Podocyte and endothelial cell injury lead to nephrotic syndrome in proliferative lupus nephritis

被引:17
|
作者
Nawata, Aya [1 ,2 ]
Hisano, Satoshi [3 ]
Shimajiri, Shohei [1 ]
Wang, Ke-Yong [1 ,4 ]
Tanaka, Yoshiya [2 ]
Nakayama, Toshiyuki [1 ]
机构
[1] Univ Occupat & Environm Hlth, Dept Pathol, Kitakyushu, Fukuoka, Japan
[2] Univ Occupat & Environm Hlth, Dept Internal Med 1, Kitakyushu, Fukuoka, Japan
[3] Fukuoka Univ, Dept Pathol, Fac Med, Fukuoka, Japan
[4] Univ Occupat & Environm Hlth, Shared Use Res Ctr, Kitakyushu, Fukuoka, Japan
关键词
endothelial cell; lupus nephritis; nephrotic syndrome; podocyte; FOCAL SEGMENTAL GLOMERULOSCLEROSIS; MINIMAL CHANGE DISEASE; PROTEINURIA; CLASSIFICATION; ERYTHEMATOSUS; NEPHROPATHY; MECHANISMS; EXPRESSION; URINE;
D O I
10.1111/his.13454
中图分类号
Q2 [细胞生物学];
学科分类号
071009 ; 090102 ;
摘要
Aims: Nephrotic syndrome (NS) is a major manifestation of lupus nephritis (LN). The dysregulation of podocytes, the glomerular basement membrane (GBM) and endothelial cells (ECs) results in proteinuria in glomerular diseases. The aim of our study was to clarify whether the dysregulation of these barriers is associated with NS in proliferative LN and membranous LN. Methods and results: Fifty-six patients with NS, including minimal change NS in 15, primary membranous nephropathy (PMN) in 13, class III/IV LN in 15, and class V LN in 13, were enrolled in this study. Subjects with idiopathic haematuria were assigned as controls. Glomerular expression of Wilms tumour protein 1 (WT1), nephrin, synaptopodin and podocalyxin was evaluated by immunohistochemistry (IHC) and real-time quantitative reverse transcription polymerase chain reaction. EC injury was evaluated by CD31 immunostaining and electron microscopy (EM). Reduced expression of WT1, nephrin and synaptopodin was found in PMN, class III/IV LN and class V LN as compared with controls by IHC and mRNA analysis. Reduced expression of these molecules was not different between class III/IV LN and class V LN. Reduced numbers of CD31-positive ECs were found in class III/IV LN as compared with class V LN. EC injury showing subendothelial widening on EM was apparent in class III/IV LN as compared with class V LN. Foot process effacement was found only along the GBM showing EC injury in class III/IV LN. Conclusions: Our study suggests that coexistence of podocyte and EC injury may lead to NS in proliferative LN. Podocyte damage alone leads to NS in membranous LN.
引用
收藏
页码:1084 / 1092
页数:9
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