Abstract:
:Vitamin D deficiency is suggested to be associated with Parkinson's disease (PD). Our aim was to investigate the serum 25-hydroxyvitamin D3 (25OHD) levels of PD patients in Turkish cohort, to investigate any association of vitamin D binding protein (GC) genotypes with PD due to the significant role of GC in vitamin D transport, to determine whether vitamin D receptor (VDR) haplotype that we previously demonstrated to be a risk haplotype for AD is also a common haplotype for PD and to investigate any relevant consequence of serum 25OHD levels, GC or VDR genotypes on clinical features of PD. Three hundred eighty-two PD patients and 242 healthy subjects were included in this study. The serum 25OHD levels were investigated by CLIA, and GC and VDR SNPs were evaluated with LightSnip. Our results indicated a strong relationship between low serum 25OHD levels and PD (p < 0.001). rs7041 of GC and ApaI of VDR were associated with the PD risk (p < 0.05). Minor allele carriers for BsmI of VDR gene in both PD patients and healthy subjects had significantly higher levels of serum 25OHD (p < 0.05). The homozygous major allele carriers for rs2282679, rs3755967 and rs2298850 of GC gene in PD patients with slower progression had significantly higher levels of serum 25OHD (p < 0.05). Minor allele carriers for FokI of VDR gene were more frequent in patients with advanced-stage PD (p < 0.05). Consequently, this is the first study demonstrating GC gene as a risk factor for PD. The relationship between PD's clinical features and low 25OHD or risk genotypes might have effects on PD independently.
journal_name
Neuromolecular Medjournal_title
Neuromolecular medicineauthors
Gezen-Ak D,Alaylıoğlu M,Genç G,Gündüz A,Candaş E,Bilgiç B,Atasoy İL,Apaydın H,Kızıltan G,Gürvit H,Hanağası H,Ertan S,Yılmazer S,Dursun Edoi
10.1007/s12017-016-8415-9subject
Has Abstractpub_date
2017-03-01 00:00:00pages
24-40issue
1eissn
1535-1084issn
1559-1174pii
10.1007/s12017-016-8415-9journal_volume
19pub_type
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