Effect of Thyroid-Active Substances on the Betaine-Homocysteine Transmethylase Activity of Rat Liver

Abstract
The incorporation of iodinated casein or desiccated thyroid into the diets of rats, or the subcutaneous injection of l-thyroxine, caused a decrease in the liver betaine-homocysteine transmethylase activity. Supplementation with dried, defatted pork partially counteracted the effect of iodinated casein.