Clinical Study
Dendritic cell and M2 macrophages are associated with the severity of disease in IgA nephropathy patients
Lin Jieshan, Hu Wenxue, Hao Wenke, Yu Feng, Liu Wei, Wu Yanhua, Liang Xinling
Published 2019-11-15
Cite as Chin J Nephrol, 2019, 35(11): 809-815. DOI: 10.3760/cma.j.issn.1001-7097.2019.11.002
Abstract
ObjectiveTo investigate the number and distribution of dendritic cells (DCs), macrophages and M2 macrophages in renal tissues of patients with IgA nephropathy (IgAN) and their correlation with clinicopathological parameters, and explore its role in the progression of IgAN.
MethodsRenal tissue samples from 42 patients aged ≥18 years with IgAN were collected by kidney biopsy in Guangdong Provincial People's Hospital from January 2018 to June 2018. The patients were divided into different groups according to Oxford classification and Lee grade classification criteria. The distribution and number of DCs (CD209), macrophages (CD68) and M2 macrophages (CD68 and CD206) were detected by immunohistochemistry. Spearman correlation test was used to analyze the correlation between the number of DCs and macrophages in renal tissues and clinical pathological parameters.
ResultsThe number of DCs in the glomeruli of the M1, T0 and C1 groups increased significantly compared with the M0, T1 and C0 groups, and the number of DCs in the renal interstitium of the T1 group increased significantly compared with the T0 group (all P<0.05). The number of glomerular macrophages in group C1 was significantly higher than that in group C0. The number of macrophages in S1, T1 and Lee IV-V tubulointerstitial groups was significantly higher than that in S0, T0 and Lee II-III groups (P<0.05). The number of M2 macrophages in the S1, T1 and Lee IV-V groups was significantly higher in the tubulointerstitial group than in the S0, T0 and Lee II-III groups (all P<0.05). The blood urea nitrogen, serum creatinine and 24 h urine protein levels in the T1 and Lee IV-V groups were significantly higher than those in the T0 and Lee II-III groups, and the serum albumin levels in the Lee IV-V group were significantly lower (all P<0.05). Spearman correlation analysis showed that the number of DCs in renal interstitium was positively correlated with the proportion of tubulointerstitial fibrosis. There were a positive correlation between the proportion of glomerular segmental sclerosis and tubulointerstitial fibrosis and renal interstitial macrophages and M2 macrophages. The number of M2 macrophages was positively correlated with serum creatinine and 24 h urine protein (both P<0.05).
ConclusionsThe number of DCs and M2 macrophages in kidneys are positively correlated with the clinicopathological features of IgAN patients, which indicates that they may be associated with disease progression.
Key words:
Glomerulonephritis, IgA; Dendritic cells; Macrophages; Biopsy; Fluoroimmunoassay
Contributor Information
Lin Jieshan
Shantou University Medical College, Shantou 515041, China
Department of Nephrology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
Hu Wenxue
Department of Nephrology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
Hao Wenke
Department of Nephrology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
Yu Feng
Department of Nephrology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
Liu Wei
Department of Nephrology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
Wu Yanhua
Department of Nephrology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
Liang Xinling
Department of Nephrology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
