Murphy Elizabeth, Steenbergen Charles
National Institute of Environmental Health Sciences, Laboratory of Signal Transduction, NIH, DHHS, Research Triangle Park, NC 27709, USA.
Expert Opin Ther Targets. 2005 Jun;9(3):447-56. doi: 10.1517/14728222.9.3.447.
Cardiovascular disease is the major cause of morbidity and mortality in western countries such as the US. Myocardial infarction leads to loss of myocytes and with extremely limited ability to replenish cardiomyocytes, the heart exhibits depressed contractility. This ultimately results in hypertrophy of the remaining viable myocytes, which is the primary predictor for heart failure. Thus, drug therapies which can reduce myocyte cell death and reduce postischaemic dysfunction would be expected to greatly reduce cardiac hypertrophy and subsequent heart failure and death. Inhibition of glycogen synthase kinase (GSK)-3beta has been proposed as a strategy to improve postischaemic cardiomyocyte survival, as inhibition of GSK-3beta has been shown to reduce myocardial cell death following ischaemia and reperfusion. Therapies for inhibiting GSK are feasible as there are a number of newly developed specific inhibitors of GSK available, although most of these drugs have not been tested in long-term animal studies.
在美国等西方国家,心血管疾病是发病和死亡的主要原因。心肌梗死会导致心肌细胞丧失,由于补充心肌细胞的能力极其有限,心脏表现出收缩力下降。这最终会导致剩余存活心肌细胞肥大,而这是心力衰竭的主要预测指标。因此,能够减少心肌细胞死亡并减轻缺血后功能障碍的药物疗法有望大幅降低心脏肥大以及随后的心力衰竭和死亡风险。抑制糖原合酶激酶(GSK)-3β已被提议作为改善缺血后心肌细胞存活的一种策略,因为抑制GSK-3β已被证明可减少缺血再灌注后的心肌细胞死亡。抑制GSK的疗法是可行的,因为有许多新开发的GSK特异性抑制剂可供使用,尽管这些药物大多尚未在长期动物研究中进行测试。