OBJECTIVE: To analyze the mechanism for the therapeutic effects of tumor necrosis factor α (TNFα) inhibition in a murine model of systemic lupus erythematosus. METHODS: We used the (NZB × NZW)F(1) (NZB/NZW) mouse model of interferon-α-induced lupus nephritis and treated mice with TNF receptor type II (TNFRII) Ig after TNFα expression was detected in the kidneys. Autoantibodies were measured by enzyme-linked immunosorbent assay (ELISA), and autoantibody- forming cells were determined using an enzyme-linked immunospot assay. Activation of splenocytes was analyzed by flow cytometry. Kidneys were harvested and analyzed using flow cytometry, immunohistochemistry, ELISA, Western blotting, and real-time polymerase chain reaction. RESULTS: TNFRII Ig treatment stabilized nephritis and markedly prolonged survival. Autoantibody production and systemic immune activation were not inhibited, but the renal response to glomerular immune complex deposition was attenuated. This was associated with decreases in renal production of chemokines, renal endothelial cell activation, interstitial F4/80(high) macrophage accumulation, tubular damage, and oxidative stress. In contrast, perivascular lymphoid aggregates containing B cells, T cells, and dendritic cells accumulated unabated. CONCLUSION: Our data suggest that TNFα is a critical cytokine that amplifies the response of the nephron to immune complex deposition, but that it has less influence on the response of the systemic vasculature to inflammation.
OBJECTIVE: To analyze the mechanism for the therapeutic effects of tumor necrosis factor α (TNFα) inhibition in a murine model of systemic lupus erythematosus. METHODS: We used the (NZB × NZW)F(1) (NZB/NZW) mouse model of interferon-α-induced lupus nephritis and treated mice with TNF receptor type II (TNFRII) Ig after TNFα expression was detected in the kidneys. Autoantibodies were measured by enzyme-linked immunosorbent assay (ELISA), and autoantibody- forming cells were determined using an enzyme-linked immunospot assay. Activation of splenocytes was analyzed by flow cytometry. Kidneys were harvested and analyzed using flow cytometry, immunohistochemistry, ELISA, Western blotting, and real-time polymerase chain reaction. RESULTS:TNFRII Ig treatment stabilized nephritis and markedly prolonged survival. Autoantibody production and systemic immune activation were not inhibited, but the renal response to glomerular immune complex deposition was attenuated. This was associated with decreases in renal production of chemokines, renal endothelial cell activation, interstitial F4/80(high) macrophage accumulation, tubular damage, and oxidative stress. In contrast, perivascular lymphoid aggregates containing B cells, T cells, and dendritic cells accumulated unabated. CONCLUSION: Our data suggest that TNFα is a critical cytokine that amplifies the response of the nephron to immune complex deposition, but that it has less influence on the response of the systemic vasculature to inflammation.
Authors: Jan Aten; Anja Roos; Nike Claessen; Esther J M Schilder-Tol; Ineke J M Ten Berge; Jan J Weening Journal: J Am Soc Nephrol Date: 2000-08 Impact factor: 10.121
Authors: Lena Schiffer; Jayashree Sinha; Xiaobo Wang; Weiqing Huang; Gero von Gersdorff; Mario Schiffer; Michael P Madaio; Anne Davidson; Gero Von Gonsdorff Journal: J Immunol Date: 2003-07-01 Impact factor: 5.422
Authors: Jennifer R Timoshanko; A Richard Kitching; Yichiro Iwakura; Stephen R Holdsworth; Peter G Tipping Journal: Am J Pathol Date: 2004-06 Impact factor: 4.307
Authors: Xiaoping Qing; Yurii Chinenov; Patricia Redecha; Michael Madaio; Joris Jth Roelofs; Gregory Farber; Priya D Issuree; Laura Donlin; David R Mcllwain; Tak W Mak; Carl P Blobel; Jane E Salmon Journal: J Clin Invest Date: 2018-03-05 Impact factor: 14.808