Results 11 to 20 of about 19,368 (234)

Inwardly rectifying potassium channels

Current Opinion in Cell Biology, 1999
Inwardly rectifying potassium (Kir) channels regulate the resting membrane potential of the cell and thereby modulate the electrical activity of cardiac and neuronal cells, insulin secretion and epithelial K(+) transport. Considerable progress in understanding the molecular structure of Kir channels and the way in which they are regulated by ...
Reimann, F, Ashcroft, F
openaire   +3 more sources

Effects of cromakalim (BRL 34915) on potassium conductances in CA3 neurons of the guinea-pig hippocampus in vitro [PDF]

, 1989
The action of the potassium channel activator, cromakalim (BRL 34915), on membrane potential, input resistance and current-voltage-relationship of CA3 neurons in a slice preparation of the guinea-pig hippocampus was investigated by means of intracellular
Alzheimer, Christian, Sutor, Bernd, Ten Bruggencate, Gerrit   +2 more
core   +1 more source

Involvement of spinal G-protein inwardly rectifying potassium (GIRK) channels in the enhanced antinociceptive effects of the activation of both μ-opioid and cannabinoid CB1 receptors

Journal of Pharmacological Sciences, 2022
Neuropathic pain is refractory to opioid analgesics. Since there are functional linkages between μ-opioid receptors (MOR) and cannabinoid receptors (CBR), the present study was designed to investigate the interactions between MOR and CB1R based on ...
Yoshinori Takemura, Yuka Sudo, Tomoya Saeki, Shinji Kurata, Tsutomu Suzuki, Tomohisa Mori, Yasuhito Uezono   +6 more
doaj   +1 more source

Müller Glial Kir4.1 Channel Dysfunction in APOE4-KI Model of Alzheimer's Disease. [PDF]

Glia
APOE4 impairs Müller cell health by reducing Kir4.1 expression and buffering. APOE4 causes mitochondrial dysfunction with decreased ΔΨm and increased ROS. MitoQ restores Kir4.1 expression and reduces ROS in APOE4‐transfected cells. ABSTRACT Alzheimer's disease (AD), particularly late‐onset AD (LOAD), affects millions worldwide, with the apolipoprotein ...
Abhyankar SD, Xiao Y, Mahajan N, Luo Q, Cummins TR, Oblak AL, Lamb BT, Corson TW, Bhatwadekar AD.   +8 more
europepmc   +2 more sources

Intrinsic Gating Properties of a Cloned G Protein-activated Inward Rectifier K^+ Channel [PDF]

, 1995
The voltage-, time-, and K^+-dependent properties of a G protein-activated inwardly rectifying K^+ channel (GIRK1/KGA/Kir3.1) cloned from rat atrium were studied in Xenopus oocytes under two-electrode voltage clamp. During maintained G protein activation
Davidson, Norman, Doupnik, Craig A., Kofuji, Paulo, Lester, Henry A., Lim, Nancy F.   +4 more
core   +1 more source

Inwardly rectifying potassium channels mediate polymyxin-induced nephrotoxicity

Cellular and Molecular Life Sciences, 2022
AbstractPolymyxin antibiotics are often used as a last-line defense to treat life-threatening Gram-negative pathogens. However, polymyxin-induced kidney toxicity is a dose-limiting factor of paramount importance and can lead to suboptimal treatment. To elucidate the mechanism and develop effective strategies to overcome polymyxin toxicity, we employed ...
Jing Lu, Mohammad A. K. Azad, Julie L. M. Moreau, Yan Zhu, Xukai Jiang, Mary Tonta, Rachel Lam, Hasini Wickremasinghe, Jinxin Zhao, Jiping Wang, Harold A. Coleman, Luke E. Formosa, Tony Velkov, Helena C. Parkington, Alexander N. Combes, Joseph Rosenbluh, Jian Li   +16 more
openaire   +3 more sources

INWARD RECTIFIERS AND THEIR REGULATION BY ENDOGENOUS POLYAMINES

Frontiers in Physiology, 2014
Inwardly-rectifying potassium (Kir) channels contribute to maintenance of the resting membrane potential and regulation of electrical excitation in many cell types.
Victoria A Baronas, Harley Takatsuna Kurata   +1 more
doaj   +1 more source

HL-1 cells express an inwardly rectifying K+ current activated via muscarinic receptors comparable to that in mouse atrial myocytes [PDF]

, 2010
An inwardly rectifying K^+ current is present in atrial cardiac myocytes that is activated by acetylcholine (I_{KACh}). Physiologically, activation of the current in the SA node is important in slowing the heart rate with increased parasympathetic tone ...
A Benians, A Benians, A Benians, A Noma, AM Tolkovsky, Andrew Tinker, C Cifelli, C Marionneau, CE Ford, CL Huang, D Dobrev, D Dobrev, EN Nikolov, G Krapivinsky, I Riven, I Savelieva, J Gehrmann, JB Blumer, JL Leaney, JL Leaney, K Hu, K Wickman, L Sartiani, LC Mace, M Baruscotti, M Bechem, M Nobles, M Xia, M Yamada, MC Wellner-Kienitz, MD Drici, Muriel Nobles, N Lavine, N Voigt, O Wiser, Q Zhang, RB Robinson, S Fujita, S Peleg, SM Clancy, SM White, Sonia Sebastian, WA Boyle, WC Claycomb, Z Zuberi   +44 more
core   +2 more sources

Structural insights into GIRK2 channel modulation by cholesterol and PIP2

Cell Reports, 2021
Summary: G-protein-gated inwardly rectifying potassium (GIRK) channels are important for determining neuronal excitability. In addition to G proteins, GIRK channels are potentiated by membrane cholesterol, which is elevated in the brains of people with ...
Yamuna Kalyani Mathiharan, Ian W. Glaaser, Yulin Zhao, Michael J. Robertson, Georgios Skiniotis, Paul A. Slesinger   +5 more
doaj   +1 more source

A G protein-gated K channel is activated via beta 2-adrenergic receptors and G beta gamma subunits in Xenopus oocytes [PDF]

, 1995
In many tissues, inwardly rectifying K channels are coupled to seven- helix receptors via the Gi/Go family of heterotrimeric G proteins. This activation proceeds at least partially via G beta gamma subunits.
Dascal, Nathan, Davidson, Norman, Labarca, Cesar, Lester, Henry A., Lim, Nancy Fidler   +4 more
core   +2 more sources