Stroke · 2015
Characterization of White Matter Injury in a Rat Model of Chronic Cerebral Hypoperfusion.
СтатьяПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод пока не подготовлен
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Choi Bo-Ryoung, Kim Dong-Hee, Back Dong Bin, Kang Chung Hwan, Moon Won-Jin, Han Jung-Soo, Choi Dong-Hee, Kwon Kyoung Ja, Shin Chan Young, Kim Bo-Ram, Lee Jongmin, Han Seol-Heui, Kim Hahn Young
Аннотация
BACKGROUND AND PURPOSE: Chronic cerebral hypoperfusion can lead to ischemic white matter injury resulting in vascular dementia. To characterize white matter injury in vascular dementia, we investigated disintegration of diverse white matter components using a rat model of chronic cerebral hypoperfusion.
METHODS: Chronic cerebral hypoperfusion was modeled in Wistar rats by permanent occlusion of the bilateral common carotid arteries. We performed cognitive behavioral tests, including the water maze task, odor discrimination task, and novel object test; histological investigation of neuroinflammation, oligodendrocytes, myelin basic protein, and nodal or paranodal proteins at the nodes of Ranvier; and serial diffusion tensor imaging. Cilostazol was administered to protect against white matter injury.
RESULTS: Diverse cognitive impairments were induced by chronic cerebral hypoperfusion. Disintegration of white matter was characterized by neuroinflammation, loss of oligodendrocytes, attenuation of myelin density, structural derangement at the nodes of Ranvier, and disintegration of white matter tracts. Cilostazol protected against cognitive impairments and white matter disintegration.
CONCLUSIONS: White matter injury induced by chronic cerebral hypoperfusion can be characterized by disintegration of diverse white matter components. Cilostazol might be a therapeutic strategy against white matter disintegration in patients with vascular dementia.
METHODS: Chronic cerebral hypoperfusion was modeled in Wistar rats by permanent occlusion of the bilateral common carotid arteries. We performed cognitive behavioral tests, including the water maze task, odor discrimination task, and novel object test; histological investigation of neuroinflammation, oligodendrocytes, myelin basic protein, and nodal or paranodal proteins at the nodes of Ranvier; and serial diffusion tensor imaging. Cilostazol was administered to protect against white matter injury.
RESULTS: Diverse cognitive impairments were induced by chronic cerebral hypoperfusion. Disintegration of white matter was characterized by neuroinflammation, loss of oligodendrocytes, attenuation of myelin density, structural derangement at the nodes of Ranvier, and disintegration of white matter tracts. Cilostazol protected against cognitive impairments and white matter disintegration.
CONCLUSIONS: White matter injury induced by chronic cerebral hypoperfusion can be characterized by disintegration of diverse white matter components. Cilostazol might be a therapeutic strategy against white matter disintegration in patients with vascular dementia.
Предметные рубрики MeSH
AnimalsBehavior, AnimalBrain IschemiaCarotid StenosisChronic DiseaseCilostazolCognitionDementia, VascularDiffusion Tensor ImagingDisease Models, AnimalHippocampusInflammationLeukoencephalopathiesMyelin Basic ProteinNeuroprotective AgentsNeuropsychological TestsOligodendrogliaRanvier's NodesRatsRats, WistarTetrazolesWhite Matter