Diverse Functions and Mechanisms of Pericytes in Ischemic Stroke

Title:Diverse Functions and Mechanisms of Pericytes in Ischemic Stroke

Volume: 15 Issue: 6

Author(s): Shuai Yang, Huijuan Jin, Yiyi Zhu, Yan Wan, Elvis Nana Opoku, Lingqiang Zhu*Bo Hu*

Affiliation:

• Department of Pathophysiology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan,China

• Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan,China

Keywords: Pericytes, ischemic stroke, BBB, NVU, mechanisms, therapeutic targets.

Abstract: Background: Every year, strokes take millions of lives and leave millions of individuals living with permanent disabilities. Recently more researchers embrace the concept of the neurovascular unit (NVU), which encompasses neurons, endothelial cells (ECs), pericytes, astrocyte, microglia, and the extracellular matrix. It has been well-documented that NVU emerged as a new paradigm for the exploration of mechanisms and therapies in ischemic stroke. To better understand the complex NVU and broaden therapeutic targets, we must probe the roles of multiple cell types in ischemic stroke. The aims of this paper are to introduce the biological characteristics of brain pericytes and the available evidence on the diverse functions and mechanisms involving the pericytes in the context of ischemic stroke.

Methods: Research and online content related to the biological characteristics and pathophysiological roles of pericytes is review. The new research direction on the Pericytes in ischemic stroke, and the potential therapeutic targets are provided.

Results: During the different stages of ischemic stroke, pericytes play different roles: 1) On the hyperacute phase of stroke, pericytes constriction and death may be a cause of the no-reflow phenomenon in brain capillaries; 2) During the acute phase, pericytes detach from microvessels and participate in inflammatory-immunological response, resulting in the BBB damage and brain edema. Pericytes also provide benefit for neuroprotection by protecting endothelium, stabilizing BBB and releasing neurotrophins; 3) Similarly, during the later recovery phase of stroke, pericytes also contribute to angiogenesis, neurogenesis, and thereby promote neurological recovery.

Conclusion: This emphasis on the NVU concept has shifted the focus of ischemic stroke research from neuro-centric views to the complex interactions within NVU. With this new perspective, pericytes that are centrally positioned in the NVU have been widely studied in ischemic stroke. More work is needed to elucidate the beneficial and detrimental roles of brain pericytes in ischemic stroke that may serve as a basis for potential therapeutic targets.

Cite this article as:

Yang Shuai, Jin Huijuan, Zhu Yiyi, Wan Yan, Opoku Nana Elvis , Zhu Lingqiang*, Hu Bo*, Diverse Functions and Mechanisms of Pericytes in Ischemic Stroke, Current Neuropharmacology 2017; 15 (6) . https://dx.doi.org/10.2174/1570159X15666170112170226

DOI https://dx.doi.org/10.2174/1570159X15666170112170226	Print ISSN 1570-159X
Publisher Name Bentham Science Publisher	Online ISSN 1875-6190