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Liu Z, Xu K, Pan S, Zhang N, Wang D, Chen Y, Zhao Y, Wang S, Li J, Tong X. Manganese-enhanced magnetic resonance assessment of changes in hippocampal neural function after the treatment of radiation-induced brain injury with bone marrow mesenchymal stem cells. Brain Res Bull 2023; 204:110795. [PMID: 37863438 DOI: 10.1016/j.brainresbull.2023.110795] [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: 07/20/2023] [Revised: 10/03/2023] [Accepted: 10/17/2023] [Indexed: 10/22/2023]
Abstract
The role of bone marrow mesenchymal stem cells (BMSCs) in treating radiation-induced brain injury (RIBI) is not completely understood, and assessment methods to directly characterize neurological function are lacking. In this study, we aimed to evaluate the effects of BMSCs treatment on changes in hippocampal neural function in Sprague-Dawley(SD) rats with RIBI, and to evaluate the therapeutic effect of BMSCs by manganese-enhanced magnetic resonance imaging (MEMRI). First, we assessed cognitive function after RIBI treatment with BMSCs using the Morris water maze. Next, we used MEMRI at two time points to observe the treatment effect and explore the correlation between MEMRI and cognitive function. Finally, we evaluated the expression of specific hippocampal neurofunctional proteins, the ultrastructure of hippocampal nerves, and the histological changes in the hippocampus. After BMSCs treatment of RIBI, cognitive dysfunction improved significantly, the expression of hippocampal neurofunctional proteins was increased, the integrity of the hippocampal neural structure was protected, and nerve cell survival was enhanced. The improvement in neurological function was successfully detected by MEMRI, and MEMRI was highly correlated with cognitive function and histological changes. These results suggest that BMSCs treatment of RIBI is an optional modality, and MEMRI can be used for treatment evaluation.
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Affiliation(s)
- Zhanhong Liu
- College of Medical Technology, Qiqihar Medical University, Qiqihar 161006, China
| | - Kaina Xu
- College of Medical Technology, Qiqihar Medical University, Qiqihar 161006, China
| | - Shichao Pan
- College of Medical Technology, Qiqihar Medical University, Qiqihar 161006, China
| | - Na Zhang
- Department of Radiotherapy, the Third Affiliated Hospital of Qiqihar Medical University, Qiqihar 161006, China
| | - Dapeng Wang
- Department of Radiotherapy, the Third Affiliated Hospital of Qiqihar Medical University, Qiqihar 161006, China
| | - Ying Chen
- Department of Radiotherapy, the Third Affiliated Hospital of Qiqihar Medical University, Qiqihar 161006, China
| | - Yaru Zhao
- Department of Radiotherapy, the Third Affiliated Hospital of Qiqihar Medical University, Qiqihar 161006, China
| | - Siqi Wang
- Department of Radiotherapy, the Third Affiliated Hospital of Qiqihar Medical University, Qiqihar 161006, China
| | - Jing Li
- Department of Radiotherapy, the Third Affiliated Hospital of Qiqihar Medical University, Qiqihar 161006, China
| | - Xu Tong
- Department of Radiotherapy, the Third Affiliated Hospital of Qiqihar Medical University, Qiqihar 161006, China.
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Keledjian K, Makar T, Zhang C, Zhang J, Shim B, Davis H, Bryant J, Gerzanich V, Simard JM, Zhao RY. Correlation of HIV-Induced Neuroinflammation and Synaptopathy with Impairment of Learning and Memory in Mice with HAND. J Clin Med 2023; 12:5169. [PMID: 37629211 PMCID: PMC10455390 DOI: 10.3390/jcm12165169] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 08/01/2023] [Accepted: 08/06/2023] [Indexed: 08/27/2023] Open
Abstract
Over 38 million people worldwide are living with HIV/AIDS, and more than half of them are affected by HIV-associated neurocognitive disorders (HAND). Such disorders are characterized by chronic neuroinflammation, neurotoxicity, and central nervous system deterioration, which lead to short- or long-term memory loss, cognitive impairment, and motor skill deficits that may show gender disparities. However, the underlying mechanisms remain unclear. Our previous study suggested that HIV-1 infection and viral protein R (Vpr) upregulate the SUR1-TRPM4 channel associated with neuroinflammation, which may contribute to HAND. The present study aimed to explore this relationship in a mouse model of HAND. This study employed the HIV transgenic Tg26 mouse model, comparing Tg26 mice with wildtype mice in various cognitive behavioral and memory tests, including locomotor activity tests, recognition memory tests, and spatial learning and memory tests. The study found that Tg26 mice exhibited impaired cognitive skills and reduced learning abilities compared to wildtype mice, particularly in spatial memory. Interestingly, male Tg26 mice displayed significant differences in spatial memory losses (p < 0.001), while no significant differences were identified in female mice. Consistent with our early results, SUR1-TRPM4 channels were upregulated in Tg26 mice along with glial fibrillary acidic protein (GFAP) and aquaporin 4 (AQP4), consistent with reactive astrocytosis and neuroinflammation. Corresponding reductions in neurosynaptic responses, as indicated by downregulation of Synapsin-1 (SYN1) and Synaptophysin (SYP), suggested synaptopathy as a possible mechanism underlying cognitive and motor skill deficits. In conclusion, our study suggests a possible relationship between SUR1-TRPM4-mediated neuroinflammation and synaptopathy with impairments of learning and memory in mice with HAND. These findings could help to develop new therapeutic strategies for individuals living with HAND.
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Affiliation(s)
- Kaspar Keledjian
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (K.K.); (T.M.); (B.S.); (V.G.)
| | - Tapas Makar
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (K.K.); (T.M.); (B.S.); (V.G.)
| | - Chenyu Zhang
- Department of Pathology, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (C.Z.); (J.Z.)
| | - Jiantao Zhang
- Department of Pathology, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (C.Z.); (J.Z.)
| | - Bosung Shim
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (K.K.); (T.M.); (B.S.); (V.G.)
| | - Harry Davis
- Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (H.D.); (J.B.)
| | - Joseph Bryant
- Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (H.D.); (J.B.)
| | - Volodymyr Gerzanich
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (K.K.); (T.M.); (B.S.); (V.G.)
| | - J. Marc Simard
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (K.K.); (T.M.); (B.S.); (V.G.)
- Department of Pathology, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (C.Z.); (J.Z.)
- Surgical Care Clinical Center, VA Maryland Health Care System, Baltimore, MD 21201, USA
| | - Richard Y. Zhao
- Department of Pathology, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (C.Z.); (J.Z.)
- Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD 21201, USA; (H.D.); (J.B.)
- Department of Microbiology-Immunology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Institute of Global Health, University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Research & Development Service, VA Maryland Health Care System, Baltimore, MD 21201, USA
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Sherrill-Mix S, Yang M, Aldrovandi GM, Brenchley JM, Bushman FD, Collman RG, Dandekar S, Klatt NR, Lagenaur LA, Landay AL, Paredes R, Tachedjian G, Turpin JA, Serrano-Villar S, Lozupone CA, Ghosh M. A Summary of the Sixth International Workshop on Microbiome in HIV Pathogenesis, Prevention, and Treatment. AIDS Res Hum Retroviruses 2022; 38:173-180. [PMID: 34969255 PMCID: PMC9009592 DOI: 10.1089/aid.2021.0173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
In October of 2020, researchers from around the world met online for the sixth annual International Workshop on Microbiome in HIV Pathogenesis, Prevention, and Treatment. New research was presented on the roles of the microbiome on immune response and HIV transmission and pathogenesis and the potential for alterations in the microbiome to decrease transmission and affect comorbidities. This article presents a summary of the findings reported.
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Affiliation(s)
- Scott Sherrill-Mix
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Address correspondence to: Scott Sherrill-Mix, Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, 424 Johnson Pavilion, 3610 Hamilton Walk, Philadelphia, PA 19104, USA
| | - Michelle Yang
- Department of Epidemiology, The George Washington University, Washington, District of Columbia, USA
| | - Grace M. Aldrovandi
- Department of Pediatrics, University of California, Los Angeles, California, USA
| | | | - Frederic D. Bushman
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Ronald G. Collman
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Satya Dandekar
- Department of Medical Microbiology and Immunology, University of California, Davis, Davis, California, USA
| | - Nichole R. Klatt
- Department of Medicine, University of Minnesota, Minneapolis, Minnesota, USA
| | | | - Alan L. Landay
- Division of Gerontology, Department of Internal Medicine, Rush University Medical Center, Chicago, Illinois, USA
| | - Roger Paredes
- Institut de Recerca de la SIDA IrsiCaixa i Unitat VIH, Universitat Autònoma de Barcelona, Universitat de Vic, Catalonia, Spain
| | | | - Jim A. Turpin
- Divison of AIDS, NIAID, NIH, Bethesda, Maryland, USA
| | - Sergio Serrano-Villar
- Department of Infectious Diseases, Hospital Universitario Ramon y Cajal, Madrid, Spain
| | | | - Mimi Ghosh
- Department of Epidemiology, The George Washington University, Washington, District of Columbia, USA
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Frye HE, Izumi Y, Harris AN, Williams SB, Trousdale CR, Sun MY, Sauerbeck AD, Kummer TT, Mennerick S, Zorumski CF, Nelson EC, Dougherty JD, Morón JA. Sex Differences in the Role of CNIH3 on Spatial Memory and Synaptic Plasticity. Biol Psychiatry 2021; 90:766-780. [PMID: 34548146 PMCID: PMC8571071 DOI: 10.1016/j.biopsych.2021.07.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 07/12/2021] [Accepted: 07/12/2021] [Indexed: 01/23/2023]
Abstract
BACKGROUND CNIH3 is an AMPA receptor (AMPAR) auxiliary protein prominently expressed in the dorsal hippocampus (dHPC), a region that plays a critical role in spatial memory and synaptic plasticity. However, the effects of CNIH3 on AMPAR-dependent synaptic function and behavior have not been investigated. METHODS We assessed a gain-of-function model of Cnih3 overexpression in the dHPC and generated and characterized a line of Cnih3-/- C57BL/6 mice. We assessed spatial memory through behavioral assays, protein levels of AMPAR subunits and synaptic proteins by immunoblotting, and long-term potentiation in electrophysiological recordings. We also utilized a super-resolution imaging workflow, SEQUIN (Synaptic Evaluation and Quantification by Imaging of Nanostructure), for analysis of nanoscale synaptic connectivity in the dHPC. RESULTS Overexpression of Cnih3 in the dHPC improved short-term spatial memory in female mice but not in male mice. Cnih3-/- female mice exhibited weakened short-term spatial memory, reduced dHPC synapse density, enhanced expression of calcium-impermeable AMPAR (GluA2-containing) subunits in synaptosomes, and attenuated long-term potentiation maintenance compared with Cnih3+/+ control mice; Cnih3-/- males were unaffected. Further investigation revealed that deficiencies in spatial memory and changes in AMPAR composition and synaptic plasticity were most pronounced during the metestrus phase of the estrous cycle in female Cnih3-/- mice. CONCLUSIONS This study identified a novel effect of sex and estrous on CNIH3's role in spatial memory and synaptic plasticity. Manipulation of CNIH3 unmasked sexually dimorphic effects on spatial memory, synaptic function, AMPAR composition, and hippocampal plasticity. These findings reinforce the importance of considering sex as a biological variable in studies of memory and hippocampal synaptic function.
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Affiliation(s)
- Hannah E Frye
- Department of Anesthesiology, Washington University School of Medicine, St. Louis, Missouri; Pain Center, Washington University School of Medicine, St. Louis, Missouri; Program in Neuroscience, Washington University in St. Louis, St. Louis, Missouri
| | - Yukitoshi Izumi
- Department of Psychiatry, Washington University School of Medicine, St. Louis, Missouri; Department of Neuroscience, Washington University School of Medicine, St. Louis, Missouri; Taylor Family Institute for Innovative Psychiatric Research, Washington University School of Medicine, St. Louis, Missouri
| | - Alexis N Harris
- Department of Genetics, Washington University School of Medicine, St. Louis, Missouri
| | - Sidney B Williams
- Department of Anesthesiology, Washington University School of Medicine, St. Louis, Missouri; Pain Center, Washington University School of Medicine, St. Louis, Missouri
| | - Christopher R Trousdale
- Department of Anesthesiology, Washington University School of Medicine, St. Louis, Missouri; Pain Center, Washington University School of Medicine, St. Louis, Missouri
| | - Min-Yu Sun
- Department of Psychiatry, Washington University School of Medicine, St. Louis, Missouri
| | - Andrew D Sauerbeck
- Department of Neurology, Washington University School of Medicine, St. Louis, Missouri
| | - Terrance T Kummer
- Department of Neurology, Washington University School of Medicine, St. Louis, Missouri
| | - Steven Mennerick
- Department of Psychiatry, Washington University School of Medicine, St. Louis, Missouri; Department of Neuroscience, Washington University School of Medicine, St. Louis, Missouri; Taylor Family Institute for Innovative Psychiatric Research, Washington University School of Medicine, St. Louis, Missouri
| | - Charles F Zorumski
- Department of Psychiatry, Washington University School of Medicine, St. Louis, Missouri; Department of Neuroscience, Washington University School of Medicine, St. Louis, Missouri; Taylor Family Institute for Innovative Psychiatric Research, Washington University School of Medicine, St. Louis, Missouri
| | - Elliot C Nelson
- Department of Psychiatry, Washington University School of Medicine, St. Louis, Missouri
| | - Joseph D Dougherty
- Department of Psychiatry, Washington University School of Medicine, St. Louis, Missouri; Department of Genetics, Washington University School of Medicine, St. Louis, Missouri
| | - Jose A Morón
- Department of Anesthesiology, Washington University School of Medicine, St. Louis, Missouri; Pain Center, Washington University School of Medicine, St. Louis, Missouri; Department of Psychiatry, Washington University School of Medicine, St. Louis, Missouri; Department of Neuroscience, Washington University School of Medicine, St. Louis, Missouri.
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Moidunny S, Benneyworth MA, Titus DJ, Beurel E, Kolli U, Meints J, Jalodia R, Ramakrishnan S, Atkins CM, Roy S. Glycogen synthase kinase-3 inhibition rescues sex-dependent contextual fear memory deficit in human immunodeficiency virus-1 transgenic mice. Br J Pharmacol 2020; 177:5658-5676. [PMID: 33080056 DOI: 10.1111/bph.15288] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 09/14/2020] [Accepted: 09/19/2020] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND AND PURPOSE A significant number of HIV-1 patients on antiretroviral therapy develop HIV-associated neurocognitive disorders (HAND). Evidence indicate that biological sex may regulate HAND pathogenesis, but the mechanisms remain unknown. We investigated synaptic mechanisms associated with sex differences in HAND, using the HIV-1-transgenic 26 (Tg26) mouse model. EXPERIMENTAL APPROACH Contextual- and cue-dependent memories of male and female Tg26 mice and littermate wild type mice were assessed in a fear conditioning paradigm. Hippocampal electrophysiology, immunohistochemistry, western blot, qRT-PCR and ELISA techniques were used to investigate cellular, synaptic and molecular impairments. KEY RESULTS Cue-dependent memory was unaltered in male and female Tg26 mice, when compared to wild type mice. Male, but not female, Tg26 mice showed deficits in contextual fear memory. Consistently, only male Tg26 mice showed depressed hippocampal basal synaptic transmission and impaired LTP induction in area CA1. These deficits in male Tg26 mice were independent of hippocampal neuronal loss and microglial activation but were associated with increased HIV-1 long terminal repeat mRNA expression, reduced hippocampal synapsin-1 protein, reduced BDNF mRNA and protein, reduced AMPA glutamate receptor (GluA1) phosphorylation levels and increased glycogen synthase kinase 3 (GSK3) activity. Importantly, selective GSK3 inhibition using 4-benzyl-2-methyl-1,2,4-thiadiazolidine-3,5-dione increased levels of synapsin-1, BDNF and phosphorylated-GluA1 proteins, restored hippocampal basal synaptic transmission and LTP, and improved contextual fear memory in male Tg26 mice. CONCLUSION AND IMPLICATIONS Sex-dependent impairments in contextual fear memory and synaptic plasticity in Tg26 mice are associated with increased GSK3 activity. This implicates GSK3 inhibition as a potential therapeutic strategy to improve cognition in HIV-1 patients.
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Affiliation(s)
- Shamsudheen Moidunny
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | | | - David J Titus
- Department of Neuroscience, University of Minnesota, Minneapolis, MN, USA.,The Miami Project to Cure Paralysis, Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Eleonore Beurel
- Department of Psychiatry and Behavioral Sciences, Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Udhghatri Kolli
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Joyce Meints
- Department of Neuroscience, University of Minnesota, Minneapolis, MN, USA
| | - Richa Jalodia
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Sundaram Ramakrishnan
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Coleen M Atkins
- The Miami Project to Cure Paralysis, Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Sabita Roy
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
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