Immune-mediated interactions between sarcopenia and atherosclerosis in aging

Area of Science:

• Immunology
• Gerontology
• Cardiovascular Science

Background:

• Sarcopenia and atherosclerosis are common age-related diseases.
• These conditions share underlying immune-mediated mechanisms.
• Inflammaging, or chronic low-grade inflammation with aging, is a key factor.

Purpose of the Study:

• To review the interconnectedness of sarcopenia and atherosclerosis.
• To elucidate the role of inflammaging in driving these linked conditions.
• To explore potential therapeutic strategies targeting shared pathways.

Main Methods:

• Literature review synthesizing current research on aging, immunity, sarcopenia, and atherosclerosis.
• Analysis of key immune dysregulations contributing to age-related diseases.
• Examination of molecular pathways linking inflammation, muscle, and vascular health.

Main Results:

• Dysregulated immune responses, including macrophage polarization imbalance and T/B cell dysfunction, characterize inflammaging.
• These immune changes promote oxidative stress and insulin resistance, accelerating both muscle and vascular decline.
• A vicious cycle exists where inflammation exacerbates sarcopenia and atherosclerosis.

Conclusions:

• Shared immune pathways, particularly inflammaging, create a strong link between sarcopenia and atherosclerosis.
• Targeting these common inflammatory mechanisms offers potential for dual-benefit interventions.
• Integrated therapeutic approaches are needed to combat age-related muscle and vascular deterioration.