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Results for "

guinea pig papillary muscle

" in MedChemExpress (MCE) Product Catalog:

7

Inhibitors & Agonists

1

Natural
Products

Cat. No. Product Name Target Research Areas Chemical Structure
  • HY-19664
    Pranidipine

    OPC-13340

    		 Calcium Channel NO Synthase Cardiovascular Disease
    Pranidipine (OPC-13340) is an orally active L-type voltage-dependent calcium channel (L-VDCC) blocker with a Ki value of 0.16 nM. Pranidipine inhibits calcium-induced contraction, suppresses slow-response action potentials, shortens action potential duration, reduces systolic and diastolic blood pressure, and exerts vasodilatory effects. Pranidipine enhances its vasodilatory effect by blocking NO decomposition. Pranidipine can be used in research related to essential hypertension, angina pectoris, myocardial infarction, and dilated cardiomyopathy .
    Pranidipine
  • HY-N3198A
    Sophoramine
    1 Publications Verification

    (-)-Sophoramine

    		 Adrenergic Receptor Cardiovascular Disease
    Sophoramine ((-)-Sophoramine) is a prejunctional α2-adrenoceptor inhibitor that can be found in the seeds of Sophora alopecuroides. Sophoramine inhibits prejunctional α2-adrenoceptors to facilitate norepinephrine release from adrenergic nerves. Sophoramine shows cytotoxic activity against human cancer cells, positive inotropic activity, and activity in rodent arrhythmia models. Sophoramine can be used for the research of arrhythmias .
    Sophoramine
  • HY-106831
    R 56865

    		Calcium Channel Cardiovascular Disease
    R 56865 is a cardiomyocyte protective agent that protects against digitoxin (Ouabain)-induced myocardial calcium overload. R 56865 has a protective effect against digitoxin-induced intoxication in guinea pig papillary muscle .
    R 56865
  • HY-114920
    Piprofurol

    		Calcium Channel Cardiovascular Disease
    Piprofurol is a calcium channel inhibitor. Piprofurol inhibits the calcium-induced contractions in isolated potassium depolarized preparations of rat aorta in a concentration-dependent manner and relaxes the K +-induced contraction of the dog coronary artery and the rabbit basilar artery. Piprofurol exerts a negative inotropic effect on guinea-pig papillary muscle, with the EC50 of 5 μM .
    Piprofurol
  • HY-136677
    Lnd 796

    		Calcium Channel Cardiovascular Disease
    LND 796 is an aminosteroidal derivative with positive inotropic effects similar to those of digitalis. It exhibits electrophysiological, toxic, and inotropic effects in normal and partially potassium-depolarized ventricular muscles. LND 796 requires higher concentrations than digoxin to induce the same toxic symptoms. It exhibits a concentration-dependent positive inotropic effect on guinea pig papillary muscles in normal potassium solution. In partially potassium-depolarized papillary muscles, LND 796 enhances both components of contraction and increases the amplitude of slow action potentials. The mechanism of positive inotropic action of LND 796 involves enhanced calcium entry in calcium channels and inhibition of sodium-potassium ATPase. Due to its expanded positive inotropic range, LND 796 may have potential application in the treatment of congestive heart failure.
    Lnd 796
  • HY-113841
    RS-87337

    		Others Sodium Channel Potassium Channel Cardiovascular Disease Inflammation/Immunology
    RS-87337 is an orally active piperazine-amidine hybrid class Ia (inhibiting Vmax, IC50 = 17 μM)/class III (prolonging ADP90, EC15 = 2 μM) antiarrhythmic agent with selectivity for ventricular conduction . RS-87337 inhibits cardiac sodium channel, thereby reducing the maximum depolarization rate of action potential, with moderate onset and recovery kinetics. RS-87337 reduces cardiac outward potassium conductance (I_K), thus prolonging action potential duration. RS-87337 is applicable to research related to arrhythmia, ventricular arrhythmia, ventricular fibrillation, and myocardial ischemia-reperfusion injury .
    RS-87337
  • HY-183206
    UR 8225

    		Potassium Channel Calcium Channel Cardiovascular Disease Inflammation/Immunology
    UR 8225 is an orally active ATP-sensitive K + channel activator with vasodilator, smooth muscle relaxant, antihypertensive, and bronchodilator activities. UR 8225 induces membrane hyperpolarization by increasing outward K + conductance and reduces Ca 2+ influx through voltage-gated L-type Ca 2+ channels. UR 8225 reduces total peripheral vascular resistance, shortens cardiac action potential duration, inhibits agonist-induced Ca 2+ influx, and stimulates renin release. UR 8225 induces reflex tachycardia but lacks β-adrenergic receptor blocking activity. UR 8225 is widely applicable to research in fields related to hypertension, myocardial ischemia, ventricular fibrillation, and other conditions .
    UR 8225

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