Title : Possibility of the involvement of 9H-pyrido[3,4-b]indole (norharman) in carcinogenesis via inhibition of cytochrome P450-related activities and intercalation to DNA.

Pub. Date : 2003 Nov 10

PMID : 14568301






8 Functional Relationships(s)
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1 Possibility of the involvement of 9H-pyrido[3,4-b]indole (norharman) in carcinogenesis via inhibition of cytochrome P450-related activities and intercalation to DNA. norharman cytochrome P450, family 2, subfamily g, polypeptide 1 Rattus norvegicus
2 This study investigated the inhibitory effect of 9H-pyrido[3,4-b]indole (norharman), one of the naturally occurring beta-carbolines, on cytochrome P450 (CYP)-related activities and the relationship between its inhibitory effect, its intercalation to DNA, and its comutagenic effect. norharman cytochrome P450, family 2, subfamily g, polypeptide 1 Rattus norvegicus
3 This study investigated the inhibitory effect of 9H-pyrido[3,4-b]indole (norharman), one of the naturally occurring beta-carbolines, on cytochrome P450 (CYP)-related activities and the relationship between its inhibitory effect, its intercalation to DNA, and its comutagenic effect. norharman cytochrome P450, family 2, subfamily g, polypeptide 1 Rattus norvegicus
4 Norharman inhibited microsomal CYP-related enzyme activities and CO-binding to the CYP heme (50% inhibitory concentration (IC50), 0.07-6.4 microg/ml). norharman cytochrome P450, family 2, subfamily g, polypeptide 1 Rattus norvegicus
5 Norharman inhibited microsomal CYP-related enzyme activities and CO-binding to the CYP heme (50% inhibitory concentration (IC50), 0.07-6.4 microg/ml). norharman cytochrome P450, family 2, subfamily g, polypeptide 1 Rattus norvegicus
6 These data clarified that norharman acts as an inhibitor of the CYP-mediated biotransformation of Glu-P-1 via inhibition of O2-binding to CYP heme, and its inhibition of CYP enzymes occurs at much lower concentration than that for its intercalation to DNA. norharman cytochrome P450, family 2, subfamily g, polypeptide 1 Rattus norvegicus
7 These data clarified that norharman acts as an inhibitor of the CYP-mediated biotransformation of Glu-P-1 via inhibition of O2-binding to CYP heme, and its inhibition of CYP enzymes occurs at much lower concentration than that for its intercalation to DNA. norharman cytochrome P450, family 2, subfamily g, polypeptide 1 Rattus norvegicus
8 These data clarified that norharman acts as an inhibitor of the CYP-mediated biotransformation of Glu-P-1 via inhibition of O2-binding to CYP heme, and its inhibition of CYP enzymes occurs at much lower concentration than that for its intercalation to DNA. norharman cytochrome P450, family 2, subfamily g, polypeptide 1 Rattus norvegicus