[Effect of pyridoxine deficiency on fatty acid metabolism in the rat].

We have studied the effect of pyridoxine deficiency on rat liver fatty acid synthetase using acetyl-1-14C-CoA. We have observed no significant difference in the synthetase activity between the deficient and ad libitum control rats. From in vivo experiments with palmitate-1-14C, linoleate-1-14C or arachidonate-1-14C, we noted an increase in the oxidation of all fatty acids in the deficient animals. Studies with the same tracers on their incorporation rate into liver triglycerides and phospholipids showed an increase in the rate of incorporation of palmitate and linoleate within lipids of deficient rats, but no significant difference was seen with arachidonate.