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Orbach G, Melendes EJ, Warren K, Qiu J, Meehan WP, Mannix R, Guilhaume-Correa F. Visual Impairment in Pre-Clinical Models of Mild Traumatic Brain Injury. J Neurotrauma 2024; 41:1842-1852. [PMID: 38497739 PMCID: PMC11386989 DOI: 10.1089/neu.2023.0574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2024] Open
Abstract
Impairment in visual function is common after traumatic brain injury (TBI) in the clinical setting, a phenomenon that translates to pre-clinical animal models as well. In Morris et al. (2021), we reported histological changes following weight-drop-induced TBI in a rodent model including retinal ganglion cell (RGC) loss, decreased electroretinogram (ERG) evoked potential, optic nerve diameter reduction, induced inflammation and gliosis, and loss of myelin accompanied by markedly impaired visual acuity. In this review, we will describe several pre-clinical TBI models that result in injuries to the visual system, indicating that visual function may be impaired following brain injury induced by a number of different injury modalities. This underscores the importance of understanding the role of the visual system and the potential detrimental sequelae to this sensory modality post-TBI. Given that most commonly employed behavioral tests such as the Elevated Plus Maze and Morris Water Maze rely on an intact visual system, interpretation of functional deficits in diffuse models may be confounded by off- target effects on the visual system.
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Affiliation(s)
- Gabriella Orbach
- Tufts University School of Medicine, Boston, Massachusetts, USA
- Division of Emergency Medicine, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Eva J Melendes
- Division of Emergency Medicine, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Kaitlyn Warren
- Division of Emergency Medicine, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Jianhua Qiu
- Division of Emergency Medicine, Boston Children's Hospital, Boston, Massachusetts, USA
| | - William P Meehan
- Division of Sports Medicine, Boston Children's Hospital, Boston, Massachusetts, USA
- The Micheli Center for Sports Injury Prevention, Waltham, Massachusetts, USA
- Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
| | - Rebekah Mannix
- Division of Emergency Medicine, Boston Children's Hospital, Boston, Massachusetts, USA
- Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
| | - Fernanda Guilhaume-Correa
- Division of Emergency Medicine, Boston Children's Hospital, Boston, Massachusetts, USA
- Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
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Xia Y, Wei K, Jiang L, Zou D, Yang Y, Wu S, Hu F, Ma Y. Expression levels and clinical significance of serum miR-19a/CCL20 in patients with acute cerebral infarction. Open Med (Wars) 2024; 19:20240977. [PMID: 38961881 PMCID: PMC11221218 DOI: 10.1515/med-2024-0977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 04/30/2024] [Accepted: 05/07/2024] [Indexed: 07/05/2024] Open
Abstract
Acute cerebral infarction (ACI) is a lethal disease whose early diagnosis is critical for treatment. microRNA (miR)-19a targets CC chemokine ligand 20 (CCL20) in myocardial infarction. We investigated the expression patterns of serum miR-19a and CCL20 of ACI patients and assessed their clinical values. Serum samples of 50 healthy subjects and110 ACI patients were collected. Serum levels of miR-19a, CCL20 mRNA, and biochemical indexes were assessed. miR-19a downstream target gene and the binding relationship between miR-19a and CCL20 were predicted and verified. miR-19a and CCL20 mRNA were subjected to correlation and diagnostic efficiency analysis. miR-19a was poorly expressed in the serum of ACI patients, especially in patients with unstable plaque and large infarction. tumor necrosis factor-α, low-density lipoprotein, and platelet/lymphocyte ratio negatively correlated with serum miR-19a level and positively correlated with CCL20. Dual-luciferase assay revealed that miR-19a could negatively regulate CCL20 expression. CCL20 was highly expressed in the serum of ACI patients. The area under receiver-operating characteristic curve of miR-19a combined with CCL20 was 0.9741 (98.00% specificity, 90.91% sensitivity), higher than their single diagnosis. Collectively, miR-19a had high diagnostic value for ACI and could target to restrain CCL20. The combination of miR-19a and CCL20 improved diagnostic value for ACI.
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Affiliation(s)
- Yongli Xia
- Department of Neurosurgery, Affiliated Hospital of Southwest Medical University, Luzhou646000, Sichuan, China
- Clinical Medicine Department, Sichuan College of Traditional Chinese Medicine, Mianyang621000, Sichuan, China
- Department of Neurosurgery, Anzhou District People’s Hospital, Mianyang622650, Sichuan, China
| | - Kun Wei
- Department of Neurosurgery, Affiliated Hospital of Southwest Medical University, Luzhou646000, Sichuan, China
| | - Lingli Jiang
- Department of Neurosurgery, General Hospital of The Western Theater Command, Chengdu610083, Sichuan, China
| | - Dongbo Zou
- Department of Neurosurgery, General Hospital of The Western Theater Command, Chengdu610083, Sichuan, China
| | - Yuting Yang
- Department of Neurosurgery, General Hospital of The Western Theater Command, Chengdu610083, Sichuan, China
| | - Song Wu
- Department of Neurosurgery, Affiliated Hospital of Southwest Medical University, Luzhou646000, Sichuan, China
| | - Fei Hu
- Department of Neurosurgery, Affiliated Hospital of Southwest Medical University, Luzhou646000, Sichuan, China
| | - Yuan Ma
- Department of Neurosurgery, Affiliated Hospital of Southwest Medical University, Luzhou646000, Sichuan, China
- Department of Neurosurgery, General Hospital of The Western Theater Command, Chengdu610083, Sichuan, China
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Wang C, Wang J, Zhu Z, Hu J, Lin Y. Spotlight on pro-inflammatory chemokines: regulators of cellular communication in cognitive impairment. Front Immunol 2024; 15:1421076. [PMID: 39011039 PMCID: PMC11247373 DOI: 10.3389/fimmu.2024.1421076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2024] [Accepted: 06/12/2024] [Indexed: 07/17/2024] Open
Abstract
Cognitive impairment is a decline in people's ability to think, learn, and remember, and so forth. Cognitive impairment is a global health challenge that affects the quality of life of thousands of people. The condition covers a wide range from mild cognitive impairment to severe dementia, which includes Alzheimer's disease (AD) and Parkinson's disease (PD), among others. While the etiology of cognitive impairment is diverse, the role of chemokines is increasingly evident, especially in the presence of chronic inflammation and neuroinflammation. Although inflammatory chemokines have been linked to cognitive impairment, cognitive impairment is usually multifactorial. Researchers are exploring the role of chemokines and other inflammatory mediators in cognitive dysfunction and trying to develop therapeutic strategies to mitigate their effects. The pathogenesis of cognitive disorders is very complex, their underlying causative mechanisms have not been clarified, and their treatment is always one of the challenges in the field of medicine. Therefore, exploring its pathogenesis and treatment has important socioeconomic value. Chemokines are a growing family of structurally and functionally related small (8-10 kDa) proteins, and there is growing evidence that pro-inflammatory chemokines are associated with many neurobiological processes that may be relevant to neurological disorders beyond their classical chemotactic function and play a crucial role in the pathogenesis and progression of cognitive disorders. In this paper, we review the roles and regulatory mechanisms of pro-inflammatory chemokines (CCL2, CCL3, CCL4, CCL5, CCL11, CCL20, and CXCL8) in cognitive impairment. We also discuss the intrinsic relationship between the two, hoping to provide some valuable references for the treatment of cognitive impairment.
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Affiliation(s)
- Chenxu Wang
- Department of Anesthesiology, The First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- Department of Endocrinology and Metabolism, The Second Clinical Medical College of Nanchang University, Nanchang, China
| | - Jiayi Wang
- Department of Anesthesiology, The First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- Department of Endocrinology and Metabolism, The Second Clinical Medical College of Nanchang University, Nanchang, China
| | - Zhichao Zhu
- Department of Anesthesiology, The First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- Department of Endocrinology and Metabolism, The Second Clinical Medical College of Nanchang University, Nanchang, China
| | - Jialing Hu
- Department of Emergency Medicine, The Second Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang, China
| | - Yong Lin
- Department of Anesthesiology, The First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- Ganzhou Key Laboratory of Anesthesia, The First Affiliated Hospital of GanNan Medical University, Ganzhou, China
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Kempuraj D, Mohan RR. Blast injury: Impact to the cornea. Exp Eye Res 2024; 244:109915. [PMID: 38677709 PMCID: PMC11179966 DOI: 10.1016/j.exer.2024.109915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 04/03/2024] [Accepted: 04/24/2024] [Indexed: 04/29/2024]
Abstract
Visual disorders are common even after mild traumatic brain injury (mTBI) or blast exposure. The cost of blast-induced vision loss in civilians, military personnel, and veterans is significant. The visual consequences of blasts associated with TBI are elusive. Active military personnel and veterans report various ocular pathologies including corneal disorders post-combat blasts. The wars and conflicts in Afghanistan, Iraq, Syria, and Ukraine have significantly increased the number of corneal and other ocular disorders among military personnel and veterans. Binocular vision, visual fields, and other visual functions could be impaired following blast-mediated TBI. Blast-associated injuries can cause visual disturbances, binocular system problems, and visual loss. About 25% of veterans exposed to blasts report corneal injury. Blast exposure induces corneal edema, corneal opacity, increased corneal thickness, damage of corneal epithelium, corneal abrasions, and stromal and endothelial abnormality including altered endothelial density, immune cell infiltration, corneal neovascularization, Descemet membrane rupture, and increased pain mediators in animal models and the blast-exposed military personnel including veterans. Immune response exacerbates blast-induced ocular injury. TBI is associated with dry eyes and pain in veterans. Subjects exposed to blasts that cause TBI should undergo immediate clinical visual and ocular examinations. Delayed visual care may lead to progressive vision loss, lengthening/impairing rehabilitation and ultimately may lead to permanent vision problems and blindness. Open-field blast exposure could induce corneal injuries and immune responses in the cornea. Further studies are warranted to understand corneal pathology after blast exposure. A review of current advancements in blast-induced corneal injury will help elucidate novel targets for potential therapeutic options. This review discusses the impact of blast exposure-associated corneal disorders.
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Affiliation(s)
- Duraisamy Kempuraj
- Harry S. Truman Memorial Veterans' Hospital, Columbia, MO, United States; One-Health Vision Research Program, Departments of Veterinary Medicine & Surgery and Biomedical Sciences, College of Veterinary Medicine, University of Missouri, Columbia, MO, United States
| | - Rajiv R Mohan
- Harry S. Truman Memorial Veterans' Hospital, Columbia, MO, United States; One-Health Vision Research Program, Departments of Veterinary Medicine & Surgery and Biomedical Sciences, College of Veterinary Medicine, University of Missouri, Columbia, MO, United States; Mason Eye Institute, School of Medicine, University of Missouri, Columbia, MO, United States.
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Borucki DM, Rohrer B, Tomlinson S. Complement propagates visual system pathology following traumatic brain injury. J Neuroinflammation 2024; 21:98. [PMID: 38632569 PMCID: PMC11022420 DOI: 10.1186/s12974-024-03098-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 04/10/2024] [Indexed: 04/19/2024] Open
Abstract
BACKGROUND Traumatic brain injury (TBI) is associated with the development of visual system disorders. Visual deficits can present with delay and worsen over time, and may be associated with an ongoing neuroinflammatory response that is known to occur after TBI. Complement system activation is strongly associated with the neuroinflammatory response after TBI, but whether it contributes to vision loss after TBI is unexplored. METHODS Acute and chronic neuroinflammatory changes within the dorsal lateral geniculate nucleus (dLGN) and retina were investigated subsequent to a moderate to severe murine unilateral controlled cortical impact. Neuroinflammatory and histopathological outcomes were interpreted in the context of behavioral and visual function data. To investigate the role of complement, cohorts were treated after TBI with the complement inhibitor, CR2-Crry. RESULTS At 3 days after TBI, complement component C3 was deposited on retinogeniculate synapses in the dLGN both ipsilateral and contralateral to the lesion, which was reduced in CR2-Crry treated animals. This was associated with microglia morphological changes in both the ipsilateral and contralateral dLGN, with a less ramified phenotype in vehicle compared to CR2-Crry treated animals. Microglia in vehicle treated animals also had a greater internalized VGlut2 + synaptic volume after TBI compared to CR2-Crry treated animals. Microglia morphological changes seen acutely persisted for at least 49 days after injury. Complement inhibition also reduced microglial synaptic internalization in the contralateral dLGN and increased the association between VGLUT2 and PSD95 puncta, indicating preservation of intact synapses. Unexpectedly, there were no changes in the thickness of the inner retina, retinal nerve fiber layer or retinal ganglion layer. Neuropathological changes in the dLGN were accompanied by reduced visual acuity at subacute and chronic time points after TBI, with improvement seen in CR2-Crry treated animals. CONCLUSION TBI induces complement activation within the dLGN and promotes microglial activation and synaptic internalization. Complement inhibition after TBI in a clinically relevant paradigm reduces complement activation, maintains a more surveillance-like microglia phenotype, and preserves synaptic density within the dLGN. Together, the data indicate that complement plays a key role in the development of visual deficits after TBI via complement-dependent microglial phagocytosis of synapses within the dLGN.
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Affiliation(s)
- Davis M Borucki
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC, USA
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, USA
| | - Baerbel Rohrer
- Department of Ophthalmology, Medical University of South Carolina, Charleston, SC, USA.
- Ralph Johnson VA Medical Center, Charleston, SC, USA.
| | - Stephen Tomlinson
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC, USA.
- Ralph Johnson VA Medical Center, Charleston, SC, USA.
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Ciechanowska A, Mika J. CC Chemokine Family Members' Modulation as a Novel Approach for Treating Central Nervous System and Peripheral Nervous System Injury-A Review of Clinical and Experimental Findings. Int J Mol Sci 2024; 25:3788. [PMID: 38612597 PMCID: PMC11011591 DOI: 10.3390/ijms25073788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 03/18/2024] [Accepted: 03/27/2024] [Indexed: 04/14/2024] Open
Abstract
Despite significant progress in modern medicine and pharmacology, damage to the nervous system with various etiologies still poses a challenge to doctors and scientists. Injuries lead to neuroimmunological changes in the central nervous system (CNS), which may result in both secondary damage and the development of tactile and thermal hypersensitivity. In our review, based on the analysis of many experimental and clinical studies, we indicate that the mechanisms occurring both at the level of the brain after direct damage and at the level of the spinal cord after peripheral nerve damage have a common immunological basis. This suggests that there are opportunities for similar pharmacological therapeutic interventions in the damage of various etiologies. Experimental data indicate that after CNS/PNS damage, the levels of 16 among the 28 CC-family chemokines, i.e., CCL1, CCL2, CCL3, CCL4, CCL5, CCL6, CCL7, CCL8, CCL9, CCL11, CCL12, CCL17, CCL19, CCL20, CCL21, and CCL22, increase in the brain and/or spinal cord and have strong proinflammatory and/or pronociceptive effects. According to the available literature data, further investigation is still needed for understanding the role of the remaining chemokines, especially six of them which were found in humans but not in mice/rats, i.e., CCL13, CCL14, CCL15, CCL16, CCL18, and CCL23. Over the past several years, the results of studies in which available pharmacological tools were used indicated that blocking individual receptors, e.g., CCR1 (J113863 and BX513), CCR2 (RS504393, CCX872, INCB3344, and AZ889), CCR3 (SB328437), CCR4 (C021 and AZD-2098), and CCR5 (maraviroc, AZD-5672, and TAK-220), has beneficial effects after damage to both the CNS and PNS. Recently, experimental data have proved that blockades exerted by double antagonists CCR1/3 (UCB 35625) and CCR2/5 (cenicriviroc) have very good anti-inflammatory and antinociceptive effects. In addition, both single (J113863, RS504393, SB328437, C021, and maraviroc) and dual (cenicriviroc) chemokine receptor antagonists enhanced the analgesic effect of opioid drugs. This review will display the evidence that a multidirectional strategy based on the modulation of neuronal-glial-immune interactions can significantly improve the health of patients after CNS and PNS damage by changing the activity of chemokines belonging to the CC family. Moreover, in the case of pain, the combined administration of such antagonists with opioid drugs could reduce therapeutic doses and minimize the risk of complications.
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Affiliation(s)
| | - Joanna Mika
- Department of Pain Pharmacology, Maj Institute of Pharmacology Polish Academy of Sciences, 12 Smetna Str., 31-343 Kraków, Poland;
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Rademeyer KM, R Nass S, Jones AM, Ohene-Nyako M, Hauser KF, McRae M. Fentanyl dysregulates neuroinflammation and disrupts blood-brain barrier integrity in HIV-1 Tat transgenic mice. J Neurovirol 2024; 30:1-21. [PMID: 38280928 PMCID: PMC11232468 DOI: 10.1007/s13365-023-01186-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Revised: 10/29/2023] [Accepted: 11/16/2023] [Indexed: 01/29/2024]
Abstract
Opioid overdose deaths have dramatically increased by 781% from 1999 to 2021. In the setting of HIV, opioid drug abuse exacerbates neurotoxic effects of HIV in the brain, as opioids enhance viral replication, promote neuronal dysfunction and injury, and dysregulate an already compromised inflammatory response. Despite the rise in fentanyl abuse and the close association between opioid abuse and HIV infection, the interactive comorbidity between fentanyl abuse and HIV has yet to be examined in vivo. The HIV-1 Tat-transgenic mouse model was used to understand the interactive effects between fentanyl and HIV. Tat is an essential protein produced during HIV that drives the transcription of new virions and exerts neurotoxic effects within the brain. The Tat-transgenic mouse model uses a glial fibrillary acidic protein (GFAP)-driven tetracycline promoter which limits Tat production to the brain and this model is well used for examining mechanisms related to neuroHIV. After 7 days of fentanyl exposure, brains were harvested. Tight junction proteins, the vascular cell adhesion molecule, and platelet-derived growth factor receptor-β were measured to examine the integrity of the blood brain barrier. The immune response was assessed using a mouse-specific multiplex chemokine assay. For the first time in vivo, we demonstrate that fentanyl by itself can severely disrupt the blood-brain barrier and dysregulate the immune response. In addition, we reveal associations between inflammatory markers and tight junction proteins at the blood-brain barrier.
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Affiliation(s)
- Kara M Rademeyer
- Department of Pharmacotherapy and Outcomes Science, Virginia Commonwealth University, Richmond, VA, 23298, U.S.A
| | - Sara R Nass
- Department of Pharmacology and Toxicology, School of Medicine, Virginia Commonwealth University, Richmond, VA, U.S.A
| | - Austin M Jones
- Department of Pharmacotherapy and Outcomes Science, Virginia Commonwealth University, Richmond, VA, 23298, U.S.A
| | - Michael Ohene-Nyako
- Department of Pharmacology and Toxicology, School of Medicine, Virginia Commonwealth University, Richmond, VA, U.S.A
| | - Kurt F Hauser
- Department of Pharmacology and Toxicology, School of Medicine, Virginia Commonwealth University, Richmond, VA, U.S.A
| | - MaryPeace McRae
- Department of Neuroscience, School of Medicine, University of Virginia, Charlottesville, VA, 22908, U.S.A..
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Morris AR, Gudenschwager Basso EK, Gutierrez-Monreal MA, Arja RD, Kobeissy FH, Janus CG, Wang KK, Zhu J, Liu AC. Lifelong Chronic Sleep Disruption in a Mouse Model of Traumatic Brain Injury. Neurotrauma Rep 2024; 5:61-73. [PMID: 38288298 PMCID: PMC10823169 DOI: 10.1089/neur.2023.0107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2024] Open
Abstract
Chronic sleep/wake disturbances (SWDs) are strongly associated with traumatic brain injury (TBI) in patients and are being increasingly recognized. However, the underlying mechanisms are largely understudied and there is an urgent need for animal models of lifelong SWDs. The objective of this study was to develop a chronic TBI rodent model and investigate the lifelong chronic effect of TBI on sleep/wake behavior. We performed repetitive midline fluid percussion injury (rmFPI) in 4-month-old mice and monitored their sleep/wake behavior using the non-invasive PiezoSleep system. Sleep/wake states were recorded before injury (baseline) and then monthly thereafter. We found that TBI mice displayed a significant decrease in sleep duration in both the light and dark phases, beginning at 3 months post-TBI and continuing throughout the study. Consistent with the sleep phenotype, these TBI mice showed circadian locomotor activity phenotypes and exhibited reduced anxiety-like behavior. TBI mice also gained less weight, and had less lean mass and total body water content, compared to sham controls. Further, TBI mice showed extensive brain tissue loss and increased glial fibrillary acidic protein and ionized calcium-binding adaptor molecule 1 levels in the hypothalamus and vicinity of the injury, indicative of chronic neuropathology. In summary, our study identified a critical time window of TBI pathology and associated circadian and sleep/wake phenotypes. Future studies should leverage this mouse model to investigate the molecular mechanisms underlying the chronic sleep/wake phenotypes post-TBI early in life.
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Affiliation(s)
- Andrew R. Morris
- Department of Physiology and Aging, Department of Neuroscience, University of Florida College of Medicine, Gainesville, Florida, USA
| | - Erwin K. Gudenschwager Basso
- Department of Physiology and Aging, Department of Neuroscience, University of Florida College of Medicine, Gainesville, Florida, USA
| | - Miguel A. Gutierrez-Monreal
- Department of Physiology and Aging, Department of Neuroscience, University of Florida College of Medicine, Gainesville, Florida, USA
| | - Rawad Daniel Arja
- Center for Neurotrauma, Multiomics & Biomarkers, Department of Neurobiology and Neuroscience Institute, Morehouse School of Medicine, Atlanta, Georgia, USA
| | - Firas H. Kobeissy
- Center for Neurotrauma, Multiomics & Biomarkers, Department of Neurobiology and Neuroscience Institute, Morehouse School of Medicine, Atlanta, Georgia, USA
| | - Christopher G. Janus
- Center for Translational Research in Neurodegenerative Disease (CTRND), Department of Neuroscience, University of Florida College of Medicine, Gainesville, Florida, USA
| | - Kevin K.W. Wang
- Center for Neurotrauma, Multiomics & Biomarkers, Department of Neurobiology and Neuroscience Institute, Morehouse School of Medicine, Atlanta, Georgia, USA
| | - Jiepei Zhu
- Center for Neurotrauma, Multiomics & Biomarkers, Department of Neurobiology and Neuroscience Institute, Morehouse School of Medicine, Atlanta, Georgia, USA
| | - Andrew C. Liu
- Department of Physiology and Aging, Department of Neuroscience, University of Florida College of Medicine, Gainesville, Florida, USA
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Haro S, Gomez-Lahoz AM, Monserrat J, Atienza-Pérez M, Fraile-Martinez O, Ortega MA, García-Montero C, Díaz D, Lopez-Dolado E, Álvarez-Mon M. Patients with Chronic Spinal Cord Injury Display a Progressive Alteration over the Years of the Activation Stages of the T Lymphocyte Compartment. Int J Mol Sci 2023; 24:17596. [PMID: 38139422 PMCID: PMC10744286 DOI: 10.3390/ijms242417596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/12/2023] [Accepted: 12/16/2023] [Indexed: 12/24/2023] Open
Abstract
Spinal cord injury (SCI) is a serious medical condition associated with severe morbidities and disability. Chronic SCI patients present an enhanced susceptibility to infections and comorbidities with inflammatory pathogenesis. Chronic SCI appears to be associated with a systemic dysfunction of the immune system. We investigated the alteration of the pivotal CD4+ and CD8+ T lymphocytes in patients with chronic SCI at different years of evolution. A clinically homogenous population of 105 patients with chronic SCI (31 with time of evolution less than 5 years (SCI SP); 32 early chronic (SCI ECP) with time of evolution between 5 and 15 years; and 42 late chronic (SCI LCP) with time of evolution more than 15 years) and 38 healthy controls were enrolled. SCI ECP and SCI LCP patients showed significant CD4+ and CD8+ T lymphopenia, ascribed to a reduction in naïve and CM subsets. Furthermore, SCI ECP and SCI LCP patients showed a significant reduction in the expression of CD28 on CD8+ T lymphocytes. The expression of CCR6 by CD4+ T lymphocytes was decreased during the evolution of chronic SCI, but on CD8+ T lymphocytes, it was observed during the first 15 years of evolution. In conclusion, the chronic SCI course with severe damage to T lymphocytes mainly worsens over the years of disease evolution.
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Affiliation(s)
- Sergio Haro
- Department of Medicine and Medical Specialities, University of Alcala, Crta N-II km 33.6, 28871 Alcala de Henares, Spain; (S.H.); (A.M.G.-L.); (J.M.); (O.F.-M.); (M.A.O.); (C.G.-M.); (D.D.); (E.L.-D.)
- Ramón y Cajal Institute of Sanitary Research (IRYCIS), 28034 Madrid, Spain
| | - Ana M. Gomez-Lahoz
- Department of Medicine and Medical Specialities, University of Alcala, Crta N-II km 33.6, 28871 Alcala de Henares, Spain; (S.H.); (A.M.G.-L.); (J.M.); (O.F.-M.); (M.A.O.); (C.G.-M.); (D.D.); (E.L.-D.)
- Ramón y Cajal Institute of Sanitary Research (IRYCIS), 28034 Madrid, Spain
| | - Jorge Monserrat
- Department of Medicine and Medical Specialities, University of Alcala, Crta N-II km 33.6, 28871 Alcala de Henares, Spain; (S.H.); (A.M.G.-L.); (J.M.); (O.F.-M.); (M.A.O.); (C.G.-M.); (D.D.); (E.L.-D.)
- Ramón y Cajal Institute of Sanitary Research (IRYCIS), 28034 Madrid, Spain
| | - Mar Atienza-Pérez
- Service of Rehabilitation, National Hospital for Paraplegic Patients, Carr. de la Peraleda, S/N, 45004 Toledo, Spain;
| | - Oscar Fraile-Martinez
- Department of Medicine and Medical Specialities, University of Alcala, Crta N-II km 33.6, 28871 Alcala de Henares, Spain; (S.H.); (A.M.G.-L.); (J.M.); (O.F.-M.); (M.A.O.); (C.G.-M.); (D.D.); (E.L.-D.)
- Ramón y Cajal Institute of Sanitary Research (IRYCIS), 28034 Madrid, Spain
| | - Miguel A. Ortega
- Department of Medicine and Medical Specialities, University of Alcala, Crta N-II km 33.6, 28871 Alcala de Henares, Spain; (S.H.); (A.M.G.-L.); (J.M.); (O.F.-M.); (M.A.O.); (C.G.-M.); (D.D.); (E.L.-D.)
- Ramón y Cajal Institute of Sanitary Research (IRYCIS), 28034 Madrid, Spain
| | - Cielo García-Montero
- Department of Medicine and Medical Specialities, University of Alcala, Crta N-II km 33.6, 28871 Alcala de Henares, Spain; (S.H.); (A.M.G.-L.); (J.M.); (O.F.-M.); (M.A.O.); (C.G.-M.); (D.D.); (E.L.-D.)
- Ramón y Cajal Institute of Sanitary Research (IRYCIS), 28034 Madrid, Spain
| | - David Díaz
- Department of Medicine and Medical Specialities, University of Alcala, Crta N-II km 33.6, 28871 Alcala de Henares, Spain; (S.H.); (A.M.G.-L.); (J.M.); (O.F.-M.); (M.A.O.); (C.G.-M.); (D.D.); (E.L.-D.)
- Ramón y Cajal Institute of Sanitary Research (IRYCIS), 28034 Madrid, Spain
| | - Elisa Lopez-Dolado
- Department of Medicine and Medical Specialities, University of Alcala, Crta N-II km 33.6, 28871 Alcala de Henares, Spain; (S.H.); (A.M.G.-L.); (J.M.); (O.F.-M.); (M.A.O.); (C.G.-M.); (D.D.); (E.L.-D.)
- Service of Rehabilitation, National Hospital for Paraplegic Patients, Carr. de la Peraleda, S/N, 45004 Toledo, Spain;
| | - Melchor Álvarez-Mon
- Department of Medicine and Medical Specialities, University of Alcala, Crta N-II km 33.6, 28871 Alcala de Henares, Spain; (S.H.); (A.M.G.-L.); (J.M.); (O.F.-M.); (M.A.O.); (C.G.-M.); (D.D.); (E.L.-D.)
- Ramón y Cajal Institute of Sanitary Research (IRYCIS), 28034 Madrid, Spain
- Immune System Diseases-Rheumatology Service and Internal Medicine, Prince of Asturias University Hospital (CIBEREHD), 28806 Alcala de Henares, Spain
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10
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Yao N, Li Y, Han J, Wu S, Liu X, Wang Q, Li Z, Shi FD. Microglia-derived CCL20 deteriorates neurogenesis following intraventricular hemorrhage. Exp Neurol 2023; 370:114561. [PMID: 37802382 DOI: 10.1016/j.expneurol.2023.114561] [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: 06/13/2023] [Revised: 09/17/2023] [Accepted: 10/01/2023] [Indexed: 10/09/2023]
Abstract
Intraventricular hemorrhage (IVH) commonly occurs as an extension of intracerebral hemorrhage (ICH) into the brain ventricular system, leading to worse outcomes without effective management. Using a mouse model of IVH, we found that impaired neurogenesis is evident in the subventricular zone (SVZ), along with persistent microglia activation, leukocyte infiltration and cell death. Pharmacological depletion of microglia using PLX3397, an inhibitor of colony stimulating factor 1 receptor (CSF1R), promotes neurogenesis, and alleviated delayed functional impairments in IVH mice. Meanwhile, an elevated level of microglia-derived CC chemokine ligand 20 (CCL20) is observed in the SVZ following IVH, which can induce the upregulation of pro-inflammatory factors in microglia and impair the proliferation and survival of neural stem cells (NSCs) in vitro. Blocking CCL20 in microglia leads to downregulation of protein kinase B (Akt)/mammalian target of rapamycin (mTOR)/the nuclear factor-κB (NF-κB) signaling pathway, which may contribute to CCL20-dependent pro-inflammatory responses and neural injury. These findings demonstrate a detrimental role of microglia in the neurogenesis and neurorepair after IVH in which CCL20 likely plays a role.
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Affiliation(s)
- Nan Yao
- Department of Neurology, Institute of Neuroimmunology, Tianjin Medical University General Hospital, Tianjin, China
| | - Yulin Li
- Department of Neurology, Institute of Neuroimmunology, Tianjin Medical University General Hospital, Tianjin, China
| | - Jinrui Han
- Department of Neurology, Institute of Neuroimmunology, Tianjin Medical University General Hospital, Tianjin, China
| | - Siting Wu
- Department of Neurology, Institute of Neuroimmunology, Tianjin Medical University General Hospital, Tianjin, China
| | - Xin Liu
- Department of Neurology, Institute of Neuroimmunology, Tianjin Medical University General Hospital, Tianjin, China
| | - Qiuyu Wang
- Department of Neurology, Institute of Neuroimmunology, Tianjin Medical University General Hospital, Tianjin, China
| | - Zhiguo Li
- Department of Neurology, Institute of Neuroimmunology, Tianjin Medical University General Hospital, Tianjin, China
| | - Fu-Dong Shi
- Department of Neurology, Institute of Neuroimmunology, Tianjin Medical University General Hospital, Tianjin, China; Center for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.
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11
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Banbury C, Harris G, Clancy M, Blanch RJ, Rickard JJS, Goldberg Oppenheimer P. Window into the mind: Advanced handheld spectroscopic eye-safe technology for point-of-care neurodiagnostic. SCIENCE ADVANCES 2023; 9:eadg5431. [PMID: 37967190 PMCID: PMC10651125 DOI: 10.1126/sciadv.adg5431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 10/19/2023] [Indexed: 11/17/2023]
Abstract
Traumatic brain injury (TBI), a major cause of morbidity and mortality worldwide, is hard to diagnose at the point of care with patients often exhibiting no clinical symptoms. There is an urgent need for rapid point-of-care diagnostics to enable timely intervention. We have developed a technology for rapid acquisition of molecular fingerprints of TBI biochemistry to safely measure proxies for cerebral injury through the eye, providing a path toward noninvasive point-of-care neurodiagnostics using simultaneous Raman spectroscopy and fundus imaging of the neuroretina. Detection of endogenous neuromarkers in porcine eyes' posterior revealed enhancement of high-wave number bands, clearly distinguishing TBI and healthy cohorts, classified via artificial neural network algorithm for automated data interpretation. Clinically, translating into reduced specialist support, this markedly improves the speed of diagnosis. Designed as a hand-held cost-effective technology, it can allow clinicians to rapidly assess TBI at the point of care and identify long-term changes in brain biochemistry in acute or chronic neurodiseases.
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Affiliation(s)
- Carl Banbury
- School of Chemical Engineering, Advanced Nanomaterials Structures and Applications Laboratories, College of Engineering and Physical Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Georgia Harris
- School of Chemical Engineering, Advanced Nanomaterials Structures and Applications Laboratories, College of Engineering and Physical Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Michael Clancy
- School of Chemical Engineering, Advanced Nanomaterials Structures and Applications Laboratories, College of Engineering and Physical Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
- Ministry of Justice, 102 Petty France, Westminster, London, UK
| | - Richard J. Blanch
- Department of Military Surgery and Trauma, Royal Centre for Defence Medicine, Birmingham, UK
- Neuroscience and Ophthalmology, Institute of Inflammation and Ageing, College of Medical and Dental Sciences, Robert Aiken Institute for Clinical Research, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
- Department of Ophthalmology, Queen Elizabeth Hospital Birmingham, UHB NHS Foundation Trust, West Midlands, UK
| | | | - Pola Goldberg Oppenheimer
- School of Chemical Engineering, Advanced Nanomaterials Structures and Applications Laboratories, College of Engineering and Physical Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
- Healthcare Technologies Institute, Institute of Translational Medicine, Mindelsohn Way, Birmingham, B15 2TH, UK
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12
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Morris AR, Gudenschwager Basso EK, Gutierrez-Monreal MA, Arja RD, Kobeissy FH, Janus CG, Wang KKW, Zhu J, Liu AC. Sleep Disruption in a Mouse Model of Chronic Traumatic Brain Injury. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.10.566553. [PMID: 38014315 PMCID: PMC10680804 DOI: 10.1101/2023.11.10.566553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Chronic sleep/wake disturbances are strongly associated with traumatic brain injury (TBI) in patients and are being increasingly recognized. However, the underlying mechanisms are largely understudied and there is an urgent need for animal models of lifelong sleep/wake disturbances. The objective of this study was to develop a chronic TBI rodent model and investigate the lifelong chronic effect of TBI on sleep/wake behavior. We performed repetitive midline fluid percussion injury (rmFPI) in four months old mice and monitored their sleep/wake behavior using the non-invasive PiezoSleep system. The sleep/wake states were recorded before injury (baseline) and then monthly thereafter. We found that TBI mice displayed a significant decrease in sleep duration in both the light and dark phases, beginning at three months post-TBI and continuing throughout the study. Consistent with the sleep phenotype, these TBI mice showed circadian locomotor activity phenotypes and exhibited reduced anxiety-like behavior. TBI mice also gained less weight, and had less lean mass and total body water content, compared to sham controls. Furthermore, TBI mice showed extensive brain tissue loss and increased GFAP and IBA1 levels in the hypothalamus and the vicinity of the injury, indicative of chronic neuropathology. In summary, our study identified a critical time window of TBI pathology and associated circadian and sleep/wake phenotypes. Future studies should leverage this mouse model to investigate the molecular mechanisms underlying the chronic sleep/wake phenotypes following TBI early in life.
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13
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Lörchner H, Cañes Esteve L, Góes ME, Harzenetter R, Brachmann N, Gajawada P, Günther S, Doll N, Pöling J, Braun T. Neutrophils for Revascularization Require Activation of CCR6 and CCL20 by TNFα. Circ Res 2023; 133:592-610. [PMID: 37641931 DOI: 10.1161/circresaha.123.323071] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 08/14/2023] [Indexed: 08/31/2023]
Abstract
BACKGROUND Activation of immune-inflammatory pathways involving TNFα (tumor necrosis factor alpha) signaling is critical for revascularization and peripheral muscle tissue repair after ischemic injury. However, mechanisms of TNFα-driven inflammatory cascades directing recruitment of proangiogenic immune cells to sites of ischemia are unknown. METHODS Muscle tissue revascularization after permanent femoral artery ligation was monitored in mutant mice by laser Doppler imaging and light sheet fluorescence microscopy. TNFα-mediated signaling and the role of the CCL20 (C-C motif chemokine ligand 20)-CCR6 (C-C chemokine receptor 6) axis for formation of new vessels was studied in vitro and in vivo using bone marrow transplantation, flow cytometry, as well as biochemical and molecular biological techniques. RESULTS TNFα-mediated activation of TNFR (tumor necrosis factor receptor) 1 but not TNFR2 was found to be required for postischemic muscle tissue revascularization. Bone marrow-derived CCR6+ neutrophil granulocytes were identified as a previously undescribed TNFα-induced population of proangiogenic neutrophils, characterized by increased expression of VEGFA (vascular endothelial growth factor A). Mechanistically, postischemic activation of TNFR1 induced expression of the CCL20 in vascular cells and promoted translocation of the CCL20 receptor CCR6 to the cell surface of neutrophils, essentially conditioning VEGFA-expressing proangiogenic neutrophils for CCL20-dependent recruitment to sites of ischemia. Moreover, impaired revascularization of ischemic peripheral muscle tissue in diabetic mice was associated with reduced numbers of proangiogenic neutrophils and diminished CCL20 expression. Administration of recombinant CCL20 enhanced recruitment of proangiogenic neutrophils and improved revascularization of diabetic ischemic skeletal muscles, which was sustained by sequential treatment with fluvastatin. CONCLUSIONS We demonstrate that site-specific activation of the CCL20-CCR6 axis via TNFα recruits proangiogenic VEGFA-expressing neutrophils to sites of ischemic injury for initiation of muscle tissue revascularization. The findings provide an attractive option for tissue revascularization, particularly under diabetic conditions.
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Affiliation(s)
- Holger Lörchner
- Department of Cardiac Development and Remodeling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany (H.L., L.C.E., M.E.G., R.H., N.B., S.G., T.B.)
- German Centre for Cardiovascular Research (DZHK), Frankfurt am Main, Germany (H.L., J.P.)
| | - Laia Cañes Esteve
- Department of Cardiac Development and Remodeling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany (H.L., L.C.E., M.E.G., R.H., N.B., S.G., T.B.)
| | - Maria Elisa Góes
- Department of Cardiac Development and Remodeling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany (H.L., L.C.E., M.E.G., R.H., N.B., S.G., T.B.)
| | - Roxanne Harzenetter
- Department of Cardiac Development and Remodeling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany (H.L., L.C.E., M.E.G., R.H., N.B., S.G., T.B.)
| | - Nathalie Brachmann
- Department of Cardiac Development and Remodeling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany (H.L., L.C.E., M.E.G., R.H., N.B., S.G., T.B.)
| | - Praveen Gajawada
- Department of Cardiac Surgery, Kerckhoff Heart Center, Bad Nauheim, Germany (P.G.)
| | - Stefan Günther
- Department of Cardiac Development and Remodeling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany (H.L., L.C.E., M.E.G., R.H., N.B., S.G., T.B.)
| | - Nicolas Doll
- Schüchtermann-Klinik, Bad Rothenfelde, Germany (N.D., J.P.)
| | - Jochen Pöling
- Schüchtermann-Klinik, Bad Rothenfelde, Germany (N.D., J.P.)
- German Centre for Cardiovascular Research (DZHK), Frankfurt am Main, Germany (H.L., J.P.)
| | - Thomas Braun
- Department of Cardiac Development and Remodeling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany (H.L., L.C.E., M.E.G., R.H., N.B., S.G., T.B.)
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14
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Penn C, Mayilsamy K, Zhu XX, Bauer MA, Mohapatra SS, Frisina RD, Mohapatra S. A mouse model of repeated traumatic brain injury-induced hearing impairment: Early cochlear neurodegeneration in the absence of hair cell loss. Hear Res 2023; 436:108832. [PMID: 37364367 DOI: 10.1016/j.heares.2023.108832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 06/05/2023] [Accepted: 06/13/2023] [Indexed: 06/28/2023]
Abstract
PURPOSE Traumatic Brain Injury (TBI) is a major cause of death and disability worldwide. Mounting evidence suggests that even mild TBI injuries, which comprise >75% of all TBIs, can cause chronic post-concussive neurological symptoms, especially when experienced repetitively (rTBI). The most common post-concussive symptoms include auditory dysfunction in the form of hearing loss, tinnitus, or impaired auditory processing, which can occur even in the absence of direct damage to the auditory system at the time of injury. The mechanism by which indirect damage causes loss of auditory function is poorly understood, and treatment is currently limited to symptom management rather than preventative care. We reasoned that secondary injury mechanisms, such as inflammation, may lead to damage of the inner ear and parts of the brain used for hearing after rTBI. Herein, we established a model of indirect damage to the auditory system induced by rTBI and characterized the pathology of hearing loss. METHODS We established a mouse model of rTBI in order to determine a timeline of auditory pathology following multiple mild injuries. Mice were subject to controlled cortical impact at the skull midline once every 48 h, for a total of 5 hits. Auditory function was assessed via the auditory brainstem response (ABR) at various timepoints post injury. Brain and cochleae were collected to establish a timeline of cellular pathology. RESULTS We observed increased ABR thresholds and decreased (ABR) P1 amplitudes in rTBI vs sham animals at 14 days post-impact (dpi). This effect persisted for up to 60 days (dpi). Auditory temporal processing was impaired beginning at 30 dpi. Spiral ganglion degeneration was evident at 14 dpi. No loss of hair cells was detected at this time, suggesting that neuronal loss is one of the earliest notable events in hearing loss caused by this type of rTBI. CONCLUSIONS We conclude that rTBI results in chronic auditory dysfunction via damage to the spiral ganglion which occurs in the absence of any reduction in hair cell number. This suggests early neuronal damage that may be caused by systemic mechanisms similar to those leading to the spread of neuronal death in the brain following TBI. This TBI-hearing loss model provides an important first step towards identifying therapeutic targets to attenuate damage to the auditory system following head injury.
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Affiliation(s)
- Courtney Penn
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA; James A Haley VA Hospital, Tampa, FL 33612, USA
| | - Karthick Mayilsamy
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA; James A Haley VA Hospital, Tampa, FL 33612, USA
| | - Xiao Xia Zhu
- Department of Medical Engineering, College of Engineering and Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA
| | - Mark A Bauer
- Department of Medical Engineering, College of Engineering and Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA
| | - Shyam S Mohapatra
- Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA; James A Haley VA Hospital, Tampa, FL 33612, USA
| | - Robert D Frisina
- Department of Medical Engineering, College of Engineering and Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA.
| | - Subhra Mohapatra
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA; James A Haley VA Hospital, Tampa, FL 33612, USA.
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15
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McCartan R, Gratkowski A, Browning M, Hahn-Townsend C, Ferguson S, Morin A, Bachmeier C, Pearson A, Brown L, Mullan M, Crawford F, Tzekov R, Mouzon B. Human amnionic progenitor cell secretome mitigates the consequence of traumatic optic neuropathy in a mouse model. Mol Ther Methods Clin Dev 2023; 29:303-318. [PMID: 37359418 PMCID: PMC10285248 DOI: 10.1016/j.omtm.2023.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 04/12/2023] [Indexed: 06/28/2023]
Abstract
Traumatic optic neuropathy (TON) is a condition in which acute injury to the optic nerve from direct or indirect trauma results in vision loss. The most common cause of TON is indirect injury to the optic nerve caused by concussive forces that are transmitted to the optic nerve. TON occurs in up to 5% of closed-head trauma patients and there is currently no known effective treatment. One potential treatment option for TON is ST266, a cell-free biological solution containing the secretome of amnion-derived multipotent progenitor (AMP) cells. We investigated the efficacy of intranasal ST266 in a mouse model of TON induced by blunt head trauma. Injured mice treated with a 10-day regimen of ST266 showed an improvement in spatial memory and learning, a significant preservation of retinal ganglion cells, and a decrease in neuropathological markers in the optic nerve, optic tract, and dorsal lateral geniculate nucleus. ST266 treatment effectively downregulated the NLRP3 inflammasome-mediated neuroinflammation pathway after blunt trauma. Overall, treatment with ST266 was shown to improve functional and pathological outcomes in a mouse model of TON, warranting future exploration of ST266 as a cell-free therapeutic candidate for testing in all optic neuropathies.
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Affiliation(s)
- Robyn McCartan
- Roskamp Institute, 2040 Whitfield Avenue, Sarasota, FL 34243, USA
- University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | | | | | | | - Scott Ferguson
- Roskamp Institute, 2040 Whitfield Avenue, Sarasota, FL 34243, USA
| | - Alexander Morin
- Roskamp Institute, 2040 Whitfield Avenue, Sarasota, FL 34243, USA
| | - Corbin Bachmeier
- Roskamp Institute, 2040 Whitfield Avenue, Sarasota, FL 34243, USA
- Bay Pines Veterans’ Hospital, Saint Petersburg, FL 33708, USA
| | - Andrew Pearson
- Roskamp Institute, 2040 Whitfield Avenue, Sarasota, FL 34243, USA
| | - Larry Brown
- Noveome Biotherapeutics, Inc., Pittsburgh, PA 15219, USA
| | - Michael Mullan
- Roskamp Institute, 2040 Whitfield Avenue, Sarasota, FL 34243, USA
| | - Fiona Crawford
- Roskamp Institute, 2040 Whitfield Avenue, Sarasota, FL 34243, USA
- James A. Haley Veterans’ Hospital, Tampa, FL 33612, USA
| | | | - Benoit Mouzon
- Roskamp Institute, 2040 Whitfield Avenue, Sarasota, FL 34243, USA
- James A. Haley Veterans’ Hospital, Tampa, FL 33612, USA
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16
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Penn C, Katnik C, Cuevas J, Mohapatra SS, Mohapatra S. Multispectral optoacoustic tomography (MSOT): Monitoring neurovascular changes in a mouse repetitive traumatic brain injury model. J Neurosci Methods 2023; 393:109876. [PMID: 37150303 PMCID: PMC10388337 DOI: 10.1016/j.jneumeth.2023.109876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 05/01/2023] [Accepted: 05/04/2023] [Indexed: 05/09/2023]
Abstract
BACKGROUND Evidence suggests that mild TBI injuries, which comprise > 75% of all TBIs, can cause chronic post-concussive symptoms, especially when experienced repetitively (rTBI). rTBI is a major cause of cognitive deficit in athletes and military personnel and is associated with neurovascular changes. Current methods to monitor neurovascular changes in detail are prohibitively expensive and invasive for patients with mild injuries. NEW METHOD We evaluated the potential of multispectral optoacoustic tomography (MSOT) to monitor neurovascular changes and assess therapeutic strategies in a mouse model of rTBI. Mice were subjected to rTBI or sham via controlled cortical impact and administered pioglitazone (PG) or vehicle. Oxygenated and deoxygenated hemoglobin were monitored using MSOT. Indocyanine green clearance was imaged via MSOT to evaluate blood-brain-barrier (BBB) integrity. RESULTS Mice subjected to rTBI show a transient increase in oxygenated/total hemoglobin ratio which can be mitigated by PG administration. rTBI mice also show BBB disruption shortly after injury and reduction of oxygenated/total hemoglobin in the chronic stage, neither of which were affected by PG intervention. COMPARISON WITH EXISTING METHODS MSOT imaging has the potential as a noninvasive in vivo imaging method to monitor neurovascular changes and assess therapeutics in mouse models of rTBI. In comparison to standard methods of tracking inflammation and BBB disruption, MSOT can be used multiple times throughout the course of injury without the need for surgery. Thus, MSOT is especially useful in research of rTBI models for screening therapeutics, and with further technological improvements may be extended for use in rTBI patients.
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Affiliation(s)
- Courtney Penn
- James A. Haley Veterans Hospital, 13000 Bruce B Downs Blvd, Tampa, FL 33612, USA; Department of Molecular Medicine, University of South Florida Morsani College of Medicine, 12901 Bruce B Downs Blvd., Tampa, FL 33612, USA
| | - Chris Katnik
- Department of Molecular Pharmacology and Physiology, University of South Florida Morsani College of Medicine, 12901 Bruce B Downs Blvd., Tampa, FL 33612, USA
| | - Javier Cuevas
- Department of Molecular Pharmacology and Physiology, University of South Florida Morsani College of Medicine, 12901 Bruce B Downs Blvd., Tampa, FL 33612, USA
| | - Shyam S Mohapatra
- James A. Haley Veterans Hospital, 13000 Bruce B Downs Blvd, Tampa, FL 33612, USA; Department of Internal Medicine, University of South Florida Morsani College of Medicine, 12901 Bruce B Downs Blvd., Tampa, FL 33612, USA
| | - Subhra Mohapatra
- James A. Haley Veterans Hospital, 13000 Bruce B Downs Blvd, Tampa, FL 33612, USA; Department of Molecular Medicine, University of South Florida Morsani College of Medicine, 12901 Bruce B Downs Blvd., Tampa, FL 33612, USA.
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17
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Gao Y, Xue M, Dai B, Tang Y, Liu J, Zhao C, Meng H, Yan F, Zhu X, Lu Y, Ge Y. Identification of immune associated potential molecular targets in proliferative diabetic retinopathy. BMC Ophthalmol 2023; 23:27. [PMID: 36658547 PMCID: PMC9854219 DOI: 10.1186/s12886-023-02774-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 01/06/2023] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Diabetic retinopathy (DR) is one of the most common microvascular complications of diabetes and causes of blindness in developed countries. Our study was designed to identify immune-related genes involved in the progression of proliferative diabetic retinopathy (PDR). METHODS The "GSE102485" dataset of neovascular membrane samples (NVMs) from type 1 and 2 diabetes mellitus patients was downloaded from the Gene Expression Omnibus database. Functional enrichment analyses, protein-protein interaction network (PPI) construction, and module analysis of immune pathways in NVMs and controls were conducted via Gene Set Enrichment Analysis and Metascape. RESULTS The significantly upregulated hallmark gene sets in DR2 and DR1 groups were involved in five immune pathways. Only CCR4, CXCR6, C3AR1, LPAR1, C5AR1, and P2RY14 were not previously reported in the context of PDR molecular pathophysiology. Except for P2RY14, all of the above were upregulated in retinal samples from experimental diabetes mouse models and human retina microvascular endothelial cells (HRMECs) treated with high glucose (HG) by quantitative Real Time Polymerase Chain Reaction (qRT-PCR). CONCLUSION The genes identified herein provide insight into immune-related differential gene expression during DR progression.
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Affiliation(s)
- Ying Gao
- grid.41156.370000 0001 2314 964XDepartment of Ophthalmology, Affilia Jinling Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu Province China
| | - Min Xue
- Department of Ophthalmology, Anhui NO.2 Provincial People’s Hospital, Hefei, Anhui China
| | - Bing Dai
- grid.417028.80000 0004 1799 2608Department of Vascular Surgery, Tianjin Hospital, Tianjin, China
| | - Yun Tang
- grid.41156.370000 0001 2314 964XDepartment of Ophthalmology, Affilia Jinling Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu Province China
| | - Jingyu Liu
- grid.41156.370000 0001 2314 964XDepartment of Ophthalmology, Affilia Jinling Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu Province China
| | - Changlin Zhao
- grid.41156.370000 0001 2314 964XDepartment of Ophthalmology, Affilia Jinling Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu Province China
| | - Hu Meng
- grid.41156.370000 0001 2314 964XDepartment of Ophthalmology, Affilia Jinling Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu Province China
| | - Feng Yan
- grid.41156.370000 0001 2314 964XDepartment of Ophthalmology, Affilia Jinling Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu Province China
| | - Xiaomin Zhu
- grid.41156.370000 0001 2314 964XDepartment of Ophthalmology, Affilia Jinling Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu Province China
| | - Yan Lu
- grid.41156.370000 0001 2314 964XDepartment of Ophthalmology, Affilia Jinling Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu Province China
| | - Yirui Ge
- grid.41156.370000 0001 2314 964XDepartment of Ophthalmology, Affilia Jinling Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu Province China
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18
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Ye C, Guo X, Wu J, Wang M, Ding H, Ren X. CCL20/CCR6 Mediated Macrophage Activation and Polarization Can Promote Adenoid Epithelial Inflammation in Adenoid Hypertrophy. J Inflamm Res 2022; 15:6843-6855. [PMID: 36583131 PMCID: PMC9793726 DOI: 10.2147/jir.s390210] [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: 09/17/2022] [Accepted: 12/20/2022] [Indexed: 12/24/2022] Open
Abstract
Background Adenoid hypertrophy (AH) is a chronic or acute obstruction-related ailment of the upper respiratory tract that arises as an inflammatory response to exposure of bacteria, viruses or allergies. Activation and polarization of macrophages are key processes in inflammation-related disorders like AH and CCL20/CCR6 axis is a critical therapeutic target. Purpose To determine that CCL20/CCR6 mediated macrophage activation and polarization can promote adenoid epithelial inflammation in AH. Methods To support this claim, CCL20 and CCR6 expressions were studied in clinical AH samples. In addition, the expressions of cytokines such as TNF-α, IL-1β, IL-6, IL-17, IL-10 and TGF-β were analysed. In vitro, human adenoid epithelial cells were co-cultured with polarized THP-1 and T lymphocyte H9 cells to study the expressions of several inflammatory markers. Results The expressions of M1 macrophage markers CD86 and IL-17 were significantly increased, whereas the expressions of M2 macrophage markers CD206 and FOXP3 were significantly decreased. The THP-1 cells were successfully polarized to M0, M1 and M2 macrophages. The survival of macrophages improved after 24 hr of induction and enhanced TGF-β expression was observed. The expressions of the inflammatory cytokines IL-6, TNF-α, IL-1β and CCL20 increased significantly. Conclusion Collectively, these results suggest that the CCL20/CCR6 mediated macrophage activation and polarization into M1-type macrophages can promote adenoid epithelial inflammation in AH. Further studies are warranted to determine the roles of inflammatory markers in the pathophysiology of AH and identifying potential targets.
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Affiliation(s)
- Chenchen Ye
- The First Clinical College, Nanjing University of Chinese Medicine, Nanjing, 210046, People’s Republic of China,Department of Pediatrics, Yixing Hospital of Traditional Chinese Medicine, Yixing, 214200, People’s Republic of China
| | - Xinxue Guo
- Department of Pediatrics, Yixing Hospital of Traditional Chinese Medicine, Yixing, 214200, People’s Republic of China
| | - Jiani Wu
- Department of Pediatrics, Yixing Hospital of Traditional Chinese Medicine, Yixing, 214200, People’s Republic of China
| | - Minhua Wang
- Department of Pediatrics, Yixing Hospital of Traditional Chinese Medicine, Yixing, 214200, People’s Republic of China
| | - Haiyan Ding
- Department of Pediatrics, Yixing Hospital of Traditional Chinese Medicine, Yixing, 214200, People’s Republic of China
| | - Xianzhi Ren
- The First Clinical College, Nanjing University of Chinese Medicine, Nanjing, 210046, People’s Republic of China,Department of Pediatrics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210046, People’s Republic of China,Department of Pediatrics, Jiangsu Provincial Hospital of Traditional Chinese Medicine, Nanjing, 210046, People’s Republic of China,Correspondence: Xianzhi Ren, Department of Pediatrics, Jiangsu Provincial Hospital of Traditional Chinese Medicine, Nanjing, 210046, People’s Republic of China, Email
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19
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Jiang Y, Liu Z, Liao Y, Sun S, Dai Y, Tang Y. Ischemic stroke: From pathological mechanisms to neuroprotective strategies. Front Neurol 2022; 13:1013083. [PMID: 36438975 PMCID: PMC9681807 DOI: 10.3389/fneur.2022.1013083] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Accepted: 10/20/2022] [Indexed: 08/13/2023] Open
Abstract
Ischemic stroke (IS) has complex pathological mechanisms, and is extremely difficult to treat. At present, the treatment of IS is mainly based on intravenous thrombolysis and mechanical thrombectomy, but they are limited by a strict time window. In addition, after intravenous thrombolysis or mechanical thrombectomy, damaged neurons often fail to make ideal improvements due to microcirculation disorders. Therefore, finding suitable pathways and targets from the pathological mechanism is crucial for the development of neuroprotective agents against IS. With the hope of making contributions to the development of IS treatments, this review will introduce (1) how related targets are found in pathological mechanisms such as inflammation, excitotoxicity, oxidative stress, and complement system activation; and (2) the current status and challenges in drug development.
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Affiliation(s)
- Yang Jiang
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Zhenquan Liu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Yan Liao
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Shuyong Sun
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Yajie Dai
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Yibo Tang
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
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20
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Qiu J, Boucher M, Conley G, Li Y, Zhang J, Morriss N, Meehan Iii WP, Mannix R. Traumatic Brain Injury-Related Optic Nerve Damage. J Neuropathol Exp Neurol 2022; 81:344-355. [PMID: 35363316 DOI: 10.1093/jnen/nlac018] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Vision disorders are associated with traumatic brain injury (TBI) in 20%-40% of clinical cases and involve a diverse set of potential symptoms that can present acutely or chronically. Due to its structure and position, the optic nerve is vulnerable to multiple forms of primary injury, which can result in traumatic optic neuropathy (TON). Multiple studies have shown that the optic tract may also be injured during TBI, though data regarding the temporospatial resolution of injury to the optic nerve are sparse. We evaluated the time course of optic nerve injury and visual impairments in our closed head impact acceleration mouse model of mild TBI (mTBI) designed to mimic repetitive injuries experienced in the context of sport. Our results show that inflammation and gliosis occur acutely in response to injury. Additionally, indications of optic nerve degeneration and functional loss of vision beginning at 1-month postinjury, and retinal ganglion cell loss at 7 months, revealed that the degeneration is continuous and permanent. Together, this study demonstrated that the optic nerve is vulnerable to damage during mTBI, which can cause TON and vision loss. These findings will be important for clinicians to consider to determine whether optic nerve is injured in the TBI patients with vision problems.
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Affiliation(s)
- Jianhua Qiu
- From the Division of Emergency Medicine, Boston Children's Hospital, Boston, Massachusetts, USA.,Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
| | - Masen Boucher
- From the Division of Emergency Medicine, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Grace Conley
- From the Division of Emergency Medicine, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Yue Li
- From the Division of Emergency Medicine, Boston Children's Hospital, Boston, Massachusetts, USA.,Department of Neurology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Jingdong Zhang
- From the Division of Emergency Medicine, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Nicholas Morriss
- From the Division of Emergency Medicine, Boston Children's Hospital, Boston, Massachusetts, USA
| | - William P Meehan Iii
- From the Division of Emergency Medicine, Boston Children's Hospital, Boston, Massachusetts, USA.,Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA.,Division of Sports Medicine, Boston Children's Hospital, Boston, Massachusetts, USA.,The Micheli Center for Sports Injury Prevention, Waltham, Massachusetts, USA
| | - Rebekah Mannix
- From the Division of Emergency Medicine, Boston Children's Hospital, Boston, Massachusetts, USA.,Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA
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21
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Blockade on Lin28a Prevents Cognitive Impairment and Disruption of the Blood-Brain Barrier Induced by Chronic Cerebral Hypoperfusion. Biomedicines 2022; 10:biomedicines10040852. [PMID: 35453602 PMCID: PMC9029709 DOI: 10.3390/biomedicines10040852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 03/22/2022] [Accepted: 04/01/2022] [Indexed: 12/10/2022] Open
Abstract
Lin28a is an RNA-binding protein involved in the translation and regulation of multiple mRNAs. Lin28a is overexpressed in animal models of brain injury. Similarly, our preliminary study found increased Lin28a expression levels in the animal models four to seven days after chronic cerebral hypoperfusion. Therefore, this current study aimed to evaluate the effects of modulating Lin28a on cognition and brain functions. Vascular dementia (VaD) was induced in 12-week-old male Wistar rats using permanent bilateral common carotid artery occlusion (BCCAO), and these rats were treated with Lin28a siRNA on the fourth and seventh day after BCCAO. From the 42nd day after BCCAO, cognitive behavioral experiments were performed for two weeks. VaD induced by BCCAO resulted in cognitive impairment and microglial activation. Lin28a expression was upregulated after BCCAO. Lin28a siRNA treatment alleviated cognitive impairment and overexpression of GFAP and Iba-1 in the brain. Furthermore, the treatment ameliorated the VaD-induced damage to the blood-brain barrier (BBB) components, including PECAM-1, PDGFRβ, occludin, claudin-9, and ZO-1. CCR6 activation after VaD, associated with BBB disruption, was diminished by treatment with Lin28a siRNA. The treatment inhibited VaD-induced microglial activity and alleviated BBB damage. Thus, blocking Lin28a may alleviate cognitive impairment caused by VaD.
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22
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Honig MG, Del Mar NA, Henderson DL, O'Neal D, Doty JB, Cox R, Li C, Perry AM, Moore BM, Reiner A. Raloxifene Modulates Microglia and Rescues Visual Deficits and Pathology After Impact Traumatic Brain Injury. Front Neurosci 2021; 15:701317. [PMID: 34776838 PMCID: PMC8585747 DOI: 10.3389/fnins.2021.701317] [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: 04/27/2021] [Accepted: 09/07/2021] [Indexed: 11/29/2022] Open
Abstract
Mild traumatic brain injury (TBI) involves widespread axonal injury and activation of microglia, which initiates secondary processes that worsen the TBI outcome. The upregulation of cannabinoid type-2 receptors (CB2) when microglia become activated allows CB2-binding drugs to selectively target microglia. CB2 inverse agonists modulate activated microglia by shifting them away from the harmful pro-inflammatory M1 state toward the helpful reparative M2 state and thus can stem secondary injury cascades. We previously found that treatment with the CB2 inverse agonist SMM-189 after mild TBI in mice produced by focal cranial blast rescues visual deficits and the optic nerve axon loss that would otherwise result. We have further shown that raloxifene, which is Food and Drug Administration (FDA)-approved as an estrogen receptor modulator to treat osteoporosis, but also possesses CB2 inverse agonism, yields similar benefit in this TBI model through its modulation of microglia. As many different traumatic events produce TBI in humans, it is widely acknowledged that diverse animal models must be used in evaluating possible therapies. Here we examine the consequences of TBI created by blunt impact to the mouse head for visual function and associated pathologies and assess raloxifene benefit. We found that mice subjected to impact TBI exhibited decreases in contrast sensitivity and the B-wave of the electroretinogram, increases in light aversion and resting pupil diameter, and optic nerve axon loss, which were rescued by daily injection of raloxifene at 5 or 10 mg/ml for 2 weeks. Raloxifene treatment was associated with reduced M1 activation and/or enhanced M2 activation in retina, optic nerve, and optic tract after impact TBI. Our results suggest that the higher raloxifene dose, in particular, may be therapeutic for the optic nerve by enhancing the phagocytosis of axonal debris that would otherwise promote inflammation, thereby salvaging less damaged axons. Our current work, together with our prior studies, shows that microglial activation drives secondary injury processes after both impact and cranial blast TBI and raloxifene mitigates microglial activation and visual system injury in both cases. The results thus provide a strong basis for phase 2 human clinical trials evaluating raloxifene as a TBI therapy.
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Affiliation(s)
- Marcia G Honig
- Department of Anatomy and Neurobiology, The University of Tennessee Health Science Center, Memphis, TN, United States
| | - Nobel A Del Mar
- Department of Anatomy and Neurobiology, The University of Tennessee Health Science Center, Memphis, TN, United States
| | - Desmond L Henderson
- Department of Anatomy and Neurobiology, The University of Tennessee Health Science Center, Memphis, TN, United States
| | - Dylan O'Neal
- Department of Anatomy and Neurobiology, The University of Tennessee Health Science Center, Memphis, TN, United States
| | - John B Doty
- Department of Anatomy and Neurobiology, The University of Tennessee Health Science Center, Memphis, TN, United States
| | - Rachel Cox
- Department of Anatomy and Neurobiology, The University of Tennessee Health Science Center, Memphis, TN, United States
| | - Chunyan Li
- Department of Anatomy and Neurobiology, The University of Tennessee Health Science Center, Memphis, TN, United States
| | - Aaron M Perry
- Department of Anatomy and Neurobiology, The University of Tennessee Health Science Center, Memphis, TN, United States
| | - Bob M Moore
- Department of Pharmaceutical Sciences, The University of Tennessee Health Science Center, Memphis, TN, United States
| | - Anton Reiner
- Department of Anatomy and Neurobiology, The University of Tennessee Health Science Center, Memphis, TN, United States.,Department of Ophthalmology, The University of Tennessee Health Science Center, Memphis, TN, United States
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23
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Rajič Bumber J, Pilipović K, Janković T, Dolenec P, Gržeta N, Križ J, Župan G. Repetitive Traumatic Brain Injury Is Associated With TDP-43 Alterations, Neurodegeneration, and Glial Activation in Mice. J Neuropathol Exp Neurol 2021; 80:2-14. [PMID: 33212475 DOI: 10.1093/jnen/nlaa130] [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] [Indexed: 12/13/2022] Open
Abstract
Increasing evidence points to a relationship between repetitive mild traumatic brain injury (mTBI), the Tar DNA binding protein 43 (TDP-43) pathology and some neurodegenerative diseases, but the underlying pathophysiological mechanisms are still unknown. We examined TDP-43 regulation, neurodegeneration, and glial responses following repetitive mTBI in nontransgenic mice and in animals with overexpression of human mutant TDP-43 protein (TDP-43G348C). In the frontal cortices of the injured nontransgenic animals, early TDP-43 cytoplasmatic translocation and overexpression of the protein and its pathological forms were detected. In the injured animals of both genotypes, neurodegeneration and pronounced glial activity were detected in the optic tract. In TDP-43G348C mice, these changes were significantly higher at day 7 after the last mTBI compared with the values in the nontransgenic animals. Results of this study suggest that the changes in the TDP-43 regulation in the frontal cortices of the nontransgenic animals were a transient stress response to the brain injury. Repetitive mTBI did not produce additional TDP-43 dysregulation or neurodegeneration or pronounced gliosis in the frontal cortex of TDP-43G348C mice. Our research also suggests that overexpression of mutated human TDP-43 possibly predisposes the brain to more intense neurodegeneration and glial activation in the optic tract after repetitive mTBI.
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Affiliation(s)
- Jelena Rajič Bumber
- From the Department of Pharmacology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | - Kristina Pilipović
- From the Department of Pharmacology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | - Tamara Janković
- From the Department of Pharmacology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | - Petra Dolenec
- From the Department of Pharmacology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | - Nika Gržeta
- From the Department of Pharmacology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | - Jasna Križ
- Department of Psychiatry and Neuroscience, Faculty of Medicine, University of Laval, Quebec, QC, Canada
| | - Gordana Župan
- From the Department of Pharmacology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
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24
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Pilipović K, Rajič Bumber J, Dolenec P, Gržeta N, Janković T, Križ J, Župan G. Long-Term Effects of Repetitive Mild Traumatic Injury on the Visual System in Wild-Type and TDP-43 Transgenic Mice. Int J Mol Sci 2021; 22:ijms22126584. [PMID: 34205342 PMCID: PMC8235442 DOI: 10.3390/ijms22126584] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 06/11/2021] [Accepted: 06/17/2021] [Indexed: 01/29/2023] Open
Abstract
Little is known about the impairments and pathological changes in the visual system in mild brain trauma, especially repetitive mild traumatic brain injury (mTBI). The goal of this study was to examine and compare the effects of repeated head impacts on the neurodegeneration, axonal integrity, and glial activity in the optic tract (OT), as well as on neuronal preservation, glial responses, and synaptic organization in the lateral geniculate nucleus (LGN) and superior colliculus (SC), in wild-type mice and transgenic animals with overexpression of human TDP-43 mutant protein (TDP-43G348C) at 6 months after repeated closed head traumas. Animals were also assessed in the Barnes maze (BM) task. Neurodegeneration, axonal injury, and gliosis were detected in the OT of the injured animals of both genotypes. In the traumatized mice, myelination of surviving axons was mostly preserved, and the expression of neurofilament light chain was unaffected. Repetitive mTBI did not induce changes in the LGN and the SC, nor did it affect the performance of the BM task in the traumatized wild-type and TDP-43 transgenic mice. Differences in neuropathological and behavioral assessments between the injured wild-type and TDP-43G348C mice were not revealed. Results of the current study suggest that repetitive mTBI was associated with chronic damage and inflammation in the OT in wild-type and TDP-43G348C mice, which were not accompanied with behavioral problems and were not affected by the TDP-43 genotype, while the LGN and the SC remained preserved in the used experimental conditions.
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Affiliation(s)
- Kristina Pilipović
- Department of Basic and Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Rijeka, Braće Branchetta 20, 51 000 Rijeka, Croatia; (K.P.); (J.R.B.); (P.D.); (N.G.); (T.J.)
| | - Jelena Rajič Bumber
- Department of Basic and Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Rijeka, Braće Branchetta 20, 51 000 Rijeka, Croatia; (K.P.); (J.R.B.); (P.D.); (N.G.); (T.J.)
| | - Petra Dolenec
- Department of Basic and Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Rijeka, Braće Branchetta 20, 51 000 Rijeka, Croatia; (K.P.); (J.R.B.); (P.D.); (N.G.); (T.J.)
| | - Nika Gržeta
- Department of Basic and Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Rijeka, Braće Branchetta 20, 51 000 Rijeka, Croatia; (K.P.); (J.R.B.); (P.D.); (N.G.); (T.J.)
| | - Tamara Janković
- Department of Basic and Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Rijeka, Braće Branchetta 20, 51 000 Rijeka, Croatia; (K.P.); (J.R.B.); (P.D.); (N.G.); (T.J.)
| | - Jasna Križ
- Department of Psychiatry and Neuroscience, Faculty of Medicine, University Laval, Québec City, QC G1V 0A6, Canada;
| | - Gordana Župan
- Department of Basic and Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Rijeka, Braće Branchetta 20, 51 000 Rijeka, Croatia; (K.P.); (J.R.B.); (P.D.); (N.G.); (T.J.)
- Correspondence:
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25
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Pérez-Luz S, Loria F, Katsu-Jiménez Y, Oberdoerfer D, Yang OL, Lim F, Muñoz-Blanco JL, Díaz-Nido J. Altered Secretome and ROS Production in Olfactory Mucosa Stem Cells Derived from Friedreich's Ataxia Patients. Int J Mol Sci 2020; 21:ijms21186662. [PMID: 32933002 PMCID: PMC7555998 DOI: 10.3390/ijms21186662] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 09/08/2020] [Indexed: 12/14/2022] Open
Abstract
Friedreich’s ataxia is the most common hereditary ataxia for which there is no cure or approved treatment at present. However, therapeutic developments based on the understanding of pathological mechanisms underlying the disease have advanced considerably, with the implementation of cellular models that mimic the disease playing a crucial role. Human olfactory ecto-mesenchymal stem cells represent a novel model that could prove useful due to their accessibility and neurogenic capacity. Here, we isolated and cultured these stem cells from Friedreich´s ataxia patients and healthy donors, characterizing their phenotype and describing disease-specific features such as reduced cell viability, impaired aconitase activity, increased ROS production and the release of cytokines involved in neuroinflammation. Importantly, we observed a positive effect on patient-derived cells, when frataxin levels were restored, confirming the utility of this in vitro model to study the disease. This model will improve our understanding of Friedreich´s ataxia pathogenesis and will help in developing rationally designed therapeutic strategies.
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Affiliation(s)
- Sara Pérez-Luz
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM) and Departamento de Biología Molecular, Universidad Autónoma de Madrid, Nicolás Cabrera, 1, 28049 Madrid, Spain; (S.P.-L.); (D.O.); (O.-L.Y.); (J.D.-N.)
- Molecular Genetics Unit, Institute of Rare Diseases Research, Institute of Health Carlos III (ISCIII), Ctra. Majadahonda-Pozuelo Km 2,200, 28220 Madrid, Spain
| | - Frida Loria
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM) and Departamento de Biología Molecular, Universidad Autónoma de Madrid, Nicolás Cabrera, 1, 28049 Madrid, Spain; (S.P.-L.); (D.O.); (O.-L.Y.); (J.D.-N.)
- Laboratorio de Apoyo a la Investigación, Hospital Universitario Fundación Alcorcón, Calle Budapest 1, 28922 Madrid, Spain
- Correspondence: ; Tel.: +34-911-964-594
| | - Yurika Katsu-Jiménez
- Karolinska Institutet, Department of Microbiology Tumor and Cell Biology, Solnaväjen 1, 171 77 Stockholm, Sweden;
| | - Daniel Oberdoerfer
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM) and Departamento de Biología Molecular, Universidad Autónoma de Madrid, Nicolás Cabrera, 1, 28049 Madrid, Spain; (S.P.-L.); (D.O.); (O.-L.Y.); (J.D.-N.)
| | - Oscar-Li Yang
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM) and Departamento de Biología Molecular, Universidad Autónoma de Madrid, Nicolás Cabrera, 1, 28049 Madrid, Spain; (S.P.-L.); (D.O.); (O.-L.Y.); (J.D.-N.)
| | - Filip Lim
- Department of Molecular Biology, Autonomous University of Madrid, Francisco Tomás y Valiente 7, 28049 Madrid, Spain;
| | - José Luis Muñoz-Blanco
- Department of Neurology, Hospital Universitario Gregorio Marañón, Dr. Esquerdo 46, 28007 Madrid, Spain;
| | - Javier Díaz-Nido
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM) and Departamento de Biología Molecular, Universidad Autónoma de Madrid, Nicolás Cabrera, 1, 28049 Madrid, Spain; (S.P.-L.); (D.O.); (O.-L.Y.); (J.D.-N.)
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26
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Mayilsamy K, Markoutsa E, Das M, Chopade P, Puro D, Kumar A, Gulick D, Willing AE, Mohapatra SS, Mohapatra S. Treatment with shCCL20-CCR6 nanodendriplexes and human mesenchymal stem cell therapy improves pathology in mice with repeated traumatic brain injury. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2020; 29:102247. [PMID: 32599163 DOI: 10.1016/j.nano.2020.102247] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 06/09/2020] [Accepted: 06/11/2020] [Indexed: 12/14/2022]
Abstract
Traumatic brain injury (TBI) is a devastating neurological disorder, although the underlying pathophysiology is poorly understood. TBI causes blood-brain barrier (BBB) disruption, immune cell trafficking, neuroinflammation and neurodegeneration. CCL20 is an important chemokine mediating neuroinflammation. Human mesenchymal stem cell (hMSC) therapy is a promising regenerative approach but the inflammatory microenvironment in the brain tends to decrease the efficacy of the hMSC transplantation. Reducing the inflammation prior to hMSC therapy improves the outcome. We developed a combined nano-cell therapy by using dendrimers complexed with plasmids (dendriplexes) targeting CCL20 and its sole receptor CCR6 to reduce inflammation followed by hMSC transplantation. Treatment of TBI mice with shRNA conjugated dendriplexes followed by hMSC administration downregulated the inflammatory markers and significantly increased brain-derived neurotrophic factor (BDNF) expression in the cerebral cortex indicating future possible neurogenesis and improved behavioral deficits. Taken together, this nano-cell therapy ameliorates neuroinflammation and promotes brain tissue repair after TBI.
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Affiliation(s)
- Karthick Mayilsamy
- Department of Molecular Medicine, University of South Florida, Tampa, FL, USA; James A Haley VA Hospital, Tampa, FL, USA
| | - Eleni Markoutsa
- Center for Research and Education in Nanobio-engineering, Department of Internal Medicine, University of South Florida, Tampa, FL, USA; College of Pharmacy Graduate Programs, University of South Florida, Tampa, FL, USA; James A Haley VA Hospital, Tampa, FL, USA
| | - Mahasweta Das
- Department of Molecular Medicine, University of South Florida, Tampa, FL, USA; James A Haley VA Hospital, Tampa, FL, USA
| | - Pratik Chopade
- College of Pharmacy Graduate Programs, University of South Florida, Tampa, FL, USA
| | - Durga Puro
- College of Pharmacy Graduate Programs, University of South Florida, Tampa, FL, USA
| | - Akanksha Kumar
- Department of Molecular Medicine, University of South Florida, Tampa, FL, USA
| | - Danielle Gulick
- Department of Molecular Medicine, University of South Florida, Tampa, FL, USA
| | - Alison E Willing
- Department of Neurosurgery and Brain Repair, Center of Excellence for Aging and Brain Repair, University of South Florida, Tampa, FL, USA
| | - Shyam S Mohapatra
- Center for Research and Education in Nanobio-engineering, Department of Internal Medicine, University of South Florida, Tampa, FL, USA; College of Pharmacy Graduate Programs, University of South Florida, Tampa, FL, USA; James A Haley VA Hospital, Tampa, FL, USA
| | - Subhra Mohapatra
- Department of Molecular Medicine, University of South Florida, Tampa, FL, USA; Center for Research and Education in Nanobio-engineering, Department of Internal Medicine, University of South Florida, Tampa, FL, USA; James A Haley VA Hospital, Tampa, FL, USA.
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