4.7 Article

Targeted nano-delivery strategies for facilitating thrombolysis treatment in ischemic stroke

期刊

DRUG DELIVERY
卷 28, 期 1, 页码 357-371

出版社

TAYLOR & FRANCIS LTD
DOI: 10.1080/10717544.2021.1879315

关键词

Targeted drug delivery; thrombolysis; ischemic stroke; nanothrombolysis; tissue plasminogen activator

资金

  1. National Natural Science Foundation of China [81971105]
  2. Jilin Province Department of Finance [JLSWSRCZX2020-0035]

向作者/读者索取更多资源

Ischemic stroke, caused by sudden reduction in cerebral blood flow, is a major cause of severe disability and death globally. The use of tissue plasminogen activator (tPA) for thrombolysis treatment has limitations, but nanotechnology-based strategies have shown promise in improving thrombolytic efficacy and targeted delivery of thrombolytic agents.
Ischemic stroke is one of the major causes of severe disability and death worldwide. It is mainly caused by a sudden reduction in cerebral blood flow due to obstruction of the supplying vessel by thrombi and subsequent initiation of a complex cascade of pathophysiological changes, which ultimately lead to brain ischemia and even irreversible infarction. Thus, timely and effective thrombolysis therapy remains a mainstay for acute ischemic stroke treatment. Tissue plasminogen activator (tPA), the only thrombolytic agent approved globally, provides substantial benefits by exerting a fibrinolysis effect, recovering the blood supply in occluded vessels and, thereby, salvaging the ischemic tissue. However, the clinical application of tPA was limited because of a few unsolved issues, such as a narrow therapeutic window, hemorrhagic complications, and limited thrombolytic efficacy, especially, for large thrombi. With the prosperous development of nanotechnology, a series of targeted delivery strategies and nanocomposites have been extensively investigated for delivering thrombolytic agents to facilitate thrombolysis treatment. Excitingly, numerous novel attempts have been reported to be effective in extending the half-life, targeting the thrombus site, and improving the thrombolytic efficacy in preclinical models. This article begins with a brief introduction to ischemic stroke, then describes the current state of thrombolysis treatment and, finally, introduces the application of various nanotechnology-based strategies for targeted delivery of thrombolytic agents. Representative studies are reviewed according to diverse strategies and nano-formulations, with the aim of providing integrated and up-to-date information and to improve the development of thrombolysis treatment for stroke patients.

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