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Zhou Q, Peng D, Yuan X, Lv Z, Pang S, Jiang W, Yang C, Shi X, Pang G, Yang Y, Xie H, Zhang W, Hu C, Yang Z. APOE and APOC1 gene polymorphisms are associated with cognitive impairment progression in Chinese patients with late-onset Alzheimer's disease. Neural Regen Res 2014; 9:653-60. [PMID: 25206869 PMCID: PMC4146240 DOI: 10.4103/1673-5374.130117] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/13/2014] [Indexed: 01/27/2023] Open
Abstract
Current evidence shows that apolipoprotein E (APOE), apolipoprotein CI (APOC1) and low density lipoprotein receptor-related protein (LRP) variations are related to late-onset Alzheimer's disease. However, it remains unclear if genetic polymorphisms in these genes are associated with cognitive decline in late-onset Alzheimer's disease patients. We performed a 30-month longitudinal cohort study to investigate the relationship between Alzheimer's disease and APOE, APOC1, and LRP. In this study, 78 Chinese Han patients with late-onset Alzheimer's disease were recruited form Guangxi Zhuang Autonomous Region in China. APOE, APOC1, and LRP genotyping was performed using polymerase chain reaction-restriction fragment length polymorphisms. The Mini-Mental State Examination and Clinical Dementia Rating Scale were used to assess patients’ cognitive function. After a 30-month follow-up period, we found a significant reduction in Mini-Mental State Examination total score, a higher proportion of patients fulfilling cognitive impairment progression criteria, and a higher proportion of APOC1 H2 carriers in APOE ε4 carriers compared with non-carriers. In addition, the APOE ε4 allele frequency was significantly higher in the cognitive impairment progression group compared with the non-cognitive impairment progression group. In conclusion, APOE ε4 plays an important role in augmenting cognitive decline, and APOC1 H2 may act synergistically with APOE ε4 in increasing the risk of cognitive decline in Chinese patients with late-onset Alzheimer's disease.
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Affiliation(s)
- Qin Zhou
- Key Laboratory of Geriatrics, Beijing Hospital & Beijing Institute of Geriatrics, Ministry of Health, Beijing, China ; Department of Neurology, Jiangbin Hospital, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Dantao Peng
- Key Laboratory of Geriatrics, Beijing Hospital & Beijing Institute of Geriatrics, Ministry of Health, Beijing, China
| | - Xinrui Yuan
- Key Laboratory of Geriatrics, Beijing Hospital & Beijing Institute of Geriatrics, Ministry of Health, Beijing, China
| | - Zeping Lv
- Department of Neurology, Jiangbin Hospital, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Shenghang Pang
- Department of Neurology, Jiangbin Hospital, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Wenyu Jiang
- Department of Neurology, Jiangbin Hospital, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Chuyu Yang
- Department of Neurology, Jiangbin Hospital, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Xiaohong Shi
- Key Laboratory of Geriatrics, Beijing Hospital & Beijing Institute of Geriatrics, Ministry of Health, Beijing, China
| | - Guofang Pang
- Department of Neurology, Jiangbin Hospital, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Yige Yang
- Key Laboratory of Geriatrics, Beijing Hospital & Beijing Institute of Geriatrics, Ministry of Health, Beijing, China
| | - Haiqun Xie
- Department of Neurology, Jiangbin Hospital, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Wandong Zhang
- Human Health Therapeutics, National Research Council of Canada, Ottawa, Canada
| | - Caiyou Hu
- Department of Neurology, Jiangbin Hospital, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Ze Yang
- Key Laboratory of Geriatrics, Beijing Hospital & Beijing Institute of Geriatrics, Ministry of Health, Beijing, China
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