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Kim JW, Stewart R, Kang HJ, Bae KY, Kim SW, Shin IS, Yoon JS, Kim JM. Longitudinal Associations Between Serum Cytokine Levels and Dementia. Front Psychiatry 2018; 9:606. [PMID: 30510525 PMCID: PMC6252389 DOI: 10.3389/fpsyt.2018.00606] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 10/30/2018] [Indexed: 12/25/2022] Open
Abstract
Background: The purpose of this study was to investigate whether long-term inflammation is related to the incidence of dementia in a prospective observational study. Methods: In total, 732 Korean community-dwelling elderly people >65 years were evaluated at baseline. Of the 625 without dementia, 518 (83%) were followed over a 2.4-years period, and the incidence of dementia was determined. Cytokine [interleukin (IL)-1α, IL-1β, IL-6, IL-8, and tumor necrosis factor (TNF)-α] levels were measured at baseline and follow-up. The individual and combined effects of cytokine levels on dementia were evaluated after adjusting for potential covariates (lifestyle factors, demographics, disability, cognitive function, and presence of the APOE e4 allele) and a Bonferroni correction. Results: Incident dementia was associated with increased serum cytokine levels after 2 years; the association remained significant for TNF-α, IL1-α, and IL-1β concentrations even after applying a Bonferroni correction. The analysis of the combined effects of the five cytokines showed independent associations between increases in the summed number of higher cytokine levels, between baseline and follow-up. However, incident dementia was not expected based on higher baseline pro-inflammatory cytokine levels. Conclusion: Our results suggest that dementia may precede changes in serum cytokine levels and inflammatory processes, rather than resulting from elevated pro-inflammatory cytokines.
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Affiliation(s)
- Ju-Wan Kim
- Department of Psychiatry, and Depression Clinical Research Centre, Chonnam National University Medical School, Gwangju, South Korea
| | - Robert Stewart
- Institute of Psychiatry, King's College London, London, United Kingdom
| | - Hee-Ju Kang
- Department of Psychiatry, and Depression Clinical Research Centre, Chonnam National University Medical School, Gwangju, South Korea
| | - Kyung-Yeol Bae
- Department of Psychiatry, and Depression Clinical Research Centre, Chonnam National University Medical School, Gwangju, South Korea
| | - Sung-Wan Kim
- Department of Psychiatry, and Depression Clinical Research Centre, Chonnam National University Medical School, Gwangju, South Korea
| | - Il-Seon Shin
- Department of Psychiatry, and Depression Clinical Research Centre, Chonnam National University Medical School, Gwangju, South Korea
| | - Jin-Sang Yoon
- Department of Psychiatry, and Depression Clinical Research Centre, Chonnam National University Medical School, Gwangju, South Korea
| | - Jae-Min Kim
- Department of Psychiatry, and Depression Clinical Research Centre, Chonnam National University Medical School, Gwangju, South Korea
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103
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Vega JN, Dumas J, Newhouse PA. Cognitive Effects of Chemotherapy and Cancer-Related Treatments in Older Adults. Am J Geriatr Psychiatry 2017; 25:1415-1426. [PMID: 28495470 PMCID: PMC5630507 DOI: 10.1016/j.jagp.2017.04.001] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 03/22/2017] [Accepted: 04/03/2017] [Indexed: 12/20/2022]
Abstract
Advances in cancer treatment are producing a growing number of cancer survivors; therefore, issues surrounding quality of life during and following cancer treatment have become increasingly important. Chemotherapy-related cognitive impairment (CRCI) is a problem that is commonly reported following the administration of chemotherapy treatment in patients with cancer. Research suggests that CRCI can persist for months to years after completing treatment, which has implications for the trajectory of normal and pathologic cognitive aging for the growing number of long-term cancer survivors. These problems are particularly relevant for older individuals, given that cancer is largely a disease of older age, and the number of patients with cancer who are aged 65 years or older will increase dramatically over the coming decades. This review will briefly summarize empirical findings related to CRCI, discuss CRCI in older patients with cancer, propose potential causative hypotheses, and provide a canonical patient case to illustrate how CRCI presents clinically. Finally, potential intervention strategies for CRCI will be highlighted and issues to consider when evaluating older patients with a history of cancer will be discussed.
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Affiliation(s)
- Jennifer N Vega
- Center for Cognitive Medicine, Department of Psychiatry and Behavioral Sciences, Vanderbilt University School of Medicine, Nashville, TN
| | - Julie Dumas
- Clinical Neuroscience Research Unit, Department of Psychiatry, University of Vermont Robert Larner M.D. College of Medicine, Burlington, VT
| | - Paul A Newhouse
- Center for Cognitive Medicine, Department of Psychiatry and Behavioral Sciences, Vanderbilt University School of Medicine, Nashville, TN; Geriatric Research, Education, and Clinical Center, Veterans Affairs Tennessee Valley Health System, Nashville, TN.
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104
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Walker KA, Hoogeveen RC, Folsom AR, Ballantyne CM, Knopman DS, Windham BG, Jack CR, Gottesman RF. Midlife systemic inflammatory markers are associated with late-life brain volume: The ARIC study. Neurology 2017; 89:2262-2270. [PMID: 29093073 PMCID: PMC5705246 DOI: 10.1212/wnl.0000000000004688] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 09/08/2017] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To clarify the temporal relationship between systemic inflammation and neurodegeneration, we examined whether a higher level of circulating inflammatory markers during midlife was associated with smaller brain volumes in late life using a large biracial prospective cohort study. METHODS Plasma levels of systemic inflammatory markers (fibrinogen, albumin, white blood cell count, von Willebrand factor, and Factor VIII) were assessed at baseline in 1,633 participants (mean age 53 [5] years, 60% female, 27% African American) enrolled in the Atherosclerosis Risk in Communities Study. Using all 5 inflammatory markers, an inflammation composite score was created for each participant. We assessed episodic memory and regional brain volumes, using 3T MRI, 24 years later. RESULTS Each SD increase in midlife inflammation composite score was associated with 1,788 mm3 greater ventricular (p = 0.013), 110 mm3 smaller hippocampal (p = 0.013), 519 mm3 smaller occipital (p = 0.009), and 532 mm3 smaller Alzheimer disease signature region (p = 0.008) volumes, and reduced episodic memory (p = 0.046) 24 years later. Compared to participants with no elevated (4th quartile) midlife inflammatory markers, participants with elevations in 3 or more markers had, on average, 5% smaller hippocampal and Alzheimer disease signature region volumes. The association between midlife inflammation and late-life brain volume was modified by age and race, whereby younger participants and white participants with higher levels of systemic inflammation during midlife were more likely to show reduced brain volumes subsequently. CONCLUSIONS Our prospective findings provide evidence for what may be an early contributory role of systemic inflammation in neurodegeneration and cognitive aging.
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Affiliation(s)
- Keenan A Walker
- From the Departments of Neurology (K.A.W., R.F.G.) and Epidemiology (R.F.G.), Johns Hopkins University School of Medicine, Baltimore, MD; Section of Cardiology (R.C.H., C.M.B.), Baylor College of Medicine; Center for Cardiovascular Disease Prevention (R.C.H., C.M.B.), Houston Methodist DeBakey Heart and Vascular Center, TX; Division of Epidemiology and Community Health (A.R.F.), School of Public Health, University of Minnesota, Minneapolis; Departments of Neurology (D.S.K.) and Radiology (C.R.J.), Mayo Clinic, Rochester, MN; and Department of Medicine (B.G.W.), University of Mississippi Medical Center, Jackson.
| | - Ron C Hoogeveen
- From the Departments of Neurology (K.A.W., R.F.G.) and Epidemiology (R.F.G.), Johns Hopkins University School of Medicine, Baltimore, MD; Section of Cardiology (R.C.H., C.M.B.), Baylor College of Medicine; Center for Cardiovascular Disease Prevention (R.C.H., C.M.B.), Houston Methodist DeBakey Heart and Vascular Center, TX; Division of Epidemiology and Community Health (A.R.F.), School of Public Health, University of Minnesota, Minneapolis; Departments of Neurology (D.S.K.) and Radiology (C.R.J.), Mayo Clinic, Rochester, MN; and Department of Medicine (B.G.W.), University of Mississippi Medical Center, Jackson
| | - Aaron R Folsom
- From the Departments of Neurology (K.A.W., R.F.G.) and Epidemiology (R.F.G.), Johns Hopkins University School of Medicine, Baltimore, MD; Section of Cardiology (R.C.H., C.M.B.), Baylor College of Medicine; Center for Cardiovascular Disease Prevention (R.C.H., C.M.B.), Houston Methodist DeBakey Heart and Vascular Center, TX; Division of Epidemiology and Community Health (A.R.F.), School of Public Health, University of Minnesota, Minneapolis; Departments of Neurology (D.S.K.) and Radiology (C.R.J.), Mayo Clinic, Rochester, MN; and Department of Medicine (B.G.W.), University of Mississippi Medical Center, Jackson
| | - Christie M Ballantyne
- From the Departments of Neurology (K.A.W., R.F.G.) and Epidemiology (R.F.G.), Johns Hopkins University School of Medicine, Baltimore, MD; Section of Cardiology (R.C.H., C.M.B.), Baylor College of Medicine; Center for Cardiovascular Disease Prevention (R.C.H., C.M.B.), Houston Methodist DeBakey Heart and Vascular Center, TX; Division of Epidemiology and Community Health (A.R.F.), School of Public Health, University of Minnesota, Minneapolis; Departments of Neurology (D.S.K.) and Radiology (C.R.J.), Mayo Clinic, Rochester, MN; and Department of Medicine (B.G.W.), University of Mississippi Medical Center, Jackson
| | - David S Knopman
- From the Departments of Neurology (K.A.W., R.F.G.) and Epidemiology (R.F.G.), Johns Hopkins University School of Medicine, Baltimore, MD; Section of Cardiology (R.C.H., C.M.B.), Baylor College of Medicine; Center for Cardiovascular Disease Prevention (R.C.H., C.M.B.), Houston Methodist DeBakey Heart and Vascular Center, TX; Division of Epidemiology and Community Health (A.R.F.), School of Public Health, University of Minnesota, Minneapolis; Departments of Neurology (D.S.K.) and Radiology (C.R.J.), Mayo Clinic, Rochester, MN; and Department of Medicine (B.G.W.), University of Mississippi Medical Center, Jackson
| | - B Gwen Windham
- From the Departments of Neurology (K.A.W., R.F.G.) and Epidemiology (R.F.G.), Johns Hopkins University School of Medicine, Baltimore, MD; Section of Cardiology (R.C.H., C.M.B.), Baylor College of Medicine; Center for Cardiovascular Disease Prevention (R.C.H., C.M.B.), Houston Methodist DeBakey Heart and Vascular Center, TX; Division of Epidemiology and Community Health (A.R.F.), School of Public Health, University of Minnesota, Minneapolis; Departments of Neurology (D.S.K.) and Radiology (C.R.J.), Mayo Clinic, Rochester, MN; and Department of Medicine (B.G.W.), University of Mississippi Medical Center, Jackson
| | - Clifford R Jack
- From the Departments of Neurology (K.A.W., R.F.G.) and Epidemiology (R.F.G.), Johns Hopkins University School of Medicine, Baltimore, MD; Section of Cardiology (R.C.H., C.M.B.), Baylor College of Medicine; Center for Cardiovascular Disease Prevention (R.C.H., C.M.B.), Houston Methodist DeBakey Heart and Vascular Center, TX; Division of Epidemiology and Community Health (A.R.F.), School of Public Health, University of Minnesota, Minneapolis; Departments of Neurology (D.S.K.) and Radiology (C.R.J.), Mayo Clinic, Rochester, MN; and Department of Medicine (B.G.W.), University of Mississippi Medical Center, Jackson
| | - Rebecca F Gottesman
- From the Departments of Neurology (K.A.W., R.F.G.) and Epidemiology (R.F.G.), Johns Hopkins University School of Medicine, Baltimore, MD; Section of Cardiology (R.C.H., C.M.B.), Baylor College of Medicine; Center for Cardiovascular Disease Prevention (R.C.H., C.M.B.), Houston Methodist DeBakey Heart and Vascular Center, TX; Division of Epidemiology and Community Health (A.R.F.), School of Public Health, University of Minnesota, Minneapolis; Departments of Neurology (D.S.K.) and Radiology (C.R.J.), Mayo Clinic, Rochester, MN; and Department of Medicine (B.G.W.), University of Mississippi Medical Center, Jackson
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105
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Tronson NC, Collette KM. (Putative) sex differences in neuroimmune modulation of memory. J Neurosci Res 2017; 95:472-486. [PMID: 27870428 DOI: 10.1002/jnr.23921] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 08/11/2016] [Accepted: 08/22/2016] [Indexed: 12/11/2022]
Abstract
The neuroimmune system is significantly sexually dimorphic, with sex differences evident in the number and activation states of microglia, in the activation of astrocytes, and in cytokine release and function. Neuroimmune cells and signaling are now recognized as critical for many neural functions throughout the life span, including synaptic plasticity and memory function. Here we address the question of how cytokines, astrocytes, and microglia contribute to memory, and specifically how neuroimmune modulation of memory differentially affects males and females. Understanding sex differences in both normal memory processes and dysregulation of memory in psychiatric and neurological disorders is critical for developing treatment and preventive strategies for memory disorders that are effective for both men and women. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Natalie C Tronson
- Department of Psychology, University of Michigan, Ann Arbor, Michigan
| | - Katie M Collette
- Department of Psychology, University of Michigan, Ann Arbor, Michigan
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106
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Sundman MH, Chen NK, Subbian V, Chou YH. The bidirectional gut-brain-microbiota axis as a potential nexus between traumatic brain injury, inflammation, and disease. Brain Behav Immun 2017; 66:31-44. [PMID: 28526435 DOI: 10.1016/j.bbi.2017.05.009] [Citation(s) in RCA: 101] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 04/25/2017] [Accepted: 05/10/2017] [Indexed: 02/06/2023] Open
Abstract
As head injuries and their sequelae have become an increasingly salient matter of public health, experts in the field have made great progress elucidating the biological processes occurring within the brain at the moment of injury and throughout the recovery thereafter. Given the extraordinary rate at which our collective knowledge of neurotrauma has grown, new insights may be revealed by examining the existing literature across disciplines with a new perspective. This article will aim to expand the scope of this rapidly evolving field of research beyond the confines of the central nervous system (CNS). Specifically, we will examine the extent to which the bidirectional influence of the gut-brain axis modulates the complex biological processes occurring at the time of traumatic brain injury (TBI) and over the days, months, and years that follow. In addition to local enteric signals originating in the gut, it is well accepted that gastrointestinal (GI) physiology is highly regulated by innervation from the CNS. Conversely, emerging data suggests that the function and health of the CNS is modulated by the interaction between 1) neurotransmitters, immune signaling, hormones, and neuropeptides produced in the gut, 2) the composition of the gut microbiota, and 3) integrity of the intestinal wall serving as a barrier to the external environment. Specific to TBI, existing pre-clinical data indicates that head injuries can cause structural and functional damage to the GI tract, but research directly investigating the neuronal consequences of this intestinal damage is lacking. Despite this void, the proposed mechanisms emanating from a damaged gut are closely implicated in the inflammatory processes known to promote neuropathology in the brain following TBI, which suggests the gut-brain axis may be a therapeutic target to reduce the risk of Chronic Traumatic Encephalopathy and other neurodegenerative diseases following TBI. To better appreciate how various peripheral influences are implicated in the health of the CNS following TBI, this paper will also review the secondary biological injury mechanisms and the dynamic pathophysiological response to neurotrauma. Together, this review article will attempt to connect the dots to reveal novel insights into the bidirectional influence of the gut-brain axis and propose a conceptual model relevant to the recovery from TBI and subsequent risk for future neurological conditions.
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Affiliation(s)
- Mark H Sundman
- Department of Psychology, University of Arizona, Tucson, AZ, USA.
| | - Nan-Kuei Chen
- Department of Biomedical Engineering, University of Arizona, Tucson, AZ, USA
| | - Vignesh Subbian
- Department of Biomedical Engineering, University of Arizona, Tucson, AZ, USA; Department of Systems and Industrial Engineering, University of Arizona, Tucson, AZ, USA
| | - Ying-Hui Chou
- Department of Psychology, University of Arizona, Tucson, AZ, USA; Cognitive Science Program, University of Arizona, Tucson, AZ, USA; Arizona Center on Aging, University of Arizona, Tucson, AZ, USA
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107
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Silverman JM, Schmeidler J. The protected survivor model: Using resistant successful cognitive aging to identify protection in the very old. Med Hypotheses 2017; 110:9-14. [PMID: 29317078 DOI: 10.1016/j.mehy.2017.10.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 10/18/2017] [Accepted: 10/24/2017] [Indexed: 11/28/2022]
Abstract
For some cardiovascular risk factors, association with risk for cognitive impairment observed in early old age is reduced, or paradoxically even reversed, as age of outcome increases. Successful cognitive aging is intact cognition in the oldest-old; we define resistant successful cognitive aging as successful cognitive aging despite high risk. The protected survivor model posits that a minority of the general population has a protective factor that mitigates the negative effect of a risk factor on successful cognitive aging for the unprotected majority. As age increases, differential failure rates increase the proportion of survivors with protection. Among the unprotected, the proportion with low risk increases, but among those with protection, high risk and low risk do not differ. Due to differential mortality, half the survivors are eventually protected - a majority among those with high risk, and a minority among those with low risk. According to the protective survivor model, an example of Simpson's paradox, the association of the risk factor with survival does not change within an individual, but the association in the surviving population changes as its age increases. We created quantitative illustrations of a simplified protected survivor model applied to successful cognitive aging to explain how the usual association of a risk factor with cognitive decline is reversed in the very old. In the illustrations, probability of subsequent survival was higher for survivors with high risk (mostly protected) than low risk (mostly not protected), an example of Simpson's paradox. Resistance to disease despite the presence of risk factors is consistent with the presence of countervailing protection. Based on the protected survivor model, we hypothesize that studies seeking protective factors against cognitive decline will be more effective by limiting a successful cognitive aging sample to resistant successful cognitive aging - to contrast with a sample without successful cognitive aging.
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Affiliation(s)
- Jeremy M Silverman
- Icahn School of Medicine at Mount Sinai, Department of Psychiatry, Box 1230, One Gustave L. Levy Place, New York, NY 10029, United States; James J. Peters Veterans Affairs Medical Center, Research & Development, Mail Code 151, 130 West Kingsbridge Road, Bronx, NY 10468, United States.
| | - James Schmeidler
- Icahn School of Medicine at Mount Sinai, Department of Psychiatry, Box 1230, One Gustave L. Levy Place, New York, NY 10029, United States
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108
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Cestari JAF, Fabri GMC, Kalil J, Nitrini R, Jacob-Filho W, de Siqueira JTT, Siqueira SRDT. Oral Infections and Cytokine Levels in Patients with Alzheimer's Disease and Mild Cognitive Impairment Compared with Controls. J Alzheimers Dis 2017; 52:1479-85. [PMID: 27104907 DOI: 10.3233/jad-160212] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
BACKGROUND Oral infections are prevalent in the adult population. Their impact includes the implication as a risk factor for Alzheimer's disease (AD), altering its progression. One of the potential mechanisms involves immune mediators such as circulating cytokines. OBJECTIVE The goal of the present study was to investigate the prevalence of oral infections and blood levels of IL-1β, TNF-α, and IL-6 in patients with AD, mild cognitive impairment (MCI), and controls. METHODS Sixty-five elderly were evaluated (25 AD, 19 MCI, and 21 controls) by the following methods: Mini Mental State Exam, Questionnaire of Functional Activities, periodontal and oral evaluation, and blood concentrations of IL-1β, TNF-α and IL-6. RESULTS Patients with AD had high serum IL-6 levels (p = 0.029), and patients with periodontitis had high serum TNF-α levels (p = 0.005). There was an association between IL-6 and TNF-α in patients with AD/MCI and periodontitis (p = 0.023). CONCLUSION The increased levels of TNF-α and IL-6 in this study suggests their implication in the overlapping mechanisms between oral infections and AD. Longitudinal studies are necessary for further investigation.
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Affiliation(s)
| | - Gisele Maria Campos Fabri
- Orofacial Pain Team, Dentistry Division, Hospital das Clinicas, School of Medicine of the University of São Paulo, Brazil.,Federal University of Juiz de Fora, Brazil
| | - Jorge Kalil
- Laboratory of Medical Investigation in Immunology, School of Medicine of the University of São Paulo, Brazil
| | - Ricardo Nitrini
- Neurology Department, School of Medicine of the University of São Paulo, Brazil
| | - Wilson Jacob-Filho
- Geriatric Clinic, Clinical Medicine Department, School of Medicine of the University of São Paulo, Brazil
| | | | - Silvia Regina D T Siqueira
- Neurology Department, School of Medicine of the University of São Paulo, Brazil.,Orofacial Pain Team, Dentistry Division, Hospital das Clinicas, School of Medicine of the University of São Paulo, Brazil.,Gerontology, School of Arts, Science and Medicine, University of São Paulo, Brazil
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109
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Yeh TS, Ho YC, Hsu CL, Pan SL. Spinal cord injury and Alzheimer's disease risk: a population-based, retrospective cohort study. Spinal Cord 2017; 56:151-157. [PMID: 29057990 DOI: 10.1038/s41393-017-0009-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 08/25/2017] [Accepted: 08/25/2017] [Indexed: 01/23/2023]
Abstract
STUDY DESIGN Propensity score-matched, retrospective cohort study. OBJECTIVES To determine the risk of developing Alzheimer's disease (AD) in patients with spinal cord injury (SCI). SETTING The present study used Taiwan's National Health Insurance Research Database. METHODS A total of 9257 patients who had ⩾2 ambulatory visits with a diagnosis of SCI in 2001 were included in the SCI group. The non-SCI group consisted of 37,028 propensity score-matched patients without a diagnosis of SCI. The cumulative incidence of AD was estimated for each of the two patient groups using the Kaplan-Meier method. Stratified Cox proportional hazard regression was then employed to assess the influence of SCI on the risk of AD. RESULTS During the follow-up period, 25 subjects in the SCI group and 57 in the non-SCI group developed AD. The cumulative incidence of AD in the SCI group was higher than in the non-SCI group (P = 0.0168); and the hazard ratio of AD for the SCI group, as compared to the non-SCI group, was 1.71 (95% CI 1.06-2.76, P = 0.0273). CONCLUSIONS This study suggests that patients with SCI have an increased risk of developing AD.
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Affiliation(s)
- Tian-Shin Yeh
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital Yun-Lin Branch, Yun-Lin, Taiwan
| | - Yu-Chun Ho
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital Hsin-Chu Branch, Hsin-Chu, Taiwan
| | - Cherng-Lan Hsu
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Taipei, Taiwan
| | - Shin-Liang Pan
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital Hsin-Chu Branch, Hsin-Chu, Taiwan. .,Department of Physical Medicine and Rehabilitation, National Taiwan University College of Medicine, Taipei, Taiwan.
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110
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Mohlenhoff BS, O'Donovan A, Weiner MW, Neylan TC. Dementia Risk in Posttraumatic Stress Disorder: the Relevance of Sleep-Related Abnormalities in Brain Structure, Amyloid, and Inflammation. Curr Psychiatry Rep 2017; 19:89. [PMID: 29035423 PMCID: PMC5797832 DOI: 10.1007/s11920-017-0835-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
PURPOSE OF REVIEW Posttraumatic stress disorder (PTSD) is associated with increased risk for dementia, yet mechanisms are poorly understood. RECENT FINDINGS Recent literature suggests several potential mechanisms by which sleep impairments might contribute to the increased risk of dementia observed in PTSD. First, molecular, animal, and imaging studies indicate that sleep problems lead to cellular damage in brain structures crucial to learning and memory. Second, recent studies have shown that lack of sleep might precipitate the accumulation of harmful amyloid proteins. Finally, sleep and PTSD are associated with elevated inflammation, which, in turn, is associated with dementia, possibly via cytokine-mediated neural toxicity and reduced neurogenesis. A better understanding of these mechanisms may yield novel treatment approaches to reduce neurodegeneration in PTSD. The authors emphasize the importance of including sleep data in studies of PTSD and cognition and identify next steps.
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Affiliation(s)
- Brian S Mohlenhoff
- Departments of Psychiatry, University of California, San Francisco, CA, USA.
- Center for Imaging of Neurodegenerative Disease, Veterans Administration Medical Center, 4150 Clement Street (116P), San Francisco, CA, 94121, USA.
- Mental Health Service, Department of Veterans Affairs Medical Center, San Francisco, CA, USA.
| | - Aoife O'Donovan
- Departments of Psychiatry, University of California, San Francisco, CA, USA
- Mental Health Service, Department of Veterans Affairs Medical Center, San Francisco, CA, USA
| | - Michael W Weiner
- Departments of Psychiatry, University of California, San Francisco, CA, USA
- Center for Imaging of Neurodegenerative Disease, Veterans Administration Medical Center, 4150 Clement Street (116P), San Francisco, CA, 94121, USA
- Departments of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA
| | - Thomas C Neylan
- Departments of Psychiatry, University of California, San Francisco, CA, USA
- Center for Imaging of Neurodegenerative Disease, Veterans Administration Medical Center, 4150 Clement Street (116P), San Francisco, CA, 94121, USA
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111
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Gu Y, Vorburger R, Scarmeas N, Luchsinger JA, Manly JJ, Schupf N, Mayeux R, Brickman AM. Circulating inflammatory biomarkers in relation to brain structural measurements in a non-demented elderly population. Brain Behav Immun 2017; 65:150-160. [PMID: 28457809 PMCID: PMC5537030 DOI: 10.1016/j.bbi.2017.04.022] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 04/24/2017] [Accepted: 04/26/2017] [Indexed: 10/19/2022] Open
Abstract
The aim of this investigation was to determine whether circulating inflammatory biomarkers c-reactive protein (CRP), interleukin-6 (IL6), and alpha 1-antichymotrypsin (ACT) were related to structural brain measures assessed by magnetic resonance imaging (MRI). High-resolution structural MRI was collected on 680 non-demented elderly (mean age 80.1years) participants of a community-based, multiethnic cohort. Approximately three quarters of these participants also had peripheral inflammatory biomarkers (CRP, IL6, and ACT) measured using ELISA. Structural measures including brain volumes and cortical thickness (with both global and regional measures) were derived from MRI scans, and repeated MRI measures were obtained after 4.5years. Mean fractional anisotropy was used as the indicator of white matter integrity assessed with diffusion tensor imaging. We examined the association of inflammatory biomarkers with brain volume, cortical thickness, and white matter integrity using regression models adjusted for age, gender, ethnicity, education, APOE genotype, and intracranial volume. A doubling in CRP (b=-2.48, p=0.002) was associated with a smaller total gray matter volume, equivalent to approximately 1.5years of aging. A doubling in IL6 was associated with smaller total brain volume (b=-14.96, p<0.0001), equivalent to approximately 9years of aging. Higher IL6 was also associated with smaller gray matter (b=-6.52, p=0.002) and white matter volumes (b=-7.47, p=0.004). The volumes of most cortical regions including frontal, occipital, parietal, temporal, as well as subcortical regions including pallidum and thalamus were associated with IL6. In a model additionally adjusted for depression, vascular factors, BMI, and smoking status, the association between IL6 and brain volumes remained, and a doubling in ACT was marginally associated with 0.054 (p=0.001) millimeter thinner mean cortical thickness, equivalent to that of approximately 2.7years of aging. None of the biomarkers was associated with mean fractional anisotropy or longitudinal change of brain volumes and thickness. Among older adults, increased circulating inflammatory biomarkers were associated with smaller brain volume and cortical thickness but not the white matter tract integrity. Our preliminary findings suggest that peripheral inflammatory processes may be involved in the brain atrophy in the elderly.
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Affiliation(s)
- Yian Gu
- The Taub Institute for Research in Alzheimer's Disease and the Aging Brain, Columbia University, New York, NY, United States; The Department of Neurology, Columbia University, New York, NY, United States.
| | - Robert Vorburger
- The Taub Institute for Research in Alzheimer's Disease and the Aging Brain, Columbia University, New York, NY
| | - Nikolaos Scarmeas
- The Taub Institute for Research in Alzheimer's Disease and the Aging Brain, Columbia University, New York, NY,The Department of Neurology, Columbia University, New York, NY,The Gertrude H. Sergievsky Center, Columbia University, New York, NY,National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - José A. Luchsinger
- The Taub Institute for Research in Alzheimer's Disease and the Aging Brain, Columbia University, New York, NY,The Department of Neurology, Columbia University, New York, NY,Department of Medicine, Columbia University College of Physicians and Surgeons, New York, NY,The Department of Epidemiology, Joseph P. Mailman School of Public Health, Columbia University, New York, NY
| | - Jennifer J. Manly
- The Taub Institute for Research in Alzheimer's Disease and the Aging Brain, Columbia University, New York, NY,The Department of Neurology, Columbia University, New York, NY,The Gertrude H. Sergievsky Center, Columbia University, New York, NY
| | - Nicole Schupf
- The Taub Institute for Research in Alzheimer's Disease and the Aging Brain, Columbia University, New York, NY,The Department of Neurology, Columbia University, New York, NY,The Department of Epidemiology, Joseph P. Mailman School of Public Health, Columbia University, New York, NY
| | - Richard Mayeux
- The Taub Institute for Research in Alzheimer's Disease and the Aging Brain, Columbia University, New York, NY,The Department of Neurology, Columbia University, New York, NY,The Gertrude H. Sergievsky Center, Columbia University, New York, NY,The Department of Epidemiology, Joseph P. Mailman School of Public Health, Columbia University, New York, NY
| | - Adam M. Brickman
- The Taub Institute for Research in Alzheimer's Disease and the Aging Brain, Columbia University, New York, NY,The Department of Neurology, Columbia University, New York, NY,The Gertrude H. Sergievsky Center, Columbia University, New York, NY
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112
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Teixeira D, Cecconello AL, Partata WA, de Fraga LS, Ribeiro MFM, Guedes RP. The metabolic and neuroinflammatory changes induced by consuming a cafeteria diet are age-dependent. Nutr Neurosci 2017; 22:284-294. [PMID: 28958196 DOI: 10.1080/1028415x.2017.1380892] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
OBJECTIVES To compare the effects of a palatable cafeteria diet on serum parameters and neuroinflammatory markers of young and aged female Wistar rats. METHODS Three-month-old (young) and 18-month-old (aged) female Wistar rats had access to a cafeteria diet (Caf-Young, Caf-Aged) or a standard chow diet (Std-Young, Std-Aged). RESULTS The Caf-Young group showed a higher food consumption, weight gain, visceral fat depot, serum insulin and leptin levels, and the insulin resistance index (HOMA-IR) than the Std-Young group. The Caf-Aged group exhibited an increase in interleukin-1 levels in the cerebral cortex and hippocampus. The number of GFAP-positive cells did not differ between the groups, but there was a diet effect in the cerebral cortex and an age effect in the hippocampus. Phospho-tau expression did not differ between the groups. DISCUSSION The 3- and 18-month-old rats responded differently to a cafeteria diet. Insulin and leptin levels are elevated in young animals fed a cafeteria diet, whereas aged animals are prone to neuroinflammation (indicated by an increase in interleukin-1β levels). A combination of hypercaloric diet and senescence have detrimental effects on the inflammatory response in the brain, which may predispose to neurological diseases.
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Affiliation(s)
- Deborah Teixeira
- a Department of Physiology , Federal University of Rio Grande do Sul (UFRGS) , Porto Alegre , Brazil
| | - Ana Lucia Cecconello
- a Department of Physiology , Federal University of Rio Grande do Sul (UFRGS) , Porto Alegre , Brazil
| | - Wania Aparecida Partata
- a Department of Physiology , Federal University of Rio Grande do Sul (UFRGS) , Porto Alegre , Brazil
| | - Luciano Stürmer de Fraga
- a Department of Physiology , Federal University of Rio Grande do Sul (UFRGS) , Porto Alegre , Brazil
| | | | - Renata Padilha Guedes
- b Departament of Basic Health Sciences , Federal University of Health Sciences of Porto Alegre (UFCSPA) , Porto Alegre , Brazil
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Environmental Enrichment Potently Prevents Microglia-Mediated Neuroinflammation by Human Amyloid β-Protein Oligomers. J Neurosci 2017; 36:9041-56. [PMID: 27581448 DOI: 10.1523/jneurosci.1023-16.2016] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Accepted: 07/06/2016] [Indexed: 11/21/2022] Open
Abstract
UNLABELLED Microglial dysfunction is increasingly recognized as a key contributor to the pathogenesis of Alzheimer's disease (AD). Environmental enrichment (EE) is well documented to enhance neuronal form and function, but almost nothing is known about whether and how it alters the brain's innate immune system. Here we found that prolonged exposure of naive wild-type mice to EE significantly altered microglial density and branching complexity in the dentate gyrus of hippocampus. In wild-type mice injected intraventricularly with soluble Aβ oligomers (oAβ) from hAPP-expressing cultured cells, EE prevented several morphological features of microglial inflammation and consistently prevented oAβ-mediated mRNA changes in multiple inflammatory genes both in vivo and in primary microglia cultured from the mice. Microdialysis in behaving mice confirmed that EE normalized increases in the extracellular levels of the key cytokines (CCL3, CCL4, TNFα) identified by the mRNA analysis. Moreover, EE prevented the changes in microglial gene expression caused by ventricular injection of oAβ extracted directly from AD cerebral cortex. We conclude that EE potently alters the form and function of microglia in a way that prevents their inflammatory response to human oAβ, suggesting that prolonged environmental enrichment could protect against AD by modulating the brain's innate immune system. SIGNIFICANCE STATEMENT Environmental enrichment (EE) is a potential therapy to delay Alzheimer's disease (AD). Microglial inflammation is associated with the progression of AD, but the influence of EE on microglial inflammation is unclear. Here we systematically applied in vivo methods to show that EE alters microglia in the dentate gyrus under physiological conditions and robustly prevents microglial inflammation induced by human Aβ oligomers, as shown by neutralized microglial inflammatory morphology, mRNA changes, and brain interstitial fluid cytokine levels. Our findings suggest that EE alters the innate immune system and could serve as a therapeutic approach to AD and provide new targets for drug discovery. Further, we propose that the therapeutic benefits of EE could extend to other neurodegenerative diseases involving microglial inflammation.
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114
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Lee JK, Kim NJ. Recent Advances in the Inhibition of p38 MAPK as a Potential Strategy for the Treatment of Alzheimer's Disease. Molecules 2017; 22:molecules22081287. [PMID: 28767069 PMCID: PMC6152076 DOI: 10.3390/molecules22081287] [Citation(s) in RCA: 219] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Revised: 07/27/2017] [Accepted: 08/01/2017] [Indexed: 12/11/2022] Open
Abstract
P38 mitogen-activated protein kinase (MAPK) is a crucial target for chronic inflammatory diseases. Alzheimer’s disease (AD) is characterized by the presence of amyloid plaques and neurofibrillary tangles in the brain, as well as neurodegeneration, and there is no known cure. Recent studies on the underlying biology of AD in cellular and animal models have indicated that p38 MAPK is capable of orchestrating diverse events related to AD, such as tau phosphorylation, neurotoxicity, neuroinflammation and synaptic dysfunction. Thus, the inhibition of p38 MAPK is considered a promising strategy for the treatment of AD. In this review, we summarize recent advances in the targeting of p38 MAPK as a potential strategy for the treatment of AD and envision possibilities of p38 MAPK inhibitors as a fundamental therapeutics for AD.
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Affiliation(s)
- Jong Kil Lee
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea.
| | - Nam-Jung Kim
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea.
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115
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Bednarska-Makaruk M, Graban A, Wiśniewska A, Łojkowska W, Bochyńska A, Gugała-Iwaniuk M, Sławińska K, Ługowska A, Ryglewicz D, Wehr H. Association of adiponectin, leptin and resistin with inflammatory markers and obesity in dementia. Biogerontology 2017; 18:561-580. [PMID: 28421328 PMCID: PMC5514216 DOI: 10.1007/s10522-017-9701-0] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Accepted: 04/07/2017] [Indexed: 12/12/2022]
Abstract
The aim of the study was to determine the role of adiponectin, leptin and resistin in various types of dementia and to investigate their association with inflammatory markers, insulin resistance and abdominal obesity. In 205 patients with dementia [89 with Alzheimer's disease (AD), 47 with vascular dementia (VaD), 69 with mixed dementia (MD)], 113 persons with mild cognitive impairment and in 107 controls serum adiponectin, leptin and resistin levels, pro-inflammatory [interleukin-6 (IL-6), C-reactive protein (hsCRP) and chitotriosidase] and anti-inflammatory (25-OH vitamin D, HDL-cholesterol and paraoxonase 1) markers, as well as glucose metabolism parameters (glucose, insulin and HOMA-IR) were determined. In all-cause dementia adiponectin and resistin levels were significantly higher as compared to the controls; leptin levels did not show differences. Higher adiponectin levels concerned AD and MD, whereas higher resistin-VaD and MD. After stratification by abdominal obesity the differences in adiponectin levels remained significant in subjects without obesity. In all-cause dementia negative correlation of adiponectin with obesity, glucose metabolism parameters, IL-6 and hsCRP and positive correlation with HDL-cholesterol were found. Positive correlation of resistin with age, IL-6, hsCRP and chitotriosidase and negative correlation with HDL-cholesterol and paraoxonase 1 were stated. We conclude that dementia of neurodegenerative origin is characterized by elevated adiponectin levels, whereas dementia with vascular changes by increase of resistin. Association with inflammatory indicators may suggest the pro-inflammatory role of resistin in the development of dementia, especially in dementia of vascular mechanism. Identification of this novel biomarker may be important in preventing dementia.
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Affiliation(s)
| | - Ałła Graban
- First Department of Neurology, Institute of Psychiatry and Neurology, Sobieskiego 9, 02-957, Warsaw, Poland
| | - Anna Wiśniewska
- Department of Genetics, Institute of Psychiatry and Neurology, Sobieskiego 9, 02-957, Warsaw, Poland
| | - Wanda Łojkowska
- First Department of Neurology, Institute of Psychiatry and Neurology, Sobieskiego 9, 02-957, Warsaw, Poland
| | - Anna Bochyńska
- First Department of Neurology, Institute of Psychiatry and Neurology, Sobieskiego 9, 02-957, Warsaw, Poland
| | - Magdalena Gugała-Iwaniuk
- First Department of Neurology, Institute of Psychiatry and Neurology, Sobieskiego 9, 02-957, Warsaw, Poland
| | - Ksenia Sławińska
- First Department of Neurology, Institute of Psychiatry and Neurology, Sobieskiego 9, 02-957, Warsaw, Poland
| | - Agnieszka Ługowska
- Department of Genetics, Institute of Psychiatry and Neurology, Sobieskiego 9, 02-957, Warsaw, Poland
| | - Danuta Ryglewicz
- First Department of Neurology, Institute of Psychiatry and Neurology, Sobieskiego 9, 02-957, Warsaw, Poland
| | - Hanna Wehr
- Department of Genetics, Institute of Psychiatry and Neurology, Sobieskiego 9, 02-957, Warsaw, Poland
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Chen J, Yin W, Tu Y, Wang S, Yang X, Chen Q, Zhang X, Han Y, Pi R. L-F001, a novel multifunctional ROCK inhibitor, suppresses neuroinflammation in vitro and in vivo: Involvement of NF-κB inhibition and Nrf2 pathway activation. Eur J Pharmacol 2017; 806:1-9. [DOI: 10.1016/j.ejphar.2017.03.025] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 03/05/2017] [Accepted: 03/15/2017] [Indexed: 10/20/2022]
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117
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Pinner E, Gruper Y, Ben Zimra M, Kristt D, Laudon M, Naor D, Zisapel N. CD44 Splice Variants as Potential Players in Alzheimer’s Disease Pathology. J Alzheimers Dis 2017; 58:1137-1149. [DOI: 10.3233/jad-161245] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
| | | | - Micha Ben Zimra
- The Lautenberg Center for General and Tumor Immunology, The Hebrew University-Hadassah Medical School, Jerusalem, Israel
| | - Don Kristt
- Molecular Pathology Unit, Rabin Medical Center, Petah Tikva, Israel
| | | | - David Naor
- The Lautenberg Center for General and Tumor Immunology, The Hebrew University-Hadassah Medical School, Jerusalem, Israel
| | - Nava Zisapel
- Neurim Pharmaceuticals Ltd, Tel-Aviv, Israel
- Department of Neurobiology Faculty of Life Sciences, Tel-Aviv University, Tel-Aviv, Israel
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118
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Aldrugh S, Sardana M, Henninger N, Saczynski JS, McManus DD. Atrial fibrillation, cognition and dementia: A review. J Cardiovasc Electrophysiol 2017; 28:958-965. [PMID: 28569383 DOI: 10.1111/jce.13261] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 05/19/2017] [Accepted: 05/22/2017] [Indexed: 12/15/2022]
Abstract
Atrial fibrillation (AF) is one of the most common types of cardiac arrhythmia, particularly among older adults. AF confers a 5-fold risk for thromboembolic stroke as well as a 2-fold higher risk for congestive heart failure, morbidity, and mortality. Although stroke remains an important and impactful complication of AF, recent studies have shown that AF is independently associated with other neurological disorders, including cognitive impairment and dementia, even after adjusting for prior ischemic stroke. We performed a review of the published literature on the association between AF and cognitive status. Further, we reviewed studies investigating the underlying mechanisms for this association and/or reporting the impact of AF treatment on cognitive function. While most published studies demonstrate associations between AF and impaired cognition, no AF treatment has yet been associated with a reduced incidence of cognitive decline or dementia.
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Affiliation(s)
- Summer Aldrugh
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, USA
| | - Mayank Sardana
- Division of Cardiovascular Medicine, Department of Medicine, University of Massachusetts Medical School, Worcester, MA, USA
| | - Nils Henninger
- Department of Neurology, University of Massachusetts Medical School, Worcester, MA, USA.,Department of Psychiatry, University of Massachusetts Medical School, Worcester, MA, USA
| | - Jane S Saczynski
- Department of Pharmacy and Health System Sciences, Northeastern University, Boston, MA
| | - David D McManus
- Division of Cardiovascular Medicine, Department of Medicine, University of Massachusetts Medical School, Worcester, MA, USA
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119
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Nisticò R, Salter E, Nicolas C, Feligioni M, Mango D, Bortolotto ZA, Gressens P, Collingridge GL, Peineau S. Synaptoimmunology - roles in health and disease. Mol Brain 2017. [PMID: 28637489 PMCID: PMC5480158 DOI: 10.1186/s13041-017-0308-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Mounting evidence suggests that the nervous and immune systems are intricately linked. Many proteins first identified in the immune system have since been detected at synapses, playing different roles in normal and pathological situations. In addition, novel immunological functions are emerging for proteins typically expressed at synapses. Under normal conditions, release of inflammatory mediators generally represents an adaptive and regulated response of the brain to immune signals. On the other hand, when immune challenge becomes prolonged and/or uncontrolled, the consequent inflammatory response leads to maladaptive synaptic plasticity and brain disorders. In this review, we will first provide a summary of the cell signaling pathways in neurons and immune cells. We will then examine how immunological mechanisms might influence synaptic function, and in particular synaptic plasticity, in the healthy and pathological CNS. A better understanding of neuro-immune system interactions in brain circuitries relevant to neuropsychiatric and neurological disorders should provide specific biomarkers to measure the status of the neuroimmunological response and help design novel neuroimmune-targeted therapeutics.
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Affiliation(s)
- Robert Nisticò
- Department of Biology, University of Rome Tor Vergata, 00133, Rome, Italy. .,Pharmacology of Synaptic Disease Lab, European Brain Research Institute, 00143, Rome, Italy.
| | - Eric Salter
- Department of Physiology, University of Toronto, and Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada
| | - Celine Nicolas
- Centre for Synaptic Plasticity, School of Physiology, Pharmacology & Neuroscience, University of Bristol, Bristol, UK
| | - Marco Feligioni
- Pharmacology of Synaptic Disease Lab, European Brain Research Institute, 00143, Rome, Italy
| | - Dalila Mango
- Pharmacology of Synaptic Disease Lab, European Brain Research Institute, 00143, Rome, Italy
| | - Zuner A Bortolotto
- Centre for Synaptic Plasticity, School of Physiology, Pharmacology & Neuroscience, University of Bristol, Bristol, UK
| | - Pierre Gressens
- PROTECT, INSERM, Université Paris Diderot, Sorbonne Paris Cité, Paris, France.,Centre for the Developing Brain, King's College, St Thomas' Campus, London, UK
| | - Graham L Collingridge
- Department of Physiology, University of Toronto, and Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada.,Centre for Synaptic Plasticity, School of Physiology, Pharmacology & Neuroscience, University of Bristol, Bristol, UK
| | - Stephane Peineau
- Centre for Synaptic Plasticity, School of Physiology, Pharmacology & Neuroscience, University of Bristol, Bristol, UK. .,PROTECT, INSERM, Université Paris Diderot, Sorbonne Paris Cité, Paris, France. .,INSERM-ERi 24 (GRAP), Centre Universitaire de Recherche en Santé, Université de Picardie Jules Verne, Amiens, France.
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120
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Chupel MU, Direito F, Furtado GE, Minuzzi LG, Pedrosa FM, Colado JC, Ferreira JP, Filaire E, Teixeira AM. Strength Training Decreases Inflammation and Increases Cognition and Physical Fitness in Older Women with Cognitive Impairment. Front Physiol 2017; 8:377. [PMID: 28659812 PMCID: PMC5467003 DOI: 10.3389/fphys.2017.00377] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 05/22/2017] [Indexed: 12/19/2022] Open
Abstract
Introduction: Cognitive impairment that affects older adults is commonly associated with an inflammatory imbalance, resulting in decreased physical fitness. Exercise has been pointed to mitigate immunosenescence and cognitive impairment associated with aging, while increase in physical fitness. However, few studies explored the relationship between changes in cytokine concentration and improvement on cognition due to elastic band strength training. The aim of this study was to investigate the effects of strength training on pro-and anti-inflammatory cytokines, hematological markers and physical fitness of older women with cognitive impairment. Methods: Thirty-three women (82.7 ± 5.7 years old) participated in the study and were divided in two groups: strength exercise training group (ST; n = 16) and Control Group (CG; n = 17) and were evaluated before and after 28 weeks of the exercise program. The CG did not undergo any type of exercise programs. Data for IL-10, TNF-α, IFN-γ, C-Reactive Protein (CRP), white blood counts (WBC), red blood counts (RBC), Mini Mental State Examination (MMSE) and physical fitness tests were analyzed in both moments. Results: IL-10 increased in the ST group without changes in CG. TNF-α and CRP increased in the control group while no changes were observed for IFN-γ in both groups. Strength training decreased leukocyte and lymphocyte counts and increase hemoglobin, mean cell volume and mean cell hemoglobin concentration. The MMSE score increased in strength training group but remained unchanged in the control group. A correlation between the variation of granulocyte counts and the MMSE scores was also observed within the total sample. An improvement in physical fitness was observed with strength training. Conclusion: Resistance exercise promoted better anti-inflammatory balance and physical performance simultaneously with an increase in cognitive profile in older women with cognitive impairment.
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Affiliation(s)
- Matheus U Chupel
- Faculty of Sport Science and Physical Education, Research Center for Sport and Physical Activity, University of CoimbraCoimbra, Portugal
| | - Fábio Direito
- Faculty of Sport Science and Physical Education, Research Center for Sport and Physical Activity, University of CoimbraCoimbra, Portugal
| | - Guilherme E Furtado
- Faculty of Sport Science and Physical Education, Research Center for Sport and Physical Activity, University of CoimbraCoimbra, Portugal
| | - Luciéle G Minuzzi
- Faculty of Sport Science and Physical Education, Research Center for Sport and Physical Activity, University of CoimbraCoimbra, Portugal
| | - Filipa M Pedrosa
- Faculty of Sport Science and Physical Education, Research Center for Sport and Physical Activity, University of CoimbraCoimbra, Portugal
| | - Juan C Colado
- Research Group in Prevention and Health in Exercise and Sport, University of ValenciaValencia, Spain
| | - José P Ferreira
- Faculty of Sport Science and Physical Education, Research Center for Sport and Physical Activity, University of CoimbraCoimbra, Portugal
| | - Edith Filaire
- CIAMS, Université Paris-Sud, Université Paris-SaclayOrsay, France.,CIAMS, Université d'OrléansOrléans, France.,UMR 1019, INRA, Equipe ECREIN UNHClermont-Ferrand, France
| | - Ana M Teixeira
- Faculty of Sport Science and Physical Education, Research Center for Sport and Physical Activity, University of CoimbraCoimbra, Portugal
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121
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Lee YL, Hu HY, Huang LY, Chou P, Chu D. Periodontal Disease Associated with Higher Risk of Dementia: Population-Based Cohort Study in Taiwan. J Am Geriatr Soc 2017; 65:1975-1980. [DOI: 10.1111/jgs.14944] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Ya-Ling Lee
- Department of Dentistry; School of Dentistry, National Yang-Ming University; Taipei Taiwan
- Institute of Public Health and Community Medicine Research Center; National Yang-Ming University; Taipei Taiwan
- Department of Dentistry; Taipei City Hospital; Taipei Taiwan
| | - Hsiao-Yun Hu
- Institute of Public Health and Community Medicine Research Center; National Yang-Ming University; Taipei Taiwan
- Department of Education and Research; Taipei City Hospital; Taipei Taiwan
| | - Li-Ying Huang
- Institute of Public Health and Community Medicine Research Center; National Yang-Ming University; Taipei Taiwan
- Department of Community Medicine; Taipei City Hospital, Zhongxing Branch; Taipei Taiwan
| | - Pesus Chou
- Institute of Public Health and Community Medicine Research Center; National Yang-Ming University; Taipei Taiwan
| | - Dachen Chu
- Institute of Public Health and Community Medicine Research Center; National Yang-Ming University; Taipei Taiwan
- Faculty of Medicine; School of Medicine, National Yang-Ming University; Taipei Taiwan
- Department of Health Care Management; National Taipei University of Nursing and Health Sciences; Taipei Taiwan
- Department of Neurosurgery; Taipei City Hospital; Taipei Taiwan
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122
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Yoon CY, Steffen LM, Gross MD, Launer LJ, Odegaard A, Reiner A, Sanchez O, Yaffe K, Sidney S, Jacobs DR. Circulating Cellular Adhesion Molecules and Cognitive Function: The Coronary Artery Risk Development in Young Adults Study. Front Cardiovasc Med 2017; 4:37. [PMID: 28596958 PMCID: PMC5442165 DOI: 10.3389/fcvm.2017.00037] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Accepted: 05/05/2017] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE Higher circulating concentrations of cellular adhesion molecules (CAMs) can be used as markers of endothelial dysfunction. Given that the brain is highly vascularized, we assessed whether endothelial function is associated with cognitive performance. METHOD Within the Coronary Artery Risk Development in Young Adults (CARDIA) Study, excluding N = 54 with stroke before year 25, we studied CAMs among N = 2,690 black and white men and women in CARDIA year 7 (1992-1993, ages 25-37) and N = 2,848 in CARDIA year 15 (2000-2001, ages 33-45). We included subjects with levels of circulating soluble CAMs measured in year 7 or 15 and cognitive function testing in year 25 (2010-2011, ages 43-55). Using multiple regression analysis, we evaluated the association between CAMs and year 25 cognitive test scores: Rey Auditory Verbal Learning Test (RAVLT, memory), Digit Symbol Substitution Test (DSST, speed of processing), and the Stroop Test (executive function). RESULT All CAM concentrations were greater in year 15 vs. year 7. Adjusting for age, race, sex, education, smoking, alcohol, diet, physical activity, participants in the fourth vs. the first quartile of CARDIA year 7 of circulating intercellular adhesion molecule-1 (ICAM-1) scored worse on RAVLT, DSST, and Stroop Test (p ≤ 0.05) in CARDIA year 25. Other CAMs showed little association with cognitive test scores. Findings were similar for ICAM-1 assessed at year 15. Adjustment for possibly mediating physical factors attenuated the findings. CONCLUSION Higher circulating ICAM-1 at average ages 32 and 40 was associated with lower cognitive skills at average age 50. The study is consistent with the hypothesis that endothelial dysfunction is associated with worse short-term memory, speed of processing, and executive function.
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Affiliation(s)
- Cynthia Yursun Yoon
- Division of Epidemiology and Community Heath, University of Minnesota, Minneapolis, MN, USA
| | - Lyn M. Steffen
- Division of Epidemiology and Community Heath, University of Minnesota, Minneapolis, MN, USA
| | - Myron D. Gross
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, USA
| | - Lenore J. Launer
- Laboratory of Epidemiology, Demography, and Biometry, National Institute on Aging, Bethesda, MD, USA
| | - Andrew Odegaard
- Department of Epidemiology, University of California, Irvine, CA, USA
| | - Alexander Reiner
- Department of Epidemiology, University of Washington, Seattle, WA, USA
| | - Otto Sanchez
- Division of Renal Diseases and Hypertension, University of Minnesota, Minneapolis, MN, USA
| | - Kristine Yaffe
- Department of Psychiatry, University of California, San Francisco, CA, USA
| | - Stephen Sidney
- Division of Research, Kaiser Permanente Oakland, Oakland, CA, USA
| | - David R. Jacobs
- Division of Epidemiology and Community Heath, University of Minnesota, Minneapolis, MN, USA
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Fan YY, Cai QL, Gao ZY, Lin X, Huang Q, Tang W, Liu JH. APOE ε4 allele elevates the expressions of inflammatory factors and promotes Alzheimer's disease progression: A comparative study based on Han and She populations in the Wenzhou area. Brain Res Bull 2017; 132:39-43. [PMID: 28461186 DOI: 10.1016/j.brainresbull.2017.04.017] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 04/20/2017] [Accepted: 04/27/2017] [Indexed: 12/18/2022]
Abstract
OBJECTIVE This study aimed to investigate the impact of apolipoprotein E 4 (APOE4) gene polymorphisms on the expressions of inflammatory factors and the progression of Alzheimer's disease (AD). METHODS A total of 185 AD patients (the case group, 130 cases from the Han ethnic group and 55 cases from the She ethnic group) and 190 healthy individuals (the control group, 130 cases from the Han ethnic group and 60 cases from the She ethnic group) were recruited for our study. Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) was conducted to detect APOE4 genotype and allele frequency. Enzyme-linked immunosorbent assay (ELISA) was used to determine the expressions of inflammatory factors in plasma. RESULTS In both Han and She populations, the frequency of ε3/4 and ε4/4 genotypes and the ε4 allele was significantly higher in the case group than that in the control group. ε3/4 and ε4/4 genotypes and the ε4 allele were the risk factors for AD. In both Han and She populations, the ε2/4, ε3/4 and ε4/4 carriers showed increased levels of TNF-α, IL-6, and IL-1β when compared with the ε2/2 + ε2/3 + ε3/3 carriers. The TNF-α, IL-6, and IL-1β levels were higher in the ε4/4 carriers than those in the ε2/4 and ε3/4 carriers, and ε2/4, ε3/4 and ε4/4 carriers in the case group exhibited increased levels of TNF-α, IL-6, and IL-1β when compared with the control group (P<0.05). Logistic regression analysis indicated that the ε3/4 genotype and TNF-α, IL-6, and IL-1β levels were associated with the susceptibility to AD in the Han population, while ε3/4 and ε4/4 genotypes and TNF-α, IL-6, and IL-1β levels were related to the susceptibility to AD in the She population. CONCLUSIONS The APOE4 ε4 allele may enhance susceptibility to AD and promotes the expressions of inflammatory factors in AD.
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Affiliation(s)
- Yin-Ying Fan
- Psychiatry Department, Wenzhou Kangning Hospital, Wenzhou 325000, Zhejiang Province, PR China
| | - Qiao-Le Cai
- Psychiatry Department, Wenzhou Kangning Hospital, Wenzhou 325000, Zhejiang Province, PR China
| | - Zhi-Yong Gao
- Psychiatry Department, Wenzhou Kangning Hospital, Wenzhou 325000, Zhejiang Province, PR China
| | - Xue Lin
- Psychiatry Department, Wenzhou Kangning Hospital, Wenzhou 325000, Zhejiang Province, PR China
| | - Qi Huang
- Psychiatry Department, Wenzhou Kangning Hospital, Wenzhou 325000, Zhejiang Province, PR China
| | - Wei Tang
- Psychiatry Department, Wenzhou Kangning Hospital, Wenzhou 325000, Zhejiang Province, PR China
| | - Jia-Hong Liu
- Psychiatry Department, Wenzhou Kangning Hospital, Wenzhou 325000, Zhejiang Province, PR China.
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Kumar M, Kaur D, Bansal N. Caffeic Acid Phenethyl Ester (CAPE) Prevents Development of STZ-ICV Induced dementia in Rats. Pharmacogn Mag 2017; 13:S10-S15. [PMID: 28479719 PMCID: PMC5407100 DOI: 10.4103/0973-1296.203974] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2016] [Revised: 08/11/2016] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND Chronic oxidative stress and inflammation severely affect the normal physiology of neurons and lead to neurodegenerative disorders such as Alzheimer's disease (AD). Polyphenols proved a boon in the prevention of dementia due to their antioxidant and neuroprotective potential. Caffeic acid phenethyl ester (CAPE) is a natural polyphenolic compound attributed with antioxidant, immunomodulatory, and neuroprotective properties. OBJECTIVE The present study investigates the effect of CAPE on experimental dementia in rats. METHODS Intracerebroventricle (ICV) injection of streptozotocin (STZ; 3 mg/kg) was given to Wistar rats (200 g, either sex) on days 1 and 3 to induce dementia of AD type. CAPE (3 and 6 mg/kg, i.p.) was administered to separate groups of rats for 28 successive days daily. Morris water maze and elevated plus maze served as exteroceptive behavioral models to measure the memory of the rats. RESULTS The present study illustrated that CAPE treatment for 28 consecutive days arrested the development of cognitive deficits in STZ-ICV-treated rats, that is, a significant (P < 0.05) reduction in the mean escape latency during acquisition trial and increased (P < 0.05) time spent in target quadrant during retrieval trial in Morris water maze test and reduction (P < 0.05) in transfer latency in elevated plus maze test. Furthermore, both the doses of CAPE when administered to rats that were previously treated with STZ-ICV prevented the rise of brain thiobarbituric acid reactive substance as well as TNF-α and simultaneously enhanced the GSH content. CONCLUSION CAPE administration ameliorated STZ-ICV-induced dementia through the attenuation of oxidative stress and inflammation. SUMMARY Intracerebroventricular administration of streptozotocin (STZ-ICV) induced cognitive deficits, enhanced brain oxidative stress as well as inflammation in rats.Treatment with Caffeic Acid Phenethyl Ester (CAPE; dose 3 and 6 mg/kg, i.p.) for 28 days once daily, enhanced the memory and prevented the development of STZ-ICV-induced dementia in rats.The CAPE treated rats showed decrease in mean escape latency and increase in time spent in target quadrant in Morris Water Maze test. A decline in transfer latency of CAPE treated rats was observed in Elevated Plus Maze model.Profound rise in brain GSH levels and diminution of TBARS as well as TNF-α content was observed in brains of CAPE treated rats. Hence, the memory enhancing activity of CAPE against STZ-ICV-induced dementia is attributed to its robust antioxidant and anti-inflammatory property. Abbreviation used: AD: Alzheimer's disease, ANOVA: Analysis of Variance, aCSF: Artificial cerebrospinal fluid, CAPE: Caffeic acid phenethylester, EPM: Elevated plus maze, ELT: Escape latency time, GSH: Reduced glutathione, IL: Interleukin, ICV: Intracerebroventricular, MDA: Malondialdehyde, MEL: Mean escape latency, MWM: Morris water maze, NFTs: Neurofibrillary tangles, RNS: Reactive nitrogen species, ROS: Reactive oxygen species, SEM: Standard error of mean, STZ: Streptozotocin, TBARS: Thiobarbituric reactive substances, TSTQ: Time spent in target quadrant, TL: Transfer latency, TNF-α: Tumor necrosis factor alpha.
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Affiliation(s)
- Manish Kumar
- Department of Pharmacology, ASBASJSM College of Pharmacy, Bela, Ropar, India
| | - Devinder Kaur
- Department of Pharmacology, ASBASJSM College of Pharmacy, Bela, Ropar, India
| | - Nitin Bansal
- Department of Pharmacology, ASBASJSM College of Pharmacy, Bela, Ropar, India
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125
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Gandy S, Bartfai T, Lees GV, Sano M. Midlife interventions are critical in prevention, delay, or improvement of Alzheimer's disease and vascular cognitive impairment and dementia. F1000Res 2017; 6:413. [PMID: 28491285 PMCID: PMC5399952 DOI: 10.12688/f1000research.11140.1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/23/2017] [Indexed: 01/26/2023] Open
Abstract
The basic strategy for focusing exclusively on genetically identified targets for intervening in late life dementias was formulated 30 years ago. Three decades and billions of dollars later, all efforts at disease-modifying interventions have failed. Over that same period, evidence has accrued pointing to dementias as late-life clinical phenotypes that begin as midlife pathologies. Effective prevention therefore may need to begin in midlife, in order to succeed. No current interventions are sufficiently safe to justify their use in midlife dementia prevention trials. Observational studies could be informative in testing the proposal that amyloid imaging and
APOEε
4 genotype can predict those who are highly likely to develop Alzheimer’s disease and in whom higher risk interventions might be justifiable. A naturally occurring, diet-responsive cognitive decline syndrome occurs in canines that closely resembles human Alzheimer’s. Canine cognitive dysfunction could be useful in estimating how early intervention must begin in order to succeed. This model may also help identify and assess novel targets and strategies. New approaches to dementia prevention are urgently required, since none of the world’s economies can sustain the costs of caring for this epidemic of brain failure that is devastating half of the over 85-year-olds globally.
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Affiliation(s)
- Sam Gandy
- Department of Neurology and NFL Neurological Center, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA.,Department of Psychiatry and Alzheimer's Disease Research Center, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Tamas Bartfai
- Department of Neurochemistry, Stockholm University, Stockholm, 114 18, Sweden
| | | | - Mary Sano
- Department of Psychiatry and Alzheimer's Disease Research Center, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
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126
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Nezu A, Kubota T, Maruyama S, Nagata M, Nohno K, Morozumi T, Yoshie H. Expression of neprilysin in periodontitis-affected gingival tissues. Arch Oral Biol 2017; 79:35-41. [PMID: 28285126 DOI: 10.1016/j.archoralbio.2017.03.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 03/02/2017] [Accepted: 03/02/2017] [Indexed: 12/18/2022]
Abstract
OBJECTIVE Although the pathogeneses of Alzheimer's disease (AD) and periodontal diseases have overlapping features, including ageing and chronic inflammation, the association between AD and periodontitis remains unclear. To explore the pathogenesis of periodontitis, a comprehensive gene expression/transcriptome analysis in periodontitis-affected gingival tissues found that the AD pathway was significantly up-regulated in periodontitis-affected gingival tissues. AD-related genes, amyloid beta precursor protein (APP), interleukin-1 beta and compliment 1QA, were significantly elevated in periodontitis. In the present study, balance between mRNA expression of APP and a potent amyloid degradation enzyme, neprilysin (NEP), as well as protein localisation of APP and NEP were analysed. DESIGN Eighteen periodontitis-affected and 18 clinically healthy control gingival tissues were taken from patients with severe chronic periodontitis or undergoing tooth extraction. Total RNA was purified and used for quantitative reverse transcription real-time polymerase chain reaction (qRT-PCR). The localisation of APP and NEP was analysed by immunohistochemistry (IHC). RESULTS Both APP and NEP genes were up-regulated in periodontitis-affected gingival tissues. APP-expressing macrophages and NEP-expressing neutrophils and fibroblasts, reflecting inflammatory stages, were detected in inflamed gingival tissues by IHC. CONCLUSION The up-regulation of APP and NEP mRNA levels in periodontitis-affected gingival tissues compared with healthy controls was confirmed by qRT-PCR analyses. Since NEP is one of the primary enzymes that degrades amyloid beta, increased NEP mRNA levels in periodontitis may act as an inhibitor of amyloid beta accumulation in gingival tissues, balancing increased APP mRNA expression. However, NEP has several effects including degradation of vasoactive substances; therefore, further sresearch is needed.
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Affiliation(s)
- A Nezu
- Division of Periodontology, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences, Japan
| | - T Kubota
- Division of Periodontology, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences, Japan; Division of Periodontics, Department of Preventive and Conservative Dentistry, Niigata University Medical and Dental Hospital, Japan.
| | - S Maruyama
- Oral Pathology Section, Department of Surgical Pathology, Niigata University Medical and Dental Hospital, Japan
| | - M Nagata
- Division of Oral and Maxillofacial Surgery, Department of Health Science, Niigata University Graduate School of Medical and Dental Sciences, Japan
| | - K Nohno
- Division of Preventive Dentistry, Niigata University Graduate School of Medical and Dental Sciences, Japan
| | - T Morozumi
- Division of Periodontology, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences, Japan; Division of Periodontics, Department of Preventive and Conservative Dentistry, Niigata University Medical and Dental Hospital, Japan
| | - H Yoshie
- Division of Periodontology, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences, Japan; Division of Periodontics, Department of Preventive and Conservative Dentistry, Niigata University Medical and Dental Hospital, Japan
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127
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Demirci S, Aynalı A, Demirci K, Demirci S, Arıdoğan BC. The Serum Levels of Resistin and Its Relationship with Other Proinflammatory Cytokines in Patients with Alzheimer's Disease. CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE 2017; 15:59-63. [PMID: 28138112 PMCID: PMC5290717 DOI: 10.9758/cpn.2017.15.1.59] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Revised: 06/06/2016] [Accepted: 06/07/2016] [Indexed: 01/12/2023]
Abstract
Objective The present study aims to analyze the levels of resistin, tumor necrosis factor alpha (TNF-α), interleukin (IL)-1β, IL-6, IL-18, and C-reactive protein (CRP) in patients with Alzheimer's disease (AD) and also investigate a potential relationship between resistin levels and TNF-α, IL-1β, IL-6, IL-18, and CRP levels in patients with AD. Methods The study included fifty patients with AD and 30 healthy controls with normal cognitive functions. The serum resistin, TNF-α, IL-1β, IL-6, IL-18, and CRP levels were assessed. We performed a Mini-Mental State Examination (MMSE) to evaluate the general cognitive performance. Results The mean serum resistin, IL-1β, IL-18, and TNF-α levels were significantly higher in patients with AD compared with the controls (p=0.026, p=0.002, p=0.003, and p=0.038, respectively). The IL-6 and CRP levels did not differ between the groups (p=0.874 and p=0.941). The resistin levels were positively correlated with the levels of CRP and IL-18 (r=0.526, p<0.001; r=0.402, p=0.004, respectively). MMSE scores and inflammatory markers were not correlated (p>0.05 for all). Conclusion Serum resistin levels were significantly increased and correlated with some inflammatory markers in AD patients, suggesting that resistin might play a role in the inflammatory process of AD.
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Affiliation(s)
- Seden Demirci
- Department of Neurology, Faculty of Medicine, Süleyman Demirel University, Isparta, Turkey
| | - Ayşe Aynalı
- Department of Medical Microbiology, Faculty of Medicine, Süleyman Demirel University, Isparta, Turkey
| | - Kadir Demirci
- Department of Psychiatry, Faculty of Medicine, Süleyman Demirel University, Isparta, Turkey
| | - Serpil Demirci
- Department of Neurology, Faculty of Medicine, Süleyman Demirel University, Isparta, Turkey
| | - Buket Cicioğlu Arıdoğan
- Department of Medical Microbiology, Faculty of Medicine, Süleyman Demirel University, Isparta, Turkey
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128
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Zolezzi JM, Santos MJ, Bastías-Candia S, Pinto C, Godoy JA, Inestrosa NC. PPARs in the central nervous system: roles in neurodegeneration and neuroinflammation. Biol Rev Camb Philos Soc 2017; 92:2046-2069. [PMID: 28220655 DOI: 10.1111/brv.12320] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 12/21/2016] [Accepted: 01/11/2017] [Indexed: 12/20/2022]
Abstract
Over 25 years have passed since peroxisome proliferators-activated receptors (PPARs), were first described. Like other members of the nuclear receptors superfamily, PPARs have been defined as critical sensors and master regulators of cellular metabolism. Recognized as ligand-activated transcription factors, they are involved in lipid, glucose and amino acid metabolism, taking part in different cellular processes, including cellular differentiation and apoptosis, inflammatory modulation and attenuation of acute and chronic neurological damage in vivo and in vitro. Interestingly, PPAR activation can simultaneously reprogram the immune response, stimulate metabolic and mitochondrial functions, promote axonal growth, induce progenitor cells to differentiate into myelinating oligodendrocytes, and improve brain clearance of toxic molecules such as β-amyloid peptide. Although the molecular mechanisms and cross-talk with different molecular pathways are still the focus of intense research, PPARs are considered potential therapeutic targets for several neuropathological conditions, including degenerative disorders such as Alzheimer's, Parkinson's and Huntington's disease. This review considers recent advances regarding PPARs, as well as new PPAR agonists. We focus on the mechanisms behind the neuroprotective effects exerted by PPARs and summarise the roles of PPARs in different pathologies of the central nervous system, especially those associated with degenerative and inflammatory mechanisms.
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Affiliation(s)
- Juan M Zolezzi
- Centro de Envejecimiento y Regeneración (CARE-UC), P. Catholic University of Chile, PO Box 114-D, 8331150, Santiago, Chile
| | - Manuel J Santos
- Facultad de Ciencias Biológicas, Departamento de Biología Celular y Molecular, Pontificia Universidad Católica de Chile, Alameda 340, 8331150, Santiago, Chile
| | - Sussy Bastías-Candia
- Facultad de Ciencias, Departamento de Biología, Universidad de Tarapacá, Gral. Velásquez 1775, 1000007, Arica, Chile
| | - Claudio Pinto
- Centro de Envejecimiento y Regeneración (CARE-UC), P. Catholic University of Chile, PO Box 114-D, 8331150, Santiago, Chile
| | - Juan A Godoy
- Centro de Envejecimiento y Regeneración (CARE-UC), P. Catholic University of Chile, PO Box 114-D, 8331150, Santiago, Chile.,Facultad de Ciencias Biológicas, Departamento de Biología Celular y Molecular, Pontificia Universidad Católica de Chile, Alameda 340, 8331150, Santiago, Chile
| | - Nibaldo C Inestrosa
- Centro de Envejecimiento y Regeneración (CARE-UC), P. Catholic University of Chile, PO Box 114-D, 8331150, Santiago, Chile.,Facultad de Ciencias Biológicas, Departamento de Biología Celular y Molecular, Pontificia Universidad Católica de Chile, Alameda 340, 8331150, Santiago, Chile.,Faculty of Medicine, Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales, Avoca Street Randwick NSW 2031, Sydney, Australia.,Centro de Excelencia en Biomedicina de Magallanes (CEBIMA), Universidad de Magallanes, PO Box 113-D, Avenida Bulnes 01855, 6210427, Punta Arenas, Chile
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129
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Alkasir R, Li J, Li X, Jin M, Zhu B. Human gut microbiota: the links with dementia development. Protein Cell 2017; 8:90-102. [PMID: 27866330 PMCID: PMC5291774 DOI: 10.1007/s13238-016-0338-6] [Citation(s) in RCA: 170] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Accepted: 09/28/2016] [Indexed: 02/07/2023] Open
Abstract
Dementia is a comprehensive category of brain diseases that is great enough to affect a person's daily functioning. The most common type of dementia is Alzheimer's disease, which makes most of cases. New researches indicate that gastrointestinal tract microbiota are directly linked to dementia pathogenesis through triggering metabolic diseases and low-grade inflammation progress. A novel strategy is proposed for the management of these disorders and as an adjuvant for psychiatric treatment of dementia and other related diseases through modulation of the microbiota (e.g. with the use of probiotics).
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Affiliation(s)
- Rashad Alkasir
- Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Jing Li
- Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Xudong Li
- China-Japan Friendship Hospital, Beijing, 100029, China
| | - Miao Jin
- China-Japan Friendship Hospital, Beijing, 100029, China
| | - Baoli Zhu
- Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China.
- Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, The First Attainted Hospital College of Medicine, Zhejiang University, Hangzhou, 310058, China.
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130
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Metabolic Syndrome and the Cellular Phase of Alzheimer's Disease. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2017; 146:243-258. [DOI: 10.1016/bs.pmbts.2016.12.016] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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131
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Niraula A, Sheridan JF, Godbout JP. Microglia Priming with Aging and Stress. Neuropsychopharmacology 2017; 42:318-333. [PMID: 27604565 PMCID: PMC5143497 DOI: 10.1038/npp.2016.185] [Citation(s) in RCA: 243] [Impact Index Per Article: 34.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 08/22/2016] [Accepted: 08/25/2016] [Indexed: 01/08/2023]
Abstract
The population of aged individuals is increasing worldwide and this has significant health and socio-economic implications. Clinical and experimental studies on aging have discovered myriad changes in the brain, including reduced neurogenesis, increased synaptic aberrations, higher metabolic stress, and augmented inflammation. In rodent models of aging, these alterations are associated with cognitive decline, neurobehavioral deficits, and increased reactivity to immune challenges. In rodents, caloric restriction and young blood-induced revitalization reverses the behavioral effects of aging. The increased inflammation in the aged brain is attributed, in part, to the resident population of microglia. For example, microglia of the aged brain are marked by dystrophic morphology, elevated expression of inflammatory markers, and diminished expression of neuroprotective factors. Importantly, the heightened inflammatory profile of microglia in aging is associated with a 'sensitized' or 'primed' phenotype. Mounting evidence points to a causal link between the primed profile of the aged brain and vulnerability to secondary insults, including infections and psychological stress. Conversely, psychological stress may also induce aging-like sensitization of microglia and increase reactivity to secondary challenges. This review delves into the characteristics of neuroinflammatory signaling and microglial sensitization in aging, its implications in psychological stress, and interventions that reverse aging-associated deficits.
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Affiliation(s)
- Anzela Niraula
- Department of Neuroscience, The Ohio State University, Columbus, OH, USA,Institute for Behavioral Medicine Research, The Ohio State University, Columbus, OH, USA
| | - John F Sheridan
- Institute for Behavioral Medicine Research, The Ohio State University, Columbus, OH, USA,Division of Biosciences, The Ohio State University, College of Dentistry, Columbus, OH, USA
| | - Jonathan P Godbout
- Department of Neuroscience, The Ohio State University, Columbus, OH, USA,Institute for Behavioral Medicine Research, The Ohio State University, Columbus, OH, USA,Center for Brain and Spinal Cord Repair, The Ohio State University, Columbus, OH, USA,Department of Neuroscience, The Ohio State University, 231 IBMR Bld, 460 Medical Center Drive Columbus, OH 43210, USA, Tel: +614 293 3456, Fax: +614 366 2097, E-mail:
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132
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Ardura-Fabregat A, Boddeke EWGM, Boza-Serrano A, Brioschi S, Castro-Gomez S, Ceyzériat K, Dansokho C, Dierkes T, Gelders G, Heneka MT, Hoeijmakers L, Hoffmann A, Iaccarino L, Jahnert S, Kuhbandner K, Landreth G, Lonnemann N, Löschmann PA, McManus RM, Paulus A, Reemst K, Sanchez-Caro JM, Tiberi A, Van der Perren A, Vautheny A, Venegas C, Webers A, Weydt P, Wijasa TS, Xiang X, Yang Y. Targeting Neuroinflammation to Treat Alzheimer's Disease. CNS Drugs 2017; 31:1057-1082. [PMID: 29260466 PMCID: PMC5747579 DOI: 10.1007/s40263-017-0483-3] [Citation(s) in RCA: 150] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Over the past few decades, research on Alzheimer's disease (AD) has focused on pathomechanisms linked to two of the major pathological hallmarks of extracellular deposition of beta-amyloid peptides and intra-neuronal formation of neurofibrils. Recently, a third disease component, the neuroinflammatory reaction mediated by cerebral innate immune cells, has entered the spotlight, prompted by findings from genetic, pre-clinical, and clinical studies. Various proteins that arise during neurodegeneration, including beta-amyloid, tau, heat shock proteins, and chromogranin, among others, act as danger-associated molecular patterns, that-upon engagement of pattern recognition receptors-induce inflammatory signaling pathways and ultimately lead to the production and release of immune mediators. These may have beneficial effects but ultimately compromise neuronal function and cause cell death. The current review, assembled by participants of the Chiclana Summer School on Neuroinflammation 2016, provides an overview of our current understanding of AD-related immune processes. We describe the principal cellular and molecular players in inflammation as they pertain to AD, examine modifying factors, and discuss potential future therapeutic targets.
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Affiliation(s)
- A. Ardura-Fabregat
- grid.5963.9Faculty of Medicine, Institute of Neuropathology, University of Freiburg, Freiburg, Germany
| | - E. W. G. M. Boddeke
- 0000 0004 0407 1981grid.4830.fDepartment of Neuroscience, Section Medical Physiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - A. Boza-Serrano
- 0000 0001 0930 2361grid.4514.4Experimental Neuroinflammation Laboratory, Department of Experimental Medical Sciences, Biomedical Centrum (BMC), Lund University, Lund, Sweden
| | - S. Brioschi
- grid.5963.9Department of Psychiatry and Psychotherapy, Medical Center University of Freiburg, Faculty of Medicine University of Freiburg, Freiburg, Germany
| | - S. Castro-Gomez
- 0000 0000 8786 803Xgrid.15090.3dDepartment of Neurodegenerative Disease and Gerontopsychiatry/Neurology, University of Bonn Medical Center, Sigmund-Freud Str. 25, 53127 Bonn, Germany
| | - K. Ceyzériat
- grid.457334.2Commissariat à l’Energie Atomique et aux Energies Alternatives (CEA), Département de la Recherche Fondamentale (DRF), Institut de biologie François Jacob, MIRCen, 92260 Fontenay-aux-Roses, France ,0000 0001 2171 2558grid.5842.bNeurodegenerative Diseases Laboratory, Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud, UMR 9199, F-92260 Fontenay-aux-Roses, France
| | - C. Dansokho
- 0000 0004 0438 0426grid.424247.3German Center for Neurodegenerative Diseases (DZNE), Sigmund Freud Str. 27, 53127 Bonn, Germany
| | - T. Dierkes
- 0000 0004 0438 0426grid.424247.3German Center for Neurodegenerative Diseases (DZNE), Sigmund Freud Str. 27, 53127 Bonn, Germany ,0000 0000 8786 803Xgrid.15090.3dBiomedical Centre, Institute of Innate Immunity, University Hospital Bonn, Sigmund-Freud-Str. 25, 53127 Bonn, Germany
| | - G. Gelders
- 0000 0001 0668 7884grid.5596.fDepartment of Neurosciences, Laboratory for Neurobiology and Gene Therapy, KU Leuven, Leuven, Belgium
| | - Michael T. Heneka
- 0000 0004 0438 0426grid.424247.3German Center for Neurodegenerative Diseases (DZNE), Sigmund Freud Str. 27, 53127 Bonn, Germany ,0000 0000 8786 803Xgrid.15090.3dDepartment of Neurodegenerative Disease and Gerontopsychiatry/Neurology, University of Bonn Medical Center, Sigmund-Freud Str. 25, 53127 Bonn, Germany
| | - L. Hoeijmakers
- 0000000084992262grid.7177.6Center for Neuroscience (SILS-CNS), Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, The Netherlands
| | - A. Hoffmann
- Department of Molecular Neurology, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - L. Iaccarino
- grid.15496.3fVita-Salute San Raffaele University, Milan, Italy ,0000000417581884grid.18887.3eIn Vivo Human Molecular and Structural Neuroimaging Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - S. Jahnert
- 0000 0000 8786 803Xgrid.15090.3dDepartment of Neurodegenerative Disease and Gerontopsychiatry/Neurology, University of Bonn Medical Center, Sigmund-Freud Str. 25, 53127 Bonn, Germany
| | - K. Kuhbandner
- Department of Neurology, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - G. Landreth
- 0000 0001 2287 3919grid.257413.6Stark Neuroscience Research Institute, Indiana University School of Medicine, Indianapolis, IN 46202 USA
| | - N. Lonnemann
- 0000 0001 1090 0254grid.6738.aDepartment of Cellular Neurobiology, Zoological Institute, Technische Universität Braunschweig, Braunschweig, Germany
| | | | - R. M. McManus
- 0000 0004 0438 0426grid.424247.3German Center for Neurodegenerative Diseases (DZNE), Sigmund Freud Str. 27, 53127 Bonn, Germany
| | - A. Paulus
- 0000 0001 0930 2361grid.4514.4Experimental Neuroinflammation Laboratory, Department of Experimental Medical Sciences, Biomedical Centrum (BMC), Lund University, Lund, Sweden
| | - K. Reemst
- 0000000084992262grid.7177.6Center for Neuroscience (SILS-CNS), Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, The Netherlands
| | - J. M. Sanchez-Caro
- 0000 0004 0438 0426grid.424247.3German Center for Neurodegenerative Diseases (DZNE), Sigmund Freud Str. 27, 53127 Bonn, Germany
| | - A. Tiberi
- grid.6093.cBio@SNS Laboratory, Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126 Pisa, Italy
| | - A. Van der Perren
- 0000 0001 0668 7884grid.5596.fDepartment of Neurosciences, Laboratory for Neurobiology and Gene Therapy, KU Leuven, Leuven, Belgium
| | - A. Vautheny
- grid.457334.2Commissariat à l’Energie Atomique et aux Energies Alternatives (CEA), Département de la Recherche Fondamentale (DRF), Institut de biologie François Jacob, MIRCen, 92260 Fontenay-aux-Roses, France ,0000 0001 2171 2558grid.5842.bNeurodegenerative Diseases Laboratory, Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud, UMR 9199, F-92260 Fontenay-aux-Roses, France
| | - C. Venegas
- 0000 0000 8786 803Xgrid.15090.3dDepartment of Neurodegenerative Disease and Gerontopsychiatry/Neurology, University of Bonn Medical Center, Sigmund-Freud Str. 25, 53127 Bonn, Germany
| | - A. Webers
- 0000 0000 8786 803Xgrid.15090.3dDepartment of Neurodegenerative Disease and Gerontopsychiatry/Neurology, University of Bonn Medical Center, Sigmund-Freud Str. 25, 53127 Bonn, Germany
| | - P. Weydt
- 0000 0000 8786 803Xgrid.15090.3dDepartment of Neurodegenerative Disease and Gerontopsychiatry/Neurology, University of Bonn Medical Center, Sigmund-Freud Str. 25, 53127 Bonn, Germany
| | - T. S. Wijasa
- 0000 0004 0438 0426grid.424247.3German Center for Neurodegenerative Diseases (DZNE), Sigmund Freud Str. 27, 53127 Bonn, Germany
| | - X. Xiang
- 0000 0004 1936 973Xgrid.5252.0Biomedical Center (BMC), Biochemistry, Ludwig-Maximilians-University Munich, 81377 Munich, Germany ,0000 0004 1936 973Xgrid.5252.0Graduate School of Systemic Neuroscience, Ludwig-Maximilians-University, Munich, 82152 Munich, Germany
| | - Y. Yang
- 0000 0001 0930 2361grid.4514.4Experimental Neuroinflammation Laboratory, Department of Experimental Medical Sciences, Biomedical Centrum (BMC), Lund University, Lund, Sweden
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Cobianchi S, Arbat-Plana A, López-Álvarez VM, Navarro X. Neuroprotective Effects of Exercise Treatments After Injury: The Dual Role of Neurotrophic Factors. Curr Neuropharmacol 2017; 15:495-518. [PMID: 27026050 PMCID: PMC5543672 DOI: 10.2174/1570159x14666160330105132] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 02/19/2016] [Accepted: 03/03/2016] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Shared connections between physical activity and neuroprotection have been studied for decades, but the mechanisms underlying this effect of specific exercise were only recently brought to light. Several evidences suggest that physical activity may be a reasonable and beneficial method to improve functional recovery in both peripheral and central nerve injuries and to delay functional decay in neurodegenerative diseases. In addition to improving cardiac and immune functions, physical activity may represent a multifunctional approach not only to improve cardiocirculatory and immune functions, but potentially modulating trophic factors signaling and, in turn, neuronal function and structure at times that may be critical for neurodegeneration and regeneration. METHODS Research content related to the effects of physical activity and specific exercise programs in normal and injured nervous system have been reviewed. RESULTS Sustained exercise, particularly if applied at moderate intensity and early after injury, exerts anti-inflammatory and pro-regenerative effects, and may boost cognitive and motor functions in aging and neurological disorders. However, newest studies show that exercise modalities can differently affect the production and function of brain-derived neurotrophic factor and other neurotrophins involved in the generation of neuropathic conditions. These findings suggest the possibility that new exercise strategies can be directed to nerve injuries with therapeutical benefits. CONCLUSION Considering the growing burden of illness worldwide, understanding of how modulation of neurotrophic factors contributes to exercise-induced neuroprotection and regeneration after peripheral nerve and spinal cord injuries is a relevant topic for research, and represents the beginning of a new non-pharmacological therapeutic approach for better rehabilitation of neural disorders.
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Affiliation(s)
- Stefano Cobianchi
- Department of Cell Biology, Physiology and Immunology, Institute of Neurosciences, Universitat Autonoma de Barcelona, Bellaterra, Spain
- Centro de Investigacion Biomedica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Bellaterra, Spain
| | - Ariadna Arbat-Plana
- Department of Cell Biology, Physiology and Immunology, Institute of Neurosciences, Universitat Autonoma de Barcelona, Bellaterra, Spain
- Centro de Investigacion Biomedica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Bellaterra, Spain
| | - Víctor M. López-Álvarez
- Department of Cell Biology, Physiology and Immunology, Institute of Neurosciences, Universitat Autonoma de Barcelona, Bellaterra, Spain
- Centro de Investigacion Biomedica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Bellaterra, Spain
| | - Xavier Navarro
- Department of Cell Biology, Physiology and Immunology, Institute of Neurosciences, Universitat Autonoma de Barcelona, Bellaterra, Spain
- Centro de Investigacion Biomedica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Bellaterra, Spain
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Alfano CM, Peng J, Andridge RR, Lindgren ME, Povoski SP, Lipari AM, Agnese DM, Farrar WB, Yee LD, Carson WE, Kiecolt-Glaser JK. Inflammatory Cytokines and Comorbidity Development in Breast Cancer Survivors Versus Noncancer Controls: Evidence for Accelerated Aging? J Clin Oncol 2016; 35:149-156. [PMID: 27893337 DOI: 10.1200/jco.2016.67.1883] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Purpose The sequelae of cancer treatment may increase systemic inflammation and create a phenotype at increased risk of functional decline and comorbidities, leading to premature mortality. Little is known about how this trajectory compares with natural aging among peers of the same age without cancer. This longitudinal study investigated proinflammatory cytokines and comorbidity development over time among breast cancer survivors and a noncancer control group. Methods Women (N = 315; 209 with breast cancer and 106 in the control group) were recruited at the time of their work-up for breast cancer; they completed the baseline questionnaire, interview, and blood draw (lipopolysaccharide-stimulated production of interleukin [IL] -6, tumor necrosis factor-α, and IL-1β). Measures were repeated 6 and 18 months after primary cancer treatment (cancer survivors) or within a comparable time frame (control group). Results There were no baseline differences in comorbidities or cytokines between survivors and the control group. Over time, breast cancer survivors had significantly higher tumor necrosis factor-α and IL-6 compared with the control group. Survivors treated with surgery, radiation, and chemotherapy accumulated a significantly greater burden of comorbid conditions and suffered greater pain associated with inflammation over time after cancer treatment than did the control group. Conclusion Survivors who had multimodal treatment had higher cytokines and comorbidities, suggestive of accelerated aging. Comorbidities were related to inflammation in this sample, which could increase the likelihood of premature mortality. Given that many comorbidities take years to develop, future research with extended follow-up beyond 18 months is necessary to examine the evidence of accelerated aging in cancer survivors and to determine the responsible mechanisms.
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Affiliation(s)
- Catherine M Alfano
- Catherine M. Alfano, American Cancer Society, Washington, DC; Juan Peng, Monica E. Lindgren, Stephen P. Povoski, Adele M. Lipari, Doreen M. Agnese, William B. Farrar, Lisa D. Yee, William E. Carson III, Janice K. Kiecolt-Glaser, The Ohio State University College of Medicine; Rebecca R. Andridge, The Ohio State University College of Public Health; and Monica E. Lindgren, Stephen P. Povoski, Adele M. Lipari, Doreen M. Agnese, William B. Farrar, Lisa D. Yee, William E. Carson III, and Janice K. Kiecolt-Glaser, The Ohio State University, Columbus, OH
| | - Juan Peng
- Catherine M. Alfano, American Cancer Society, Washington, DC; Juan Peng, Monica E. Lindgren, Stephen P. Povoski, Adele M. Lipari, Doreen M. Agnese, William B. Farrar, Lisa D. Yee, William E. Carson III, Janice K. Kiecolt-Glaser, The Ohio State University College of Medicine; Rebecca R. Andridge, The Ohio State University College of Public Health; and Monica E. Lindgren, Stephen P. Povoski, Adele M. Lipari, Doreen M. Agnese, William B. Farrar, Lisa D. Yee, William E. Carson III, and Janice K. Kiecolt-Glaser, The Ohio State University, Columbus, OH
| | - Rebecca R Andridge
- Catherine M. Alfano, American Cancer Society, Washington, DC; Juan Peng, Monica E. Lindgren, Stephen P. Povoski, Adele M. Lipari, Doreen M. Agnese, William B. Farrar, Lisa D. Yee, William E. Carson III, Janice K. Kiecolt-Glaser, The Ohio State University College of Medicine; Rebecca R. Andridge, The Ohio State University College of Public Health; and Monica E. Lindgren, Stephen P. Povoski, Adele M. Lipari, Doreen M. Agnese, William B. Farrar, Lisa D. Yee, William E. Carson III, and Janice K. Kiecolt-Glaser, The Ohio State University, Columbus, OH
| | - Monica E Lindgren
- Catherine M. Alfano, American Cancer Society, Washington, DC; Juan Peng, Monica E. Lindgren, Stephen P. Povoski, Adele M. Lipari, Doreen M. Agnese, William B. Farrar, Lisa D. Yee, William E. Carson III, Janice K. Kiecolt-Glaser, The Ohio State University College of Medicine; Rebecca R. Andridge, The Ohio State University College of Public Health; and Monica E. Lindgren, Stephen P. Povoski, Adele M. Lipari, Doreen M. Agnese, William B. Farrar, Lisa D. Yee, William E. Carson III, and Janice K. Kiecolt-Glaser, The Ohio State University, Columbus, OH
| | - Stephen P Povoski
- Catherine M. Alfano, American Cancer Society, Washington, DC; Juan Peng, Monica E. Lindgren, Stephen P. Povoski, Adele M. Lipari, Doreen M. Agnese, William B. Farrar, Lisa D. Yee, William E. Carson III, Janice K. Kiecolt-Glaser, The Ohio State University College of Medicine; Rebecca R. Andridge, The Ohio State University College of Public Health; and Monica E. Lindgren, Stephen P. Povoski, Adele M. Lipari, Doreen M. Agnese, William B. Farrar, Lisa D. Yee, William E. Carson III, and Janice K. Kiecolt-Glaser, The Ohio State University, Columbus, OH
| | - Adele M Lipari
- Catherine M. Alfano, American Cancer Society, Washington, DC; Juan Peng, Monica E. Lindgren, Stephen P. Povoski, Adele M. Lipari, Doreen M. Agnese, William B. Farrar, Lisa D. Yee, William E. Carson III, Janice K. Kiecolt-Glaser, The Ohio State University College of Medicine; Rebecca R. Andridge, The Ohio State University College of Public Health; and Monica E. Lindgren, Stephen P. Povoski, Adele M. Lipari, Doreen M. Agnese, William B. Farrar, Lisa D. Yee, William E. Carson III, and Janice K. Kiecolt-Glaser, The Ohio State University, Columbus, OH
| | - Doreen M Agnese
- Catherine M. Alfano, American Cancer Society, Washington, DC; Juan Peng, Monica E. Lindgren, Stephen P. Povoski, Adele M. Lipari, Doreen M. Agnese, William B. Farrar, Lisa D. Yee, William E. Carson III, Janice K. Kiecolt-Glaser, The Ohio State University College of Medicine; Rebecca R. Andridge, The Ohio State University College of Public Health; and Monica E. Lindgren, Stephen P. Povoski, Adele M. Lipari, Doreen M. Agnese, William B. Farrar, Lisa D. Yee, William E. Carson III, and Janice K. Kiecolt-Glaser, The Ohio State University, Columbus, OH
| | - William B Farrar
- Catherine M. Alfano, American Cancer Society, Washington, DC; Juan Peng, Monica E. Lindgren, Stephen P. Povoski, Adele M. Lipari, Doreen M. Agnese, William B. Farrar, Lisa D. Yee, William E. Carson III, Janice K. Kiecolt-Glaser, The Ohio State University College of Medicine; Rebecca R. Andridge, The Ohio State University College of Public Health; and Monica E. Lindgren, Stephen P. Povoski, Adele M. Lipari, Doreen M. Agnese, William B. Farrar, Lisa D. Yee, William E. Carson III, and Janice K. Kiecolt-Glaser, The Ohio State University, Columbus, OH
| | - Lisa D Yee
- Catherine M. Alfano, American Cancer Society, Washington, DC; Juan Peng, Monica E. Lindgren, Stephen P. Povoski, Adele M. Lipari, Doreen M. Agnese, William B. Farrar, Lisa D. Yee, William E. Carson III, Janice K. Kiecolt-Glaser, The Ohio State University College of Medicine; Rebecca R. Andridge, The Ohio State University College of Public Health; and Monica E. Lindgren, Stephen P. Povoski, Adele M. Lipari, Doreen M. Agnese, William B. Farrar, Lisa D. Yee, William E. Carson III, and Janice K. Kiecolt-Glaser, The Ohio State University, Columbus, OH
| | - William E Carson
- Catherine M. Alfano, American Cancer Society, Washington, DC; Juan Peng, Monica E. Lindgren, Stephen P. Povoski, Adele M. Lipari, Doreen M. Agnese, William B. Farrar, Lisa D. Yee, William E. Carson III, Janice K. Kiecolt-Glaser, The Ohio State University College of Medicine; Rebecca R. Andridge, The Ohio State University College of Public Health; and Monica E. Lindgren, Stephen P. Povoski, Adele M. Lipari, Doreen M. Agnese, William B. Farrar, Lisa D. Yee, William E. Carson III, and Janice K. Kiecolt-Glaser, The Ohio State University, Columbus, OH
| | - Janice K Kiecolt-Glaser
- Catherine M. Alfano, American Cancer Society, Washington, DC; Juan Peng, Monica E. Lindgren, Stephen P. Povoski, Adele M. Lipari, Doreen M. Agnese, William B. Farrar, Lisa D. Yee, William E. Carson III, Janice K. Kiecolt-Glaser, The Ohio State University College of Medicine; Rebecca R. Andridge, The Ohio State University College of Public Health; and Monica E. Lindgren, Stephen P. Povoski, Adele M. Lipari, Doreen M. Agnese, William B. Farrar, Lisa D. Yee, William E. Carson III, and Janice K. Kiecolt-Glaser, The Ohio State University, Columbus, OH
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Li Z, Ni C, Xia C, Jaw J, Wang Y, Cao Y, Xu M, Guo X. Calcineurin/nuclear factor-κB signaling mediates isoflurane-induced hippocampal neuroinflammation and subsequent cognitive impairment in aged rats. Mol Med Rep 2016; 15:201-209. [PMID: 27909728 PMCID: PMC5355741 DOI: 10.3892/mmr.2016.5967] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Accepted: 10/24/2016] [Indexed: 12/23/2022] Open
Abstract
It is known that inhaled anesthetics induce neuroinflammation and facilitate postoperative cognitive dysfunction (POCD) in aged individuals; however, the mechanisms by which they mediate these effects remain elusive. Inhalation of the isoflurane anesthetic leads to opening of the mitochondrial permeability transition pore and loss of mitochondrial membrane potential. Therefore, mitochondrial retrograde signaling, which is an adaptive mechanism that facilitates the transmission of signals from dysfunctional mitochondria to the nucleus to activate target gene expression, may be activated during isoflurane inhalation. Therefore, the present study was designed to investigate the role of mitochondrial retrograde signaling in isoflurane-induced hippocampal neuroinflammation and cognitive impairment in aged rats. As calcineurin (CaN) serves an important role in the initiation of mitochondrial retrograde signaling, and nuclear factor-κB (NF‑κB) is involved in CaN signaling, their effects on isoflurane‑induced hippocampal neuroinflammation and cognitive impairment were investigated. Reactive oxygen species and mitochondrial membrane potential fluorescence staining, western blotting, colorimetric analysis, ELISA, immunofluorescence and the Morris water maze test were used in the present study. The results indicate that isoflurane induced hippocampal mitochondrial dysfunction and activated CaN, which subsequently lead to the putative activation of NF‑κB. These resulted in the elevation of interleukin‑1β (IL‑1β) expression (a typical marker of neuroinflammation), and was associated with cognitive impairment in aged rats. In addition, CaN and NF‑κB inhibition attenuated isoflurane-induced neuroinflammation and subsequent cognitive impairment. In conclusion, the results of the present study demonstrate the role of mitochondrial retrograde signaling and associated protein factors in inhaled anesthetic-induced neuroinflammation and cognitive impairment. These protein factors may therefore present promising therapeutic targets for the prevention of POCD.
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Affiliation(s)
- Zhengqian Li
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, P.R. China
| | - Cheng Ni
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, P.R. China
| | - Chun Xia
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, P.R. China
| | - Joey Jaw
- Department of General Surgery, Peking University Third Hospital, Beijing 100191, P.R. China
| | - Yujie Wang
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, P.R. China
| | - Yiyun Cao
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, P.R. China
| | - Mao Xu
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, P.R. China
| | - Xiangyang Guo
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, P.R. China
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Abstract
Dementia is a comprehensive category of brain diseases that is great enough to affect a person's daily functioning. The most common type of dementia is Alzheimer's disease, which makes most of cases. New researches indicate that gastrointestinal tract microbiota are directly linked to dementia pathogenesis through triggering metabolic diseases and low-grade inflammation progress. A novel strategy is proposed for the management of these disorders and as an adjuvant for psychiatric treatment of dementia and other related diseases through modulation of the microbiota (e.g. with the use of probiotics).
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Affiliation(s)
- Rashad Alkasir
- Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Jing Li
- Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Xudong Li
- China-Japan Friendship Hospital, Beijing, 100029, China
| | - Miao Jin
- China-Japan Friendship Hospital, Beijing, 100029, China
| | - Baoli Zhu
- Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China.
- Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases, The First Attainted Hospital College of Medicine, Zhejiang University, Hangzhou, 310058, China.
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Mohammadzadeh Honarvar N, Saedisomeolia A, Abdolahi M, Shayeganrad A, Taheri Sangsari G, Hassanzadeh Rad B, Muench G. Molecular Anti-inflammatory Mechanisms of Retinoids and Carotenoids in Alzheimer's Disease: a Review of Current Evidence. J Mol Neurosci 2016; 61:289-304. [PMID: 27864661 DOI: 10.1007/s12031-016-0857-x] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2016] [Accepted: 10/21/2016] [Indexed: 12/20/2022]
Abstract
Alzheimer's disease (AD) is considered as one of the most prevalent neurodegenerative disorders characterized by progressive loss of mental function and ability to learn. AD is a multifactorial disorder. Various hypotheses are suggested for the pathophysiology of AD including "Aβ hypothesis," "tau hypothesis," and "cholinergic hypothesis." Recently, it has been demonstrated that neuroinflammation is involved in the pathogenesis of AD. Neuroinflammation causes synaptic dysfunction and neuronal death within the brain. Excessive production of pro-inflammatory mediators induces Aβ peptide production/accumulation and hyperphosphorylated tau generating inflammatory molecules and cytokines. These inflammatory molecules disrupt blood-brain barrier integrity and increase the production of Aβ42 oligomers. Retinoids and carotenoids are potent antioxidants and anti-inflammatory agents having neuroprotective properties. They are able to prevent disease progression through several mechanisms such as suppression of Aβ peptide production/accumulation, oxidative stress, and pro-inflammatory mediator's secretion as well as improvement of cognitive performance. These observations, therefore, confirm the neuroprotective role of retinoids and carotenoids through multiple pathways. Therefore, the administration of these nutrients is considered as a promising approach to the prevention and/or treatment of AD in the future. The aim of this review is to present existing evidences regarding the beneficial effects of retinoids and carotenoids on AD's risk and outcomes, seeking the mechanism of their action.
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Affiliation(s)
- Niyaz Mohammadzadeh Honarvar
- Department of Cellular and Molecular Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Ahmad Saedisomeolia
- Department of Cellular and Molecular Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran. .,Department of Pharmacology, School of Medicine, Western Sydney University, NSW, Australia. .,School of Molecular Bioscience, Charles Perkins Centre, University of Sydney, NSW, Australia.
| | - Mina Abdolahi
- Department of Cellular and Molecular Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Amir Shayeganrad
- Department of Cellular and Molecular Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | | | | | - Gerald Muench
- Department of Pharmacology, School of Medicine, Western Sydney University, NSW, Australia
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Abstract
Introduction Chronic kidney disease (CKD) is associated with an increased risk of cognitive decline, but the mechanisms remain poorly defined. We sought to determine the relation between serum inflammatory markers and risk of cognitive decline among adults with CKD. Methods We studied 757 adults aged ≥55 years with CKD participating in the Chronic Renal Insufficiency Cohort Cognitive study. We measured interleukin (IL)−1β, IL-1 receptor antagonist, IL-6, tumor necrosis factor (TNF)−α, high-sensitivity C-reactive protein (hs-CRP), and fibrinogen in baseline plasma samples. We assessed cognitive function at regular intervals in 4 domains and defined incident impairment as a follow-up score more than 1 SD poorer than the group mean. Results The mean age of the sample was 64.3 ± 5.6 years, and the mean follow-up was 6.2 ± 2.5 years. At baseline, higher levels of each inflammatory marker were associated with poorer age-adjusted performance. In analyses adjusted for baseline cognition, demographics, comorbid conditions, and kidney function, participants in the highest tertile of hs-CRP, the highest tertile of fibrinogen, and the highest tertile of IL-1β had an increased risk of impairment in attention compared to participants in the lowest tertile of each marker. Participants in the highest versus lowest tertile of TNF-α had a lower adjusted risk of impairment in executive function. There was no association between other inflammatory markers and change in cognitive function. Discussion Among adults with CKD, higher levels of hs-CRP, fibrinogen, and IL-1β were associated with a higher risk of impairment in attention. Higher levels of TNF-α were associated with a lower risk of impaired executive function.
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Schmidt MF, Freeman KB, Windham BG, Griswold ME, Kullo IJ, Turner ST, Mosley TH. Associations Between Serum Inflammatory Markers and Hippocampal Volume in a Community Sample. J Am Geriatr Soc 2016; 64:1823-9. [PMID: 27549073 DOI: 10.1111/jgs.14283] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
OBJECTIVES To quantify associations between inflammatory biomarkers and hippocampal volume (HV) and to examine effect modification according to sex, race, and age. DESIGN Cross-sectional analyses using generalized estimating equations to account for familial clustering; standardized β-coefficients adjusted for age, sex, race, and education. SETTING Community cohorts in Jackson, Mississippi and Rochester, Minnesota. PARTICIPANTS The Genetic Epidemiology Network of Arteriopathy study. MEASUREMENTS C-reactive protein (CRP), interleukin-6 (IL-6), and soluble tumor necrosis factor receptors 1 (sTNFR-1) and 2 (sTNFR-2) from peripheral blood were measured in a sample of 773 non-Hispanic whites (61% women, aged 60.2 ± 9.8) and 514 African Americans (70% women, aged 63.9 ± 8.1) who also underwent brain magnetic resonance imaging. Biomarkers were standardized and compared according to sex, race and age with HV. RESULTS In the full sample, higher sTNFR-1 and sTNFR-2 were associated with smaller HV. Each standard deviation (SD) increase in sTNFR-1 was associated with 59.1 mm(3) (95% confidence interval (CI) = -101.4 to -16.7 mm(3) ) smaller HV and each SD increase in sTNFR-2 associated with 48.8 mm(3) (95% CI = -92.2 to -5.3 mm(3) ) smaller HV. Relationships were stronger for sTNFR-2 in men (HV = -116.6 mm(3) for each SD increase, 95% CI = -201.0 to -32.1) than women (HV = -26.0 per SD increase, 95% CI = -72.4-20.5) and sTNFR-1 in non-Hispanic whites (HV = -84.7 mm(3) per SD increase, 95% CI = -142.2 to -27.1) than African Americans (HV = -14.1 mm(3) per SD increase, 95% CI = -78.3-50.1). Associations between IL-6 or CRP and HV were not supported. CONCLUSION Higher levels of sTNFRs were associated cross-sectionally with smaller hippocampi. Longitudinal data are needed to determine whether these biomarkers may help to identify risk of late-life cognitive impairment.
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Affiliation(s)
- Mike F Schmidt
- Program in Neuroscience, University of Mississippi Medical Center, Jackson, Mississippi.,Department of Medicine, University of Mississippi Medical Center, Jackson, Mississippi
| | - Kevin B Freeman
- Department of Psychiatry and Human Behavior, University of Mississippi Medical Center, Jackson, Mississippi
| | - Beverly G Windham
- Department of Medicine, University of Mississippi Medical Center, Jackson, Mississippi
| | - Michael E Griswold
- Center of Biostatistics and Bioinformatics, University of Mississippi Medical Center, Jackson, Mississippi
| | - Iftikhar J Kullo
- Division of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota
| | - Stephen T Turner
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
| | - Thomas H Mosley
- Department of Medicine, University of Mississippi Medical Center, Jackson, Mississippi.
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Cortese GP, Burger C. Neuroinflammatory challenges compromise neuronal function in the aging brain: Postoperative cognitive delirium and Alzheimer's disease. Behav Brain Res 2016; 322:269-279. [PMID: 27544872 DOI: 10.1016/j.bbr.2016.08.027] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 08/08/2016] [Accepted: 08/11/2016] [Indexed: 12/19/2022]
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disease that targets memory and cognition, and is the most common form of dementia among the elderly. Although AD itself has been extensively studied, very little is known about early-stage preclinical events and/or mechanisms that may underlie AD pathogenesis. Since the majority of AD cases are sporadic in nature, advancing age remains the greatest known risk factor for AD. However, additional environmental and epigenetic factors are thought to accompany increasing age to play a significant role in the pathogenesis of AD. Postoperative cognitive delirium (POD) is a behavioral syndrome that primarily occurs in elderly patients following a surgical procedure or injury and is characterized by disruptions in cognition. Individuals that experience POD are at an increased risk for developing dementia and AD compared to normal aging individuals. One way in which cognitive function is affected in cases of POD is through activation of the inflammatory cascade following surgery or injury. There is compelling evidence that immune challenges (surgery and/or injury) associated with POD trigger the release of pro-inflammatory cytokines into both the periphery and central nervous system. Thus, it is possible that cognitive impairments following an inflammatory episode may lead to more severe forms of dementia and AD pathogenesis. Here we will discuss the inflammation associated with POD, and highlight the advantages of using POD as a model to study inflammation-evoked cognitive impairment. We will explore the possibility that advancing age and immune challenges may provide mechanistic evidence correlating early life POD with AD. We will review and propose neural mechanisms by which cognitive impairments occur in cases of POD, and discuss how POD may augment the onset of AD.
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Affiliation(s)
- Giuseppe P Cortese
- Department of Neurology, University of Wisconsin-Madison, Medical Sciences Center, 1300 University Ave, Room 73 Bardeen Madison, WI 53706, USA.
| | - Corinna Burger
- Department of Neurology, University of Wisconsin-Madison, Medical Sciences Center, 1300 University Ave, Room 73 Bardeen Madison, WI 53706, USA
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Colgecen E, Celikbilek A, Keskin DT. Cognitive Impairment in Patients with Psoriasis: A Cross-Sectional Study Using the Montreal Cognitive Assessment. Am J Clin Dermatol 2016; 17:413-9. [PMID: 27003581 DOI: 10.1007/s40257-016-0187-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
BACKGROUND Psoriasis is a multisystem chronic inflammatory disorder that is thought to be associated with cognitive impairment. AIMS We aimed to investigate cognitive performance using the Montreal Cognitive Assessment (MoCA) in patients with psoriasis. METHODS In total, 77 patients with psoriasis and 83 age- and sex-matched control subjects were enrolled in this prospective cross-sectional study. Physical and/or histopathological findings were used to diagnose psoriasis vulgaris, and patients with psoriasis were evaluated according to disease characteristics, including duration, severity, onset age, medical treatment, and cosmetic involvement. All participants provided sociodemographic data and completed the Beck Depression Inventory. Cognitive functions were evaluated using the MoCA tool. RESULTS The MoCA scores were significantly lower in the psoriasis group than in the control group (p = 0.004). More psoriasis patients than control subjects presented with deficits in visuospatial domain (p = 0.037) and executive functioning (p = 0.010). In the multivariate model, the presence of psoriasis (odds ratio [OR] 3.64; 95 % confidence interval [CI] 1.65-8.02; p = 0.001), education level (3.74; 95 % CI 1.65-8.48; p = 0.002), and area of residence (3.56; 95 % CI 1.61-7.87; p = 0.002) were found to be independently associated with cognitive impairment in patients with psoriasis and control subjects. On the other hand, no correlations were observed between disease characteristics and cognitive impairment in patients with psoriasis vulgaris (p > 0.05). CONCLUSIONS The results suggest that psoriasis patients might have early or subtle cognitive impairment, including visuospatial domain and executive functioning.
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Gonçalves G, Duarte R, Campos F, de Fátima Oliveira Silva I, de Sousa L, Faria M, Filho O, Bicalho M, de Moraes E, Teixeira A, Silveira J, das Graças Carvalho M. Elevated platelet microparticles levels are associated with lipidic oxidation and inflammatory profiles in Alzheimer's disease. Eur Geriatr Med 2016. [DOI: 10.1016/j.eurger.2016.05.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Puzianowska-Kuźnicka M, Owczarz M, Wieczorowska-Tobis K, Nadrowski P, Chudek J, Slusarczyk P, Skalska A, Jonas M, Franek E, Mossakowska M. Interleukin-6 and C-reactive protein, successful aging, and mortality: the PolSenior study. IMMUNITY & AGEING 2016; 13:21. [PMID: 27274758 PMCID: PMC4891873 DOI: 10.1186/s12979-016-0076-x] [Citation(s) in RCA: 238] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 05/25/2016] [Indexed: 12/14/2022]
Abstract
BACKGROUND In the elderly, chronic low-grade inflammation (inflammaging) is a risk factor for the development of aging-related diseases and frailty. Using data from several thousand Eastern Europeans aged 65 years and older, we investigated whether the serum levels of two proinflammatory factors, interleukin-6 (IL-6) and C-reactive protein (CRP), were associated with physical and cognitive performance, and could predict mortality in successfully aging elderly. RESULTS IL-6 and CRP levels systematically increased in an age-dependent manner in the entire study group (IL-6: n = 3496 individuals, p < 0.001 and CRP: n = 3632, p = 0.003), and in the subgroup of successfully aging individuals who had never been diagnosed with cardiovascular disease, myocardial infarction, stroke, type 2 diabetes, or cancer, and had a Mini Mental State Examination (MMSE) score ≥24 and a Katz Activities of Daily Living (ADL) score ≥5 (IL-6: n = 1258, p < 0.001 and CRP: n = 1312, p < 0.001). In the subgroup of individuals suffering from aging-related diseases/disability, only IL-6 increased with age (IL-6: n = 2238, p < 0.001 and CRP: n = 2320, p = 0.249). IL-6 and CRP levels were lower in successfully aging individuals than in the remaining study participants (both p < 0.001). Higher IL-6 and CRP levels were associated with poorer physical performance (lower ADL score) and poorer cognitive performance (lower MMSE score) (both p < 0.001). This association remained significant after adjusting for age, gender, BMI, lipids, estimated glomerular filtration rate, and smoking status. Longer survival was associated with lower concentrations of IL-6 and CRP not only in individuals with aging-related diseases/disability (HR = 1.063 per each pg/mL, 95 % CI: 1.052-1.074, p < 0.001 and HR = 1.020 per each mg/L, 95 % CI: 1.015-1.025, p < 0.001, respectively) but also in the successfully aging subgroup (HR = 1.163 per each pg/mL, 95 % CI: 1.128-1.199, p < 0.001 and HR = 1.074 per each mg/L, 95 % CI: 1.047-1.100, p < 0.001, respectively). These associations remained significant after adjusting for age, gender, BMI, lipids and smoking status. The Kaplan-Meier survival curves showed similar results (all p < 0.001). CONCLUSIONS Both IL-6 and CRP levels were good predictors of physical and cognitive performance and the risk of mortality in both the entire elderly population and in successfully aging individuals.
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Affiliation(s)
- Monika Puzianowska-Kuźnicka
- Department of Human Epigenetics, Mossakowski Medical Research Centre PAS, 5 Pawinskiego Street, 02-106 Warsaw, Poland ; Department of Geriatrics and Gerontology, Medical Centre of Postgraduate Education, 01-826 Warsaw, Poland
| | - Magdalena Owczarz
- Department of Human Epigenetics, Mossakowski Medical Research Centre PAS, 5 Pawinskiego Street, 02-106 Warsaw, Poland ; PolSenior Project, International Institute of Molecular and Cell Biology, 02-109 Warsaw, Poland
| | | | - Pawel Nadrowski
- Third Department of Cardiology, Medical University of Silesia in Katowice, 40-635 Katowice, Poland
| | - Jerzy Chudek
- Department of Pathophysiology, Faculty of Medicine, Medical University of Silesia in Katowice, 40-752 Katowice, Poland ; Deparment of Internal Medicine and Oncological Chemotherapy, Faculty of Medicine, Medical University of Silesia in Katowice, 40-027 Katowice, Poland
| | - Przemyslaw Slusarczyk
- PolSenior Project, International Institute of Molecular and Cell Biology, 02-109 Warsaw, Poland
| | - Anna Skalska
- Department of Internal Medicine and Geriatrics, Jagiellonian University Medical College, 31-351 Cracow, Poland
| | - Marta Jonas
- Department of Human Epigenetics, Mossakowski Medical Research Centre PAS, 5 Pawinskiego Street, 02-106 Warsaw, Poland
| | - Edward Franek
- Department of Human Epigenetics, Mossakowski Medical Research Centre PAS, 5 Pawinskiego Street, 02-106 Warsaw, Poland
| | - Malgorzata Mossakowska
- PolSenior Project, International Institute of Molecular and Cell Biology, 02-109 Warsaw, Poland
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145
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Shin HS, Shin MS, Ahn YB, Choi BY, Nam JH, Kim HD. Periodontitis Is Associated with Cognitive Impairment in Elderly Koreans: Results from the Yangpyeong Cohort Study. J Am Geriatr Soc 2016; 64:162-7. [PMID: 26782867 DOI: 10.1111/jgs.13781] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
OBJECTIVES To investigate the association between periodontitis and cognitive impairment in elderly Koreans. DESIGN Cross-sectional study with age- and sex-matched case-control selection. SETTING The Yangpyeong cardiovascular cohort (YCC), a part of the Korean Genome Epidemiologic Study (KoGES), Yangpyeong, South Korea. PARTICIPANTS Individuals with cognitive impairment (n=65) and cognitively normal controls (n=124) aged 60 and older from the YCC. MEASUREMENTS Alveolar bone loss was assessed on dental panoramic radiographs to categorize the cumulative history of periodontitis (HOP) into three groups: normal, moderate periodontitis, severe periodontitis. The Mini-Mental State Examination (MMSE) was used to categorize participants as cognitively normal or cognitively impaired. Age- and sex-matched conditional logistic regression models were used for analysis. Confounders considered in the analysis were age, sex, drinking, smoking, exercise, total cholesterol, total protein, body mass index, fasting plasma glucose, intima-media thickness, hypertension medication, and depression. RESULTS Participants with HOP were more likely to have cognitive impairment than those without (odds ratio=2.14, 95% confidence interval=1.04-4.41). The interaction effect of smoking and exercise on periodontitis highlighted the link. CONCLUSION Periodontitis was independently associated with cognitive impairment after controlling for various confounders. Further longitudinal research is needed to determine whether periodontitis plays a role in cognitive decline in older adults.
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Affiliation(s)
- Hye-Sun Shin
- Department of Preventive and Social Dentistry, Seoul National University, Seoul, Korea
| | - Myung-Seop Shin
- Department of Preventive and Social Dentistry, Seoul National University, Seoul, Korea
| | - Yoo-Been Ahn
- Department of Preventive and Social Dentistry, Seoul National University, Seoul, Korea
| | - Bo-Youl Choi
- Department of Preventive Medicine, College of Medicine, Hanyang University, Seoul, Korea
| | - Jung-Hyun Nam
- Department of Neuropsychiatry, Institute of Mental Health, College of Medicine, Hanyang University, Seoul, Korea
| | - Hyun-Duck Kim
- Department of Preventive and Social Dentistry, Seoul National University, Seoul, Korea.,Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea
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146
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Pugazhenthi S, Qin L, Reddy PH. Common neurodegenerative pathways in obesity, diabetes, and Alzheimer's disease. Biochim Biophys Acta Mol Basis Dis 2016; 1863:1037-1045. [PMID: 27156888 DOI: 10.1016/j.bbadis.2016.04.017] [Citation(s) in RCA: 372] [Impact Index Per Article: 46.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2016] [Revised: 04/28/2016] [Accepted: 04/29/2016] [Indexed: 12/16/2022]
Abstract
Cognitive decline in chronic diabetic patients is a less investigated topic. Diabetes and obesity are among the modifiable risk factors for Alzheimer's disease (AD), the most common form of dementia. Studies have identified several overlapping neurodegenerative mechanisms, including oxidative stress, mitochondrial dysfunction, and inflammation that are observed in these disorders. Advanced glycation end products generated by chronic hyperglycemia and their receptor RAGE provide critical links between diabetes and AD. Peripheral inflammation observed in obesity leads to insulin resistance and type 2 diabetes. Although the brain is an immune-privileged organ, cross-talks between peripheral and central inflammation have been reported. Damage to the blood brain barrier (BBB) as seen with aging can lead to infiltration of immune cells into the brain, leading to the exacerbation of central inflammation. Neuroinflammation, which has emerged as an important cause of cognitive dysfunction, could provide a central mechanism for aging-associated ailments. To further add to these injuries, adult neurogenesis that provides neuronal plasticity is also impaired in the diabetic brain. This review discusses these molecular mechanisms that link obesity, diabetes and AD. This article is part of a Special Issue entitled: Oxidative Stress and Mitochondrial Quality in Diabetes/Obesity and Critical Illness Spectrum of Diseases - edited by P. Hemachandra Reddy.
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Affiliation(s)
- Subbiah Pugazhenthi
- Section of Endocrinology, Veterans Affairs Medical Center, Denver, CO, USA; Department of Medicine, University of Colorado - Denver, Aurora, CO, USA.
| | - Limei Qin
- Section of Endocrinology, Veterans Affairs Medical Center, Denver, CO, USA
| | - P Hemachandra Reddy
- Garrison Institute on Aging, Texas Tech University Health Sciences Center, Lubbock, TX, USA
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147
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Emerging Link between Alzheimer's Disease and Homeostatic Synaptic Plasticity. Neural Plast 2016; 2016:7969272. [PMID: 27019755 PMCID: PMC4785275 DOI: 10.1155/2016/7969272] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 01/31/2016] [Indexed: 01/14/2023] Open
Abstract
Alzheimer's disease (AD) is an irreversible brain disorder characterized by progressive cognitive decline and neurodegeneration of brain regions that are crucial for learning and memory. Although intracellular neurofibrillary tangles and extracellular senile plaques, composed of insoluble amyloid-β (Aβ) peptides, have been the hallmarks of postmortem AD brains, memory impairment in early AD correlates better with pathological accumulation of soluble Aβ oligomers and persistent weakening of excitatory synaptic strength, which is demonstrated by inhibition of long-term potentiation, enhancement of long-term depression, and loss of synapses. However, current, approved interventions aiming to reduce Aβ levels have failed to retard disease progression; this has led to a pressing need to identify and target alternative pathogenic mechanisms of AD. Recently, it has been suggested that the disruption of Hebbian synaptic plasticity in AD is due to aberrant metaplasticity, which is a form of homeostatic plasticity that tunes the magnitude and direction of future synaptic plasticity based on previous neuronal or synaptic activity. This review examines emerging evidence for aberrant metaplasticity in AD. Putative mechanisms underlying aberrant metaplasticity in AD will also be discussed. We hope this review inspires future studies to test the extent to which these mechanisms contribute to the etiology of AD and offer therapeutic targets.
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148
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Liebert AD, Chow RT, Bicknell BT, Varigos E. Neuroprotective Effects Against POCD by Photobiomodulation: Evidence from Assembly/Disassembly of the Cytoskeleton. J Exp Neurosci 2016; 10:1-19. [PMID: 26848276 PMCID: PMC4737522 DOI: 10.4137/jen.s33444] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 12/09/2015] [Accepted: 12/15/2015] [Indexed: 02/07/2023] Open
Abstract
Postoperative cognitive dysfunction (POCD) is a decline in memory following anaesthesia and surgery in elderly patients. While often reversible, it consumes medical resources, compromises patient well-being, and possibly accelerates progression into Alzheimer's disease. Anesthetics have been implicated in POCD, as has neuroinflammation, as indicated by cytokine inflammatory markers. Photobiomodulation (PBM) is an effective treatment for a number of conditions, including inflammation. PBM also has a direct effect on microtubule disassembly in neurons with the formation of small, reversible varicosities, which cause neural blockade and alleviation of pain symptoms. This mimics endogenously formed varicosities that are neuroprotective against damage, toxins, and the formation of larger, destructive varicosities and focal swellings. It is proposed that PBM may be effective as a preconditioning treatment against POCD; similar to the PBM treatment, protective and abscopal effects that have been demonstrated in experimental models of macular degeneration, neurological, and cardiac conditions.
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Affiliation(s)
| | - Roberta T. Chow
- Brain and Mind Institute, University of Sydney, Sydney, NSW, Australia
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149
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Savas S, Kabaroglu C, Alpman A, Sarac F, Yalcin MA, Parıldar Z, Ozkinay F, Kumral E, Akcicek F. No relationship between lipoprotein-associated phospholipase A2, proinflammatory cytokines, and neopterin in Alzheimer's disease. Exp Gerontol 2016; 77:1-6. [PMID: 26828804 DOI: 10.1016/j.exger.2016.01.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 01/21/2016] [Accepted: 01/26/2016] [Indexed: 11/27/2022]
Abstract
OBJECTIVE Lipoprotein-associated phospholipase A2 (Lp-PLA2) is a reported risk factor for dementia. However, the relationship between Alzheimer's disease (AD) and Lp-PLA2 is still debatable and, to the best of our knowledge, no study has evaluated the associations between levels of Lp-PLA2, proinflammatory cytokines, and neopterin in AD. METHODS In total, 59 patients with AD and 38 non-demented individuals were included in the case-control study. Fasting serum concentrations of interleukin-6 (IL-6), tumor necrosis factor-alpha (TNF-α), neopterin, and Lp-PLA2 were determined using ELISA. The associations between AD and each of the variables were analyzed by logistic regression. RESULTS The median Lp-PLA2 levels in AD and controls were similar (P=0.29, not significant). Median serum neopterin and IL-6 levels were significantly higher in patients with AD than in controls (P=0.0001 and P=0.03, respectively). In regression analyses, median neopterin levels, a lower level of education, and female gender were significantly associated with AD when compared with controls (OR, 31.44, 95% CI 3.59-275.28, P=0.002; OR, 4.35, 95% CI 1.13-16.61, P=0.032; OR, 7.25, 95% CI 1.88-28.00, P=0.004, respectively). CONCLUSION In contrast to previous evidence suggesting its role in dementia and AD, Lp-PLA2 enzyme levels were higher in the controls, and no relationship between Lp-PLA2 and either proinflammatory cytokines or neopterin was identified in AD. Elevated neopterin levels may be considered inflammatory markers of AD.
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Affiliation(s)
- S Savas
- Division of Geriatric Medicine, Department of Internal Medicine, School of Medicine, Ege University, Izmir, Turkey.
| | - C Kabaroglu
- Department of Clinical Biochemistry, School of Medicine, Ege University, Izmir, Turkey
| | - A Alpman
- Department of Medical Genetics, School of Medicine, Ege University, Izmir, Turkey
| | - F Sarac
- Division of Geriatric Medicine, Department of Internal Medicine, School of Medicine, Ege University, Izmir, Turkey
| | - M A Yalcin
- Division of Geriatric Medicine, Department of Internal Medicine, School of Medicine, Ege University, Izmir, Turkey
| | - Z Parıldar
- Department of Clinical Biochemistry, School of Medicine, Ege University, Izmir, Turkey
| | - F Ozkinay
- Department of Medical Genetics, School of Medicine, Ege University, Izmir, Turkey
| | - E Kumral
- Department of Neurology, School of Medicine, Ege University, Izmir, Turkey
| | - F Akcicek
- Division of Geriatric Medicine, Department of Internal Medicine, School of Medicine, Ege University, Izmir, Turkey
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Miwa K, Okazaki S, Sakaguchi M, Mochizuki H, Kitagawa K. Interleukin-6, interleukin-6 receptor gene variant, small-vessel disease and incident dementia. Eur J Neurol 2016; 23:656-63. [PMID: 26725994 DOI: 10.1111/ene.12921] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Accepted: 11/04/2015] [Indexed: 11/29/2022]
Abstract
BACKGROUND AND PURPOSE Mixed neurogenerative and vascular dementia has emerged as the leading cause of dementia in the elderly. Inflammation is implicated in atherosclerosis, cerebral small-vessel disease (SVD) as well as cognitive impairment. However, longitudinal data on the predictive value of circulating inflammatory markers including gene variants and magnetic resonance imaging (MRI) findings in incident dementia are scarce. It was investigated whether circulating interleukin-6 (IL-6), C-reactive protein (CRP) and gene variants increase dementia risk. METHODS In a cohort of Japanese participants with vascular risk factors in an observational study from 2001, the association between baseline IL-6, CRP levels, gene variants [interleukin-6 receptor (IL-6R), rs2228145; IL-6, rs2097677; CRP, rs3093059] and incident all-cause dementia was evaluated. Baseline MRI was used to determine SVD (lacuna, white matter hyperintensities) and atrophy (medial-temporal lobe atrophy, bicaudate ratio). Cox proportional hazards analyses were performed for predictors of dementia, adjusting for age, sex, apolipoprotein Eε4, education, cerebrovascular events, vascular risk factors and MRI findings. RESULTS Of 803 subjects (mean 67.0 ± 8.5 years, males 59%), during a mean of 7.5 ± 3.2 years follow-up, 60 incident dementia patients (Alzheimer's disease 31; vascular dementia 17; mixed-type six; other six) were diagnosed. In multivariable analyses adjusted for age, sex, cerebrovascular events, MRI findings and IL-6R variant (rs2228145), IL-6 levels (relative risk 1.68, P = 0.048) or highest tertile (relative risk 2.38, P = 0.031) for all-cause dementia remained significant. Although subjects with rs2228145 carrier had significantly higher IL-6 levels, a significant association between rs2228145 and dementia was not observed. Conversely, CRP and remaining gene variants were not associated with dementia. CONCLUSIONS The deleterious effect of higher IL-6 on dementia remains consistent irrespective of conventional risk factors, MRI findings and IL-6R variant.
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Affiliation(s)
- K Miwa
- Department of Neurology and Stroke Center, Osaka University Graduate School of Medicine, Osaka, Japan
| | - S Okazaki
- Department of Neurology and Stroke Center, Osaka University Graduate School of Medicine, Osaka, Japan
| | - M Sakaguchi
- Department of Neurology and Stroke Center, Osaka University Graduate School of Medicine, Osaka, Japan
| | - H Mochizuki
- Department of Neurology and Stroke Center, Osaka University Graduate School of Medicine, Osaka, Japan
| | - K Kitagawa
- Department of Neurology, Tokyo Women's Medical University, Tokyo, Japan
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