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RAD51 and Infertility: A Review and Case-Control Study
Jatinder Singh Sahota1, Ranveer Singh Thakur1, Kamlesh Guleria1
1Cytogenetics Laboratory, Department of Human Genetics, Guru Nanak Dev University (GNDU), Amritsar, 143005, Punjab, India.
Biochemical Genetics
|August 10, 2023
Summary
The RAD51 recombinase is crucial for DNA repair and fertility. A study found no link between the RAD51 135 G>C gene variant and infertility in North-West Indians, suggesting it does not impact male or female reproductive health.
Area of Science:
- Genetics and Reproductive Biology
- DNA Repair Mechanisms
- Human Fertility Studies
Background:
- RAD51 recombinase is essential for homologous recombination repair and has been linked to cancer and fertility.
- While RAD51's role in animal fertility is established, its impact on human reproduction requires further investigation.
- Existing literature suggests RAD51 involvement in infertility pathogenesis, necessitating genetic association studies.
Approach:
- A comprehensive literature review of RAD51's reproductive role was conducted, analyzing 59 articles.
- A case-control study screened the RAD51 135 G>C polymorphism in 201 infertile individuals and 201 healthy controls from North-West India using PCR-RFLP.
- Genotypic and allelic frequencies were analyzed, including segregation by infertility type (primary/secondary).
Key Points:
- RAD51 is indispensable for spermatogenesis and oogenesis in animal models.
- Limited reports exist on RAD51's role in human fertility, but it is implicated in infertility pathogenesis.
- No statistically significant difference in RAD51 135 G>C polymorphism frequencies was observed between infertile cases and controls.
Conclusions:
- The RAD51 135 G>C polymorphism is not associated with male or female infertility in the studied North-West Indian population.
- This study provides the first report on the association between RAD51 135 G>C polymorphism and infertility.
- Further research may explore other RAD51 variants or interacting proteins in relation to human infertility.
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