Abstract
Orexin (OX, hypocretin: HCRT) as a neuropeptide is produced in a distinct population
of neurons in the posterior lateral hypothalamus (LH). OX neurons implicate in reward function.
OX makes a main input from the hypothalamus to the ventral tegmental area (VTA) of the midbrain.
OX, through OX receptors (OXR1, OXR2) activates VTA dopamine (DA) neurons. VTA neurons
are involved in reward processing and motivation. In this review, we will discuss the OX effect
on addiction through VTA activation and related areas of the brain.
Keywords:
Orexin, SB-334867, addiction, VTA, orexin receptor 1, orexin receptor 2.
Graphical Abstract
[24]
Arami, M.K.; Sarihi, A.; Behzadi, J.; Malakouti, S.M.; Amiri, I.; Ekbatani, R.Z. The effect of hyperglycemia on nitric oxidergic neurons in nucleus tractus solitarius and blood pressure regulation in rats with induced diabetes. Iranian J Diabetes Lipid Disord, 2005, 4(3), E2.
[25]
Arami, M.K.; Sarihi, A.; Malacoti, S.M.; Behzadi, G.; Vahabian, M.; Amiri, I. The effect of nucleus tractus solitarius nitric oxidergic neurons on blood pressure in diabetic rats. Iran. Biomed. J., 2006, 10(1), 15-19.
[81]
Messina, G.; Chieffi, S.; Monda, M. Orexin A exerts more thermogenic than orexinergic functions. Peer J. PrePrints, 2014, 2, e392v1.
[99]
Sartor, G.; Smith, R.J.; Aston-Jones, G. Lateral hypothalamic orexin/hypocretin afferents that are necessary for the expression of cocaine conditioned place preference; Neuroscience meeting planner online, Program No. 67.5. Soc. Neurosci., 2010.
[103]
Etaee, F.; et al., Effects of buprenorphine on the memory and learning deficit induced by methamphetamine administration in male rats. Front. Behav. Neurosci., 2021, 15, 748563.
[104]
Zlebnik, N.E.; et al., Age-specific treatment effects of orexin/ hypocretin-receptor antagonism on methamphetamine-seeking behavior. Drug Alcoh. Depend., 2021, 224, 108719.