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Association of polymorphisms and reduced expression levels of the NR4A2 gene with Parkinson's disease in a Mexican population.

Abstract：

INTRODUCTION:The NR4A2 transcription factor is important in the development, survival and phenotype of dopaminergic neurons and it is postulated as a possible biomarker for Parkinson's disease (PD). Therefore, our aim was to analyze in a sample of a Mexican population with idiopathic PD, mutations (in two hotspot mutation regions) and two polymorphisms (rs34884856 in promotor and rs35479735 intronic regions) of the NR4A2 gene. We also evaluate the levels of NR4A2 gene expression in peripheral blood for a Mexican population, and identify whether they are associated with NR4A2 gene polymorphisms. METHODS:We conducted a case-control study, which included 227 idiopathic PD cases and 454 unrelated controls. Genetic variants of the NR4A2 gene were genotyped by high-resolution melting (HRM) and validated by an automated sequencing method. The gene expression was performed in peripheral blood using a real-time polymerase chain reaction. RESULTS:The rs35479735 polymorphism was associated with a higher risk of developing PD. In addition, NR4A2 gene expression was significantly decreased in patients with PD. Linkage disequilibrium analysis showed a haplotype H4 (3C-3G) that showed lower levels of expression, and contained the risk alleles for both polymorphisms. CONCLUSIONS:In summary, this is the first study in a Mexican population that considers the analysis of NR4A2 in patients with PD. An association was identified between genotype and mRNA expression levels of NR4A2 in patients with PD. These results suggest that polymorphisms and expression of the NR4A2 gene could play an important role in the risk of developing PD in Mexican populations.

journal_name

J Neurol Sci

journal_title

Journal of the neurological sciences

authors

Ruiz-Sánchez E,Yescas P,Rodríguez-Violante M,Martínez-Rodríguez N,Díaz-López JN,Ochoa A,Valdes-Rojas SS,Magos-Rodríguez D,Rojas-Castañeda JC,Cervantes-Arriaga A,Canizales-Quinteros S,Rojas P

doi

10.1016/j.jns.2017.05.029

subject

Has Abstract

pub_date

2017-08-15 00:00:00

pages

58-63

eissn

0022-510X

issn

1878-5883

pii

S0022-510X(17)30325-8

journal_volume

379

pub_type

杂志文章

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