TJN-259 Improves Mesangial Lesions in Experimental Immunoglobulin A Nephropathy in ddY Mice

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概要

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• TJN-259 is a chemical substance based on the structural features of the botanically derived ingredient acteoside. This study was performed in order to elucidate the antinephritic effects of TJN-259 in experimental immunoglobulin A (IgA) nephropathy. In this study, 28-week-old ddY mice were used as a spontaneous model of IgA nephropathy. With regard to spontaneous IgA nephropathy, we investigated the effects of TJN-259 administered from 28 to 40 weeks. In addition, an accelerated model of IgA nephropathy was experimentally induced in ddY mice by oral administration of bovine serum albumin, followed by reticuloendothelial blocking by colloidal carbon injection and heminephrectomy. At 10 weeks after the 3rd carbon injection, we also examined the effects of TJN-259 on accelerated IgA nephropathy. To investigate the effects of TJN-259 on transforming growth factor (TGF)-β1 production in accelerated IgA nephropathy, kidneys were isolated and measured TGF-β1 by the enzyme-linked immunosorbent assay (ELISA) method. The administration of TJN-259 to mice with spontaneous IgA nephropathy decreased the incidence of mesangial expansion as well as the number of nuclei per glomerular cross-section in comparison with that of non-treated mice. In addition, TJN-259 treatment prevented the increase in the incidence of mesangial expansion, crescent formation, and segmental sclerosis in glomeruli in accelerated IgA nephropathy. TJN-259 also inhibited the increased immunostaining score of collagen type IV and TGF-β1 in glomeruli of accelerated IgA nephropathy. Treatment with TJN-259 inhibited the increases in renal total and mature TGF-β1 protein levels in accelerated type IgA nephropathy. TJN-259 failed to inhibit the increase in serum IgA levels in both models. These results suggest that TJN-259 was an effective treatment against IgA nephropathy in ddY mice, acting via the suppression of TGF-β1 production in glomeruli.

• Pharmaceutical Society of Japanの論文

著者

• TAKEDA Hiroshi

  Department of Medical Information Science, Osaka University Graduate School of Medicine

• 竹田 秀一

  ツムラ研究本部

• HATTORI Tomohisa

  Tsumura and Co., Pharmacology Research Department, R&D Division

• TAKEDA Shuichi

  Tsumura and Co., Pharmacology Research Department, R&D Division

• Hattori Tomohisa

  Tsumura & Co. Tsumura Res. Laboratories

• Sadakane Chiharu

  Tsumura Research Laboratories, Tsumura & Co.

• Koseki Junichi

  Tsumura Research Laboratories, Tsumura & Co.

• Hasegawa Yoshihiro

  Tsumura Research Laboratories, Tsumura & Co.

• Shindo Shoichiro

  Tsumura Research Laboratories, Tsumura & Co.

• 竹田 秀一

  Tsumura & Co. Tsumura Res. Laboratories

• Inagaki Yayoi

  Tsumura Research Laboratories, Tsumura & Co.

• Takeda Hiroshi

  Department Of Earth And Planetary Science The University Of Tokyo

• Takeda Shuichi

  Department Of Drug Metabolism & Disposition Tsumura Research Institute Tsumura & Co.

• Sadakane Chiharu

  Tsumura Research Laboratories Tsumura & Co.

• Hasegawa Yoshihiro

  Tsumura Research Laboratories Tsumura & Co.

• Koseki Junichi

  Tsumura Research Laboratories Tsumura & Co.

• Takeda Hiroshi

  Division Of Pharmasciences Department Of Pathophysiology And Therapeutics Faculty Of Pharmaceutical

• Sadakane Chiharu

  Tsumura Central Research Laboratory Tsumura Co.

• Shindo Shoichiro

  Tsumura Research Laboratories Tsumura & Co.

• Takeda Hiroshi

  Department Of Abdominal Surgery Tenri Hospital

• Takeda Shuichi

  Tsumura & Co. Tsumura Research Laboratories

• Inagaki Yayoi

  Tsumura Research Laboratories, Tsumura & Co.

• Hasegawa Yoshihiro

  Tsumura & Co., Tsumura Research Laboratories

• Shindo Shoichiro

  Tsumura & Co., Tsumura Research Laboratories

• Koseki Junichi

  Tsumura Research Laboratories, Tsumura & Co.

• Takeda Shuichi

  Tsumura Research Laboratories, Tsumura & Co.

• Hattori Tomohisa

  Tsumura Research Laboratories, Tsumura & Co.

• Koseki Junichi

  Tsumura & Co., Tsumura Research Laboratories

• Sadakane Chiharu

  Tsumura & Co., Tsumura Research Laboratories

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