Dietary Polyphenols Target Mitochondrial Bioenergetics in the Liver-Adipose-Muscle Axis

Area of Science:

• Nutritional Biochemistry
• Metabolic Health
• Mitochondrial Biology

Background:

• Dietary polyphenols are bioactive compounds found in plant-based foods.
• Metabolic syndrome, obesity, and type 2 diabetes are significant health concerns.
• Mitochondrial dysfunction is implicated in metabolic diseases.

Purpose of the Study:

• To review the mechanisms by which dietary polyphenols improve mitochondrial function.
• To explore the role of intertissue communication in mediating polyphenol effects.
• To highlight the contribution of gut microbiota to polyphenol bioactivity.

Main Methods:

• Literature review of studies on dietary polyphenols and metabolic health.
• Analysis of research on polyphenol interactions with liver, adipose, and muscle tissues.
• Examination of signaling pathways including hepatokines, adipokines, and myokines.
• Investigation of the gut microbiota's role in polyphenol metabolism.

Main Results:

• Polyphenols enhance mitochondrial bioenergetics in the liver, adipose tissue, and skeletal muscle.
• Intertissue communication pathways (liver-muscle, liver-fat, fat-muscle axes) are modulated by polyphenols.
• Gut microbiota metabolize polyphenols into active compounds (e.g., urolithins), enhancing mitochondrial function via the "gut-X" axis.
• These effects collectively improve metabolic health.

Conclusions:

• Dietary polyphenols offer a promising complementary strategy for managing metabolic disorders.
• Targeting mitochondrial function through diet, particularly with polyphenols, is a key therapeutic avenue.
• The gut microbiota plays a critical role in maximizing the metabolic benefits of dietary polyphenols.