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Current Alzheimer Research

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ISSN (Print): 1567-2050
ISSN (Online): 1875-5828

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Research Article

Assessment of Persistent, Bioaccumulative and Toxic Organic Environmental Pollutants in Liver and Adipose Tissue of Alzheimer’s Disease Patients and Age-matched Controls

Author(s): Bhagyashree Manivannan, Manivannan Yegambaram, Samuel Supowit, Thomas G. Beach and Rolf U. Halden*

Volume 16, Issue 11, 2019

Page: [1039 - 1049] Pages: 11

DOI: 10.2174/1567205016666191010114744

Price: $65

Abstract

Background: Lifetime exposure to environmental (neuro) toxicants may contribute to the pathogenesis of Alzheimer’s Disease (AD). Since many contaminants do not cross the blood-brain barrier, brain tissue alone cannot serve to assess the spectrum of environmental exposures.

Methods: We used liquid and gas chromatography tandem mass spectrometry to monitor, in postmortem liver and adipose tissues of AD patients and age-matched controls, the occurrence and concentrations of 11 environmental contaminants.

Results: Seven toxicants were detected at 100% frequency: p,p'-DDE, dieldrin, triclosan, methylparaben, bisphenol A, fipronil and tetrabromobisphenol A (TBBPA). Intra-individual, tissuedependent differences were detected for triclosan, methylparaben, fipronil and TBBPA. High concentrations of p,p’-DDE and dieldrin were observed in adipose tissue when compared to liver values for both AD cases and controls.

Conclusion: This study provides vital data on organ-specific human body burdens to select analytes and demonstrate the feasibility of analyzing small sample quantities for toxicants suspected to constitute AD risk factors.

Keywords: Alzheimer's disease, environmental (neuro) toxicants, pollutants, contaminants, liquid and gas chromatography tandem mass spectrometry, liver, adipose tissue.

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