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Gasperoni J, Dworkin S. Cryosectioning and Immunohistochemistry Using Frozen Adult Murine Brain Neural Tissue. Methods Mol Biol 2024; 2746:155-163. [PMID: 38070088 DOI: 10.1007/978-1-0716-3585-8_13] [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] [Indexed: 12/18/2023]
Abstract
Cryopreservation and immunohistochemistry offer a comprehensive, robust, and simple methodology to investigate neural patterning and cellular function. Rapid freezing of the whole brain allows excellent preservation of neural ultrastructure and tissue architecture without destroying sensitive protein epitopes that are often compromised following standard paraffin embedding histological techniques. Here, we present a rapid and simple protocol for employing cryosectioning and subsequent immunohistochemistry in the study of adult murine brain neural tissue.
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Affiliation(s)
- Jemma Gasperoni
- Department of Microbiology, Anatomy, Physiology and Pharmacology, La Trobe University, Melbourne, VIC, Australia
| | - Sebastian Dworkin
- Department of Microbiology, Anatomy, Physiology and Pharmacology, La Trobe University, Melbourne, VIC, Australia.
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2
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KUROKAWA A, YAMAMOTO Y. Immunohistochemical identification of T and B lymphocytes in formalin-fixed, paraffin-embedded tissues of 53 avian species using commercial antibodies. J Vet Med Sci 2023; 85:1121-1130. [PMID: 37661384 PMCID: PMC10600538 DOI: 10.1292/jvms.23-0255] [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: 06/15/2023] [Accepted: 08/16/2023] [Indexed: 09/05/2023] Open
Abstract
Providing a method to detect avian lymphocytes by immunohistochemistry (IHC) would be helpful for analyzing immune function and diagnosing diseases in birds. In this study, we comprehensively examined the immunohistochemical identification of avian T and B lymphocytes in formalin-fixed, paraffin-embedded tissues from 53 avian species across 15 orders, using eight commercially available lymphocyte markers. T lymphocytes from all 53 avian species tested were specifically detected by IHC using the anti-CD3 antibody (clone F7.2.38). The appropriate antibody for detecting avian B lymphocytes in IHC varied depending on the avian species. B lymphocytes were specifically labeled by IHC in 46 of 53 avian species (86.8%) using any of seven B cell markers. The anti-PAX5 antibody (clone SP34) immunohistochemically detected B lymphocytes from the majority of avian species (41 out of 53 species), excluding those in the orders Falconiformes (falcons) and Passeriformes (oscines). The anti-BAFF-R antibody (clone 2C4) proved suitable for detecting B lymphocytes in the orders Galliformes (landfowls) and Anseriformes (waterfowls) in IHC. Caution is advised when using the anti-BLA36 (clone A27-42) and two anti-CD20 (clone L26 and product No. PA5-16701) antibodies, which are commonly used as B cell markers in mammals, for detecting avian B lymphocytes. These antibodies reacted with cells located in both T and B cell areas in certain avian species. The anti-Bu-1a/b (clone AV20) and anti-CD79a (clone HM57) antibodies were found not to bind to B lymphocytes in various avian species in IHC.
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Affiliation(s)
- Aoi KUROKAWA
- National Institute of Animal Health, National Agriculture
and Food Research Organization, Ibaraki, Japan
| | - Yu YAMAMOTO
- National Institute of Animal Health, National Agriculture
and Food Research Organization, Ibaraki, Japan
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3
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Terradillos I, Bonilla-Del Río I, Puente N, Serrano M, Mimenza A, Lekunberri L, Anaut-Lusar I, Reguero L, Gerrikagoitia I, Ruiz de Martín Esteban S, Hillard CJ, Grande MT, Romero J, Elezgarai I, Grandes P. Altered glial expression of the cannabinoid 1 receptor in the subiculum of a mouse model of Alzheimer's disease. Glia 2023; 71:866-879. [PMID: 36437738 DOI: 10.1002/glia.24312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 10/23/2022] [Accepted: 11/18/2022] [Indexed: 11/29/2022]
Abstract
The alteration of the endocannabinoid tone usually associates with changes in the expression and/or function of the cannabinoid CB1 receptor. In Alzheimer's disease (AD), amyloid beta (Aβ)-containing aggregates induce a chronic inflammatory response leading to reactivity of both microglia and astrocytes. However, how this glial response impacts on the glial CB1 receptor expression in the subiculum of a mouse model of AD, a brain region particularly affected by large accumulation of plaques and concomitant subcellular changes in microglia and astrocytes, is unknown. The CB1 receptor localization in both glial cells was investigated in the subiculum of male 5xFAD/CB2 EGFP/f/f (AD model) and CB2 EGFP/f/f mice by immuno-electron microscopy. The findings revealed that glial CB1 receptors suffer remarkable changes in the AD mouse. Thus, CB1 receptor expression increases in reactive microglia in 5xFAD/CB2 EGFP/f/f , but remains constant in astrocytes with CB1 receptor labeling rising proportionally to the perimeter of the reactive astrocytes. Not least, the CB1 receptor localization in microglial processes in the subiculum of controls and closely surrounding amyloid plaques and dystrophic neurites of the AD model, supports previous suggestions of the presence of the CB1 receptor in microglia. These findings on the correlation between glial reactivity and the CB1 receptor expression in microglial cells and astrocytes, contribute to the understanding of the role of the endocannabinoid system in the pathophysiology of Alzheimer's disease.
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Affiliation(s)
- Itziar Terradillos
- Department of Neurosciences, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Leioa, Spain.,Achucarro Basque Center for Neuroscience, Leioa, Spain
| | - Itziar Bonilla-Del Río
- Department of Neurosciences, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Leioa, Spain.,Achucarro Basque Center for Neuroscience, Leioa, Spain
| | - Nagore Puente
- Department of Neurosciences, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Leioa, Spain.,Achucarro Basque Center for Neuroscience, Leioa, Spain
| | - Maitane Serrano
- Department of Neurosciences, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Leioa, Spain.,Achucarro Basque Center for Neuroscience, Leioa, Spain
| | - Amaia Mimenza
- Department of Neurosciences, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Leioa, Spain.,Achucarro Basque Center for Neuroscience, Leioa, Spain
| | - Leire Lekunberri
- Department of Neurosciences, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Leioa, Spain.,Achucarro Basque Center for Neuroscience, Leioa, Spain
| | - Ilazki Anaut-Lusar
- Department of Neurosciences, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Leioa, Spain.,Achucarro Basque Center for Neuroscience, Leioa, Spain
| | - Leire Reguero
- Department of Neurosciences, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Leioa, Spain.,Achucarro Basque Center for Neuroscience, Leioa, Spain
| | - Inmaculada Gerrikagoitia
- Department of Neurosciences, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Leioa, Spain.,Achucarro Basque Center for Neuroscience, Leioa, Spain
| | | | - Cecilia J Hillard
- Department of Pharmacology and Toxicology, Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - María T Grande
- Faculty of Experimental Sciences, Universidad Francisco de Vitoria, Pozuelo de Alarcón, Spain
| | - Julián Romero
- Faculty of Experimental Sciences, Universidad Francisco de Vitoria, Pozuelo de Alarcón, Spain
| | - Izaskun Elezgarai
- Department of Neurosciences, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Leioa, Spain.,Achucarro Basque Center for Neuroscience, Leioa, Spain
| | - Pedro Grandes
- Department of Neurosciences, Faculty of Medicine and Nursing, University of the Basque Country UPV/EHU, Leioa, Spain.,Achucarro Basque Center for Neuroscience, Leioa, Spain
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4
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N-Tosylindole-coumarin with high fluorescence quantum yield and their potential applications. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Liu M, Zhong W, Li C, Su W. Fluoxetine attenuates apoptosis in early brain injury after subarachnoid hemorrhage through Notch1/ASK1/p38 MAPK signaling pathway. Bioengineered 2022; 13:8396-8411. [PMID: 35383529 PMCID: PMC9162017 DOI: 10.1080/21655979.2022.2037227] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Subarachnoid hemorrhage (SAH) is a severe brain condition associated with a significantly high incidence and mortality. As a consequence of SAH, early brain injury (EBI) may contribute to poor SAH patient outcomes. Apoptosis is a signaling pathway contributing to post-SAH early brain injury and the diagnosis of the disease. Fluoxetine is a well-studied serotonin selective reuptake inhibitor (SSRI). However, its role in apoptosis has not been clearly understood. The present investigation assessed the effects of Fluoxetine in apoptosis and the potential Notch1/ASK1/p38 MAPK signaling pathway in EBI after SAH. Adult C57BL/6 J mice were subjected to SAH. Study mice (56) were randomly divided into 4 groups: the surgery without SAH (sham (n = 8), SAH+ vehicle; (SAH+V) (n = 16), surgery+ Fluoxetine (Fluox), (n = 16) and SAH+ Fluoxetine (n = 16). Various parameters were investigated 12, 24, 48, and 72 h after induction of SAH. Western blot analysis, terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick-end labeling (TUNEL) staining, Immunohistochemistry (IHC), and flow cytometry were carried out in every experimental group. According to the findings, the SAH downregulated NOTCH1 signaling pathway, Jlk6 inhibited Notch1, Notch1 inactivation increased apoptotic protein expression and suppressed Bax, and cytochrome C. Fluoxetine reversed the effects of notch1 inhibition in SAH. The Neuroprotective Fluoxetine effects involved suppression of apoptosis post-SAH. In summary, early Fluoxetine treatment significantly attenuates apoptosis and the expression of apoptosis-related proteins after 72 h post-SAH. Fluoxetine may ameliorate early brain injury after subarachnoid hemorrhage through anti-apoptotic effects and Notch1/ASK1/p38 MAPK signaling pathway.
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Affiliation(s)
- Ming Liu
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan City, Shandong Province, China
| | - Weiying Zhong
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan City, Shandong Province, China
| | - Chao Li
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan City, Shandong Province, China
| | - Wandong Su
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan City, Shandong Province, China
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Galiazzo G, De Silva M, Giancola F, Rinnovati R, Peli A, Chiocchetti R. Cellular distribution of cannabinoid-related receptors TRPV1, PPAR-gamma, GPR55 and GPR3 in the equine cervical dorsal root ganglia. Equine Vet J 2021; 54:788-798. [PMID: 34418142 PMCID: PMC9293124 DOI: 10.1111/evj.13499] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 06/18/2021] [Accepted: 08/19/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND The activation of cannabinoid and cannabinoid-related receptors by endogenous, plant-derived or synthetic cannabinoids may exert beneficial effects on pain perception. Of the cannabinoids contained in Cannabis sativa, cannabidiol (CBD) does not produce psychotropic effects and seems to represent a molecule having great therapeutic potential. Cannabidiol acts on a great number of cannabinoid and cannabinoid-related G-protein-coupled receptors and ionotropic receptors which have, to date, been understudied in veterinary medicine particularly in equine medicine. OBJECTIVES To localise the cellular distribution of four putative cannabinoid-related receptors in the equine cervical dorsal root ganglia (DRG). STUDY DESIGN A qualitative and quantitative immunohistochemical study. METHODS The cervical (C6-C8) DRG of six slaughtered horses were obtained from a local slaughterhouse. The tissues were fixed and processed for immunohistochemistry, and the resulting cryosections were used to investigate immunoreactivity for the following putative CBD receptors: Transient receptor potential vanilloid type 1 (TRPV1), nuclear peroxisome proliferator-activated receptor gamma (PPARγ), and G protein-coupled receptors 55 (GPR55) and 3 (GPR3). RESULTS Large percentages of neuronal cell bodies showed immunoreactivity for TRPV1 (80 ± 20%), PPARγ (100%), GPR55 (64 ± 15%) and GPR3 (63 ± 11%). The satellite glial cells (SGCs) were immunoreactive for TRPV1, PPARγ and GPR55. In addition, GPR55 immunoreactivity was expressed by DRG interneuronal macrophages. In addition, microglia cells were observed surrounding the neuron-SGC complex. MAIN LIMITATIONS The limited number of horses included in the study. CONCLUSIONS Cannabinoid-related receptors were distributed in the sensory neurons (TRPV1, PPARγ, GPR55 and GPR3), SGCs (TRPV1, PPARγ and GPR55), macrophages (GPR55) and other interneuronal cells (PPARγ and GPR55) of the equine DRG. Given the key role of DRG cellular elements and cannabinoid receptors in the pathophysiology of pain, the present findings provided an anatomical basis for additional studies aimed at exploring the therapeutic uses of non-psychotropic cannabinoid agonists for the management of pain in horses.
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Affiliation(s)
- Giorgia Galiazzo
- Department of Veterinary Medical Sciences (UNI EN ISO 9001:2008)University of BolognaBolognaItaly
| | - Margherita De Silva
- Department of Veterinary Medical Sciences (UNI EN ISO 9001:2008)University of BolognaBolognaItaly
| | - Fiorella Giancola
- Department of Veterinary Medical Sciences (UNI EN ISO 9001:2008)University of BolognaBolognaItaly
| | - Riccardo Rinnovati
- Department of Veterinary Medical Sciences (UNI EN ISO 9001:2008)University of BolognaBolognaItaly
| | - Angelo Peli
- Department of Veterinary Medical Sciences (UNI EN ISO 9001:2008)University of BolognaBolognaItaly
| | - Roberto Chiocchetti
- Department of Veterinary Medical Sciences (UNI EN ISO 9001:2008)University of BolognaBolognaItaly
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Boos GS, Failing K, Colodel EM, Driemeier D, de Castro MB, Bassuino DM, Diomedes Barbosa J, Herden C. Glial Fibrillary Acidic Protein and Ionized Calcium-Binding Adapter Molecule 1 Immunostaining Score for the Central Nervous System of Horses With Non-suppurative Encephalitis and Encephalopathies. Front Vet Sci 2021; 8:660022. [PMID: 34307520 PMCID: PMC8299206 DOI: 10.3389/fvets.2021.660022] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 06/08/2021] [Indexed: 12/02/2022] Open
Abstract
Like humans, horses are susceptible to neurotropic and neuroinvasive pathogens that are not always readily identified in histological sections. Instead, alterations in astrocytes and microglia cells can be used as pathological hallmarks of injured nervous tissue in a variety of infectious and degenerative diseases. On the other hand, equine glial cell alterations are poorly characterized in diseases. Therefore, in this study, we provide a statistically proved score system to classify astrogliosis and microgliosis in the central nervous system (CNS) of horses, based on morphological and quantitative analyses of 35 equine cases of encephalitis and/or encephalopathies and four non-altered CNS as controls. For this system, we used glial fibrillary acidic protein (GFAP) and ionized calcium-binding adapter molecule 1 (Iba1) immunohistochemistry, allied to statistical analysis to confirm that the scores were correctly designated. The scores of alterations ranged from 0 (non-altered) to 3 (severely altered) and provided a helpful method for describing astrocytic and microglial alterations in horses suffering from inflammatory and degenerative lesions. This system could be a template for comparative studies in other animal species and could aid algorithms designed for artificial intelligence methods lacking a defined morphological pattern.
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Affiliation(s)
- Gisele Silva Boos
- Department of Veterinary Medicine, Institute of Veterinary Pathology, Justus-Liebig-Universität, Gießen, Germany
| | - Klaus Failing
- Unit of Biomathematics and Data Processing, Department of Veterinary Medicine, Justus-Liebig-Universität, Gießen, Germany
| | - Edson Moleta Colodel
- Laboratory of Veterinary Pathology, Universidade Federal do Mato Grosso, Cuiabá, Brazil
| | - David Driemeier
- Department of Veterinary Pathology, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | | | | | - José Diomedes Barbosa
- Veterinary Diagnostics Center, Veterinary Institute, Universidade Federal do Pará, Castanhal, Brazil
| | - Christiane Herden
- Department of Veterinary Medicine, Institute of Veterinary Pathology, Justus-Liebig-Universität, Gießen, Germany
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Lu Y, Zhang C, Yu B, Zhang E, Quan H, Yin X, Cai H, Yuan F, Li L, Xu Y, Su Y, Xing Y, Liao Z, Lan X. The seed oil of Paeonia ludlowii ameliorates Aβ25-35-induced Alzheimer's disease in rats. Food Sci Nutr 2021; 9:2402-2413. [PMID: 34026059 PMCID: PMC8116862 DOI: 10.1002/fsn3.2102] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 11/13/2020] [Accepted: 12/21/2020] [Indexed: 12/18/2022] Open
Abstract
Paeonia ludlowii, a plant of the Paeoniaceae family, has abundant genetic diversity in different populations, and the seed oil can be used in a diverse number of activities. However, its neuroprotective effect is not clear. We investigated the memory-improving effects and associated mechanisms of Paeonia ludlowii seed oil (PLSO) on amyloid beta (Aβ)25-35-induced Alzheimer's disease (AD) in rats. The Morris water maze test was undertaken, and subsequently, the content of malondialdehyde (MDA), superoxide dismutase (SOD), glutathione (GSH), and acetylcholinesterase (ACHE) in the hippocampus was detected by biochemical analyses. To further study PLSO, we examined the pathologic structure and apoptosis of hippocampal tissue by staining. Immunohistochemical analysis was used to detect expression of IBA-1 and GFAP in the hippocampus. Detection of proinflammatory factors was achieved by reverse transcription-quantitative polymerase chain reaction and Western blotting. High-dose PLSO inhibited expression of GFAP and IBA-1. We demonstrated that high-dose PLSO can regulate activation of glial cells and mediate apoptosis of hippocampal cells, and significantly improve learning and memory deficits in AD rats. PLSO could be developed as a nutritional supplement and sold as a drug for AD prevention and/or treatment.
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Affiliation(s)
- Ya‐Zhou Lu
- TAAHC‐SWU Medicinal Plant Joint R&D CentreTibetan Collaborative Innovation Centre of Agricultural and Animal Husbandry ResourcesFood Science CollegeTibet Agricultural and Animal Husbandry UniversityNyingchiChina
- Key Laboratory of Forest Ecology in Tibet Plateau (Tibet Agricultural & Animal Husbandry University)Ministry of EducationNyingchiChina
| | - Chao‐Qi Zhang
- TAAHC‐SWU Medicinal Plant Joint R&D CentreTibetan Collaborative Innovation Centre of Agricultural and Animal Husbandry ResourcesFood Science CollegeTibet Agricultural and Animal Husbandry UniversityNyingchiChina
| | - Ben‐Xia Yu
- Chongqing Institute of Traditional Chinese MedicineChongqingChina
| | - Er‐Hao Zhang
- TAAHC‐SWU Medicinal Plant Joint R&D CentreTibetan Collaborative Innovation Centre of Agricultural and Animal Husbandry ResourcesFood Science CollegeTibet Agricultural and Animal Husbandry UniversityNyingchiChina
| | - Hong Quan
- TAAHC‐SWU Medicinal Plant Joint R&D CentreTibetan Collaborative Innovation Centre of Agricultural and Animal Husbandry ResourcesFood Science CollegeTibet Agricultural and Animal Husbandry UniversityNyingchiChina
- Key Laboratory of Forest Ecology in Tibet Plateau (Tibet Agricultural & Animal Husbandry University)Ministry of EducationNyingchiChina
| | - Xiu Yin
- TAAHC‐SWU Medicinal Plant Joint R&D CentreTibetan Collaborative Innovation Centre of Agricultural and Animal Husbandry ResourcesFood Science CollegeTibet Agricultural and Animal Husbandry UniversityNyingchiChina
| | - Hao Cai
- TAAHC‐SWU Medicinal Plant Joint R&D CentreTibetan Collaborative Innovation Centre of Agricultural and Animal Husbandry ResourcesFood Science CollegeTibet Agricultural and Animal Husbandry UniversityNyingchiChina
| | - Fang Yuan
- TAAHC‐SWU Medicinal Plant Joint R&D CentreTibetan Collaborative Innovation Centre of Agricultural and Animal Husbandry ResourcesFood Science CollegeTibet Agricultural and Animal Husbandry UniversityNyingchiChina
| | - Lian‐Qiang Li
- TAAHC‐SWU Medicinal Plant Joint R&D CentreTibetan Collaborative Innovation Centre of Agricultural and Animal Husbandry ResourcesFood Science CollegeTibet Agricultural and Animal Husbandry UniversityNyingchiChina
| | - Yuan‐Jiang Xu
- TAAHC‐SWU Medicinal Plant Joint R&D CentreTibetan Collaborative Innovation Centre of Agricultural and Animal Husbandry ResourcesFood Science CollegeTibet Agricultural and Animal Husbandry UniversityNyingchiChina
- Key Laboratory of Forest Ecology in Tibet Plateau (Tibet Agricultural & Animal Husbandry University)Ministry of EducationNyingchiChina
| | - Yan‐Jie Su
- TAAHC‐SWU Medicinal Plant Joint R&D CentreTibetan Collaborative Innovation Centre of Agricultural and Animal Husbandry ResourcesFood Science CollegeTibet Agricultural and Animal Husbandry UniversityNyingchiChina
| | - Ya‐Jing Xing
- Chongqing Institute of Traditional Chinese MedicineChongqingChina
| | - Zhi‐Hua Liao
- SWU‐TAAHC Medicinal Plant Joint R&D CentreSouthwest UniversityChongqingChina
| | - Xiao‐Zhong Lan
- TAAHC‐SWU Medicinal Plant Joint R&D CentreTibetan Collaborative Innovation Centre of Agricultural and Animal Husbandry ResourcesFood Science CollegeTibet Agricultural and Animal Husbandry UniversityNyingchiChina
- Chongqing Institute of Traditional Chinese MedicineChongqingChina
- SWU‐TAAHC Medicinal Plant Joint R&D CentreSouthwest UniversityChongqingChina
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Smith LK, Babcock IW, Minamide LS, Shaw AE, Bamburg JR, Kuhn TB. Direct interaction of HIV gp120 with neuronal CXCR4 and CCR5 receptors induces cofilin-actin rod pathology via a cellular prion protein- and NOX-dependent mechanism. PLoS One 2021; 16:e0248309. [PMID: 33705493 PMCID: PMC7951892 DOI: 10.1371/journal.pone.0248309] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 02/23/2021] [Indexed: 01/08/2023] Open
Abstract
Nearly 50% of individuals with long-term HIV infection are affected by the onset of progressive HIV-associated neurocognitive disorders (HAND). HIV infiltrates the central nervous system (CNS) early during primary infection where it establishes persistent infection in microglia (resident macrophages) and astrocytes that in turn release inflammatory cytokines, small neurotoxic mediators, and viral proteins. While the molecular mechanisms underlying pathology in HAND remain poorly understood, synaptodendritic damage has emerged as a hallmark of HIV infection of the CNS. Here, we report that the HIV viral envelope glycoprotein gp120 induces the formation of aberrant, rod-shaped cofilin-actin inclusions (rods) in cultured mouse hippocampal neurons via a signaling pathway common to other neurodegenerative stimuli including oligomeric, soluble amyloid-β and proinflammatory cytokines. Previous studies showed that synaptic function is impaired preferentially in the distal proximity of rods within dendrites. Our studies demonstrate gp120 binding to either chemokine co-receptor CCR5 or CXCR4 is capable of inducing rod formation, and signaling through this pathway requires active NADPH oxidase presumably through the formation of superoxide (O2-) and the expression of cellular prion protein (PrPC). These findings link gp120-mediated oxidative stress to the generation of rods, which may underlie early synaptic dysfunction observed in HAND.
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Affiliation(s)
- Lisa K. Smith
- Department of Chemistry and Biochemistry, University of Alaska Fairbanks, Fairbanks, Alaska, United States of America
| | - Isaac W. Babcock
- Department of Biochemistry and Molecular Biology, Colorado State University, Fort Collins, Colorado, United States of America
| | - Laurie S. Minamide
- Department of Biochemistry and Molecular Biology, Colorado State University, Fort Collins, Colorado, United States of America
| | - Alisa E. Shaw
- Department of Biochemistry and Molecular Biology, Colorado State University, Fort Collins, Colorado, United States of America
| | - James R. Bamburg
- Department of Biochemistry and Molecular Biology, Colorado State University, Fort Collins, Colorado, United States of America
| | - Thomas B. Kuhn
- Department of Chemistry and Biochemistry, University of Alaska Fairbanks, Fairbanks, Alaska, United States of America
- Department of Biochemistry and Molecular Biology, Colorado State University, Fort Collins, Colorado, United States of America
- * E-mail:
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10
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Eosinophils may serve as CEA-secreting cells for allergic bronchopulmonary aspergillosis (ABPA) patients. Sci Rep 2021; 11:4025. [PMID: 33597608 PMCID: PMC7889926 DOI: 10.1038/s41598-021-83470-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Accepted: 02/02/2021] [Indexed: 12/28/2022] Open
Abstract
Allergic bronchopulmonary aspergillosis (ABPA) is a condition characterized by an exaggerated response of the immune system to the fungus Aspergillus. This study aimed to assess the relationship between carcinoembryonic antigen (CEA) and eosinophils in ABPA patients. We describes a case of a 50-year-old patient who was diagnosed with ABPA presenting with high level of CEA and eosinophils. Besides,we used immunohistochemistry and immunofluorescence to identify eosinophils and CEA in sections which were obtained by Endobronchial ultrasound-guided transbronchial lung biopsy aspiration (EBUS-TBLB). The sections were then visualized using confocal microscopy. We also retrospectively analyzed a cohort of 37 ABPA patients between January 2013 and December 2019 in our hospital. We found the patient whose serum CEA levels were consistent with eosinophils during the follow-up (r = 0.929, P = 0.022). The positive expression of CEA and abnormal expression of eosinophils was higher in the ABPA tissue compared to the normal lung tissue. The co-localization was represented as pixels containing both red and green color in the image (with various shades of orange and yellow) which signified that eosinophils were immunohistochemically positive for CEA. Patients with higher levels of eosinophils had higher levels of CEA in the serum (P < 0.001). The results of Pearson correlation analysis showed that the levels of eosinophils were positively correlated with serum CEA levels (r = 0.459 and r = 0.506, P = 0.004 and P = 0.001). Serum CEA level is elevated in ABPA patients. The elevated serum CEA level was shown to be normalized after treatment. Increased CEA levels in ABPA patients may be positively correlated with eosinophil levels, and eosinophils may be served as CEA-secreting cells in patients with ABPA.
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11
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Elmorsy E, Elsharkawy E, Alhumaydhi FA, Salama M. The protective effect of Indian Catechu methanolic extract against aluminum chloride-induced neurotoxicity, A rodent model of Alzheimer's disease. Heliyon 2021; 7:e06269. [PMID: 33665436 PMCID: PMC7898000 DOI: 10.1016/j.heliyon.2021.e06269] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 01/26/2021] [Accepted: 02/10/2021] [Indexed: 11/21/2022] Open
Abstract
Alzheimer's disease (AD) is the commonest neurodegenerative disorder with a wide array of manifestations, courses, and contributing causes. Despite being clinically characterized a long time ago; no treatment has been developed that could improve the pathology or slow down the disease manifestation- so far. Indian Catechu methanolic extract (ICME) has proved to have multiple beneficial effects that support its use in several disorders- especially those with complex etiology. In the present study, we evaluated the neuroprotective effect of ICME in a rat model of AD using Aluminum Chloride (AlCl3). The results showed that ICME could have a positive impact on the course of AD through its anticholinesterase effect and significant antioxidant effect which was reflected on the animals both on behavioral tests as well as hallmark pathological findings.
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Affiliation(s)
- Ekramy Elmorsy
- Forensic Medicine and Clinical Toxicology Department, Faculty of Medicine, Mansoura University, Egypt
- Pathology Department, Faculty of Medicine, Northern Border University-ARAR, North Region, Saudi Arabia
| | - Eman Elsharkawy
- Department of Eco Physiology, Ecology and Range Management Division, Desert Research Center, Mathef El-Mataria, 15753 Egypt
- Department of Chemistry, Science Faculty for Girls, Northern Border University-ARAR, North Region, Saudi Arabia
| | - Fahad A. Alhumaydhi
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah 52571, Saudi Arabia
| | - Mohamed Salama
- Forensic Medicine and Clinical Toxicology Department, Faculty of Medicine, Mansoura University, Egypt
- Institute of Global Health and Human Ecology, The American University in Cairo (AUC), Cairo 11385, Egypt
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12
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Hung WT, Wang CH, Lin SY, Cheng SY, Liao LY, Lu LY, Chen YJ, Huang YZ, Lin CH, Hsueh CM. Leptin protects brain from ischemia/reperfusion-induced infarction by stabilizing the blood-brain barrier to block brain infiltration by the blood-borne neutrophils. Eur J Neurosci 2020; 52:4890-4907. [PMID: 32638449 DOI: 10.1111/ejn.14896] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 06/25/2020] [Accepted: 06/30/2020] [Indexed: 12/11/2022]
Abstract
The cellular and molecular mechanisms underlying leptin-mediated brain protection against cerebral ischemia were investigated at the blood-brain barrier (BBB) and neutrophil level. Through the ischemia/reperfusion (I/R) animal model, we found that leptin expression level was significantly decreased in ischemic hemisphere. Brain injection with leptin (15 μg/kg, intracisternally) could block the I/R-increased BBB permeability, activation of matrix metallopeptidase 9 (MMP-9) and brain infiltration of blood-borne neutrophils to reduce the infarct volume of ischemic brain. The brain expression level of tight junction protein ZO-1 as well as number and motility of neutrophils in blood was all increased by the same injection, indicating BBB stability (rather than reduction in neutrophils) played a major role in the leptin-inhibited brain infiltration of neutrophils. Leptin-mediated protection of BBB was further confirmed in vitro, through a BBB cellular model under the in vitro ischemic condition (G/R: glucose-oxygen-serum deprivation followed by GOS restoration). The results showed that leptin again could block the G/R-increased neutrophil adherence to EC layer as well as BBB permeability, likely by stimulating the endothelial expression of ZO-1 and VE-Cadherin. The study has demonstrated that leptin could protect ischemic brain via multiple ways (other than neuronal protection), by inhibiting the BBB permeability, brain infiltration of the blood-borne neutrophils and neutrophil adherence to vascular ECs. The role of leptin in vascular biology of stroke could further support its therapeutic potential in other neurodegenerative diseases, associated with BBB disorder.
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Affiliation(s)
- Wan-Ting Hung
- Department of Life Sciences, National Chung Hsing University, Taichung City, Taiwan
| | - Chen-Hsuan Wang
- Department of Life Sciences, National Chung Hsing University, Taichung City, Taiwan.,Department of Adapted Physical Education, National Taiwan Sport University, Taoyuan City, Taiwan
| | - Shih-Yi Lin
- Center for Geriatrics and Gerontology, Taichung Veterans General Hospital, Taichung City, Taiwan
| | - Shu-Yun Cheng
- Department of Life Sciences, National Chung Hsing University, Taichung City, Taiwan
| | - Li-Ya Liao
- Department of Life Sciences, National Chung Hsing University, Taichung City, Taiwan
| | - Li-Yu Lu
- Department of Life Sciences, National Chung Hsing University, Taichung City, Taiwan
| | - Yu-Ju Chen
- Department of Life Sciences, National Chung Hsing University, Taichung City, Taiwan
| | - Yu-Zhen Huang
- Department of Life Sciences, National Chung Hsing University, Taichung City, Taiwan
| | - Chi-Hsin Lin
- Department of Medical Research, Mackay Memorial Hospital, New Taipei City, Taiwan.,Department of Bioscience Technology, Chung Yuan Christian University, Taoyuan City, Taiwan
| | - Chi-Mei Hsueh
- Department of Life Sciences, National Chung Hsing University, Taichung City, Taiwan.,The iEGG and Animal Biotechnology Center, National Chung Hsing University, Taichung City, Taiwan
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13
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Kurokawa A, Yamamoto Y. Immunohistochemical identification of T and B lymphocytes in formalin-fixed paraffin-embedded chicken tissues using commercial antibodies. Vet Immunol Immunopathol 2020; 228:110088. [PMID: 32688059 DOI: 10.1016/j.vetimm.2020.110088] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 03/30/2020] [Accepted: 06/22/2020] [Indexed: 11/15/2022]
Abstract
Immunohistochemical method to detect avian lymphocytes is an efficient and reliable tool for accurate diagnosis, and immunological analysis of avian diseases. However, there are scarce studies reporting immunohistochemistry (IHC) using commercially available antibodies in formalin-fixed paraffin-embedded (FFPE) chicken tissues. In the present study, we established an immunohistochemical method to identify chicken T and B lymphocytes in FFPE chicken tissues using commercial antibodies against chicken or human antigens. For this IHC method, the five tested anti-T lymphocyte antibodies reacted with chicken T lymphocytes on the FFPE sections. Further, 10 commercial anti-B lymphocyte antibodies were tested; of these, three successfully detected chicken B lymphocytes for IHC. In particular, anti-human CD3 (clone F7.2.38) antibody was most suitable for the detection of chicken T lymphocytes, whereas anti-chicken B cell activating factor receptor (BAFF-R) antibody (clone 2C4) was most suitable for the detection of chicken B lymphocytes under our IHC staining conditions. These two antibodies reacted with numerous lymphocytes of all representative lymphoid tissues without problematic background staining and nonspecific reactions. Our results indicate that T and B lymphocytes in FFPE chicken tissues can be immunohistochemically detected using commercial antibodies.
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Affiliation(s)
- Aoi Kurokawa
- National Institute of Animal Health, National Agriculture and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan.
| | - Yu Yamamoto
- National Institute of Animal Health, National Agriculture and Food Research Organization, 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan
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14
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Szklarz M, Lipinska A, Slowikowska M, Niedzwiedz A, Marycz K, Janeczek M. Comparison of the clinical and radiographic appearance of the cervical vertebrae with histological and anatomical findings in an eight-month old warmblood stallion suffering from cervical vertebral stenotic myelopathy (CVSM). BMC Vet Res 2019; 15:296. [PMID: 31416466 PMCID: PMC6694563 DOI: 10.1186/s12917-019-2047-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 08/11/2019] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Cervical vertebral stenotic myelopathy (CVSM) remains one of the most important abnormalities of the cervical spine resulting in neurological deficits in horses. The aim of the following study was to compare the results of the clinical and neurological examination, the results of myelography and the post mortem anatomical and histological appearance of the spinal cord and cervical vertebrae in a horse with CVSM. CASE PRESENTATION The following study describes a clinical case of an eight-month-old stallion with ataxia. Plain cervical radiographs indicated narrowing of the spinal canal. Conservative therapy using NSAIDs did not result in any improvement in the gait of the horse. Due to economic constraints, surgical intervention was excluded. The owner chose to humanely euthanise the horse. Immediately after euthanasia, post mortem myelography was performed, and measurements of the myelographic dye column were taken. They revealed a 67% DMC reduction and a 64% DD reduction at the C3/C4 level. Afterwards, an anatomical dissection was performed. The cervical vertebrae and vertebral canal were macroscopically inspected and measured and indicated a 44% narrowing of the canal at the C3/C4 level. The spinal cord was removed and underwent histological evaluation after staining. Microscopic lesions were visible at the level of the compression and included axonal degeneration with partial or complete loss of myelin in the white matter of the lateral and dorsal funiculi as well as the formation of dysfunctional so-called "spongy structures". An increase in the number of microglial cells and collagen was also observed. The formation of glial scars was excluded. Immunohistochemical studies revealed a negative transmembrane glycoprotein CD68(-) - monocyte response and a negative tumor necrosis alpha TNFα (-) reaction. CONCLUSIONS CVSM may be difficult to diagnose, even for experienced veterinary surgeons. Currently, an ex vivo histopathologic examination of the spinal cord is thought to be the gold standard in the diagnosis of CVSM. Our histological examination revealed no CVSM-specific glial scar formation and a CD68(-) negative and TNF-α negative reaction, which have not been previously reported. Histological lesions in CVSM may vary depending show inter-individual variability and on the treatment, which further hinders ex-vivo diagnostics.
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Affiliation(s)
- Magdalena Szklarz
- Department of Animal Physiology and Biostructure, Wroclaw University of Environmental and Life Sciences Faculty of Veterinary Medicine, ul Kozuchowska 1/3, 51-631 Wroclaw, Wrocław, Poland
| | - Anna Lipinska
- Department of Animal Physiology and Biostructure, Wroclaw University of Environmental and Life Sciences Faculty of Veterinary Medicine, ul Kozuchowska 1/3, 51-631 Wroclaw, Wrocław, Poland
| | - Malwina Slowikowska
- Department of Internal Diseases with Clinic for Horses, Dogs and Cats, Wroclaw Univeristy of Environmental and Life Sciences, Faculty of Veterinary Medicine, Pl. Grunwaldzki 47, 50-366 Wroclaw, Wrocław, Poland
| | - Artur Niedzwiedz
- Department of Internal Diseases with Clinic for Horses, Dogs and Cats, Wroclaw Univeristy of Environmental and Life Sciences, Faculty of Veterinary Medicine, Pl. Grunwaldzki 47, 50-366 Wroclaw, Wrocław, Poland
| | - Krzysztof Marycz
- Department of Experimental Biology, Wroclaw University of Environmental and Life Sciences, Faculty of Biology and Animal Science, ul Norwida 27B, 50-375 Wrocław, Poland
| | - Maciej Janeczek
- Department of Animal Physiology and Biostructure, Wroclaw University of Environmental and Life Sciences Faculty of Veterinary Medicine, ul Kozuchowska 1/3, 51-631 Wroclaw, Wrocław, Poland
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15
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Cooper CJ, Keller SM, Arroyo LG, Hewson J, Kenney D, Bienzle D. Acute Leukemia in Horses. Vet Pathol 2017; 55:159-172. [DOI: 10.1177/0300985817720983] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Leukemia is broadly divided into acute and chronic lymphocytic and myeloid types based on the proportion of blasts, morphology of cells, and expression of specific antigens on neoplastic cells. Classifying leukemia in horses can be challenging if blasts predominate and since few antibodies to identify cell types are available. The objective of this study was to describe in detail the clinical and pathologic features of acute leukemia in horses. Twelve horses ranging from 0.2 to 25.9 years of age were diagnosed with acute leukemia. Six cases were classified as acute lymphocytic leukemia (ALL) based on predominance of blasts, lack of granulocytic or monocytic differentiation, and detection of CD3, CD20, and/or CD79a antigens by immunohistochemistry. Six other cases were classified as acute myeloid leukemia (AML) with myelomonocytic ( n = 4), basophilic ( n = 1), and eosinophilic ( n = 1) differentiation based on > 20% bone marrow blasts and partial leukocytic differentiation. Reactivity with antibodies to Iba-1/AIF-1, CD172a, and CD163 was determined for all cases of AML. Eleven horses had thrombocytopenia, 10 had neutropenia, 8 had anemia, all had blasts on blood films, and none had leukocytosis. Ten horses had increased serum acute phase proteins. Bone marrow cellularity ranged from 30% to 100%, and the proportion of blasts ranged from 80% to 100% and 30% to 60% in ALL and AML, respectively. Horses were severely ill at diagnosis and euthanized within days or weeks. Unique features of acute leukemia in horses compared to other species were variable lymphocyte antigen expression (ALL) and frequent inflammation (ALL and AML).
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Affiliation(s)
- Carina J. Cooper
- Department of Clinical Studies, University of Guelph, Guelph, Ontario, Canada
| | - Stefan M. Keller
- Department of Pathobiology, University of Guelph, Guelph, Ontario, Canada
| | - Luis G. Arroyo
- Department of Clinical Studies, University of Guelph, Guelph, Ontario, Canada
| | - Joanne Hewson
- Department of Clinical Studies, University of Guelph, Guelph, Ontario, Canada
| | - Daniel Kenney
- Department of Clinical Studies, University of Guelph, Guelph, Ontario, Canada
| | - Dorothee Bienzle
- Department of Pathobiology, University of Guelph, Guelph, Ontario, Canada
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16
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Amin F, Dar AH, Osama K, Khan F, Mitha R, Tharwani A, Haider G, Chand P, Arain FM. A species dependent response to the pro-epileptic drug pentylentetrazole in birds. Brain Res Bull 2017; 134:189-194. [PMID: 28802899 DOI: 10.1016/j.brainresbull.2017.08.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 07/19/2017] [Accepted: 08/07/2017] [Indexed: 11/18/2022]
Abstract
Epilepsy is common disorder that affects over 50 million people worldwide. Birds remain a promising yet largely under-explored model of epilepsy. This study reports the comparison of the response of two species of birds, Australian Parrots (APs) and Sparrows (SPs), to a pro-epileptic drug, Pentylenetetrazole (PTZ). PTZ injections caused myoclonic jerks (MCJs) and tonic clonic seizures (TCSs) in both species. The frequency of MCJs in APs was greater at the dose of 75mg/kg compared to both 50mg/kg and 25mg/kg while it was not significantly different in SPs. The comparison of APs and SPs showed that the frequency of MCJs was greater in APs compared to SPs at 25mg/kg and 75mg/kg while its latency was reduced at 25mg/kg and 50mg/kg. Interestingly SPs had a reduced latency of TCSs compared to APs at 75mg/kg. Glutamatergic and Gabaergic cell count was conducted to determine an association with the epileptic response to PTZ. The Glutamatergic cell counts for SPs was significantly greater than APs and conversely the Gabaergic cell counts in APs was higher compared to SPs. The reason for this difference in findings needs to be further investigated. This study shows that birds, and APs and SPs in particular, are a valid, interesting and under-explored model of epilepsy that should be further explored in order to understand the mysteries of epilepsy.
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Affiliation(s)
- Faiq Amin
- Department of Biological and Biomedical Sciences, The Aga Khan University, Pakistan
| | - Asim H Dar
- Department of Biological and Biomedical Sciences, The Aga Khan University, Pakistan
| | - Khan Osama
- Department of Biological and Biomedical Sciences, The Aga Khan University, Pakistan
| | - Faezah Khan
- Department of Biological and Biomedical Sciences, The Aga Khan University, Pakistan
| | - Rida Mitha
- Department of Biological and Biomedical Sciences, The Aga Khan University, Pakistan
| | - Arsal Tharwani
- Department of Biological and Biomedical Sciences, The Aga Khan University, Pakistan
| | - Ghulam Haider
- Department of Biological and Biomedical Sciences, The Aga Khan University, Pakistan
| | - Prem Chand
- Department of Pedeatric Neurology, The Aga Khan University, Pakistan
| | - Fazal M Arain
- Department of Biological and Biomedical Sciences, The Aga Khan University, Pakistan.
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17
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Xia Z, Peng W, Cheng S, Zhong B, Sheng C, Zhang C, Gong W, Cheng S, Li J, Wang Z. Naoling decoction restores cognitive function by inhibiting the neuroinflammatory network in a rat model of Alzheimer's disease. Oncotarget 2017; 8:42648-42663. [PMID: 28487495 PMCID: PMC5522095 DOI: 10.18632/oncotarget.17337] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Accepted: 04/10/2017] [Indexed: 01/04/2023] Open
Abstract
Neuroinflammation is central to the pathogenesis of Alzheimer's disease (AD). We previously showed that Naoling decoction (NLD), a traditional Chinese medicine, was effective against AD, acting by inhibiting expression of IL-1β and IL-6. In the present study, we generated the rat model of AD by injecting Aβ1-42 peptide intracerebroventricularly and evaluated the dose-dependent effects of NLD treatment. The NLD-treated rats exhibited significant improvements in cognitive function as evaluated by the Morris water maze test. Golgi-Cox staining revealed that NLD treatment dose-dependently increased dendritic spines in the CA1 region, which were diminished in vehicle-treated rats. Further, NLD treatment normalized hippocampal Chromogranin A levels, which were elevated by Aβ1-42 induction. NLD also attenuated activation of microglia and astrocytes induced by Aβ1-42. Subsequently, NLD dose-dependently reduced levels TNF-α, IL-1β and IL-6 by inhibiting the NF-κB signaling pathway and the ASC-dependent inflammasome in the hippocampus. These findings reveal that NLD is a promising therapeutic agent that exerts inhibitory effects at multiple sites within the neuroinflammatory network induced in AD.
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Affiliation(s)
- Zian Xia
- Department of Integrated Traditional Chinese and Western Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
- Department of Integrated Traditional Chinese and Western Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Weijun Peng
- Department of Integrated Traditional Chinese and Western Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Shunhua Cheng
- Department of Integrated Traditional Chinese and Western Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
- Department of Urology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Bingwu Zhong
- Department of Integrated Traditional Chinese and Western Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Chenxia Sheng
- Department of Integrated Traditional Chinese and Western Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Chunhu Zhang
- Department of Integrated Traditional Chinese and Western Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Wei Gong
- Department of Integrated Traditional Chinese and Western Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
- Department of Neurology, Liuyang Hospital of Traditional Chinese Medicine, Liuyang, Hunan 4103002, China
| | - Shuai Cheng
- Department of Integrated Traditional Chinese and Western Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Jun Li
- Thyroid Tumour Internal Medicine Department, Cancer Hospital Affiliated to Xiangya School of Medicine, Central South University, Changsha 410013 Hunan, China
| | - Zhe Wang
- Department of Integrated Traditional Chinese and Western Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
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18
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Delcambre GH, Liu J, Streit WJ, Shaw GPJ, Vallario K, Herrington J, Wenzlow N, Barr KL, Long MT. Phenotypic characterisation of cell populations in the brains of horses experimentally infected with West Nile virus. Equine Vet J 2017; 49:815-820. [PMID: 28470955 DOI: 10.1111/evj.12697] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 04/21/2017] [Indexed: 11/28/2022]
Abstract
BACKGROUND West Nile virus (WNV), a mosquito borne member of the Flaviviridae, is one of the most commonly diagnosed agents of viral encephalitis in horses and people worldwide. OBJECTIVES A cassette of markers for formalin-fixed paraffin-embedded tissue and an archive of tissues from experimental infections in the horse were used to investigate the equine neuroimmune response to WNV meningoencephalomyelitis to phenotype the early response to WNV infection in the horse. STUDY DESIGN Quantitative analysis using archived tissue from experimentally infected horses. METHODS The thalamus and hindbrain from 2 groups of 6 horses were compared and consisted of a culture positive tissues from WNV experimentally horses, in the other, normal horses. Formalin-fixed paraffin-embedded tissue from the thalamus and hindbrain were immunolabeled for microglia, astrocytes, B cells, macrophages/neutrophils, CD3+ T cells. Fresh frozen tissues were immunolabeled for CD4+ and CD8+ T lymphocyte cell markers. Cell counts were obtained using a computer software program. Differences, after meeting assumptions of abnormality, were computed using a general linear model with a Tukey test (P<0.05) for pairwise comparisons. RESULTS In WNV-challenged horses, Iba-1+ microglia, CD3+ T lymphocyte and MAC387+ macrophage staining were significantly increased. The T cell response for the WNV-challenged horses was mixed, composed of CD4+ and CD8+ T lymphocytes. A limited astrocyte response was also observed in WNV-challenged horses, and MAC387+ and B cells were the least abundant cell populations. MAIN LIMITATIONS The results of this study were limited by a single collection time post-infection. Furthermore, a comprehensive analysis of cellular phenotypes is needed for naturally infected horses. Unfortunately, in clinical horses, there is high variability of sampling in terms of days post-infection and tissue handling. CONCLUSIONS The data show that WNV-challenged horses recruit a mixed T cell population at the onset of neurologic disease.
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Affiliation(s)
- G H Delcambre
- Department of Biomedical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado, USA
| | - J Liu
- Department of Infectious Diseases and Pathology, College of Veterinary Medicine, University of Florida, Gainesville, Florida, USA
| | - W J Streit
- Department of Neuroscience, College of Medicine, University of Florida, Gainesville, Florida, USA
| | - G P J Shaw
- Department of Neuroscience, College of Medicine, University of Florida, Gainesville, Florida, USA
| | - K Vallario
- Department of Infectious Diseases and Pathology, College of Veterinary Medicine, University of Florida, Gainesville, Florida, USA
| | - J Herrington
- Department of Infectious Diseases and Pathology, College of Veterinary Medicine, University of Florida, Gainesville, Florida, USA
| | - N Wenzlow
- Department of Infectious Diseases and Pathology, College of Veterinary Medicine, University of Florida, Gainesville, Florida, USA
| | - K L Barr
- Department of Infectious Diseases and Pathology, College of Veterinary Medicine, University of Florida, Gainesville, Florida, USA
| | - M T Long
- Department of Infectious Diseases and Pathology, College of Veterinary Medicine, University of Florida, Gainesville, Florida, USA
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