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The relationship between human semen characteristics and sperm apoptosis: a pilot study
Zuying Chen1, Russ Hauser, Alexander M Trbovich
1Department of Environmental Health, Occupational Health Program, Harvard School of Public Health, Building 1, Room 1405, 665 Huntington Ave, Boston, MA 02115, USA.
Journal of Andrology
|January 10, 2006
Summary
Sperm apoptosis, a marker of cell death, is inversely linked to sperm motility and morphology. Increased apoptosis correlates with more sperm tail defects, impacting overall semen quality.
Area of Science:
- Reproductive Biology
- Andrology
- Cellular Biology
Background:
- Apoptosis, or programmed cell death, plays a role in male fertility.
- Understanding the relationship between sperm apoptosis and semen quality is crucial for andrological assessments.
Purpose of the Study:
- To investigate the association between human semen characteristics and apoptosis in ejaculated sperm.
- To determine if sperm apoptosis levels correlate with key semen parameters like concentration, motility, and morphology.
Main Methods:
- Semen samples were collected from 23 male patients undergoing routine semen analysis.
- Sperm concentration, motility, and morphology were assessed using computer-assisted sperm analysis and Tygerberg strict criteria.
- Apoptosis was quantified using a DNA diffusion assay with YOYO-1 staining and fluorescent microscopy.
Main Results:
- The mean percentage of apoptosis in ejaculated sperm was 8.3%.
- A significant inverse association was observed between sperm apoptosis and sperm motility (P = .0025), progressive motility (P = .0051), and normal morphology (P = .0045).
- A positive relationship was found between sperm apoptosis and sperm tail defects (P = .0053).
Conclusions:
- The percentage of sperm apoptosis in ejaculated semen is significantly associated with several measures of semen quality.
- Elevated sperm apoptosis negatively impacts sperm motility, progressive motility, and morphology.
- Sperm apoptosis may serve as a valuable indicator in the assessment of male reproductive health.