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Related Experiment Videos

Regulation of corpus luteum function

M R Johnson1, A A Abbas, R Irvine

  • 1Department of Obstetrics and Gynaecology, Chelsea and Westminster Hospital, London, UK.

Human Reproduction (Oxford, England)
|January 1, 1994
PubMed
Summary

Clomiphene citrate and buserelin ovulation induction regimens impact pregnancy hormone levels differently. Clomiphene pregnancies showed higher corpus luteum hormones but lower human chorionic gonadotrophin (HCG) than spontaneous pregnancies.

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Area of Science:

  • Reproductive Endocrinology
  • Maternal-Fetal Medicine
  • Pharmacology

Background:

  • Ovulation induction is crucial for infertility treatment.
  • Different regimens may influence early pregnancy hormonal milieu.
  • Understanding these effects is vital for optimizing outcomes.

Purpose of the Study:

  • To compare the effects of clomiphene citrate and buserelin ovulation induction on first-trimester pregnancy hormone levels.
  • To investigate the impact on progesterone, oestradiol, relaxin, and human chorionic gonadotrophin (HCG).

Main Methods:

  • Studied circulating hormone concentrations in pregnancies achieved via clomiphene citrate or buserelin with HMG.
  • Compared hormone levels to spontaneous pregnancies during the first trimester.

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Main Results:

  • Clomiphene citrate led to higher progesterone, oestradiol, and relaxin, but lower HCG compared to spontaneous pregnancies.
  • Buserelin showed higher relaxin from 7 weeks gestation compared to spontaneous pregnancies.
  • Hormone profiles differed between clomiphene and buserelin pregnancies, with clomiphene showing higher oestradiol and relaxin.

Conclusions:

  • Ovulation induction regimens significantly alter the hormonal environment of early pregnancy.
  • Clomiphene citrate and buserelin have distinct effects on key pregnancy hormones.
  • These hormonal differences may have implications for pregnancy development and outcomes.