Factors influencing lipoprotein lipase activity in choline deficiency

Subcutaneous injections of the lipotropic agent, ethyl trichloracetate, to rats with established choline deficiency raised their plasma triglycerides by 60% and completely removed the hyperglyceridaemic response of Triton WR 1339. The plasma triglyceride levels of choline-supplemented rats were depressed slightly by ethyl trichloracetate administration, which was effective in abolishing response to Triton WR 1339. Lipoprotein lipase activity of epididymal fat pad was stimulated 60% while plasma lipoprotein was not stimulated by ethyl trichloracetate. The increased peripheral removal of low-density lipoprotein-triglyceride complex, allowing greater use to be made of existing apo-proteins, may explain the lipotropic character of the ester.