Effect of Single-Nucleotide Polymorphisms on Decline of Dopamine Transporter Availability in Parkinson's Disease
Journal of Clinical Neurology
;
: 102-107, 2019.
Article
in English
| WPRIM
| ID: wpr-719388
ABSTRACT
BACKGROUND AND PURPOSE:
We aimed to determine the association between the annual changes in dopamine transporter (DAT) availability as measured by 123I-ioflupane (123I-FP-CIT) single-photon-emission computed tomography and single-nucleotide polymorphisms (SNPs) known to be risk factors in Parkinson's disease (PD).METHODS:
In total, 150 PD patients were included from the Parkinson's Progression Markers Initiative database. Specific SNPs that are associated with PD were selected for genotyping. SNPs that were not in Hardy-Weinberg equilibrium or whose minor allele frequency was less than 0.05 were excluded. Twenty-three SNPs met the inclusion criteria for this study. The Kruskal-Wallis test was used to compare annual percentage changes in DAT availability for three subgroups of SNP.RESULTS:
None of the 23 SNPs exerted a statistically significant effect (p < 0.0022) on the decline of DAT availability in PD patients. However, we observed trends of association (p < 0.05) between three SNPs of two genes with the annual percentage change in DATavailability:
1) rs199347 on the putamen (p=0.0138), 2) rs356181 on the caudate nucleus (p=0.0105), and 3) rs3910105 on the caudate nucleus (p=0.0374). A post-hoc analysis revealed that DAT availability was reduced the most for 1) the putamen in the CC genotype of rs199347 (vs. CT, p=0.0199; vs. TT, p=0.0164), 2) the caudate nucleus in the TT genotype of rs356181 (vs. CC, p=0.0081), and 3) the caudate nucleus in the CC genotype of rs3910105 (vs. TT, p=0.0317).CONCLUSIONS:
Significant trends in the associations between three SNPs and decline of DAT availability in PD patients have been discovered.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Parkinson Disease
/
Putamen
/
Dopamine
/
Caudate Nucleus
/
Tomography, Emission-Computed, Single-Photon
/
Risk Factors
/
Polymorphism, Single Nucleotide
/
Dopamine Plasma Membrane Transport Proteins
/
Gene Frequency
/
Genotype
Type of study:
Etiology study
/
Risk factors
Limits:
Humans
Language:
English
Journal:
Journal of Clinical Neurology
Year:
2019
Type:
Article
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