地方性甲状腺肿患区饮食致大鼠甲状腺肿的代谢表现

本文测定地甲肿患区饮食致大鼠甲状腺肿的代谢指标,实验前,部分大鼠注射30％碘化油0.2ml做对照组。4～7个月处死。实验结果表明,甲状腺碘浓度下降,MIT/DIT(MIT:一碘酪氨酸,DIT:二碘酪氨酸)、T_3/T_4(T_3:三碘甲腺原氨酸、T_4;甲状腺素)比值和TPO(甲状腺过氧化物酶)活性升高。这些代谢表现说明,实验组大鼠处于缺碘状态,并和人工低碘食致大鼠甲状腺肿的代谢表现一致。尽管甲状腺碘浓度下降,但组织总碘无明显变化,加上T_3/T_4比值和TPO活性增高,说明实验组大鼠对碘缺乏有一定的适应能力。

THE METABOLIC PATTERNS IN GOITROUS RATS INDUCED BY DIET OF ENDEMIC GOITER REGION

The iodine concentration, MIT/DIT and T3/T4 ratios and peroxidase activity in thyroid of the rats fed on endemic goiter region diet of county Chefong in the Inner Mongolia Autonomous Region and control rats injected with 30% iodine oil 0.2 ml besides the same diet were investigated.The result demonstrated that the iodine concentration of thyroid was decreased with increasing of thyroid weight, and the MIT/DIT ,T3/T4 ratios in thyroid and thyroid peroxidase activity of the rats fed on endemic region diet were higher than that of control.These metabolic patterns showed that the rats fed on endemic region diet were in iodine deficient state and consistent with those rats fed on artificial low iodine diet.