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      Correlation between Reduction of Polymorphonuclear Leucocytes in Glomeruli Injected with a Newly Developed Monoclonal Antineutrophil Antibody and Proteinuria in Masugi Nephritis

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          Abstract

          The effects of the reduction of neutrophils in glomeruli on the improvement of proteinuria and glomerular injuries were determined in the first (heterologous) phase of Masugi (nephrotoxic) nephritis. Male (6-week-old) WKA/Hkm rats were initially injected with 2.0 ml of a newly developed monoclonal antineutrophil antibody and then injected with 1.0 ml of nephrotoxins. This monoclonal anti-neutrophil antibody was found to have selectively reduced the number of neutrophils in the glomerular capillary lumen in cases of Masugi nephritis by light microscopy. Malondialdehyde (MDA) levels or superoxide dismutase (SOD) activities in renal tissues of such rats were also examined. However, there were no significant differences in the levels of proteinuria and the number of glomerular cells containing resident cells and infiltrated mononuclear cells in the first phase of Masugi nephritis with or without pretreatment with antineutrophil antibody. No significant differences were observed in the levels of MDA or SOD activities in renal tissues of Masugi nephritis with or without pretreatment with such an antibody either. It appeared that infiltration of neutrophils in the glomeruli might not be related to proteinuria and glomerular injuries in the first phase of Masugi nephritis. It was postulated that the massive proteinuria in the first phase of Masugi nephritis might be correlated with the activities of reactive oxygen species induced by the glomerular cells, i.e. glomerular resident cells and infiltrated mononuclear cells.

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          Author and article information

          Journal
          NEF
          Nephron
          10.1159/issn.1660-8151
          Nephron
          S. Karger AG
          1660-8151
          2235-3186
          1992
          1992
          12 December 2008
          : 62
          : 4
          : 444-448
          Affiliations
          Division of Nephrology, Department of Medicine, and Department of Immunology, Juntendo University School of Medicine, Tokyo; Department of Parasitology, Yamagata University School of Medicine, Yamagata, Japan
          Article
          187096 Nephron 1992;62:444–448
          10.1159/000187096
          1338643
          © 1992 S. Karger AG, Basel

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          Page count
          Pages: 5
          Categories
          Original Paper

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