Structural brain changes and cognition in relation to markers of vascular dysfunction.
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.
Department of Psychiatry and Clinical Psychobiology, University of Barcelona, Barcelona, Spain.
Julia
J
Miralbell
Juan José
JJ
Soriano
Gabriela
G
Spulber
Elena
E
López-Cancio
Juan Francisco
JF
Arenillas
Núria
N
Bargalló
Amparo
A
Galán
Maria Teresa
MT
Barrios
Cynthia
C
Cáceres
Maria Teresa
MT
Alzamora
Guillem
G
Pera
Miia
M
Kivipelto
Lars-Olof
LO
Wahlund
Antoni
A
Dávalos
Maria
M
Mataró
D000368:Aged; D000375:Aging / Q000097:blood / Q000473:pathology; D001921:Brain / Q000098:blood supply / Q000473:pathology* / Q000503:physiopathology; D002536:Cerebral Arteries / Q000503:physiopathology; D002561:Cerebrovascular Disorders / Q000097:blood* / Q000453:epidemiology / Q000503:physiopathology*; D003072:Cognition Disorders / Q000097:blood* / Q000453:epidemiology / Q000473:pathology*; D015897:Comorbidity / Q000639:trends; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009413:Nerve Fibers, Myelinated / Q000473:pathology; D011237:Predictive Value of Tests; D011597:Psychomotor Performance / Q000502:physiology