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2009•European Journal of NeurologyOpen access

Paraoxonase 1 (PON1) polymorphisms and risk for essential tremor

Elena García‐Martín, C. Martínez, Hortensia Alonso‐Navarro, Julián Benito‐León, Inmaculada Puertas, Lluisa Rubio, Tomás López‐Alburquerque, José A. G. Agúndez, Félix Javier Jiménez‐Jiménez

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Abstract

BACKGROUND: The polymorphic enzyme human serum paraoxonase 1 (PON1), encoded by the gene PON1 (chromosome 7q21.3), plays a major role in the metabolism of organophosphorus compounds. We investigated the possible association between the PON1 genotype and allelic variants of the polymorphisms Leu55Met and Glu192Arg, and the risk for essential tremor (ET). METHODS: We studied the frequency of the PON1 genotypes and allelic variants in 201 patients with ET and 220 healthy controls using a PCR-RLFP method. RESULTS: The frequencies of the PON1 genotypes and allelic variants of the polymorphisms Leu55Met and Gln192Arg did not differ significantly between patients with ET and controls. These polymorphisms were unrelated with the age of onset of ET. CONCLUSIONS: PON1 polymorphisms are not related with the risk for ET.

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BACKGROUND: The polymorphic enzyme human serum paraoxonase 1 (PON1), encoded by the gene PON1 (chromosome 7q21.3), plays a major role in the metabolism of organophosphorus compounds. We investigated the possible association between the PON1 genotype and allelic variants of the polymorphisms Leu55Met and Glu192Arg, and the risk for essential tremor (ET). METHODS: We studied the frequency of the PON1 genotypes and allelic variants in 201 patients with ET and 220 healthy controls using a PCR-RLFP method. RESULTS: The frequencies of the PON1 genotypes and allelic variants of the polymorphisms Leu55Met and Gln192Arg did not differ significantly between patients with ET and controls. These polymorphisms were unrelated with the age of onset of ET. CONCLUSIONS: PON1 polymorphisms are not related with the risk for ET.

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Available abstract

BACKGROUND: The polymorphic enzyme human serum paraoxonase 1 (PON1), encoded by the gene PON1 (chromosome 7q21.3), plays a major role in the metabolism of organophosphorus compounds. We investigated the possible association between the PON1 genotype and allelic variants of the polymorphisms Leu55Met and Glu192Arg, and the risk for essential tremor (ET). METHODS: We studied the frequency of the PON1 genotypes and allelic variants in 201 patients with ET and 220 healthy controls using a PCR-RLFP method. RESULTS: The frequencies of the PON1 genotypes and allelic variants of the polymorphisms Leu55Met and Gln192Arg did not differ significantly between patients with ET and controls. These polymorphisms were unrelated with the age of onset of ET. CONCLUSIONS: PON1 polymorphisms are not related with the risk for ET.

Key concepts: PON1, Paraoxonase, Genotype, Allele, Genetics, Medicine, Polymorphism (computer science), Allele frequency

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