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http://dx.doi.org/10.5392/JKCA.2019.19.07.186

Transient Middle Cerebral Artery Occlusion Model in Mouse using Nylon Thread  

Lim, Byung-Chul (강원대학교 의학과대학원 신경외과학교실)
Sung, Ji-Hee (강원대학교 의학과대학원 신경외과학교실)
Kim, Ha-Na (강원대학교 의학과대학원 진단검사의학교실)
Park, Seoung-Woo (강원대학교 의학과대학원 신경외과학교실)
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Abstract
Introduction: In aged people, stroke incidence is increased. But standardized experimental animal protocol study for the research of stroke therapy is rare. There is little report on the success rate of cerebral artery occlusion model using standardized Nylon thread length of precise thread end-size controlled. Method: In this study, the operator intended the occlusion of middle cerebral artery (MCA) using $0.18{\pm}0.02mm$ end 5-0 Nylon thread. Middle cerebral artery occlusion was induced for 60min under isoflurane anesthesia. After 60min, the operator removed the Nylon thread and reperfusion was induced for 23hrs. The mice was killed 23hrs after reperfusion and infarction area of brain was confirmed by 1.5% TTC (2,3,5-tryphenyl tetrazolium chloride) staining. Results: According to end size and insert length of Nylon thread, Middle cerebral artery occlusion (n=50), internal carotid artery occlusion (n= 14), distal middle cerebral artery occlusion (n= 36), anterior cerebral artery (n= 1) were induced. And no infarction (n= 50) was observed. Conclusion: According to weight of mice, the operator induced reversible cerebral artery occlusion model by different insert length (30.0~36.9g : 9.0mm, 37.0~40.0g : 9.5mm) of Nylon thread. Success of cerebral artery occlusion model was confirmed by checking infarction area using TTC staining. The success rate (66.9%, 101/151) of reversible cerebral artery occlusion model in the mouse and the operational conditions are shown.
Keywords
Ischemia; Reversible Cerebral Artery Occlusion; Infarct; Reperfusion; MCAO model; Nylon thread;
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