Abstract：
OBJECTIVE:The present study aimed to characterize the mechanism of fluid shear stress (FSS)-induced endothelial cell (EC) injury via protein kinase C alpha (PKCα)-mediated vascular endothelial cadherin (VE-cadherin) and p120-catenin (p120ctn) expression. METHODS:We designed a T chamber system that produced stable FSS on ECs in vitro. Human umbilical vein endothelial cells (HUVECs) in which PKCα was knocked down and normal HUVECs were cultured on the coverslips. FSS was impinged on these 2 types of ECs for 0 hours and 6 hours. The morphology and density of HUVECs were evaluated, and expression levels of phosphorylated PKCα, p120-catenin (p120ctn), VE-cadherin, phosphorylated p120ctn at S879 (p-S879p120ctn), and nuclear factor kappa B (NF-κB) were analyzed by Western blot. RESULTS:HUVECs exposed to FSS were characterized by a polygonal shape and decreased cell density. The phosphorylated PKCα level was increased under FSS at 6 hours (P < 0.05). In normal HUVECs during FSS, p120ctn and VE-cadherin were decreased, whereas p-S879p120ctn and NF-κB were increased, at 6 hours (P < 0.05). In HUVECs after PKCα knockdown, p120ctn and VE-cadherin were not significantly changed (P > 0.05), p-S879p120ctn was undetectable, but NF-κB was decreased (P < 0.05) at 6 hours. CONCLUSIONS:The possible mechanism of FSS-induced EC injury may be as follows: 1) PKCα induces low expression of p120ctn, which leads to activation of NF-κB and degradation of VE-cadherin; 2) PKCα-mediated phosphorylation of p120ctn at S879 disrupts p120ctn binding to VE-cadherin.
journal_name
World Neurosurgjournal_title
World neurosurgeryauthors
Zhao YY,Huang SX,Hao Z,Zhu HX,Xing ZL,Li MHdoi
10.1016/j.wneu.2020.01.028subject
Has Abstractpub_date
2020-04-01 00:00:00pages
e469-e475eissn
1878-8750issn
1878-8769pii
S1878-8750(20)30035-8journal_volume
136pub_type
杂志文章abstract：OBJECTIVE:To observe the clinical effects of posterior percutaneous full-endoscopic cervical foraminotomy in patients with osseous foraminal stenosis. METHODS:Nine patients with osseous foraminal stenosis underwent surgery using the posterior percutaneous full-endoscopic cervical foraminotomy technique and received fo...
journal_title：World neurosurgery
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pub_type： 杂志文章,评审
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更新日期：2013-11-01 00:00:00
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更新日期：2018-05-01 00:00:00
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更新日期：2019-07-01 00:00:00
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更新日期：2013-12-01 00:00:00
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更新日期：2020-02-01 00:00:00
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更新日期：2018-12-01 00:00:00
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更新日期：2018-09-01 00:00:00
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更新日期：2018-12-01 00:00:00
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更新日期：2017-05-01 00:00:00
