bkca-channel

GAL-021新型静脉内BKCa-channel 阻滞剂。

GAL-021 sulfate 是一种 BKCa 通道阻滞剂，抑制阿片类镇痛作用，可用于研究呼吸控制疾病。

(±)-Naringenin (Naringenine) 是一种天然的类黄酮。它通过激活肌细胞中 BKCa 通道发挥对内皮剥脱血管的舒张作用。

KS176是选择性高活性乳腺癌耐药蛋白多药转运通道抑制剂，在Pheo A 和Hoechst 检测中，IC50值分别为0.59和1.39 μM。

NS19504 是 Ca2+激活的 K+通道激活剂 (EC50=11.0 µM)，对膀胱平滑肌自发性相位收缩具有松弛作用。

Paxilline 是一种来自 Penicillium paxilli 的吲哚生物碱霉菌毒素，是一种常用的大电导、电压和 Ca（2+） 依赖性 BK 型 K（+） 通道的特异性抑制剂，具有抗惊厥活性，抑制 BK 通道，抑制肌质网 Ca2+ 刺激的 ATP 酶 (SERCA)，可减轻沙利度胺引起的小鼠突触和认知功能障碍。

Flindokalner (BMS-204352) 是一种钾离子通道调节剂。它是大电导钙激活 K 通道正向调节剂。它是在 HEK293 细胞中表达的所有神经元 Kv7通道亚型的正调节剂。它在 Kv7.1 通道 (Ki=3.7 μM) 处显示负调节活性，并充当 GABAA 受体的负调节剂。它在体内显示出抗焦虑功效。

NS 1619 是 Ca2+激活的 K+(BK) 通道的激活剂，是一种高效的松弛剂，在血管和其他组织的几个平滑肌中的 EC50约为 10 – 30 μM。它抑制A2780卵巢癌细胞增殖并诱导细胞凋亡。

17R(18S)-EpETE is an oxylipin and a cytochrome P450 metabolite of eicosapentaenoic acid .1,217R(18S)-EpETE is an activator of large-conductance calcium-activated potassium (BKCa) channels, increasing the potassium current amplitude by 15-fold in isolated rat cerebral artery vascular smooth muscle cells (VSMCs) at +60 mV when used at a concentration of 50 nM.2It has negative chronotropic effects in isolated neonatal rat cardiomyocytes (NRCMs; EC50= ~1-2 nM) and prevents calcium-induced increases in the spontaneous beating of NRCMs.3,4 1.Schwarz, D., Kisselev, P., Ericksen, S.S., et al.Arachidonic and eicosapentaenoic acid metabolism by human CYP1A1: Highly steroselective formation of 17(R), 18(S)-epoxyeicosatetraenoic acidBiochem. Pharmacol.67(8)1445-1457(2004) 2.Lauterbach, B., Barbosa-Sicard, E., Wang, M.H., et al.Cytochrome P450-dependent eicosapentaenoic acid metabolites are novel BK channel activatorsHypertension39(2 Pt. 2)609-613(2002) 3.Falck, J.R., Wallukat, G., Puli, N., et al.17(R),18(S)-Epoxyeicosatetraenoic acid, a potent eicosapentaenoic acid (EPA) derived regulator of cardiomyocyte contraction: Structure-activity relationships and stable analoguesJ. Med. Chem.54(12)4109-4118(2011) 4.Arnold, C., Markovic, M., Blossey, K., et al.Arachidonic acid-metabolizing cytochrome P450 enzymes are targets of omega-3 fatty acidsJ. Biol. Chem.285(43)32720-32733(2010)

BMS-191011 (BMS-A) 是一种大电导 Ca2+激活的钾通道 (Ca2+-activated potassium (maxi-K) channel) 激活剂，在中风模型中有研究价值。

Eicosapentaenoic acid (EPA) is metabolized into epoxyeicosatetraenoic acids (EpETE) by multiple cytochrome P450 isoforms. The predominant compound of this epoxygenase pathway, (±)17(18)-EpETE, induces relaxation in vascular and airway smooth muscles through its action on large conductance Ca2+-activated K+ (BKCa) channels, specifically by binding to the BKα channel subunits. Another notable epoxygenase pathway derivative, (±)11(12)-EpETE, also generated from EPA via CYP450 activity in both in vitro and in vivo studies, has biological and physiological roles that are yet to be fully elucidated.