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Chromosomal disorders and male infertility
Gary L Harton1, Helen G Tempest
1Reprogenetics, Livingston, NJ 07039, USA.
Asian Journal of Andrology
|November 29, 2011
Summary
Genetic factors, particularly chromosomal abnormalities like aneuploidy and Y chromosomal microdeletions, significantly impact male infertility. Understanding these genetic causes is crucial for reproductive health and developing diagnostic tools.
Area of Science:
- Reproductive biology
- Human genetics
- Medical science
Background:
- Infertility affects 15% of couples trying to conceive.
- Molecular and genetic causes of infertility are increasingly being identified.
- Chromosomal abnormalities are a significant, though often overlooked, factor in male infertility.
Purpose of the Study:
- To review the current understanding of the chromosomal basis of male infertility.
- To discuss chromosomal aneuploidy, karyotype abnormalities, and Y chromosomal microdeletions in infertile males.
- To explore the link between sperm aneuploidy, embryo aneuploidy, and the role of preimplantation genetic diagnosis (PGD).
Main Methods:
- Literature review focusing on chromosomal abnormalities in male infertility.
- Analysis of existing data on sperm aneuploidy in fertile versus infertile men.
- Examination of the application and emerging technologies in preimplantation genetic diagnosis (PGD).
Main Results:
- Infertile men exhibit higher rates of sperm aneuploidy compared to fertile men.
- Numerical and structural karyotype abnormalities increase the risk of producing aneuploid sperm.
- The review highlights the translation of sperm aneuploidy to embryo aneuploidy.
Conclusions:
- Chromosomal factors are a key, yet under-recognized, cause of male infertility.
- Preimplantation genetic diagnosis (PGD), including advanced array technologies, shows promise in managing male infertility cases.
- Further research and clinical recommendations are needed to address the genetic basis of male infertility.
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