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Wan C, Shi L, Lai Y, Wu Z, Zou M, Liu Z, Meng W, Wang S. Long-term voluntary running improves cognitive ability in developing mice by modulating the cholinergic system, antioxidant ability, and BDNF/PI3K/Akt/CREB pathway. Neurosci Lett 2024; 836:137872. [PMID: 38889879 DOI: 10.1016/j.neulet.2024.137872] [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: 03/26/2024] [Revised: 05/28/2024] [Accepted: 06/07/2024] [Indexed: 06/20/2024]
Abstract
Moderate physical exercise has positive effects on memory. The present study aimed to investigate the impact of long-term exercise on spatial memory in developing mice, as well as its association with the cholinergic system, antioxidant activities, apoptosis factor, and BDNF/PI3K/Akt/CREB pathway in the brain. In this study, Y maze and Novel object recognition (NOR) tests were employed to assess the impact of long-term voluntary exercise on memory. The cholinergic system, antioxidant activities, and apoptosis factors in the brain were quantified using Elisa. Additionally, western blot analysis was conducted to determine the expression of relevant proteins in the BDNF/PI3K/Akt/CREB pathway. The findings demonstrated that prolonged voluntary wheel running exercise enhanced memory in developing mice, concomitant with increased catalase (CAT) activity and decreased malondialdehyde (MDA) levels in the brain. Moreover, it could also increase the hippocampal acetylcholine (ACh) content and suppress the expression of neuronal apoptosis protein. Additionally, exercise also upregulated the expression of brain-derived neurotrophic factor (BDNF), tropomyosin receptor kinase B (TrkB), phosphoinositide 3 kinases (PI3K), Akt, cAMP response element-binding protein (CREB), and phosphorylated cAMP response element-binding protein (p-CREB) in the hippocampus. These findings suggest that long-term voluntary wheel running exercise improves the spatial memory of developing mice by modulating the cholinergic system, antioxidant activities, apoptosis factors, and activating the BDNF/PI3K/Akt/CREB pathway.
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Affiliation(s)
- Changjian Wan
- School of Physical Education and Health, Jiangxi Science and Technology Normal University, Nanchang, China; Jiangxi Province Key Laboratory of Organic Functional Molecules, Institute of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang, China
| | - Lulu Shi
- School of Physical Education and Health, Jiangxi Science and Technology Normal University, Nanchang, China
| | - Yuying Lai
- School of Physical Education and Health, Jiangxi Science and Technology Normal University, Nanchang, China
| | - Zhuhong Wu
- School of Physical Education and Health, Jiangxi Science and Technology Normal University, Nanchang, China
| | - Mingzhe Zou
- School of Physical Education and Health, Jiangxi Science and Technology Normal University, Nanchang, China
| | - Zhibin Liu
- School of Physical Education and Health, Jiangxi Science and Technology Normal University, Nanchang, China.
| | - Wei Meng
- School of Physical Education and Health, Jiangxi Science and Technology Normal University, Nanchang, China; Jiangxi Province Key Laboratory of Organic Functional Molecules, Institute of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang, China.
| | - Songhua Wang
- School of Physical Education and Health, Jiangxi Science and Technology Normal University, Nanchang, China; Jiangxi Province Key Laboratory of Organic Functional Molecules, Institute of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang, China.
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He Y, Liu B, Yang FY, Yang Q, Xu B, Liu L, Chen Y. TAF15 downregulation contributes to the benefits of physical training on dendritic spines and working memory in aged mice. Aging Cell 2024:e14244. [PMID: 38874013 DOI: 10.1111/acel.14244] [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: 02/24/2024] [Revised: 05/15/2024] [Accepted: 06/05/2024] [Indexed: 06/15/2024] Open
Abstract
Moderate physical training has been shown to hinder age-related memory decline. While the benefits of physical training on hippocampal memory function are well-documented, little is known about its impact on working memory, which is linked to the prelimbic cortex (PrL), one major subdivision of the prefrontal cortex. Here, we examined the effects of physical training on spatial working memory in a well-established animal model of physical training, starting at 16 months of age and continuing for 5 months (running wheel 1 h/day and 5 days/week). This training strategy improved spatial working memory in aged mice (22-month-old), which was accompanied by an increased spine density and a lower TAF15 expression in the PrL. Specifically, physical training affected both thin and mushroom-type spines on PrL pyramidal cells, and prevented age-related loss of spines on selective segments of apical dendritic branches. Correlation analysis revealed that increased TAF15-expression was detrimental to the dendritic spines. However, physical training downregulated TAF15 expression in the PrL, preserving the dendritic spines on PrL pyramidal cells and improving working memory in trained aged mice. When TAF15 was overexpressed in the PrL via a viral approach, the benefits of physical training on the dendritic spines and working memory were abolished. These data suggest that physical training at a moderate pace might downregulate TAF15 expression in the PrL, which favors the dendritic spines on PrL pyramidal cells, thereby improving spatial working memory.
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Affiliation(s)
- Yun He
- Department of Anatomy, School of Medicine, Yangtze University, Jingzhou, China
| | - Benju Liu
- Department of Anatomy, School of Medicine, Yangtze University, Jingzhou, China
| | - Fu-Yuan Yang
- Health Science Center, Yangtze University, Jingzhou, China
| | - Qun Yang
- Department of Medical Imaging, School of Medicine, Yangtze University, Jingzhou, China
| | - Benke Xu
- Department of Anatomy, School of Medicine, Yangtze University, Jingzhou, China
| | - Lian Liu
- Department of Pharmacology, School of Medicine, Yangtze University, Jingzhou, China
| | - Yuncai Chen
- Department of Anatomy, School of Medicine, Yangtze University, Jingzhou, China
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Pettrey C, Kerr PL, Dickey TO. Physical Exercise as an Intervention for Depression: Evidence for Efficacy and Mu-Opioid Receptors as a Mechanism of Action. ADVANCES IN NEUROBIOLOGY 2024; 35:221-239. [PMID: 38874725 DOI: 10.1007/978-3-031-45493-6_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
Physical exercise is often cited as an important part of an intervention for depression, and there is empirical evidence to support this. However, the mechanism of action through which any potential antidepressant effects are produced is not widely understood. Recent evidence points toward the involvement of endogenous opioids, and especially the mu-opioid system, as a partial mediator of these effects. In this chapter, we discuss the current level of empirical support for physical exercise as either an adjunctive or standalone intervention for depression. We then review the extant evidence for involvement of endogenous opioids in the proposed antidepressant effects of exercise, with a focus specifically on evidence for mu-opioid system involvement.
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Affiliation(s)
| | - Patrick L Kerr
- Behavioral Medicine & Psychiatry, WVU School of Medicine, Charleston, WV, USA
| | - T O Dickey
- West Virginia University School of Medicine-Charleston, Charleston, WV, USA
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Callow DD, Pena GS, Stark CEL, Smith JC. Effects of acute aerobic exercise on mnemonic discrimination performance in older adults. J Int Neuropsychol Soc 2023; 29:519-528. [PMID: 35968853 PMCID: PMC10538177 DOI: 10.1017/s1355617722000492] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
OBJECTIVES Ample evidence suggests exercise is beneficial for hippocampal function. Furthermore, a single session of aerobic exercise provides immediate benefits to mnemonic discrimination performance, a highly hippocampal-specific memory process, in healthy younger adults. However, it is unknown if a single session of aerobic exercise alters mnemonic discrimination in older adults, who generally exhibit greater hippocampal deterioration and deficits in mnemonic discrimination performance. METHODS We conducted a within subject acute exercise study in 30 cognitively healthy and physically active older adults who underwent baseline testing and then completed two experimental visits in which they performed a mnemonic discrimination task before and after either 30 min of cycling exercise or 30 min of seated rest. Linear mixed-effects analyses were conducted in which condition order and age were controlled, time (pre vs. post) and condition (exercise vs. rest) were modeled as fixed effects, and subject as a random effect. RESULTS No significant time by condition interaction effect was found for object recognition (p = .254, η2=.01), while a significant reduction in interference was found for mnemonic discrimination performance following the exercise condition (p = .012, η2=.07). A post-intervention only analysis indicated that there was no difference between condition for object recognition (p = .186, η2=.06), but that participants had better mnemonic discrimination performance (p < .001, η2=.22) following the exercise. CONCLUSIONS Our results suggest a single session of moderate-intensity aerobic exercise may reduce interference and elicit better mnemonic discrimination performance in healthy older adults, suggesting benefits for hippocampal-specific memory function.
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Affiliation(s)
- Daniel D. Callow
- Department of Kinesiology, University of Maryland, College Park, MD, USA
- Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD, USA
| | - Gabriel S. Pena
- Department of Kinesiology, University of Maryland, College Park, MD, USA
| | - Craig E. L. Stark
- Department of Neurobiology and Behavior, University of California, Irvine, CA, USA
| | - J. Carson Smith
- Department of Kinesiology, University of Maryland, College Park, MD, USA
- Program in Neuroscience and Cognitive Science, University of Maryland, College Park, MD, USA
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Liu M, Zhu L, Guo YJ, Zhang SS, Jiang L, Zhang Y, Chao FL, Tang Y. The effects of voluntary running exercise on the astrocytes of the medial prefrontal cortex in APP/PS1 mice. J Comp Neurol 2023. [PMID: 37146123 DOI: 10.1002/cne.25485] [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: 11/27/2022] [Revised: 03/07/2023] [Accepted: 03/20/2023] [Indexed: 05/07/2023]
Abstract
Pathological changes in the medial prefrontal cortex (mPFC) and astrocytes are closely associated with Alzheimer's disease (AD). Voluntary running has been found to effectively delay AD. However, the effects of voluntary running on mPFC astrocytes in AD are unclear. A total of 40 10-month-old male amyloid precursor protein/presenilin 1 (APP/PS1) mice and 40 wild-type (WT) mice were randomly divided into control and running groups, and the running groups underwent voluntary running for 3 months. Mouse cognition was assessed by the novel object recognition (NOR), Morris water maze (MWM), and Y maze tests. The effects of voluntary running on mPFC astrocytes were investigated using immunohistochemistry, immunofluorescence, western blotting, and stereology. APP/PS1 mice performed significantly worse than WT mice in the NOR, MWM, and Y maze tests, and voluntary running improved the performance of APP/PS1 mice in these tests. The total number of mPFC astrocytes was increased, cell bodies were enlarged, and protrusion number and length were increased in AD mice compared with WT mice, but there was no difference in component 3 (C3) levels in the mPFC (total mPFC level); however, C3 and S100B levels in astrocytes were increased in AD mice. Voluntary running reduced the total number of astrocytes and S100B levels in astrocytes and increased the density of PSD95+ puncta in direct contact with astrocyte protrusions in the APP/PS1 mouse mPFC. Three months of voluntary running inhibited astrocyte hyperplasia and S100B expression in astrocytes, increased the density of synapses in contact with astrocytes, and improved cognitive function in APP/PS1 mice.
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Affiliation(s)
- Mei Liu
- Department of Histology and Embryology, School of Basic Medical Sciences, Chongqing Medical University, Chongqing, P. R. China
- Laboratory of Stem Cell and Tissue Engineering, School of Basic Medical Sciences, Chongqing Medical University, Chongqing, P. R. China
| | - Lin Zhu
- Department of Histology and Embryology, School of Basic Medical Sciences, Chongqing Medical University, Chongqing, P. R. China
- Laboratory of Stem Cell and Tissue Engineering, School of Basic Medical Sciences, Chongqing Medical University, Chongqing, P. R. China
| | - Yi-Jing Guo
- Department of Histology and Embryology, School of Basic Medical Sciences, Chongqing Medical University, Chongqing, P. R. China
- Laboratory of Stem Cell and Tissue Engineering, School of Basic Medical Sciences, Chongqing Medical University, Chongqing, P. R. China
| | - Shan-Shan Zhang
- Department of Anesthesiology, The Second Affiliated Hospital of Army Medical University, Chongqing, P. R. China
| | - Lin Jiang
- Laboratory Teaching & Management Center, Chongqing Medical University, Chongqing, P. R. China
| | - Yi Zhang
- Department of Laboratory Medicine, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, P. R. China
| | - Feng-Lei Chao
- Department of Histology and Embryology, School of Basic Medical Sciences, Chongqing Medical University, Chongqing, P. R. China
- Laboratory of Stem Cell and Tissue Engineering, School of Basic Medical Sciences, Chongqing Medical University, Chongqing, P. R. China
| | - Yong Tang
- Department of Histology and Embryology, School of Basic Medical Sciences, Chongqing Medical University, Chongqing, P. R. China
- Laboratory of Stem Cell and Tissue Engineering, School of Basic Medical Sciences, Chongqing Medical University, Chongqing, P. R. China
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Micheli L, Bertini L, Bonato A, Villanova N, Caruso C, Caruso M, Bernini R, Tirone F. Role of Hydroxytyrosol and Oleuropein in the Prevention of Aging and Related Disorders: Focus on Neurodegeneration, Skeletal Muscle Dysfunction and Gut Microbiota. Nutrients 2023; 15:1767. [PMID: 37049607 PMCID: PMC10096778 DOI: 10.3390/nu15071767] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 03/16/2023] [Accepted: 03/24/2023] [Indexed: 04/09/2023] Open
Abstract
Aging is a multi-faceted process caused by the accumulation of cellular damage over time, associated with a gradual reduction of physiological activities in cells and organs. This degeneration results in a reduced ability to adapt to homeostasis perturbations and an increased incidence of illnesses such as cognitive decline, neurodegenerative and cardiovascular diseases, cancer, diabetes, and skeletal muscle pathologies. Key features of aging include a chronic low-grade inflammation state and a decrease of the autophagic process. The Mediterranean diet has been associated with longevity and ability to counteract the onset of age-related disorders. Extra virgin olive oil, a fundamental component of this diet, contains bioactive polyphenolic compounds as hydroxytyrosol (HTyr) and oleuropein (OLE), known for their antioxidant, anti-inflammatory, and neuroprotective properties. This review is focused on brain, skeletal muscle, and gut microbiota, as these systems are known to interact at several levels. After the description of the chemistry and pharmacokinetics of HTyr and OLE, we summarize studies reporting their effects in in vivo and in vitro models of neurodegenerative diseases of the central/peripheral nervous system, adult neurogenesis and depression, senescence and lifespan, and age-related skeletal muscle disorders, as well as their impact on the composition of the gut microbiota.
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Affiliation(s)
- Laura Micheli
- Institute of Biochemistry and Cell Biology, National Research Council (IBBC-CNR), Via E. Ramarini 32, Monterotondo, 00015 Rome, Italy
| | - Laura Bertini
- Department of Ecological and Biological Sciences (DEB), University of Tuscia, Largo dell’Università, 01100 Viterbo, Italy
| | - Agnese Bonato
- Institute of Biochemistry and Cell Biology, National Research Council (IBBC-CNR), Via E. Ramarini 32, Monterotondo, 00015 Rome, Italy
| | - Noemi Villanova
- Department of Agriculture and Forest Sciences (DAFNE), University of Tuscia, Via San Camillo de Lellis, 01100 Viterbo, Italy
| | - Carla Caruso
- Department of Ecological and Biological Sciences (DEB), University of Tuscia, Largo dell’Università, 01100 Viterbo, Italy
| | - Maurizia Caruso
- Institute of Biochemistry and Cell Biology, National Research Council (IBBC-CNR), Via E. Ramarini 32, Monterotondo, 00015 Rome, Italy
| | - Roberta Bernini
- Department of Agriculture and Forest Sciences (DAFNE), University of Tuscia, Via San Camillo de Lellis, 01100 Viterbo, Italy
| | - Felice Tirone
- Institute of Biochemistry and Cell Biology, National Research Council (IBBC-CNR), Via E. Ramarini 32, Monterotondo, 00015 Rome, Italy
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Wang YY, Zhou YN, Jiang L, Wang S, Zhu L, Zhang SS, Yang H, He Q, Liu L, Xie YH, Liang X, Tang J, Chao FL, Tang Y. Long-term voluntary exercise inhibited AGE/RAGE and microglial activation and reduced the loss of dendritic spines in the hippocampi of APP/PS1 transgenic mice. Exp Neurol 2023; 363:114371. [PMID: 36871860 DOI: 10.1016/j.expneurol.2023.114371] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 02/22/2023] [Accepted: 02/28/2023] [Indexed: 03/06/2023]
Abstract
Alzheimer's disease (AD) is closely related to hippocampal synapse loss, which can be alleviated by running exercise. However, further studies are needed to determine whether running exercise reduces synapse loss in the hippocampus in an AD model by regulating microglia. Ten-month-old male wild-type mice and APP/PS1 mice were randomly divided into control and running groups. All mice in the running groups were subjected to voluntary running exercise for four months. After the behavioral tests, immunohistochemistry, stereological methods, immunofluorescence staining, 3D reconstruction, western blotting and RNA-Seq were performed. Running exercise improved the spatial learning and memory abilities of APP/PS1 mice and increased the total number of dendritic spines, the levels of the PSD-95 and Synapsin Ia/b proteins, the colocalization of PSD-95 and neuronal dendrites (MAP-2) and the number of PSD-95-contacting astrocytes (GFAP) in the hippocampi of APP/PS1 mice. Moreover, running exercise reduced the relative expression of CD68 and Iba-1, the number of Iba-1+ microglia and the colocalization of PSD-95 and Iba-1+ microglia in the hippocampi of APP/PS1 mice. The RNA-Seq results showed that some differentially expressed genes (DEGs) related to the complement system (Cd59b, Serping1, Cfh, A2m, and Trem2) were upregulated in the hippocampi of APP/PS1 mice, while running exercise downregulated the C3 gene. At the protein level, running exercise also reduced the expression of advanced glycation end products (AGEs), receptor for advanced glycation end products (RAGE), C1q and C3 in the hippocampus and AGEs and RAGE in hippocampal microglia in APP/PS1 mice. Furthermore, the Col6a3, Scn5a, Cxcl5, Tdg and Clec4n genes were upregulated in the hippocampi of APP/PS1 mice but downregulated after running, and these genes were associated with the C3 and RAGE genes according to protein-protein interaction (PPI) analysis. These findings indicate that long-term voluntary exercise might protect hippocampal synapses and affect the function and activation of microglia, the AGE/RAGE signaling pathway in microglia and the C1q/C3 complement system in the hippocampus in APP/PS1 mice, and these effects may be related to the Col6a3, Scn5a, Cxcl5, Tdg and Clec4n genes. The current results provide an important basis for identifying targets for the prevention and treatment of AD.
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Affiliation(s)
- Yi-Ying Wang
- Department of Histology and Embryology, Faculty of Basic Medical College, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical College, Chongqing Medical University, Chongqing 400016, PR China
| | - Yu-Ning Zhou
- Department of Histology and Embryology, Faculty of Basic Medical College, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical College, Chongqing Medical University, Chongqing 400016, PR China
| | - Lin Jiang
- Lab Teaching & Management Center, Chongqing Medical University, Chongqing 400016, PR China
| | - Shun Wang
- Department of Histology and Embryology, Faculty of Basic Medical College, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical College, Chongqing Medical University, Chongqing 400016, PR China
| | - Lin Zhu
- Department of Histology and Embryology, Faculty of Basic Medical College, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical College, Chongqing Medical University, Chongqing 400016, PR China
| | - Shan-Shan Zhang
- Department of Histology and Embryology, Faculty of Basic Medical College, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical College, Chongqing Medical University, Chongqing 400016, PR China
| | - Hao Yang
- Department of Histology and Embryology, Faculty of Basic Medical College, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical College, Chongqing Medical University, Chongqing 400016, PR China
| | - Qi He
- Department of Histology and Embryology, Faculty of Basic Medical College, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical College, Chongqing Medical University, Chongqing 400016, PR China
| | - Li Liu
- Department of Histology and Embryology, Faculty of Basic Medical College, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical College, Chongqing Medical University, Chongqing 400016, PR China
| | - Yu-Han Xie
- Department of Histology and Embryology, Faculty of Basic Medical College, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical College, Chongqing Medical University, Chongqing 400016, PR China
| | - Xin Liang
- Department of Pathophysiology, Faculty of Basic Medical College, Chongqing Medical University, Chongqing 400016, PR China
| | - Jing Tang
- Department of Histology and Embryology, Faculty of Basic Medical College, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical College, Chongqing Medical University, Chongqing 400016, PR China
| | - Feng-Lei Chao
- Department of Histology and Embryology, Faculty of Basic Medical College, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical College, Chongqing Medical University, Chongqing 400016, PR China.
| | - Yong Tang
- Department of Histology and Embryology, Faculty of Basic Medical College, Chongqing Medical University, Chongqing 400016, PR China; Laboratory of Stem Cell and Tissue Engineering, Faculty of Basic Medical College, Chongqing Medical University, Chongqing 400016, PR China.
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Dong TN, Kramár EA, Beardwood JH, Al-Shammari A, Wood MA, Keiser AA. Temporal endurance of exercise-induced benefits on hippocampus-dependent memory and synaptic plasticity in female mice. Neurobiol Learn Mem 2022; 194:107658. [PMID: 35811066 PMCID: PMC9901197 DOI: 10.1016/j.nlm.2022.107658] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 05/20/2022] [Accepted: 07/04/2022] [Indexed: 02/08/2023]
Abstract
Exercise facilitates hippocampal neurogenesis and neuroplasticity that in turn, promotes cognitive function. Our previous studies have demonstrated that in male mice, voluntary exercise enables hippocampus-dependent learning in conditions that are normally subthreshold for long-term memory formation in sedentary animals. Such cognitive enhancement can be maintained long after exercise has ceased and can be re-engaged by a subsequent subthreshold exercise session, suggesting exercise-induced benefits are temporally dynamic. In females, the extent to which the benefits of exercise can be maintained and the mechanisms underlying this maintenance have yet to be defined. Here, we examined the exercise parameters required to initiate and maintain the benefits of exercise in female C57BL/6J mice. Using a subthreshold version of the hippocampus-dependent task called object-location memory (OLM) task, we show that 14d of voluntary exercise enables learning under subthreshold acquisition conditions in female mice. Following the initial exercise, a 7d sedentary delay results in diminished performance, which can be re-facilitated when animals receive 2d of reactivating exercise following the sedentary delay. Assessment of estrous cycle reveals enhanced wheel running activity during the estrus phase relative to the diestrus phase, whereas estrous phase on training or test had no effect on OLM performance. Utilizing the same exercise parameters, we demonstrate that 14d of exercise enhances long-term potentiation (LTP) in the CA1 region of the hippocampus, an effect that persists throughout the sedentary delay and following the reactivating exercise session. Previous studies have proposed exercise-induced BDNF upregulation as the mechanism underlying exercise-mediated benefits on synaptic plasticity and cognition. However, our assessment of hippocampal Bdnf mRNA expression following memory retrieval reveals no difference between exercise conditions and control, suggesting that persistent Bdnf upregulation may not be required for maintenance of exercise-induced benefits. Together, our data indicate that 14d of voluntary exercise can initiate long-lasting benefits on neuroplasticity and cognitive function in female mice, establishing the first evidence on the temporal endurance of exercise-induced benefits in females.
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Affiliation(s)
- T N Dong
- Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY 10029, United States
| | - E A Kramár
- Department of Neurobiology and Behavior, School of Biological Sciences University of California, Irvine 92697-2695, United States; Center for the Neurobiology of Learning and Memory (CNLM), University of California, Irvine 92697-2695, United States; Institute for Memory Impairments and Neurological Disorders (UCI MIND), University of California, Irvine 92697-2695, United States
| | - J H Beardwood
- Department of Neurobiology and Behavior, School of Biological Sciences University of California, Irvine 92697-2695, United States; Center for the Neurobiology of Learning and Memory (CNLM), University of California, Irvine 92697-2695, United States; Institute for Memory Impairments and Neurological Disorders (UCI MIND), University of California, Irvine 92697-2695, United States
| | - A Al-Shammari
- Department of Neurobiology and Behavior, School of Biological Sciences University of California, Irvine 92697-2695, United States; Center for the Neurobiology of Learning and Memory (CNLM), University of California, Irvine 92697-2695, United States; Institute for Memory Impairments and Neurological Disorders (UCI MIND), University of California, Irvine 92697-2695, United States
| | - M A Wood
- Department of Neurobiology and Behavior, School of Biological Sciences University of California, Irvine 92697-2695, United States; Center for the Neurobiology of Learning and Memory (CNLM), University of California, Irvine 92697-2695, United States; Institute for Memory Impairments and Neurological Disorders (UCI MIND), University of California, Irvine 92697-2695, United States
| | - A A Keiser
- Department of Neurobiology and Behavior, School of Biological Sciences University of California, Irvine 92697-2695, United States; Center for the Neurobiology of Learning and Memory (CNLM), University of California, Irvine 92697-2695, United States; Institute for Memory Impairments and Neurological Disorders (UCI MIND), University of California, Irvine 92697-2695, United States.
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Valenzuela M, Duncan T, Abey A, Johnson A, Boulamatsis C, Dalton MA, Jacobson E, Brunel L, Child G, Simpson D, Buckland M, Lowe A, Siette J, Westbrook F, McGreevy P. Autologous skin-derived neural precursor cell therapy reverses canine Alzheimer dementia-like syndrome in a proof of concept veterinary trial. Stem Cell Res Ther 2022; 13:261. [PMID: 35715872 PMCID: PMC9205057 DOI: 10.1186/s13287-022-02933-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Accepted: 06/01/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Older companion dogs naturally develop a dementia-like syndrome with biological, clinical and therapeutic similarities to Alzheimer disease (AD). Given there has been no new safe, clinically effective and widely accessible treatment for AD for almost 20 years, an all-new cell therapeutic approach was trialled in canine veterinary patients, and further modelled in aged rats for more detailed neurobiological analysis. METHODS A Phase 1/2A veterinary trial was conducted in N = 6 older companion dogs with definitive diagnosis of Canine Cognitive Dysfunction (CCD). Treatment comprised direct microinjection of 250,000 autologous skin-derived neuroprecursors (SKNs) into the bilateral hippocampus using MRI-guided stereotaxis. Safety was assessed clinically and efficacy using the validated Canine Cognitive Dysfunction Rating Scale (CCDR) at baseline and 3-month post treatment. Intention to treat analysis imputed a single patient that had a surgical adverse event requiring euthanasia. Three dog brains were donated following natural death and histology carried out to quantify Alzheimer pathology as well as immature neurons and synapses; these were compared to a brain bank (N = 12) of untreated aged dogs with and without CCD. Further, an age-related memory dysfunction rat model (N = 16) was used to more closely evaluate intrahippocampal engraftment of canine SKN cells, focusing on mnemonic and synaptic effects as well as donor cell survival, neurodifferentation and electrophysiologic circuit integration in a live hippocampal slice preparation. RESULTS Four out-of-five dogs improved on the primary clinical CCDR endpoint, three fell below diagnostic threshold, and remarkably, two underwent full syndromal reversal lasting up to 2 years. At post mortem, synaptic density in the hippocampus specifically was nine standard deviations above non-treated dogs, and intensity of new neurons also several fold higher. There was no impact on AD pathology or long-term safety signals. Modelling in aged rats replicated the main canine trial findings: hippocampally-dependent place memory deficits were reversed and synaptic depletion rescued. In addition, this model confirmed donor cell survival and migration throughout the hippocampus, neuronal differentiation in situ, and physiologically-correct integration into pyramidal layer circuits. CONCLUSIONS With further development, SKN cell therapy may have potential for treating carefully chosen AD patients based on neurosynaptic restoration in the hippocampus.
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Affiliation(s)
- Michael Valenzuela
- Skin2Neuron Pty Ltd, Sydney, Australia.
- University of New South Wales, Sydney, Australia.
| | - T Duncan
- University of New South Wales, Sydney, Australia
| | - A Abey
- University of Sydney, Sydney, Australia
| | - A Johnson
- Skin2Neuron Pty Ltd, Sydney, Australia
| | | | | | - E Jacobson
- Sydney Children's Hospital, Sydney, Australia
| | - L Brunel
- University of Sydney, Sydney, Australia
| | - G Child
- University of Sydney, Sydney, Australia
| | - D Simpson
- Animal Referral Hospital Homebush, Sydney, Australia
| | - M Buckland
- University of Sydney, Sydney, Australia
- Royal Prince Alfred Hospital, Sydney, Australia
| | - A Lowe
- University of New South Wales, Sydney, Australia
| | - J Siette
- Western Sydney University, Sydney, Australia
| | - F Westbrook
- University of New South Wales, Sydney, Australia
| | - P McGreevy
- University of New England, Armidale, Australia
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10
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Xu B, He Y, Liu L, Ye G, Chen L, Wang Q, Chen M, Chen Y, Long D. The Effects of Physical Running on Dendritic Spines and Amyloid-beta Pathology in 3xTg-AD Male Mice. Aging Dis 2022; 13:1293-1310. [PMID: 35855335 PMCID: PMC9286906 DOI: 10.14336/ad.2022.0110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 01/10/2022] [Indexed: 11/01/2022] Open
Abstract
Memory loss is the key symptom of Alzheimer's disease (AD). As successful drug treatments have not yet been identified, non-pharmaceutical interventions such as physical exercise and training have been employed to improve the memory function of people with dementia. We investigated the effect of prolonged physical running on hippocampal-dependent spatial memory and its underlying mechanisms using a well-established rodent model of AD. 3xTg-AD transgenic mice and non-transgenic mice were subjected to voluntary wheel running for 5 months (1 hour per day, 5 days per week), followed by spatial memory testing. After the behavioral testing, dendritic spines, synapses, and synaptic proteins as well as amyloid-beta (Aβ) pathology were analyzed in the dorsal hippocampi. Running improved hippocampal-dependent spatial memory in 3xTg-AD mice. This running strategy prevented both thin and mushroom-type spines on CA1 pyramidal cells in 3xTg-AD mice, whereas the effects of running in non-transgenic mice were limited to thin spines. The enormous effects of running on spines were accompanied by an increased number of synapses and upregulated expression of synaptic proteins. Notably, running downregulated the processing of amyloid precursor protein, decreasing intracellular APP expression and extracellular Aβ accumulation, and spatial memory performance correlated with levels of Aβ peptides Aβ1-40 and Aβ1-42. These data suggest that prolonged running may improve memory in preclinical AD via slowing down the amyloid pathology and preventing the loss of synaptic contacts.
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Affiliation(s)
- Benke Xu
- Department of Human Anatomy, School of Basic Medical Sciences, Yangtze University, Hubei 434023, China.
| | - Yun He
- Department of Human Anatomy, School of Basic Medical Sciences, Yangtze University, Hubei 434023, China.
| | - Lian Liu
- Department of Pharmacology, School of Basic Medical Sciences, Yangtze University, Hubei 434023, China.
| | - Guosheng Ye
- Key Lab of Neuroscience, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou 511436, China.
| | - Lulu Chen
- Key Lab of Neuroscience, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou 511436, China.
| | - Qingning Wang
- Key Lab of Neuroscience, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou 511436, China.
| | - Michael Chen
- University of California, Los Angeles, CA 90095, USA.
| | - Yuncai Chen
- Department of Pediatrics, University of California, Irvine, CA 92697, USA.
- Correspondence should be addressed to: Dr. Dahong Long, Key Lab of Neuroscience, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou 511436, China. E-mail: or Dr. Yuncai Chen, Department of Pediatrics, University of California-Irvine, Irvine, California 92697, USA. E-mail:
| | - Dahong Long
- Key Lab of Neuroscience, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou 511436, China.
- Correspondence should be addressed to: Dr. Dahong Long, Key Lab of Neuroscience, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou 511436, China. E-mail: or Dr. Yuncai Chen, Department of Pediatrics, University of California-Irvine, Irvine, California 92697, USA. E-mail:
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11
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Micheli L, Creanza TM, Ceccarelli M, D'Andrea G, Giacovazzo G, Ancona N, Coccurello R, Scardigli R, Tirone F. Transcriptome Analysis in a Mouse Model of Premature Aging of Dentate Gyrus: Rescue of Alpha-Synuclein Deficit by Virus-Driven Expression or by Running Restores the Defective Neurogenesis. Front Cell Dev Biol 2021; 9:696684. [PMID: 34485283 PMCID: PMC8415876 DOI: 10.3389/fcell.2021.696684] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 07/21/2021] [Indexed: 02/05/2023] Open
Abstract
The dentate gyrus of the hippocampus and the subventricular zone are neurogenic niches where neural stem and progenitor cells replicate throughout life to generate new neurons. The Btg1 gene maintains the stem cells of the neurogenic niches in quiescence. The deletion of Btg1 leads to an early transient increase of stem/progenitor cells division, followed, however, by a decrease during adulthood of their proliferative capability, accompanied by apoptosis. Since a physiological decrease of neurogenesis occurs during aging, the Btg1 knockout mouse may represent a model of neural aging. We have previously observed that the defective neurogenesis of the Btg1 knockout model is rescued by the powerful neurogenic stimulus of physical exercise (running). To identify genes responsible for stem and progenitor cells maintenance, we sought here to find genes underlying this premature neural aging, and whose deregulated expression could be rescued by running. Through RNA sequencing we analyzed the transcriptomic profiles of the dentate gyrus isolated from Btg1 wild-type or Btg1 knockout adult (2-month-old) mice submitted to physical exercise or sedentary. In Btg1 knockout mice, 545 genes were deregulated, relative to wild-type, while 2081 genes were deregulated by running. We identified 42 genes whose expression was not only down-regulated in the dentate gyrus of Btg1 knockout, but was also counter-regulated to control levels by running in Btg1 knockout mice, vs. sedentary. Among these 42 counter-regulated genes, alpha-synuclein (Snca), Fos, Arc and Npas4 showed significantly greater differential regulation. These genes control neural proliferation, apoptosis, plasticity and memory and are involved in aging. In particular, Snca expression decreases during aging. We tested, therefore, whether an Snca-expressing lentivirus, by rescuing the defective Snca levels in the dentate gyrus of Btg1 knockout mice, could also reverse the aging phenotype, in particular the defective neurogenesis. We found that the exogenous expression of Snca reversed the Btg1 knockout-dependent decrease of stem cell proliferation as well as the increase of progenitor cell apoptosis. This indicates that Snca has a functional role in the process of neural aging observed in this model, and also suggests that Snca acts as a positive regulator of stem cell maintenance.
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Affiliation(s)
- Laura Micheli
- Institute of Biochemistry and Cell Biology, National Research Council, Rome, Italy
| | - Teresa Maria Creanza
- Institute of Intelligent Industrial Technologies and Systems for Advanced Manufacturing, National Research Council, Bari, Italy
| | - Manuela Ceccarelli
- Institute of Biochemistry and Cell Biology, National Research Council, Rome, Italy
| | - Giorgio D'Andrea
- Institute of Biochemistry and Cell Biology, National Research Council, Rome, Italy
| | - Giacomo Giacovazzo
- Preclinical Neuroscience, European Center for Brain Research (CERC)/IRCCS Santa Lucia Foundation, Rome, Italy
| | - Nicola Ancona
- Institute of Intelligent Industrial Technologies and Systems for Advanced Manufacturing, National Research Council, Bari, Italy
| | - Roberto Coccurello
- Preclinical Neuroscience, European Center for Brain Research (CERC)/IRCCS Santa Lucia Foundation, Rome, Italy.,Institute for Complex Systems, National Research Council, Rome, Italy
| | - Raffaella Scardigli
- Institute of Translational Pharmacology, National Research Council, Rome, Italy
| | - Felice Tirone
- Institute of Biochemistry and Cell Biology, National Research Council, Rome, Italy
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12
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Li W, Xu X, Wu F, Ni Y, Lan J, Hu X. Comparative efficacy of non-pharmacological interventions on behavioural and psychological symptoms in elders with dementia: A network meta-analysis. Nurs Open 2021; 8:2922-2931. [PMID: 34472717 PMCID: PMC8510770 DOI: 10.1002/nop2.1049] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 07/22/2021] [Accepted: 08/04/2021] [Indexed: 02/05/2023] Open
Abstract
Aim To explore the best non‐pharmaceutical interventions for improving the behavioural and psychological symptoms in elders with dementia. Design Bayesian network meta‐analysis. Methods A comprehensive electronic literature search was performed in five English databases and four Chinese databases to identify relevant randomized controlled trials (RCTs) that were published up to 31 October 2019. Results A total of 41 RCTs were included in this network meta‐analysis involving 5 different non‐pharmacological interventions: therapeutic recreation (TC), reminiscence therapy (RT), behaviour therapy (BT), massage therapy (MT) and individualized nursing (IN).The results of network meta‐analysis showed that individualized nursing was the best in improving depression, cognitive function, and activities of daily living of behavioural and psychological symptoms of dementia. Behaviour therapy was the best in improving anxiety symptoms. Reminiscence therapy was the best in improving neuropsychiatric symptoms.
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Affiliation(s)
- Wenjie Li
- West China School of Nursing, Sichuan University, Chengdu, China
| | - Xiaofeng Xu
- Trauma Center Ward 2 of West China Hospital/West China School of Nursing, Sichuan University, Chengdu, China
| | - Fen Wu
- West China School of Nursing, Sichuan University, Chengdu, China
| | - Yuanyuan Ni
- School of Nursing, Changzhi Medical College, Shanxi, China
| | - Jun Lan
- Department of Orthopedics Surgery, Chongqing General Hospital, University of Chinese Academy of Sciences (UCAS), Beijing, China
| | - Xiuying Hu
- Innovation Center of Nursing Research, West China School of Medicine/West China Hospital, Sichuan University, Chengdu, China.,Nursing Key Laboratory of Sichuan Province, Sichuan University, Chengdu, China
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13
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Ramis MR, Sarubbo F, Moranta D, Tejada S, Lladó J, Miralles A, Esteban S. Neurochemical and Cognitive Beneficial Effects of Moderate Physical Activity and Catechin in Aged Rats. Antioxidants (Basel) 2021; 10:antiox10040621. [PMID: 33921628 PMCID: PMC8072822 DOI: 10.3390/antiox10040621] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 04/13/2021] [Accepted: 04/16/2021] [Indexed: 12/12/2022] Open
Abstract
A healthy aging process is a requirement for good life quality. A relationship between physical activity, the consumption of antioxidants and brain health has been stablished via the activation of pathways that reduce the harmful effects of oxidative stress, by inducing enzymes such as SIRT1, which is a protector of brain function. We analyzed the cognitive and neurochemical effects of applying physical exercise in elderly rats, alone or in combination with the antioxidant catechin. Several tests of spatial and episodic memory and motor coordination were evaluated. In addition, brain monoaminergic neurotransmitters and SIRT1 protein levels were assessed in the brains of the same rats. The results show that physical activity by itself improved age-related memory and learning deficits, correlating with the restoration of brain monoaminergic neurotransmitters and SIRT1 protein levels in the hippocampus. The administration of the antioxidant catechin along with the exercise program enhanced further the monoaminergic pathways, but not the other parameters studied. These results agree with previous reports revealing a neuroprotective effect of physical activity, probably based on its ability to improve the redox status of the brain, demonstrating that exercise at an advanced age, combined with the consumption of antioxidants, could produce favorable effects in terms of brain health.
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Affiliation(s)
- Margarita R. Ramis
- Laboratory of Neurophysiology, Biology Department, University of Balearic Islands (UIB), Ctra. Valldemossa Km 7.5, E-07122 Palma de Mallorca, Spain; (M.R.R.); (F.S.); (D.M.); (S.T.); (A.M.)
| | - Fiorella Sarubbo
- Laboratory of Neurophysiology, Biology Department, University of Balearic Islands (UIB), Ctra. Valldemossa Km 7.5, E-07122 Palma de Mallorca, Spain; (M.R.R.); (F.S.); (D.M.); (S.T.); (A.M.)
- Research Unit, University Hospital Son Llàtzer, Crta. Manacor Km 4, 07198 Palma, Spain
| | - David Moranta
- Laboratory of Neurophysiology, Biology Department, University of Balearic Islands (UIB), Ctra. Valldemossa Km 7.5, E-07122 Palma de Mallorca, Spain; (M.R.R.); (F.S.); (D.M.); (S.T.); (A.M.)
| | - Silvia Tejada
- Laboratory of Neurophysiology, Biology Department, University of Balearic Islands (UIB), Ctra. Valldemossa Km 7.5, E-07122 Palma de Mallorca, Spain; (M.R.R.); (F.S.); (D.M.); (S.T.); (A.M.)
- CIBERON (Physiopathology of Obesity and Nutrition), 28029 Madrid, Spain
- Health Research Institute of the Balearic Islands (IdISBa), 07120 Palma, Spain
| | - Jerònia Lladó
- Department of Biology and University Institute of Health Sciences Research (IUNICS-IdISBa), University of Balearic Islands, 07122 Palma, Spain;
| | - Antoni Miralles
- Laboratory of Neurophysiology, Biology Department, University of Balearic Islands (UIB), Ctra. Valldemossa Km 7.5, E-07122 Palma de Mallorca, Spain; (M.R.R.); (F.S.); (D.M.); (S.T.); (A.M.)
- Health Research Institute of the Balearic Islands (IdISBa), 07120 Palma, Spain
| | - Susana Esteban
- Laboratory of Neurophysiology, Biology Department, University of Balearic Islands (UIB), Ctra. Valldemossa Km 7.5, E-07122 Palma de Mallorca, Spain; (M.R.R.); (F.S.); (D.M.); (S.T.); (A.M.)
- Health Research Institute of the Balearic Islands (IdISBa), 07120 Palma, Spain
- Correspondence: ; Tel.: +34-971-173-145
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14
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Zhong X, Yan X, Liang H, Xia R, Chen B, Zhao HJ. Evaluation of eight-style Tai chi on cognitive function in patients with cognitive impairment of cerebral small vessel disease: study protocol for a randomised controlled trial. BMJ Open 2021; 11:e042177. [PMID: 33558352 PMCID: PMC7871699 DOI: 10.1136/bmjopen-2020-042177] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
INTRODUCTION Cerebral small vessel disease (CSVD) is a critical factor that causes cognitive decline and progresses to vascular dementia and acute cerebrovascular events. Tai chi has been proven to improve nerve plasticity formation and directly improve cognitive function compared with other sports therapy, which has shown its unique advantages. However, more medical evidence needs to be collected in order to verify that Tai chi exercises can improve cognitive impairment due to CSVD. The main purposes of this study are to investigate the effect of Tai chi exercise on neuropsychological outcomes of patients with cognitive impairment related to CSVD and to explore its mechanism of action with neuroimaging, including functional MRI (fMRI) and event-related potential (P300). METHODS AND ANALYSIS The design of this study is a randomised controlled trial with two parallel groups in a 1:1 allocation ratio with allocation concealment and assessor blinding. A total of 106 participants will be enrolled and randomised to the 24-week Tai chi exercise intervention group and 24-week health education control group. Global cognitive function and the specific domains of cognition (memory, processing speed, executive function, attention and verbal learning and memory) will be assessed at baseline and 12 and 24 weeks after randomisation. At the same time, fMRI and P300 will be measured the structure and function of brain regions related to cognitive function at baseline and 24 weeks after randomisation. Recruitment is currently ongoing (recruitment began on 9 November 2020). The approximate completion date for recruitment is in April 2021, and we anticipate to complete the study by December 2021. ETHICS AND DISSEMINATION Ethics approval was given by the Medical Ethics Committee of the Affiliated People's Hospital of Fujian University of Traditional Chinese Medicine (approval number: 2019-058-04). The findings will be disseminated through peer-reviewed publications and at scientific conferences. TRIAL REGISTRATION NUMBER ChiCTR2000033176; Pre-results.
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Affiliation(s)
- Xiaoyong Zhong
- Department of Neurology, The Affiliated People's Hospital of Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Xinghui Yan
- Department of Physical Education, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Hui Liang
- Department of Neurology, The Affiliated People's Hospital of Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Rui Xia
- College of Rehabilitation Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Bin Chen
- Department of Rehabilitation, The Affiliated People's Hospital of Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Hong-Jia Zhao
- The Affiliated People's Hospital of Fujian University of Traditional Chinese Medicine, Fuzhou, China
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15
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Gronek P, Haas AN, Czarny W, Podstawski R, Delabary MDS, Clark CCT, Boraczyński M, Tarnas M, Wycichowska P, Pawlaczyk M, Gronek J. The Mechanism of Physical Activity-induced Amelioration of Parkinson's Disease: A Narrative Review. Aging Dis 2021; 12:192-202. [PMID: 33532136 PMCID: PMC7801266 DOI: 10.14336/ad.2020.0407] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 04/07/2020] [Indexed: 12/18/2022] Open
Abstract
Physical activity, together with its ameliorative effects on Parkinson's disease (PD) symptoms, remains a relatively unappreciated factor which may be beneficial for the treatment outcome. Contemporary evidence supports the positive effects of non-pharmacological approaches to PD symptom management, in particular the effects of the exercise on both, motor and non-motor symptoms. The aim of the study was to review the mechanisms of exercise-induced amelioration of PD symptoms. Methods: Electronic databases (PubMed, Web of Science and Google Scholar) were searched using the following key words: "Parkinson and physical activity" OR "Parkinson disease and exercise" OR "Parkinson disease and lifestyle factors" OR "Parkinson disease and longevity". A total of 97 studies which investigated PD genetics and various forms of exercise and their etiologic impact on PD were reviewed. The studies were subdivided into four topic groups: 1) genetics of PD, 2) exercise and the brain, 3) physical activity and PD, 4) mind-body interventions, and discussed accordingly. Adequate levels of physical activity are associated with higher quality of life in PD patients. Physical activity may have protective and stimulatory effects for better functional efficiency in higher-level cognitive networks. It can also improve balance and motor functions by improving muscle strength. Given the etiologic evidence of the beneficial effects of physical activity on PD, albeit tentative, a concerted effort to elucidate the processes and outcomes of physical activity on ameliorating symptoms of PD must be undertaken.
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Affiliation(s)
- Piotr Gronek
- Laboratory of Genetics, Department of Health Sciences, Poznań University of Physical Education, Poznań, Poland.
| | - Aline Nogueira Haas
- School of Physical Education, Physiotherapy and Dance, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
| | - Wojciech Czarny
- Department of Human Sciences, University of Rzeszów, Poland.
| | - Robert Podstawski
- Department of Tourism, Recreation and Ecology, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland.
| | - Marcela do Santos Delabary
- School of Physical Education, Physiotherapy and Dance, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
| | - Cain CT Clark
- Faculty of Health and Life Sciences, Coventry University, Coventry, United Kingdom.
| | | | - Maria Tarnas
- Laboratory of Genetics, Department of Health Sciences, Poznań University of Physical Education, Poznań, Poland.
| | - Paulina Wycichowska
- Laboratory of Genetics, Department of Health Sciences, Poznań University of Physical Education, Poznań, Poland.
| | - Mariola Pawlaczyk
- Department of Geriatric Medicine and Gerontology, Poznań University of Medical Sciences, Poznań, Poland.
| | - Joanna Gronek
- Laboratory of Genetics, Department of Health Sciences, Poznań University of Physical Education, Poznań, Poland.
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16
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Huang L, Zhou H, Chen K, Chen X, Yang G. Learning-Dependent Dendritic Spine Plasticity Is Reduced in the Aged Mouse Cortex. Front Neural Circuits 2020; 14:581435. [PMID: 33324172 PMCID: PMC7726160 DOI: 10.3389/fncir.2020.581435] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 11/05/2020] [Indexed: 11/13/2022] Open
Abstract
Aging is accompanied by a progressive decrease in learning and memory function. Synaptic loss, one of the hallmarks of normal aging, likely plays an important role in age-related cognitive decline. But little is known about the impact of advanced age on synaptic plasticity and neuronal function in vivo. In this study, we examined the structural dynamics of postsynaptic dendritic spines as well as calcium activity of layer 5 pyramidal neurons in the cerebral cortex of young and old mice. Using transcranial two-photon microscopy, we found that in both sensory and motor cortices, the elimination rates of dendritic spines were comparable between young (3-5 months) and mature adults (8-10 months), but seemed higher in old mice (>20 months), contributing to a reduction of total spine number in the old brain. During the process of motor learning, old mice compared to young mice had fewer new spines formed in the primary motor cortex. Motor training-evoked somatic calcium activity in layer 5 pyramidal neurons of the motor cortex was also lower in old than young mice, which was associated with the decline of motor learning ability during aging. Together, these results demonstrate the effects of aging on learning-dependent synapse remodeling and neuronal activity in the living cortex and suggest that synaptic deficits may contribute to age-related learning impairment.
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Affiliation(s)
- Lianyan Huang
- Department of Anesthesiology, New York University School of Medicine, New York, NY, United States.,Guangdong Provincial Key Laboratory of Brain Function and Disease, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - Hang Zhou
- Department of Anesthesiology, Columbia University Medical Center, New York, NY, United States
| | - Kai Chen
- Department of Anesthesiology, Columbia University Medical Center, New York, NY, United States
| | - Xiao Chen
- Guangdong Provincial Key Laboratory of Brain Function and Disease, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - Guang Yang
- Department of Anesthesiology, New York University School of Medicine, New York, NY, United States.,Department of Anesthesiology, Columbia University Medical Center, New York, NY, United States
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17
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Morovatdar N, Di Napoli M, Stranges S, Thrift AG, Kapral M, Behrouz R, Farzadfard MT, Andalibi MSS, Oskooie RR, Sawant A, Mokhber N, Azarpazhooh MR. Regular physical activity postpones age of occurrence of first-ever stroke and improves long-term outcomes. Neurol Sci 2020; 42:3203-3210. [PMID: 33241533 DOI: 10.1007/s10072-020-04903-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 11/11/2020] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Few data are available on the associations between the level of pre-stroke physical activity and long-term outcomes in patients with stroke. This study is designed to assess the associations between pre-stroke physical activity and age of first-ever stroke occurrence and long-term outcomes. METHODS Six hundred twenty-four cases with first-ever stroke were recruited from the Mashhad Stroke Incidence Study a prospective population-based cohort in Iran. Data on Physical Activity Level (PAL) were collected retrospectively and were available in 395 cases. According to the PAL values, subjects were classified as inactive (PAL < 1.70) and active (PAL ≥ 1.70). Age at onset of stroke was compared between active and inactive groups. Using logistic model, we assessed association between pre-stroke physical activity and long-term (5-year) mortality, recurrence, disability, and functional dependency rates. We used multiple imputation to analyze missing data. RESULTS Inactive patients (PAL < 1.70) were more than 6 years younger at their age of first-ever-stroke occurrence (60.7 ± 15.5) than active patients (67.0 ± 13.2; p < 0.001). Patients with PAL< 1.7 also had a greater risk of mortality at 1 year [adjusted odds ratio (aOR) = 2.31; 95%CI: 1.14-4.67, p = 0.02] and 5 years after stroke (aOR = 1.81; 95%CI: 1.05-3.14, p = 0.03) than patients who were more physically active. Recurrence rate, disability, and functional dependency were not statistically different between two groups. Missing data analysis also showed a higher odds of death at one and 5 years for inactive patients. CONCLUSIONS In our cohort, we observed a younger age of stroke and a higher odds of 1- and 5-year mortality among those with less physical activity. This is an important health promotion strategy to encourage people to remain physically active.
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Affiliation(s)
- Negar Morovatdar
- Clinical Research Development Unit, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mario Di Napoli
- Department of Neurology and Stroke Unit, San Camillo de' Lellis General Hospital, Rieti, Italy.,Neurological Section, Neuro-epidemiology Unit, SMDN-Centre for Cardiovascular Medicine and Cerebrovascular Disease Prevention, Sulmona, L'Aquila, Italy
| | - Saverio Stranges
- Department of Epidemiology & Biostatistics, Western University, London, Canada.,Department of Family Medicine, Western University, London, Canada.,Department of Population Health, Luxembourg Institute of Health, Strassen, Luxembourg
| | - Amanda G Thrift
- Stroke and Ageing Research, Department of Medicine, School of Clinical Sciences at Monash Health, Monash University, Clayton, Victoria, Australia
| | - Moira Kapral
- Department of Medicine and Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Canada.,Institute for Clinical Evaluative Sciences, Toronto, Canada
| | - Reza Behrouz
- Department of Neurology, Lozano-Long School of Medicine, University of Texas Health, San Antonio, TX, USA
| | | | | | - Reza Rahimzadeh Oskooie
- Student Research Committee, Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Anuradha Sawant
- Department of Clinical Neurological Science, University Hospital, Western University, London, Canada
| | - Naghmeh Mokhber
- Department of Psychiatry, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Psychiatry & Behavioral Neurosciences, Western University, London, Canada
| | - M Reza Azarpazhooh
- Department of Epidemiology & Biostatistics, Western University, London, Canada. .,Department of Neurology, Ghaem Hospital, Mashhad University of Medical Sciences, Mashhad, Iran. .,Department of Clinical Neurological Science, University Hospital, Western University, London, Canada.
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Pillai MR, Keylock KT, Cromwell HC, Meserve LA. Exercise influences the impact of polychlorinated biphenyl exposure on immune function. PLoS One 2020; 15:e0237705. [PMID: 32833973 PMCID: PMC7444807 DOI: 10.1371/journal.pone.0237705] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Accepted: 07/25/2020] [Indexed: 12/17/2022] Open
Abstract
Polychlorinated biphenyls (PCBs) are environmental pollutants and endocrine disruptors, harmfully affecting reproductive, endocrine, neurological and immunological systems. This broad influence has implications for processes such as wound healing, which is modulated by the immunological response of the body. Conversely, while PCBs can be linked to diminished wound healing, outside of PCB pollution systems, exercise has been shown to accelerate wound healing. However, the potential for moderate intensity exercise to modulate or offset the harmful effects of a toxin like PCB are yet unknown. A key aim of the present study was to examine how PCB exposure at different doses (0, 100, 500, 1000 ppm i.p.) altered wound healing in exercised versus non-exercised subgroups of mice. We examined PCB effects on immune function in more depth by analyzing the concentrations of cytokines, interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α), Interleukin-6 (IL-6) and granulocyte macrophage colony stimulating factor (GM-CSF) in these wounds inflicted by punch biopsy. Mice were euthanized at Day 3 or Day 5 after PCB injection (n = 3-6) and skin excised from the wound area was homogenized and analyzed for cytokine content. Results revealed that wound healing was not signficantly impacted by either PCB exposure or exercise, but there were patterns of delays in healing that depended on PCB dose. Changes in cytokines were also observed and depended on PCB dose and exercise experience. For example, IL-1β concentrations in Day 5 mice without PCB administration were 33% less in exercised mice than mice not exercised. However, IL-1β concentrations in Day 3 mice administered 100 ppm were 130% greater in exercised mice than not exercisedmice. Changes in the other measured cytokines varied with mainly depressions at lesser PCB doses and elevations at higher doses. Exercise had diverse effects on cytokine levels, but increased cytokine levels in the two greater doses. Explanations for these diverse effects include the use of young animals with more rapid wound healing rates less affected by toxin exposure, as well as PCB-mediated compensatory effects at specific doses which could actually enhance immune function. Future work should examine these interactions in more detail across a developmental time span. Understanding how manipulating the effects of exposure to environemntal contaminants using behavioral modification could be very useful in certain high risk populations or exposed individuals.
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Affiliation(s)
- Mahesh R. Pillai
- Dept. of Biological Sciences, Bowling Green State University, Bowling Green, Ohio, United States of America
| | - K. Todd Keylock
- Dept. of Exercise Science, Bowling Green State University, Bowling Green, Ohio, United States of America
| | - Howard C. Cromwell
- Dept. of Psychology and J.P. Scott Center for Neuroscience, Mind and Behavior, Bowling Green State University, Bowling Green, Ohio, United States of America
| | - Lee A. Meserve
- Dept. of Biological Sciences, Bowling Green State University, Bowling Green, Ohio, United States of America
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Foster C, Steventon JJ, Helme D, Tomassini V, Wise RG. Assessment of the Effects of Aerobic Fitness on Cerebrovascular Function in Young Adults Using Multiple Inversion Time Arterial Spin Labeling MRI. Front Physiol 2020; 11:360. [PMID: 32372976 PMCID: PMC7187806 DOI: 10.3389/fphys.2020.00360] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 03/27/2020] [Indexed: 11/13/2022] Open
Abstract
This cross-sectional study investigated the effects of aerobic fitness on cerebrovascular function in the healthy brain. Gray matter cerebral blood flow (CBF) and cerebrovascular reactivity (CVR) were quantified in a sample of young adults within a normal fitness range. Based on existing Transcranial Doppler ultrasound and fMRI evidence, we predicted a positive relationship between fitness and resting gray matter CBF and CVR. Exploratory hypotheses that higher V . O2peak would be associated with higher GM volume and cognitive performance were also investigated. 20 adults underwent a V . O2peak test and a battery of cognitive tests. All subjects also underwent an MRI scan where multiple inversion time (MTI) pulsed arterial spin labeling (PASL) was used to quantify resting CBF and CVR to 5% CO2. Region of interest analysis showed a non-significant inverse correlation between whole-brain gray matter CBF and V . O2peak; r = -0.4, p = 0.08, corrected p (p') = 0.16 and a significant positive correlation between V . O2peak and whole-brain averaged gray matter CVR; r = 0.62, p = 0.003, p' = 0.006. Voxel-wise analysis revealed a significant inverse association between V . O2peak and resting CBF in the left and right thalamus, brainstem, right lateral occipital cortex, left intra-calcarine cortex and cerebellum. The results of this study suggest that aerobic fitness is associated with lower baseline CBF and greater CVR in young adults.
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Affiliation(s)
- Catherine Foster
- Cardiff University Brain Research Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Cardiff, United Kingdom
| | - Jessica J. Steventon
- Cardiff University Brain Research Imaging Centre (CUBRIC), School of Physics and Astronomy, Cardiff University, Cardiff, United Kingdom
- Neuroscience and Mental Health Research Institute (NMHRI), School of Medicine, Cardiff University, Cardiff, United Kingdom
| | - Daniel Helme
- Department of Anaesthetics and Intensive Care Medicine, Cardiff University School of Medicine, Cardiff, United Kingdom
| | - Valentina Tomassini
- Cardiff University Brain Research Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Cardiff, United Kingdom
- Division of Psychological Medicine and Clinical Neurosciences, School of Medicine, Cardiff University, Cardiff, United Kingdom
- Department of Neuroscience, Imaging and Clinical Sciences, “G. D’Annunzio University” of Chieti-Pescara, Chieti, Italy
- Institute for Advanced Biomedical Technologies (ITAB), “G. D’Annunzio University” of Chieti-Pescara, Chieti, Italy
| | - Richard G. Wise
- Cardiff University Brain Research Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Cardiff, United Kingdom
- Department of Neuroscience, Imaging and Clinical Sciences, “G. D’Annunzio University” of Chieti-Pescara, Chieti, Italy
- Institute for Advanced Biomedical Technologies (ITAB), “G. D’Annunzio University” of Chieti-Pescara, Chieti, Italy
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Ceccarelli M, D’Andrea G, Micheli L, Tirone F. Interaction Between Neurogenic Stimuli and the Gene Network Controlling the Activation of Stem Cells of the Adult Neurogenic Niches, in Physiological and Pathological Conditions. Front Cell Dev Biol 2020; 8:211. [PMID: 32318568 PMCID: PMC7154047 DOI: 10.3389/fcell.2020.00211] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 03/11/2020] [Indexed: 12/26/2022] Open
Abstract
In the adult mammalian brain new neurons are continuously generated throughout life in two niches, the dentate gyrus of the hippocampus and the subventricular zone. This process, called adult neurogenesis, starts from stem cells, which are activated and enter the cell cycle. The proliferative capability of stem cells progressively decreases during aging. The population of stem cells is generally quiescent, and it is not clear whether the potential for stem cells to expand is limited, or whether they can expand and then return to quiescence, remaining available for further activation. Certain conditions may deregulate stem cells quiescence and self-renewal. In fact we discuss the possibility of activation of stem cells by neurogenic stimuli as a function of the intensity of the stimulus (i.e., whether this is physiological or pathological), and of the deregulation of the system (i.e., whether the model is aged or carrying genetic mutations in the gene network controlling quiescence). It appears that when the system is aged and/or carrying mutations of quiescence-maintaining genes, preservation of the quiescent state of stem cells is more critical and stem cells can be activated by a neurogenic stimulus which is ineffective in normal conditions. Moreover, when a neurogenic stimulus is in itself a cause of brain damage (e.g., kainic acid treatment) the activation of stem cells occurs bypassing any inhibitory control. Plausibly, with strong neurogenic stimuli, such as kainic acid injected into the dentate gyrus, the self-renewal capacity of stem cells may undergo rapid exhaustion. However, the self-renewal capability of stem cells persists when normal stimuli are elicited in the presence of a mutation of one of the quiescence-maintaining genes, such as p16Ink4a, p21Cip1 or Btg1. In this case, stem cells become promptly activated by a neurogenic stimulus even during aging. This indicates that stem cells retain a high proliferative capability and plasticity, and suggests that stem cells are protected against the response to stimulus and are resilient to exhaustion. It will be interesting to assess at which functional degree of deregulation of the quiescence-maintaining system, stem cells will remain responsive to repeated neurogenic stimuli without undergoing exhaustion of their pool.
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Affiliation(s)
| | | | | | - Felice Tirone
- Institute of Biochemistry and Cell Biology, National Research Council (IBBC-CNR), Rome, Italy
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D’Andrea G, Ceccarelli M, Bernini R, Clemente M, Santi L, Caruso C, Micheli L, Tirone F. Hydroxytyrosol stimulates neurogenesis in aged dentate gyrus by enhancing stem and progenitor cell proliferation and neuron survival. FASEB J 2020; 34:4512-4526. [DOI: 10.1096/fj.201902643r] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Revised: 12/31/2019] [Accepted: 01/16/2020] [Indexed: 12/18/2022]
Affiliation(s)
- Giorgio D’Andrea
- Institute of Biochemistry and Cell Biology National Research Council (IBBC‐CNR) Monterotondo, Rome Italy
- Department of Ecological and Biological Sciences University of Tuscia Viterbo Italy
| | - Manuela Ceccarelli
- Institute of Biochemistry and Cell Biology National Research Council (IBBC‐CNR) Monterotondo, Rome Italy
| | - Roberta Bernini
- Department of Agriculture and Forest Sciences (DAFNE) University of Tuscia Viterbo Italy
| | - Mariangela Clemente
- Department of Agriculture and Forest Sciences (DAFNE) University of Tuscia Viterbo Italy
| | - Luca Santi
- Department of Agriculture and Forest Sciences (DAFNE) University of Tuscia Viterbo Italy
| | - Carla Caruso
- Department of Ecological and Biological Sciences University of Tuscia Viterbo Italy
| | - Laura Micheli
- Institute of Biochemistry and Cell Biology National Research Council (IBBC‐CNR) Monterotondo, Rome Italy
| | - Felice Tirone
- Institute of Biochemistry and Cell Biology National Research Council (IBBC‐CNR) Monterotondo, Rome Italy
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Restored presynaptic synaptophysin and cholinergic inputs contribute to the protective effects of physical running on spatial memory in aged mice. Neurobiol Dis 2019; 132:104586. [DOI: 10.1016/j.nbd.2019.104586] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Revised: 08/06/2019] [Accepted: 08/23/2019] [Indexed: 01/16/2023] Open
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Gronek P, Balko S, Gronek J, Zajac A, Maszczyk A, Celka R, Doberska A, Czarny W, Podstawski R, Clark CCT, Yu F. Physical Activity and Alzheimer's Disease: A Narrative Review. Aging Dis 2019; 10:1282-1292. [PMID: 31788339 PMCID: PMC6844593 DOI: 10.14336/ad.2019.0226] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 02/26/2019] [Indexed: 12/12/2022] Open
Abstract
Although age is a dominant risk factor for Alzheimer’s disease (AD), epidemiological studies have shown that physical activity may significantly decrease age-related risks for AD, and indeed mitigate the impact in existing diagnosis. The aim of this study was to perform a narrative review on the preventative, and mitigating, effects of physical activity on AD onset, including genetic factors, mechanism of action and physical activity typology. In this article, we conducted a narrative review of the influence physical activity and exercise have on AD, utilising key terms related to AD, physical activity, mechanism and prevention, searching the online databases; Web of Science, PubMed and Google Scholar, and, subsequently, discuss possible mechanisms of this action. On the basis of this review, it is evident that physical activity and exercise may be incorporated in AD, notwithstanding, a greater number of high-quality randomised controlled trials are needed, moreover, physical activity typology must be acutely considered, primarily due to a dearth of research on the efficacy of physical activity types other than aerobic.
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Affiliation(s)
- Piotr Gronek
- 1Faculty of Physical Education, Sport and Rehabilitation, Poznan University of Physical Education, Poland
| | - Stefan Balko
- 2Department of Physical Education and Sport, Faculty of Education, Jan Evangelista Purkyne University in Usti nad Labem, Czech Republic
| | - Joanna Gronek
- 1Faculty of Physical Education, Sport and Rehabilitation, Poznan University of Physical Education, Poland
| | - Adam Zajac
- 3Department of Physical Education, University of Physical Education and Sport, Gdansk, Poland
| | - Adam Maszczyk
- 4Department of Methodology and Statistics, The Jerzy Kukuczka Academy of Physical Education in Katowice, Katowice, Poland
| | - Roman Celka
- 1Faculty of Physical Education, Sport and Rehabilitation, Poznan University of Physical Education, Poland
| | - Agnieszka Doberska
- 1Faculty of Physical Education, Sport and Rehabilitation, Poznan University of Physical Education, Poland
| | - Wojciech Czarny
- 5Faculty of Physical Education, Department of Human Sciences, University of Rzeszow, ul. Towarnickiego 3, 35-959 Rzeszów, Poland
| | - Robert Podstawski
- 6Faculty of Environmental Sciences, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - Cain C T Clark
- 7Faculty of Health and Life Sciences, Coventry University, Coventry, CV1 5FB, United Kingdom
| | - Fang Yu
- 8School of Nursing, University of Minnesota, Minneapolis, MN 55455, USA
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Fattoretti P, Malatesta M, Mariotti R, Zancanaro C. Testosterone administration increases synaptic density in the gyrus dentatus of old mice independently of physical exercise. Exp Gerontol 2019; 125:110664. [DOI: 10.1016/j.exger.2019.110664] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 05/17/2019] [Accepted: 07/15/2019] [Indexed: 10/26/2022]
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Circulating factors in young blood as potential therapeutic agents for age-related neurodegenerative and neurovascular diseases. Brain Res Bull 2019; 153:15-23. [PMID: 31400495 DOI: 10.1016/j.brainresbull.2019.08.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 07/30/2019] [Accepted: 08/05/2019] [Indexed: 02/07/2023]
Abstract
Recent animal studies on heterochronic parabiosis (a technique combining the blood circulation of two animals) have revealed that young blood has a powerful rejuvenating effect on brain aging. Circulating factors, especially growth differentiation factor 11 (GDF11) and C-C motif chemokine 11 (CCL11), may play a key role in this effect, which inspires hope for novel approaches to treating age-related cerebral diseases in humans, such as neurodegenerative and neurovascular diseases. Recently, attempts have begun to translate these astonishing and exciting findings from mice to humans and from bench to bedside. However, increasing reports have shown contradictory data, questioning the capacity of these circulating factors to reverse age-related brain dysfunction. In this review, we summarize the current research on the role of young blood, as well as the circulating factors GDF11 and CCL11, in the aging brain and age-related cerebral diseases. We highlight recent controversies, discuss related challenges and provide a future outlook.
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26
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Zhang L, So KF. Exercise, spinogenesis and cognitive functions. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2019; 147:323-360. [PMID: 31607360 DOI: 10.1016/bs.irn.2019.07.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Exercise training improves mental and cognitive functions by enhancing neurogenesis and neuroprotection. Recent studies suggest the facilitation of spinogenesis across different brain regions including hippocampus and cerebral cortex by physical activity. In this article we will summarize major findings for exercise effects on synaptogenesis and spinogenesis, in order to provide mechanisms for exercise intervention of both psychiatric diseases and neurodegenerative disorders. We will also revisit major findings for molecular mechanism governing exercise-related spinogenesis, and will discuss the screening for novel factors, or exerkines, whose levels are correlated with endurance training and affect neural plasticity. We believe that further studies focusing on the molecular mechanism of exercise-mediate spinogenesis should benefit the optimization of exercise therapy in clinics and the evaluation of treatment efficiency using specific biomarkers.
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Affiliation(s)
- Li Zhang
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou, PR China; Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, PR China; Center for Brain Science and Brain-Inspired Intelligence, Guangzhou, PR China
| | - Kwok-Fai So
- Guangdong-Hong Kong-Macau Institute of CNS Regeneration, Jinan University, Guangzhou, PR China; Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, PR China; Center for Brain Science and Brain-Inspired Intelligence, Guangzhou, PR China; State Key Laboratory of Brain and Cognitive Science, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, PR China.
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27
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Falck RS, Best JR, Davis JC, Liu-Ambrose T. The Independent Associations of Physical Activity and Sleep with Cognitive Function in Older Adults. J Alzheimers Dis 2019; 63:1469-1484. [PMID: 29782311 DOI: 10.3233/jad-170936] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND Current evidence suggests physical activity (PA) and sleep are important for cognitive health; however, few studies examining the role of PA and sleep for cognitive health have measured these behaviors objectively. OBJECTIVE We cross-sectionally examined whether 1) higher PA is associated with better cognitive performance independently of sleep quality; 2) higher sleep quality is associated with better cognitive performance independently of PA; and 3) whether higher PA is associated with better sleep quality. METHODS We measured PA, subjective sleep quality using the Pittsburgh Sleep Quality Index (PSQI), and objective sleep quality (i.e., fragmentation, efficiency, duration, and latency) using the MotionWatch8© in community-dwelling adults (N = 137; aged 55+). Cognitive function was indexed using the Alzheimer's Disease Assessment Scale-Plus. Correlation analyses were performed to determine relationships between PA, sleep quality, and cognitive function. We then used latent variable modelling to examine the relationships of PA with cognitive function independently of sleep quality, sleep quality with cognitive function independently of PA, and PA with sleep quality. RESULTS We found greater PA was associated with better cognitive performance independently of 1) PSQI (β= -0.03; p < 0.01); 2) sleep fragmentation (β= -0.02; p < 0.01); 3) sleep duration (β= -0.02; p < 0.01); and 4) sleep latency (β= -0.02; p < 0.01). In addition, better sleep efficiency was associated with better cognitive performance independently of PA (β= -0.01; p = 0.04). We did not find any associations between PA and sleep quality. CONCLUSIONS PA is associated with better cognitive performance independently of sleep quality, and sleep efficiency is associated with better cognitive performance independently of PA. However, PA is not associated with sleep quality and thus PA and sleep quality may be related to cognitive performance through independent mechanisms.
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Affiliation(s)
- Ryan S Falck
- University of British Columbia, Faculty of Medicine, Aging, Mobility and Cognitive Neuroscience Laboratory, Djavad Mowafaghian Centre for Brain Health, Vancouver, BC, Canada
| | - John R Best
- University of British Columbia, Faculty of Medicine, Aging, Mobility and Cognitive Neuroscience Laboratory, Djavad Mowafaghian Centre for Brain Health, Vancouver, BC, Canada
| | - Jennifer C Davis
- University of British Columbia, Faculty of Medicine, Aging, Mobility and Cognitive Neuroscience Laboratory, Djavad Mowafaghian Centre for Brain Health, Vancouver, BC, Canada
| | - Teresa Liu-Ambrose
- University of British Columbia, Faculty of Medicine, Aging, Mobility and Cognitive Neuroscience Laboratory, Djavad Mowafaghian Centre for Brain Health, Vancouver, BC, Canada.,Centre for Hip Health and Mobility, Vancouver Coastal Health Research Institute and University of British Columbia, Vancouver, BC, Canada
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Micheli L, D'Andrea G, Ceccarelli M, Ferri A, Scardigli R, Tirone F. p16Ink4a Prevents the Activation of Aged Quiescent Dentate Gyrus Stem Cells by Physical Exercise. Front Cell Neurosci 2019; 13:10. [PMID: 30792628 PMCID: PMC6374340 DOI: 10.3389/fncel.2019.00010] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 01/11/2019] [Indexed: 12/19/2022] Open
Abstract
In the neurogenic niches—the dentate gyrus of the hippocampus and the subventricular zone (SVZ) adjacent to lateral ventricles—stem cells continue to divide during adulthood, generating progenitor cells and new neurons, and to self-renew, thus maintaining the stem cell pool. During aging, the numbers of stem/progenitor cells in the neurogenic niches are reduced. The preservation of the neurogenic pool is committed to a number of antiproliferative genes, with the role of maintaining the quiescence of neural cells. The cyclin-dependent kinase inhibitor p16Ink4a, whose expression increases with age, controls the expansion of SVZ aging stem cells, since in mice its deficiency prevents the decline of neurogenesis in SVZ. No change of neurogenesis is however observed in the p16Ink4a-null dentate gyrus. Here, we hypothesized that p16Ink4a plays a role as a regulator of the self-renewal of the stem cell pool also in the dentate gyrus, and to test this possibility we stimulated the dentate gyrus neural cells of p16Ink4a-null aging mice with physical exercise, a powerful neurogenic activator. We observed that running highly induced the generation of new stem cells in the p16Ink4a-null dentate gyrus, forcing them to exit from quiescence. Stem cells, notably, are not induced to proliferate by running in wild-type (WT) mice. Moreover, p16Ink4a-null progenitor cells were increased by running significantly above the number observed in WT mice. The new stem and progenitor cells generated new neurons, and continued to actively proliferate in p16Ink4a-null mice longer than in the WT after cessation of exercise. Thus, p16Ink4a prevents aging dentate gyrus stem cells from being activated by exercise. Therefore, p16Ink4a may play a role in the maintenance of dentate gyrus stem cells after stimulus, by keeping a reserve of their self-renewal capacity during aging.
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Affiliation(s)
- Laura Micheli
- Institute of Cell Biology and Neurobiology, National Research Council, Foundation Santa Lucia, Rome, Italy
| | - Giorgio D'Andrea
- Institute of Cell Biology and Neurobiology, National Research Council, Foundation Santa Lucia, Rome, Italy.,Department of Ecological and Biological Sciences, University of Tuscia, Viterbo, Italy
| | - Manuela Ceccarelli
- Institute of Cell Biology and Neurobiology, National Research Council, Foundation Santa Lucia, Rome, Italy
| | - Alessandra Ferri
- Institute of Cell Biology and Neurobiology, National Research Council, Foundation Santa Lucia, Rome, Italy
| | - Raffaella Scardigli
- Institute of Translational Pharmacology (IFT), National Research Council, Rome, Italy
| | - Felice Tirone
- Institute of Cell Biology and Neurobiology, National Research Council, Foundation Santa Lucia, Rome, Italy
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Jahangiri Z, Gholamnezhad Z, Hosseini M. Neuroprotective effects of exercise in rodent models of memory deficit and Alzheimer's. Metab Brain Dis 2019; 34:21-37. [PMID: 30443769 DOI: 10.1007/s11011-018-0343-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 11/08/2018] [Indexed: 01/08/2023]
Abstract
Alzheimer's disease (AD) is a fastest growing neurodegenerative condition with no standard treatment. There are growing evidence about the beneficial effects of exercise in brain health promotion and slowing the cognitive decline. The aim of this study was to review the protective mechanisms of treadmill exercise in different models of rodent memory deficits. Online literature database, including PubMed-Medline, Scopus, Google scholar were searched from 2003 till 2017. Original article with English language were chosen according to following key words in the title: (exercise OR physical activity) AND (memory OR learning). Ninety studies were finally included in the qualitative synthesis. The results of these studies showed the protective effects of exercise on AD induced neurodegerative and neuroinflammatory process. Neuroperotective effects of exercise on the hippocampus seem to be increasing in immediate-early gene c-Fos expression in dentate gyrus; enhancing the Wnt3 expression and inhibiting glycogen synthase kinase-3β expression; increasing the 5-bro-mo-2'-deoxyridine-positive and doublecortin-positive cells (dentate gyrus); increasing the level of astrocytes glial fibrillary acidic protein and decrease in S100B protein, increasing in blood brain barrier integrity; prevention of oxidative stress injury, inducing morphological changes in astrocytes in the stratum radiatum of cornu ammonis 1(CA1) area; increase in cell proliferation and suppress apoptosis in dentate gyrus; increase in brain-derived neurotrophic factor and tropomyosin receptor kinase B expressions; enhancing the glycogen levels and normalizing the monocarboxylate transporter 2 expression.
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Affiliation(s)
- Zahra Jahangiri
- Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, 9177948564, Iran
- Department of Physiology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Zahra Gholamnezhad
- Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, 9177948564, Iran.
- Department of Physiology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Mahmoud Hosseini
- Division of Neurocognitive Sciences, Psychiatry and Behavioral Sciences Research Center, Mashhad University of Medical Sciences, Mashhad, 9177948564, Iran
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Depression and adult neurogenesis: Positive effects of the antidepressant fluoxetine and of physical exercise. Brain Res Bull 2018; 143:181-193. [PMID: 30236533 DOI: 10.1016/j.brainresbull.2018.09.002] [Citation(s) in RCA: 167] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 09/03/2018] [Accepted: 09/11/2018] [Indexed: 12/11/2022]
Abstract
Of wide interest for health is the relation existing between depression, a very common psychological illness, accompanied by anxiety and reduced ability to concentrate, and adult neurogenesis. We will focus on two neurogenic stimuli, fluoxetine and physical exercise, both endowed with the ability to activate adult neurogenesis in the dentate gyrus of the hippocampus, known to be required for learning and memory, and both able to counteract depression. Fluoxetine belongs to the class of selective serotonin reuptake inhibitor (SSRI) antidepressants, which represent the most used pharmacological therapy; physical exercise has also been shown to effectively counteract depression symptoms in rodents as well as in humans. While there is evidence that the antidepressant effect of fluoxetine requires its pro-neurogenic action, exerted by promoting proliferation, differentiation and survival of progenitor cells of the hippocampus, on the other hand fluoxetine exerts also neurogenesis-independent antidepressant effects by influencing the plasticity of the new neurons generated. Similarly, the antidepressant action of running also correlates with an increase of hippocampal neurogenesis and plasticity, although the gene pathways involved are only partially coincident with those of fluoxetine, such as those involved in serotonin metabolism and synapse formation. We further discuss how extra-neurogenic actions are also suggested by the fact that, unlike running, fluoxetine is unable to stimulate neurogenesis during aging, but still displays antidepressant effects. Moreover, in specific conditions, fluoxetine or running activate not only progenitor but also stem cells, which normally are not stimulated; this fact reveals how stem cells have a long-term, hidden ability to self-renew and, more generally, that neurogenesis is subject to complex controls that may play a role in depression, such as the type of neurogenic stimulus or the state of the local niche. Finally, we discuss how fluoxetine or running are effective in counteracting depression originated from stress or neurodegenerative diseases.
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Pietrelli A, Matković L, Vacotto M, Lopez-Costa JJ, Basso N, Brusco A. Aerobic exercise upregulates the BDNF-Serotonin systems and improves the cognitive function in rats. Neurobiol Learn Mem 2018; 155:528-542. [PMID: 29800645 DOI: 10.1016/j.nlm.2018.05.007] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Revised: 04/20/2018] [Accepted: 05/16/2018] [Indexed: 01/10/2023]
Abstract
Aerobic exercise (AE) benefits brain health and behavior. Serotonin (5-HT) and brain-derived neurotrophic factor (BDNF) are known to mediate and shape cognitive processes. Both systems share some actions: BDNF is involved in the maturation and function of 5-HT neurons. In turn, 5-HT is involved in neuroplasticity phenomena mediated by BDNF and stimulated by exercise. The aim of this work was to study the long-term effects of AE on BDNF- 5-HT systems and cognitive function in rats at different ages. A lifelong moderate-intensity aerobic training program was designed, in which aerobically exercised (E) and sedentary control (C) rats were studied at middle (8 months) and old age (18 months) by means of biochemical, immunohistochemical and behavioral assays. The levels and expression of BDNF, 5-HT, serotonin transporter (SERT) and 5-HT1A receptor were determined in selected brain areas involved in memory and learning. Immunopositive cells to neuronal nuclear protein (NeuN) in the hippocampus CA1 area were also quantified. The cognitive function was evaluated by the object recognition test (ORT). Results indicate that AE enhanced spatial and non-spatial memory systems, modulated by age. This outcome temporarily correlated with a significant upregulation of cortical, hippocampal and striatal BDNF levels in parallel with an increase in the number of hippocampal CA1-mature neurons. AE also increased brain and raphe 5-HT levels, as well as the expression of SERT and 5-HT1A receptor in the cortex and hippocampus. Old AE rats showed a highly conserved response, indicating a remarkable protective effect of exercise on both systems. In summary, lifelong AE positively affects BDNF-5-HT systems, improves cognitive function and protects the brain against the deleterious effects of sedentary life and aging.
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Affiliation(s)
- A Pietrelli
- Universidad de Ciencias Empresariales y Sociales (UCES), Departamento de Investigación en Ciencia Básica, Buenos Aires, Argentina; CONICET-Universidad de Buenos Aires, Instituto de Biología Celular y Neurociencia (IBCN), Buenos Aires, Argentina.
| | - L Matković
- Universidad de Ciencias Empresariales y Sociales (UCES), Departamento de Investigación en Ciencia Básica, Buenos Aires, Argentina; Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Biológica, Buenos Aires, Argentina
| | - M Vacotto
- CONICET-Universidad de Buenos Aires, Instituto de Biología Celular y Neurociencia (IBCN), Buenos Aires, Argentina
| | - J J Lopez-Costa
- CONICET-Universidad de Buenos Aires, Instituto de Biología Celular y Neurociencia (IBCN), Buenos Aires, Argentina; Universidad de Buenos Aires, Facultad de Medicina, Departamento de Biología Celular, Histología, Embriología y Genética, Buenos Aires, Argentina
| | - N Basso
- CONICET-Universidad de Buenos Aires, Instituto de Fisiopatología Cardiovascular (INFICA), Buenos Aires, Argentina
| | - A Brusco
- CONICET-Universidad de Buenos Aires, Instituto de Biología Celular y Neurociencia (IBCN), Buenos Aires, Argentina; Universidad de Buenos Aires, Facultad de Medicina, Departamento de Biología Celular, Histología, Embriología y Genética, Buenos Aires, Argentina
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Fattoretti P, Malatesta M, Cisterna B, Milanese C, Zancanaro C. Modulatory Effect of Aerobic Physical Activity on Synaptic Ultrastructure in the Old Mouse Hippocampus. Front Aging Neurosci 2018; 10:141. [PMID: 29867450 PMCID: PMC5964889 DOI: 10.3389/fnagi.2018.00141] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Accepted: 04/27/2018] [Indexed: 11/13/2022] Open
Abstract
Aerobic physical exercise (APE) leads to improved brain functions. To better understand the beneficial effect of APE on the aging brain, a morphometric study was carried out of changes in hippocampal synapses of old (>27 months) Balb/c mice undergoing treadmill training (OTT) for 4 weeks in comparison with old sedentary (OS), middle-aged sedentary (MAS) and middle-aged treadmill training (MATT) mice. The inner molecular layer of the hippocampal dentate gyrus (IMLDG) and the molecular stratum of Ammon’s horn1 neurons (SMCA1) were investigated. The number of synapses per cubic micron of tissue (numeric density, Nv), overall synaptic area per cubic micron of tissue (surface density, Sv), average area of synaptic contact zones (S), and frequency (%) of perforated synapses (PS) were measured in electron micrographs of ethanol-phosphotungstic acid (E-PTA) stained tissue. Data were analyzed with analysis of variance (ANOVA). In IMLDG, an effect of age was found for Nv and Sv, but not S and %PS. Similar results were found for exercise and the interaction of age and exercise. In post hoc analysis Nv was higher (60.6% to 75.1%; p < 0.001) in MATT vs. MAS, OS and OTT. Sv was higher (32.3% to 54.6%; p < 0.001) in MATT vs. MAS, OS and OTT. In SMCA1, age affected Nv, Sv and %PS, but not S. The effect of exercise was significant for Sv only. The interaction of age and exercise was significant for Nv, Sv and %PS. In post hoc analysis Nv was lower in OS vs. MAS, MATT and OTT (−26.1% to −32.1%; p < 0.038). MAS and OTT were similar. Sv was lower in OS vs. MAS, MATT and OTT (−23.4 to −30.3%, p < 0.004). MAS and OTT were similar. PS frequency was higher in OS vs. MAS, MATT and OTT (48.3% to +96.6%, p < 0.023). APE positively modulated synaptic structural dynamics in the aging hippocampus, possibly in a region-specific way. The APE-associated reduction in PS frequency in SMCA1 of old mice suggests that an increasing complement of PS is a compensatory phenomenon to maintain synaptic efficacy. In conclusion, the modulation of synaptic plasticity by APE gives quantitative support to the concept that APE protects from neurodegeneration and improves learning and memory in aging.
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Affiliation(s)
- Patrizia Fattoretti
- Cellular Bioenergetics Laboratory, Center for Neurobiology of Aging, Istituto Nazionale di Riposo e Cura per Anziani (INRCA), Ancona, Italy
| | - Manuela Malatesta
- Anatomy and Histology Section, Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
| | - Barbara Cisterna
- Anatomy and Histology Section, Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
| | - Chiara Milanese
- Anatomy and Histology Section, Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
| | - Carlo Zancanaro
- Anatomy and Histology Section, Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
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Birch AM, Kelly ÁM. Lifelong environmental enrichment in the absence of exercise protects the brain from age-related cognitive decline. Neuropharmacology 2018; 145:59-74. [PMID: 29630903 DOI: 10.1016/j.neuropharm.2018.03.042] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 03/30/2018] [Accepted: 03/31/2018] [Indexed: 12/19/2022]
Abstract
Environmental manipulations enhance neuroplasticity, with enrichment-induced cognitive improvements linked to increased expression of growth factors and enhanced hippocampal neurogenesis. Environmental enrichment (EE) is defined as the addition of social, physical and somatosensory stimulation into an animal's environment via larger group housing, extra objects and, often, running wheels. Previous studies from our laboratory report that physical activity is a potent memory enhancer but that long-term environmental stimulation can be as effective as exercise at ameliorating age-related memory decline. To assess the effects of EE, in the absence of exercise, rats were housed in continuous enriched conditions for 20 months and memory assessed at young, middle aged and aged timepoints. MRI scans were also performed at these timepoints to assess regional changes in grey matter and blood flow with age, and effects of EE upon these measures. Results show an age-related decline in recognition, spatial and working memory that was prevented by EE. A parallel reduction in βNGF in hippocampus, and cell proliferation in the dentate gyrus, was prevented by EE. Furthermore, EE attenuated an age-related increase in apoptosis and expression of pro-inflammatory markers IL-1β and CD68. Long-term EE induced region-specific changes in grey matter intensity and partially rescued age-related reductions in cerebral blood flow. This study demonstrates that sensory enrichment alone can ameliorate many features typical of the ageing brain, such as increases in apoptosis and pro-inflammatory markers. Furthermore, we provide novel data on enrichment-induced regional grey matter alterations and age-related changes in blood flow in the rat. This article is part of the Special Issue entitled "Neurobiology of Environmental Enrichment".
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Affiliation(s)
- Amy M Birch
- Department of Physiology, School of Medicine & Trinity College Institute of Neuroscience & Trinity Biomedical Sciences Institute, University of Dublin, Trinity College, Dublin 2, Ireland
| | - Áine M Kelly
- Department of Physiology, School of Medicine & Trinity College Institute of Neuroscience & Trinity Biomedical Sciences Institute, University of Dublin, Trinity College, Dublin 2, Ireland.
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Bullock AM, Mizzi AL, Kovacevic A, Heisz JJ. The Association of Aging and Aerobic Fitness With Memory. Front Aging Neurosci 2018; 10:63. [PMID: 29593524 PMCID: PMC5854680 DOI: 10.3389/fnagi.2018.00063] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 02/22/2018] [Indexed: 01/02/2023] Open
Abstract
The present study examined the differential effects of aging and fitness on memory. Ninety-five young adults (YA) and 81 older adults (OA) performed the Mnemonic Similarity Task (MST) to assess high-interference memory and general recognition memory. Age-related differences in high-interference memory were observed across the lifespan, with performance progressively worsening from young to old. In contrast, age-related differences in general recognition memory were not observed until after 60 years of age. Furthermore, OA with higher aerobic fitness had better high-interference memory, suggesting that exercise may be an important lifestyle factor influencing this aspect of memory. Overall, these findings suggest different trajectories of decline for high-interference and general recognition memory, with a selective role for physical activity in promoting high-interference memory.
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Affiliation(s)
- Alexis M Bullock
- Department of Kinesiology, McMaster University, Hamilton, ON, Canada
| | - Allison L Mizzi
- Department of Kinesiology, McMaster University, Hamilton, ON, Canada
| | - Ana Kovacevic
- Department of Kinesiology, McMaster University, Hamilton, ON, Canada
| | - Jennifer J Heisz
- Department of Kinesiology, McMaster University, Hamilton, ON, Canada
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Saraulli D, Costanzi M, Mastrorilli V, Farioli-Vecchioli S. The Long Run: Neuroprotective Effects of Physical Exercise on Adult Neurogenesis from Youth to Old Age. Curr Neuropharmacol 2018; 15:519-533. [PMID: 27000776 PMCID: PMC5543673 DOI: 10.2174/1570159x14666160412150223] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 03/08/2016] [Accepted: 03/16/2016] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND The rapid lengthening of life expectancy has raised the problem of providing social programs to counteract the age-related cognitive decline in a growing number of older people. Physical activity stands among the most promising interventions aimed at brain wellbeing, because of its effective neuroprotective action and low social cost. The purpose of this review is to describe the neuroprotective role exerted by physical activity in different life stages. In particular, we focus on adult neurogenesis, a process which has proved being highly responsive to physical exercise and may represent a major factor of brain health over the lifespan. METHODS The most recent literature related to the subject has been reviewed. The text has been divided into three main sections, addressing the effects of physical exercise during childhood/ adolescence, adulthood and aging, respectively. For each one, the most relevant studies, carried out on both human participants and rodent models, have been described. RESULTS The data reviewed converge in indicating that physical activity exerts a positive effect on brain functioning throughout the lifespan. However, uncertainty remains about the magnitude of the effect and its biological underpinnings. Cellular and synaptic plasticity provided by adult neurogenesis are highly probable mediators, but the mechanism for their action has yet to be conclusively established. CONCLUSION Despite alternative mechanisms of action are currently debated, age-appropriate physical activity programs may constitute a large-scale, relatively inexpensive and powerful approach to dampen the individual and social impact of age-related cognitive decline.
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Affiliation(s)
- Daniele Saraulli
- Institute of Cell Biology and Neurobiology, National Research Council, & Fondazione S. Lucia, Rome. Italy
| | - Marco Costanzi
- Department of Human Sciences, LUMSA University, Rome. Italy
| | - Valentina Mastrorilli
- Institute of Cell Biology and Neurobiology, National Research Council, & Fondazione S. Lucia, Rome. Italy
| | - Stefano Farioli-Vecchioli
- Institute of Cell Biology and Neurobiology, National Research Council, Via del Fosso di Fiorano 64, 00143 Rome. Italy
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36
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Heisz JJ, Clark IB, Bonin K, Paolucci EM, Michalski B, Becker S, Fahnestock M. The Effects of Physical Exercise and Cognitive Training on Memory and Neurotrophic Factors. J Cogn Neurosci 2017; 29:1895-1907. [PMID: 28699808 DOI: 10.1162/jocn_a_01164] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
This study examined the combined effect of physical exercise and cognitive training on memory and neurotrophic factors in healthy, young adults. Ninety-five participants completed 6 weeks of exercise training, combined exercise and cognitive training, or no training (control). Both the exercise and combined training groups improved performance on a high-interference memory task, whereas the control group did not. In contrast, neither training group improved on general recognition performance, suggesting that exercise training selectively increases high-interference memory that may be linked to hippocampal function. Individuals who experienced greater fitness improvements from the exercise training (i.e., high responders to exercise) also had greater increases in the serum neurotrophic factors brain-derived neurotrophic factor and insulin-like growth factor-1. These high responders to exercise also had better high-interference memory performance as a result of the combined exercise and cognitive training compared with exercise alone, suggesting that potential synergistic effects might depend on the availability of neurotrophic factors. These findings are especially important, as memory benefits accrued from a relatively short intervention in high-functioning young adults.
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37
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Sex differences in aerobic exercise efficacy to improve cognition: A systematic review and meta-analysis of studies in older rodents. Front Neuroendocrinol 2017; 46:86-105. [PMID: 28614695 DOI: 10.1016/j.yfrne.2017.06.001] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 05/30/2017] [Accepted: 06/09/2017] [Indexed: 12/16/2022]
Abstract
Research in humans indicates that women may show greater cognitive benefits from aerobic training (AT) than men. To determine whether this sex difference extends to rodents, we conducted a systematic review and meta-analysis of studies in healthy, older rodents. Results indicate that compared to controls, AT improved hippocampus-dependent and -independent learning and memory. A sex difference was found with males showing larger benefits from AT on conditioned-avoidance and non-spatial memory tasks. AT also increased brain-derived neurotrophic factor compared to controls, with larger effects in females. As an exploratory analysis, sex differences in voluntary AT were examined separately from forced AT. Voluntary AT enhanced non-spatial memory to a greater extent in males. Forced AT enhanced hippocampus-dependent learning and memory more so in females. These findings suggest that sex is an important factor to consider, and studies directly assessing sex differences in the ability of exercise to improve brain function are needed.
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Rakesh G, Szabo ST, Alexopoulos GS, Zannas AS. Strategies for dementia prevention: latest evidence and implications. Ther Adv Chronic Dis 2017; 8:121-136. [PMID: 28815009 DOI: 10.1177/2040622317712442] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 04/24/2017] [Indexed: 01/21/2023] Open
Abstract
Dementia is a common and debilitating syndrome with enormous impact on individuals and societies. Preventing disease onset or progression would translate to public health and societal benefits. In this review, we discuss the latest evidence on interventions that may show promise for the prevention of cognitive decline. We appraise existing evidence primarily drawn from randomized controlled trials, systematic reviews, and meta-analyses, but also highlight observational studies in humans and relevant work in model organisms. Overall, there is currently limited evidence to support a cause-effect relationship between any preventive strategy and the development or progression of dementia. However, studies to date suggest that a multifactorial intervention comprising regular exercise and healthy diet, along with the amelioration of vascular risk factors, psychosocial stress, and major depressive episodes may be most promising for the prevention of cognitive decline. We discuss the challenges, future directions, and implications of this line of research.
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Affiliation(s)
- Gopalkumar Rakesh
- Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC, USA
| | - Steven T Szabo
- Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC, USA
| | - George S Alexopoulos
- Department of Psychiatry, Weill Cornell Institute of Geriatric Psychiatry, Weill Cornell Medical College, White Plains, NY, USA
| | - Anthony S Zannas
- Department of Translational Research in Psychiatry, Max Planck Institute of Psychiatry, Kraepelinstrasse 2-10, 80804 Munich, Germany
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Cai H, Li G, Hua S, Liu Y, Chen L. Effect of exercise on cognitive function in chronic disease patients: a meta-analysis and systematic review of randomized controlled trials. Clin Interv Aging 2017; 12:773-783. [PMID: 28546744 PMCID: PMC5436795 DOI: 10.2147/cia.s135700] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Background The purpose of this study was to conduct a meta-analysis and systematic review to assess the effect of exercise on cognitive function in people with chronic diseases. Methods PubMed, Web of Science, Embase, the Cochrane Library, CINAHL, PsycINFO, and three Chinese databases were electronically searched for papers that were published until September 2016. This meta-analysis and systematic review included randomized controlled trials that evaluated the effect of exercise on cognitive function compared with control group for people with chronic diseases. Results Totally, 35 studies met the inclusion criteria, with 3,113 participants. The main analysis revealed a positive overall random effect of exercise intervention on cognitive function in patients with chronic diseases. The secondary analysis revealed that aerobic exercise interventions and aerobic included exercise interventions had a positive effect on cognition in patients with chronic diseases. The intervention offering low frequency had a positive effect on cognitive function in patients with chronic diseases. Finally, we found that interventions offered at both low exercise intensity and moderate exercise intensity had a positive effect on cognitive function in patients with chronic diseases. The secondary analysis also revealed that exercise interventions were beneficial in Alzheimer’s disease patients when grouped by disease type. Conclusion This meta-analysis and systematic review suggests that exercise interventions positively influence cognitive function in patients with chronic diseases. Beneficial effect was independent of the type of disease, type of exercise, frequency, and the intensity of the exercise intervention.
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Affiliation(s)
- Hong Cai
- School of Nursing, Jilin University, Changchun, Jilin, People's Republic of China
| | - Guichen Li
- School of Nursing, Jilin University, Changchun, Jilin, People's Republic of China
| | - Shanshan Hua
- School of Nursing, Jilin University, Changchun, Jilin, People's Republic of China
| | - Yufei Liu
- School of Nursing, Jilin University, Changchun, Jilin, People's Republic of China
| | - Li Chen
- School of Nursing, Jilin University, Changchun, Jilin, People's Republic of China
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40
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Alkadhi KA. Exercise as a Positive Modulator of Brain Function. Mol Neurobiol 2017; 55:3112-3130. [PMID: 28466271 DOI: 10.1007/s12035-017-0516-4] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Accepted: 04/04/2017] [Indexed: 12/24/2022]
Abstract
Various forms of exercise have been shown to prevent, restore, or ameliorate a variety of brain disorders including dementias, Parkinson's disease, chronic stress, thyroid disorders, and sleep deprivation, some of which are discussed here. In this review, the effects on brain function of various forms of exercise and exercise mimetics in humans and animal experiments are compared and discussed. Possible mechanisms of the beneficial effects of exercise including the role of neurotrophic factors and others are also discussed.
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Affiliation(s)
- Karim A Alkadhi
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, 77204, USA.
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41
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Becker S. Neurogenesis and pattern separation: time for a divorce. WILEY INTERDISCIPLINARY REVIEWS. COGNITIVE SCIENCE 2016; 8. [PMID: 28026915 DOI: 10.1002/wcs.1427] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 09/09/2016] [Accepted: 09/30/2016] [Indexed: 01/08/2023]
Abstract
The generation of new neurons in the adult mammalian brain has led to numerous theories as to their functional significance. One of the most widely held views is that adult neurogenesis promotes pattern separation, a process by which overlapping patterns of neural activation are mapped to less overlapping representations. While a large body of evidence supports a role for neurogenesis in high interference memory tasks, it does not support the proposed function of neurogenesis in mediating pattern separation. Instead, the adult-generated neurons seem to generate highly overlapping and yet distinct distributed representations for similar events. One way in which these immature, highly plastic, hyperactive neurons may contribute to novel memory formation while avoiding interference is by virtue of their extremely sparse connectivity with incoming perforant path fibers. Another intriguing proposal, awaiting empirical confirmation, is that the young neurons' recruitment into memory formation is gated by a novelty/mismatch mechanism mediated by CA3 or hilar back-projections. Ongoing research into the intriguing link between neurogenesis, stress-related mood disorders, and age-related neurodegeneration may lead to promising neurogenesis-based treatments for this wide range of clinical disorders. WIREs Cogn Sci 2017, 8:e1427. doi: 10.1002/wcs.1427 For further resources related to this article, please visit the WIREs website.
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Affiliation(s)
- Suzanna Becker
- Department of Psychology Neuroscience and Behaviour, McMaster University, Hamilton, Canada
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42
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Therapeutically relevant structural and functional mechanisms triggered by physical and cognitive exercise. Mol Psychiatry 2016; 21:1633-1642. [PMID: 27001615 PMCID: PMC5078857 DOI: 10.1038/mp.2016.19] [Citation(s) in RCA: 120] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Revised: 01/12/2016] [Accepted: 01/20/2016] [Indexed: 02/04/2023]
Abstract
Physical and cognitive exercise may prevent or delay dementia in later life but the neural mechanisms underlying these therapeutic benefits are largely unknown. We examined structural and functional magnetic resonance imaging (MRI) brain changes after 6 months of progressive resistance training (PRT), computerized cognitive training (CCT) or combined intervention. A total of 100 older individuals (68 females, average age=70.1, s.d.±6.7, 55-87 years) with dementia prodrome mild cognitive impairment were recruited in the SMART (Study of Mental Activity and Resistance Training) Trial. Participants were randomly assigned into four intervention groups: PRT+CCT, PRT+SHAM CCT, CCT+SHAM PRT and double SHAM. Multimodal MRI was conducted at baseline and at 6 months of follow-up (immediately after training) to measure structural and spontaneous functional changes in the brain, with a focus on the hippocampus and posterior cingulate regions. Participants' cognitive changes were also assessed before and after training. We found that PRT but not CCT significantly improved global cognition (F(90)=4.1, P<0.05) as well as expanded gray matter in the posterior cingulate (Pcorrected <0.05), and these changes were related to each other (r=0.25, P=0.03). PRT also reversed progression of white matter hyperintensities, a biomarker of cerebrovascular disease, in several brain areas. In contrast, CCT but not PRT attenuated decline in overall memory performance (F(90)=5.7, P<0.02), mediated by enhanced functional connectivity between the hippocampus and superior frontal cortex. Our findings indicate that physical and cognitive training depend on discrete neuronal mechanisms for their therapeutic efficacy, information that may help develop targeted lifestyle-based preventative strategies.
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Perry CJ, Lawrence AJ. Addiction, cognitive decline and therapy: seeking ways to escape a vicious cycle. GENES BRAIN AND BEHAVIOR 2016; 16:205-218. [DOI: 10.1111/gbb.12325] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Revised: 08/14/2016] [Accepted: 08/25/2016] [Indexed: 12/31/2022]
Affiliation(s)
- C. J. Perry
- Behavioural Neuroscience Division; The Florey Institute of Neuroscience and Mental Health; Melbourne VIC Australia
- Florey Department of Neuroscience and Mental Health; University of Melbourne; Melbourne VIC Australia
| | - A. J. Lawrence
- Behavioural Neuroscience Division; The Florey Institute of Neuroscience and Mental Health; Melbourne VIC Australia
- Florey Department of Neuroscience and Mental Health; University of Melbourne; Melbourne VIC Australia
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44
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Perry CJ. Cognitive Decline and Recovery in Alcohol Abuse. J Mol Neurosci 2016; 60:383-389. [DOI: 10.1007/s12031-016-0798-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 07/07/2016] [Indexed: 01/12/2023]
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45
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Ribeiro ML, Moreira LM, Arçari DP, Dos Santos LF, Marques AC, Pedrazzoli J, Cerutti SM. Protective effects of chronic treatment with a standardized extract of Ginkgo biloba L. in the prefrontal cortex and dorsal hippocampus of middle-aged rats. Behav Brain Res 2016; 313:144-150. [PMID: 27424157 DOI: 10.1016/j.bbr.2016.06.029] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 06/10/2016] [Accepted: 06/14/2016] [Indexed: 12/25/2022]
Abstract
This study assessed the effects of chronic treatment with a standardized extract of Ginkgo biloba L. (EGb) on short-term and long-term memory as well as on anxiety-like and locomotor activity using the plus-maze discriminative avoidance task (PM-DAT). Additionally, we evaluated the antioxidant and neuroprotective effects of EGb on the prefrontal cortex (PFC) and dorsal hippocampus (DH) of middle-aged rats using the comet assay. Twelve-month-old male Wistar rats were administered vehicle or EGb (0.5mgkg(-1) or 1.0gkg(-1)) for 30days. Behavioural data showed that EGb treatment improved short-term memory. Neither an anti-anxiety effect nor a change in locomotor activity was observed. Twenty-four hours after the behavioural tests, the rats were decapitated, and the PFC and DH were quickly dissected out and prepared for the comet assay. The levels of DNA damage in the PFC were significantly lower in rats that were treated with 1.0gkg(-1) EGb. Both doses of EGb decreased H2O2-induced DNA breakage in cortical cells, whereas the levels of DNA damage in the EGb-treated animals were significantly lower than those in the control animals. No significant differences in the level of DNA damage in hippocampal cells were observed among the experimental groups. EGb treatment was not able to reduce H2O2-induced DNA damage in hippocampal cells. Altogether, our data provide the first demonstration that chronic EGb treatment improved the short-term memory of middle-aged rats, an effect that could be associated with a reduction in free radical production in the PFC. These data suggest that EGb treatment might increase the survival of cortical neurons and corroborate and extend the view that EGb has protective and therapeutic properties.
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Affiliation(s)
- Marcelo L Ribeiro
- Laboratório de Biologia Molecular-Unidade Integrada de Farmacologia e Gastroenterologia, Universidade São Francisco, Bragança Paulista, São Paulo, Brazil; Cellular and Behavioral Pharmacology Laboratory, Department of Biological Science, Universidade Federal de Sao Paulo, Diadema, São Paulo, Brazil
| | - Luciana M Moreira
- Laboratório de Biologia Molecular-Unidade Integrada de Farmacologia e Gastroenterologia, Universidade São Francisco, Bragança Paulista, São Paulo, Brazil; Cellular and Behavioral Pharmacology Laboratory, Department of Biological Science, Universidade Federal de Sao Paulo, Diadema, São Paulo, Brazil
| | - Demetrius P Arçari
- Laboratório de Biologia Molecular-Unidade Integrada de Farmacologia e Gastroenterologia, Universidade São Francisco, Bragança Paulista, São Paulo, Brazil; Cellular and Behavioral Pharmacology Laboratory, Department of Biological Science, Universidade Federal de Sao Paulo, Diadema, São Paulo, Brazil
| | - Letícia França Dos Santos
- Cellular and Behavioral Pharmacology Laboratory, Department of Biological Science, Universidade Federal de Sao Paulo, Diadema, São Paulo, Brazil; Universidade São Francisco, Bragança Paulista, São Paulo, Brazil
| | - Antônio Cezar Marques
- Cellular and Behavioral Pharmacology Laboratory, Department of Biological Science, Universidade Federal de Sao Paulo, Diadema, São Paulo, Brazil; Universidade São Francisco, Bragança Paulista, São Paulo, Brazil
| | - José Pedrazzoli
- Laboratório de Biologia Molecular-Unidade Integrada de Farmacologia e Gastroenterologia, Universidade São Francisco, Bragança Paulista, São Paulo, Brazil; Cellular and Behavioral Pharmacology Laboratory, Department of Biological Science, Universidade Federal de Sao Paulo, Diadema, São Paulo, Brazil
| | - Suzete M Cerutti
- Cellular and Behavioral Pharmacology Laboratory, Department of Biological Science, Universidade Federal de Sao Paulo, Diadema, São Paulo, Brazil; Universidade São Francisco, Bragança Paulista, São Paulo, Brazil.
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Castilla-Ortega E, Blanco E, Serrano A, Ladrón de Guevara-Miranda D, Pedraz M, Estivill-Torrús G, Pavón FJ, Rodríguez de Fonseca F, Santín LJ. Pharmacological reduction of adult hippocampal neurogenesis modifies functional brain circuits in mice exposed to a cocaine conditioned place preference paradigm. Addict Biol 2016; 21:575-88. [PMID: 25870909 DOI: 10.1111/adb.12248] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We investigated the role of adult hippocampal neurogenesis in cocaine-induced conditioned place preference (CPP) behaviour and the functional brain circuitry involved. Adult hippocampal neurogenesis was pharmacologically reduced with temozolomide (TMZ), and mice were tested for cocaine-induced CPP to study c-Fos expression in the hippocampus and in extrahippocampal addiction-related areas. Correlational and multivariate analysis revealed that, under normal conditions, the hippocampus showed widespread functional connectivity with other brain areas and strongly contributed to the functional brain module associated with CPP expression. However, the neurogenesis-reduced mice showed normal CPP acquisition but engaged an alternate brain circuit where the functional connectivity of the dentate gyrus was notably reduced and other areas (the medial prefrontal cortex, accumbens and paraventricular hypothalamic nucleus) were recruited instead of the hippocampus. A second experiment unveiled that mice acquiring the cocaine-induced CPP under neurogenesis-reduced conditions were delayed in extinguishing their drug-seeking behaviour. But if the inhibited neurons were generated after CPP acquisition, extinction was not affected but an enhanced long-term CPP retention was found, suggesting that some roles of the adult-born neurons may differ depending on whether they are generated before or after drug-contextual associations are established. Importantly, cocaine-induced reinstatement of CPP behaviour was increased in the TMZ mice, regardless of the time of neurogenesis inhibition. The results show that adult hippocampal neurogenesis sculpts the addiction-related functional brain circuits, and reduction of the adult-born hippocampal neurons increases cocaine seeking in the CPP model.
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Affiliation(s)
- Estela Castilla-Ortega
- Unidad de Gestión Clínica de Salud Mental; Instituto de Investigación Biomédica de Málaga (IBIMA); Hospital Regional Universitario de Málaga; Spain
| | - Eduardo Blanco
- Departament de Pedagogia i Psicología; Facultat d'Educació, Psicologia i Treball Social; Universitat de Lleida; Spain
| | - Antonia Serrano
- Unidad de Gestión Clínica de Salud Mental; Instituto de Investigación Biomédica de Málaga (IBIMA); Hospital Regional Universitario de Málaga; Spain
| | - David Ladrón de Guevara-Miranda
- Departamento de Psicobiología y Metodología de las Ciencias del Comportamiento; Instituto de Investigación Biomédica de Málaga (IBIMA); Facultad de Psicología; Universidad de Málaga; Spain
| | - María Pedraz
- Unidad de Gestión Clínica de Salud Mental; Instituto de Investigación Biomédica de Málaga (IBIMA); Hospital Regional Universitario de Málaga; Spain
| | - Guillermo Estivill-Torrús
- Unidad de Gestión Clínica Intercentros de Neurociencias y ECAI de Microscopía; Instituto de Investigación Biomédica de Málaga (IBIMA); Hospitales Universitarios Regional de Málaga y Virgen de la Victoria; Spain
| | - Francisco Javier Pavón
- Unidad de Gestión Clínica de Salud Mental; Instituto de Investigación Biomédica de Málaga (IBIMA); Hospital Regional Universitario de Málaga; Spain
| | - Fernando Rodríguez de Fonseca
- Unidad de Gestión Clínica de Salud Mental; Instituto de Investigación Biomédica de Málaga (IBIMA); Hospital Regional Universitario de Málaga; Spain
| | - Luis J. Santín
- Departamento de Psicobiología y Metodología de las Ciencias del Comportamiento; Instituto de Investigación Biomédica de Málaga (IBIMA); Facultad de Psicología; Universidad de Málaga; Spain
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Duzel E, van Praag H, Sendtner M. Can physical exercise in old age improve memory and hippocampal function? Brain 2016; 139:662-73. [PMID: 26912638 PMCID: PMC4766381 DOI: 10.1093/brain/awv407] [Citation(s) in RCA: 196] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 12/19/2015] [Accepted: 12/21/2015] [Indexed: 01/19/2023] Open
Abstract
Physical exercise can convey a protective effect against cognitive decline in ageing and Alzheimer's disease. While the long-term health-promoting and protective effects of exercise are encouraging, it's potential to induce neuronal and vascular plasticity in the ageing brain is still poorly understood. It remains unclear whether exercise slows the trajectory of normal ageing by modifying vascular and metabolic risk factors and/or consistently boosts brain function by inducing structural and neurochemical changes in the hippocampus and related medial temporal lobe circuitry-brain areas that are important for learning and memory. Hence, it remains to be established to what extent exercise interventions in old age can improve brain plasticity above and beyond preservation of function. Existing data suggest that exercise trials aiming for improvement and preservation may require different outcome measures and that the balance between the two may depend on exercise intensity and duration, the presence of preclinical Alzheimer's disease pathology, vascular and metabolic risk factors and genetic variability.
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Affiliation(s)
- Emrah Duzel
- 1 Institute of Cognitive Neurology and Dementia Research, Otto-von-Guericke University Magdeburg, Leipziger Str. 44, 39120 Magdeburg, Germany 2 German Center for Neurodegenerative Diseases (DZNE), Leipziger Str. 44, 39120 Magdeburg, Germany 3 Institute of Cognitive Neuroscience, University College London, 17 Queen Square, London, UK
| | - Henriette van Praag
- 4 Neuroplasticity and Behavior Unit, Laboratory of Neurosciences, Intramural Research Program, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Michael Sendtner
- 5 Institute of Clinical Neurobiology, University of Würzburg, Versbacher Str. 5, 97078 Würzburg, Germany
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48
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Neuroinflammation negatively affects adult hippocampal neurogenesis and cognition: can exercise compensate? Neurosci Biobehav Rev 2016; 61:121-31. [DOI: 10.1016/j.neubiorev.2015.12.004] [Citation(s) in RCA: 125] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 11/20/2015] [Accepted: 12/09/2015] [Indexed: 01/09/2023]
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Micheli L, Ceccarelli M, Farioli-Vecchioli S, Tirone F. Control of the Normal and Pathological Development of Neural Stem and Progenitor Cells by the PC3/Tis21/Btg2 and Btg1 Genes. J Cell Physiol 2015; 230:2881-90. [DOI: 10.1002/jcp.25038] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Accepted: 05/05/2015] [Indexed: 12/12/2022]
Affiliation(s)
- Laura Micheli
- Institute of Cell Biology and Neurobiology; National Research Council; Fondazione S.Lucia Rome Italy
| | - Manuela Ceccarelli
- Institute of Cell Biology and Neurobiology; National Research Council; Fondazione S.Lucia Rome Italy
| | - Stefano Farioli-Vecchioli
- Institute of Cell Biology and Neurobiology; National Research Council; Fondazione S.Lucia Rome Italy
| | - Felice Tirone
- Institute of Cell Biology and Neurobiology; National Research Council; Fondazione S.Lucia Rome Italy
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Staples MC, Somkuwar SS, Mandyam CD. Developmental effects of wheel running on hippocampal glutamate receptor expression in young and mature adult rats. Neuroscience 2015. [PMID: 26220171 DOI: 10.1016/j.neuroscience.2015.07.058] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Recent evidence suggests that the behavioral benefits associated with voluntary wheel running in rodents may be due to modulation of glutamatergic transmission in the hippocampus, a brain region implicated in learning and memory. However, the expression of the glutamatergic ionotropic N-methyl-d-aspartate receptor (GluN) in the hippocampus in response to chronic sustained voluntary wheel running has not yet been investigated. Further, the developmental effects during young and mature adulthood on wheel running output and GluN expression in hippocampal subregions has not been determined, and therefore is the main focus of this investigation. Eight-week-old and 16-week-old male Wistar rats were housed in home cages with free access to running wheels and running output was monitored for 4weeks. Wheel access was terminated and tissues from the dorsal and ventral hippocampi were processed for Western blot analysis of GluN subunit expression. Young adult runners demonstrated an escalation in running output but this behavior was not evident in mature adult runners. In parallel, young adult runners demonstrated a significant increase in total GluN (1 and 2A) subunit expression in the dorsal hippocampus (DH), and an opposing effect in the ventral hippocampus (VH) compared to age-matched sedentary controls; these changes in total protein expression were not associated with significant alterations in the phosphorylation of the GluN subunits. In contrast, mature adult runners demonstrated a reduction in total GluN2A expression in the DH, without producing alterations in the VH compared to age-matched sedentary controls. In conclusion, differential running activity-mediated modulation of GluN subunit expression in the hippocampal subregions was revealed to be associated with developmental effects on running activity, which may contribute to altered hippocampal synaptic activity and behavioral outcomes in young and mature adult subjects.
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Affiliation(s)
- M C Staples
- Committee on the Neurobiology of Addictive Disorders, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - S S Somkuwar
- Committee on the Neurobiology of Addictive Disorders, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA
| | - C D Mandyam
- Committee on the Neurobiology of Addictive Disorders, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.
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