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MMP-9 Upregulation is Attenuated by the Monoclonal TLR2 Antagonist T2.5 After Oxygen-Glucose Deprivation and Reoxygenation in Rat Brain Microvascular Endothelial Cells

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机构: [1]Department of Clinical Laboratory, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, No. 157, Jinbi Road, Xishan District, Kunming 650031, China [2]Department of Clinical Laboratory, The First People's Hospital of Yunnan Province, Kunming, China [3]Medicine Faculty of Kunming University of Science and Technology, Kunming, No. 727 Jingming Road, Chenggong District, Kunming 650093, China [4]Department of Clinical Laboratory, The First Affiliated Hospital of Kunming Medical University, Kunming, No. 295, Xichang Road, Wuhua District, Kunming 650032, China [5]Department of Neurology, The First People's Hospital of Yunnan Province, Kunming, China.
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关键词: Brain microvascular endothelial cells toll like receptor-2 matrix metalloproteinases-2/9 blood-brain barrier tight junction proteins anti-TLR2 antibody (T2 5)

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Background: Blood-brain barrier (BBB) disruption plays a key role in the pathophysiology of acute ischemic stroke. Matrix metalloproteinases-2/9 (MMP-2/9) have been shown to participate in the disruption of the BBB and hemorrhagic transformation after cerebral ischemia. Toll-like receptor 2 (TLR2) may also be correlated with endothelial cell injury during ischemia-reperfusion events. However, the correlation between MMP-2/9 and TLR2 on endothelial cells after ischemia has not yet been evaluated. The aim of the study was to evaluate the impact of TLR2 and MMP-2/9 on tight junction proteins (TJs) after oxygen-glucose deprivation and reoxygenation (OGDR). Materials and methods: Rat primary brain microvascular endothelial cells (BMECs) were cultured. Quantitative real-time PCR and western blotting were used to measure the mRNA and proteins expression of TLR2 and MMP-2/-9. The protein expression of TJs was detected by western blotting and immunofluorescence. Results: MMP-9 significantly increased after OGDR. Protein and mRNA expression of TLR2 was also upregulated. However, claudin-5, occludin, collagen-IV, and ZO-1 were decreased after OGDR. When monoclonal anti-TLR2 antibody (T2.5) was added to BMECs after OGDR, MMP-9 was significantly downregulated, whereas occludin and collagen-IV had a tendency to increase. Conclusion: TLR2 antagonist T2.5 is able to downregulate the expression of MMP-9, and may constitute a therapeutic option for restoration of the BBB after OGDR.

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出版当年[2020]版:
大类 | 4 区 医学
小类 | 4 区 神经科学 4 区 外周血管病
最新[2023]版:
大类 | 4 区 医学
小类 | 4 区 神经科学 4 区 外周血管病
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出版当年[2019]版:
Q4 PERIPHERAL VASCULAR DISEASE Q4 NEUROSCIENCES
最新[2023]版:
Q3 NEUROSCIENCES Q3 PERIPHERAL VASCULAR DISEASE

影响因子: 最新[2023版] 最新五年平均 出版当年[2019版] 出版当年五年平均 出版前一年[2018版] 出版后一年[2020版]

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第一作者机构: [1]Department of Clinical Laboratory, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, No. 157, Jinbi Road, Xishan District, Kunming 650031, China [2]Department of Clinical Laboratory, The First People's Hospital of Yunnan Province, Kunming, China [3]Medicine Faculty of Kunming University of Science and Technology, Kunming, No. 727 Jingming Road, Chenggong District, Kunming 650093, China
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通讯机构: [*1]Department of Neurology, The First People's Hospital of Yunnan Province, No. 157, Jinbi Road,Xishan District, Kunming 650031, China.
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