CCE and EODF as two distinct non-shivering thermogenesis models inducing weight loss

Area of Science:

• Metabolic research
• Obesity studies
• Thermogenesis mechanisms

Background:

• Weight loss is commonly achieved through increased energy expenditure or reduced intake.
• The precise mechanisms by which physical methods induce weight loss in adipose tissue remain incompletely understood.

Purpose of the Study:

• To investigate the distinct thermogenic pathways activated by chronic cold exposure (CCE) and every-other-day fasting (EODF).
• To elucidate the role of the sympathetic nervous system (SNS), creatine pathway, and FGF21-adiponectin axis in CCE and EODF-induced weight loss.
• To detail the metabolic benefits and adipose tissue changes associated with these physical weight loss interventions.

Main Methods:

• Utilized chronic cold exposure (CCE) and every-other-day fasting (EODF) as long-term weight loss models in animal studies.
• Monitored changes in body temperature and metabolism.
• Investigated non-shivering thermogenesis in white and brown adipose tissue via SNS, creatine pathway, and FGF21-adiponectin signaling.

Main Results:

• Both CCE and EODF reduced body weight and improved insulin sensitivity.
• These methods promoted white fat browning and increased endogenous FGF21 expression in adipose tissue.
• CCE activated the SNS and brown fat thermogenesis, while EODF enhanced protein kinase activity in white fat.

Conclusions:

• CCE and EODF represent effective physical strategies for weight loss, influencing adipose tissue function and metabolism.
• These interventions modulate non-shivering thermogenesis through distinct pathways, contributing to metabolic improvements.
• The study provides a detailed understanding of the thermogenic mechanisms underlying physical weight loss methods.