中国神经再生研究(英文版) ›› 2022, Vol. 17 ›› Issue (12): 2666-2668.doi: 10.4103/1673-5374.339481

• 观点:脑损伤修复保护与再生 • 上一篇    下一篇

星形细胞水通道蛋白亚细胞易位是否是细胞毒性水肿的更好治疗靶点,而不是其在缺血性脑卒中中的抑制作用?

  

  • 出版日期:2022-12-15 发布日期:2022-05-05

Astrocytic aquaporin 4 subcellular translocation as a therapeutic target for cytotoxic edema in ischemic stroke

Adjanie Patabendige*, Ruoli Chen*   

  1. Department of Biology, Edge Hill University, Ormskirk, UK (Patabendige A) 
    Brain Barriers Group, School of Biomedical Sciences and Pharmacy, The University of Newcastle, Callaghan, NSW, Australia 
    (Patabendige A) 
    School of Pharmacy and Bioengineering, Keele University, Newcastle Under Lyme, Staffordshire, UK (Chen R)
  • Online:2022-12-15 Published:2022-05-05
  • Contact: Adjanie Patabendige, PhD, Adjanie.Patabendige@edgehill.ac.uk; Ruoli Chen, PhD, r.chen@keele.ac.uk.
  • Supported by:
    AP was supported by the NSW Ministry of Health, Australia under the NSW Health Early-Mid Career Fellowships Scheme and the Australian Academy of Technology and Engineering (ATSE) under the Global Connections Fund. The content is solely the responsibility of the authors and does not reflect the views of the NSW Health Entity. RC was supported by research grants received from the Wellcome Trust (200633/z/16/z) and Keele University.

摘要: https://orcid.org/0000-0003-1550-3084 (Adjanie Patabendige);
https://orcid.org/0000-0001-8745-5902 (Ruoli Chen)

关键词:

Abstract: Brain edema is a common feature of several brain diseases (e.g., stroke, traumatic brain injury, hydrocephalus, brain cancer, and brain infections). Brain edema leads to increased intracranial pressure and worsens outcomes in ischemic stroke patients. Conventional treatments to control brain edema, thus reducing intracranial pressure include different osmotherapeutics, hyperventilation, tromethamine, hypothermia, and barbiturate coma. However, level 1 evidence of efficacy is lacking for these treatments, with some being harmful rather than beneficial (Bardutzky and Schwab, 2007). It has been proposed aquaporin 4 (AQP4) can be a novel drug target for treating brain edema (Vandebroek and Yasui, 2020). AQP4 is a small integral membrane protein and is strongly expressed in the brain. It has a highly polarized expression towards the abluminal side of astrocytic endfeet that surrounds the brain vasculature and is also expressed on the subpial and subependymal astrocyte processes, as well as basolateral membranes of ependymal cells (Patabendige et al., 2021). AQP4 is primarily involved in bidirectional water flux, but also has diverse roles such as Ca2+ signaling, K+ buffering, neuroinflammation, and waste clearance (Verkman et al., 2017). Astroglial water movements induced by AQP4 have been shown to be a driving force contributing to the paravascular clearance of interstitial solutes like amyloid-β, thus participating in the so-called “glymphatic system” (Iliff et al., 2012).