Analysis of functional polymorphisms of metalloproteinase genes in persons with vascular dementia and Alzheimer's disease.
J Gerontol A Biol Sci Med Sci
; 61(10): 1065-9, 2006 Oct.
Article
em En
| MEDLINE
| ID: mdl-17077200
ABSTRACT
BACKGROUND:
Vascular dementia (VAD) and Alzheimer's disease (AD) may share common neuropathological mechanisms. Matrix metalloproteinases (MMPs) may induce destruction of the extracellular matrix, neuronal dysfunction, and death. Increased expression of these molecules has been found in a number of neurological diseases, including cerebral ischemia and AD. Expression and activity of MMPs may be genetically influenced by common polymorphisms in the promoter regions of the corresponding genes. The purpose of this study was to evaluate whether functional polymorphisms of MMP genes are associated with dementia.METHODS:
This is a cross-sectional study including a total of 599 individuals 193 with VAD, 183 with AD, and 223 controls. Polymorphisms of the MMP-1, MMP-3, and MMP-9 genes were studied.RESULTS:
MMP-1 2G2G, MMP-1 1G2G, MMP-3 5A5A, and MMP-9 TT genotypes were significantly and independently associated with VAD (odds ratio [OR] 2.5, 95% confidence interval [CI] 1.4-4.4, OR = 1.7, 95% CI, 1.0-2.7, OR = 2.9, 95% CI, 1.5-5.9, and OR = 6.8, 95% CI, 1.3-35.1, respectively). MMP-1 2G2G and MMP-3 5A5A genotypes were associated with increased risk of AD only in persons who carry the apolipoprotein E (APOE) epsilon4 allele (OR = 6.0, 95% CI, 2.3-15.5, and OR = 14.3, 95% CI, 3.2-63.0, respectively). Interestingly, the odds of VAD and AD was further increased in persons concomitantly carrying more than one MMP gene variation, compared to individuals that only had one high-risk genotype.CONCLUSIONS:
Our study suggests that MMP gene polymorphisms are associated with VAD and AD, although these results need to be treated with caution until replicated. MMP genotypes may influence the risk of dementia and merit further investigation as potential genetic markers of disease.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Demência Vascular
/
Metaloproteinases da Matriz
/
Doença de Alzheimer
Tipo de estudo:
Etiology_studies
/
Observational_studies
/
Prevalence_studies
/
Risk_factors_studies
Limite:
Aged
/
Aged80
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
J Gerontol A Biol Sci Med Sci
Assunto da revista:
GERIATRIA
Ano de publicação:
2006
Tipo de documento:
Article
País de afiliação:
Itália