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Gildea D, Doyle A, O'Connor J. The Effect of Exercise on Intraocular Pressure and Glaucoma. J Glaucoma 2024; 33:381-386. [PMID: 38722193 DOI: 10.1097/ijg.0000000000002411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 04/13/2024] [Indexed: 06/01/2024]
Abstract
PRCIS A review of the literature found that certain types of exercise and physical activity result in transient reductions in intraocular pressure and may have a beneficial effect on glaucoma severity and progression. INTRODUCTION Glaucoma is the most common cause of irreversible vision loss worldwide. Raised intraocular pressure (IOP) is the most important risk factor for the disease. Exercise is known to result in changes in IOP. The purpose of this review was to investigate the effect of exercise on IOP and glaucoma. METHODS A comprehensive search of multiple literature databases was performed. Medline, EMBASE, and Cochrane libraries were used to search for the relevant terms. 16 original studies were selected for the review. RESULTS Exercise of varying intensity and type has differing effects on IOP. Moderate-intensity aerobic exercise results in transient reductions in IOP, while high-intensity resistance exercise and weight-lifting lead to transient elevations in IOP. There is evidence to suggest that exercise and higher levels of fitness may be protective against the development of glaucoma. In addition, increased daily physical activity may be associated with less visual field progression in patients with glaucoma. While secondary causes of glaucoma are included in some of the studies discussed in this review, the findings are largely applicable to primary open angle glaucoma. CONCLUSION Exercise may be a beneficial lifestyle modification in the management of glaucoma; however, further longitudinal studies are required to validate this.
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Affiliation(s)
- David Gildea
- Royal Victoria Eye and Ear Hospital, Dublin 2, Ireland
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2
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Dzialas V, Hoenig MC, Prange S, Bischof GN, Drzezga A, van Eimeren T. Structural underpinnings and long-term effects of resilience in Parkinson's disease. NPJ Parkinsons Dis 2024; 10:94. [PMID: 38697984 PMCID: PMC11066097 DOI: 10.1038/s41531-024-00699-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 04/02/2024] [Indexed: 05/05/2024] Open
Abstract
Resilience in neuroscience generally refers to an individual's capacity to counteract the adverse effects of a neuropathological condition. While resilience mechanisms in Alzheimer's disease are well-investigated, knowledge regarding its quantification, neurobiological underpinnings, network adaptations, and long-term effects in Parkinson's disease is limited. Our study involved 151 Parkinson's patients from the Parkinson's Progression Marker Initiative Database with available Magnetic Resonance Imaging, Dopamine Transporter Single-Photon Emission Computed Tomography scans, and clinical information. We used an improved prediction model linking neuropathology to symptom severity to estimate individual resilience levels. Higher resilience levels were associated with a more active lifestyle, increased grey matter volume in motor-associated regions, a distinct structural connectivity network and maintenance of relative motor functioning for up to a decade. Overall, the results indicate that relative maintenance of motor function in Parkinson's patients may be associated with greater neuronal substrate, allowing higher tolerance against neurodegenerative processes through dynamic network restructuring.
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Affiliation(s)
- Verena Dzialas
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Department of Nuclear Medicine, 50937, Cologne, Germany
- University of Cologne, Faculty of Mathematics and Natural Sciences, 50923, Cologne, Germany
| | - Merle C Hoenig
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Department of Nuclear Medicine, 50937, Cologne, Germany
- Molecular Organization of the Brain, Institute for Neuroscience and Medicine II, Research Center Juelich, 52428, Juelich, Germany
| | - Stéphane Prange
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Department of Nuclear Medicine, 50937, Cologne, Germany
- Université de Lyon, Institut des Sciences Cognitives Marc Jeannerod, CNRS, UMR, 5229, Bron, France
| | - Gérard N Bischof
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Department of Nuclear Medicine, 50937, Cologne, Germany
- Molecular Organization of the Brain, Institute for Neuroscience and Medicine II, Research Center Juelich, 52428, Juelich, Germany
| | - Alexander Drzezga
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Department of Nuclear Medicine, 50937, Cologne, Germany
- Molecular Organization of the Brain, Institute for Neuroscience and Medicine II, Research Center Juelich, 52428, Juelich, Germany
- German Center for Neurodegenerative Diseases, 53127, Bonn, Germany
| | - Thilo van Eimeren
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Department of Nuclear Medicine, 50937, Cologne, Germany.
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Department of Neurology, 50937, Cologne, Germany.
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Moussiopoulou J, Handrack‐Bonnet M, Pross B, Pogarell O, Keeser D, Halle M, Falkai P, Scherr J, Hasan A, Roeh A. Comparative electroencephalography analysis: Marathon runners during tapering versus sedentary controls reveals no significant differences. Brain Behav 2024; 14:e3480. [PMID: 38680019 PMCID: PMC11056696 DOI: 10.1002/brb3.3480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 01/26/2024] [Accepted: 03/18/2024] [Indexed: 05/01/2024] Open
Abstract
INTRODUCTION Previous studies described various adaptive neuroplastic brain changes associated with physical activity (PA). EEG studies focused mostly on effects during or shortly after short bouts of exercise. This is the first study to investigate the capability of EEG to display PA-induced long-lasting plasticity in runners compared to a sedentary control group. METHODS Thirty trained runners and 30 age- and sex-matched sedentary controls (SC) were included as a subpopulation of the ReCaP (Running effects on Cognition and Plasticity) study. PA was measured with the International Physical Activity Questionnaire (IPAQ). Resting-state EEG of the runners was recorded in the tapering phase of the training for the Munich marathon 2017. Power spectrum analyses were conducted using standardized low-resolution electromagnetic tomography (sLORETA) and included the following frequency bands: delta: 1.5-6 Hz, theta: 6.5-8.0 Hz, alpha1: 8.5-10 Hz, alpha2: 10.5-12.0 Hz, beta1: 12.5-18.0 Hz, beta2: 18.5-21.0 Hz, beta3: 21.5-30.0 Hz, and total power (1.5-30 Hz). RESULTS PA (IPAQ) and BMI differed significantly between the groups. The other included demographic parameters were comparable. Statistical nonparametric mapping showed no significant power differences in EEG between the groups. DISCUSSION Heterogeneity in study protocols, especially in time intervals between exercise cessation and EEG recordings and juxtaposition of acute exercise-induced effects on EEG in previous studies, could be possible reasons for the differences in results. Future studies should record EEG at different time points after exercise cessation and in a broader spectrum of exercise intensities and forms to further explore the capability of EEG in displaying long-term exercise-induced plasticity.
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Affiliation(s)
- J. Moussiopoulou
- Department of Psychiatry and PsychotherapyLMU University Hospital, LMU MunichMunichGermany
| | - M. Handrack‐Bonnet
- Department of Psychiatry and PsychotherapyLMU University Hospital, LMU MunichMunichGermany
| | - B. Pross
- Department of Psychiatry and PsychotherapyLMU University Hospital, LMU MunichMunichGermany
- Medical Faculty, Department of Psychiatry, Psychotherapy and Psychosomatics, Bezirkskrankenhaus AugsburgUniversity of AugsburgAugsburgGermany
| | - O. Pogarell
- Department of Psychiatry and PsychotherapyLMU University Hospital, LMU MunichMunichGermany
| | - D. Keeser
- Department of Psychiatry and PsychotherapyLMU University Hospital, LMU MunichMunichGermany
| | - M. Halle
- Department of Prevention and Sports MedicineKlinikum rechts der Isar, Technische Universitaet MuenchenMunichGermany
- Partner Site Munich Heart AllianceDeutsches Zentrum für Herz‐ und Kreislauf‐Forschung (DZHK) e.V. (German Center for Cardiovascular Research)MunichGermany
| | - P. Falkai
- Department of Psychiatry and PsychotherapyLMU University Hospital, LMU MunichMunichGermany
| | - J. Scherr
- Department of Prevention and Sports MedicineKlinikum rechts der Isar, Technische Universitaet MuenchenMunichGermany
- University Center for Preventive and Sports Medicine, Balgrist University Hospital, University of ZurichZurichSwitzerland
| | - A. Hasan
- Medical Faculty, Department of Psychiatry, Psychotherapy and Psychosomatics, Bezirkskrankenhaus AugsburgUniversity of AugsburgAugsburgGermany
| | - A. Roeh
- Medical Faculty, Department of Psychiatry, Psychotherapy and Psychosomatics, Bezirkskrankenhaus AugsburgUniversity of AugsburgAugsburgGermany
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Campbell TS, Donoghue K, Roth TL. Unlocking the epigenome: Stress and exercise induced Bdnf regulation in the prefrontal cortex. Neurotoxicol Teratol 2024; 103:107353. [PMID: 38648864 DOI: 10.1016/j.ntt.2024.107353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 04/15/2024] [Accepted: 04/16/2024] [Indexed: 04/25/2024]
Abstract
Aversive caregiving in early life is a risk factor for aberrant brain and behavioral development. This outcome is related to epigenetic dysregulation of the brain-derived neurotrophic factor (Bdnf) gene. The Bdnf gene encodes for BDNF, a neurotrophin involved in early brain development, neural plasticity, learning, and memory. Recent work suggests that exercise may be neuroprotective in part by supporting BDNF protein and gene expression, making it an exciting target for therapeutic interventions. To our knowledge, exercise has never been studied as a therapeutic intervention in preclinical rodent models of caregiver maltreatment. To that end, the current study investigated the effect of an adult voluntary wheel running intervention on Bdnf methylation and expression in the prefrontal cortex of rats who experienced aversive caregiving in infancy. We employed a rodent model (Long Evans rats) wherein rat pups experienced intermittent caregiver-induced stress from postnatal days 1-7 and were given voluntary access to a running wheel (except in the control condition) from postnatal days 70-90 as a young adulthood treatment intervention. Our results indicate that maltreatment and exercise affect Bdnf gene methylation in an exon, CG site, and sex-specific manner. Here we add to a growing body of evidence of the ability for our experiences, including exercise, to permeate the brain. Keywords: Early life stress, Bdnf, exercise, prefrontal cortex.
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Affiliation(s)
- Taylor S Campbell
- University of Delaware, Psychological & Brain Sciences, Newark, DE 19716, United States of America.
| | - Katelyn Donoghue
- University of Delaware, Psychological & Brain Sciences, Newark, DE 19716, United States of America
| | - Tania L Roth
- University of Delaware, Psychological & Brain Sciences, Newark, DE 19716, United States of America
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Shafiq MA, Singh J, Khan ZA, Neary JP, Bardutz HA. Effect of exercise on sleep quality in Parkinson's disease: a mini review. BMC Neurol 2024; 24:49. [PMID: 38291381 PMCID: PMC10826022 DOI: 10.1186/s12883-024-03548-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 01/24/2024] [Indexed: 02/01/2024] Open
Abstract
The growing incidence of Parkinson's Disease (PD) is a major burden on the healthcare system. PD is caused by the degeneration of dopaminergic neurons and is known for its effects on motor function and sleep. Sleep is vital for maintaining proper homeostasis and clearing the brain of metabolic waste. Adequate time spent in each sleep stage can help maintain homeostatic function; however, patients with PD appear to exhibit sleep impairments. Although medications enhance the function of remaining dopaminergic neurons and reduce motor symptoms, their potential to improve sleep is still under question. Recently, research has shifted towards exercise protocols to help improve sleep in patients with PD. This review aims to provide an overview of how sleep is impaired in patients with PD, such as experiencing a reduction in time spent in slow-wave sleep, and how exercise can help restore normal sleep function. A PubMed search summarized the relevant research on the effects of aerobic and resistance exercise on sleep in patients with PD. Both high and low-intensity aerobic and resistance exercises, along with exercises related to balance and coordination, have been shown to improve some aspects of sleep. Neurochemically, sleeping leads to an increase in toxin clearance, including α-synuclein. Furthermore, exercise appears to enhance the concentration of brain-derived neurotrophic factors, which has preliminary evidence to suggest correlations to time spent in slow-wave sleep. More research is needed to further elucidate the physiological mechanism pertaining to sleep and exercise in patients with PD.
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Affiliation(s)
- M Abdullah Shafiq
- College of Medicine, University of Saskatchewan Regina Campus, 1440 14 Ave, Regina, SK, S4P 0W5, Canada
| | - Jyotpal Singh
- Faculty of Kinesiology and Health Studies, University of Regina, 3737 Wascana Pkwy, Regina, SK, S4S 0A2, Canada
| | - Zain A Khan
- Faculty of Kinesiology and Health Studies, University of Regina, 3737 Wascana Pkwy, Regina, SK, S4S 0A2, Canada
| | - J Patrick Neary
- Faculty of Kinesiology and Health Studies, University of Regina, 3737 Wascana Pkwy, Regina, SK, S4S 0A2, Canada
| | - Holly A Bardutz
- Faculty of Kinesiology and Health Studies, University of Regina, 3737 Wascana Pkwy, Regina, SK, S4S 0A2, Canada.
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Moghadasi M, Akbari F, Najafi P. Interaction of aerobic exercise and crocin improves memory, learning and hypocampic tau and neurotrophins gene expression in rats treated with trimethytin as a model of Alzheimer's disease. Mol Biol Rep 2024; 51:111. [PMID: 38227208 DOI: 10.1007/s11033-023-09197-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 12/22/2023] [Indexed: 01/17/2024]
Abstract
INTRODUCTION Alzheimer's disease (AD) is characterized by progressive cognitive decline and a reduction in hippocampal neurotrophins, in which trimethytin (TMT) infusion causes tangles and neuronal dysfunction, creating an AD-like model in rats. Previous studies have demonstrated that crocin, which has anti-inflammatory properties, can enhance learning, memory acquisition, and cognitive behavior. This study aimed to assess the combined impact of aerobic exercise and crocin on memory, learning, and hippocampal Tau and neurotrophins gene expression in AD-like model rats. METHODS Forty male Sprague Dawley rats were randomly divided into five groups: (1) healthy control, (2) Alzheimer's control, (3) endurance training, (4) crocin consumption, and (5) endurance training + crocin. Alzheimer's induction was achieved in groups 2-5 through intraperitoneal injection of 8 mg/kg TMT. Rats in groups 3 and 5 engaged in treadmill running three sessions per week, 15-30 min per session, at a speed of 15-20 m/min for eight weeks, and groups 4 and 5 received daily crocin supplementation of 25 mg/kg. RESULTS Alzheimer's induction with TMT showed significant reduction in memory, learning, NGF, BDNF, and TrkB gene expression, and increase in tau gene expression (all p < 0.05). Notably, endurance training and crocin consumption separately significantly increased memory, learning, NGF, BDNF, and TrkB gene expression while significantly decreasing tau gene expression (all p < 0.05). Importantly, combined endurance training with crocin yielded the most profound effects on memory (p = 0.001), NGF (p = 0.002), BDNF (p = 0.001), and TrkB (p = 0.003) gene expression (p < 0.005), as well as a reduction in tau gene expression (p = 0.001). CONCLUSION These findings underscore the possible impact of endurance training, particularly when coupled with crocin, on enhancing memory, learning, and neurotrophin gene expression and reducing tau gene expression in Alzheimer's rats. These results highlight the possibility of synergistic interventions for improved therapeutic outcomes.
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Affiliation(s)
- Mehrzad Moghadasi
- Department of Physical Education, Shiraz branch, Islamic Azad University, Shiraz, Iran.
| | - Fatemeh Akbari
- Department of Physical Education, Darab branch, Islamic Azad University, Darab, Iran
| | - Parisa Najafi
- Faculty of Sports and Exercise Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
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Seymour J, Mathers N. Placebo stimulates neuroplasticity in depression: implications for clinical practice and research. Front Psychiatry 2024; 14:1301143. [PMID: 38268561 PMCID: PMC10806142 DOI: 10.3389/fpsyt.2023.1301143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Accepted: 12/26/2023] [Indexed: 01/26/2024] Open
Abstract
Neither psychological nor neuroscientific investigations have been able to fully explain the paradox that placebo is designed to be inert in randomized controlled trials (RCTs), yet appears to be effective in evaluations of clinical interventions in all fields of medicine and alternative medicine. This article develops the Neuroplasticity Placebo Theory, which posits that neuroplasticity in fronto-limbic areas is the unifying factor in placebo response (seen in RCTs) and placebo effect (seen in clinical interventions) where it is not intended to be inert. Depression is the disorder that has the highest placebo response of any medical condition and has the greatest potential for understanding how placebos work: recent developments in understanding of the pathophysiology of depression suggest that fronto-limbic areas are sensitized in depression which is associated with a particularly strong placebo phenomenon. An innovative linkage is made between diverse areas of the psychology and the translational psychiatry literature to provide supportive evidence for the Neuroplasticity Placebo Theory. This is underpinned by neuro-radiological evidence of fronto-limbic change in the placebo arm of antidepressant trials. If placebo stimulates neuroplasticity in fronto-limbic areas in conditions other than depression - and results in a partially active treatment in other areas of medicine - there are far reaching consequences for the day-to-day use of placebo in clinical practice, the future design of RCTs in all clinical conditions, and existing unwarranted assertions about the efficacy of antidepressant medications. If fronto-limbic neuroplasticity is the common denominator in designating placebo as a partially active treatment, the terms placebo effect and placebo response should be replaced by the single term "placebo treatment."
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Affiliation(s)
- Jeremy Seymour
- Retired Consultant Psychiatrist, Rotherham Doncaster and South Humber NHS Trust, Rotherham, United Kingdom
| | - Nigel Mathers
- Emeritus Professor, Clinical Medicine, School of Medicine and Population Health, University of Sheffield, Sheffield, United Kingdom
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Tatta J. A Call to Action for Mental and Behavioral Health Stakeholders: Use Physical Therapists to Close the Gap in Depression Care. Phys Ther 2024; 104:pzad147. [PMID: 37930246 DOI: 10.1093/ptj/pzad147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 09/18/2023] [Accepted: 10/03/2023] [Indexed: 11/07/2023]
Affiliation(s)
- Joe Tatta
- Integrative Pain Science Institute, New York, New York, USA
- Department of Physical Therapy, Arcadia University, Glenside, Pennsylvania, USA
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de Souza PB, de Araujo Borba L, Castro de Jesus L, Valverde AP, Gil-Mohapel J, Rodrigues ALS. Major Depressive Disorder and Gut Microbiota: Role of Physical Exercise. Int J Mol Sci 2023; 24:16870. [PMID: 38069198 PMCID: PMC10706777 DOI: 10.3390/ijms242316870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 11/24/2023] [Accepted: 11/25/2023] [Indexed: 12/18/2023] Open
Abstract
Major depressive disorder (MDD) has a high prevalence and is a major contributor to the global burden of disease. This psychiatric disorder results from a complex interaction between environmental and genetic factors. In recent years, the role of the gut microbiota in brain health has received particular attention, and compelling evidence has shown that patients suffering from depression have gut dysbiosis. Several studies have reported that gut dysbiosis-induced inflammation may cause and/or contribute to the development of depression through dysregulation of the gut-brain axis. Indeed, as a consequence of gut dysbiosis, neuroinflammatory alterations caused by microglial activation together with impairments in neuroplasticity may contribute to the development of depressive symptoms. The modulation of the gut microbiota has been recognized as a potential therapeutic strategy for the management of MMD. In this regard, physical exercise has been shown to positively change microbiota composition and diversity, and this can underlie, at least in part, its antidepressant effects. Given this, the present review will explore the relationship between physical exercise, gut microbiota and depression, with an emphasis on the potential of physical exercise as a non-invasive strategy for modulating the gut microbiota and, through this, regulating the gut-brain axis and alleviating MDD-related symptoms.
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Affiliation(s)
- Pedro Borges de Souza
- Center of Biological Sciences, Department of Biochemistry, Universidade Federal de Santa Catarina, Florianópolis 88037-000, SC, Brazil; (P.B.d.S.); (L.d.A.B.); (L.C.d.J.); (A.P.V.)
| | - Laura de Araujo Borba
- Center of Biological Sciences, Department of Biochemistry, Universidade Federal de Santa Catarina, Florianópolis 88037-000, SC, Brazil; (P.B.d.S.); (L.d.A.B.); (L.C.d.J.); (A.P.V.)
| | - Louise Castro de Jesus
- Center of Biological Sciences, Department of Biochemistry, Universidade Federal de Santa Catarina, Florianópolis 88037-000, SC, Brazil; (P.B.d.S.); (L.d.A.B.); (L.C.d.J.); (A.P.V.)
| | - Ana Paula Valverde
- Center of Biological Sciences, Department of Biochemistry, Universidade Federal de Santa Catarina, Florianópolis 88037-000, SC, Brazil; (P.B.d.S.); (L.d.A.B.); (L.C.d.J.); (A.P.V.)
| | - Joana Gil-Mohapel
- Island Medical Program, Faculty of Medicine, University of British Columbia, Victoria, BC V8P 5C2, Canada
- Division of Medical Sciences, University of Victoria, Victoria, BC V8P 5C2, Canada
| | - Ana Lúcia S. Rodrigues
- Center of Biological Sciences, Department of Biochemistry, Universidade Federal de Santa Catarina, Florianópolis 88037-000, SC, Brazil; (P.B.d.S.); (L.d.A.B.); (L.C.d.J.); (A.P.V.)
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Molina-Hidalgo C, Stillman CM, Collins AM, Velazquez-Diaz D, Ripperger HS, Drake JA, Gianaros PJ, Marsland AL, Erickson KI. Changes in stress pathways as a possible mechanism of aerobic exercise training on brain health: a scoping review of existing studies. Front Physiol 2023; 14:1273981. [PMID: 37885801 PMCID: PMC10598664 DOI: 10.3389/fphys.2023.1273981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 09/25/2023] [Indexed: 10/28/2023] Open
Abstract
Physical activity (PA) in the form of aerobic exercise (AE) preserves and improves neurocognitive function across the lifespan. However, a mechanistic understanding of the pathways by which aerobic exercise impacts brain health is still lacking, particularly with respect to stress-related pathways. One mechanistic hypothesis is that AE improves neurocognitive health in part by modifying circulating levels of stress-related hormones and signaling factors associated with the hypothalamic-pituitary-adrenal (HPA) axis and autonomic nervous system (ANS), as commonly measured by the biomarkers cortisol (CORT) and salivary α-amylase (sAA). Thus, this hypothesis predicts that changes in stress biomarkers, such as CORT and sAA, are possible explanatory pathways mediating the positive effects of AE on neurocognitive health. In the present review article, we provide a summary of available studies examining the possibility that exercise-induced changes to stress biomarkers could partly account for exercise-related improvements in neurocognitive health. Our review indicates that despite the intuitive appeal of this hypothesis, there is insufficient evidence available to conclude that chronic and habitual AE affects neurocognitive health by altering stress biomarker pathways. The cross-sectional nature of the majority of reviewed studies highlights the need for well-controlled studies to adequately test this hypothesis.
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Affiliation(s)
| | - Chelsea M. Stillman
- Department of Psychology, University of Pittsburgh, Pittsburgh, PA, United States
| | - Audrey M. Collins
- AdventHealth Research Institute, Neuroscience Institute, Orlando, FL, United States
| | - Daniel Velazquez-Diaz
- AdventHealth Research Institute, Neuroscience Institute, Orlando, FL, United States
- ExPhy Research Group, Department of Physical Education, University of Cadiz, Cadiz, Spain
| | - Hayley S. Ripperger
- Department of Psychology, University of Pittsburgh, Pittsburgh, PA, United States
| | - Jermon A. Drake
- Department of Psychology, University of Pittsburgh, Pittsburgh, PA, United States
| | - Peter J. Gianaros
- Department of Psychology, University of Pittsburgh, Pittsburgh, PA, United States
| | - Anna L. Marsland
- Department of Psychology, University of Pittsburgh, Pittsburgh, PA, United States
| | - Kirk I. Erickson
- AdventHealth Research Institute, Neuroscience Institute, Orlando, FL, United States
- Department of Psychology, University of Pittsburgh, Pittsburgh, PA, United States
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Veronese N, Soysal P, Demurtas J, Solmi M, Bruyère O, Christodoulou N, Ramalho R, Fusar-Poli P, Lappas AS, Pinto D, Frederiksen KS, Corbi GM, Karpenko O, Georges J, Durães J, Schlögl M, Yilmaz O, Sieber C, Shenkin SD, Smith L, Reginster JY, Maggi S, Limongi F, Ars J, Barbagallo M, Cherubini A, Quinn T. Physical activity and exercise for the prevention and management of mild cognitive impairment and dementia: a collaborative international guideline. Eur Geriatr Med 2023; 14:925-952. [PMID: 37768499 PMCID: PMC10587099 DOI: 10.1007/s41999-023-00858-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 08/28/2023] [Indexed: 09/29/2023]
Abstract
BACKGROUND Physical activity and exercise have been suggested as effective interventions for the prevention and management of mild cognitive impairment (MCI) and dementia, but there are no international guidelines. OBJECTIVES To create a set of evidence- and expert consensus-based prevention and management recommendations regarding physical activity (any bodily movement produced by skeletal muscles that results in energy expenditure) and exercise (a subset of physical activity that is planned, structured, repetitive), applicable to a range of individuals from healthy older adults to those with MCI/dementia. METHODS Guideline content was developed with input from several scientific and lay representatives' societies. A systematic search across multidisciplinary databases was carried out until October 2021. Recommendations for prevention and management were developed according to the GRADE and complemented by consensus statements from the expert panels. RECOMMENDATIONS Physical activity may be considered for the primary prevention of dementia. In people with MCI there is continued uncertainty about the role of physical activity in slowing the conversion to dementia. Mind-body interventions have the greatest supporting evidence. In people with moderate dementia, exercise may be used for maintaining disability and cognition. All these recommendations were based on a very low/low certainty of evidence. CONCLUSIONS Although the scientific evidence on the beneficial role of physical activity and exercise in preserving cognitive functions in subjects with normal cognition, MCI or dementia is inconclusive, this panel, composed of scientific societies and other stakeholders, recommends their implementation based on their beneficial effects on almost all facets of health.
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Affiliation(s)
- Nicola Veronese
- Geriatric Unit, Department of Internal Medicine and Geriatrics, University of Palermo, Via del Vespro, 141, 90127, Palermo, Italy.
| | - Pinar Soysal
- Faculty of Medicine, Department of Geriatric Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Jacopo Demurtas
- Clinical and Experimental Medicine PhD Program, Università di Modena e Reggio Emilia, Modena - Azienda USL Sud Est Toscana, Grosseto, Italy
| | - Marco Solmi
- Department of Psychiatry, University of Ottawa, Ottawa, ON, Canada
- Department of Mental Health, The Ottawa Hospital, Ottawa, ON, Canada
- Department of Child and Adolescent Psychiatry, Charité Universitätsmedizin, Berlin, Germany
| | - Olivier Bruyère
- Division of Public Health, Epidemiology and Health Economics, World Health Organization, Collaborating Center for Epidemiology of Musculoskeletal Health and Aging, University of Liège, Liège, Belgium
| | - Nikos Christodoulou
- Department of Psychiatry, University of Thessaly Medical School, Volos, Greece
- World Psychiatric Association, Section of Preventive Psychiatry, University of Nottingham Medical School, Nottingham, UK
| | - Rodrigo Ramalho
- Department of Social and Community Health, School of Population Health, The University of Auckland, Auckland, New Zealand
| | - Paolo Fusar-Poli
- Department of Psychosis Studies, King's College London, London, UK
- Department of Brain and Behavioral Sciences, University of Pavia, Pavia, Italy
| | - Andreas S Lappas
- Faculty of Medicine, Department of Psychiatry, University of Thessaly, Larissa, Greece
- Aneurin Bevan University Health Board, Newport, Wales, UK
| | - Daniel Pinto
- Department of Physical Therapy, College of Health Sciences, Marquette University, Milwaukee, WI, USA
| | - Kristian Steen Frederiksen
- Department of Neurology, Danish Dementia Research Centre, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
| | - Grazia Maria Corbi
- Department of Translational Medical Sciences, University of Naples "Federico II", Naples, Italy
| | - Olga Karpenko
- Chair of the WPA Preventive Psychiatry Section, Mental-Health Clinic No. 1 Named After N.A. Alexeev, Moscow, Russia
| | | | - João Durães
- Neurology Department, Coimbra University Hospital Centre, Coimbra, Portugal
- Faculty of Medicine, Coimbra University, Coimbra, Portugal
| | - Mathias Schlögl
- Division of Geriatric Medicine, Clinic Barmelweid, Barmelweid, Switzerland
| | - Ozlem Yilmaz
- Department of Geriatric Medicine, Istanbul Training and Research Hospital, Samatya, Istanbul, Turkey
| | - Cornel Sieber
- Institute for Biomedicine of Aging, Friedrich-Alexander-Universität Erlangen-Nürnberg, Kobergerstr. 60, 90408, Nuremberg, Germany
- Department of Medicine, Kantonsspital Winterthur, Brauerstrasse 15, Postfach 834, 8401, Winterthur, Zurich, Switzerland
| | - Susan D Shenkin
- Ageing and Health Research Group and Advanced Care Research Centre, Usher Institute, University of Edinburgh, Edinburgh, Scotland, UK
| | - Lee Smith
- Centre for Health Performance and Wellbeing, Anglia Ruskin University, Cambridge, UK
| | - Jean-Yves Reginster
- Division of Public Health, Epidemiology and Health Economics, University of Liège, Liège, Belgium
| | - Stefania Maggi
- National Research Council, Neuroscience Institute, Aging Branch, Padua, Italy
| | - Federica Limongi
- National Research Council, Neuroscience Institute, Aging Branch, Padua, Italy
| | - Joan Ars
- RE-FiT Barcelona Research Group, Vall d'Hebron Institute of Research (VHIR) and Parc Sanitari Pere Virgili, Barcelona, Spain
- Aging Research Center, Department of Neurobiology, Care Sciences and Society (NVS), Karolinska Institutet and Stockholm University, Stockholm, Sweden
| | - Mario Barbagallo
- Geriatric Unit, Department of Internal Medicine and Geriatrics, University of Palermo, Via del Vespro, 141, 90127, Palermo, Italy
| | - Antonio Cherubini
- Geriatria, Accettazione Geriatrica e Centro di Ricerca Per l'invecchiamento, IRCCS INRCA, Ancona, Italy
| | - Terry Quinn
- Department of Geriatric Medicine, Glasgow Royal Infirmary, Glasgow, UK
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK
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12
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Collins AM, Molina-Hidalgo C, Aghjayan SL, Fanning J, Erlenbach ED, Gothe NP, Velazquez-Diaz D, Erickson KI. Differentiating the influence of sedentary behavior and physical activity on brain health in late adulthood. Exp Gerontol 2023; 180:112246. [PMID: 37356467 DOI: 10.1016/j.exger.2023.112246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 05/22/2023] [Accepted: 06/22/2023] [Indexed: 06/27/2023]
Abstract
Public health messaging calls for individuals to be more physically active and less sedentary, yet these lifestyle behaviors have been historically studied independently. Both physical activity (PA) and sedentary behavior (SB) are linked through time-use in a 24-hour day and are related to health outcomes, such as neurocognition. While the benefits of PA on brain health in late adulthood have been well-documented, the influence of SB remains to be understood. The purpose of this paper was to critically review the evolving work on SB and brain health in late adulthood and emphasize key areas of consideration to inform potential research. Overall, the existing literature studying the impact of SB on the components and mechanisms of brain health are mixed and inconclusive, provided largely by cross-sectional and observational work employing a variety of measurement techniques of SB and brain health outcomes. Further, many studies did not conceptually or statistically account for the role of PA in the proposed relationships. Therefore, our understanding of the way in which SB may influence neurocognition in late adulthood is limited. Future efforts should include more prospective longitudinal and randomized clinical trials with intentional methodological approaches to better understand the relationships between SB and the brain in late adulthood, and how these potential links are differentiated from PA.
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Affiliation(s)
- Audrey M Collins
- AdventHealth Research Institute, Department of Neuroscience, AdventHealth, Orlando, FL, USA.
| | | | - Sarah L Aghjayan
- Department of Psychology, University of Pittsburgh, Pittsburgh, PA, USA; Center for the Neural Basis of Cognition, University of Pittsburgh, Pittsburgh, PA, USA
| | - Jason Fanning
- Department of Health and Exercise Science, Wake Forest University, Winston-Salem, NC, USA
| | - Emily D Erlenbach
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Neha P Gothe
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL, USA; Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, USA; Bouvé College of Health Sciences, Northeastern University, Boston, MA, USA
| | - Daniel Velazquez-Diaz
- AdventHealth Research Institute, Department of Neuroscience, AdventHealth, Orlando, FL, USA; Exphy Research Group, Department of Physical Education, Faculty of Education Sciences, University Hospital, University of Cadiz, 11009 Cadiz, Spain; Biomedical Research and Innovation Institute of Cadiz (INiBICA) Research Unit, Puerta del Mar University Hospital, University of Cadiz, 11009 Cadiz, Spain
| | - Kirk I Erickson
- AdventHealth Research Institute, Department of Neuroscience, AdventHealth, Orlando, FL, USA; Department of Psychology, University of Pittsburgh, Pittsburgh, PA, USA; Center for the Neural Basis of Cognition, University of Pittsburgh, Pittsburgh, PA, USA
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13
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Grezenko H, Ekhator C, Nwabugwu NU, Ganga H, Affaf M, Abdelaziz AM, Rehman A, Shehryar A, Abbasi FA, Bellegarde SB, Khaliq AS. Epigenetics in Neurological and Psychiatric Disorders: A Comprehensive Review of Current Understanding and Future Perspectives. Cureus 2023; 15:e43960. [PMID: 37622055 PMCID: PMC10446850 DOI: 10.7759/cureus.43960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/23/2023] [Indexed: 08/26/2023] Open
Abstract
The burgeoning field of epigenetics offers transformative insights into the complex landscape of neurological and psychiatric disorders. By unraveling the intricate interplay between genetic, epigenetic, environmental, and lifestyle factors, this comprehensive review highlights the multifaceted nature of mental health. The exploration reveals the potential of epigenetic modifications to revolutionize our understanding, diagnosis, treatment, and prevention of these disorders. Emphasizing the importance of multidisciplinary collaborations, large-scale studies, technological advancements, and ethical considerations, the review asserts the promise of epigenetics as a vital tool for personalized medicine, early intervention, and public health strategies. While acknowledging the challenges in a still-emerging field, the review paints an optimistic picture of epigenetics as a groundbreaking approach that can reshape mental healthcare, offering hope for those affected by neurological and psychiatric conditions. The future trajectory of the field relies on interdisciplinary efforts, ethical diligence, innovative technologies, and translating scientific insights into real-world applications, thereby unlocking the vast potential of epigenetics in mental health.
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Affiliation(s)
- Han Grezenko
- Translational Neuroscience, Barrow Neurological Institute, Phoenix, USA
| | - Chukwuyem Ekhator
- Neuro-Oncology, New York Institute of Technology, College of Osteopathic Medicine, Old Westbury, USA
| | - Nkechi U Nwabugwu
- Public Health, Hudson College of Public Health, University of Oklahoma Health Sciences Center, Oklahoma City, USA
| | | | - Maryam Affaf
- Internal Medicine, Women Medical College, Abbottabad, PAK
| | - Ali M Abdelaziz
- Internal Medicine, Alexandria University Faculty of Medicine, Alexandria, EGY
| | | | | | - Fatima A Abbasi
- Cardiology, Shifa International Hospital Islamabad, Islamabad, PAK
| | - Sophia B Bellegarde
- Pathology and Laboratory Medicine, American University of Antigua, St. John's, ATG
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14
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Lentoor AG, Motsamai TB, Nxiweni T, Mdletshe B, Mdingi S. Protocol for a systematic review of the effects of gardening physical activity on neuroplasticity and cognitive function. AIMS Neurosci 2023; 10:118-129. [PMID: 37426777 PMCID: PMC10323255 DOI: 10.3934/neuroscience.2023009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 05/05/2023] [Accepted: 05/09/2023] [Indexed: 07/11/2023] Open
Abstract
Background The beneficial effects of gardening as a form of physical activity have garnered growing interest in recent years. Existing research suggests that physical activity enhances brain function through modifying synaptic plasticity, growth factor synthesis, and neurogenesis. Gardening physical activity is a promising, cost-effective, non-invasive intervention that can easily be augmented in the rehabilitation of neurodegenerative conditions. However, there is still insufficient literature. This protocol describes a systematic review to be conducted of scientific literature on the benefits of gardening as a physical activity that can promote neuroplasticity and improve cognitive function. This information can be useful as an intervention for persons who experience cognitive impairment brought on by cancer and chemotherapy in developing countries such as South Africa where there is real need to access cognitive rehabilitation. Methods and analysis The systematic review strategy will be conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines. An electronic literature database search of MEDLINE (PubMed), Embase, Scopus, Cochrane Central Register of Controlled Trials (CENTRAL), and Web of Science will be carried out using medical search terms (MeSH), with English as the only permitted language, during the time period of January 2010 to December 2022. We will search for and review studies on how gardening as a physical activity impacts neuroplasticity and cognition. Two reviewers will read the titles, and abstracts and full text of the studies identified during the search to exclude records that do not meet the inclusion criteria. Data will then be extracted from the remaining studies. Any differences in opinion arising between the reviewers during the procedure will be resolved through discussion with a third reviewer. The Joanna Briggs Institute (JBI) Critical Appraisal Tool checklist will be utilized independently by two reviewers to evaluate the possibility of bias. The included articles will be subjected to narrative synthesis, with the results being presented in a thematic manner. Ethics and dissemination There are no need for ethical approval because no patient data will be gathered. The results will be disseminated through an open-access peer-reviewed indexed journal, presented scientific meetings.PROSPERO registration number: CRD42023394493.
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15
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Wu W, Ding D, Zhao Q, Xiao Z, Luo J, Ganguli M, Hughes TF, Jacobsen E, Haan MN, van Dang K, Lima-Costa MF, Blay SL, de Castro-Costa E, Ng TP, Gwee X, Gao Q, Gureje O, Ojagbemi A, Bello T, Shahar S, Ludin AFM, Rivan NFM, Scarmeas N, Anastasiou CA, Yannakoulia M, Brodaty H, Crawford JD, Lipton RB, Derby CA, Katz MJ, Lipnicki DM, Sachdev PS. Dose-response relationship between late-life physical activity and incident dementia: A pooled analysis of 10 cohort studies of memory in an international consortium. Alzheimers Dement 2023; 19:107-122. [PMID: 35290713 PMCID: PMC9652610 DOI: 10.1002/alz.12628] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 01/22/2022] [Accepted: 01/24/2022] [Indexed: 01/28/2023]
Abstract
INTRODUCTION Though consistent evidence suggests that physical activity may delay dementia onset, the duration and amount of activity required remains unclear. METHODS We harmonized longitudinal data of 11,988 participants from 10 cohorts in eight countries to examine the dose-response relationship between late-life physical activity and incident dementia among older adults. RESULTS Using no physical activity as a reference, dementia risk decreased with duration of physical activity up to 3.1 to 6.0 hours/week (hazard ratio [HR] 0.88, 95% confidence interval [CI] 0.67 to 1.15 for 0.1 to 3.0 hours/week; HR 0.68, 95% CI 0.52 to 0.89 for 3.1 to 6.0 hours/week), but plateaued with higher duration. For the amount of physical activity, a similar pattern of dose-response curve was observed, with an inflection point of 9.1 to 18.0 metabolic equivalent value (MET)-hours/week (HR 0.92, 95% CI 0.70 to 1.22 for 0.1 to 9.0 MET-hours/week; HR 0.70, 95% CI 0.53 to 0.93 for 9.1 to 18.0 MET-hours/week). DISCUSSION This cross-national analysis suggests that performing 3.1 to 6.0 hours of physical activity and expending 9.1 to 18.0/MET-hours of energy per week may reduce dementia risk.
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Affiliation(s)
- Wanqing Wu
- Institute of Neurology, National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Ding Ding
- Institute of Neurology, National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Qianhua Zhao
- Institute of Neurology, National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Zhenxu Xiao
- Institute of Neurology, National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Jianfeng Luo
- Department of Biostatistics, School of Public Health, Fudan University, Shanghai, China
| | - Mary Ganguli
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, USA
| | - Tiffany F Hughes
- Department of Health Professions, Youngstown State University, OH, USA
| | - Erin Jacobsen
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, USA
| | - Mary N Haan
- Department of Epidemiology and Biostatistics, University of California at San Francisco, San Francisco, USA
| | - Kristine van Dang
- Department of Epidemiology and Biostatistics, University of California at San Francisco, San Francisco, USA
| | - Maria Fernanda Lima-Costa
- Center for Studies in Public Health and Aging’ René Rachou Research Center, Oswaldo Cruz Foundation, Belo Horizonte, Brazil
| | - Sergio Luis Blay
- Department of Psychiatry, Federal University of Sao Paulo, Sao Paulo, Brazil
| | - Erico de Castro-Costa
- Center for Studies in Public Health and Aging’ René Rachou Research Center, Oswaldo Cruz Foundation, Belo Horizonte, Brazil
| | - Tze Pin Ng
- Department of Psychological Medicine, National University of Singapore, Singapore, Singapore
| | - Xinyi Gwee
- Department of Psychological Medicine, National University of Singapore, Singapore, Singapore
| | - Qi Gao
- National Public Health and Epidemiology Unit, National Centre for Infectious Diseases, Singapore, Singapore
| | - Oye Gureje
- Department of Psychiatry, University of Ibadan, Ibadan, Nigeria
| | - Akin Ojagbemi
- Department of Psychiatry, University of Ibadan, Ibadan, Nigeria
| | - Toyin Bello
- Department of Psychiatry, University of Ibadan, Ibadan, Nigeria
| | - Suzana Shahar
- Dietetic Program, Centre for Healthy Aging, University Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Arimi Fitri Mat Ludin
- Biomedical Science Program, Centre for Healthy Aging, University Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Nurul Fatin Malek Rivan
- Nutritional Sciences Program, Centre for Healthy Aging, University Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | | | | | - Mary Yannakoulia
- Department of Nutrition and Dietetics, Harokopio University, Athens, Greece
| | - Henry Brodaty
- Centre for Healthy Brain Ageing, University of New South Wales, Sydney, Australia
| | - John D Crawford
- Centre for Healthy Brain Ageing, University of New South Wales, Sydney, Australia
| | - Richard B Lipton
- Department of Neurology, Albert Einstein College of Medicine, New York, USA
| | - Carol A Derby
- Department of Neurology, Albert Einstein College of Medicine, New York, USA
| | - Mindy J Katz
- Department of Neurology, Albert Einstein College of Medicine, New York, USA
| | - Darren M Lipnicki
- Centre for Healthy Brain Ageing, University of New South Wales, Sydney, Australia
| | - Perminder S Sachdev
- Centre for Healthy Brain Ageing, University of New South Wales, Sydney, Australia
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16
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Exercise does not enhance short-term deprivation-induced ocular dominance plasticity: evidence from dichoptic surround suppression. Vision Res 2022; 201:108123. [PMID: 36193605 DOI: 10.1016/j.visres.2022.108123] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 08/09/2022] [Accepted: 09/05/2022] [Indexed: 11/06/2022]
Abstract
The input from the two eyes is combined in the brain. In this combination, the relative strength of the input from each eye is determined by the ocular dominance. Recent work has shown that this dominance can be temporarily shifted. Covering one eye with an eye patch for a few hours makes its contribution stronger. It has been proposed that this shift can be enhanced by exercise. Here, we test this hypothesis using a dichoptic surround suppression task, and with exercise performed according to American College of Sport Medicine guidelines. We measured detection thresholds for patches of sinusoidal grating shown to one eye. When an annular mask grating was shown simultaneously to the other eye, thresholds were elevated. The difference in the elevation found in each eye is our measure of relative eye dominance. We made these measurements before and after 120 min of monocular deprivation (with an eye patch). In the control condition, subjects rested during this time. For the exercise condition, 30 min of exercise were performed at the beginning of the patching period. This was followed by 90 min of rest. We find that patching results in a shift in ocular dominance that can be measured using dichoptic surround suppression. However, we find no effect of exercise on the magnitude of this shift. We further performed a meta-analysis on the four studies that have examined the effects of exercise on the dominance shift. Looking across these studies, we find no evidence for such an effect.
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17
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Effects of Subchronic Aluminum Exposure on Learning, Memory, and Neurotrophic Factors in Rats. Neurotox Res 2022; 40:2046-2060. [PMID: 36342585 DOI: 10.1007/s12640-022-00599-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 10/19/2022] [Accepted: 10/24/2022] [Indexed: 11/09/2022]
Abstract
Aluminum (Al) is a neurotoxin that gradually accumulates in the brain in human life, resulting in oxidative brain injury related to Alzheimer's disease (AD) and other diseases. In this study, the learning and memory of rats exposed to different aluminum concentrations (0.0 g/L, 2.0 g/L, 4.0 g/L, and 8.0 g/L) were studied, and the learning and memory of rats were observed by shuttle box experiment. With hematoxylin and eosin staining, Western blot, immunofluorescence, and RT-PCR, the morphology of nerve cells in the hippocampus of rat brain were observed, and the levels of activator protein-1 (AP-1) gene and protein, nerve growth factor (NGF), neurotrophin-3 (NT3), glial cell line-derived neurotrophic factor (GDNF), and brain-derived neurotrophic factor (BDNF) gene and protein level, etc. The experimental results showed that subchronic aluminum exposure damaged learning and memory in rats. The cognitive function damage in rats was more evident after increasing the aluminum intake dose. The more aluminum intake, the more pronounced the histological changes in the hippocampus will be. The expression level and protein content of neurotrophic factors in the hippocampus of rats showed a negative correlation with aluminum intake. In this experiment, we explored the mechanism of aluminum exposure in learning and memory disorders, and provided some data reference for further elucidation of the damage mechanism of aluminum on the nervous system and subsequent preventive measures.
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18
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Affiliation(s)
| | | | - Brian Lawlor
- Global Brain Health Institute, Trinity College Dublin, Ireland
| | - Laura Booi
- Leeds Beckett University, Leeds LS1 3HE, UK
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19
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Liao Q, He J, Huang K. Physical activities and risk of neurodegenerative diseases: A two-sample Mendelian randomization study. Front Aging Neurosci 2022; 14:991140. [PMID: 36212040 PMCID: PMC9541335 DOI: 10.3389/fnagi.2022.991140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 09/08/2022] [Indexed: 11/17/2022] Open
Abstract
Objectives Physical activity (PA) is considered beneficial in slowing the progression and improving the neurodegenerative disease prognosis. However, the association between PA and neurodegenerative diseases remains unknown. In this study, we conducted a two-sample Mendelian randomization (MR) analysis to estimate the causal association between PA phenotypes and neurodegenerative diseases. Materials and methods Genetic variants robustly associated with PA phenotypes, used as instrumental variables, were extracted from public genome-wide association study (GWAS) summary statistics. Neurodegenerative diseases, including amyotrophic lateral sclerosis (ALS), Parkinson’s disease (PD), and Alzheimer’s disease (AD), were considered outcomes. GWAS information was also obtained from the most recent large population study of individuals with European ancestry. Multiple MR methods, pleiotropy tests and sensitivity analyses were performed to obtain a robust and valid estimation. Results We found a positive association between moderate-to-vigorous physical activities and ALS based on the inverse variance weighted MR analysis method (OR: 2.507, 95% CI: 1.218–5.160, p = 0.013). The pleiotropy test and sensitivity analysis confirmed the robustness and validity of these MR results. No causal effects of PA phenotypes were found on PD and AD. Conclusion Our study indicates a causal effect of PA on the risk of neurodegenerative diseases. Genetically predicted increases in self-reported moderate-to-vigorous PA participation could increase the risk of ALS in individuals of European ancestry. Precise and individualized prescriptions of physical activity should be provided to the elderly population.
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Affiliation(s)
- Qiao Liao
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Jian He
- Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Kun Huang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
- *Correspondence: Kun Huang,
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Aerobic Exercise Regulates Apoptosis through the PI3K/Akt/GSK-3β Signaling Pathway to Improve Cognitive Impairment in Alzheimer’s Disease Mice. Neural Plast 2022; 2022:1500710. [PMID: 36124291 PMCID: PMC9482542 DOI: 10.1155/2022/1500710] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 06/29/2022] [Accepted: 07/29/2022] [Indexed: 11/25/2022] Open
Abstract
Neuronal apoptosis is an important factor in the etiology of Alzheimer's disease (AD). Aerobic exercise (AE) enhances learning and memory, improves cognitive impairment, increases telomere binding protein expression, and decreases apoptosis regulators, but it remains unclear whether it can improve cognitive impairment caused by neuronal apoptosis in AD. Therefore, this study investigated whether an 8-week running table exercise intervention could reduce apoptosis and improve cognitive function in the hippocampal neurons of AD model mice. After the exercise intervention, we evaluated the learning memory ability (positioning, navigation, and spatial search) of mice using a Morris water labyrinth, Nissl staining, immunohistochemistry, and protein application to detect hippocampal PI3K/Akt/GSK-3β signaling pathway protein and hippocampal neuronal cell apoptosis protein B cell lymphoma 2 (Bcl-2) and apoptosis-promoting protein bcl-2-related X (Bax) protein expression. The results showed that aerobic exercise improved the location and spatial exploration ability of mice, increased the number of PI3K- and p-Akt-positive cells, increased the expression of PI3K, p-Akt, and bcl-2 proteins, decreased the expression of GSK-3β and Bax proteins, and increased the bcl-2/Bax ratio of mice. The results suggest that aerobic exercise can reduce apoptosis and improve cognitive function in AD mice. The molecular mechanism may involve activation of the PI3K/Akt/GSK-3β signaling pathway.
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Czenczek-Lewandowska E, Leszczak J, Wyszyńska J, Baran J, Weres A, Lewandowski B. The Role of Physical Activity in the Reduction of Generalised Anxiety Disorder in Young Adults in the Context of COVID-19 Pandemic. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:11086. [PMID: 36078815 PMCID: PMC9517910 DOI: 10.3390/ijerph191711086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 09/01/2022] [Accepted: 09/02/2022] [Indexed: 06/15/2023]
Abstract
Physical activity is critically important not only for physical but also for mental health. Exercise may be a beneficial form of therapy for young adults with anxiety disorders. The global outbreak of the COVID-19 pandemic adversely affected the public, including young adults, in terms of their mental well-being and opportunities for physical activity. The study aimed to identify the influence of physical activity (PA) on generalised anxiety in young adults. It also assessed the changes which occurred in the level of PA and in generalised anxiety in young adults as a result of COVID-19 pandemic. A cross-sectional survey was carried out online with 506 young adults aged 18 to 34 years (=24.67 years ± 4.23 years). Respondents provided two answers to each question, i.e., information relating to the last 7 days during the pandemic (first hard lockdown), and to a period of 7 days before the pandemic (retrospective). The levels of physical activity were measured using 7-item International Physical Activity Questionnaire-Short Form (IPAQ-SF), whereas the level of generalised anxiety was assessed using the Generalised Anxiety Disorder 7 (GAD-7) questionnaire. During the pandemic there was a significant correlation between the level of generalised anxiety and the level of physical activity reported by the respondents (p = 0.048). A higher level of physical activity corresponded to lower level of generalized anxiety in young adults. During the pandemic, young adults spent significantly less time performing physical activity (8752.5 vs. 6174.6 metabolic equivalents (MET) min/week, p < 0.001), they spent more time engaging in sedentary behaviours (Me = 240 vs. Me = 300 min/day, p < 0.001), and they walked much less (from Me = 6930.0 (MET) min/week vs. 3861.0 (MET) min/week (44.29% decrease). Furthermore, after the outbreak of the pandemic the level of perceived generalised anxiety increased significantly (p < 0.001). Physical activity may play an important role in reducing anxiety disorder in young adults. During the COVID-19 pandemic young adults were significantly less involved in PA, which adversely affected their physical and mental condition. The importance of sufficient PA should be emphasised during this specific period, particularly among young adults.
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Affiliation(s)
| | - Justyna Leszczak
- Institute of Health Sciences, Medical College, University of Rzeszów, ul. Kopisto 2a, 35-959 Rzeszow, Poland
| | - Justyna Wyszyńska
- Institute of Health Sciences, Medical College, University of Rzeszów, ul. Kopisto 2a, 35-959 Rzeszow, Poland
| | - Joanna Baran
- Institute of Health Sciences, Medical College, University of Rzeszów, ul. Kopisto 2a, 35-959 Rzeszow, Poland
| | - Aneta Weres
- Institute of Health Sciences, Medical College, University of Rzeszów, ul. Kopisto 2a, 35-959 Rzeszow, Poland
| | - Bogumił Lewandowski
- Institute of Medical Sciences, Medical College, University of Rzeszów, ul. Kopisto 2a, 35-959 Rzeszow, Poland
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22
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Bonanni R, Cariati I, Tarantino U, D’Arcangelo G, Tancredi V. Physical Exercise and Health: A Focus on Its Protective Role in Neurodegenerative Diseases. J Funct Morphol Kinesiol 2022; 7:jfmk7020038. [PMID: 35645300 PMCID: PMC9149968 DOI: 10.3390/jfmk7020038] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 04/26/2022] [Accepted: 04/27/2022] [Indexed: 02/07/2023] Open
Abstract
Scientific evidence has demonstrated the power of physical exercise in the prevention and treatment of numerous chronic and/or age-related diseases, such as musculoskeletal, metabolic, and cardiovascular disorders. In addition, regular exercise is known to play a key role in the context of neurodegenerative diseases, as it helps to reduce the risk of their onset and counteracts their progression. However, the underlying molecular mechanisms have not yet been fully elucidated. In this regard, neurotrophins, such as brain-derived neurotrophic factor (BDNF), nerve growth factor (NGF), glia cell line-derived neurotrophic factor (GDNF), neurotrophin-3 (NT-3), and neurotrophin-4 (NT-4), have been suggested as key mediators of brain health benefits, as they are involved in neurogenesis, neuronal survival, and synaptic plasticity. The production of these neurotrophic factors, known to be increased by physical exercise, is downregulated in neurodegenerative disorders, suggesting their fundamental importance in maintaining brain health. However, the mechanism by which physical exercise promotes the production of neurotrophins remains to be understood, posing limits on their use for the development of potential therapeutic strategies for the treatment of neurodegenerative diseases. In this literature review, we analyzed the most recent evidence regarding the relationship between physical exercise, neurotrophins, and brain health, providing an overview of their involvement in the onset and progression of neurodegeneration.
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Affiliation(s)
- Roberto Bonanni
- Department of Clinical Sciences and Translational Medicine, “Tor Vergata” University of Rome, 00133 Rome, Italy; (R.B.); (U.T.)
| | - Ida Cariati
- Department of Clinical Sciences and Translational Medicine, “Tor Vergata” University of Rome, 00133 Rome, Italy; (R.B.); (U.T.)
- Correspondence:
| | - Umberto Tarantino
- Department of Clinical Sciences and Translational Medicine, “Tor Vergata” University of Rome, 00133 Rome, Italy; (R.B.); (U.T.)
- Department of Orthopaedics and Traumatology, “Policlinico Tor Vergata” Foundation, 00133 Rome, Italy
- Centre of Space Bio-Medicine, “Tor Vergata” University of Rome, 00133 Rome, Italy; (G.D.); (V.T.)
| | - Giovanna D’Arcangelo
- Centre of Space Bio-Medicine, “Tor Vergata” University of Rome, 00133 Rome, Italy; (G.D.); (V.T.)
- Department of Systems Medicine, “Tor Vergata” University of Rome, 00133 Rome, Italy
| | - Virginia Tancredi
- Centre of Space Bio-Medicine, “Tor Vergata” University of Rome, 00133 Rome, Italy; (G.D.); (V.T.)
- Department of Systems Medicine, “Tor Vergata” University of Rome, 00133 Rome, Italy
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Effects of Leisure-Time Physical Activity on Cognitive Reserve Biomarkers and Leisure Motivation in the Pre-Diabetes Elderly. Healthcare (Basel) 2022; 10:healthcare10040737. [PMID: 35455914 PMCID: PMC9032024 DOI: 10.3390/healthcare10040737] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/13/2022] [Accepted: 04/13/2022] [Indexed: 02/01/2023] Open
Abstract
The purpose of this study was to investigate the change in cognitive reserve biomarkers of the pre-diabetic individual according to the types of leisure-time physical activity (aerobic or resistance physical activity). The research subjects (n = 184) who participated in the survey were pre-diabetic and diabetic patients who were visiting university hospitals and welfare centers. The intervention subjects (n = 36) who were elderly females with pre-diabetes volunteered to participate in the study by performing regular physical exercise (aerobic or resistance exercise). The study participants were 65 years of age or older with pre-diabetes defined by a glycated hemoglobin (HbA1c) level of (5.7−6.4)%. All research subjects performed motivation and stress questionnaire survey. All intervention subjects participated in leisure-time physical activity (LTPA) for 12 weeks. Body composition, HbA1c, and cognitive reserve biomarkers were measured at baseline, and at 6 and 12 weeks. LTPA motivation confirmed that the LTPA participants had a high level of motivation. Stress confirmed that the stress level of LTPA participants was low. Two-way within-factor ANOVA revealed significant group × time interaction for weight (p < 0.05), BMI (p < 0.01), % fat (p < 0.001), SBP (p < 0.05), HbA1c (p < 0.001), BDNF (p < 0.001), and Beta-Amyloid 1−42 (p < 0.001). In both physical activity groups, HbA1c (p < 0.001), NGF (p < 0.05), BDNF (p < 0.05), and Cathepsin B (p < 0.05) improved significantly at 12 weeks, compared to baseline and 6 weeks. In the resistance physical activity group, Beta-Amyloid 1−42 (p < 0.01) and Homocysteine (p < 0.05) significantly decreased at 12 weeks, compared to baseline and at 6 weeks. The LTPA showed high levels of integrated and identified regulation among leisure motive types, and the level of stress was found to be low. The LTPA is effective in reducing the HbA1c levels of the pre-diabetes elderly. In addition, the pre-diabetes elderly were found to have increased NGF, BDNF, and cathepsin B, and decreased Beta-Amyloid 1−42 and homocysteine. Regular leisure-time physical activity has a positive effect on cognitive reserve biomarkers through improving glycemic control by reducing weight and % fat in the pre-diabetes elderly.
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Mitochondrial Proteins Unveil the Mechanism by Which Physical Exercise Ameliorates Memory, Learning and Motor Activity in Hypoxic Ischemic Encephalopathy Rat Model. Int J Mol Sci 2022; 23:ijms23084235. [PMID: 35457053 PMCID: PMC9024620 DOI: 10.3390/ijms23084235] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 03/30/2022] [Accepted: 04/05/2022] [Indexed: 12/29/2022] Open
Abstract
Background: Physical exercise has been shown to improve cognitive and motor functions, promoting neurogenesis and demonstrating therapeutic benefits in neurodegenerative disorders. Nonetheless, it is crucial to investigate the cellular and molecular mechanisms by which this occurs. The study aimed to investigate and evaluate the effect of swimming exercise on the changes of mitochondrial proteins in the brains of rats with hypoxic ischemic encephalopathy (HIE). Methods: the vertical pole and Morris water maze tests were used to assess the animals’ motor and cognitive functions, and western blot and immunofluorescence of brain tissue were used to assess the biomarkers of mitochondrial apoptosis and cristae stability in response to exercise training. Four groups of rats were used: (1) sham sedentary group (SHAM, NT), (2) sham exercise training group (SHAM, T) (3) hypoxic ischemic encephalopathy sedentary group (HIE, NT), and (4) hypoxic ischemic encephalopathy exercise training group (HIE, T). Results: animals with HIE showed motor and cognitive deficits, as well as increased apoptotic protein expression. Exercise, on the other hand, improved motor and cognitive functions while also suppressing the expression of apoptotic proteins. Conclusions: By stabilizing the mitochondrial cristae and suppressing the apoptotic cascade, physical exercise provided neuroprotection in hypoxic ischemia-induced brain injury.
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Poh EZ, Green C, Agostinelli L, Penrose-Menz M, Karl AK, Harvey AR, Rodger J. Manipulating the Level of Sensorimotor Stimulation during LI-rTMS Can Improve Visual Circuit Reorganisation in Adult Ephrin-A2A5 -/- Mice. Int J Mol Sci 2022; 23:ijms23052418. [PMID: 35269561 PMCID: PMC8910719 DOI: 10.3390/ijms23052418] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/15/2022] [Accepted: 02/16/2022] [Indexed: 11/16/2022] Open
Abstract
Repetitive transcranial magnetic stimulation (rTMS) is a non-invasive brain stimulation technique that has the potential to treat a variety of neurologic and psychiatric disorders. The extent of rTMS-induced neuroplasticity may be dependent on a subject's brain state at the time of stimulation. Chronic low intensity rTMS (LI-rTMS) has previously been shown to induce beneficial structural and functional reorganisation within the abnormal visual circuits of ephrin-A2A5-/- mice in ambient lighting. Here, we administered chronic LI-rTMS in adult ephrin-A2A5-/- mice either in a dark environment or concurrently with voluntary locomotion. One day after the last stimulation session, optokinetic responses were assessed and fluorescent tracers were injected to map corticotectal and geniculocortical projections. We found that LI-rTMS in either treatment condition refined the geniculocortical map. Corticotectal projections were improved in locomotion+LI-rTMS subjects, but not in dark + LI-rTMS and sham groups. Visuomotor behaviour was not improved in any condition. Our results suggest that the beneficial reorganisation of abnormal visual circuits by rTMS can be significantly influenced by simultaneous, ambient visual input and is enhanced by concomitant physical exercise. Furthermore, the observed pathway-specific effects suggest that regional molecular changes and/or the relative proximity of terminals to the induced electric fields influence the outcomes of LI-rTMS on abnormal circuitry.
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Affiliation(s)
- Eugenia Z. Poh
- School of Biological Sciences, The University of Western Australia, Crawley, WA 6009, Australia; (E.Z.P.); (M.P.-M.); (A.-K.K.)
- School of Human Sciences, The University of Western Australia, Crawley, WA 6009, Australia; (C.G.); (L.A.); (A.R.H.)
- Perron Institute for Neurological and Translational Research, 8 Verdun St, Nedlands, WA 6009, Australia
- Netherlands Institute for Neuroscience, Royal Netherlands Academy of Arts and Sciences, 1105 BA Amsterdam, The Netherlands
| | - Courtney Green
- School of Human Sciences, The University of Western Australia, Crawley, WA 6009, Australia; (C.G.); (L.A.); (A.R.H.)
| | - Luca Agostinelli
- School of Human Sciences, The University of Western Australia, Crawley, WA 6009, Australia; (C.G.); (L.A.); (A.R.H.)
| | - Marissa Penrose-Menz
- School of Biological Sciences, The University of Western Australia, Crawley, WA 6009, Australia; (E.Z.P.); (M.P.-M.); (A.-K.K.)
| | - Ann-Kathrin Karl
- School of Biological Sciences, The University of Western Australia, Crawley, WA 6009, Australia; (E.Z.P.); (M.P.-M.); (A.-K.K.)
- Department of Neurology, University Hospital of Würzburg, Josef-Schneider-Strasse 11, 97080 Würzburg, Germany
| | - Alan R. Harvey
- School of Human Sciences, The University of Western Australia, Crawley, WA 6009, Australia; (C.G.); (L.A.); (A.R.H.)
- Perron Institute for Neurological and Translational Research, 8 Verdun St, Nedlands, WA 6009, Australia
| | - Jennifer Rodger
- School of Biological Sciences, The University of Western Australia, Crawley, WA 6009, Australia; (E.Z.P.); (M.P.-M.); (A.-K.K.)
- Perron Institute for Neurological and Translational Research, 8 Verdun St, Nedlands, WA 6009, Australia
- Correspondence: ; Tel.: +61-8-6488-2245
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Zhao CG, Ju F, Sun W, Jiang S, Xi X, Wang H, Sun XL, Li M, Xie J, Zhang K, Xu GH, Zhang SC, Mou X, Yuan H. Effects of Training with a Brain-Computer Interface-Controlled Robot on Rehabilitation Outcome in Patients with Subacute Stroke: A Randomized Controlled Trial. Neurol Ther 2022; 11:679-695. [PMID: 35174449 PMCID: PMC9095806 DOI: 10.1007/s40120-022-00333-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Accepted: 01/25/2022] [Indexed: 01/26/2023] Open
Abstract
INTRODUCTION Stroke is always associated with a difficult functional recovery process. A brain-computer interface (BCI) is a technology which provides a direct connection between the human brain and external devices. The primary aim of this study was to determine whether training with a BCI-controlled robot can improve functions in patients with subacute stroke. METHODS Subacute stroke patients aged 32-68 years with a course of 2 weeks to 3 months were randomly assigned to the BCI group or to the sham group for a 4-week course. The primary outcome measures were Loewenstein Occupational Therapy Cognitive Assessment (LOCTA) and Fugl-Meyer Assessment for Lower Extremity (FMA-LE). Secondary outcome measures included Fugl-Meyer Assessment for Balance (FMA-B), Functional Ambulation Category (FAC), Modified Barthel Index (MBI), serum brain-derived neurotrophic factor (BDNF) levels and motor-evoked potential (MEP). RESULTS A total of 28 patients completed the study. Both groups showed a significant increase in mean LOCTA (sham: P < 0.001, Cohen's d = - 2.972; BCI: P < 0.001, Cohen's d = - 4.266) and FMA-LE (sham: P < 0.001, Cohen's d = - 3.178; BCI: P < 0.001, Cohen's d = - 3.063) scores. The LOCTA scores in the BCI group were 14.89% higher than in the sham group (P = 0.049, Cohen's d = - 0.580). There were no significant differences between the two groups in terms of FMA-B (P = 0.363, Cohen's d = - 0.252), FAC (P = 0.363), or MBI (P = 0.493, Cohen's d = - 0.188) scores. The serum levels of BDNF were significantly higher within the BCI group (P < 0.001, Cohen's d = - 1.167), and the MEP latency decreased by 3.75% and 4.71% in the sham and BCI groups, respectively. CONCLUSION Training with a BCI-controlled robot combined with traditional physiotherapy promotes cognitive function recovery, and enhances motor functions of the lower extremity in patients with subacute stroke. These patients also showed increased secretion of BDNF. TRIAL REGISTRATION Chinese clinical trial registry: ChiCTR-INR-17012874.
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Affiliation(s)
- Chen-Guang Zhao
- Department of Rehabilitation Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Fen Ju
- Department of Rehabilitation Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Wei Sun
- Department of Rehabilitation Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Shan Jiang
- Department of Rehabilitation Medicine, China-Japan Friendship Hospital, Beijing, China
| | - Xiao Xi
- Department of Rehabilitation Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Hong Wang
- Department of Rehabilitation Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Xiao-Long Sun
- Department of Rehabilitation Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Min Li
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, China
| | - Jun Xie
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, China
| | - Kai Zhang
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, China
| | - Guang-Hua Xu
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, China
| | - Si-Cong Zhang
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, China
| | - Xiang Mou
- Department of Rehabilitation Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Hua Yuan
- Department of Rehabilitation Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, China.
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Eggert S, Kins S, Endres K, Brigadski T. Brothers in arms: proBDNF/BDNF and sAPPα/Aβ-signaling and their common interplay with ADAM10, TrkB, p75NTR, sortilin, and sorLA in the progression of Alzheimer's disease. Biol Chem 2022; 403:43-71. [PMID: 34619027 DOI: 10.1515/hsz-2021-0330] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 09/16/2021] [Indexed: 12/22/2022]
Abstract
Brain-derived neurotrophic factor (BDNF) is an important modulator for a variety of functions in the central nervous system (CNS). A wealth of evidence, such as reduced mRNA and protein level in the brain, cerebrospinal fluid (CSF), and blood samples of Alzheimer's disease (AD) patients implicates a crucial role of BDNF in the progression of this disease. Especially, processing and subcellular localization of BDNF and its receptors TrkB and p75 are critical determinants for survival and death in neuronal cells. Similarly, the amyloid precursor protein (APP), a key player in Alzheimer's disease, and its cleavage fragments sAPPα and Aβ are known for their respective roles in neuroprotection and neuronal death. Common features of APP- and BDNF-signaling indicate a causal relationship in their mode of action. However, the interconnections of APP- and BDNF-signaling are not well understood. Therefore, we here discuss dimerization properties, localization, processing by α- and γ-secretase, relevance of the common interaction partners TrkB, p75, sorLA, and sortilin as well as shared signaling pathways of BDNF and sAPPα.
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Affiliation(s)
- Simone Eggert
- Department of Human Biology and Human Genetics, University of Kaiserslautern, Erwin-Schrödinger-Str. 13, D-67663 Kaiserslautern, Germany
| | - Stefan Kins
- Department of Human Biology and Human Genetics, University of Kaiserslautern, Erwin-Schrödinger-Str. 13, D-67663 Kaiserslautern, Germany
| | - Kristina Endres
- Department of Psychiatry and Psychotherapy, University Medical Center, Johannes Gutenberg-University Mainz, D-55131 Mainz, Germany
| | - Tanja Brigadski
- Department of Informatics and Microsystem Technology, University of Applied Sciences Kaiserslautern, D-66482 Zweibrücken, Germany
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Erickson KI, Donofry SD, Sewell KR, Brown BM, Stillman CM. Cognitive Aging and the Promise of Physical Activity. Annu Rev Clin Psychol 2022; 18:417-442. [PMID: 35044793 DOI: 10.1146/annurev-clinpsy-072720-014213] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Is the field of cognitive aging irretrievably concerned with decline and deficits, or is it shifting to emphasize the hope of preservation and enhancement of cognitive function in late life? A fragment of an answer comes from research attempting to understand the reasons for individual variability in the extent and rate of cognitive decline. This body of work has created a sense of optimism based on evidence that there are some health behaviors that amplify cognitive performance or mitigate the rate of age-related cognitive decline. In this context, we discuss the role of physical activity on neurocognitive function in late adulthood and summarize how it can be conceptualized as a constructive approach both for the maintenance of cognitive function and as a therapeutic for enhancing or optimizing cognitive function in late life. In this way, physical activity research can be used to shape perceptions of cognitive aging. Expected final online publication date for the Annual Review of Clinical Psychology, Volume 18 is May 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.
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Affiliation(s)
- Kirk I Erickson
- Department of Psychology and Center for the Neural Basis of Cognition, University of Pittsburgh, Pittsburgh, Pennsylvania, USA; .,Centre for Healthy Ageing, Health Futures Institute, Murdoch University, Perth, Western Australia, Australia.,PROFITH "PROmoting FITness and Health through physical activity" Research Group, Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, Spain
| | - Shannon D Donofry
- Department of Psychology and Center for the Neural Basis of Cognition, University of Pittsburgh, Pittsburgh, Pennsylvania, USA; .,Psychiatry and Behavioral Health Institute, Allegheny Health Network, Pittsburgh, Pennsylvania
| | - Kelsey R Sewell
- Centre for Healthy Ageing, Health Futures Institute, Murdoch University, Perth, Western Australia, Australia
| | - Belinda M Brown
- Centre for Healthy Ageing, Health Futures Institute, Murdoch University, Perth, Western Australia, Australia
| | - Chelsea M Stillman
- Department of Psychology and Center for the Neural Basis of Cognition, University of Pittsburgh, Pittsburgh, Pennsylvania, USA;
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Potential risk groups and psychological, psychosocial, and health behavioral predictors of pharmacological neuroenhancement among university students in Germany. Sci Rep 2022; 12:937. [PMID: 35042938 PMCID: PMC8766436 DOI: 10.1038/s41598-022-04891-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 12/28/2021] [Indexed: 12/20/2022] Open
Abstract
Aiming to develop and implement intervention strategies targeting pharmacological neuroenhancement (PN) among university students more specifically, we (1) assessed the prevalence of PN among German university students, (2) identified potential sociodemographic and study-related risk groups, and (3) investigated sociodemographic, psychological, study-related psychosocial, general psychosocial and health behavior related factors predicting the 12-month prevalence of PN. Therefore, a cross-sectional online survey was administered to students of the University of Mainz, Germany. A binary logistic regression with stepwise inclusion of the five variable groups was performed to predict PN. A total number of 4351 students out of 31,213 registered students (13.9%) participated in the survey, of which N = 3984 answered the question concerning PN. Of these, 10.4% had used one substance for PN at least once in the past 12 months. The regression analysis revealed 13 variables that were significantly related to the 12-month prevalence of PN. Specifically, the group of health behavior related variables showed the strongest relationship with PN. Therefore, an approach to the prevention of PN should be multifactorial so that it addresses social conditions, as well as education on substance use and healthy behaviors in terms of non-pharmacological strategies as alternatives of PN.
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Cutuli D, Landolfo E, Petrosini L, Gelfo F. Environmental Enrichment Effects on the Brain-Derived Neurotrophic Factor Expression in Healthy Condition, Alzheimer's Disease, and Other Neurodegenerative Disorders. J Alzheimers Dis 2021; 85:975-992. [PMID: 34897089 DOI: 10.3233/jad-215193] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Brain-derived neurotrophic factor (BDNF), a protein belonging to the neurotrophin family, is known to be heavily involved in synaptic plasticity processes that support brain development, post-lesion regeneration, and cognitive performances, such as learning and memory. Evidence indicates that BDNF expression can be epigenetically regulated by environmental stimuli and thus can mediate the experience-dependent brain plasticity. Environmental enrichment (EE), an experimental paradigm based on the exposure to complex stimulations, constitutes an efficient means to investigate the effects of high-level experience on behavior, cognitive processes, and neurobiological correlates, as the BDNF expression. In fact, BDNF exerts a key role in mediating and promoting EE-induced plastic changes and functional improvements in healthy and pathological conditions. This review is specifically aimed at providing an updated framework of the available evidence on the EE effects on brain and serum BDNF levels, by taking into account both changes in protein expression and regulation of gene expression. A further purpose of the present review is analyzing the potential of BDNF regulation in coping with neurodegenerative processes characterizing Alzheimer's disease (AD), given BDNF expression alterations are described in AD patients. Moreover, attention is also paid to EE effects on BDNF expression in other neurodegenerative disease. To investigate such a topic, evidence provided by experimental studies is considered. A deeper understanding of environmental ability in modulating BDNF expression in the brain may be fundamental in designing more tuned and effective applications of complex environmental stimulations as managing approaches to AD.
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Affiliation(s)
- Debora Cutuli
- IRCCS Fondazione Santa Lucia, Rome, Italy.,Department of Psychology, University Sapienza of Rome, Rome, Italy
| | - Eugenia Landolfo
- IRCCS Fondazione Santa Lucia, Rome, Italy.,Department of Psychology, University Sapienza of Rome, Rome, Italy
| | | | - Francesca Gelfo
- IRCCS Fondazione Santa Lucia, Rome, Italy.,Department of Human Sciences, Guglielmo Marconi University, Rome, Italy
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Rodrigues SLDS, Silva JMD, Oliveira MCCD, Santana CMFD, Carvalho KM, Barbosa BJAP. Physical exercise as a non-pharmacological strategy for reducing behavioral and psychological symptoms in elderly with mild cognitive impairment and dementia: a systematic review of randomized clinical trials. ARQUIVOS DE NEURO-PSIQUIATRIA 2021; 79:1129-1137. [PMID: 34877985 DOI: 10.1590/0004-282x-anp-2020-0539] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 03/30/2021] [Indexed: 12/30/2022]
Abstract
BACKGROUND Elderly people with dementia may exhibit behavioral and psychological symptoms throughout the course of disease. Non-pharmacological therapies, such as regular physical activity, are considered strategies for managing these symptoms. OBJECTIVE The aim of this study was to investigate whether participation in physical exercise programs is effective in reducing behavioral and neuropsychiatric symptoms in elderly people with Mild Cognitive Impairment (MCI) and dementia. METHODS A literature review was carried out in MEDLINE (PubMed), SciELO, Web of Science, Scopus and SPORTDiscus databases from 2010 to 2020. The eligible studies were randomized clinical trials involving elderly people with mild cognitive impairment or dementia and assessing changes in neuropsychiatric and psychological symptoms as primary or secondary outcomes. The studies had a group with only physical exercise as an intervention compared to a control group. RESULTS Of 175 publications identified in the initial survey, only 7 studies met the eligibility criteria. Four out of 7 studies demonstrated positive effects in reducing behavioral symptoms, while the others did not report differences between gains according to the type of protocol. CONCLUSIONS Moderate to intense aerobic and muscle strengthening exercises may have a potential benefit in the management of behavioral and psychological symptoms in dementia, but studies varied in their conclusions. This review indicates the need for further intervention studies to investigate, as a primary outcome, the absolute effect of physical exercise and its impact on behavioral and psychological symptoms in elderly people with MCI dementia, especially in the early stages of the disease.
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Affiliation(s)
| | | | | | | | | | - Breno José Alencar Pires Barbosa
- Instituto de Medicina Integral Prof. Fernando Figueira, Recife PE, Brazil
- Universidade Federal de Pernambuco, Centro de Ciências Médicas, Área Acadêmica de Neuropsiquiatria, Recife PE, Brazil
- Universidade de São Paulo, Faculdade de Medicina, Departamento de Neurologia, Grupo de Neurologia Cognitiva e do Comportamento, São Paulo SP, Brazil
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32
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Li F, Geng X, Yun HJ, Haddad Y, Chen Y, Ding Y. Neuroplastic Effect of Exercise Through Astrocytes Activation and Cellular Crosstalk. Aging Dis 2021; 12:1644-1657. [PMID: 34631212 PMCID: PMC8460294 DOI: 10.14336/ad.2021.0325] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 03/25/2021] [Indexed: 12/21/2022] Open
Abstract
Physical exercise is an effective therapy for neurorehabilitation. Exercise has been shown to induce remodeling and proliferation of astrocyte. Astrocytes potentially affect the recruitment and function of neurons; they could intensify responses of neurons and bring more neurons for the process of neuroplasticity. Interactions between astrocytes, microglia and neurons modulate neuroplasticity and, subsequently, neural circuit function. These cellular interactions promote the number and function of synapses, neurogenesis, and cerebrovascular remodeling. However, the roles and crosstalk of astrocytes with neurons and microglia and any subsequent neuroplastic effects have not been studied extensively in exercise-induced settings. This article discusses the impact of physical exercise on astrocyte proliferation and highlights the interplay between astrocytes, microglia and neurons. The crosstalk between these cells may enhance neuroplasticity, leading to the neuroplastic effects of exercise.
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Affiliation(s)
- Fengwu Li
- China-America Institute of Neuroscience, Luhe Hospital, Capital Medical University, Beijing, China.
- Department of Developmental Cell Biology, Key Laboratory of Cell Biology, Ministry of Public Health, and Key Laboratory of Medical Cell Biology, Ministry of Education, China Medical University, Shenyang, China
| | - Xiaokun Geng
- China-America Institute of Neuroscience, Luhe Hospital, Capital Medical University, Beijing, China.
- Department of Neurology, Beijing Luhe Hospital, Capital Medical University, China.
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA.
| | - Ho Jun Yun
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA.
| | - Yazeed Haddad
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA.
| | - Yuhua Chen
- Department of Developmental Cell Biology, Key Laboratory of Cell Biology, Ministry of Public Health, and Key Laboratory of Medical Cell Biology, Ministry of Education, China Medical University, Shenyang, China
| | - Yuchuan Ding
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI, USA.
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