Paraxanthine as a Natural Antithyroid Substance

摘要: MANY substances have been found to anti-thyroid activity in the vertebrate body, some of them natural constituents body. But it has never clear what extent these exert their antithyroid properties normal life. In this letter we report results which led us conclusion that basal metabolic rate is normally controlled rat not by concentration thyroid secretion internal medium alone but interaction between and an substance identified as paraxanthine (1:7-dimethylxanthine). The also give indication nature interaction.