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Related Concept Videos

Oogenesis02:07

Oogenesis

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In human women, oogenesis produces one mature egg cell or ovum for every precursor cell that enters meiosis. This process differs in two unique ways from the equivalent procedure of spermatogenesis in males. First, meiotic divisions during oogenesis are asymmetric, meaning that a large oocyte (containing most of the cytoplasm) and minor polar body are produced as a result of meiosis I, and again following meiosis II. Since only oocytes will go on to form embryos if fertilized, this unequal...
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In vitro fertilization (IVF) is a form of assisted reproductive technology where an egg is fertilized with sperm in a controlled laboratory environment before transferring the resulting embryo into the uterus. This process is designed to help individuals and couples experiencing difficulties conceiving.
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Female infertility is defined as the inability to conceive after a year of regular, unprotected intercourse and affects about 10–15% of couples worldwide. The primary cause of female infertility is ovulatory disorders, which hinder the release of eggs. These disorders can be classified as hypothalamic amenorrhea, polycystic ovarian syndrome (PCOS), premature ovarian failure, and hyperprolactinemic anovulation disorders.
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Related Experiment Video

Updated: Jan 2, 2026

Fertility Preservation Through Oocyte Vitrification: Clinical and Laboratory Perspectives
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Fertility Preservation Through Oocyte Vitrification: Clinical and Laboratory Perspectives

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Female aging and superovulation induction for IVF

S H Kim1

  • 1Department of Obstetrics and Gynecology, College of Medicine, Korea University, Seoul, Korea.

Journal of Obstetrics and Gynaecology (Tokyo, Japan)
|February 1, 1995
PubMed
Summary

Female age significantly impacts in vitro fertilization (IVF) success due to diminished ovarian response. Understanding ovarian reserve is crucial for older women seeking assisted reproduction to guide timely treatment decisions.

Area of Science:

  • Reproductive Endocrinology
  • Assisted Reproductive Technologies

Background:

  • Increasing female age is linked to reduced in vitro fertilization (IVF) success rates.
  • Older women often exhibit poorer ovarian response to stimulation, a key factor in IVF outcomes.

Purpose of the Study:

  • To assess the relationship between ovarian response to gonadotropin stimulation and IVF success rates in older women.
  • To provide information for counseling older women with diminished ovarian reserve regarding assisted reproduction options.

Main Methods:

  • Analysis of 746 in vitro fertilization (IVF) cycles.
  • Evaluation of ovarian response to gonadotropin stimulation.
  • Review of current methods for assessing ovarian reserve.

Main Results:

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Related Experiment Videos

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  • Presents data on ovarian response and success rates in 746 IVF cycles.
  • Highlights the importance of ovarian responsiveness in predicting IVF outcomes for older women.
  • Discusses the efficacy of various stimulation protocols for women with limited ovarian reserve.

Conclusions:

  • Ovarian response variability significantly influences IVF success in older women.
  • Accurate assessment of ovarian reserve is vital for appropriate patient counseling and management.
  • Timely consideration of alternative therapeutic options is recommended for women with poor ovarian reserve.