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Sperm motility and ATP content in seminal hyperviscosity
G R Mendeluk1, M J Munuce, C Carizza
1Departamentos de Bioquímica Clínica y Tecnología Farmacéutica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Argentina.
Archives of Andrology
|November 14, 1997
Summary
Semen viscosity impacts sperm function in asthenospermia. Hyperviscous samples show reduced head displacement but improved sperm recovery and higher ATP content, suggesting altered motility characteristics.
Area of Science:
- Reproductive Biology
- Andrology
- Sperm Physiology
Background:
- Asthenospermia, characterized by reduced sperm motility, is a significant factor in male infertility.
- Semen viscosity is a poorly understood parameter that may influence sperm function and reproductive outcomes.
- Assessing sperm motility, recovery, and energy metabolism is crucial for understanding male reproductive health.
Purpose of the Study:
- To investigate the relationship between semen viscosity and key sperm parameters in asthenospermic individuals.
- To compare sperm motility, progressive motility recovery after swim-up, and ATP content in normoviscous versus hyperviscous asthenospermic samples.
Main Methods:
- Semen samples were categorized as normoviscous or hyperviscous.
- Sperm motility was assessed using Hamilton Thorne Research motility analysis.
- Progressive spermatozoa (Grade A) recovery after swim-up was evaluated.
- Spermatozoa ATP content was measured using bioluminescence.
Main Results:
- Hyperviscous semen exhibited significantly lower amplitude of lateral head displacement (ALH).
- Spermatozoa from hyperviscous samples showed a significantly higher Grade A recovery percentage after swim-up.
- ATP content per living spermatozoon was significantly higher in hyperviscous samples compared to normoviscous samples.
Conclusions:
- In asthenospermia, hyperviscous ejaculates are associated with reduced sperm head displacement but enhanced post-swim-up recovery and higher ATP levels.
- Semen viscosity appears to be an important factor influencing sperm quality and function in asthenospermic individuals.
- These findings suggest that viscosity may play a complex role in sperm motility and energy metabolism.