Physiological Role of Orexinergic System for Health.
Level 5 - mechanism / opinion, no new human data
Narrative review describing biological mechanisms without systematic search methodology or original data.
PubMed 35886210 · doi:10.3390/ijerph19148353
What was done
This narrative review synthesizes literature on the mechanisms of the orexin (hypocretin) neuropeptide system and its interactions across the central nervous system. The authors describe its involvement in sleep-wake regulation, feeding behavior, energy homeostasis, reward pathways, goal-directed behaviors, aging, and neurodegenerative conditions, as well as therapeutic implications for obesity, drug addiction, and emotional stress.
What was found
The abstract summarizes general physiological functions and therapeutic targets qualitatively; no numerical data, effect sizes, or quantitative findings are reported in the abstract.
Why it matters
The review outlines the broad regulatory scope of orexin signaling across metabolic and neurological pathways, providing context for therapeutic development targeting orexin receptors in metabolic and neuropsychiatric disorders.
Limits
This is an unsystematic narrative review presenting no new empirical data or quantitative meta-analysis. The abstract provides no search strategy, study selection criteria, sample sizes, or clinical outcome measurements.
Cited by
- supports The orexin (hypocretin) system is involved in hunger regulation and has implications for the treatment of obesity.