Hormonal regulation of the zonated expression of cytochrome P-450 3A in rat liver.

Abstract

Most cytochrome P-450 enzymes are expressed characteristically in a zonated pattern in the liver. The factors responsible for this heterogenous expression are largely unknown. Here we report how growth hormone and tri-iodothyronine regulate the steroid-hydroxylating cytochrome P-450 (CYP) 3A forms, which are constitutively expressed mainly in the perivenous… (More)

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