应用甲状腺素的实验组和不用甲状腺素的对照组S.D鼠相比,用药一周和两周后,两组动物的体重无显著差异。而心脏重量差异非常显著。高甲状腺素用药一周,实验组S.D鼠的左、右心室壁心肌细胞的体积、长度、横切面积、表面积,宽度都显著增加。其中右心室心肌细胞厚度增加不显著而左心室心肌细胞厚度则明显增加;而在用药两周后,左心室心肌细胞和右心室心肌细胞厚度的增加均不显著。 The body weight of the two groups of animals was not significantly different between the experimental group treated with thyroxine and the control group S.D without thyroxine after one week and two weeks of administration. The difference in heart weight is very significant. One week after hyperthyroidism, the volume, length, cross-sectional area, surface area and width of left and right ventricle myocardial cells in the experimental group were significantly increased. There was no significant increase in the thickness of right ventricular cardiomyocytes and a significant increase in the thickness of left ventricular cardiomyocytes; however, there was no significant increase in the thickness of left ventricular cardiomyocytes and right ventricular myocytes after two weeks of treatment.