›› 1997, Vol. 17 ›› Issue (4): 220-222.

• 论文 • 上一篇    下一篇

高甲状腺激素水平作用下大鼠心肌病理学改变

  

  1. 1.济南军区总医院病理科,济南 250031;2.军事医学科学院实验动物中心
  • 收稿日期:1997-05-28 出版日期:1997-01-25 发布日期:2013-03-19

Preliminary Study on Myocardium Injury under High Serum Levels of Thyroid Hormones in Rats

  1. 1.Department of Pathology’General Hospital of Jinan Command ,PLA,Jinan 250031;2.Laboratory Animal Center, Academy of Military Medical Sciences
  • Received:1997-05-28 Online:1997-01-25 Published:2013-03-19

摘要: 给大鼠口服甲状腺片,平均每只4mg/d,连续60d,然后取血测三碘甲腺原氨酸(T3)和甲状腺素(T4)浓度,并观察心肌病理学改变。结果:实验组大鼠出现甲亢体征,T3、T4分别为0.81±0.11和34.70±0.91nmol/L,均高于对照组(P<0.05);光镜下,见心肌纤维排列紊乱,横纹不清,纵纹断裂,淋巴细胞浸润,并见灶状纤维化和灶状脂肪变性;电镜下,见大部分肌原纤维断裂,肌浆内线粒体肿大,Z线消失或相互融合。

关键词: 甲状腺激素, 甲状腺机能亢进, 心肌, 病理学, 大鼠

Abstract: The high serum levels of thyroid hormones in rats were induced by oral administration of thyroid tablets (average dose for each rat :4mg/d×60d). The serum levels of T3 and T4 of the rats were measured,and the myocardial histopathological changes were observed. The results showed that at the end of the administration the serum levels of T3,T4 were 0.81±0.11,34.70±0.91 nmol/L respectively,and were higher than those in control animals. Under optic microscope the myocardial fibers were found to be disorder in pattern with vague cross striations and broken longitudinal striations. Fibrosis,fatty degeneration and lymphocyte infiltration were found in the pathological foci. Under electron microscope, most of the myofibrils were found to be broken, the Z - lines disappeared or fused with each other,and the mitochondrias in the myocytes were swelled.

Key words: Thyroid hormones, Hyperthyroidism, Myocardium pathology, Rat