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Rösler TW, Salama M, Shalash AS, Khedr EM, El-Tantawy A, Fawi G, El-Motayam A, El-Seidy E, El-Sherif M, El-Gamal M, Moharram M, El-Kattan M, Abdel-Naby M, Ashour S, Müller U, Dempfle A, Kuhlenbäumer G, Höglinger GU. K-variant BCHE and pesticide exposure: Gene-environment interactions in a case-control study of Parkinson's disease in Egypt. Sci Rep 2018; 8:16525. [PMID: 30410011 PMCID: PMC6224461 DOI: 10.1038/s41598-018-35003-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 10/29/2018] [Indexed: 01/07/2023] Open
Abstract
Pesticide exposure is associated with increased risk of Parkinson’s disease (PD). We investigated in Egypt whether common variants in genes involved in pesticide detoxification or transport might modify the risk of PD evoked by pesticide exposure. We recruited 416 PD patients and 445 controls. Information on environmental factors was collected by questionnaire-based structured interviews. Candidate single-nucleotide polymorphisms (SNPs) in 15 pesticide-related genes were genotyped. We analyzed the influence of environmental factors and SNPs as well as the interaction of pesticide exposure and SNPs on the risk of PD. The risk of PD was reduced by coffee consumption [OR = 0.63, 95% CI: 0.43–0.90, P = 0.013] and increased by pesticide exposure [OR = 7.09, 95% CI: 1.12–44.01, P = 0.036]. The SNP rs1126680 in the butyrylcholinesterase gene BCHE reduced the risk of PD irrespective of pesticide exposure [OR = 0.38, 95% CI: 0.20–0.70, P = 0.002]. The SNP rs1803274, defining K-variant BCHE, interacted significantly with pesticide exposure (P = 0.007) and increased the risk of PD only in pesticide-exposed individuals [OR = 2.49, 95% CI: 1.50–4.19, P = 0.0005]. The K-variant BCHE reduces serum activity of butyrylcholinesterase, a known bioscavenger for pesticides. Individuals with K-variant BCHE appear to have an increased risk for PD when exposed to pesticides.
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Affiliation(s)
- Thomas W Rösler
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany.,Department of Neurology, Technical University of Munich, Munich, Germany
| | - Mohamed Salama
- Medical Experimental Research Center (MERC), Mansoura University, Mansoura, Egypt.,Toxicology Department, Mansoura University, Mansoura, Egypt
| | - Ali S Shalash
- Department of Neurology, Ain Shams University, Cairo, Egypt
| | - Eman M Khedr
- Department of Neurology, Assiut University, Assiut, Egypt
| | | | - Gharib Fawi
- Department of Neurology, Sohag University, Sohag, Egypt
| | | | - Ehab El-Seidy
- Department of Neurology, Tanta University, Tanta, Egypt
| | | | | | | | | | | | - Samia Ashour
- Department of Neurology, Ain Shams University, Cairo, Egypt
| | - Ulrich Müller
- Institute for Human Genetics, Justus Liebig University Giessen, Giessen, Germany
| | - Astrid Dempfle
- Institute of Medical Informatics and Statistics, Kiel University, Kiel, Germany
| | | | - Günter U Höglinger
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany. .,Department of Neurology, Technical University of Munich, Munich, Germany. .,Munich Cluster for Systems Neurology (SyNergy), Ludwig-Maximilians-University, Munich, Germany.
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Scholz SW, Bras J. Genetics Underlying Atypical Parkinsonism and Related Neurodegenerative Disorders. Int J Mol Sci 2015; 16:24629-55. [PMID: 26501269 PMCID: PMC4632769 DOI: 10.3390/ijms161024629] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Revised: 10/01/2015] [Accepted: 10/09/2015] [Indexed: 12/14/2022] Open
Abstract
Atypical parkinsonism syndromes, such as dementia with Lewy bodies, multiple system atrophy, progressive supranuclear palsy and corticobasal degeneration, are neurodegenerative diseases with complex clinical and pathological features. Heterogeneity in clinical presentations, possible secondary determinants as well as mimic syndromes pose a major challenge to accurately diagnose patients suffering from these devastating conditions. Over the last two decades, significant advancements in genomic technologies have provided us with increasing insights into the molecular pathogenesis of atypical parkinsonism and their intriguing relationships to related neurodegenerative diseases, fueling new hopes to incorporate molecular knowledge into our diagnostic, prognostic and therapeutic approaches towards managing these conditions. In this review article, we summarize the current understanding of genetic mechanisms implicated in atypical parkinsonism syndromes. We further highlight mimic syndromes relevant to differential considerations and possible future directions.
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Affiliation(s)
- Sonja W Scholz
- Neurodegenerative Diseases Research Unit, Laboratory of Neurogenetics, National Institute of Neurological Disorders and Stroke, National Institutes of Health, 35 Convent Drive, Bethesda, MD 20892, USA.
- Department of Neurology, Johns Hopkins University School of Medicine, 1800 Orleans Street, Baltimore, MD 21287, USA.
| | - Jose Bras
- Department of Molecular Neuroscience, University College London, Institute of Neurology, Queen Square House, London WC1N 3BG, UK.
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