Association of amine biomarkers with incident dementia and Alzheimer's disease in the Framingham Study

Autor: Martin G. Larson, Qiong Yang, Galit Weinstein, Vincent Chouraki, Shuo Li, Alexa S. Beiser, Robert E. Gerszten, Sudha Seshadri, Thomas J. Wang, Ramachandran S. Vasan, Sarah R. Preis
Rok vydání: 2017
Předmět:
Zdroj: Alzheimer's & Dementia. 13:1327-1336
ISSN: 1552-5279
1552-5260
Popis: Introduction The identification of novel biomarkers associated with Alzheimer's disease (AD) could provide key biological insights and permit targeted preclinical prevention. We investigated circulating metabolites associated with incident dementia and AD using metabolomics. Methods Plasma levels of 217 metabolites were assessed in 2067 dementia-free Framingham Offspring Cohort participants (mean age = 55.9 ± 9.7 years; 52.4% women). We studied their associations with future dementia and AD risk in multivariate Cox models. Results Ninety-three participants developed incident dementia (mean follow-up = 15.6 ± 5.2 years). Higher plasma anthranilic acid levels were associated with greater risk of dementia (hazard ratio [HR] = 1.40; 95% confidence interval [CI] = [1.15–1.70]; P = 8.08 × 10 −4 ). Glutamic acid (HR = 1.38; 95% CI = [1.11–1.72]), taurine (HR = 0.74; 95% CI = [0.60–0.92]), and hypoxanthine (HR = 0.74; 95% CI = [0.60–0.92]) levels also showed suggestive associations with dementia risk. Discussion We identified four biologically plausible, candidate plasma biomarkers for dementia. Association of anthranilic acid implicates the kynurenine pathway, which modulates glutamate excitotoxicity. The associations with hypoxanthine and taurine strengthen evidence that uric acid and taurine may be neuroprotective.
Databáze: OpenAIRE