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Canine model of ischemic stroke with permanent middle cerebral artery occlusion: clinical features, magnetic resonance imaging, histopathology, and immunohistochemistry
Journal of Veterinary Science ; : 75-85, 2015.
Article in English | WPRIM | ID: wpr-206910
ABSTRACT
The purpose of this study was to identify time-related changes in clinical, MRI, histopathologic, and immunohistochemical findings associated with ischemic stroke in dogs. Additionally, the association of cerebrospinal fluid (CSF) and tissue levels of interleukin (IL)-6 with clinical prognosis was assessed. Ischemic stroke was induced by permanent middle cerebral artery occlusion (MCAO) in nine healthy experimental dogs. The dogs were divided into three groups according to survival time and duration of the experimental period group A (survived only 1 day), group B (1-week experimental period), and group C (2-week experimental period). Neurologic status was evaluated daily. Magnetic resonance imaging (MRI) was performed according to a predetermined schedule. Concentration of IL-6 in CSF was measured serially after ischemic stroke. Postmortem examination was performed for all experimental dogs. During histopathological examination, variable degrees of cavitation and necrosis due to neuronal cytopathic effects, such as pyknotic nuclei and cytoplasmic shrinkage, were observed on the affected side of the cerebral cortex in all dogs. Immunohistochemistry specific for IL-6 showed increased expression in the ischemic lesions. CSF IL-6 concentrations and ischemic lesion volumes 1 day after ischemic stroke were significantly higher in group A compared to groups B and C.
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Full text: Available Index: WPRIM (Western Pacific) Main subject: Immunohistochemistry / Magnetic Resonance Imaging / Brain Ischemia / Stroke / Infarction, Middle Cerebral Artery Type of study: Prognostic study Limits: Animals Language: English Journal: Journal of Veterinary Science Year: 2015 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Immunohistochemistry / Magnetic Resonance Imaging / Brain Ischemia / Stroke / Infarction, Middle Cerebral Artery Type of study: Prognostic study Limits: Animals Language: English Journal: Journal of Veterinary Science Year: 2015 Type: Article