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  • Title: Association of CLU gene polymorphism with Parkinson's disease in the Chinese Han population.
    Author: Lin Y, Lu L, Zhou M, Liu H, Ye P, Zhang W, Qiu J, Zhang Z, Yang X, Ding L, Guo W, Mo M, Zhu X, Zhang X, Chen X, Xu P.
    Journal: J Gene Med; 2021 Feb; 23(2):e3302. PubMed ID: 33295114.
    Abstract:
    BACKGROUND: Clusterin (CLU) plays important role in the pathology of neurodegenerative disorders. Recently, a genetic variant of CLU rs9331896 has been reported as a risk estimate for Alzheimer's disease (AD). However, the association between this variant and the risk of Parkinson's disease (PD) in the Chinese Han population remains elusive. METHODS: We sequenced CLU rs9331896 in 353 PD patients and 326 healthy-matched individuals of the Chinese Han population. The genotypes of rs9331896 were analyzed using MassArray (Agena Bioscience, San Diego, CA, USA) in accordance with the manufacturer's instructions. The distribution of genotypes and allelic frequencies was analyzed by a chi-squared test. Additionally, the expression of CLU protein in plasma was evaluated by an enzyme-linked immunosorbent assay and analysed with a t-test. RESULTS: The TT genotype in rs9331896 in a recessive model was found to be associated with the increased risk of PD (odds ratio = 1.408, 95% confidence interval = 1.034-1.916, p = 0.029). Subgroup analysis indicated that TT genotype carriers showed a significantly higher risk in male PD patients compared to male healthy controls (odds ratio = 1.611, 95% confidence interval = 1.046-2.483, p = 0.030). In addition, CLU levels in the plasma of PD patients were significantly higher than controls (p = 0.024). CONCLUSIONS: The CLU-rs9331896-TT genotype was a risk factor for PD, particularly in males. PD patients also expressed a high level of CLU in plasma.
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