k+ channel

Guanosine 5'-diphosphate (GDP) as Potential Iron Mobilizer, Preventing the Hepcidin-Ferroportin Interaction and Modulating the Interleukin-6/Stat-3 Pathway.

Isopulegol has antioxidant, and neuroactive properties. It also has gastroprotective effects induced by isopulegol appear to be mediated, at least in part, by endogenous prostaglandins, K+ATP channel opening and antioxidant proprieties related to GSH incr

Quinidine hydrochloride monohydrate is an optical isomer of quinine, extracted from the bark of the Cinchona tree and similar plant species. It prolongs cellular action potential and decreases automaticity. This alkaloid dampens the excitability of cardiac and skeletal muscles by blocking sodium and potassium currents across cellular membranes. Quinidine also blocks muscarinic and alpha-adrenergic neurotransmission.

Quinine is a natural cinchona alkaloid that has been used for centuries in the prevention and therapy of malaria. Quinine is also used for idiopathic muscle cramps. Quinine therapy has been associated with rare instances of hypersensitivity reactions which can be accompanied by hepatitis and mild jaundice.

2,2,2-Trichloroethanol, the active form of the sedative hypnotic drug chloral hydrate, is an agonist for the nonclassical K2P channels TREK-1 (KCNK2) and TRAAK (KCNK4). It activates a nonclassical potassium channel in cerebrovascular smooth muscle and dilates the middle cerebral artery [1]. [1]. Nikhil K Parelkar, et al. 2,2,2-trichloroethanol Activates a Nonclassical Potassium Channel in Cerebrovascular Smooth Muscle and Dilates the Middle Cerebral Artery. J Pharmacol Exp Ther. 2010 Mar;332(3):803-10.

Quinine hydrochloride dihydrate (Quinine HCl Dihydrate) is a white crystalline K+ channel blocker, used to treat malaria.

Paxilline is an indole alkaloid mycotoxin from *Penicillium paxilli*, acting as a potent BK channel inhibitor via an almost exclusively closed-channel block mechanism. Paxilline possesses significant anticonvulsant activity.

Ouabain octahydrate (Acocantherine) is a cardiac glycoside that inhibits Na(+)/K(+) ATPase. Ouabain octahydrate regulates transcription of MDR (increase, Pgp) and MRP (increase MRP1 and decrease CFTR, cyctic fibrosis transport receptor or cAMP-activated Cl- channel) genes, also alters localization of MRP1.

Quinidine is an antiarrhythmic agent. Quinidine is a potent, orally active, selective cytochrome P450db inhibitor. Quinidine is also a blocker of K + channel with an IC 50 of 19.9 μM. Quinidine has potential to be used for malaria research [1] [2] [3].

Paederosidic acid methyl ester has antinociception, is possibly related to the pathway of NO-cGMP-ATP sensitive K(+) channels.

1. Oleandrin (Folinerin), the principal cardiac glycoside component of PBI-524, can quantitatively account for regulation of BDNF at both the protein and transcriptional levels. 2. Oleandrin are known to inhibit the Na, K-ATPase pump, resulting in a consequent increase in calcium influx in heart muscle. 3. Oleandrin has stronger anti-proliferative activity in undifferentiated CaCO-2 cells (IC50, 8.25 nM) , causes an autophagic cell death and altered ERK phosphorylation in undifferentiated.

L-Palmitoylcarnitine TFA, a long-chain acylcarnitine and fatty acid metabolite, accumulates in the sarcolemma and disrupts the membrane lipid environment during ischemia. It inhibits K ATP channel activity by interacting with Kir6.2 without altering single-channel conductance [1].

Quinine hemisulfate hydrate, an alkaloid extracted from the cinchona tree bark, serves as an anti-malarial agent and potassium channel inhibitor. It specifically targets and inhibits WT mouse Slo3 (K Ca 5.1) channel currents induced by voltage pulses to +100 mV, having an IC 50 value of 169 μM [1] [2].

Chlorahololide C is a potent and selective potassium channel blocker, it exerts potent and selective inhibition on the delayed rectifier (I(K)) K(+) current with the IC(50) value of 3.6 + - 10.1 mu M.

Isopulegol presents depressant- and anxiolytic-like effects, it also has anticonvulsant and bioprotective effects against PTZ-induced convulsions are possibly related to positive modulation of benzodiazepine-sensitive GABAA receptors and to antioxidant properties.Isopulegol presents significant gastroprotective effects in both ethanol- and indomethacin-induced ulcer models, which appear to be mediated, at least in part, by endogenous prostaglandins, K(ATP) channel opening, and antioxidant properties.

Neolinine(at 10uM) shows significant hERG K+ channel inhibition activity.

Strophanthidin (Strophanthidine) can induce calcium overload in vivo.

Songoramine(10 uM) demonstrates significant hERG K+ channel inhibition.