title: A more consistent intraluminal rhesus monkey model of ischemic stroke.
abstract: Endovascular surgery is advantageous in experimentally induced ischemic stroke because it causes fewer cranial traumatic lesions than invasive surgery and can closely mimic the pathophysiology in stroke patients. However, the outcomes are highly variable, which limits the accuracy of evaluations of ischemic stroke studies. In this study, eight healthy adult rhesus monkeys were randomized into two groups with four monkeys in each group: middle cerebral artery occlusion at origin segment (M1) and middle cerebral artery occlusion at M2 segment. The blood flow in the middle cerebral artery was blocked completely for 2 hours using the endovascular microcoil placement technique (1 mm × 10 cm) (undetachable), to establish a model of cerebral ischemia. The microcoil was withdrawn and the middle cerebral artery blood flow was restored. A reversible middle cerebral artery occlusion model was identified by hematoxylin-eosin staining, digital subtraction angiography, magnetic resonance angiography, magnetic resonance imaging, and neurological evaluation. The results showed that the middle cerebral artery occlusion model was successfully established in eight adult healthy rhesus monkeys, and ischemic lesions were apparent in the brain tissue of rhesus monkeys at 24 hours after occlusion. The rhesus monkeys had symptoms of neurological deficits. Compared with the M1 occlusion group, the M2 occlusion group had lower infarction volume and higher neurological scores. These experimental findings indicate that reversible middle cerebral artery occlusion can be produced with the endovascular microcoil technique in rhesus monkeys. The M2 occluded model had less infarction and less neurological impairment, which offers the potential for application in the field of brain injury research.
authors: Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China.
authors: Bo
authors: B
authors: Zhao
authors: Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China.
authors: Guowei
authors: G
authors: Shang
authors: Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China.
authors: Jian
authors: J
authors: Chen
authors: Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China.
authors: Xiaokun
authors: X
authors: Geng
authors: Department of Anesthesiology, Xuanwu Hospital, Capital Medical University, Beijing, China.
authors: Xin
authors: X
authors: Ye
authors: Department of Anesthesiology, Xuanwu Hospital, Capital Medical University, Beijing, China.
authors: Guoxun
authors: G
authors: Xu
authors: Department of Laboratory Animal Science, Capital Medical University, Beijing, China.
authors: Ju
authors: J
authors: Wang
authors: Radiology Department, Beijing Youan Hospital, Capital Medical University, Beijing, China.
authors: Jiasheng
authors: J
authors: Zheng
authors: Radiology Department, Beijing Youan Hospital, Capital Medical University, Beijing, China.
authors: Hongjun
authors: H
authors: Li
authors: Wayne State University School of Medicine, Detroit, MI, USA.
authors: Fauzia
authors: F
authors: Akbary
authors: Department of Laboratory Animal Science, Capital Medical University, Beijing, China.
authors: Shengli
authors: S
authors: Li
authors: Department of Laboratory Animal Science, Capital Medical University, Beijing, China.
authors: Jing
authors: J
authors: Lu
authors: Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China.
authors: Feng
authors: F
authors: Ling
authors: Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China ; Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China.
authors: Xunming
authors: X
authors: Ji
keywords: brain injury; digital subtraction angiography; infarction; interventional therapy; magnetic resonance image; microcoil; model middle cerebral artery; nerve regeneration; neuroimaging; neuroregeneration; rhesus monkeys; stroke
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