【摘要】 目的 :探讨不同类型的免疫复合物肾炎大鼠尿液中补体C5b - 9复合物检出的意义。方法 :复制大鼠被动型Heymann肾炎 (PHN)、抗胸腺细胞血清性肾炎 (ATSN)、抗肾小球基底膜性肾炎(AGBMN)及慢性血清病肾炎 (CSDN) 4种动物模型。用双抗体夹心ELISA法定期检测各种肾炎大鼠血液及尿液中补体C5b - 9的含量 ,同时观察大鼠肾小球中C5b - 9的沉积情况。结果 :4种肾炎模型鼠血浆C5b - 9复合物均见上升 ,肾小球内也有C5b - 9复合物的沉积 ,但尿液中C5b - 9含量升高仅见于罹患PHN的大鼠。此外 ,尿液中C5b - 9复合物的升高先于PHN大鼠尿蛋白的升高。结论 :尿液中C5b - 9复合物的检测可作为PHN早期诊断和鉴别诊断的一种敏感性较高的免疫学指标更多还原

【Abstract】 AIM: To explore the significance of measuring urinary complement C5b-9 complex in various types of immune complex (IC) nephritis models of rats. METHODS: The four models of rats, namely, passive Heymann nephritis (PHN), anti-thymocyte serum nephritis(ATSN), anti-glomerular basement membrane nephritis (AGBMN) and chronic serum disease nephritis (CSDN) were reproduced. Then, the contents of complement C5b-9 complex in plasma and urine of the rats were detected with sandwich ELISA. And the deposits of C5b-9 complex in glomeruli of the rats were examined by ABC immunohistochemistry staining. RESULTS: The contents of rat plasma C5b-9 were elevated and deposits of C5b-9 in glomeruli could be detected in the four model rats. But the increased urinary excretion of C5b-9 was observed only in PHN rats. Moreover, the time of urinary C5b-9 complex excretion was earlier than that of urinary protein in the rats with PHN. CONCLUSION: Urinary C5b-9 complex excretion could be taken as one of several sensitive immunologic parameters in diagnosing of PHN and in distinguishing PHN from other type of nephritis.更多还原