Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195.
Drug Deliv Transl Res. 2011 Dec 1;1(6):409-19. doi: 10.1007/s13346-011-0046-y.
Stroke is a leading cause of death, long-term disability, and socioeconomic costs, highlighting the urgent need for more effective treatments. Intravenous administration of tissue plasminogen activator (t-PA) is the only FDA-approved therapy to re-establish cerebral blood flow. However, because of increased risk of hemorrhage beyond 3 h post stroke, few stroke patients (1-2%) benefit from t-PA; t-PA, which has neurotoxic effects, can also aggravate the extent of reperfusion injury by increasing blood-brain barrier permeability. An alternative strategy is needed to extend the window of intervention, minimize damage from reperfusion injury, and promote brain repair leading to neurological recovery. Reactive oxygen species (ROS), generated soon after ischemia and during reperfusion and thereafter, are considered the main mediators of ischemic injury. Antioxidant enzymes such as catalase, superoxide dismutase, etc. can neutralize ROS-mediated injury but their effective delivery to the brain remains a challenge. In this article, we review various therapeutic approaches including surgical interventions, and discuss the potential of nanoparticle-mediated delivery of antioxidants for stroke therapy.
中风是导致死亡、长期残疾和社会经济成本的主要原因,这凸显了迫切需要更有效的治疗方法。静脉注射组织型纤溶酶原激活剂(t-PA)是唯一获得 FDA 批准的恢复脑血流的疗法。然而,由于中风后 3 小时以上出血风险增加,只有少数中风患者(1-2%)受益于 t-PA;具有神经毒性作用的 t-PA 也会通过增加血脑屏障通透性,加重再灌注损伤的程度。需要一种替代策略来延长干预窗口期,最大限度地减少再灌注损伤造成的损害,并促进大脑修复,从而实现神经功能恢复。活性氧(ROS)在缺血后和再灌注期间以及之后迅速产生,被认为是缺血性损伤的主要介质。过氧化氢酶、超氧化物歧化酶等抗氧化酶可以中和 ROS 介导的损伤,但将其有效递送至大脑仍然是一个挑战。在本文中,我们综述了各种治疗方法,包括手术干预,并讨论了纳米颗粒介导的抗氧化剂输送在中风治疗中的潜力。
Drug Deliv Transl Res. 2011-12-1
Biomedicines. 2023-3-4
Curr Pharm Des. 2020
Semin Neurol. 1998
J Nanobiotechnology. 2024-7-18
Bioengineering (Basel). 2023-1-31
J Pers Med. 2022-7-23
J Cereb Blood Flow Metab. 2022-7
Pharmacol Biochem Behav. 2011-8-1
Arch Pediatr Adolesc Med. 2011-8
Stroke Res Treat. 2010-12-1