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A Novel Mouse Model for Cerebral Venous Sinus Thrombosis
- Source :
- Translational stroke research. 12(6)
- Publication Year :
- 2020
-
Abstract
- Cerebral venous sinus thrombosis (CVST) is an uncommon cause of stroke resulting in parenchymal injuries associated with heterogeneous clinical symptoms and prognosis. Therefore, an experimental animal model is required to further study underlying mechanisms involved in CVST. This study is aimed at developing a novel murine model suitable and relevant for evaluating injury patterns during CVST and studying its clinical aspects. CVST was achieved in C57BL/6J mice by autologous clot injection into the superior sagittal sinus (SSS) combined with bilateral ligation of external jugular veins. Clot was prepared ex vivo using thrombin before injection. On days 1 and 7 after CVST, SSS occlusion and associated-parenchymal lesions were monitored using different modalities: in vivo real-time intravital microscopy, magnetic resonance imaging (MRI), and immuno-histology. In addition, mice were subjected to a neurological sensory-motor evaluation. Thrombin-induced clot provided fibrin- and erythrocyte-rich thrombi that lead to reproducible SSS occlusion at day 1 after CVST induction. On day 7 post-CVST, venous occlusion monitoring (MRI, intravital microscopy) showed that initial injected-thrombus size did not significantly change demonstrating no early spontaneous recanalization. Microscopic histological analysis revealed that SSS occlusion resulted in brain edema, extensive fibrin-rich venular thrombotic occlusion, and ischemic and hemorrhagic lesions. Mice with CVST showed a significant lower neurological score on post-operative days 1 and 7, compared to the sham-operated group. We established a novel clinically CVST-relevant model with a persistent and reproducible SSS occlusion responsible for symptomatic ischemic and hemorrhagic lesions. This method provides a reliable model to study CVST physiopathology and evaluation of therapeutic new regimens.
- Subjects :
- 0301 basic medicine
medicine.medical_specialty
Fibrin
03 medical and health sciences
Mice
Sinus Thrombosis, Intracranial
0302 clinical medicine
Occlusion
medicine
Animals
Cerebral venous sinus thrombosis
Stroke
medicine.diagnostic_test
biology
business.industry
General Neuroscience
Magnetic resonance imaging
medicine.disease
Magnetic Resonance Imaging
SSS
Mice, Inbred C57BL
Disease Models, Animal
030104 developmental biology
biology.protein
Neurology (clinical)
Radiology
Cardiology and Cardiovascular Medicine
business
Superior Sagittal Sinus
030217 neurology & neurosurgery
Intravital microscopy
Superior sagittal sinus
Subjects
Details
- ISSN :
- 1868601X
- Volume :
- 12
- Issue :
- 6
- Database :
- OpenAIRE
- Journal :
- Translational stroke research
- Accession number :
- edsair.doi.dedup.....ebaeb1be85d7aea1e79579100840e53b