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Y chromosome microdeletions in idiopathic infertile men from West Azarbaijan

Mir Davood Omrani1, Saied Samadzadae, Mortaza Bagheri

  • 1Department of Genetics, Urmia University of Medical Sciences, Urmia, Iran. davood_omrani@umsu.ac.ir

Urology Journal
|June 26, 2007
PubMed
Abstract

Insights

Y chromosome microdeletions are common in men with idiopathic azoospermia or severe oligospermia. Screening for these deletions is crucial before intracytoplasmic sperm injection to improve assisted reproduction outcomes.

Area of Science:

  • Human Genetics
  • Reproductive Medicine
  • Molecular Biology

Background:

  • Intracytoplasmic sperm injection (ICSI) is a widely used assisted reproduction technique.
  • Screening for Y chromosome microdeletions is often overlooked in Iran before ICSI.
  • This study investigates Y chromosome microdeletions in infertile men.

Purpose of the Study:

  • To determine the frequency of Y chromosome microdeletions in Iranian men with idiopathic azoospermia or severe oligospermia.
  • To assess the clinical relevance of Y chromosome microdeletion screening in candidates for ICSI.

Main Methods:

  • Analyzed 99 infertile men and 100 healthy controls.
  • Used sequence-tagged site (STS) primers for Y chromosome microdeletion loci, including azoospermia factor (AZF) regions, deleted in azoospermia (DAZ), and sex-determining region on Y chromosome (SRY) genes.
  • Assessed hormone levels (FSH, LH, testosterone) in patients.

Main Results:

  • 24.2% of infertile patients had Y chromosome microdeletions.
  • The AZFc region, containing the DAZ gene, was the most commonly deleted region (87.5%).
  • Deletions in AZFb (29.2%) and proximal AZF regions (16.7%) were also observed, but not in AZFa or SRY genes.

Conclusions:

  • Y chromosome microdeletions are prevalent in men with idiopathic azoospermia or severe oligospermia.
  • Routine screening for Y chromosome microdeletions is recommended for these patients prior to ICSI.
  • This screening can aid in genetic counseling and reproductive decision-making.

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