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Updated: Mar 26, 2026
Flow Cytometric Analysis of Biomarkers for Detecting Human Sperm Functional Defects
Published on: April 21, 2022
[PARAMETERS OF SPERMATOGENESIS IN MEN EXPOSED TO DIFFICULT ENVIRONMENTS]
Abstract:
This study was aimed to the comparison of the effects of various unfavorable factors on spermatogenesis and the level of free radical oxidation in the ejaculate. 40 men of reproductive age who visited doctor for lack of children within 2-3 years of marriage were examined. Patients were divided into 4 groups depending on the action of the unfavorable factors: the oil and gas industry workers, workers of radio-location and television and radio broadcasting facilities, creative workers, the unemployed and low-income people. The control group consisted of physically healthy men of similar age who had children within marriage. The malondialdehyde levels in the ejaculate and morphokinetic parameters of sperm cells were assessed. Natural gas and oil-dissolved gas were the most toxic against fertilizing properties of the ejaculate, they led to sharp decline in sperm concentration and motility of sperm cells by reducing the active mobile forms in oil and gas industry workers. In workers of radio-location and television and radio broadcasting facilities, essential modifications of sperm cell morphology were caused by mechanical damage of the microwave radiation. In creative workers suppression of spermatogenesis had complex nature due to the enhanced dynamics of free-radical oxidation, as well as the participation of the central regulatory mechanisms. The unemployed and low-income people with hyponutrition and malnutrition had suppression of spermatogenesis caused by a lack of biological resources necessary to maintain spermatogenesis and provide reliable antioxidant protection. There was an increase in the dynamics of aging of sperm cells. Thus, the intensity of lipid peroxidation, as well as the nature and direction of specific unfavorable factor determine the cumulative effect of the toxicity of this factor and the fertilizing capacity of the ejaculate.
Insights
Environmental factors significantly impact male fertility. Occupational exposures, like oil/gas or radiation, and lifestyle factors such as poor nutrition, impair sperm health and reduce fertility by increasing oxidative stress and damaging sperm cells.
Area of Science:
- Reproductive biology
- Environmental toxicology
- Occupational health
Background:
- Male infertility affects numerous couples seeking conception.
- Identifying environmental and lifestyle factors impacting sperm quality is crucial for reproductive health.
- Oxidative stress and its role in male reproductive dysfunction require further investigation.
Purpose of the Study:
- To compare the effects of diverse unfavorable factors on spermatogenesis and ejaculate free radical oxidation.
- To assess the impact of occupational exposures (oil/gas, radio-location/broadcasting) and socioeconomic status on sperm parameters.
- To investigate the relationship between lipid peroxidation, ejaculate toxicity, and male fertilizing capacity.
Main Methods:
- Examined 40 men of reproductive age with unexplained infertility, divided into 4 exposure groups and a control group.
- Assessed malondialdehyde (MDA) levels in ejaculate as a marker of lipid peroxidation.
- Evaluated sperm morphokinetic parameters, including concentration, motility, and morphology.
Main Results:
- Oil and gas industry exposures were most toxic, significantly reducing sperm concentration and motility.
- Microwave radiation exposure in radio-location/broadcasting workers led to sperm morphology damage.
- Creative workers showed complex spermatogenesis suppression linked to free radical oxidation and central regulatory issues.
- Unemployed/low-income individuals experienced suppressed spermatogenesis due to nutritional deficiencies and increased sperm aging.
Conclusions:
- The intensity of lipid peroxidation and the specific unfavorable factor dictate the toxicity and impact on ejaculate fertilizing capacity.
- Diverse environmental and lifestyle factors contribute to male infertility through distinct mechanisms, including oxidative stress and direct sperm damage.
- Understanding these specific impacts is vital for targeted interventions to improve male reproductive health.
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