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Neurological Research
A Journal of Progress in Neurosurgery, Neurology and Neurosciences
Volume 33, 2011 - Issue 4
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Articles

Evaluating intra-genetic variants of DJ-1 among Parkinson's disease patients of Eastern India

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Pages 349-353 | Published online: 19 Jul 2013
 

Abstract

Objectives: Mutations in the DJ-1 gene have been described in autosomal recessive Parkinson's disease (PD) of European ancestry, Ashkenazi Jews, and Afro-Caribbean patients. Up to date, there is a lack of information about the prevalence of DJ-1 mutations among Indian PD patients.

Materials and methods: In this study, we examined for DJ-1 mutations in Eastern Indian PD patients. Exons (no. 2-7) and intron boundaries of the DJ-1 gene were screened in 300 individuals (PD, 150; controls, 150) by direct sequencing.

Results: A total of six intronic variants (IVS4+30T>G, IVS4+45G>A, IVS4+46G>A, IVS4-98G>A, IVS5+31G>A and IVS5+69G>C) were detected including one novel intronic change (IVS5+69G>C). Clinical features of the two patients exhibiting IVS5+69G>C (novel change) were compared and both were found to have early onset PD. IVS4+30T>G, IVS4+45G>A, and IVS4+46G>A were found to be present equally both in the patient and control cohorts. We did not find any DJ-1 mutations in our study.

Conclusion: Our results suggest that, unlike Parkin, pathogenic DJ-1 mutations seem to be restricted in certain populations and are unlikely to be of clinical importance in the eastern part of India.

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