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Adenosine triphosphate levels in human spermatozoa.
Y R Bilgeri1, A Winckelmann, M Berzin
1Department of Chemical Pathology, School of Pathology, University of the Witwatersrand, Johannesburg, South Africa.
Archives of Andrology
|January 1, 1987
Summary
Adenosine triphosphate (ATP) levels in sperm do not directly correlate with motility in the general population. However, lower ATP levels in individual patients predict a significant decline in sperm motility over time.
Area of Science:
- Reproductive Biology
- Sperm Physiology
- Biochemistry
Background:
- Adenosine triphosphate (ATP) is crucial for sperm motility and fertilizing potential.
- Previous assumptions suggested a direct correlation between high ATP levels and superior sperm function.
- Other factors like microtubule defects and semen viscosity can also impact sperm motility.
Purpose of the Study:
- To investigate the relationship between adenosine triphosphate (ATP) levels and sperm motility and viability.
- To determine if ATP levels predict motility changes over time post-ejaculation.
- To compare ATP levels in semen samples with normal sperm counts versus those with oligozoospermia.
Main Methods:
- Analysis of ATP levels in human spermatozoa.
- Correlation assessment between ATP levels (per 1 million spermatozoa) and motility parameters (percentage, forward progression, viability).
- Longitudinal assessment of motility and ATP concentration changes over a 4-hour period post-ejaculation.
- Comparison of ATP levels between semen samples with normal sperm counts and oligozoospermia.
Main Results:
- No direct correlation was found between motility percentage, forward progression, viability, and ATP levels in the general population.
- In individual patients, sperm motility, viability, and ATP concentration decreased comparably over 4 hours post-ejaculation.
- Semen samples with normal sperm counts exhibited higher ATP levels than those with oligozoospermia.
- Spermatozoa with low ATP levels (<0.60 X 10(-2) nmol/million) showed a rapid motility decline, unlike samples with sustained motility (>10%) and higher ATP levels (avg. 3.30 X 10(-2) nmol/million).
Conclusions:
- Sperm ATP levels alone do not determine motility in the general population.
- Low ATP levels in individual semen samples are indicative of poor sperm motility maintenance over time.
- ATP levels are significantly lower in patients with oligozoospermia compared to those with normal sperm counts.