title: Single-nucleotide polymorphisms and haplotypes of non-coding area in the CP gene are correlated with Parkinson's disease.
abstract: Our previous studies have demonstrated that ceruloplasmin (CP) dysmetabolism is correlated with Parkinson's disease (PD). However, the causes of decreased serum CP levels in PD patients remain to be clarified. This study aimed to explore the potential association between genetic variants of the CP gene and PD. Clinical features, serum CP levels, and the CP gene (both promoter and coding regions) were analyzed in 60 PD patients and 50 controls. A luciferase reporter system was used to investigate the function of promoter single-nucleotide polymorphisms (SNPs). High-density comparative genomic hybridization microarrays were also used to detect large-scale copy-number variations in CP and an additional 47 genes involved in PD and/or copper/iron metabolism. The frequencies of eight SNPs (one intronic SNP and seven promoter SNPs of the CP gene) and their haplotypes were significantly different between PD patients, especially those with lowered serum CP levels, and controls. However, the luciferase reporter system revealed no significant effect of the risk haplotype on promoter activity of the CP gene. Neither these SNPs nor their haplotypes were correlated with the Hoehn and Yahr staging of PD. The results of this study suggest that common genetic variants of CP are associated with PD and further investigation is needed to explore their functions in PD.
authors.affiliation: Department of Neurology, Zhongshan Hospital and Shanghai Medical College; State Key Laboratory of Medical Neurobiology; Institute of Brain Science, Fudan University, Shanghai, 200032, China.
authors.forename: Na
authors.initials: N
authors.lastname: Zhao
authors.forename: Jianqiu
authors.initials: J
authors.lastname: Xiao
authors.forename: Zhiyong
authors.initials: Z
authors.lastname: Zheng
authors.forename: Guoqiang
authors.initials: G
authors.lastname: Fei
authors.forename: Feng
authors.initials: F
authors.lastname: Zhang
authors.forename: Lirong
authors.initials: L
authors.lastname: Jin
authors.forename: Chunjiu
authors.initials: C
authors.lastname: Zhong
mesh_terms: D000368:Aged; D016022:Case-Control Studies; D002460:Cell Line; D002570:Ceruloplasmin / Q000235:genetics*; D055028:Comparative Genomic Hybridization; D005260:Female; D020022:Genetic Predisposition to Disease / Q000235:genetics*; D005838:Genotype; D006239:Haplotypes; D006801:Humans; D015810:Linkage Disequilibrium; D008297:Male; D008875:Middle Aged; D010300:Parkinson Disease / Q000235:genetics*; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*; D014162:Transfection
chemical_list: D002570:Ceruloplasmin