Results 11 to 20 of about 12,783 (215)

Neurobiology of the Orexin System and Its Potential Role in the Regulation of Hedonic Tone

open access: yesBrain Sciences, 2022
Orexin peptides comprise two neuropeptides, orexin A and orexin B, that bind two G-protein coupled receptors (GPCRs), orexin receptor 1 (OXR1) and orexin receptor 2 (OXR2).
Martin A. Katzman, Matthew P. Katzman
doaj   +1 more source

Activity of putative orexin neurons during cataplexy

open access: yesMolecular Brain, 2022
It is unclear why orexin-deficient animals, but not wild-type mice, show cataplexy. The current hypothesis predicts simultaneous excitation of cataplexy-inhibiting orexin neurons and cataplexy-inducing amygdala neurons.
Shi Zhou   +7 more
doaj   +1 more source

Involvement of the Orexinergic System in Cancer: Antitumor Strategies and Future Perspectives

open access: yesApplied Sciences, 2023
Peptides promote the mitogenesis and migration of tumor cells, and cancer cells overexpress peptide receptors. The involvement of the orexinergic system in cancer is reviewed here, including thirteen cancer types (e.g., adrenocortical adenoma, breast ...
Pilar Marcos, Rafael CoveƱas
doaj   +1 more source

Presence of orexin A and orexin 1 receptor in the buffalo prostate

open access: yesItalian Journal of Animal Science, 2010
The orexins A and B are two peptides discovered initially in the rat lateral hypothalamus involved in the regulation of some body functions such as food intake, sleep/wake cycle, arterial pressure and heart rate. They interact with two receptors defined &
A. Vittoria, F. Russo, G. Petrosino
doaj   +1 more source

Evolution of Orexin Neuropeptide System: Structure and Function

open access: yesFrontiers in Neuroscience, 2020
Orexins are hypothalamic neuropeptides that were initially identified in the rat brain as endogenous ligands for an (previously) orphan G-protein-coupled receptor (GPCR).
Shingo Soya, Takeshi Sakurai
doaj   +1 more source

Orexin-A and Orexin-B During the Postnatal Development of the Rat Brain [PDF]

open access: yesCellular and Molecular Neurobiology, 2009
Orexin-A and orexin-B are hypothalamic neuropeptides isolated from a small group of neurons in the hypothalamus, which project their axons to all major parts of the central nervous system. Despite the extensive information about orexin expression and function at different parts of the nervous system in adults, data about the development and maturation ...
Stoyanova, Irina   +2 more
openaire   +3 more sources

Hypothalamic kinin B1 receptor mediates orexin system hyperactivity in neurogenic hypertension

open access: yesScientific Reports, 2021
Brain orexin system hyperactivity contributes to neurogenic hypertension. We previously reported upregulated neuronal kinin B1 receptor (B1R) expression in hypertension.
Rohan Umesh Parekh   +6 more
doaj   +1 more source

Orexin-a elevation in antipsychotic-treated compared to drug-free patients with schizophrenia: A medication effect independent of metabolic syndrome

open access: yesJournal of the Formosan Medical Association, 2022
Background/Purpose: Orexin-A levels are reportedly increased in antipsychotic (APD)-treated patients with schizophrenia compared to healthy controls and have been associated with metabolic abnormalities.
Po-Yu Chen   +8 more
doaj   +1 more source

Common carp (Cyprinus carpio) orexin: Molecular identification, tissue expression, and the role of Orexin-A in glucose metabolism

open access: yesAquaculture Reports, 2020
Orexins are neuropeptides involved in energy homeostasis. In fish, the function of orexin-A in glucose metabolism is less reported. The present study aims to identify the potential role of orexin-A in the glucose absorption and metabolism in common carp.
Liping Yang   +8 more
doaj   +1 more source

Dexamethasone Chemotherapy Does Not Disrupt Orexin Signaling. [PDF]

open access: yesPLoS ONE, 2016
Steroid-induced sleep disturbance is a common and highly distressing morbidity for children receiving steroid chemotherapy for the treatment of pediatric acute lymphoblastic leukemia (ALL). Sleep disturbance can negatively impact overall quality of life,
David E Kram   +5 more
doaj   +1 more source

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