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Wang S, Xue Y, Zhang J, Meng H, Zhang J, Li X, Zhang Z, Li H, Pan B, Lu X, Zhang Q, Niu Q. Interaction between aluminum exposure and ApoEε4 gene on cognitive function of in-service workers. CHEMOSPHERE 2023; 323:138282. [PMID: 36868418 DOI: 10.1016/j.chemosphere.2023.138282] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 01/28/2023] [Accepted: 02/28/2023] [Indexed: 06/18/2023]
Abstract
The occurrence and development of cognitive impairment, the early stage of AD, may be affected both by factors of environmental (aluminum exposure) and genetic (ApoEε4 gene). But whether there is an interaction between the two factors on cognitive function is still unknown. To explore the interaction between the two factors on cognitive function of in-service workers. A total of 1121 in-service workers in a large aluminum factory were investigated in Shanxi Province. Cognitive function was assessed by the Mini-mental State Examination (MMSE), the clock-drawing test (CDT), the Digit Span Test (DST, including DSFT and DSBT), the fuld object memory evaluation (FOM), and the verbal fluency task (VFT). The plasma-Al (p-Al) concentrations were measured by inductively coupled plasma-mass spectrometry (ICP-MS) as an internal exposure indicator, and the participants were divided into four Al exposure groups according to the quartile of p-Al concentrations, namely Q1, Q2, Q3, and Q4. ApoE genotype was determined by Ligase Detection Reaction (LDR). The multiplicative model was fitted using non-conditional logistic regression and additive model was fitted using crossover analysis to analyze the interaction between p-Al concentrations and the ApoEε4 gene. Finally, a dose-response relationship between p-Al concentrations and cognitive impairment was observed, with the p-Al concentrations increased, cognitive function performance gradually becomes worse (Ptrend<0.05), and the risk of cognitive impairment gradually increases (Ptrend<0.05), mainly in executive/visuospatial impairment, auditory memory impairment (particularly the working memory impairment). And ApoEε4 gene may be a risk factor for cognitive impairment, while no association between the ApoEε2 gene and cognitive impairment is observed. Additionally, an additive but no multiplicative interaction between p-Al concentrations and ApoEε4 gene is observed, and when the two factors work together, the risk of cognitive impairment further increased, of which 44.2% can be attributed to the interaction effect.
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Affiliation(s)
- Shanshan Wang
- Section of Occupational Medicine, Department of Special Medicine, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Yingjun Xue
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Jintao Zhang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Huaxing Meng
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China; Department of Neurology, First Hospital, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Jingsi Zhang
- Section of Occupational Medicine, Department of Special Medicine, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Xiaoyan Li
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Zhuoran Zhang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Huan Li
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China; Department of Occupational Health, School of Public Health, Jining Medical University, Jining, Shandong, 272000, China
| | - Baolong Pan
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China; Sixth Hospital of Shanxi Medical University (General Hospital of Tisco), Taiyuan, Shanxi, 030001, China
| | - Xiaoting Lu
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China; Key Lab of Environmental Hazards and Health Damage of Shanxi Province, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Qinli Zhang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China; Key Lab of Environmental Hazards and Health Damage of Shanxi Province, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Qiao Niu
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, 030001, China; Key Lab of Environmental Hazards and Health Damage of Shanxi Province, Shanxi Medical University, Taiyuan, Shanxi, 030001, China.
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Lawrence KA, Rippey CS, Welikson B, Pietrzak RH, Adams TG. Interactive association of posttraumatic stress disorder, apolipoprotein ε4 genotype, and age on cognitive functioning. Int J Geriatr Psychiatry 2023; 38:e5888. [PMID: 36757293 PMCID: PMC10168127 DOI: 10.1002/gps.5888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Accepted: 01/26/2023] [Indexed: 02/04/2023]
Abstract
BACKGROUND The ε4 allele of the apolipoprotein (APOE) gene and posttraumatic stress disorder (PTSD) are associated with cognitive deficits. Both associations may vary depending on age. No previous study has examined a possible three-way interaction between APOE ε4, PTSD, and age on cognitive functioning. METHODS Data were analyzed from 1244 European-American U.S. military veterans who participated in the 2011 National Health and Resilience in Veterans Study (NHRVS). Analyses of covariance were used to examine the main effects and interactions of APOE ε4, PTSD, and age on learning/working memory (LWM) and attention/psychomotor (APM) performance. RESULTS A significant three-way interaction between APOE ε4, PTSD, and age on the LWM composite (ηp 2 = 0.011) was observed such that the main effect of APOE ε4 on LWM was only significant for older participants with PTSD. A significant two-way interaction between PTSD and age on the APM composite (ηp 2 = 0.011) was observed such that the main effect of PTSD on APM was only significant in older participants. CONCLUSION Older APOE ε4 carriers with probable PTSD showed poorer LWM performance relative to other groups. Aging-related associations on APM performance were most pronounced in veterans with PTSD. These data are preliminary evidence that identification and treatment of PTSD may be beneficial for individuals at risk for age-related cognitive impairment.
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Affiliation(s)
| | | | - Bianca Welikson
- University of Louisville, Department of Psychological and Brain Sciences
| | - Robert H. Pietrzak
- Yale School of Medicine, Department of Psychiatry
- Clinical Neurosciences Division, U.S. Department of Veterans Affairs National Center for Posttraumatic Stress Disorder, VA Connecticut Healthcare System
- Yale School of Public Health, Department of Social and Behavioral Sciences
| | - Thomas G. Adams
- University of Kentucky, Department of Psychology
- Yale School of Medicine, Department of Psychiatry
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Cong L, Ren Y, Wang Y, Hou T, Dong Y, Han X, Yin L, Zhang Q, Feng J, Wang L, Tang S, Grande G, Laukka EJ, Du Y, Qiu C. Mild cognitive impairment among rural-dwelling older adults in China: A community-based study. Alzheimers Dement 2023; 19:56-66. [PMID: 35262288 PMCID: PMC10078715 DOI: 10.1002/alz.12629] [Citation(s) in RCA: 28] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 01/24/2022] [Accepted: 01/26/2022] [Indexed: 01/18/2023]
Abstract
BACKGROUND Epidemiological studies of mild cognitive impairment (MCI) and subtypes of MCI have rarely focused on rural residents in China. METHODS This population-based study included 5068 participants (age ≥60 years) who were living in rural communities. We defined MCI, amnestic MCI (aMCI), and non-amnestic MCI (naMCI) following the Petersen's criteria that integrated neuropsychological assessments with in-person clinical evaluations. RESULTS The overall prevalence of MCI, aMCI, and naMCI was 26.48%, 22.30%, and 4.18%, respectively. The prevalence of MCI increased with age. The adjusted odds ratio (OR) of MCI was 0.71 (95% confidence interval [CI] 0.61 to 0.82) for primary school (vs. illiteracy), 0.30 (0.24 to 0.39) for middle school or above, 1.35 (1.09 to 1.67) for being farmers, 0.65 (0.54 to 0.78) for alcohol consumption, 1.43 (1.20 to 1.70) for stroke history, and 1.14 (0.95 to 1.36) for any apolipoprotein E (APOE) ε4 allele (vs ε3/ε3). CONCLUSIONS MCI affects over one-fourth of rural older adults in China. Overall MCI was associated with demographic factors, non-alcohol consumption, and stroke, but not with APOE genotype and cardiometabolic factors.
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Affiliation(s)
- Lin Cong
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, P. R. China.,Department of Neurology, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, Shandong, P. R. China.,Shandong Provincial Clinical Research Center for Neurological Diseases, Jinan, Shandong, P. R. China
| | - Yifei Ren
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, P. R. China
| | - Yongxiang Wang
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, P. R. China.,Department of Neurology, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, Shandong, P. R. China.,Shandong Provincial Clinical Research Center for Neurological Diseases, Jinan, Shandong, P. R. China
| | - Tingting Hou
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, P. R. China.,Department of Neurology, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, Shandong, P. R. China.,Shandong Provincial Clinical Research Center for Neurological Diseases, Jinan, Shandong, P. R. China
| | - Yi Dong
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, P. R. China.,Department of Neurology, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, Shandong, P. R. China.,Shandong Provincial Clinical Research Center for Neurological Diseases, Jinan, Shandong, P. R. China
| | - Xiaojuan Han
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, P. R. China.,Department of Neurology, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, Shandong, P. R. China.,Shandong Provincial Clinical Research Center for Neurological Diseases, Jinan, Shandong, P. R. China
| | - Ling Yin
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, P. R. China.,Department of Neurology, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, Shandong, P. R. China.,Shandong Provincial Clinical Research Center for Neurological Diseases, Jinan, Shandong, P. R. China
| | - Qinghua Zhang
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, P. R. China.,Department of Neurology, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, Shandong, P. R. China.,Shandong Provincial Clinical Research Center for Neurological Diseases, Jinan, Shandong, P. R. China
| | - Jianli Feng
- Department of Neurology, Shandong Second Provincial General Hospital, Jinan, Shandong, P. R. China
| | - Lidan Wang
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, P. R. China
| | - Shi Tang
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, P. R. China.,Department of Neurology, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, Shandong, P. R. China.,Shandong Provincial Clinical Research Center for Neurological Diseases, Jinan, Shandong, P. R. China
| | - Giulia Grande
- Aging Research Center and Center for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet-Stockholm University, Stockholm, Sweden
| | - Erika J Laukka
- Aging Research Center and Center for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet-Stockholm University, Stockholm, Sweden
| | - Yifeng Du
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, P. R. China.,Department of Neurology, Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan, Shandong, P. R. China.,Shandong Provincial Clinical Research Center for Neurological Diseases, Jinan, Shandong, P. R. China
| | - Chengxuan Qiu
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, P. R. China.,Aging Research Center and Center for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet-Stockholm University, Stockholm, Sweden
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Mu T, Wei J, Sun J, Jin J, Zhang T, Wu H, Su B. Association of apolipoprotein E epsilon 4 and cognitive impairment in adults living with human immunodeficiency virus: a meta-analysis. Chin Med J (Engl) 2022; 135:2677-2686. [PMID: 36719356 PMCID: PMC9945176 DOI: 10.1097/cm9.0000000000002480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND It is controversial whether the apolipoprotein E epsilon 4 allele (APOE ε4) is a risk gene for human immunodeficiency virus (HIV)-related neurocognitive impairment. This meta-analysis aimed to summarize evidence of the associations between APOE ε4 and cognitive impairment in people living with HIV (PLWH). METHODS Our study conducted a systematic literature search of PubMed, Web of Science, Embase, Google Scholar, and ProQuest for studies published before April 11, 2022 that evaluated associations between APOE ε4 and cognitive impairment in adult PLWH (aged ≥18 years). We calculated pooled odds ratios (ORs) of global cognitive impairment and 95% confidence intervals (CIs) and standardized mean differences (SMDs) for specific cognitive domains between APOE ε4 carriers and non-carriers. Subgroup meta-analyses were used to evaluate the result profiles across different categorical variables. RESULTS Twenty studies met the inclusion criteria, including 19 that evaluated global cognitive impairment. APOE ε4 was significantly associated with global cognitive impairment in PLWH (OR = 1.36, 95% CI = [1.05, 1.78], number of estimates [k] = 19, P = 0.02, random effects). Subgroup meta-analysis based percentage of females showed evident intergroup differences in global cognitive performance between ε4 carriers and non-carriers (P = 0.015). APOE ε4 carriers had lower cognitive test scores than non-carriers in all seven cognitive domains, including fluency (SMD = -0.51, 95% CI = [-0.76, -0.25], P < 0.001, k = 4, I2 = 0%), learning (SMD = -0.52, 95% CI = [-0.75, -0.28], P < 0.001, k = 5, I2 = 0%), executive function (SMD = -0.41, 95% CI = [-0.59, -0.23], P < 0.001, k = 8, I2 = 0%), memory (SMD = -0.41, 95% CI = [-0.61, -0.20], P < 0.001, k = 10, I2 = 36%), attention/working memory (SMD = -0.34, 95% CI = [-0.54, -0.14], P = 0.001, k = 6, I2 = 0%), speed of information processing (SMD = -0.34, 95% CI = [-0.53, -0.16], P < 0.001, k = 8, I2 = 0%), and motor function (SMD = -0.19, 95% CI = [-0.38, -0.01], P = 0.04, k = 7, I2 = 0%). CONCLUSIONS Our meta-analysis provides significant evidence that APOE ε4 is a risk genotype for HIV-associated cognitive impairment, especially in cognitive domains of fluency, learning, executive function, and memory. Moreover, the impairment is sex specific. META ANALYSIS REGISTRATION PROSPERO, CRD 42021257775.
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Affiliation(s)
- Tingting Mu
- Beijing Key Laboratory for HIV/AIDS Research, Clinical and Research Center for Infectious Diseases, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China
| | - Jiaqi Wei
- Beijing Key Laboratory for HIV/AIDS Research, Clinical and Research Center for Infectious Diseases, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China
| | - Jun Sun
- Department of Radiology, Beijing Tiantan Hospital, Capital Medical University, Beijing 100070, China
| | - Junyan Jin
- Beijing Key Laboratory for HIV/AIDS Research, Clinical and Research Center for Infectious Diseases, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China
| | - Tong Zhang
- Beijing Key Laboratory for HIV/AIDS Research, Clinical and Research Center for Infectious Diseases, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China
| | - Hao Wu
- Beijing Key Laboratory for HIV/AIDS Research, Clinical and Research Center for Infectious Diseases, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China
| | - Bin Su
- Beijing Key Laboratory for HIV/AIDS Research, Clinical and Research Center for Infectious Diseases, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China
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Positive Effect of Cognitive Training in Older Adults with Different APOE Genotypes and COVID-19 History: A 1-Year Follow-Up Cohort Study. Diagnostics (Basel) 2022; 12:diagnostics12102312. [PMID: 36292001 PMCID: PMC9600912 DOI: 10.3390/diagnostics12102312] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 09/13/2022] [Accepted: 09/22/2022] [Indexed: 11/16/2022] Open
Abstract
(1) Background: Older people suffer from cognitive decline; several risk factors contribute to greater cognitive decline. We used acquired (COVID-19 infection) and non-modifiable (presence of APOE rs429358 and rs7412 polymorphisms) factors to study the progression of subjective cognitive impairment while observing patients for one year. Cognitive training was used as a protective factor. (2) Methods: Two groups of subjects over the age of 65 participated in the study: group with subjective cognitive decline receiving cognitive training and individuals who did not complain of cognitive decline without receiving cognitive training (comparison group). On the first visit, the concentration of antibodies to COVID-19 and APOE genotype was measured. At the first and last point (1 year later) the Mini-Mental State Examination scale and the Hospital Anxiety and Depression Scale were performed. (3) Results: COVID-19 infection did not affect cognitive function. A significant role of cognitive training in improving cognitive functions was revealed. Older adults with APOE-ε4 genotype showed no positive effect of cognitive training. (4) Conclusions: Future research should focus on cognitive dysfunction after COVID-19 in long-term follow-up. Attention to the factors discussed in our article, but not limited to them, are useful for a personalized approach to maintaining the cognitive health of older adults.
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Zhang M, Zhu Y, Zhu Z. Research advances in the influence of lipid metabolism on cognitive impairment. IBRAIN 2022; 10:83-92. [PMID: 38682015 PMCID: PMC11045198 DOI: 10.1002/ibra.12018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 12/28/2021] [Accepted: 12/29/2021] [Indexed: 05/01/2024]
Abstract
Cognitive impairment (CI) is a mental disorder related to cognition and understanding, which is mainly categorized into mild CI and senile dementia. This disease is associated with multiple factors, such as chronic brain injury, aging, chronic systemic disease, mental state, and psychological factors. However, the pathological mechanism of CI remains unclear; it is usually associated with such underlying diseases as diabetes and hyperlipidemia. It has been demonstrated that abundant lipid metabolism indexes in the human body are closely related to CI, including total cholesterol, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, triglycerides, apolipoprotein, and so forth. As a crucial risk factor for CI, hyperlipidemia is of great significance in the occurrence and development of CI. However, the specific correlation between dyslipidemia and CI is still not fully elucidated. Besides, the efficacy of lipid-lowering drugs in the prophylaxis and treatment of CI has not been clarified. In this study, relevant advances in the influence of lipid metabolism disorders in CI will be reviewed, in an attempt to explore the effect of mediating blood lipid levels on the prophylaxis and treatment of CI, thus providing a reference for its clinical management.
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Affiliation(s)
- Min Zhang
- Department of AnesthesiologyAffiliated Hospital of Zunyi Medical UniversityZunyiGuizhouChina
- Suining Central HospitalSuiningSichuanChina
| | - Yu‐Hang Zhu
- Department of AnesthesiologyAffiliated Hospital of Zunyi Medical UniversityZunyiGuizhouChina
| | - Zhao‐Qiong Zhu
- Department of AnesthesiologyAffiliated Hospital of Zunyi Medical UniversityZunyiGuizhouChina
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7
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Cheng Y, Li Y, Liang X, Wang P, Fa W, Liu C, Wang Y, Liu K, Wang N, Du Y. Genetic Effects of NDUFAF6 rs6982393 and APOE on Alzheimer’s Disease in Chinese Rural Elderly: A Cross-Sectional Population-Based Study. Clin Interv Aging 2022; 17:185-194. [PMID: 35237031 PMCID: PMC8884707 DOI: 10.2147/cia.s345784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 01/31/2022] [Indexed: 11/23/2022] Open
Abstract
Purpose To investigate the associations of genotypes of NDUFAF6 rs6982393 and APOE and their combined genotypes with the risk of Alzheimer’s disease (AD) and mild cognitive impairment (MCI) in Chinese rural elderly. Methods This cross-sectional population-based study included 5096 older adults (age ≥60 years, 57.1% female). Genotypes of NDUFAF6 rs6982393 and APOE were detected using the multiple-polymerase chain reaction amplification. We diagnosed AD following the criteria of Diagnostic and Statistical Manual of Mental Disorders, the fourth edition and diagnosed MCI following the Petersen’s criteria MCI. Data were analyzed using the logistic regression model. Results The overall prevalence of AD and MCI was 3.57% (95% confidence interval [CI]: 0.040, 0.053) and 22.65% (95% CI: 0.223, 0.247), separately. The TT versus CC/CT genotype of NDUFAF6 rs6982393 was related to a higher risk of AD with the multi-adjusted odds ratio (95% CI) being 1.61 (1.02, 2.54) in the total sample, 3.36 (1.48, 7.60) in those aged 60–69, and 1.24 (0.71, 2.17) in those aged 70 years and above. The interaction between genotype of NDUFAF6 rs6982393 with age groups (60–69 versus ≥70 years) was significant on the risk of AD. The presence of APOE ε4 was not significantly associated with the risk of AD. Carrying both NDUFAF6 TT and APOE ε4 was related to a higher risk of AD with the multi-adjusted odds ratio (95% CI) being 2.69 (1.10, 2.56). In addition, there was no significant association between the above genotypes and MCI. Conclusion In Chinese rural elderly, the TT versus CT/CC genotype of NDUFAF6 rs6982393 was associated with an increased likelihood of AD; such an association only existed among young-old adults. Carrying both NDUFAF6 rs6982393-TT and APOE ε4 was related to a higher risk of AD. This finding highlights the importance of considering age and combined genotype in studying the genetic profiles of AD.
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Affiliation(s)
- Yingzhe Cheng
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, People’s Republic of China
| | - Yuanjing Li
- Aging Research Center and Center for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet-Stockholm University, Stockholm, Sweden
| | - Xiaoyan Liang
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, People’s Republic of China
- Shandong Provincial Clinical Research Center for Neurological Diseases, Jinan, Shandong, People’s Republic of China
| | - Pin Wang
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, People’s Republic of China
| | - Wenxin Fa
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, People’s Republic of China
| | - Cuicui Liu
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, People’s Republic of China
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, People’s Republic of China
- Shandong Provincial Clinical Research Center for Neurological Diseases, Jinan, Shandong, People’s Republic of China
| | - Yongxiang Wang
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, People’s Republic of China
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, People’s Republic of China
- Shandong Provincial Clinical Research Center for Neurological Diseases, Jinan, Shandong, People’s Republic of China
| | - Keke Liu
- Shandong Academy of Clinical Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, People’s Republic of China
| | - Nan Wang
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, People’s Republic of China
- Shandong Provincial Clinical Research Center for Neurological Diseases, Jinan, Shandong, People’s Republic of China
| | - Yifeng Du
- Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, People’s Republic of China
- Department of Neurology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, People’s Republic of China
- Shandong Provincial Clinical Research Center for Neurological Diseases, Jinan, Shandong, People’s Republic of China
- Correspondence: Yifeng Du, Department of Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, No. 324 Jingwuweiqi Road, Jinan, Shandong, 250021, People’s Republic of China, Tel/Fax +86-531-68776354, Email
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8
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Luo Y, Tan L, Therriault J, Zhang H, Gao Y. The Role of Apolipoprotein E ε4 in Early and Late Mild Cognitive Impairment. Eur Neurol 2021; 84:472-480. [PMID: 34340229 DOI: 10.1159/000516774] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 04/17/2021] [Indexed: 11/19/2022]
Abstract
BACKGROUND Apolipoprotein E (APOE) ε4 is highly associated with mild cognitive impairment (MCI). However, the specific influence of APOE ε4 status on tau pathology and cognitive decline in early MCI (EMCI) and late MCI (LMCI) is poorly understood. Our goal was to evaluate the association of APOE ε4 with cerebrospinal fluid (CSF) tau levels and cognition in EMCI and LMCI patients in the Alzheimer's Disease Neuroimaging Initiative database, and whether this association was mediated by amyloid-β (Aβ). METHODS Participants were 269 cognitively normal (CN), 262 EMCI, and 344 LMCI patients. They underwent CSF Aβ42 and tau detection, APOE ε4 genotyping, Mini-Mental State Examination, (MMSE), and Alzheimer's disease assessment scale (ADAS)-cog assessments. Linear regressions were used to examine the relation of APOE ε4 and CSF tau levels and cognitive scores in persons with and without Aβ deposition (Aβ+ and Aβ-). RESULTS The prevalence of APOE ε4 is higher in EMCI and LMCI than in CN (p < 0.001 for both), and in LMCI than in EMCI (p = 0.001). APOE ε4 allele was significantly higher in Aβ+ subjects than in Aβ- subjects (p < 0.001). Subjects who had a lower CSF Aβ42 level and were APOE ε4-positive experienced higher levels of CSF tau and cognitive scores in EMCI and/or LMCI. CONCLUSIONS An APOE ε4 allele is associated with increased CSF tau and worse cognition in both EMCI and LMCI, and this association may be mediated by Aβ. We conclude that APOE ε4 may be an important mediator of tau pathology and cognition in the early stages of AD.
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Affiliation(s)
- Yulin Luo
- Chongqing Three Gorges Medical College, Chongqing, China
| | - Li Tan
- General Medical Wards, The Affiliated Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Joseph Therriault
- The McGill University Research Centre for Studies in Aging, McGill University, Montreal, Québec, Canada
| | - Hua Zhang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Ying Gao
- General Medical Wards, The Affiliated Children's Hospital of Chongqing Medical University, Chongqing, China
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9
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Granot‐Hershkovitz E, Tarraf W, Kurniansyah N, Daviglus M, Isasi CR, Kaplan R, Lamar M, Perreira KM, Wassertheil‐Smoller S, Stickel A, Thyagarajan B, Zeng D, Fornage M, DeCarli CS, González HM, Sofer T. APOE alleles' association with cognitive function differs across Hispanic/Latino groups and genetic ancestry in the study of Latinos-investigation of neurocognitive aging (HCHS/SOL). Alzheimers Dement 2021; 17:466-474. [PMID: 33155766 PMCID: PMC8016734 DOI: 10.1002/alz.12205] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
INTRODUCTION Apolipoprotein E (APOE) alleles are associated with cognitive decline, mild cognitive impairment (MCI), and Alzheimer's disease in Whites, but have weaker and inconsistent effects reported in Latinos. We hypothesized that this heterogeneity is due to ancestry-specific genetic effects. METHODS We investigated the associations of the APOE alleles with significant cognitive decline and MCI in 4183 Latinos, stratified by six Latino backgrounds, and explored whether the proportion of continental genetic ancestry (European, African, and Amerindian) modifies these associations. RESULTS APOE ε4 was associated with an increased risk of significant cognitive decline (odds ratio [OR] = 1.15, P-value = 0.03), with the strongest association in Cubans (OR = 1.46, P-value = 0.007). APOE-ε2 was associated with decreased risk of MCI (OR = 0.37, P-value = 0.04) in Puerto Ricans. Amerindian genetic ancestry was found to protect from the risk conferred by APOE ε4 on significant cognitive decline. DISCUSSION Results suggest that APOE alleles' effects on cognitive outcomes differ across six Latino backgrounds and are modified by continental genetic ancestry.
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Affiliation(s)
- Einat Granot‐Hershkovitz
- Division of Sleep and Circadian DisordersDepartment of Medicine, Brigham and Women's HospitalBostonMassachusettsUSA
- Department of MedicineHarvard Medical SchoolBostonMassachusettsUSA
| | - Wassim Tarraf
- Institute of GerontologyWayne State UniversityDetroitMichiganUSA
| | - Nuzulul Kurniansyah
- Division of Sleep and Circadian DisordersDepartment of Medicine, Brigham and Women's HospitalBostonMassachusettsUSA
| | - Martha Daviglus
- Department of Medicine, Institute for Minority Health ResearchUniversity of Illinois at ChicagoChicagoIllinoisUSA
| | - Carmen R. Isasi
- Department of Epidemiology & Population HealthDepartment of PediatricsAlbert Einstein College of MedicineBronxNew YorkUSA
| | - Robert Kaplan
- Department of Epidemiology & Population HealthDepartment of PediatricsAlbert Einstein College of MedicineBronxNew YorkUSA
- Division of Public Health SciencesFred Hutchinson Cancer Research CenterSeattleWashingtonUSA
| | - Melissa Lamar
- Department of Medicine, Institute for Minority Health ResearchUniversity of Illinois at ChicagoChicagoIllinoisUSA
- Rush Alzheimer's Disease Research CenterRush University Medical CenterChicagoIllinoisUSA
| | - Krista M. Perreira
- Department of Social MedicineUniversity of North Carolina School of MedicineChapel HillNorth CarolinaUSA
| | - Sylvia Wassertheil‐Smoller
- Department of Epidemiology & Population HealthDepartment of PediatricsAlbert Einstein College of MedicineBronxNew YorkUSA
| | - Ariana Stickel
- Department of Neurosciences and Shiley‐Marcos Alzheimer's Disease CenterUniversity of California, San DiegoLa JollaCaliforniaUSA
| | - Bharat Thyagarajan
- Department of Laboratory Medicine and PathologyUniversity of MinnesotaMinneapolisMinnesotaUSA
| | - Donglin Zeng
- Department of Biostatistics, Gillings School of Global Public HealthUniversity of North CarolinaChapel HillNorth CarolinaUSA
| | - Myriam Fornage
- Institute of Molecular MedicineThe University of Texas Health Science Center at HoustonHoustonTexasUSA
| | - Charles S. DeCarli
- Department of NeurologyCenter for NeuroscienceUniversity of California at DavisSacramentoCaliforniaUSA
| | - Hector M. González
- Department of Neurosciences and Shiley‐Marcos Alzheimer's Disease CenterUniversity of California, San DiegoLa JollaCaliforniaUSA
| | - Tamar Sofer
- Division of Sleep and Circadian DisordersDepartment of Medicine, Brigham and Women's HospitalBostonMassachusettsUSA
- Department of MedicineHarvard Medical SchoolBostonMassachusettsUSA
- Department of BiostatisticsHarvard T.H. Chan School of Public HealthBostonMassachusettsUSA
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10
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Fogle BM, Tsai J, Mota N, Harpaz-Rotem I, Krystal JH, Southwick SM, Pietrzak RH. The National Health and Resilience in Veterans Study: A Narrative Review and Future Directions. Front Psychiatry 2020; 11:538218. [PMID: 33362593 PMCID: PMC7755975 DOI: 10.3389/fpsyt.2020.538218] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 10/27/2020] [Indexed: 12/26/2022] Open
Abstract
United States (U.S.) veterans are substantially older than their non-veteran counterparts. However, nationally representative, population-based data on the unique health needs of this population are lacking. Such data are critical to informing the design of large-scale outreach initiatives, and to ensure the effectiveness of service care delivery both within and outside of the Veterans Affairs healthcare system. The National Health and Resilience in Veterans Study (NHRVS) is a contemporary, nationally representative, prospective study of two independent cohorts (n = 3,157 and n = 1,484) of U.S. veterans, which is examining longitudinal changes, and key risk and protective factors for several health outcomes. In this narrative review, we summarize the main findings of all NHRVS studies (n = 82) published as of June 2020, and discuss the clinical implications, limitations, and future directions of this study. Review of these articles was organized into six major topic areas: post-traumatic stress disorder, suicidality, aging, resilience and post-traumatic growth, special topics relevant to veterans, and genetics and epigenetics. Collectively, results of these studies suggest that while a significant minority of veterans screen positive for mental disorders, the majority are psychologically resilient. They further suggest that prevention and treatment efforts designed to promote protective psychosocial characteristics (i.e., resilience, gratitude, purpose in life), and social connectedness (i.e., secure attachment, community integration, social engagement) help mitigate risk for mental disorders, and promote psychological resilience and post-traumatic growth in this population.
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Affiliation(s)
- Brienna M. Fogle
- U.S. Department of Veterans Affairs National Center for Posttraumatic Stress Disorder, VA Connecticut Healthcare System, West Haven, CT, United States
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, United States
| | - Jack Tsai
- U.S. Department of Veterans Affairs National Center for Posttraumatic Stress Disorder, VA Connecticut Healthcare System, West Haven, CT, United States
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, United States
| | - Natalie Mota
- U.S. Department of Veterans Affairs National Center for Posttraumatic Stress Disorder, VA Connecticut Healthcare System, West Haven, CT, United States
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, United States
| | - Ilan Harpaz-Rotem
- U.S. Department of Veterans Affairs National Center for Posttraumatic Stress Disorder, VA Connecticut Healthcare System, West Haven, CT, United States
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, United States
| | - John H. Krystal
- U.S. Department of Veterans Affairs National Center for Posttraumatic Stress Disorder, VA Connecticut Healthcare System, West Haven, CT, United States
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, United States
| | - Steven M. Southwick
- U.S. Department of Veterans Affairs National Center for Posttraumatic Stress Disorder, VA Connecticut Healthcare System, West Haven, CT, United States
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, United States
| | - Robert H. Pietrzak
- U.S. Department of Veterans Affairs National Center for Posttraumatic Stress Disorder, VA Connecticut Healthcare System, West Haven, CT, United States
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, United States
- Department of Social and Behavioral Sciences, Yale School of Public Health, New Haven, CT, United States
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11
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Cao W, Tian S, Zhang H, Zhu W, An K, Shi J, Yuan Y, Wang S. Association of Low-Density Lipoprotein Receptor-Related Protein 1 and Its rs1799986 Polymorphism With Mild Cognitive Impairment in Chinese Patients With Type 2 Diabetes. Front Neurosci 2020; 14:743. [PMID: 33013281 PMCID: PMC7516055 DOI: 10.3389/fnins.2020.00743] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 06/23/2020] [Indexed: 12/28/2022] Open
Abstract
Background Low-density lipoprotein receptor-related protein 1 (LRP1) is involved in cerebral glucose metabolism and amyloid-β clearance. This study aimed to investigate the pathogenetic roles of LRP1 and its rs1799986 polymorphism in mild cognitive impairment (MCI) among patients with type 2 diabetes mellitus (T2DM). Methods A total of 166 Chinese patients with T2DM were enrolled and divided into two groups according to Montreal Cognitive Assessment (MoCA) scores. Neuropsychological tests were performed. Soluble LRP1 (sLRP1) levels were assessed using enzyme-linked immunosorbent assay, and the genotype of LRP1 rs1799986 was detected using the Sequenom method. Results Diabetic patients with MCI (n = 60) exhibited significantly lower plasma sLRP1 levels (p = 0.033) and worse glucose control (p = 0.009) than the healthy cognition controls (n = 106). Multivariate regression analysis revealed plasma sLRP1 levels [odds ratio (OR) = 0.971, p = 0.005] and HbA1c (OR = 1.298, p = 0.003) as a risk factor for MCI in diabetic patients, in addition to insulin use and hypertension. However, there was no association between plasma sLRP1 levels and HbA1c. After adjusting for age, sex, and education level, plasma sLRP1 levels in the MCI group were negatively correlated with Stroop Color Word Test B number (r = −0.335, p = 0.011), which represents selective attention, cognitive flexibility, and processing speed. Additionally, patients with T2DM carrying the T allele of LRP1 rs1799986 showed higher Auditory Verbal Learning Test (AVLT) delayed recall scores (p = 0.025). Conclusion Decreased plasma sLRP1 levels are associated with MCI, particularly with attention dysfunction, in patients with T2DM. Moreover, the T allele of LRP1 rs1799986 may decrease susceptibility to MCI. Further studies with large cohorts should be designed to elucidate the roles of LRP1 in hyperglycemia-induced cognitive decline.
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Affiliation(s)
- Wuyou Cao
- Department of Endocrinology, Affiliated Zhongda Hospital of Southeast University, Nanjing, China.,Medical School of Southeast University, Nanjing, China
| | - Sai Tian
- Department of Endocrinology, Affiliated Zhongda Hospital of Southeast University, Nanjing, China.,Medical School of Southeast University, Nanjing, China
| | - Haoqiang Zhang
- Department of Endocrinology, Affiliated Zhongda Hospital of Southeast University, Nanjing, China.,Medical School of Southeast University, Nanjing, China
| | - Wenwen Zhu
- Department of Endocrinology, Affiliated Zhongda Hospital of Southeast University, Nanjing, China.,Medical School of Southeast University, Nanjing, China
| | - Ke An
- Department of Endocrinology, Affiliated Zhongda Hospital of Southeast University, Nanjing, China.,Medical School of Southeast University, Nanjing, China
| | - Jijing Shi
- Department of Endocrinology, Affiliated Zhongda Hospital of Southeast University, Nanjing, China.,Medical School of Southeast University, Nanjing, China
| | - Yang Yuan
- Department of Endocrinology, Affiliated Zhongda Hospital of Southeast University, Nanjing, China.,Medical School of Southeast University, Nanjing, China
| | - Shaohua Wang
- Department of Endocrinology, Affiliated Zhongda Hospital of Southeast University, Nanjing, China
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12
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Averill LA, Abdallah CG, Levey DF, Han S, Harpaz-Rotem I, Kranzler HR, Southwick SM, Krystal JH, Gelernter J, Pietrzak RH. Apolipoprotein E gene polymorphism, posttraumatic stress disorder, and cognitive function in older U.S. veterans: Results from the National Health and Resilience in Veterans Study. Depress Anxiety 2019; 36:834-845. [PMID: 31385647 DOI: 10.1002/da.22912] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Revised: 03/13/2019] [Accepted: 04/05/2019] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Although the ε4 allele of the apolipoprotein E (APOE) gene and posttraumatic stress disorder (PTSD) have been linked to cognitive dysfunction and dementia risk, it is unknown whether they interact to predict cognitive dysfunction. METHODS We analyzed data from European-American (EA) veterans who participated in the National Health and Resilience in Veterans Study (NHRVS): main sample (n = 1,386) and primary replication sample (n = 509). EAs from the Yale-Penn Study cohort (n = 948) served as a second replication sample. Multivariable analyses were conducted to evaluate the predictive effects of ε4 carrier status and PTSD on cognitive functioning, with a focus on whether PTSD moderates the effect of ε4 carrier status. RESULTS APOE ε4 allele carrier status (d = 0.15 and 0.17 in the main and primary replication NHRVS samples, respectively) and PTSD (d = 0.31 and 0.17, respectively) were independently associated with lower cognitive functioning. ε4 carriers with PTSD scored lower than those without PTSD (d = 0.68 and 1.29, respectively) with the most pronounced differences in executive function (d's = 0.75-1.50) and attention/concentration (d's = 0.62-1.33). A significant interaction was also observed in the Yale-Penn sample, with ε4 carriers with PTSD making more perseverative errors on a measure of executive function than those without PTSD (24.7% vs. 17.6%; d = 0.59). CONCLUSIONS APOE ε4 allele carriers with PTSD have substantially greater cognitive difficulties than ε4 carriers without PTSD. These results underscore the importance of assessing, monitoring, and treating PTSD in trauma-affected individuals who are at genetic risk for cognitive decline and dementia.
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Affiliation(s)
- Lynnette A Averill
- U.S. Department of Veterans Affairs National Center for PTSD, Clinical Neurosciences Division, VA Connecticut Healthcare System, West Haven, Connecticut.,Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut
| | - Chadi G Abdallah
- U.S. Department of Veterans Affairs National Center for PTSD, Clinical Neurosciences Division, VA Connecticut Healthcare System, West Haven, Connecticut.,Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut
| | - Daniel F Levey
- U.S. Department of Veterans Affairs National Center for PTSD, Clinical Neurosciences Division, VA Connecticut Healthcare System, West Haven, Connecticut.,Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut.,Departments of Genetics and Neurobiology, VA Connecticut Healthcare System, West Haven, Connecticut
| | - Shizhong Han
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, Maryland
| | - Ilan Harpaz-Rotem
- U.S. Department of Veterans Affairs National Center for PTSD, Clinical Neurosciences Division, VA Connecticut Healthcare System, West Haven, Connecticut.,Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut
| | - Henry R Kranzler
- Department of Psychiatry, Center for Studies of Addiction, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania.,Veterans Integrated Service Network 4 Mental Illness Research Education and Clinical Center, Corporal Michael J. Crescenz VA Medical Center, Philadelphia, Pennsylvania
| | - Steven M Southwick
- U.S. Department of Veterans Affairs National Center for PTSD, Clinical Neurosciences Division, VA Connecticut Healthcare System, West Haven, Connecticut.,Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut
| | - John H Krystal
- U.S. Department of Veterans Affairs National Center for PTSD, Clinical Neurosciences Division, VA Connecticut Healthcare System, West Haven, Connecticut.,Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut
| | - Joel Gelernter
- U.S. Department of Veterans Affairs National Center for PTSD, Clinical Neurosciences Division, VA Connecticut Healthcare System, West Haven, Connecticut.,Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut.,Departments of Genetics and Neurobiology, VA Connecticut Healthcare System, West Haven, Connecticut
| | - Robert H Pietrzak
- U.S. Department of Veterans Affairs National Center for PTSD, Clinical Neurosciences Division, VA Connecticut Healthcare System, West Haven, Connecticut.,Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut
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13
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Chaudhury S, Brookes KJ, Patel T, Fallows A, Guetta-Baranes T, Turton JC, Guerreiro R, Bras J, Hardy J, Francis PT, Croucher R, Holmes C, Morgan K, Thomas AJ. Alzheimer's disease polygenic risk score as a predictor of conversion from mild-cognitive impairment. Transl Psychiatry 2019; 9:154. [PMID: 31127079 PMCID: PMC6534556 DOI: 10.1038/s41398-019-0485-7] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 04/05/2019] [Accepted: 04/10/2019] [Indexed: 11/08/2022] Open
Abstract
Mild-cognitive impairment (MCI) occurs in up to one-fifth of individuals over the age of 65, with approximately a third of MCI individuals converting to dementia in later life. There is a growing necessity for early identification for those at risk of dementia as pathological processes begin decades before onset of symptoms. A cohort of 122 individuals diagnosed with MCI and followed up for a 36-month period for conversion to late-onset Alzheimer's disease (LOAD) were genotyped on the NeuroChip array along with pathologically confirmed cases of LOAD and cognitively normal controls. Polygenic risk scores (PRS) for each individual were generated using PRSice-2, derived from summary statistics produced from the International Genomics of Alzheimer's Disease Project (IGAP) genome-wide association study. Predictability models for LOAD were developed incorporating the PRS with APOE SNPs (rs7412 and rs429358), age and gender. This model was subsequently applied to the MCI cohort to determine whether it could be used to predict conversion from MCI to LOAD. The PRS model for LOAD using area under the precision-recall curve (AUPRC) calculated a predictability for LOAD of 82.5%. When applied to the MCI cohort predictability for conversion from MCI to LOAD was 61.0%. Increases in average PRS scores across diagnosis group were observed with one-way ANOVA suggesting significant differences in PRS between the groups (p < 0.0001). This analysis suggests that the PRS model for LOAD can be used to identify individuals with MCI at risk of conversion to LOAD.
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Affiliation(s)
| | | | - Tulsi Patel
- Human Genetics Group, University of Nottingham, Nottingham, UK
| | - Abigail Fallows
- Human Genetics Group, University of Nottingham, Nottingham, UK
| | | | - James C Turton
- Human Genetics Group, University of Nottingham, Nottingham, UK
| | - Rita Guerreiro
- UK Dementia Research Institute at University College London and ION Department of Neurodegenerative Disease, London, UK
| | - Jose Bras
- UK Dementia Research Institute at University College London and ION Department of Neurodegenerative Disease, London, UK
| | - John Hardy
- UK Dementia Research Institute at University College London and ION Department of Neurodegenerative Disease, London, UK
| | - Paul T Francis
- Brains for Dementia Research Resource, Wolfson CARD, King's College London, London, UK
| | | | - Clive Holmes
- Faculty of Medicine, University of Southampton, Southampton, UK
| | - Kevin Morgan
- Human Genetics Group, University of Nottingham, Nottingham, UK
| | - A J Thomas
- Institute of Neuroscience Biomedical Research Building Campus for Ageing and Vitality Newcastle University, Newcastle upon Tyne, NE4 5PL, UK
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14
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Huang R, Tian S, Han J, Lin H, Guo D, Wang J, An K, Wang S. U-Shaped Association Between Serum Uric Acid Levels and Cognitive Functions in Patients with Type 2 Diabetes: A Cross-Sectional Study. J Alzheimers Dis 2019; 69:135-144. [PMID: 30958355 DOI: 10.3233/jad-181126] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Rong Huang
- Department of Endocrinology, Affiliated Zhongda Hospital of Southeast University, Nanjing, PR China
- School of Medicine, Southeast University, Nanjing, PR China
| | - Sai Tian
- Department of Endocrinology, Affiliated Zhongda Hospital of Southeast University, Nanjing, PR China
- School of Medicine, Southeast University, Nanjing, PR China
| | - Jing Han
- Department of Endocrinology, Affiliated Zhongda Hospital of Southeast University, Nanjing, PR China
| | - Hongyan Lin
- Department of Endocrinology, Affiliated Zhongda Hospital of Southeast University, Nanjing, PR China
- School of Medicine, Southeast University, Nanjing, PR China
| | - Dan Guo
- Department of Endocrinology, Affiliated Zhongda Hospital of Southeast University, Nanjing, PR China
- School of Medicine, Southeast University, Nanjing, PR China
| | - Jiaqi Wang
- Department of Endocrinology, Affiliated Zhongda Hospital of Southeast University, Nanjing, PR China
- School of Medicine, Southeast University, Nanjing, PR China
| | - Ke An
- Department of Endocrinology, Affiliated Zhongda Hospital of Southeast University, Nanjing, PR China
- School of Medicine, Southeast University, Nanjing, PR China
| | - Shaohua Wang
- Department of Endocrinology, Affiliated Zhongda Hospital of Southeast University, Nanjing, PR China
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