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Cogut V, McNeely TL, Bussian TJ, Graves SI, Baker DJ. Caloric Restriction Improves Spatial Learning Deficits in Tau Mice. J Alzheimers Dis 2024; 98:925-940. [PMID: 38517786 PMCID: PMC11068089 DOI: 10.3233/jad-231117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/24/2024]
Abstract
Background Caloric restriction (CR) has been recognized for its benefits in delaying age-related diseases and extending lifespan. While its effects on amyloid pathology in Alzheimer's disease (AD) mouse models are well-documented, its effects on tauopathy, another hallmark of AD, are less explored. Objective To assess the impact of a short-term 30% CR regimen on age-dependent spatial learning deficits and pathological features in a tauopathy mouse model. Methods We subjected male PS19 tau P301S (hereafter PS19) and age-matched wildtype mice from two age cohorts (4.5 and 7.5 months old) to a 6-week 30% CR regimen. Spatial learning performance was assessed using the Barnes Maze test. Tau pathology, neuroinflammation, hippocampal cell proliferation, and neurogenesis were evaluated in the older cohort by immunohistochemical staining and RT-qPCR. Results CR mitigated age-dependent spatial learning deficits in PS19 mice but exhibited limited effects on tau pathology and the associated neuroinflammation. Additionally, we found a decrease in hippocampal cell proliferation, predominantly of Iba1+ cells. Conclusions Our findings reinforce the cognitive benefits conferred by CR despite its limited modulation of disease pathology. Given the pivotal role of microglia in tau-driven pathology, the observed reduction in Iba1+ cells under CR suggests potential therapeutic implications, particularly if CR would be introduced early in disease progression.
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Affiliation(s)
- Valeria Cogut
- Department of Biochemistry and Molecular Biology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
| | - Taylor L. McNeely
- Department of Biochemistry and Molecular Biology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
| | - Tyler J. Bussian
- Department of Biochemistry and Molecular Biology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
| | - Sara I. Graves
- Department of Pediatric and Adolescent Medicine, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
| | - Darren J. Baker
- Department of Biochemistry and Molecular Biology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
- Department of Pediatric and Adolescent Medicine, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
- Paul F. Glenn Center for Biology of Aging Research at Mayo Clinic, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
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De Marchi F, Vignaroli F, Mazzini L, Comi C, Tondo G. New Insights into the Relationship between Nutrition and Neuroinflammation in Alzheimer's Disease: Preventive and Therapeutic Perspectives. CNS Neurol Disord Drug Targets 2024; 23:614-627. [PMID: 37291780 DOI: 10.2174/1871527322666230608110201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 04/16/2023] [Accepted: 05/08/2023] [Indexed: 06/10/2023]
Abstract
Neurodegenerative diseases are progressive brain disorders characterized by inexorable synaptic dysfunction and neuronal loss. Since the most consistent risk factor for developing neurodegenerative diseases is aging, the prevalence of these disorders is intended to increase with increasing life expectancy. Alzheimer's disease is the most common cause of neurodegenerative dementia, representing a significant medical, social, and economic burden worldwide. Despite growing research to reach an early diagnosis and optimal patient management, no disease-modifying therapies are currently available. Chronic neuroinflammation has been recognized as a crucial player in sustaining neurodegenerative processes, along with pathological deposition of misfolded proteins, including amyloid-β and tau protein. Modulating neuroinflammatory responses may be a promising therapeutic strategy in future clinical trials. Among factors that are able to regulate neuroinflammatory mechanisms, diet, and nutrients represent easily accessible and modifiable lifestyle components. Mediterranean diet and several nutrients, including polyphenols, vitamins, and omega-3 polyunsaturated fatty acids, can exert antioxidant and anti-inflammatory properties, impacting clinical manifestations, cognitive decline, and dementia. This review aims to provide an updated overview of the relationship between neuroinflammation, nutrition, gut microbiota, and neurodegeneration. We summarize the major studies exploring the effects of diet regimes on cognitive decline, primarily focusing on Alzheimer's disease dementia and the impact of these results on the design of ongoing clinical trials.
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Affiliation(s)
- Fabiola De Marchi
- ALS Center, Neurology Unit, Department of Translational Medicine, University of Piemonte Orientale, 28100, Novara, Italy
| | - Francesca Vignaroli
- Neurology Unit, Department of Translational Medicine, University of Piemonte Orientale, 28100, Novara, Italy
| | - Letizia Mazzini
- ALS Center, Neurology Unit, Department of Translational Medicine, University of Piemonte Orientale, 28100, Novara, Italy
| | - Cristoforo Comi
- Neurology Unit, Department of Translational Medicine, S. Andrea Hospital, University of Piemonte Orientale, 13100, Vercelli, Italy
| | - Giacomo Tondo
- Neurology Unit, Department of Translational Medicine, S. Andrea Hospital, University of Piemonte Orientale, 13100, Vercelli, Italy
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Van Dam D, Valkenburg F, Van Kolen K, Pintelon I, Timmermans JP, De Deyn PP. Behavioral and Neuropathological Phenotyping of the Tau58/2 and Tau58/4 Transgenic Mouse Models for FTDP-17. Life (Basel) 2023; 13:2088. [PMID: 37895469 PMCID: PMC10608666 DOI: 10.3390/life13102088] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 10/10/2023] [Accepted: 10/16/2023] [Indexed: 10/29/2023] Open
Abstract
BACKGROUND The Tau58/2 and Tau58/4 mouse lines expressing 0N4R tau with a P301S mutation mimic aspects of frontotemporal dementia and parkinsonism linked to chromosome 17 (FTDP-17). In a side-by-side comparison, we report the age-dependent development of cognitive, motor, and behavioral deficits in comparison with the spatial-temporal evolution of cellular tau pathology in both models. METHODS We applied the SHIRPA primary screen and specific neuromotor, behavioral, and cognitive paradigms. The spatiotemporal development of tau pathology was investigated immunohistochemically. Levels of sarkosyl-insoluble paired helical filaments were determined via a MesoScale Discovery biomarker assay. RESULTS Neuromotor impairments developed from age 3 months in both models. On electron microscopy, spinal cord neurofibrillary pathology was visible in mice aged 3 months; however, AT8 immunoreactivity was not yet observed in Tau58/4 mice. Behavioral abnormalities and memory deficits occurred at a later stage (>9 months) when tau pathology was fully disseminated throughout the brain. Spatiotemporally, tau pathology spread from the spinal cord via the midbrain to the frontal cortex, while the hippocampus was relatively spared, thus explaining the late onset of cognitive deficits. CONCLUSIONS Our findings indicate the face and construct validity of both Tau58 models, which may provide new, valuable insights into the pathologic effects of tau species in vivo and may consequently facilitate the development of new therapeutic targets to delay or halt neurodegenerative processes occurring in tauopathies.
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Affiliation(s)
- Debby Van Dam
- Laboratory of Neurochemistry and Behavior, Experimental Neurobiology Unit, University of Antwerp, Wilrijk, 2610 Antwerp, Belgium;
- Department of Neurology and Alzheimer Center Groningen, University Medical Center Groningen, University of Groningen, 9713 GZ Groningen, The Netherlands
| | - Femke Valkenburg
- Laboratory of Neurochemistry and Behavior, Experimental Neurobiology Unit, University of Antwerp, Wilrijk, 2610 Antwerp, Belgium;
| | - Kristof Van Kolen
- Neuroscience Department, Janssen Research and Development, 2340 Beerse, Belgium;
| | - Isabel Pintelon
- Laboratory of Cell Biology and Histology, Department of Veterinary Sciences, University of Antwerp, 2610 Antwerp, Belgium; (I.P.); (J.-P.T.)
| | - Jean-Pierre Timmermans
- Laboratory of Cell Biology and Histology, Department of Veterinary Sciences, University of Antwerp, 2610 Antwerp, Belgium; (I.P.); (J.-P.T.)
| | - Peter Paul De Deyn
- Laboratory of Neurochemistry and Behavior, Experimental Neurobiology Unit, University of Antwerp, Wilrijk, 2610 Antwerp, Belgium;
- Department of Neurology and Alzheimer Center Groningen, University Medical Center Groningen, University of Groningen, 9713 GZ Groningen, The Netherlands
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Portero-Tresserra M, Galofré-López N, Pallares E, Gimenez-Montes C, Barcia C, Granero R, Rojic-Becker D, Vale-Martínez A, Martí-Nicolovius M, Guillazo-Blanch G. Effects of Caloric Restriction on Spatial Object Recognition Memory, Hippocampal Neuron Loss and Neuroinflammation in Aged Rats. Nutrients 2023; 15:nu15071572. [PMID: 37049417 PMCID: PMC10096994 DOI: 10.3390/nu15071572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/21/2023] [Accepted: 03/22/2023] [Indexed: 04/14/2023] Open
Abstract
Age-related neurobiological changes significantly affect hippocampal structure and function, such that the main cognitive impairments associated with aging are related to the integrity of this brain structure, including the deterioration in spatial object recognition (SOR) memory. Previous studies have shown that intrinsic factors such as neuroinflammation, as well as lifestyle factors such as diet, can affect aging-associated brain functions and cognitive performance. In this regard, caloric restriction (CR) produces beneficial effects on health and life expectancy, although its ability to slow down age-dependent effects on cognitive decline and hippocampus (HPC) functioning remains unclear. Therefore, we set out to evaluate the effects of CR on SOR memory in aged male Wistar rats, as well as those on hippocampal neuron loss, neurogenesis and inflammation. The data show that CR in aged rats attenuates the decline in SOR memory, age-associated hippocampal neuron loss, and age-dependent microglial activation. Furthermore, we found a significant reduction in neurogenesis in the dentate gyrus of the old animals relative to adult rats. These findings support the positive effect of CR on SOR memory, suggesting that it dampens hippocampal neuronal loss and reduces proinflammatory activity.
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Affiliation(s)
- Marta Portero-Tresserra
- Departament de Psicobiologia i Metodologia de les Ciències de la Salut, Institut de Neurociències, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain
| | - Neus Galofré-López
- Departament de Psicobiologia i Metodologia de les Ciències de la Salut, Institut de Neurociències, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain
| | - Elisabet Pallares
- Departament de Psicobiologia i Metodologia de les Ciències de la Salut, Institut de Neurociències, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain
| | - Claudia Gimenez-Montes
- Departament de Psicobiologia i Metodologia de les Ciències de la Salut, Institut de Neurociències, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain
| | - Carlos Barcia
- Departament de Bioquímica i Biologia Molecular, Institut de Neurociències, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain
| | - Roser Granero
- Departament de Psicobiologia i Metodologia de les Ciències de la Salut, Institut de Neurociències, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain
- Ciber Fisiopatología Obesidad y Nutrición (CIBERObn), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Psychoneurobiology of Eating and Addictive Behaviors Group, Neurosciences Programme, Bellvitge Institute for Biomedical Research (IDIBELL), 08908 Barcelona, Spain
| | - Divka Rojic-Becker
- Departament de Psicobiologia i Metodologia de les Ciències de la Salut, Institut de Neurociències, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain
| | - Anna Vale-Martínez
- Departament de Psicobiologia i Metodologia de les Ciències de la Salut, Institut de Neurociències, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain
| | - Margarita Martí-Nicolovius
- Departament de Psicobiologia i Metodologia de les Ciències de la Salut, Institut de Neurociències, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain
| | - Gemma Guillazo-Blanch
- Departament de Psicobiologia i Metodologia de les Ciències de la Salut, Institut de Neurociències, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain
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5
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Tabeshmehr P, Eftekharpour E. Tau; One Protein, So Many Diseases. Biology (Basel) 2023; 12. [PMID: 36829521 DOI: 10.3390/biology12020244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 01/30/2023] [Accepted: 01/31/2023] [Indexed: 02/08/2023]
Abstract
Tau, a member of the microtubule-associated proteins, is a known component of the neuronal cytoskeleton; however, in the brain tissue, it is involved in other vital functions beyond maintaining the cellular architecture. The pathologic tau forms aggregates inside the neurons and ultimately forms the neurofibrillary tangles. Intracellular and extracellular accumulation of different tau isoforms, including dimers, oligomers, paired helical filaments and tangles, lead to a highly heterogenous group of diseases named "Tauopathies". About twenty-six different types of tauopathy diseases have been identified that have different clinical phenotypes or pathophysiological characteristics. Although all these diseases are identified by tau aggregation, they are distinguishable based on the specific tau isoforms, the affected cell types and the brain regions. The neuropathological and phenotypical heterogeneity of these diseases impose significant challenges for discovering new diagnostic and therapeutic strategies. Here, we review the recent literature on tau protein and the pathophysiological mechanisms of tauopathies. This article mainly focuses on physiologic and pathologic tau and aims to summarize the upstream and downstream events and discuss the current diagnostic approaches and therapeutic strategies.
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Lobo F, Haase J, Brandhorst S. The Effects of Dietary Interventions on Brain Aging and Neurological Diseases. Nutrients 2022; 14. [PMID: 36501116 DOI: 10.3390/nu14235086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 11/17/2022] [Accepted: 11/23/2022] [Indexed: 12/02/2022] Open
Abstract
Dietary interventions can ameliorate age-related neurological decline. Decades of research of in vitro studies, animal models, and clinical trials support their ability and efficacy to improve behavioral outcomes by inducing biochemical and physiological changes that lead to a more resilient brain. Dietary interventions including calorie restriction, alternate day fasting, time restricted feeding, and fasting mimicking diets not only improve normal brain aging but also slow down, or even reverse, the progression of neurological diseases. In this review, we focus on the effects of intermittent and periodic fasting on improving phenotypic outcomes, such as cognitive and motor-coordination decline, in the normal aging brain through an increase in neurogenesis and synaptic plasticity, and decrease in neuroinflammation, mitochondrial dysfunction, and oxidative stress. We summarize the results of various dietary interventions in animal models of age-related neurological diseases such as Alzheimer's disease, Parkinson's disease, epilepsy, and Multiple Sclerosis and discuss the results of clinical trials that explore the feasibility of dietary interventions in the prevention and treatment of these diseases.
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7
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Culig L, Sahbaz BD, Bohr VA. Effects of lifespan-extending interventions on cognitive healthspan. Expert Rev Mol Med 2022; 25:e2. [PMID: 36377361 DOI: 10.1017/erm.2022.36] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Ageing is known to be the primary risk factor for most neurodegenerative diseases, including Alzheimer's disease, Parkinson's disease and Huntington's disease. They are currently incurable and worsen over time, which has broad implications in the context of lifespan and healthspan extension. Adding years to life and even to physical health is suboptimal or even insufficient, if cognitive ageing is not adequately improved. In this review, we will examine how interventions that have the potential to extend lifespan in animals affect the brain, and if they would be able to thwart or delay the development of cognitive dysfunction and/or neurodegeneration. These interventions range from lifestyle (caloric restriction, physical exercise and environmental enrichment) through pharmacological (nicotinamide adenine dinucleotide precursors, resveratrol, rapamycin, metformin, spermidine and senolytics) to epigenetic reprogramming. We argue that while many of these interventions have clear potential to improve cognitive health and resilience, large-scale and long-term randomised controlled trials are needed, along with studies utilising washout periods to determine the effects of supplementation cessation, particularly in aged individuals.
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Delventhal R, Wooder ER, Basturk M, Sattar M, Lai J, Bolton D, Muthukumar G, Ulgherait M, Shirasu-Hiza MM. Dietary restriction ameliorates TBI-induced phenotypes in Drosophila melanogaster. Sci Rep 2022; 12:9523. [PMID: 35681073 PMCID: PMC9184478 DOI: 10.1038/s41598-022-13128-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 05/20/2022] [Indexed: 11/25/2022] Open
Abstract
Traumatic brain injury (TBI) affects millions annually and is associated with long-term health decline. TBI also shares molecular and cellular hallmarks with neurodegenerative diseases (NDs), typically increasing in prevalence with age, and is a major risk factor for developing neurodegeneration later in life. While our understanding of genes and pathways that underlie neurotoxicity in specific NDs has advanced, we still lack a complete understanding of early molecular and physiological changes that drive neurodegeneration, particularly as an individual ages following a TBI. Recently Drosophila has been introduced as a model organism for studying closed-head TBI. In this paper, we deliver a TBI to flies early in adult life, and then measure molecular and physiological phenotypes at short-, mid-, and long-term timepoints following the injury. We aim to identify the timing of changes that contribute to neurodegeneration. Here we confirm prior work demonstrating a TBI-induced decline in lifespan, and present evidence of a progressive decline in locomotor function, robust acute and modest chronic neuroinflammation, and a late-onset increase in protein aggregation. We also present evidence of metabolic dysfunction, in the form of starvation sensitivity and decreased lipids, that persists beyond the immediate injury response, but does not differ long-term. An intervention of dietary restriction (DR) partially ameliorates some TBI-induced phenotypes, including lifespan and locomotor function, though it does not alter the pattern of starvation sensitivity of injured flies. In the future, molecular pathways identified as altered following TBI—particularly in the short-, or mid-term—could present potential therapeutic targets.
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Affiliation(s)
- Rebecca Delventhal
- Department of Biology, Lake Forest College, Lake Forest, IL, 60045, USA.
| | - Emily R Wooder
- Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY, 10032, USA
| | - Maylis Basturk
- Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY, 10032, USA
| | - Mohima Sattar
- Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY, 10032, USA
| | - Jonathan Lai
- Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY, 10032, USA
| | - Danielle Bolton
- Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY, 10032, USA
| | - Gayathri Muthukumar
- Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY, 10032, USA
| | - Matthew Ulgherait
- Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY, 10032, USA
| | - Mimi M Shirasu-Hiza
- Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY, 10032, USA.
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Chu CQ, Yu LL, Qi GY, Mi YS, Wu WQ, Lee YK, Zhai QX, Tian FW, Chen W. Can dietary patterns prevent cognitive impairment and reduce Alzheimer's disease risk: exploring the underlying mechanisms of effects. Neurosci Biobehav Rev 2022;:104556. [PMID: 35122783 DOI: 10.1016/j.neubiorev.2022.104556] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 01/29/2022] [Accepted: 01/30/2022] [Indexed: 02/07/2023]
Abstract
Alzheimer's disease (AD) is one of the fastest growing cognitive decline-related neurological diseases. To date, effective curative strategies have remained elusive. A growing body of evidence indicates that dietary patterns have significant effects on cognitive function and the risk of developing AD. Previous studies on the association between diet and AD risk have mainly focused on individual food components and specific nutrients, and the mechanisms responsible for the beneficial effects of dietary patterns on AD are not well understood. This article provides a comprehensive overview of the effects of dietary patterns, including the Mediterranean diet (MedDiet), dietary approaches to stop hypertension (DASH) diet, Mediterranean-DASH diet intervention for neurological delay (MIND), ketogenic diet, caloric restriction, intermittent fasting, methionine restriction, and low-protein and high-carbohydrate diet, on cognitive impairment and summarizes the underlying mechanisms by which dietary patterns attenuate cognitive impairment, especially highlighting the modulation of dietary patterns on cognitive impairment through gut microbiota. Furthermore, considering the variability in individual metabolic responses to dietary intake, we put forward a framework to develop personalized dietary patterns for people with cognitive disorders or AD based on individual gut microbiome compositions.
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Loon A, Zamudio F, Sanneh A, Brown B, Smeltzer S, Brownlow ML, Quadri Z, Peters M, Weeber E, Nash K, Lee DC, Gordon MN, Morgan D, Selenica MLB. Accumulation of C-terminal cleaved tau is distinctly associated with cognitive deficits, synaptic plasticity impairment, and neurodegeneration in aged mice. GeroScience 2022; 44:173-194. [PMID: 34410588 PMCID: PMC8810980 DOI: 10.1007/s11357-021-00408-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 06/18/2021] [Indexed: 01/08/2023] Open
Abstract
C-terminal cleaved tau at D421 (∆D421-tau) accumulates in the brains of Alzheimer's disease (AD) patients. However, it is unclear how tau truncation, an understudied tau post-translational modification, contributes to AD pathology and progression. Utilizing an adeno-associated virus (AAV) gene delivery-based approach, we overexpressed full-length tau (FL-tau) and ∆D421-tau in 4- and 12-month-old mice for 4 months to study the neuropathological impact of accumulation in young adult (8-month) and middle-aged (16-month) mice. Overall, we show that independent of the tau species, age was an important factor facilitating tau phosphorylation, oligomer formation, and deposition into silver-positive tangles. However, mice overexpressing ∆D421-tau exhibited a distinct phosphorylation profile to those overexpressing FL-tau and increased tau oligomerization in the middle-age group. Importantly, overexpression of ∆D421-tau, but not FL-tau in middle-aged mice, resulted in pronounced cognitive impairments and hippocampal long-term potentiation deficits. While both FL-tau and ∆D421-tau induced neuronal loss in mice with age, ∆D421-tau led to significant neuronal loss in the CA3 area of the hippocampus and medial entorhinal cortex compared to FL-tau. Based on our data, we conclude that age increases the susceptibility to neuronal degeneration associated with ΔD421-tau accumulation. Our findings suggest that ΔD421-tau accumulation contributes to synaptic plasticity and cognitive deficits, thus representing a potential target for tau-associated pathologies.
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Affiliation(s)
- Anjanet Loon
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd, Tampa, FL 33612 USA
| | - Frank Zamudio
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd, Tampa, FL 33612 USA
| | - Awa Sanneh
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd, Tampa, FL 33612 USA
| | - Breanna Brown
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd, Tampa, FL 33612 USA
| | - Shayna Smeltzer
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd, Tampa, FL 33612 USA
| | - Milene L. Brownlow
- Department of Molecular Pharmacological & Physiology, Morsani College of Medicine, University of South Florida, 12901 Bruce B. Downs Blvd, Tampa, FL 33612 USA
| | - Zainuddin Quadri
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd, Tampa, FL 33612 USA
- Sanders-Brown Center On Aging (SBCoA), College of Medicine, University of Kentucky, Lexington, KY USA
| | - Melinda Peters
- Department of Molecular Pharmacological & Physiology, Morsani College of Medicine, University of South Florida, 12901 Bruce B. Downs Blvd, Tampa, FL 33612 USA
| | - Edwin Weeber
- Department of Molecular Pharmacological & Physiology, Morsani College of Medicine, University of South Florida, 12901 Bruce B. Downs Blvd, Tampa, FL 33612 USA
| | - Kevin Nash
- Department of Molecular Pharmacological & Physiology, Morsani College of Medicine, University of South Florida, 12901 Bruce B. Downs Blvd, Tampa, FL 33612 USA
| | - Daniel C. Lee
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd, Tampa, FL 33612 USA
- Sanders-Brown Center On Aging (SBCoA), College of Medicine, University of Kentucky, Lexington, KY USA
| | - Marcia N. Gordon
- Department of Molecular Pharmacological & Physiology, Morsani College of Medicine, University of South Florida, 12901 Bruce B. Downs Blvd, Tampa, FL 33612 USA
- Translational Neuroscience, College of Human Medicine, Michigan State University, Grand Rapids, MI 49503 USA
| | - Dave Morgan
- Department of Molecular Pharmacological & Physiology, Morsani College of Medicine, University of South Florida, 12901 Bruce B. Downs Blvd, Tampa, FL 33612 USA
- Translational Neuroscience, College of Human Medicine, Michigan State University, Grand Rapids, MI 49503 USA
| | - Maj-Linda B. Selenica
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd, Tampa, FL 33612 USA
- Sanders-Brown Center On Aging (SBCoA), College of Medicine, University of Kentucky, Lexington, KY USA
- Department of Molecular and Cellular Biochemistry, College of Medicine, University of Kentucky, 800 S. Limestone St, Lexington, KY 40536 USA
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Prvulovic MR, Milanovic DJ, Vujovic PZ, Jovic MS, Kanazir SD, Todorovic ST, Mladenovic AN. Late-Onset Calorie Restriction Worsens Cognitive Performances and Increases Frailty Level in Female Wistar Rats. J Gerontol A Biol Sci Med Sci 2021; 77:947-955. [PMID: 34957511 DOI: 10.1093/gerona/glab353] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Indexed: 12/19/2022] Open
Abstract
The current study aims to determine the potential benefits of calorie restriction (CR), one of the most promising paradigms for life span and healthspan extension, on cognitive performances in female Wistar rats during aging. As a measure of a healthspan, we evaluated the effects of different onset and duration of CR on frailty level. Female Wistar rats were exposed to either ad libitum (AL) or CR (60% of AL daily intake) food intake during aging. Two different CR protocols were used, life-long CR with an early-onset that started at the adult stage (6 months) and 3-month-long CR, started at the middle (15 months) and late-middle (21 months) age, thus defined as a late-onset CR. The effects of CR were evaluated using open-field, Y-maze, and novel object recognition tests. We broadened 2 tools for frailty assessment currently in use for experimental animals, and in alignment with our previous study, we created a physical-cognitive frailty tool that combines both physical and cognitive performances. Our results clearly showed that CR effects are highly dependent on CR duration and onset. While a life-long restriction with an early-onset has been proven as protective and beneficial, short-term restriction introduced at late age significantly worsens an animal's behavior and frailty. These results complement our previous study conducted in males and contribute to the understanding of sex differences in a response to CR during aging.
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Affiliation(s)
- Milica R Prvulovic
- Department for Neurobiology, Institute for Biological Research "Siniša Stanković", National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Desanka J Milanovic
- Department for Neurobiology, Institute for Biological Research "Siniša Stanković", National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Predrag Z Vujovic
- Department for Comparative Physiology and Ecophysiology, Institute for Physiology and Biochemistry "Ivan Đaja", Faculty of Biology, University of Belgrade, Belgrade, Serbia
| | - Milena S Jovic
- Department for Neurobiology, Institute for Biological Research "Siniša Stanković", National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Selma D Kanazir
- Department for Neurobiology, Institute for Biological Research "Siniša Stanković", National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Smilja T Todorovic
- Department for Neurobiology, Institute for Biological Research "Siniša Stanković", National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Aleksandra N Mladenovic
- Department for Neurobiology, Institute for Biological Research "Siniša Stanković", National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
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12
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Wilson KA, Chamoli M, Hilsabeck TA, Pandey M, Bansal S, Chawla G, Kapahi P. Evaluating the beneficial effects of dietary restrictions: A framework for precision nutrigeroscience. Cell Metab 2021; 33:2142-73. [PMID: 34555343 DOI: 10.1016/j.cmet.2021.08.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 08/17/2021] [Accepted: 08/30/2021] [Indexed: 12/12/2022]
Abstract
Dietary restriction (DR) has long been viewed as the most robust nongenetic means to extend lifespan and healthspan. Many aging-associated mechanisms are nutrient responsive, but despite the ubiquitous functions of these pathways, the benefits of DR often vary among individuals and even among tissues within an individual, challenging the aging research field. Furthermore, it is often assumed that lifespan interventions like DR will also extend healthspan, which is thus often ignored in aging studies. In this review, we provide an overview of DR as an intervention and discuss the mechanisms by which it affects lifespan and various healthspan measures. We also review studies that demonstrate exceptions to the standing paradigm of DR being beneficial, thus raising new questions that future studies must address. We detail critical factors for the proposed field of precision nutrigeroscience, which would utilize individualized treatments and predict outcomes using biomarkers based on genotype, sex, tissue, and age.
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13
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Abstract
The brain is the most energy-consuming organ of the body and impairments in brain energy metabolism will affect neuronal functionality and viability. Brain aging is marked by defects in energetic metabolism. Abnormal tau protein is a hallmark of tauopathies, including Alzheimer's disease (AD). Pathological tau was shown to induce bioenergetic impairments by affecting mitochondrial function. Although it is now clear that mutations in the tau-coding gene lead to tau pathology, the causes of abnormal tau phosphorylation and aggregation in non-familial tauopathies, such as sporadic AD, remain elusive. Strikingly, both tau pathology and brain hypometabolism correlate with cognitive impairments in AD. The aim of this review is to discuss the link between age-related decrease in brain metabolism and tau pathology. In particular, the following points will be discussed: (i) the common bioenergetic features observed during brain aging and tauopathies; (ii) how age-related bioenergetic defects affect tau pathology; (iii) the influence of lifestyle factors known to modulate brain bioenergetics on tau pathology. The findings compiled here suggest that age-related bioenergetic defects may trigger abnormal tau phosphorylation/aggregation and cognitive impairments after passing a pathological threshold. Understanding the effects of aging on brain metabolism may therefore help to identify disease-modifying strategies against tau-induced neurodegeneration.
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Affiliation(s)
- Amandine Grimm
- Transfaculty Research Platform Molecular and Cognitive Neuroscience, University of Basel, 4002 Basel, Switzerland;
- Neurobiology Lab for Brain Aging and Mental Health, Psychiatric University Clinics, 4002 Basel, Switzerland
- Life Sciences Training Facility, University of Basel, 4055 Basel, Switzerland
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14
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Fontana L, Ghezzi L, Cross AH, Piccio L. Effects of dietary restriction on neuroinflammation in neurodegenerative diseases. J Exp Med 2021; 218:211666. [PMID: 33416892 PMCID: PMC7802371 DOI: 10.1084/jem.20190086] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 09/29/2020] [Accepted: 11/30/2020] [Indexed: 12/11/2022] Open
Abstract
Recent and accumulating work in experimental animal models and humans shows that diet has a much more pervasive and prominent role than previously thought in modulating neuroinflammatory and neurodegenerative mechanisms leading to some of the most common chronic central nervous system (CNS) diseases. Chronic or intermittent food restriction has profound effects in shaping brain and peripheral metabolism, immunity, and gut microbiome biology. Interactions among calorie intake, meal frequency, diet quality, and the gut microbiome modulate specific metabolic and molecular pathways that regulate cellular, tissue, and organ homeostasis as well as inflammation during normal brain aging and CNS neurodegenerative diseases, including Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis, and multiple sclerosis, among others. This review discusses these findings and their potential application to the prevention and treatment of CNS neuroinflammatory diseases and the promotion of healthy brain aging.
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Affiliation(s)
- Luigi Fontana
- Charles Perkins Center, Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia.,Department of Endocrinology, Royal Prince Alfred Hospital, Sydney, Australia.,Department of Clinical and Experimental Sciences, Brescia University, Brescia, Italy
| | - Laura Ghezzi
- Department of Neurology, Washington University in St. Louis, St. Louis, MO.,University of Milan, Milan, Italy
| | - Anne H Cross
- Department of Neurology, Washington University in St. Louis, St. Louis, MO
| | - Laura Piccio
- Department of Neurology, Washington University in St. Louis, St. Louis, MO.,Brain and Mind Centre, School of Medical Sciences, University of Sydney, Sydney, New South Wales, Australia
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15
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Wang J, Napoli E, Kim K, McLennan YA, Hagerman RJ, Giulivi C. Brain Atrophy and White Matter Damage Linked to Peripheral Bioenergetic Deficits in the Neurodegenerative Disease FXTAS. Int J Mol Sci 2021; 22:9171. [PMID: 34502080 PMCID: PMC8431233 DOI: 10.3390/ijms22179171] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 08/16/2021] [Accepted: 08/23/2021] [Indexed: 11/16/2022] Open
Abstract
Fragile X-associated tremor/ataxia syndrome (FXTAS) is a neurodegenerative disorder affecting subjects (premutation carriers) with a 55-200 CGG-trinucleotide expansion in the 5'UTR of the fragile X mental retardation 1 gene (FMR1) typically after age 50. As both the presence of white matter hyperintensities (WMHs) and atrophied gray matter on magnetic resonance imaging (MRI) are linked to age-dependent decline in cognition, here we tested whether MRI outcomes (WMH volume (WMHV) and brain volume) were correlated with mitochondrial bioenergetics from peripheral blood monocytic cells in 87 carriers with and without FXTAS. As a parameter assessing cumulative damage, WMHV was correlated to both FXTAS stages and age, and brain volume discriminated between carriers and non-carriers. Similarly, mitochondrial mass and ATP production showed an age-dependent decline across all participants, but in contrast to WMHV, only FADH2-linked ATP production was significantly reduced in carriers vs. non-carriers. In carriers, WMHV negatively correlated with ATP production sustained by glucose-glutamine and FADH2-linked substrates, whereas brain volume was positively associated with the latter and mitochondrial mass. The observed correlations between peripheral mitochondrial bioenergetics and MRI findings-and the lack of correlations with FXTAS diagnosis/stages-may stem from early brain bioenergetic deficits even before overt FXTAS symptoms and/or imaging findings.
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Affiliation(s)
- Junyi Wang
- Center for Mind and Brain, University of California Davis, Davis, CA 95618, USA;
| | - Eleonora Napoli
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California Davis, Davis, CA 95616, USA;
| | - Kyoungmi Kim
- The MIND Institute, University of California Davis Medical Center, Sacramento, CA 95817, USA; (K.K.); (Y.A.M.)
- Department of Public Health Sciences, School of Medicine, University of California Davis, Sacramento, CA 95817, USA
| | - Yingratana A. McLennan
- The MIND Institute, University of California Davis Medical Center, Sacramento, CA 95817, USA; (K.K.); (Y.A.M.)
- Department of Pediatrics, University of California Davis Medical Center, Sacramento, CA 95817, USA
| | - Randi J. Hagerman
- The MIND Institute, University of California Davis Medical Center, Sacramento, CA 95817, USA; (K.K.); (Y.A.M.)
- Department of Pediatrics, University of California Davis Medical Center, Sacramento, CA 95817, USA
| | - Cecilia Giulivi
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California Davis, Davis, CA 95616, USA;
- The MIND Institute, University of California Davis Medical Center, Sacramento, CA 95817, USA; (K.K.); (Y.A.M.)
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16
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Ma DL, Luo Y, Huang R, Zhao ZR, Zhang L, Li YL, Wang Q, Li L, Zhang L. Cornel Iridoid Glycoside Suppresses Hyperactivity Phenotype in rTg4510 Mice through Reducing Tau Pathology and Improving Synaptic Dysfunction. Curr Med Sci 2021; 40:1031-1039. [PMID: 33428130 DOI: 10.1007/s11596-020-2284-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Accepted: 11/19/2020] [Indexed: 12/15/2022]
Abstract
rTg4510 mice are transgenic mice expressing P301L mutant tau and have been developed as an animal model of tauopathies including Alzheimer's disease (AD). Besides cognitive impairments, rTg4510 mice also show abnormal hyperactivity behavior. Cornel iridoid glycoside (CIG) is an active ingredient extracted from Cornus officinalis, a traditional Chinese herb. The purpose of the present study was to investigate the effects of CIG on the emotional disorders such as hyperactivity, and related mechanisms. The emotional hyperactivity was detected by locomotor activity test and Y maze test. Immunofluorescent and immunohistochemical analyses were conducted to measure neuron loss and phosphorylated tau. Western blotting was used to detect the expression of related proteins. The results showed that intragastric administration of CIG for 3 months decreased the hyperactivity phenotype, prevented neuronal loss, reduced tau hyperphosphorylation and aggregation in the amygdala of rTg4510 mice. Meanwhile, CIG alleviated the synaptic dysfunction by increasing the expression of N-methyl-D-aspartate receptors (NMDARs) subunits GluN1 and GluN2A and αamino-3-hydroxy-5-methyl-4-isoxazole propionic acid receptor (AMPAR) subunits GluA1 and GluA2, and increased the level of phosphorylated Ca2+/calmodulin dependent protein kinase II α (p-CaMK IIα) in the brain of rTg4510 mice. In conclusion, CIG may have potential to treat the emotional disorders in tauopathies such as AD through reducing tau pathology and improving synaptic dysfunction.
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Affiliation(s)
- Deng-Lei Ma
- Department of Pharmacy, Xuanwu Hospital of Capital Medical University, Beijing, 100053, China.,Key Laboratory for Neurodegenerative Diseases of Ministry of Education, Beijing, 100053, China.,Beijing Institute for Brain Disorders, Beijing, 100053, China.,Beijing Engineering Research Center for Nerve System Drugs, Beijing, 100053, China
| | - Yi Luo
- Department of Pharmacy, Xuanwu Hospital of Capital Medical University, Beijing, 100053, China.,Key Laboratory for Neurodegenerative Diseases of Ministry of Education, Beijing, 100053, China.,Beijing Institute for Brain Disorders, Beijing, 100053, China.,Beijing Engineering Research Center for Nerve System Drugs, Beijing, 100053, China.,Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Rui Huang
- Department of Pharmacy, Xuanwu Hospital of Capital Medical University, Beijing, 100053, China.,Key Laboratory for Neurodegenerative Diseases of Ministry of Education, Beijing, 100053, China.,Beijing Institute for Brain Disorders, Beijing, 100053, China.,Beijing Engineering Research Center for Nerve System Drugs, Beijing, 100053, China
| | - Zi-Run Zhao
- Renaissance School of Medicine at Stony Brook University, Stony Brook, New York, 11794, USA
| | - Li Zhang
- Department of Pharmacy, Xuanwu Hospital of Capital Medical University, Beijing, 100053, China.,Key Laboratory for Neurodegenerative Diseases of Ministry of Education, Beijing, 100053, China.,Beijing Institute for Brain Disorders, Beijing, 100053, China.,Beijing Engineering Research Center for Nerve System Drugs, Beijing, 100053, China
| | - Ya-Li Li
- Department of Pharmacy, Xuanwu Hospital of Capital Medical University, Beijing, 100053, China.,Key Laboratory for Neurodegenerative Diseases of Ministry of Education, Beijing, 100053, China.,Beijing Institute for Brain Disorders, Beijing, 100053, China.,Beijing Engineering Research Center for Nerve System Drugs, Beijing, 100053, China
| | - Qi Wang
- Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Lin Li
- Department of Pharmacy, Xuanwu Hospital of Capital Medical University, Beijing, 100053, China. .,Key Laboratory for Neurodegenerative Diseases of Ministry of Education, Beijing, 100053, China. .,Beijing Institute for Brain Disorders, Beijing, 100053, China. .,Beijing Engineering Research Center for Nerve System Drugs, Beijing, 100053, China.
| | - Lan Zhang
- Department of Pharmacy, Xuanwu Hospital of Capital Medical University, Beijing, 100053, China. .,Key Laboratory for Neurodegenerative Diseases of Ministry of Education, Beijing, 100053, China. .,Beijing Institute for Brain Disorders, Beijing, 100053, China. .,Beijing Engineering Research Center for Nerve System Drugs, Beijing, 100053, China.
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17
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Snow WM, Cadonic C, Cortes-Perez C, Adlimoghaddam A, Roy Chowdhury SK, Thomson E, Anozie A, Bernstein MJ, Gough K, Fernyhough P, Suh M, Albensi BC. Sex-Specific Effects of Chronic Creatine Supplementation on Hippocampal-Mediated Spatial Cognition in the 3xTg Mouse Model of Alzheimer's Disease. Nutrients 2020; 12:nu12113589. [PMID: 33238473 PMCID: PMC7700653 DOI: 10.3390/nu12113589] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 11/18/2020] [Accepted: 11/19/2020] [Indexed: 12/23/2022] Open
Abstract
The creatine (Cr) energy system has been implicated in Alzheimer’s disease (AD), including reductions in brain phosphoCr and Cr kinase, yet no studies have examined the neurobehavioral effects of Cr supplementation in AD, including the 3xTg mouse model. This studied investigated the effects of Cr supplementation on spatial cognition, plasticity- and disease-related protein levels, and mitochondrial function in the 3xTg hippocampus. Here, 3xTg mice were fed a control or Cr-supplemented (3% Cr (w/w)) diet for 8–9 weeks and tested in the Morris water maze. Mitochondrial oxygen consumption (Seahorse) and protein levels (Western blots) were measured in the hippocampus in subsets of mice. Overall, 3xTg females exhibited impaired memory as compared to males. In females, Cr supplementation decreased escape latency and was associated with increased spatial search strategy use. In males, Cr supplementation decreased the use of spatial search strategies. Pilot data indicated mitochondrial enhancements with Cr supplementation in both sexes. In females, Cr supplementation increased CREB phosphorylation and levels of IκB (NF-κB suppressor), CaMKII, PSD-95, and high-molecular-weight amyloid β (Aβ) species, whereas Aβ trimers were reduced. These data suggest a beneficial preventative effect of Cr supplementation in females and warrant caution against Cr supplementation in males in the AD-like brain.
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Affiliation(s)
- Wanda M. Snow
- Division of Neurodegenerative Disorders, St Boniface Hospital Albrechtsen Research Centre, Winnipeg, MB R2H2A6, Canada; (C.C.); (C.C.-P.); (A.A.); (S.K.R.C.); (E.T.); (A.A.); (P.F.); (M.S.)
- Centre for the Advancement of Teaching and Learning, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
- Correspondence: or (W.M.S); (B.C.A.); Tel.: +1-204-235-3942 (B.C.A.)
| | - Chris Cadonic
- Division of Neurodegenerative Disorders, St Boniface Hospital Albrechtsen Research Centre, Winnipeg, MB R2H2A6, Canada; (C.C.); (C.C.-P.); (A.A.); (S.K.R.C.); (E.T.); (A.A.); (P.F.); (M.S.)
| | - Claudia Cortes-Perez
- Division of Neurodegenerative Disorders, St Boniface Hospital Albrechtsen Research Centre, Winnipeg, MB R2H2A6, Canada; (C.C.); (C.C.-P.); (A.A.); (S.K.R.C.); (E.T.); (A.A.); (P.F.); (M.S.)
| | - Aida Adlimoghaddam
- Division of Neurodegenerative Disorders, St Boniface Hospital Albrechtsen Research Centre, Winnipeg, MB R2H2A6, Canada; (C.C.); (C.C.-P.); (A.A.); (S.K.R.C.); (E.T.); (A.A.); (P.F.); (M.S.)
| | - Subir K. Roy Chowdhury
- Division of Neurodegenerative Disorders, St Boniface Hospital Albrechtsen Research Centre, Winnipeg, MB R2H2A6, Canada; (C.C.); (C.C.-P.); (A.A.); (S.K.R.C.); (E.T.); (A.A.); (P.F.); (M.S.)
- Research Institute in Oncology, CancerCare Manitoba, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Ella Thomson
- Division of Neurodegenerative Disorders, St Boniface Hospital Albrechtsen Research Centre, Winnipeg, MB R2H2A6, Canada; (C.C.); (C.C.-P.); (A.A.); (S.K.R.C.); (E.T.); (A.A.); (P.F.); (M.S.)
| | - Adama Anozie
- Division of Neurodegenerative Disorders, St Boniface Hospital Albrechtsen Research Centre, Winnipeg, MB R2H2A6, Canada; (C.C.); (C.C.-P.); (A.A.); (S.K.R.C.); (E.T.); (A.A.); (P.F.); (M.S.)
| | - Michael J. Bernstein
- Department of Psychological and Social Sciences, Pennsylvania State University Abington, Abington, PA 19001, USA;
| | - Kathleen Gough
- Department of Chemistry, University of Manitoba, Winnipeg, MB R3T 2N2, Canada;
| | - Paul Fernyhough
- Division of Neurodegenerative Disorders, St Boniface Hospital Albrechtsen Research Centre, Winnipeg, MB R2H2A6, Canada; (C.C.); (C.C.-P.); (A.A.); (S.K.R.C.); (E.T.); (A.A.); (P.F.); (M.S.)
- Department of Pharmacology & Therapeutics, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Miyoung Suh
- Division of Neurodegenerative Disorders, St Boniface Hospital Albrechtsen Research Centre, Winnipeg, MB R2H2A6, Canada; (C.C.); (C.C.-P.); (A.A.); (S.K.R.C.); (E.T.); (A.A.); (P.F.); (M.S.)
- Department of Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Benedict C. Albensi
- Division of Neurodegenerative Disorders, St Boniface Hospital Albrechtsen Research Centre, Winnipeg, MB R2H2A6, Canada; (C.C.); (C.C.-P.); (A.A.); (S.K.R.C.); (E.T.); (A.A.); (P.F.); (M.S.)
- Department of Pharmacology & Therapeutics, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
- Correspondence: or (W.M.S); (B.C.A.); Tel.: +1-204-235-3942 (B.C.A.)
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18
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Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder that commonly occurs among older individuals. Increasing evidence suggests that a low-caloric diet might be a promising adjuvant therapeutic strategy for slowing or preventing the pathogenesis and progression of AD through the induction of autophagy. Several intracellular pathways have been implicated in caloric restriction (CR)-induced autophagy. In this review, we summarized the efficacy of CR as well as its mimetics (resveratrol, spermidine, aspirin, rapamycin, metformin, and curcumin) in improving cognitive function of rodent models of AD. On the basis of recent in vitro and animal studies, the beneficial effects of CR- or caloric restriction mimetics-induced autophagy in alleviating amyloid burden and tau pathology of AD were also discussed.
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Affiliation(s)
- Yi Yang
- Department of Pharmacology, Hangzhou Key Laboratory of Medical Neurobiology, School of Medicine, Hangzhou Normal University, Hangzhou 310036, China.
| | - Lihui Zhang
- Department of Pharmacology, Hangzhou Key Laboratory of Medical Neurobiology, School of Medicine, Hangzhou Normal University, Hangzhou 310036, China.
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19
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Xie K, Kapetanou M, Sidiropoulou K, Bano D, Gonos ES, Djordjevic AM, Ehninger D. Signaling pathways of dietary energy restriction and metabolism on brain physiology and in age-related neurodegenerative diseases. Mech Ageing Dev 2020; 192:111364. [PMID: 32991920 DOI: 10.1016/j.mad.2020.111364] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 08/17/2020] [Accepted: 09/22/2020] [Indexed: 02/07/2023]
Abstract
Several laboratory animal models have shown that dietary energy restriction (ER) can promote longevity and improve various health aspects in old age. However, whether the entire spectrum of ER-induced short- and long-term physiological and metabolic adaptions is translatable to humans remains to be determined. In this review article, we present recent evidence towards the elucidation of the impact of ER on brain physiology and in age-related neurodegenerative diseases. We also discuss modulatory influences of ER on metabolism and overall on human health, limitations of current experimental designs as well as future perspectives for ER trials in humans. Finally, we summarize signaling pathways and processes known to be affected by both aging and ER with a special emphasis on the link between ER and cellular proteostasis.
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Affiliation(s)
- Kan Xie
- Molecular and Cellular Cognition Lab, German Center for Neurodegenerative Diseases (DZNE), Venusberg-Campus 1, 53127 Bonn, Germany
| | - Marianna Kapetanou
- Institute of Chemical Biology, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave., Athens, 11635, Greece
| | | | - Daniele Bano
- Aging and Neurodegeneration Lab, German Center for Neurodegenerative Diseases (DZNE), Venusberg-Campus 1, 53127 Bonn, Germany
| | - Efstathios S Gonos
- Institute of Chemical Biology, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave., Athens, 11635, Greece
| | - Aleksandra Mladenovic Djordjevic
- Department of Neurobiology, Institute for Biological Research 'Sinisa Stankovic', University of Belgrade, National Institute of Republic of Serbia, Boulevard Despota Stefana 142, 11000 Belgrade, Serbia
| | - Dan Ehninger
- Molecular and Cellular Cognition Lab, German Center for Neurodegenerative Diseases (DZNE), Venusberg-Campus 1, 53127 Bonn, Germany.
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20
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Correa CR, Schena C, Lopes SC, Prediger RD, Silva EL, Venske DKR, Ribeiro LC, Moreira JD. Combined effects of caloric restriction and fish oil attenuated anti-depressant and anxiolytic-like effects of fish oil: association with hippocampal BDNF concentrations. Behav Brain Res 2020; 393:112770. [PMID: 32561388 DOI: 10.1016/j.bbr.2020.112770] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 04/09/2020] [Accepted: 06/08/2020] [Indexed: 01/18/2023]
Abstract
Omega-3-enriched fish oil (FO) and caloric restriction (CR) are nutritional therapeutic approaches that exert an important impact on brain function, behavior, memory, and neuroprotection. Here, we investigate the synergic effects of both therapeutic approaches combined (CR + FO) on behavior (memory, anxiety-like behavior, antidepressant-like behavior), as well as its association with hippocampal brain-derived neurotrophic factor (BDNF) concentrations. Adult male Wistar rats were divided into four dietary groups: Control group (C) - chow ad libitum; CR group - 30 % CR, considering C group food intake; FO group - FO-enriched chow ad libitum; and CR + FO group - FO-enriched 30 % CR chow. After 12 weeks of dietary treatment, behavioural analysis set was conducted, and hippocampal BDNF concentrations were measured. FO group presented anxiolytic-like and antidepressant-like behaviors as well as improved memory in the Morris' water maze. These effects were attenuated by the combined CR + FO treatment. FO group also presented higher BDNF concentrations. There was a positive association between the number of entries in the platform quadrant in the MWM and hippocampal BDNF concentrations (β = 0.39; R² = 0.15; p = 0.042) and an inverse association between forced swim immobility time and BDNF concentrations (β = -0.39; R² = 0.15; p = 0.041). Taken together, our data showed that the 12-week FO dietary treatment promoted anxiolytic-like and antidepressant-like behaviors as well as memory improvement, and these effects were associated with BDNF concentrations. Synergic effects of interventions attenuated FO-related behavioral responses and BDNF concentrations and probably reduced hippocampal neuroplasticity.
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Affiliation(s)
- Cinthia R Correa
- Post Graduate Program in Nutrition, Department of Nutrition, Health Sciences Centre, Universidade Federal de Santa Catarina (UFSC), Brazil
| | - Claudia Schena
- Department of Nutrition, Health Sciences Centre, Universidade Federal de Santa Catarina (UFSC), Brazil
| | - Samantha C Lopes
- Post Graduate Program in Pharmacology, Department of Pharmacology, Universidade Federal de Santa Catarina (UFSC), Brazil; Medical Science Research Group - Biomedical and Clinical Investigation, Medicine Graduation Course, Centro Universitário para o Desenvolvimento do Alto Vale do Itajaí. Brazil
| | - Rui D Prediger
- Post Graduate Program in Pharmacology, Department of Pharmacology, Universidade Federal de Santa Catarina (UFSC), Brazil
| | - E L Silva
- Post Graduate Program in Nutrition, Department of Nutrition, Health Sciences Centre, Universidade Federal de Santa Catarina (UFSC), Brazil
| | - Débora K R Venske
- Post Graduate Program in Nutrition, Department of Nutrition, Health Sciences Centre, Universidade Federal de Santa Catarina (UFSC), Brazil
| | - L C Ribeiro
- Department of Nutrition, Health Sciences Centre, Universidade Federal de Santa Catarina (UFSC), Brazil
| | - J D Moreira
- Post Graduate Program in Nutrition, Department of Nutrition, Health Sciences Centre, Universidade Federal de Santa Catarina (UFSC), Brazil.
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21
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Dias IR, Santos CDS, Magalhães CODE, de Oliveira LRS, Peixoto MFD, De Sousa RAL, Cassilhas RC. Does calorie restriction improve cognition? IBRO Rep 2020; 9:37-45. [PMID: 33336102 PMCID: PMC7733132 DOI: 10.1016/j.ibror.2020.05.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 05/29/2020] [Indexed: 01/14/2023] Open
Abstract
Calorie restriction (CR) has been considered the most effective non-pharmacological intervention to counteract aging-related diseases and improve longevity. This intervention has shown beneficial effects in the prevention and treatment of several chronic diseases and functional declines related to aging, such as Parkinson's, Alzheimer's, and neuroendocrine disorders. However, the effects of CR on cognition show controversial results since its effects vary according to intensity, duration, and the period of CR. This review focuses on the main studies published in the last ten years regarding the consequences of CR on cognition in different neurological diseases and conditions of experimental animals. Also, possible CR mimetics are discussed. These findings highlight the potential beneficial effects of CR of up to 40 % on cognition when started early in life in non human animals.
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Affiliation(s)
- Isabella Rocha Dias
- Neuroplasticity and Exercise Study Group (Grupo de Estudos em Neuroplasticidade e Exercício - GENE), UFVJM, Diamantina, MG, Brazil.,Multicenter Post Graduation Program in Physiological Sciences (PMPGCF), UFVJM, Brazilian Society of Physiology, Diamantina, MG, Brazil
| | - Carina de Sousa Santos
- Multicenter Post Graduation Program in Physiological Sciences (PMPGCF), UFVJM, Brazilian Society of Physiology, Diamantina, MG, Brazil
| | - Caíque Olegário Diniz E Magalhães
- Neuroplasticity and Exercise Study Group (Grupo de Estudos em Neuroplasticidade e Exercício - GENE), UFVJM, Diamantina, MG, Brazil.,Multicenter Post Graduation Program in Physiological Sciences (PMPGCF), UFVJM, Brazilian Society of Physiology, Diamantina, MG, Brazil
| | - Lucas Renan Sena de Oliveira
- Neuroplasticity and Exercise Study Group (Grupo de Estudos em Neuroplasticidade e Exercício - GENE), UFVJM, Diamantina, MG, Brazil.,Multicenter Post Graduation Program in Physiological Sciences (PMPGCF), UFVJM, Brazilian Society of Physiology, Diamantina, MG, Brazil
| | - Marco Fabrício Dias Peixoto
- Department of Physical Education, Federal University of the Valleys of Jequitinhonha and Mucuri (UFVJM), Diamantina, MG, Brazil.,Neuroplasticity and Exercise Study Group (Grupo de Estudos em Neuroplasticidade e Exercício - GENE), UFVJM, Diamantina, MG, Brazil.,Multicenter Post Graduation Program in Physiological Sciences (PMPGCF), UFVJM, Brazilian Society of Physiology, Diamantina, MG, Brazil.,Post Graduation Program in Health Science (PPGCS), UFVJM, Diamantina, MG, Brazil
| | - Ricardo Augusto Leoni De Sousa
- Neuroplasticity and Exercise Study Group (Grupo de Estudos em Neuroplasticidade e Exercício - GENE), UFVJM, Diamantina, MG, Brazil.,Multicenter Post Graduation Program in Physiological Sciences (PMPGCF), UFVJM, Brazilian Society of Physiology, Diamantina, MG, Brazil
| | - Ricardo Cardoso Cassilhas
- Department of Physical Education, Federal University of the Valleys of Jequitinhonha and Mucuri (UFVJM), Diamantina, MG, Brazil.,Neuroplasticity and Exercise Study Group (Grupo de Estudos em Neuroplasticidade e Exercício - GENE), UFVJM, Diamantina, MG, Brazil.,Multicenter Post Graduation Program in Physiological Sciences (PMPGCF), UFVJM, Brazilian Society of Physiology, Diamantina, MG, Brazil.,Post Graduation Program in Health Science (PPGCS), UFVJM, Diamantina, MG, Brazil
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22
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Joly-Amado A, Hunter J, Quadri Z, Zamudio F, Rocha-Rangel PV, Chan D, Kesarwani A, Nash K, Lee DC, Morgan D, Gordon MN, Selenica MLB. CCL2 Overexpression in the Brain Promotes Glial Activation and Accelerates Tau Pathology in a Mouse Model of Tauopathy. Front Immunol 2020; 11:997. [PMID: 32508844 PMCID: PMC7251073 DOI: 10.3389/fimmu.2020.00997] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Accepted: 04/27/2020] [Indexed: 12/15/2022] Open
Abstract
Innate immune activation is a major contributor to Alzheimer's Disease (AD) pathophysiology, although the mechanisms involved are poorly understood. Chemokine C-C motif ligand (CCL) 2 is produced by neurons and glial cells and is upregulated in the AD brain. Transgene expression of CCL2 in mouse models of amyloidosis produces microglia-induced amyloid β oligomerization, a strong indication of the role of these activation pathways in the amyloidogenic processes of AD. We have previously shown that CCL2 polarizes microglia in wild type mice. However, how CCL2 signaling contributes to tau pathogenesis remains unknown. To address this question, CCL2 was delivered via recombinant adeno-associated virus serotype 9 into both cortex and hippocampus of a mouse model with tau pathology (rTg4510). We report that CCL2 overexpression aggravated tau pathology in rTg4510 as shown by the increase in Gallyas stained neurofibrillary tangles as well as phosphorylated tau-positive inclusions. In addition, biochemical analysis showed a reduction in the levels of detergent-soluble tau species followed by increase in the insoluble fraction, indicating a shift toward larger tau aggregates. Indeed, increased levels of high molecular weight species of phosphorylated tau were found in the mice injected with CCL2. We also report that worsening of tau pathology following CCL2 overexpression was accompanied by a distinct inflammatory response. We report an increase in leukocyte common antigen (CD45) and Cluster of differentiation 68 (CD68) expression in the brain of rTg4510 mice without altering the expression levels of a cell-surface protein Transmembrane Protein 119 (Tmem119) and ionized calcium-binding adaptor molecule 1 (Iba-1) in resident microglia. Furthermore, the analysis of cytokines in brain extract showed a significant increase in interleukin (IL)-6 and CCL3, while CCL5 levels were decreased in CCL2 mice. No changes were observed in IL-1α, IL-1β, TNF-α. IL-4, Vascular endothelial growth factor-VEGF, IL-13 and CCL11. Taken together our data report for the first time that overexpression of CCL2 promotes the increase of pathogenic tau species and is associated with glial neuroinflammatory changes that are deleterious. We propose that these events may contribute to the pathogenesis of Alzheimer's disease and other tauopathies.
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Affiliation(s)
- Aurelie Joly-Amado
- Molecular Pharmacology and Physiology, College of Medicine, University of South Florida, Tampa, FL, United States
| | - Jordan Hunter
- Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL, United States
| | - Zainuddin Quadri
- Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL, United States
| | - Frank Zamudio
- Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL, United States
| | - Patricia V Rocha-Rangel
- Michigan State University, Department of Translational Neuroscience, Grand Rapids, MI, United States
| | - Deanna Chan
- Molecular Pharmacology and Physiology, College of Medicine, University of South Florida, Tampa, FL, United States
| | - Anisha Kesarwani
- Molecular Pharmacology and Physiology, College of Medicine, University of South Florida, Tampa, FL, United States
| | - Kevin Nash
- Molecular Pharmacology and Physiology, College of Medicine, University of South Florida, Tampa, FL, United States
| | - Daniel C Lee
- Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL, United States
| | - Dave Morgan
- Michigan State University, Department of Translational Neuroscience, Grand Rapids, MI, United States
| | - Marcia N Gordon
- Michigan State University, Department of Translational Neuroscience, Grand Rapids, MI, United States
| | - Maj-Linda B Selenica
- Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL, United States.,Sanders-Brown Center on Aging, Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY, United States
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23
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Abstract
Tau protein which was discovered in 1975 [310] became of great interest when it was identified as the main component of neurofibrillary tangles (NFT), a pathological feature in the brain of patients with Alzheimer's disease (AD) [39, 110, 232]. Tau protein is expressed mainly in the brain as six isoforms generated by alternative splicing [46, 97]. Tau is a microtubule associated proteins (MAPs) and plays a role in microtubules assembly and stability, as well as diverse cellular processes such as cell morphogenesis, cell division, and intracellular trafficking [49]. Additionally, Tau is involved in much larger neuronal functions particularly at the level of synapses and nuclei [11, 133, 280]. Tau is also physiologically released by neurons [233] even if the natural function of extracellular Tau remains to be uncovered (see other chapters of the present book).
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24
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Kim C, Pinto AM, Bordoli C, Buckner LP, Kaplan PC, Del Arenal IM, Jeffcock EJ, Hall WL, Thuret S. Energy Restriction Enhances Adult Hippocampal Neurogenesis-Associated Memory after Four Weeks in an Adult Human Population with Central Obesity; a Randomized Controlled Trial. Nutrients 2020; 12:E638. [PMID: 32121111 DOI: 10.3390/nu12030638] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 02/20/2020] [Accepted: 02/25/2020] [Indexed: 01/13/2023] Open
Abstract
Adult neurogenesis, the generation of new neurons throughout life, occurs in the subventricular zone of the dentate gyrus in the human hippocampal formation. It has been shown in rodents that adult hippocampal neurogenesis is needed for pattern separation, the ability to differentially encode small changes derived from similar inputs, and recognition memory, as well as the ability to recognize previously encountered stimuli. Improved hippocampus-dependent cognition and cellular readouts of adult hippocampal neurogenesis have been reported in daily energy restricted and intermittent fasting adult mice. Evidence that nutrition can significantly affect brain structure and function is increasing substantially. This randomized intervention study investigated the effects of intermittent and continuous energy restriction on human hippocampal neurogenesis-related cognition, which has not been reported previously. Pattern separation and recognition memory were measured in 43 individuals with central obesity aged 35-75 years, before and after a four-week dietary intervention using the mnemonic similarity task. Both groups significantly improved pattern separation (P = 0.0005), but only the intermittent energy restriction group had a significant deterioration in recognition memory. There were no significant differences in cognitive improvement between the two diets. This is the first human study to investigate the association between energy restriction with neurogenesis-associated cognitive function. Energy restriction may enhance hippocampus-dependent memory and could benefit those in an ageing population with declining cognition. This study was registered on ClinicalTrials.gov (NCT02679989) on 11 February 2016.
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25
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Lazic D, Tesic V, Jovanovic M, Brkic M, Milanovic D, Zlokovic BV, Kanazir S, Perovic M. Every-other-day feeding exacerbates inflammation and neuronal deficits in 5XFAD mouse model of Alzheimer's disease. Neurobiol Dis 2020; 136:104745. [PMID: 31931140 DOI: 10.1016/j.nbd.2020.104745] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 11/22/2019] [Accepted: 01/09/2020] [Indexed: 02/04/2023] Open
Abstract
Food restriction has been widely associated with beneficial effects on brain aging and age-related neurodegenerative diseases such as Alzheimer's disease. However, previous studies on the effects of food restriction on aging- or pathology-related cognitive decline are controversial, emphasizing the importance of the type, onset and duration of food restriction. In the present study, we assessed the effects of preventive every-other-day (EOD) feeding regimen on neurodegenerative phenotype in 5XFAD transgenic mice, a commonly used mouse model of Alzheimer's disease. EOD feeding regimen was introduced to transgenic female mice at the age of 2 months and the effects on amyloid-β (Aβ) accumulation, gliosis, synaptic plasticity, and blood-brain barrier breakdown were analyzed in cortical tissue of 6-month-old animals. Surprisingly, significant increase of inflammation in the cortex of 5XFAD fed EOD mice was observed, reflected by the expression of microglial and astrocytic markers. This increase in reactivity and/or proliferation of glial cells was accompanied by an increase in proinflammatory cytokine TNF-α, p38 MAPK and EAAT2, and a decrease in GAD67. NMDA receptor subunit 2B, related to glutamate excitotoxicity, was increased in the cortex of 5XFAD-EOD mice indicating additional alterations in glutamatergic signaling. Furthermore, 4 months of EOD feeding regimen had led to synaptic plasticity proteins reduction and neuronal injury in 5XFAD mice. However, EOD feeding regimen did not affect Aβ load and blood-brain barrier permeability in the cortex of 5XFAD mice. Our results demonstrate that EOD feeding regimen exacerbates Alzheimer's disease-like neurodegenerative and neuroinflammatory changes irrespective of Aβ pathology in 5XFAD mice, suggesting that caution should be paid when using food restrictions in the prodromal phase of this neurodegenerative disease.
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Affiliation(s)
- Divna Lazic
- Department of Neurobiology, Institute for Biological Research "Siniša Stanković"- National Institute of Republic of Serbia, University of Belgrade, Bul. despota Stefana 142, 11000 Belgrade, Serbia; Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, 1501 San Pablo St, 90033 Los Angeles, CA, USA; Department of Physiology and Neuroscience, Keck School of Medicine, University of Southern California, 1501 San Pablo St, 90033 Los Angeles, CA, USA.
| | - Vesna Tesic
- Department of Neurobiology, Institute for Biological Research "Siniša Stanković"- National Institute of Republic of Serbia, University of Belgrade, Bul. despota Stefana 142, 11000 Belgrade, Serbia.
| | - Mirna Jovanovic
- Department of Neurobiology, Institute for Biological Research "Siniša Stanković"- National Institute of Republic of Serbia, University of Belgrade, Bul. despota Stefana 142, 11000 Belgrade, Serbia.
| | - Marjana Brkic
- Department of Neurobiology, Institute for Biological Research "Siniša Stanković"- National Institute of Republic of Serbia, University of Belgrade, Bul. despota Stefana 142, 11000 Belgrade, Serbia.
| | - Desanka Milanovic
- Department of Neurobiology, Institute for Biological Research "Siniša Stanković"- National Institute of Republic of Serbia, University of Belgrade, Bul. despota Stefana 142, 11000 Belgrade, Serbia.
| | - Berislav V Zlokovic
- Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, 1501 San Pablo St, 90033 Los Angeles, CA, USA; Department of Physiology and Neuroscience, Keck School of Medicine, University of Southern California, 1501 San Pablo St, 90033 Los Angeles, CA, USA.
| | - Selma Kanazir
- Department of Neurobiology, Institute for Biological Research "Siniša Stanković"- National Institute of Republic of Serbia, University of Belgrade, Bul. despota Stefana 142, 11000 Belgrade, Serbia.
| | - Milka Perovic
- Department of Neurobiology, Institute for Biological Research "Siniša Stanković"- National Institute of Republic of Serbia, University of Belgrade, Bul. despota Stefana 142, 11000 Belgrade, Serbia.
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26
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Camberos-Luna L, Massieu L. Therapeutic strategies for ketosis induction and their potential efficacy for the treatment of acute brain injury and neurodegenerative diseases. Neurochem Int 2019; 133:104614. [PMID: 31785349 DOI: 10.1016/j.neuint.2019.104614] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 11/26/2019] [Accepted: 11/26/2019] [Indexed: 12/13/2022]
Abstract
The therapeutic use of ketone bodies (KB) against acute brain injury and neurodegenerative disorders has lately been suggested by many studies. Several mechanisms responsible for the protective action of KB have been described, including metabolic, anti-inflammatory and epigenetic. However, it is still not clear whether a specific mechanism of action can be associated with a particular neurological disorder. Different strategies to induce ketosis including the ketogenic diet (KD), caloric restriction (CR), intermittent fasting (IF), as well as the administration of medium chain triglycerides (MCTs), exogenous ketones or KB derivatives, have been used in animal models of brain injury and in humans. They have shown different degrees of success to prevent neuronal damage, motor alterations and cognitive decline. However, more investigation is needed in order to establish safe protocols for clinical application. Throughout the present review, we describe the different approaches that have been used to elevate blood KB and discuss their effectiveness considering their advantages and limitations, as tested in models of brain injury, neurodegeneration and clinical research. We also describe the mechanisms of action of KB in non-pathologic conditions and in association with their protective effect against neuronal damage in acute neurological disorders and neurodegenerative diseases.
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Affiliation(s)
- Lucy Camberos-Luna
- División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Ciudad de México, CP 04510, Mexico.
| | - Lourdes Massieu
- División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Ciudad de México, CP 04510, Mexico.
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27
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Quadri Z, Johnson N, Zamudio F, Miller A, Peters M, Smeltzer S, Hunt JB, Housley SB, Brown B, Kraner S, Norris CM, Nash K, Weeber E, Lee DC, Selenica MLB. Overexpression of human wtTDP-43 causes impairment in hippocampal plasticity and behavioral deficits in CAMKII-tTa transgenic mouse model. Mol Cell Neurosci 2019; 102:103418. [PMID: 31705957 DOI: 10.1016/j.mcn.2019.103418] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 10/23/2019] [Accepted: 10/31/2019] [Indexed: 12/13/2022] Open
Abstract
AIMS The current study utilizes the adeno-associated viral gene transfer system in the CAMKIIα-tTA mouse model to overexpress human wild type TDP-43 (wtTDP-43) and α-synuclein (α-Syn) proteins. The co-existence of these proteins is evident in the pathology of neurodegenerative disorders such as frontotemporal lobar degeneration (FTLD), Parkinson disease (PD), and dementia with Lewy bodies (DLB). METHODS The novel bicistronic recombinant adeno-associated virus (rAAV) serotype 9 drives wtTDP-43 and α-Syn expression in the hippocampus via "TetO" CMV promoter. Behavior, electrophysiology, and biochemical and histological assays were used to validate neuropathology. RESULTS We report that overexpression of wtTDP-43 but not α-Syn contributes to hippocampal CA2-specific pyramidal neuronal loss and overall hippocampal atrophy. Further, we report a reduction of hippocampal long-term potentiation and decline in learning and memory performance of wtTDP-43 expressing mice. Elevated wtTDP-43 levels induced selective degeneration of Purkinje cell protein 4 (PCP-4) positive neurons while both wtTDP-43 and α-Syn expression reduced subsets of the glutamate receptor expression in the hippocampus. CONCLUSIONS Overall, our findings suggest the significant vulnerability of hippocampal neurons toward elevated wtTDP-43 levels possibly via PCP-4 and GluR-dependent calcium signaling pathways. Further, we report that wtTDP-43 expression induced selective CA2 subfield degeneration, contributing to the deterioration of the hippocampal-dependent cognitive phenotype.
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Affiliation(s)
- Zainuddin Quadri
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL, USA; Byrd Alzheimer's Institute, University of South Florida, Tampa, FL, USA
| | - Nicholas Johnson
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL, USA; Byrd Alzheimer's Institute, University of South Florida, Tampa, FL, USA
| | - Frank Zamudio
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL, USA; Byrd Alzheimer's Institute, University of South Florida, Tampa, FL, USA
| | - Abraian Miller
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL, USA; Byrd Alzheimer's Institute, University of South Florida, Tampa, FL, USA
| | - Melinda Peters
- Byrd Alzheimer's Institute, University of South Florida, Tampa, FL, USA; Department of Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Shayna Smeltzer
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL, USA; Byrd Alzheimer's Institute, University of South Florida, Tampa, FL, USA
| | - Jerry B Hunt
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL, USA; Byrd Alzheimer's Institute, University of South Florida, Tampa, FL, USA
| | - Steven B Housley
- Byrd Alzheimer's Institute, University of South Florida, Tampa, FL, USA; Department of Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Breanna Brown
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL, USA; Byrd Alzheimer's Institute, University of South Florida, Tampa, FL, USA
| | - Susan Kraner
- Sanders-Brown Center on Aging, University of Kentucky College of Medicine, Lexington, KY, USA
| | - Christopher M Norris
- Sanders-Brown Center on Aging, University of Kentucky College of Medicine, Lexington, KY, USA
| | - Kevin Nash
- Byrd Alzheimer's Institute, University of South Florida, Tampa, FL, USA; Department of Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Edwin Weeber
- Byrd Alzheimer's Institute, University of South Florida, Tampa, FL, USA; Department of Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Daniel C Lee
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL, USA; Byrd Alzheimer's Institute, University of South Florida, Tampa, FL, USA
| | - Maj-Linda B Selenica
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL, USA; Byrd Alzheimer's Institute, University of South Florida, Tampa, FL, USA.
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28
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Abstract
Neurodegenerative diseases are characterized by the progressive functional loss of neurons in the brain, causing cognitive impairment and motoneuron disability. Although multifactorial interactions are evident, nutrition plays an essential role in the pathogenesis and evolution of these diseases. A systematic literature search was performed, and the prevalence of studies evaluated the effect of the Mediterranean diet (MeDiet), nutritional support, EPA and DHA, and vitamins on memory and cognition impairment. The data showed that malnutrition and low body mass index (BMI) is correlated with the higher development of dementia and mortality. MeDiet, nutritional support, and calorie-controlled diets play a protective effect against cognitive decline, Alzheimer's disease (AD), Parkinson disease (PD) while malnutrition and insulin resistance represent significant risk factors. Malnutrition activates also the gut-microbiota-brain axis dysfunction that exacerbate neurogenerative process. Omega-3 and -6, and the vitamins supplementation seem to be less effective in protecting neuron degeneration. Insulin activity is a prevalent factor contributing to brain health while malnutrition correlated with the higher development of dementia and mortality.
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Affiliation(s)
| | - Pomares Fredy Herrera
- Director del Centro de Telemedicina, Grupo de investigación en Atención Primaria en salud/Telesalud, Doctorado en Medicina /Neurociencias, University of Cartagena, Colombia
| | - Rizzi Laura
- Molecular Biology, School of Medicine and Surgery, University of Milano-Bicocca, Monza Brianza, Italy
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29
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Joly-Amado A, Davtyan H, Serraneau K, Jules P, Zitnyar A, Pressman E, Zagorski K, Antonyan T, Hovakimyan A, Paek HJ, Gordon MN, Cribbs DH, Petrovsky N, Agadjanyan MG, Ghochikyan A, Morgan D. Active immunization with tau epitope in a mouse model of tauopathy induced strong antibody response together with improvement in short memory and pSer396-tau pathology. Neurobiol Dis 2019; 134:104636. [PMID: 31629891 DOI: 10.1016/j.nbd.2019.104636] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 08/30/2019] [Accepted: 10/07/2019] [Indexed: 12/16/2022] Open
Abstract
Abnormal tau hyperphosphorylation and its aggregation into neurofibrillary tangles are a hallmark of tauopathies, neurodegenerative disorders that include Alzheimer's disease (AD). Active and passive Tau-immunotherapy has been proposed as a therapeutic approach to AD with mixed results. One of the limitations of active immunotherapy may be associated with the mediocre immunogenicity of vaccines that are not inducing therapeutically potent titers of antibodies. The aim of this study was to test the efficacy of an anti-tau vaccine, AV-1980R/A composed of N terminal peptide of this molecule fused with an immunogenic MultiTEP platform and formulated in a strong adjuvant, AdvaxCpG in a Tg4510 mouse model of tauopathy. Experimental mice were immunized with AV-1980R/A and a control group of mice were injected with adjuvant only. Nontransgenic and tetracycline transactivator (tTA) transgenic littermates were included as baseline controls to contrast with the tau phenotype. Active immunization with AV-1980R/A induced very strong anti-tau humoral immune responses in both nontransgenic and transgenic mice with evidence of IgG in brains of AV-1980R/A vaccinated mice. These experimental animals displayed an improvement in short-term memory during a novel object recognition test. However, impairments in other behavioral tasks were not prevented by AV-1980R/A vaccinations. At the same time, high titers of anti-tau antibodies reduced hyperphosphorylated pSer396 tau but did not lower the level of other phosphorylated tau species in the brains of AV-1980R/A vaccinated mice. These data indicate that active immunotherapy with an N-terminal Tau epitope was only partially effective in improving cognition and reducing pathology in the stringent Tg4510 mouse model of tauopathy.
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Affiliation(s)
- A Joly-Amado
- USF Health Byrd Alzheimer's Institute, Tampa, FL 33613, USA.
| | - H Davtyan
- The Institute for Molecular Medicine, Huntington Beach, CA 92647, USA; Institute for Memory Impairments and Neurological Disorders, University of California Irvine, Irvine, CA 92697, USA
| | - K Serraneau
- USF Health Byrd Alzheimer's Institute, Tampa, FL 33613, USA
| | - P Jules
- USF Health Byrd Alzheimer's Institute, Tampa, FL 33613, USA
| | - A Zitnyar
- USF Health Byrd Alzheimer's Institute, Tampa, FL 33613, USA
| | - E Pressman
- USF Health Byrd Alzheimer's Institute, Tampa, FL 33613, USA
| | - K Zagorski
- The Institute for Molecular Medicine, Huntington Beach, CA 92647, USA
| | - T Antonyan
- The Institute for Molecular Medicine, Huntington Beach, CA 92647, USA
| | - A Hovakimyan
- The Institute for Molecular Medicine, Huntington Beach, CA 92647, USA
| | - H J Paek
- Molecular Pharmacology and Physiology, College of Medicine, University of South Florida, Tampa, FL, USA
| | - M N Gordon
- USF Health Byrd Alzheimer's Institute, Tampa, FL 33613, USA
| | - D H Cribbs
- Institute for Memory Impairments and Neurological Disorders, University of California Irvine, Irvine, CA 92697, USA
| | - N Petrovsky
- Flinders Med. Ctr., Bedford Park, Adelaide 5042, Australia
| | - M G Agadjanyan
- The Institute for Molecular Medicine, Huntington Beach, CA 92647, USA
| | - A Ghochikyan
- The Institute for Molecular Medicine, Huntington Beach, CA 92647, USA
| | - D Morgan
- USF Health Byrd Alzheimer's Institute, Tampa, FL 33613, USA
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30
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Minaglia C, Giannotti C, Boccardi V, Mecocci P, Serafini G, Odetti P, Monacelli F. Cachexia and advanced dementia. J Cachexia Sarcopenia Muscle 2019; 10:263-277. [PMID: 30794350 PMCID: PMC6463474 DOI: 10.1002/jcsm.12380] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 11/20/2018] [Indexed: 12/22/2022] Open
Abstract
Cachexia is a complex metabolic process that is associated with several end-stage organ diseases. It is known to be also associated with advanced dementia, although the pathophysiologic mechanisms are still largely unknown. The present narrative review is aimed at presenting recent insights concerning the pathophysiology of weight loss and wasting syndrome in dementia, the putative mechanisms involved in the dysregulation of energy balance, and the interplay among the chronic clinical conditions of sarcopenia, malnutrition, and frailty in the elderly. We discuss the clinical implications of these new insights, with particular attention to the challenging question of nutritional needs in advanced dementia and the utility of tube feeding in order to optimize the management of end-stage dementia.
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Affiliation(s)
- Cecilia Minaglia
- Department of Internal Medicine and Medical Specialties (DIMI), Section of Geriatrics, University of Genoa, Genoa, Italy
| | - Chiara Giannotti
- Department of Internal Medicine and Medical Specialties (DIMI), Section of Geriatrics, University of Genoa, Genoa, Italy
| | - Virginia Boccardi
- Department of Medicine, Institute of Gerontology and Geriatrics, University of Perugia, Perugia, Italy
| | - Patrizia Mecocci
- Department of Medicine, Institute of Gerontology and Geriatrics, University of Perugia, Perugia, Italy
| | - Gianluca Serafini
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genoa, Genoa, Italy.,Section of Psychiatry, I.R.C.C.S. Ospedale Policlinico San Martino, Genoa, Italy
| | - Patrizio Odetti
- Department of Internal Medicine and Medical Specialties (DIMI), Section of Geriatrics, University of Genoa, Genoa, Italy.,IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Fiammetta Monacelli
- Department of Internal Medicine and Medical Specialties (DIMI), Section of Geriatrics, University of Genoa, Genoa, Italy.,IRCCS Ospedale Policlinico San Martino, Genoa, Italy
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31
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Rubovitch V, Pharayra A, Har-Even M, Dvir O, Mattson MP, Pick CG. Dietary Energy Restriction Ameliorates Cognitive Impairment in a Mouse Model of Traumatic Brain Injury. J Mol Neurosci 2019; 67:613-621. [PMID: 30734244 DOI: 10.1007/s12031-019-01271-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 01/24/2019] [Indexed: 12/12/2022]
Abstract
Traumatic brain injury (TBI) is one of the most common causes of neurological damage in young people. It was previously reported that dietary restriction, by either intermittent fasting (IF) or daily caloric restriction (CR), could protect neurons against dysfunction and degeneration in animal models of stroke and Parkinson's disease. Recently, several studies have shown that the protein Sirtuin 1 (SIRT1) plays a significant role in the induced neuroprotection following dietary restriction. In the present study, we found a significant reduction of SIRT1 levels in the cortex and hippocampus in a mouse model of mild weight-drop closed head TBI. This reduction was prevented in mice maintained on IF (alternate day fasting) and CR initiated after the head trauma. Hippocampus-dependent learning and memory (measured using a novel object recognition test) was impaired 30 days post-injury in mice fed ad libitum, but not in mice in the IF and CR groups. These results suggest a clinical potential for IF and/or CR as an intervention to reduce brain damage and improve functional outcome in TBI patients.
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Affiliation(s)
- V Rubovitch
- Department of Anatomy and Anthropology, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel.
| | - A Pharayra
- Department of Anatomy and Anthropology, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - M Har-Even
- Department of Anatomy and Anthropology, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - O Dvir
- Department of Anatomy and Anthropology, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - M P Mattson
- Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, Baltimore, MD, USA
| | - C G Pick
- Department of Anatomy and Anthropology, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel.,Sagol School of Neuroscience, Tel-Aviv University, 69978, Tel-Aviv, Israel.,The Dr. Miriam and Sheldon G. Adelson Chair and Center for the Biology of Addictive Diseases, Tel-Aviv University, 69978, Tel-Aviv, Israel
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Bok E, Jo M, Lee S, Lee BR, Kim J, Kim HJ. Dietary Restriction and Neuroinflammation: A Potential Mechanistic Link. Int J Mol Sci 2019; 20:E464. [PMID: 30678217 DOI: 10.3390/ijms20030464] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 01/19/2019] [Indexed: 12/12/2022] Open
Abstract
Chronic neuroinflammation is a common feature of the aged brain, and its association with the major neurodegenerative changes involved in cognitive impairment and motor dysfunction is well established. One of the most potent antiaging interventions tested so far is dietary restriction (DR), which extends the lifespan in various organisms. Microglia and astrocytes are two major types of glial cells involved in the regulation of neuroinflammation. Accumulating evidence suggests that the age-related proinflammatory activation of astrocytes and microglia is attenuated under DR. However, the molecular mechanisms underlying DR-mediated regulation of neuroinflammation are not well understood. Here, we review the current understanding of the effects of DR on neuroinflammation and suggest an underlying mechanistic link between DR and neuroinflammation that may provide novel insights into the role of DR in aging and age-associated brain disorders.
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Joly-Amado A, Gratuze M, Benderradji H, Vieau D, Buée L, Blum D. [Brain insulin signaling and Tau: impact for Alzheimer's disease and Tauopathies]. Med Sci (Paris) 2018; 34:929-935. [PMID: 30526837 DOI: 10.1051/medsci/2018238] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Alzheimer's disease (AD) is a neurodegenerative disease primarily characterized by cognitive deficits and neuropathological lesions such as Tau aggregates and amyloid plaques, but also associated with metabolic and neuroendocrine abnormalities, such as impairment of cerebral insulin. However, the origin of these symptoms and their relationship to pathology and cognitive disorders remain poorly understood. Insulin is a hormone involved in the control of peripheral and central energy homeostasis, and insulin-resistant state has been linked to increased risk of dementia. It is now well established that brain insulin resistance can exacerbate Tau lesions. Conversely, recent data indicate that Tau protein can modulate insulin signalling in the brain, creating a vicious circle precipitating the pathological AD. This review aims to highlight our current understanding of the role of insulin in the brain and its relationship with Tau protein in the context of AD and Tauopathies.
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Affiliation(s)
- Aurélie Joly-Amado
- Byrd Alzheimer's Institute, department of Molecular Pharmacology and Physiology, University of South Florida, Tampa, FL, États-Unis
| | - Maud Gratuze
- Centre de recherche du Centre hospitalier de l'université Laval de Québec, axe neurosciences, université Laval, Québec, QC, Canada
| | - Hamza Benderradji
- Univ. Lille, Inserm, CHU Lille, UMR-S 1172 - JPArc, « Alzheimer & Tauopathies », LabEx DISTALZ, F-59000 Lille, France
| | - Didier Vieau
- Univ. Lille, Inserm, CHU Lille, UMR-S 1172 - JPArc, « Alzheimer & Tauopathies », LabEx DISTALZ, F-59000 Lille, France
| | - Luc Buée
- Univ. Lille, Inserm, CHU Lille, UMR-S 1172 - JPArc, « Alzheimer & Tauopathies », LabEx DISTALZ, F-59000 Lille, France
| | - David Blum
- Univ. Lille, Inserm, CHU Lille, UMR-S 1172 - JPArc, « Alzheimer & Tauopathies », LabEx DISTALZ, F-59000 Lille, France
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Finneran DJ, Morgan D, Gordon MN, Nash KR. CNS-Wide over Expression of Fractalkine Improves Cognitive Functioning in a Tauopathy Model. J Neuroimmune Pharmacol 2019; 14:312-25. [PMID: 30499006 DOI: 10.1007/s11481-018-9822-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 11/06/2018] [Indexed: 12/18/2022]
Abstract
Accumulating evidence increasingly implicates regulation of neuroinflammation as a potential therapeutic target in Alzheimer’s disease and other neurodegenerative disorders. Fractalkine (FKN) is a unique chemokine that is expressed and secreted by neurons and reduces expression of pro-inflammatory genes. To further demonstrate the utility of agents that increase FKN signaling throughout the central nervous system as possible therapies for AD, we assessed the impact of soluble FKN (sFKN) over expression on cognition in tau depositing rTg450 mice after the onset of cognitive deficits. Using adeno-associated virus serotype 4, we infected cells lining the ventricular system with soluble FKN to increase FKN signaling over a larger fraction of the brain than achieved with intraparenchymal injections. We found that soluble FKN over expression by cells lining the ventricles significantly improved cognitive performance on the novel mouse recognition and radial arm water maze tasks. These benefits were achieved without detectable reductions in tau hyperphosphorylation, hippocampal atrophy, or microglial CD45 expression. Utilizing qPCR, we report a significant increase in Vegfa expression, indicating an increase in trophic support and possible neovascularization in AAV-sFKN-injected mice. To our knowledge, this is the first demonstration that FKN over expression can rescue cognitive function in a tau depositing mouse line. Regulating neuroinflammation is an attractive therapeutic target for Alzheimer’s disease. Microglial activation can not only drive pathology but also accelerate cognitive decline. The chemokine fractalkine regulates the microglial phenotype, increasing trophic support of neurons, and significantly improving cognitive functioning in the rTg4510 mouse model of tauopathy. ![]()
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Abstract
Neurodegenerative diseases are characterized by an irreversible and progressive loss of neuronal structure and function. While many alterations to normal cellular processes occur during neurodegeneration, a pathological accumulation of aggregated proteins constitutes a hallmark of several neurodegenerative disorders. Alzheimer's disease, specifically, is pathologically defined by the formation of amyloid plaques and tangles of hyperphosphorylated tau protein. Stress has emerged as an important factor in the development and progression of neurodegenerative diseases, including Alzheimer's. Very little is known, however, regarding the effects of stress on the mechanisms controlling abnormal protein aggregation and clearance. Chronic stress activates the hypothalamic-pituitary-adrenal (HPA) axis, causing an excessive secretion of glucocorticoids that are capable of impacting diverse physiological and cellular processes. The present review focuses on the influence of stress on a key feature of Alzheimer's disease pathology, emphasizing the relationship between tau phosphorylation and accumulation and its connection to HPA axis dysfunction.
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Affiliation(s)
- Jorge A Sierra-Fonseca
- Department of Biological Sciences and Border Biomedical Research Center, The University of Texas at El Paso, El Paso, TX, 79968, USA
| | - Kristin L Gosselink
- Department of Biological Sciences and Border Biomedical Research Center, The University of Texas at El Paso, El Paso, TX, 79968, USA
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Wang X, Smith K, Pearson M, Hughes A, Cosden ML, Marcus J, Hess JF, Savage MJ, Rosahl T, Smith SM, Schachter JB, Uslaner JM. Early intervention of tau pathology prevents behavioral changes in the rTg4510 mouse model of tauopathy. PLoS One 2018; 13:e0195486. [PMID: 29624602 PMCID: PMC5889169 DOI: 10.1371/journal.pone.0195486] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Accepted: 03/24/2018] [Indexed: 11/19/2022] Open
Abstract
Although tau pathology, behavioral deficits, and neuronal loss are observed in patients with tauopathies, the relationship between these endpoints has not been clearly established. Here we found that rTg4510 mice, which overexpress human mutant tau in the forebrain, develop progressive age-dependent increases in locomotor activity (LMA), which correlates with neurofibrillary tangle (NFT) pathology, hyperphosphorylated tau levels, and brain atrophy. To further clarify the relationship between these endpoints, we treated the rTg4510 mice with either doxycycline to reduce mutant tau expression or an O-GlcNAcase inhibitor Thiamet G, which has been shown to ameliorate tau pathology in animal models. We found that both doxycycline and Thiamet G treatments starting at 2 months of age prevented the progression of hyperactivity, slowed brain atrophy, and reduced brain hyperphosphorylated tau. In contrast, initiating doxycycline treatment at 4 months reduced neither brain hyperphosphorylated tau nor hyperactivity, further confirming the relationship between these measures. Collectively, our results demonstrate a unique behavioral phenotype in the rTg4510 mouse model of tauopathy that strongly correlates with disease progression, and that early interventions which reduce tau pathology ameliorate the progression of the locomotor dysfunction. These findings suggest that better understanding the relationship between locomotor deficits and tau pathology in the rTg4510 model may improve our understanding of the mechanisms underlying behavioral disturbances in patients with tauopathies.
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Affiliation(s)
- Xiaohai Wang
- Merck Research Laboratories, West Point, Pennsylvania, United States of America
- * E-mail:
| | - Karen Smith
- Merck Research Laboratories, West Point, Pennsylvania, United States of America
| | - Michelle Pearson
- Merck Research Laboratories, West Point, Pennsylvania, United States of America
| | - Anna Hughes
- Merck Research Laboratories, West Point, Pennsylvania, United States of America
| | - Mali L. Cosden
- Merck Research Laboratories, West Point, Pennsylvania, United States of America
| | - Jacob Marcus
- Merck Research Laboratories, West Point, Pennsylvania, United States of America
| | - J. Fred Hess
- Merck Research Laboratories, West Point, Pennsylvania, United States of America
| | - Mary J. Savage
- Merck Research Laboratories, West Point, Pennsylvania, United States of America
| | - Thomas Rosahl
- Merck Research Laboratories, West Point, Pennsylvania, United States of America
| | - Sean M. Smith
- Merck Research Laboratories, West Point, Pennsylvania, United States of America
| | - Joel B. Schachter
- Merck Research Laboratories, West Point, Pennsylvania, United States of America
| | - Jason M. Uslaner
- Merck Research Laboratories, West Point, Pennsylvania, United States of America
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Ahmed RM, Ke YD, Vucic S, Ittner LM, Seeley W, Hodges JR, Piguet O, Halliday G, Kiernan MC. Physiological changes in neurodegeneration - mechanistic insights and clinical utility. Nat Rev Neurol 2018; 14:259-71. [PMID: 29569624 DOI: 10.1038/nrneurol.2018.23] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The effects of neurodegenerative syndromes extend beyond cognitive function to involve key physiological processes, including eating and metabolism, autonomic nervous system function, sleep, and motor function. Changes in these physiological processes are present in several conditions, including frontotemporal dementia, amyotrophic lateral sclerosis, Alzheimer disease and the parkinsonian plus conditions. Key neural structures that mediate physiological changes across these conditions include neuroendocrine and hypothalamic pathways, reward pathways, motor systems and the autonomic nervous system. In this Review, we highlight the key changes in physiological processing in neurodegenerative syndromes and the similarities in these changes between different progressive neurodegenerative brain conditions. The changes and similarities between disorders might provide novel insights into the human neural correlates of physiological functioning. Given the evidence that physiological changes can arise early in the neurodegenerative process, these changes could provide biomarkers to aid in the early diagnosis of neurodegenerative diseases and in treatment trials.
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Shin BK, Kang S, Kim DS, Park S. Intermittent fasting protects against the deterioration of cognitive function, energy metabolism and dyslipidemia in Alzheimer's disease-induced estrogen deficient rats. Exp Biol Med (Maywood) 2018; 243:334-343. [PMID: 29307281 DOI: 10.1177/1535370217751610] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Intermittent fasting may be an effective intervention to protect against age-related metabolic disturbances, although it is still controversial. Here, we investigated the effect of intermittent fasting on the deterioration of the metabolism and cognitive functions in rats with estrogen deficiency and its mechanism was also explored. Ovariectomized rats were infused with β-amyloid (25-35; Alzheimer's disease) or β-amyloid (35-25, Non-Alzheimer's disease; normal cognitive function) into the hippocampus. Each group was randomly divided into two sub-groups: one with intermittent fasting and the other fed ad libitum: Alzheimer's disease-ad libitum, Alzheimer's disease-intermittent fasting, Non-Alzheimer's disease-ad libitum, and Non-Alzheimer's disease-intermittent fasting. Rats in the intermittent fasting groups had a restriction of food consumption to a 3-h period every day. Each group included 10 rats and all rats fed a high-fat diet for four weeks. Interestingly, Alzheimer's disease increased tail skin temperature more than Non-Alzheimer's disease and intermittent fasting prevented the increase. Alzheimer's disease reduced bone mineral density in the spine and femur compared to the Non-Alzheimer's disease, whereas bone mineral density in the hip and leg was reduced by intermittent fasting. Fat mass only in the abdomen was decreased by intermittent fasting. Intermittent fasting decreased food intake without changing energy expenditure. Alzheimer's disease increased glucose oxidation, whereas intermittent fasting elevated fat oxidation as a fuel source. Alzheimer's disease and intermittent fasting deteriorated insulin resistance in the fasting state but intermittent fasting decreased serum glucose levels after oral glucose challenge by increasing insulin secretion. Alzheimer's disease deteriorated short and spatial memory function compared to the Non-Alzheimer's disease, whereas intermittent fasting prevented memory loss in comparison to ad libitum. Unexpectedly, cortisol levels were increased by Alzheimer's disease but decreased by intermittent fasting. Intermittent fasting improved dyslipidemia and liver damage index compared to ad libitum. Alzheimer's disease lowered low-density lipoprotein cholesterol and serum triglyceride levels compared to Non-Alzheimer's disease. In conclusion, Alzheimer's disease impaired not only cognitive function but also disturbed energy, glucose, lipid, and bone metabolism in ovariectomized rats. Intermittent fasting protected against the deterioration of these metabolic parameters, but it exacerbated bone mineral density loss and insulin resistance at fasting in Alzheimer's disease-induced estrogen-deficient rats. Impact statement Intermittent fasting was evaluated for its effects on cognitive function and metabolic disturbances in a rat model of menopause and Alzheimer's disease. Intermittent fasting decreased skin temperature and fat mass, and improved glucose tolerance with decreasing food intake. Intermittent fasting also prevented memory loss: short-term and special memory loss. Therefore, intermittent fasting may prevent some of the metabolic pathologies associated with menopause and protect against age-related memory decline.
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Affiliation(s)
- Bae Kun Shin
- Department of Food & Nutrition, Obesity/Diabetes Center, Hoseo University, Asan 336-795, South Korea
| | - Suna Kang
- Department of Food & Nutrition, Obesity/Diabetes Center, Hoseo University, Asan 336-795, South Korea
| | - Da Sol Kim
- Department of Food & Nutrition, Obesity/Diabetes Center, Hoseo University, Asan 336-795, South Korea
| | - Sunmin Park
- Department of Food & Nutrition, Obesity/Diabetes Center, Hoseo University, Asan 336-795, South Korea
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Abstract
Alzheimer's disease (AD) is the most prevalent cause of dementia in the aging population worldwide. SIRT1 deacetylation of histones and transcription factors impinge on multiple neuronal and non-neuronal targets, and modulates stress response, energy metabolism and cellular senescence/death pathways. Collectively, SIRT1 activity could potentially affect multiple aspects of hippocampal and cortical neuron function and survival, thus modifying disease onset and progression. In this review, the known and potential mechanisms of action of SIRT1 with regard to AD, and its potential as a therapeutic target, are discussed.
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Gratuze M, Joly-Amado A, Vieau D, Buée L, Blum D. Mutual Relationship between Tau and Central Insulin Signalling: Consequences for AD and Tauopathies? Neuroendocrinology 2018; 107:181-195. [PMID: 29439247 DOI: 10.1159/000487641] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 02/13/2018] [Indexed: 12/30/2022]
Abstract
Alzheimer disease (AD) is a progressive neurodegenerative disorder mainly characterized by cognitive deficits and neuropathological changes such as Tau lesions and amyloid plaques, but also associated with non-cognitive symptomatology. Metabolic and neuroendocrine abnormalities, such as alterations in body weight, brain insulin impairments, and lower brain glucose metabolism, which often precede clinical diagnosis, have been extensively reported in AD patients. However, the origin of these symptoms and their relation to pathology and cognitive impairments remain misunderstood. Insulin is a hormone involved in the control of energy homeostasis both peripherally and centrally, and insulin-resistant state has been linked to increased risk of dementia. It is now well established that insulin resistance can exacerbate Tau lesions, mainly by disrupting the balance between Tau kinases and phosphatases. On the other hand, the emerging literature indicates that Tau protein can also modulate insulin signalling in the brain, thus creating a detrimental vicious circle. The following review will highlight our current understanding of the role of insulin in the brain and its relation to Tau protein in the context of AD and tauopathies. Considering that insulin signalling is prone to be pharmacologically targeted at multiple levels, it constitutes an appealing approach to improve both insulin brain sensitivity and mitigate brain pathology with expected positive outcome in terms of cognition.
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Affiliation(s)
- Maud Gratuze
- Centre de Recherche du Centre Hospitalier de l'Université Laval de Québec, Axe Neurosciences, Université Laval, Québec, Québec, Canada
| | - Aurélie Joly-Amado
- Byrd Alzheimer's Institute, Department of Molecular Pharmacology and Physiology, University of South Florida, Tampa, Florida, USA
| | - Didier Vieau
- Université de Lille, Inserm, CHU Lille, UMR-S 1172 - JPArc, "Alzheimer and Tauopathies,", Lille, France
| | - Luc Buée
- Université de Lille, Inserm, CHU Lille, UMR-S 1172 - JPArc, "Alzheimer and Tauopathies,", Lille, France
| | - David Blum
- Université de Lille, Inserm, CHU Lille, UMR-S 1172 - JPArc, "Alzheimer and Tauopathies,", Lille, France
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Gratuze M, Julien J, Morin F, Marette A, Planel E. Differential effects of voluntary treadmill exercise and caloric restriction on tau pathogenesis in a mouse model of Alzheimer's disease-like tau pathology fed with Western diet. Prog Neuropsychopharmacol Biol Psychiatry 2017; 79:452-461. [PMID: 28779908 DOI: 10.1016/j.pnpbp.2017.08.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 07/24/2017] [Accepted: 08/01/2017] [Indexed: 01/21/2023]
Abstract
BACKGROUND Tau is a microtubule-associated protein that becomes pathological when it undergoes hyperphosphorylation and aggregation as seen in Alzheimer's disease (AD). AD is mostly sporadic, with environmental, biological and/or genetic risks factors, interacting together to promote the disease. In the past decade, reports have suggested that obesity in midlife could be one of these risk factors. On the other hand, caloric restriction and physical exercise have been reported to reduce the incidence and outcome of obesity as well as AD. METHODS We evaluated the impact of voluntary physical exercise and caloric restriction on tau pathology during 2months in hTau mice under high caloric diet in order to evaluate if these strategies could prevent AD-like pathology in obese conditions. RESULTS We found no effects of obesity induced by Western diet on both Tau phosphorylation and aggregation compared to controls. However, exercise reduced tau phosphorylation while caloric restriction exacerbated its aggregation in the brains of obese hTau mice. We then examined the mechanisms underlying changes in tau phosphorylation and aggregation by exploring major tau kinases and phosphatases and key proteins involved in autophagy. However, there were no significant effects of voluntary exercise and caloric restriction on these proteins in hTau mice that could explain our results. CONCLUSION In this study, we report differential effects of voluntary treadmill exercise and caloric restriction on tau pathogenesis in our obese mice, namely beneficial effect of exercise on tau phosphorylation and deleterious effect of caloric restriction on tau aggregation. Our results suggest that lifestyle strategies used to reduce metabolic disorders and AD must be selected and studied carefully to avoid exacerbation of pathologies.
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Affiliation(s)
- Maud Gratuze
- Université Laval, Faculté de médecine, Département de Psychiatrie et Neurosciences, Québec, Canada; Centre de Recherche du CHU de Québec, Axe Neurosciences, Québec, Canada.
| | - Jacinthe Julien
- Centre de Recherche du CHU de Québec, Axe Neurosciences, Québec, Canada.
| | - Françoise Morin
- Centre de Recherche du CHU de Québec, Axe Neurosciences, Québec, Canada.
| | - André Marette
- Centre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec, Québec, Canada.
| | - Emmanuel Planel
- Université Laval, Faculté de médecine, Département de Psychiatrie et Neurosciences, Québec, Canada; Centre de Recherche du CHU de Québec, Axe Neurosciences, Québec, Canada.
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Wahl D, Coogan SCP, Solon-Biet SM, de Cabo R, Haran JB, Raubenheimer D, Cogger VC, Mattson MP, Simpson SJ, Le Couteur DG. Cognitive and behavioral evaluation of nutritional interventions in rodent models of brain aging and dementia. Clin Interv Aging 2017; 12:1419-1428. [PMID: 28932108 PMCID: PMC5598548 DOI: 10.2147/cia.s145247] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Evaluation of behavior and cognition in rodent models underpins mechanistic and interventional studies of brain aging and neurodegenerative diseases, especially dementia. Commonly used tests include Morris water maze, Barnes maze, object recognition, fear conditioning, radial arm water maze, and Y maze. Each of these tests reflects some aspects of human memory including episodic memory, recognition memory, semantic memory, spatial memory, and emotional memory. Although most interventional studies in rodent models of dementia have focused on pharmacological agents, there are an increasing number of studies that have evaluated nutritional interventions including caloric restriction, intermittent fasting, and manipulation of macronutrients. Dietary interventions have been shown to influence various cognitive and behavioral tests in rodents indicating that nutrition can influence brain aging and possibly neurodegeneration.
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Affiliation(s)
- Devin Wahl
- Charles Perkins Centre, University of Sydney, Sydney
- Aging and Alzheimers Institute, ANZAC Research Institute, Concord Clinical School/Sydney Medical School, Concord, NSW, Australia
| | - Sean CP Coogan
- Charles Perkins Centre, University of Sydney, Sydney
- Department of Renewable Resources, University of Alberta, Edmonton, AB, Canada
| | - Samantha M Solon-Biet
- Charles Perkins Centre, University of Sydney, Sydney
- Aging and Alzheimers Institute, ANZAC Research Institute, Concord Clinical School/Sydney Medical School, Concord, NSW, Australia
| | - Rafael de Cabo
- Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - James B Haran
- Philadelphia College of Osteopathic Medicine, Philadelphia, PA, USA
| | - David Raubenheimer
- Charles Perkins Centre, University of Sydney, Sydney
- Faculty of Veterinary Science
- School of Life and Environmental Sciences, University of Sydney, Sydney, NSW, Australia
| | - Victoria C Cogger
- Charles Perkins Centre, University of Sydney, Sydney
- Aging and Alzheimers Institute, ANZAC Research Institute, Concord Clinical School/Sydney Medical School, Concord, NSW, Australia
| | - Mark P Mattson
- Laboratory of Neurosciences, National Institute on Aging’s Intramural Research Program, National Institutes of Health, Baltimore, MD, USA
| | - Stephen J Simpson
- Charles Perkins Centre, University of Sydney, Sydney
- Aging and Alzheimers Institute, ANZAC Research Institute, Concord Clinical School/Sydney Medical School, Concord, NSW, Australia
- School of Life and Environmental Sciences, University of Sydney, Sydney, NSW, Australia
| | - David G Le Couteur
- Charles Perkins Centre, University of Sydney, Sydney
- Aging and Alzheimers Institute, ANZAC Research Institute, Concord Clinical School/Sydney Medical School, Concord, NSW, Australia
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Schroeder S, Joly-Amado A, Soliman A, Sengupta U, Kayed R, Gordon MN, Morgan D. Oligomeric tau-targeted immunotherapy in Tg4510 mice. Alzheimers Res Ther 2017; 9:46. [PMID: 28655349 PMCID: PMC5488475 DOI: 10.1186/s13195-017-0274-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 06/02/2017] [Indexed: 12/20/2022]
Abstract
BACKGROUND Finding ways to reverse or prevent the consequences of pathogenic tau in the brain is of considerable importance for treatment of Alzheimer's disease and other tauopathies. Immunotherapy against tau has shown promise in several mouse models. In particular, an antibody with selectivity for oligomeric forms of tau, tau oligomer monoclonal antibody (TOMA), has shown rescue of the behavioral phenotype in several murine models of tau deposition. METHODS In this study, we examined the capacity of TOMA to rescue the behavioral, histological, and neurochemical consequences of tau deposition in the aggressive Tg4510 model. We treated mice biweekly with 60 μg TOMA i.p. from 3.5 to 8 months of age. RESULTS Near the end of the treatment, we found that oligomeric tau was elevated in both the CSF and in plasma. Further, we could detect mouse IgG in Tg4510 mouse brain after TOMA treatment, but not after injection with mouse IgG1 as control. However, we did not find significant reductions in behavioral deficits or tau deposits by either histological or biochemical measurements. CONCLUSIONS These data suggest that there is some exposure of the Tg4510 mouse brain to TOMA, but it was inadequate to affect the phenotype in these mice at the doses used. These data are consistent with other observations that the rapidly depositing Tg4510 mouse is a challenging model in which to demonstrate efficacy of tau-lowering treatments compared to some other preclinical models of tau deposition/overexpression.
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Affiliation(s)
- Sulana Schroeder
- Byrd Alzheimer's Institute and Department of Molecular Pharmacology and Physiology, University of South Florida, 4001 E. Fletcher Ave, Tampa, FL, 33613, USA
| | - Aurelie Joly-Amado
- Byrd Alzheimer's Institute and Department of Molecular Pharmacology and Physiology, University of South Florida, 4001 E. Fletcher Ave, Tampa, FL, 33613, USA
| | - Ahlam Soliman
- Byrd Alzheimer's Institute and Department of Molecular Pharmacology and Physiology, University of South Florida, 4001 E. Fletcher Ave, Tampa, FL, 33613, USA
| | - Urmi Sengupta
- George P. and Cynthia Woods Mitchell Center for Neurodegenerative Diseases, Departments of Neurology, and Neuroscience and Cell Biology, University of Texas Medical Branch, Galveston, TX, 77555, USA
| | - Rakiz Kayed
- George P. and Cynthia Woods Mitchell Center for Neurodegenerative Diseases, Departments of Neurology, and Neuroscience and Cell Biology, University of Texas Medical Branch, Galveston, TX, 77555, USA
| | - Marcia N Gordon
- Byrd Alzheimer's Institute and Department of Molecular Pharmacology and Physiology, University of South Florida, 4001 E. Fletcher Ave, Tampa, FL, 33613, USA
| | - David Morgan
- Byrd Alzheimer's Institute and Department of Molecular Pharmacology and Physiology, University of South Florida, 4001 E. Fletcher Ave, Tampa, FL, 33613, USA. .,Department of Psychiatry and Behavioral Neuroscience, University of South Florida, Tampa, FL, 33612, USA.
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Helboe L, Egebjerg J, Barkholt P, Volbracht C. Early depletion of CA1 neurons and late neurodegeneration in a mouse tauopathy model. Brain Res 2017; 1665:22-35. [PMID: 28411086 DOI: 10.1016/j.brainres.2017.04.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 03/27/2017] [Accepted: 04/05/2017] [Indexed: 12/13/2022]
Abstract
Alzheimer's disease (AD) and tauopathies, such as frontotemporal dementia (FTD), are characterized by formation of neurofibrillary tangles consisting of hyperphosphorylated tau. Further neuropathological characteristics include synaptic loss, neurodegeneration and brain atrophy. Here, we explored the association between hyperphosphorylated tau species, brain atrophy, synaptic and neuronal loss in a mouse model (rTg4510) carrying the human tau (hTau) P301L mutation found in a familiar form of FTD. We established that hTau expression during the first 6 postnatal weeks was important for the progression of tauopathy in rTg4510 mice. Short term suppression of postnatal hTau expression delayed the onset of tau pathology by approximately 6months in this model. Early postnatal hTau expression was detrimental to CA1 neurons of the hippocampus and reduced neuronal numbers in 6-10weeks young rTg4510 mice prior to the appearance of hyperphosphorylated hTau species in the hippocampus. Hyperphosphorylated hTau species emerged from 10 to 24weeks of age and were associated with increased ubiquitin levels, gliosis, and brain atrophy and preceded the synaptic loss and CA1 neurodegeneration that occurred at 48weeks of age. We present two consequences of hTau expression in CA1 in rTg4510 mice: an early decrease in neuron number already established prior to the presence of hyperphosphorylated tau species and a later neurodegeneration dependent on hyperphosphorylated tau. Neurodegeneration and synaptic protein loss were completely prevented when hTau expression was suppressed prior to the appearance of hyperphosphorylated tau species. Suppression of hTau expression after the onset of tau hyperphosphorylation and tangle pathology initiated at 16weeks partially rescued neuronal loss at 48weeks of age, while a reduction of neurodegeneration was no longer possible when hTau suppression was introduced as late as at 24weeks of age. Our results in rTg4510 mice argue that it is promising to lower hyperphosphorylated tau species at early stages of tau pathology to protect from neurodegeneration.
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Affiliation(s)
- Lone Helboe
- Department of Neurodegeneration, H. Lundbeck A/S, Ottiliavej 9, DK-2500 Valby, Denmark
| | - Jan Egebjerg
- Department of Neurodegeneration, H. Lundbeck A/S, Ottiliavej 9, DK-2500 Valby, Denmark
| | | | - Christiane Volbracht
- Department of Neurodegeneration, H. Lundbeck A/S, Ottiliavej 9, DK-2500 Valby, Denmark.
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Fu Y, Chen Y, Li L, Wang Y, Kong X, Wang J. Food restriction affects Y‐maze spatial recognition memory in developing mice. Int J Dev Neurosci 2017; 60:8-15. [DOI: 10.1016/j.ijdevneu.2017.03.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 03/05/2017] [Accepted: 03/21/2017] [Indexed: 02/07/2023] Open
Affiliation(s)
- Yu Fu
- Medical FacultyKunming University of Science & TechnologyKunmingYunnan650500PR China
| | - Yanmei Chen
- Medical FacultyKunming University of Science & TechnologyKunmingYunnan650500PR China
| | - Liane Li
- Medical FacultyKunming University of Science & TechnologyKunmingYunnan650500PR China
| | - Yumei Wang
- Medical FacultyKunming University of Science & TechnologyKunmingYunnan650500PR China
| | - Xiangyang Kong
- Medical FacultyKunming University of Science & TechnologyKunmingYunnan650500PR China
| | - Jianhong Wang
- Kunming Primates Research Center, Kunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan650223PR China
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Wahl D, Cogger VC, Solon-Biet SM, Waern RVR, Gokarn R, Pulpitel T, Cabo RD, Mattson MP, Raubenheimer D, Simpson SJ, Le Couteur DG. Nutritional strategies to optimise cognitive function in the aging brain. Ageing Res Rev 2016; 31:80-92. [PMID: 27355990 PMCID: PMC5035589 DOI: 10.1016/j.arr.2016.06.006] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 06/17/2016] [Accepted: 06/23/2016] [Indexed: 12/15/2022]
Abstract
Old age is the greatest risk factor for most neurodegenerative diseases. During recent decades there have been major advances in understanding the biology of aging, and the development of nutritional interventions that delay aging including calorie restriction (CR) and intermittent fasting (IF), and chemicals that influence pathways linking nutrition and aging processes. CR influences brain aging in many animal models and recent findings suggest that dietary interventions can influence brain health and dementia in older humans. The role of individual macronutrients in brain aging also has been studied, with conflicting results about the effects of dietary protein and carbohydrates. A new approach known as the Geometric Framework (GF) has been used to unravel the complex interactions between macronutrients (protein, fat, and carbohydrate) and total energy on outcomes such as aging. These studies have shown that low-protein, high-carbohydrate (LPHC) diets are optimal for lifespan in ad libitum fed animals, while total calories have minimal effect once macronutrients are taken into account. One of the primary purposes of this review is to explore the notion that macronutrients may have a more translational potential than CR and IF in humans, and therefore there is a pressing need to use GF to study the impact of diet on brain aging. Furthermore, given the growing recognition of the role of aging biology in dementia, such studies might provide a new approach for dietary interventions for optimizing brain health and preventing dementia in older people.
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Affiliation(s)
- Devin Wahl
- Charles Perkins Centre, University of Sydney, Sydney 2006 Australia; Aging and Alzheimers Institute, ANZAC Research Institute, Concord Clinical School/Sydney Medical School, Concord, 2139 Australia
| | - Victoria C Cogger
- Charles Perkins Centre, University of Sydney, Sydney 2006 Australia; Aging and Alzheimers Institute, ANZAC Research Institute, Concord Clinical School/Sydney Medical School, Concord, 2139 Australia
| | - Samantha M Solon-Biet
- Charles Perkins Centre, University of Sydney, Sydney 2006 Australia; Aging and Alzheimers Institute, ANZAC Research Institute, Concord Clinical School/Sydney Medical School, Concord, 2139 Australia
| | - Rosilene V R Waern
- Charles Perkins Centre, University of Sydney, Sydney 2006 Australia; School of Life and Environmental Sciences, University of Sydney, Sydney 2006, Australia
| | - Rahul Gokarn
- Charles Perkins Centre, University of Sydney, Sydney 2006 Australia; Aging and Alzheimers Institute, ANZAC Research Institute, Concord Clinical School/Sydney Medical School, Concord, 2139 Australia
| | - Tamara Pulpitel
- Charles Perkins Centre, University of Sydney, Sydney 2006 Australia
| | - Rafael de Cabo
- Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Mark P Mattson
- Laboratory of Neurosciences, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - David Raubenheimer
- Charles Perkins Centre, University of Sydney, Sydney 2006 Australia; Faculty of Veterinary Science, University of Sydney, Sydney 2006, Australia; School of Life and Environmental Sciences, University of Sydney, Sydney 2006, Australia
| | - Stephen J Simpson
- Charles Perkins Centre, University of Sydney, Sydney 2006 Australia; School of Life and Environmental Sciences, University of Sydney, Sydney 2006, Australia
| | - David G Le Couteur
- Charles Perkins Centre, University of Sydney, Sydney 2006 Australia; Aging and Alzheimers Institute, ANZAC Research Institute, Concord Clinical School/Sydney Medical School, Concord, 2139 Australia.
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Jul P, Volbracht C, de Jong IEM, Helboe L, Elvang AB, Pedersen JT. Hyperactivity with Agitative-Like Behavior in a Mouse Tauopathy Model. J Alzheimers Dis 2016; 49:783-95. [PMID: 26519432 DOI: 10.3233/jad-150292] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Tauopathies, such as Alzheimer's disease (AD) and frontotemporal dementia (FTD), are characterized by formation of neurofibrillary tangles consisting of hyperphosphorylated tau. In addition to memory loss, patients experience behavioral symptoms such as agitation, aggression, depression, and insomnia. We explored the behavioral phenotype of a mouse model (rTg4510) carrying the human tau P301L mutation found in a familial form of FTD. We tested these mice in locomotor activity assays as well as in the Morris water maze to access spatial memory. In addition to cognitive impairments, rTg4510 mice exhibited a hyperactivity phenotype which correlated with progression of tau pathology and was dependent on P301L tau transgene expression. The hyperactive phenotype was characterized by significantly increased locomotor activity in a novel and in a simulated home cage environment together with a disturbed day/night cycle. The P301L-tau-dependent hyperactivity and agitative-like phenotype suggests that these mice may form a correlate to some of the behavioral disturbances observed in advanced AD and FTD.
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48
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Young MJ, Geiszler PC, Pardon MC. A novel role for the immunophilin FKBP52 in motor coordination. Behav Brain Res 2016; 313:97-110. [PMID: 27418439 DOI: 10.1016/j.bbr.2016.07.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2016] [Revised: 07/09/2016] [Accepted: 07/10/2016] [Indexed: 02/01/2023]
Abstract
FKBP52 is a ubiquitously distributed immunophilin that has been associated with wide-ranging functions in cell signalling as well as hormonal and stress responses. Amongst other pathways, it acts via complex-formation with corticosteroid receptors and has consequently been associated with stress- and age- related neurodegenerative disorders including Alzheimer's and Parkinson's diseases. Reduced levels of FKBP52 have been linked to tau dysfunction and amyloid beta toxicity in AD. However, FKBP52's role in cognition and neurodegenerative disorder-like phenotypes remain to be elucidated. The present study aimed therefore at investigating the cognitive and behavioural effects of reduced FKBP52 levels of genetically modified mice during ageing. Female and male FKBP52(+/+), FKBP52(+/-) and FKBP52(-/-) mice were compared at two-, ten-, twelve-, fifteen- and eighteen-months-of-age in a series of behavioural tests covering specie-specific behaviour, motor activity and coordination, fear-, spatial and recognition memory as well as curiosity and emotionality. Whilst cognitively unimpaired, FKBP52(+/-) mice performed worse on an accelerating rotating rod than FKBP52(+/+) littermates across all age-groups suggesting that FKBP52 is involved in processes controlling motor coordination. This deficit did not exacerbate with age but did worsen with repeated testing; pointing towards a role for FKBP52 in learning of tasks requiring motor coordination abilities. This study contributes to the knowledge base of FKBP52's implication in neurodegenerative diseases by demonstrating that FKBP52 by itself does not directly affect cognition and may therefore rather play an indirect, modulatory role in the functional pathology of AD, whereas it directly affects motor coordination, an early sign of neurodegenerative damages to the brain.
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Affiliation(s)
- Matthew J Young
- University of Nottingham Medical School, School of Life Sciences, Neuroscience group, Queen's Medical Centre, Nottingham NG7 2UH United Kingdom
| | - Philippine C Geiszler
- University of Nottingham Medical School, School of Life Sciences, Neuroscience group, Queen's Medical Centre, Nottingham NG7 2UH United Kingdom
| | - Marie-Christine Pardon
- University of Nottingham Medical School, School of Life Sciences, Neuroscience group, Queen's Medical Centre, Nottingham NG7 2UH United Kingdom.
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Van Cauwenberghe C, Vandendriessche C, Libert C, Vandenbroucke RE. Caloric restriction: beneficial effects on brain aging and Alzheimer’s disease. Mamm Genome 2016; 27:300-19. [DOI: 10.1007/s00335-016-9647-6] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2016] [Accepted: 05/16/2016] [Indexed: 01/25/2023]
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50
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Joly-Amado A, Serraneau KS, Brownlow M, Marín de Evsikova C, Speakman JR, Gordon MN, Morgan D. Metabolic changes over the course of aging in a mouse model of tau deposition. Neurobiol Aging 2016; 44:62-73. [PMID: 27318134 DOI: 10.1016/j.neurobiolaging.2016.04.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Revised: 04/01/2016] [Accepted: 04/18/2016] [Indexed: 12/21/2022]
Abstract
Weight loss and food intake disturbances that often precede cognitive decline and diagnosis have been extensively reported in Alzheimer's disease patients. Previously, we observed that transgenic mice overexpressing tau seemed to eat more food yet weigh less than nontransgenic littermates. Thus, the present longitudinal study measured the time course of changes in metabolic state over the lifespan of the tau depositing Tg4510 mouse model of tau deposition. Although body weight was comparable to nontransgenic littermates at 2 months of age, Tg4510 mice weighed less at older ages. This was accompanied by the accumulation of tau pathology and by dramatically increased activity in all phases of the 24-hour cycle. Resting metabolic rate was also increased at 7 months of age. At 12 months near the end of the Tg4510 lifespan, there was a wasting phase, with a considerable decrease of resting metabolic rate, although hyperactivity was maintained. These diverse changes in metabolism in a mouse model of tau deposition are discussed in the context of known changes in energy metabolism in Alzheimer's disease.
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Affiliation(s)
- Aurélie Joly-Amado
- Molecular Pharmacology and Physiology, University of South Florida, Tampa, FL, USA; Byrd Alzheimer's Institute, University of South Florida, Tampa, FL, USA.
| | - Karisa S Serraneau
- Molecular Pharmacology and Physiology, University of South Florida, Tampa, FL, USA; Byrd Alzheimer's Institute, University of South Florida, Tampa, FL, USA
| | - Milene Brownlow
- Molecular Pharmacology and Physiology, University of South Florida, Tampa, FL, USA; Byrd Alzheimer's Institute, University of South Florida, Tampa, FL, USA
| | | | - John R Speakman
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Chaoyang, Beijing, China
| | - Marcia N Gordon
- Molecular Pharmacology and Physiology, University of South Florida, Tampa, FL, USA; Byrd Alzheimer's Institute, University of South Florida, Tampa, FL, USA
| | - Dave Morgan
- Molecular Pharmacology and Physiology, University of South Florida, Tampa, FL, USA; Byrd Alzheimer's Institute, University of South Florida, Tampa, FL, USA
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