Artesunate Protected Blood–Brain Barrier via Sphingosine 1 Phosphate Receptor 1/Phosphatidylinositol 3 Kinase Pathway After Subarachnoid Hemorrhage in Rats

Blood–brain barrier preservation plays an important role in attenuating vasogenic brain edema after subarachnoid hemorrhage (SAH). This study was designed to investigate the protective effect and mechanism of artesunate, a traditional anti-malaria drug, on blood–brain barrier after SAH. Three hundre...

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Veröffentlicht in:Molecular neurobiology 2017-03, Vol.54 (2), p.1213-1228
Hauptverfasser: Zuo, Shilun, Ge, Hongfei, Li, Qiang, Zhang, Xuan, Hu, Rong, Hu, Shengli, Liu, Xin, Zhang, John H., Chen, Yujie, Feng, Hua
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container_end_page 1228
container_issue 2
container_start_page 1213
container_title Molecular neurobiology
container_volume 54
creator Zuo, Shilun
Ge, Hongfei
Li, Qiang
Zhang, Xuan
Hu, Rong
Hu, Shengli
Liu, Xin
Zhang, John H.
Chen, Yujie
Feng, Hua
description Blood–brain barrier preservation plays an important role in attenuating vasogenic brain edema after subarachnoid hemorrhage (SAH). This study was designed to investigate the protective effect and mechanism of artesunate, a traditional anti-malaria drug, on blood–brain barrier after SAH. Three hundred and seventy-seven (377) male Sprague–Dawley rats were subjected to endovascular perforation model for SAH. The rats received artesunate alone or in combination with Sphingosine-1-phosphate receptor-1 (S1P1) small interfering RNA (siRNA), antagonist VPC23019, or phosphatidylinositol 3-kinase inhibitor wortmannin after SAH. Modified Garcia score, SAH grades, brain water content, Evans blue leakage, transmission electron microscope, immunohistochemistry staining, Western blot, and cultured endothelial cells were used to investigate the optimum concentration and the therapeutic mechanism of artesunate. We found that artesunate (200 mg/kg) could do better in raising modified Garcia score, reducing brain water content and Evans blue leakage than other groups after SAH. Moreover, artesunate elevated S1P1 expression, enhanced phosphatidylinositol 3-kinase activation, lowered GSK-3β activation, stabilized β-catenin, and improved the expression of Claudin-3 and Claudin-5 after SAH in rats. These effects were eliminated by S1P1 siRNA, VPC23019, and wortmannin. This study revealed that artesunate could preserve blood–brain barrier integrity and improve neurological outcome after SAH, possibly through activating S1P 1 , enhancing phosphatidylinositol 3-kinase activation, stabilizing β-catenin via GSK-3β inhibition, and then effectively raising the expression of Claudin-3 and Claudin-5. Therefore, artesunate may be favorable for the blood–brain barrier (BBB) protection after SAH and become a potential candidate for the treatment of SAH patients.
doi_str_mv 10.1007/s12035-016-9732-6
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This study was designed to investigate the protective effect and mechanism of artesunate, a traditional anti-malaria drug, on blood–brain barrier after SAH. Three hundred and seventy-seven (377) male Sprague–Dawley rats were subjected to endovascular perforation model for SAH. The rats received artesunate alone or in combination with Sphingosine-1-phosphate receptor-1 (S1P1) small interfering RNA (siRNA), antagonist VPC23019, or phosphatidylinositol 3-kinase inhibitor wortmannin after SAH. Modified Garcia score, SAH grades, brain water content, Evans blue leakage, transmission electron microscope, immunohistochemistry staining, Western blot, and cultured endothelial cells were used to investigate the optimum concentration and the therapeutic mechanism of artesunate. We found that artesunate (200 mg/kg) could do better in raising modified Garcia score, reducing brain water content and Evans blue leakage than other groups after SAH. Moreover, artesunate elevated S1P1 expression, enhanced phosphatidylinositol 3-kinase activation, lowered GSK-3β activation, stabilized β-catenin, and improved the expression of Claudin-3 and Claudin-5 after SAH in rats. These effects were eliminated by S1P1 siRNA, VPC23019, and wortmannin. This study revealed that artesunate could preserve blood–brain barrier integrity and improve neurological outcome after SAH, possibly through activating S1P 1 , enhancing phosphatidylinositol 3-kinase activation, stabilizing β-catenin via GSK-3β inhibition, and then effectively raising the expression of Claudin-3 and Claudin-5. 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This study was designed to investigate the protective effect and mechanism of artesunate, a traditional anti-malaria drug, on blood–brain barrier after SAH. Three hundred and seventy-seven (377) male Sprague–Dawley rats were subjected to endovascular perforation model for SAH. The rats received artesunate alone or in combination with Sphingosine-1-phosphate receptor-1 (S1P1) small interfering RNA (siRNA), antagonist VPC23019, or phosphatidylinositol 3-kinase inhibitor wortmannin after SAH. Modified Garcia score, SAH grades, brain water content, Evans blue leakage, transmission electron microscope, immunohistochemistry staining, Western blot, and cultured endothelial cells were used to investigate the optimum concentration and the therapeutic mechanism of artesunate. We found that artesunate (200 mg/kg) could do better in raising modified Garcia score, reducing brain water content and Evans blue leakage than other groups after SAH. 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subjects Animals
Artemisinins - pharmacology
Artemisinins - therapeutic use
Biomedical and Life Sciences
Biomedicine
Blood-brain barrier
Blood-Brain Barrier - drug effects
Blood-Brain Barrier - metabolism
Blood-Brain Barrier - pathology
Cell Biology
Cells, Cultured
Dose-Response Relationship, Drug
Hemorrhage
Kinases
Male
Neurobiology
Neurology
Neuroprotective Agents - pharmacology
Neuroprotective Agents - therapeutic use
Neurosciences
Phosphatidylinositol 3-Kinase - metabolism
Random Allocation
Rats
Rats, Sprague-Dawley
Receptors, Lysosphingolipid - metabolism
Signal Transduction - drug effects
Signal Transduction - physiology
Subarachnoid Hemorrhage - metabolism
Subarachnoid Hemorrhage - pathology
Subarachnoid Hemorrhage - prevention & control
title Artesunate Protected Blood–Brain Barrier via Sphingosine 1 Phosphate Receptor 1/Phosphatidylinositol 3 Kinase Pathway After Subarachnoid Hemorrhage in Rats
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