补体C5b-9抗血清对抗胸腺细胞血清性肾炎大鼠肾组织一氧化氮合成及其病变的影响

目的: 探讨抗鼠补体C5b-9复合物抗血清对系膜增生性肾炎大鼠肾组织合成一氧化氮 (NO)及其病变的作用。方法: 复制大鼠系膜增生性肾小球肾炎即抗胸腺细胞血清性肾炎 (ATSN)模型 ,用抗大鼠C5b-9复合物抗血清处理 ,观察其对ATSN大鼠NO相关指标及其病变的影响。结果: 抗鼠C5b-9复合物抗血清既能减少ATSN大鼠肾组织诱生性NO合酶 (iNOS)mRNA的表达和大鼠尿液中硝酸盐 /亚硝酸盐 (NO₃^- /NO₂^- )排泄量 ,还能减低大鼠肾组织病变的程度。NOS抑制剂L -NAME也可降低尿NO₃^- /NO₃^- 排泄量 ,同时减轻肾组织病变程度。结论: 抗鼠C5b-9复合物抗血清能够抑制肾细胞NO的合成及其肾小球系膜细胞的增生。

Effect of antiserum against complement C5b-9 complexes on nitric oxide(NO) synthesis and pathologic changes in renal tissue of ATSN rats

AIM: To explore the effect of antiserum against rat complement C5b-9 complexes on nitric oxide synthesis and pathologic changes in renal tissue of rats with mesangioproliferative glomerulonephritis. METHEDS: The rat model of mesangioproliferative glomerulonephritis,namely,anti-thymocyte serum nephritis(ATSN) was established and the rats with ATSN were treated with antiserum against complement C5b-9 complexes. Some parameters related to NO and pathologic changes of the rats were observed.RESULTS:Anti-C5b-9 serum not only reduced the expression of inducible NO synthase(iNOS) mRNA in renal tissue and urinary content of nitrate/nitrite(NO - 3/ NO - 2) of rats with ATSN, but also reduced renal pathologic changes. L-N G-nitro arginine methylester (L-NAME) also reduced the contents of urinary NO - 3/NO - 2 and the renal pathologic changes of rats with ATSN. CONCLUSION:The antiserum against rat complement C5b-9 complexes inhibited glomerular NO synthesis and glomerular mesangial cell proliferation of rats with ATSN.