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PostPosted: Fri 13:12, 04 Mar 2011    Post subject: ugg boots ireland 急性脑&#

急性脑卒中患者血清甲状腺激素水平的测定
受到损伤,[link widoczny dla zalogowanych],王羟色胺等神经递质发生变化,[link widoczny dla zalogowanych],5一羟色胺降低可抑制删的分使TSH分泌减少,因而引起T]、T.分泌璃少。同时愈牲瞄血管病变时.机体应激反应增强.肾上腙皮癍激素分泌增加.它既可抑放射免疫学杂志"2~00年第13卷第1期制TSFI的分泌,还可抑制甲状腺激素的外周教应,使转变为T1减少,[link widoczny dla zalogowanych],使T、TSFI水平下降,[link widoczny dla zalogowanych]。本文资料显示,急性脑出血和脑梗塞患者血清n水平均明显高于正常对照组.可能是急性脑卒中引起下丘脑和垂体的直接或间接损伤,从而引起垂体腺细胞的变性破坏,使垂体细胞分秘或贮存的大量TSH释放人垂体血管丛.并由于瞄血管病时血脑屏障破坏.使大量T/IS进人体循环,从而引起甲状腺激素大量分泌,因为TSH半衰期仅为54分钟,再加上垂体前叶腺细胞和下丘脑核团处的分泌细胞的损伤为激素释放后的变性改变.这种改变为可逆性的,随着变性细胞修复和外周循环中高T.的负反馈调节.所以测得血清中1sH水平仍处于低水平。L半衰期为6~7天,正在我们检测时间内,另外.危重病人n血浆的蛋白结台位点移位,导致血一41一常对照组,半衰期为I天,因此,T,、TSH增高为一过性的,所以测不至其增高,[link widoczny dla zalogowanych]。由此可见.测定急性脑卒中患者甲状腺激素水平对判断病情严重程度和估计预后有一定的意义。
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