• Thumbnail for Orexin
    Orexin (/ɒˈrɛksɪn/), also known as hypocretin, is a neuropeptide that regulates arousal, wakefulness, and appetite. It exists in the forms of orexin-A...
    54 KB (6,129 words) - 20:20, 27 June 2024
  • An orexin receptor antagonist, or orexin antagonist, is a drug that inhibits the effect of orexin by acting as a receptor antagonist of one (selective...
    19 KB (1,978 words) - 11:32, 1 May 2024
  • Thumbnail for Narcolepsy
    clinically characterized by symptoms of EDS and cataplexy, and/or will have CSF orexin levels of less than 110 pg/ml. Cataplexy are transient episodes of aberrant...
    71 KB (8,196 words) - 12:40, 14 July 2024
  • gene (HCRTR1, HCRTR2). Both orexin receptors exhibit a similar pharmacology – the 2 orexin peptides, orexin-A and orexin-B, bind to both receptors and...
    11 KB (1,052 words) - 14:36, 12 July 2024
  • Orexin-A, also known as hypocretin-1, is a naturally occurring neuropeptide and orexin isoform. The orexinergic nucleus in the lateral hypothalamus is...
    5 KB (653 words) - 05:33, 8 December 2023
  • Thumbnail for Lateral hypothalamus
    (e.g., anandamide) and the orexin neuropeptides orexin-A and orexin-B are the primary signaling neurochemicals in orexin neurons; pathway-specific neurochemicals...
    27 KB (3,032 words) - 13:35, 14 November 2023
  • Thumbnail for Suvorexant
    Suvorexant (category Orexin antagonists)
    Suvorexant, sold under the brand name Belsomra, is an orexin antagonist medication which is used in the treatment of insomnia. It is indicated specifically...
    94 KB (8,958 words) - 18:56, 5 July 2024
  • Thumbnail for Hypocretin (orexin) receptor 1
    Orexin receptor type 1 (Ox1R or OX1), also known as hypocretin receptor type 1 (HcrtR1), is a protein that in humans is encoded by the HCRTR1 gene. The...
    10 KB (1,104 words) - 02:20, 10 March 2024
  • Thumbnail for Endocannabinoid system
    colocalized on orexin projection neurons in the lateral hypothalamus and many output structures of the orexin system, where the CB1 and orexin receptor 1...
    67 KB (7,709 words) - 06:15, 27 May 2024
  • Thumbnail for Daridorexant
    Daridorexant (category Orexin antagonists)
    Daridorexant, sold under the brand name Quviviq, is an orexin antagonist medication which is used for the treatment of insomnia. Daridorexant is taken...
    48 KB (4,075 words) - 03:39, 13 May 2024
  • Thumbnail for Hypocretin (orexin) receptor 2
    Orexin receptor type 2 (Ox2R or OX2), also known as hypocretin receptor type 2 (HcrtR2), is a protein that in humans is encoded by the HCRTR2 gene. It...
    17 KB (1,671 words) - 16:14, 17 July 2024
  • Thumbnail for Lemborexant
    Lemborexant (category Orexin antagonists)
    Lemborexant, sold under the brand name Dayvigo, is an orexin antagonist medication which is used in the treatment of insomnia. It is indicated specifically...
    21 KB (1,687 words) - 04:21, 27 January 2024
  • Thumbnail for Seltorexant
    Seltorexant (category Orexin antagonists)
    an orexin antagonist medication which is under development for the treatment of depression and insomnia. It is a selective antagonist of the orexin OX2...
    7 KB (498 words) - 07:20, 7 January 2024
  • hypothalamic neurons that produce the neuropeptide hypocretin (also called orexin), which regulates arousal and has a role in stabilization of the transition...
    22 KB (2,466 words) - 00:26, 13 June 2024
  • and associate with arousal. Orexin deficiency has been identified as responsible for narcolepsy. Research suggests that orexin and histamine neurons play...
    7 KB (696 words) - 01:31, 29 December 2023
  • Thumbnail for Dopaminergic pathways
    homodimers, and they also heterodimerized with both orexin receptors. ... In conclusion, orexin receptors have a significant propensity to make homo-...
    47 KB (4,229 words) - 07:37, 3 June 2024
  • Thumbnail for Danavorexton
    Danavorexton (category Orexin receptor agonists)
    Danavorexton (developmental code name TAK-925) is a selective orexin 2 receptor agonist. It is a small-molecule compound and is administered intravenously...
    5 KB (301 words) - 11:39, 13 January 2024
  • loss of approximately 70,000 orexin-releasing neurons in the lateral hypothalamus, resulting in significantly reduced orexin levels in the cerebrospinal...
    47 KB (6,058 words) - 22:30, 19 June 2024
  • Thumbnail for Catabolism
    least some catabolic effects have been discovered, including cytokines, orexin (known as hypocretin), and melatonin.[citation needed] The word catabolism...
    6 KB (453 words) - 19:44, 24 December 2023
  • Thumbnail for Postprandial somnolence
    sensed by glucose-inhibited neurons in the lateral hypothalamus. These orexin-expressing neurons appear to be hyperpolarised (inhibited) by a glucose-activated...
    17 KB (1,778 words) - 16:33, 21 March 2024
  • Thumbnail for Eugeroic
    940) Fluorafinil (CRL-40,941) Fluorenol Methylbisfluoromodafinil Selective orexin receptor agonists (two are currently under development by Takeda, danavorexton...
    11 KB (958 words) - 17:37, 1 April 2024
  • Thumbnail for Insomnia
    antidepressants and antihistamines, quetiapine, orexin receptor antagonists, and melatonin receptor agonists, the orexin antagonist lemborexant and the Z-drug eszopiclone...
    123 KB (15,141 words) - 16:56, 22 June 2024
  • Thumbnail for Neurotransmitter
    (8–9): 405–11. doi:10.1016/j.mad.2011.06.005. PMC 3367503. PMID 21729715. Orexin receptor antagonists a new class of sleeping pill, National Sleep Foundation...
    94 KB (8,341 words) - 12:41, 1 June 2024
  • Thumbnail for Frisson
    abstract). In specific subregions of each area, either opioid-stimulating or orexin-stimulating microinjections appear to enhance the number of liking reactions...
    21 KB (2,628 words) - 01:01, 4 March 2024
  • Thumbnail for Somnifacient
    ramelteon. Dual orexin receptor antagonists are drugs that block the orexin receptors OX1 and OX2, hence reducing the wakeful effect of the orexin system and...
    27 KB (2,930 words) - 09:17, 7 May 2024
  • Thumbnail for Adderall
    approximately 70,000 orexin-releasing neurons in the lateral hypothalamus, leading to significantly reduced cerebrospinal orexin levels; this reduction...
    58 KB (21,582 words) - 23:34, 14 July 2024
  • Thumbnail for Lisdexamfetamine
    approximately 70,000 orexin-releasing neurons in the lateral hypothalamus, leading to significantly reduced cerebrospinal orexin levels; this reduction...
    43 KB (13,910 words) - 18:45, 8 July 2024
  • hedonic coldspot. In rats, microinjections of opioids, endocannabinoids, and orexin are capable of enhancing liking reactions in these hotspots. The hedonic...
    45 KB (6,080 words) - 15:20, 15 July 2024
  • Thumbnail for Hypothalamus
    "Chapter 6: Widely Projecting Systems: Monoamines, Acetylcholine, and Orexin". In Sydor A, Brown RY (eds.). Molecular Neuropharmacology: A Foundation...
    49 KB (4,881 words) - 10:03, 15 July 2024
  • Thumbnail for Amphetamine
    approximately 70,000 orexin-releasing neurons in the lateral hypothalamus, leading to significantly reduced cerebrospinal orexin levels; this reduction...
    273 KB (26,879 words) - 11:18, 15 July 2024