[Role of the microsomal ethanol-oxidizing system in regulating linoleoyl CoA desaturase activity in long-term ethanol loading].

Long-term ethanol load resulted in a decrease of the rat liver linoleyl desaturase activity and the activation of MEOS accompanied by an increase in the activity of NADPH-dependent chain and the initial steps of NADH-dependent chain of microsomal electron transport, indicating electron transfer from NADH to cytochrome P-450. It is suggested that, when the main potential of NADH- and NADPH-dependent chains is transferred to microsomal ethanol oxidation, insufficient electron supply for linoleyl-CoA desaturase decreases the activity of this process.