نتایج جستجو برای: nk1r

تعداد نتایج: 208  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2008
Jian-Ping Lai Saien Lai Florin Tuluc Morris F Tansky Laurie E Kilpatrick Susan E Leeman Steven D Douglas

The neurokinin-1 receptor (NK1R) has two naturally occurring forms that differ in the length of the carboxyl terminus: a full-length receptor consisting of 407 aa and a truncated receptor consisting of 311 aa. We examined whether there are differential signaling properties attributable to the carboxyl terminus of this receptor by using stably transfected human embryonic kidney (HEK293) cell lin...

2013
Laura E Goldsmith Madan M Kwatra

Neurokinin-1 receptor (NK1R), or substance P receptor, is a G protein-coupled receptor (GPCR) that transmits the signal of substance P (SP) and other tachykinins. Upon stimulation by its agonist SP, NK1R has been shown to interact with multiple G proteins, including Gs, Gq/11, Gi/o, G12, and G13. NK1R undergoes a rapid agonist-dependent desensitization, which is mediated by members of G protein...

2016
Xiao-Yi Chen Guo-Qing Ru Ying-Yu Ma Jun Xie Wan-Yuan Chen Hui-Ju Wang Shi-Bing Wang Li Li Ke-Tao Jin Xiang-Lei He Xiao-Zhou Mou

BACKGROUND Epidemiologic evidence suggests that chronic inflammation and/or chronic infection is associated with cancer development, and the inflammatory process may play a crucial role in the carcinogenesis and prognosis of colorectal cancer (CRC). Substance P (SP) belongs to the family of tachykinins and acts as an immunomodulator, binding to the neurokinin-1 receptor (NK1R) to initiate tumor...

2015
A J Porter K Pillidge Y C Tsai J A Dudley S P Hunt S N Peirson L A Brown S C Stanford

Mice lacking functional neurokinin-1 receptors (NK1R-/-) display abnormal behaviours seen in Attention Deficit Hyperactivity Disorder (hyperactivity, impulsivity and inattentiveness). These abnormalities were evident when comparing the behaviour of separate (inbred: 'Hom') wildtype and NK1R-/- mouse strains. Here, we investigated whether the inbreeding protocol could influence their phenotype b...

Journal: :The European respiratory journal 2003
K G Tournoy K O De Swert P G Leclere R A Lefebvre R A Pauwels G F Joos

The role of the NK1 receptor in airway contraction induced by electrical field stimulation (EFS) was evaluated by comparing the response in NK1 receptor knockout mice (NK1R-/-) with that of NK1 receptor wild-type controls (WT). A frequency/response curve on tracheas from NK1R-/- mice and NK1R WT littermates was constructed. After incubation with [3H]choline, [3H]acetylcholine release upon EFS w...

2011
Ting Carrie Yan Julia A. Dudley Ruth K. Weir Ewelina M. Grabowska Yolanda Peña-Oliver Tamzin L. Ripley Stephen P. Hunt David N. Stephens S. Clare Stanford

BACKGROUND The neurochemical status and hyperactivity of mice lacking functional substance P-preferring NK1 receptors (NK1R-/-) resemble abnormalities in Attention Deficit Hyperactivity Disorder (ADHD). Here we tested whether NK1R-/- mice express other core features of ADHD (impulsivity and inattentiveness) and, if so, whether they are diminished by d-amphetamine, as in ADHD. Prompted by eviden...

Journal: :Neuropharmacology 2009
Ting C Yan Stephen P Hunt S Clare Stanford

In rodent behavioural screens, such as the forced swim or resident/intruder tests, the behaviour of mice that lack functional substance P-preferring, tachykinin-1 receptors ((NK1R) either through drug antagonism or gene ablation) mimics that of wildtype mice that have been treated with an antidepressant drug. All antidepressants modify the function of monoamine-releasing neurones in the brain. ...

2012
Yung-Hua Koh Shabbir Moochhala Madhav Bhatia

Acute pancreatitis (AP) has been associated with an up-regulation of substance P (SP) and neurokinin-1 receptor (NK1R) in the pancreas. Increased SP-NK1R interaction was suggested to be pro-inflammatory during AP. Previously, we showed that caerulein treatment increased SP/NK1R expression in mouse pancreatic acinar cells, but the effect of SP treatment was not evaluated. Pancreatic acinar cells...

Journal: :Neuroimmunomodulation 2013
Sergei Spitsin Florin Tuluc John Meshki Jian Ping Lai Richard Tustin Iii Steven D Douglas

OBJECTIVES Vapreotide, a synthetic analog of somatostatin, has analgesic activity most likely mediated through the blockade of neurokinin-1 receptor (NK1R), the substance P (SP)-preferring receptor. The ability of vapreotide to interfere with other biological effects of SP has yet to be investigated. METHODS We studied the ability of vapreotide to antagonize NK1R in three different cell types...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1998
M Bhatia A K Saluja B Hofbauer J L Frossard H S Lee I Castagliuolo C C Wang N Gerard C Pothoulakis M L Steer

Substance P, acting via the neurokinin 1 receptor (NK1R), plays an important role in mediating a variety of inflammatory processes. However, its role in acute pancreatitis has not been previously described. We have found that, in normal mice, substance P levels in the pancreas and pancreatic acinar cell expression of NK1R are both increased during secretagogue-induced experimental pancreatitis....

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