Differential Effects of FMLP-Activated Neutrophils from Patients with IgA Nephropathy Enhanced Endothelin 1 Production of Glomerular Mesangial Cells
| العنوان: | Differential Effects of FMLP-Activated Neutrophils from Patients with IgA Nephropathy Enhanced Endothelin 1 Production of Glomerular Mesangial Cells |
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| المؤلفون: | Y.H. Lai, Jinn-Yuh Guh, Hung-Chun Chen, J.M. Chang |
| المصدر: | Nephron. 89:274-279 |
| بيانات النشر: | S. Karger AG, 2001. |
| سنة النشر: | 2001 |
| مصطلحات موضوعية: | Adult, Male, Neutrophils, Glomerular Mesangial Cell, Neutrophile, urologic and male genital diseases, Neutrophil Activation, Nephropathy, Superoxides, medicine, Humans, RNA, Messenger, Endothelin-1, Mesangial cell, urogenital system, business.industry, Glomerulonephritis, IGA, Glomerulonephritis, Trypan Blue, medicine.disease, Endothelin 1, Coculture Techniques, Glomerular Mesangium, Up-Regulation, N-Formylmethionine Leucyl-Phenylalanine, Immunology, Female, Endothelin receptor, business, Infiltration (medical) |
| الوصف: | Background: Neutrophil infiltration in the glomeruli is common in patients with IgA nephropathy (IgAN). The pathogenetic roles of the infiltrated neutrophils and their relationship with glomerular mesangial cells, however, are not clear. Methods: We examined the effects of coculture with N-formyl-methionyl-leucyl-phenylalanine (FMLP) activated neutrophils on the viability, endothelin 1 (ET-1) production, and ET-1 mRNA expression of rat glomerular mesangial cells. Neutrophils were isolated from 15 IgAN patients, from 13 patients with non-IgA mesangial proliferative glomerulonephritis (MsPGN), and from 10 normal controls. Results: The ET-1 production by mesangial cells was significantly higher after stimulation with FMLP-activated neutrophils from IgAN patients than that of MsPGN patients and normal controls, and this effect was significantly abolished by pretreating mesangial cells with superoxide dismutase and partly abolished by catalase. The ET-I mRNA expression of mesangial cells showed a parallel increase with ET-1 protein. The trypan blue exclusion test showed significant mesangial cell death after stimulation with FMLP-activated neutrophils as compared with quiescent neutrophils, and the cell death was also prevented by superoxide dismutase but not catalase. The FMLP-activated neutrophils from IgAN patients produced more superoxide than those of MsPGN patients and normal controls. Conclusion: The FMLP-activated neutrophils from patients with IgAN have differential effects in enhancing the cell death and the ET-1 production of glomerular mesangial cells through the release of superoxide. |
| تدمد: | 2235-3186 1660-8151 |
| DOI: | 10.1159/000046085 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f502ac90ebf2ffdce00d1260101d2e8 https://doi.org/10.1159/000046085 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi.dedup.....4f502ac90ebf2ffdce00d1260101d2e8 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 22353186 16608151 |
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| DOI: | 10.1159/000046085 |