Title : Growth hormone-dependent and -independent regulation of cytochrome P-450 isozyme expression in streptozotocin-diabetic rats.

Pub. Date : 1991 Apr

PMID : 1706265






5 Functional Relationships(s)
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1 In male rats, hepatic P-450h apoprotein and mRNA decreased to 13% and 24% of control male levels, respectively, within 14 days of STZ injection. Streptozocin cytochrome P450, subfamily 2, polypeptide 11 Rattus norvegicus
2 STZ treatment also suppressed P-450h expression in GH-treated hypophysectomized (Hx) male rats, but incompletely. Streptozocin cytochrome P450, subfamily 2, polypeptide 11 Rattus norvegicus
3 However, in Hx male rats without GH supplementation, STZ treatment suppressed P-450h apoprotein and mRNA expression to 16% and 6% of nondiabetic Hx male levels, respectively, demonstrating the existence of GH-independent regulation of P-450h expression. Streptozocin cytochrome P450, subfamily 2, polypeptide 11 Rattus norvegicus
4 However, in Hx male rats without GH supplementation, STZ treatment suppressed P-450h apoprotein and mRNA expression to 16% and 6% of nondiabetic Hx male levels, respectively, demonstrating the existence of GH-independent regulation of P-450h expression. Streptozocin cytochrome P450, subfamily 2, polypeptide 11 Rattus norvegicus
5 The results provide evidence for the existence of STZ-sensitive GH-independent expression of P-450h and further document the gender differences in STZ sensitivity. Streptozocin cytochrome P450, subfamily 2, polypeptide 11 Rattus norvegicus