机构地区:[1]山东省济宁市第一人民医院肾内科,272000
出 处:《中华医学杂志》2016年第9期707-711,共5页National Medical Journal of China
摘 要:目的对微量白蛋白尿IgA肾病伴补体C3沉积患者的临床、病理资料以及预后进行分析,探讨补体C3沉积在微量白蛋白尿IgA肾病中的意义。方法回顾性分析济宁市第一人民医院。肾内科2009年1月至2015年1月肾活检确诊且随访时间〉6个月的微量白蛋白尿IgA肾病共127例患者的临床及病理资料,依据免疫荧光下补体c3在系膜区的沉积,分为阳性组(72例,56.7%)和阴性组(55例,43.3%),以24h尿蛋白定量〉1g或肾穿刺时血肌酐值(Scr)正常者进展至Scr异常或肾穿刺时Scr异常者出现Scr升高1倍以上为随访终点,用Kaplan—Meier法计算肾脏生存率。结果共127例微量白蛋白尿IgA肾病患者成功进行随访,平均随访时间为(49.6±22.7)个月。补体c3沉积阳性组在24h尿白蛋白定量[(261.3±47.4)比(238.7±51.9)mg,P=0.011]、Scr[98.0(56.4,118.6)比85.7(51.9,107.8)μmol/L,P=0.003]、尿酸[(384.0±93.7)比(360.5±88.4)μmol/L,P=0.043]、血清IgA[(3.36±1.17)比(3.12±1.05)g/L,P=0.044]水平显著高于阴性组,而血清补体c3值[(0.70±0.42)比(0.98±0.49)g/L,P=0.047]显著低于阴性组。与补体c3沉积阴性组相比,阳性组在Lee’sⅢ级及以上分级[21(16.5%)比11(8.7%),P=0.034]、肾小球硬化或粘连[29(22.8%)比19(15.0%),P=0.047]、肾小管萎缩或间质纤维化[13(10.2%)比8(6.3%),P=0.027]、新月体[7(5.5%)比2(1.6%),P=0.035]病理改变上更为严重。补体c3沉积阳性组和阴性组分别有38例、14例进入随访终点,Kaplan-Meier生存分析显示补体c3沉积阳性组肾脏中位生存时间显著短于阴性组[(52.6±8.9)比(66.1±9.7)个月,P=0.019]。结论伴系膜区补体c3沉积的微量白蛋白尿IgA肾病患者临床及病理表现更重,预后不容乐观,应在Objective To analyze the clinical and pathological data and prognosis of IgA nephropathy patients with microalbuminuria and deposition of C3, and to investigate the significance of C3 deposition in IgA nephropathy with microalbuminuria. Methods The clinical and pathological data of 127 IgA nephropathy patients with microalbuminuria confirmed by renal biopsy in the Jining No. 1 People's Hospital from January 2009 to January 2015 and minimum 6-month follow-up was reviewed, and patients were divided into positive group (72 cases,56. 7% )and negative group (55 cases,43.3% ) according to the deposition of C3 in the mesangial area of glomentli. 24 h urine quantitative protein being more than 1 g, or serum creatinine level becoming abnormal or double by renal biopsy was defined as endpoint of follow-up. Renal survival was calculated by Kaplan-Meier survival analysis. Results A total of 127 IgA nephropathy patients with microalbuminuria were followed up successfully, with an average follow-up of (49.6 ± 22. 7 ) months. 24 h urine albumin[ (261.3±47.4) vs (238.7 ±51.9) mg, P =0. 011 ], serum creatinine value [98.0(56.4,118.6) vs 85.7(51.9,107.8) μmol/L, P=0.003], uric acid value[ (384.0 ±93.7) vs ( 360. 5 ± 88.4) μmol/L,P = 0. 043 ] and serum IgA value [ ( 3.36 ±1.17 ) vs ( 3.12 ± 1.05 ) g/L, P = 0. 044] were significantly higher in the C3 positive group than those in the negative group, while the serum complement C3 was significantly lower [ (0. 70 ± 0. 42) vs (0. 98 ±0. 49) mg, P = 0. 047 ]. Pathologicalchanges [ Lee's grade 111 and above m : 21 ( 16. 5% ) vs 11 ( 8.7% ), P = 0. 0341, glomerular sclerosis or adhesions [ 29 ( 22. 8% ) vs 19 ( 15.0% ), P = 0. 047 ], renal tubular atrophy or interstitial fibrosis [ 13 ( 10. 2% ) vs 8 (6. 3 % ) ,P = 0. 027 ] and crescent formation [ 7 (5.5 % ) vs 2 ( 1.6% ), P = 0. 0351 in the complement C3 positive group were more severe than those in the negative group. 38 cases of complem
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