Clinical significance of detection for anti-M-type phospholipase A2 receptor antibody in elderly patients with membranous nephropathy
10.3760/cma.j.issn.0254-9026.2015.02.009
- VernacularTitle:老年膜性肾病患者抗M型磷脂酶A2受体抗体检测的临床意义
- Author:
Guangyu ZHOU
;
Wenlong ZHANG
;
Bo ZHANG
;
Zhenqi ZHUANG
- Publication Type:Journal Article
- Keywords:
Glomerulonephritis,membranous;
Phospholipase A2;
Antibodies,antiphospholipid
- From:
Chinese Journal of Geriatrics
2015;34(2):144-146
- CountryChina
- Language:Chinese
-
Abstract:
Objective To detect serum level of anti-M-type phospholipase A2 receptor (PLA2R) antibody in elderly patients with idiopathic membranous nephropathy (IMN) and to explore its clinical significance in IMN disease.Methods A total of 134 patients with renal biopsy-proved glomerular diseases were enrolled in this study,including 42 elderly cases with IMN,45 non-elderly cases with IMN,19 elderly cases with minimal change nephropathy (MCN),12 elderly cases with IgA nephropathy (IgAN),8 elderly cases with hepatitis B-associated membranous nephropathy (HBV-MN) and 8 elderly cases with focal segmental glomerulosclerosis (FSGS).Western blotting was used to detect serum anti-PLA2R antibody and the correlation of anti-PLA2R antibody with laboratory parameters in elderly IMN patients was analyzed.Results The elderly and non-elderly patients with IMN showed that the positive rate of anti-PLA2R antibody was 71.4％ and 73.3％,respectively (P＞ 0.05).The positive rate of anti-PLA2R antibody in elderly IgA nephropathy,HBV-MN and MCN patients was 16.7 ％,12.5％ and 5.3％ respectively.Anti-PLA2R antibody was not detected in serum from elderly FSGS patients.The positive rates of serum anti-PLA2R antibody were significantly higher in both elderly and non-elderly IMN patients than in elderly patients with secondary MN and other types of glomerlonephritis (P ＜ 0.01).Furthermore,anti-PLA2R autoantibody level was positively correlated with 24-hour urine protein level and negatively correlated with the concentration of serum albumin in elderly patients with IMN (P＜0.01).Conclusions Anti-PLA2R antibody is a sensitive serological marker of IMN.Detection for anti-PLA2R antibody might be helpful for the diagnosis of both elderly and non-elderly IMN and for the monitor of IMN disease severity.
