Liu P, Wang P, Wang N, Sun X, Ding Y, Zhang G, Li M, Chen X. Establishment of a pMCAO model in SD rats and screening for behavioral indicators suitable for long-term monitoring.
Brain Inj 2024:1-11. [PMID:
38661324 DOI:
10.1080/02699052.2024.2346804]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 04/18/2024] [Indexed: 04/26/2024]
Abstract
OBJECTIVE
This study aimed to establish a permanent middle cerebral artery occlusion (pMCAO) model in rats to simulate the pathological process of stroke patients with no reperfusion. And screen highly sensitive items that could be used to detect long-term behavioral abilities in rat of intraluminal suture models.
METHOD
Established the pMCAO model then tested the rats for the bilateral asymmetry, modified neurological severity score, grid-walking, cylinder, rotating, and water maze test from week 1 to week 16.
RESULTS
The infarct volume of the model rats was stable (26.72% ±1.86%). The sensorimotor test of bilateral asymmetry, grid-walking, cylinder, and mNSS test showed significant differences from week 1 to week 16 after injury. The water maze test at week 16 showed significant differences in spatial exploration and learning ability between the two groups. We confirmed that there was no significant difference between MRI and TTC staining in detecting the degree of brain injury, which facilitated the diversity of subsequent detection methods. We also confirmed that at multiple time points, grid, cylinder and water maze test were significantly positively correlated with rat brain infarct volume.
CONCLUSION
They are suitable for the long-term observation of behaviors in the sequela stage of stroke in rat.
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