In Vitro Studies on Mechanism of Action of Thyrotropin Releasing Factor

Abstract
The TSH [thyroid stimulating hormone] secretion from [rat] hemipituitary glands is stimulated in vitro by TRF and this action is blocked by large doses of L-thyroxine. The response to TRF is inhibited by both 2,4-dinitrophenol and oligo-mycin, indicating that energy is required for TRF action. It is not inhibited by cyclohexamide or ouabain.