Different depressing effects of lentinan on the increases of cytochrome P-450-dependent monooxygenase activities induced in mice by phenobarbital and by 3-methylcholanthrene.
- 1 January 1986
- journal article
- research article
- Published by Pharmaceutical Society of Japan in CHEMICAL & PHARMACEUTICAL BULLETIN
- Vol. 34 (3), 1309-1314
- https://doi.org/10.1248/cpb.34.1309
Abstract
The effect of lentinan (1 mg/kg/12 h, 4, i.p.) on the hepatic cytochrome P-450 molecular species and the cytochrome P-450-dependent monooxygenase activities was observed in ddY and C57BL/6 mice treated with phenobarbital (8 or 40 mg/kg/d .times. 2, i.p.) or 3-methylcholanthrene (80 mg/kg, i.p.). The activities of aminopyrine N-demethylase, aniline hydroxylase and biphenyl 4-hydroxylase were elevated by 20-37% by the treatment with phenobarbital, and these increases were unaffected by concurrent administration of phenobarbital and lentinan. The activities of 7-ethoxycoumarin O-deethylase and biphenyl 2-hydroxylase were increased by 74-192% by the treatment with 3-methylcholanthrene, but these increases were depressed by the combination treatment with 3-methylcholanthrene and lentinan. It was found by a sodium dodecyl sulfate-polyacrylamide gel electrophoretic study that the suppression by lentinan of the elevation of cytochrome P-450-dependent monooxygenase activities induced by 3-methylcholanthrene was caused by a decrease in the hepatic microsomal cytochrome P-450 content.This publication has 10 references indexed in Scilit:
- Depression of Hepatic Microsomal Enzyme Systems by Lentinan in MiceThe Japanese Journal of Pharmacology, 1985
- Structural gene products of the Ah locus. Genetic and immunochemical evidence for two forms of mouse liver cytochrome P-450 induced by 3-methylcholanthrene.Journal of Biological Chemistry, 1979
- Separation and characterization of highly purified forms of liver microsomal cytochrome P-450 from rats treated with polychlorinated biphenyls, phenobarbital, and 3-methylcholanthrene.Journal of Biological Chemistry, 1979
- Properties of electrophoretically homogeneous phenobarbital-inducible and beta-naphthoflavone-inducible forms of liver microsomal cytochrome P-450Journal of Biological Chemistry, 1976
- Depression of hepatic cytochrome P-450-dependent monooxygenase systems with administered interferon inducing agentsBiochemical and Biophysical Research Communications, 1976
- Evidence for Biochemically Different Types of Vesicles in the Hepatic Microsomal Fraction*The Journal of Biochemistry, 1966
- A fluorimetric study of the hydroxylation of biphenyl in vitro by liver preparations of various speciesBiochemical Journal, 1965
- THE EFFECT OF BETA-DIETHYLAMINOETHYLDIPHENYLPROPYLACETATE HYDROCHLORIDE ON THE ACTION OF A SERIES OF BARBITURATES AND CNS DEPRESSANTS1954
- The colorimetric estimation of formaldehyde by means of the Hantzsch reactionBiochemical Journal, 1953
- PROTEIN MEASUREMENT WITH THE FOLIN PHENOL REAGENTJournal of Biological Chemistry, 1951