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 ORIGINAL ARTICLE
Year : 2020  |  Volume : 68  |  Issue : 2  |  Page : 327--332

Correlation between Arteriole Membrane Potential and Cerebral Vasospasm after Subarachnoid Hemorrhage in Rats


1 Department of Neurosurgery, First Affiliated Hospital of Medical College, Shihezi University, Xinjiang, People's Republic of China
2 Physical Examination Department, First Affiliated Hospital of Medical College, Shihezi University, Xinjiang, People's Republic of China

Correspondence Address:
Dr. Dong Zhao
Department of Neurosurgery, First Affiliated Hospital of Medical College, Shihezi University, Xinjiang, 832008
People's Republic of China
Yezhong Wang
Department of Neurosurgery, First Affiliated Hospital of Medical College, Shihezi University, Xinjiang, 832008
People's Republic of China
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0028-3886.280652

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Objectives: Microvessel constriction plays an important role in delayed cerebral ischemia after aneurismal subarachnoid hemorrhage (SAH). This constriction has been demonstrated in both animal model and clinical operation. The present study examined the time-related membrane potential (Em) alteration of arterioles isolated from SAH model rats and the correlation between the potential alteration of arterioles and the diameter of basilar artery. Materials and Methods: Sprague–Dawley rats (n = 90), weighing 300 g to 350 g, were divided into t control, sham, and SAH groups. In the SAH group, blood was injected into the prechiasmatic cistern of the rats. The Em of arterioles and basilar artery diameter was measured using whole-cell clamp recordings and pressure myograph, respectively, 1, 3, 5, 7, and 14 days after SAH. The correlation was evaluated using Pearson correlation coefficients. Results: The Em of arterioles in the SAH group depolarized on days 3, 5, and 7, and peaked on day 7. The diameters significantly decreased on days 1, 3, 5, 7, and 14, and the smallest diameter was observed on day 7. A significant correlation between potential alteration of arterioles and diameter of basilar artery was found. Conclusions: Similar to the artery, arteriole constriction is also involved in the pathophysiological events of delayed cerebral ischemia.






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