Norepinephrine bitartrate is a precursor of epinephrine. Norepinephrine is the principal transmitter of most postganglionic sympathetic fibers and of the diffuse projection system in the brain arising from the locus ceruleus.
BIPM is a potent inhibitor of Rho-associated protein kinase 2 (ROCK2). Exposure of SH-SY5Y cells to BIPM led to significant changes in cell migration, actin stress fibers and neurite length. BIPM significantly inhibits phosphorylation of cofilin, a regula
Cytochalasin D is an actin inhibitor, the removal of actin stress fibers is crucial for the chondrogenic differentiation. It may be an inhibitor of some fertilization processes such as sperm penetration or sperm head decondensation. Cytochalasin D inhibit
Avermectin B1a aglycone is an aglycone form of the anthelmintic and insecticide avermectin B1a . It hyperpolarizes P. crassipes muscle fibers with a minimum active concentration (MAC) value of 0.1 μM. Avermectin B1a aglycone decreases survival of C. elegans (MAC = 0.1 μM). In vivo, avermectin B1a aglycone prevents seizures induced by pentylenetetrazole in mice (ED50 = 43.9 mg/kg) without inducing deficits in rotarod performance.
(3S)-hydroxy Quinidine is an active quinidine metabolite. Quinidine, an antiarrhythmic agent, undergoes rapid first-pass metabolism by the cytochrome P450 (CYP) isoforms CYP3A4, CYP2C9, CYP2E1, and CYP3A5, with CYP3A4 being the most active enzyme in the (3S)-hydroxy quinidine formation. (3S)-hydroxy Quinidine prolongs repolarization of canine Purkinje fibers in vitro and prevents ventricular fibrillation and ventricular tachycardia after coronary reperfusion in isolated rat hearts in a dose-dependent manner.
Alinidine hydrobromide, a specific bradycardic agent, diminishes the slope of the diastolic depolarization in sinoatrial tissue and Purkinje fibers [1].