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Semen characteristics and infertility in aging.
J H Check1, B Shanis, A Bollendorf
1Department of Obstetrics and Gynecology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania.
Archives of Andrology
|January 1, 1989
Summary
Male fertility potential shows minimal age-related decline. While some semen parameters like hyposmotic swelling test (HOS) scores and velocity differed in men over 50, most sperm characteristics remained similar, indicating no definitive age-related fertility loss in this study.
Area of Science:
- Reproductive Medicine
- Andrology
- Human Fertility Studies
Background:
- Male infertility is a significant concern, with age being a potential contributing factor.
- Understanding how aging affects sperm parameters is crucial for reproductive health assessments.
Purpose of the Study:
- To investigate the relationship between advanced paternal age and semen quality in infertile men.
- To determine if specific semen parameters decline significantly with age.
Main Methods:
- Semen analysis was performed on 570 infertile men using computer-assisted semen analysis (CSA) and the hyposmotic swelling test (HOS).
- Participants were categorized into age groups, with a specific focus on men over 50 years old.
- Statistical analyses were employed to compare semen parameters between age groups.
Main Results:
- A statistically significant difference was observed in hyposmotic swelling test (HOS) scores and sperm velocity between men over 50 and younger men.
- No other semen parameters, including sperm count, motility (excluding velocity), and morphology, showed significant age-related differences.
- The majority of semen parameters remained comparable across different age groups.
Conclusions:
- Increasing paternal age, specifically over 50, may be associated with subtle changes in specific sperm function (HOS scores) and movement (velocity).
- However, the study could not establish a definitive decline in overall male fertility potential solely based on increasing age due to the similarity in most semen parameters.
- Further research is warranted to fully elucidate the complex interplay between male aging and reproductive capacity.