Vascular Function in Alzheimer's Disease and Vascular Dementia.
We investigated vascular functioning in patients with a clinical and radiological diagnosis of either Alzheimer's disease (AD) or vascular dementia (VaD) and examined a possible relationship between vascular function and cognitive status. Twenty-seven patients with AD, 23 patients with VaD, and 26 healthy control patients underwent measurements of flow-mediated dilation (FMD), ankle-brachial index (ABI), cardioankle vascular index (CAVI), and intima-media thickness (IMT). The FMD was significantly lower in patients with AD or VaD compared to controls. There were no significant differences in ABI, CAVI, or IMT among the 3 groups. A significant correlation was found between Mini-Mental State Examination (MMSE) scores and FMD. Furthermore, a multiple regression analysis revealed that FMD was significantly predicted by MMSE scores. These results suggest that endothelial involvement plays a role in AD pathogenesis, and FMD may be more sensitive than other surrogate methods (ABI, CAVI, and IMT) for detecting early-stage atherosclerosis and/or cognitive decline.
Division of Neurology, Graduate School of Medicine, Kobe University, Chuo-ku, Kobe, Japan.
Hisatsugu
H
Tachibana
Division of Neurology, Graduate School of Medicine, Kobe University, Chuo-ku, Kobe, Japan washida@med.kobe-u.ac.jp.
Kazuo
K
Washida
Division of Neurology, Graduate School of Medicine, Kobe University, Chuo-ku, Kobe, Japan.
Hisatomo
H
Kowa
Division of Neurology, Graduate School of Medicine, Kobe University, Chuo-ku, Kobe, Japan.
Fumio
F
Kanda
Division of Neurology, Graduate School of Medicine, Kobe University, Chuo-ku, Kobe, Japan.
Tatsushi
T
Toda
D000368:Aged; D000544:Alzheimer Disease / Q000150:complications*; D055109:Ankle Brachial Index; D059168:Carotid Intima-Media Thickness; D015140:Dementia, Vascular / Q000150:complications*; D005260:Female; D006801:Humans; D008297:Male; D008609:Mental Status Schedule / Q000706:statistics & numerical data
Alzheimer’s disease; arterial stiffness; endothelial function; flow-mediated dilation; vascular dementia