Results 71 to 80 of about 29,139 (279)

Pharmacological receptors of nematoda as target points for action of antiparasitic drugs [PDF]

Veterinarski Glasnik, 2010
Cholinergic receptors of parasitic nematodes are one of the most important possible sites of action of antiparasitic drugs. This paper presents some of our own results of electrophysiological and pharamcological examinations of nicotinic and muscarinic ...
Trailović Saša M., Ivanović Saša R., Trailović-Nedeljković Jelena, Robertson Alan P.   +3 more
doaj   +1 more source

A physical model of nicotinic ACh receptor kinetics [PDF]

arXiv, 2008
We present a new approach to nicotinic receptor kinetics and a new model explaining random variabilities in the duration of open events. The model gives new interpretation on brief and long receptor openings and predicts (for two identical binding sites) the presence of three components in the open time distribution: two brief and a long.
arxiv  

Structural determinants at the M2 muscarinic receptor modulate the RGS4-GIRK response to pilocarpine by impairment of the receptor voltage sensitivity

Scientific Reports, 2017
Membrane potential controls the response of the M2 muscarinic receptor to its ligands. Membrane hyperpolarization increases response to the full agonist acetylcholine (ACh) while decreasing response to the partial agonist pilocarpine.
I-Shan Chen, Kazuharu Furutani, Yoshihisa Kurachi   +2 more
doaj   +1 more source

The Channel Capacity of Channelrhodopsin and Other Intensity-Driven Signal Transduction Receptors [PDF]

arXiv, 2018
Biological systems transduce signals from their surroundings through a myriad of pathways. In this paper, we describe signal transduction as a communication system: the signal transduction receptor acts as the receiver in this system, and can be modeled as a finite-state Markov chain with transition rates governed by the input signal.
arxiv  

Developing an international concept‐based curriculum for pharmacology education: The promise of core concepts and concept inventories

British Journal of Clinical Pharmacology, EarlyView.
Abstract Over recent years, studies have shown that science and health profession graduates demonstrate gaps in their fundamental pharmacology knowledge and ability to apply pharmacology concepts in practice. This article reviews the current challenges faced by pharmacology educators, including the exponential growth in discipline knowledge and ...
Clare Guilding, Roisin Kelly‐Laubscher, Adeladlew Netere, Anna‐Marie Babey, Carolina Restini, Margaret Cunningham, John P. Kelly, Jennifer Koenig, Kelly Karpa, Martin Hawes, Steven J. Tucker, Thomas A. Angelo, Paul J. White   +12 more
wiley   +1 more source

Untangling direct and domain-mediated interactions between nicotinic acetylcholine receptors in DHA-rich membranes [PDF]

arXiv, 2019
At the neuromuscular junction (NMJ), the nicotinic acetylcholine receptor (nAChR) self-associates to give rise to rapid muscle movement. While lipid domains have maintained nAChR aggregates in-vitro, their specific roles in nAChR clustering are currently unknown. In the present study, we carried out coarse-grained molecular dynamics simulations (CG-MD)
arxiv  

Microscopy and spectroscopy approaches to study GPCR structure and function

British Journal of Pharmacology, EarlyView.
Abstract The GPCR signalling cascade is a key pathway responsible for the signal transduction of a multitude of physical and chemical stimuli, including light, odorants, neurotransmitters and hormones. Understanding the structural and functional properties of the GPCR cascade requires direct observation of signalling processes in high spatial and ...
Tomáš Fessl, Maria Majellaro, Alexey Bondar   +2 more
wiley   +1 more source

Histological Protection by Donepezil Against Neurodegeneration Induced by Ischemia–Reperfusion in the Rat Retina

Journal of Pharmacological Sciences, 2010
Although a blockade of acetylcholine esterase has been reported to suppress neuronal cell death induced by exogenous glutamate and β-amyloid, information is still limited regarding the neuroprotective effects of the acetylcholine esterase inhibitor ...
Kenji Sakamoto, Kayo Ohki, Maki Saito, Tsutomu Nakahara, Kunio Ishii   +4 more
doaj  

Arrestin‐centred interactions at the membrane and their conformational determinants

British Journal of Pharmacology, EarlyView.
Abstract More than 30 years after their discovery, arrestins are recognised multiprotein scaffolds that play essential roles in G protein‐coupled receptor (GPCR) regulation and signalling. Originally named for their capacity to hinder GPCR coupling to G proteins and facilitate receptor desensitisation, arrestins have emerged as key hubs for a myriad of
Owen Underwood, Raphael Silvanus Haider, Julie Sanchez, Meritxell Canals   +3 more
wiley   +1 more source

Direct modulation of TRPC ion channels by Gα proteins

Frontiers in Physiology
GPCR-Gi protein pathways are involved in the regulation of vagus muscarinic pathway under physiological conditions and are closely associated with the regulation of internal visceral organs.
Hana Kang, Jinhyeong Kim, Christine Haewon Park, Byeongseok Jeong, Insuk So   +4 more
doaj   +1 more source