Results 71 to 80 of about 12,344 (239)

Selective loss of GABAB receptors in orexin/hypocretin-producing neurons results in disrupted sleep/wakefulness architecture [PDF]

, 2007
We generated mice with a selective loss of GABAB receptors in orexin neurons. Orexin neurons in these GABAB1^-/-(orexin) mice showed reduced responsiveness to GABA_A receptor agonists due to a ...
Ken-ichi Yagami, Bernard Bettler, Thomas Kilduff, Satoshi Kunita, Hitomi Takahira, Taizo Matsuki, Mika Nomiyama, Takeshi Sakurai, Noriko Hirashima, Satoru Takahashi, Masashi Yanagisawa   +10 more
core  

Ageing‐related modification of sleep and breathing in orexin‐knockout narcoleptic mice

Journal of Sleep Research, Volume 34, Issue 2, April 2025.
Summary Narcolepsy type‐1 (NT1) is a lifelong sleep disease, characterised by impairment of the orexinergic system, with a typical onset during adolescence and young adulthood. Since the wake–sleep cycle physiologically changes with ageing, this study aims to compare sleep patterns between orexin‐knockout (KO) and wild type (WT) control mice at ...
Stefano Bastianini, Sara Alvente, Chiara Berteotti, Viviana Lo Martire, Gabriele Matteoli, Elena Miglioranza, Alessandro Silvani, Giovanna Zoccoli   +7 more
wiley   +1 more source

Increased Number and Activity of a Lateral Subpopulation of Hypothalamic Orexin/Hypocretin Neurons Underlies the Expression of an Addicted State in Rats

bioRxiv, 2018
Background The orexin system is important for reward-driven motivation but has not been implicated in the expression of a multi-phenotype addicted state. Methods Rats were assessed for economic demand for cocaine prior to and following 14d of short- (ShA)
M. James, C. Stopper, Benjamin A. Zimmer, N. Koll, H. Bowrey, G. Aston-Jones   +5 more
semanticscholar   +1 more source

COVID‐19–Induced Narcolepsy Type I With Cataplexy: A Short Report

Journal of Sleep Research, EarlyView.
ABSTRACT Narcolepsy type I is a rare neurological sleep disorder characterised by chronic excessive daytime sleepiness, cataplexy, and low orexin (hypocretin) levels. Infection with SARS‐CoV‐2 has been linked to neurological and neuropsychiatric sequelae, but cases of post‐COVID narcolepsy remain extremely uncommon.
Torsten Vinding Merinder, Martin Langeskov‐Christensen, Filip Kirov   +2 more
wiley   +1 more source

Diagnostic Value of Psychomotor Vigilance Task for Severe Sleep Inertia in Idiopathic Hypersomnia Versus Other Sleep Disorders Without Sleep Inertia

Journal of Sleep Research, EarlyView.
Diagnostic Value of PVT for Severe Sleep Inertia in Idiopathic Hypersomnia. ABSTRACT Sleep inertia impairs performance upon awakening and may be assessed using the psychomotor vigilance task (PVT). This study aimed to determine optimal PVT lapse cut‐offs at awakening to objectively measure sleep inertia by comparing patients with idiopathic hypersomnia
Elisa Evangelista, Alexandre Derré, Lucie Barateau, Anna Laura Rassu, Sofiene Chenini, Isabelle Jaussent, Yves Dauvilliers   +6 more
wiley   +1 more source

Hypocretins: Waking, Arousal, or Action? [PDF]

Neuron, 2005
The role of hypocretin (orexin) neurotransmission in waking and arousal, though of intense interest, is poorly understood. In this issue of Neuron, demonstrate that, in general, hypocretin neurons are minimally active during both sleep and quiet waking. In contrast, these neurons display robust activity during periods of alert and/or active waking.
Berridge, Craig W., España, Rodrigo A.
openaire   +2 more sources

Postmortem Evidence of CRH Neuron Reduction in Narcolepsy Without Cataplexy With Borderline Hypocretin‐1 Levels

Journal of Sleep Research, EarlyView.
ABSTRACT Narcolepsy is classified as type 1 (NT1) or type 2 (NT2) mainly according to hypocretin deficiency rather than cataplexy. While CRH neuron loss in the PVN has been described in NT1, it remains unclear whether similar changes occur in narcolepsy without cataplexy.
Ling Shan, Suzan Linssen, Rolf Fronczek, Lucie Barateau, Christelle Peyron, Yves Dauvilliers   +5 more
wiley   +1 more source

The Orexin/Hypocretin Synapse

, 2014
The orexin/hypocretin synapse is shown including the synthesis of endogenous ligands, the application of synthetic antagonists and downstream signalling cascades of the orexin receptors.
Shaun Yon-Seng Khoo (459463)
core   +1 more source

The Lateral Hypothalamus: An Uncharted Territory for Processing Peripheral Neurogenic Inflammation

Frontiers in Neuroscience, 2020
The roles of the hypothalamus and particularly the lateral hypothalamus (LH) in the regulation of inflammation and pain have been widely studied. The LH consists of a parasympathetic area that has connections with all the major parts of the brain.
Marc Fakhoury, Israa Salman, Wassim Najjar, George Merhej, Nada Lawand, Nada Lawand   +5 more
doaj   +1 more source

Hypocretin and Human African Trypanosomiasis [PDF]

Sleep, 2008
To detail clinical and polysomnographic characteristics in patients affected with Trypanosoma brucei gambiense (Tb.g.) human African trypanosomiasis (HAT) at different stages of evolution and to measure and compare cerebrospinal fluid (CSF) levels of hypocretin-1 with narcoleptic patients and neurologic controls.Twenty-five untreated patients affected ...
Yves, Dauvilliers, Sylvie, Bisser, Florian, Chapotot, Gedeao, Vatunga, Raymond, Cespuglio, Téofilo, Josenando, Alain, Buguet   +6 more
openaire   +2 more sources