Abstract:
:Genetic polymorphisms in chemokine receptor and their natural ligand genes have been shown to modify the disease progression of Alzheimer's disease (AD). Human macrophage inflammatory protein-1 alpha (MIP-1alpha) is a chemotactic cytokine which plays a considerable role in AD pathogenesis, but its genetic contribution to AD has never been investigated. Recently, a biallelic dinucleotide microsatellite repeat (TA repeat) polymorphism has been found in the MIP-1alpha gene promoter region at position -906. We investigated whether this promoter polymorphism of MIP-1alpha gene might be responsible for susceptibility to AD in a Chinese population, utilizing a clinically well-defined group of 138 sporadic AD patients and 180 age-matched controls. We also examined the combined gene effects between the MIP-1alpha and apolipoprotein E (APOE) genes. The overall distribution of MIP-1alpha-906 alleles and genotypes was significantly different between AD cases and controls (P<0.05). The odds ratio for AD associated with the (TA)(6)/(TA)(6) versus non-(TA)(6)/(TA)(6) genotype was 1.893 (95% CI=1.208-2.967), while that for APOE varepsilon4 and MIP-1alpha (TA)(6)/(TA)(6) carriers was 7.140 (95% CI=3.222-15.823). In addition, we found that serum MIP-1alpha levels in patients with (TA)(6)/(TA)(6) genotype were increased significantly when compared with non-(TA)(6)/(TA)(6) genotype. The results indicate that the MIP-1alpha-906 (TA)(6)/(TA)(6) genotype, either by itself or interacting with the APOE varepsilon4 gene seems to be a genetic risk factor for AD. This genotype is associated with elevated serum MIP-1alpha levels in patients, which can contribute to increase the inflammatory process occurring in AD.
journal_name
Neurosci Lettjournal_title
Neuroscience lettersauthors
Li K,Dai D,Yao L,Gu X,Luan K,Tian W,Zhao Y,Wang Bdoi
10.1016/j.neulet.2008.01.002subject
Has Abstractpub_date
2008-03-12 00:00:00pages
125-8issue
2eissn
0304-3940issn
1872-7972pii
S0304-3940(08)00028-1journal_volume
433pub_type
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