SNCA Gene Polymorphism may Contribute to an Increased Risk of Alzheimer's Disease.

ABSTRACT: BACKGROUND:The purpose of this study is to elucidate the association between ?-synuclein (SNCA) polymorphisms and the risk of Alzheimer's disease (AD). METHODS:The PCR-RFLP was applied to detect SNCA gene rs6532190, rs3775430, and rs10516846 polymorphisms in 98 AD patients and 105 healthy elderly. RESULTS:The GG frequency of rs10516846 was evidently increased in AD group than control group (P < 0.05). There was a significant difference in SNCA level between the AD and control groups (P < 0.01). In the AD group, the SNCA level in cerebrospinal fluid of GG (rs10516846) carriers was increased as compared with AA carriers (P < 0.05). The GG (rs10516846) frequency of the early-onset AD group is significantly higher than that of the late-onset AD group (P < 0.05). The frequency of rs3775430 GG was lower in the early-onset group than that in the late-onset group (0% vs. 16.7%). The SNCA level in cerebrospinal fluid of GG (rs10516846) carriers in the early-onset AD group is higher than that of AA carriers (P < 0.05). CONCLUSION:SNCA gene polymorphism may be associated with an increased risk of AD and GG genotype of rs10516846 and elevated SNCA level in CSF may increase the risk of early-onset AD.

SUBMITTER: Wang Q 

PROVIDER: S-EPMC6807080 | biostudies-literature | 2016 Nov

REPOSITORIES: biostudies-literature