期刊
JOURNAL OF NEUROINFLAMMATION
卷 9, 期 -, 页码 -出版社
BMC
DOI: 10.1186/1742-2094-9-21
关键词
IL-6; SNP; Haplotype; Alzheimer?'?s disease; Inflammation
资金
- NSC [96-2314-B-002-197, 97-2314-B-002-168-MY3]
Background: Interleukin 6 (IL-6) has been related to beta-amyloid aggregation and the appearance of hyperphosphorylated tau in Alzheimer's disease (AD) brain. However, previous studies relating IL-6 genetic polymorphisms to AD included few and unrepresentative single nucleotide polymorphisms (SNPs) and the results were inconsistent. Methods: This is a case-control study. A total of 266 patients with AD, aged >= 65, were recruited from three hospitals in Taiwan (20072010). Controls (n = 444) were recruited from routine health checkups and volunteers of the hospital during the same period of time. Three common IL-6 haplotype-tagging SNPs were selected to assess the association between IL-6 polymorphisms and the risk of late-onset AD (LOAD). Results: Variant carriers of IL6 rs1800796 and rs1524107 were significantly associated with a reduced risk of LOAD [(GG + GC vs. CC): adjusted odds ratio (AOR) = 0.64 and (CC + CT vs. TT): AOR = 0.60, respectively]. Haplotype CAT was associated with a decreased risk of LOAD (0 and 1 copy vs. 2 copies: AOR = 0.65, 95% CI = 0.440.95). These associations remained significant in ApoE e4 noncarriers only. Hypertension significantly modified the association between rs2069837 polymorphisms and the risk of LOAD (p(interaction) = 0.03). Conclusions: IL6 polymorphisms are associated with reduced risk of LOAD, especially in ApoE e4 noncarriers. This study identified genetic markers for predicting LOAD in ApoE e4 noncarriers.
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