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Winarni TI, Hwang YH, Rivera SM, Hessl D, Durbin-Johnson BP, Utari A, Hagerman R, Tassone F. Apolipoproteine and KLOTHO Gene Variants Do Not Affect the Penetrance of Fragile X-Associated Tremor/Ataxia Syndrome. Int J Mol Sci 2024; 25:8103. [PMID: 39125677 PMCID: PMC11312271 DOI: 10.3390/ijms25158103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2024] [Revised: 07/18/2024] [Accepted: 07/20/2024] [Indexed: 08/12/2024] Open
Abstract
In this study, the potential role and interaction of the APOε and KLOTHO genes on the penetrance of fragile X-associated tremor/ataxia syndrome (FXTAS) and on the IQ trajectory were investigated. FXTAS was diagnosed based on molecular, clinical and radiological criteria. Males with the premutation (PM) over 50 years, 165 with and 34 without an FXTAS diagnosis, were included in this study and were compared based on their APO (ε2-ε3-ε4) and KLOTHO variant (KL-VS) genotypes. The effect of APOε4 on FXTAS stage and on diagnosis did not differ significantly by KL-VS genotype with interaction effect p = 0.662 and p = 0.91, respectively. In the FXTAS individuals with an APOε2 allele, a marginal significance was observed towards a larger decline in verbal IQ (VIQ) in individuals with an APOε4 allele compared to those without an APOε4 allele (p = 0.071). In conclusion, our findings suggest that the APOε4 and KL-VS genotypes alone or through their interaction effect do not appear to predispose to either FXTAS diagnosis or stage in male carriers of the PM allele. A further study is needed to establish the trend of IQ decline in the FXTAS individuals who carry APOε4 with APOε2 compared to those without APOε4.
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Affiliation(s)
- Tri Indah Winarni
- Center for Biomedical Research (CEBIOR), Faculty of Medicine, Universitas Diponegoro, Semarang 50275, Central Java, Indonesia; (T.I.W.); (A.U.)
| | - Ye Hyun Hwang
- Department of Biochemistry and Molecular Medicine, School of Medicine, University of California Davis, Sacramento, CA 95817, USA;
| | - Susan M. Rivera
- Department of Psychology, University of Marlyand, College Park, MD 20742, USA;
- MIND Institute, University of California Davis Medical Center, Sacramento, CA 95817, USA; (D.H.); (R.H.)
| | - David Hessl
- MIND Institute, University of California Davis Medical Center, Sacramento, CA 95817, USA; (D.H.); (R.H.)
- Department of Psychiatry and Behavioral Sciences, School of Medicine, University of California Davis, Sacramento, CA 95817, USA
| | - Blythe P. Durbin-Johnson
- Division of Biostatistics, School of Medicine, University of California Davis, Davis, CA 95616, USA;
| | - Agustini Utari
- Center for Biomedical Research (CEBIOR), Faculty of Medicine, Universitas Diponegoro, Semarang 50275, Central Java, Indonesia; (T.I.W.); (A.U.)
- Department of Pediatrics, Faculty of Medicine, Universitas Diponegoro, Semarang 50275, Central Java, Indonesia
| | - Randi Hagerman
- MIND Institute, University of California Davis Medical Center, Sacramento, CA 95817, USA; (D.H.); (R.H.)
- Department of Pediatrics, School of Medicine, University of California Davis, Sacramento, CA 95817, USA
| | - Flora Tassone
- Department of Biochemistry and Molecular Medicine, School of Medicine, University of California Davis, Sacramento, CA 95817, USA;
- MIND Institute, University of California Davis Medical Center, Sacramento, CA 95817, USA; (D.H.); (R.H.)
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Ahmed S, Pande AH, Sharma SS. Therapeutic potential of ApoE-mimetic peptides in CNS disorders: Current perspective. Exp Neurol 2022; 353:114051. [DOI: 10.1016/j.expneurol.2022.114051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 02/23/2022] [Accepted: 03/14/2022] [Indexed: 02/07/2023]
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Impact of Shift Work and Long Working Hours on Worker Cognitive Functions: Current Evidence and Future Research Needs. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18126540. [PMID: 34204504 PMCID: PMC8296479 DOI: 10.3390/ijerph18126540] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/10/2021] [Accepted: 06/16/2021] [Indexed: 11/17/2022]
Abstract
Particular working conditions and/or organization of working time may cause important sleep disturbances that have been proposed to be predictive of cognitive decline. In this regard, circadian rhythm misalignment induced by exposure to night work or long working hours would be responsible for cognitive impairment. Nevertheless, evidence supporting this correlation is limited and several issues still need to be elucidated. In this regard, we conducted a systematic review to evaluate the association between shift/night work and cognitive impairment and address its main determinants. Information provided by the reviewed studies suggested that night work might have serious immediate negative effects especially on cognitive domains related to attention, memory and response inhibition. Furthermore, cognitive performance would progressively worsen over consecutive night shifts or following exposure to very long work shifts. Otherwise, conflicting results emerged regarding the possible etiological role that night work chronic exposure would have on cognitive impairment. Therefore, circadian rhythm desynchronization, lack of sleep and fatigue resulting from night work may negatively impact worker’s cognitive efficiency. However, in light of the considerable methodological variability of the reviewed studies, we proposed to develop a standardized research and evaluation strategy in order to obtain a better and comprehensive understanding of this topic.
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Distribution and clinical impact of apolipoprotein E4 in subjective memory impairment and early mild cognitive impairment. Sci Rep 2020; 10:13365. [PMID: 32770103 PMCID: PMC7414226 DOI: 10.1038/s41598-020-69603-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Accepted: 06/15/2020] [Indexed: 11/24/2022] Open
Abstract
The apolipoprotein E (APOE) e4 allele is the most common genetic variant associated with Alzheimer’s disease (AD). We sought to investigate the distribution of APOE genotypes across the full clinical AD spectrum including AD, late-stage amnestic mild cognitive impairment (L-aMCI), early-stage aMCI (E-aMCI), subjective memory impairment (SMI), and controls. We prospectively recruited 713 AD patients, 735 aMCI patients, 575 SMI patients, and 8,260 individuals as controls. The frequency of the APOE e4 allele revealed an ordered fashion in the AD (30.8%), L-aMCI (24.0%), E-aMCI (15.1%), SMI (11.7%), and control (9.1%) groups. APOE e3/e4 and e4/e4 genotype frequencies also appeared in an ordered fashion in the AD group (39.1% of e3/e4 and 10.9% of e4/e4), as well as the L-aMCI (28.3% and 9.4%), E-aMCI (22.3% and 3.7%), SMI (18.3% and 1.9%), and control (15.1% and 0.8%) groups. In the comparisons of APOE e3/e3 vs. e3/e4 genotypes, all patient groups had a higher frequency of APOE e3/e4 relative to the control group. Relative to the SMI and E-aMCI groups, the AD and L-aMCI groups had higher frequency of the APOE e3/e4 genotype, and the AD group had a higher frequency relative to the L-aMCI group. However, there was no significant difference between the E-aMCI and SMI groups. In our longitudinal data, APOE e4 carrier showed a steeper incline slope in a clinical dementia rating sum of boxes (CDR-SB) score than APOE e4 non-carrier in SMI (B = 0.0066, p = 0.0104), E-aMCI (B = 0.0313, p < 0.0001), and L-aMCI (B = 0.0178, p = 0.0007). APOE e4 carrier showed a steeper decline slope in the CDR-SB than APOE e4 non-carrier in AD (B = − 0.0309, p = 0.0003). These findings suggest that E-aMCI and SMI are associated with a similarly increased frequency of the APOE e4 allele compared to controls, suggesting a greater genetic risk for AD and the importance of monitoring the allele more closely.
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5
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Influence of apolipoprotein-E genotype on brain amyloid load and longitudinal trajectories. Neurobiol Aging 2020; 94:111-120. [PMID: 32603776 DOI: 10.1016/j.neurobiolaging.2020.05.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 05/21/2020] [Accepted: 05/23/2020] [Indexed: 12/23/2022]
Abstract
To characterize the influence of apolipoprotein-E (APOE) genotype on cerebral Aβ load and longitudinal Aβ trajectories, [11C]Pittsburgh compound-B (PiB) positron emission tomography (PET) imaging was used to assess amyloid load in a clinically heterogeneous cohort of 428 elderly participants with known APOE genotype. Serial [11C]PiB data and a repeated measures model were used to model amyloid trajectories in a subset of 235 participants classified on the basis of APOE genotype. We found that APOE-ε4 was associated with increased Aβ burden and an earlier age of onset of Aβ positivity, whereas APOE-ε2 appeared to have modest protective effects against Aβ. APOE class did not predict rates of Aβ accumulation. The present study suggests that APOE modifies Alzheimer's disease risk through a direct influence on amyloidogenic processes, which manifests as an earlier age of onset of Aβ positivity, although it is likely that other genetic, environmental, and lifestyle factors are important.
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Semba RD, Tian Q, Carlson MC, Xue QL, Ferrucci L. Motoric cognitive risk syndrome: Integration of two early harbingers of dementia in older adults. Ageing Res Rev 2020; 58:101022. [PMID: 31996326 PMCID: PMC7697173 DOI: 10.1016/j.arr.2020.101022] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 01/10/2020] [Accepted: 01/21/2020] [Indexed: 12/17/2022]
Abstract
Dementia is characterized by a long preclinical phase that may last years to decades before the onset of mild cognitive impairment. Slow gait speed and subjective memory complaint commonly co-occur during this preclinical phase, and each is a strong independent predictor of cognitive decline and dementia. Motoric cognitive risk (MCR) syndrome is a pre-dementia syndrome that combines these two early harbingers of dementia. The risk of cognitive decline or dementia is stronger for MCR than for either slow gait speed or subjective memory complaint alone. Slow gait speed and subjective memory complaint have several common risk factors: cardiovascular disease, diabetes mellitus, abnormal cortisol profiles, low vitamin D levels, brain atrophy with decreased hippocampal volume, and increased deposition of beta-amyloid in the brain. The underlying pathogenesis of MCR remains poorly understood. Metabolomics and proteomics have great potential to provide new insights into biological pathways involved in MCR during the long preclinical phase preceding dementia.
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Affiliation(s)
- Richard D Semba
- Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
| | - Qu Tian
- National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Michelle C Carlson
- Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Qian-Li Xue
- Departments of Medicine, Biostatistics, and Epidemiology, Johns Hopkins University, Baltimore, MD, USA
| | - Luigi Ferrucci
- National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
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Cheng CH, Hsiao FJ, Hsieh YW, Wang PN. Dysfunction of Inferior Parietal Lobule During Sensory Gating in Patients With Amnestic Mild Cognitive Impairment. Front Aging Neurosci 2020; 12:39. [PMID: 32158387 PMCID: PMC7052059 DOI: 10.3389/fnagi.2020.00039] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 02/06/2020] [Indexed: 12/19/2022] Open
Abstract
Patients with amnestic mild cognitive impairment (aMCI) demonstrate significant cognitive deficits, especially in the memory aspect. The memory deficiency might be attributed to the difficulties in the inhibitory function to suppress redundant stimuli. Sensory gating (SG) refers to the attenuation of neural responses to the second identical stimulus in a paired-click paradigm, in which auditory stimuli are delivered in pairs with inter-stimulus intervals (ISI) of 500 ms and inter-pair intervals of 6-8 s. It is considered as an electrophysiological signal to reflect the brain's automatic response to gate out repetitive sensory inputs. However, there has been no study systematically investigating SG function in aMCI patients. Thus, the present study used magnetoencephalography (MEG) to record neuromagnetic responses to a paired-click paradigm in 23 healthy controls (HC) and 26 aMCI patients. The Stimulus 2/Stimulus 1 (S2/S1) amplitude ratio was used to represent the SG function. Compared to HC, aMCI patients showed M50 SG deficits in the left inferior frontal gyrus (IFG) and right inferior parietal lobule (IPL). M100 SG defects were also observed in the right IPL. Based on the ROIs showing significant between-group SG differences, we found that a more deficient M50 SG function in the right IPL was associated with poorer performance in the immediate recall of Logic Memory (LM), Chinese Version Verbal Learning Test (CVVLT) and Digit Span Backward (DSB) Test. Furthermore, the M50 SG ratios of the right IPL together with the neuropsychological performance of LM and CVVLT demonstrated very good accuracy in the discrimination of aMCI from HC. In conclusion, compared to HC, aMCI patients showed a significant SG deficit in the right IPL, which was correlated with the auditory short-term memory function. We suggest the combination of SG in the right IPL, LM and CVVLT to be sensitive indicators to differentiate aMCI patients from HC.
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Affiliation(s)
- Chia-Hsiung Cheng
- Department of Occupational Therapy, Graduate Institute of Behavioral Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan.,Department of Psychiatry, Chang Gung Memorial Hospital, Linkou, Taiwan.,Laboratory of Brain Imaging and Neural Dynamics (BIND Lab), Chang Gung University, Taoyuan, Taiwan
| | - Fu-Jung Hsiao
- Brain Research Center, National Yang-Ming University, Taipei, Taiwan
| | - Yu-Wei Hsieh
- Department of Occupational Therapy, Graduate Institute of Behavioral Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan.,Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Pei-Ning Wang
- Brain Research Center, National Yang-Ming University, Taipei, Taiwan.,Division of General Neurology, Department of Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan.,Department of Neurology, National Yang-Ming University, Taipei, Taiwan
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Abdelnour C, Rodríguez-Gómez O, Alegret M, Valero S, Moreno-Grau S, Sanabria Á, Hernández I, Rosende-Roca M, Vargas L, Mauleón A, Sánchez D, Espinosa A, Ortega G, Pérez-Cordón A, Diego S, Gailhajanet A, Guitart M, Sotolongo-Grau Ó, Ruiz A, Tárraga L, Boada M. Impact of Recruitment Methods in Subjective Cognitive Decline. J Alzheimers Dis 2018; 57:625-632. [PMID: 28269773 DOI: 10.3233/jad-160915] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Recruitment methods can determine sample characteristics in mild cognitive impairment and Alzheimer's disease dementia, but little is known about its influence in subjective cognitive decline (SCD). OBJECTIVE To determine the influence of two types of recruitment methods in the characteristics of individuals with SCD. METHODS We select and compare clinical and neuropsychological features, and frequency of APOE ɛ4 allele of 326 subjects with SCD from two cohorts: Open House Initiative (OHI) versus Memory Unit (MU). A logistic regression analysis (LRA), using gender and years of education as covariates, was used to examine the neuropsychological variables. RESULTS The OHI sample were mostly women (75.9% versus 64.5%, p < 0.05), with higher educational level (12.15 [3.71] versus 10.70 [3.80] years, p = 0.001), and more family history of dementia (138 [62.7%] versus 44 [41.5%], p < 0.001) than the MU sample. Also, the OHI sample showed better overall neuropsychological performance than the MU sample, and after a LRA, this trend continued in automatic response inhibition capacity, abstract reasoning, and recognition memory. We did not find differences in age, depression history, and/or APOE ɛ4 allele frequency. CONCLUSION SCD subjects showed different demographic and neuropsychological characteristics depending on the recruitment method, which should be taken into account in the design of research studies with this target population.
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Affiliation(s)
- Carla Abdelnour
- Alzheimer Research Center and Memory Clinic of Fundació ACE, Institut Catalá de Neurociències Aplicades, Barcelona, Spain
| | - Octavio Rodríguez-Gómez
- Alzheimer Research Center and Memory Clinic of Fundació ACE, Institut Catalá de Neurociències Aplicades, Barcelona, Spain
| | - Montserrat Alegret
- Alzheimer Research Center and Memory Clinic of Fundació ACE, Institut Catalá de Neurociències Aplicades, Barcelona, Spain
| | - Sergi Valero
- Department of Psychiatry, Hospital Universitari Vall d'Hebron, CIBERSAM, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Sonia Moreno-Grau
- Alzheimer Research Center and Memory Clinic of Fundació ACE, Institut Catalá de Neurociències Aplicades, Barcelona, Spain
| | - Ángela Sanabria
- Alzheimer Research Center and Memory Clinic of Fundació ACE, Institut Catalá de Neurociències Aplicades, Barcelona, Spain
| | - Isabel Hernández
- Alzheimer Research Center and Memory Clinic of Fundació ACE, Institut Catalá de Neurociències Aplicades, Barcelona, Spain
| | - Maitee Rosende-Roca
- Alzheimer Research Center and Memory Clinic of Fundació ACE, Institut Catalá de Neurociències Aplicades, Barcelona, Spain
| | - Liliana Vargas
- Alzheimer Research Center and Memory Clinic of Fundació ACE, Institut Catalá de Neurociències Aplicades, Barcelona, Spain
| | - Ana Mauleón
- Alzheimer Research Center and Memory Clinic of Fundació ACE, Institut Catalá de Neurociències Aplicades, Barcelona, Spain
| | - Domingo Sánchez
- Alzheimer Research Center and Memory Clinic of Fundació ACE, Institut Catalá de Neurociències Aplicades, Barcelona, Spain
| | - Ana Espinosa
- Alzheimer Research Center and Memory Clinic of Fundació ACE, Institut Catalá de Neurociències Aplicades, Barcelona, Spain
| | - Gemma Ortega
- Alzheimer Research Center and Memory Clinic of Fundació ACE, Institut Catalá de Neurociències Aplicades, Barcelona, Spain
| | - Alba Pérez-Cordón
- Alzheimer Research Center and Memory Clinic of Fundació ACE, Institut Catalá de Neurociències Aplicades, Barcelona, Spain
| | - Susana Diego
- Alzheimer Research Center and Memory Clinic of Fundació ACE, Institut Catalá de Neurociències Aplicades, Barcelona, Spain
| | - Anna Gailhajanet
- Alzheimer Research Center and Memory Clinic of Fundació ACE, Institut Catalá de Neurociències Aplicades, Barcelona, Spain
| | - Marina Guitart
- Alzheimer Research Center and Memory Clinic of Fundació ACE, Institut Catalá de Neurociències Aplicades, Barcelona, Spain
| | - Óscar Sotolongo-Grau
- Alzheimer Research Center and Memory Clinic of Fundació ACE, Institut Catalá de Neurociències Aplicades, Barcelona, Spain
| | - Agustín Ruiz
- Alzheimer Research Center and Memory Clinic of Fundació ACE, Institut Catalá de Neurociències Aplicades, Barcelona, Spain
| | - Lluís Tárraga
- Alzheimer Research Center and Memory Clinic of Fundació ACE, Institut Catalá de Neurociències Aplicades, Barcelona, Spain
| | - Mercè Boada
- Alzheimer Research Center and Memory Clinic of Fundació ACE, Institut Catalá de Neurociències Aplicades, Barcelona, Spain
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van der Flier WM, Scheltens P. Amsterdam Dementia Cohort: Performing Research to Optimize Care. J Alzheimers Dis 2018; 62:1091-1111. [PMID: 29562540 PMCID: PMC5870023 DOI: 10.3233/jad-170850] [Citation(s) in RCA: 196] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/04/2017] [Indexed: 01/01/2023]
Abstract
The Alzheimer center of the VU University Medical Center opened in 2000 and was initiated to combine both patient care and research. Together, to date, all patients forming the Amsterdam Dementia Cohort number almost 6,000 individuals. In this cohort profile, we provide an overview of the results produced based on the Amsterdam Dementia Cohort. We describe the main results over the years in each of these research lines: 1) early diagnosis, 2) heterogeneity, and 3) vascular factors. Among the most important research efforts that have also impacted patients' lives and/or the research field, we count the development of novel, easy to use diagnostic measures such as visual rating scales for MRI and the Amsterdam IADL Questionnaire, insight in different subgroups of AD, and findings on incidence and clinical sequelae of microbleeds. Finally, we describe in the outlook how our research endeavors have improved the lives of our patients.
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Affiliation(s)
- Wiesje M. van der Flier
- Department of Neurology, Alzheimer Center, VU University Medical Center, Amsterdam Neuroscience, Amsterdam, The Netherlands
- Department of Epidemiology and Biostatistics, VU University Medical Center, Amsterdam, The Netherlands
| | - Philip Scheltens
- Department of Neurology, Alzheimer Center, VU University Medical Center, Amsterdam Neuroscience, Amsterdam, The Netherlands
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Zhang T, Liu S, Zhang Y, Guan Y, Wang X, Zhao L, Shi Z, Yue W, Zhang Y, Liu S, Ji Y. Apolipoprotein E e4 Allele Is Associated with Subjective Cognitive Decline: A Meta-Analysis. Neuroepidemiology 2017; 49:165-173. [PMID: 29169179 DOI: 10.1159/000482018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 10/07/2017] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND AND PURPOSE Subjective cognitive decline (SCD) is a condition associated with increased risk of Alzheimer's disease. This study performs a meta-analysis to estimate the prevalence of the Apolipoprotein E e4 (APOE e4) allele in SCD and the association of APOE e4 with SCD. METHODS The MEDLINE, EMBASE, and Cochrane Library databases were searched. Meta-analyses were conducted using STATA 12.0 software. When significant heterogeneity was present (I2 >50% and p < 0.05), we conducted stratified and meta-regression analyses to explore possible reasons for heterogeneity. RESULTS We selected a total of 28 studies that were conducted in Australia, the United States, northern Europe, middle Europe, southern Europe, and Asia. The sample size of the SCD group was 6,044. Thirteen studies included a healthy control group (total control cohort of 3,822), whereas the remaining 15 studies were single-arm studies of SCD groups. The APOE e4 allele was associated with SCD (OR 1.12 [1.00-1.25]; p = 0.04). The pooled estimate for APOE e4 carrier prevalence was 32% (95% CI 28-35). Due to the significant heterogeneity in prevalence estimates, we performed stratified and meta-regression analyses and found that age and northern European residency were significantly associated with heterogeneity. CONCLUSION The results of this meta-analysis indicate a weak association between APOE e4 and SCD. Age and northern European residency are the critical factors that determine heterogeneity in the APOE e4-associated prevalence of SCD.
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Affiliation(s)
- Ting Zhang
- Department of Neurology, Tianjin, China.,Tianjin Key Laboratory of Cerebrovascular and Neurodegenerative Diseases, Tianjin Huanhu Hospital, Tianjin, China
| | - Shuling Liu
- Department of Neurology, Tianjin, China.,Tianjin Key Laboratory of Cerebrovascular and Neurodegenerative Diseases, Tianjin Huanhu Hospital, Tianjin, China
| | - Yajing Zhang
- Department of Neurology, Tianjin, China.,Tianjin Key Laboratory of Cerebrovascular and Neurodegenerative Diseases, Tianjin Huanhu Hospital, Tianjin, China
| | - Yalin Guan
- Department of Neurology, Tianjin, China.,Tianjin Key Laboratory of Cerebrovascular and Neurodegenerative Diseases, Tianjin Huanhu Hospital, Tianjin, China
| | - Xiaodan Wang
- Department of Neurology, Tianjin, China.,Tianjin Key Laboratory of Cerebrovascular and Neurodegenerative Diseases, Tianjin Huanhu Hospital, Tianjin, China
| | - Lei Zhao
- Department of Neurology, Tianjin, China.,Tianjin Key Laboratory of Cerebrovascular and Neurodegenerative Diseases, Tianjin Huanhu Hospital, Tianjin, China
| | - Zhihong Shi
- Department of Neurology, Tianjin, China.,Tianjin Key Laboratory of Cerebrovascular and Neurodegenerative Diseases, Tianjin Huanhu Hospital, Tianjin, China
| | - Wei Yue
- Department of Neurology, Tianjin, China.,Tianjin Key Laboratory of Cerebrovascular and Neurodegenerative Diseases, Tianjin Huanhu Hospital, Tianjin, China
| | - Ying Zhang
- Department of Neurology, Tianjin, China.,Tianjin Key Laboratory of Cerebrovascular and Neurodegenerative Diseases, Tianjin Huanhu Hospital, Tianjin, China
| | - Shuai Liu
- Department of Neurology, Tianjin, China.,Tianjin Key Laboratory of Cerebrovascular and Neurodegenerative Diseases, Tianjin Huanhu Hospital, Tianjin, China
| | - Yong Ji
- Department of Neurology, Tianjin, China.,Tianjin Key Laboratory of Cerebrovascular and Neurodegenerative Diseases, Tianjin Huanhu Hospital, Tianjin, China
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11
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Rodríguez-Gómez O, Abdelnour C, Jessen F, Valero S, Boada M. Influence of Sampling and Recruitment Methods in Studies of Subjective Cognitive Decline. J Alzheimers Dis 2016; 48 Suppl 1:S99-S107. [PMID: 26402087 DOI: 10.3233/jad-150189] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Subjective cognitive decline (SCD) has been proposed as a marker of neurodegeneration in cognitively normal elderly. This idea is supported by the growing evidence that SCD is associated with Alzheimer's disease (AD) biomarkers and increases the risk of future cognitive impairment. Nevertheless, this evidence is not complete, since other studies have not found these associations. This discrepancy could have a methodological basis. It is well known that across the broad spectrum of degenerative disease from healthy controls to dementia, the research setting affects key characteristics of the sample such as age, educational level, or family history of dementia. However, virtually no studies have specifically tested the influence of sampling and recruitment methods in SCD research. Population-based samples are less biased and therefore they probably are more suitable for the study of memory complaints as a symptom at the population level. On the other hand, the memory clinic setting could introduce a set of biases that make these patients more likely to develop cognitive impairment. Thus, memory clinic would be the most cost-effective context in which to study the phenomenology of SCD due to AD and eventually recruit patients for secondary prevention trials. However, this general hypothesis needs to be tested. Studies that compare samples of patients with SCD from different settings are necessary. Sometimes it is difficult for patients with subtle forms of cognitive impairment to access specialized diagnostic centers. Based in our experience we state that Open House type initiatives may be useful for attracting these individuals to memory clinics.
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Affiliation(s)
| | - Carla Abdelnour
- Fundació ACE, Institut Català de Neurociències Aplicades, Barcelona, Spain
| | - Frank Jessen
- Department of Psychiatry, Medical Faculty, University of Cologne, German Center for Neurodegenerative Diseases (DZNE), Cologne, Germany
| | - Sergi Valero
- Psychiatry Department, Hospital Universitari Vall d'Hebron, CIBERSAM, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Merçé Boada
- Fundació ACE, Institut Català de Neurociències Aplicades, Barcelona, Spain
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12
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Abheiden CNH, van Doornik R, Aukes AM, van der Flier WM, Scheltens P, de Groot CJM. Hypertensive Disorders of Pregnancy Appear Not to Be Associated with Alzheimer's Disease Later in Life. Dement Geriatr Cogn Dis Extra 2015; 5:375-85. [PMID: 26557136 PMCID: PMC4637816 DOI: 10.1159/000439043] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Background After hypertensive disorders of pregnancy, more subjective cognitive complaints and white matter lesions are reported compared to women after normal pregnancies. Both have a causal relationship with Alzheimer's disease (AD). Aim To investigate if women whose pregnancy was complicated by hypertensive disorders have an increased risk of AD. Methods A case-control study in women with AD from the Alzheimer Center of the VU University Medical Center Amsterdam and women without AD. Paper and telephone surveys were performed. Results The response rate was 85.2%. No relation between women with (n = 104) and without AD (n = 129) reporting pregnancies complicated by hypertensive disorders (p = 0.11) was found. Women with early-onset AD reported hypertensive disorders of pregnancy more often (p = 0.02) compared to women with late-onset AD. Conclusion A reported history of hypertensive disorders of pregnancy appears not to be associated with AD later in life.
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Affiliation(s)
- Carolien N H Abheiden
- Department of Obstetrics and Gynecology, VU University Medical Center, Amsterdam, The Netherlands
| | - Rebecca van Doornik
- Department of Obstetrics and Gynecology, VU University Medical Center, Amsterdam, The Netherlands
| | - Annet M Aukes
- Department of Obstetrics and Gynecology, VU University Medical Center, Amsterdam, The Netherlands
| | - Wiesje M van der Flier
- Alzheimer Center, Department of Neurology, VU University Medical Center, Neuroscience Campus Amsterdam, Amsterdam, The Netherlands ; Department of Epidemiology and Biostatistics, VU University Medical Center, Neuroscience Campus Amsterdam, Amsterdam, The Netherlands
| | - Philip Scheltens
- Alzheimer Center, Department of Neurology, VU University Medical Center, Neuroscience Campus Amsterdam, Amsterdam, The Netherlands
| | - Christianne J M de Groot
- Department of Obstetrics and Gynecology, VU University Medical Center, Amsterdam, The Netherlands
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Cherbuin N, Sargent-Cox K, Easteal S, Sachdev P, Anstey KJ. Hippocampal atrophy is associated with subjective memory decline: The PATH Through Life study. Am J Geriatr Psychiatry 2015; 23:446-55. [PMID: 25204687 DOI: 10.1016/j.jagp.2014.07.009] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2013] [Revised: 07/04/2014] [Accepted: 07/21/2014] [Indexed: 12/31/2022]
Abstract
OBJECTIVE To investigate whether subjective memory decline (SMD) in cognitively healthy individuals is associated with hippocampal atrophy. METHODS Multiple regression analyses assessing the relationship between hippocampal atrophy over 4 years and SMD at baseline and follow-up in 305 cognitively healthy individuals aged 60-64 years free from dementia, mild cognitive impairment, and other neurological disorders. RESULTS SMD at baseline was not a significant predictor of hippocampal atrophy. However, SMD at follow-up was associated with greater hippocampal atrophy. Associations were reduced but remained significant after controlling for anxiety and depression symptomatology. CONCLUSION Hippocampal atrophy was associated with incident/persisting SMD and this association was not, or only partly, explained by anxiety and depression symptomatology. These results are consistent with a biological origin to subjective memory decline. SMD should be included in screening and neuropsychological batteries.
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Affiliation(s)
- Nicolas Cherbuin
- Centre for Research on Ageing, Health and Wellbeing, Australian National University, Canberra, Australia.
| | - Kerry Sargent-Cox
- Centre for Research on Ageing, Health and Wellbeing, Australian National University, Canberra, Australia
| | - Simon Easteal
- John Curtin School of Medical Research, Australian National University, Canberra, Australia
| | - Perminder Sachdev
- School of Psychiatry, University of New South Wales, Sydney, Australia
| | - Kaarin J Anstey
- Centre for Research on Ageing, Health and Wellbeing, Australian National University, Canberra, Australia
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14
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Berge G, Sando SB, Rongve A, Aarsland D, White LR. Apolipoprotein E ε2 genotype delays onset of dementia with Lewy bodies in a Norwegian cohort. J Neurol Neurosurg Psychiatry 2014; 85:1227-31. [PMID: 24639435 PMCID: PMC4215279 DOI: 10.1136/jnnp-2013-307228] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
BACKGROUND Results conflict concerning the relevance of APOE alleles on the development of dementia with Lewy bodies (DLB), though they are well established in connection with Alzheimer's disease (AD). The role of APOE alleles in a Norwegian cohort of patients with DLB was therefore examined compared with patients with AD and healthy control individuals. METHODS The study included 156 patients with DLB diagnosed according to the consensus criteria guidelines, 519 patients diagnosed with AD according to the National Institute of Neurological and Communicative Diseases and Stroke/Alzheimer's Disease and Related Disorders Association (NINCDS/ARDRA) criteria and 643 healthy elderly volunteers. Patients were recruited through hospitals, outpatient clinics, nursing homes or from local care authorities in central and south-western parts of Norway. Healthy individuals were recruited from caregivers and societies for retired people. RESULTS Subjects carrying an APOE ε2 allele had a reduced risk for developing DLB (OR 0.4, CI 0.3 to 0.8, p=0.004), and the onset of disease was delayed by 4 years (p=0.01, Mann-Whitney U test). Conversely, the APOE ε4 allele increased the risk for development of DLB (OR 5.9, CI 2.7 to 13.0, p<0.0005 for homozygotes). Similar results were found for patients with AD regarding the effect of APOE ε2, though the protective effect appeared to be slightly less pronounced than in DLB. This study is one of the largest regarding DLB and APOE to date. CONCLUSION The results indicate that APOE ε2, a protective factor in AD, has a clear beneficial effect on the development of DLB also.
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Affiliation(s)
- Guro Berge
- Faculty of Medicine, Department of Neuroscience, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Sigrid B Sando
- Faculty of Medicine, Department of Neuroscience, Norwegian University of Science and Technology (NTNU), Trondheim, Norway Department of Neurology, University Hospital of Trondheim, Trondheim, Norway
| | - Arvid Rongve
- Department of Psychiatry, Haugesund Hospital, Haugesund, Norway
| | - Dag Aarsland
- Department of Neurobiology, Care Sciences, and Society, Alzheimer's Disease Research Center, Karolinska Institute, Stockholm, Sweden Department of Psychiatry, Akershus University Hospital, Norway Centre for Age-Related Medicine, Stavanger University Hospital, Stavanger, Norway
| | - Linda R White
- Faculty of Medicine, Department of Neuroscience, Norwegian University of Science and Technology (NTNU), Trondheim, Norway Department of Neurology, University Hospital of Trondheim, Trondheim, Norway
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15
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Wang X, Wang H, Li H, Li T, Yu X. Frequency of the apolipoprotein E ε4 allele in a memory clinic cohort in Beijing: a naturalistic descriptive study. PLoS One 2014; 9:e99130. [PMID: 24914687 PMCID: PMC4051665 DOI: 10.1371/journal.pone.0099130] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Accepted: 05/08/2014] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVES To describe the distribution of apolipoprotein E (APOE) genotypes among an elderly Chinese patient population with memory complaints treated in a memory clinic in Beijing and to compare the ε4 allele frequency among individuals with subjective cognitive impairment (SCI), mild cognitive impairment (MCI) and Alzheimer's disease (AD). METHODS A total of 385 subjects with memory complaints participated in the study, including 216 patients with AD, 56 with MCI, 17 with SCI, and 96 with other types of cognitive impairment. A total of 75 healthy elderly control subjects were also recruited. The polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technique was used to investigate the APOE genotypes. RESULTS The frequency of the ε4 allele was 19.6 percent for the entire sample of patients who had memory complaints. The APOE allele distribution differed between women and men (22.6% and 14.9%, respectively; p<0.05) in the individuals with memory complaints. Compared with the control group (7.3%), the prevalence of the APOE ε4 allele was significantly higher in the AD (23.6%) and MCI (21.4%) groups and was slightly increased in the SCI (14.7%) group. CONCLUSIONS In the memory clinic, we observed a higher prevalence of the APOE ε4 allele among Chinese AD and MCI patients. A similar trend was observed in patients with SCI. These findings suggest that nondemented APOE ε4 allele carriers with memory complaints may have a greater genetic risk for AD and should be monitored more closely.
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Affiliation(s)
- Xiao Wang
- Dementia Care and Research Center, Peking University Institute of Mental Health (Sixth Hospital), Beijing, China
- Key Laboratory for Mental Health (Peking University), Ministry of Health, Beijing, China
| | - Huali Wang
- Dementia Care and Research Center, Peking University Institute of Mental Health (Sixth Hospital), Beijing, China
- Key Laboratory for Mental Health (Peking University), Ministry of Health, Beijing, China
| | - Huiying Li
- Dementia Care and Research Center, Peking University Institute of Mental Health (Sixth Hospital), Beijing, China
- Key Laboratory for Mental Health (Peking University), Ministry of Health, Beijing, China
- Chaoyang District Third Hospital, Beijing, China
| | - Tao Li
- Dementia Care and Research Center, Peking University Institute of Mental Health (Sixth Hospital), Beijing, China
- Key Laboratory for Mental Health (Peking University), Ministry of Health, Beijing, China
| | - Xin Yu
- Dementia Care and Research Center, Peking University Institute of Mental Health (Sixth Hospital), Beijing, China
- Key Laboratory for Mental Health (Peking University), Ministry of Health, Beijing, China
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16
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Schuch JB, Constantin PC, da Silva VK, Korb C, Bamberg DP, da Rocha TJ, Fiegenbaum M, de Oliveira A, Tisser LA, de Andrade FM. ACE polymorphism and use of ACE inhibitors: effects on memory performance. AGE (DORDRECHT, NETHERLANDS) 2014; 36:9646. [PMID: 24696269 PMCID: PMC4082601 DOI: 10.1007/s11357-014-9646-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Accepted: 03/18/2014] [Indexed: 05/19/2023]
Abstract
Memory is an important cognition function, being fundamental to the development and independence of individuals. Our aim was to investigate the influence apolipoprotein E (APOE) and angiotensin I-converting enzyme (ACE) polymorphism and ACE inhibitors use, besides their interaction on memory performance of healthy subjects over 50 years. The sample consisted of 205 subjects assessed for five types of episodic memory, using Wechsler Memory Scale-Revised (WMS-R), who answered a questionnaire about drug use and were assessed for the ACE insertion/deletion polymorphism and APOE polymorphism. We found no influence of the APOE gene. The use of ACE inhibitors beneficially influenced learning ability scores (p = 0.02). Besides, I allele carriers of ACE polymorphism showed higher verbal memory scores compared with homozygous DD. Also, we observed an interaction influencing learning ability between the ACE polymorphism and the use of inhibitors, the beneficial influence of the I allele was present only in individuals who make use of ACE inhibitors. We conclude that the ACE gene has influence on memory performance, and that this influence is modulated by ACE inhibitors use.
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Affiliation(s)
- Jaqueline B. Schuch
- />Institute of Health Sciences, Universidade Feevale, Novo Hamburgo, RS Brazil
| | | | - Vanessa K. da Silva
- />Institute of Health Sciences, Universidade Feevale, Novo Hamburgo, RS Brazil
| | - Camila Korb
- />Institute of Health Sciences, Universidade Feevale, Novo Hamburgo, RS Brazil
| | - Daiani P. Bamberg
- />Institute of Human Sciences, Letters and Arts, Universidade Feevale, Novo Hamburgo, RS Brazil
| | - Tatiane J. da Rocha
- />Basic Health Sciences Department, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, Rio Grande do Sul Brazil
| | - Marilu Fiegenbaum
- />Basic Health Sciences Department, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, Rio Grande do Sul Brazil
| | - Alcyr de Oliveira
- />Psychology Department, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, Rio Grande do Sul Brazil
| | - Luciana A. Tisser
- />Institute of Human Sciences, Letters and Arts, Universidade Feevale, Novo Hamburgo, RS Brazil
| | - Fabiana M. de Andrade
- />Institute of Health Sciences, Universidade Feevale, Novo Hamburgo, RS Brazil
- />Institute of Human Sciences, Letters and Arts, Universidade Feevale, Novo Hamburgo, RS Brazil
- />Pró-Reitoria de Pesquisa e Inovação – PROPI, sala 201 F, Universidade Feevale, RS 239, no. 2755, Novo Hamburgo, RS 93352-000 Brazil
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Jessen F, Amariglio RE, van Boxtel M, Breteler M, Ceccaldi M, Chételat G, Dubois B, Dufouil C, Ellis KA, van der Flier WM, Glodzik L, van Harten AC, de Leon MJ, McHugh P, Mielke MM, Molinuevo JL, Mosconi L, Osorio RS, Perrotin A, Petersen RC, Rabin LA, Rami L, Reisberg B, Rentz DM, Sachdev PS, de la Sayette V, Saykin AJ, Scheltens P, Shulman MB, Slavin MJ, Sperling RA, Stewart R, Uspenskaya O, Vellas B, Visser PJ, Wagner M. A conceptual framework for research on subjective cognitive decline in preclinical Alzheimer's disease. Alzheimers Dement 2014; 10:844-52. [PMID: 24798886 DOI: 10.1016/j.jalz.2014.01.001] [Citation(s) in RCA: 1773] [Impact Index Per Article: 177.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Revised: 12/23/2013] [Accepted: 01/09/2014] [Indexed: 11/26/2022]
Abstract
There is increasing evidence that subjective cognitive decline (SCD) in individuals with unimpaired performance on cognitive tests may represent the first symptomatic manifestation of Alzheimer's disease (AD). The research on SCD in early AD, however, is limited by the absence of common standards. The working group of the Subjective Cognitive Decline Initiative (SCD-I) addressed this deficiency by reaching consensus on terminology and on a conceptual framework for research on SCD in AD. In this publication, research criteria for SCD in pre-mild cognitive impairment (MCI) are presented. In addition, a list of core features proposed for reporting in SCD studies is provided, which will enable comparability of research across different settings. Finally, a set of features is presented, which in accordance with current knowledge, increases the likelihood of the presence of preclinical AD in individuals with SCD. This list is referred to as SCD plus.
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Affiliation(s)
- Frank Jessen
- Department of Psychiatry, University of Bonn, Bonn, Germany; Clinical Treatment and Research Center for Neurodegenerative Disease (KBFZ), University of Bonn, Bonn, Germany; German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany.
| | - Rebecca E Amariglio
- Department of Neurology, Harvard Medical School, Brigham and Women's Hospital, Massachusetts General Hospital, Boston, MA, USA
| | - Martin van Boxtel
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience (MHeNS), Maastricht University, Maastricht, The Netherlands
| | - Monique Breteler
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Mathieu Ceccaldi
- Institut des Neurosciences des Systèmes, Université de Marseille, Marseille, France
| | - Gaël Chételat
- INSERM, U1077, Caen, France; Université de Caen Basse-Normandie, UMR-S1077, Caen, France; Ecole Pratique des Hautes Etudes, UMR-S1077, Caen, France; CHU de Caen, U1077, Caen, France
| | | | - Carole Dufouil
- INSERM U708, Neuroepidemiology, CIC-EC7 and Bordeaux University, Bordeaux, France
| | - Kathryn A Ellis
- Academic Unit for Psychiatry of Old Age, Department of Psychiatry, University of Melbourne, Melbourne, Australia
| | - Wiesje M van der Flier
- Alzheimer Center, Department of Neurology, Neuroscience Campus Amsterdam, VU University Medical Centre, Amsterdam, The Netherlands
| | - Lidia Glodzik
- Department of Psychiatry, New York University Langone Medical Center, New York, NY, USA
| | - Argonde C van Harten
- Alzheimer Center, Department of Neurology, Neuroscience Campus Amsterdam, VU University Medical Centre, Amsterdam, The Netherlands
| | - Mony J de Leon
- Department of Psychiatry, New York University Langone Medical Center, New York, NY, USA
| | - Pauline McHugh
- Department of Psychiatry, New York University Langone Medical Center, New York, NY, USA
| | - Michelle M Mielke
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA
| | - Jose Luis Molinuevo
- Alzheimer's Disease and Other Cognitive Disorders Unit, IDIBAPS, Hospital Clinic, Barcelona, Spain
| | - Lisa Mosconi
- Department of Psychiatry, New York University Langone Medical Center, New York, NY, USA
| | - Ricardo S Osorio
- Department of Psychiatry, New York University Langone Medical Center, New York, NY, USA
| | - Audrey Perrotin
- INSERM, U1077, Caen, France; Université de Caen Basse-Normandie, UMR-S1077, Caen, France; Ecole Pratique des Hautes Etudes, UMR-S1077, Caen, France; CHU de Caen, U1077, Caen, France
| | | | - Laura A Rabin
- Brooklyn College of The City University of New York, New York, NY, USA; The Graduate Center of The City University of New York, New York, NY, USA
| | - Lorena Rami
- Alzheimer's Disease and Other Cognitive Disorders Unit, IDIBAPS, Hospital Clinic, Barcelona, Spain
| | - Barry Reisberg
- Department of Psychiatry, New York University Langone Medical Center, New York, NY, USA; Silberstein Aging and Dementia Research Center, New York University School of Medicine, New York, NY, USA
| | - Dorene M Rentz
- Department of Neurology, Harvard Medical School, Brigham and Women's Hospital, Massachusetts General Hospital, Boston, MA, USA
| | - Perminder S Sachdev
- Centre for Healthy Brain Ageing, University of New South Wales, Sydney, Australia
| | - Vincent de la Sayette
- INSERM, U1077, Caen, France; Université de Caen Basse-Normandie, UMR-S1077, Caen, France; Ecole Pratique des Hautes Etudes, UMR-S1077, Caen, France; CHU de Caen, U1077, Caen, France
| | - Andrew J Saykin
- Department of Radiology and Imaging Sciences, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Philip Scheltens
- Alzheimer Center, Department of Neurology, Neuroscience Campus Amsterdam, VU University Medical Centre, Amsterdam, The Netherlands
| | - Melanie B Shulman
- Department of Psychiatry, New York University Langone Medical Center, New York, NY, USA
| | - Melissa J Slavin
- Dementia Collaborative Research Centre, School of Psychiatry, UNSW Medicine, University of New South Wales, Sydney, Australia
| | - Reisa A Sperling
- Department of Neurology, Harvard Medical School, Brigham and Women's Hospital, Massachusetts General Hospital, Boston, MA, USA
| | - Robert Stewart
- Institute of Psychiatry, King's College London, London, UK
| | - Olga Uspenskaya
- Alzheimer's Institute, Groupe Hospitalier Pitié-Salpêtrière, Paris, France
| | - Bruno Vellas
- Department of Internal Medicine and Geriatrics, Toulouse University Hospital, UMR INSERM 1027, University Paul Sabatier, Toulouse, France
| | - Pieter Jelle Visser
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience (MHeNS), Maastricht University, Maastricht, The Netherlands; Alzheimer Center, Department of Neurology, Neuroscience Campus Amsterdam, VU University Medical Centre, Amsterdam, The Netherlands
| | - Michael Wagner
- Department of Psychiatry, University of Bonn, Bonn, Germany; Clinical Treatment and Research Center for Neurodegenerative Disease (KBFZ), University of Bonn, Bonn, Germany; German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
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Nose M, Kodama C, Ikejima C, Mizukami K, Matsuzaki A, Tanaka S, Yoshimura A, Yasuno F, Asada T. ApoE4 is not associated with depression when mild cognitive impairment is considered. Int J Geriatr Psychiatry 2013; 28:155-63. [PMID: 22700491 DOI: 10.1002/gps.3803] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Accepted: 02/28/2012] [Indexed: 11/06/2022]
Abstract
OBJECTIVE The aim of the study was to examine the relationship between apolipoprotein E4 allele (ApoE4) and depression among an older Japanese population. Mild cognitive impairment (MCI) was taken into consideration. METHODS This is a community-based cross-sectional study. We assessed the mood and cognitive function of Japanese community-dwelling individuals aged 65 years or older. In the first phase of the study, we evaluated the mood and cognitive function. In the second phase, face-to-face structured interviews were conducted. Individuals with dementia and other mental diseases were excluded on the basis of a consensus meeting of psychiatrists and neuropsychologists; 738 subjects with full data were included in the analyses. We subdivided depression into major depressive episode (MDE) and depressive symptoms cases (DSCs). DSC was defined as a score of 6 or more on the Geriatric Depression Scale but not having a diagnosis of MDE. The relationship between depression (MDE and DSC) and ApoE4 was examined by multivariate logistic regression. RESULTS The adjusted odds ratio (OR) of ApoE4 on DSC was not significant (OR = 0.82, 95%CI = 0.48-1.39, p < 0.46). Sex (OR = 2.53, 95%CI = 1.33-4.79, p < 0.01), MCI (1.95, 1.21-3.14, p < 0.01), years of education (0.87, 0.79-0.95, p < 0.01), and Nishimura's activities of daily living scores (0.75, 0.63-0.89, p < 0.01) significantly correlated with prevalence of DSC. There were no significant risk factors for MDE. CONCLUSION Apolipoprotein E4 allele contributed to neither DSC nor MDE. The association of MCI with ApoE4 and DSC suggested that MCI is a confounder for the association between ApoE4 and DSC.
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Affiliation(s)
- Mayumi Nose
- Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba City, Japan
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Djalalov S, Yong J, Beca J, Black S, Saposnik G, Musa Z, Siminovitch K, Moretti M, Hoch JS. Genetic Testing in Combination with Preventive Donepezil Treatment for Patients with Amnestic Mild Cognitive Impairment. Mol Diagn Ther 2012. [DOI: 10.1007/s40291-012-0010-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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20
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Are subjective cognitive complaints relevant in preclinical Alzheimer's disease? A review and guidelines for healthcare professionals. ACTA ACUST UNITED AC 2012. [DOI: 10.1017/s0959259812000172] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
SummaryIdentifying what makes people vulnerable to developing Alzheimer's disease (AD) is at the forefront of many research programmes, while early diagnosis is the goal in clinical practice. What individuals themselves tell their general practitioners (GPs) is clearly important because these subjective complaints may be a clue that something is wrong. More specifically, subjective cognitive complaints (SCC) may be the first sign of AD in individuals whose cognitive performance on standard neuropsychological tasks is normal for their age. The challenge for researchers in this field is twofold: (a) determining when SCC do or do not predict current cognitive functioning and future dementia; and (b) estimating how relevant they are for patients and their proxies. The current article addresses these issues, while guidelines are also provided in an attempt to help clinicians interpret and make treatment decisions about their patients’ SCC.
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21
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Norberg J, Graff C, Almkvist O, Ewers M, Frisoni GB, Frölich L, Hampel H, Jones RW, Kehoe PG, Lenoir H, Minthon L, Nobili F, Olde Rikkert M, Rigaud AS, Scheltens P, Soininen H, Spiru L, Tsolaki M, Wahlund LO, Vellas B, Wilcock G, Elias-Sonnenschein LS, Verhey FRJ, Visser PJ. Regional differences in effects of APOE ε4 on cognitive impairment in non-demented subjects. Dement Geriatr Cogn Disord 2012; 32:135-42. [PMID: 21952537 DOI: 10.1159/000330492] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/30/2011] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND The APOE ε4 allele is a risk factor for Alzheimer's disease (AD). APOE ε4 is common in non-demented subjects with cognitive impairment. In both healthy people and people with AD, its prevalence has a north-south gradient across Europe. In the present study, we investigated whether the relation between the APOE ε4 allele and cognitive impairment varied across Northern, Middle and Southern Europe. We also investigated whether a north-south gradient existed in subjects with subjective cognitive impairment (SCI), amnestic mild cognitive impairment (MCI) and non-amnestic MCI. METHODS Data from 16 centers across Europe were analyzed. RESULTS A north-south gradient in APOE ε4 prevalence existed in the total sample (62.7% for APOE ε4 carriers in the northern region, 42.1% in the middle region, and 31.5% in the southern region) and in subjects with SCI and amnestic MCI separately. Only in Middle Europe was the APOE ε4 allele significantly associated with poor performance on tests of delayed recall and learning, as well as with the amnestic subtype of MCI. CONCLUSION The APOE ε4 allele frequencies in subjects with SCI and amnestic MCI have a north-south gradient. The relation between the APOE ε4 allele and cognition is region dependent.
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Affiliation(s)
- J Norberg
- Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden
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22
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Tate DF, Neeley ES, Norton MC, Tschanz JT, Miller MJ, Wolfson L, Hulette C, Leslie C, Welsh-Bohmer KA, Plassman B, Bigler ED. Intracranial volume and dementia: some evidence in support of the cerebral reserve hypothesis. Brain Res 2010; 1385:151-62. [PMID: 21172323 DOI: 10.1016/j.brainres.2010.12.038] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2010] [Revised: 12/02/2010] [Accepted: 12/11/2010] [Indexed: 10/18/2022]
Abstract
The brain reserve hypothesis has been posited as being one important mediating factor for developing dementia, especially Alzheimer's disease (AD). Evidence for this hypothesis is mixed though different methodologies have made these findings difficult to interpret. We examined imaging data from a large cohort (N=194) of mixed dementia patients and controls, 65years old and older from the Cache County, Utah Study of Memory and Aging for evidence of the brain reserve hypothesis using total intracranial volume (TICV) as a quantitative measure of pre-morbid brain size and a vicarious indicator of reserve. A broader spectrum of non-demented elderly control subjects from previous studies was also included for comparison (N=423). In addition, non-parametric Classification and Regression Tree (CART) analyses were performed to model group heterogeneity and identify any subgroups of patients where TICV might be an important predictor of dementia. Parametrically, no main effect was found for TICV when predicting a dementia diagnosis; however, the CART analysis did reveal important TICV subgroups, including a sex differential wherein ε4 APOE allele presence in males and low TICV predicted AD classification. TICV, APOE, and other potential mediator/moderator variables are discussed in the context of the brain reserve hypothesis.
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Affiliation(s)
- D F Tate
- Center for Neurological Imaging, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
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Gallassi R, Oppi F, Poda R, Scortichini S, Stanzani Maserati M, Marano G, Sambati L. Are subjective cognitive complaints a risk factor for dementia? Neurol Sci 2010; 31:327-36. [DOI: 10.1007/s10072-010-0224-6] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2009] [Accepted: 01/13/2010] [Indexed: 12/21/2022]
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Reitz C, Mayeux R. Use of genetic variation as biomarkers for mild cognitive impairment and progression of mild cognitive impairment to dementia. J Alzheimers Dis 2010; 19:229-51. [PMID: 20061642 PMCID: PMC2908485 DOI: 10.3233/jad-2010-1255] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Cognitive impairment is prevalent in the elderly. The high estimates of conversion to dementia have spurred the interest in identification of genetic risk factors associated with development of cognitive impairment and or its progression. However, despite notable achievements in human genetics over the years, in particular technological advances in gene mapping and in statistical methods that relate genetic variants to disease, to date only a small proportion of the genetic contribution to late-life cognitive impairment can be explained. A likely explanation for the difficulty in gene identification is that it is a multifactorial disorder with both genetic and environmental components, in which several genes with small effects each are likely to contribute to the quantitative traits associated with the disease. The motivation for identifying the underlying genetic risk factors elderly is clear. Not only could it shed light on disease pathogenesis, but it may also provide potential targets for effective treatment, screening, and prevention. In this article we review the current knowledge on underlying genetic variants and the usefulness of genetic variation as diagnostic tools and biomarkers. In addition, we discuss the potentials and difficulties researchers face in designing appropriate studies for gene discovery.
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Affiliation(s)
- Christiane Reitz
- Taub Institute for Research on Alzheimer’s Disease and the Aging Brain, College of Physicians and Surgeons, Columbia University, New York, NY
- Department of Neurology, College of Physicians and Surgeons, Columbia University, New York, NY
- Gertrude H. Sergievsky Center, College of Physicians and Surgeons, Columbia University, New York, NY
| | - Richard Mayeux
- Taub Institute for Research on Alzheimer’s Disease and the Aging Brain, College of Physicians and Surgeons, Columbia University, New York, NY
- Department of Neurology, College of Physicians and Surgeons, Columbia University, New York, NY
- Gertrude H. Sergievsky Center, College of Physicians and Surgeons, Columbia University, New York, NY
- Department of Epidemiology, Joseph P. Mailman School of Public Health, Columbia University, New York, NY
- Department of Psychiatry, College of Physicians and Surgeons, Columbia University, New York, NY
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Graves JL. Biological V. Social Definitions of Race: Implications for Modern Biomedical Research. ACTA ACUST UNITED AC 2010. [DOI: 10.1007/s12114-009-9053-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Misconceptions concerning the concordance of biological and social definitions of race are ongoing in American society. This problem extends beyond that of the lay public into the professional arena, especially that of biomedical research. This continues, in part, because of the lack of training of many biomedical practitioners in evolutionary thinking. This essay reviews the biological and social definitions of race, examining how understanding the evolutionary mechanisms of disease is crucial to addressing ongoing health disparities. Finally it concludes by laying bear the fallacies of “race-specific” medicine.
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Affiliation(s)
- Joseph L. Graves
- Division of University Studies, North Carolina A&T State University, 1601 E. Market St., Greensboro, NC 27411, USA
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Galluzzi S, Testa C, Boccardi M, Bresciani L, Benussi L, Ghidoni R, Beltramello A, Bonetti M, Bono G, Falini A, Magnani G, Minonzio G, Piovan E, Binetti G, Frisoni GB. The Italian Brain Normative Archive of structural MR scans: norms for medial temporal atrophy and white matter lesions. Aging Clin Exp Res 2009; 21:266-76. [PMID: 19959914 DOI: 10.1007/bf03324915] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND AIMS To describe the clinical and neuropsychological features of a large group of cognitively intact persons subjected to brain high-resolution magnetic resonance (MR), to compare them with the general population, and to set norms for medial temporal atrophy and white matter lesions. METHODS Participants in the Italian Brain Normative Archive (IBNA) study were 483 consecutive volunteers undergoing MR for reasons unrelated to cognition (migraine or headache, visual and balance or auditory disturbances, paresthesias, and others) and showing no brain damage. Manual tracing of hippocampal and amygdalar volumes and visual rating of white matter lesions were made. The whole study group was stratified by age (</=60 and 60+ yrs) and by the reason for MR prescription. RESULTS In the whole group, mean age and education were 52.4+/-13.7 and 9.8+/-4.2 years, respectively, and the prevalence of women was 63%. Clinical, neuropsychological and morphometric features were similar in the stratified subgroups. Neuropsychological features were those expected for age and education based on Italian normative values. Hippocampal and amygdalar volumes were not associated with age, except for the right amygdala (B -0.159, 95% CI -0.28 to -0.03, p=0.016). CONCLUSIONS Persons in the IBNA study had clinical and neuropsychological features consistent with that of the general population. Their brain morphometric features may be used as normative references for patients with suspected neurodegenerative disorders.
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Affiliation(s)
- Samantha Galluzzi
- LENITEM - Laboratory of Epidemiology, Neuroimaging and Telemedicine, IRCCS Centro San Giovanni di Dio Fatebenefratelli, via Pilastroni 4, 25125 Brescia, Italy
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Characteristics and diagnostic profile of patients seeking dementia care in a memory clinic in Hong Kong. Int Psychogeriatr 2009; 21:392-400. [PMID: 19102800 DOI: 10.1017/s104161020800817x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND Seeking medical advice for dementia involves an understanding of norms, values and attitudes towards care-giving and inter-dependency, which are culturally bounded. We hypothesize that local culture and socioeconomic structure affect our Chinese patients who present with forgetfulness to our memory clinic. METHODS A retrospective case notes review was undertaken on 454 consecutive patients referred to the memory clinic at Princess Margaret Hospital, Hong Kong. RESULTS 385 patients were diagnosed with dementia and 27 had mild cognitive impairment. Reversible dementia was identified in 24 patients and normal cognition in 18. In patients with dementia, 55.8% had Alzheimer's disease, 26.2% had vascular dementia, 6.0% had other irreversible dementia, 5.2% had dementia with Lewy bodies, 4.9% had undetermined dementia and 1.8% had frontotemporal dementia. The median duration from symptom onset to medical consultation was two years; 66.5% had advanced disease with initial Mini-mental State Examination scores < or = 17. On their first visit, 85% of patients were living in the community; after two years this proportion had fallen to 63%. CONCLUSIONS Dementia patients in Hong Kong apparently enjoy a long subclinical period and only seek medical attention at late stages. Local Chinese culture and socioeconomic backgrounds could be the main reasons that underlie these observations.
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