Structural brain changes and cognition in relation to markers of vascular dysfunction

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• 作者：Julia Miralbell^a ; Juan José ; Soriano^a ; Gabriela Spulber^b ; Elena Ló ; pez-Cancio^c ; Juan Francisco Arenillas^d ; Nú ; ria Bargalló ; ^e ; Amparo Galá ; n^f ; Maria Teresa Barrios^g ; Cynthia Cá ; ceres^c ; Maria Teresa Alzamora^h ; Guillem Pera^h ; Miia Kivipelto^b ; Lars-Olof Wahlundⁱ ; Antoni Dá ; valos^c ; Maria Mataró ; ^a ; ^j ; ^{mmataro@ub.edu}
• 关键词：Cerebrovascular disease ; Risk factors ; MRI ; White matter ; Inflammation ; Fibrinolysis
• 刊名：Neurobiology of Aging
• 出版年：2012
• 期刊代码：202_01974580
• 类别：med
• 出版时间：May, 2012
• 卷：33
• 期：5
• 页码：1003.e9-1003.e17
• 文件大小：818 K

摘要

The aim was to investigate the relationship between blood markers of vascular dysfunction with brain microstructural changes and cognition. Eighty-six participants from the Barcelona-Asymptomatic Intracranial Atherosclerosis (AsIA) neuropsychology study were included. Subjects were 50-65 years old, free from dementia and without history of vascular disease. We assessed correlations of blood levels of inflammatory biomarkers (C-reactive protein [CRP] and resistin) and fibrinolysis inhibitors (plasminogen activator inhibitor-1 [PAI-1] and A-lipoprotein (Lp (a)) with fractional anisotropy (FA) measurements of diffusion tensor images (DTI), regional gray matter (GM) volumes and performance in several cognitive domains. Increasing levels of C-reactive protein and PAI-1 levels were associated with white matter (WM) integrity loss in corticosubcortical pathways and association fibers of frontal and temporal lobes, independently of age, sex and vascular risk factors. PAI-1 was also related to lower speed and visuomotor/coordination. None of the biomarkers were related to gray matter volume changes. Our findings suggest that inflammation and dysregulation of the fibrynolitic system may be involved in the pathological mechanisms underlying the WM damage seen in cerebrovascular disease and subsequent cognitive impairment.