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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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The menstrual cycle includes a critical component known as the ovarian cycle, which undergoes two main phases each month—the follicular phase and the luteal phase. The follicular phase is variable and averaging around 14 days. Ovulation, triggered by a surge in luteinizing hormone (LH), marks the transition between the two phases. The second phase, the luteal phase, is relatively consistent, lasting approximately 14 days, and is marked by the activity of the corpus luteum. While a cycle...
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Related Experiment Video

Updated: Apr 6, 2026

Author Spotlight: Investigating the Mechanisms and Inducing Models of Polycystic Ovary Syndrome
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Ovarian Drilling in PCOS: Is it Really Useful?

Issam Lebbi1, Riadh Ben Temime2, Anis Fadhlaoui3

  • 1Ob-Gyn and Fertility Private Clinic, Dream Center , Tunis , Tunisia.

Frontiers in Surgery
|August 4, 2015
PubMed
Summary

Polycystic ovary syndrome (PCOS) causes infertility in 5-10% of women. Laparoscopic ovarian drilling is a surgical option to induce ovulation before using gonadotropins, improving conception rates.

Keywords:
anovulationlaparoscopic drillingovarian drillingovarian infertilitypolycystic ovary syndrome

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Area of Science:

  • Reproductive endocrinology
  • Gynecological surgery

Background:

  • Polycystic ovary syndrome (PCOS) affects 5-10% of infertile women, frequently causing anovulation.
  • Anovulation accounts for over 80% of PCOS-related infertility cases.
  • Inducing mono-ovulatory cycles is the primary treatment objective for PCOS infertility.

Purpose of the Study:

  • To outline a pragmatic management strategy for infertility in women with PCOS.
  • To discuss the role of laparoscopic ovarian drilling as a surgical intervention.

Main Methods:

  • Review of first-line treatments including weight loss and clomiphene citrate (CC).
  • Evaluation of gonadotropin therapy and associated risks (ovarian hyper-stimulation, multiple pregnancies).
  • Assessment of laparoscopic ovarian drilling as a precursor to gonadotropin therapy.

Main Results:

  • Weight loss and CC are primary treatments for PCOS infertility.
  • Gonadotropins carry significant risks of hyper-stimulation and multiple pregnancies.
  • Laparoscopic ovarian drilling can facilitate normal ovulatory cycles, optimizing subsequent treatment.

Conclusions:

  • Most PCOS patients can achieve conception with pragmatic infertility management.
  • Laparoscopic ovarian drilling offers an alternative to reduce risks associated with gonadotropins.
  • Surgical intervention may improve ovulatory function and pregnancy outcomes in PCOS.