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. 2016 Nov;30(6):1092-1099.
doi: 10.1002/jcla.21986. Epub 2016 May 17.

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

Quanbao Wang  1 , Qian Tian  1 , Xiaojie Song  1 , Yunyong Liu  1 , Wei Li  2
Affiliations

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

Quanbao Wang et al. J Clin Lab Anal. 2016 Nov.

Abstract

Background: The purpose of this study is to elucidate the association between α-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.

Keywords: SNCA; Alzheimer's disease; Polymorphism; Risk; rs10516846.

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Figures

Figure 1
Figure 1
Comparison of SNCA level in CSF between the AD group and control group. Note: AD, Alzheimer's disease; CSF, cerebral spinal fluid.
See this image and copyright information in PMC

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