PMID- 12897090 OWN - NLM STAT- MEDLINE DCOM- 20031117 LR - 20190513 IS - 0931-0509 (Print) IS - 0931-0509 (Linking) VI - 18 IP - 8 DP - 2003 Aug TI - Glomerular expression of C-C chemokines in different types of human crescentic glomerulonephritis. PG - 1526-34 AB - BACKGROUND: Crescentic glomerulonephritis (CGN) presents a rapidly progressive glomerulonephritis clinically, in which macrophages play a crucial role in the pathogenesis. However, the precise molecular mechanism of macrophage recruitment and activation has not been fully elucidated. C-C chemokines, monocyte chemoattractant protein-1 (MCP-1) and macrophage inflammatory protein-1alpha and beta (MIP-1alpha and MIP-1beta), are major chemoattractants for macrophages. We attempted to study the expression of C-C chemokines and their correlation with CD68-positive macrophages in crescentic glomeruli to investigate further their possible roles in crescent formation and progression to fibrosis in different types of human CGN. METHODS: The expression of MCP-1, MIP-1alpha, MIP-1beta and CD68 was detected in glomeruli with different forms of crescents (cellular, fibrocellular and fibrous crescents) by immunohistochemistry in serial sections of renal biopsies taken from 32 patients with biopsy-proven CGN including eight patients with anti-glomerular basement membrane (GBM) disease (type I CGN), 12 patients with immune complex-mediated CGN (type II CGN) and another 12 patients with pauci-immune CGN (type III CGN) enrolled in this study. Eight normal human kidneys were obtained from cadaveric renal transplant donors whose kidneys were technically unsuitable for transplantation, serving as controls. RESULTS: MCP-1, MIP-1alpha, MIP-1beta and CD68 were undetectable in glomeruli of normal kidney. In crescentic biopsies, MCP-1, MIP-1alpha, MIP-1beta and CD68 were detected in fibrocellular crescents and were even more prominent in cellular crescents, but were undetectable in fibrous crescents. Using consecutive sections for staining, it was demonstrated that a high proportion of infiltrating CD68-positive macrophages, mainly localized to the area of the expression of chemokines, were MCP-1, MIP-1alpha and MIP-1beta positive in crescents. Chemokines were expressed mainly by CD68-positive macrophages and parietal epithelial cells in crescents. The number of MCP-1- and MIP-1alpha-positive cells in glomeruli with cellular crescents was positively correlated with the number of CD68-positive cells (r = 0.568 and 0.749, respectively, both P < 0.01). The number of MCP-1- and MIP-1alpha-positive cells and the incidence of Bowman's capsule rupture in glomeruli of patients with type I CGN were higher than those of type II and type III CGN. CONCLUSIONS: These observations suggest that the expressed C-C chemokines, MCP-1, MIP-1alpha and MIP-1beta, may mediate the inflammatory process of crescent formation and progression to fibrosis. The strong correlation of MCP-1 and MIP-1alpha with infiltrating macrophages within glomeruli with cellular crescents suggested that these chemokines might be of particular importance for macrophage recruitment to this site. MCP-1 and MIP-1alpha were correlated to type I CGN with its more severe inflammatory course and worse prognosis. The variance of glomerular expression of C-C chemokines may contribute to the difference in histopathological features and prognosis in these three types of CGN. FAU - Liu, Zhi-Hong AU - Liu ZH AD - Research Institute of Nephrology, Nanjing University School of Medicine, Jinling Hospital, Nanjing, PR China. zhihong@public1.ptt.js.cn FAU - Chen, Shu-Fen AU - Chen SF FAU - Zhou, Hong AU - Zhou H FAU - Chen, Hui-Ping AU - Chen HP FAU - Li, Lei-Shi AU - Li LS LA - eng PT - Journal Article PL - England TA - Nephrol Dial Transplant JT - Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association JID - 8706402 RN - 0 (Antigens, CD) RN - 0 (Antigens, Differentiation, Myelomonocytic) RN - 0 (CD68 antigen, human) RN - 0 (Chemokine CCL2) RN - 0 (Chemokine CCL3) RN - 0 (Chemokine CCL4) RN - 0 (Chemokines, CC) RN - 0 (Macrophage Inflammatory Proteins) SB - IM MH - Adolescent MH - Adult MH - Antigens, CD/metabolism MH - Antigens, Differentiation, Myelomonocytic/metabolism MH - Chemokine CCL2/metabolism MH - Chemokine CCL3 MH - Chemokine CCL4 MH - Chemokines, CC/*metabolism MH - Child MH - Disease Progression MH - Female MH - Glomerulonephritis/*metabolism MH - Humans MH - Immunoenzyme Techniques MH - Immunohistochemistry MH - Kidney Glomerulus/*metabolism MH - Macrophage Inflammatory Proteins/metabolism MH - Macrophages/metabolism MH - Male MH - Middle Aged EDAT- 2003/08/05 05:00 MHDA- 2003/12/03 05:00 CRDT- 2003/08/05 05:00 PHST- 2003/08/05 05:00 [pubmed] PHST- 2003/12/03 05:00 [medline] PHST- 2003/08/05 05:00 [entrez] AID - 10.1093/ndt/gfg172 [doi] PST - ppublish SO - Nephrol Dial Transplant. 2003 Aug;18(8):1526-34. doi: 10.1093/ndt/gfg172.