Neuroimmunometabolism in Health and Disease

Area of Science:

• Neuroscience
• Immunology
• Metabolism

Background:

• Sympathetic neurons regulate adipose tissue function and body weight.
• Neuroimmune crosstalk is crucial for maintaining metabolic homeostasis.
• Obesity is associated with neuroinflammation and impaired sympathetic signaling.

Purpose of the Study:

• To review the neuroimmune mechanisms of sympathetic neuron regulation of adipose tissue.
• To explore the role of neuroinflammation in obesity-associated weight gain.
• To examine shared neuroimmune and immunometabolic pathways in obesity and cancer.

Main Methods:

• Literature review of neuroimmune and immunometabolic mechanisms.
• Analysis of sympathetic-adipose communication under healthy and obese conditions.
• Examination of the link between obesity, cancer, and neuroimmunometabolic signaling.

Main Results:

• Healthy sympathetic-adipose communication relies on anti-inflammatory cues and neurotrophic factors.
• Obesity weakens the sympathetic perineurial barrier, leading to neuroinflammation and neuropathy.
• Impaired neuroimmune signaling in obesity may contribute to shared mechanisms with cancer.

Conclusions:

• Sympathetic neuropathy and neuroinflammation exacerbate weight gain in obesity.
• Neuropeptide Y and tachykinins from sympathetic neurons are vital for brown adipose tissue thermogenesis.
• Dysfunctional neuroimmunometabolic signaling may underlie the obesity-cancer link.