Angiotensin receptor blockers: Evidence for preserving target organs
作者:Peter Carson、Thomas Giles、Michael Higginbotham、Norman Hollenberg、William Kannel、Helmy M. Siragy
DOI:10.1002/clc.4960240303
日期:2001.3
these two classes of antihypertensive medications have different mechanisms of action and different pharmacologic profiles. Angiotensin-converting enzyme inhibitors block a single pathway in the production of angiotensin II (Ang II). In addition, angiotensin I is not the only substrate for ACE. The ACE inhibitors also block the degradation of bradykinin that may have potential benefits in cardiovascular
高血压是整个发达国家的一个主要问题。尽管目前的抗高血压治疗方案可降低发病率和死亡率,但患者往往不依从,并且药物可能无法完全使血压正常化。因此,当前的治疗常常不能预防或逆转血压长期升高时经常发生的心血管重塑。阻断肾素-血管紧张素系统(RAS)可有效控制高血压和治疗充血性心力衰竭。血管紧张素转换酶 (ACE) 抑制剂和血管紧张素受体阻滞剂 (ARB) 都会抑制 RAS 的活性,但这两类抗高血压药物具有不同的作用机制和不同的药理学特征。血管紧张素转换酶抑制剂阻断血管紧张素 II (Ang II) 产生的单一途径。此外,血管紧张素I并不是ACE的唯一底物。ACE 抑制剂还可以阻止缓激肽的降解,这可能对心血管疾病有潜在的益处。然而,缓激肽是与 ACE 抑制剂治疗相关的咳嗽的推测原因。ACE 抑制剂临床试验的数据支持 RAS 参与心血管疾病的发展。血管紧张素受体阻滞剂作用于 RAS 远端,选择性阻断 Ang
3d-orbital resonance in divalent sulphide—XIII
作者:S. Oae、Y. Yano
DOI:10.1016/s0040-4020(01)96302-1
日期:1968.1
t-butanol containing potassium t-butoxide and in ethanol containing sodiumethoxide. The rates of the E2 reaction of the sulphur compounds are found to be 102–103 times as great as those of the corresponding oxygen analogues in both media. These rates can be correlated with Hammett σ values. The ρ values obtained for sulphur compounds are 1·98 and 2·14 in t-butanol and ethanol, while those for oxygen