1
|
Fowler CF, Goerzen D, Devenyi GA, Madularu D, Chakravarty MM, Near J. OUP accepted manuscript. Brain Commun 2022; 4:fcac072. [PMID: 35434622 PMCID: PMC9007326 DOI: 10.1093/braincomms/fcac072] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 01/12/2022] [Accepted: 03/16/2022] [Indexed: 11/13/2022] Open
Affiliation(s)
- Caitlin F. Fowler
- Department of Biological and Biomedical Engineering, McGill University, Duff Medical Building, Montreal, Canada H3A 2B4
- Centre d’Imagerie Cérébrale, Douglas Mental Health University Institute, Verdun, Canada H4H 1R3
- Correspondence to: Caitlin F. Fowler, CIC Pavilion Office GH-2113 Douglas Mental Health University Institute 6875 Boulevard LaSalle Montreal, Canada H4H 1R3 E-mail:
| | - Dana Goerzen
- Centre d’Imagerie Cérébrale, Douglas Mental Health University Institute, Verdun, Canada H4H 1R3
| | - Gabriel A. Devenyi
- Centre d’Imagerie Cérébrale, Douglas Mental Health University Institute, Verdun, Canada H4H 1R3
- Department of Psychiatry, McGill University, Montreal, Canada H3A 1A1
| | - Dan Madularu
- Centre for Translational NeuroImaging, Northeastern University, Boston, USA
| | - M. Mallar Chakravarty
- Department of Biological and Biomedical Engineering, McGill University, Duff Medical Building, Montreal, Canada H3A 2B4
- Centre d’Imagerie Cérébrale, Douglas Mental Health University Institute, Verdun, Canada H4H 1R3
- Department of Psychiatry, McGill University, Montreal, Canada H3A 1A1
| | - Jamie Near
- Department of Biological and Biomedical Engineering, McGill University, Duff Medical Building, Montreal, Canada H3A 2B4
- Centre d’Imagerie Cérébrale, Douglas Mental Health University Institute, Verdun, Canada H4H 1R3
- Department of Psychiatry, McGill University, Montreal, Canada H3A 1A1
- Physical Studies Research Platform, Sunnybrook Research Institute, Toronto, Canada M4N 3M5
- Department of Medical Biophysics, University of Toronto, Toronto, Canada M5G 1L7
| |
Collapse
|
2
|
Effect of Allopregnanolone on Spatial Memory and Synaptic Proteins in Animal Model of Metabolic Syndrome. Brain Sci 2021; 11:brainsci11050644. [PMID: 34063474 PMCID: PMC8156862 DOI: 10.3390/brainsci11050644] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/04/2021] [Accepted: 05/11/2021] [Indexed: 11/26/2022] Open
Abstract
Metabolic Syndrome (MetS) is considered a common disorder, especially with a sedentary lifestyle and unhealthy food consumption. Cognitive impairment is one of the MetS consequences that worsens the quality of life of the patients. The study aimed to assess the therapeutic effect of the neurosteroid Allopregnalonone on spatial memory and, therefore, the expression of two synaptic plasticity markers in the hippocampus. Thirty-two male rats were divided into four groups: control groups, MetS, and MetS + Allopregnalone. Spatial memory has been evaluated by the Y-maze task and blood pressure measured by the rat tail method. Biochemical evaluation of serum glucose, insulin, lipid profile, and hippocampal expression of Synaptophysin and Associated Protein 43 (GAP-43) were performed for assessing Allopregnanolone on serum and hippocampal markers. Allopregnanolone therapy improved working spatial memory, hypertension, and biochemical markers measured in the serum and hippocampus.
Collapse
|
3
|
Fowler CF, Madularu D, Dehghani M, Devenyi GA, Near J. Longitudinal quantification of metabolites and macromolecules reveals age- and sex-related changes in the healthy Fischer 344 rat brain. Neurobiol Aging 2021; 101:109-122. [PMID: 33610061 DOI: 10.1016/j.neurobiolaging.2020.12.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 10/16/2020] [Accepted: 12/09/2020] [Indexed: 12/19/2022]
Abstract
Normal aging is associated with numerous biological changes, including altered brain metabolism and tissue chemistry. In vivo characterization of the neurochemical profile during aging is possible using magnetic resonance spectroscopy, a powerful noninvasive technique capable of quantifying brain metabolites involved in physiological processes that become impaired with age. A prominent macromolecular signal underlies those of brain metabolites and is particularly visible at high fields; parameterization of this signal into components improves quantification and expands the number of biomarkers comprising the neurochemical profile. The present study reports, for the first time, the simultaneous absolute quantification of brain metabolites and individual macromolecules in aging male and female Fischer 344 rats, measured longitudinally using proton magnetic resonance spectroscopy at 7 T. We identified age- and sex-related changes in neurochemistry, with prominent differences in metabolites implicated in anaerobic energy metabolism, antioxidant defenses, and neuroprotection, as well as numerous macromolecule changes. These findings contribute to our understanding of the neurobiological processes associated with healthy aging, critical for the proper identification and management of pathologic aging trajectories. This article is part of the Virtual Special Issue titled COGNITIVE NEUROSCIENCE OF HEALTHY AND PATHOLOGICAL AGING. The full issue can be found on ScienceDirect athttps://www.sciencedirect.com/journal/neurobiology-of-aging/special-issue/105379XPWJP.
Collapse
Affiliation(s)
- Caitlin F Fowler
- Department of Biological and Biomedical Engineering, McGill University, Montreal, Canada; Centre d'Imagerie Cérébrale, Douglas Mental Health University Institute, Verdun, Canada.
| | - Dan Madularu
- Centre d'Imagerie Cérébrale, Douglas Mental Health University Institute, Verdun, Canada; Department of Psychology, Center for Translational NeuroImaging, Northeastern University, Boston, MA, USA; Department of Psychiatry, McGill University, Montreal, Canada
| | - Masoumeh Dehghani
- Centre d'Imagerie Cérébrale, Douglas Mental Health University Institute, Verdun, Canada; Department of Psychiatry, McGill University, Montreal, Canada
| | - Gabriel A Devenyi
- Centre d'Imagerie Cérébrale, Douglas Mental Health University Institute, Verdun, Canada; Department of Psychiatry, McGill University, Montreal, Canada
| | - Jamie Near
- Department of Biological and Biomedical Engineering, McGill University, Montreal, Canada; Centre d'Imagerie Cérébrale, Douglas Mental Health University Institute, Verdun, Canada; Department of Psychiatry, McGill University, Montreal, Canada
| |
Collapse
|
4
|
Abstract
PURPOSE A mouse model of Alzheimer's disease demonstrates reduced beta-amyloid levels in the whole brain, associated with a gain of hippocampal memory, after drinking taurine-enriched water; this suggests that a taurine supplement could be a promising treatment for cognitive deficit. The objective of this study is to establish a methodology for quantifying taurine in the whole brain, taking advantage of the rapid development of non-invasive imaging techniques such as magnetic resonance imaging and magnetic resonance spectroscopy (MRS). PROCEDURES Single-voxel proton MRS was used to obtain quantifiable taurine peaks at 3.25 and 3.43 ppm. Quantitative MRS results were obtained in C57BL/6 mice of various age groups: 4, 11, 18, and 27 months old. RESULTS Compared with the 4-month-old group, taurine levels dropped significantly only at 27 months of age (p = 0.03). However, a significant decrease of N-acetyl-aspartate (NAA) in the brain was observed at both 18 and 27 months (p = 0.03 and p = 0.02). In addition, MRS-measured taurine level is highly correlated with hippocampal volume (r = 0.95). CONCLUSIONS These results suggest that decreased taurine levels in the brain could be used as biomarkers for hippocampal changes and are fully translatable into putative cognitive loss in both animal models and human studies without the ex vivo approach.
Collapse
|
5
|
Cohen J, Torres C. Astrocyte senescence: Evidence and significance. Aging Cell 2019; 18:e12937. [PMID: 30815970 PMCID: PMC6516680 DOI: 10.1111/acel.12937] [Citation(s) in RCA: 147] [Impact Index Per Article: 29.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 01/14/2019] [Accepted: 02/04/2019] [Indexed: 12/12/2022] Open
Abstract
Astrocytes participate in numerous aspects of central nervous system (CNS) physiology ranging from ion balance to metabolism, and disruption of their physiological roles can therefore be a contributor to CNS dysfunction and pathology. Cellular senescence, one of the mechanisms of aging, has been proposed as a central component of the age dependency of neurodegenerative disorders. Cumulative evidence supports an integral role of astrocytes in the initiation and progression of neurodegenerative disease and cognitive decline with aging. The loss of astrocyte function or the gain of neuroinflammatory function as a result of cellular senescence could have profound implications for the aging brain and neurodegenerative disorders, and we propose the term “astrosenescence” to describe this phenotype. This review summarizes the current evidence pertaining to astrocyte senescence from early evidence, in vitro characterization and relationship to age‐related neurodegenerative disease. We discuss the significance of targeting senescent astrocytes as a novel approach toward therapies for age‐associated neurodegenerative disease.
Collapse
Affiliation(s)
- Justin Cohen
- Department of Pathology and Laboratory Medicine Drexel University College of Medicine Philadelphia Pennsylvania
| | - Claudio Torres
- Department of Pathology and Laboratory Medicine Drexel University College of Medicine Philadelphia Pennsylvania
| |
Collapse
|
6
|
Korkmaz OT, Ay H, Aytan N, Carreras I, Kowall NW, Dedeoglu A, Tuncel N. Vasoactive Intestinal Peptide Decreases β-Amyloid Accumulation and Prevents Brain Atrophy in the 5xFAD Mouse Model of Alzheimer's Disease. J Mol Neurosci 2018; 68:389-396. [PMID: 30498985 DOI: 10.1007/s12031-018-1226-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 11/21/2018] [Indexed: 02/07/2023]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder characterized by extracellular deposits of fibrillary β-amyloid (Aβ) plaques in the brain that initiate an inflammatory process resulting in neurodegeneration. The neuronal loss associated with AD results in gross atrophy of affected regions causing a progressive loss of cognitive ability and memory function, ultimately leading to dementia. Growing evidence suggests that vasoactive intestinal peptide (VIP) could be beneficial for various neurodegenerative diseases, including AD. The study investigated the effects of VIP on 5xFAD, a transgenic mouse model of AD. Toward this aim, we used 20 5xFAD mice in two groups (n = 10 each), VIP-treated (25 ng/kg i.p. injection, three times per week) and saline-treated (the drug's vehicle) following the same administration regimen. Treatment started at 1 month of age and ended 2 months later. After 2 months of treatment, the mice were euthanized, their brains dissected out, and immunohistochemically stained for Aβ40 and Aβ42 on serial sections. Then, plaque analysis and stereological morphometric analysis were performed in different brain regions. Chronic VIP administration in 5xFAD mice significantly decreased the levels of Aβ40 and Aβ42 plaques in the subiculum compared to the saline treated 5xFAD mice. VIP treatment also significantly decreased Aβ40 and Aβ42 plaques in cortical areas and significantly increased the hippocampus/cerebrum and corpus callosum/cerebrum ratio but not the cerebral cortex/cerebrum ratio. In summary, we found that chronic administration of VIP significantly decreased Aβ plaques and preserved against atrophy for related brain regions in 5xFAD AD mice.
Collapse
Affiliation(s)
- Orhan Tansel Korkmaz
- Research and Development, VA Boston Healthcare System, Boston, MA, 02130, USA. .,Department of Neurology, Boston University School of Medicine, Boston, MA, 02118, USA. .,Department of Physiology, Faculty of Medicine, Eskisehir Osmangazi University, 26480, Eskisehir, Turkey. .,Faculty of Medicine, Department of Physiology, Eskisehir Osmangazi University, Odunpazari, 26040, Eskisehir, Turkey.
| | - Hakan Ay
- Department of Anatomy, Faculty of Medicine, Eskisehir Osmangazi University, 26040, Eskisehir, Turkey
| | - Nurgul Aytan
- Research and Development, VA Boston Healthcare System, Boston, MA, 02130, USA.,Department of Neurology, Boston University School of Medicine, Boston, MA, 02118, USA
| | - Isabel Carreras
- Research and Development, VA Boston Healthcare System, Boston, MA, 02130, USA.,Department of Neurology, Boston University School of Medicine, Boston, MA, 02118, USA.,Department of Biochemistry, Boston University School of Medicine, Boston, MA, 02118, USA
| | - Neil W Kowall
- Research and Development, VA Boston Healthcare System, Boston, MA, 02130, USA.,Department of Neurology, Boston University School of Medicine, Boston, MA, 02118, USA
| | - Alpaslan Dedeoglu
- Research and Development, VA Boston Healthcare System, Boston, MA, 02130, USA.,Department of Neurology, Boston University School of Medicine, Boston, MA, 02118, USA.,Department of Radiology, MGH and Harvard Medical School, Boston, MA, 02114, USA
| | - Nese Tuncel
- Department of Physiology, Faculty of Medicine, Eskisehir Osmangazi University, 26480, Eskisehir, Turkey
| |
Collapse
|
7
|
Hui CW, Song X, Ma F, Shen X, Herrup K. Ibuprofen prevents progression of ataxia telangiectasia symptoms in ATM-deficient mice. J Neuroinflammation 2018; 15:308. [PMID: 30400801 PMCID: PMC6220455 DOI: 10.1186/s12974-018-1338-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Accepted: 10/18/2018] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Inflammation plays a critical role in accelerating the progression of neurodegenerative diseases, such as Alzheimer's disease (AD) and ataxia telangiectasia (A-T). In A-T mouse models, LPS-induced neuroinflammation advances the degenerative changes found in cerebellar Purkinje neurons both in vivo and in vitro. In the current study, we ask whether ibuprofen, a non-steroidal anti-inflammatory drug (NSAID), can have the opposite effect and delay the symptoms of the disease. METHODS We tested the beneficial effects of ibuprofen in both in vitro and in vivo models. Conditioned medium from LPS stimulated primary microglia (LM) applied to cultures of dissociated cortical neurons leads to numerous degenerative changes. Pretreatment of the neurons with ibuprofen, however, blocked this damage. Systemic injection of LPS into either adult wild-type or adult Atm-/- mice produced an immune challenge that triggered profound behavioral, biochemical, and histological effects. We used a 2-week ibuprofen pretreatment regimen to investigate whether these LPS effects could be blocked. We also treated young presymptomatic Atm-/- mice to determine if ibuprofen could delay the appearance of symptoms. RESULTS Adding ibuprofen directly to neuronal cultures significantly reduced LM-induced degeneration. Curiously, adding ibuprofen to the microglia cultures before the LPS challenge had little effect, thus implying a direct effect of the NSAID on the neuronal cultures. In vivo administration of ibuprofen to Atm-/- animals before a systemic LPS immune challenge suppressed cytological damage. The ibuprofen effects were widespread as microglial activation, p38 phosphorylation, DNA damage, and neuronal cell cycle reentry were all reduced. Unfortunately, ibuprofen only slightly improved the LPS-induced behavioral deficits. Yet, while the behavioral symptoms could not be reversed once they were established in adult Atm-/- animals, administration of ibuprofen to young mutant pups prevented their symptoms from appearing. CONCLUSION Inflammatory processes impact the normal progression of A-T implying that modulation of the immune system can have therapeutic benefit for both the behavioral and cellular symptoms of this neurodegenerative disease.
Collapse
Affiliation(s)
- Chin Wai Hui
- Division of Life Science and State Key Laboratory of Molecular Neurobiology, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Xuan Song
- Division of Life Science and State Key Laboratory of Molecular Neurobiology, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Fulin Ma
- Division of Life Science and State Key Laboratory of Molecular Neurobiology, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Xuting Shen
- Division of Life Science and State Key Laboratory of Molecular Neurobiology, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
- Present address: School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong
| | - Karl Herrup
- Division of Life Science and State Key Laboratory of Molecular Neurobiology, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| |
Collapse
|
8
|
Song Y, Chai T, Yin Z, Zhang X, Zhang W, Qian Y, Qiu J. Stereoselective effects of ibuprofen in adult zebrafish (Danio rerio) using UPLC-TOF/MS-based metabolomics. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 241:730-739. [PMID: 29908497 DOI: 10.1016/j.envpol.2018.06.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 06/02/2018] [Accepted: 06/03/2018] [Indexed: 06/08/2023]
Abstract
Ibuprofen (IBU), as a commonly used non-steroidal anti-inflammatory drug (NSAID) and pharmaceutical and personal care product (PPCP), is frequently prescribed by doctors to relieve pain. It is widely released into environmental water and soil in the form of chiral enantiomers by the urination and defecation of humans or animals and by sewage discharge from wastewater treatment plants. This study focused on the alteration of metabolism in the adult zebrafish (Danio rerio) brain after exposure to R-(-)-/S-(+)-/rac-IBU at 5 μg L-1 for 28 days. A total of 45 potential biomarkers and related pathways, including amino acids and their derivatives, purine and its derivatives, nucleotides and other metabolites, were observed with untargeted metabolomics. To validate the metabolic disorders induced by IBU, 22 amino acids and 3 antioxidant enzymes were selected to be quantitated and determined using targeted metabolomics and enzyme assay. Stereoselective changes were observed in the 45 identified biomarkers from the untargeted metabolomics analysis. The 22 amino acids quantitated in targeted metabolomics and 3 antioxidant enzymes determined in enzyme assay also showed stereoselective changes after R-(-)-/S-(+)-/rac-IBU exposure. Results showed that even at a low concentration of R-(-)-/S-(+)-/rac-IBU, disorders in metabolism and antioxidant defense systems were still induced with stereoselectivity. Our study may enable a better understanding of the risks of chiral PPCPs in aquatic organisms in the environment.
Collapse
Affiliation(s)
- Yue Song
- Institute of Quality Standards and Testing Technology for Agro-Products, Key Laboratory of Agro-product Quality and Safety, Chinese Academy of Agricultural Sciences, Key Laboratory of Agri-food Quality and Safety, Ministry of Agriculture, Beijing 100081, China
| | - Tingting Chai
- Institute of Quality Standards and Testing Technology for Agro-Products, Key Laboratory of Agro-product Quality and Safety, Chinese Academy of Agricultural Sciences, Key Laboratory of Agri-food Quality and Safety, Ministry of Agriculture, Beijing 100081, China; College of Agriculture and Food Science, Key Laboratory of Quality Improvement of Agricultural Products of Zhejiang Province, Zhejiang A & F University, Lin'an, Zhejiang 311300, China
| | - Zhiqiang Yin
- Institute of Quality Standards and Testing Technology for Agro-Products, Key Laboratory of Agro-product Quality and Safety, Chinese Academy of Agricultural Sciences, Key Laboratory of Agri-food Quality and Safety, Ministry of Agriculture, Beijing 100081, China
| | - Xining Zhang
- Institute of Quality Standards and Testing Technology for Agro-Products, Key Laboratory of Agro-product Quality and Safety, Chinese Academy of Agricultural Sciences, Key Laboratory of Agri-food Quality and Safety, Ministry of Agriculture, Beijing 100081, China
| | - Wei Zhang
- Institute of Quality Standards and Testing Technology for Agro-Products, Key Laboratory of Agro-product Quality and Safety, Chinese Academy of Agricultural Sciences, Key Laboratory of Agri-food Quality and Safety, Ministry of Agriculture, Beijing 100081, China
| | - Yongzhong Qian
- Institute of Quality Standards and Testing Technology for Agro-Products, Key Laboratory of Agro-product Quality and Safety, Chinese Academy of Agricultural Sciences, Key Laboratory of Agri-food Quality and Safety, Ministry of Agriculture, Beijing 100081, China
| | - Jing Qiu
- Institute of Quality Standards and Testing Technology for Agro-Products, Key Laboratory of Agro-product Quality and Safety, Chinese Academy of Agricultural Sciences, Key Laboratory of Agri-food Quality and Safety, Ministry of Agriculture, Beijing 100081, China.
| |
Collapse
|
9
|
Hassan M, Abbas Q, Seo SY, Shahzadi S, Ashwal HA, Zaki N, Iqbal Z, Moustafa AA. Computational modeling and biomarker studies of pharmacological treatment of Alzheimer's disease (Review). Mol Med Rep 2018; 18:639-655. [PMID: 29845262 PMCID: PMC6059694 DOI: 10.3892/mmr.2018.9044] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Accepted: 07/05/2017] [Indexed: 12/31/2022] Open
Abstract
Alzheimer's disease (AD) is a complex and multifactorial disease. In order to understand the genetic influence in the progression of AD, and to identify novel pharmaceutical agents and their associated targets, the present study discusses computational modeling and biomarker evaluation approaches. Based on mechanistic signaling pathway approaches, various computational models, including biochemical and morphological models, are discussed to explore the strategies that may be used to target AD treatment. Different biomarkers are interpreted on the basis of morphological and functional features of amyloid β plaques and unstable microtubule‑associated tau protein, which is involved in neurodegeneration. Furthermore, imaging and cerebrospinal fluids are also considered to be key methods in the identification of novel markers for AD. In conclusion, the present study reviews various biochemical and morphological computational models and biomarkers to interpret novel targets and agonists for the treatment of AD. This review also highlights several therapeutic targets and their associated signaling pathways in AD, which may have potential to be used in the development of novel pharmacological agents for the treatment of patients with AD. Computational modeling approaches may aid the quest for the development of AD treatments with enhanced therapeutic efficacy and reduced toxicity.
Collapse
Affiliation(s)
- Mubashir Hassan
- Department of Biology, College of Natural Sciences, Kongju National University, Gongju, Chungcheongnam 32588, Republic of Korea
- Institute of Molecular Science and Bioinformatics, Dyal Singh Trust Library, Lahore 54000, Pakistan
| | - Qamar Abbas
- Department of Physiology, University of Sindh, Jamshoro 76080, Pakistan
| | - Sung-Yum Seo
- Department of Biology, College of Natural Sciences, Kongju National University, Gongju, Chungcheongnam 32588, Republic of Korea
| | - Saba Shahzadi
- Institute of Molecular Science and Bioinformatics, Dyal Singh Trust Library, Lahore 54000, Pakistan
- Department of Bioinformatics, Virtual University Davis Road Campus, Lahore 54000, Pakistan
| | - Hany Al Ashwal
- College of Information Technology, United Arab Emirates University, Al-Ain 15551, United Arab Emirates
| | - Nazar Zaki
- College of Information Technology, United Arab Emirates University, Al-Ain 15551, United Arab Emirates
| | - Zeeshan Iqbal
- Institute of Molecular Science and Bioinformatics, Dyal Singh Trust Library, Lahore 54000, Pakistan
| | - Ahmed A. Moustafa
- School of Social Sciences and Psychology, Western Sydney University, Sydney, NSW 2751, Australia
- MARCS Institute for Brain, Behavior and Development, Western Sydney University, Sydney, NSW 2751, Australia
| |
Collapse
|
10
|
Kong V, Devenyi GA, Gallino D, Ayranci G, Germann J, Rollins C, Chakravarty MM. Early-in-life neuroanatomical and behavioural trajectories in a triple transgenic model of Alzheimer’s disease. Brain Struct Funct 2018; 223:3365-3382. [DOI: 10.1007/s00429-018-1691-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 05/26/2018] [Indexed: 11/29/2022]
|
11
|
Chaney A, Bauer M, Bochicchio D, Smigova A, Kassiou M, Davies KE, Williams SR, Boutin H. Longitudinal investigation of neuroinflammation and metabolite profiles in the APP swe ×PS1 Δe9 transgenic mouse model of Alzheimer's disease. J Neurochem 2017; 144:318-335. [PMID: 29124761 PMCID: PMC5846890 DOI: 10.1111/jnc.14251] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 10/03/2017] [Accepted: 10/29/2017] [Indexed: 12/11/2022]
Abstract
There is increasing evidence linking neuroinflammation to many neurological disorders including Alzheimer's disease (AD); however, its exact contribution to disease manifestation and/or progression is poorly understood. Therefore, there is a need to investigate neuroinflammation in both health and disease. Here, we investigate cognitive decline, neuroinflammatory and other pathophysiological changes in the APPswe×PS1Δe9 transgenic mouse model of AD. Transgenic (TG) mice were compared to C57BL/6 wild type (WT) mice at 6, 12 and 18 months of age. Neuroinflammation was investigated by [18F]DPA‐714 positron emission tomography and myo‐inositol levels using 1H magnetic resonance spectroscopy (MRS) in vivo. Neuronal and cellular dysfunction was investigated by looking at N‐acetylaspartate (NAA), choline‐containing compounds, taurine and glutamate also using MRS. Cognitive decline was first observed at 12 m of age in the TG mice as assessed by working memory tests . A significant increase in [18F]DPA‐714 uptake was seen in the hippocampus and cortex of 18 m‐old TG mice when compared to age‐matched WT mice and 6 m‐old TG mice. No overall effect of gene was seen on metabolite levels; however, a significant reduction in NAA was observed in 18 m‐old TG mice when compared to WT. In addition, age resulted in a decrease in glutamate and an increase in choline levels. Therefore, we can conclude that increased neuroinflammation and cognitive decline are observed in TG animals, whereas NAA alterations occurring with age are exacerbated in the TG mice. These results support the role of neuroinflammation and metabolite alteration in AD and in ageing. ![]()
Collapse
Affiliation(s)
- Aisling Chaney
- Centre for Imaging Science, Faculty of Biology, Medicine and Health, Manchester Academic Health Sciences Centre University of Manchester, Manchester, UK.,Wolfson Molecular Imaging Centre, Faculty of Biology, Medicine and Health and Manchester Academic Health Sciences Centre, University of Manchester, Manchester, UK
| | - Martin Bauer
- Department of Clinical Pharmacology, Medical University Vienna, Vienna, Austria
| | - Daniela Bochicchio
- Wolfson Molecular Imaging Centre, Faculty of Biology, Medicine and Health and Manchester Academic Health Sciences Centre, University of Manchester, Manchester, UK
| | - Alison Smigova
- Centre for Imaging Science, Faculty of Biology, Medicine and Health, Manchester Academic Health Sciences Centre University of Manchester, Manchester, UK.,Wolfson Molecular Imaging Centre, Faculty of Biology, Medicine and Health and Manchester Academic Health Sciences Centre, University of Manchester, Manchester, UK
| | | | - Karen E Davies
- Centre for Imaging Science, Faculty of Biology, Medicine and Health, Manchester Academic Health Sciences Centre University of Manchester, Manchester, UK
| | - Steve R Williams
- Centre for Imaging Science, Faculty of Biology, Medicine and Health, Manchester Academic Health Sciences Centre University of Manchester, Manchester, UK
| | - Herve Boutin
- Centre for Imaging Science, Faculty of Biology, Medicine and Health, Manchester Academic Health Sciences Centre University of Manchester, Manchester, UK.,Wolfson Molecular Imaging Centre, Faculty of Biology, Medicine and Health and Manchester Academic Health Sciences Centre, University of Manchester, Manchester, UK
| |
Collapse
|
12
|
Treviño S, Vázquez-Roque RA, López-López G, Perez-Cruz C, Moran C, Handal-Silva A, González-Vergara E, Flores G, Guevara J, Díaz A. Metabolic syndrome causes recognition impairments and reduced hippocampal neuronal plasticity in rats. J Chem Neuroanat 2017; 82:65-75. [PMID: 28219715 DOI: 10.1016/j.jchemneu.2017.02.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 01/17/2017] [Accepted: 02/15/2017] [Indexed: 11/13/2022]
Abstract
Metabolic syndrome (MS) is a serious public health problem, which can promote neuronal alterations in cognitive regions related to learning and memory processes, such as the hippocampus. However, up to now there has been information of a regional segregation of this damage. In this study, we evaluate the MS effect on the neuronal morphology of the hippocampus. Our results demonstrate that 90days of a high-calorie diet alters the metabolic energy markers causing the MS and causes memory impairments, evaluated by the recognition of novel objects test (NORT). In addition, MS animals showed significant differences in dendritic order, total dendritic length and density of dendritic spines in CA1, CA3 and the dentate gyrus (DG) of the hippocampal area, compared with rats fed with a normocaloric diet (vehicle group). Furthermore, the immunoreactivity to synaptophysin (Syp) decreased in the hippocampus of the MS animals compared to the vehicle group. These results indicate that metabolic alterations induced by the MS affect hippocampal plasticity and hippocampal dependent memory processes.
Collapse
Affiliation(s)
- Samuel Treviño
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Pue., Mexico
| | - Rubén A Vázquez-Roque
- Instituto de Fisiología, Benemérita Universidad Autónoma de Puebla, Puebla, Pue., Mexico
| | - Gustavo López-López
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Pue., Mexico
| | - Claudia Perez-Cruz
- Departamento de Farmacología, Centro de Investigaciones y Estudios Avanzados, CINVESTAV, Ciudad de México, Mexico
| | - Carolina Moran
- Departamento de Biología y Toxicología de la Reproducción, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, Pue., Mexico
| | - Anabella Handal-Silva
- Departamento de Biología y Toxicología de la Reproducción, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, Pue., Mexico
| | - Enrique González-Vergara
- Centro de Química, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, Pue., Mexico
| | - Gonzalo Flores
- Instituto de Fisiología, Benemérita Universidad Autónoma de Puebla, Puebla, Pue., Mexico
| | - Jorge Guevara
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Alfonso Díaz
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Pue., Mexico.
| |
Collapse
|
13
|
Lam V, Hackett M, Takechi R. Antioxidants and Dementia Risk: Consideration through a Cerebrovascular Perspective. Nutrients 2016; 8:nu8120828. [PMID: 27999412 PMCID: PMC5188481 DOI: 10.3390/nu8120828] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Revised: 12/16/2016] [Accepted: 12/16/2016] [Indexed: 12/16/2022] Open
Abstract
A number of natural and chemical compounds that exert anti-oxidative properties are demonstrated to be beneficial for brain and cognitive function, and some are reported to reduce the risk of dementia. However, the detailed mechanisms by which those anti-oxidative compounds show positive effects on cognition and dementia are still unclear. An emerging body of evidence suggests that the integrity of the cerebrovascular blood-brain barrier (BBB) is centrally involved in the onset and progression of cognitive impairment and dementia. While recent studies revealed that some anti-oxidative agents appear to be protective against the disruption of BBB integrity and structure, few studies considered the neuroprotective effects of antioxidants in the context of cerebrovascular integrity. Therefore, in this review, we examine the mechanistic insights of antioxidants as a pleiotropic agent for cognitive impairment and dementia through a cerebrovascular axis by primarily focusing on the current available data from physiological studies. Conclusively, there is a compelling body of evidence that suggest antioxidants may prevent cognitive decline and dementia by protecting the integrity and function of BBB and, indeed, further studies are needed to directly examine these effects in addition to underlying molecular mechanisms.
Collapse
Affiliation(s)
- Virginie Lam
- Curtin Health Innovation Research Institute, Curtin University, Perth WA 6845, Australia.
- School of Public Health, Faculty of Health Sciences, Curtin University, Perth WA 6845, Australia.
| | - Mark Hackett
- Curtin Health Innovation Research Institute, Curtin University, Perth WA 6845, Australia.
- Department of Chemistry, Faculty of Science and Engineering, Curtin University, Perth WA 6845, Australia.
| | - Ryusuke Takechi
- Curtin Health Innovation Research Institute, Curtin University, Perth WA 6845, Australia.
- School of Public Health, Faculty of Health Sciences, Curtin University, Perth WA 6845, Australia.
| |
Collapse
|
14
|
Qosa H, Mohamed LA, Al Rihani SB, Batarseh YS, Duong QV, Keller JN, Kaddoumi A. High-Throughput Screening for Identification of Blood-Brain Barrier Integrity Enhancers: A Drug Repurposing Opportunity to Rectify Vascular Amyloid Toxicity. J Alzheimers Dis 2016; 53:1499-516. [PMID: 27392852 PMCID: PMC4992409 DOI: 10.3233/jad-151179] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The blood-brain barrier (BBB) is a dynamic interface that maintains brain homeostasis and protects it from free entry of chemicals, toxins, and drugs. The barrier function of the BBB is maintained mainly by capillary endothelial cells that physically separate brain from blood. Several neurological diseases, such as Alzheimer's disease (AD), are known to disrupt BBB integrity. In this study, a high-throughput screening (HTS) was developed to identify drugs that rectify/protect BBB integrity from vascular amyloid toxicity associated with AD progression. Assessing Lucifer Yellow permeation across in-vitro BBB model composed from mouse brain endothelial cells (bEnd3) grown on 96-well plate inserts was used to screen 1280 compounds of Sigma LOPAC®1280 library for modulators of bEnd3 monolayer integrity. HTS identified 62 compounds as disruptors, and 50 compounds as enhancers of the endothelial barrier integrity. From these 50 enhancers, 7 FDA approved drugs were identified with EC50 values ranging from 0.76-4.56 μM. Of these 7 drugs, 5 were able to protect bEnd3-based BBB model integrity against amyloid toxicity. Furthermore, to test the translational potential to humans, the 7 drugs were tested for their ability to rectify the disruptive effect of Aβ in the human endothelial cell line hCMEC/D3. Only 3 (etodolac, granisetron, and beclomethasone) out of the 5 effective drugs in the bEnd3-based BBB model demonstrated a promising effect to protect the hCMEC/D3-based BBB model integrity. These drugs are compelling candidates for repurposing as therapeutic agents that could rectify dysfunctional BBB associated with AD.
Collapse
Affiliation(s)
- Hisham Qosa
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe, Monroe, LA, USA
| | - Loqman A. Mohamed
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe, Monroe, LA, USA
| | - Sweilem B. Al Rihani
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe, Monroe, LA, USA
| | - Yazan S. Batarseh
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe, Monroe, LA, USA
| | - Quoc-Viet Duong
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe, Monroe, LA, USA
| | - Jeffrey N. Keller
- Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA, USA
| | - Amal Kaddoumi
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe, Monroe, LA, USA
| |
Collapse
|
15
|
Rymut SM, Kampman CM, Corey DA, Endres T, Cotton CU, Kelley TJ. Ibuprofen regulation of microtubule dynamics in cystic fibrosis epithelial cells. Am J Physiol Lung Cell Mol Physiol 2016; 311:L317-27. [PMID: 27317686 DOI: 10.1152/ajplung.00126.2016] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 06/12/2016] [Indexed: 11/22/2022] Open
Abstract
High-dose ibuprofen, an effective anti-inflammatory therapy for the treatment of cystic fibrosis (CF), has been shown to preserve lung function in a pediatric population. Despite its efficacy, few patients receive ibuprofen treatment due to potential renal and gastrointestinal toxicity. The mechanism of ibuprofen efficacy is also unclear. We have previously demonstrated that CF microtubules are slower to reform after depolymerization compared with respective wild-type controls. Slower microtubule dynamics in CF cells are responsible for impaired intracellular transport and are related to inflammatory signaling. Here, it is identified that high-dose ibuprofen treatment in both CF cell models and primary CF nasal epithelial cells restores microtubule reformation rates to wild-type levels, as well as induce extension of microtubules to the cell periphery. Ibuprofen treatment also restores microtubule-dependent intracellular transport monitored by measuring intracellular cholesterol transport. These effects are specific to ibuprofen as other cyclooxygenase inhibitors have no effect on these measures. Effects of ibuprofen are mimicked by stimulation of AMPK and blocked by the AMPK inhibitor compound C. We conclude that high-dose ibuprofen treatment enhances microtubule formation in CF cells likely through an AMPK-related pathway. These findings define a potential mechanism to explain the efficacy of ibuprofen therapy in CF.
Collapse
Affiliation(s)
- Sharon M Rymut
- Departments of Pediatrics, Case Western Reserve University, Cleveland, Ohio
| | - Claire M Kampman
- Departments of Pediatrics, Case Western Reserve University, Cleveland, Ohio
| | - Deborah A Corey
- Departments of Pediatrics, Case Western Reserve University, Cleveland, Ohio
| | - Tori Endres
- Departments of Pediatrics, Case Western Reserve University, Cleveland, Ohio
| | - Calvin U Cotton
- Departments of Pediatrics, Case Western Reserve University, Cleveland, Ohio
| | - Thomas J Kelley
- Departments of Pediatrics, Case Western Reserve University, Cleveland, Ohio
| |
Collapse
|
16
|
Fingolimod modulates multiple neuroinflammatory markers in a mouse model of Alzheimer's disease. Sci Rep 2016; 6:24939. [PMID: 27117087 PMCID: PMC4847010 DOI: 10.1038/srep24939] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 03/29/2016] [Indexed: 12/31/2022] Open
Abstract
Sphingosine 1-phosphate (SP1) receptors may be attractive targets for modulation of inflammatory processes in neurodegenerative diseases. Recently fingolimod, a functional S1P1 receptor antagonist, was introduced for treatment of multiple sclerosis. We postulated that anti-inflammatory mechanisms of fingolimod might also be protective in Alzheimer’s disease (AD). Therefore, we treated a mouse model of AD, the 5xFAD model, with two doses of fingolimod (1 and 5 mg/kg/day) and measured the response of numerous markers of Aβ pathology as well as inflammatory markers and neurochemistry using biochemical, immunohistochemistry and high resolution magic angle spinning magnetic resonance spectroscopy (MRS). In mice at 3 months of age, we found that fingolimod decreased plaque density as well as soluble plus insoluble Aβ measured by ELISA. Fingolimod also decreased GFAP staining and the number of activated microglia. Taurine has been demonstrated to play a role as an endogenous anti-inflammatory molecule. Taurine levels, measured using MRS, showed a very strong inverse correlation with GFAP levels and ELISA measurements of Aβ, but not with plaque density or activated microglia levels. MRS also showed an effect of fingolimod on glutamate levels. Fingolimod at 1 mg/kg/day provided better neuroprotection than 5 mg/kg/day. Together, these data suggest a potential therapeutic role for fingolimod in AD.
Collapse
|
17
|
Woodling NS, Andreasson KI. Untangling the Web: Toxic and Protective Effects of Neuroinflammation and PGE2 Signaling in Alzheimer's Disease. ACS Chem Neurosci 2016; 7:454-63. [PMID: 26979823 DOI: 10.1021/acschemneuro.6b00016] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
The neuroinflammatory response has received increasing attention as a key factor in the pathogenesis of Alzheimer's disease (AD). Microglia, the innate immune cells and resident phagocytes of the brain, respond to accumulating Aβ peptides by generating a nonresolving inflammatory response. While this response can clear Aβ peptides from the nervous system in some settings, its failure to do so in AD accelerates synaptic injury, neuronal loss, and cognitive decline. The complex molecular components of this response are beginning to be unraveled, with identification of both damaging and protective roles for individual components of the neuroinflammatory response. Even within one molecular pathway, contrasting effects are often present. As one example, recent studies of the inflammatory cyclooxygenase-prostaglandin pathway have revealed both beneficial and detrimental effects dependent on the disease context, cell type, and downstream signaling pathway. Nonsteroidal anti-inflammatory drugs (NSAIDs), which inhibit cyclooxygenases, are associated with reduced AD risk when taken by cognitively normal populations, but additional clinical and mouse model studies have added complexities and caveats to this finding. Downstream of cyclooxygenase activity, prostaglandin E2 signaling exerts both damaging pro-inflammatory and protective anti-inflammatory effects through actions of specific E-prostanoid G-protein coupled receptors on specific cell types. These complexities underscore the need for careful study of individual components of the neuroinflammatory response to better understand their contribution to AD pathogenesis and progression.
Collapse
Affiliation(s)
- Nathaniel S. Woodling
- Department of Neurology and
Neurological Sciences, Stanford University School of Medicine, 1201
Welch Road, Stanford, California 94305, United States
| | - Katrin I. Andreasson
- Department of Neurology and
Neurological Sciences, Stanford University School of Medicine, 1201
Welch Road, Stanford, California 94305, United States
| |
Collapse
|