Background And Purpose: To investigate the association between the rs11136000 single nucleotide polymorphism (SNP) of the clusterin (CLU) gene, the rs541458 and rs3851179 SNPs of the phosphatidylinositol-binding clathrin assembly protein (PICALM) gene and Alzheimer's disease (AD) in a Turkish population, and to determine whether there are any relationships between the CLU and the PICALM genotypes and behavioral and psychological symptoms of dementia (BPSD) in the Turkish population.
Methods: One-hundred and twelve AD patients and 106 controls were included in this study. BPSD were evaluated by the Behavioral Pathology in Alzheimer's Disease Rating Scale (BEHAVE-AD). SNPs in the CLU and the PICALM gene were genotyped by Real-Time PCR. Genotype distributions were assessed for the groups of patients and controls, for the patient groups with and without each BPSD, and "No BPSD" and "BPSD".
Results: The CLU and the PICALM genotypes were similar in the AD and control subjects, and the groups with and without each BPSD. There were also no significant differences between the "No BPSD" and the "BPSD" groups for the PICALM genotypes, but even without a statistical significance, it is notable that none of the "No BPSD" patients had genotype pattern CLU-rs11136000-TT, and the female subjects with genotype pattern CLU-rs11136000-TT had higher mean score of BEHAVE-AD.
Conclusion: This study claims that investigated SNPs are not genetic risk factors for AD in a Turkish population. In addition, the rs541458 and rs3851179 of PICALM SNPs are not related to development of BPSD, but the rs11136000 of CLU SNP might be related to development of BPSD in AD female Turkish subpopulation.
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