Emerging mechanisms of obesity-associated immune dysfunction

Area of Science:

• Immunology
• Metabolic disease
• Obesity research

Background:

• Obesity is linked to numerous health issues like diabetes, heart disease, and cancer.
• Dysregulated immunity and inflammation are central to obesity-related complications.
• Metabolic overload in obesity drives immune system dysfunction.

Purpose of the Study:

• To review mechanisms linking obesity to inflammation and impaired immunity.
• To explore how obesity affects immune cell metabolism, hormone regulation, and extracellular vesicle function.
• To highlight the role of fatty acid metabolism and oxylipins in obesity-induced inflammation.

Main Methods:

• Literature review of emerging mechanisms.
• Analysis of hormonal, extracellular vesicle, and fatty acid metabolic pathways.
• Discussion of oxylipin imbalances in obesity.

Main Results:

• Obesity alters hormones regulating immune cell metabolism and inflammation.
• Adipose tissue extracellular vesicles in obesity dysregulate immune cell cytokine secretion.
• Impaired fatty acid metabolism and altered oxylipin profiles contribute to inflammation.

Conclusions:

• Obesity-driven inflammation underlies many associated diseases.
• Hormonal changes, extracellular vesicles, and lipid metabolism are key mediators.
• Further research with diverse models is needed to understand obesity's complex impact on immunity.