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Ouellette J, Lacoste B. From Neurodevelopmental to Neurodegenerative Disorders: The Vascular Continuum. Front Aging Neurosci 2021; 13:749026. [PMID: 34744690 PMCID: PMC8570842 DOI: 10.3389/fnagi.2021.749026] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 09/13/2021] [Indexed: 12/12/2022] Open
Abstract
Structural and functional integrity of the cerebral vasculature ensures proper brain development and function, as well as healthy aging. The inability of the brain to store energy makes it exceptionally dependent on an adequate supply of oxygen and nutrients from the blood stream for matching colossal demands of neural and glial cells. Key vascular features including a dense vasculature, a tightly controlled environment, and the regulation of cerebral blood flow (CBF) all take part in brain health throughout life. As such, healthy brain development and aging are both ensured by the anatomical and functional interaction between the vascular and nervous systems that are established during brain development and maintained throughout the lifespan. During critical periods of brain development, vascular networks remodel until they can actively respond to increases in neural activity through neurovascular coupling, which makes the brain particularly vulnerable to neurovascular alterations. The brain vasculature has been strongly associated with the onset and/or progression of conditions associated with aging, and more recently with neurodevelopmental disorders. Our understanding of cerebrovascular contributions to neurological disorders is rapidly evolving, and increasing evidence shows that deficits in angiogenesis, CBF and the blood-brain barrier (BBB) are causally linked to cognitive impairment. Moreover, it is of utmost curiosity that although neurodevelopmental and neurodegenerative disorders express different clinical features at different stages of life, they share similar vascular abnormalities. In this review, we present an overview of vascular dysfunctions associated with neurodevelopmental (autism spectrum disorders, schizophrenia, Down Syndrome) and neurodegenerative (multiple sclerosis, Huntington's, Parkinson's, and Alzheimer's diseases) disorders, with a focus on impairments in angiogenesis, CBF and the BBB. Finally, we discuss the impact of early vascular impairments on the expression of neurodegenerative diseases.
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Affiliation(s)
- Julie Ouellette
- Ottawa Hospital Research Institute, Neuroscience Program, Ottawa, ON, Canada
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Baptiste Lacoste
- Ottawa Hospital Research Institute, Neuroscience Program, Ottawa, ON, Canada
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
- University of Ottawa Brain and Mind Research Institute, Ottawa, ON, Canada
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The Relationship of Race, Psychosocial Stress and Resiliency Indicators to Neurocognitive Impairment among Older Americans Enrolled in the Health and Retirement Survey: A Cross-Sectional Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18031358. [PMID: 33540911 PMCID: PMC7908633 DOI: 10.3390/ijerph18031358] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 01/28/2021] [Accepted: 01/29/2021] [Indexed: 11/16/2022]
Abstract
Background: Race/ethnicity, toxic stress (TS), resilience-promoting factors (RPFs), and their interactions were investigated in relationship to neurocognitive impairment (NI) in a nationally representative sample of adult Americans ≥50 years enrolled in the Health and Retirement Study (HRS) between 2012 and 2014. Methods: NI was defined as physician diagnosis of Alzheimer’s disease/dementia or HRS total cognition score ≤ 10. Race/ethnicity (i.e., African American, White, or Other), TS (i.e., everyday discrimination and chronic stressors), and mastery (as indicator of RPF) were self-reported. Multivariable logistic regression models estimated race-, TS-, RPF-associated odds ratios (ORs), and 95% confidence intervals (CI) for NI adjusting for socio-demographic confounders. Results: 6317 respondents interviewed between the years 2012 and 2014, age range 55–104 years old, 83% White, 13% Black and 4% Other race were included in the study. Chronic stress (OR = 1.88, 95% CI: 1.42–2.48), discrimination (OR = 3.31, 95% CI: 2.12–5.19) and low mastery (OR = 1.85, 95% CI: 1.38–2.48) were each associated with higher NI risk while low mastery was associated with higher NI risk in discrimination and race/ethnicity dependent manner. Specifically, low mastery-associated risk for NI was evident among adults that denied experiencing discrimination (OR = 2.01, 95% CI: 1.51–2.68), but absent among those that experienced discrimination (OR = 0.72, 95% CI: 0.32–1.62). Further, AA race was associated with NI risk but only among adults with high mastery (OR = 2.00, 95% CI: 1.20–3.35). Conclusions: Discrimination, chronic stress, and low mastery were associated with worse cognition. Persisting cognitive disadvantage for AA vs. White/Other race only among high mastery adults suggests that adverse social experiences may counteract mastery-associated cognitive benefits among AA population. TS reduction through policies that promote equal treatment by race/ethnicity in social life, health, justice, and economic systems may promote successful cognitive aging.
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Kiernan EA, Ewald AC, Ouellette JN, Wang T, Agbeh A, Knutson AO, Roopra AS, Watters JJ. Prior Hypoxia Exposure Enhances Murine Microglial Inflammatory Gene Expression in vitro Without Concomitant H3K4me3 Enrichment. Front Cell Neurosci 2020; 14:535549. [PMID: 33132843 PMCID: PMC7575929 DOI: 10.3389/fncel.2020.535549] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Accepted: 09/09/2020] [Indexed: 12/19/2022] Open
Abstract
Hypoxia (Hx) is a component of multiple disorders, including stroke and sleep-disordered breathing, which often precede or are comorbid with neurodegenerative diseases. However, little is known about how hypoxia affects the ability of microglia, resident CNS macrophages, to respond to subsequent inflammatory challenges that are often present during neurodegenerative processes. We, therefore, tested the hypothesis that hypoxia would enhance or "prime" microglial pro-inflammatory gene expression in response to a later inflammatory challenge without programmatically increasing basal levels of pro-inflammatory cytokine expression. To test this, we pre-exposed immortalized N9 and primary microglia to hypoxia (1% O2) for 16 h and then challenged them with pro-inflammatory lipopolysaccharide (LPS) either immediately or 3-6 days following hypoxic exposure. We used RNA sequencing coupled with chromatin immunoprecipitation sequencing to analyze primed microglial inflammatory gene expression and modifications to histone H3 lysine 4 trimethylation (H3K4me3) at the promoters of primed genes. We found that microglia exhibited enhanced responses to LPS 3 days and 6 days post-hypoxia. Surprisingly, however, the majority of primed genes were not enriched for H3K4me3 acutely following hypoxia exposure. Using the bioinformatics tool MAGICTRICKS and reversible pharmacological inhibition, we found that primed genes required the transcriptional activities of NF-κB. These findings provide evidence that hypoxia pre-exposure could lead to persistent and aberrant inflammatory responses in the context of CNS disorders.
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Affiliation(s)
- Elizabeth A. Kiernan
- Department of Neuroscience Training Program, University of Wisconsin-Madison, Madison, WI, United States
- Department of Comparative Biosciences, University of Wisconsin-Madison, Madison, WI, United States
| | - Andrea C. Ewald
- Department of Comparative Biosciences, University of Wisconsin-Madison, Madison, WI, United States
| | - Jonathan N. Ouellette
- Department of Comparative Biosciences, University of Wisconsin-Madison, Madison, WI, United States
| | - Tao Wang
- Department of Comparative Biosciences, University of Wisconsin-Madison, Madison, WI, United States
| | - Abiye Agbeh
- Department of Comparative Biosciences, University of Wisconsin-Madison, Madison, WI, United States
| | - Andrew O. Knutson
- Department of Comparative Biosciences, University of Wisconsin-Madison, Madison, WI, United States
- Molecular and Environmental Toxicology Training Program, University of Wisconsin-Madison, Madison, WI, United States
| | - Avtar S. Roopra
- Department of Neuroscience Training Program, University of Wisconsin-Madison, Madison, WI, United States
- Department of Neuroscience, University of Wisconsin-Madison, Madison, WI, United States
| | - Jyoti J. Watters
- Department of Neuroscience Training Program, University of Wisconsin-Madison, Madison, WI, United States
- Department of Comparative Biosciences, University of Wisconsin-Madison, Madison, WI, United States
- Molecular and Environmental Toxicology Training Program, University of Wisconsin-Madison, Madison, WI, United States
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4
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Freitas-Andrade M, Raman-Nair J, Lacoste B. Structural and Functional Remodeling of the Brain Vasculature Following Stroke. Front Physiol 2020; 11:948. [PMID: 32848875 PMCID: PMC7433746 DOI: 10.3389/fphys.2020.00948] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 07/14/2020] [Indexed: 12/12/2022] Open
Abstract
Maintenance of cerebral blood vessel integrity and regulation of cerebral blood flow ensure proper brain function. The adult human brain represents only a small portion of the body mass, yet about a quarter of the cardiac output is dedicated to energy consumption by brain cells at rest. Due to a low capacity to store energy, brain health is heavily reliant on a steady supply of oxygen and nutrients from the bloodstream, and is thus particularly vulnerable to stroke. Stroke is a leading cause of disability and mortality worldwide. By transiently or permanently limiting tissue perfusion, stroke alters vascular integrity and function, compromising brain homeostasis and leading to widespread consequences from early-onset motor deficits to long-term cognitive decline. While numerous lines of investigation have been undertaken to develop new pharmacological therapies for stroke, only few advances have been made and most clinical trials have failed. Overall, our understanding of the acute and chronic vascular responses to stroke is insufficient, yet a better comprehension of cerebrovascular remodeling following stroke is an essential prerequisite for developing novel therapeutic options. In this review, we present a comprehensive update on post-stroke cerebrovascular remodeling, an important and growing field in neuroscience, by discussing cellular and molecular mechanisms involved, sex differences, limitations of preclinical research design and future directions.
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Affiliation(s)
| | - Joanna Raman-Nair
- Neuroscience Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Baptiste Lacoste
- Neuroscience Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
- Brain and Mind Research Institute, University of Ottawa, Ottawa, ON, Canada
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Rosenich E, Hordacre B, Paquet C, Koblar SA, Hillier SL. Cognitive Reserve as an Emerging Concept in Stroke Recovery. Neurorehabil Neural Repair 2020; 34:187-199. [PMID: 32089097 DOI: 10.1177/1545968320907071] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Stroke is a leading cause of death and disability. It is a complex and largely heterogeneous condition. Prognosis for variations in impairment and recovery following stroke continues to be challenging and inaccurate, highlighting the need to examine the influence of other currently unknown variables to better predict and understand interindividual differences in stroke impairment and recovery. The concept of "cognitive reserve," a feature of brain function said to moderate the relationship between brain pathology and clinical outcomes, might provide a partial explanation. This review discusses the potential significance of cognitive reserve in the context of stroke, with reference to reduced burden of disability poststroke, health promotion, intervention and secondary prevention of cognitive impairment, ease and challenges of translation into clinical practice, prognosis and prediction of recovery, and clinical decisions and trial stratification. Discussions from the review aim to encourage stroke clinicians and researchers to better consider the role of premorbid, lifestyle-related variables, such as cognitive reserve, in facilitating successful neurological outcomes and recovery following stroke.
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Affiliation(s)
- Emily Rosenich
- University of South Australia, Adelaide, South Australia, Australia
| | - Brenton Hordacre
- University of South Australia, Adelaide, South Australia, Australia
| | - Catherine Paquet
- University of South Australia, Adelaide, South Australia, Australia
| | - Simon A Koblar
- University of Adelaide, Adelaide, South Australia, Australia
| | - Susan L Hillier
- University of South Australia, Adelaide, South Australia, Australia
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Amoretti S, Cabrera B, Torrent C, Mezquida G, Lobo A, González-Pinto A, Parellada M, Corripio I, Vieta E, de la Serna E, Butjosa A, Contreras F, Sarró S, Penadés R, Sánchez-Torres AM, Cuesta M, Bernardo M. Cognitive reserve as an outcome predictor: first-episode affective versus non-affective psychosis. Acta Psychiatr Scand 2018; 138:441-455. [PMID: 30105820 DOI: 10.1111/acps.12949] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/25/2018] [Indexed: 02/06/2023]
Abstract
OBJECTIVE Cognitive reserve (CR) refers to the brain's capacity to cope with pathology in order to minimize the symptoms. CR is associated with different outcomes in severe mental illness. This study aimed to analyze the impact of CR according to the diagnosis of first-episode affective or non-affective psychosis (FEP). METHOD A total of 247 FEP patients (211 non-affective and 36 affective) and 205 healthy controls were enrolled. To assess CR, common proxies have been integrated (premorbid IQ; education-occupation; leisure activities). The groups were divided into high and low CR. RESULTS In non-affective patients, those with high CR were older, had higher socioeconomic status (SES), shorter duration of untreated psychosis, and a later age of onset. They also showed greater performance in most cognitive domains. In affective patients, those with a greater CR showed a higher SES, better functioning, and greater verbal memory performance. CONCLUSION CR plays a differential role in the outcome of psychoses according to the diagnosis. Specifically, in order to address the needs of non-affective patients with low CR, cognitive rehabilitation treatments will need to be 'enriched' by adding pro-cognitive pharmacological agents or using more sophisticated approaches. However, a functional remediation therapy may be of choice for those with an affective psychosis and low CR.
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Affiliation(s)
- S Amoretti
- Barcelona Clinic Schizophrenia Unit, Hospital Clinic of Barcelona, Neuroscience Institute, University of Barcelona, Barcelona, Spain.,Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Barcelona, Spain
| | - B Cabrera
- Barcelona Clinic Schizophrenia Unit, Hospital Clinic of Barcelona, Neuroscience Institute, University of Barcelona, Barcelona, Spain.,Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Barcelona, Spain
| | - C Torrent
- Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Barcelona, Spain.,August Pi I Sunyer Biomedical Research Institute (IDIBAPS), Barcelona, Spain.,Barcelona Bipolar Disorders Program, Institute of Neurosciences, University of Barcelona, Barcelona, Spain
| | - G Mezquida
- Barcelona Clinic Schizophrenia Unit, Hospital Clinic of Barcelona, Neuroscience Institute, University of Barcelona, Barcelona, Spain.,Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Barcelona, Spain
| | - A Lobo
- Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Barcelona, Spain.,Department of Medicine and Psychiatry, Zaragoza University, Instituto de Investigación Sanitaria Aragón (IIS Aragón), Zaragoza, Spain
| | - A González-Pinto
- Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Barcelona, Spain.,Araba University Hospital, Bioaraba Research Institute, Vitoria, Spain.,University of the Basque Country (UPV-EHU), Vitoria, Spain
| | - M Parellada
- Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Barcelona, Spain.,Child and Adolescent Psychiatry Department, Hospital General Universitario Gregorio Marañón, School of Medicine, Universidad Complutense, Madrid, Spain
| | - I Corripio
- Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Barcelona, Spain.,Department of Psychiatry, Institut d'Investigació Biomèdica-Sant Pau (IIB-SANT PAU), Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
| | - E Vieta
- Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Barcelona, Spain.,August Pi I Sunyer Biomedical Research Institute (IDIBAPS), Barcelona, Spain.,Barcelona Bipolar Disorders Program, Institute of Neurosciences, University of Barcelona, Barcelona, Spain
| | - E de la Serna
- Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Barcelona, Spain.,Department of Child and Adolescent Psychiatry and Psychology, Hospital Clinic of Barcelona, Barcelona, Spain
| | - A Butjosa
- Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Barcelona, Spain.,Parc Sanitari Sant Joan de Déu, Institut de Recerca Sant Joan de Déu, SantBoi de Llobregat, Barcelona, Spain.,Fundació Sant Joan de Déu, Institut de Recerca Sant Joan de Déu, Esplugues de Llobregat, Spain
| | - F Contreras
- Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Barcelona, Spain.,Psychiatry Department, Bellvitge University Hospital-IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain
| | - S Sarró
- Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Barcelona, Spain.,FIDMAG Germanes Hospitalàries Research Foundation, Barcelona, Spain.,Neuroscience Research Australia, Sydney, NSW, Australia.,School of Medical Sciences, University of New South Wales, Sydney, NSW, Australia.,ARC Centre of Excellence in Cognition and its Disorders, Sydney, NSW, Australia
| | - R Penadés
- Barcelona Clinic Schizophrenia Unit, Hospital Clinic of Barcelona, Neuroscience Institute, University of Barcelona, Barcelona, Spain.,Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Barcelona, Spain.,August Pi I Sunyer Biomedical Research Institute (IDIBAPS), Barcelona, Spain
| | - A M Sánchez-Torres
- Department of Psychiatry, Complejo Hospitalario de Navarra, Pamplona, Spain.,IdiSNA, Navarra Institute for Health Research, Pamplona, Spain
| | - M Cuesta
- Department of Psychiatry, Complejo Hospitalario de Navarra, Pamplona, Spain.,IdiSNA, Navarra Institute for Health Research, Pamplona, Spain
| | - M Bernardo
- Barcelona Clinic Schizophrenia Unit, Hospital Clinic of Barcelona, Neuroscience Institute, University of Barcelona, Barcelona, Spain.,Biomedical Research Networking Center for Mental Health Network (CIBERSAM), Barcelona, Spain.,August Pi I Sunyer Biomedical Research Institute (IDIBAPS), Barcelona, Spain
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Hale JM. Cognitive Disparities: The Impact of the Great Depression and Cumulative Inequality on Later-Life Cognitive Function. Demography 2018; 54:2125-2158. [PMID: 29164499 DOI: 10.1007/s13524-017-0629-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Population aging has driven a spate of recent research on later-life cognitive function. Greater longevity increases the lifetime risk of memory diseases that compromise the cognitive abilities vital to well-being. Alzheimer's disease, thought to be the most common underlying pathology for elders' cognitive dysfunction (Willis and Hakim 2013), is already the sixth leading cause of death in the United States (Alzheimer's Association 2016). Understanding social determinants of pathological cognitive decline is key to crafting interventions, but evidence is inconclusive for how social factors interact over the life course to affect cognitive function. I study whether early-life exposure to the Great Depression is directly associated with later-life cognitive function, influences risky behaviors over the life course, and/or accumulates with other life-course disadvantages. Using growth curve models to analyze the Health and Retirement Study, I find that early-life exposure to the Great Depression is associated with fluid cognition, controlling for intervening factors-evidence for a critical period model. I find little support for a social trajectory model. Disadvantage accumulates over the life course to predict worse cognitive function, providing strong evidence for a cumulative inequality model.
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Affiliation(s)
- Jo Mhairi Hale
- Max Planck Institute for Demographic Research, Konrad-Zuse-Str. 1, 18057, Rostock, Germany.
- Department of Sociology, University of California, Davis, CA, USA.
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Medaglia JD, Pasqualetti F, Hamilton RH, Thompson-Schill SL, Bassett DS. Brain and cognitive reserve: Translation via network control theory. Neurosci Biobehav Rev 2017; 75:53-64. [PMID: 28104411 PMCID: PMC5359115 DOI: 10.1016/j.neubiorev.2017.01.016] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 01/10/2017] [Accepted: 01/11/2017] [Indexed: 01/01/2023]
Abstract
Traditional approaches to understanding the brain's resilience to neuropathology have identified neurophysiological variables, often described as brain or cognitive "reserve," associated with better outcomes. However, mechanisms of function and resilience in large-scale brain networks remain poorly understood. Dynamic network theory may provide a basis for substantive advances in understanding functional resilience in the human brain. In this perspective, we describe recent theoretical approaches from network control theory as a framework for investigating network level mechanisms underlying cognitive function and the dynamics of neuroplasticity in the human brain. We describe the theoretical opportunities offered by the application of network control theory at the level of the human connectome to understand cognitive resilience and inform translational intervention.
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Affiliation(s)
- John Dominic Medaglia
- Department of Psychology, University of Pennsylvania, Philadelphia, PA 19104, United States
| | - Fabio Pasqualetti
- Department of Mechanical Engineering, University of California-Riverside, Riverside, CA 92521, United States
| | - Roy H Hamilton
- Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, United States
| | | | - Danielle S Bassett
- Department of Bioengineering, University of Pennsylvania, PA 19104, United States; Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA 19104, United States.
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Amoretti S, Bernardo M, Bonnin CM, Bioque M, Cabrera B, Mezquida G, Solé B, Vieta E, Torrent C. The impact of cognitive reserve in the outcome of first-episode psychoses: 2-year follow-up study. Eur Neuropsychopharmacol 2016; 26:1638-48. [PMID: 27511320 DOI: 10.1016/j.euroneuro.2016.07.003] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 06/20/2016] [Accepted: 07/02/2016] [Indexed: 12/17/2022]
Abstract
The concept of cognitive reserve (CR) suggests that the premorbid intelligence quotient (IQ), years of education and leisure activities provide more efficient cognitive networks and therefore allow a better management of some conditions associated to cognitive impairment. Fifty-two DSM-IV diagnosed FEP subjects were matched with 41 healthy controls by age, gender and parental socio-economic status. All subjects were assessed clinically, neuropsychologically and functionally at baseline and after a two-year follow-up. To assess CR at baseline, three proxies have been integrated: premorbid IQ, years of education-occupation and leisure activities. Higher CR was associated with better cognitive, functional and clinical outcomes at baseline. The CR proxy was able to predict working memory, attention, executive functioning, verbal memory and global composite cognitive score accounting for 48.9%, 19.1%, 16.9%, 10.8% and 14.9% respectively of the variance at two-year follow-up. CR was also significantly predictive of PANSS negative scale score (12.5%), FAST global score (13.4%) and GAF (13%) at two-year follow-up. In addition, CR behaved as a mediator of working memory (B=4.123) and executive function (B=3.298) at baseline and of working memory (B=5.034) at 2-year follow-up. An additional analysis was performed, in order to test whether this mediation could be attributed mainly to the premorbid IQ. We obtained that this measure was not enough by itself to explain this mediation. CR may contribute to neuropsychological and functional outcome. Specific programs addressed to improve cognition and functioning conducted at the early stages of the illness may be helpful in order to prevent cognitive and functional decline.
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Affiliation(s)
- S Amoretti
- Barcelona Clinic Schizophrenia Unit, Neuroscience Institute, Hospital Clinic of Barcelona, Spain
| | - M Bernardo
- Barcelona Clinic Schizophrenia Unit, Neuroscience Institute, Hospital Clinic of Barcelona, Spain; Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Barcelona, Spain; Institut d׳Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Universitat de Barcelona, Spain.
| | - C M Bonnin
- Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Barcelona, Spain; Institut d׳Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Universitat de Barcelona, Spain; Barcelona Bipolar Disorders Program, Institute of Neurosciences, Hospital Clinic, University of Barcelona, IDIBAPS, CIBERSAM, Barcelona, Catalonia, Spain
| | - M Bioque
- Barcelona Clinic Schizophrenia Unit, Neuroscience Institute, Hospital Clinic of Barcelona, Spain
| | - B Cabrera
- Barcelona Clinic Schizophrenia Unit, Neuroscience Institute, Hospital Clinic of Barcelona, Spain; Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Barcelona, Spain
| | - G Mezquida
- Barcelona Clinic Schizophrenia Unit, Neuroscience Institute, Hospital Clinic of Barcelona, Spain
| | - B Solé
- Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Barcelona, Spain; Institut d׳Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Universitat de Barcelona, Spain; Barcelona Bipolar Disorders Program, Institute of Neurosciences, Hospital Clinic, University of Barcelona, IDIBAPS, CIBERSAM, Barcelona, Catalonia, Spain
| | - E Vieta
- Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Barcelona, Spain; Institut d׳Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Universitat de Barcelona, Spain; Barcelona Bipolar Disorders Program, Institute of Neurosciences, Hospital Clinic, University of Barcelona, IDIBAPS, CIBERSAM, Barcelona, Catalonia, Spain
| | - C Torrent
- Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Barcelona, Spain; Institut d׳Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Universitat de Barcelona, Spain; Barcelona Bipolar Disorders Program, Institute of Neurosciences, Hospital Clinic, University of Barcelona, IDIBAPS, CIBERSAM, Barcelona, Catalonia, Spain
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10
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Zimmerer VC, Wibrow M, Varley RA. Formulaic Language in People with Probable Alzheimer’s Disease: A Frequency-Based Approach. J Alzheimers Dis 2016; 53:1145-60. [DOI: 10.3233/jad-160099] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Vitor C. Zimmerer
- Department of Language and Cognition, University College London, London, UK
| | - Mark Wibrow
- Department of Speech, Hearing and Phonetic Sciences, University College London, London, UK
| | - Rosemary A. Varley
- Department of Language and Cognition, University College London, London, UK
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11
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Grasset L, Brayne C, Joly P, Jacqmin-Gadda H, Peres K, Foubert-Samier A, Dartigues JF, Helmer C. Trends in dementia incidence: Evolution over a 10-year period in France. Alzheimers Dement 2015; 12:272-80. [DOI: 10.1016/j.jalz.2015.11.001] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 10/20/2015] [Accepted: 11/04/2015] [Indexed: 01/04/2023]
Affiliation(s)
- Leslie Grasset
- INSERM, ISPED; Centre INSERM U1219 - Bordeaux Population Health Research Center; Bordeaux France
- University of Bordeaux; Bordeaux France
| | - Carol Brayne
- Department of Public Health and Primary Care; Cambridge Institute of Public Health; Cambridge UK
| | - Pierre Joly
- INSERM, ISPED; Centre INSERM U1219 - Bordeaux Population Health Research Center; Bordeaux France
- University of Bordeaux; Bordeaux France
| | - Hélène Jacqmin-Gadda
- INSERM, ISPED; Centre INSERM U1219 - Bordeaux Population Health Research Center; Bordeaux France
- University of Bordeaux; Bordeaux France
| | - Karine Peres
- INSERM, ISPED; Centre INSERM U1219 - Bordeaux Population Health Research Center; Bordeaux France
- University of Bordeaux; Bordeaux France
| | - Alexandra Foubert-Samier
- INSERM, ISPED; Centre INSERM U1219 - Bordeaux Population Health Research Center; Bordeaux France
- University of Bordeaux; Bordeaux France
- University Hospital; Memory Consultation, CMRR; Bordeaux France
| | - Jean-François Dartigues
- INSERM, ISPED; Centre INSERM U1219 - Bordeaux Population Health Research Center; Bordeaux France
- University of Bordeaux; Bordeaux France
- University Hospital; Memory Consultation, CMRR; Bordeaux France
| | - Catherine Helmer
- INSERM, ISPED; Centre INSERM U1219 - Bordeaux Population Health Research Center; Bordeaux France
- University of Bordeaux; Bordeaux France
- INSERM; Clinical Investigation Center-Clinical Epidemiology 1401; Bordeaux France
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Arauz A, Rodríguez-Agudelo Y, Sosa AL, Chávez M, Paz F, González M, Coral J, Díaz-Olavarrieta C, Román GC. Vascular Cognitive Disorders and Depression After First-Ever Stroke: The Fogarty-Mexico Stroke Cohort. Cerebrovasc Dis 2014; 38:284-9. [DOI: 10.1159/000366471] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Accepted: 08/05/2014] [Indexed: 11/19/2022] Open
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Román GC, Boller F. Vascular factors in neurodegenerative diseases: a path towards treatment and prevention. FUNCTIONAL NEUROLOGY 2014; 29:85-86. [PMID: 25306117 PMCID: PMC4198164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
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Miller LS, Colella B, Mikulis D, Maller J, Green REA. Environmental enrichment may protect against hippocampal atrophy in the chronic stages of traumatic brain injury. Front Hum Neurosci 2013; 7:506. [PMID: 24093011 PMCID: PMC3782701 DOI: 10.3389/fnhum.2013.00506] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2012] [Accepted: 08/07/2013] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE To examine the relationship between environmental enrichment (EE) and hippocampal atrophy in the chronic stages of moderate to severe traumatic brain injury (TBI). DESIGN Retrospective analysis of prospectively collected data; observational, within-subjects. PARTICIPANTS Patients (N = 25) with moderate to severe TBI. MEASURES Primary predictors: (1) An aggregate of self-report rating of EE (comprising hours of cognitive, physical, and social activities) at 5 months post-injury; (2) pre-injury years of education as a proxy for pre-morbid EE (or cognitive reserve). PRIMARY OUTCOME bilateral hippocampal volume change from 5 to 28 months post-injury. RESULTS As predicted, self-reported EE was significantly negatively correlated with bilateral hippocampal atrophy (p < 0.05), with greater EE associated with less atrophy from 5 to 28 months. Contrary to prediction, years of education (a proxy for cognitive reserve) was not significantly associated with atrophy. CONCLUSION Post-injury EE may serve as a buffer against hippocampal atrophy in the chronic stages of moderate-severe TBI. Clinical application of EE should be considered for optimal maintenance of neurological functioning in the chronic stages of moderate-severe TBI.
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Affiliation(s)
- Lesley S Miller
- Applied Psychology and Human Development, Ontario Institute for Studies in Education, University of Toronto Toronto, ON, Canada
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