P1.09 MILD COGNITIVE IMPAIRMENT IS ASSOCIATED WITH SYSTEMIC VASCULAR DYSFUNCTION

DOI

10.1016/j.artres.2013.10.040How to use a DOI?

Abstract

Aim: To evaluate vascular function and structure in subjects with mild cognitive impairment (MCI).

Methods: 58 MCI and 22 controls (age 74±5vs75±4years, men 45vs59% p=ns) were recruited. Endothelial function in the brachial artery (BA) was studied by flow-mediated dilation (FMD) and response to glyceryl trinitrate, (GTN), while large artery stiffness was measured as carotid-femoral pulse wave velocity (PWV).

Results: MCI and controls had a similar prevalence of established CV disease (14vs13%,p=ns) and traditional CV risk factors (hypertension 50vs54%, diabetes 13vs5%, dyslipidemia 28vs48%, smoking 4vs9%, p=ns for all). MCI showed higher blood pressure (BP) values than controls (pulse pressure 70±16vs62±12mmHg, mean BP 97±9vs91±8 mmHg, p<0.05 for both). PWV tended to be higher in controls compared to MCI (11.0±2.2vs9.9±2.4 m/s, p=0.07) but the difference was not significant after considering mean BP as covariate. MCI and controls showed similar BA diameter baseline shear rate (SR) and response to GTN. In MCI hyperemic SR and SR area under the curve were significantly lower (1591±831vs1175±673s⁻¹, 29.7±15,8*10³vs 21.1±14.9*10³, p<0.05 for all) and time to peak was delayed compared to controls (50±16 s59±16s, p<0.05). Mean FMD values, allometrically corrected for baseline BA diameter, were significantly reduced in MCI (4.5±2.9vs2.7±2.9%, p<0.01). The difference remained significant after considering age, mean BP, and SR area under the curve as covariates (p<0.01).

Conclusions: Patients with MCI showed a significant reduction in conduit artery endothelial function as well as in microcirculatory function. These data support the hypothesis that impaired systemic vascular function might hamper cognitive function.

Open Access

This is an open access article distributed under the CC BY-NC license.

Download article (PDF)
View full text (HTML)

TY  - JOUR
AU  - R.M. Bruno
AU  - L. Ghiadoni
AU  - F. Stea
AU  - F. Faita
AU  - S. Taddei
AU  - S. Del Turco
AU  - L. Maffei
AU  - G. Tognoni
AU  - E. Picano
AU  - R. Sicari
PY  - 2013
DA  - 2013/11/11
TI  - P1.09 MILD COGNITIVE IMPAIRMENT IS ASSOCIATED WITH SYSTEMIC VASCULAR DYSFUNCTION
JO  - Artery Research
SP  - 113
EP  - 113
VL  - 7
IS  - 3-4
SN  - 1876-4401
UR  - https://doi.org/10.1016/j.artres.2013.10.040
DO  - 10.1016/j.artres.2013.10.040
ID  - Bruno2013
ER  -