Abstract：
:New lines of evidence suggest that less than 10% of neurodegenerative diseases have a strict genetic aetiology and other factors may be prevalent. Environmental exposures to potentially toxic elements appear to be a risk factor for Parkinson's, Alzheimer's and sclerosis diseases. This study proposes a multidisciplinary approach combining neurosciences, psychology and environmental sciences while integrating socio-economic, neuropsychological, environmental and health data. We present the preliminary results of a neuropsychological assessment carried out in elderly residents of the industrial city of Estarreja. A battery of cognitive tests and a personal questionnaire were administered to the participants. Multivariate analysis and multiple linear regression analysis were used to identify potential relationships between the cognitive status of the participants and environmental exposure to potentially toxic elements. The results suggest a relationship between urinary PTEs levels and the incidence of cognitive disorders. They also point towards water consumption habits and profession as relevant factors of exposure. Linear regression models show that aluminium (R 2 = 38%), cadmium (R 2 = 11%) and zinc (R 2 = 6%) are good predictors of the scores of the Mini-Mental State Examination cognitive test. Median contents (µg/l) in groundwater are above admissible levels for drinking water for aluminium (371), iron (860), manganese (250), and zinc (305). While the World Health Organization does not provide health-based reference values for aluminium, results obtained from this study suggest that it may have an important role in the cognitive status of the elderly. Urine proved to be a suitable biomarker of exposure both to elements with low and high excretion rates.
journal_name
Environ Geochem Healthjournal_title
Environmental geochemistry and healthauthors
Cabral Pinto MMS,Marinho-Reis AP,Almeida A,Ordens CM,Silva MMVG,Freitas S,Simões MR,Moreira PI,Dinis PA,Diniz ML,Ferreira da Silva EA,Condesso de Melo MTdoi
10.1007/s10653-017-9928-3subject
Has Abstractpub_date
2018-10-01 00:00:00pages
1767-1784issue
5eissn
0269-4042issn
1573-2983pii
10.1007/s10653-017-9928-3journal_volume
40pub_type
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