News | How Stress-Related Mitochondrial Changes Affect Sperm Motility
A recent study suggests that stress increases sperm motility by altering mitochondrial function and epigenetic mechanisms. Conducted by the University of Colorado Anschutz Medical Campus, the study examined the effects of stress on sperm maturation and movement and was published in Nature Communications in September 2024.
Findings
Sperm motility increased two to three months after a stressful event. Mouse and human experiments indicated that stress affects mitochondrial activity and motility by regulating gene expression and changing the composition of extracellular vesicles (EVs) associated with sperm. The findings describe a possible long-term effect of stress on male reproductive health.
Stress and Fertility
Although chronic stress is known to affect reproductive health, its cellular and molecular mechanisms remain unclear. The study found that stress triggers an adaptive process called allostasis, in which cellular changes persist after the stress ends. Analysis of samples from 34 healthy men found that stress three months earlier was positively associated with sperm movement measures, including curvilinear, average-path, and straight-line velocity. Effects on extracellular vesicles may be important.
Mitochondria and Sperm Motility
In mice, extracellular vesicles following stress exposure increased mitochondrial respiration and ATP (adenosine triphosphate) production in sperm, improving motility. The finding underscores the role of mitochondria in sperm movement and fertility.
Clinical Significance
Short-term stress may affect sperm function, while longer effects may persist through mitochondrial and gene-regulatory mechanisms. The findings may guide research into treatments that regulate extracellular vesicles to improve sperm function. The researchers also noted the possible importance of stress management in male fertility assessment and treatment.
News | How Stress-Related Mitochondrial Changes Affect Sperm Motility
News | How Stress-Related Mitochondrial Changes Affect Sperm Motility
A recent study suggests that stress increases sperm motility by altering mitochondrial function and epigenetic mechanisms. Conducted by the University of Colorado Anschutz Medical Campus, the study examined the effects of stress on sperm maturation and movement and was published in Nature Communications in September 2024.
Findings
Sperm motility increased two to three months after a stressful event. Mouse and human experiments indicated that stress affects mitochondrial activity and motility by regulating gene expression and changing the composition of extracellular vesicles (EVs) associated with sperm. The findings describe a possible long-term effect of stress on male reproductive health.
Stress and Fertility
Although chronic stress is known to affect reproductive health, its cellular and molecular mechanisms remain unclear. The study found that stress triggers an adaptive process called allostasis, in which cellular changes persist after the stress ends. Analysis of samples from 34 healthy men found that stress three months earlier was positively associated with sperm movement measures, including curvilinear, average-path, and straight-line velocity. Effects on extracellular vesicles may be important.
Mitochondria and Sperm Motility
In mice, extracellular vesicles following stress exposure increased mitochondrial respiration and ATP (adenosine triphosphate) production in sperm, improving motility. The finding underscores the role of mitochondria in sperm movement and fertility.
Clinical Significance
Short-term stress may affect sperm function, while longer effects may persist through mitochondrial and gene-regulatory mechanisms. The findings may guide research into treatments that regulate extracellular vesicles to improve sperm function. The researchers also noted the possible importance of stress management in male fertility assessment and treatment.
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