Results 191 to 200 of about 9,891 (221)
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Selective orexin receptor antagonists
Bioorganic & Medicinal Chemistry Letters, 2013The orexin, or hypocretin, neuropeptides (orexin-A and orexin-B) are produced on neurons in the hypothalamus which project to key areas of the brain that control sleep-wake states, modulation of food intake, panic, anxiety, emotion, reward and addictive behaviors.
Terry P, Lebold +2 more
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Orexin Projections and Localization of Orexin Receptors
2006The past several years have provided important insights into the physiological significance of the central orexin system. An important component of these is an increased understanding of the unique neuroanatomy of the orexin/hypocretin system. The orexin peptides, orexin-A and orexin-B, are produced in a restricted region of the central nervous system,
Jacob N. Marcus, Joel K. Elmquist
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[Orexins and orexin receptors].
Ceskoslovenska fysiologie, 1999The hypothalamus plays a central role in the integrated control of feeding and energy homeostasis. Two novel neuropeptides Orexin -A and -B were identified. Orexins activate two closely related G protein-coupled receptors and stimulate food consumption. They act also as mediators in the central feedback mechanism and regulates feeding behavior.
K, Kotaska, R, Průsa
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Expression of Orexin Receptors in the Pituitary
2012Orexin receptors type 1 (OX1R) and type 2 (OX2R) are G protein-coupled receptors whose structure is highly conserved in mammals. OX1R is selective for orexin A, and OX2R binds orexin A and orexin B with similar affinity. Orexin receptor expression was observed in human, rat, porcine, sheep as well as Xenopus laevis pituitaries, both in the ...
Tadeusz, Kaminski, Nina, Smolinska
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Orexins and Orexin Receptors: From Molecules to Integrative Physiology
2008Recent studies have implicated the orexin system as a critical regulator of sleep/wake states, feeding behavior, and reward processes. Orexin deficiency results in narcolepsy-cataplexy in humans, dogs, and rodents, suggesting that the orexin system is particularly important for maintenance of wakefulness.
Taizo, Matsuki, Takeshi, Sakurai
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2005
“Reverse pharmacological” approaches, i.e., ligand identification using cell lines expressing orphan receptors, combined with genetic engineering techniques, have increased our understanding of novel signaling systems in the body (1). Orexin/hypocretin is the first example of the factors that were successfully applied using such approaches (2).
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“Reverse pharmacological” approaches, i.e., ligand identification using cell lines expressing orphan receptors, combined with genetic engineering techniques, have increased our understanding of novel signaling systems in the body (1). Orexin/hypocretin is the first example of the factors that were successfully applied using such approaches (2).
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Orexins Activate Histaminergic Neurons via the Orexin 2 Receptor
Biochemical and Biophysical Research Communications, 2002Orexins (orexin A and B) are recently identified neuropeptides implicated in the regulation of vigilance states and energy homeostasis. We have shown here the physiological significance of histaminergic neurons in the orexin-induced arousal responses. Immunohistochemical and electron microscopic techniques revealed direct synaptic interaction between ...
Akihiro, Yamanaka +9 more
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Hippocampal orexin receptors: Localization and function
2022Orexin (hypocretin) is secreted from the perifornical/lateral hypothalamus and is well known for sleep regulation. Orexin has two, orexin A and B, transcripts and two receptors, type 1 and 2 (OX1R and OX2R), located in the plasma membrane of neurons in different brain areas, including the hippocampus involved in learning, memory, seizures, and epilepsy,
Mahmoud, Elahdadi Salmani +2 more
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Role of Orexin-B/Orexin 2 receptor in myocardial protection
Clinical Science, 2019Abstract Emerging evidence attributes to orexins/hypocretins (ORs) a protective function in the regulation of cardiovascular responses, heart rate, and hypertension. However, little is known about any direct effect of orexins in the heart function.
Imperatore Roberta, Cristino Luigia
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Orexin 2 receptor is involved in orexin A-induced hyperlocomotion in rats
Pharmacological Reports, 2019The orexin system regulates various functions, including sleep/wake cycles, feeding, and cognition. Orexin A and orexin B are endogenous neuropeptides for both orexin 1 (OX1) and orexin 2 (OX2) receptors. Orexin A has a potent agonistic activity for both the receptors and is known to increase locomotor activity in rats.
Shunsuke, Maehara +2 more
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