Related Experiment Video
Updated: May 15, 2026
09:29
Isolation of Targeted Hypothalamic Neurons for Studies of Hormonal, Metabolic, and Electrical Regulation
Published on: August 4, 2023
Central functions of the orexinergic system.
Xiao-Yang Zhang1, Lei Yu, Qian-Xing Zhuang
1Department of Biological Science and Technology and State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210093, China.
Neuroscience Bulletin
|January 10, 2013
Summary
The orexin system, originating in the hypothalamus, regulates vital functions like sleep, feeding, and reward. Its dysfunction is linked to narcolepsy, highlighting its role in integrating bodily and non-bodily processes.
Area of Science:
- Neuroscience
- Physiology
- Endocrinology
Background:
- The neuropeptide orexin is produced by hypothalamic neurons with widespread projections throughout the central nervous system.
- The orexinergic system is integral to regulating fundamental physiological processes.
Purpose of the Study:
- To review the central functions of the orexinergic system.
- To discuss diseases associated with orexin system dysfunction.
- To explore the role of orexin in somatic-non-somatic integration.
Main Methods:
- Literature review of studies on the orexinergic system.
- Analysis of the physiological roles of orexin.
- Examination of the link between orexin and neurological disorders.
Main Results:
- Orexin regulates feeding, energy balance, sleep-wake cycles, reward, addiction, neuroendocrine, and motor control.
- Absence of orexin leads to narcolepsy-cataplexy, a disorder affecting both somatic and non-somatic functions.
- The orexinergic system demonstrates widespread influence across diverse physiological domains.
Conclusions:
- The orexinergic system is a critical regulator of numerous physiological functions.
- Dysfunction of the orexin system results in significant health consequences, such as narcolepsy.
- Orexin plays a pivotal role in the integration of somatic and non-somatic processes within the central nervous system.
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