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Effects of cytokines on the pathogenesis of endometriosis and infertility associated with endometriosis

Research Project

Project/Area Number 11470350
Research Category

Grant-in-Aid for Scientific Research (B).

Allocation TypeSingle-year Grants
Section一般
Research Field Obstetrics and gynecology
Research InstitutionTottori University School of Medicine

Principal Investigator

TERAKAWA Naoki  Tottori Univ.Dept.Obstet.Gynecol., Professor, 医学部, 教授 (90163906)

Co-Investigator(Kenkyū-buntansha) YOSHIDA Souichi  Tottori Univ.Dept.Obstet.Gynecol., Research Associates, 医学部・附属病院, 助手 (70304219)
IWABE Tomio  Tottori Univ.Dept.Obstet.Gynecol., Research Associates, 医学部, 助手 (10284001)
HARADA Tasuku  Tottori Univ.Dept.Obstet.Gynecol., Assistant Professor, 医学部, 講師 (40218649)
Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥6,600,000 (Direct Cost: ¥6,600,000)
Fiscal Year 2000: ¥2,800,000 (Direct Cost: ¥2,800,000)
Fiscal Year 1999: ¥3,800,000 (Direct Cost: ¥3,800,000)
KeywordsEndometriosis / Pathogenesis / Infertility / Endometriotic stromal cells / Peritoneal macrophages / Cytokines / IL-6 / IL-8 / 増殖・進展 / TNFα / 間質細胞 / TNF-α
Research Abstract

Endometriosis, which occurs in 10% of reproductive aged women, is characterized by the presence and growth of endometrial-like tissue outside the uterus. The pathogenesis of endometriosis and its link to infertility is controversial. Peritoneal fluid in women with endometriosis contains an increased number of activated macrophages that secrete a variety of cytokines, including interleukin (IL)-6, IL-8 and tumor necrosis factor-α (TNFα). The purpose of this study is to investigate whether IL-6, IL-8 and TNFα are related to progress and infertility of this disease.
Peritoneal fluid levels of IL-6, IL-8 and TNFα were significantly higher in patients with endometriosis compared with patients without endometriosis. The concentrations of these cytokines in patients with active endometriosis increased as the size and number of active lesions increased. Expressions of transcripts of IL-6 receptor, glycoprotein 130, IL-8 receptor and TNFα receptor were observed in both endometrial and endometrio … More tic stromal cells.
Tumor necrosis factor-α increased the expression of IL-6 messenger RNA and protein in endometriotic cells in a dose-dependent manner. The addition of IL-6 inhibited the development of mouse 1-cell embryo to blastocyst in vitro. The percentage of motile spermatoza decreased by the addition of both IL-6 and soluble IL-6 receptor. These results suggested that IL-6 may relate to the infertility associated with endometriosis.
Interleukin-6 had no effect on the growth of stromal cells in endometrial tissue from the proliferative phase. In contrast, the addition of IL-6 induced significant inhibition of stromal cells in tissue from the secretary phase. On the other hand, stromal cells of endometriotic tissues were resistant to IL-6, showing no inhibitory response. Interleukin-8 significantly increased the number of cells and DNA synthesis in the endometriotic stromal cells in a dose-dependent manner. Tumor necrosis factor-α induced the gene and protein expression of IL-8 in endometriotic stromal cells in a dose-dependent fashion. The addition of TNF α promoted the proliferation of the endometriotic stromal cells, and the stimulatory effects of TNF α were abolished by the adding anti-IL-8 antibody. These cytokines may associate with the progression of the disease.
In conclusion, IL-6, IL-8 and TNF α may contribute to the pathogenesis of endometriosis and infertility associated with endometriosis. Less

Report

(3 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • Research Products

    (11 results)

All Other

All Publications (11 results)

  • [Publications] 寺川直樹: "子宮内膜症とサイトカイン"日本産科婦人科学会雑誌. 52 8. 1202-1207 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Harada: "The role of cytokines in endometriosis."Fertil.Steril.. (in press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] H.Yoshioka, T.Harada, T.Iwabe, Y.Nagano, F.Taniguchi, M.Tanikawa, N.Terakawa: "Menstrual cycle-specific inhibition of the proliferation of endometrial stromal cells by interleukin 6 and its soluble receptor."Am J Obstet Gynecol. 180(5). 1088-1094 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Tsudo, T.Harada, T.Iwabe, M.Tanikawa, Y.Nagano, M.Ito, F.Taniguchi, N.Terakawa: "Altered gene expression and secretion of interleukin-6 in stromal cells derived from endometriotic tissues."Fertil Steril. 73(2). 205-211 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Iwabe, T.Harada, T.Tsudo, Y.Nagano, S.Yoshida, M.Tanikawa, N.Terakawa: "Tumor necrosis factor-α promotes proliferation of endometriotic stromal cells by inducing interleukin-8 gene and protein expression."J Clin Endocrinol Metab. 85(2). 824-829 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Harada, T.Iwabe, N.Terakawa: "Role of cytokines in progression of endometriosis."Fertil Steril. in press.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 寺川直樹: "子宮内膜症とサイトカイン"日本産科婦人科学会雑誌. 52・8. 1202-1207 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] T.Harada: "The role of cytokines in endometriosis."Fertil.Steril.. (in press).

    • Related Report
      2000 Annual Research Report
  • [Publications] H.Yoshioka: "Menstrual cycle-specific inhibition of the proliferation of endometrial stromal cells by interleukin 6 and its solube receptor"Am.J.Obstet.Ginecol.. 188・5. 1088-1094 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T.Tsudo: "Altered gene expression and secretion of interleukin-6 in stromal cells derived from endometriotic tissues"Fertil.Steril.. 73・2. 205-211 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] T.Iwabe: "Tumor necrosis factor-α promotes proliferation of endometriotic stromal cells by inducing interleukin-8 gene and protein expression"J.Cline.Endocrinol.Metab.. 85・2. 824-829 (2000)

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2016-04-21  

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