Abstract
Sporadic Parkinson's disease (PD) is a neurodegenerative disorder of unknown etiology. In recent years, it has been established that a genetic component underlies different forms of the disease. For instance, mitochondrial genome variants have been implicated in the pathogenesis of the PD. To determine the association of tRNA(Gln) 4336 and 8701A>G (ATP6: Thr59Ala) mitochondrial DNA polymorphisms with the presence of PD in Mexican mestizo patients. This was a cross-sectional study in which patients were recruited from four tertiary-care level hospitals in Mexico. Genotyping was performed using real-time PCR with TaqMan genotyping assays. Genotypes were confirmed by automated sequencing. The 4336C allele of the tRNAGln gene was present at a low frequency, and the 8701G allele of the MT-ATP6 gene was not associated with PD. The 4336C variant of the tRNAGln gene was uncommon in the study population, and 8701A/G of MT-ATP6 was not associated with PD in Mexican Mestizos.
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