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Chromosomal abnormalities in couples with reproductive disorders.
Juan Pablo Meza-Espinoza1, Lilia Ortiz Anguiano, Horacio Rivera
1Unidad Academica de Ciencias de la Salud y Tecnologia, Universidad Autonoma de Tamaulipas, Matamoros, Mexico. sirol1073@yahoo.com.mx
Gynecologic and Obstetric Investigation
|July 23, 2008
Summary
Chromosomal abnormalities affect 5.5% of couples with reproductive issues, including recurrent fetal loss, stillbirths, and sterility. These genetic variations, often structural rearrangements, impact fertility and pregnancy outcomes.
Area of Science:
- Human Genetics
- Reproductive Medicine
- Cytogenetics
Background:
- Reproductive disorders in couples can stem from various factors, including underlying genetic conditions.
- Chromosomal abnormalities are a known contributor to infertility and recurrent pregnancy loss.
Purpose of the Study:
- To investigate the prevalence of chromosomal abnormalities in Mexican couples experiencing reproductive challenges.
- To identify specific types of chromosomal aberrations associated with different reproductive disorders.
Main Methods:
- A retrospective analysis of karyotype data from 939 Mexican couples with reproductive disorders.
- GTG-banding technique was used for karyotype analysis of metaphase chromosomes.
Main Results:
- A 5.5% prevalence of chromosomal abnormalities was found in couples, with higher rates in sterility (14.6%) compared to recurrent fetal loss (5.7%) and malformed/stillborn children (4.2%).
- Structural rearrangements, primarily reciprocal and Robertsonian translocations, were the most common abnormalities. Gonosomal aneuploidies were also observed.
- The affected partner was female in 53.8% and male in 46.2% of cases. Inversion 9qh was noted in 1.8% of couples.
Conclusions:
- The prevalence of chromosomal abnormalities in couples with reproductive disorders in this Mexican population aligns with global findings.
- Karyotype analysis is crucial for identifying genetic causes of reproductive failure and informing genetic counseling.
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