Results 31 to 40 of about 111,103 (336)

Direct imaging of lateral movements of AMPA receptors inside synapses [PDF]

EMBO J 22, 18 (15/09/2003) 4656-65, 2007
Trafficking of AMPA receptors in and out of synapses is crucial for synaptic plasticity. Previous studies have focused on the role of endo/exocytosis processes or that of lateral diffusion of extra-synaptic receptors. We have now directly imaged AMPAR movements inside and outside synapses of live neurons using single-molecule fluorescence microscopy ...
arxiv   +1 more source

TRPV1-expressing primary afferents generate behavioral responses to pruritogens via multiple mechanisms [PDF]

, 2009
The mechanisms that generate itch are poorly understood at both the molecular and cellular levels despite its clinical importance. To explore the peripheral neuronal mechanisms underlying itch, we assessed the behavioral responses (scratching) produced ...
A. I. Basbaum, Andrew, Cao, Caterina, Costa, D. J. Anderson, Davidson, Endoh, G. H. Park, H. Lee, Ikoma, Johanek, Johanek, Katanosaka, LaMotte, Lee, M. I. Simon, Mackenzie, N. Imamachi, Nicholson, Paus, Reddy, S.-K. Han, Schepers, Schmelz, Shim, Simone, Sommer, Sun, Twycross, Uemura, Woo, Zeitz   +32 more
core   +2 more sources

H3 histamine receptor-mediated activation of protein kinase calpha inhibits the growth of cholangiocarcinoma in vitro and in vivo [PDF]

, 2009
Histamine regulates functions via four receptors (HRH1, HRH2, HRH3, and HRH4). The D-myo-inositol 1,4,5-trisphosphate (IP(3))/Ca(2+)/protein kinase C (PKC)/mitogen-activated protein kinase pathway regulates cholangiocarcinoma growth.
A. Vetuschi, F. Y. Meng, FRANCHITTO, Antonio, G. Alpini, G. Carpino, GAUDIO, EUGENIO, H. Francis, J. Venter, M. White, MANCINELLI, ROMINA, ONORI, PAOLO, R. Sferra, S. Demorrow, S. Kopriva   +13 more
core   +1 more source

Histamine 2/3 receptor agonists alleviate perioperative neurocognitive disorders by inhibiting microglia activation through the PI3K/AKT/FoxO1 pathway in aged rats

Journal of Neuroinflammation, 2020
Background Microglia, the principal sentinel immune cells of the central nervous system (CNS), play an extensively vital role in neuroinflammation and perioperative neurocognitive disorders (PND).
Yi-Nan Chen, Huan-Huan Sha, Yi-Wei Wang, Qin Zhou, Piplu Bhuiyan, Na-Na Li, Yan-Ning Qian, Hong-Quan Dong   +7 more
doaj   +1 more source

Function and Role of Histamine H₁ Receptor in the Mammalian Heart

Pharmaceuticals, 2023
Histamine can change the force of cardiac contraction and alter the beating rate in mammals, including humans. However, striking species and regional differences have been observed. Depending on the species and the cardiac region (atrium versus ventricle)
Joachim Neumann, Britt Hofmann, Uwe Kirchhefer, Stefan Dhein, Ulrich Gergs   +4 more
doaj   +1 more source

Diets high in heat-treated soybean meal reduce the histamine-induced epithelial response in the colon of weaned piglets and increase epithelial catabolism of histamine. [PDF]

PLoS ONE, 2013
We examined the influence of dietary fermentable protein (fCP) and fermentable carbohydrates (fCHO) on the colonic epithelial response to histamine in pigs. Thirty-two weaned piglets were fed 4 diets in a 2 × 2 factorial design with low fCP/low fCHO, low
Susan Kröger, Robert Pieper, Hubert G Schwelberger, Jing Wang, Carmen Villodre Tudela, Jörg R Aschenbach, Andrew G Van Kessel, Jürgen Zentek   +7 more
doaj   +1 more source

Large number of receptors may reduce cellular response time variation [PDF]

Physical biology 10 (3), 035008, 2013, 2012
Cells often have tens of thousands of receptors, even though only a few activated receptors can trigger full cellular responses. Reasons for the overabundance of receptors remain unclear. We suggest that, in certain conditions, the large number of receptors results in a competition among receptors to be the first to activate the cell.
arxiv   +1 more source

Platelet-Activating Factor-Induced Reduction in Contact Hypersensitivity Responses Is Mediated by Mast Cells via Cyclooxygenase-2-Dependent Mechanisms [PDF]

, 2018
Platelet-activating factor (PAF) stimulates numerous cell types via activation of the G protein-coupled PAF receptor (PAFR). PAFR activation not only induces acute proinflammatory responses, but it also induces delayed systemic immunosuppressive effects ...
FitzGerald, Garret A., Kaplan, Mark H., Ocana, Jesus A., Pawelzik, Sven-Christian, Romer, Eric, Sahu, Ravi, Travers, Jeffrey B.   +6 more
core   +1 more source

Effects of methimepip and JNJ-5207852 in Wistar rats exposed to an open-field with and without object and in Balb/c mice exposed to a radial-arm maze [PDF]

, 2012
The role of the histamine H3 receptor (H3R) in anxiety is controversial, due to limitations in drug selectivity and limited validity of behavioral tests used in previous studies. In the present report, we describe two experiments.
Abuhamdah, Rushdie M., Chazot, Paul L., Ennaceur, Abdelkader, Lethbridge, Natasha L., van Rensburg, Ruan   +4 more
core   +1 more source

Effect of the Fexofenadine on the expression of HRH-1 and HRH-4 receptor in Peripheral Blood Mononuclear Cell isolated from children with diagnosed allergy – in vitro study Short communication

Journal of Pharmacy & Pharmaceutical Sciences, 2019
Purpose: Fexofenadine (FXF) is the active metabolite of terfenadine with selective peripheral H1 receptor antagonist activity. FXF is a third-generation antihistamine, non-sedating, rapid and very long acting used in symptoms associated with allergic ...
Natalia Kordulewska, Anna Cieślińska, Ewa Fiedorowicz, Beata Jarmołowska, Elżbieta Kostyra   +4 more
doaj   +1 more source