Sex differences in vascular aging in response to testosterone

Area of Science:

• Gerontology
• Cardiovascular Science
• Endocrinology

Background:

• Vascular aging, characterized by arterial stiffening and endothelial dysfunction, increases cardiovascular disease risk.
• Women experience delayed vascular aging until menopause, after which it accelerates, resembling men's aging patterns.
• Sex hormone fluctuations, particularly declining testosterone in both sexes, are implicated in these sex differences.

Purpose of the Study:

• To review and summarize research on sex differences in vascular aging concerning testosterone.
• To explore testosterone's potential role in mitigating oxidative stress and inflammation in vascular aging.
• To briefly examine testosterone's influence on vascular adaptations to exercise training.

Main Methods:

• This is a review article, synthesizing existing research.
• Literature search focused on sex differences, vascular aging, testosterone, and exercise.
• Data were compiled from peer-reviewed studies on human and animal models.

Main Results:

• Low testosterone is linked to impaired endothelial function and increased arterial stiffness in men.
• The effect of androgens on vascular aging in women is less clear but warrants further investigation.
• Testosterone may influence vascular aging through antioxidant and anti-inflammatory pathways, with potential sex-specific effects.

Conclusions:

• Testosterone plays a significant role in vascular aging, with potential sex-specific mechanisms.
• Understanding testosterone's impact is crucial for developing targeted interventions for age-associated cardiovascular diseases.
• Further research is needed to fully elucidate the role of testosterone in women's vascular aging and exercise response.