Results 41 to 50 of about 20,070 (218)

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  

A rare genetic variant in the cleavage site of prepro-orexin is associated with idiopathic hypersomnia

npj Genomic Medicine, 2022
Idiopathic hypersomnia (IH) is a rare, heterogeneous sleep disorder characterized by excessive daytime sleepiness. In contrast to narcolepsy type 1, which is a well-defined type of central disorders of hypersomnolence, the etiology of IH is poorly ...
Taku Miyagawa, Susumu Tanaka, Mihoko Shimada, Noriaki Sakai, Kotomi Tanida, Nozomu Kotorii, Tatayu Kotorii, Yu Ariyoshi, Yuji Hashizume, Kimihiro Ogi, Hiroshi Hiejima, Takashi Kanbayashi, Aya Imanishi, Azusa Ikegami, Yuichi Kamei, Akiko Hida, Yamato Wada, Masayuki Miyamoto, Masanori Takami, Hideaki Kondo, Yoshiyuki Tamura, Yukari Taniyama, Naoto Omata, Tomoyuki Mizuno, Shunpei Moriya, Hirokazu Furuya, Mitsuhiro Kato, Kayoko Kato, Jun Ishigooka, Kazuhito Tsuruta, Shigeru Chiba, Naoto Yamada, Masako Okawa, Koichi Hirata, Kenji Kuroda, Kazuhiko Kume, Naohisa Uchimura, Masaaki Kitada, Tohru Kodama, Yuichi Inoue, Seiji Nishino, Kazuo Mishima, Katsushi Tokunaga, Makoto Honda   +43 more
doaj   +1 more source

Therapeutic Prospects of Ketamine for Cataplexy in Narcolepsy Type 1: Evidence from a Human Case and a Murine Model

Annals of Neurology, EarlyView.
Narcolepsy type 1 is characterized by cataplexy, for which current treatments targeting monoaminergic, histaminergic, and GABAergic pathways may be ineffective or poorly tolerated. We report the case of a 34‐year‐old man with narcolepsy type 1, intolerant to standard therapies, who experienced marked and sustained cataplexy reduction with morning ...
Francois Ricordeau, Sebastien Arthaud, Leila Langbour, Silvia Melzi, Aurelie Richard‐Mornas, Hannah Doudoux, Benjamin Rolland, Laure Peter‐Derex, Christelle Peyron   +8 more
wiley   +1 more source

Von In‐Silico bis In‐Cerebro – Entwicklung des Orexinrezeptor Antagonisten „Photorexant“ zur Photomodulation In Vitro und im Gehirn der Maus

Angewandte Chemie, EarlyView.
Durch einen strukturbasierten Designansatz wurden photoschaltbare Derivate des von der FDA zugelassenen Arzneistoffes Suvorexant entwickelt, gedockt, synthetisiert und pharmakologisch an den Orexin‐1‐ und 2‐Rezeptoren (OX1R und OX2R) charakterisiert.
Marcus Angermann, Marie H. Deventer, Vicente Ledesma‐Martin, Nuno Martinho, Alix Flake, Silvia Mori, Angel Nuñez, Jaime Pignatelli, Rita C. Guedes, Christophe P. Stove, Michael Decker   +10 more
wiley   +1 more source

Orexin-A Exerts Neuroprotective Effects via OX1R in Parkinson’s Disease

Frontiers in Neuroscience, 2018
Parkinson’s disease (PD) is a common neurodegenerative disorder characterized by progressive and selective death of dopaminergic neurons. Orexin-A is involved in many biological effects of the body.
Mei-Fang Liu, Mei-Fang Liu, Yan Xue, Cui Liu, Yun-Hai Liu, Hui-Ling Diao, Ying Wang, Yi-Peng Pan, Lei Chen   +8 more
doaj   +1 more source

In Silico to In Cerebro—Development of the Orexin Receptor Antagonist “Photorexant” for Photomodulation In Vitro and in Mouse Brains

Angewandte Chemie International Edition, EarlyView.
Following a structure‐based design approach, photoswitchable derivatives of the FDA‐approved drug suvorexant were designed, docked, synthesized, and characterized pharmacologically at the orexin 1 and 2 receptors (OX1R and OX2R). Optimized “photorexant” showed up to an 11‐fold difference in IC50 between photoisomers, enabled dynamic and reversible ...
Marcus Angermann, Marie H. Deventer, Vicente Ledesma‐Martin, Nuno Martinho, Alix Flake, Silvia Mori, Angel Nuñez, Jaime Pignatelli, Rita C. Guedes, Christophe P. Stove, Michael Decker   +10 more
wiley   +1 more source

Stress induces analgesia via orexin 1 receptor-initiated endocannabinoid/CB1 signaling in the mouse periaqueductal gray

, 2017
The orexin system consists of orexin A/hypocretin 1 and orexin B/hypocretin 2, and OX1 and OX2 receptors. Our previous electrophysiological study showed that orexin A in the rat ventrolateral periaqueductal gray (vlPAG) induced antinociception via an OX1
邱麗珠, Lee, Hsin-Jung;Chang, Lu-Yang;Ho, Yu-Cheng;Teng, Shu-Fang;Hwang, Ling-Ling;Mackie, Ken;Chiou, Lih-Chu   +1 more
core   +1 more source

Research progress on the mechanism of orexin in pain regulation in different brain regions

Open Life Sciences, 2021
Orexin is a neuropeptide that is primarily synthesized and secreted by the lateral hypothalamus (LH) and includes two substances derived from the same precursor (orexin A [OXA] and orexin B [OXB]).
Kang Xianhui, Tang Hongli, Liu Yao, Yuan Yan, Wang Mi   +4 more
doaj   +1 more source

Activation of orexin-2 receptors in the Kӧlliker-Fuse nucleus of anesthetized mice leads to transient slowing of respiratory rate

Frontiers in Physiology, 2022
Orexins are neuropeptides originating from the hypothalamus that serve broad physiological roles, including the regulation of autonomic function, sleep-wake states, arousal and breathing.
Adrienn G. Varga, Adrienn G. Varga, Jessica R. Whitaker-Fornek, Jessica R. Whitaker-Fornek, Sebastian N. Maletz, Erica S. Levitt, Erica S. Levitt   +6 more
doaj   +1 more source

Plasma and breast milk pharmacokinetics of suvorexant in healthy lactating women

British Journal of Clinical Pharmacology, EarlyView.
Aim This paper aims to evaluate the plasma and breast milk pharmacokinetics of suvorexant, an orexin receptor antagonist used to treat insomnia at a maximum dose of 20 mg, in healthy lactating women. Methods The paper reports on an open‐label Phase 1 study in 12 healthy lactating women.
Jacqueline McCrea, Andrew Litovsky, Prachi Wickremasingha, Nairita Ghosal, Brad Roadcap, Robert Valesky, Robin Lee, Leea D. Reed, Ming Wang, Wei Fang, Rebecca Wrishko   +10 more
wiley   +1 more source