Abstract
To determine if polymorphisms (-765G/C, -1195G/A and 8473T/C) of the cyclooxygenase-2 (COX-2) gene can be associated with Alzheimer disease (AD). The frequency of the polymorphisms was determined in 244 cases and 226 controls. The results revealed that the distributions of COX-2 -765G/C and 8473T/C polymorphisms were statistically not significant between AD cases and controls. The genotype distributions and allele frequencies of COX-2 -1195G/A polymorphism in the cases were statistically significantly different from the controls (P < 0.05). The A/A distribution and A allele frequency were significantly lower in the AD group. COX-2 -1195AA carriers showed a one-third lower risk of developing AD as compared to those with -1195GG and GA genotypes (OR = 0.3, 95 % CI 0.194-0.465, P = 0.000). This study suggested that -1195G/A polymorphism of the COX-2 gene is associated with the risk of AD, and the A allele represents a protective factor in patients with AD.
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