Orexin (hypocretin) and addiction
Open accessAbstract
Although originally implicated in appetite and sleep/wakefulness, the hypothalamic orexin (hypocretin) system has now been demonstrably linked with motivated behavior. This highly plastic system responds to reward-associated environmental stimuli and becomes pathologically overactive in addicted states. Here, we provide a brief overview of the roles of the orexin system in reward-seeking and addiction, as well as potential therapeutic opportunities for substance use disorders based on normalizing orexin function.
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Orexin is associated with memory processing, motivation, reward, and addiction, which have been described as behaviors that are affected by TBI.
“Orexin is also associated with memory processing,113–116 motivation, reward,117 and addiction,118 which have been described as behaviors that are affected by TBI.9,119–123”
From Effects of Traumatic Brain Injury on the Orexin/Hypocretin System (2025) · cites this paper as [118]
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Self-citation
- Authors
- Mehr, J. B., Bilotti, M. M., & James, M. H.
- Affiliations
- Rutgers, The State University of New Jersey (US)
- Corresponding author
- James, Morgan H.
- Venue
- Trends in Neurosciences
- Publisher
- Elsevier BV
- Published
- 2021-11
- Volume
- 44
- Issue
- 11
- Pages
- 852-855
- ISSN
- 0166-2236 (ISSN-L)
- PMC
- PMC8772282
- OpenAlex
- W3205123583
- Cited by
- 40
- References
- 12
- Citations by year
- 2026: 5 · 2025: 7 · 2024: 8 · 2023: 8 · 2022: 11 · 2021: 1
- FWCI
- 3.66
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Licence
- Locations
- Trends in Neurosciences (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Institute on Drug Abuse (R00 045765)
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
- Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
- Keywords
- orexin, addiction, reward seeking, motivated behavior, substance use disorders, hypothalamus, sleep-wake regulation, appetite, therapeutic target
- MeSH terms
- Orexins, Humans, Hypothalamus, Neuropeptides, Wakefulness, Intracellular Signaling Peptides and Proteins
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