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Cytogenetic studies in motile sperm from normal men
J Benet1, A Genescà, J Navarro
1Department de Biologia Cel.lular i Fisiologia, Facultat de Medicina, Universitat Autònoma de Barcelona, Spain.
Human Genetics
|May 1, 1992
Summary
This study analyzed chromosomal abnormalities in highly motile human sperm using a swim-up method. Results showed that selecting motile sperm did not alter the frequency of chromosomal abnormalities or the sex ratio compared to unselected samples.
Area of Science:
- Reproductive biology
- Human genetics
- Cytogenetics
Background:
- Previous studies on human sperm chromosomes utilized unselected sperm for heterologous fertilization.
- Assessing chromosomal integrity in selected sperm populations is crucial for understanding reproductive health.
Purpose of the Study:
- To investigate the chromosomal status of highly motile human sperm selected via the swim-up method.
- To determine if sperm motility selection influences chromosomal abnormality rates or sex ratio.
Main Methods:
- Cytogenetic analysis of 505 highly motile human sperm complements from three normal donors.
- Sperm selection performed using the swim-up technique.
- Analysis of structural aberrations and aneuploidy in sperm chromosomes.
Main Results:
- The overall frequency of chromosomal abnormalities in selected motile sperm was 10.9% (6.9% structural aberrations, 4.0% aneuploidy).
- The sex ratio observed was 50.4% X and 49.6% Y chromosomes.
- These findings were comparable to those reported for unselected semen samples.
Conclusions:
- Sperm motility selection using the swim-up method does not appear to introduce chromosomal selection bias.
- The chromosomal integrity and sex ratio of motile sperm reflect those of the general sperm population.