• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Studies on epitopes of glutamic acid decarboxylase 65 (GAD65) antibodies in type 1 diabetes

Research Project

Project/Area Number 13671208
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Metabolomics
Research InstitutionUniversity of Yamanashi Faculty of Medicine

Principal Investigator

KOBAYASHI Tetsuro  University of Yamanashi, Faculty of Medicine, Professor, 医学部, 教授 (30113442)

Co-Investigator(Kenkyū-buntansha) 中西 幸二  沖中記念成人病研究所, 研究員 (80211423)
Project Period (FY) 2001 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2002: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 2001: ¥2,000,000 (Direct Cost: ¥2,000,000)
Keywordsglutamic acid decarboxylase (GAD) / GAD antibody / type 1 diabetes / type 2 diabetes / HLA / epitope / epitope spreading / SPIDDM
Research Abstract

Disease-specific epitope profiles of glutamic acid decarboxylase (GAD) 65 autoantibodies (GAD65Ab) were studied in slowly progressive type 1 (insulin-dependent) diabetes mellitus (SPIDDM) and acute onset type 1 (insulin-dependent) diabetes mellitus (AIDDM) using seven kinds of GAD65/67 chimeric molecules. Sera obtained from Japanese SPIDDM (n = 17) and AIDDM (n = 46) patients followed prospectively were analyzed by immunoprecipitation, ELISA and western blotting.
GAD65Ab in all SPIDDM samples reacted specifically with an N-terminal linear epitope located on the membrane anchoring domain between amino acids 17-51 and C-terminal conformational epitope between amino acids 443-585 of GAD65. The binding of GAD65Ab with N-terminal 83 residues in SPIDDM inversely correlated with the period in which insulin was not required. GAD65Ab in AIDDM did not react with N-terminal epitope located between amino acids 1-83 irrespective of the titer of GAD65Ab. A novel epitope of GAD65Ab in AIDDM resided between amino acids 244-360 was identified in 17% (8/46) of patients whose age of onset was younger than other AIDDM patients.
In conclusion, GADAb in SPIDDM has unique N-terminal linear epitopes that are located on the anchoring domain of GAD65 molecules. Association is suggested between GAD65Ab targeted to this region and slowly progressive β-cell failure in SPIDDM.

Report

(3 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] Shoichiro Tanaka, et al.: "Association of Human Leukocyte Antigen-DQ Genotype in Autoantibodies-Negative and Rapid Onset Type 1 Diabetes Mellitus"Diabetes Care. 25. 2302-2307 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Mikito Hayakawa, et al.: "A Patient With Apolipoprotein E2 Variant (Q187E) Without Lipoprotein Glomerulopathy"American Journal of Kidney Diseases. 39(3). E15 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Shoichiro Tanaka, et al.: "Corticosteroid-Responsive Diabetes Mellitus Associated with Autoimmune Pancreatitis"Ann NY Acad Sci. 958. 152-159 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Tetsuro Kobayashi, et al.: "Insulin Intervention to Preserve β Cells in Slowly Progressive Insulin-Dependent(Type 1)Diabetes Mellitus"Ann NY Acid Sci. 958. 117-130 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Tetsuro Kobayashi, et al.: "Evidence of primary β-cell destruction by T-cells and β-cell differentiation from pancreatic ductal cells in diabetes associated with active autoimmune chronic pancreatitis"Diabetes Care. 24(9). 1661-1667 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Shoichiro Tanaka, et al:: "Association of Human Leukocyte Antigen-DQ Genotype in Autoantibodies-Negative and Rapid Onset Type 1 Diabetes Mellitus"Diabetes Care. 25. 2302-2307 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Mikito Hayakawa, et al:: "A Patient With ApolipoproteinE2 Variant (Q187E) Without Lipoprotein Glomerulopathy"American Journal of Kidney Diseases. 39(3). E15 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Shoichiro Tanaka, et al:: "Corticosteroid- Responsive Diabetes Mellitus Associated with Autoimmune Pancreatitis"Ann NY Acad Sci. 958. 152-159 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Tetsuro Kobayashi, et al.:: "Insulin Intervention to Preserve β Cells in Slowly Progressive Insulin-Dependent (Type 1) Diabetes Mellitus"Ann NY Acad Sci. 958. 117-130 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Tetsuro Kobayashi, et al.:: "Evidence of primary β-cell destruction by T-cells and β-cell differentiation from pancreatic ductal cells in diabetes associated with active autoimmune chronic pancreatitis"Diabetes Care. 24(9). 1661-1667 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Shoichiro Tanaka, et al.: "Association of Human Leukocyte Antigen-DQ Genotype in Autoantibodies-Negative and Rapid Onset Type 1 Diabetes Mellitus"Diabetes Care. 25. 2302-2307 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Mikito Hayakawa, et al.: "A Patient With Apolipoprotein E2 Variant (Q187E) Without Lipoprotein Glomerulopathy"American Journal of Kidney Diseases. 39(3). E15 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Shoichiro Tanaka, et al.: "Corticosteroid-Responsive Diabetes Mellitus Associated with Autoimmune Pancreatitis"Ann NY Acad Sci. 958. 152-159 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Tetsuro Kobayashi, et al.: "Insulin Intervention to Preserve β Cells in Slowly Progressive insulin-Dependent (Type 1)Diabetes Mellitus"Ann NY Acad Sci. 958. 117-130 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Tetsuro Kobayashi, et al.: "Evidence of primary β -cell destruction by T-cells and β -cell differentitation from pancreatic ductal cells in diabetes associated with active autoimmune chronic pancreatitis"Diabetes Care. 24(9). 1661-1667 (2001)

    • Related Report
      2002 Annual Research Report
  • [Publications] Kobayashi T., Taro Maruyama, Akira Shimada, et al.: "Insulin Intervention to Preserveβ Cells in Slowly Progressive Insulin-Dependent(Type1)Diabetes Mellitus^a"Ann NY Acad Sci. (In press). (2002)

    • Related Report
      2001 Annual Research Report

URL: 

Published: 2001-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi