Induction of cytochrome P450-dependent mixed function oxidase activities and peroxisome proliferation by Chloramine-T (cas 127-65-1) in male rat liver

Add time:09/09/2019    Source:sciencedirect.com

Chloramine-T (cas 127-65-1) is an antimicrobial agent recognized for its disinfectant properties widely used in food industry. As an N-chloro-compound, chloramine-T contains electrophilic chlorine and in water it hydrolyses to hypochlorite. Chlorine as hypochlorous acid or hypochlorite is a very reactive chemical which can function as both an oxidant and halogenating agent. Because chloramine-T could be involved in the metabolic activation of drugs, in the present study the effects of chloramine-T on the activities of some drug metabolizing enzymes in rat liver microsomes and peroxisome proliferation were determined in vivo. Rats were treated orally with chloramine-T at doses of 1.25, 2.50, 5 and 10 mg/kg body weight (bw)/day for 6 days. The activities of CYP2E1, CYP1A1/2 CYP2B1/2, CYP3A4 and CYP4A1/2 enzymes significantly increased after treatment with 2.50, 5 and 10 mg/kg bw/day, in a dose-dependent manner as compared to control. This effect was not observed after chloramine-T treatment at dose of 1.25 mg/kg bw/day. Our results suggest that chloramine-T may potentiate the toxicity of many xenobiotics via metabolic activation and/or accumulation of reactive metabolites.

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