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Associations of plasma homocysteine and lipoprotein-associated phospholipase A2 levels with dementia
Pages: 342-346
Year: Issue:  4
Journal: International Journal of Cerebrovascular Diseases

Abstract: ObjectiveTo investigate the associations of plasma homocysteine (Hcy) and lipoprotein-associated phospholipase A2 (Lp-PLA2) levels with dementia.MethodsThe patients with dementia admitted to hospital were enrolled retrospectively.They were divided into a vascular dementia (VaD) group, a mixed dementia (MD) group, and an Alzheimer's disease (AD) group according to the Hachinski Ischemic Score, and the dementia severity was further divided into a mild group, a moderate group and a severe group according to the Mini-Mental State Examination.The non-demented patients hospitalized during the same period were selected as controls.The demographics, vascular risk factors, and plasma Hcy and Lp-PLA2 levels in each group were compared.Logistic regression analysis was used to determine the independent associations of the plasma Hcy and Lp-PLA2 levels with the risk of dementia and severity.ResultsA total of 125 patients with dementia were enrolled, including 52 (41.6%) in the VaD group, 21 (16.8%) in the MD group, and 53 (41.6%) in the AD group.There were 49 patients (39.2%) in the mild group, 51 (40.8%) in the moderate group, and 25 (20%) in the severe group.A total of 40 non-demented patients were enrolled as control group.The plasma Hcy and Lp-PLA2 levels in VaD, MD and AD groups were significantly higher than those in the control group (all P<0.001).Multivariable logistic regression analysis showed that the advanced age (odds ratio[OR] 1.12, 95% confidence interval [CI] 1.03-1.21;P=0.010), high plasma Hcy level (OR 1.44, 95% CI 1.21-1.71;P<0.001), high Lp-PLA2 level (OR 1.01, 95% CI 1.00-1.02;P=0.006), and previous stroke (OR 4.29, 95% CI 1.50-12.36;P=0.007) were the independent risk factors for dementia;high Hcy level (OR 1.48, 95% CI 1.21-1.82;P<0.001, high Lp-PLA2 level (OR 1.01, 95% CI 1.00-1.03;P=0.002), and previous stroke (OR 152.78, 95% CI 20.41-999.97;P<0.001) were the independent risk factors for VaD;advanced age (OR 1.10, 95% CI 1.02-1.17;P=0.008) and high Hcy level (OR 1.41, 95% CI 1.25-1.58;P<0.001) were the independent risk factor for severe dementia.ConclusionsThe increased plasma Hcy and Lp-PLA2 levels are associated with dementia.Reducing the plasma Hcy and Lp-PLA2 levels may be beneficial to the treatment and prevention of dementia.
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