katp channels

Tifenazoxide is an effective and SUR1/Kir6.2 selective KATP channels opener. Tifenazoxide has an anti-diabetic effect, can inhibit glucose-stimulated insulin release in vitro and in vivo.

Aprikalim (RP 52891) is an adenosine triphosphate potassium channel (KATP) opener that protects against nerve damage in a rabbit model of spinal cord ischemia.Aprikalim inhibits vasoconstriction and inhibits the elevation of [Ca2+]i during myocardial paralysis, and can be used to study cardiovascular disease.

Nicorandil (SG-75)(Ikorel) acts by relaxing the smooth muscle of the blood vessels, especially those of the venous system. It undertakes this through two methods. Firstly, by activating potassium channels, and secondly by donating nitric oxide to activate the enzyme guanylate cyclase. Guanylate cyclase causes activation of cGMP leading to both arterial and venous vasodilatation by de-phosphorylation of the myosin light chain.

Amiodarone hydrochloride is an anti-anginal agent and a class III antiarrhythmic drug that inhibits potassium channels (including wild-type hERG channels and their tail currents, with an IC₅₀ of approximately 45 nM) as well as voltage-gated sodium channels. This leads to prolonged action potential duration in ventricular and atrial myocytes, resulting in reduced heart rate and vascular resistance. It activates ERK1/2 and p38 MAPK signaling pathways in fibroblasts, promoting cell proliferation and myofibroblast differentiation. Amiodarone hydrochloride is widely used in the study of supraventricular and ventricular arrhythmias and can also be used to establish pulmonary fibrosis animal models.

Mitiglinide calcium hydrate (S-21403 calcium hydrate) is a drug for the treatment of type 2 diabetes. Mitiglinide is thought to stimulate insulin secretion by closing the ATP-sensitive K(+) K(ATP) channels in pancreatic beta-cells. Mitiglinide belongs to the meglitinide class of blood glucose-lowering drugs and is currently co-marketed in Japan by Kissei and Takeda.

Polydatin (Piceid), the glycoside of Resveratrol, is originally isolated from the Chinese herb Polygonum cuspidatum. The compound can inhibit platelet aggregation and elevate the ratios of LDL-C/HDL-C and TC/HDL-C. In the myocardial cell, white blood cell, vascular smooth muscle cell, and endothelial cell, Polydatin can inhibit ICAM-1 expression, elevate Ca2+, weaken white blood cell-endothelial cell adhesion, and activate KATP channels.

Hydroxyhexamide ((±)-Hydroxyhexamid) is a pharmacologically active metabolite of Acetohexamide, used as a hypoglycemic agent.

Glibornuride, a blocker of ATP-sensitive K+ channels (pKi: 5.75), inhibits high-affinity [3H]-glibenclamide binding with potencies corresponding to its K+ channel activity.

KRN 4884 is an opener of the K+ channel. KRN 4884 (0.1-3 μM) activates KATP channels in a concentration-dependent manner (EC50=0.55 μM), in the presence of intracellular ATP (1 mM).

Cibenzolinesuccinate (Cifenline succinate) is the succinate salt form of Cibenzoline. It serves as an inhibitor of ATP-sensitive potassium channels (KATP), affecting the Kir6.2 subunit, with an IC50 of 22.2 µM. This compound influences insulin secretion and exhibits both antiarrhythmic and antidiabetic properties.

ATB-429 is a mesalazine derivative capable of releasing H2S, demonstrating significant analgesic and anti-inflammatory effects in an irritable bowel syndrome (IBS) model. By releasing hydrogen sulfide (H2S), ATB-429 modulates hypersensitivity induced by colorectal distension in healthy and post-colitis rats. It alleviates abdominal withdrawal responses and inhibits spinal c-Fos mRNA expression, indicating its potential to relieve pain associated with gastrointestinal inflammation. Furthermore, ATB-429 downregulates mRNA expression of colonic cyclooxygenase-2 (COX-2) and IL-1β, an effect not observed with mesalazine alone. The mechanism involves ATP-sensitive K+ (KATP) channels, evidenced by the reversal of ATB-429's effects with glibenclamide. These findings suggest that ATB-429 may offer therapeutic benefits for treating inflammatory pain-related bowel conditions.

5-Hydroxydecanoate sodium is a selective ATP-sensitive K+ (KATP) channel blocker with an IC50 of approximately 30 μM and a substrate for mitochondrial outer membrane acyl-CoA synthetase, possessing antioxidant properties.

Non-hydrolyzable AMP analog. Kir6 (KATP) channel blocker. Inhibits fast axonal transport and stabilizes the interaction of membranous organelles with microtubules. Brady (1985) A novel brain ATPase with properties expected for the fast axonal transport motor. Nature 317 73 PMID:2412134 |Yount et al (1971) Adenylyl imidodiphosphate, an adenosine triphosphate analog containing a P-N-P linkage. Biochemistry 10 2484 PMID:4326768 |Hehl and Neumcke (1994) KATP channels of mouse skeletal muscle: mechanism of channel blockage by AMP-PNP. Eur.Biophys.J. 23 231 PMID:7805625

Bepridil hydrochloride (CERM 1978) is a calcium channel blocker that also inhibits Na+/Ca2+ exchange (NCX), sodium channels, and cardiac sarcolemmal KATP channels.

Mitiglinide Calcium (KAD-1229) is a blood glucose-lowering drugs, stimulating insulin secretion by closing the ATP-sensitive K+ channels in pancreatic beta-cells.

Gliclazide-d4 is intended for use as an internal standard for the quantification of gliclazide by GC- or LC-MS. Gliclazide is a sulfonylurea and an inhibitor of pancreatic β-cell ATP-sensitive potassium (KATP) channels. It is selective for pancreatic β-cell over cardiac and arterial smooth muscle cell KATP channels. Gliclazide (5 μM) increases insulin-induced glucose uptake and glucose transporter 4 (GLUT4) translocation to the plasma membrane in a differentiated 3T3L1 adipocyte model of insulin resistance induced by hydrogen peroxide. Gliclazide (5 and 10 μg/ml) reduces LDL oxidation by human aortic smooth muscle cells (HASMCs), decreasing TBARS content and 8-isoprostane levels. It also decreases oxidized LDL-induced HASMC proliferation and monocyte adhesion when used at concentrations ranging from 1 to 10 μg/ml. Gliclazide (5 mg/kg) reduces serum glucose levels and increases glucose uptake by isolated rat hindquarters in a model of diabetes induced by streptozotocin (STZ).

VU0542270 is a selective inhibitor of vascular Kir6.1/SUR2B KATP channels, exhibiting an IC50 value of 100 nM, suitable for use in cardiovascular disease research [1].

Lupanine ((+)-Lupanine), a naturally occurring quinolizidine alkaloid, potently affinity and activates nicotinic acetylcholine receptor (nAChR) (Ki=500 nM), and shows significant neuroprotection against soluble amyloid β-oligomers (SO-Aβ) toxicity in cellular models in association with the anti-apoptotic PI3K/ Akt/Bcl-2 signaling pathway with anti-Alzheimer's disease potential. Improves glucose homeostasis by affecting KATP channels and enhancing insulin secretion with therapeutic potential for type 2 diabetes.

Levcromakalim (BRL 38227) is an activator of the ATP-sensitive K+ channel.