Results 71 to 80 of about 12,064 (247)

Structure and function of potassium and calcium channels [PDF]

, 2005
In this thesis, potassium channels human Kv2.1 and rat Kv2.1, along with calcium channels Ca, 1.2, Ca, 3.1, and chimeras have been studied. These channels were expressed in Xenopuso ocytesf or electrophysiological experiments using two electrode voltage
Stevens, Louisa Rebecca
core  

Remodelling of human atrial K+ currents but not ion channel expression by chronic β-blockade [PDF]

, 2011
Chronic β-adrenoceptor antagonist (β-blocker) treatment in patients is associated with a potentially anti-arrhythmic prolongation of the atrial action potential duration (APD), which may involve remodelling of repolarising K+ currents.
Currie, S., Tellez, James O, Julie A. Russell, Kane, Kathleen A, Jhund, Pardeep S, Boyett, M.R., Rankin, A.C., Pardeep S. Jhund, Mark R. Boyett, Dempster, John, Marshall, Gillian E., John Dempster, Currie, Susan, Russell, J.A., Workman, Antony J., Marshall, Gillian E, Workman, A.J., Marshall, G.E., Russell, Julie A, Dempster, J., Rankin, Andrew C, Russell, Julie A., Gillian E. Marshall, Tellez, James O., Boyett, Mark R, Kathleen A. Kane, Boyett, Mark R., Andrew C. Rankin, Rankin, Andrew C., Kane, K.A., Workman, Antony J, Tellez, J.O., Antony J. Workman, Kane, Kathleen A., Jhund, P.S., Susan Currie, James O. Tellez, Jhund, Pardeep S.   +37 more
core   +1 more source

Kcnj16 knockout produces audiogenic seizures in the Dahl salt-sensitive rat

JCI Insight, 2021
Kir5.1 is an inwardly rectifying potassium (Kir) channel subunit abundantly expressed in the kidney and brain. We previously established the physiologic consequences of a Kcnj16 (gene encoding Kir5.1) knockout in the Dahl salt-sensitive rat (SSKcnj16–/–),
Anna D. Manis, Oleg Palygin, Elena Isaeva, Vladislav Levchenko, Peter S. LaViolette, Tengis S. Pavlov, Matthew R. Hodges, Alexander Staruschenko   +7 more
doaj   +1 more source

GIRK Channels as Candidate Targets for the Treatment of Substance Use Disorders

Biomedicines, 2022
Substance use disorders (SUDs) are chronic, lifelong disorders that have serious consequences. Repeated substance use alters brain function. G-protein-activated inwardly rectifying potassium (GIRK) channels are expressed widely in the brain, including ...
Hiroko Kotajima-Murakami, Soichiro Ide, Kazutaka Ikeda   +2 more
doaj   +1 more source

The Role of Neuropeptide Y in Dental Pulp: Balancing Neurogenic Inflammation and Pain Modulation

International Endodontic Journal, EarlyView.
ABSTRACT Background Dental pulp is a densely innervated, low‐compliance tissue in which neurogenic inflammation can rapidly escalate into oedema, raised intrapulpal pressure, microvascular compromise, and pain. While Substance P (SP) and Calcitonin gene‐related peptide (CGRP) are well‐established drivers of pulp vasodilation, the Neuroopeptide Y (NPY ...
Javier Caviedes‐Bucheli, Esteban Ulate, Hugo‐Roberto Munoz, Nestor Ríos‐Osorio   +3 more
wiley   +1 more source

Gi/o protein-coupled receptors in dopamine neurons inhibit the sodium leak channel NALCN

eLife, 2018
Dopamine (D2) receptors provide autoinhibitory feedback onto dopamine neurons through well-known interactions with voltage-gated calcium channels and G protein-coupled inwardly-rectifying potassium (GIRK) channels.
Fabian Philippart, Zayd M Khaliq
doaj   +1 more source

Computational Tools for Interpreting Ion Channel pH-Dependence. [PDF]

PLoS ONE, 2015
Activity in many biological systems is mediated by pH, involving proton titratable groups with pKas in the relevant pH range. Experimental analysis of pH-dependence in proteins focusses on particular sidechains, often with mutagenesis of histidine, due ...
Ivan Sazanavets, Jim Warwicker
doaj   +1 more source

Arctic lake trout (Salvelinus namaycush) show evidence of seasonal acclimation of cardiac adrenergic sensitivity but not heat tolerance

Journal of Fish Biology, EarlyView.
Abstract Many Arctic fishes experience prolonged periods of extreme cold and large thermal variation over both rapid and seasonal time scales which challenge critical physiological functions. In the central Canadian Arctic, we caught wild adult lake trout (Salvelinus namaycush) acclimatized to winter and summer temperatures to determine the extent to ...
Emily P. Williams, Les N. Harris, Jean‐Sébastien Moore, Ella K. Middleton, Shira A. Berkelhammer, Ben Speers‐Roesch, Matthew J. H. Gilbert   +6 more
wiley   +1 more source

CO2‐sensitive K+ channel traffic affects stomata and whole‐plant water use

Journal of Integrative Plant Biology, EarlyView.
CO2‐responsive regulation of membrane trafficking influences the density of the potassium ion (K+) channel KAT1 at the plasma membrane. CO2‐sensitive traffic, dependent on trafficking by the SNARE SYP121, impacts stomatal gas exchange and plant growth.
Zhiyi Yu, Sakharam Waghmare, Sahar Farami, Michael R. Blatt, Rucha Karnik   +4 more
wiley   +1 more source

Inhibition of Inwardly Rectifying Potassium (Kir) 4.1 Channels Facilitates Brain-Derived Neurotrophic Factor (BDNF) Expression in Astrocytes

Frontiers in Molecular Neuroscience, 2017
Inwardly rectifying potassium (Kir) 4.1 channels in astrocytes regulate neuronal excitability by mediating spatial potassium buffering. Although dysfunction of astrocytic Kir4.1 channels is implicated in the development of epileptic seizures, the ...
Masato Kinboshi, Masato Kinboshi, Masato Kinboshi, Takahiro Mukai, Yuki Nagao, Yusuke Matsuba, Yoshimi Tsuji, Shiho Tanaka, Kentaro Tokudome, Kentaro Tokudome, Saki Shimizu, Hidefumi Ito, Akio Ikeda, Atsushi Inanobe, Yoshihisa Kurachi, Seiji Inoue, Yukihiro Ohno   +16 more
doaj   +1 more source