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Orexin (/ ɒ ˈ r ɛ k s ɪ n /), also known as hypocretin, is a neuropeptide that regulates arousal, wakefulness, and appetite. [5] It exists in the forms of orexin-A and orexin-B.The most common form of narcolepsy, type 1, in which the individual experiences brief losses of muscle tone ("drop attacks" or cataplexy), is caused by a lack of orexin in the brain due to destruction of the cells ...
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 orexin receptor antagonist or SORA) or both (dual orexin receptor antagonis or DORA) of the orexin receptors, OX 1 and OX 2. [1] Medical applications include treatment of sleep disorders such as ...
An orexigenic, or appetite stimulant, is a drug, hormone, or compound that increases appetite and may induce hyperphagia.This can be a medication or a naturally occurring neuropeptide hormone, such as ghrelin, orexin or neuropeptide Y, [1] [2] which increases hunger and therefore enhances food consumption.
A major part of the study took place at the Providence Portland Medical Center.. The Oregon health insurance experiment (sometimes abbreviated OHIE) [1] was a research study looking at the effects of the 2008 Medicaid expansion in the U.S. state of Oregon, which occurred based on lottery drawings from a waiting list and thus offered an opportunity to conduct a randomized experiment by ...
Preclinical research has suggested that orexin antagonists may reduce appetite, but daridorexant and other orexin antagonists have not been associated with weight loss in clinical trials. [16] Daridorexant may have a small risk of suicidal ideation. [26] Orexin receptor antagonists can affect the reward system and produce drug-liking responses ...
The orexin receptor (also referred to as the hypocretin receptor) is a G-protein-coupled receptor that binds the neuropeptide orexin. There are two variants, OX 1 and OX 2 , each encoded by a different gene ( HCRTR1 , HCRTR2 ).
The same committee analyzed the effects of health insurance on adult's health outcomes: adults who do not have health insurance coverage who acquire Medicare coverage at age 65, experience substantially improved health and functional status, particularly those who have cardiovascular disease or diabetes.
SB-334867 is an orexin antagonist.It was the first non-peptide antagonist developed that is selective for the orexin receptor subtype OX 1, with around 50x selectivity for OX 1 over OX 2 receptors. [1]