大鼠心肌组织中雄激素受体的免疫组化研究

目的 观察增龄和性腺发育对雄性大鼠心肌组织中雄激素受体密度的影响。方法 采用免疫组织化学和图像分析法检查性成熟前、成年去性腺、成年和老龄雄性大鼠心肌组织中雄激素受体密度，观察增龄及性腺对雄性大鼠心肌组织中雄激素受体密度的影响。结果 去性腺成年组心肌组织中雄激素受体的免疫反应性最高，其次为老龄组，二者均高于性成熟前组和正常成年组，后2组无显著性差异。结论 性成熟前后性腺发育对雄鼠心肌组织中雄激素受体的密度无明显影响，老龄及去性腺均使雄鼠心肌组织中的雄激素受体密度显著增高。

Immunohistochemical study on androgen receptor in male rat heart

Objective To investigate the influence of aging and castration on the density of andro gen receptor(AR) in the male rat heart. Methods AR in the heart of rats aged 40d,90d(intact and castrated) and 2 years were demonstrated by means of immunohistochemical technique and the den sity of the positive staining was measured by using image analys is. The optical density of AR in the septum of the rats were analyzed by anova and doncan process of the SAS data analysis system. Re sults OD(AR) of the group aged 2 years was higher than that of the groups aged 40d and 90d (0. 3550±0. 0077,0. 3108 0. 0264 and 0. 3149±0. 0200 respectively), the two latter groups showed similarly intensive staining, while the value of castrated group(0. 4136±0. 0320) was signif icantly greater than that of intact same aged group. Conclusion The development of sexual gland has little influence in the density of AR in the male rat heart during prepuberty to adult, both old age and castration increase the density of AR in the rat heart.