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Study on Early Pregnancy Factor

Research Project

Project/Area Number 60570794
Research Category

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

Allocation TypeSingle-year Grants
Research Field Obstetrics and gynecology
Research InstitutionKeio University

Principal Investigator

MORISADA Masaru  Keio University, School of Medicine, Dept. of Ob/Gyn., 医学部・産婦人科学教室, 講師 (40051552)

Co-Investigator(Kenkyū-buntansha) ITOH Kimihiko  Keio University, School of Medicine, Dept. of Ob/Gyn., 医学部・産婦人科学教室, 助手 (50168340)
SUEOKA Kou  Keio University, School of Medicine, Dept. of Ob/Gyn., 医学部・産婦人科学教室, 助手 (90162833)
NATORI Michiya  Keio University, School of Medicine, Dept. of Ob/Gyn., 医学部・産婦人科学教室, 講師 (80101913)
TADAKUMA Takushi  Keio University, School of Medicine, Dept. of Bacteriology, 医学部・微生物学教室, 助教授 (30051626)
宮崎 豊彦  慶應義塾大学, 医学部・産婦人科学教室, 助手
Project Period (FY) 1985 – 1987
Project Status Completed (Fiscal Year 1987)
Budget Amount *help
¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1987: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1986: ¥400,000 (Direct Cost: ¥400,000)
KeywordsEarly pregnancy factor / Purification / Column / Artificial insemination / 人工授精 / 体外受精・胚移植 / Early Pregnancy Factor / Rosette inhibition test / Chromatography
Research Abstract

Early Pregnancy Factor (EPF) is a pregnancy association factor which appears in maternal blood in the early period after fertilization. We established the EPF assay system with higher stability on a smaller scale using the 96 well microplate.
Isolation of EPF activity was carried out using crude hCG as a sourse. The activity of EPF was detected in a dose dependent mannor for biochemical analysis and considerations. Two peaks of protein were seen at 20KD and 40KD by Sephdex G-75 column. The protein that showed a peak at 40KD demonstrated both EPF and hCG activities. Using DE-52 column, EPF was isolated from its contaminated fractions of hCG. Gelpermiation chromatography and SDS-PAGE could not demonstrate the specific EPF proteinband and peak from the fraction of DE-52. Reversephase HPLC analysis showed eight peaks which included specific two peaks and the other two peaks, of which proteindose increased with EPF activity. The four peaks were determined using anamino acid analysis as an independent peptides. Fast protein liquid chromatography including anion, cation and chromatofocusing was used to isolate several EPF peaks in each of the column, the chromatofocusing showed P16,5 in the highest EPF activity fraction.

Report

(2 results)
  • 1987 Final Research Report Summary
  • 1986 Annual Research Report
  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] 末岡浩: 日本不妊学会誌. 30. 403-410 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 末岡浩: 臨床婦人科産科. 40. 106-107 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 伊藤仁彦: 産婦人科の世界. 39. 311-317 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 飯塚理八: 産婦人科の実際. 36. 581-588 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Kou SUEOKA: J.Fertil.Reprod.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 末岡浩: "受精・着床'85" 学会誌刊行センター, 279 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Kimuhiko ITOH: "Japan Society for Medical Reproductive Immunology 1986 Proceeding of the 1st Annual Meeting" S.TAKEUCHI, 154 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Kou SUEOKA: "Study on Early Pregnancy Factor; Concerning on Human in vitro Fertilization and Embryo Transfer" Jap.J.Fertil.Steril.30. 403-410 (1985)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Kimihiko ITOH: "Early Pregnancy Factor" The World of Obstetrics and Gynecology. 39. 311-317 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Rihachi IIZUKA: "Early Pregnancy Factor" Obstetrical and Gynecological Practice. 36. 581-588 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Kou SUEOKA: "Detection of early pregnancy factor (EPF) using the rabbit ovary and oviduct perfused in vitro" J.Fertil.Reprod.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Kimihiko ITOH: Japan Society for Medical Reproductive Immunology 1986 Proceeding of the 1st Annual Meeting. S.TAKEUCHI, 154 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 末岡浩: 臨床婦人科産科. 40. 223-225 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] 末岡浩: 産婦人科の世界. 38. 737-743 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] 伊藤仁彦: 産婦人科の世界.

    • Related Report
      1986 Annual Research Report
  • [Publications] 伊藤仁彦: 第1回日本医学生殖免疫学会 Proceeding.

    • Related Report
      1986 Annual Research Report

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Published: 1987-03-31   Modified: 2016-04-21  

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