Results 31 to 40 of about 654,231 (380)
An alpha-catulin homologue controls neuromuscular function through localization of the dystrophin complex and BK channels in Caenorhabditis elegans. [PDF]
PLoS Genetics, 2010 The large conductance, voltage- and calcium-dependent potassium (BK) channel serves as a major negative feedback regulator of calcium-mediated physiological processes and has been implicated in muscle dysfunction and neurological disorders.
Linu S Abraham +4 more
doaj +1 more source
Particle-based Multiscale Modeling of Calcium Puff Dynamics [PDF]
Multiscale Model. Simul. 14, 997-1016 (2016), 2015 Intracellular calcium is regulated in part by the release of Ca$^{2+}$ ions from the endoplasmic reticulum via inositol-4,5-triphosphate receptor (IP$_3$R) channels (among other possibilities such as RyR and L-type calcium channels). The resulting dynamics are highly diverse, lead to local calcium "puffs" as well as global waves propagating through ...
arxiv +1 more source
Catechol estrogens stimulate insulin secretion in pancreatic β-cells via activation of the transient receptor potential A1 (TRPA1) channel [PDF]
, 2019 Estrogen hormones play an important role in controlling glucose homeostasis and pancreatic β-cell function. Despite the significance of estrogen hormones for regulation of glucose metabolism, little is known about the roles of endogenous estrogen ...
Cabrera, Over +7 more
core +1 more source
Activation of Calcium Channels
Biophysical Journal, 1984 Activation of Ca channels has been described as a Hodgkin-Huxley process in which the time constants have ratios of two or greater (1, 2, 3) or as a three-state linear sequential process with two very different time constants (4). We examined activation by measuring the turn-on and turn-off of macroscopic Ca currents and the discharge of single Ca ...
Arthur Brown +2 more
openaire +3 more sources
Mitogens and Calcium Channels [PDF]
Physiology, 1997 Mitogens and, in particular, growth factors can induce changes in free intracellular Ca2+ concentration by opening voltage-independent cationic channels, with different degrees of Ca2+ selectivity. Recent work has provided preliminary insights into the nature of these channels and their role in the control of cell cycle progression.
LOVISOLO, Davide +3 more
openaire +3 more sources
Human sperm ion channel (dys)function:implications for fertilization [PDF]
, 2019 BACKGROUND: Intensive research on sperm ion channels has identified members of several ion channel families in both mouse and human sperm. Gene knock-out studies have unequivocally demonstrated the importance of the calcium and potassium conductances in ...
Barratt, Christopher L. R. +3 more
core +3 more sources
Medicine, 2003 Overdose of calcium channel blockers is potentially lethal. Verapamil and diltiazem are much more dangerous than dihydropyridines. Hypotension with (verapamil and diltiazem) or without (dihydropyridines) heart block and bradycardia are the most important features.
Ian M Whyte +5 more
openaire +3 more sources
Physiology, 2017 In this review article, we discuss the different gene products and translational variants of ORAI proteins and their contribution to the makeup of different native calcium-conducting channels with distinct compositions and modes of activation. We also review the different modes of regulation of these distinct calcium channels and their impact on ...
James W. Putney, Mohamed Trebak
openaire +2 more sources
43. Calmodulin regulating calcium sensitivity of Na channels
Journal of the Saudi Heart Association, 2016 By extrapolating information from existing research and observing previous assumptions regarding the structure of the Na Channel, this experiment was conducted under the hypothesis that the Na Channel is in part regulated by the calmodulin protein, as a ...
R. Vegiraju
doaj +1 more source
Biochimica et Biophysica Acta (BBA) - Biomembranes, 2000 We propose a model of calcium channels that can explain most of their observed properties, including the anomalous mole fraction effect and mutation of the glutamate residues. The structure grossly resembles that of the KcsA potassium channel except for the presence of an extracellular vestibule and a shorter selectivity filter containing four ...
Corry, Ben +3 more
openaire +4 more sources