TY - JOUR
T1 - Beta-synuclein gene variants and Parkinson's disease
T2 - A preliminary case-control study
AU - Brighina, Laura
AU - Okubadejo, Njide U.
AU - Schneider, Nicole K.
AU - Lesnick, Timothy G.
AU - de Andrade, Mariza
AU - Cunningham, Julie M.
AU - Farrer, Matthew J.
AU - Lincoln, Sarah J.
AU - Rocca, Walter A.
AU - Maraganore, Demetrius M.
N1 - Funding Information:
The authors acknowledge funding support from the NIH grant R01 ES10751, R01 NS33978, and P50 NS40256.
PY - 2007/6/15
Y1 - 2007/6/15
N2 - Aggregation and fibrillization of the alpha-synuclein protein, which is the main component of Lewy bodies, may represent important processes in the pathogenesis of Parkinson's disease (PD). Several in vivo and in vitro studies suggest that beta-synuclein may be a natural negative regulator of alpha-synuclein aggregation and fibrillization. The goal of the present study was to investigate the association of two polymorphisms (rs35035889 and rs1352303) in the beta-synuclein (SNCB) gene with PD. Our case-control study included a total of 370 case-unaffected sibling pairs and 168 case-unrelated control pairs (538 pairs total). The subjects were recruited from an ongoing study of the molecular epidemiology of PD in the Upper Midwest (USA). We employed a liberalization of the sibling transmission disequilibrium test to study the main effects of the gene variants for subjects overall and for strata defined by age at study, gender, ethnicity, clinical diagnostic certainty, dementia, and family history of PD (adjusted for age at study and gender as appropriate). The analyses were conducted for each SNCB variant separately, and also for two-locus haplotypes using score tests. Neither of the SNCB SNPs examined were associated with PD overall or in strata, and haplotype analyses were negative as well. However, one of the two SNPs (rs1352303) was associated with a delayed age at onset of PD in women. The results of this preliminary study suggest that the SNCB locus, though not a susceptibility gene for PD, might modify the age at onset of PD.
AB - Aggregation and fibrillization of the alpha-synuclein protein, which is the main component of Lewy bodies, may represent important processes in the pathogenesis of Parkinson's disease (PD). Several in vivo and in vitro studies suggest that beta-synuclein may be a natural negative regulator of alpha-synuclein aggregation and fibrillization. The goal of the present study was to investigate the association of two polymorphisms (rs35035889 and rs1352303) in the beta-synuclein (SNCB) gene with PD. Our case-control study included a total of 370 case-unaffected sibling pairs and 168 case-unrelated control pairs (538 pairs total). The subjects were recruited from an ongoing study of the molecular epidemiology of PD in the Upper Midwest (USA). We employed a liberalization of the sibling transmission disequilibrium test to study the main effects of the gene variants for subjects overall and for strata defined by age at study, gender, ethnicity, clinical diagnostic certainty, dementia, and family history of PD (adjusted for age at study and gender as appropriate). The analyses were conducted for each SNCB variant separately, and also for two-locus haplotypes using score tests. Neither of the SNCB SNPs examined were associated with PD overall or in strata, and haplotype analyses were negative as well. However, one of the two SNPs (rs1352303) was associated with a delayed age at onset of PD in women. The results of this preliminary study suggest that the SNCB locus, though not a susceptibility gene for PD, might modify the age at onset of PD.
KW - Beta-synuclein gene
KW - Case-control study
KW - Parkinson's disease
KW - Polymorphism
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U2 - 10.1016/j.neulet.2007.05.021
DO - 10.1016/j.neulet.2007.05.021
M3 - Article
C2 - 17556099
AN - SCOPUS:34249793210
SN - 0304-3940
VL - 420
SP - 229
EP - 234
JO - Neuroscience Letters
JF - Neuroscience Letters
IS - 3
ER -