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Studies on the Expression and the Regulation of Activin in Human Pituitary and Pituitary Adenoma Tissues.

Research Project

Project/Area Number 05670882
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 内分泌・代謝学
Research InstitutionTokyo Women's Medical College

Principal Investigator

DEMURA Reiko  Tokyo Women's Medical College, Professor, 医学部, 教授 (10075278)

Co-Investigator(Kenkyū-buntansha) KUBO Osami  Tokyo Women's Medical College, Assistant Professor, 医学部, 助教授 (10075690)
Project Period (FY) 1993 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 1995: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1994: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1993: ¥1,000,000 (Direct Cost: ¥1,000,000)
KeywordsActivin / Inhibin / mRNA / PT-PCR / Immunohistochemistry / 下垂体腺腫 / Inhibin / Activin / アクチビンレセプター / PCR / 脳腫瘍 / アクチビン リセプター
Research Abstract

Activins have been known to modulate various pituitary hormone secretion. To study the localization and the regulation of activins in human pituitary, we studied the expression of inhibin alpha, beta_A, beta_B subunit mRNAs and activin type II receptor mRNA in various human pituitary tissues. We found that inhibin alpha and beta_A subunits and activin type II receptor mRNAs were expressed, with the ubiquitous presence of beta_A subunit mRNA in all human pituitary adenoma tissues, regardless of their hormone production. We further measured individual mRNA levels by a quantitative RT-PCR.The inhibin alpha subunit mRNA levels were undetectably low in all 9 cultured adenoma tissues, but beta_A mRNA levels were 0.3830<plus-minus>0.071 in 3 GH adenomas, 0.672<plus-minus>0.140 in 3 prolactinomas and 0.957<plus-minus>0.414 molecules/cell in 3 non-functioning adenomas.The addition of 10^<-8>M activin A decreased the beta_A mRNA level within 4 hours in 5 out of 9 adenomas, though the decreases were not statistically significant. Furthermore, activinimmunoreactivities were demonstrated in the cytoplasm of some of the adenomas, while inhibin alpha subunit immunoreactivity was negative in all of the tissues studied. The data demonstrated a local synthesis of activin in pituitary adenoma tissues in preference to inhibin and its local role in human pituitary adenoma tissues.

Report

(4 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • 1993 Annual Research Report
  • Research Products

    (26 results)

All Other

All Publications (26 results)

  • [Publications] Reiko Demura.: "Competitive protein binding assay for activin/EDF using follistatin: Determination of activin levels in human plasma." Biochem Biophys. Res. Commun.185. 1148-1154 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Reiko Demura: "Human plasma free activin and inhibin levels during the menstrual cycle." JCE&M.76(4). 1080-1083 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Reiko Demura: "Activin and inhibin secretion by cultured porcine granulosa cells is stimulated by FSH and LH." Endocrine Journal.40(4). 447-451 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Reiko Demura: "Inhibin α,β_A subnit and activin type II receptor mRNAs are expressed in human an brain tumors." Endocrine Journal.42(3). 307-313 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Reiko Demura: "Expression of inhibin α,and β_A subunit and activin type II receptor mRNAs in various human pituitary adenomas." Endocrine Journal.42(1). 95-100 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Reiko Demura: "Demonstration of activin in normal pituitary and in various human pituitary adenoma by immunohistochemistry." Endocrine Journal.(accepted).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Tomoharu Suzuki: "Inhibin α and β_A subunit messenger ribonucleic acids expression in human pituitary adenomas. Studies by quantitative reverse transcription-polymerase chain reaction." Endocrine Journal.(accepted).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Reiko Demura: "Inhivin α ,β_A and β_B subunit messenger ribonucleic acid levels in cultured rat pituitary. Studies by quantitative RT-PCR." Endocrine Journal.(submitted).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Reiko Demaru: "Competitive protein binding assey for activin/EDF using follistatin : Determination of activin levels in human plasma." Biochem Biophys.Res.Commun.185. 1148-1154 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Reiko Demaru: "Human plasma free activin and inhibin levels during the menstrual cycle." JCE & M. 76 (4). 1080-1083 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Reiko Demaru: "Activin and inhibin secretion by cultured porcine granulosa cells is stimulated by FSH and LH." Endocrine Journal. 40 (4). 447-451 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Reiko Demaru: "Inhibin alpha, and beta_A subunit and activin type II receptor mRNAs are expressed in human brain tumors." Endrocrine Journal. 42 (3). 303-313 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Reiko Demaru: "Expression of inhibin alpha, and beta_A subunit and activin type II receptor mRNAs in various human pituitary adenomas." Endocrine Journal. 42 (1). 95-100 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Reiko Demaru: "Demonstration of activin in normal pituitary and in various human pituitary adenoma by immunohistochemistry" Endocrine Journal. (accepted).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Tomoharu Suzuki: "Inhibin alpha, and beta_A subunit messenger ribonucleic acids expression in human pituitary adenomas.Studies by quantitative reverse transcription-polymerase chain reaction." Endocrine Journal. (accepted).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Reiko Demaru: "Inhibin alpha, and beta_A beta_A subunit messenger ribonucleic acid levels in cultured rat pituitary. Studies by a quantitative RT-PCR." Endocrine Journal. (Submitted).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T. Suzuki R. Demura et al.: "Inhibin α and β A subunit messenger ribonucleic acids expression in human pituitary adenomas. Studies by quantitative reverse transcription-polymerase chaim reaction" Endocrine Journal. (accepted).

    • Related Report
      1995 Annual Research Report
  • [Publications] R. Demura: "Demonstration of activin in normal pituitary and in various human pituitary adenoma by immunohistochemistry" Endocrine Journal. (accepted).

    • Related Report
      1995 Annual Research Report
  • [Publications] R. Demura: "Expression of inhibin α, and β A subunit and activin type II erceptor mRNAs in various human pituitary adenomas" Endocrine Journal. 42(1). 95-100 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] R. Demura: "Inhibin α, β A subunit and activin type II receptor mRNAs are expressed in human brain tumors." Endocrine Journal. 42(3). 307-313 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] R.Demura et al: "Expression of inhibin α,and β_A subunit and activin type II receptor mRNAS in various human pituitary adenomas" Endocrine J. 42. 95-100 (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] R.Demura et al: "Inhibin α,β_A subunit and activin type II receptor mRNAs are expressed in human brain tumors." Endocrine J. 42. (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] 出村黎子 他: "下垂体研究の進歩" 日本臨牀. 51. 2716-2720 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 田島佐栄子,出村黎子 他: "ヒト下垂体腫瘍におけるインヒビン/アクチビンbeta_AサブユニットのmRANの発現について" 日本内分泌学会雑誌. 69. 263- (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 田島佐栄子,出村黎子 他: "ヒト下垂体腫瘍におけるインヒビン/アクチビンbeta_Aサブユニット・アクチビンタイプIIレセプターmRAN発現について" 日本内分泌学会雑誌. 69. 718- (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 出村黎子 他: "ストレスと性腺機能障害" メジカルビュー社「ストレスとホルモン」, 8 (1993)

    • Related Report
      1993 Annual Research Report

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Published: 1993-04-01   Modified: 2016-04-21  

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