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Singh M, Ali H, Renuka Jyothi S, Kaur I, Kumar S, Sharma N, Siva Prasad GV, Pramanik A, Hassan Almalki W, Imran M. Tau proteins and senescent Cells: Targeting aging pathways in Alzheimer's disease. Brain Res 2024; 1844:149165. [PMID: 39155034 DOI: 10.1016/j.brainres.2024.149165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2024] [Revised: 08/02/2024] [Accepted: 08/12/2024] [Indexed: 08/20/2024]
Abstract
Alzheimer's disease (AD) is a devastating neurodegenerative disease characterized by abnormal accumulation of tau proteins and amyloid-β, leading to neuronal death and cognitive impairment. Recent studies have implicated aging pathways, including dysregulation of tau and cellular senescence in AD pathogenesis. In AD brains, tau protein, which normally stabilizes microtubules, becomes hyperphosphorylated and forms insoluble neurofibrillary tangles. These tau aggregates impair neuronal function and are propagated across the brain's neurocircuitry. Meanwhile, the number of senescent cells accumulating in the aging brain is rising, releasing a pro-inflammatory SASP responsible for neuroinflammation and neurodegeneration. This review explores potential therapeutic interventions for AD targeting tau protein and senescent cells, and tau -directed compounds, senolytics, eliminating senescent cells, and agents that modulate the SASP-senomodulators. Ultimately, a combined approach that incorporates tau-directed medications and targeted senescent cell-based therapies holds promise for reducing the harmful impact of AD's shared aging pathways.
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Affiliation(s)
- Mahaveer Singh
- School of Pharmacy and Technology Management, SVKMs NMIMS University, Shirpur campus, Maharastra India
| | - Haider Ali
- Centre for Global Health Research, Saveetha Medical College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, India; Department of Pharmacology, Kyrgyz State Medical College, Bishkek, Kyrgyzstan
| | - S Renuka Jyothi
- Department of Biotechnology and Genetics, School of Sciences, JAIN (Deemed to be University), Bangalore, Karnataka, India
| | - Irwanjot Kaur
- Department of Allied Healthcare and Sciences, Vivekananda Global University, Jaipur, Rajasthan-303012, India
| | - Sachin Kumar
- NIMS Institute of Pharmacy, NIMS University Rajasthan, Jaipur, India
| | - Naveen Sharma
- Chandigarh Pharmacy College, Chandigarh Group of College, Jhanjeri, Mohali 140307, Punjab, India
| | - G V Siva Prasad
- Department of Chemistry, Raghu Engineering College, Visakhapatnam, Andhra Pradesh 531162, India
| | - Atreyi Pramanik
- School of Applied and Life Sciences, Division of Research and Innovation, Uttaranchal University, Dehradun, India
| | - Waleed Hassan Almalki
- Department of Pharmacology, College of Pharmacy, Umm Al-Qura University, Makkah, Saudi Arabia.
| | - Mohd Imran
- Department of Pharmaceutical Chemistry, College of Pharmacy, Northern Border University, Rafha 91911, Saudi Arabia; Center for Health Research, Northern Border University, Arar, Saudi Arabia
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Bobkova NV, Chuvakova LN, Kovalev VI, Zhdanova DY, Chaplygina AV, Rezvykh AP, Evgen'ev MB. A Mouse Model of Sporadic Alzheimer's Disease with Elements of Major Depression. Mol Neurobiol 2024:10.1007/s12035-024-04346-7. [PMID: 38980563 DOI: 10.1007/s12035-024-04346-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 07/02/2024] [Indexed: 07/10/2024]
Abstract
After olfactory bulbectomy, animals are often used as a model of major depression or sporadic Alzheimer's disease and, hence, the status of this model is still disputable. To elucidate the nature of alterations in the expression of the genome after the operation, we analyzed transcriptomes of the cortex, hippocampus, and cerebellum of the olfactory bulbectomized (OBX) mice. Analysis of the functional significance of genes in the brain of OBX mice indicates that the balance of the GABA/glutamatergic systems is disturbed with hyperactivation of the latter in the hippocampus, leading to the development of excitotoxicity and induction of apoptosis in the background of severe mitochondrial dysfunction and astrogliosis. On top of this, the synthesis of neurotrophic factors decreases leading to the disruption of the cytoskeleton of neurons, an increase in the level of intracellular calcium, and the activation of tau protein hyperphosphorylation. Moreover, the acetylcholinergic system is deficient in the background of the hyperactivation of acetylcholinesterase. Importantly, the activity of the dopaminergic, endorphin, and opiate systems in OBX mice decreases, leading to hormonal dysfunction. On the other hand, genes responsible for the regulation of circadian rhythms, cell migration, and innate immunity are activated in OBX animals. All this takes place in the background of a drastic downregulation of ribosomal protein genes in the brain. The obtained results indicate that OBX mice represent a model of Alzheimer's disease with elements of major depression.
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Affiliation(s)
- N V Bobkova
- Institute of Cell Biophysics of the Russian Academy of Sciences-Federal Research Center, Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences, 142290, Pushchino, Moscow Region, Russia
| | - L N Chuvakova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991, Moscow, Russia
| | - V I Kovalev
- Institute of Cell Biophysics of the Russian Academy of Sciences-Federal Research Center, Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences, 142290, Pushchino, Moscow Region, Russia
| | - D Y Zhdanova
- Institute of Cell Biophysics of the Russian Academy of Sciences-Federal Research Center, Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences, 142290, Pushchino, Moscow Region, Russia
| | - A V Chaplygina
- Institute of Cell Biophysics of the Russian Academy of Sciences-Federal Research Center, Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences, 142290, Pushchino, Moscow Region, Russia
| | - A P Rezvykh
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991, Moscow, Russia
| | - M B Evgen'ev
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991, Moscow, Russia.
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Yu P, Chen W, Jiang L, Jia Y, Xu X, Shen W, Jin N, Du H. Olfactory dysfunction and the role of stem cells in the regeneration of olfactory neurons. Heliyon 2024; 10:e29948. [PMID: 38694081 PMCID: PMC11058886 DOI: 10.1016/j.heliyon.2024.e29948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 04/08/2024] [Accepted: 04/17/2024] [Indexed: 05/03/2024] Open
Abstract
The prevalence of COVID-19 has drawn increasing attention to olfactory dysfunction among researchers. Olfactory dysfunction manifests in various clinical types, influenced by numerous pathogenic factors. Despite this diversity, the underlying pathogenesis remains largely elusive, contributing to a lack of standardized treatment approaches. However, the potential regeneration of olfactory neurons within the nasal cavity presents a promising avenue for addressing olfactory dysfunction effectively. Our review aims to delve into the current research landscape and treatment modalities concerning olfactory dysfunction, emphasizing etiology, pathogenesis, clinical interventions, and the role of stem cells in regenerating olfactory nerves. Through this comprehensive examination, we aim to provide valuable insights into understanding the onset, progression, and treatment of olfactory dysfunction diseases.
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Affiliation(s)
- Pengju Yu
- Department of Otolaryngology, Traditional Chinese Medicine Hospital of Kunshan, Jiangsu Province, China
| | - Weiguan Chen
- Operating Room, Traditional Chinese Medicine Hospital of Kunshan, Jiangsu Province, China
| | - Ling Jiang
- Operating Room, Traditional Chinese Medicine Hospital of Kunshan, Jiangsu Province, China
| | - Yufeng Jia
- Operating Room, Traditional Chinese Medicine Hospital of Kunshan, Jiangsu Province, China
| | - Xiaoyan Xu
- Operating Room, Traditional Chinese Medicine Hospital of Kunshan, Jiangsu Province, China
| | - Weiye Shen
- Operating Room, Traditional Chinese Medicine Hospital of Kunshan, Jiangsu Province, China
| | - Ni Jin
- Operating Room, Traditional Chinese Medicine Hospital of Kunshan, Jiangsu Province, China
| | - Hongjie Du
- Department of Otolaryngology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, China
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Çakır M, Yüksel F, Mustafa Özkut M, Durhan M, Kaymak E, Tekin S, Çiğremiş Y. Neuroprotective effect of transient receptor potential Vanilloid 1 agonist capsaicin in Alzheimer’s disease model induced with okadaic acid. Int Immunopharmacol 2023; 118:109925. [PMID: 37011502 DOI: 10.1016/j.intimp.2023.109925] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/30/2023] [Accepted: 02/18/2023] [Indexed: 04/04/2023]
Abstract
BACKGROUND The presence of Transient Receptor Potential Vanilloid 1 (TRPV1) channels was detected in many regions of the human and rat brain, including the cortex and hippocampus. TRPV1 channels have functions such as the modulation of synaptic transmission and plasticity and the regulation of cognitive functions. Previous studies conducted with TRPV1 agonists and antagonists show that this channel is associated with the neurodegenerative process. In the present study, the purpose was to investigate the effects of capsaicin, which is a TRPV1 agonist, and capsazepine, a TRPV1 antagonist, in the Alzheimer's Disease (AD) model that was induced by intracerebroventricular (ICV) administration of okadaic acid (OKA). METHODS The AD-like experimental model was created with bilateral ICV OKA injection. Intraperitoneal capsaicin and capsazepine injections were administered to the treatment groups for 13 days and histological and immunohistochemical examinations were performed from the cortex and hippocampal CA3 regions of the brain. The Morris Water Maze Test was used for spatial memory measurement. RESULTS ICV OKA administration increased the levels of caspase-3, phosphorylated-tau-(ser396), Aβ, TNF-α, and IL1-β, from the cortex and hippocampal CA3 regions of the brain and decreased the phosphorylated-Glycogen synthase kinase-3 beta-(ser9) levels. In addition, the OKA administration corrupted the spatial memory. The TRPV1 agonist capsaicin reversed the pathological changes induced by ICV OKA administration, but not the TRPV1 antagonist capsazepine. CONCLUSIONS It was found in the study that the administration of the TRPV1 agonist capsaicin reduced neurodegeneration, neuroinflammation, and deterioration in spatial memory in the AD model induced by OKA.
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Molobekova CA, Kondaurova EM, Ilchibaeva TV, Rodnyy AY, Stefanova NA, Kolosova NG, Naumenko VS. Amisulpride Decreases Tau Protein Hyperphosphorylation in the Brain of OXYS Rats. Curr Alzheimer Res 2023; 20:496-505. [PMID: 37641989 DOI: 10.2174/1567205020666230828144651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 07/06/2023] [Accepted: 07/11/2023] [Indexed: 08/31/2023]
Abstract
AIM In this study, OXYS rats of three ages (1, 3, and 6 months), a proven model of Alzheimer's disease (AD), at various stages of disease progression were used to thoroughly study the effects of amisulpride on behavior and tau protein phosphorylation. BACKGROUND With the growing number of patients with AD, the problem of finding a cure is very acute. Neurodegeneration in AD has various causes, one of which is hyperphosphorylation of tau protein. OBJECTIVE This study aimed to investigate whether amisulpride would affect pathological tau phosphorylation in AD. METHODS We assessed the influence of chronic administration of amisulpride (3 weeks, 3 mg/kg per day, intraperitoneally)-a 5-HT7 receptor inverse agonist-on behavior and tau hyperphosphorylation in OXYS rats (at ages of 1, 3, and 6 months). RESULTS Chronic administration of amisulpride dramatically decreased tau phosphorylation in the frontal cortex and hippocampus of 3-month-old OXYS rats. Additionally, in 1- and 3-month-old rats' hippocampi, amisulpride diminished the mRNA level of the Cdk5 gene encoding one of the main tau kinases involved in the 5-HT7 receptor-induced effect on tau phosphorylation. CONCLUSION Thus, We found that chronic administration of amisulpride could reduce pathological tau hyperphosphorylation while reducing anxiety. We propose amisulpride to have therapeutic potential against AD and that it can be the most effective in the early stages of the disease.
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Affiliation(s)
- Camilla A Molobekova
- Federal Research Center, Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Akad. Lavrentyeva Ave. 10, Novosibirsk, 630090, Russia
| | - Elena M Kondaurova
- Federal Research Center, Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Akad. Lavrentyeva Ave. 10, Novosibirsk, 630090, Russia
| | - Tatiana V Ilchibaeva
- Federal Research Center, Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Akad. Lavrentyeva Ave. 10, Novosibirsk, 630090, Russia
| | - Alexander Ya Rodnyy
- Federal Research Center, Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Akad. Lavrentyeva Ave. 10, Novosibirsk, 630090, Russia
| | - Natalia A Stefanova
- Federal Research Center, Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Akad. Lavrentyeva Ave. 10, Novosibirsk, 630090, Russia
| | - Nataliya G Kolosova
- Federal Research Center, Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Akad. Lavrentyeva Ave. 10, Novosibirsk, 630090, Russia
| | - Vladimir S Naumenko
- Federal Research Center, Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Akad. Lavrentyeva Ave. 10, Novosibirsk, 630090, Russia
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Wan Chik M, Ramli NA, Mohamad Nor Hazalin NA, Surindar Singh GK. Streptozotocin mechanisms and its role in rodent models for Alzheimer’s disease. TOXIN REV 2022. [DOI: 10.1080/15569543.2022.2150646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Mazzura Wan Chik
- Department of Pharmaceutical Life Sciences, Faculty of Pharmacy, Universiti Teknologi MARA (UiTM), Selangor, Malaysia
| | - Nur Adiilah Ramli
- Department of Pharmaceutical Life Sciences, Faculty of Pharmacy, Universiti Teknologi MARA (UiTM), Selangor, Malaysia
| | - Nurul Aqmar Mohamad Nor Hazalin
- Department of Pharmaceutical Life Sciences, Faculty of Pharmacy, Universiti Teknologi MARA (UiTM), Selangor, Malaysia
- Integrative Pharmacogenomics Institute (iPROMiSE), Level 7, FF3, Universiti Teknologi MARA, Selangor, Malaysia
| | - Gurmeet Kaur Surindar Singh
- Department of Pharmaceutical Life Sciences, Faculty of Pharmacy, Universiti Teknologi MARA (UiTM), Selangor, Malaysia
- Brain Degeneration and Therapeutics Group, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia
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Teixeira FC, Soares MSP, Blödorn EB, Domingues WB, Reichert KP, Zago AM, Carvalho FB, Gutierres JM, Gonçales RA, da Cruz Fernandes M, Campos VF, Chitolina MR, Stefanello FM, Spanevello RM. Investigating the Effect of Inosine on Brain Purinergic Receptors and Neurotrophic and Neuroinflammatory Parameters in an Experimental Model of Alzheimer's Disease. Mol Neurobiol 2021; 59:841-855. [PMID: 34792730 DOI: 10.1007/s12035-021-02627-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 10/27/2021] [Indexed: 10/19/2022]
Abstract
Alzheimer's disease (AD) is a neurodegenerative pathology characterized by progressive impairment of memory, associated with neurochemical alterations and limited therapy. The aim of this study was to evaluate the effects of inosine on memory, neuroinflammatory cytokines, neurotrophic factors, expression of purinergic receptors, and morphological changes in the hippocampus and cerebral cortex of the rats with AD induced by streptozotocin (STZ). Male rats were divided into four groups: I, control; II, STZ; III, STZ plus inosine (50 mg/kg); and IV, STZ plus inosine (100 mg/kg). The animals received intracerebroventricular injections of STZ or buffer. Three days after the surgical procedure, animals were treated with inosine (50 mg/kg or 100 mg/kg) for 25 days. Inosine was able to prevent memory deficits and decreased the immunoreactivity of the brain A2A adenosine receptor induced by STZ. Inosine also increased the levels of brain anti-inflammatory cytokines (IL-4 and IL-10) and the expression of brain-derived neurotrophic factor and its receptor. Changes induced by STZ in the molecular layer of the hippocampus were attenuated by treatment with inosine. Inosine also protected against the reduction of immunoreactivity for synaptophysin induced by STZ in CA3 hippocampus region. However, inosine did not prevent the increase in GFAP in animals exposed to STZ. In conclusion, our findings suggest that inosine has therapeutic potential for AD through the modulation of different brain mechanisms involved in neuroprotection.
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Affiliation(s)
- Fernanda Cardoso Teixeira
- Laboratório de Neuroquímica, Inflamação E Câncer, Programa de Pós Graduação Em Bioquímica E Bioprospeção, Universidade Federal de Pelotas, Campus Capão do Leão, Pelotas, RS, 96010-900, Brazil.
| | - Mayara Sandrielly Pereira Soares
- Laboratório de Neuroquímica, Inflamação E Câncer, Programa de Pós Graduação Em Bioquímica E Bioprospeção, Universidade Federal de Pelotas, Campus Capão do Leão, Pelotas, RS, 96010-900, Brazil
| | - Eduardo Bierhaus Blödorn
- Laboratório de Genômica Estrutural, Programa de Pós - Graduação Em Biotecnologia, Universidade Federal de Pelotas, Campus Capão do Leão, Pelotas, RS, Brazil
| | - William Borges Domingues
- Laboratório de Genômica Estrutural, Programa de Pós - Graduação Em Biotecnologia, Universidade Federal de Pelotas, Campus Capão do Leão, Pelotas, RS, Brazil
| | - Karine Paula Reichert
- Laboratório de Enzimologia Toxicológica, Programa de Pós- Graduação Em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Adriana Maria Zago
- Laboratório de Pesquisa Em Patologia, Programa de Pós - Graduação Em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brazil
| | - Fabiano Barbosa Carvalho
- Laboratório de Pesquisa Em Patologia, Programa de Pós - Graduação Em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brazil
| | - Jessie Martins Gutierres
- Laboratório de Pesquisa Em Patologia, Programa de Pós - Graduação Em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brazil
| | | | - Marilda da Cruz Fernandes
- Laboratório de Pesquisa Em Patologia, Programa de Pós - Graduação Em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brazil
| | - Vinicius Farias Campos
- Laboratório de Genômica Estrutural, Programa de Pós - Graduação Em Biotecnologia, Universidade Federal de Pelotas, Campus Capão do Leão, Pelotas, RS, Brazil
| | - Maria Rosa Chitolina
- Laboratório de Enzimologia Toxicológica, Programa de Pós- Graduação Em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Francieli Moro Stefanello
- Laboratório de Biomarcadores, Programa de Pós - Graduação Em Bioquímica E Bioprospecção, Universidade Federal de Pelotas, Campus Capão do Leão, Pelotas, RS, Brazil
| | - Roselia Maria Spanevello
- Laboratório de Neuroquímica, Inflamação E Câncer, Programa de Pós Graduação Em Bioquímica E Bioprospeção, Universidade Federal de Pelotas, Campus Capão do Leão, Pelotas, RS, 96010-900, Brazil.
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Vignon A, Salvador-Prince L, Lehmann S, Perrier V, Torrent J. Deconstructing Alzheimer's Disease: How to Bridge the Gap between Experimental Models and the Human Pathology? Int J Mol Sci 2021; 22:8769. [PMID: 34445475 PMCID: PMC8395727 DOI: 10.3390/ijms22168769] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/05/2021] [Accepted: 08/06/2021] [Indexed: 02/07/2023] Open
Abstract
Discovered more than a century ago, Alzheimer's disease (AD) is not only still present in our societies but has also become the most common dementia, with 50 million people worldwide affected by the disease. This number is expected to double in the next generation, and no cure is currently available to slow down or stop the disease progression. Recently, some advances were made due to the approval of the aducanumab treatment by the American Food and Drug Administration. The etiology of this human-specific disease remains poorly understood, and the mechanisms of its development have not been completely clarified. Several hypotheses concerning the molecular mechanisms of AD have been proposed, but the existing studies focus primarily on the two main markers of the disease: the amyloid β peptides, whose aggregation in the brain generates amyloid plaques, and the abnormally phosphorylated tau proteins, which are responsible for neurofibrillary tangles. These protein aggregates induce neuroinflammation and neurodegeneration, which, in turn, lead to cognitive and behavioral deficits. The challenge is, therefore, to create models that best reproduce this pathology. This review aims at gathering the different existing AD models developed in vitro, in cellulo, and in vivo. Many models have already been set up, but it is necessary to identify the most relevant ones for our investigations. The purpose of the review is to help researchers to identify the most pertinent disease models, from the most often used to the most recently generated and from simple to complex, explaining their specificities and giving concrete examples.
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Affiliation(s)
- Anaïs Vignon
- INM, University of Montpellier, INSERM, 34095 Montpellier, France; (A.V.); (L.S.-P.)
| | - Lucie Salvador-Prince
- INM, University of Montpellier, INSERM, 34095 Montpellier, France; (A.V.); (L.S.-P.)
| | - Sylvain Lehmann
- INM, University of Montpellier, INSERM, CHU Montpellier, 34095 Montpellier, France;
| | - Véronique Perrier
- INM, University of Montpellier, INSERM, CNRS, 34095 Montpellier, France
| | - Joan Torrent
- INM, University of Montpellier, INSERM, 34095 Montpellier, France; (A.V.); (L.S.-P.)
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Devyatkin VA, Redina OE, Kolosova NG, Muraleva NA. Single-Nucleotide Polymorphisms Associated with the Senescence-Accelerated Phenotype of OXYS Rats: A Focus on Alzheimer's Disease-Like and Age-Related-Macular-Degeneration-Like Pathologies. J Alzheimers Dis 2021; 73:1167-1183. [PMID: 31929160 DOI: 10.3233/jad-190956] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Alzheimer's disease (AD) and age-related macular degeneration (AMD) are two complex incurable neurodegenerative disorders the common pathogenesis of which is actively discussed. There are overlapping risk factors and molecular mechanisms of the two diseases; at the same time, there are arguments in favor of the notion that susceptibility to each of these diseases is associated with a distinct genetic background. Here we identified single-nucleotide polymorphisms (SNPs) that are specific for senescence-accelerated OXYS rats, which simulate key characteristics of both sporadic AD and AMD. Transcriptomes of the hippocampus, prefrontal cortex, and retina (data of RNA-Seq) were analyzed. We detected SNPs in genes Rims2, AABR07072639.2, Lemd2, and AABR07045405.1, which thus can express significantly truncated proteins lacking functionally important domains. Additionally, 33 mutations in genes-which are related to various metabolic and signaling pathways-cause nonsynonymous amino acid substitutions presumably leading to disturbances in protein structure or functions. Some of the genes carrying these SNPs are associated with aging, neurodegenerative, and mental diseases. Thus, we revealed the SNPs can lead to abnormalities in protein structure or functions and affect the development of the senescence-accelerated phenotype of OXYS rats. Our data are consistent with the latest results of genome-wide association studies that highlight the importance of multiple pathways for the pathogenesis of AD and AMD. Identified SNPs can serve as promising research objects for further studies on the molecular mechanisms underlying this particular rat model as well as for the prediction of potential biomarkers of AD and AMD.
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Affiliation(s)
- Vasiliy A Devyatkin
- Institute of Cytology and Genetics, Novosibirsk, Russia.,Novosibirsk State University, Novosibirsk, Russia
| | - Olga E Redina
- Institute of Cytology and Genetics, Novosibirsk, Russia.,Novosibirsk State University, Novosibirsk, Russia
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Criado-Marrero M, Gebru NT, Blazier DM, Gould LA, Baker JD, Beaulieu-Abdelahad D, Blair LJ. Hsp90 co-chaperones, FKBP52 and Aha1, promote tau pathogenesis in aged wild-type mice. Acta Neuropathol Commun 2021; 9:65. [PMID: 33832539 PMCID: PMC8033733 DOI: 10.1186/s40478-021-01159-w] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 03/15/2021] [Indexed: 02/07/2023] Open
Abstract
The microtubule associated protein tau is an intrinsically disordered phosphoprotein that accumulates under pathological conditions leading to formation of neurofibrillary tangles, a hallmark of Alzheimer's disease (AD). The mechanisms that initiate the accumulation of phospho-tau aggregates and filamentous deposits are largely unknown. In the past, our work and others' have shown that molecular chaperones play a crucial role in maintaining protein homeostasis and that imbalance in their levels or activity can drive tau pathogenesis. We have found two co-chaperones of the 90 kDa heat shock protein (Hsp90), FK506-binding protein 52 (FKBP52) and the activator of Hsp90 ATPase homolog 1 (Aha1), promote tau aggregation in vitro and in the brains of tau transgenic mice. Based on this, we hypothesized that increased levels of these chaperones could promote tau misfolding and accumulation in the brains of aged wild-type mice. We tested this hypothesis by overexpressing Aha1, FKBP52, or mCherry (control) proteins in the hippocampus of 9-month-old wild-type mice. After 7 months of expression, mice were evaluated for cognitive and pathological changes. Our results show that FKBP52 overexpression impaired spatial reversal learning, while Aha1 overexpression impaired associative learning in aged wild-type mice. FKBP52 and Aha1 overexpression promoted phosphorylation of distinct AD-relevant tau species. Furthermore, FKBP52 activated gliosis and promoted neuronal loss leading to a reduction in hippocampal volume. Glial activation and phospho-tau accumulation were also detected in areas adjacent to the hippocampus, including the entorhinal cortex, suggesting that after initiation these pathologies can propagate through other brain regions. Overall, our findings suggest a role for chaperone imbalance in the initiation of tau accumulation in the aging brain.
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Affiliation(s)
- Marangelie Criado-Marrero
- USF Health Byrd Alzheimer's Institute, University of South Florida, Tampa, FL, 33613, USA
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, 33620, USA
| | - Niat T Gebru
- USF Health Byrd Alzheimer's Institute, University of South Florida, Tampa, FL, 33613, USA
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, 33620, USA
| | - Danielle M Blazier
- USF Health Byrd Alzheimer's Institute, University of South Florida, Tampa, FL, 33613, USA
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, 33620, USA
| | - Lauren A Gould
- USF Health Byrd Alzheimer's Institute, University of South Florida, Tampa, FL, 33613, USA
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, 33620, USA
| | - Jeremy D Baker
- USF Health Byrd Alzheimer's Institute, University of South Florida, Tampa, FL, 33613, USA
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, 33620, USA
| | - David Beaulieu-Abdelahad
- USF Health Byrd Alzheimer's Institute, University of South Florida, Tampa, FL, 33613, USA
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, 33620, USA
| | - Laura J Blair
- USF Health Byrd Alzheimer's Institute, University of South Florida, Tampa, FL, 33613, USA.
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, 33620, USA.
- Research Service, James A Haley Veterans Hospital, 13000 Bruce B Downs Blvd, Tampa, FL, 33612, USA.
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11
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Bobkova NV. The Balance between Two Branches of RAS Can Protect from Severe COVID-19 Course. BIOCHEMISTRY (MOSCOW) SUPPLEMENT. SERIES A, MEMBRANE AND CELL BIOLOGY 2021; 15:36-51. [PMID: 33643542 PMCID: PMC7897458 DOI: 10.1134/s1990747821010037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 09/09/2020] [Accepted: 09/22/2020] [Indexed: 12/23/2022]
Abstract
The COVID-19 pandemic has swept the world and required the mobilization of scientists and clinicians around the world to combat this serious disease. Along with SARS-CoV-2 virology research, understanding of the fundamental physiological processes, molecular and cellular mechanisms and intracellular signaling pathways underlying the clinical manifestations of COVID-19 is important for effective therapy of this disease. The review describes in detail the interaction of the components of the renin-angiotensin system (RAS) and receptors of end-glycosylated products (RAGE), which plays a special role in normal lung physiology and in pathological conditions in COVID-19, including the development of acute respiratory distress syndrome and "cytokine storm". A separate section is devoted to the latest developments aimed at correcting the dysfunction of the RAS caused by the binding of the virus to angiotensin converting enzyme 2 (ACE2)- the central element of this system. Analysis of published theoretical, clinical, and experimental data indicates the need for a complex treatment to prevent a severe course of COVID-19 using MasR agonists, blockers of the AT1R and NF-κB signaling pathway, as well as compounds with neuroprotective and neuroregenerative effects.
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Affiliation(s)
- N. V. Bobkova
- Institute of Cell Biophysics, Federal Research Center “Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences”, 142290 Pushchino, Moscow oblast Russia
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12
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Potential of Caffeine in Alzheimer's Disease-A Review of Experimental Studies. Nutrients 2021; 13:nu13020537. [PMID: 33562156 PMCID: PMC7915779 DOI: 10.3390/nu13020537] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 01/29/2021] [Accepted: 02/02/2021] [Indexed: 02/08/2023] Open
Abstract
Alzheimer's disease (AD) is the most common type of dementia leading to progressive memory loss and cognitive impairment. Considering that pharmacological treatment options for AD are few and not satisfactory, increasing attention is being paid to dietary components that may affect the development of the disease. Such a dietary component may be caffeine contained in coffee, tea or energy drinks. Although epidemiological data suggest that caffeine intake may counteract the development of cognitive impairment, results of those studies are not conclusive. The aim of the present study is to review the existing experimental studies on the efficacy of caffeine against AD and AD-related cognitive impairment, focusing on the proposed protective mechanisms of action. In conclusion, the reports of studies on experimental AD models generally supported the notion that caffeine may exert some beneficial effects in AD. However, further studies are necessary to elucidate the role of caffeine in the effects of its sources on cognition and possibly AD risk.
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13
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Single Administration of the T-Type Calcium Channel Enhancer SAK3 Reduces Oxidative Stress and Improves Cognition in Olfactory Bulbectomized Mice. Int J Mol Sci 2021; 22:ijms22020741. [PMID: 33451040 PMCID: PMC7828528 DOI: 10.3390/ijms22020741] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 01/03/2021] [Accepted: 01/09/2021] [Indexed: 11/29/2022] Open
Abstract
Alzheimer’s disease (AD), characterized by cognitive impairments, is considered to be one of the most widespread chronic neurodegenerative diseases worldwide. We recently introduced a novel therapeutic agent for AD treatment, the T-type calcium channel enhancer ethyl-8-methyl-2,4-dioxo-2-(piperidin-1-yl)-2H-spiro[cyclopentane-1,3-imidazo[1,2-a]pyridin]-2-ene-3-carboxylate (SAK3). SAK3 enhances calcium/calmodulin-dependent protein kinase II and proteasome activity, thereby promoting amyloid beta degradation in mice with AD. However, the antioxidative effects of SAK3 remain unclear. We investigated the antioxidative effects of SAK3 in olfactory bulbectomized mice (OBX mice), compared with the effects of donepezil as a positive control. As previously reported, single oral administration of both SAK3 (0.5 mg/kg, p.o.) and donepezil (1.0 mg/kg, p.o.) significantly improved cognitive and depressive behaviors in OBX mice. Single oral SAK3 administration markedly reduced 4-hydroxy-2-nonenal and nitrotyrosine protein levels in the hippocampus of OBX mice, which persisted until 1 week after administration. These effects are similar to those observed with donepezil therapy. Increased protein levels of oxidative stress markers were observed in the microglial cells, which were significantly rescued by SAK3 and donepezil. SAK3 could ameliorate oxidative stress in OBX mice, like donepezil, suggesting that the antioxidative effects of SAK3 and donepezil are among the neuroprotective mechanisms in AD pathogenesis.
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Vasilev DS, Dubrovskaya NM, Zhuravin IA, Nalivaeva NN. Developmental Profile of Brain Neprilysin Expression Correlates with Olfactory Behaviour of Rats. J Mol Neurosci 2021; 71:1772-1785. [PMID: 33433852 DOI: 10.1007/s12031-020-01786-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 12/25/2020] [Indexed: 12/26/2022]
Abstract
A neuropeptidase, neprilysin (NEP), is a major amyloid (Aβ)-degrading enzyme involved in the pathogenesis of Alzheimer's disease (AD). The olfactory system is affected early in AD with characteristic Aβ accumulation, but data on the dynamics of NEP expression in the olfactory system are absent. Our study demonstrates that NEP mRNA expression in rat olfactory bulbs (OB), entorhinal cortex (ECx), hippocampus (Hip), parietal cortex (PCx) and striatum (Str) increases during the first postnatal month being the highest in the OB and Str. By 3 months, NEP mRNA levels sharply decrease in the ECx, Hip and PCx and by 9 months in the OB, but not in the Str, which correlates with declining olfaction in aged rats tested in the food search paradigm. One-month-old rats subjected to prenatal hypoxia on E14 had lower NEP mRNA levels in the ECx, Hip and PCx (but not in the OB and Str) compared with the control offspring and demonstrated impaired olfaction in the odour preference and food search paradigms. Administration to these rats of a histone deacetylase inhibitor, sodium valproate, restored NEP expression in the ECx, Hip and PCx and improved olfaction. Our data support NEP involvement in olfactory function.
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Affiliation(s)
- Dimitrii S Vasilev
- I.M. Sechenov Institute of Evolutionary Physiology and Biochemistry, RAS, 44 Thorez Avenue, Saint Petersburg, 194223, Russia
| | - Nadezhda M Dubrovskaya
- I.M. Sechenov Institute of Evolutionary Physiology and Biochemistry, RAS, 44 Thorez Avenue, Saint Petersburg, 194223, Russia
| | - Igor A Zhuravin
- I.M. Sechenov Institute of Evolutionary Physiology and Biochemistry, RAS, 44 Thorez Avenue, Saint Petersburg, 194223, Russia
| | - Natalia N Nalivaeva
- I.M. Sechenov Institute of Evolutionary Physiology and Biochemistry, RAS, 44 Thorez Avenue, Saint Petersburg, 194223, Russia. .,School of Biomedical Sciences, Faculty of Biological Sciences, University of Leeds, Leeds, LS2 9JT, UK.
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15
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Gutierrez MEZ, Savall ASP, da Luz Abreu E, Nakama KA, Dos Santos RB, Guedes MCM, Ávila DS, Luchese C, Haas SE, Quines CB, Pinton S. Co-nanoencapsulated meloxicam and curcumin improves cognitive impairment induced by amyloid-beta through modulation of cyclooxygenase-2 in mice. Neural Regen Res 2021; 16:783-789. [PMID: 33063743 PMCID: PMC8067937 DOI: 10.4103/1673-5374.295339] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Alzheimer’s disease (AD) is a progressive brain disorder and complex mechanisms are involved in the physiopathology of AD. However, there is data suggesting that inflammation plays a role in its development and progression. Indeed, some non-steroidal anti-inflammatory drugs, such as meloxicam, which act by inhibiting cyclooxygenase-2 (COX-2) have been used as neuroprotective agents in different neurodegenerative disease models. The purpose of this study was to investigate the effects of co-nanoencapsulated curcumin and meloxicam in lipid core nanocapsules (LCN) on cognitive impairment induced by amyloid-beta peptide injection in mice. LCN were prepared by the nanoprecipitation method. Male Swiss mice received a single intracerebroventricular injection of amyloid-beta peptide aggregates (fragment 25–35, 3 nmol/3 μL) or vehicle and were subsequently treated with curcumin-loaded LCN (10 mg/kg) or meloxicam-loaded LCN (5 mg/kg) or meloxicam + curcumin-co-loaded LCN (5 and 10 mg/kg, respectively). Treatments were given on alternate days for 12 days (i.e., six doses, once every 48 hours, by intragastric gavage). Our data showed that amyloid-beta peptide infusion caused long-term memory deficits in the inhibitory avoidance and object recognition tests in mice. In the inhibitory avoidance test, both meloxicam and curcumin formulations (oil or co-loaded LCN) improved amyloid-beta-induced memory impairment in mice. However, only meloxicam and curcumin-co-loaded LCN attenuated non-aversive memory impairment in the object recognition test. Moreover, the beneficial effects of meloxicam and curcumin-co-loaded LCN could be explained by the anti-inflammatory properties of these drugs through cortical COX-2 downregulation. Our study suggests that the neuroprotective potential of meloxicam and curcumin co-nanoencapsulation is associated with cortical COX-2 modulation. This study was approved by the Committee on Care and Use of Experimental Animal Resources, the Federal University of Pampa, Brazil (approval No. 02-2015) on April 16, 2015.
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Affiliation(s)
| | - Anne Suély Pinto Savall
- Postgraduation Program in Biochemistry, Federal University of Pampa (UNIPAMPA), Uruguaiana, RS, Brazil
| | - Edina da Luz Abreu
- Postgraduation Program in Biochemistry, Federal University of Pampa (UNIPAMPA), Uruguaiana, RS, Brazil
| | - Kelly Ayumi Nakama
- Postgraduation Program in Pharmaceutical Science, Federal University of Pampa (UNIPAMPA), Uruguaiana, RS, Brazil
| | - Renata Bem Dos Santos
- Postgraduation Program in Pharmaceutical Science, Federal University of Pampa (UNIPAMPA), Uruguaiana, RS, Brazil
| | | | - Daiana Silva Ávila
- Postgraduation Program in Biochemistry, Federal University of Pampa (UNIPAMPA), Uruguaiana, RS, Brazil
| | - Cristiane Luchese
- Postgraduation Program in Biochemistry and Bioprospecting, Federal University of Pelotas (UFPEL), Capão do Leão, RS, Brazil
| | - Sandra Elisa Haas
- Postgraduation Program in Biochemistry; Postgraduation Program in Pharmaceutical Science, Federal University of Pampa (UNIPAMPA), Uruguaiana, RS, Brazil
| | - Caroline Brandão Quines
- Postgraduation Program in Biochemistry, Federal University of Pampa (UNIPAMPA), Uruguaiana, RS, Brazil
| | - Simone Pinton
- Postgraduation Program in Biochemistry, Federal University of Pampa (UNIPAMPA), Uruguaiana, RS, Brazil
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16
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Bolshakov AP, Stepanichev MY, Dobryakova YV, Spivak YS, Markevich VA. Saporin from Saponaria officinalis as a Tool for Experimental Research, Modeling, and Therapy in Neuroscience. Toxins (Basel) 2020; 12:toxins12090546. [PMID: 32854372 PMCID: PMC7551693 DOI: 10.3390/toxins12090546] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 08/17/2020] [Accepted: 08/21/2020] [Indexed: 01/06/2023] Open
Abstract
Saporin, which is extracted from Saponaria officinalis, is a protein toxin that inactivates ribosomes. Saporin itself is non-selective toxin but acquires high specificity after conjugation with different ligands such as signaling peptides or antibodies to some surface proteins expressed in a chosen cell subpopulation. The saporin-based conjugated toxins were widely adopted in neuroscience as a convenient tool to induce highly selective degeneration of desired cell subpopulation. Induction of selective cell death is one of approaches used to model neurodegenerative diseases, study functions of certain cell subpopulations in the brain, and therapy. Here, we review studies where saporin-based conjugates were used to analyze cell mechanisms of sleep, general anesthesia, epilepsy, pain, and development of Parkinson’s and Alzheimer’s diseases. Limitations and future perspectives of use of saporin-based toxins in neuroscience are discussed.
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Affiliation(s)
- Alexey P. Bolshakov
- Laboratory of Molecular Neurobiology, Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, 119991 Moscow, Russia;
- Correspondence:
| | - Mikhail Yu. Stepanichev
- Laboratory of Functional Biochemistry of the Nervous System, Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, 119991 Moscow, Russia;
| | - Yulia V. Dobryakova
- Laboratory of Neurophysiology of Learning, Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, 119991 Moscow, Russia; (Y.V.D.); (V.A.M.)
| | - Yulia S. Spivak
- Laboratory of Molecular Neurobiology, Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, 119991 Moscow, Russia;
| | - Vladimir A. Markevich
- Laboratory of Neurophysiology of Learning, Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, 119991 Moscow, Russia; (Y.V.D.); (V.A.M.)
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Inosine protects against impairment of memory induced by experimental model of Alzheimer disease: a nucleoside with multitarget brain actions. Psychopharmacology (Berl) 2020; 237:811-823. [PMID: 31834453 DOI: 10.1007/s00213-019-05419-5] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 11/27/2019] [Indexed: 12/17/2022]
Abstract
RATIONALE Inosine is a naturally occurring purine nucleoside formed by adenosine breakdown. This nucleoside is reported to exert potent effects on memory and learning, possibly through its antioxidant and anti-inflammatory actions. OBJECTIVE The objective is to evaluate the effects of inosine on the behavioral and neurochemical parameters in a rat model of Alzheimer's disease (AD) induced by streptozotocin (STZ). METHODS Adult male rats were divided into four groups: control (saline), STZ, STZ plus inosine (50 mg/kg), and STZ plus inosine (100 mg/kg). STZ (3 mg/kg) was administered by bilateral intracerebroventricular injection. The animals were treated intraperitoneally with inosine for 25 days. Memory, oxidative stress, ion pump activities, acetylcholinesterase (AChE), and choline acetyltransferase (ChAT) activities and expression were evaluated in the cerebral cortex and hippocampus. RESULTS The memory impairment induced by STZ was prevented by inosine. An increase in the Na+, K+-ATPase, and Mg-ATPase activities and a decrease in the Ca2+-ATPase activity were induced by STZ in the hippocampus and cerebral cortex, and inosine could prevent these alterations in ion pump activities. Inosine also prevented the increase in AChE activity and the alterations in AChE and ChAT expression induced by STZ. STZ increased the reactive oxygen species, nitrite levels, and superoxide dismutase activity and decreased the catalase and glutathione peroxidase activities. Inosine treatment conferred protection from these oxidative alterations in the brain. CONCLUSIONS Our findings demonstrate that inosine affects brain multiple targets suggesting that this molecule may have therapeutic potential against cognitive deficit and tissue damage in AD.
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Pore-former enabled seeding of tau in rats: Alleviation by memantine and lithium chloride. J Neurosci Methods 2019; 319:47-59. [DOI: 10.1016/j.jneumeth.2018.11.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 11/13/2018] [Accepted: 11/14/2018] [Indexed: 12/21/2022]
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Diaz A, Treviño S, Pulido-Fernandez G, Martínez-Muñoz E, Cervantes N, Espinosa B, Rojas K, Pérez-Severiano F, Montes S, Rubio-Osornio M, Jorge G. Epicatechin Reduces Spatial Memory Deficit Caused by Amyloid-β25⁻35 Toxicity Modifying the Heat Shock Proteins in the CA1 Region in the Hippocampus of Rats. Antioxidants (Basel) 2019; 8:antiox8050113. [PMID: 31052185 PMCID: PMC6562866 DOI: 10.3390/antiox8050113] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 03/25/2019] [Accepted: 04/01/2019] [Indexed: 11/16/2022] Open
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder characterized by dementia and the aggregation of the amyloid beta peptide (Aβ). Aβ25-35 is the most neurotoxic sequence, whose mechanism is associated with the neuronal death in the Cornu Ammonis 1 (CA1) region of the hippocampus (Hp) and cognitive damage. Likewise, there are mechanisms of neuronal survival regulated by heat shock proteins (HSPs). Studies indicate that pharmacological treatment with flavonoids reduces the prevalence of AD, particularly epicatechin (EC), which shows better antioxidant activity. The aim of this work was to evaluate the effect of EC on neurotoxicity that causes Aβ25-35 at the level of spatial memory as well as the relationship with immunoreactivity of HSPs in the CA1 region of the Hp of rats. Our results show that EC treatment reduces the deterioration of spatial memory induced by the Aβ25-35, in addition to reducing oxidative stress and inflammation in the Hp of the animals treated with EC + Aβ25-35. Likewise, the immunoreactivity to HSP-60, -70, and -90 is lower in the EC + Aβ25-35 group compared to the Aβ25-35 group, which coincides with a decrease of dead neurons in the CA1 region of the Hp. Our results suggest that EC reduces the neurotoxicity induced by Aβ25-35, as well as the HSP-60, -70, and -90 immunoreactivity and neuronal death in the CA1 region of the Hp of rats injected with Aβ25-35, which favors an improvement in the function of spatial memory.
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Affiliation(s)
- Alfonso Diaz
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Pue. PC. 72540, Mexico.
| | - Samuel Treviño
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Pue. PC. 72540, Mexico.
| | - Guadalupe Pulido-Fernandez
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla, Pue. PC. 72540, Mexico.
| | - Estefanía Martínez-Muñoz
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México PC. 04510, Mexico.
| | - Nallely Cervantes
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México PC. 04510, Mexico.
| | - Blanca Espinosa
- Departamento de Bioquímica, Instituto Nacional de Enfermedades Respiratorias, SSA, Ciudad de Mexico, PC. 14269, Mexico.
| | - Karla Rojas
- Departamento de Ciencias de la Salud, Psicologia. Universidad del Valle de México, sede Sur., Ciudad de Mexico, PC. 04910, Mexico.
| | - Francisca Pérez-Severiano
- Laboratorio de Neurofarmacología Molecular y Nanotecnología, Instituto Nacional de Neurología, SSA, Ciudad de Mexico, PC. 14269, Mexico.
| | - Sergio Montes
- Departamento de Neuroquímica, Instituto Nacional de Neurología, SSA, Ciudad de Mexico, PC. 14269, Mexico.
| | - Moises Rubio-Osornio
- Laboratorio Experimental de Enfermedades Neurodegenerarivas, SSA, Ciudad de Mexico, PC. 14269, Mexico.
| | - Guevara Jorge
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México PC. 04510, Mexico.
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Cannabinoid type 2 receptor agonist JWH-133, attenuates Okadaic acid induced spatial memory impairment and neurodegeneration in rats. Life Sci 2019; 217:25-33. [DOI: 10.1016/j.lfs.2018.11.058] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 11/14/2018] [Accepted: 11/27/2018] [Indexed: 11/24/2022]
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21
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Zhao H, Wu C, Zhang X, Wang L, Sun J, Zhuge F. Insulin Resistance Is a Risk Factor for Mild Cognitive Impairment in Elderly Adults with T2DM. Open Life Sci 2019; 14:255-261. [PMID: 33817159 PMCID: PMC7874771 DOI: 10.1515/biol-2019-0029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 02/23/2019] [Indexed: 12/01/2022] Open
Abstract
OBJECTIVE The aim of this study was to investigate the clinical effects of insulin resistance (IR) in the development of mild cognitive impairment (MCI) in elderly adults with Type 2 diabetes mellitus (T2DM). METHODS Seventy-eight patients with T2DM were recruited and divided into MCI group (<26, n=48) and normal group (≥26, n=30) according to the Montreal Cognitive Assessment (MoCA) score. The fasting plasma glucose (FPG), HbA1c, and fasting plasma C-peptide (FPC) were examined and compared between the two groups. The Pancreatic islets function (HOMA-islet) and Insulin Resistance Index (HOMA-IR) were also calculated for the two groups. Using the HOMA-IR and HOMA-islet as the reference, the predicted values for MCI in T2DM patients were calculated by sensitivity, specificity and area under the receiver operating characteristic (ROC) curve. RESULTS The MoCA scores were statistically different between the MCI and control groups (23.79±1.15 vs 28.50±1.01, p<0.05). The serum FPG and FPC were 10.38±2.36 mmol/L and 0.79±0.34 ng/mL in the MCI group which were significant different from those of the control group (8.96±2.55 mmol/L and 1.04±0.38 ng/mL; p<0.05). The HOMA-IR and HOMA-islet were 10.08±2.64 and 94.67±29.12 for the MCI group and 8.16±2.46 and 130.30±38.43 for the control group; both were statistically different (p<0.05). The serum HbA1c was 11.02±2.59% and 9.37±2.00% for the MCI and control groups (significantly different with p<0.5). A significant positive correlation was found between MoCA score and HOMA-islet (rpearson=0.44; p<0.001). A significant negative correlation existed between MoCA score and serum HbA1c (r=-0.25; p=0.03). The areas under the ROC curve were 0.70 (0.57~0.82), 0.69 (0.57~0.81), 0.69 (0.57~0.80), 0.72 (0.60~0.84), 0.72 (0.60~0.84) and 0.76 (0.65~0.88) respectively for FPG, FPC, HbA1c, HOMA-IR and HOMA-islet. CONCLUSION Insulin resistance is a risk factor for mild cognitive impairment and can be a biomarker for prediction of MCI in patients with T2DM.
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Affiliation(s)
- Hongjun Zhao
- Department of Neurology, The People’s Hospital of Shaoxing City, Shaoxing Zhejiang, No.568 Zhongxingbei RoadShaoxing City Zhejiang Province, 312000PR China
| | - Chenglong Wu
- Department of Neurology, The People’s Hospital of Shaoxing City, Shaoxing Zhejiang, No.568 Zhongxingbei RoadShaoxing City Zhejiang Province, 312000PR China
| | - Xiaoping Zhang
- Department of Gastroenterology, The People’s Hospital of Shaoxing City, Shaoxing Zhejiang, 312000PR China
| | - Liping Wang
- Department of Neurology, The People’s Hospital of Shaoxing City, Shaoxing Zhejiang, No.568 Zhongxingbei RoadShaoxing City Zhejiang Province, 312000PR China
| | - Jianhong Sun
- Department of Neurology, The People’s Hospital of Shaoxing City, Shaoxing Zhejiang, No.568 Zhongxingbei RoadShaoxing City Zhejiang Province, 312000PR China
| | - Fuyuan Zhuge
- Department of Endocrinology, The People’s Hospital of Shaoxing City, Shaoxing Zhejiang, 312000PR China
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Quines CB, Rosa SG, Velasquez D, Prado VC, Neto JS, Nogueira CW. (p-ClPhSe)2 stabilizes metabolic function in a rat model of neuroendocrine obesity induced by monosodium glutamate. Food Chem Toxicol 2018; 118:168-180. [DOI: 10.1016/j.fct.2018.05.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 04/30/2018] [Accepted: 05/04/2018] [Indexed: 12/13/2022]
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Stepanichev MY, Onufriev MV, Peregud DI, Lazareva NA, Moiseeva YV, Nesterenko AN, Novikova MR, Stefanova NA, Kolosova NG, Gulyaeva NV. The Effects of Cortexin on Free-Radical Oxidation and Inflammatory Processes in Rats with Normal and Accelerated Aging. NEUROCHEM J+ 2018. [DOI: 10.1134/s1819712418020113] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Bobkova NV, Novikov VV, Medvinskaya NI, Aleksandrova IY, Nesterova IV, Fesenko EE. Effect of weak combined static and extremely low-frequency alternating magnetic fields on spatial memory and brain amyloid-β in two animal models of Alzheimer's disease. Electromagn Biol Med 2018; 37:127-137. [PMID: 29771571 DOI: 10.1080/15368378.2018.1471700] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
Subchronic effect of a weak combined magnetic field (MF), produced by superimposing a constant component, 42 µT and an alternating MF of 0.08 µT, which was the sum of two frequencies of 4.38 and 4.88 Hz, was studied in olfactory bulbectomized (OBE) and transgenic Tg (APPswe, PSEN1) mice, which were used as animal models of sporadic and heritable Alzheimer's disease (AD) accordingly. Spatial memory was tested in a Morris water maze on the following day after completion of training trials with the hidden platform removed. The amyloid-β (Aβ) level was determined in extracts of the cortex and hippocampus of mice using a specific DOT analysis while the number and dimensions of amyloid plaques were detected after their staining with thioflavin S in transgenic animals. Exposure to the MFs (4 h/day for 10 days) induced the decrease of Aβ level in brain of OBE mice and reduced the number of Aβ plaques in the cortex and hippocampus of Tg animals. However, memory improvement was revealed in Tg mice only, but not in the OBE animals. Here, we suggest that in order to prevent the Aβ accumulation, MFs could be used at early stage of neuronal degeneration in case of AD and other diseases with amyloid protein deposition in other tissues.
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Affiliation(s)
- Natalia V Bobkova
- a Institute of Cell Biophysics , Russian Academy of Sciences , Pushchino , Moscow Region , Russia
| | - Vadim V Novikov
- a Institute of Cell Biophysics , Russian Academy of Sciences , Pushchino , Moscow Region , Russia
| | - Natalia I Medvinskaya
- a Institute of Cell Biophysics , Russian Academy of Sciences , Pushchino , Moscow Region , Russia
| | - Irina Y Aleksandrova
- a Institute of Cell Biophysics , Russian Academy of Sciences , Pushchino , Moscow Region , Russia
| | - Inna V Nesterova
- a Institute of Cell Biophysics , Russian Academy of Sciences , Pushchino , Moscow Region , Russia
| | - Eugenii E Fesenko
- a Institute of Cell Biophysics , Russian Academy of Sciences , Pushchino , Moscow Region , Russia
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