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Nebivolol盐酸盐是β1- 肾上腺素受体选择性抑制剂,IC50为0.8 nM。
Information
Nebivolol HCl (R-65824) selectively inhibitsβ1-adrenoceptorwithIC50of 0.8 nM.
In vitro
Nebivolol shows high affinity and selectivity for beta 1-adrenergic receptor sites in a rabbit lung membrane preparation (Ki value = 0.9 nM and beta 2/beta 1 ratio = 50). Nebivolol displays β1-adrenoceptor selectivity with the Ki(β2)/Ki(β1) value of 40.7 judged by competition experiments to 3H-CGP 12.1777 in the presence of CGP 207.12 A (300 nM, Kiβ2) or ICI 118.551 (50 nM, Kiβ1). Nebivolol reduces cell proliferation of human coronary smooth muscle cells (haCSMCs) and endothelial cells (haECs) in a concentration- and time-dependent maner. Nebivolol treatment for 7 days causes significant reduction in cell growth of haCSMCs with IC50 of 6.1 μM, and inhibits accelerated haCSMC proliferation stimulated by growth factors PDGF-BB, bFGF, and TGFβ with IC50 values of 6.8 μM, 6.4 μM and 7.7 μM, repectively. Nebivolol treatment (10-5 M) of haCSMCs for 48 hours induces a moderate apoptosis of 23% and a decrease from 16% to 5% in the number of cells in S-phase. During Nebivolol incubation, NO formation of HaCEs increases, while endothelin-1 transcription and secretion are suppressed.
In vivo
Administratiion of Nebivolol (initially by iv within 10 minutes of reperfusion and then orally) to rats with myocardial infarction (MI) reduces myocardial apoptosis, which is mediated by regulation of NO . Nebivolol, significantly, prevents left ventricular (LV) pressure changes, reduces total and regional apoptotic cardiomyocytes. Nebivolol treatment lowers mean blood pressure (MBP) in rats with MI slightly, but not significantly.
Cell Data
cell lines:
Concentrations:Dissolved in 100% methanol and diluted with three volumes of growth medium to obtain a stock solution of 10-3 M, final concentration 10-7~10-5 M
Incubation Time:1, 2, 4, 7 and 14 days
Powder Purity:≥97%
H302: 吞食有害
H400: 对水生生物有剧毒
H410: 对水生生物有剧毒并具有长期持续影响
H361: 怀疑破坏生育力或未出生的孩子
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P264: 处理后要彻底洗手。
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P391: 收集溢出物
P330: 漱口
P203: 使用前,获取、阅读并遵守所有安全说明。
P301+P317: 如果被吞咽:请寻求医疗帮助。
P318: 如果暴露或担心,请就医。