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甲状腺和胃肠都起源于原始前肠。在成年期,甲状腺的生理活动与甲状腺素的外周代谢有关。消化道对甲状腺素外周代谢起重要作用,在病态时消化道和甲状腺也相互发生影响,因而两者之间关系密切。甲状腺与消化道的生理联系甲状腺素的分泌受下丘脑和垂体调节。血液中的甲状腺素绝大部分与蛋白质结合转运至全身各部,游离的非常少。甲状腺素的载体蛋白有甲状腺结合球蛋白(TBG)、前白蛋白与白蛋白,这些蛋白在肝脏形成。正常妊娠时雌激素增加,促使肝脏产生更多的TBG,血清T_4与T_3总量相应增加,但游离T_4与T_3仍正常。血
Both thyroid and gastrointestinal originate in the primal foregut. In adulthood, thyroid physiological activity and thyroid hormone peripheral metabolism related. The digestive tract plays an important role in the peripheral metabolism of thyroxine. In the morbid state, the digestive tract and thyroid gland also affect each other, and the two are closely related. The physiological relationship between the thyroid gland and the digestive tract The secretion of thyroxine is regulated by the hypothalamus and the pituitary gland. Thyroxine in the blood most of the protein binding and transport to the various parts of the body, very little free. Thyroxine carrier protein thyroid binding globulin (TBG), prealbumin and albumin, these proteins formed in the liver. Estrogen increased during normal pregnancy, causing the liver to produce more TBG, serum T_4 and T_3 total increased, but free T_4 and T_3 are still normal. blood