Neuroendocrine regulation of substrate utilization

Neuroendocrine regulation of substrate utilization is not a molecule, protein, or classic drug target, but rather a broad physiological process mediated by the neuroendocrine system involving central and peripheral nervous and endocrine signals. This process orchestrates energy balance and the allocation of substrates such as glucose, fatty acids, and amino acids to tissues in response to internal (e.g., hormonal, nutrient status) and external (e.g., stress, feeding state) cues. Key molecular mediators include hypothalamic neuronal circuits (such as neuropeptide Y, POMC neurons), hormones (insulin, leptin, ghrelin, cortisol, thyroid hormone), and neurotransmitters (dopamine, serotonin, gamma-aminobutyric acid). These act primarily through various receptors and transporters to modulate appetite, energy expenditure, fat distribution, glucose uptake, and other metabolic parameters. Dysregulation of this system is implicated in obesity, diabetes, cancer, and other metabolic or neuroendocrine disorders. However, "neuroendocrine regulation of substrate utilization" itself is not a single molecular entity and cannot be directly targeted by drugs, but encompasses numerous pathways and molecular targets such as receptors, enzymes, and transporters within the neuroendocrine-metabolic axis[1][2][3][4][5].