ArticleFrontiers in behavioral neuroscience2021
Cocaine-Seeking Behavior Induced by Orexin A Administration in the Posterior Paraventricular Nucleus of the Thalamus Is Not Long-Lasting: Neuroadaptation of the Orexin System During Cocaine Abstinence.
Article in Frontiers in behavioral neuroscience, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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14 citing papers in PubMed, 17 citations in OpenAlex.
- Found in translation: orexin receptor antagonism for the treatment of opioid use disorder.Translational psychiatry · 2025Review
- The Orexin System in Addiction: Neuromodulatory Interactions and Therapeutic Potential.Brain sciences · 2025Review
- Augmented orexin/hypocretin signaling underlies negative affect during acute oxycodone abstinence in rats.Research square · 2025Article
- Drugs of abuse drive neurotransmitter plasticity that alters behavior: implications for mental health.Frontiers in behavioral neuroscience · 2025Review
- Contribution of hypothalamic orexin (hypocretin) circuits to pathologies of motivation.British journal of pharmacology · 2024Review
- Pivotal role of orexin signaling in the posterior paraventricular nucleus of the thalamus during the stress-induced reinstatement of oxycodone-seeking behavior.Journal of psychopharmacology (Oxford, England) · 2024Article
- A novel, non-opioid, selective orexin-1 receptor antagonist for the treatment of substance use disorders.Neuroscience applied · 2024Article
- Sensitivity of Hypocretin System to Chronic Alcohol Exposure: A Human and Animal Study.Neuroscience · 2023Article
- Suvorexant, an FDA-approved dual orexin receptor antagonist, reduces oxycodone self-administration and conditioned reinstatement in male and female rats.Frontiers in pharmacology · 2023Article
- Estradiol-dependent hypocretinergic/orexinergic behaviors throughout the estrous cycle.Psychopharmacology · 2023Review
- Orexin Reserve: A Mechanistic Framework for the Role of Orexins (Hypocretins) in Addiction.Biological psychiatry · 2022Review
- Research progress of the paraventricular thalamus in the regulation of sleep-wake and emotional behaviors.Ibrain · 2022Review
- The Paraventricular Thalamus as a Critical Node of Motivated BehaviorFrontiers in integrative neuroscience · 2021Article
- Understanding the Role of Orexin Neuropeptides in Drug Addiction: Preclinical Studies and Translational Value.Frontiers in behavioral neuroscience · 2021Review
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2 authors at 1 institution in 1 country.
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Abstract
Hypothalamic orexin (Orx) projections to the paraventricular nucleus of the thalamus (PVT) have received growing interest because of their role in drug-seeking behavior. Using an established model of cocaine dependence (i.e., long access [LgA] to cocaine), we previously showed that OrxA injections in the posterior PVT (pPVT) reinstated extinguished cocaine-seeking behavior in rats after an intermediate period of abstinence (2-3 weeks). Considering the long-lasting nature of drug-seeking behavior, the present study examined whether the priming effect of intra-pPVT OrxA administration was preserved after a period of protracted abstinence (4-5 weeks) in rats that self-administered cocaine under LgA conditions. Furthermore, to better understand whether a history of cocaine dependence affects the Orx system-particularly the hypothalamic Orx↔pPVT connection-the number of Orx-expressing cells in the lateral hypothalamus (LH), dorsomedial hypothalamus (DMH), and perifornical area (PFA) and number of orexin receptor 1 (OrxR1)- and OrxR2-expressing cells in the pPVT were quantified. Orexin A administration in the pPVT induced cocaine-seeking behavior after intermediate abstinence, as reported previously. At protracted abstinence, however, the priming effect of OrxA was absent. A higher number of cells that expressed Orx was observed in the LH/DMH/PFA at both intermediate and protracted abstinence. In the pPVT, the number of OrxR2-expressing cells was significantly higher only at intermediate abstinence, with no changes in the number of OrxR1-expressing cells. These data build on our previous findings that the hypothalamic Orx↔pPVT connection is strongly recruited shortly after cocaine abstinence and demonstrate that the priming effect of OrxA is not long lasting. Furthermore, these findings suggest that throughout abstinence, the Orx↔pPVT connection undergoes neuroadaptive changes, reflected by alterations of the number of OrxR2-expressing cells in the pPVT.
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