The Influence of Vascular Disease on Cognitive Performance in the Preclinical and Early Phases of Alzheimer’s DiseaseLaukka E.J. · Fratiglioni L. · Bäckman L.
Aging Research Center, Department of Neurobiology, Care Sciences, and Society, Karolinska Institutet, Stockholm, Sweden
Background/Aim: Alzheimer’s disease (AD) is one of the most important causes of old-age cognitive impairment. We aimed to examine the influence of history of vascular disease on cognition in preclinical and early AD. Methods: Participants from a population-based study were assessed twice with a test of global cognition. The study sample was nondemented at baseline. Three years later, 138 persons were diagnosed with AD and 783 persons remained nondemented. History of vascular disease (heart disease, cerebrovascular disease) was assessed at both occasions. Results: Analyses of covariance revealed significant main effects of group (AD; comparison group) and vascular disease (present; absent) at baseline and follow-up (p < 0.01). At follow-up, a significant interaction indicated that the AD group was more negatively affected by vascular disease (p < 0.01). The fastest rate of cognitive decline was observed for those persons with preclinical AD who had new recordings of vascular disease. Conclusions: History of vascular disease has a negative impact on cognition in old age. This effect is most pronounced in persons in the earliest clinical phases of AD. Treatment of vascular risk factors in early AD might postpone time of diagnosis and slow down dementia progression.
Erika Jonsson Laukka
Aging Research Center
SE–113 30 Stockholm (Sweden)
Tel. +46 8 690 5851, Fax +46 8 690 6889, E-Mail Erika.Jonsson.Laukka@ki.se
Accepted: April 14, 2010
Published online: June 4, 2010
Number of Print Pages : 6
Number of Figures : 1, Number of Tables : 2, Number of References : 37
Dementia and Geriatric Cognitive Disorders
Vol. 29, No. 6, Year 2010 (Cover Date: July 2010)
Journal Editor: Chan-Palay V. (New York, N.Y.)
ISSN: 1420-8008 (Print), eISSN: 1421-9824 (Online)
For additional information: http://www.karger.com/DEM