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A role of matrix metalloproteinase in pathophysiology of pediatric glomerulonephritis

Research Project

Project/Area Number 07670862
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Pediatrics
Research InstitutionOsaka University

Principal Investigator

SHIMA Masaaki  Osaka University, Faculty of Medicine, assistant professor, 医学部, 助手 (10252660)

Co-Investigator(Kenkyū-buntansha) YAMAMOTO Takehisa  Osaka University, Faculty of Medicine, assistant professor, 医学部, 助手 (30231674)
YAMAOKA Kanji  Osaka University, Faculty of Medicine, assistant professor, 医学部, 助手 (60144490)
松本 小百合  大阪大学, 医学部, 助手
Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1996: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1995: ¥1,400,000 (Direct Cost: ¥1,400,000)
Keywordschronic glomerulonephritis / matrix metalloproteinase / matrix / マトリックス / matrix metallapnoteinrre / 腎炎
Research Abstract

Purpose
In this reseach, we have examined a role of matrix metalloproteinase for the development of pediatric glomerulonephritis.
Method
Glomerolus are microdissected from the kidney tissue in patients with glomerulonephritis, and cultured in 96 wells for 48 hours under serum-unsupplimented condition. The supernatant was obtainted and stored before the anaysis of matrix metalloproteinase. Samples were diluted into an equal volume of sample buffer, loaded without boiling and separated at 4゚C.After the electrophoresis, the gels were washed twice for 15 min.in 25% Triton X-100. The gels were incubated in a solution of 50 mM Tris-HCL containing 5 mM CaCl_2 and 1 mM ZnCl_2 for 48hours at 37゚C to allow for the enzymatic digestion of gelatin substrate.
Results
1.MMP-9,92 Kd protein, was found in the urine supecimens.
2.In the supernatant of the glomerular culture, MMP-9 activity was confirmed.
3.In patients with focal GN,MMP-9 was not observed, but was found in urine samples of the patients with diffuse proliferative GN.
4.The urinary MMP-9 level was correlated with the activity of the disease.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (5 results)

All Other

All Publications (5 results)

  • [Publications] Watanabe K et al.: "Gelatinase secretion by glomerular epithelial cells" Nephron. 86. 405-409 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Wong AP et al.: "Role of plasmin and gelatinase in extracellular matrix degradation by cultured rat mesangial cells" Am J Physiol. 263. F1112-F1118 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Sorbi D et al.: "Captopril inhibits the 72 kDa and 92 kDa matrix metalloproteinase" Kidney Int. 44. 1266-1272 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Schnaper HW et al.: "Balance between matrix synthesis and degradation : a determinat of glomerulosclerosis" Pediatr Nephrol. 9. 104-111 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Knowlden J et al.: "Metalloproteinase generation by human glomerular epithelial cells" Kidney Int. 47. 1682-1689 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary

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Published: 1995-04-01   Modified: 2016-04-21  

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