Rutin protects against aging-related metabolic dysfunction

Area of Science:

• Gerontology and Metabolic Health
• Nutraceuticals and Aging

Background:

• Aging is intrinsically linked to chronic diseases, with metabolic dysfunction being a primary concern.
• Metabolic disorders in aging populations necessitate the exploration of therapeutic interventions.

Purpose of the Study:

• To investigate the efficacy of rutin in ameliorating aging-related metabolic dysfunction.
• To elucidate the molecular mechanisms underlying rutin's effects on metabolic health in aged individuals.

Main Methods:

• Administration of rutin to aged rats.
• Assessment of metabolic parameters including blood glucose, insulin levels, insulin resistance (HOMA-IR), glucose and insulin tolerance tests (IPGTT, IPITT).
• Analysis of key signaling pathways (Akt, IRS-1), inflammatory markers (IL-1β, TNFα), lipid profiles (TG), liver enzymes (AST, ALT), mitochondrial function, ER stress markers (ATF3, GRP78), and oxidative stress markers (MDA, GSH, SOD).

Main Results:

• Rutin significantly improved glucose and insulin tolerance, reduced blood pressure, and decreased HOMA-IR in aged rats.
• Rutin administration inhibited inflammatory markers, reduced lipid accumulation (TG), and normalized liver enzymes (AST, ALT).
• Rutin treatment enhanced mitochondrial function, alleviated ER stress and oxidative stress, and increased antioxidant capacity.

Conclusions:

• Rutin effectively improves aging-related metabolic dysfunction in aged rats.
• The beneficial effects of rutin are associated with the amelioration of inflammation, lipid accumulation, mitochondrial dysfunction, ER stress, and oxidative stress.
• Rutin presents a potential therapeutic agent for interventions targeting aging and its associated metabolic diseases.