Temperature as a Metabolic Signal Linking Neural and Endocrine Circuits to Energy Homeostasis

Area of Science:

• Physiology
• Neuroscience
• Metabolism

Background:

• Ambient temperature influences mammalian energy homeostasis via complex physiological responses.
• Thermal cues are detected by sensors and transmitted through neural pathways, supplemented by circulating factors.
• Brainstem-hypothalamic networks integrate these signals to regulate critical functions.

Purpose of the Study:

• To synthesize recent advances in understanding thermosensory mechanisms.
• To illustrate how a plastic effector network maintains systemic energy homeostasis.
• To highlight translational implications for metabolic diseases.

Main Methods:

• Review of recent circuit-mapping studies.
• Analysis of single-cell approaches.
• Synthesis of current knowledge on thermosensory pathways.

Main Results:

• Refined understanding of cellular logic in cold- and heat-defense programs.
• Identification of key brain regions (preoptic area, arcuate nucleus) involved.
• Elucidation of coordinated control over feeding, thermogenesis, and endocrine outputs.

Conclusions:

• Thermosensory mechanisms form a plastic effector network crucial for energy homeostasis.
• Understanding these pathways offers potential therapeutic targets for obesity and type 2 diabetes.