patch-clamp

Cisapride (R 51619) 是一种5-HT4受体激动剂，还是 hERG 抑制剂。它可作用于肠道中的血清素受体，促进肠道蠕动，增加胃排空并减少食管反流。

VU0134992 hydrochloride 是一个亚型偏好的，具有口服活性和选择性的内向整流钾通道Kir4.1阻滞剂，IC50为 0.97 μM。在 -120 mV 时，VU0134992 hydrochloride 对同分 Kir4.1 比 Kir4.1 5.1 共分通道 (IC50=9 μM) 高出 9 倍的选择性。

NS3861 是烟碱型乙酰胆碱受体的激动剂，对α3β4 nAChR 具有高亲和力。能够分别与α3β4 (Ki:0.62 nM)、α3β2 (Ki:25 nM)、α4β4 (Ki:7.8 nM)、α4β2 (Ki:55 nM) 结合。

VU 0134992 是一个亚型偏好的，口服有效的和选择性的内向整流钾通道 Kir4.1阻滞剂，IC50为 0.97 μM。在 -120 mV 时，VU0134992对同分 Kir4.1 比 Kir4.1 5.1 共分通道 (IC50=9 μM) 高出 9 倍的选择性。

TRPV1-Tat是一种针对瞬时受体电位范烤苷1 (TRPV1) 的肽类拮抗剂。它由来自TRPV1的A-激酶锚蛋白(AKAP)结合域的736-745个氨基酸以及来自HIV Tat的细胞穿透肽序列组成。TRPV1-Tat (200 µM) 能够在使用初级小鼠背根神经节的整细胞膜片钳技术中抑制由热或棕榈酸酯12-肉豆蔻酸13-醋酸酯(PMA014)引起的电流。当以10或30 µM剂量给药时，它能增加大鼠后爪机械痛阈。

Pancuronium is an aminosteroid antagonist of muscle-type nicotinic acetylcholine receptors (nAChRs) with an IC50value of 14.8 nM using patch clamp electrophysiology in BOSC23 cells expressing mouse nAChRs.1It acts as a non-depolarizing neuromuscular blocking agent.2Pancuronium enhances anesthesia induced by isoflurane , reducing immobilization with an ED50value of 1.62 μg/kg.3 1.Liu, M., and Dilger, J.P.Site selectivity of competitive antagonists for the mouse adult muscle nicotinic acetylcholine receptorMol. Pharmacol.75(1)166-173(2009) 2.Buckett, W.R., Marjoribanks, C.E., Marwick, F.A., et al.The pharmacology of pancuronium bromide (Org.NA97), a new potent steroidal neuromuscular blocking agentBr. J. Pharmacol. Chemother.32(3)671-682(1968) 3.Miyazaki, Y., Sunaga, H., Hobo, S., et al.Pancuronium enhances isoflurane anesthesia in rats via inhibition of cerebral nicotinic acetylcholine receptorsJ. Anesth.30(4)671-676(2016)

Spermidine-d6 is intended for use as an internal standard for the quantification of spermidine by GC- or LC-MS. Spermidine is an endogenous polyamine. It is formed from putrescine by spermidine synthase. Spermidine (25 µM) inhibits the activity of the human inward-rectifying potassium channel Kir2.3 in a patch-clamp assay. It induces autophagy in HeLa cells when used at a concentration of 100 µM and increases the lifespan of D. melanogaster, yeast, and C. elegans. Spermidine (30 mM in the drinking water) reduces demyelination of the optic nerve and disease severity in a mouse model of experimental autoimmune encephalomyelitis (EAE). It reduces increases in blood pressure, left ventricular posterior wall thickness, and heart weight in salt-sensitive Dahl rats fed a high-salt diet, a model of hypertension-induced congestive heart failure.4 Formulations containing spermidine have been used as dietary supplements.

(R)-4-Amino-3-hydroxybutyric acid, also known as (R)-GABOB, acts as a modulator of GABA receptors, specifically binding to both GABAA and GABAB receptors and blocking GABA reuptake in rat brain synaptosomes. Additionally, it serves as a GABAC receptor agonist, triggering currents in patch-clamp assays with Xenopus oocytes that express the human receptor. In vivo studies reveal its capability to suppress electrical discharges in the amygdala in cats undergoing N-amidinobenzamide-triggered seizures, indicating its potential therapeutic application in managing seizure disorders.

ML-252 is a potent, selective inhibitor of the Kv7.2 voltage-gated potassium channel, demonstrating an IC50 value of 69 nM in patch clamp assays. It exists as the (S)-enantiomer, which is significantly more effective than both its (R)-enantiomer counterpart and the racemic mixture, with respective IC50 values of 944 nM and 160 nM. ML-252 exhibits high selectivity for Kv7.2 over other potassium channel subtypes and shows minimal activity against more than 68 G protein-coupled receptors, various transporters, L- and N-type calcium channels, K_ATP, and hERG potassium channels. However, it does inhibit the melatonin MT1 receptor by 61% at a 10 µM concentration.

C 101248是一种选择性且强效的小鼠和人类串联孔道卤素抑制K+通道1（THIK-1, IC50= 50 nM）抑制剂，对K2P家族成员TREK-1和TWIK-2以及Kv2.1无活性。C 101248能够阻断小鼠海马微胶质细胞中THIK-1 K+电流的整细胞膜片钳记录中的音调和ATP激发的电流。C 101248通过防止NLRP3依赖性IL-1β的释放，从而减少在分离的微胶质细胞中的神经炎症。

Guanosine 5’-diphosphate (GDP) is a purine nucleotide and biosynthetic precursor of guanosine 5’-triphosphate .1It has been used to study the conformations of GTPases.2GDP (100 μM) activates sulfonylurea receptor 2B (SUR2B) linked to the inward-rectifier potassium channel 6.1 (Kir6.1) in HEK293T cells in a patch-clamp assay.3 1.Berg, J.M., Tymoczko, J.L., and Stryer, L.Biochemistry(2002) 2.Vetter, I.R., and Wittinghofer, A.The guanine nucleotide-binding switch in three dimensionsScience294(5545)1299-1304(2001) 3.Yamada, M., Isomoto, S., Matsumoto, S., et al.Sulphonylurea receptor 2B and Kir6.1 form a sulphonylurea-sensitive but ATP-insensitive K+ channelJ. Physiol.499(Pt 3)715-720(1997)

PD-85639 is a voltage-gated sodium (Na+) channel blocker (75% in 10 min & >95% in 25 min blockage of Na+ current by 25 μM PD85,639; whole-cell patch clamp using primary rat brain neurons) that is shown to target rat brain Nav1.2 with simultaneous high- and low-affinity modes of binding (EC50 = 56 nM/40% & 20 μM/60% at pH 9.0, 5 nM/28% & 3 μM/72% at pH 7.4, against 2 nM [3H]-PD85,639 for binding rat brain synaptosomes; EC50 = 17 nM/39% & 10 μM/61% using at pH 9.0 using rat brain synaptosome membranes) and a fast kinetic (t1/2 = 1.2 at 4°C, <0.5 min at 25°C), competitive against the local anesthetic Na+ channel blockers tetracaine, bupivacaine, and mepivacaine, as well as Na+ channel activators veratridine and batrachotoxin (K1 = 0.26 μM against 5 nM [3H]-BTX for binding rat neocrotical membranes).

Selective TRPC5 activator (EC50 = 1.4 μM in a calcium influx assay, 1.3 μM in whole cell patch clamp assay). Displays >14.5-fold selectivity for TRPC5 over other TRP channels (EC50 = 20.6 μM for TRPM8). Also activates TRPC1:5 and TRPC4:5 heteromers. Beckmann et al (2017) A benzothiadiazine derivative and methylprednisolone are novel and selective activators of transient receptor potential canonical 5 (TRPC5) channels. Cell Calcium. 66 10 PMID:28807145