3-methoxy-4-aminoazobenzene (3-MeO-AAB), 3-methylcholanthrene (MC) or phenobarbital (PB), were cultured in vitro, and changes in the quantity and activity of microsomal cytochrome P-450 isozymes in the cells were determined by means of immunochemical methods and a bacterial mutation test, respectively. The results of enzyme-linked immunosorbent assay using monoclonal antibodies against rat P-450 isozymes - test using Salmonella typhimurium TA 98 and carcinogenic aromatic amines. These results indicate that microsomal cytochrome P-450c in primary cultured rat hepatocytes is more stable in culture, in terms of both quantity and activity, than cytochrome P-450d and P-450b/e.
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