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Pre-translational induction of pentoxyresorufin O-depentylase by pyridine.

Abstract：

:Pentoxyresorufin O-depentylase activity, mainly associated with phenobarbital-inducible cytochrome P450IIB1 (designated CYP2B1), was increased after a single treatment of pyridine (250 mg/kg, i.p.), and further increased by repeated treatments for 5 days. The catalytic activity and immunoreactive protein of CYP2B recognized by polyclonal antibodies were significantly induced by a relatively high dose of pyridine (250 mg/kg, i.p.) while ethanol-inducible cytochrome P450IIE1 (CYP2E1) could be induced by a low dosage (25 mg/kg, i.p.). Unlike CYP2E1 induction without changing its mRNA level, the induction of CYP2B by pyridine was accompanied by an elevation of its mRNA, indicating a pre-translational activation of this enzyme. These results indicate that pyridine induces various isozymes of cytochromes P450 by different induction mechanisms.

journal_name

Biochem Biophys Res Commun

journal_title

Biochemical and biophysical research communications

authors

Park KS,Sohn DH,Veech RL,Song BJ

doi

10.1016/0006-291x(92)91678-j

subject

Has Abstract

pub_date

1992-06-15 00:00:00

pages

676-82

issue

2

eissn

0006-291X

issn

1090-2104

pii

0006-291X(92)91678-J

journal_volume

185

pub_type

杂志文章

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