狼疮肾炎患者肾组织中载脂蛋白E的表达及意义

目的 了解狼疮肾炎(LN)肾组织中载脂蛋白E(APOE)的表达,并探讨其与LN肾脏病理改变和肾功能损害的关系.方法 用免疫组织化学方法对40例LN患者.肾组织APOE的表达进行检测,并对其与LN的肾脏病理改变和肾功能损害的相关性进行分析.结果 健康肾脏组织有较弱的ApoE表达;LN肾组织APOE的表达较健康肾组织明显增高肾小球(31.2±11.0)与(3.0±1.6);肾小管(71.64±8.90)与(0.60±0.06)],并且Ⅳ型LN患者肾组织APOE表达量高于非Ⅳ型LN患者肾小球(38.4±4.5)与(18.0±4.6);肾小管间质(77.6±2.5)与(60.0±3.2)];Spearman相关分析显示LN肾组织ApoE的表达与LN肾脏病理活动指数和肾功能呈显著相关(P＜0.01).结论 LN患者肾脏组织中ApoE的表达增高,尤以Ⅳ型LN为著,其表达量可反映LN肾脏活动性病变及肾脏损害情况.

Immunohistologic analysis of renal ApoE expression in lupus nephritis

Objective To investigate renal expression of ApoE in human lupus nephritis (LN) and its relationship with renal damages.Methods Renal expression of ApoE was examined in 40 LN patient biopsy samples by immunohistochemieal staining.The relationship between ApoE levels" and renal pathologic changes,renal injuries was analyzed.Results Only weak ApoE expression was found in normal renal tissue.The expression of ApoE was significantly higher in LN patients glomerular:(31.2±11.0) vs (3.0±1.6);tub-ular:(71.64±8.90) vs (0.60±0.06)].The expression of ApoE was higher in class IV than non-class IV LN glomerular: (38.4±4.5) vs (18.0±4.6);tubular: (77.6±2.5) vs (60.0±3.2)].Spearman's relation-ship analysis showed that the expression of ApoE in glomerular and tubular was closely related to the renal histological score activity index and functional changes in LN (P＜0.01).Conclusion The expression of ApoE is high in renal tissues of LN,especially in class IV,and the high expression may be associated with LN activity and progressive renal dysfunction.