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Dacomo L, La Vitola P, Brunelli L, Messa L, Micotti E, Artioli L, Sinopoli E, Cecutti G, Leva S, Gagliardi S, Pansarasa O, Carelli S, Guaita A, Pastorelli R, Forloni G, Cereda C, Balducci C. Transcriptomic and metabolomic changes might predict frailty in SAMP8 mice. Aging Cell 2024:e14263. [PMID: 38961613 DOI: 10.1111/acel.14263] [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: 01/23/2024] [Revised: 05/21/2024] [Accepted: 06/21/2024] [Indexed: 07/05/2024] Open
Abstract
Frailty is a geriatric, multi-dimensional syndrome that reflects multisystem physiological change and is a transversal measure of reduced resilience to negative events. It is characterized by weakness, frequent falls, cognitive decline, increased hospitalization and dead and represents a risk factor for the development of Alzheimer's disease (AD). The fact that frailty is recognized as a reversible condition encourages the identification of earlier biomarkers to timely predict and prevent its occurrence. SAMP8 (Senescence-Accelerated Mouse Prone-8) mice represent the most appropriate preclinical model to this aim and were used in this study to carry transcriptional and metabolic analyses in the brain and plasma, respectively, upon a characterization at cognitive, motor, structural, and neuropathological level at 2.5, 6, and 9 months of age. At 2.5 months, SAMP8 mice started displaying memory deficits, muscle weakness, and motor impairment. Functional alterations were associated with a neurodevelopmental deficiency associated with reduced neuronal density and glial cell loss. Through transcriptomics, we identified specific genetic signatures well distinguishing SAMP8 mice at 6 months, whereas plasma metabolomics allowed to segregate SAMP8 mice from SAMR1 already at 2.5 months of age by detecting constitutively lower levels of acylcarnitines and lipids in SAMP8 at all ages investigated correlating with functional deficits and neuropathological signs. Our findings suggest that specific genetic alterations at central level, as well as metabolomic changes in plasma, might allow to early assess a frail condition leading to dementia development, which paves the foundation for future investigation in a clinical setting.
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Affiliation(s)
- Letizia Dacomo
- Department of Neuroscience, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Pietro La Vitola
- Department of Neuroscience, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Laura Brunelli
- Department of Environmental Health Sciences, Laboratory of Metabolites and Proteins in Translational Research, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Letizia Messa
- Department of Electronics, Information and Bioengineering (DEIB) Politecnico di Milano, Milan, Italy
- Department of Pediatrics, Center of Functional Genomics and Rare Diseases, Buzzi Children's Hospital, Milan, Italy
| | - Edoardo Micotti
- Department of Neuroscience, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Luisa Artioli
- Department of Neuroscience, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Elena Sinopoli
- Department of Neuroscience, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Greta Cecutti
- Department of Neuroscience, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Susanna Leva
- Department of Neuroscience, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Stella Gagliardi
- Molecular Biology and Transcriptomics, IRCCS Mondino Foundation, Pavia, Italy
| | - Orietta Pansarasa
- Cellular Model and Neuroepigenetics, IRCCS Mondino Foundation, Pavia, Italy
| | - Stephana Carelli
- Department of Pediatrics, Center of Functional Genomics and Rare Diseases, Buzzi Children's Hospital, Milan, Italy
- Department of Biomedical and Clinical Sciences, Pediatric Clinical Research Center "Romeo Ed Enrica Invernizzi", University of Milan, Milan, Italy
| | | | - Roberta Pastorelli
- Department of Environmental Health Sciences, Laboratory of Metabolites and Proteins in Translational Research, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Gianluigi Forloni
- Department of Neuroscience, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Cristina Cereda
- Department of Pediatrics, Center of Functional Genomics and Rare Diseases, Buzzi Children's Hospital, Milan, Italy
| | - Claudia Balducci
- Department of Neuroscience, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
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2
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Umino M, Okuda M, Ohkubo T, Fujii T, Matsubara K. Long-term intake of α-glycerophosphocholine (GPC) suppresses microglial inflammation and blood-brain barrier (BBB) disruption and promotes neurogenesis in senescence-accelerated mice prone 8 (SAMP8). Biosci Biotechnol Biochem 2023; 87:1537-1542. [PMID: 37723613 DOI: 10.1093/bbb/zbad135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Accepted: 09/11/2023] [Indexed: 09/20/2023]
Abstract
We evaluated the effects of long-term glycerophosphocholine (GPC) intake on microglia, the blood-brain barrier (BBB), and neurogenesis in senescence-accelerated mice prone 8 (SAMP8). The GPC intake suppressed microglial activation and BBB disruption and sustained doublecortin-positive cells in the hippocampus. The results indicate that GPC intake exerts anti-inflammatory and neuroprotective effects in the brain of aged mice.
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Affiliation(s)
- Mitsuki Umino
- Department of Human Life Science Education, Graduate School of Humanities and Social Sciences, Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan
| | - Mayumi Okuda
- Department of Human Life Science Education, Graduate School of Education, Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan
| | - Takeshi Ohkubo
- Department of Health Nutrition, Sendai Shirayuri Women's College, Sehndai, Miyagi, Japan
| | - Tsutomu Fujii
- Faculty of Food and Agricultural Sciences, Fukushima University, Fukushima, Japan
| | - Kiminori Matsubara
- Department of Human Life Science Education, Graduate School of Humanities and Social Sciences, Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan
- Department of Human Life Science Education, Graduate School of Education, Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan
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3
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Gómez-Oliva R, Martínez-Ortega S, Atienza-Navarro I, Domínguez-García S, Bernal-Utrera C, Geribaldi-Doldán N, Verástegui C, Ezzanad A, Hernández-Galán R, Nunez-Abades P, Garcia-Alloza M, Castro C. Rescue of neurogenesis and age-associated cognitive decline in SAMP8 mouse: Role of transforming growth factor-alpha. Aging Cell 2023:e13829. [PMID: 37177826 DOI: 10.1111/acel.13829] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 02/20/2023] [Accepted: 03/19/2023] [Indexed: 05/15/2023] Open
Abstract
Neuropathological aging is associated with memory impairment and cognitive decline, affecting several brain areas including the neurogenic niche of the dentate gyrus of the hippocampus (DG). In the healthy brain, homeostatic mechanisms regulate neurogenesis within the DG to facilitate the continuous generation of neurons from neural stem cells (NSC). Nevertheless, aging reduces the number of activated neural stem cells and diminishes the number of newly generated neurons. Strategies that promote neurogenesis in the DG may improve cognitive performance in the elderly resulting in the development of treatments to prevent the progression of neurological disorders in the aged population. Our work is aimed at discovering targeting molecules to be used in the design of pharmacological agents that prevent the neurological effects of brain aging. We study the effect of age on hippocampal neurogenesis using the SAMP8 mouse as a model of neuropathological aging. We show that in 6-month-old SAMP8 mice, episodic and spatial memory are impaired; concomitantly, the generation of neuroblasts and neurons is reduced and the generation of astrocytes is increased in this model. The novelty of our work resides in the fact that treatment of SAMP8 mice with a transforming growth factor-alpha (TGFα) targeting molecule prevents the observed defects, positively regulating neurogenesis and improving cognitive performance. This compound facilitates the release of TGFα in vitro and in vivo and activates signaling pathways initiated by this growth factor. We conclude that compounds of this kind that stimulate neurogenesis may be useful to counteract the neurological effects of pathological aging.
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Affiliation(s)
- Ricardo Gómez-Oliva
- Área de Fisiología, Facultad de Medicina, Universidad de Cádiz, Cádiz, Spain
- Instituto de Investigación e Innovación Biomédica de Cádiz (INIBICA), Cádiz, Spain
| | - Sergio Martínez-Ortega
- Área de Fisiología, Facultad de Medicina, Universidad de Cádiz, Cádiz, Spain
- Instituto de Investigación e Innovación Biomédica de Cádiz (INIBICA), Cádiz, Spain
| | - Isabel Atienza-Navarro
- Área de Fisiología, Facultad de Medicina, Universidad de Cádiz, Cádiz, Spain
- Instituto de Investigación e Innovación Biomédica de Cádiz (INIBICA), Cádiz, Spain
| | - Samuel Domínguez-García
- Área de Fisiología, Facultad de Medicina, Universidad de Cádiz, Cádiz, Spain
- Instituto de Investigación e Innovación Biomédica de Cádiz (INIBICA), Cádiz, Spain
| | - Carlos Bernal-Utrera
- Instituto de Investigación e Innovación Biomédica de Cádiz (INIBICA), Cádiz, Spain
- Departamento de Fisioterapia, Universidad de Sevilla, Seville, Spain
| | - Noelia Geribaldi-Doldán
- Instituto de Investigación e Innovación Biomédica de Cádiz (INIBICA), Cádiz, Spain
- Departamento de Anatomía y Embriología Humanas, Facultad de Medicina, Universidad de Cádiz, Cádiz, Spain
| | - Cristina Verástegui
- Instituto de Investigación e Innovación Biomédica de Cádiz (INIBICA), Cádiz, Spain
- Departamento de Anatomía y Embriología Humanas, Facultad de Medicina, Universidad de Cádiz, Cádiz, Spain
| | - Abdellah Ezzanad
- Instituto de Investigación e Innovación Biomédica de Cádiz (INIBICA), Cádiz, Spain
- Departamento de Química Orgánica, Universidad de Cádiz, Puerto Real, Spain
| | - Rosario Hernández-Galán
- Instituto de Investigación e Innovación Biomédica de Cádiz (INIBICA), Cádiz, Spain
- Departamento de Química Orgánica, Universidad de Cádiz, Puerto Real, Spain
| | - Pedro Nunez-Abades
- Instituto de Investigación e Innovación Biomédica de Cádiz (INIBICA), Cádiz, Spain
- Departamento de Fisiología, Universidad de Sevilla, Sevilla, Spain
| | - Monica Garcia-Alloza
- Área de Fisiología, Facultad de Medicina, Universidad de Cádiz, Cádiz, Spain
- Instituto de Investigación e Innovación Biomédica de Cádiz (INIBICA), Cádiz, Spain
| | - Carmen Castro
- Área de Fisiología, Facultad de Medicina, Universidad de Cádiz, Cádiz, Spain
- Instituto de Investigación e Innovación Biomédica de Cádiz (INIBICA), Cádiz, Spain
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4
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Optimized N-methyl-D-aspartate receptor antagonist exhibits hippocampal proneurogenic effects in aged senescence-accelerated mouse prone 8 mice. Neuroreport 2022; 33:623-628. [DOI: 10.1097/wnr.0000000000001825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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5
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Pačesová A, Holubová M, Hrubá L, Strnadová V, Neprašová B, Pelantová H, Kuzma M, Železná B, Kuneš J, Maletínská L. Age-related metabolic and neurodegenerative changes in SAMP8 mice. Aging (Albany NY) 2022; 14:7300-7327. [PMID: 36126192 PMCID: PMC9550245 DOI: 10.18632/aging.204284] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Accepted: 08/31/2022] [Indexed: 11/25/2022]
Abstract
The most important risk factor for the development of sporadic Alzheimer’s disease (AD) is ageing. Senescence accelerated mouse prone 8 (SAMP8) is a model of sporadic AD, with senescence accelerated resistant mouse (SAMR1) as a control. In this study, we aimed to determine the onset of senescence-induced neurodegeneration and the related potential therapeutic window using behavioral experiments, immunohistochemistry and western blotting in SAMP8 and SAMR1 mice at 3, 6 and 9 months of age. The Y-maze revealed significantly impaired working spatial memory of SAMP8 mice from the 6th month. With ageing, increasing plasma concentrations of proinflammatory cytokines in SAMP8 mice were detected as well as significantly increased astrocytosis in the cortex and microgliosis in the brainstem. Moreover, from the 3rd month, SAMP8 mice displayed a decreased number of neurons and neurogenesis in the hippocampus. From the 6th month, increased pathological phosphorylation of tau protein at Thr231 and Ser214 was observed in the hippocampi of SAMP8 mice. In conclusion, changes specific for neurodegenerative processes were observed between the 3rd and 6th month of age in SAMP8 mice; thus, potential neuroprotective interventions could be applied between these ages.
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Affiliation(s)
- Andrea Pačesová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague 166 10, Czech Republic
| | - Martina Holubová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague 166 10, Czech Republic
| | - Lucie Hrubá
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague 166 10, Czech Republic
| | - Veronika Strnadová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague 166 10, Czech Republic
| | - Barbora Neprašová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague 166 10, Czech Republic
| | - Helena Pelantová
- Institute of Microbiology of the Czech Academy of Sciences, Prague 142 00, Czech Republic
| | - Marek Kuzma
- Institute of Microbiology of the Czech Academy of Sciences, Prague 142 00, Czech Republic
| | - Blanka Železná
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague 166 10, Czech Republic
| | - Jaroslav Kuneš
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague 166 10, Czech Republic
- Institute of Physiology of the Czech Academy of Sciences, Prague 142 00, Czech Republic
| | - Lenka Maletínská
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague 166 10, Czech Republic
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6
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Cachán-Vega C, Vega-Naredo I, Potes Y, Bermejo-Millo JC, Rubio-González A, García-González C, Antuña E, Bermúdez M, Gutiérrez-Rodríguez J, Boga JA, Coto-Montes A, Caballero B. Chronic Treatment with Melatonin Improves Hippocampal Neurogenesis in the Aged Brain and Under Neurodegeneration. Molecules 2022; 27:molecules27175543. [PMID: 36080336 PMCID: PMC9457692 DOI: 10.3390/molecules27175543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 08/26/2022] [Accepted: 08/28/2022] [Indexed: 11/19/2022] Open
Abstract
Adult hippocampal neurogenesis is altered during aging and under different neuropsychiatric and neurodegenerative diseases. Melatonin shows neurogenic and neuroprotective properties during aging and neuropathological conditions. In this study, we evaluated the effects of chronic treatment with melatonin on different markers of neurodegeneration and hippocampal neurogenesis using immunohistochemistry in the aged and neurodegenerative brains of SAMP8 mice, which is an animal model of accelerated senescence that mimics aging-related Alzheimer’s pathology. Neurodegenerative processes observed in the brains of aged SAMP8 mice at 10 months of age include the presence of damaged neurons, disorganization in the layers of the brain cortex, alterations in neural processes and the length of neuronal prolongations and β-amyloid accumulation in the cortex and hippocampus. This neurodegeneration may be associated with neurogenic responses in the hippocampal dentate gyrus of these mice, since we observed a neurogenic niche of neural stem and progenitor/precursors cells in the hippocampus of SAMP8 mice. However, hippocampal neurogenesis seems to be compromised due to alterations in the cell survival, migration and/or neuronal maturation of neural precursor cells due to the neurodegeneration levels in these mice. Chronic treatment with melatonin for 9 months decreased these neurodegenerative processes and the neurodegeneration-induced neurogenic response. Noticeably, melatonin also induced recovery in the functionality of adult hippocampal neurogenesis in aged SAMP8 mice.
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Affiliation(s)
- Cristina Cachán-Vega
- Department of Morphology and Cell Biology, University of Oviedo, 33006 Oviedo, Asturias, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Asturias, Spain
| | - Ignacio Vega-Naredo
- Department of Morphology and Cell Biology, University of Oviedo, 33006 Oviedo, Asturias, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Asturias, Spain
- Instituto de Neurociencias del Principado de Asturias (INEUROPA), 33006 Oviedo, Asturias, Spain
| | - Yaiza Potes
- Department of Morphology and Cell Biology, University of Oviedo, 33006 Oviedo, Asturias, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Asturias, Spain
- Instituto de Neurociencias del Principado de Asturias (INEUROPA), 33006 Oviedo, Asturias, Spain
| | - Juan Carlos Bermejo-Millo
- Department of Morphology and Cell Biology, University of Oviedo, 33006 Oviedo, Asturias, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Asturias, Spain
- Instituto de Neurociencias del Principado de Asturias (INEUROPA), 33006 Oviedo, Asturias, Spain
| | - Adrian Rubio-González
- Department of Morphology and Cell Biology, University of Oviedo, 33006 Oviedo, Asturias, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Asturias, Spain
- Instituto de Neurociencias del Principado de Asturias (INEUROPA), 33006 Oviedo, Asturias, Spain
| | - Claudia García-González
- Department of Morphology and Cell Biology, University of Oviedo, 33006 Oviedo, Asturias, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Asturias, Spain
| | - Eduardo Antuña
- Department of Morphology and Cell Biology, University of Oviedo, 33006 Oviedo, Asturias, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Asturias, Spain
| | - Manuel Bermúdez
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Asturias, Spain
- Hospital Monte Naranco, 33012 Oviedo, Asturias, Spain
| | - José Gutiérrez-Rodríguez
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Asturias, Spain
- Hospital Monte Naranco, 33012 Oviedo, Asturias, Spain
| | - José Antonio Boga
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Asturias, Spain
| | - Ana Coto-Montes
- Department of Morphology and Cell Biology, University of Oviedo, 33006 Oviedo, Asturias, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Asturias, Spain
- Instituto de Neurociencias del Principado de Asturias (INEUROPA), 33006 Oviedo, Asturias, Spain
| | - Beatriz Caballero
- Department of Morphology and Cell Biology, University of Oviedo, 33006 Oviedo, Asturias, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Asturias, Spain
- Instituto de Neurociencias del Principado de Asturias (INEUROPA), 33006 Oviedo, Asturias, Spain
- Correspondence: ; Tel.: +34-98-510-2784
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7
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Zheng J. Hippocampal neurogenesis and pro‐neurogenic therapies for Alzheimer's disease. Animal Model Exp Med 2022; 5:3-14. [PMID: 35229998 PMCID: PMC8879631 DOI: 10.1002/ame2.12212] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 12/24/2021] [Accepted: 01/18/2022] [Indexed: 01/01/2023] Open
Abstract
Adult hippocampal neurogenesis (AHN) facilitates hippocampal circuits plasticity and regulates hippocampus‐dependent cognition and emotion. However, AHN malfunction has been widely reported in both human and animal models of Alzheimer's disease (AD), the most common form of dementia in the elderly. Pro‐neurogenic therapies including rescuing innate AHN, cell engraftment and glia‐neuron reprogramming hold great potential for compensating the neuronal loss and rewiring the degenerated neuronal network in AD, but there are still great challenges to be overcome. This review covers recent advances in unraveling the involvement of AHN in AD and highlights the prospect of emerging pro‐neurogenic remedies.
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Affiliation(s)
- Jie Zheng
- Department of Pharmacology Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education Key Laboratory of Basic Pharmacology of Guizhou Province Zunyi Medical University Zunyi China
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8
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Effect of low-intensity motor balance and coordination exercise on cognitive functions, hippocampal Aβ deposition, neuronal loss, neuroinflammation, and oxidative stress in a mouse model of Alzheimer's disease. Exp Neurol 2021; 337:113590. [PMID: 33388314 DOI: 10.1016/j.expneurol.2020.113590] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 12/18/2020] [Accepted: 12/28/2020] [Indexed: 11/21/2022]
Abstract
It is well known that physical exercise reduces the risk of Alzheimer's disease (AD) and age-related cognitive decline. However, its mechanisms are still not fully understood. This study aimed to investigate the effect of aging and rotarod exercise (Ex) on cognitive function and AD pathogenesis in the hippocampus using senescence-accelerated mice prone 8 (SAMP8). Cognitive functions clearly declined at 9-months of age. Amyloid-beta (Aβ) deposition, neuronal loss, and glia activation-induced neuroinflammation increased with aging. The rotarod Ex prevented the decline of cognitive functions corresponding to the suppression of Aβ deposition, neuroinflammation, neuronal loss, inducible nitric oxide synthase (NOS) activities, and neuronal NOS activities. In addition, the rotarod Ex suppressed proinflammatory M1 phenotype microglia and A1 phenotype astrocytes. Our findings suggest that low-intensity motor balance and coordination exercise prevented age-related cognitive decline in the early stage of AD progression, possibly through the suppression of hippocampal Aβ deposition, neuronal loss, oxidative stress, and neuroinflammation, including reduced M1 and A1 phenotypes microglia and astrocytes.
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9
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Dietary Protein Source Influences Brain Inflammation and Memory in a Male Senescence-Accelerated Mouse Model of Dementia. Mol Neurobiol 2020; 58:1312-1329. [PMID: 33169333 DOI: 10.1007/s12035-020-02191-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 10/29/2020] [Indexed: 12/21/2022]
Abstract
Dementia is a pathological condition characterized by a decline in memory, as well as in other cognitive and social functions. The cellular and molecular mechanisms of brain damage in dementia are not completely understood; however, neuroinflammation is involved. Evidence suggests that chronic inflammation may impair cognitive performance and that dietary protein source may differentially influence this process. Dietary protein source has previously been shown to modify systemic inflammation in mouse models. Thus, we aimed to investigate the effect of chronic dietary protein source substitution in an ageing and dementia male mouse model, the senescence-accelerated mouse-prone 8 (SAMP8) model. We observed that dietary protein source differentially modified memory as shown by inhibitory avoidance testing at 4 months of age. Also, dietary protein source differentially modified neuroinflammation and gliosis in male SAMP8 mice. Our results suggest that chronic dietary protein source substitution may influence brain ageing and memory-related mechanisms in male SAMP8 mice. Moreover, the choice of dietary protein source in mouse diets for experimental purposes may need to be carefully considered when interpreting results.
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10
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Iwata K, Wu Q, Ferdousi F, Sasaki K, Tominaga K, Uchida H, Arai Y, Szele FG, Isoda H. Sugarcane ( Saccharum officinarum L.) Top Extract Ameliorates Cognitive Decline in Senescence Model SAMP8 Mice: Modulation of Neural Development and Energy Metabolism. Front Cell Dev Biol 2020; 8:573487. [PMID: 33123536 PMCID: PMC7573230 DOI: 10.3389/fcell.2020.573487] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 09/03/2020] [Indexed: 12/13/2022] Open
Abstract
Age-related biological alterations in brain function increase the risk of mild cognitive impairment and dementia, a global problem exacerbated by aging populations in developed nations. Limited pharmacological therapies have resulted in attention turning to the promising role of medicinal plants and dietary supplements in the treatment and prevention of dementia. Sugarcane (Saccharum officinarum L.) top, largely considered as a by-product because of its low sugar content, in fact contains the most abundant amounts of antioxidant polyphenols relative to the rest of the plant. Given the numerous epidemiological studies on the effects of polyphenols on cognitive function, in this study, we analyzed polyphenolic constituents of sugarcane top and examined the effect of sugarcane top ethanolic extract (STEE) on a range of central nervous system functions in vitro and in vivo. Orally administrated STEE rescued spatial learning and memory deficit in the senescence-accelerated mouse prone 8 (SAMP8) mice, a non-transgenic strain that spontaneously develops a multisystemic aging phenotype including pathological features of Alzheimer's disease. This could be correlated with an increased number of hippocampal newborn neurons and restoration of cortical monoamine levels in STEE-fed SAMP8 mice. Global genomic analysis by microarray in cerebral cortices showed multiple potential mechanisms for the cognitive improvement. Gene set enrichment analysis (GSEA) revealed biological processes such as neurogenesis, neuron differentiation, and neuron development were significantly enriched in STEE-fed mice brain compared to non-treated SAMP8 mice. Furthermore, STEE treatment significantly regulated genes involved in neurotrophin signaling, glucose metabolism, and neural development in mice brain. Our in vitro results suggest that STEE treatment enhances the metabolic activity of neuronal cells promoting glucose metabolism with significant upregulation of genes, namely PGK1, PGAM1, PKM, and PC. STEE also stimulated proliferation of human neural stem cells (hNSCs), regulated bHLH factor expression and induced neuronal differentiation and astrocytic process lengthening. Altogether, our findings suggest the potential of STEE as a dietary intervention, with promising implications as a novel nutraceutical for cognitive health.
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Affiliation(s)
- Kengo Iwata
- School of Integrative and Global Majors, University of Tsukuba, Tsukuba, Japan.,Nippo Co., Ltd., Daito, Japan
| | - Qingqing Wu
- Alliance for Research on the Mediterranean and North Africa, University of Tsukuba, Tsukuba, Japan.,Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom
| | - Farhana Ferdousi
- Alliance for Research on the Mediterranean and North Africa, University of Tsukuba, Tsukuba, Japan.,AIST-University of Tsukuba Open Innovation Laboratory for Food and Medicinal Resource Engineering (FoodMed-OIL), AIST, University of Tsukuba, Tsukuba, Japan
| | - Kazunori Sasaki
- Alliance for Research on the Mediterranean and North Africa, University of Tsukuba, Tsukuba, Japan.,AIST-University of Tsukuba Open Innovation Laboratory for Food and Medicinal Resource Engineering (FoodMed-OIL), AIST, University of Tsukuba, Tsukuba, Japan
| | - Kenichi Tominaga
- AIST-University of Tsukuba Open Innovation Laboratory for Food and Medicinal Resource Engineering (FoodMed-OIL), AIST, University of Tsukuba, Tsukuba, Japan
| | | | | | - Francis G Szele
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom
| | - Hiroko Isoda
- School of Integrative and Global Majors, University of Tsukuba, Tsukuba, Japan.,Alliance for Research on the Mediterranean and North Africa, University of Tsukuba, Tsukuba, Japan.,AIST-University of Tsukuba Open Innovation Laboratory for Food and Medicinal Resource Engineering (FoodMed-OIL), AIST, University of Tsukuba, Tsukuba, Japan.,Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Japan
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11
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Liu F, Tian N, Zhang HQ, Li SH, Zhou QZ, Yang Y, Zheng J, Wang JZ. GSK-3β activation accelerates early-stage consumption of Hippocampal Neurogenesis in senescent mice. Theranostics 2020; 10:9674-9685. [PMID: 32863953 PMCID: PMC7449917 DOI: 10.7150/thno.43829] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 07/09/2020] [Indexed: 12/27/2022] Open
Abstract
Adult hippocampal neurogenesis (AHN) deficits contribute to the progression of cognitive impairments during accelerated senescence, with the mechanistic causes poorly understood. Glycogen synthase kinase-3β (GSK-3β) is a critical regulator in prenatal neurodevelopment. The present study aims to study whether and how GSK-3β regulates AHN during the accelerated senescence. Methods: AHN and AHN-dependent cognition and GSK-3β were evaluated in 3- and 6-month senescence-accelerated mice prone 8 (SAM-P8) and senescence resistant 1 (SAM-R1) mice, respectively. GSK-3β was selectively overexpressed in wild-type mice using adeno-associated virus, or knocked-out by crossbreeding with GSK-3β floxed mice in the neural stem cells (NSCs) of Nestin-Cre mice, or pharmacologically inhibited with SB216763 in SAM-P8 mice. AHN was evaluated by BrdU-, DCX-staining and retrovirus-labeling. Results: AHN transiently increased at 3-month, but dramatically dropped at 6-month of age in SAM-P8 mice with a simultaneous activation of GSK-3β at 3-month. Selective overexpression of GSK-3β in hippocampal NSCs of wildtype mice induced long-term AHN deficits due to an accelerated depletion of NSC pool, although it transiently increased the proliferation and survival of the newborn neurons. Pharmacologically inhibiting GSK-3β by SB216763 efficiently preserved AHN and improved contextual memory in 6-month SAM-P8 mice, while conditional knock-out of GSK-3β in NSCs impaired AHN. Conclusion: Early-stage activation of GSK-3β in NSCs impairs AHN by accelerating the depletion of NSC pool, and pharmacological inhibition of GSK-3β is efficient to preserve AHN during the accelerated aging. These results reveal novel mechanisms underlying the AHN impairments during accelerated senescence and provide new targets for pro-neurogenic therapies for related diseases.
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Affiliation(s)
- Fei Liu
- Department of Pathophysiology, Key Laboratory of Ministry of Education for Neurological Disorders, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
- Department of Human Anatomy, School of Basic Medicine, Binzhou Medical University, Yantai 264003, China
| | - Na Tian
- Department of Histology and Embryology, Key Laboratory of Ministry of Education of China for Neurological Disorders, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Hua-Qiu Zhang
- Key Laboratory of Ministry of Education for Neurological Disorders, Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Shi-Hong Li
- Department of Pathophysiology, Key Laboratory of Ministry of Education for Neurological Disorders, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Qiu-Zhi Zhou
- Department of Pathophysiology, Key Laboratory of Ministry of Education for Neurological Disorders, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Ying Yang
- Department of Pathophysiology, Key Laboratory of Ministry of Education for Neurological Disorders, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Jie Zheng
- Department of Pathophysiology, Key Laboratory of Ministry of Education for Neurological Disorders, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Jian-Zhi Wang
- Department of Pathophysiology, Key Laboratory of Ministry of Education for Neurological Disorders, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
- Key Laboratory of Ministry of Education for Neurological Disorders, Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
- Co-innovation Center of Neuroregeneration, Nantong University, Nantong 226000, China
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12
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Schouten M, Bielefeld P, Garcia-Corzo L, Passchier EMJ, Gradari S, Jungenitz T, Pons-Espinal M, Gebara E, Martín-Suárez S, Lucassen PJ, De Vries HE, Trejo JL, Schwarzacher SW, De Pietri Tonelli D, Toni N, Mira H, Encinas JM, Fitzsimons CP. Circadian glucocorticoid oscillations preserve a population of adult hippocampal neural stem cells in the aging brain. Mol Psychiatry 2020; 25:1382-1405. [PMID: 31222184 PMCID: PMC7303016 DOI: 10.1038/s41380-019-0440-2] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 04/09/2019] [Accepted: 04/29/2019] [Indexed: 12/17/2022]
Abstract
A decrease in adult hippocampal neurogenesis has been linked to age-related cognitive impairment. However, the mechanisms involved in this age-related reduction remain elusive. Glucocorticoid hormones (GC) are important regulators of neural stem/precursor cells (NSPC) proliferation. GC are released from the adrenal glands in ultradian secretory pulses that generate characteristic circadian oscillations. Here, we investigated the hypothesis that GC oscillations prevent NSPC activation and preserve a quiescent NSPC pool in the aging hippocampus. We found that hippocampal NSPC populations lacking expression of the glucocorticoid receptor (GR) decayed exponentially with age, while GR-positive populations decayed linearly and predominated in the hippocampus from middle age onwards. Importantly, GC oscillations controlled NSPC activation and GR knockdown reactivated NSPC proliferation in aged mice. When modeled in primary hippocampal NSPC cultures, GC oscillations control cell cycle progression and induce specific genome-wide DNA methylation profiles. GC oscillations induced lasting changes in the methylation state of a group of gene promoters associated with cell cycle regulation and the canonical Wnt signaling pathway. Finally, in a mouse model of accelerated aging, we show that disruption of GC oscillations induces lasting changes in dendritic complexity, spine numbers and morphology of newborn granule neurons. Together, these results indicate that GC oscillations preserve a population of GR-expressing NSPC during aging, preventing their activation possibly by epigenetic programming through methylation of specific gene promoters. Our observations suggest a novel mechanism mediated by GC that controls NSPC proliferation and preserves a dormant NSPC pool, possibly contributing to a neuroplasticity reserve in the aging brain.
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Affiliation(s)
- M Schouten
- Neuroscience Collaboration, Swammerdam Institute for Life Sciences, Faculty of Sciences, Amsterdam Neuroscience, University of Amsterdam, Amsterdam, The Netherlands
- Department of Molecular Cell Biology and Immunology, VU University Medical Center, Amsterdam Neuroscience, Amsterdam, The Netherlands
| | - P Bielefeld
- Neuroscience Collaboration, Swammerdam Institute for Life Sciences, Faculty of Sciences, Amsterdam Neuroscience, University of Amsterdam, Amsterdam, The Netherlands
| | - L Garcia-Corzo
- Biomedicine Institute of Valencia (IBV), Consejo Superior de Investigaciones Científicas (CSIC), Valencia, Spain
| | - E M J Passchier
- Neuroscience Collaboration, Swammerdam Institute for Life Sciences, Faculty of Sciences, Amsterdam Neuroscience, University of Amsterdam, Amsterdam, The Netherlands
| | - S Gradari
- Cajal Institute, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - T Jungenitz
- Institute of Clinical Neuroanatomy, Neuroscience Center, Goethe-University Frankfurt, Frankfurt am Main, Germany
| | - M Pons-Espinal
- Neurobiology of miRNA Lab, Neuroscience and Brain Technologies Department, Istituto Italiano di Tecnologia, Genoa, Italy
| | - E Gebara
- Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | | | - P J Lucassen
- Neuroscience Collaboration, Swammerdam Institute for Life Sciences, Faculty of Sciences, Amsterdam Neuroscience, University of Amsterdam, Amsterdam, The Netherlands
| | - H E De Vries
- Department of Molecular Cell Biology and Immunology, VU University Medical Center, Amsterdam Neuroscience, Amsterdam, The Netherlands
| | - J L Trejo
- Cajal Institute, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
| | - S W Schwarzacher
- Institute of Clinical Neuroanatomy, Neuroscience Center, Goethe-University Frankfurt, Frankfurt am Main, Germany
| | - D De Pietri Tonelli
- Neurobiology of miRNA Lab, Neuroscience and Brain Technologies Department, Istituto Italiano di Tecnologia, Genoa, Italy
| | - N Toni
- Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - H Mira
- Biomedicine Institute of Valencia (IBV), Consejo Superior de Investigaciones Científicas (CSIC), Valencia, Spain
| | - J M Encinas
- Achucarro Basque Center for Neuroscience, Leioa, Spain
- Ikerbasque, The Basque Foundation for Science, Bilbao, Spain
- University of the Basque Country (UPV/EHU), Leioa, Spain
| | - C P Fitzsimons
- Neuroscience Collaboration, Swammerdam Institute for Life Sciences, Faculty of Sciences, Amsterdam Neuroscience, University of Amsterdam, Amsterdam, The Netherlands.
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13
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Noggin rescues age-related stem cell loss in the brain of senescent mice with neurodegenerative pathology. Proc Natl Acad Sci U S A 2018; 115:11625-11630. [PMID: 30352848 PMCID: PMC6233090 DOI: 10.1073/pnas.1813205115] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Alzheimer’s disease (AD) is the most common cause of age-related neurodegeneration. Damage initially occurs in the hippocampus, a neurogenic brain region essential in forming memories. Since there is no cure for AD, therapeutic strategies that may aid to slow hippocampal dysfunction are necessary. We describe the precocious hippocampal stem cell loss of a mouse model that mimics the onset of pathological AD-like neurodegeneration. The loss is due to an increase in BMP6 that limits neurogenesis. We demonstrate that blocking BMP signaling by means of Noggin administration is beneficial to the hippocampal microenvironment, restoring stem cell numbers, neurogenesis, and behavior. Our findings support further development of BMP antagonists into translatable molecules for the rescue of stem cells and neurogenesis in neurodegeneration/aging. Increasing age is the greatest known risk factor for the sporadic late-onset forms of neurodegenerative disorders such as Alzheimer’s disease (AD). One of the brain regions most severely affected in AD is the hippocampus, a privileged structure that contains adult neural stem cells (NSCs) with neurogenic capacity. Hippocampal neurogenesis decreases during aging and the decrease is exacerbated in AD, but the mechanistic causes underlying this progressive decline remain largely unexplored. We here investigated the effect of age on NSCs and neurogenesis by analyzing the senescence accelerated mouse prone 8 (SAMP8) strain, a nontransgenic short-lived strain that spontaneously develops a pathological profile similar to that of AD and that has been employed as a model system to study the transition from healthy aging to neurodegeneration. We show that SAMP8 mice display an accelerated loss of the NSC pool that coincides with an aberrant rise in BMP6 protein, enhanced canonical BMP signaling, and increased astroglial differentiation. In vitro assays demonstrate that BMP6 severely impairs NSC expansion and promotes NSC differentiation into postmitotic astrocytes. Blocking the dysregulation of the BMP pathway and its progliogenic effect in vivo by intracranial delivery of the antagonist Noggin restores hippocampal NSC numbers, neurogenesis, and behavior in SAMP8 mice. Thus, manipulating the local microenvironment of the NSC pool counteracts hippocampal dysfunction in pathological aging. Our results shed light on interventions that may allow taking advantage of the brain’s natural plastic capacity to enhance cognitive function in late adulthood and in chronic neurodegenerative diseases such as AD.
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14
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Okuyama S, Kotani Y, Yamamoto K, Sawamoto A, Sugawara K, Sudo M, Ohkubo Y, Tamanaha A, Nakajima M, Furukawa Y. The peel of Citrus kawachiensis (kawachi bankan) ameliorates microglial activation, tau hyper-phosphorylation, and suppression of neurogenesis in the hippocampus of senescence-accelerated mice. Biosci Biotechnol Biochem 2018; 82:869-878. [PMID: 29424280 DOI: 10.1080/09168451.2018.1433993] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
We previously reported that the dried peel powder of Citrus kawachiensis, one of the citrus products of Ehime, Japan, exerted anti-inflammatory effects in the brain of a lipopolysaccharide-injected systemic inflammation animal model. Inflammation is one of the main mechanisms underlying aging in the brain; therefore, we herein evaluated the anti-inflammatory and other effects of the dried peel powder of C. kawachiensis in the senescence-accelerated mouse-prone 8 (SAMP8) model. The C. kawachiensis treatment inhibited microglial activation in the hippocampus, the hyper-phosphorylation of tau at 231 of threonine in hippocampal neurons, and ameliorated the suppression of neurogenesis in the dentate gyrus of the hippocampus. These results suggest that the dried peel powder of C. kawachiensis exert anti-inflammatory and neuroprotective effects.
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Affiliation(s)
- Satoshi Okuyama
- a Department of Pharmaceutical Pharmacology, College of Pharmaceutical Sciences , Matsuyama University , Matsuyama , Japan
| | - Yoshimi Kotani
- a Department of Pharmaceutical Pharmacology, College of Pharmaceutical Sciences , Matsuyama University , Matsuyama , Japan
| | - Kana Yamamoto
- a Department of Pharmaceutical Pharmacology, College of Pharmaceutical Sciences , Matsuyama University , Matsuyama , Japan
| | - Atsushi Sawamoto
- a Department of Pharmaceutical Pharmacology, College of Pharmaceutical Sciences , Matsuyama University , Matsuyama , Japan
| | - Kuniaki Sugawara
- b Department of Planning and Development , Ehime Beverage Inc ., Matsuyama , Japan
| | - Masahiko Sudo
- b Department of Planning and Development , Ehime Beverage Inc ., Matsuyama , Japan
| | - Yuu Ohkubo
- a Department of Pharmaceutical Pharmacology, College of Pharmaceutical Sciences , Matsuyama University , Matsuyama , Japan
| | - Arisa Tamanaha
- a Department of Pharmaceutical Pharmacology, College of Pharmaceutical Sciences , Matsuyama University , Matsuyama , Japan
| | - Mitsunari Nakajima
- a Department of Pharmaceutical Pharmacology, College of Pharmaceutical Sciences , Matsuyama University , Matsuyama , Japan
| | - Yoshiko Furukawa
- a Department of Pharmaceutical Pharmacology, College of Pharmaceutical Sciences , Matsuyama University , Matsuyama , Japan
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15
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Wang X, Tao S, Cong P, Wang Y, Xu J, Xue C. Neuroprotection of Strongylocentrotus nudus gangliosides against Alzheimer’s disease via regulation of neurite loss and mitochondrial apoptosis. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.03.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
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16
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Griñan-Ferré C, Palomera-Ávalos V, Puigoriol-Illamola D, Camins A, Porquet D, Plá V, Aguado F, Pallàs M. Behaviour and cognitive changes correlated with hippocampal neuroinflammaging and neuronal markers in female SAMP8, a model of accelerated senescence. Exp Gerontol 2016; 80:57-69. [PMID: 27094468 DOI: 10.1016/j.exger.2016.03.014] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 03/16/2016] [Accepted: 03/23/2016] [Indexed: 01/08/2023]
Abstract
Senescence accelerated mice P8 (SAMP8) is a phenotypic model of age, characterized by deficits in memory and altered behaviour. Here, we determined the effect of age in SAMP8, and compared with the resistant strain, SAMR1, in behaviour and learning parameters linking these disturbances with oxidative stress environment. We found impairment in emotional behaviour with regard to fear and anxiety in young SAMP8 vs. age-mated SAMR1. Differences were attenuated with age. In contrast, learning capabilities are worse in SAMP8, both in young and aged animals, with regard to SAMR1. These waves in behaviour and cognition were correlated with an excess of oxidative stress (OS) in SAMP8 at younger ages that diminished with age. In this manner, we found changes in the hippocampal expression of ALDH2, IL-6, HMOX1, COX2, CXCL10, iNOS, and MCP-1 with an altered amyloidogenic pathway by increasing the Amyloid beta precursor protein (APP) and BACE1, and reduced ADAM10 expression; in addition, astrogliosis and neuronal markers decreased. Moreover, Superoxide dismutase 1 (SOD1) and Nuclear factor-kappa beta (NF-kβ) expression and protein levels were higher in younger SAMP8 than in SAMR1. In conclusion, the accelerated senescence process present in SAMP8 can be linked with an initial deregulation in redox homeostasis, named neuroinflammaging, by inducing molecular changes that lead to neuroinflammation and the neurodegenerative process. These changes are reflected in the emotional and cognitive behaviour of SAMP8 that differs from that of SAMR1 and that highlighted the importance of earlier oxidative processes in the onset of neurodegeneration.
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Affiliation(s)
- Christian Griñan-Ferré
- Department of Pharmacology and Therapeutic Chemistry, Institute of Neuroscience, University of Barcelona, Avda. Joan XXIII, 27, 08028 Barcelona, Spain
| | - Verónica Palomera-Ávalos
- Department of Pharmacology and Therapeutic Chemistry, Institute of Neuroscience, University of Barcelona, Avda. Joan XXIII, 27, 08028 Barcelona, Spain
| | - Dolors Puigoriol-Illamola
- Department of Pharmacology and Therapeutic Chemistry, Institute of Neuroscience, University of Barcelona, Avda. Joan XXIII, 27, 08028 Barcelona, Spain
| | - Antoni Camins
- Department of Pharmacology and Therapeutic Chemistry, Institute of Neuroscience, University of Barcelona, Avda. Joan XXIII, 27, 08028 Barcelona, Spain
| | - David Porquet
- Department of Pharmacology and Therapeutic Chemistry, Institute of Neuroscience, University of Barcelona, Avda. Joan XXIII, 27, 08028 Barcelona, Spain
| | - Virginia Plá
- Department of Cellular Biology, Institute of Biomedicine (IBUB), University of Barcelona, Avda. Diagonal 646, 08028 Barcelona, Spain
| | - Fernando Aguado
- Department of Cellular Biology, Institute of Biomedicine (IBUB), University of Barcelona, Avda. Diagonal 646, 08028 Barcelona, Spain
| | - Mercè Pallàs
- Department of Pharmacology and Therapeutic Chemistry, Institute of Neuroscience, University of Barcelona, Avda. Joan XXIII, 27, 08028 Barcelona, Spain.
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17
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Kanouchi H, Kakimoto T, Nakano H, Suzuki M, Nakai Y, Shiozaki K, Akikoka K, Otomaru K, Nagano M, Matsumoto M. The Brewed Rice Vinegar Kurozu Increases HSPA1A Expression and Ameliorates Cognitive Dysfunction in Aged P8 Mice. PLoS One 2016; 11:e0150796. [PMID: 26943920 PMCID: PMC4778952 DOI: 10.1371/journal.pone.0150796] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 02/10/2016] [Indexed: 01/06/2023] Open
Abstract
Kurozu is a traditional Japanese rice vinegar. During fermentation and aging of the Kurozu liquid in an earthenware jar over 1 year, a solid residue called Kurozu Moromi is produced. In the present study, we evaluated whether concentrated Kurozu or Kurozu Moromi could ameliorate cognitive dysfunction in the senescence-accelerated P8 mouse. Senescence-accelerated P8 mice were fed 0.25% (w/w) concentrated Kurozu or 0.5% (w/w) Kurozu Moromi for 4 or 25 weeks. Kurozu suppressed cognitive dysfunction and amyloid accumulation in the brain, while Kurozu Moromi showed a tendency to ameliorate cognitive dysfunction, but the effect was not significant. We hypothesize that concentrated Kurozu has an antioxidant effect; however, the level of lipid peroxidation in the brain did not differ in senescence-accelerated P8 mice. DNA microarray analysis indicated that concentrated Kurozu increased HSPA1A mRNA expression, a protein that prevents protein misfolding and aggregation. The increase in HSPA1A expression by Kurozu was confirmed using quantitative real-time PCR and immunoblotting methods. The suppression of amyloid accumulation by concentrated Kurozu may be associated with HSPA1A induction. However, concentrated Kurozu could not increase HSPA1A expression in mouse primary neurons, suggesting it may not directly affect neurons.
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Affiliation(s)
- Hiroaki Kanouchi
- Department of Veterinary Pathobiology, Joint Faculty of Veterinary Medicine, Kagoshima University, Korimoto, Kagoshima, Japan
- * E-mail:
| | - Toshiaki Kakimoto
- Department of Veterinary Pathobiology, Joint Faculty of Veterinary Medicine, Kagoshima University, Korimoto, Kagoshima, Japan
| | - Hideya Nakano
- Department of Veterinary Pathobiology, Joint Faculty of Veterinary Medicine, Kagoshima University, Korimoto, Kagoshima, Japan
| | - Masahiro Suzuki
- Department of Veterinary Pathobiology, Joint Faculty of Veterinary Medicine, Kagoshima University, Korimoto, Kagoshima, Japan
| | - Yuji Nakai
- Institute for Food Sciences, Hirosaki University, Yanagawa, Aomori, Japan
| | - Kazuhiro Shiozaki
- Faculty of Fisheries, Kagoshima University, Shimoarata, Kagoshima, Japan
| | - Kohei Akikoka
- Department of Veterinary Histopathology, Joint Faculty of Veterinary Medicine, Kagoshima University, Korimoto, Kagoshima, Japan
| | - Konosuke Otomaru
- Veterinary Clinical Center, Joint Faculty of Veterinary Medicine, Kagoshima University, Korimoto, Kagoshima, Japan
| | | | - Mitsuharu Matsumoto
- Department of Veterinary Anatomy, Joint Faculty of Veterinary Medicine, Kagoshima University, Korimoto, Kagoshima, Japan
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18
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Nakai M, Iizuka M, Matsui N, Hosogi K, Imai A, Abe N, Shiraishi H, Hirata A, Yagi Y, Jobu K, Yokota J, Kato E, Hosoda S, Yoshioka S, Harada K, Kubo M, Fukuyama Y, Miyamura M. Bangle (Zingiber purpureum) Improves Spatial Learning, Reduces Deficits in Memory, and Promotes Neurogenesis in the Dentate Gyrus of Senescence-Accelerated Mouse P8. J Med Food 2016; 19:435-41. [PMID: 26829513 DOI: 10.1089/jmf.2015.3562] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Bangle (Zingiber purpureum) is a tropical ginger that is used as a spice in Southeast Asia. Phenylbutenoid dimers isolated from Bangle have exhibited neurotrophic effects in primary cultured rat cortical neurons and PC12 cells. Furthermore, chronic treatment with phenylbutenoid dimers enhances hippocampal neurogenesis in olfactory bulbectomized mice. In this study, we investigated the effects of Bangle extract on behavior and hippocampal neurogenesis in vivo. SAMP8 mice, which are an established model for accelerated aging, with age-related learning and memory impairments, were given a Bangle-containing diet for 1 month, and subsequent behavioral tests and immunohistochemistry for Ki67, a proliferating cell marker, were performed. We found that the Bangle-containing diet improved spatial learning and memory deficits in the Morris water maze and significantly increased the numbers of Ki67-positive cells in the dentate gyrus of the SAMP8 mice. In addition, the Bangle extract exhibited a neurotrophin-like activity as indicated by the induction of neurite sprouting in PC12 cells. Our results suggest that Bangle is beneficial for the prevention of age-related progression of cognitive impairment.
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Affiliation(s)
- Megumi Nakai
- 1 Department of Pharmacy, Kochi Medical Graduate School , Kochi, Japan .,2 Department of Pharmacy, Kochi Medical School Hospital , Kochi, Japan
| | - Michiro Iizuka
- 2 Department of Pharmacy, Kochi Medical School Hospital , Kochi, Japan
| | - Nobuaki Matsui
- 3 Faculty of Pharmaceutical Sciences, Tokushima Bunri University , Tokushima, Japan
| | - Kazuko Hosogi
- 1 Department of Pharmacy, Kochi Medical Graduate School , Kochi, Japan
| | - Akiko Imai
- 2 Department of Pharmacy, Kochi Medical School Hospital , Kochi, Japan
| | - Noriaki Abe
- 1 Department of Pharmacy, Kochi Medical Graduate School , Kochi, Japan .,2 Department of Pharmacy, Kochi Medical School Hospital , Kochi, Japan
| | - Hisashi Shiraishi
- 1 Department of Pharmacy, Kochi Medical Graduate School , Kochi, Japan .,2 Department of Pharmacy, Kochi Medical School Hospital , Kochi, Japan
| | - Ayumu Hirata
- 1 Department of Pharmacy, Kochi Medical Graduate School , Kochi, Japan .,2 Department of Pharmacy, Kochi Medical School Hospital , Kochi, Japan
| | - Yusuke Yagi
- 1 Department of Pharmacy, Kochi Medical Graduate School , Kochi, Japan .,2 Department of Pharmacy, Kochi Medical School Hospital , Kochi, Japan
| | - Kohei Jobu
- 2 Department of Pharmacy, Kochi Medical School Hospital , Kochi, Japan
| | - Junko Yokota
- 2 Department of Pharmacy, Kochi Medical School Hospital , Kochi, Japan
| | | | | | - Saburo Yoshioka
- 3 Faculty of Pharmaceutical Sciences, Tokushima Bunri University , Tokushima, Japan
| | - Kenichi Harada
- 3 Faculty of Pharmaceutical Sciences, Tokushima Bunri University , Tokushima, Japan
| | - Miwa Kubo
- 3 Faculty of Pharmaceutical Sciences, Tokushima Bunri University , Tokushima, Japan
| | - Yoshiyasu Fukuyama
- 3 Faculty of Pharmaceutical Sciences, Tokushima Bunri University , Tokushima, Japan
| | - Mitsuhiko Miyamura
- 1 Department of Pharmacy, Kochi Medical Graduate School , Kochi, Japan .,2 Department of Pharmacy, Kochi Medical School Hospital , Kochi, Japan
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19
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Sawano E, Iwatani K, Tominaga-Yoshino K, Ogura A, Tashiro T. Reduction in NPY-positive neurons and dysregulation of excitability in young senescence-accelerated mouse prone 8 (SAMP8) hippocampus precede the onset of cognitive impairment. J Neurochem 2015; 135:287-300. [PMID: 26250996 DOI: 10.1111/jnc.13274] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 07/16/2015] [Accepted: 07/28/2015] [Indexed: 12/16/2023]
Abstract
The senescence-accelerated mouse prone 8 (SAMP8) strain is considered a neurodegeneration model showing age-related cognitive deficits with little physical impairment. Young SAMP8 mice, however, exhibit signs of disturbances in development such as marked hyperactivity and reduced anxiety well before the onset of cognitive impairment. As the key enzyme in local regulation of thyroid hormone (TH) signaling, type 2 deiodinase, was significantly reduced in the SAMP8 hippocampus relative to that of the normally aging SAM-resistant 1 (SAMR1), we used these two strains to compare the development of the hippocampal GABAergic system, which is known to be strongly affected by hypothyroidism. Among GABAergic components, neuronal K+ /Cl- co-transporter 2 was down-regulated in SAMP8 transiently at 2 weeks. Although distribution of total GABAergic neurons was similar in both strains, 22-30% reduction was observed in the neuropeptide Y (NPY)-positive subpopulation of GABAergic neurons in SAMP8. Electrophysiological studies on hippocampal slices obtained at 4 weeks revealed that epileptiform activity, induced by high-frequency stimulation, lasted four times longer in SAMP8 compared with SAMR1, indicating a dysregulation of excitability that may be linked to the behavioral abnormalities of young SAMP8 and to neurodegeneration later on in life. Local attenuation of TH signaling may thus impact the normal development of the GABAergic system.
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Affiliation(s)
- Erika Sawano
- Department of Chemistry & Biological Science, School of Science & Engineering, Aoyama Gakuin University, Sagamihara, Kanagawa, Japan
| | - Kanako Iwatani
- Department of Chemistry & Biological Science, School of Science & Engineering, Aoyama Gakuin University, Sagamihara, Kanagawa, Japan
| | - Keiko Tominaga-Yoshino
- Department of Neuroscience, Osaka University Graduate School of Frontier Biosciences, Suita, Osaka, Japan
| | - Akihiko Ogura
- Department of Neuroscience, Osaka University Graduate School of Frontier Biosciences, Suita, Osaka, Japan
| | - Tomoko Tashiro
- Department of Chemistry & Biological Science, School of Science & Engineering, Aoyama Gakuin University, Sagamihara, Kanagawa, Japan
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20
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Soriano‐Cantón R, Perez‐Villalba A, Morante‐Redolat JM, Marqués‐Torrejón MÁ, Pallás M, Pérez‐Sánchez F, Fariñas I. Regulation of the p19(Arf)/p53 pathway by histone acetylation underlies neural stem cell behavior in senescence-prone SAMP8 mice. Aging Cell 2015; 14:453-62. [PMID: 25728253 PMCID: PMC4406674 DOI: 10.1111/acel.12328] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/13/2015] [Indexed: 01/24/2023] Open
Abstract
Brain aging is associated with increased neurodegeneration and reduced neurogenesis. B1/neural stem cells (B1-NSCs) of the mouse subependymal zone (SEZ) support the ongoing production of olfactory bulb interneurons, but their neurogenic potential is progressively reduced as mice age. Although age-related changes in B1-NSCs may result from increased expression of tumor suppressor proteins, accumulation of DNA damage, metabolic alterations, and microenvironmental or systemic changes, the ultimate causes remain unclear. Senescence-accelerated-prone mice (SAMP8) relative to senescence-accelerated-resistant mice (SAMR1) exhibit signs of hastened senescence and can be used as a model for the study of aging. We have found that the B1-NSC compartment is transiently expanded in young SAMP8 relative to SAMR1 mice, resulting in disturbed cytoarchitecture of the SEZ, B1-NSC hyperproliferation, and higher yields of primary neurospheres. These unusual features are, however, accompanied by premature loss of B1-NSCs. Moreover, SAMP8 neurospheres lack self-renewal and enter p53-dependent senescence after only two passages. Interestingly, in vitro senescence of SAMP8 cells could be prevented by inhibition of histone acetyltransferases and mimicked in SAMR1 cells by inhibition of histone deacetylases (HDAC). Our data indicate that expression of the tumor suppressor p19, but not of p16, is increased in SAMP8 neurospheres, as well as in SAMR1 neurospheres upon HDAC inhibition, and suggest that the SAMP8 phenotype may, at least in part, be due to changes in chromatin status. Interestingly, acute HDAC inhibition in vivo resulted in changes in the SEZ of SAMR1 mice that resembled those found in young SAMP8 mice.
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Affiliation(s)
- Raúl Soriano‐Cantón
- Centro de Investigación Biomédica en Red en Enfermedades Neurodegenerativas (CIBERNED) Universidad de Valencia Burjassot 46100 Spain
- Departamento de Biología Celular Universidad de Valencia Burjassot 46100Spain
| | - Ana Perez‐Villalba
- Centro de Investigación Biomédica en Red en Enfermedades Neurodegenerativas (CIBERNED) Universidad de Valencia Burjassot 46100 Spain
- Departamento de Biología Celular Universidad de Valencia Burjassot 46100Spain
| | - José Manuel Morante‐Redolat
- Centro de Investigación Biomédica en Red en Enfermedades Neurodegenerativas (CIBERNED) Universidad de Valencia Burjassot 46100 Spain
- Departamento de Biología Celular Universidad de Valencia Burjassot 46100Spain
| | - María Ángeles Marqués‐Torrejón
- Centro de Investigación Biomédica en Red en Enfermedades Neurodegenerativas (CIBERNED) Universidad de Valencia Burjassot 46100 Spain
- Departamento de Biología Celular Universidad de Valencia Burjassot 46100Spain
| | - Mercé Pallás
- Centro de Investigación Biomédica en Red en Enfermedades Neurodegenerativas (CIBERNED) Universidad de Valencia Burjassot 46100 Spain
- Departamento de Farmacología y Química Terapéutica Instituto de Biomedicina de la Universidad de Barcelona Barcelona 08028Spain
| | - Francisco Pérez‐Sánchez
- Centro de Investigación Biomédica en Red en Enfermedades Neurodegenerativas (CIBERNED) Universidad de Valencia Burjassot 46100 Spain
- Departamento de Biología Celular Universidad de Valencia Burjassot 46100Spain
| | - Isabel Fariñas
- Centro de Investigación Biomédica en Red en Enfermedades Neurodegenerativas (CIBERNED) Universidad de Valencia Burjassot 46100 Spain
- Departamento de Biología Celular Universidad de Valencia Burjassot 46100Spain
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Castro-Garcia P, Díaz-Moreno M, Gil-Gas C, Fernández-Gómez FJ, Honrubia-Gómez P, Álvarez-Simón CB, Sánchez-Sánchez F, Cano JCC, Almeida F, Blanco V, Jordán J, Mira H, Ramírez-Castillejo C. Defects in subventricular zone pigmented epithelium-derived factor niche signaling in the senescence-accelerated mouse prone-8. FASEB J 2015; 29:1480-92. [PMID: 25636741 DOI: 10.1096/fj.13-244442] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Accepted: 12/05/2014] [Indexed: 12/27/2022]
Abstract
We studied potential changes in the subventricular zone (SVZ) stem cell niche of the senescence-accelerated mouse prone-8 (SAM-P8) aging model. Bromodeoxyuridine (BrdU) assays with longtime survival revealed a lower number of label-retaining stem cells in the SAM-P8 SVZ compared with the SAM-Resistant 1 (SAM-R1) control strain. We also found that in SAM-P8 niche signaling is attenuated and the stem cell pool is less responsive to the self-renewal niche factor pigmented epithelium-derived factor (PEDF). Protein analysis demonstrated stable amounts of the PEDF ligand in the SAM-P8 SVZ niche; however, SAM-P8 stem cells present a significant expression decrease of patatin-like phospholipase domain containing 2, a receptor for PEDF (PNPLA2-PEDF) receptor, but not of laminin receptor (LR), a receptor for PEDF (LR-PEDF) receptor. We observed changes in self-renewal related genes (hairy and enhancer of split 1 (Hes1), hairy and enhancer of split 1 (Hes5), Sox2] and report that although these genes are down-regulated in SAM-P8, differentiation genes (Pax6) are up-regulated and neurogenesis is increased. Finally, sheltering mammalian telomere complexes might be also involved given a down-regulation of telomeric repeat binding factor 1 (Terf1) expression was observed in SAM-P8 at young age periods. Differences between these 2 models, SAM-P8 and SAM-R1 controls, have been previously detected at more advanced ages. We now describe alterations in the PEDF signaling pathway and stem cell self-renewal at a very young age, which could be involved in the premature senescence observed in the SAM-P8 model.
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Affiliation(s)
- Paola Castro-Garcia
- *Laboratorio de Células Madre, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha, Albacete, Spain; Unidad Funcional de Investigación en Enfermedades Crónicas, Instituto de Salud Carlos III, Madrid, Spain; Grupo de Neurofarmacología, Departamento de Ciencias Médicas, Area de Genética, Facultad de Medicina de Albacete, and Instituto de Investigación en Discapacidades Neurológicas, Universidad de Castilla-La Mancha, Albacete, Spain; and Departamento Estadística, I. O. y Computación, Universidad de La Laguna, La Laguna, Canarias, Spain
| | - María Díaz-Moreno
- *Laboratorio de Células Madre, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha, Albacete, Spain; Unidad Funcional de Investigación en Enfermedades Crónicas, Instituto de Salud Carlos III, Madrid, Spain; Grupo de Neurofarmacología, Departamento de Ciencias Médicas, Area de Genética, Facultad de Medicina de Albacete, and Instituto de Investigación en Discapacidades Neurológicas, Universidad de Castilla-La Mancha, Albacete, Spain; and Departamento Estadística, I. O. y Computación, Universidad de La Laguna, La Laguna, Canarias, Spain
| | - Carmen Gil-Gas
- *Laboratorio de Células Madre, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha, Albacete, Spain; Unidad Funcional de Investigación en Enfermedades Crónicas, Instituto de Salud Carlos III, Madrid, Spain; Grupo de Neurofarmacología, Departamento de Ciencias Médicas, Area de Genética, Facultad de Medicina de Albacete, and Instituto de Investigación en Discapacidades Neurológicas, Universidad de Castilla-La Mancha, Albacete, Spain; and Departamento Estadística, I. O. y Computación, Universidad de La Laguna, La Laguna, Canarias, Spain
| | - Francisco J Fernández-Gómez
- *Laboratorio de Células Madre, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha, Albacete, Spain; Unidad Funcional de Investigación en Enfermedades Crónicas, Instituto de Salud Carlos III, Madrid, Spain; Grupo de Neurofarmacología, Departamento de Ciencias Médicas, Area de Genética, Facultad de Medicina de Albacete, and Instituto de Investigación en Discapacidades Neurológicas, Universidad de Castilla-La Mancha, Albacete, Spain; and Departamento Estadística, I. O. y Computación, Universidad de La Laguna, La Laguna, Canarias, Spain
| | - Paloma Honrubia-Gómez
- *Laboratorio de Células Madre, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha, Albacete, Spain; Unidad Funcional de Investigación en Enfermedades Crónicas, Instituto de Salud Carlos III, Madrid, Spain; Grupo de Neurofarmacología, Departamento de Ciencias Médicas, Area de Genética, Facultad de Medicina de Albacete, and Instituto de Investigación en Discapacidades Neurológicas, Universidad de Castilla-La Mancha, Albacete, Spain; and Departamento Estadística, I. O. y Computación, Universidad de La Laguna, La Laguna, Canarias, Spain
| | - Carmen Belén Álvarez-Simón
- *Laboratorio de Células Madre, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha, Albacete, Spain; Unidad Funcional de Investigación en Enfermedades Crónicas, Instituto de Salud Carlos III, Madrid, Spain; Grupo de Neurofarmacología, Departamento de Ciencias Médicas, Area de Genética, Facultad de Medicina de Albacete, and Instituto de Investigación en Discapacidades Neurológicas, Universidad de Castilla-La Mancha, Albacete, Spain; and Departamento Estadística, I. O. y Computación, Universidad de La Laguna, La Laguna, Canarias, Spain
| | - Francisco Sánchez-Sánchez
- *Laboratorio de Células Madre, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha, Albacete, Spain; Unidad Funcional de Investigación en Enfermedades Crónicas, Instituto de Salud Carlos III, Madrid, Spain; Grupo de Neurofarmacología, Departamento de Ciencias Médicas, Area de Genética, Facultad de Medicina de Albacete, and Instituto de Investigación en Discapacidades Neurológicas, Universidad de Castilla-La Mancha, Albacete, Spain; and Departamento Estadística, I. O. y Computación, Universidad de La Laguna, La Laguna, Canarias, Spain
| | - Juan Carlos Castillo Cano
- *Laboratorio de Células Madre, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha, Albacete, Spain; Unidad Funcional de Investigación en Enfermedades Crónicas, Instituto de Salud Carlos III, Madrid, Spain; Grupo de Neurofarmacología, Departamento de Ciencias Médicas, Area de Genética, Facultad de Medicina de Albacete, and Instituto de Investigación en Discapacidades Neurológicas, Universidad de Castilla-La Mancha, Albacete, Spain; and Departamento Estadística, I. O. y Computación, Universidad de La Laguna, La Laguna, Canarias, Spain
| | - Francisco Almeida
- *Laboratorio de Células Madre, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha, Albacete, Spain; Unidad Funcional de Investigación en Enfermedades Crónicas, Instituto de Salud Carlos III, Madrid, Spain; Grupo de Neurofarmacología, Departamento de Ciencias Médicas, Area de Genética, Facultad de Medicina de Albacete, and Instituto de Investigación en Discapacidades Neurológicas, Universidad de Castilla-La Mancha, Albacete, Spain; and Departamento Estadística, I. O. y Computación, Universidad de La Laguna, La Laguna, Canarias, Spain
| | - Vicente Blanco
- *Laboratorio de Células Madre, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha, Albacete, Spain; Unidad Funcional de Investigación en Enfermedades Crónicas, Instituto de Salud Carlos III, Madrid, Spain; Grupo de Neurofarmacología, Departamento de Ciencias Médicas, Area de Genética, Facultad de Medicina de Albacete, and Instituto de Investigación en Discapacidades Neurológicas, Universidad de Castilla-La Mancha, Albacete, Spain; and Departamento Estadística, I. O. y Computación, Universidad de La Laguna, La Laguna, Canarias, Spain
| | - Joaquín Jordán
- *Laboratorio de Células Madre, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha, Albacete, Spain; Unidad Funcional de Investigación en Enfermedades Crónicas, Instituto de Salud Carlos III, Madrid, Spain; Grupo de Neurofarmacología, Departamento de Ciencias Médicas, Area de Genética, Facultad de Medicina de Albacete, and Instituto de Investigación en Discapacidades Neurológicas, Universidad de Castilla-La Mancha, Albacete, Spain; and Departamento Estadística, I. O. y Computación, Universidad de La Laguna, La Laguna, Canarias, Spain
| | - Helena Mira
- *Laboratorio de Células Madre, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha, Albacete, Spain; Unidad Funcional de Investigación en Enfermedades Crónicas, Instituto de Salud Carlos III, Madrid, Spain; Grupo de Neurofarmacología, Departamento de Ciencias Médicas, Area de Genética, Facultad de Medicina de Albacete, and Instituto de Investigación en Discapacidades Neurológicas, Universidad de Castilla-La Mancha, Albacete, Spain; and Departamento Estadística, I. O. y Computación, Universidad de La Laguna, La Laguna, Canarias, Spain
| | - Carmen Ramírez-Castillejo
- *Laboratorio de Células Madre, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha, Albacete, Spain; Unidad Funcional de Investigación en Enfermedades Crónicas, Instituto de Salud Carlos III, Madrid, Spain; Grupo de Neurofarmacología, Departamento de Ciencias Médicas, Area de Genética, Facultad de Medicina de Albacete, and Instituto de Investigación en Discapacidades Neurológicas, Universidad de Castilla-La Mancha, Albacete, Spain; and Departamento Estadística, I. O. y Computación, Universidad de La Laguna, La Laguna, Canarias, Spain
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Bayod S, Felice P, Andrés P, Rosa P, Camins A, Pallàs M, Canudas AM. Downregulation of canonical Wnt signaling in hippocampus of SAMP8 mice. Neurobiol Aging 2014; 36:720-9. [PMID: 25443287 DOI: 10.1016/j.neurobiolaging.2014.09.017] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 09/14/2014] [Accepted: 09/17/2014] [Indexed: 01/09/2023]
Abstract
In the adult brain, canonical Wnt (Wnt/β-catenin) signaling modulates neuronal function, hippocampal neurogenesis, and synaptic plasticity. Indeed, growing evidence suggests that downregulation of Wnt signaling could be involved in the cognitive decline associated with aging and also with the physiopathology of Alzheimer's disease (AD). However, the molecular basis remains unknown. At present, SAMP8 is an experimental model that has been proposed for studying age-related neurodegenerative changes associated with aging and the pathogenesis of AD. Here, we examined Wnt signaling in the hippocampus of SAMP8 mice at 9 and 12 months of age, as well as in its control-strain SAMR1 mice. Our results showed increased Dickkopf-1 protein levels in SAMP8 with age, in addition to GSK-3 α/β activation and hyperphosphorylated tau. Consequently, higher β-catenin phosphorylation at Ser(33,37) and Thr(41), which promotes its degradation, along with a decrease in active β-catenin (ABC) in the nucleus, were observed in SAMP8, mainly at the age of 12 months. Moreover, nuclear levels of Dvl3 were lower in 9- and 12-month-old SAMP8 mice. Related to these findings, SAMP8 showed an increase in neuronal loss in the hippocampus that was associated with lower protein levels of the antiapoptotic protein and the Wnt target gene, Bcl-2, in addition to an increase in the proapototic protein Bax. Our results suggest a relationship between age-related downregulation of canonical Wnt signaling and neuronal loss observed in the hippocampus of SAMP8 mice. Thus, enhancing Wnt signaling may represent a novel neuroprotective strategy aimed at counteracting the cognitive decline that is associated not only with aging but also with AD.
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Affiliation(s)
- Sergi Bayod
- Unitat de Farmacologia i Farmacognòsia, Facultat de Farmàcia, Institut de Biomedicina (IBUB), Universitat de Barcelona, Nucli Universitari de Pedralbes, Barcelona, Spain; Centros de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Paolo Felice
- Unitat de Farmacologia i Farmacognòsia, Facultat de Farmàcia, Institut de Biomedicina (IBUB), Universitat de Barcelona, Nucli Universitari de Pedralbes, Barcelona, Spain; Centros de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Pol Andrés
- Unitat de Farmacologia i Farmacognòsia, Facultat de Farmàcia, Institut de Biomedicina (IBUB), Universitat de Barcelona, Nucli Universitari de Pedralbes, Barcelona, Spain; Centros de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Paolo Rosa
- Unitat de Farmacologia i Farmacognòsia, Facultat de Farmàcia, Institut de Biomedicina (IBUB), Universitat de Barcelona, Nucli Universitari de Pedralbes, Barcelona, Spain; Centros de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Antoni Camins
- Unitat de Farmacologia i Farmacognòsia, Facultat de Farmàcia, Institut de Biomedicina (IBUB), Universitat de Barcelona, Nucli Universitari de Pedralbes, Barcelona, Spain; Centros de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Mercè Pallàs
- Unitat de Farmacologia i Farmacognòsia, Facultat de Farmàcia, Institut de Biomedicina (IBUB), Universitat de Barcelona, Nucli Universitari de Pedralbes, Barcelona, Spain; Centros de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Anna-Maria Canudas
- Unitat de Farmacologia i Farmacognòsia, Facultat de Farmàcia, Institut de Biomedicina (IBUB), Universitat de Barcelona, Nucli Universitari de Pedralbes, Barcelona, Spain; Centros de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain.
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Adeosun SO, Hou X, Zheng B, Stockmeier C, Ou X, Paul I, Mosley T, Weisgraber K, Wang JM. Cognitive deficits and disruption of neurogenesis in a mouse model of apolipoprotein E4 domain interaction. J Biol Chem 2013; 289:2946-59. [PMID: 24324264 DOI: 10.1074/jbc.m113.497909] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Apolipoprotein E4 (apoE4) allele is the major genetic risk factor for sporadic Alzheimer disease (AD) due to the higher prevalence and earlier onset of AD in apoE4 carriers. Accumulating data suggest that the interaction between the N- and the C-terminal domains in the protein may be the main pathologic feature of apoE4. To test this hypothesis, we used Arg-61 mice, a model of apoE4 domain interaction, by introducing the domain interaction feature of human apoE4 into native mouse apoE. We carried out hippocampus-dependent learning and memory tests and related cellular and molecular assays on 12- and 3-month-old Arg-61 and age-matched background C57BL/6J mice. Learning and memory task performance were impaired in Arg-61 mice at both old and young ages compared with C57BL/6J mice. Surprisingly, young Arg-61 mice had more mitotic doublecortin-positive cells in the subgranular zone; mRNA levels of brain-derived neurotrophic factor (BDNF) and TrkB were also higher in 3-month-old Arg-61 hippocampus compared with C57BL/6J mice. These early-age neurotrophic and neurogenic (proliferative) effects in the Arg-61 mouse may be an inadequate compensatory but eventually detrimental attempt by the system to "repair" itself. This is supported by the higher cleaved caspase-3 levels in the young animals that not only persisted, but increased in old age, and the lower levels of doublecortin at old age in the hippocampus of Arg-61 mice. These results are consistent with human apoE4-dependent cognitive and neuro-pathologic changes, supporting the principal role of domain interaction in the pathologic effect of apoE4. Domain interaction is, therefore, a viable therapeutic/prophylactic target for cognitive impairment and AD in apoE4 subjects.
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Aβ increases neural stem cell activity in senescence-accelerated SAMP8 mice. Neurobiol Aging 2013; 34:2623-38. [PMID: 23796660 DOI: 10.1016/j.neurobiolaging.2013.05.011] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Revised: 04/10/2013] [Accepted: 05/12/2013] [Indexed: 02/08/2023]
Abstract
Neurogenesis persists in the adult brain as a form of plasticity due to the existence of neural stem cells (NSCs). Alterations in neurogenesis have been found in transgenic Alzheimer's disease (AD) mouse models, but NSC activity and neurogenesis in sporadic AD models remains to be examined. We herein describe a remarkable increase in NSC proliferation in the forebrain of SAMP8, a non-transgenic mouse strain that recapitulates the transition from healthy aging to AD. The increase in proliferation is transient, precedes AD-like symptoms such as amyloid beta 1-42 [Aβ(1-42)] increase or gliosis, and is followed by a steep decline at later stages. Interestingly, in vitro studies indicate that secreted Aβ(1-42) and PI3K signaling may account for the early boost in NSC proliferation. Our results highlight the role of soluble Aβ(1-42) peptide and PI3K in the autocrine regulation of NSCs, and further suggest that over-proliferation of NSCs before the appearance of AD pathology may underlie neurogenic failure during the age-related progression of the disease. These findings have implications for therapeutic approaches based on neurogenesis in AD.
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Kitaoka K, Shimizu N, Ono K, Chikahisa S, Nakagomi M, Shudo K, Ishimura K, Séi H, Yoshizaki K. The retinoic acid receptor agonist Am80 increases hippocampal ADAM10 in aged SAMP8 mice. Neuropharmacology 2013; 72:58-65. [PMID: 23624141 DOI: 10.1016/j.neuropharm.2013.04.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2012] [Revised: 03/29/2013] [Accepted: 04/06/2013] [Indexed: 10/26/2022]
Abstract
The retinoic acid (RA, a vitamin A metabolite) receptor (RAR) is a transcription factor. Vitamin A/RA administration improves the Alzheimer's disease (AD)- and age-related attenuation of memory/learning in mouse models. Recently, a disintegrin and metalloproteinase domain-containing protein 10 (ADAM10) was identified as a key molecule in RA-mediated anti-AD mechanisms. We investigated the effect of chronic administration of the RAR agonist Am80 (tamibarotene) on ADAM10 expression in senescence-accelerated mice (SAMP8). Moreover, we estimated changes in the expression of the amyloid precursor protein (APP), amyloid beta (Aβ), and hairy/enhancer of split (Hes), which are mediated by ADAM10. Spatial working memory and the levels of a hippocampal proliferation marker (Ki67) were also assessed in these mice. ADAM10 mRNA and protein expression was significantly reduced in the hippocampus of 13-month-old SAMP8 mice; their expression improved significantly after Am80 administration. Further, after Am80 administration, the expression levels of Hes5 and Ki67 were restored and the deterioration of working memory was suppressed, whereas APP and Aβ levels remained unchanged. Our results suggest that Am80 administration effectively improves dementia by activating the hippocampal ADAM10-Notch-Hes5 proliferative pathway.
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Affiliation(s)
- Kazuyoshi Kitaoka
- Department of Physiology, Institute of Health Biosciences, The University of Tokushima Graduate School, 3-18-15, Kuramoto-cho, Tokushima 770-8503, Japan.
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26
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Shao H, Fan L, Xu XJ, Xu WQ, Liu BF, Wang JL, Liu NF, Zhao ST. Characterization of adult neurogenesis in lizardPhrynocephalus vlangalii(Agamidae: Reptilia). ACTA ACUST UNITED AC 2012. [DOI: 10.1080/11250003.2012.719933] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Lazarov O, Demars MP. All in the Family: How the APPs Regulate Neurogenesis. Front Neurosci 2012; 6:81. [PMID: 22675290 PMCID: PMC3366480 DOI: 10.3389/fnins.2012.00081] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2012] [Accepted: 05/14/2012] [Indexed: 12/23/2022] Open
Abstract
Recent intriguing evidence suggests that metabolites of amyloid precursor protein (APP), mutated in familial forms of Alzheimer’s disease (AD), play critical roles in developmental and postnatal neurogenesis. Of note is soluble APPα (sAPPα) that regulates neural progenitor cell proliferation. The APP family encompasses a group of ubiquitously expressed and evolutionarily conserved, type I transmembrane glycoproteins, whose functions have yet to be fully elucidated. APP can undergo proteolytic cleavage by mutually exclusive pathways. The subtle structural differences between metabolites generated in the different pathways, as well as their equilibrium, may be crucial for neuronal function. The implications of this new body of evidence are significant. Miscleavage of APP would readily impact developmental and postnatal neurogenesis, which might contribute to cognitive deficits characterizing Alzheimer’s disease. This review will discuss the implications of the role of the APP family in neurogenesis for neuronal development, cognitive function, and brain disorders that compromise learning and memory, such as AD.
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Affiliation(s)
- Orly Lazarov
- Department of Anatomy and Cell Biology, College of Medicine, The University of Illinois at Chicago Chicago, IL, USA
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Sabbagh JJ, Kinney JW, Cummings JL. Animal systems in the development of treatments for Alzheimer's disease: challenges, methods, and implications. Neurobiol Aging 2012; 34:169-83. [PMID: 22464953 DOI: 10.1016/j.neurobiolaging.2012.02.027] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2012] [Revised: 02/25/2012] [Accepted: 02/26/2012] [Indexed: 11/18/2022]
Abstract
Substantial resources and effort have been invested into the development of therapeutic agents for Alzheimer's disease (AD) with mixed and limited success. Research into the etiology of AD with animal models mimicking aspects of the disorder has substantially contributed to the advancement of potential therapies. Although these models have shown utility in testing novel therapeutic candidates, large variability still exists in terms of methodology and how the models are utilized. No model has yet predicted a successful disease-modifying therapy for AD. This report reviews several of the widely accepted transgenic and nontransgenic animal models of AD, highlighting the pathological and behavioral characteristics of each. Methodological considerations for conducting preclinical animal research are discussed, such as which behavioral tasks and histological markers may be associated with the greatest insight into therapeutic benefit. An overview of previous and current therapeutic interventions being investigated in AD models is presented, with an emphasis on factors that may have contributed to failure in past clinical trials. Finally, we propose a multitiered approach for investigating candidate therapies for AD that may reduce the likelihood of inappropriate conclusions from models and failed trials in humans.
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Affiliation(s)
- Jonathan J Sabbagh
- Behavioral Neuroscience Laboratory, University of Nevada, Las Vegas, NV, USA
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