化学性质：                                                                                                             

产品描述：                                                                                                            

NS 8593 is an inhibitory gating modifier of small conductance calcium-activated potassium (SK) channels (Kds = 0.42, 0.6, and 0.73 μM for SK1, SK2, and SK3, respectively, in the presence of calcium) that decreases the calcium sensitivity of SK channels.[1] It is selective for SK channels over intermediate (IK) and large conductance (BK) potassium channels at 10 μM. NS 8593 induces relaxation of potassium- or acetylcholine chloride-precontracted isolated tracheal rings from wild-type mice (IC50s = 8.9 and 39.8 μM, respectively) or from mice in an ovalbumin-induced model of allergic asthma (IC50s = 16.4 and 32.2 μM, respectively).[2] It inhibits aerosolized acetylcholine chloride-induced increases in respiratory system resistance in mice when administered as an aerosol at a dose of 500 μM. NS 8593 (5 mg/kg) decreases the duration of burst-pacing-induced atrial fibrillation in normotensive and spontaneously hypertensive rats.[3]

特别提醒：