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Rodríguez-Palma EJ, Huerta de la Cruz S, Islas-Espinoza AM, Castañeda-Corral G, Granados-Soto V, Khanna R. Nociplastic pain mechanisms and toll-like receptors as promising targets for its management. Pain 2024:00006396-990000000-00571. [PMID: 38595206 DOI: 10.1097/j.pain.0000000000003238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 02/29/2024] [Indexed: 04/11/2024]
Abstract
ABSTRACT Nociplastic pain, characterized by abnormal pain processing without an identifiable organic cause, affects a significant portion of the global population. Unfortunately, current pharmacological treatments for this condition often prove ineffective, prompting the need to explore new potential targets for inducing analgesic effects in patients with nociplastic pain. In this context, toll-like receptors (TLRs), known for their role in the immune response to infections, represent promising opportunities for pharmacological intervention because they play a relevant role in both the development and maintenance of pain. Although TLRs have been extensively studied in neuropathic and inflammatory pain, their specific contributions to nociplastic pain remain less clear, demanding further investigation. This review consolidates current evidence on the connection between TLRs and nociplastic pain, with a specific focus on prevalent conditions like fibromyalgia, stress-induced pain, sleep deprivation-related pain, and irritable bowel syndrome. In addition, we explore the association between nociplastic pain and psychiatric comorbidities, proposing that modulating TLRs can potentially alleviate both pain syndromes and related psychiatric disorders. Finally, we discuss the potential sex differences in TLR signaling, considering the higher prevalence of nociplastic pain among women. Altogether, this review aims to shed light on nociplastic pain, its underlying mechanisms, and its intriguing relationship with TLR signaling pathways, ultimately framing the potential therapeutic role of TLRs in addressing this challenging condition.
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Affiliation(s)
- Erick J Rodríguez-Palma
- Department of Pharmacology and Therapeutics, College of Medicine, University of Florida, Gainesville, FL, United States
- Neurobiology of Pain Laboratory, Departamento de Farmacobiología, Cinvestav, South Campus, Mexico City, Mexico
| | | | - Ana M Islas-Espinoza
- Neurobiology of Pain Laboratory, Departamento de Farmacobiología, Cinvestav, South Campus, Mexico City, Mexico
| | | | - Vinicio Granados-Soto
- Neurobiology of Pain Laboratory, Departamento de Farmacobiología, Cinvestav, South Campus, Mexico City, Mexico
| | - Rajesh Khanna
- Department of Pharmacology and Therapeutics, College of Medicine, University of Florida, Gainesville, FL, United States
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Morioka N, Nakamura Y, Hisaoka-Nakashima K, Nakata Y. High mobility group box-1: A therapeutic target for analgesia and associated symptoms in chronic pain. Biochem Pharmacol 2024; 222:116058. [PMID: 38367818 DOI: 10.1016/j.bcp.2024.116058] [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: 11/24/2023] [Revised: 01/16/2024] [Accepted: 02/12/2024] [Indexed: 02/19/2024]
Abstract
The number of patients with chronic pain continues to increase against the background of an ageing society and a high incidence of various epidemics and disasters. One factor contributing to this situation is the absence of truly effective analgesics. Chronic pain is a persistent stress for the organism and can trigger a variety of neuropsychiatric symptoms. Hence, the search for useful analgesic targets is currently being intensified worldwide, and it is anticipated that the key to success may be molecules involved in emotional as well as sensory systems. High mobility group box-1 (HMGB1) has attracted attention as a therapeutic target for a variety of diseases. It is a very unique molecule having a dual role as a nuclear protein while also functioning as an inflammatory agent outside the cell. In recent years, numerous studies have shown that HMGB1 acts as a pain inducer in primary sensory nerves and the spinal dorsal horn. In addition, HMGB1 can function in the brain, and is involved in the symptoms of depression, anxiety and cognitive dysfunction that accompany chronic pain. In this review, we will summarize recent research and discuss the potential of HMGB1 as a useful drug target for chronic pain.
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Affiliation(s)
- Norimitsu Morioka
- Department of Pharmacology, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan.
| | - Yoki Nakamura
- Department of Pharmacology, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan
| | - Kazue Hisaoka-Nakashima
- Department of Pharmacology, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan
| | - Yoshihiro Nakata
- Department of Pharmacology, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan
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Moraes TR, Veras FP, Barchuk AR, Nogueira ESC, Kanashiro A, Galdino G. Spinal HMGB1 participates in the early stages of paclitaxel-induced neuropathic pain via microglial TLR4 and RAGE activation. Front Immunol 2024; 15:1303937. [PMID: 38384464 PMCID: PMC10879568 DOI: 10.3389/fimmu.2024.1303937] [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: 09/28/2023] [Accepted: 01/17/2024] [Indexed: 02/23/2024] Open
Abstract
Introduction Chemotherapy-induced neuropathic pain (CINP) is one of the main adverse effects of chemotherapy treatment. At the spinal level, CINP modulation involves glial cells that upregulate Toll-like receptor 4 (TLR4) and signaling pathways, which can be activated by pro-inflammatory mediators as the high mobility group box-1 (HMGB1). Objective To evaluate the spinal role of HMGB1 in the paclitaxel-induced neuropathic pain via receptor for advanced glycation end products (RAGE) and TLR4 activation expressed in glial cells. Methods Male C57BL/6 Wild type and TLR4 deficient mice were used in the paclitaxel-induced neuropathic pain model. The nociceptive threshold was measured using the von Frey filament test. In addition, recombinant HMGB1 was intrathecally (i.t.) injected to confirm its nociceptive potential. To evaluate the spinal participation of RAGE, TLR4, NF-kB, microglia, astrocytes, and MAPK p38 in HMGB1-mediated nociceptive effect during neuropathic pain and recombinant HMGB1-induced nociception, the drugs FPS-ZM1, LPS-RS, PDTC, minocycline, fluorocitrate, and SML0543 were respectively administrated by i.t. rout. Microglia, astrocytes, glial cells, RAGE, and TLR4 protein expression were analyzed by Western blot. ELISA immunoassay was also used to assess HMGB1, IL-1β, and TNF-α spinal levels. Results The pharmacological experiments demonstrated that spinal RAGE, TLR4, microglia, astrocytes, as well as MAPK p38 and NF-kB signaling are involved with HMGB1-induced nociception and paclitaxel-induced neuropathic pain. Furthermore, HMGB1 spinal levels were increased during the early stages of neuropathic pain and associated with RAGE, TLR4 and microglial activation. RAGE and TLR4 blockade decreased spinal levels of pro-inflammatory cytokines during neuropathic pain. Conclusion Taken together, our findings indicate that HMGB1 may be released during the early stages of paclitaxel-induced neuropathic pain. This molecule activates RAGE and TLR4 receptors in spinal microglia, upregulating pro-inflammatory cytokines that may contribute to neuropathic pain.
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Affiliation(s)
- Thamyris Reis Moraes
- Pain Neuroimmunobiology Laboratory, Institute of Motricity Sciences, Federal University of Alfenas, Alfenas, Brazil
| | - Flavio Protasio Veras
- Pain Neuroimmunobiology Laboratory, Institute of Motricity Sciences, Federal University of Alfenas, Alfenas, Brazil
| | - Angel Roberto Barchuk
- Integrative Animal Biology Laboratory, Institute of Biomedical Sciences, Federal University of Alfenas, Alfenas, Brazil
| | | | - Alexandre Kanashiro
- Department of Dermatology, University of Wisconsin-Madison, Madison, WI, United States
| | - Giovane Galdino
- Pain Neuroimmunobiology Laboratory, Institute of Motricity Sciences, Federal University of Alfenas, Alfenas, Brazil
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Idoudi S, Bedhiafi T, Pedersen S, Elahtem M, Alremawi I, Akhtar S, Dermime S, Merhi M, Uddin S. Role of HMGB1 and its associated signaling pathways in human malignancies. Cell Signal 2023; 112:110904. [PMID: 37757902 DOI: 10.1016/j.cellsig.2023.110904] [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: 07/07/2023] [Revised: 09/11/2023] [Accepted: 09/22/2023] [Indexed: 09/29/2023]
Abstract
The High-Mobility Group Box-1 (HMGB1), a non-histone chromatin-associated protein, plays a crucial role in cancer growth and response to therapy as it retains a pivotal role in promoting both cell death and survival. HMGB1 has been reported to regulate several signaling pathways engaged in inflammation, genome stability, immune function, cell proliferation, cell autophagy, metabolism, and apoptosis. However, the association between HMGB1 and cancer is complex and its mechanism in tumorigenesis needs to be further elucidated. This review aims to understand the role of HMGB1 in human malignancies and discuss the signaling pathways linked to this process to provide a comprehensive understanding on the association of HMGB1 with carcinogenesis. Further, we will review the role of HMGB1 as a target/biomarker for cancer therapy, the therapeutic strategies used to target this protein, and its potential role in preventing or treating cancers. In light of the recent growing evidence linking HMGB1 to cancer progression, we think that it may be suggested as a novel and emergent therapeutic target for cancer therapy. Hence, HMGB1 warrants paramount investigation to comprehensively map its role in tumorigenesis.
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Affiliation(s)
- Sourour Idoudi
- Department of Pharmaceutical Sciences, College of Pharmacy, QU Health, Qatar University, Doha, Qatar
| | | | - Shona Pedersen
- Department of Basic Medical Science, College of Medicine, QU Health, Qatar University, Doha 2713, Qatar
| | - Mohamed Elahtem
- College of Medicine, QU Health, Qatar University, Doha 2713, Qatar
| | | | - Sabah Akhtar
- Department of Dermatology and venereology, Hamad Medical Corporation, Doha, Qatar; Translational Research Institute and Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Said Dermime
- Translational Cancer Research Facility, Translational Research Institute, Hamad Medical Corporation, Doha, Qatar; National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar; College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, Qatar
| | - Maysaloun Merhi
- Translational Cancer Research Facility, Translational Research Institute, Hamad Medical Corporation, Doha, Qatar; National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar.
| | - Shahab Uddin
- Translational Research Institute and Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar; Laboratory Animal Research Center, Qatar University, Doha, Qatar.
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Abbaszadeh F, Jorjani M, Joghataei MT, Raminfard S, Mehrabi S. Astaxanthin ameliorates spinal cord edema and astrocyte activation via suppression of HMGB1/TLR4/NF-κB signaling pathway in a rat model of spinal cord injury. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2023; 396:3075-3086. [PMID: 37145127 DOI: 10.1007/s00210-023-02512-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 04/25/2023] [Indexed: 05/06/2023]
Abstract
Spinal cord edema is a quick-onset phenomenon with long-term effects. This complication is associated with inflammatory responses, as well as poor motor function. No effective treatment has been developed against spinal edema, which urges the need to provide novel therapies. Astaxanthin (AST) is a fat-soluble carotenoid with anti-inflammatory effects and a promising candidate for treating neurological disorders. This study aimed to investigate the underlying mechanism of AST on the inhibition of spinal cord edema, astrocyte activation, and reduction of inflammatory responsesin a rat compression spinal cord injury (SCI) model. Male rats underwent laminectomy at thoracic 8-9, and the SCI model was induced using an aneurysm clip. After SCI, rats received dimethyl sulfoxide or AST via intrathecal injection. The effects of AST were examined on the motor function, spinal cord edema, integrity of blood-spinal cord barrier (BSCB), and expression of high mobility group box 1 (HMGB1), toll-like receptor 4 (TLR4), nuclear factor-kappa B (NF-κB), glial fibrillary acidic protein (GFAP), and aquaporin-4 (AQP4), and matrix metallopeptidase- 9 (MMP-9) post-SCI. We showed that AST potentially improved the recovery of motor function and inhibited the spinal cord edema via maintaining the integrity of BSCB, reducing the expression of HMGB1, TLR4, and NF-κB, MMP-9 as well as downregulation of astrocyte activation (GFAP) and AQP4 expression. AST improves motor function and reduces edema and inflammatory responses in the spinal tissue. These effects are mediated by suppression of the HMGB1/TLR4/NF-κB signaling pathway, suppressing post-SCI astrocyte activation, and decreasing AQP4 and MMP-9 expression.
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Affiliation(s)
- Fatemeh Abbaszadeh
- Department of Neuroscience, Faculty of Advanced Technologies in Medicine, Iran University of Medical Science, Tehran, Iran
- Neurobiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Masoumeh Jorjani
- Neurobiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
- Department of Pharmacology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Mohammad Taghi Joghataei
- Department of Neuroscience, Faculty of Advanced Technologies in Medicine, Iran University of Medical Science, Tehran, Iran.
- Department of Innovation in Medical Education, Faculty of Medicine, Ottawa University, Ottawa, Canada.
| | - Samira Raminfard
- Neuroimaging and Analysis Group, Research Center for Molecular and Cellular Imaging, Advanced Medical Technologies and Equipment Institue, Tehran University of Medical Sciences, Tehran, Iran
| | - Soraya Mehrabi
- Department of Neuroscience, Faculty of Advanced Technologies in Medicine, Iran University of Medical Science, Tehran, Iran
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Presto P, Ji G, Ponomareva O, Ponomarev I, Neugebauer V. Hmgb1 Silencing in the Amygdala Inhibits Pain-Related Behaviors in a Rat Model of Neuropathic Pain. Int J Mol Sci 2023; 24:11944. [PMID: 37569320 PMCID: PMC10418916 DOI: 10.3390/ijms241511944] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 07/16/2023] [Accepted: 07/20/2023] [Indexed: 08/13/2023] Open
Abstract
Chronic pain presents a therapeutic challenge due to the highly complex interplay of sensory, emotional-affective and cognitive factors. The mechanisms of the transition from acute to chronic pain are not well understood. We hypothesized that neuroimmune mechanisms in the amygdala, a brain region involved in the emotional-affective component of pain and pain modulation, play an important role through high motility group box 1 (Hmgb1), a pro-inflammatory molecule that has been linked to neuroimmune signaling in spinal nociception. Transcriptomic analysis revealed an upregulation of Hmgb1 mRNA in the right but not left central nucleus of the amygdala (CeA) at the chronic stage of a spinal nerve ligation (SNL) rat model of neuropathic pain. Hmgb1 silencing with a stereotaxic injection of siRNA for Hmgb1 into the right CeA of adult male and female rats 1 week after (post-treatment), but not 2 weeks before (pre-treatment) SNL induction decreased mechanical hypersensitivity and emotional-affective responses, but not anxiety-like behaviors, measured 4 weeks after SNL. Immunohistochemical data suggest that neurons are a major source of Hmgb1 in the CeA. Therefore, Hmgb1 in the amygdala may contribute to the transition from acute to chronic neuropathic pain, and the inhibition of Hmgb1 at a subacute time point can mitigate neuropathic pain.
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Affiliation(s)
- Peyton Presto
- Department of Pharmacology and Neuroscience, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA
- Center of Excellence for Translational Neuroscience and Therapeutics, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA
| | - Guangchen Ji
- Department of Pharmacology and Neuroscience, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA
- Center of Excellence for Translational Neuroscience and Therapeutics, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA
| | - Olga Ponomareva
- Department of Pharmacology and Neuroscience, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA
| | - Igor Ponomarev
- Department of Pharmacology and Neuroscience, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA
- Center of Excellence for Translational Neuroscience and Therapeutics, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA
| | - Volker Neugebauer
- Department of Pharmacology and Neuroscience, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA
- Center of Excellence for Translational Neuroscience and Therapeutics, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA
- Garrison Institute on Aging, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA
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Ye S, Mahmood DFD, Ma F, Leng L, Bucala R, Vera PL. Urothelial Oxidative Stress and ERK Activation Mediate HMGB1-Induced Bladder Pain. Cells 2023; 12:1440. [PMID: 37408274 PMCID: PMC10217556 DOI: 10.3390/cells12101440] [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: 04/17/2023] [Revised: 05/08/2023] [Accepted: 05/15/2023] [Indexed: 07/07/2023] Open
Abstract
Activation of intravesical protease activated receptors-4 (PAR4) results in bladder pain through the release of urothelial macrophage migration inhibitory factor (MIF) and high mobility group box-1 (HMGB1). We aimed to identify HMGB1 downstream signaling events at the bladder that mediate HMGB1-induced bladder pain in MIF-deficient mice to exclude any MIF-related effects. We studied whether oxidative stress and ERK activation are involved by examining bladder tissue in mice treated with intravesical disulfide HMGB1 for 1 h and analyzed with Western blot and immunohistochemistry. HMGB1 intravesical treatment increased urothelium 4HNE and phospho-ERK1/2 staining, suggesting that HMGB1 increased urothelial oxidative stress and ERK activation. Furthermore, we examined the functional roles of these events. We evaluated lower abdominal mechanical thresholds (an index of bladder pain) before and 24 h after intravesical PAR4 or disulfide HMGB1. Intravesical pre-treatments (10 min prior) included: N-acetylcysteine amide (NACA, reactive oxygen species scavenger) and FR180204 (FR, selective ERK1/2 inhibitor). Awake micturition parameters (voided volume; frequency) were assessed at 24 h after treatment. Bladders were collected for histology at the end of the experiment. Pre-treatment with NACA or FR significantly prevented HMGB1-induced bladder pain. No significant effects were noted on micturition volume, frequency, inflammation, or edema. Thus, HMGB1 activates downstream urothelial oxidative stress production and ERK1/2 activation to mediate bladder pain. Further dissection of HMGB1 downstream signaling pathway may lead to novel potential therapeutic strategies to treat bladder pain.
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Affiliation(s)
- Shaojing Ye
- Lexington VA Health Care System, Research & Development, Lexington, KY 40502, USA
| | - Dlovan F. D. Mahmood
- Lexington VA Health Care System, Research & Development, Lexington, KY 40502, USA
| | - Fei Ma
- Lexington VA Health Care System, Research & Development, Lexington, KY 40502, USA
| | - Lin Leng
- Department of Internal Medicine, Yale University, New Haven, CT 06510, USA
| | - Richard Bucala
- Department of Internal Medicine, Yale University, New Haven, CT 06510, USA
| | - Pedro L. Vera
- Lexington VA Health Care System, Research & Development, Lexington, KY 40502, USA
- Department of Physiology, University of Kentucky, Lexington, KY 40506, USA
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Yin XY, Tang XH, Wang SX, Zhao YC, Jia M, Yang JJ, Ji MH, Shen JC. HMGB1 mediates synaptic loss and cognitive impairment in an animal model of sepsis-associated encephalopathy. J Neuroinflammation 2023; 20:69. [PMID: 36906561 PMCID: PMC10007818 DOI: 10.1186/s12974-023-02756-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 03/02/2023] [Indexed: 03/13/2023] Open
Abstract
BACKGROUND Microglial activation-mediated neuroinflammation is one of the essential pathogenic mechanisms of sepsis-associated encephalopathy (SAE). Mounting evidence suggests that high mobility group box-1 protein (HMGB1) plays a pivotal role in neuroinflammation and SAE, yet the mechanism by which HMGB1 induces cognitive impairment in SAE remains unclear. Therefore, this study aimed to investigate the mechanism of HMGB1 underlying cognitive impairment in SAE. METHODS An SAE model was established by cecal ligation and puncture (CLP); animals in the sham group underwent cecum exposure alone without ligation and perforation. Mice in the inflachromene (ICM) group were continuously injected with ICM intraperitoneally at a daily dose of 10 mg/kg for 9 days starting 1 h before the CLP operation. The open field, novel object recognition, and Y maze tests were performed on days 14-18 after surgery to assess locomotor activity and cognitive function. HMGB1 secretion, the state of microglia, and neuronal activity were measured by immunofluorescence. Golgi staining was performed to detect changes in neuronal morphology and dendritic spine density. In vitro electrophysiology was performed to detect changes in long-term potentiation (LTP) in the CA1 of the hippocampus. In vivo electrophysiology was performed to detect the changes in neural oscillation of the hippocampus. RESULTS CLP-induced cognitive impairment was accompanied by increased HMGB1 secretion and microglial activation. The phagocytic capacity of microglia was enhanced, resulting in aberrant pruning of excitatory synapses in the hippocampus. The loss of excitatory synapses reduced neuronal activity, impaired LTP, and decreased theta oscillation in the hippocampus. Inhibiting HMGB1 secretion by ICM treatment reversed these changes. CONCLUSIONS HMGB1 induces microglial activation, aberrant synaptic pruning, and neuron dysfunction in an animal model of SAE, leading to cognitive impairment. These results suggest that HMGB1 might be a target for SAE treatment.
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Affiliation(s)
- Xiao-Yu Yin
- Department of Anesthesiology, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, China
| | - Xiao-Hui Tang
- Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China
| | - Shi-Xu Wang
- Department of Anesthesiology, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, China
| | - Yong-Chang Zhao
- Department of Anesthesiology, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, China
| | - Min Jia
- Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China
| | - Jian-Jun Yang
- Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China.
| | - Mu-Huo Ji
- Department of Anesthesiology, The Second Affiliated Hospital, Nanjing Medical University, Nanjing, 210011, China.
| | - Jin-Chun Shen
- Department of Anesthesiology, Jinling Hospital, Medical School of Nanjing University, Nanjing, 210002, China.
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Teodorczyk-Injeyan JA, Khella H, Injeyan HS. Clinical Biomarker of Sterile Inflammation, HMGB1, in Patients with Chronic Non-Specific Low Back Pain: A Pilot Cross-Sectional Study. Life (Basel) 2023; 13:life13020468. [PMID: 36836824 PMCID: PMC9959829 DOI: 10.3390/life13020468] [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: 12/22/2022] [Revised: 01/24/2023] [Accepted: 02/03/2023] [Indexed: 02/11/2023] Open
Abstract
The present study explores whether the inflammatory biomarker of sterile inflammation, high mobility box 1 (HMGB1), contributes to the inflammatory/nociceptive pathophysiology that characterizes chronic non-specific low back pain (LBP). Patients with chronic LBP (N = 10, >3 pain score on a 11-point Visual Analogue Scale, VAS) and asymptomatic participants (N = 12) provided peripheral blood (PB) samples. The proportion of classical CD14++ monocytes within PB leukocytes was determined by flow cytometry. The plasma and extracellular HMGB1 levels in unstimulated adherent cell (AC) cultures were measured using specific immunoassays. HMGB1 localization in ACs was assessed by immunofluorescent staining. The relative gene expression levels of tumor necrosis factor α (TNFα), interleukin-1 beta (IL-1β) and HMGB1 were determined by quantitative polymerase chain reaction (qRT-PCR) in relation to the pain intensity (11-point VAS scores) in patients with LBP. The extracellular release of HMGB1 in the LBP patient AC cultures was significantly elevated (p = 0.001) and accompanied by its relocation into the cytoplasm from the nuclei. The number of CD14++ monocytes in the patients' PB was significantly (p = 0.03) reduced, while the HMGB1 plasma levels remained comparable to those of the controls. The mRNA levels of TNFα, IL-1β and HMGB1 were overexpressed relative to the controls and those of HMGB1 and IL-1β were correlated with the VAS scores at a significant level (p = 0.01-0.03). The results suggest that HMGB1 may play an important role in the pathophysiology of chronic non-specific LBP.
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Affiliation(s)
- Julita A. Teodorczyk-Injeyan
- Graduate Education and Research Programs, Canadian Memorial Chiropractic College, Toronto, ON M2H 3J1, Canada
- Correspondence: ; Tel.: +1-647-805-2030
| | - Heba Khella
- Department of Clinical Education, Canadian Memorial Chiropractic College, Toronto, ON M2H 3J1, Canada
| | - H. Stephen Injeyan
- Graduate Education and Research Programs, Canadian Memorial Chiropractic College, Toronto, ON M2H 3J1, Canada
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Toll-like receptors 2 and 4 stress signaling and sodium-glucose cotransporter-2 in kidney disease. Mol Cell Biochem 2022:10.1007/s11010-022-04652-5. [PMID: 36586092 DOI: 10.1007/s11010-022-04652-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 12/23/2022] [Indexed: 01/01/2023]
Abstract
Kidney disease is the 6th fastest-growing cause of death and a serious global health concern that urges effective therapeutic options. The inflammatory response is an initial reaction from immune and parenchymal cells in kidney diseases. Toll-like receptors (TLR) 2 and 4 are highly expressed by various kidney cells and respond to 'signaling danger' proteins, such as high mobility group box binding protein 1 (HMGB1) and prompt the progression of kidney disease by releasing inflammatory mediators. Burgeoning reports suggest that both SGLT2 and ER stress elevates TLR2/4 signaling via different axis. Moreover, SGLT2 signaling aggravates inflammation under the disease condition by promoting the NLR family pyrin domain-containing three inflammasomes and ER stress. Intriguingly, TLR2/4 downstream adaptors activate ER stress regulators. The above-discussed interactions imply that TLR2/4 does more than immune response during kidney disease. Here, we discuss in detail evidence of the roles and regulation of TLR2/4 in the context of a relationship between ER stress and SGLT2. Also, we highlighted different preclinical studies of SGLT2 inhibitors against TLR2/4 signaling in various kidney diseases. Moreover, we discuss the observational and interventional evidence about the relation between TLR2/4, ER stress, and SGLT2, which may represent the TLR2/4 as a potential therapeutic target for kidney disease.
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11
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Wei G, Pan Y, Wang J, Xiong X, He Y, Xu J. Role of HMGB1 in Vitiligo: Current Perceptions and Future Perspectives. CLINICAL, COSMETIC AND INVESTIGATIONAL DERMATOLOGY 2022; 15:2177-2186. [PMID: 36267690 PMCID: PMC9576603 DOI: 10.2147/ccid.s381432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 09/23/2022] [Indexed: 11/05/2022]
Abstract
Vitiligo is a chronic depigmenting disorder of the skin and mucosa caused by the destruction of epidermal melanocytes. Although the exact mechanism has not been elucidated, studies have shown that oxidative stress plays an important role in the pathogenesis of vitiligo. High mobility group box protein B1 (HMGB1) is a major nonhistone protein and an extracellular proinflammatory or chemotactic molecule that is actively secreted or passively released by necrotic cells. Recent data showed that HMGB1 is overexpressed in both blood and lesional specimens from vitiligo patients. Moreover, oxidative stress triggers the release of HMGB1 from keratinocytes and melanocytes, indicating that HMGB1 may participate in the pathological process of vitiligo. Overall, this review mainly focuses on the role of HMGB1 in the potential mechanisms underlying vitiligo depigmentation under oxidative stress. In this review, we hope to provide new insights into vitiligo pathogenesis and treatment strategies.
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Affiliation(s)
- Guangmin Wei
- Department of Dermatology, Medical Center Hospital of Qionglai City, Qionglai, Sichuan, People’s Republic of China
| | - Yinghao Pan
- Department of Dermatology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, People’s Republic of China
| | - Jingying Wang
- Department of Dermatology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, People’s Republic of China
| | - Xia Xiong
- Department of Dermatology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, People’s Republic of China
| | - Yuanmin He
- Department of Dermatology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, People’s Republic of China
| | - Jixiang Xu
- Department of Dermatology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, People’s Republic of China,Correspondence: Jixiang Xu, Department of Dermatology, The Affiliated Hospital of Southwest Medical University, No. 25 of Taiping Road, Luzhou, Sichuan, 646000, People’s Republic of China, Email
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12
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Melatonin attenuates bone cancer pain via the SIRT1/HMGB1 pathway. Neuropharmacology 2022; 220:109254. [PMID: 36122662 DOI: 10.1016/j.neuropharm.2022.109254] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 08/08/2022] [Accepted: 09/08/2022] [Indexed: 11/23/2022]
Abstract
Bone cancer pain (BCP), which seriously affects the quality of life of patients, remains a clinically challenging problem. Hence, there is an urgent need to investigate new mechanisms and develop new therapeutics to relieve BCP. In the present study, we investigated the analgesic effect of melatonin on BCP and the underlying mechanisms. Male C57BL/6 mice were used to establish BCP models. We found that the levels of sirtuin 1 (SIRT1) and nucleus-high mobility group box-1 (HMGB1) were decreased, whilst the levels of HMGB1, cytoplasm-HMGB1 and inflammatory cytokines (TNF-α, IL-6, IL-1β) were increased in the spinal cord of BCP mice on days 7, 14 and 21 after implantation compared with the levels in sham mice. Intrathecal administration of melatonin dose-dependently increased values of PWMT and TWL compared with the BCP group. However, intrathecal administration of EX527 (a selective SIRT1 antagonist) reversed the analgesic effect of melatonin. Moreover, mice in the melatonin group exhibited an increase in SIRT1 and nucleus-HMGB1, whilst there was a decrease in HMGB1, cytoplasm-HMGB1, rage, acetyl-HMGB1 and inflammatory cytokines compared with those in BCP mice. EX527 also reversed these changes. Furthermore, SIRT1 physically interacted with HMGB1 in the BCP mice. In conclusion, intrathecal administration of melatonin attenuates BCP through SIRT1-dependent inhibition of HMGB1 translocation and inflammatory cytokines. Melatonin may be a promising drug for the clinical treatment of BCP.
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13
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Du Y, Xu CL, Yu J, Liu K, Lin SD, Hu TT, Qu FH, Guo F, Lou GD, Nishibori M, Hu WW, Chen Z, Zhang SH. HMGB1 in the mPFC governs comorbid anxiety in neuropathic pain. J Headache Pain 2022; 23:102. [PMID: 35974316 PMCID: PMC9382735 DOI: 10.1186/s10194-022-01475-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 08/09/2022] [Indexed: 12/20/2022] Open
Abstract
Background Whether neuroinflammation causes comorbid mood disorders in neuropathic pain remains elusive. Here we investigated the role of high mobility group box 1 protein (HMGB1), a proinflammatory cytokine, in the medial prefrontal cortex (mPFC) in anxiety comorbidity of neuropathic pain. Methods Neuropathic pain was induced by partial transection of the infraorbital nerve (p-IONX) or partial sciatic nerve ligation (PSL) in mice and evaluated by measuring nociceptive thresholds to mechanical and heat stimulation. Anxiety-like behaviors were assessed by elevated plus maze, light dark box and open field tests. Aversive or anti-aversive effect was detected by conditioned place preference test. Neuronal activity was evaluated by single-unit and patch clamp recordings. The contribution of mPFC pyramidal neurons to anxiety was further examined by selectively inhibiting them by optogenetics. HMGB1 expression was measured by immunohistochemistry and western blotting. Antagonism of HMGB1 was achieved by injecting anti-HMGB1 monoclonal antibody (mAb) intracerebrally or intraperitoneally. Results Anxiety-like behaviors were presented earlier after p-IONX than after PSL. HMGB1 expression was upregulated in the mPFC temporally in parallel to anxiety onset, rather than in other regions associated with anxiety. The upregulation of HMGB1 expression and its translocation from the nucleus to cytoplasm in the mPFC occurred predominantly in neurons and were accompanied with activation of microglia and astrocytes. Infusion of anti-HMGB1 mAb into the mPFC during the early and late phases after either p-IONX or PSL alleviated anxiety-like behaviors and aversion without changing pain sensitization, while local infusion of exogenous ds-HMGB1, the proinflammatory form of HMGB1, into the mPFC induced anxiety and aversion but not pain sensitization in naïve mice. In addition to reversing established pain sensitization and anxiety simultaneously, intraperitoneal injection of anti-HMGB1 mAb reduced HMGB1 upregulation and suppressed the hyperexcitability of layer 2/3 pyramidal neurons in the mPFC after p-IONX. Moreover, optogenetic inhibition of mPFC pyramidal neurons alleviated anxiety in p-IONX mice. Conclusion These results demonstrate that HMGB1 in the mPFC drives and maintains anxiety comorbidity in neuropathic pain by increasing the excitability of layer 2/3 pyramidal neurons, and justify antagonism of HMGB1, e.g., neutralization by mAb, as a promising therapeutic strategy for neuropathic pain with anxiety comorbidity. Supplementary Information The online version contains supplementary material available at 10.1186/s10194-022-01475-z.
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Affiliation(s)
- Yu Du
- Department of Pharmacology and Department of Anesthesiology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China.,Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Ceng-Lin Xu
- Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Jie Yu
- Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Keyue Liu
- Department of Pharmacology, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine, Okayama, 700-8558, Japan
| | - Shi-Da Lin
- Department of Pharmacology and Department of Anesthesiology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Ting-Ting Hu
- Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Feng-Hui Qu
- Department of Pharmacology and Department of Anesthesiology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Fang Guo
- Department of Pharmacology and Department of Anesthesiology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Guo-Dong Lou
- Department of Pharmacy, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, 310016, China
| | - Masahiro Nishibori
- Department of Pharmacology, Dentistry and Pharmaceutical Sciences, Okayama University Graduate School of Medicine, Okayama, 700-8558, Japan
| | - Wei-Wei Hu
- Department of Pharmacology and Department of Anesthesiology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China.
| | - Zhong Chen
- Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province, College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China.
| | - Shi-Hong Zhang
- Department of Pharmacology and Department of Anesthesiology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China.
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14
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Leisengang S, Gluding D, Hörster J, Peek V, Ott D, Rummel C, Schmidt MJ. Expression of adipokines and adipocytokines by epidural adipose tissue in cauda equina syndrome in dogs. J Vet Intern Med 2022; 36:1373-1381. [PMID: 35838307 PMCID: PMC9308421 DOI: 10.1111/jvim.16483] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 06/15/2022] [Indexed: 11/28/2022] Open
Abstract
Background Compression of epidural adipose tissue (EAT) within the scope of cauda equina syndrome (CES) could lead to an enhanced expression of inflammatory mediators, possibly contributing to pain amplification in dogs. Objectives To analyze expression of inflammatory adipo(‐cyto)kines within the EAT of dogs with CES. Animals Client‐owned dogs: 15 dogs with CES and 9 dogs euthanized for unrelated medical reasons (controls). Methods Prospective, experimental study. Epidural adipose tissue and subcutaneous adipose tissue were collected during dorsal laminectomy and used for real‐time quantitative polymerase chain reaction. Tissue explants were cultured for measurements of inflammation‐induced release of cytokines. Results Results show a CES‐associated upregulation of the cytokines tumor necrosis factor alpha (TNFα: mean ± SD: 18.88 ± 11.87, 95% CI: 10.90‐26.86 vs 9.66 ± 5.22, 95% CI: 5.29‐14.02, *: P = .04) and interleukin‐ (IL‐) 10 (20.1 ± 9.15, 95% CI: 14.82‐25.39 vs 11.52 ± 6.82, 95% CI: 5.82‐17.22, *: P = .03), whereas the expression of the adipokine leptin was attenuated in EAT of dogs with CES (3.07 ± 2.29, 95% CI: 1.80‐3.34 vs 9.83 ± 8.42, 95% CI: 3.36‐16.30, **: P = .007). Inflammatory stimulation of EAT explant cultures resulted in an enhanced release of IL‐6 (LPS: 5491.55 ± 4438, 95% CI: 833.7‐10 149; HMGB1: 1001.78 ± 522.2, 95% CI: 518.8‐1485; PBS: 310.9 ± 98.57, 95% CI: 228.5‐393.3, ***: P < .001). Conclusion and Clinical Importance Expression profile of inflammatory adipo(‐cyto)kines by EAT is influenced from compressive forces acting in dogs with CES and might contribute to amplification of pain.
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Affiliation(s)
- Stephan Leisengang
- Institute of Veterinary Physiology and Biochemistry, Justus Liebig University Giessen, Giessen, Germany.,Center for Mind, Brain and Behavior - CMBB, Philipps University Marburg & Justus Liebig University Giessen, Giessen, Germany.,Institute of Medical Psychology and Behavioral Immunobiology, Center for Translational Neuro- and Behavioral Sciences (C-TNBS), University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Dennis Gluding
- Department of Veterinary Clinical Sciences, Clinic for Small Animals (Surgery), Justus Liebig University Giessen, Giessen, Germany
| | - Julia Hörster
- Department of Veterinary Clinical Sciences, Small Animal Clinic - Neurosurgery, Neuroradiology and Clinical Neurology, Justus Liebig University Giessen, Giessen, Germany
| | - Verena Peek
- Institute of Veterinary Physiology and Biochemistry, Justus Liebig University Giessen, Giessen, Germany
| | - Daniela Ott
- Institute of Veterinary Physiology and Biochemistry, Justus Liebig University Giessen, Giessen, Germany
| | - Christoph Rummel
- Institute of Veterinary Physiology and Biochemistry, Justus Liebig University Giessen, Giessen, Germany.,Center for Mind, Brain and Behavior - CMBB, Philipps University Marburg & Justus Liebig University Giessen, Giessen, Germany
| | - Martin J Schmidt
- Department of Veterinary Clinical Sciences, Small Animal Clinic - Neurosurgery, Neuroradiology and Clinical Neurology, Justus Liebig University Giessen, Giessen, Germany
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15
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Ye S, Ma F, Mahmood DFD, Meyer-Siegler KL, Leng L, Bucala R, Vera PL. Bladder Oxidative Stress and HMGB1 Release Contribute to PAR4-Mediated Bladder Pain in Mice. Front Syst Neurosci 2022; 16:882493. [PMID: 35645739 PMCID: PMC9135998 DOI: 10.3389/fnsys.2022.882493] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 04/05/2022] [Indexed: 11/13/2022] Open
Abstract
Activation of intravesical PAR4 receptors leads to bladder hyperalgesia (BHA) through release of urothelial macrophage migration inhibitory factor (MIF) and urothelial high mobility group box-1 (HMGB1). MIF deficiency and/or MIF antagonism at the bladder block BHA in mice yet the mechanisms are not clear. Since oxidative stress and ERK phosphorylation are involved in MIF signaling we hypothesized that oxidative stress and/or ERK signaling, activated by MIF release, promote intravesical HMGB1 release to induce BHA. We induced BHA by intravesical PAR4 infusion in female C57BL/6 mice. Mechanical sensitivity was evaluated by measuring abdominal von Frey (VF) 50% thresholds before (baseline) and 24 h post-infusion. Intravesical pre-treatment (10 min infusion prior to PAR4) with N-acetylcysteine amide (NACA; reactive-oxygen species scavenger; 3 mg in 50 μl), FR180204 (selective ERK1/2 inhibitor; 200 μg in 50 μl), ethyl pyruvate (EP; HMGB1 release inhibitor; 600 μg in 50 μl), or diluent controls (50 μl) tested the effects of pre-treatment on PAR4-induced BHA. Intravesical fluid was collected after each treatment and HMGB1 concentration was measured using ELISA. Awake micturition parameters (volume and frequency) were assessed at the end of the experiments. Bladders were collected and examined for histological signs of edema and inflammation. Pre-treatment with PBS followed by PAR4 induced BHA in mice but PBS followed by scrambled peptide did not. Pre-treatment with NACA or EP partially blocked PAR4-induced BHA while FR180204 had no effect. A significant correlation between intravesical HMGB1 levels and 50% VF thresholds was observed. All PAR4 treated groups had increased levels of HMGB1 in the intravesical fluid compared to PBS-Scrambled group although not statistically significant. No significant effects were noted on awake micturition volume, micturition frequency or histological evidence of bladder edema or inflammation. Our results show that intravesical antagonism of bladder reactive-oxygen species accumulation was effective in reducing PAR4-induced bladder pain. The correlation between intravesical levels of HMGB1 and bladder pain indicates that released HMGB1 is pivotal to bladder pain. Thus, modulating events in the MIF signaling cascade triggered by PAR4 activation (including bladder oxidative stress and HMGB1 release) warrant further investigation as possible therapeutic strategies.
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Affiliation(s)
- Shaojing Ye
- Lexington VA Health Care System, Research and Development, Lexington, KY, United States
| | - Fei Ma
- Lexington VA Health Care System, Research and Development, Lexington, KY, United States
| | - Dlovan F. D. Mahmood
- Lexington VA Health Care System, Research and Development, Lexington, KY, United States
| | | | - Lin Leng
- Department of Internal Medicine, Yale University, New Haven, CT, United States
| | - Richard Bucala
- Department of Internal Medicine, Yale University, New Haven, CT, United States
| | - Pedro L. Vera
- Lexington VA Health Care System, Research and Development, Lexington, KY, United States
- Department of Physiology, University of Kentucky, Lexington, KY, United States
- *Correspondence: Pedro L. Vera
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16
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Sato F, Nakamura Y, Ma S, Kochi T, Hisaoka-Nakashima K, Wang D, Liu K, Wake H, Nishibori M, Morioka N. Central high mobility group box-1 induces mechanical hypersensitivity with spinal microglial activation in a mouse model of hemi-Parkinson's disease. Biomed Pharmacother 2021; 145:112479. [PMID: 34915668 DOI: 10.1016/j.biopha.2021.112479] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 11/30/2021] [Accepted: 11/30/2021] [Indexed: 02/07/2023] Open
Abstract
Parkinson's disease (PD) patients often complain of pain, but this problem has been neglected and is poorly understood. High mobility group box-1 (HMGB1), an alarmin/damage-associated molecular patterns protein, is increased in the cerebrospinal fluid in PD patients. However, little is known of the relationship between HMGB1 and pain associated with PD. Here, we investigated the role of central HMGB1 in the regulation of nociceptive hypersensitivity in a mouse model of PD. Male ddY mice were microinjected unilaterally with 6-hydroxydopamine (6OHDA) into the striatum. These hemi-PD mice were treated with anti-HMGB1 neutralizing antibody (nAb; 10 µg in 10 µL) by intranasal (i.n.) administration. The mechanical hypersensitivity of the hind paws was evaluated with the von Frey test. Spinal microglial activity was analyzed by immunostaining for ionized calcium-binding adapter molecule 1. The 6OHDA-administered mice displayed unilateral loss of dopamine neurons in the substantia nigra and mechanical hypersensitivity in both hind paws. Moreover, spinal microglia were activated in these hemi-PD mice. Twenty-eight days after the 6OHDA injections, repeated i.n., but not systemic, treatment with anti-HMGB1 nAb inhibited the bilateral mechanical hypersensitivity and spinal microglial activation. However, the anti-HMGB1 nAb did not ameliorate the dopamine neuron loss. Moreover, intracerebroventricular injection with recombinant HMGB1 induced mechanical hypersensitivity. These findings indicate that HMGB1 is involved in the maintenance of nociceptive symptoms in hemi-PD mice via spinal microglial activation. Therefore, central HMGB1 may have potential as a therapeutic target for pain associated with PD.
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Affiliation(s)
- Fumiaki Sato
- Department of Pharmacology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan
| | - Yoki Nakamura
- Department of Pharmacology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan.
| | - Simeng Ma
- Department of Pharmacology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan
| | - Takahiro Kochi
- Department of Pharmacology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan; Department of Dental Anesthesiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan
| | - Kazue Hisaoka-Nakashima
- Department of Pharmacology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan
| | - Dengli Wang
- Department of Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Japan
| | - Keyue Liu
- Department of Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Japan
| | - Hidenori Wake
- Department of Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Japan; Department of Pharmacology, Faculty of Medicine, Kindai University, Japan
| | - Masahiro Nishibori
- Department of Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Japan
| | - Norimitsu Morioka
- Department of Pharmacology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan.
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17
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Bioactive Flavonoids Icaritin and Icariin Protect against Cerebral Ischemia-Reperfusion-Associated Apoptosis and Extracellular Matrix Accumulation in an Ischemic Stroke Mouse Model. Biomedicines 2021; 9:biomedicines9111719. [PMID: 34829948 PMCID: PMC8615444 DOI: 10.3390/biomedicines9111719] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 11/10/2021] [Accepted: 11/18/2021] [Indexed: 01/01/2023] Open
Abstract
Stroke, which is the second leading cause of mortality in the world, is urgently needed to explore the medical strategies for ischemic stroke treatment. Both icariin (ICA) and icaritin (ICT) are the major active flavonoids extracted from Herba epimedii that have been regarded as the neuroprotective agents in disease models. In this study, we aimed to investigate and compare the neuroprotective effects of ICA and ICT in a middle cerebral artery occlusion (MCAO) mouse model. Male ICR mice were pretreated with both ICA and ICT, which ameliorated body weight loss, neurological injury, infarct volume, and pathological change in acute ischemic stroke mice. Furthermore, administration of both ICA and ICT could also protect against neuronal cell apoptotic death, oxidative and nitrosative stress, lipid peroxidation, and extracellular matrix (ECM) accumulation in the brains. The neuroprotective effects of ICT are slightly better than that of ICA in acute cerebral ischemic stroke mice. These results suggest that pretreatment with both ICA and ICT improves the neuronal cell apoptosis and responses of oxidative/nitrosative stress and counteracts the ECM accumulation in the brains of acute cerebral ischemic stroke mice. Both ICA and ICT treatment may serve as a useful therapeutic strategy for acute ischemic stroke.
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Yang H, Andersson U, Brines M. Neurons Are a Primary Driver of Inflammation via Release of HMGB1. Cells 2021; 10:cells10102791. [PMID: 34685772 PMCID: PMC8535016 DOI: 10.3390/cells10102791] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 10/07/2021] [Accepted: 10/14/2021] [Indexed: 12/20/2022] Open
Abstract
Recent data show that activation of nociceptive (sensory) nerves turns on localized inflammation within the innervated area in a retrograde manner (antidromically), even in the absence of tissue injury or molecular markers of foreign invaders. This neuroinflammatory process is activated and sustained by the release of neuronal products, such as neuropeptides, with the subsequent amplification via recruitment of immunocompetent cells, including macrophages and lymphocytes. High mobility group box 1 protein (HMGB1) is a highly conserved, well characterized damage-associated molecular pattern molecule expressed by many cells, including nociceptors and is a marker of inflammatory diseases. In this review, we summarize recent evidence showing that neuronal HMGB1 is required for the development of neuroinflammation, as knock out limited to neurons or its neutralization via antibodies ameliorate injury in models of nerve injury and of arthritis. Further, the results of study show that HMGB1 is actively released during neuronal depolarization and thus plays a previously unrecognized key etiologic role in the initiation and amplification of neuroinflammation. Direct targeting of HMGB1 is a promising approach for novel anti-inflammatory therapy.
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Affiliation(s)
- Huan Yang
- Institute for Bioelectronic Medicine, The Feinstein Institutes for Medical Research, 350 Community Drive, Manhasset, NY 11030, USA;
- Correspondence: (H.Y.); (U.A.)
| | - Ulf Andersson
- Department of Women’s and Children’s Health, Karolinska Institute, Karolinska University Hospital, 17176 Stockholm, Sweden
- Correspondence: (H.Y.); (U.A.)
| | - Michael Brines
- Institute for Bioelectronic Medicine, The Feinstein Institutes for Medical Research, 350 Community Drive, Manhasset, NY 11030, USA;
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19
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Sensory Neuron TLR4 mediates the development of nerve-injury induced mechanical hypersensitivity in female mice. Brain Behav Immun 2021; 97:42-60. [PMID: 34174335 PMCID: PMC8453057 DOI: 10.1016/j.bbi.2021.06.011] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 06/08/2021] [Accepted: 06/18/2021] [Indexed: 02/07/2023] Open
Abstract
Recent studies have brought to light the necessity to discern sex-specific differences in various pain states and different cell-types that mediate these differences. These studies have uncovered the role of neuroimmune interactions to mediate pain states in a sex-specific fashion. While investigating immune function in pain development, we discovered that females utilize immune components of sensory neurons to mediate neuropathic pain development. We utilized two novel transgenic mouse models that eitherrestore expression of toll-like receptor (TLR) 4 inNav1.8 nociceptors on a TLR4-null background (TLR4LoxTB) or remove TLR4 specifically from Nav1.8 nociceptors (TLR4fl/fl). After spared nerve injury (SNI), a model of neuropathic injury, we observed a robust female-specific onset of mechanical hypersensitivity in our transgenic animals. Female Nav1.8-TLR4fl/fl knockout animals were less mechanically sensitive than cre-negative TLR4fl/fl littermates. Conversely, female Nav1.8-TLR4LoxTB reactivated animals were as mechanically sensitive as their wild-type counterparts. These sex and cell-specific effects were not recapitulated in male animals of either strain. Additionally, we find the danger associated molecular pattern, high mobility group box-1 (HGMB1), a potent TLR4 agonist, localization and ATF3 expression in females is dependent on TLR4 expression in dorsal root ganglia (DRG) populations following SNI. These experiments provide novel evidence toward sensory neuron specific modulation of pain in a sex-dependent manner.
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20
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Tsubota M, Miyazaki T, Ikeda Y, Hayashi Y, Aokiba Y, Tomita S, Sekiguchi F, Wang D, Nishibori M, Kawabata A. Caspase-Dependent HMGB1 Release from Macrophages Participates in Peripheral Neuropathy Caused by Bortezomib, a Proteasome-Inhibiting Chemotherapeutic Agent, in Mice. Cells 2021; 10:cells10102550. [PMID: 34685531 PMCID: PMC8533714 DOI: 10.3390/cells10102550] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 09/21/2021] [Accepted: 09/23/2021] [Indexed: 02/06/2023] Open
Abstract
Given the role of macrophage-derived high mobility group box 1 (HMGB1) in chemotherapy-induced peripheral neuropathy (CIPN) caused by paclitaxel, we analyzed the role of HMGB1 and macrophages in the CIPN caused by bortezomib, a proteasome-inhibiting chemotherapeutic agent used for the treatment of multiple myeloma. Repeated administration of bortezomib caused CIPN accompanied by early-stage macrophage accumulation in the dorsal root ganglion. This CIPN was prevented by an anti-HMGB1-neutralizing antibody, thrombomodulin alfa capable of accelerating thrombin-dependent degradation of HMGB1, antagonists of the receptor for advanced glycation end-products (RAGE) and C-X-C motif chemokine receptor 4 (CXCR4), known as HMGB1-targeted membrane receptors, or macrophage depletion with liposomal clodronate, as reported in a CIPN model caused by paclitaxel. In macrophage-like RAW264.7 cells, bortezomib as well as MG132, a well-known proteasome inhibitor, caused HMGB1 release, an effect inhibited by caspase inhibitors but not inhibitors of NF-κB and p38 MAP kinase, known to mediate paclitaxel-induced HMGB1 release from macrophages. Bortezomib increased cleaved products of caspase-8 and caused nuclear fragmentation or condensation in macrophages. Repeated treatment with the caspase inhibitor prevented CIPN caused by bortezomib in mice. Our findings suggest that bortezomib causes caspase-dependent release of HMGB1 from macrophages, leading to the development of CIPN via activation of RAGE and CXCR4.
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Affiliation(s)
- Maho Tsubota
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University, 3-4-1 Kowakae, Higashiosaka 577-8502, Japan; (M.T.); (T.M.); (Y.I.); (Y.H.); (Y.A.); (S.T.); (F.S.)
| | - Takaya Miyazaki
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University, 3-4-1 Kowakae, Higashiosaka 577-8502, Japan; (M.T.); (T.M.); (Y.I.); (Y.H.); (Y.A.); (S.T.); (F.S.)
| | - Yuya Ikeda
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University, 3-4-1 Kowakae, Higashiosaka 577-8502, Japan; (M.T.); (T.M.); (Y.I.); (Y.H.); (Y.A.); (S.T.); (F.S.)
| | - Yusuke Hayashi
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University, 3-4-1 Kowakae, Higashiosaka 577-8502, Japan; (M.T.); (T.M.); (Y.I.); (Y.H.); (Y.A.); (S.T.); (F.S.)
| | - Yui Aokiba
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University, 3-4-1 Kowakae, Higashiosaka 577-8502, Japan; (M.T.); (T.M.); (Y.I.); (Y.H.); (Y.A.); (S.T.); (F.S.)
| | - Shiori Tomita
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University, 3-4-1 Kowakae, Higashiosaka 577-8502, Japan; (M.T.); (T.M.); (Y.I.); (Y.H.); (Y.A.); (S.T.); (F.S.)
| | - Fumiko Sekiguchi
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University, 3-4-1 Kowakae, Higashiosaka 577-8502, Japan; (M.T.); (T.M.); (Y.I.); (Y.H.); (Y.A.); (S.T.); (F.S.)
| | - Dengli Wang
- Department of Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan; (D.W.); (M.N.)
| | - Masahiro Nishibori
- Department of Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan; (D.W.); (M.N.)
| | - Atsufumi Kawabata
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University, 3-4-1 Kowakae, Higashiosaka 577-8502, Japan; (M.T.); (T.M.); (Y.I.); (Y.H.); (Y.A.); (S.T.); (F.S.)
- Correspondence: ; Tel.: +81-6-4307-3631
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21
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Yang H, Zeng Q, Silverman HA, Gunasekaran M, George SJ, Devarajan A, Addorisio ME, Li J, Tsaava T, Shah V, Billiar TR, Wang H, Brines M, Andersson U, Pavlov VA, Chang EH, Chavan SS, Tracey KJ. HMGB1 released from nociceptors mediates inflammation. Proc Natl Acad Sci U S A 2021; 118:e2102034118. [PMID: 34385304 PMCID: PMC8379951 DOI: 10.1073/pnas.2102034118] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Inflammation, the body's primary defensive response system to injury and infection, is triggered by molecular signatures of microbes and tissue injury. These molecules also stimulate specialized sensory neurons, termed nociceptors. Activation of nociceptors mediates inflammation through antidromic release of neuropeptides into infected or injured tissue, producing neurogenic inflammation. Because HMGB1 is an important inflammatory mediator that is synthesized by neurons, we reasoned nociceptor release of HMGB1 might be a component of the neuroinflammatory response. In support of this possibility, we show here that transgenic nociceptors expressing channelrhodopsin-2 (ChR2) directly release HMGB1 in response to light stimulation. Additionally, HMGB1 expression in neurons was silenced by crossing synapsin-Cre (Syn-Cre) mice with floxed HMGB1 mice (HMGB1f/f). When these mice undergo sciatic nerve injury to activate neurogenic inflammation, they are protected from the development of cutaneous inflammation and allodynia as compared to wild-type controls. Syn-Cre/HMGB1fl/fl mice subjected to experimental collagen antibody-induced arthritis, a disease model in which nociceptor-dependent inflammation plays a significant pathological role, are protected from the development of allodynia and joint inflammation. Thus, nociceptor HMGB1 is required to mediate pain and inflammation during sciatic nerve injury and collagen antibody-induced arthritis.
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Affiliation(s)
- Huan Yang
- Laboratory of Biomedical Sciences, Institute of Bioelectronic Medicine, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY 11030;
| | - Qiong Zeng
- Laboratory of Biomedical Sciences, Institute of Bioelectronic Medicine, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY 11030
| | - Harold A Silverman
- Laboratory of Biomedical Sciences, Institute of Bioelectronic Medicine, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY 11030
| | - Manojkumar Gunasekaran
- Laboratory of Biomedical Sciences, Institute of Bioelectronic Medicine, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY 11030
| | - Sam J George
- Laboratory of Biomedical Sciences, Institute of Bioelectronic Medicine, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY 11030
| | - Alex Devarajan
- Laboratory of Biomedical Sciences, Institute of Bioelectronic Medicine, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY 11030
| | - Meghan E Addorisio
- Laboratory of Biomedical Sciences, Institute of Bioelectronic Medicine, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY 11030
| | - Jianhua Li
- Laboratory of Biomedical Sciences, Institute of Bioelectronic Medicine, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY 11030
| | - Téa Tsaava
- Laboratory of Biomedical Sciences, Institute of Bioelectronic Medicine, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY 11030
| | - Vivek Shah
- Laboratory of Biomedical Sciences, Institute of Bioelectronic Medicine, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY 11030
| | - Timothy R Billiar
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213
| | - Haichao Wang
- Institute of Molecular Medicine, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY 11030
| | - Michael Brines
- Laboratory of Biomedical Sciences, Institute of Bioelectronic Medicine, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY 11030
| | - Ulf Andersson
- Department of Women's and Children's Health, Karolinska Institute, Karolinska University Hospital, 17176 Stockholm, Sweden
| | - Valentin A Pavlov
- Laboratory of Biomedical Sciences, Institute of Bioelectronic Medicine, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY 11030
- The Elmezzi Graduate School of Molecular Medicine, Manhasset, NY 11030
- Donald and Barbara Zucker School of Medicine at Hofstra University, Hempstead, NY 11549
| | - Eric H Chang
- Laboratory of Biomedical Sciences, Institute of Bioelectronic Medicine, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY 11030
- The Elmezzi Graduate School of Molecular Medicine, Manhasset, NY 11030
- Donald and Barbara Zucker School of Medicine at Hofstra University, Hempstead, NY 11549
| | - Sangeeta S Chavan
- Laboratory of Biomedical Sciences, Institute of Bioelectronic Medicine, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY 11030;
- The Elmezzi Graduate School of Molecular Medicine, Manhasset, NY 11030
- Donald and Barbara Zucker School of Medicine at Hofstra University, Hempstead, NY 11549
| | - Kevin J Tracey
- Laboratory of Biomedical Sciences, Institute of Bioelectronic Medicine, Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY 11030;
- The Elmezzi Graduate School of Molecular Medicine, Manhasset, NY 11030
- Donald and Barbara Zucker School of Medicine at Hofstra University, Hempstead, NY 11549
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22
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Bolay H, Karadas Ö, Oztürk B, Sonkaya R, Tasdelen B, Bulut TDS, Gülbahar Ö, Özge A, Baykan B. HMGB1, NLRP3, IL-6 and ACE2 levels are elevated in COVID-19 with headache: a window to the infection-related headache mechanism. J Headache Pain 2021; 22:94. [PMID: 34384355 PMCID: PMC8358545 DOI: 10.1186/s10194-021-01306-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 07/30/2021] [Indexed: 12/15/2022] Open
Abstract
Background and aim Pathogenesis of COVID-19 -related headache is unknown, though the induction of the trigeminal neurons through inflammation is proposed. We aimed to investigate key systemic circulating inflammatory molecules and their clinical relations in COVID-19 patients with headache. Methods This cross-sectional study enrolled 88 COVID-19 patients, hospitalized on a regular ward during the second wave of the pandemic. Clinical characteristics of COVID-19 patients were recorded, and laboratory tests were studied. Results The mean ages of 48 COVID-19 patients with headache (47.71 ± 10.8) and 40 COVID-19 patients without headache (45.70 ± 12.72) were comparable. COVID-19 patients suffered from headache had significantly higher serum levels of HMGB1, NLRP3, ACE2, and IL-6 than COVID-19 patients without headache, whereas CGRP and IL-10 levels were similar in the groups. Angiotensin II level was significantly decreased in the headache group. COVID-19 patients with headache showed an increased frequency of pulmonary involvement and increased D- dimer levels. Furthermore, COVID-19 was more frequently associated with weight loss, nausea, and diarrhea in patients with headache. Serum NLRP3 levels were correlated with headache duration and hospital stay, while headache response to paracetamol was negatively correlated with HMGB1 and positively associated with IL-10 levels. Conclusion Stronger inflammatory response is associated with headache in hospitalized COVID-19 patients with moderate disease severity. Increased levels of the circulating inflammatory and/or nociceptive molecules like HMGB1, NLRP3, and IL-6 may play a role in the potential induction of the trigeminal system and manifestation of headache secondary to SARS-CoV-2 infection.
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Affiliation(s)
- Hayrunnisa Bolay
- Department of Neurology and Algology, Neuropsychiatry Center, Neuroscience and Neurotechnology Center (NÖROM), Gazi University Hospital, Medical Faculty, Besevler, 06510, Ankara, Turkey.
| | - Ömer Karadas
- Neurology Department, University of Health Science, Gülhane School of Medicine, Ankara, Turkey
| | - Bilgin Oztürk
- Neurology Department, University of Health Science, Gülhane School of Medicine, Ankara, Turkey
| | - Riza Sonkaya
- Neurology Department, University of Health Science, Gülhane School of Medicine, Ankara, Turkey
| | - Bahar Tasdelen
- Department of Biostatistics and Medical Informatics, Mersin University, Medical Faculty, Mersin, Turkey
| | - Tuba D S Bulut
- Department of Medical Biochemistry, Gazi University, Medical Faculty, Ankara, Turkey
| | - Özlem Gülbahar
- Department of Medical Biochemistry, Gazi University, Medical Faculty, Ankara, Turkey
| | - Aynur Özge
- Department of Neurology and Algology, Mersin University, Medical Faculty, Mersin, Turkey
| | - Betül Baykan
- Istanbul Faculty of Medicine, Department of Neurology, Headache Center, Istanbul University, Istanbul, Turkey
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23
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Macrophage as a Peripheral Pain Regulator. Cells 2021; 10:cells10081881. [PMID: 34440650 PMCID: PMC8392675 DOI: 10.3390/cells10081881] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/22/2021] [Accepted: 07/22/2021] [Indexed: 12/30/2022] Open
Abstract
A neuroimmune crosstalk is involved in somatic and visceral pathological pain including inflammatory and neuropathic components. Apart from microglia essential for spinal and supraspinal pain processing, the interaction of bone marrow-derived infiltrating macrophages and/or tissue-resident macrophages with the primary afferent neurons regulates pain signals in the peripheral tissue. Recent studies have uncovered previously unknown characteristics of tissue-resident macrophages, such as their origins and association with regulation of pain signals. Peripheral nerve macrophages and intestinal resident macrophages, in addition to adult monocyte-derived infiltrating macrophages, secrete a variety of mediators, such as tumor necrosis factor-α, interleukin (IL)-1β, IL-6, high mobility group box 1 and bone morphogenic protein 2 (BMP2), that regulate the excitability of the primary afferents. Neuron-derived mediators including neuropeptides, ATP and macrophage-colony stimulating factor regulate the activity or polarization of diverse macrophages. Thus, macrophages have multitasks in homeostatic conditions and participate in somatic and visceral pathological pain by interacting with neurons.
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24
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Zhenzhen Z, Fenghao L, Meina M, Rui L, Wenbo S, Qi W. Targeting HMGB1-TLR4 signaling by miR-216a-5p elevation alleviates the inflammatory behavioral hypersensitivity. Neurosci Lett 2021; 759:136043. [PMID: 34118309 DOI: 10.1016/j.neulet.2021.136043] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/04/2021] [Accepted: 06/07/2021] [Indexed: 01/28/2023]
Abstract
Neuroinflammation induced by microglial activation has a critical role in inflammatory pain. In this study, we detected the function of miR-216a-5p in the progression of inflammatory behavioral hypersensitivity. Here, decreases of miR-216a-5p and up-regulation of high-mobility group box1 (HMGB1) were observed in complete freund's adjuvant (CFA)-induced inflammatory pain model in mice and LSP-activated BV2 microglia. HMGB1 was identified as a target of miR-216a-5p by luciferase reporter system. Ectopic expression of miR-216a-5p suppressed microglial marker IBA-1 expression and subsequent pro-inflammatory cytokine releases (IL-1β, IL-6 and TNF-α) from LPS-activated microglia. Additionally, LPS exposure enhanced the protein expression levels of HMGB1, TLR4 and p-p65 NF-kB in microglia, which were abrogated following miR-216a-5p overexpression. Intriguingly, transfection of HMGN1 cDNA into BV2 microglial cells reversed the inhibitory effects of miR-216a-5p elevation on microglial activation-triggered inflammatory response. Intrathecal delivery of LV-miR-216a-5-p ameliorated CFA-evoked mechanical and thermal hyperalgesia in mice. Concomitantly, overexpressing miR-216a-5p also restrained the inflammatory response and microglia activation in CFA-induced inflammatory mouse models, concomitant with the decreases in the expression of HMGB1, TLR4 and p-p65 NF-kB in spinal cord. Thus, these findings highlight that miR-216a-5p may alleviate inflammatory behavioral hypersensitivity by blocking microglia-mediated neuroinflammation via targeting the HMGB1-TLR4-NF-kB pathway, supporting miR-216a-5p as a potential therapeutic avenue for inflammatory pain.
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Affiliation(s)
- Zhou Zhenzhen
- Department of Anesthesiology, Cangzhou Central Hospital, Cangzhou City, Hebei Province 061001, PR China.
| | - Liu Fenghao
- Department of General Surgery, Cangzhou Central Hospital, Cangzhou City, Hebei Province 061001, PR China
| | - Ma Meina
- Department of Anesthesiology, Cangzhou Central Hospital, Cangzhou City, Hebei Province 061001, PR China
| | - Li Rui
- Department of Anesthesiology, Cangzhou Central Hospital, Cangzhou City, Hebei Province 061001, PR China
| | - Sun Wenbo
- Department of Anesthesiology, Cangzhou Central Hospital, Cangzhou City, Hebei Province 061001, PR China
| | - Wang Qi
- Department of Anesthesiology, Cangzhou Central Hospital, Cangzhou City, Hebei Province 061001, PR China
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25
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Calapai F, Mondello E, Mannucci C, Sorbara EE, Gangemi S, Quattrone D, Calapai G, Cardia L. Pain Biomarkers in Cancer: An Overview. Curr Pharm Des 2021; 27:293-304. [PMID: 33138755 DOI: 10.2174/1381612826666201102103520] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Accepted: 08/09/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Pain is a common symptom in oncologic patients and its management is generally guided with reference to pain individually perceived by patients and expressed through self-reported scales. However, the utility of these tools is limited as it strongly depends on patients' opinions. For this reason, more objective instruments are desirable. OBJECTIVE In this overview, scientific articles indicating potential markers to be used for pain management in cancer were collected and discussed. METHODS Research was performed on principal electronic scientific databases by using the words "pain", "cancer", "markers" and "biomarkers" as the main keywords, and findings describing potential biomarkers for the management of cancer pain were reported. RESULTS Studies on pain markers not specific for cancer typology (inflammatory, genetic markers predicting response to analgesic drugs, neuroimaging markers) and pain markers for specific types of cancer (bone cancer, breast cancer, lung cancer, head and neck cancer, prostate cancer, cancer in pediatrics) have been presented and commented on. CONCLUSION This overview supports the view of the involvement of inflammatory mediators in the mechanisms underlying cancer pain. Only a small amount of data from research up till today is available on markers that can help in the management of pain, except for pro-inflammatory cytokines and other inflammatory indexes such as C-reactive protein (CRP). However, biomarkers are a promising strategy useful to predict pain intensity and to objectively quantify analgesic response in guiding decisions regarding individual-tailored treatments for cancer patients.
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Affiliation(s)
- Fabrizio Calapai
- Department of Biomedical and Dental Sciences and Morphological and Functional Imaging - University of Messina, Messina, Italy
| | - Epifanio Mondello
- Anesthesia, Intensive Care and Pain Therapy, Policlinico "G. Martino" - University of Messina, Messina, Italy
| | - Carmen Mannucci
- Department of Biomedical and Dental Sciences and Morphological and Functional Imaging - University of Messina, Messina, Italy
| | - Emanuela E Sorbara
- Department of Biomedical and Dental Sciences and Morphological and Functional Imaging - University of Messina, Messina, Italy
| | - Sebastiano Gangemi
- School and Division of Allergy and Clinical Immunology, Department of Experimental Medicine, University of Messina, Messina, Italy
| | - Domenico Quattrone
- Pain Therapy Unit, Grande Ospedale Metropolitano "Bianchi-Melacrino-Morelli" - Reggio Calabria, Italy
| | - Gioacchino Calapai
- Department of Biomedical and Dental Sciences and Morphological and Functional Imaging - University of Messina, Messina, Italy
| | - Luigi Cardia
- IRCCS Centro Neurolesi Bonino- Pulejo, Messina, Italy
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26
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Perineural high-mobility group box 1 induces mechanical hypersensitivity through activation of spinal microglia: Involvement of glutamate-NMDA receptor dependent mechanism in spinal dorsal horn. Biochem Pharmacol 2021; 186:114496. [PMID: 33667472 DOI: 10.1016/j.bcp.2021.114496] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 02/24/2021] [Accepted: 02/25/2021] [Indexed: 01/15/2023]
Abstract
High mobility box 1 (HMGB1), a damage-associated molecular pattern, has crucial roles in induction of neuropathic pain. Upregulation of HMGB1 around the injured sciatic nerve contributes to mechanical hypersensitivity following partial sciatic nerve ligation (PSNL) of mice. However, central mechanisms mediating perineural HMGB1-induced nociceptive hypersensitivity, especially within the spinal dorsal horn, have not been determined. The current study shows that perineural treatment of naïve mice with recombinant HMGB1, which mimics increased HMGB1 around the injured sciatic nerve of PSNL mice, significantly induced activation of microglia, but not astrocytes, in the spinal dorsal horn. Intraperitoneal injection of minocycline, a microglial inhibitor, ameliorated perineural rHMGB1-induced mechanical hypersensitivity. In addition, blockade of spinal N-methyl-D-aspartate (NMDA) receptors significantly prevented perineural rHMGB1-induced mechanical hypersensitivity and microglial activation. In contrast, non-NMDA receptors, neurokinin 1 receptor, colony-stimulating factor 1 receptor and P2Y12 receptor were not involved in perineural rHMGB1-induced mechanical hypersensitivity. Furthermore, repeated perineural treatment with an anti-HMGB1 antibody blocked activation of spinal microglia in PSNL mice. Collectively, the current findings demonstrate that increased HMGB1 around injured sciatic nerve might induce nociceptive hypersensitivity through activation of spinal microglia. Thus, HMGB1-dependent mechanisms between the injured sciatic nerve and spinal dorsal horn could be crucial in induction of neuropathic pain.
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27
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Agalave NM, Rudjito R, Farinotti AB, Khoonsari PE, Sandor K, Nomura Y, Szabo-Pardi TA, Urbina CM, Palada V, Price TJ, Erlandsson Harris H, Burton MD, Kultima K, Svensson CI. Sex-dependent role of microglia in disulfide high mobility group box 1 protein-mediated mechanical hypersensitivity. Pain 2021; 162:446-458. [PMID: 32773600 PMCID: PMC7808363 DOI: 10.1097/j.pain.0000000000002033] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 06/20/2020] [Accepted: 07/06/2020] [Indexed: 12/14/2022]
Abstract
ABSTRACT High mobility group box 1 protein (HMGB1) is increasingly regarded as an important player in the spinal regulation of chronic pain. Although it has been reported that HMGB1 induces spinal glial activation in a Toll-like receptor (TLR)4-dependent fashion, the aspect of sexual dimorphisms has not been thoroughly addressed. Here, we examined whether the action of TLR4-activating, partially reduced disulfide HMGB1 on microglia induces nociceptive behaviors in a sex-dependent manner. We found disulfide HMGB1 to equally increase microglial Iba1 immunoreactivity in lumbar spinal dorsal horn in male and female mice, but evoke higher cytokine and chemokine expression in primary microglial culture derived from males compared to females. Interestingly, TLR4 ablation in myeloid-derived cells, which include microglia, only protected male mice from developing HMGB1-induced mechanical hypersensitivity. Spinal administration of the glial inhibitor, minocycline, with disulfide HMGB1 also prevented pain-like behavior in male mice. To further explore sex difference, we examined the global spinal protein expression using liquid chromatography-mass spectrometry and found several antinociceptive and anti-inflammatory proteins to be upregulated in only male mice subjected to minocycline. One of the proteins elevated, alpha-1-antitrypsin, partially protected males but not females from developing HMGB1-induced pain. Targeting downstream proteins of alpha-1-antitrypsin failed to produce robust sex differences in pain-like behavior, suggesting that several proteins identified by liquid chromatography-mass spectrometry are required to modulate the effects. Taken together, the current study highlights the importance of mapping sex dimorphisms in pain mechanisms and point to processes potentially involved in the spinal antinociceptive effect of microglial inhibition in male mice.
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Affiliation(s)
- Nilesh M. Agalave
- Department of Physiology and Pharmacology, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
- Department of Neuroscience, Neuroimmunology and Behavior Group, School of Behavioral and Brain Sciences, University of Texas at Dallas, Richardson, TX, United States
| | - Resti Rudjito
- Department of Physiology and Pharmacology, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Alex Bersellini Farinotti
- Department of Physiology and Pharmacology, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Payam Emami Khoonsari
- Department of Physiology and Pharmacology, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
- Department of Medical Sciences, Clinical Chemistry, Uppsala University, Uppsala, Sweden
| | - Katalin Sandor
- Department of Physiology and Pharmacology, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Yuki Nomura
- Department of Physiology and Pharmacology, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Thomas A. Szabo-Pardi
- Department of Neuroscience, Neuroimmunology and Behavior Group, School of Behavioral and Brain Sciences, University of Texas at Dallas, Richardson, TX, United States
| | - Carlos Morado Urbina
- Department of Physiology and Pharmacology, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Vinko Palada
- Department of Physiology and Pharmacology, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Theodore J. Price
- Department of Neuroscience, Pain Neurobiology Research Group, School of Behavioral and Brain Sciences, University of Texas at Dallas, Richardson, TX, United States
| | | | - Michael D. Burton
- Department of Neuroscience, Neuroimmunology and Behavior Group, School of Behavioral and Brain Sciences, University of Texas at Dallas, Richardson, TX, United States
| | - Kim Kultima
- Department of Physiology and Pharmacology, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
- Department of Medical Sciences, Clinical Chemistry, Uppsala University, Uppsala, Sweden
| | - Camilla I. Svensson
- Department of Physiology and Pharmacology, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
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28
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Molecular insights into the therapeutic promise of targeting HMGB1 in depression. Pharmacol Rep 2020; 73:31-42. [PMID: 33015736 DOI: 10.1007/s43440-020-00163-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/09/2020] [Accepted: 09/19/2020] [Indexed: 12/17/2022]
Abstract
Depression is a common psychiatric disorder, the exact pathogenesis of which is still elusive. Studies have proposed that immunity disproportion and enhancement in proinflammatory cytokines might be linked with the development of depression. HMGB1 (High-mobility group box (1) protein has obtained more interest as an essential factor in inherent immune reactions and a regulating factor in various inflammation-related diseases. HMGB1 is a ubiquitous chromatin protein and is constitutively expressed in nucleated mammalian cells. HMGB1 is released by glial cells and neurons upon inflammasome activation and act as a pro-inflammatory cytokine. HMGB1 is a late mediator of inflammation and has been indicated as a major mediator in various neuroinflammatory diseases. Microglia, which is the brain immune cell, is stimulated by HMGB1 and released inflammatory mediators and induces chronic neurodegeneration in the CNS (central nervous system). In the current review, we aimed to investigate the role of HMGB1 in the pathogenesis of depression. The studies found that HMGB1 functions as proinflammatory cytokines primarily via binding receptors like RAGE (receptor for advanced glycation end product), TLR2 and TLR4 (Toll-like receptor 2 and 4). Further, HMGB1 added to the preparing impacts of stress-pretreatment and assumed a major function in neurodegenerative conditions through moderating neuroinflammation. Studies demonstrated that neuroinflammation played a major role in the development of depression. The patients of depression generally exhibited an elevated amount of proinflammatory cytokines in the serum, microglia activation and neuronal deficit in the CNS.
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29
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Yoshizawa K, Takeuchi K, Nakamura T, Ukai S, Takahashi Y, Sato A, Takasawa R, Tanuma SI. Antinociceptive activity of the novel RAGE inhibitor, papaverine, in a mouse model of chronic inflammatory pain. Synapse 2020; 75:e22188. [PMID: 32979223 DOI: 10.1002/syn.22188] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 08/01/2020] [Accepted: 08/24/2020] [Indexed: 11/10/2022]
Abstract
Extracellular high-mobility group box 1 (HMGB1) is known to mediate the inflammatory response through pattern recognition receptors, including the receptor for advanced glycation end products (RAGE) or the toll-like receptors (TLRs). The aim of the present study was to investigate whether papaverine, a novel RAGE inhibitor, could suppress inflammatory pain in mice after several time points, which was induced by the injection of complete Freund's adjuvant (CFA). We also investigated the influence of redox modulation during a state of chronic inflammatory pain. Although papaverine did not suppress CFA-induced mechanical allodynia on Day 7, papaverine significantly suppressed CFA-induced mechanical allodynia on Days 14 and 28. In contrast, the radical scavenger N-tert-Butyl-α-phenylnitrone (PBN) suppressed mechanical allodynia in mice on Days 7 and 14, but not on Day 28. We demonstrated that the RAGE inhibitor improves mechanical allodynia in chronic inflammatory conditions. Moreover, we also found that high levels of reactive oxygen species (ROS) contributed to the early phase of CFA-induced mechanical allodynia. Precisely, lower ROS levels contributed to the inflammatory pain response via the all-thiol HMGB1/RAGE signaling pathway during the chronic state. These findings led us to propose that ROS levels modulate RAGE and/or TLR4-mediated inflammatory allodynia by regulating the concentrations of disulfide HMGB1 or all-thiol HMGB1.
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Affiliation(s)
- Kazumi Yoshizawa
- Laboratory of Pharmacology and Therapeutics, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Japan
| | - Kota Takeuchi
- Laboratory of Pharmacology and Therapeutics, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Japan
| | - Toka Nakamura
- Laboratory of Pharmacology and Therapeutics, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Japan
| | - Saki Ukai
- Laboratory of Pharmacology and Therapeutics, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Japan
| | - Yukino Takahashi
- Laboratory of Pharmacology and Therapeutics, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Japan
| | - Akira Sato
- Laboratory of Biochemistry, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Japan
| | - Ryoko Takasawa
- Laboratory of Medical Molecular Biology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Japan
| | - Sei-Ichi Tanuma
- Laboratory of Genomic Medicinal Science, Research Institute for Science and Technology, Organization for Research Advancement, Tokyo University of Science, Noda, Japan
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30
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Hu TT, Yu J, Liu K, Du Y, Qu FH, Guo F, Yu LN, Nishibori M, Chen Z, Zhang SH. A crucial role of HMGB1 in orofacial and widespread pain sensitization following partial infraorbital nerve transection. Brain Behav Immun 2020; 88:114-124. [PMID: 32389703 DOI: 10.1016/j.bbi.2020.05.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 04/24/2020] [Accepted: 05/06/2020] [Indexed: 12/11/2022] Open
Affiliation(s)
- Ting-Ting Hu
- Department of Pharmacology and Department of Anesthesiology of the Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, China; College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China; Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Jie Yu
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Keyue Liu
- Department of Pharmacology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Yu Du
- Department of Pharmacology and Department of Anesthesiology of the Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Feng-Hui Qu
- Department of Pharmacology and Department of Anesthesiology of the Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Fang Guo
- Department of Pharmacology and Department of Anesthesiology of the Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Li-Na Yu
- Department of Pharmacology and Department of Anesthesiology of the Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Masahiro Nishibori
- Department of Pharmacology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Zhong Chen
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China; Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China.
| | - Shi-Hong Zhang
- Department of Pharmacology and Department of Anesthesiology of the Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, China.
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Campos ACP, Antunes GF, Matsumoto M, Pagano RL, Martinez RCR. Neuroinflammation, Pain and Depression: An Overview of the Main Findings. Front Psychol 2020; 11:1825. [PMID: 32849076 PMCID: PMC7412934 DOI: 10.3389/fpsyg.2020.01825] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 07/02/2020] [Indexed: 12/23/2022] Open
Abstract
Chronic pain is a serious public health problem with a strong affective-motivational component that makes it difficult to treat. Most patients with chronic pain suffer from severe depression; hence, both conditions coexist and exacerbate one another. Brain inflammatory mediators are critical for maintaining depression-pain syndrome and could be substrates for it. The goal of our paper was to review clinical and preclinical findings to identify the neuroinflammatory profile associated with the cooccurrence of pain and depression. In addition, we aimed to explore the regulatory effect of neuronal reorganization on the inflammatory response in pain and depression. We conducted a quantitative review supplemented by manual screening. Our results revealed inflammatory signatures in different preclinical models and clinical articles regarding depression-pain syndrome. We also identified that improvements in depressive symptoms and amelioration of pain can be modulated through direct targeting of inflammatory mediators, such as cytokines and molecular inhibitors of the inflammatory cascade. Additionally, therapeutic targets that improve and regulate the synaptic environment and its neurotransmitters may act as anti-inflammatory compounds, reducing local damage-associated molecular patterns and inhibiting the activation of immune and glial cells. Taken together, our data will help to better elucidate the neuroinflammatory profile in pain and depression and may help to identify pharmacological targets for effective management of depression-pain syndrome.
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Affiliation(s)
| | | | - Marcio Matsumoto
- Anesthesiology Medical Center, Hospital Sirio-Libanes, São Paulo, Brazil
| | | | - Raquel Chacon Ruiz Martinez
- Division of Neuroscience, Hospital Sirio-Libanes, São Paulo, Brazil.,LIM 23, Institute of Psychiatry, University of São Paulo School of Medicine, São Paulo, Brazil
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Cystitis-Related Bladder Pain Involves ATP-Dependent HMGB1 Release from Macrophages and Its Downstream H 2S/Ca v3.2 Signaling in Mice. Cells 2020; 9:cells9081748. [PMID: 32707767 PMCID: PMC7463894 DOI: 10.3390/cells9081748] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 07/19/2020] [Indexed: 12/12/2022] Open
Abstract
Cystitis-related bladder pain involves RAGE activation by HMGB1, and increased Cav3.2 T-type Ca2+ channel activity by H2S, generated by upregulated cystathionine-γ-lyase (CSE) in mice treated with cyclophosphamide (CPA). We, thus, investigated possible crosstalk between the HMGB1/RAGE and CSE/H2S/Cav3.2 pathways in the bladder pain development. Bladder pain (nociceptive behavior/referred hyperalgesia) and immuno-reactive CSE expression in the bladder were determined in CPA-treated female mice. Cell signaling was analyzed in urothelial T24 and macrophage-like RAW264.7 cells. The CPA-induced bladder pain was abolished by pharmacological inhibition of T-type Ca2+ channels or CSE, and genetic deletion of Cav3.2. The CPA-induced CSE upregulation, as well as bladder pain was prevented by HMGB1 inactivation, inhibition of HMGB1 release from macrophages, antagonists of RAGE or P2X4/P2X7 receptors, and N-acetylcysteine, an antioxidant. Acrolein, a metabolite of CPA, triggered ATP release from T24 cells. Adenosine triphosphate (ATP) stimulated cell migration via P2X7/P2X4, and caused HMGB1 release via P2X7 in RAW264.7 cells, which was dependent on p38MAPK/NF-κB signaling and reactive oxygen species (ROS) accumulation. Together, our data suggest that CPA, once metabolized to acrolein, causes urothelial ATP-mediated, redox-dependent HMGB1 release from macrophages, which in turn causes RAGE-mediated CSE upregulation and subsequent H2S-targeted Cav3.2-dependent nociceptor excitation, resulting in bladder pain.
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Amruta N, Rahman AA, Pinteaux E, Bix G. Neuroinflammation and fibrosis in stroke: The good, the bad and the ugly. J Neuroimmunol 2020; 346:577318. [PMID: 32682140 PMCID: PMC7794086 DOI: 10.1016/j.jneuroim.2020.577318] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 07/01/2020] [Accepted: 07/03/2020] [Indexed: 02/08/2023]
Abstract
Stroke is the leading cause of death and the main cause of disability in surviving patients. The detrimental interaction between immune cells, glial cells, and matrix components in stroke pathology results in persistent inflammation that progresses to fibrosis. A substantial effort is being directed toward understanding the exact neuroinflammatory events that take place as a result of stroke. The initiation of a potent cytokine response, along with immune cell activation and infiltration in the ischemic core, has massive acute deleterious effects, generally exacerbated by comorbid inflammatory conditions. There is secondary neuroinflammation that promotes further injury, resulting in cell death, but conversely plays a beneficial role, by promoting recovery. This highlights the need for a better understanding of the neuroinflammatory and fibrotic processes, as well as the need to identify new mechanisms and potential modulators. In this review, we summarize several aspects of stroke-induced inflammation, fibrosis, and include a discussion of cytokine inhibitors/inducers, immune cells, and fibro-inflammation signaling inhibitors in order to identify new pharmacological means of intervention.
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Affiliation(s)
- Narayanappa Amruta
- Department of Neurosurgery, Clinical Neuroscience Research Center, Tulane University School of Medicine, New Orleans, LA 70112, USA.
| | - Abir A Rahman
- Department of Neurosurgery, Clinical Neuroscience Research Center, Tulane University School of Medicine, New Orleans, LA 70112, USA.
| | - Emmanuel Pinteaux
- Faculty of Biology, Medicine and Health, A.V. Hill Building, University of Manchester, Oxford Road, Manchester, M13 9PT, United Kingdom.
| | - Gregory Bix
- Department of Neurosurgery, Clinical Neuroscience Research Center, Tulane University School of Medicine, New Orleans, LA 70112, USA; Faculty of Biology, Medicine and Health, A.V. Hill Building, University of Manchester, Oxford Road, Manchester, M13 9PT, United Kingdom; Tulane Brain Institute, Tulane University, New Orleans, LA 70118, USA.
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Tsujita R, Tsubota M, Sekiguchi F, Kawabata A. Role of high-mobility group box 1 and its modulation by thrombomodulin/thrombin axis in neuropathic and inflammatory pain. Br J Pharmacol 2020; 178:798-812. [PMID: 32374414 DOI: 10.1111/bph.15091] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 04/16/2020] [Accepted: 04/17/2020] [Indexed: 12/15/2022] Open
Abstract
High-mobility group box 1 (HMGB1), a nuclear protein, once released to the extracellular space, facilitates pain signals as well as inflammation. Intraplantar or intraspinal application of HMGB1 elicits hyperalgesia/allodynia in rodents by activating the advanced glycosylation end-product specific receptor (receptor for advanced glycation end-products; RAGE) or Toll-like receptor 4 (TLR4). Endogenous HMGB1 derived from neurons, perineuronal cells or immune cells accumulating in the dorsal root ganglion or sensory nerves participates in somatic and visceral pain consisting of neuropathic and/or inflammatory components. Endothelial thrombomodulin (TM) and recombinant human soluble TM, TMα, markedly increase thrombin-dependent degradation of HMGB1, and systemic administration of TMα prevents and reverses various HMGB1-dependent pathological pain. Low MW compounds that directly inactivate HMGB1 or antagonize HMGB1-targeted receptors would be useful to reduce various forms of intractable pain. Thus, HMGB1 and its receptors are considered to serve as promising targets in developing novel agents to prevent or treat pathological pain. LINKED ARTICLES: This article is part of a themed issue on Neurochemistry in Japan. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v178.4/issuetoc.
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Affiliation(s)
- Ryuichi Tsujita
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University (formally known as Kinki University), Higashiosaka, Japan.,Project Management Department, Asahi Kasei Pharma Corporation, Tokyo, Japan
| | - Maho Tsubota
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University (formally known as Kinki University), Higashiosaka, Japan
| | - Fumiko Sekiguchi
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University (formally known as Kinki University), Higashiosaka, Japan
| | - Atsufumi Kawabata
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University (formally known as Kinki University), Higashiosaka, Japan
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Yang Y, Yang L, Jiang S, Yang T, Lan J, Lei Y, Tan H, Pan K. HMGB1 mediates lipopolysaccharide-induced inflammation via interacting with GPX4 in colon cancer cells. Cancer Cell Int 2020; 20:205. [PMID: 32514250 PMCID: PMC7260829 DOI: 10.1186/s12935-020-01289-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 05/22/2020] [Indexed: 12/29/2022] Open
Abstract
Background Inflammation is one of a main reason for colon cancer progression and poor prognosis. The high-mobility group box-1 (HMGB1) and glutathione peroxidase 4 (GPX4) are responsible for inflammation, but the relationship between HMGB1 and GPX4 remains unknown about inflammation in colon cancer. Methods RT-qPCR was carried out to investigate the expression of IL1β, IL6 and TNFα in colon cancer cells stimulated with LPS or siHMGB1. To observe the relationship between HMGB1, GPX4 and inflammation or ROS, Western blot assays were adopted. Pull-down, CoIP and immunohistochemistry assays were performed to further investigate the molecular mechanisms of HMGB1 and GPX4 in colon cancer. Results We report that HMGB1 mediates lipopolysaccharide (LPS)-induced inflammation in colon cancer cells. Mechanistically, acetylated HMGB1 interacts with GPX4, negatively regulating GPX4 activity. Furthermore, by utilizing siHMGB1 and its inhibitor, our discoveries demonstrate that HMGB1 knockdown can inhibit inflammation and reactive oxygen species (ROS) accumulation via NF-kB. Conclusion Collectively, our findings first demonstrate that acetylated HMGB1 can interact with GPX4, leading to inflammation, and providing therapeutic strategies targeting HMGB1 and GPX4 for colon cancer.
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Affiliation(s)
- Yuhan Yang
- School of Bioscience and Technology, Chengdu Medical College, Chengdu, 610500 Sichuan People's Republic of China
| | - Ling Yang
- School of Basic Medical Sciences, Chengdu Medical College, Chengdu, People's Republic of China
| | - Sheng Jiang
- Ministry of science and technology, Second Affiliated Hospital of Chengdu Medical College (China National Nuclear Corporation 416 Hospital), Chengdu, People's Republic of China
| | - Ting Yang
- Department of pathology, Yiyang Central Hospital, Yiyang, 413000 Hunan People's Republic of China
| | - Jingbin Lan
- School of Bioscience and Technology, Chengdu Medical College, Chengdu, 610500 Sichuan People's Republic of China
| | - Yun Lei
- School of Basic Medical Sciences, Chengdu Medical College, Chengdu, People's Republic of China
| | - Hao Tan
- School of Bioscience and Technology, Chengdu Medical College, Chengdu, 610500 Sichuan People's Republic of China
| | - Kejian Pan
- School of Bioscience and Technology, Chengdu Medical College, Chengdu, 610500 Sichuan People's Republic of China
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Aulin C, Lassacher T, Palmblad K, Erlandsson Harris H. Early stage blockade of the alarmin HMGB1 reduces cartilage destruction in experimental OA. Osteoarthritis Cartilage 2020; 28:698-707. [PMID: 31982563 DOI: 10.1016/j.joca.2020.01.003] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Revised: 12/31/2019] [Accepted: 01/05/2020] [Indexed: 02/02/2023]
Abstract
OBJECTIVE The alarmin HMGB1 is an endogenous molecule that is released into the extracellular space upon trauma or cell activation. Extracellular HMGB1 initiates innate immune responses and besides mediating inflammation, has osteoclast-activating features and mediates pain, all important features in OA. The aim of this study was to examine the involvement of HMGB1 in experimental OA and to explore the effect of local anti-HMGB1-therapy on disease progression. METHOD OA was induced in mice by surgical destabilization of knee joints and HMGB1 expression and localization was assessed by immunohistochemistry. For therapy evaluation, HMGB1-neutralizing antibodies were injected intraarticularly, alone or encapsulated in an injectable hyaluronan-based delivery vehicle. Human primary chondrocytes were stimulated with rHMGB1 and analyzed by qPCR and cytometric bead-array. RESULTS HMGB1 immunostaining of mouse OA joints demonstrated intra- and pericellular expression in chondrocytes, overlapping with proteoglycan depleted areas. Intra-articular injection of anti-HMGB1 antibodies had cartilage-protective effects, comparable to treatment with a TNF inhibitor. Direct and vehicle-based delivery had similar ameliorating effects and the effect of a single, early injection could not be enhanced by repeated injections. In vitro stimulation of chondrocytes with rHMGB1 affected chondrocyte function by inducing protein expression of IL6 and IL8 and downregulating mRNA of COL2A1. CONCLUSIONS Our results suggest that the alarmin HMGB1 might be a new target for OA therapy development as we could observe an aberrant HMGB1 expression in mouse OA joints, stimulation of chondrocytes with rHMGB1 induced cytokine production and decreased matrix production and finally that HMGB1 blockade suppressed disease progression.
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Affiliation(s)
- C Aulin
- Center for Molecular Medicine, Department of Medicine Solna, Karolinska Institutet, And Division of Rheumatology, Karolinska University Hospital, SE-171 76, Stockholm, Sweden.
| | - T Lassacher
- Center for Molecular Medicine, Department of Medicine Solna, Karolinska Institutet, And Division of Rheumatology, Karolinska University Hospital, SE-171 76, Stockholm, Sweden.
| | - K Palmblad
- Department of Women and Child Health, Karolinska Institutet, Unit of Pediatric Rheumatology, Karolinska University Hospital, SE-171 76, Stockholm, Sweden.
| | - H Erlandsson Harris
- Center for Molecular Medicine, Department of Medicine Solna, Karolinska Institutet, And Division of Rheumatology, Karolinska University Hospital, SE-171 76, Stockholm, Sweden.
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Hisaoka-Nakashima K, Azuma H, Ishikawa F, Nakamura Y, Wang D, Liu K, Wake H, Nishibori M, Nakata Y, Morioka N. Corticosterone Induces HMGB1 Release in Primary Cultured Rat Cortical Astrocytes: Involvement of Pannexin-1 and P2X7 Receptor-Dependent Mechanisms. Cells 2020; 9:cells9051068. [PMID: 32344830 PMCID: PMC7290518 DOI: 10.3390/cells9051068] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 04/17/2020] [Accepted: 04/22/2020] [Indexed: 02/06/2023] Open
Abstract
A major risk factor for major depressive disorder (MDD) is stress. Stress leads to the release of high-mobility group box-1 (HMGB1), which in turn leads to neuroinflammation, a potential pathophysiological basis of MDD. The mechanism underlying stress-induced HMGB1 release is not known, but stress-associated glucocorticoids could be involved. To test this, rat primary cultured cortical astrocytes, the most abundant cell type in the central nervous system (CNS), were treated with corticosterone and HMGB1 release was assessed by Western blotting and ELISA. Significant HMGB1 was released with treatment with either corticosterone or dexamethasone, a synthetic glucocorticoid. HMGB1 translocated from the nucleus to the cytoplasm following corticosterone treatment. HMGB1 release was significantly attenuated with glucocorticoid receptor blocking. In addition, inhibition of pannexin-1, and P2X7 receptors led to a significant decrease in corticosterone-induced HMGB1 release. Taken together, corticosterone stimulates astrocytic glucocorticoid receptors and triggers cytoplasmic translocation and extracellular release of nuclear HMGB1 through a mechanism involving pannexin-1 and P2X7 receptors. Thus, under conditions of stress, glucocorticoids induce astrocytic HMGB1 release, leading to a neuroinflammatory state that could mediate neurological disorders such as MDD.
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Affiliation(s)
- Kazue Hisaoka-Nakashima
- Department of Pharmacology, Graduate School of Biomedical & Health Sciences, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima 734-8553, Japan; (K.H.-N.); (H.A.); (F.I.); (Y.N.); (Y.N.)
| | - Honami Azuma
- Department of Pharmacology, Graduate School of Biomedical & Health Sciences, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima 734-8553, Japan; (K.H.-N.); (H.A.); (F.I.); (Y.N.); (Y.N.)
| | - Fumina Ishikawa
- Department of Pharmacology, Graduate School of Biomedical & Health Sciences, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima 734-8553, Japan; (K.H.-N.); (H.A.); (F.I.); (Y.N.); (Y.N.)
| | - Yoki Nakamura
- Department of Pharmacology, Graduate School of Biomedical & Health Sciences, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima 734-8553, Japan; (K.H.-N.); (H.A.); (F.I.); (Y.N.); (Y.N.)
| | - Dengli Wang
- Department of Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Shikata, Okayama 700-8558, Japan; (D.W.); (K.L.); (H.W.); (M.N.)
| | - Keyue Liu
- Department of Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Shikata, Okayama 700-8558, Japan; (D.W.); (K.L.); (H.W.); (M.N.)
| | - Hidenori Wake
- Department of Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Shikata, Okayama 700-8558, Japan; (D.W.); (K.L.); (H.W.); (M.N.)
| | - Masahiro Nishibori
- Department of Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Shikata, Okayama 700-8558, Japan; (D.W.); (K.L.); (H.W.); (M.N.)
| | - Yoshihiro Nakata
- Department of Pharmacology, Graduate School of Biomedical & Health Sciences, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima 734-8553, Japan; (K.H.-N.); (H.A.); (F.I.); (Y.N.); (Y.N.)
| | - Norimitsu Morioka
- Department of Pharmacology, Graduate School of Biomedical & Health Sciences, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima 734-8553, Japan; (K.H.-N.); (H.A.); (F.I.); (Y.N.); (Y.N.)
- Correspondence: ; Tel.: +81-082-257-5310
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Lidocaine Alleviates Neuropathic Pain and Neuroinflammation by Inhibiting HMGB1 Expression to Mediate MIP-1α/CCR1 Pathway. J Neuroimmune Pharmacol 2020; 16:318-333. [DOI: 10.1007/s11481-020-09913-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 03/09/2020] [Indexed: 02/07/2023]
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Qian J, Zhu Y, Bai L, Gao Y, Jiang M, Xing F, Zhang J, Zhao W, Gu H, Mi Y, Tao YX, Xu JT. Chronic morphine-mediated upregulation of high mobility group box 1 in the spinal cord contributes to analgesic tolerance and hyperalgesia in rats. Neurotherapeutics 2020; 17:722-742. [PMID: 31879851 PMCID: PMC7283437 DOI: 10.1007/s13311-019-00800-w] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Analgesic tolerance and hyperalgesia hinder the long-term utility of opioids. We examined whether spinal high mobility group box 1 (HMGB1) is involved in morphine tolerance and its underlying mechanisms by using a model of repeated intrathecal (i.t.) injections of morphine. The results showed that chronic i.t. morphine exposure led to increased expression of HMGB1, Toll-like receptor 4 (TLR4), and receptor for advanced glycation end products (RAGE) and their mRNAs in the dorsal horn. Morphine challenge also promoted HMGB1 expression and release in cultured spinal neurons, but these effects were inhibited by TAK-242, naloxone (antagonists of TLR4), and TLR4 siRNA. Intrathecal coadministration of morphine with TAK-242 or PDTC (inhibitor of NF-κB activation) also reduced HMGB1 expression in the spinal cord. Repeated i.t. coinjections of morphine with glycyrrhizin (GL, an HMGB1 inhibitor) or HMGB1 siRNA prevented reduction of the maximal possible analgesic effect (MPAE) of morphine and alleviated morphine withdrawal-induced hyperalgesia. The established morphine tolerance and hyperalgesia were partially reversed when i.t. injections of GL or HMGB1 antibody started at day 7 of morphine injection. Repeated i.t. injections of morphine with HMGB1 siRNA inhibited the activation of NF-κB, but not that of JNK and p38. A single i.t. injection of HMGB1 in naïve rats caused pain-related hypersensitivity and reduction in MPAE. Moreover, phosphorylated NF-κB p65, TNF-α, and IL-1β levels in the dorsal horn were upregulated following this treatment, but this upregulation was prevented by coinjection with TAK-242. Together, these results suggest that morphine-mediated upregulation of spinal HMGB1 contributes to analgesic tolerance and hyperalgesia via activation of TLR4/NF-κB signaling, and the HMGB1 inhibitor might be a promising adjuvant to morphine in the treatment of intractable pain in the clinic.
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Affiliation(s)
- Junliang Qian
- Department of Physiology and Neurobiology, Zhengzhou University School of Basic Medical Sciences, 100 Science Avenue, Zhengzhou, 450001, China
| | - Yanan Zhu
- Department of Physiology and Neurobiology, Zhengzhou University School of Basic Medical Sciences, 100 Science Avenue, Zhengzhou, 450001, China
| | - Liying Bai
- Department of Anesthesiology, The First Affiliated Hospital, Zhengzhou University, 40 Daxue Road, Zhengzhou, 450052, China
| | - Yan Gao
- Department of Physiology and Neurobiology, Zhengzhou University School of Basic Medical Sciences, 100 Science Avenue, Zhengzhou, 450001, China
- Neuroscience Research Institute, Zhengzhou University Academy of Medical Sciences, 100 Science Avenue, Zhengzhou, 450001, China
| | - Mingjun Jiang
- Department of Physiology and Neurobiology, Zhengzhou University School of Basic Medical Sciences, 100 Science Avenue, Zhengzhou, 450001, China
| | - Fei Xing
- Department of Anesthesiology, The First Affiliated Hospital, Zhengzhou University, 40 Daxue Road, Zhengzhou, 450052, China
| | - Jian Zhang
- Department of Physiology and Neurobiology, Zhengzhou University School of Basic Medical Sciences, 100 Science Avenue, Zhengzhou, 450001, China
| | - Wenchao Zhao
- Department of Physiology and Neurobiology, Zhengzhou University School of Basic Medical Sciences, 100 Science Avenue, Zhengzhou, 450001, China
| | - Hanwen Gu
- Department of Anesthesiology, The First Affiliated Hospital, Zhengzhou University, 40 Daxue Road, Zhengzhou, 450052, China
| | - Yang Mi
- Department of Physiology and Neurobiology, Zhengzhou University School of Basic Medical Sciences, 100 Science Avenue, Zhengzhou, 450001, China
| | - Yuan-Xiang Tao
- Department of Anesthesiology, New Jersey Medical School, Rutgers, The State University of New Jersey, 185 S. Orange Ave., MSB, E-661, Newark, NJ, 07103, USA
| | - Ji-Tian Xu
- Department of Physiology and Neurobiology, Zhengzhou University School of Basic Medical Sciences, 100 Science Avenue, Zhengzhou, 450001, China.
- Neuroscience Research Institute, Zhengzhou University Academy of Medical Sciences, 100 Science Avenue, Zhengzhou, 450001, China.
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40
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Irie Y, Tsubota M, Maeda M, Hiramoto S, Sekiguchi F, Ishikura H, Wake H, Nishibori M, Kawabata A. HMGB1 and its membrane receptors as therapeutic targets in an intravesical substance P-induced bladder pain syndrome mouse model. J Pharmacol Sci 2020; 143:112-116. [PMID: 32222337 DOI: 10.1016/j.jphs.2020.03.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 03/04/2020] [Accepted: 03/06/2020] [Indexed: 12/11/2022] Open
Abstract
HMGB1, a nuclear protein, once released to the extracellular space, promotes somatic and visceral pain signals. We thus analyzed the role of HMGB1 in an intravesical substance P-induced bladder pain syndrome (BPS) mouse model. Intravesical administration of substance P caused referred hyperalgesia/allodynia in the lower abdomen and hindpaw without producing severe urothelial damage, which was prevented by an anti-HMGB1-neutralizing antibody, thrombomodulin α capable of inactivating HMGB1 and antagonists of RAGE or CXCR4. The HMGB1 inactivation or RAGE blockade also reversed the established bladder pain symptoms. HMGB1 and RAGE are thus considered to serve as therapeutic targets for BPS.
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Affiliation(s)
- Yuhei Irie
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University, Higashi-Osaka, 577-8502, Japan; Division of Emergency and Critical Care Medicine, Fukuoka University, Hospital, Fukuoka, 814-0180, Japan
| | - Maho Tsubota
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University, Higashi-Osaka, 577-8502, Japan
| | - Mariko Maeda
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University, Higashi-Osaka, 577-8502, Japan
| | - Shiori Hiramoto
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University, Higashi-Osaka, 577-8502, Japan
| | - Fumiko Sekiguchi
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University, Higashi-Osaka, 577-8502, Japan
| | - Hiroyasu Ishikura
- Division of Emergency and Critical Care Medicine, Fukuoka University, Hospital, Fukuoka, 814-0180, Japan
| | - Hidenori Wake
- Department of Pharmacology, Okayama University Graduate School of Medicine, Okayama, 700-8558, Japan
| | - Masahiro Nishibori
- Department of Pharmacology, Okayama University Graduate School of Medicine, Okayama, 700-8558, Japan
| | - Atsufumi Kawabata
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University, Higashi-Osaka, 577-8502, Japan.
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Kawabata A, Tsubota M, Sekiguchi F, Tsujita R. [HMGB1 as a target for prevention of chemotherapy-induced peripheral neuropathy]. Nihon Yakurigaku Zasshi 2019; 154:236-240. [PMID: 31735750 DOI: 10.1254/fpj.154.236] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Chemotherapy-induced peripheral neuropathy (CIPN) considerably impairs cancer patients' QOL, and may lead to discontinuation of drug treatment of cancer. Currently, there is no effective strategy against CIPN. Therefore, it is an urgent issue to develop clinically available drugs that prevent or treat CIPN. We have shown that high mobility group box 1 (HMGB1), a damage-associated molecular pattern (DAMP) molecule, plays an essential role in the development of CIPN. Most interestingly, thrombomodulin α, approved as a medicine for treatment of disseminated intravascular coagulation (DIC) in Japan, causes thrombin-dependent degradation of extracellular HMGB1 that is released in response to chemotherapeutics, and prevents CIPN. Thus, we expect that targeting HMGB1 or its receptors would lead to prevention of CIPN in cancer patients in near future.
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Affiliation(s)
- Atsufumi Kawabata
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University
| | - Maho Tsubota
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University
| | - Fumiko Sekiguchi
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University
| | - Ryuichi Tsujita
- Laboratory of Pharmacology and Pathophysiology, Faculty of Pharmacy, Kindai University.,Asahi Kasei Pharma Corporation
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miR-129-5p Alleviates Neuropathic Pain Through Regulating HMGB1 Expression in CCI Rat Models. J Mol Neurosci 2019; 70:84-93. [PMID: 31489582 DOI: 10.1007/s12031-019-01403-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 08/27/2019] [Indexed: 12/16/2022]
Abstract
Recently, microRNAs are reported to be participated in the development of pain and persistence of neuropathic and inflammatory pain in animal models. Here, we characterized the functional role of miR-129-5p in pain processing in chronic constriction injury (CCI) rat models. Bilateral CCI operation was used to generate neuropathic pain rat model. Paw withdrawal threshold (PWT) and paw withdrawal latency (PWL) were used to assess pain-related behaviors. Gene expression was evaluated using qRT-PCR, luciferase assay, western blotting, and enzyme-linked immunosorbent assay. Compared with the control rats, expression level of miR-129-5p was downregulated significantly over time in CCI rats post operation. Interestingly, downregulation of miR-129-5p in CCI rats was correlated with increased proinflammatory cytokine expression and pain-related behaviors. Furthermore, we found that miR-129-5p alleviated neuropathic pain through downregulating high mobility group protein B1 (HMGB1) expression in CCI rats as overexpression of miR-129-5p suppressed expression of both HMGB1 and proinflammatory cytokine and alleviated pain sensation in CCI rats. In summary, our results show that alteration in miR-129-5p expression contributes to pain processing in our CCI pain rat model, suggesting miR-129-5p could be a causal factor in neuropathic pain and serve as a promising potential biomarker and therapeutic target for neuropathic pain.
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Morioka N, Miyauchi K, Miyashita K, Kochi T, Zhang FF, Nakamura Y, Liu K, Wake H, Hisaoka‐Nakashima K, Nishibori M, Nakata Y. Spinal high‐mobility group box‐1 induces long‐lasting mechanical hypersensitivity through the toll‐like receptor 4 and upregulation of interleukin‐1β in activated astrocytes. J Neurochem 2019; 150:738-758. [DOI: 10.1111/jnc.14812] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 06/19/2019] [Accepted: 06/26/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Norimitsu Morioka
- Department of Pharmacology Hiroshima University Graduate School of Biomedical & Health Sciences Minami‐ku Hiroshima Japan
| | - Kazuki Miyauchi
- Department of Pharmacology Hiroshima University Graduate School of Biomedical & Health Sciences Minami‐ku Hiroshima Japan
| | - Keita Miyashita
- Department of Pharmacology Hiroshima University Graduate School of Biomedical & Health Sciences Minami‐ku Hiroshima Japan
| | - Takahiro Kochi
- Department of Pharmacology Hiroshima University Graduate School of Biomedical & Health Sciences Minami‐ku Hiroshima Japan
| | - Fang Fang Zhang
- Department of Pharmacology Hiroshima University Graduate School of Biomedical & Health Sciences Minami‐ku Hiroshima Japan
- Institute of Pharmacology Taishan Medical University Taian Shandong China
| | - Yoki Nakamura
- Department of Pharmacology Hiroshima University Graduate School of Biomedical & Health Sciences Minami‐ku Hiroshima Japan
- Cellular Pathobiology Section, Integrative Neuroscience Research Branch National Institute on Drug Abuse IRP Baltimore Maryland USA
| | - Keyue Liu
- Department of Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama University Okayama Japan
| | - Hidenori Wake
- Department of Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama University Okayama Japan
| | - Kazue Hisaoka‐Nakashima
- Department of Pharmacology Hiroshima University Graduate School of Biomedical & Health Sciences Minami‐ku Hiroshima Japan
| | - Masahiro Nishibori
- Department of Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama University Okayama Japan
| | - Yoshihiro Nakata
- Department of Pharmacology Hiroshima University Graduate School of Biomedical & Health Sciences Minami‐ku Hiroshima Japan
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Hisaoka-Nakashima K, Tomimura Y, Yoshii T, Ohata K, Takada N, Zhang FF, Nakamura Y, Liu K, Wake H, Nishibori M, Nakata Y, Morioka N. High-mobility group box 1-mediated microglial activation induces anxiodepressive-like behaviors in mice with neuropathic pain. Prog Neuropsychopharmacol Biol Psychiatry 2019; 92:347-362. [PMID: 30763674 DOI: 10.1016/j.pnpbp.2019.02.005] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 01/22/2019] [Accepted: 02/07/2019] [Indexed: 12/13/2022]
Abstract
Clinical evidence indicates that major depression is a common comorbidity of chronic pain, including neuropathic pain. However, the cellular basis for chronic pain-mediated major depression remains unclear. High-mobility group box 1 protein (HMGB1) has a key role in innate immune responses and appears to be have a role in mediating diverse disorders, including neuropathic pain and depression. The current study aimed to characterize neuropathic pain-induced changes in affect over time and to determine whether HMGB1 has a role in neuropathic pain-induced changes in affect. Neuropathic pain was induced by partial sciatic nerve ligation (PSNL) in mice. Anxiodepressive-like behaviors in mice were evaluated over 10 weeks, in the social interaction, forced swim, and novelty suppressed feeding tests. Mice developed anxiodepressive-like behavior 6 to 8 weeks after induction of neuropathy. Accompanying anxiodepressive-like behavior, increased HMGB1 protein and microglia activation were observed in frontal cortex at 8 weeks after PSNL. Intracerebroventricular administration of rHMGB1 in naïve mice induced anxiodepressive-like behavior and microglia activation. Blockage of HMGB1 in PSNL mice with glycyrrhizic acid (GZA) or anti-HMGB1 antibody reduced microglia activation and anxiodepressive-like behavior. These results indicate that PSNL-induced anxiodepressive-like behavior is likely mediated by HMGB1. Furthermore, the data indicate that inhibition of HMGB1-dependent microglia activation could be a strategy for the treatment of depression associated with neuropathic pain.
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Affiliation(s)
- Kazue Hisaoka-Nakashima
- Department of Pharmacology, Graduate School of Biomedical & Health Sciences, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima, Japan
| | - Yoshiaki Tomimura
- Department of Pharmacology, Graduate School of Biomedical & Health Sciences, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima, Japan
| | - Toshiki Yoshii
- Department of Pharmacology, Graduate School of Biomedical & Health Sciences, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima, Japan
| | - Kazuto Ohata
- Department of Pharmacology, Graduate School of Biomedical & Health Sciences, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima, Japan
| | - Naoki Takada
- Department of Pharmacology, Graduate School of Biomedical & Health Sciences, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima, Japan
| | - Fang Fang Zhang
- Department of Pharmacology, Graduate School of Biomedical & Health Sciences, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima, Japan; Institute of Pharmacology, Tawishan Medical University, 619 Changcheng Road, Taian, Shandong 271016, China
| | - Yoki Nakamura
- Department of Pharmacology, Graduate School of Biomedical & Health Sciences, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima, Japan
| | - Keyue Liu
- Department of Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Shikata, Okayama, Japan
| | - Hidenori Wake
- Department of Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Shikata, Okayama, Japan
| | - Masahiro Nishibori
- Department of Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Shikata, Okayama, Japan
| | - Yoshihiro Nakata
- Department of Pharmacology, Graduate School of Biomedical & Health Sciences, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima, Japan
| | - Norimitsu Morioka
- Department of Pharmacology, Graduate School of Biomedical & Health Sciences, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima, Japan.
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Cui X, Jing X, Lutgendorf SK, Bradley CS, Schrepf A, Erickson BA, Magnotta VA, Ness TJ, Kreder KJ, O'Donnell MA, Luo Y. Cystitis-induced bladder pain is Toll-like receptor 4 dependent in a transgenic autoimmune cystitis murine model: a MAPP Research Network animal study. Am J Physiol Renal Physiol 2019; 317:F90-F98. [PMID: 31091120 DOI: 10.1152/ajprenal.00017.2019] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Altered Toll-like receptor (TLR)4 activation has been identified in several chronic pain conditions but has not been well studied in interstitial cystitis/bladder pain syndrome (IC/BPS). Our previously published human studies indicated that patients with IC/BPS present altered systemic TLR4-mediated inflammatory responses, which were significantly correlated with reported pain severity. In the present study, we sought to determine whether altered TLR4 activation plays a role in pelvic/bladder pain seen in patients with IC/BPS using our validated IC/BPS-like transgenic autoimmune cystitis model (URO-OVA). URO-OVA mice developed responses consistent with pelvic and bladder pain after cystitis induction, which was associated with increased splenocyte production of TLR4-mediated proinflammatory cytokines IL-1β, IL-6, and TNF-α. Increased spinal expression of mRNAs for proinflammatory cytokines IL-6 and TNF-α, glial activation markers CD11b and glial fibrillary acidic protein, and endogenous TLR4 ligand high mobility group box 1 was also observed after cystitis induction. Compared with URO-OVA mice, TLR4-deficient URO-OVA mice developed significantly reduced nociceptive responses, although similar bladder inflammation and voiding dysfunction, after cystitis induction. Intravenous administration of TAK-242 (a TLR4-selective antagonist) significantly attenuated nociceptive responses in cystitis-induced URO-OVA mice, which was associated with reduced splenocyte production of TLR4-mediated IL-1β, IL-6, and TNF-α as well as reduced spinal expression of mRNAs for IL-6, TNF-α, CD11b, glial fibrillary acidic protein, and high mobility group box 1. Our results indicate that altered TLR4 activation plays a critical role in bladder nociception independent of inflammation and voiding dysfunction in the URO-OVA model, providing a potential mechanistic insight and therapeutic target for IC/BPS pain.
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Affiliation(s)
- Xiangrong Cui
- Department of Urology, University of Iowa , Iowa City, Iowa
| | - Xuan Jing
- Department of Urology, University of Iowa , Iowa City, Iowa
| | - Susan K Lutgendorf
- Department of Urology, University of Iowa , Iowa City, Iowa.,Department of Psychological and Brain Sciences, University of Iowa , Iowa City, Iowa.,Department of Obstetrics and Gynecology, University of Iowa , Iowa City, Iowa
| | - Catherine S Bradley
- Department of Urology, University of Iowa , Iowa City, Iowa.,Department of Obstetrics and Gynecology, University of Iowa , Iowa City, Iowa
| | - Andrew Schrepf
- Department of Psychological and Brain Sciences, University of Iowa , Iowa City, Iowa.,Department of Anesthesiology, University of Michigan , Ann Arbor, Michigan
| | | | | | - Timothy J Ness
- Department of Anesthesiology and Perioperative Medicine, University of Alabama at Birmingham , Birmingham, Alabama
| | - Karl J Kreder
- Department of Urology, University of Iowa , Iowa City, Iowa.,Department of Obstetrics and Gynecology, University of Iowa , Iowa City, Iowa
| | | | - Yi Luo
- Department of Urology, University of Iowa , Iowa City, Iowa
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Acetylation of HMGB1 by JNK1 Signaling Promotes LPS-Induced Peritoneal Mesothelial Cells Apoptosis. BIOMED RESEARCH INTERNATIONAL 2018; 2018:2649585. [PMID: 30539006 PMCID: PMC6260401 DOI: 10.1155/2018/2649585] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Revised: 10/10/2018] [Accepted: 10/30/2018] [Indexed: 01/16/2023]
Abstract
Increased high mobility group box 1 (HMGB1) in dialysis effluence is associated with the presence of peritoneal dialysis-related peritonitis in patients and peritoneal dysfunction in acute peritonitis mice model, but it remains unclear whether HMGB1 is involved in peritoneal mesothelial cell injury and functions via molecular posttranslational modifications by acetylation in this process. Here we first showed correlation between HMGB1 acetylation level in dialysis effluence of patients and occurrence of Gram-negative peritonitis. The increased level of acetylated HMGB1 was similarly observed under the lipopolysaccharides (LPS) treatment in both human peritoneal mesothelial cell line (HMrSV5) and mice visceral peritoneum tissue. Overexpression of wild-type, but not hypoacetylation mutant of HMGB1, enhanced LPS-induced apoptosis in HMrSV5 cells, which was accompanied by elevated protein levels of BAX and cleaved-caspase 3 compared to the control. Pretreatment of HMrSV5 cell with JNK inhibitor attenuated LPS-induced HMGB1 acetylation. Consistently, primary peritoneal mesothelial cells from Jnk1-/- mice showed a lower protein contents of acetylated HMGB1, fewer apoptosis, and decreased protein expression of BAX and cleaved-caspase3 after LPS exposure, as compared to those from wild-type mice. In conclusion, our data demonstrated HMGB1 promotes LPS-induced peritoneal mesothelial cells apoptosis, which is associated with JNK1-mediated upregulation of HMGB1 acetylation.
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HMBG1 as a Driver of Inflammatory and Immune Processes in the Pathogenesis of Ocular Diseases. J Ophthalmol 2018; 2018:5195290. [PMID: 30473885 PMCID: PMC6220384 DOI: 10.1155/2018/5195290] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 06/14/2018] [Accepted: 07/30/2018] [Indexed: 12/21/2022] Open
Abstract
High-mobility group box 1 (HMGB1) is a nuclear protein that can also act as an extracellular trigger of inflammation, proliferation, and migration in eye diseases. It induces signaling pathways by binding to the receptor for advanced glycation end products (RAGE) and Toll-like receptors (TLRs) 2, 4, and 9. This proinflammatory activity is considered to be important in the pathogenesis of a wide range of ocular diseases resulting from hemodynamic changes, presence of neovascular endothelial cells, secretion of intraocular immune factors or inflammation, and apoptosis of retinal cell layers. Further work is needed to elucidate in detail how HMGB1 contributes to ocular disease and how its damaging activity can be modulated. In this review, we summarize current knowledge on HMGB1 as a ligand that can evoke inflammation and immune responses in ocular diseases.
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Brambilla L, Martorana F, Guidotti G, Rossi D. Dysregulation of Astrocytic HMGB1 Signaling in Amyotrophic Lateral Sclerosis. Front Neurosci 2018; 12:622. [PMID: 30210286 PMCID: PMC6123379 DOI: 10.3389/fnins.2018.00622] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 08/17/2018] [Indexed: 12/13/2022] Open
Abstract
Astrocytes have emerged as critical elements for the maintenance and function of the central nervous system. The expression on their cell membrane of RAGE and TLR4 receptors makes astrocytes susceptible to High-mobility group box 1 (HMGB1), a nuclear protein typically released in the extracellular milieu by living cells experiencing physiological stress conditions or by damaged cells. Here, we show that the interaction of HMGB1 with normal spinal cord astrocytes induces the astrocytic production of neurotrophic factors, particularly brain-derived neurotrophic factor (BDNF) and glial cell line-derived neurotrophic factor (GDNF). Multiple investigations suggest a role for HMGB1 in amyotrophic lateral sclerosis (ALS). Yet, no mechanistic information on the implication of HMGB1 signaling in this disorder is currently available. We demonstrate that non-transgenic and transgenic SOD1WT spinal motor neurons exhibit only a basal nucleus-to-cytoplasm shuttling of the HMGB1 protein. Conversely, in SOD1G93A ALS mouse spinal cords, HMGB1 significantly translocates from the nucleus to the cytoplasm of motor neurons, thereby suggesting that it may be eventually released in the extracellular environment during the progression of the disease. We postulate that extracellular HMGB1 can paracrinally interact with the neighboring astrocytes in an attempt to counteract the neurodegenerative process. Yet, at variance with normal cells, SOD1G93A-expressing astrocytes show impaired capacity to raise BDNF and GDNF levels upon HMGB1 stimulation. Our data suggest that HMGB1 have a potential to promote neuroprotective actions by healthy astrocytes. However, this neurotrophic response is disrupted in ALS astrocytes. This indicates that diseased astroglial cells may exacerbate motor neuron degeneration in ALS because of the loss of their neurosupportive functions.
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Affiliation(s)
- Liliana Brambilla
- Laboratory for Research on Neurodegenerative Disorders, IRCCS Istituti Clinici Scientifici Maugeri (ICS Maugeri), Pavia, Italy
| | - Francesca Martorana
- Laboratory for Research on Neurodegenerative Disorders, IRCCS Istituti Clinici Scientifici Maugeri (ICS Maugeri), Pavia, Italy
| | - Giulia Guidotti
- Laboratory for Research on Neurodegenerative Disorders, IRCCS Istituti Clinici Scientifici Maugeri (ICS Maugeri), Pavia, Italy
| | - Daniela Rossi
- Laboratory for Research on Neurodegenerative Disorders, IRCCS Istituti Clinici Scientifici Maugeri (ICS Maugeri), Pavia, Italy
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50
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Moehring F, Waas M, Keppel TR, Rathore D, Cowie AM, Stucky CL, Gundry RL. Quantitative Top-Down Mass Spectrometry Identifies Proteoforms Differentially Released during Mechanical Stimulation of Mouse Skin. J Proteome Res 2018; 17:2635-2648. [PMID: 29925238 PMCID: PMC6195672 DOI: 10.1021/acs.jproteome.8b00109] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Mechanotransduction refers to the processes whereby mechanical stimuli are converted into electrochemical signals that allow for the sensation of our surrounding environment through touch. Despite its fundamental role in our daily lives, the molecular and cellular mechanisms of mechanotransduction are not yet well-defined. Previous data suggest that keratinocytes may release factors that activate or modulate cutaneous sensory neuron terminals, including small molecules, lipids, peptides, proteins, and oligosaccharides. This study presents a first step toward identifying soluble mediators of keratinocyte-sensory neuron communication by evaluating the potential for top-down mass spectrometry to identify proteoforms released during 1 min of mechanical stimulation of mouse skin from naı̈ve animals. Overall, this study identified 47 proteoforms in the secretome of mouse hind paw skin, of which 14 were differentially released during mechanical stimulation, and includes proteins with known and previously unknown relevance to mechanotransduction. Finally, this study outlines a bioinformatic workflow that merges output from two complementary analysis platforms for top-down data and demonstrates the utility of this workflow for integrating quantitative and qualitative data.
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Affiliation(s)
- Francie Moehring
- Department of Cell Biology, Neurobiology, and Anatomy, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Matthew Waas
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Theodore R. Keppel
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, WI 53226, USA
- Center for Biomedical Mass Spectrometry Research, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Deepali Rathore
- Center for Biomedical Mass Spectrometry Research, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Ashley M. Cowie
- Department of Cell Biology, Neurobiology, and Anatomy, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Cheryl L. Stucky
- Department of Cell Biology, Neurobiology, and Anatomy, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Rebekah L. Gundry
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, WI 53226, USA
- Center for Biomedical Mass Spectrometry Research, Medical College of Wisconsin, Milwaukee, WI 53226, USA
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