Effect of T-2 mycotoxin on rat liver mitochondria electron transport system.
The in vitro and in vivo effects of T-2 mycotoxin on electron transport in rat liver mitochondria were investigated. T-2 toxin (2.2 mM) inhibited oxygen consumption by 40% in ADP-coupled and DNP-uncoupled mitochondria using either succinate or pyridine-nucleotide linked substrates. Studies employing known inhibitors of specific sites along the electron transport chain identified site I as the principal site of action of T-2 toxin. In vivo experiments using an LD50 dose of T-2 toxin showed early (10 hr) decreases in succinate and pyruvate plus malate oxidation in liver mitochondria. This observation is supported by in vitro findings and suggests that mitochondria are a possible site of T-2 action.
D000818:Animals; D004579:Electron Transport / Q000187:drug effects; D066298:In Vitro Techniques; D008297:Male; D008930:Mitochondria, Liver / Q000187:drug effects* / Q000378:metabolism; D010101:Oxygen Consumption / Q000187:drug effects; D051381:Rats; D011916:Rats, Inbred F344; D012717:Sesquiterpenes / Q000494:pharmacology*; D013605:T-2 Toxin / Q000494:pharmacology*
D012717:Sesquiterpenes; D013605:T-2 Toxin