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Li Z, Wu Q, Yan N. A structural atlas of druggable sites on Na v channels. Channels (Austin) 2024; 18:2287832. [PMID: 38033122 PMCID: PMC10732651 DOI: 10.1080/19336950.2023.2287832] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 11/20/2023] [Indexed: 12/02/2023] Open
Abstract
Voltage-gated sodium (Nav) channels govern membrane excitability by initiating and propagating action potentials. Consistent with their physiological significance, dysfunction, or mutations in these channels are associated with various channelopathies. Nav channels are thereby major targets for various clinical and investigational drugs. In addition, a large number of natural toxins, both small molecules and peptides, can bind to Nav channels and modulate their functions. Technological breakthrough in cryo-electron microscopy (cryo-EM) has enabled the determination of high-resolution structures of eukaryotic and eventually human Nav channels, alone or in complex with auxiliary subunits, toxins, and drugs. These studies have not only advanced our comprehension of channel architecture and working mechanisms but also afforded unprecedented clarity to the molecular basis for the binding and mechanism of action (MOA) of prototypical drugs and toxins. In this review, we will provide an overview of the recent advances in structural pharmacology of Nav channels, encompassing the structural map for ligand binding on Nav channels. These findings have established a vital groundwork for future drug development.
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Affiliation(s)
- Zhangqiang Li
- Beijing Frontier Research Center for Biological Structures, State Key Laboratory of Membrane Biology, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, China
| | - Qiurong Wu
- Beijing Frontier Research Center for Biological Structures, State Key Laboratory of Membrane Biology, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, China
| | - Nieng Yan
- Beijing Frontier Research Center for Biological Structures, State Key Laboratory of Membrane Biology, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, China
- Shenzhen Medical Academy of Research and Translation, Shenzhen, Guangdong Province, China
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2
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Borgonetti V, Morozzi M, Galeotti N. Neuroinflammation evoked mechanisms for neuropathic itch in the spared nerve injury mouse model of neuropathic pain. Neuropharmacology 2024; 259:110120. [PMID: 39159835 DOI: 10.1016/j.neuropharm.2024.110120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2024] [Revised: 08/11/2024] [Accepted: 08/16/2024] [Indexed: 08/21/2024]
Abstract
A large portion of neuropathic pain suffering patients may also concurrently experience neuropathic itch, with a negative impact on the quality of life. The limited understanding of neuropathic itch and the low efficacy of current anti-itch therapies dictate the urgent need of a better comprehension of molecular mechanisms involved and development of relevant animal models. This study was aimed to characterize the itching phenotype in a model of trauma-induced peripheral neuropathy, the spared nerve injury (SNI), and the molecular events underlying the overlap with the nociceptive behavior. SNI mice developed hyperknesis and spontaneous itch 7-14 days after surgery that was prevented by gabapentin treatment. Itch was associated with pain hypersensitivity, loss of intraepidermal nerve fiber (IENF) density and increased epidermal thickness. In coincidence with the peak of scratching behavior, SNI mice showed a spinal overexpression of IBA1 and GFAP, microglia and astrocyte markers respectively. An increase of the itch neuropeptide B-type natriuretic peptide (BNP) in NeuN+ cells, of its downstream effector interleukin 17 (IL17) along with increased pERK1/2 levels occurred in the spinal cord dorsal horn and DRG. A raise in BNP and IL17 was also detected at skin level. Stimulation of HaCat cells with conditioned medium from BV2-stimulated SH-SY5Y cells produced a dramatic reduction of HaCat cell viability. This study showed that SNI mice might represent a model for neuropathic itch and pain. Collectively, our finding suggest that neuropathic itch might initiate at spinal level, then affecting skin epidermis events, through a glia-mediated neuroinflammation-evoked BNP/IL17 mechanism.
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Affiliation(s)
- Vittoria Borgonetti
- Department of Neurosciences, Psychology, Drug Research and Child Health (Neurofarba), University of Florence, Viale G. Pieraccini 6, Florence, Italy
| | - Martina Morozzi
- Department of Neurosciences, Psychology, Drug Research and Child Health (Neurofarba), University of Florence, Viale G. Pieraccini 6, Florence, Italy
| | - Nicoletta Galeotti
- Department of Neurosciences, Psychology, Drug Research and Child Health (Neurofarba), University of Florence, Viale G. Pieraccini 6, Florence, Italy.
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3
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Feng HN, Zhong LQY, Xu CX, Wang TT, Wu H, Wang L, Traub RJ, Chen X, Cao DY. Up-regulation of IL-1β and sPLA2-III in the medial prefrontal cortex contributes to orofacial and somatic hyperalgesia induced by malocclusion via glial-neuron crosstalk. Eur J Pharmacol 2024; 982:176933. [PMID: 39182540 DOI: 10.1016/j.ejphar.2024.176933] [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: 05/24/2024] [Revised: 08/21/2024] [Accepted: 08/22/2024] [Indexed: 08/27/2024]
Abstract
The medial prefrontal cortex (mPFC) has been identified as a key brain region involved in the modulation of chronic pain. Our recent study demonstrated that unilateral anterior crossbite (UAC) developed the comorbidity model of temporomandibular disorders (TMD) and fibromyalgia syndrome (FMS), which was characterized by both orofacial and somatic hyperalgesia. In the present study, UAC rats exhibited significant changes in gene expression in the mPFC. Enrichment analysis revealed that the significantly involved pathways were cytokines-cytokine receptor interaction and immune response. The expression of group III secretory phospholipase A2 (sPLA2-III) was significantly increased in the mPFC of UAC rats. Silencing sPLA2-III expression in the mPFC blocked the orofacial and somatic hyperalgesia. Immunofluorescence showed that sPLA2-III was mainly localized in neurons. The expression of interleukin-1β (IL-1β) in the mPFC significantly increased after UAC. Injection of IL-1β antibody into the mPFC blocked orofacial and somatic hyperalgesia. IL-1β was mainly localized in microglia cells. Furthermore, injection of IL-1β antibody significantly reduced the expression of sPLA2-III. These results indicate that neuroinflammatory cascade responses induced by glial-neuron crosstalk in the mPFC may contribute to the development of TMD and FMS comorbidity, and IL-1β and sPLA2-III are identified as novel potential therapeutic targets for the treatment of chronic pain in the comorbidity of TMD and FMS.
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Affiliation(s)
- Hai-Nan Feng
- Department of Stomatology, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an, Shaanxi, 710061, China; Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, Testing Center of Stomatology, Xi'an Jiaotong University College of Stomatology, 98 West 5th Road, Xi'an, Shaanxi, 710004, China
| | - Liang-Qiu-Yue Zhong
- Department of Stomatology, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Chen-Xi Xu
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, Testing Center of Stomatology, Xi'an Jiaotong University College of Stomatology, 98 West 5th Road, Xi'an, Shaanxi, 710004, China
| | - Ting-Ting Wang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, Testing Center of Stomatology, Xi'an Jiaotong University College of Stomatology, 98 West 5th Road, Xi'an, Shaanxi, 710004, China
| | - Hao Wu
- Department of Stomatology, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Lu Wang
- Department of Stomatology, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Richard J Traub
- Department of Neural and Pain Sciences, School of Dentistry, the UM Center to Advance Chronic Pain Research, University of Maryland Baltimore, Baltimore, MD, 21201, USA
| | - Xi Chen
- Department of Stomatology, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an, Shaanxi, 710061, China.
| | - Dong-Yuan Cao
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, Testing Center of Stomatology, Xi'an Jiaotong University College of Stomatology, 98 West 5th Road, Xi'an, Shaanxi, 710004, China; Department of Neural and Pain Sciences, School of Dentistry, the UM Center to Advance Chronic Pain Research, University of Maryland Baltimore, Baltimore, MD, 21201, USA.
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4
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Zhu M, Luo J, Zhang B, Li K, Li Y, Zhang Q, Wang H, Hou C. An afferent nerve-like electronic device with somatic mechanical perception and sensation management. Biosens Bioelectron 2024; 263:116625. [PMID: 39116630 DOI: 10.1016/j.bios.2024.116625] [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: 03/25/2024] [Revised: 07/30/2024] [Accepted: 07/31/2024] [Indexed: 08/10/2024]
Abstract
Tactile and pain perception are essential for biological skin to interact with the external environment. This complex interplay of sensations allows for the detection of potential threats and appropriate responses to stimuli. However, the challenge is to enable flexible electronics to respond to mechanical stimuli such as biological skin, and researchers have not clearly reported the successful integration of somatic mechanical perception and sensation management functions into neuro-like electronics. In this work, an afferent nerve-like device with a pressure sensor and a perception management module is proposed. The pressure sensor comprises two conductive fabric layers and an ionic hydrogel, forming a capacitor structure that emulates the swift transition from tactile to pain perception under mechanical stimulation. Drawing inspiration from the neuronal "gate control" mechanism, the sensation management module adjusts signals in response to rubbing, accelerating the discharge process and reducing the perception duration, thereby replicating the inhibitory effect of biological neurons on pain following tactile interference. This integrated device, encompassing somatic mechanical perception and sensation management, holds promise for applications in soft robotics, prosthetics, and human-machine interaction.
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Affiliation(s)
- Ming Zhu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, PR China
| | - Jiabei Luo
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, PR China
| | - Bin Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, PR China
| | - Kerui Li
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, PR China
| | - Yaogang Li
- Engineering Research Center of Advanced Glasses Manufacturing Technology, Ministry of Education, Donghua University, Shanghai, 201620, PR China
| | - Qinghong Zhang
- Engineering Research Center of Advanced Glasses Manufacturing Technology, Ministry of Education, Donghua University, Shanghai, 201620, PR China
| | - Hongzhi Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, PR China
| | - Chengyi Hou
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, PR China.
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Leisengang S. Pain research in a petri dish? Advantages and limitations of neuro-glial primary cell cultures from structures of the nociceptive system. Brain Behav Immun Health 2024; 41:100854. [PMID: 39308957 PMCID: PMC11415590 DOI: 10.1016/j.bbih.2024.100854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 06/26/2024] [Accepted: 09/03/2024] [Indexed: 09/25/2024] Open
Abstract
How can we learn more about pain without causing pain in humans or animals? This short review focuses on neuro-glial primary cell cultures as models to study neuro-immune interactions in the context of pain and discusses their advantages and limitations. The field of basic pain research places scientists in an ethical dilemma. We aim to understand underlying mechanisms of pain for an improved pain therapy for humans and animals. At the same time, this regularly includes the induction of pain in model animals. Within the field of psychoneuroimmunology, the examination of the complexity of neuro-immune interactions in health and disease as well as the bi-directional communication between the brain and the periphery make animal experiments an inevitable part of pain research. To address ethical and legal considerations as well as the growing societal awareness for animal welfare, scientists push for the identification and characterization of complementary methods to implement the 3R principle of Russel and Burch. As such, methods to replace animal studies, reduce the number of animals used, and refine experiments are tested. Neuro-glial primary cell cultures of structures of the nociceptive system, such as dorsal root ganglia (DRG) or the spinal dorsal horn (SDH) represent useful in vitro tools, when research comes to a cellular and molecular level. They allow for studying mechanisms of neuronal sensitization, glial cell activation, or the role of specific inflammatory mediators and intracellular signaling cascades involved in the development of inflammatory and neuropathic pain. Moreover, DRG/SDH-cultures provide the opportunity to test novel strategies for interventions, such as pharmaceuticals or cell-based therapies targeting neuroinflammatory processes. Thereby, in vitro models contribute to a better understanding of neuron-glia-immune communication in the context of pain and in the advancement of pain therapies. However, this can only be one piece in a large puzzle. Our knowledge about the complexity of pain will depend on studies in humans and animals applied in vitro and in vivo and will benefit from clear and open-minded interdisciplinary communication and transparency in public outreach.
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Affiliation(s)
- Stephan Leisengang
- Institute of Veterinary Physiology and Biochemistry, Justus Liebig University Giessen, Frankfurter Strasse 100, 35392 Giessen, Germany
- Translational Neuroscience Network Giessen (TNNG), Justus Liebig University Giessen, Germany
- Center for Mind, Brain and Behavior (CMBB), Philipps University Marburg & Justus Liebig University Giessen, Germany
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Navajas Acedo J. Complete persistence of the primary somatosensory system in zebrafish. Dev Biol 2024; 515:178-185. [PMID: 39021074 DOI: 10.1016/j.ydbio.2024.05.004] [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: 02/12/2024] [Revised: 03/20/2024] [Accepted: 05/07/2024] [Indexed: 07/20/2024]
Abstract
The somatosensory system detects peripheral stimuli that are translated into behaviors necessary for survival. Fishes and amphibians possess two somatosensory systems in the trunk: the primary somatosensory system, formed by the Rohon-Beard neurons, and the secondary somatosensory system, formed by the neural crest cell-derived neurons of the Dorsal Root Ganglia. Rohon-Beard neurons have been characterized as a transient population that mostly disappears during the first days of life and is functionally replaced by the Dorsal Root Ganglia. Here, I follow Rohon-Beard neurons in vivo and show that the entire repertoire remains present in zebrafish from 1-day post-fertilization until the juvenile stage, 15-days post-fertilization. These data indicate that zebrafish retain two complete somatosensory systems until at least a developmental stage when the animals display complex behavioral repertoires.
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Affiliation(s)
- Joaquín Navajas Acedo
- Biozentrum at University of Basel, Spitalstrasse 41, Basel, Switzerland; Allen Discovery Center for Cell Lineage Tracing, University of Washington, Seattle, WA, USA.
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Liu Y, Jin F, Zhou L, Li X, Li X, Chen Q, Yang S, Sun J, Qi F. Platelet-derived Growth Factor Receptor-α Induces Contraction Knots and Inflammatory Pain-like Behavior in a Rat Model of Myofascial Trigger Points. Anesthesiology 2024; 141:929-945. [PMID: 39058323 PMCID: PMC11463032 DOI: 10.1097/aln.0000000000005167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 07/16/2024] [Indexed: 07/28/2024]
Abstract
BACKGROUND Myofascial trigger points (MTrPs) are the primary etiological characteristics of chronic myofascial pain syndrome. Receptor tyrosine kinases (RTKs) are associated with signal transduction in the central mechanisms of chronic pain, but the role of RTKs in the peripheral mechanisms of MTrPs remains unclear. The current study aimed to identify RTKs expression in MTrPs and elucidate the molecular mechanisms through which platelet-derived growth factor receptor-α (PDGFR-α) induces contraction knots and inflammatory pain-like behavior in a rat model of myofascial trigger points. METHODS MTrPs tissue samples were obtained from the trapezius muscles of patients with myofascial pain syndrome through needle biopsy, and PDGFR-α activation was analyzed by microarray, enzyme-linked immunosorbent assay, and histological staining. Sprague-Dawley rats (male and female) were used to investigate PDGFR-α signaling, assessing pain-like behaviors with Randall-Selitto and nest-building tests. Muscle fiber and sarcomere morphologies were observed using histology and electron microscopy. The PDGFR-α binding protein was identified by coimmunoprecipitation, liquid chromatograph mass spectrometer, and molecular docking. PDGFR-α-related protein or gene levels, muscle contraction, and inflammatory markers were determined by Western blot and reverse-transcription quantitative polymerase chain reaction. RESULTS PDGFR-α phosphorylation levels were elevated in the MTrPs tissues of individuals with trapezius muscle pain and were positively correlated with pain intensity. In rats, PDGFR-α activation caused pain-like behaviors and muscle contraction via the Janus kinase 2/signal transducer and activator of transcription-3 (JAK2/STAT3) pathway. JAK2/STAT3 inhibitors reversed the pain-like behaviors and muscle contraction induced by PDGFR-α activation. Collagen type I α 1 (COL1A1) binds to PDGFR-α and promotes its phosphorylation, which contributed to pain-like behaviors and muscle contraction. CONCLUSIONS COL1A1-induced phosphorylation of PDGFR-α and the subsequent activation of the JAK2/STAT3 pathway may induce dysfunctional muscle contraction and increased nociception at MTrPs. EDITOR’S PERSPECTIVE
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Affiliation(s)
- Yu Liu
- Department of Anesthesiology, and Research Center for Basic Medical Sciences, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Feihong Jin
- Department of Anesthesiology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Lingwei Zhou
- Department of Anesthesiology, and Research Center for Basic Medical Sciences, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Xuan Li
- Department of Anesthesiology, and Research Center for Basic Medical Sciences, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Xiaoyue Li
- Department of Anesthesiology, and Research Center for Basic Medical Sciences, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Qinghe Chen
- Department of Anesthesiology, and Research Center for Basic Medical Sciences, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Shaozhong Yang
- Department of Anesthesiology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Jintang Sun
- Research Center for Basic Medical Sciences, Qilu Hospital, Shandong University, Jinan, China
| | - Feng Qi
- Department of Anesthesiology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
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Kim H, Shim WS, Oh U. Anoctamin 1, a multi-modal player in pain and itch. Cell Calcium 2024; 123:102924. [PMID: 38964236 DOI: 10.1016/j.ceca.2024.102924] [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: 03/04/2024] [Revised: 06/05/2024] [Accepted: 06/13/2024] [Indexed: 07/06/2024]
Abstract
Anoctamin 1 (ANO1/TMEM16A) encodes a Ca2+-activated Cl- channel. Among ANO1's many physiological functions, it plays a significant role in mediating nociception and itch. ANO1 is activated by intracellular Ca2+ and depolarization. Additionally, ANO1 is activated by heat above 44 °C, suggesting heat as another activation stimulus. ANO1 is highly expressed in nociceptors, indicating a role in nociception. Conditional Ano1 ablation in dorsal root ganglion (DRG) neurons results in a reduction in acute thermal pain, as well as thermal and mechanical allodynia or hyperalgesia evoked by inflammation or nerve injury. Pharmacological interventions also lead to a reduction in nocifensive behaviors. ANO1 is functionally linked to the bradykinin receptor and TRPV1. Bradykinin stimulates ANO1 via IP3-mediated Ca2+ release from intracellular stores, whereas TRPV1 stimulates ANO1 via a combination of Ca2+ influx and release. Nerve injury causes upregulation of ANO1 expression in DRG neurons, which is blocked by ANO1 antagonists. Due to its role in nociception, strong and specific ANO1 antagonists have been developed. ANO1 is also expressed in pruritoceptors, mediating Mas-related G protein-coupled receptors (Mrgprs)-dependent itch. The activation of ANO1 leads to chloride efflux and depolarization due to high intracellular chloride concentrations, causing pain and itch. Thus, ANO1 could be a potential target for the development of new drugs treating pain and itch.
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Affiliation(s)
- Hyungsup Kim
- Department of Biotechnology, College of Engineering, The University of Suwon, Hwaseong, 18323, Republic of Korea
| | - Won-Sik Shim
- College of Pharmacy, Gachon University, Incheon 21936, Republic of Korea
| | - Uhtaek Oh
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea; Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul 08826, Republic of Korea.
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Santos AD, Oliveira AS, Carvalho MTB, Barreto AS, Quintans JDSS, Quintans Júnior LJ, Barreto RDSS. H. pectinata (L.) Poit - Traditional uses, phytochemistry and biological-pharmacological activities in preclinical studies: A systematic review. JOURNAL OF ETHNOPHARMACOLOGY 2024; 333:118478. [PMID: 38909822 DOI: 10.1016/j.jep.2024.118478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 05/30/2024] [Accepted: 06/20/2024] [Indexed: 06/25/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE H. pectinata (L.) Poit, popularly known as "sambacaitá" or "canudinho", is a plant endemic to north-eastern Brazil. Its aerial parts, leaves and flowers have traditionally been used to treat gastrointestinal disorders, rhinopharyngitis, nasal congestion, bacterial and fungal infections, fever, colic, inflammation, and pain. AIM OF THE STUDY The aim of this review was to provide information on the botanical characteristics, ethnomedicinal uses, phytochemistry and biological-pharmacological activities of H. pectinata. MATERIALS AND METHODS This systematic review followed the Cochrane Handbook Collaboration and the PRISMA guidelines. The review question was what are the biological-pharmacological activities of H. pectinata presented in non-clinical studies. The search for articles was conducted in the Medline (via PubMed), Embase, Web of Science, Scopus, Virtual Health Library, SciELO, Google Scholar and the Brazilian Digital Library of Theses and Dissertations databases. Two reviewers independently selected the studies that met the inclusion criteria, extracted the data, and assessed the risk of bias of the included studies. RESULTS 39 articles were included in this review, of which 19 reported in vitro experiments, 16 in vivo studies and 4 in vivo and in vitro experiments. H. pectinata is a plant widely used in folk medicine in north-eastern Brazil for the treatment of various ailments, such as respiratory diseases, gastrointestinal disorders, bacterial and fungal infections, and general inflammation. Supporting its popular use, several in vitro and in vivo pharmacological investigations of the essential oil and extract of H. pectinata have demonstrated their anti-inflammatory, antinociceptive, antioxidant, antidepressant, anticancer, hepatoregenerative, healing, and antimicrobial activities. H. pectinata has been reported to contain 75 bioactive constituents, comprising 9 flavonoids, 54 terpenes, and 12 other compounds. CONCLUSION H. pectinata is a plant commonly used in traditional medicine. Phytochemically, it contains several bioactive constituents, including terpenes and flavonoids, and has been shown to have antinociceptive, anti-inflammatory, antimicrobial and antitumour activity, as well as hepatorregenerative and healing effects, and low toxicity.
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Affiliation(s)
- Adenilson Dos Santos
- Graduate Program in Health Sciences, Federal University of Sergipe, Aracaju, Sergipe, Brazil
| | - Alan Santos Oliveira
- Graduate Program in Health Sciences, Federal University of Sergipe, Aracaju, Sergipe, Brazil
| | | | - André Sales Barreto
- Graduate Program in Health Sciences, Federal University of Sergipe, Aracaju, Sergipe, Brazil; Department of Health Education, Federal University of Sergipe, Lagarto, Sergipe, Brazil
| | - Jullyana de Souza Siqueira Quintans
- Graduate Program in Health Sciences, Federal University of Sergipe, Aracaju, Sergipe, Brazil; Department of Physiology, Federal University of Sergipe, São Cristóvão, Sergipe, Brazil
| | - Lucindo José Quintans Júnior
- Graduate Program in Health Sciences, Federal University of Sergipe, Aracaju, Sergipe, Brazil; Department of Physiology, Federal University of Sergipe, São Cristóvão, Sergipe, Brazil
| | - Rosana de Souza Siqueira Barreto
- Graduate Program in Health Sciences, Federal University of Sergipe, Aracaju, Sergipe, Brazil; Department of Health Education, Federal University of Sergipe, Lagarto, Sergipe, Brazil.
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Lu YY, Lin CY, Lu CC, Tsai HP, Wang WT, Zhang ZH, Wu CH. Bleomycin triggers chronic mechanical nociception by activating TRPV1 and glial reaction-mediated neuroinflammation via TSLP/TSLPR/pSTAT5 signals. Brain Res Bull 2024; 217:111081. [PMID: 39277019 DOI: 10.1016/j.brainresbull.2024.111081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2024] [Revised: 09/02/2024] [Accepted: 09/11/2024] [Indexed: 09/17/2024]
Abstract
Chronic pain is a universal public health problem with nearly one third of global human involved, which causes significant distressing personal burden. After painful stimulus, neurobiological changes occur not only in peripheral nervous system but also in central nervous system where somatosensory cortex is important for nociception. Being an ion channel, transient receptor potential vanilloid 1 (TRPV1) act as an inflammatory detector in the brain. Thymic stromal lymphopoietin (TSLP) is a potent neuroinflammation mediator after nerve injury. Bleomycin is applied to treat dermatologic diseases, and its administration elicits local painful sensation. However, whether bleomycin administration can cause chronic pain remains unknown. In the present study, we aimed to investigate how mice develop chronic pain after receiving repeated bleomycin administration. In addition, the relevant neurobiological brain changes after noxious stimuli were clarified. C57BL/6 mice aged five- to six-weeks were randomly classified into two group, PBS (normal) group and bleomycin group which bleomycin was intradermally administered to back five times a week over a three-week period. Calibrated forceps testing was used to measure mouse pain threshold. Western blots were used to assess neuroinflammatory response; immunofluorescence assay was used to measure the status of neuron apoptosis, glial reaction, and neuro-glial communication. Bleomycin administration induced mechanical nociception and activated both TRPV1 and TSLP/TSLPR/pSTAT5 signals in mouse somatosensory cortex. Through these pathways, bleomycin not only activates glial reaction but also causes neuronal apoptosis. TRPV1 and TSLP/TSLPR/pSTAT5 signaling had co-labeled each other by immunofluorescence assay. Taken together, our study provides a new chronic pain model by repeated intradermal bleomycin injection by activating TRPV1 and glial reaction-mediated neuroinflammation via TSLP/TSLPR/pSTAT5 signals.
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Affiliation(s)
- Ying-Yi Lu
- Department of Dermatology, Kaohsiung Veterans General Hospital, Kaohsiung 813; School of Medicine, College of Medicine, National Sun Yat-sen University, Kaohsiung 804, Taiwan; Department of Health and Beauty, Shu-Zen Junior College of Medicine and Management, Kaohsiung 82144, Taiwan
| | - Chia-Yang Lin
- Department of Nuclear Medicine, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan
| | - Chun-Ching Lu
- Department of Orthopaedics and Traumatology, National Yang Ming Chiao Tung University Hospital, Yilan 260006, Taiwan; Department of Orthopaedics, School of Medicine, National Yang Ming Chiao Tung University, Taipei 112201, Taiwan
| | - Hung-Pei Tsai
- Division of Neurosurgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan
| | - Wei-Ting Wang
- National Defense Medical Center, Department of Radiology, Tri-Service General Hospital, Taipei City 114202, Taiwan
| | - Zi-Hao Zhang
- Department of Neurosurgery, Xinle City Hospital, Xinle, Hebei 050700, PR China
| | - Chieh-Hsin Wu
- Division of Neurosurgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan; Department of Surgery, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; Center for Big Data Research, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
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11
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Huerta MÁ, Marcos-Frutos D, Nava JDL, García-Ramos A, Tejada MÁ, Roza C. P2X3 and P2X2/3 receptors inhibition produces a consistent analgesic efficacy: A systematic review and meta-analysis of preclinical studies. Eur J Pharmacol 2024; 984:177052. [PMID: 39393665 DOI: 10.1016/j.ejphar.2024.177052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2024] [Revised: 08/29/2024] [Accepted: 10/07/2024] [Indexed: 10/13/2024]
Abstract
BACKGROUND P2X3 and P2X2/3 receptors are promising therapeutic targets for pain treatment and selective inhibitors are under evaluation in ongoing clinical trials. Here we aim to consolidate and quantitatively evaluate the preclinical evidence on P2X3 and P2X2/3 receptors inhibitors for pain treatment. METHODS A literature search was conducted in PubMed, Scopus and Web-of-Science on August 5, 2023. Data was extracted and meta-analyzed using a random-effects model to estimate the analgesic efficacy of the intervention; then several subgroup analyses were performed. RESULTS 67 articles were included. The intervention induced a consistent pain reduction (66.5 [CI95% = 58.5, 74.5]; p < 0.0001), which was highest for visceral pain (114.3), followed by muscle (79.8) and neuropathic pain (71.1), but lower for cancer (64.1), joint (57.5) and inflammatory pain (49.0). Further analysis showed a greater effect for mechanical hypersensitivity (70.4) compared to heat hypersensitivity (64.5) and pain-related behavior (54.1). Sex (male or female) or interspecies (mice or rats) differences were not appreciated (p > 0.05). The most used molecule was A-317491, but other such as gefapixant or eliapixant were also effective (p < 0.0001 for all). The analgesic effect was higher for systemic or peripheral administration than for intrathecal administration. Conversely, intracerebroventricular administration was not analgesic, but potentiated pain. CONCLUSION P2X3 and P2X2/3 receptor inhibitors showed a good analgesic efficacy in preclinical studies, which was dependent on the pain etiology, pain outcome measured, the drug used and its route of administration. Further research is needed to assess the clinical utility of these preclinical findings. PROTOCOL REGISTRATION PROSPERO ID CRD42023450685.
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Affiliation(s)
- Miguel Á Huerta
- Department of Pharmacology, Faculty of Medicine, University of Granada, Granada, Spain; Biomedical Research Center, Institute of Neuroscience, University of Granada, Granada, Spain; Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), Granada, Spain
| | - Daniel Marcos-Frutos
- Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain
| | - Javier de la Nava
- Unit for Active Coping Strategies for Pain in Primary Care, East-Valladolid Primary Care Management, Castilla and Leon Public Health System (Sacyl), Valladolid, Spain
| | - Amador García-Ramos
- Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain; Department of Sports Sciences and Physical Conditioning, Faculty of Education, Universidad Católica de la Santísima Concepción, Concepción, Chile
| | - Miguel Ángel Tejada
- Department of Pharmacology, Faculty of Medicine, University of Granada, Granada, Spain; Biomedical Research Center, Institute of Neuroscience, University of Granada, Granada, Spain; Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), Granada, Spain.
| | - Carolina Roza
- Department of System's Biology, Medical School, University of Alcala, Alcalá de Henares, 28871, Madrid, Spain
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12
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Chen D, Zhang Y, Zhou Y, Liang Z. Association of Short-term Pain and Chronic Pain Intensity With Cardiometabolic Multimorbidity Progression: A Multistate Markov Model Analysis. Anesth Analg 2024:00000539-990000000-00973. [PMID: 39383101 DOI: 10.1213/ane.0000000000007228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/11/2024]
Abstract
BACKGROUND The impact of pain intensity on the progression trajectories of cardiometabolic multimorbidity (CMM) is not well understood. We attempted to dissect the relationship of short-term pain (STP) and chronic pain intensity with the temporal progression of CMM. METHODS We conducted a prospective cohort study based on the UK Biobank participants. Incident cases of cardiometabolic diseases (CMDs) were identified based on self-reported information and multiple health-related records in the UK Biobank. CMM was defined as the occurrence of at least 2 CMDs, including heart failure (HF), ischemic heart disease (IHD), stroke, and type 2 diabetes (T2D). The pain intensity was categorized into 5 levels based on pain duration and the number of sites involved, including chronic widespread pain (CWSP), chronic multilocation pain (CMLP), chronic single-location pain (CSLP), STP, and free-of-pain (FOP). Multistate models were used to assess the impact of pain intensity on the CMM trajectories from enrollment to initial cardiometabolic disease (ICMD), subsequently to CMM, and ultimately to death. RESULTS A total of 429,145 participants were included. Over the course of a 12.8-year median follow-up, 13.1% (56,137/429,145) developed ICMD, 19.6% (10,979/56,137) further progressed to CMM, and a total of 5.3% (22,775/429,145) died. Compared with FOP, CMLP (hazard ratio [HR], 1.11; 95% confidence interval [CI], 1.06-1.17) and CWSP (HR, 1.26; 95% CI, 1.13-1.42) elevated the risk of transitioning from ICMD to CMM. STP (HR, 0.89; 95% CI, 0.82-0.96), CSLP (HR, 0.88; 95% CI, 0.82-0.95), and CMLP (HR, 0.87; 95% CI, 0.81-0.93) lowered the risk of transition from ICMD to mortality, and STP also reduced the risk of transition from enrollment to mortality (HR, 0.94; 95% CI, 0.89-0.98). The results of disease-specific transitions revealed that the influence of pain intensity varied across transitional stages. Specifically, CMLP and CWSP heightened the risk of conversion from T2D or IHD to CMM, whereas only CWSP substantially elevated the transition risk from HF to CMM. CONCLUSIONS Our results highlighted reductions in chronic pain may mitigate both the onset and progression of CMM, potentially having an important impact on future revisions of cardiometabolic and pain-related guidelines.
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Affiliation(s)
- Dongze Chen
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Genetics, Peking University Cancer Hospital & Institute, Beijing, China
| | - Yali Zhang
- Department of Occupational and Environmental Health Sciences, School of Public Health, Peking University, Beijing, China
| | - Yi Zhou
- Department of Third Research, Shenzhen Health Development Research and Data Management Center, Shenzhen, China
| | - Zhisheng Liang
- Department of Global Health, School of Public Health, Peking University, Beijing, China
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13
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do Nascimento AM, Marques RB, Roldão AP, Rodrigues AM, Eslava RM, Dale CS, Reis EM, Schechtman D. Exploring protein-protein interactions for the development of new analgesics. Sci Signal 2024; 17:eadn4694. [PMID: 39378285 DOI: 10.1126/scisignal.adn4694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 06/13/2024] [Accepted: 09/16/2024] [Indexed: 10/10/2024]
Abstract
The development of new analgesics has been challenging. Candidate drugs often have limited clinical utility due to side effects that arise because many drug targets are involved in signaling pathways other than pain transduction. Here, we explored the potential of targeting protein-protein interactions (PPIs) that mediate pain signaling as an approach to developing drugs to treat chronic pain. We reviewed the approaches used to identify small molecules and peptide modulators of PPIs and their ability to decrease pain-like behaviors in rodent animal models. We analyzed data from rodent and human sensory nerve tissues to build associated signaling networks and assessed both validated and potential interactions and the structures of the interacting domains that could inform the design of synthetic peptides and small molecules. This resource identifies PPIs that could be explored for the development of new analgesics, particularly between scaffolding proteins and receptors for various growth factors and neurotransmitters, as well as ion channels and other enzymes. Targeting the adaptor function of CBL by blocking interactions between its proline-rich carboxyl-terminal domain and its SH3-domain-containing protein partners, such as GRB2, could disrupt endosomal signaling induced by pain-associated growth factors. This approach would leave intact its E3-ligase functions, which are mediated by other domains and are critical for other cellular functions. This potential of PPI modulators to be more selective may mitigate side effects and improve the clinical management of pain.
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Affiliation(s)
- Alexandre Martins do Nascimento
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil
- Laboratory of Neuromodulation of Experimental Pain (LaNed), Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, SP 05508-000, Brazil
| | - Rauni Borges Marques
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil
- Interunit Graduate Program in Bioinformatics, University of São Paulo, SP 05508-000, Brazil
| | - Allan Pradelli Roldão
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil
| | - Ana Maria Rodrigues
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil
| | - Rodrigo Mendes Eslava
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil
| | - Camila Squarzoni Dale
- Laboratory of Neuromodulation of Experimental Pain (LaNed), Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, SP 05508-000, Brazil
| | - Eduardo Moraes Reis
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil
| | - Deborah Schechtman
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil
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14
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Zeng H, Zhang Z, Zhou D, Wang R, Verkhratsky A, Nie H. Investigation of the anti-inflammatory, anti-pruritic, and analgesic effects of sophocarpine inhibiting TRP channels in a mouse model of inflammatory itch and pain. JOURNAL OF ETHNOPHARMACOLOGY 2024; 337:118882. [PMID: 39366497 DOI: 10.1016/j.jep.2024.118882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2024] [Revised: 09/25/2024] [Accepted: 09/30/2024] [Indexed: 10/06/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Sophocarpine is a bioactive compound extracted from the dried root of Sophorae Flavesentis Aiton, a plant that has been used for thousands of years for various conditions including skin itch and pain. Its antipruritic and analgesic effects are suggested in publications, while the molecular mechanisms underneath interacting with TRP channels are not understood. AIM OF THE STUDY We investigated the anti-inflammatory, antipruritic, and analgesic effects of sophocarpine in a murine inflammatory itch and pain model to elucidate the underlying mechanisms. MATERIALS AND METHODS We evaluated sophocarpine's anti-pruritic and analgesic effects by monitoring mice's scratching and wiping behaviors, and the anti-inflammatory effect by measuring psoriasis area and severity index (PASI) score. The mRNA and protein expression of TRPA1/TRPV1 was analyzed by real-time quantitative polymerase chain reaction and western blotting. We further investigated the relationship between sophocarpine and TRPA1/TRPV1 in mice administered allyl-isothiocyanate (AITC) or capsaicin and by molecular docking. RESULTS We found that sophocarpine decreased scratching bouts, wipes, and the PASI score, reduced the TNF-α and IL-1β in the skin and TRPA1 and TRPV1 in the trigeminal ganglion. Pretreatment of sophocarpine decreased AITC-induced scratching bouts and wipes and capsaicin-induced wipes. We also found potential competitive bindings between sophocarpine and AITC/capsaicin to TRPA1/TRPV1. CONCLUSIONS Sophocarpine is a potential competitive inhibitor of TRPA1 and TRPV1 channels eliciting strong anti-inflammatory, anti-pruritic, and analgesic effects, suggesting its significant therapeutic potential in treating diseases with inflammatory itch and pain.
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Affiliation(s)
- Hekun Zeng
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, College of Pharmacy, Jinan University, Guangzhou, Guangdong, 510632, China.
| | - Zhe Zhang
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, College of Pharmacy, Jinan University, Guangzhou, Guangdong, 510632, China.
| | - Dan Zhou
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, College of Pharmacy, Jinan University, Guangzhou, Guangdong, 510632, China.
| | - Ranjing Wang
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, College of Pharmacy, Jinan University, Guangzhou, Guangdong, 510632, China
| | - Alexei Verkhratsky
- Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom; Achucarro Centre for Neuroscience, IKERBASQUE, Basque Foundation for Science, Bilbao, Spain; Department of Stem Cell Biology, State Research Institute Centre for Innovative Medicine, LT-01102, Vilnius, Lithuania.
| | - Hong Nie
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Ministry of Education (MOE) of China, College of Pharmacy, Jinan University, Guangzhou, Guangdong, 510632, China.
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15
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Son H, Shannonhouse J, Zhang Y, Gomez R, Amarista F, Perez D, Ellis E, Chung MK, Kim YS. Elucidation of neuronal activity in mouse models of temporomandibular joint injury and inflammation by in vivo GCaMP Ca2+ imaging of intact trigeminal ganglion neurons. Pain 2024:00006396-990000000-00724. [PMID: 39365648 DOI: 10.1097/j.pain.0000000000003421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 05/09/2024] [Indexed: 10/05/2024]
Abstract
ABSTRACT Patients with temporomandibular disorders (TMDs) typically experience facial pain and discomfort or tenderness in the temporomandibular joint (TMJ), causing disability in daily life. Unfortunately, existing treatments for TMD are not always effective, creating a need for more advanced, mechanism-based therapies. In this study, we used in vivo GCaMP3 Ca2+ imaging of intact trigeminal ganglia (TG) to characterize functional activity of the TG neurons in vivo, specifically in mouse models of TMJ injury and inflammation. This system allows us to observe neuronal activity in intact anatomical, physiological, and clinical conditions and to assess neuronal function and response to various stimuli. We observed a significant increase in spontaneously and transiently activated neurons responding to mechanical, thermal, and chemical stimuli in the TG of mice with TMJ injection of complete Freund adjuvant or with forced mouth opening (FMO). An inhibitor of the calcitonin gene-related peptide receptor significantly attenuated FMO-induced facial hypersensitivity. In addition, we confirmed the attenuating effect of calcitonin gene-related peptide antagonist on FMO-induced sensitization by in vivo GCaMP3 Ca2+ imaging of intact TG. Our results contribute to unraveling the role and activity of TG neurons in the TMJ pain, bringing us closer to understanding the pathophysiological processes underlying TMJ pain after TMJ injury. Our study also illustrates the utility of in vivo GCaMP3 Ca2+ imaging of intact TG for studies aimed at developing more targeted and effective treatments for TMJ pain.
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Affiliation(s)
- Hyeonwi Son
- Department of Oral & Maxillofacial Surgery, School of Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States
| | - John Shannonhouse
- Department of Oral & Maxillofacial Surgery, School of Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States
| | - Yan Zhang
- Department of Oral & Maxillofacial Surgery, School of Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States
| | - Ruben Gomez
- Department of Oral & Maxillofacial Surgery, School of Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States
| | - Felix Amarista
- Department of Oral & Maxillofacial Surgery, School of Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States
| | - Daniel Perez
- Department of Oral & Maxillofacial Surgery, School of Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States
| | - Edward Ellis
- Department of Oral & Maxillofacial Surgery, School of Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States
| | - Man-Kyo Chung
- Department of Neural and Pain Sciences, School of Dentistry, Program in Neuroscience, Center to Advance Chronic Pain Research, University of Maryland at Baltimore, Baltimore, MD, United States
| | - Yu Shin Kim
- Department of Oral & Maxillofacial Surgery, School of Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States
- Programs in Integrated Biomedical Sciences, Translational Sciences, Biomedical Engineering, Radiological Sciences, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States
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16
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Oweidat A, Kalagara H, Sondekoppam RV. Current concepts and targets for preventing the transition of acute to chronic postsurgical pain. Curr Opin Anaesthesiol 2024; 37:588-596. [PMID: 39087396 DOI: 10.1097/aco.0000000000001424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2024]
Abstract
PURPOSE OF REVIEW It is estimated that approximately a third of patients undergoing certain surgeries may report some degree of persistent pain postoperatively. Chronic postsurgical pain (CPSP) reduces quality of life, is challenging to treat, and has significant socio-economic impact. RECENT FINDINGS From an epidemiological perspective, factors that predispose patients to the development of CPSP may be considered in relation to the patient, the procedure or, the care environment. Prevention or management of transition from acute to chronic pain often need a multidisciplinary approach beginning early in the preoperative period and continuing beyond surgical admission. The current concepts regarding the role of central and peripheral nervous systems in chronification of pain may provide targets for future therapies but, the current evidence seems to suggest that a multimodal analgesic approach of preventive analgesia along with a continued follow-up and treatment after hospital discharge may hold the key to identify and manage the transitioning of acute to chronic pain. SUMMARY A comprehensive multidisciplinary approach with prior identification of risk factors, minimizing the surgical insult and a culture of utilizing multimodal analgesia and continued surveillance beyond the period of hospitalization is an important step towards reducing the development of chronic pain. A transitional pain service model may accomplish many of these goals.
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Affiliation(s)
- Adeeb Oweidat
- Department of Anesthesia, University of Iowa Healthcare, Iowa City, Iowa
| | - Hari Kalagara
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Jacksonville, Florida, USA
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17
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Chiu IM, Sokol CL. Neuroimmune recognition of allergens. Curr Opin Immunol 2024; 90:102458. [PMID: 39213825 PMCID: PMC11423315 DOI: 10.1016/j.coi.2024.102458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 08/07/2024] [Accepted: 08/16/2024] [Indexed: 09/04/2024]
Abstract
Interactions between the nervous system and the immune system play crucial roles in initiating and directing the type 2 immune response. Sensory neurons can initiate innate and adaptive type 2 immunity through their ability to detect allergens and promote dendritic cell and mast cell responses. Neurons also indirectly promote type 2 inflammation through suppression of type 1 immune responses. Type 2 cytokines promote neuronal function by directly activating or sensitizing neurons. This positive neuroimmune feedback loop may not only enhance allergic inflammation but also promote the system-wide responses of aversion, anaphylaxis, and allergen polysensitization that are characteristic of allergic immunity.
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Affiliation(s)
- Isaac M Chiu
- Department of Immunology, Blavatnik Institute, Harvard Medical School, Boston, MA 02115, USA.
| | - Caroline L Sokol
- Center for Immunology & Inflammatory Diseases, Division of Rheumatology, Allergy & Immunology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA.
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18
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Lee SH, Bonifacio F, Prudente AS, Choi YI, Roh J, Adjafre BL, Park CK, Jung SJ, Cunha TM, Berta T. STING recognition of viral dsDNA by nociceptors mediates pain in mice. Brain Behav Immun 2024; 121:29-42. [PMID: 39025416 DOI: 10.1016/j.bbi.2024.07.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 07/05/2024] [Accepted: 07/15/2024] [Indexed: 07/20/2024] Open
Abstract
Pain is often one of the initial indicators of a viral infection, yet our understanding of how viruses induce pain is limited. Immune cells typically recognize viral nucleic acids, which activate viral receptors and signaling, leading to immunity. Interestingly, these viral receptors and signals are also present in nociceptors and are associated with pain. Here, we investigate the response of nociceptors to nucleic acids during viral infections, specifically focusing on the role of the viral signal, Stimulator of Interferon Genes (STING). Our research shows that cytosolic double-stranded DNA (dsDNA) from viruses, like herpes simplex virus 1 (HSV-1), triggers pain responses through STING expression in nociceptors. In addition, STING agonists alone can elicit pain responses. Notably, these responses involve the direct activation of STING in nociceptors through TRPV1. We also provided a proof-of-concept showing that STING and TRPV1 significantly contribute to the mechanical hypersensitivity induced by HSV-1 infection. These findings suggest that STING could be a potential therapeutic target for relieving pain during viral infections.
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Affiliation(s)
- Sang Hoon Lee
- Pain Research Center, Department of Anesthesiology, University of Cincinnati Medical Center, Cincinnati, OH, United States
| | - Fabio Bonifacio
- Center for Research in Inflammatory Diseases, Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Arthur Silveira Prudente
- Pain Research Center, Department of Anesthesiology, University of Cincinnati Medical Center, Cincinnati, OH, United States
| | - Y I Choi
- Department of Physiology, Medical School, Hanyang University, Seoul, South Korea
| | - Jueun Roh
- Pain Research Center, Department of Anesthesiology, University of Cincinnati Medical Center, Cincinnati, OH, United States; Gachon Pain Center and Department of Physiology, College of Medicine, Gachon University, Incheon, South Korea
| | - Beatriz Lima Adjafre
- Pain Research Center, Department of Anesthesiology, University of Cincinnati Medical Center, Cincinnati, OH, United States; Center for Research in Inflammatory Diseases, Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Chul-Kyu Park
- Gachon Pain Center and Department of Physiology, College of Medicine, Gachon University, Incheon, South Korea
| | - Sung Jun Jung
- Department of Physiology, Medical School, Hanyang University, Seoul, South Korea
| | - Thiago M Cunha
- Center for Research in Inflammatory Diseases, Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.
| | - Temugin Berta
- Pain Research Center, Department of Anesthesiology, University of Cincinnati Medical Center, Cincinnati, OH, United States.
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19
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Zhao Y, Zhang Z, Gou D, Li P, Yang T, Niu Z, Simon JP, Guan X, Li X, He C, Dong S. Intrathecal administration of MCRT produced potent antinociception in chronic inflammatory pain models via μ-δ heterodimer with limited side effects. Biomed Pharmacother 2024; 179:117389. [PMID: 39243426 DOI: 10.1016/j.biopha.2024.117389] [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: 07/10/2024] [Revised: 08/25/2024] [Accepted: 08/30/2024] [Indexed: 09/09/2024] Open
Abstract
An important goal in the opioid field is to discover effective analgesic drugs with minimal side effects. MCRT demonstrated potent antinociceptive effects with limited side effects, making it a promising candidate. However, its pharmacological properties and how it minimizes side effects remain unknown. Various mouse pain and opioid side effect models were used to evaluate the antinociceptive properties and safety at the spinal level. The targets of MCRT were identified through cAMP measurement, isolated tissue assays, and pharmacological experiments. Immunofluorescence was employed to visualize protein expression. MCRT displayed distinct antinociceptive effects between acute and chronic inflammatory pain models due to its multifunctional properties at the μ opioid receptor (MOR), µ-δ heterodimer (MDOR), and neuropeptide FF receptor 2 (NPFFR2). Activation of NPFFR2 reduced MOR-mediated antinociception, leading to bell-shaped response curves in acute pain models. However, activation of MDOR produced more effective antinociception in chronic inflammatory pain models. MCRT showed limited tolerance and opioid-induced hyperalgesia in both acute and chronic pain models and did not develop cross-tolerance to morphine. Additionally, MCRT did not exhibit addictive properties, gastrointestinal inhibition, and effects on motor coordination. Mechanistically, peripheral chronic inflammation or repeated administration of morphine and MCRT induced an increase in MDOR in the spinal cord. Chronic administration of MCRT had no apparent effect on microglial activation in the spinal cord. These findings suggest that MCRT is a versatile compound that provides potent antinociception with minimal opioid-related side effects. MDOR could be a promising target for managing chronic inflammatory pain and addressing the opioid crisis.
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MESH Headings
- Animals
- Injections, Spinal
- Chronic Pain/drug therapy
- Receptors, Opioid, mu/metabolism
- Mice
- Male
- Inflammation/drug therapy
- Analgesics, Opioid/administration & dosage
- Analgesics, Opioid/adverse effects
- Analgesics, Opioid/pharmacology
- Disease Models, Animal
- Receptors, Neuropeptide/metabolism
- Receptors, Neuropeptide/antagonists & inhibitors
- Receptors, Opioid, delta/metabolism
- Mice, Inbred C57BL
- Analgesics/pharmacology
- Analgesics/administration & dosage
- Morphine/administration & dosage
- Morphine/pharmacology
- Spinal Cord/drug effects
- Spinal Cord/metabolism
- Hyperalgesia/drug therapy
- Humans
- Oligopeptides/administration & dosage
- Oligopeptides/pharmacology
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Affiliation(s)
- Yaofeng Zhao
- Department of Animal and Biomedical Sciences, School of Life Sciences, Lanzhou University, 222 Tianshui South Road, Lanzhou 730000, China
| | - Zhonghua Zhang
- Department of Animal and Biomedical Sciences, School of Life Sciences, Lanzhou University, 222 Tianshui South Road, Lanzhou 730000, China
| | - Dingnian Gou
- Department of Animal and Biomedical Sciences, School of Life Sciences, Lanzhou University, 222 Tianshui South Road, Lanzhou 730000, China
| | - Pengtao Li
- Department of Animal and Biomedical Sciences, School of Life Sciences, Lanzhou University, 222 Tianshui South Road, Lanzhou 730000, China
| | - Tong Yang
- Department of Animal and Biomedical Sciences, School of Life Sciences, Lanzhou University, 222 Tianshui South Road, Lanzhou 730000, China
| | - Zhanyu Niu
- Department of Animal and Biomedical Sciences, School of Life Sciences, Lanzhou University, 222 Tianshui South Road, Lanzhou 730000, China
| | - Jerine Peter Simon
- Department of Animal and Biomedical Sciences, School of Life Sciences, Lanzhou University, 222 Tianshui South Road, Lanzhou 730000, China
| | - Xuyan Guan
- Cuiying Honors College, Lanzhou University, 222 Tianshui South Road, Lanzhou 730000, China
| | - Xinyu Li
- Cuiying Honors College, Lanzhou University, 222 Tianshui South Road, Lanzhou 730000, China
| | - Chunbo He
- Department of Animal and Biomedical Sciences, School of Life Sciences, Lanzhou University, 222 Tianshui South Road, Lanzhou 730000, China
| | - Shouliang Dong
- Department of Animal and Biomedical Sciences, School of Life Sciences, Lanzhou University, 222 Tianshui South Road, Lanzhou 730000, China; Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, 222 Tianshui South Road, Lanzhou 730000, China.
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20
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Li G, Wang X, Wang Q, Han L, Bai J, Wang F, Yu B, Liu Z, Long X, Cheng Y. Coumarins rather than alkylamides evoke the numbing orosensation of pomelo peel. Food Chem 2024; 463:141502. [PMID: 39368197 DOI: 10.1016/j.foodchem.2024.141502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2024] [Revised: 09/20/2024] [Accepted: 09/29/2024] [Indexed: 10/07/2024]
Abstract
Liangpingyou, a well-known Chinese pomelo (Citrus grandis L.) variety, elicits a unique and uncharacterized numbing aftertaste. To understand the molecular bases and characteristics of the pomelo-induced numbing sensation, we first determined that hydroxyl sanshools, the major Sichuan pepper chemosensates, were not responsible via silylation-GC-MS analysis. Pomelo peel juice was then subjected to solid-phase extraction to form 4 fractions, and key sensory-active substances were screened via taste dilution analysis. Three simple coumarins, meranzin hydrate, isomeranzin, and marmin, were identified to induce numbing, which has not been previously reported. Sensory studies via extensively modified half-tongue tests and verification steps revealed recognition thresholds within 0.49-1.78, 0.32-1.56, and 0.43-1.46 μmol/L for numbness, pungency, and astringency, respectively. The temporal dominance trends showed the following taste notes: Meranzin hydrate-numbing dominated, isomeranzin-numbing and pungent, and marmin-astringent and numbing. Molecular docking analysis suggested that coumarins target the receptors TRPV1, TPRA1, and KCNK3.
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Affiliation(s)
- Guijie Li
- Citrus Research Institute, Southwest University, Chongqing, 400712, China; National Citrus Engineering Research Center, Chongqing, 400712, China.
| | - Xuting Wang
- Citrus Research Institute, Southwest University, Chongqing, 400712, China
| | - Qundi Wang
- Citrus Research Institute, Southwest University, Chongqing, 400712, China.
| | - Leng Han
- Citrus Research Institute, Southwest University, Chongqing, 400712, China; National Citrus Engineering Research Center, Chongqing, 400712, China.
| | - Junying Bai
- Citrus Research Institute, Southwest University, Chongqing, 400712, China; National Citrus Engineering Research Center, Chongqing, 400712, China.
| | - Fusheng Wang
- Citrus Research Institute, Southwest University, Chongqing, 400712, China; National Citrus Engineering Research Center, Chongqing, 400712, China.
| | - Bo Yu
- Sichuan Dan Orange Modern Fruit Industry Co., Ltd, Danling, 620200, China
| | - Zhaojun Liu
- Chongqing Liangping District Agriculture and Rural Committee, Chongqing, 405200, China
| | - Xingyao Long
- Collaborative Innovation Center for Child Nutrition and Health Development, Chongqing University of Education, Chongqing, 400067, China.
| | - Yujiao Cheng
- Citrus Research Institute, Southwest University, Chongqing, 400712, China; National Citrus Engineering Research Center, Chongqing, 400712, China.
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21
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Sun ZC, Han WJ, Dou ZW, Lu N, Wang X, Wang FD, Ma SB, Tian ZC, Xian H, Liu WN, Liu YY, Wu WB, Chu WG, Guo H, Wang F, Ding H, Liu YY, Tao HR, Freichel M, Birnbaumer L, Li ZZ, Xie RG, Wu SX, Luo C. TRPC3/6 Channels Mediate Mechanical Pain Hypersensitivity via Enhancement of Nociceptor Excitability and of Spinal Synaptic Transmission. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2404342. [PMID: 39340833 DOI: 10.1002/advs.202404342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Revised: 09/11/2024] [Indexed: 09/30/2024]
Abstract
Patients with tissue inflammation or injury often experience aberrant mechanical pain hypersensitivity, one of leading symptoms in clinic. Despite this, the molecular mechanisms underlying mechanical distortion are poorly understood. Canonical transient receptor potential (TRPC) channels confer sensitivity to mechanical stimulation. TRPC3 and TRPC6 proteins, coassembling as heterotetrameric channels, are highly expressed in sensory neurons. However, how these channels mediate mechanical pain hypersensitivity has remained elusive. It is shown that in mice and human, TRPC3 and TRPC6 are upregulated in DRG and spinal dorsal horn under pathological states. Double knockout of TRPC3/6 blunts mechanical pain hypersensitivity, largely by decreasing nociceptor hyperexcitability and spinal synaptic potentiation via presynaptic mechanism. In corroboration with this, nociceptor-specific ablation of TRPC3/6 produces comparable pain relief. Mechanistic analysis reveals that upon peripheral inflammation, TRPC3/6 in primary sensory neurons get recruited via released bradykinin acting on B1/B2 receptors, facilitating BDNF secretion from spinal nociceptor terminals, which in turn potentiates synaptic transmission through TRPC3/6 and eventually results in mechanical pain hypersensitivity. Antagonizing TRPC3/6 in DRG relieves mechanical pain hypersensitivity in mice and nociceptor hyperexcitability in human. Thus, TRPC3/6 in nociceptors is crucially involved in pain plasticity and constitutes a promising therapeutic target against mechanical pain hypersensitivity with minor side effects.
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Affiliation(s)
- Zhi-Chuan Sun
- Department of Neurobiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, China
- Department of Neurosurgery, Xi'an Daxing Hospital, Xi'an, 710016, China
| | - Wen-Juan Han
- Department of Neurobiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, China
| | - Zhi-Wei Dou
- Department of Neurobiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, China
| | - Na Lu
- Department of Neurobiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, China
- The Assisted Reproduction Center, Northwest Women and Children's Hospital, Xi'an, 710000, China
| | - Xu Wang
- Department of Neurobiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, China
| | - Fu-Dong Wang
- Department of Neurobiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, China
| | - Sui-Bin Ma
- Department of Neurobiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, China
| | - Zhi-Cheng Tian
- Department of Neurobiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, China
| | - Hang Xian
- Department of Neurobiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, China
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Wan-Neng Liu
- Department of Neurobiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, China
| | - Ying-Ying Liu
- Department of Neurobiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, China
| | - Wen-Bin Wu
- Department of Neurobiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, China
| | - Wen-Guang Chu
- Department of Neurobiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, China
| | - Huan Guo
- Department of Neurobiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, China
| | - Fei Wang
- Department of Neurobiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, China
| | - Hui Ding
- Department of Neurobiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, China
| | - Yuan-Ying Liu
- Department of Neurobiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, China
| | - Hui-Ren Tao
- Department of Orthopedic Surgery, The University of Hong Kong-Shenzhen Hospital, Shenzhen, Guangdong, 518053, China
| | - Marc Freichel
- Institute of Pharmacology, Heidelberg University, 69120, Heidelberg, Germany
| | - Lutz Birnbaumer
- Institute of Biomedical Research (BIOMED), Catholic University of Argentina, Buenos Aires, C1107AVV, Argentina
- Signal Transduction Laboratory, National institute of Environmental Health Sciences, Research Triangle Park, NC, 27709, United States
| | - Zhen-Zhen Li
- Department of Neurobiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, China
| | - Rou-Gang Xie
- Department of Neurobiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, China
| | - Sheng-Xi Wu
- Department of Neurobiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, China
| | - Ceng Luo
- Department of Neurobiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, China
- Innovation Research Institute, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
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22
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Raveh A, Pen Y, Silberman A, Peretz A, Attali B, Maile L, Davidson S, Brown AD, Kennedy JD, Belinson H. Dual Kv7.2/3-TRPV1 modulators inhibit nociceptor hyperexcitability and alleviate pain without target-related side effects. Pain 2024:00006396-990000000-00714. [PMID: 39324934 DOI: 10.1097/j.pain.0000000000003390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Accepted: 08/04/2024] [Indexed: 09/27/2024]
Abstract
ABSTRACT Persistent or chronic pain is the primary reason people seek medical care, yet current therapies are either limited in efficacy or cause intolerable side effects. Diverse mechanisms contribute to the basic phenomena of nociceptor hyperexcitability that initiates and maintains pain. Two prominent players in the modulation of nociceptor hyperexcitability are the transient receptor potential vanilloid type 1 (TRPV1) ligand-gated ion channel and the voltage-gated potassium channel, Kv7.2/3, that reciprocally regulate neuronal excitability. Across many drug development programs targeting either TRPV1 or Kv7.2/3, significant evidence has been accumulated to support these as highly relevant targets; however, side effects that are poorly separated from efficacy have limited the successful clinical translation of numerous Kv7.2/3 and TRPV1 drug development programs. We report here the pharmacological profile of 3 structurally related small molecule analogues that demonstrate a novel mechanism of action (MOA) of dual modulation of Kv7.2/3 and TRPV1. Specifically, these compounds simultaneously activate Kv7.2/3 and enable unexpected specific and potent inhibition of TRPV1. This in vitro potency translated to significant analgesia in vivo in several animal models of acute and chronic pain. Importantly, this specific MOA is not associated with any previously described Kv7.2/3 or TRPV1 class-specific side effects. We suggest that the therapeutic potential of this MOA is derived from the selective and specific targeting of a subpopulation of nociceptors found in rodents and humans. This efficacy and safety profile supports the advancement of dual TRPV1-Kv7.2/3 modulating compounds into preclinical and clinical development for the treatment of chronic pain.
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Affiliation(s)
- Adi Raveh
- Bsense Bio Therapeutics Ltd., Ness Ziona, Israel
| | - Yefim Pen
- Bsense Bio Therapeutics Ltd., Ness Ziona, Israel
| | | | - Asher Peretz
- Department of Physiology and Pharmacology, Sackler Faculty of Medicine, Sagol School of Neuroscience, Tel-Aviv University, Tel Aviv, Israel
| | - Bernard Attali
- Department of Physiology and Pharmacology, Sackler Faculty of Medicine, Sagol School of Neuroscience, Tel-Aviv University, Tel Aviv, Israel
| | - Laura Maile
- Department of Anesthesiology and Neuroscience Graduate Program, College of Medicine, University of Cincinnati, Cincinnati, OH, United States
| | - Steve Davidson
- Department of Anesthesiology and Neuroscience Graduate Program, College of Medicine, University of Cincinnati, Cincinnati, OH, United States
| | - Alan D Brown
- AD Brown Medchem Consulting Ltd., Deal, Kent, UK
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23
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Li J, Bai Y, Ge J, Zhang Y, Zhao Q, Li D, Guo B, Gao S, Zhu Y, Cai G, Wan X, Huang J, Wu S. Cell Type-Specific Modulation of Acute Itch Processing in the Anterior Cingulate Cortex. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2403445. [PMID: 39316379 DOI: 10.1002/advs.202403445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2024] [Revised: 07/24/2024] [Indexed: 09/25/2024]
Abstract
Despite remarkable progress in understanding the fundamental bases of itching, its cortical mechanisms remain poorly understood. Herein, the causal contributions of defined anterior cingulate cortex (ACC) neuronal populations to acute itch modulation in mice are established. Using cell type-specific manipulations, the opposing functions of ACC glutamatergic and GABAergic neurons in regulating acute itching are demonstrated. Photometry studies indicated that ACC glutamatergic neurons are activated during scratching induced by both histamine and chloroquine, whereas the activation pattern of GABAergic neurons is complicated by GABAergic subpopulations and acute itch modalities. By combining cell type- and projection-specific techniques, a thalamocortical circuit is further identified from the mediodorsal thalamus driving the itch-scratching cycle related to histaminergic and non-histaminergic itching, which is contingent on the activation of postsynaptic parvalbumin-expressing neurons in the ACC. These findings reveal a cellular and circuit signature of ACC neurons orchestrating behavioral responses to itching and may provide insights into therapies for itch-related diseases.
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Affiliation(s)
- Jiaqi Li
- Department of Neurobiology, Basic Medical Science Academy, Fourth Military Medical University, Xi'an, 710032, China
- School of Life Science and Technology, ShanghaiTech University, Shanghai, 201210, China
| | - Yang Bai
- Department of Neurosurgery, General Hospital of Northern Theater Command, Shenyang, 110015, China
| | - Junye Ge
- Department of Neurobiology, Basic Medical Science Academy, Fourth Military Medical University, Xi'an, 710032, China
| | - Yiwen Zhang
- Department of Neurobiology, Basic Medical Science Academy, Fourth Military Medical University, Xi'an, 710032, China
| | - Qiuying Zhao
- Department of Neurobiology, Basic Medical Science Academy, Fourth Military Medical University, Xi'an, 710032, China
| | - Dangchao Li
- Department of Neurobiology, Basic Medical Science Academy, Fourth Military Medical University, Xi'an, 710032, China
| | - Baolin Guo
- Department of Neurobiology, Basic Medical Science Academy, Fourth Military Medical University, Xi'an, 710032, China
| | - Shasha Gao
- Department of Neurobiology, Basic Medical Science Academy, Fourth Military Medical University, Xi'an, 710032, China
| | - Yuanyuan Zhu
- Department of Neurobiology, Basic Medical Science Academy, Fourth Military Medical University, Xi'an, 710032, China
| | - Guohong Cai
- Department of Neurobiology, Basic Medical Science Academy, Fourth Military Medical University, Xi'an, 710032, China
| | - Xiangdong Wan
- Department of Neurobiology, Basic Medical Science Academy, Fourth Military Medical University, Xi'an, 710032, China
| | - Jing Huang
- Department of Neurobiology, Basic Medical Science Academy, Fourth Military Medical University, Xi'an, 710032, China
| | - Shengxi Wu
- Department of Neurobiology, Basic Medical Science Academy, Fourth Military Medical University, Xi'an, 710032, China
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24
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Breault É, Desgagné M, Neve JD, Côté J, Barlow TMA, Ballet S, Sarret P. Multitarget ligands that comprise opioid/nonopioid pharmacophores for pain management: Current state of the science. Pharmacol Res 2024; 209:107408. [PMID: 39307212 DOI: 10.1016/j.phrs.2024.107408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2024] [Revised: 08/26/2024] [Accepted: 09/10/2024] [Indexed: 10/05/2024]
Abstract
Chronic pain, which affects more than one-third of the world's population, represents one of the greatest medical challenges of the 21st century, yet its effective management remains sub-optimal. The 'gold standard' for the treatment of moderate to severe pain consists of opioid ligands, such as morphine and fentanyl, that target the µ-opioid receptor (MOP). Paradoxically, these opioids also cause serious side effects, including constipation, respiratory depression, tolerance, and addiction. In addition, the development of opioid-use disorders, such as opioid diversion, misuse, and abuse, has led to the current opioid crisis, with dramatic increases in addiction, overdoses, and ultimately deaths. As pain is a complex, multidimensional experience involving a variety of pathways and mediators, dual or multitarget ligands that can bind to more than one receptor and exert complementary analgesic effects, represent a promising avenue for pain relief. Indeed, unlike monomodal therapeutic approaches, the modulation of several endogenous nociceptive systems can often result in an additive or even synergistic effect, thereby improving the analgesic-to-side-effect ratio. Here, we provide a comprehensive overview of research efforts towards the development of dual- or multi-targeting opioid/nonopioid hybrid ligands for effective and safer pain management. We reflect on the underpinning discovery rationale by discussing the design, medicinal chemistry, and in vivo pharmacological effects of multitarget antinociceptive compounds.
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Affiliation(s)
- Émile Breault
- Institut de Pharmacologie de Sherbrooke, Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, 3001, 12e avenue Nord, Sherbrooke, QC J1H 5N4, Canada
| | - Michael Desgagné
- Institut de Pharmacologie de Sherbrooke, Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, 3001, 12e avenue Nord, Sherbrooke, QC J1H 5N4, Canada
| | - Jolien De Neve
- Research Group of Organic Chemistry, Departments of Chemistry and Bioengineering Sciences, Vrije Universiteit Brussel, Pleinlaan 2, Brussels 1050, Belgium
| | - Jérôme Côté
- Institut de Pharmacologie de Sherbrooke, Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, 3001, 12e avenue Nord, Sherbrooke, QC J1H 5N4, Canada
| | - Thomas M A Barlow
- Research Group of Organic Chemistry, Departments of Chemistry and Bioengineering Sciences, Vrije Universiteit Brussel, Pleinlaan 2, Brussels 1050, Belgium
| | - Steven Ballet
- Research Group of Organic Chemistry, Departments of Chemistry and Bioengineering Sciences, Vrije Universiteit Brussel, Pleinlaan 2, Brussels 1050, Belgium
| | - Philippe Sarret
- Institut de Pharmacologie de Sherbrooke, Department of Pharmacology and Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, 3001, 12e avenue Nord, Sherbrooke, QC J1H 5N4, Canada.
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25
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Yang T, Liu X, Cao R, Zhou X, Li W, Wu W, Yu W, Zhang X, Guo Z, Cui S. Establishment of a Magnetically Controlled Scalable Nerve Injury Model. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2405265. [PMID: 39287118 DOI: 10.1002/advs.202405265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2024] [Revised: 08/21/2024] [Indexed: 09/19/2024]
Abstract
Animal models of peripheral nerve injury (PNI) serve as the fundamental basis for the investigations of nerve injury, regeneration, and neuropathic pain. The injury properties of such models, including the intensity and duration, significantly influence the subsequent pathological changes, pain development, and therapeutic efficacy. However, precise control over the intensity and duration of nerve injury remains challenging within existing animal models, thereby impeding accurate and comparative assessments of relevant cases. Here, a new model that provides quantitative and off-body controllable injury properties via a magnetically controlled clamp, is presented. The clamp can be implanted onto the rat sciatic nerve and exert varying degrees of compression under the control of an external magnetic field. It is demonstrated that this model can accurately simulate various degrees of pathology of human patients by adjusting the magnetic control and reveal specific pathological changes resulting from intensity heterogeneity that are challenging to detect previously. The controllability and quantifiability of this model may significantly reduce the uncertainty of central response and inter-experimenter variability, facilitating precise investigations into nerve injury, regeneration, and pain mechanisms.
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Affiliation(s)
- Tuo Yang
- Department of Hand and Foot Surgery, China-Japan Union Hospital of Jilin University, No.126, Xiantai Street, Changchun, 130033, China
- Key Laboratory of Peripheral Nerve Injury and Regeneration of Jilin Province, No.126, Xiantai Street, Changchun, 130033, China
| | - Xilin Liu
- Department of Hand and Foot Surgery, China-Japan Union Hospital of Jilin University, No.126, Xiantai Street, Changchun, 130033, China
- Key Laboratory of Peripheral Nerve Injury and Regeneration of Jilin Province, No.126, Xiantai Street, Changchun, 130033, China
| | - Rangjuan Cao
- Department of Hand and Foot Surgery, China-Japan Union Hospital of Jilin University, No.126, Xiantai Street, Changchun, 130033, China
- Key Laboratory of Peripheral Nerve Injury and Regeneration of Jilin Province, No.126, Xiantai Street, Changchun, 130033, China
| | - Xiongyao Zhou
- Department of Hand and Foot Surgery, China-Japan Union Hospital of Jilin University, No.126, Xiantai Street, Changchun, 130033, China
- Key Laboratory of Peripheral Nerve Injury and Regeneration of Jilin Province, No.126, Xiantai Street, Changchun, 130033, China
| | - Weizhen Li
- Department of Hand and Foot Surgery, China-Japan Union Hospital of Jilin University, No.126, Xiantai Street, Changchun, 130033, China
- Key Laboratory of Peripheral Nerve Injury and Regeneration of Jilin Province, No.126, Xiantai Street, Changchun, 130033, China
| | - Wenzheng Wu
- School of Mechanical and Aerospace Engineering of Jilin University, 5988 Renmin Street, Changchun, 130025, China
| | - Wei Yu
- Department of Wound Repair, Plastic and Reconstructive Microsurgery, China-Japan Union Hospital of Jilin University, No.126, Xiantai Street, Changchun, 130033, China
| | - Xianyu Zhang
- Department of Hand and Foot Surgery, China-Japan Union Hospital of Jilin University, No.126, Xiantai Street, Changchun, 130033, China
| | - Zhengxiao Guo
- Department of Chemistry, The University of Hong Kong, Hong Kong, 999077, China
| | - Shusen Cui
- Department of Hand and Foot Surgery, China-Japan Union Hospital of Jilin University, No.126, Xiantai Street, Changchun, 130033, China
- Key Laboratory of Peripheral Nerve Injury and Regeneration of Jilin Province, No.126, Xiantai Street, Changchun, 130033, China
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26
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Hu N, Liu J, Luo Y, Li Y. A comprehensive review of traditional Chinese medicine in treating neuropathic pain. Heliyon 2024; 10:e37350. [PMID: 39296122 PMCID: PMC11407996 DOI: 10.1016/j.heliyon.2024.e37350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 08/28/2024] [Accepted: 09/02/2024] [Indexed: 09/21/2024] Open
Abstract
Neuropathic pain (NP) is a common, intractable chronic pain caused by nerve dysfunction and primary lesion of the nervous system. The etiology and pathogenesis of NP have not yet been clarified, so there is a lack of precise and effective clinical treatments. In recent years, traditional Chinese medicine (TCM) has shown increasing advantages in alleviating NP. Our review aimed to define the therapeutic effect of TCM (including TCM prescriptions, TCM extracts and natural products from TCM) on NP and reveal the underlying mechanisms. Literature from 2018 to 2024 was collected from databases including Web of Science, PubMed, ScienceDirect, Google academic and CNKI databases. Herbal medicine, Traditional Chinese medicines (TCM), neuropathic pain, neuralgia and peripheral neuropathy were used as the search terms. The anti-NP activity of TCM is clarified to propose strategies for discovering active compounds against NP, and provide reference to screen anti-NP drugs from TCM. We concluded that TCM has the characteristics of multi-level, multi-component, multi-target and multi-pathway, which can alleviate NP through various pathways such as anti-inflammation, anti-oxidant, anti-apoptotic pathway, regulating autophagy, regulating intestinal flora, and influencing ion channels. Based on the experimental study and anti-NP mechanism of TCM, this paper can offer analytical evidence to support the effectiveness in treating NP. These references will be helpful to the research and development of innovative TCM with multiple levels and multiple targets. TCM can be an effective treatment for NP and can serve as a treasure house for new drug development.
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Affiliation(s)
- Naihua Hu
- Deyang Hospital of Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, No. 159, Section 2, Tianshan South Road, Deyang, 618000, Sichuan, China
| | - Jie Liu
- Deyang Hospital of Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, No. 159, Section 2, Tianshan South Road, Deyang, 618000, Sichuan, China
| | - Yong Luo
- Deyang Hospital of Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, No. 159, Section 2, Tianshan South Road, Deyang, 618000, Sichuan, China
| | - Yunxia Li
- Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
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27
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Kim J, Gim S, Yoo SBM, Woo CW. A computational mechanism of cue-stimulus integration for pain in the brain. SCIENCE ADVANCES 2024; 10:eado8230. [PMID: 39259795 PMCID: PMC11389792 DOI: 10.1126/sciadv.ado8230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Accepted: 08/02/2024] [Indexed: 09/13/2024]
Abstract
The brain integrates information from pain-predictive cues and noxious inputs to construct the pain experience. Although previous studies have identified neural encodings of individual pain components, how they are integrated remains elusive. Here, using a cue-induced pain task, we examined temporal functional magnetic resonance imaging activities within the state space, where axes represent individual voxel activities. By analyzing the features of these activities at the large-scale network level, we demonstrated that overall brain networks preserve both cue and stimulus information in their respective subspaces within the state space. However, only higher-order brain networks, including limbic and default mode networks, could reconstruct the pattern of participants' reported pain by linear summation of subspace activities, providing evidence for the integration of cue and stimulus information. These results suggest a hierarchical organization of the brain for processing pain components and elucidate the mechanism for their integration underlying our pain perception.
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Affiliation(s)
- Jungwoo Kim
- Center for Neuroscience Imaging Research, Institute for Basic Science, Suwon, South Korea
- Department of Biomedical Engineering, Sungkyunkwan University, Suwon, South Korea
- Department of Intelligent Precision Healthcare Convergence, Sungkyunkwan University, Suwon, South Korea
| | - Suhwan Gim
- Center for Neuroscience Imaging Research, Institute for Basic Science, Suwon, South Korea
- Department of Biomedical Engineering, Sungkyunkwan University, Suwon, South Korea
- Department of Intelligent Precision Healthcare Convergence, Sungkyunkwan University, Suwon, South Korea
| | - Seng Bum Michael Yoo
- Center for Neuroscience Imaging Research, Institute for Basic Science, Suwon, South Korea
- Department of Biomedical Engineering, Sungkyunkwan University, Suwon, South Korea
- Department of Intelligent Precision Healthcare Convergence, Sungkyunkwan University, Suwon, South Korea
- Department of Neurosurgery and McNair Scholar Program, Baylor College of Medicine, Houston, TX 77030, USA
| | - Choong-Wan Woo
- Center for Neuroscience Imaging Research, Institute for Basic Science, Suwon, South Korea
- Department of Biomedical Engineering, Sungkyunkwan University, Suwon, South Korea
- Department of Intelligent Precision Healthcare Convergence, Sungkyunkwan University, Suwon, South Korea
- Life-inspired Neural Network for Prediction and Optimization Research Group, Suwon, South Korea
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28
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Xing Y, Yang K, Lu A, Mackie K, Guo F. Sensors and Devices Guided by Artificial Intelligence for Personalized Pain Medicine. CYBORG AND BIONIC SYSTEMS 2024; 5:0160. [PMID: 39282019 PMCID: PMC11395709 DOI: 10.34133/cbsystems.0160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2024] [Revised: 08/01/2024] [Accepted: 08/14/2024] [Indexed: 09/18/2024] Open
Abstract
Personalized pain medicine aims to tailor pain treatment strategies for the specific needs and characteristics of an individual patient, holding the potential for improving treatment outcomes, reducing side effects, and enhancing patient satisfaction. Despite existing pain markers and treatments, challenges remain in understanding, detecting, and treating complex pain conditions. Here, we review recent engineering efforts in developing various sensors and devices for addressing challenges in the personalized treatment of pain. We summarize the basics of pain pathology and introduce various sensors and devices for pain monitoring, assessment, and relief. We also discuss advancements taking advantage of rapidly developing medical artificial intelligence (AI), such as AI-based analgesia devices, wearable sensors, and healthcare systems. We believe that these innovative technologies may lead to more precise and responsive personalized medicine, greatly improved patient quality of life, increased efficiency of medical systems, and reducing the incidence of addiction and substance use disorders.
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Affiliation(s)
- Yantao Xing
- Department of Intelligent Systems Engineering, Indiana University Bloomington, Bloomington, IN 47405, USA
| | - Kaiyuan Yang
- Department of Intelligent Systems Engineering, Indiana University Bloomington, Bloomington, IN 47405, USA
| | - Albert Lu
- Department of Intelligent Systems Engineering, Indiana University Bloomington, Bloomington, IN 47405, USA
- Culver Academies High School, Culver, IN 46511, USA
| | - Ken Mackie
- Gill Center for Biomolecular Science, Department of Psychological and Brain Sciences, Indiana University Bloomington, Bloomington, IN 47405, USA
| | - Feng Guo
- Department of Intelligent Systems Engineering, Indiana University Bloomington, Bloomington, IN 47405, USA
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García-Domínguez M. Chronic pain in the elderly: Exploring cellular and molecular mechanisms and therapeutic perspectives. FRONTIERS IN AGING 2024; 5:1477017. [PMID: 39328834 PMCID: PMC11424521 DOI: 10.3389/fragi.2024.1477017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2024] [Accepted: 08/29/2024] [Indexed: 09/28/2024]
Abstract
Chronic pain is a debilitating condition frequently observed in the elderly, involving numerous pathological mechanisms within the nervous system. Diminished local blood flow, nerve degeneration, variations in fiber composition, alterations in ion channels and receptors, accompanied by the sustained activation of immune cells and release of pro-inflammatory cytokines, lead to overactivation of the peripheral nervous system. In the central nervous system, chronic pain is strongly associated with the activation of glial cells, which results in central sensitization and increased pain perception. Moreover, age-related alterations in neural plasticity and disruptions in pain inhibitory pathways can exacerbate chronic pain in older adults. Finally, the environmental influences on the development of chronic pain in the elderly must be considered. An understanding of these mechanisms is essential for developing novel treatments for chronic pain, which can significantly improve the quality of life for this vulnerable population.
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Affiliation(s)
- Mario García-Domínguez
- Program of Immunology and Immunotherapy, CIMA-Universidad de Navarra, Pamplona, Spain
- Department of Immunology and Immunotherapy, Clínica Universidad de Navarra, Pamplona, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
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30
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Liu Q, Yan R, Wang L, Li R, Zhang D, Liao C, Mao S. Alpha-asarone alleviates cutaneous hyperalgesia by inhibiting hyperexcitability and neurogenic inflammation via TLR4/NF-κB/NLRP3 signaling pathway in a female chronic migraine rat model. Neuropharmacology 2024; 261:110158. [PMID: 39276863 DOI: 10.1016/j.neuropharm.2024.110158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 06/28/2024] [Accepted: 09/10/2024] [Indexed: 09/17/2024]
Abstract
Migraine is a highly prevalent neurological disorder. Alpha-asarone (ASA), a major active component found in Acorus tatarinowii, plays a crucial role in analgesia and anti-inflammation for neuropathic pain. This study aimed to assess the efficacy of ASA against migraine and elucidate its potential mechanisms using a well-established inflammatory soup (IS) migraine female rat model. Mechanical pain thresholds were assessed daily before IS infusion, followed by post-infusion administration of ASA. Subsequently, spontaneous locomotor activities, exploratory behavior, short-term spatial memory, and photophobia were blindly evaluated after the final drug administration. The rats were then sacrificed for investigation into the underlying mechanisms of action. Network pharmacology was also employed to predict potential targets and pathways of ASA against migraine. The anti-inflammatory activity of ASA and pathway-related proteins were examined in BV2 cells stimulated with lipopolysaccharides (LPS). The results demonstrated that ASA ameliorated cutaneous hyperalgesia and photophobia while improving spatial memory and increasing exploratory behavior in IS rats. ASA attenuated central sensitization-related indicators and excessive glutamate levels while enhancing GABA synthesis. ASA rescued neuronal loss in the cortex and hippocampus of IS rats. Notably, the ability of ASA to improve spatial memory performance in the Y maze test was not observed with sumatriptan, a first-line treatment drug, suggesting the potential involvement of the TLR4 pathway. Moreover, ASA suppressed microglial activation, reduced pro-inflammatory factors, and downregulated TLR4, MyD88, p-NF-κB/NF-κB, NLRP3, caspase-1, IL-1β, and IL-18. Overall, ASA demonstrated its potential to alleviate hyperalgesia and improve behavioral performance in migraine rats by inhibiting hyperexcitability and microglia-related inflammation.
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Affiliation(s)
- Qi Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Ruijie Yan
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Ling Wang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Rui Li
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Di Zhang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Can Liao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Shengjun Mao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China.
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31
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Lian N, Li F, Zhou C, Yin Y, Kang Y, Luo K, Lui S, Li T, Lu P. Protein phosphatase 2Cm-regulated branched-chain amino acid catabolic defect in dorsal root ganglion neurons drives pain sensitization. Acta Neuropathol Commun 2024; 12:147. [PMID: 39256776 PMCID: PMC11385486 DOI: 10.1186/s40478-024-01856-2] [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: 07/18/2024] [Accepted: 08/31/2024] [Indexed: 09/12/2024] Open
Abstract
Maladaptive changes of metabolic patterns in the lumbar dorsal root ganglion (DRG) are critical for nociceptive hypersensitivity genesis. The accumulation of branched-chain amino acids (BCAAs) in DRG has been implicated in mechanical allodynia and thermal hyperalgesia, but the exact mechanism is not fully understood. This study aimed to explore how BCAA catabolism in DRG modulates pain sensitization. Wildtype male mice were fed a high-fat diet (HFD) for 8 weeks. Adult PP2Cmfl/fl mice of both sexes were intrathecally injected with pAAV9-hSyn-Cre to delete the mitochondrial targeted 2 C-type serine/threonine protein phosphatase (PP2Cm) in DRG neurons. Here, we reported that BCAA catabolism was impaired in the lumbar 4-5 (L4-L5) DRGs of mice fed a high-fat diet (HFD). Conditional deletion of PP2Cm in DRG neurons led to mechanical allodynia, heat and cold hyperalgesia. Mechanistically, the genetic knockout of PP2Cm resulted in the upregulation of C-C chemokine ligand 5/C-C chemokine receptor 5 (CCL5/CCR5) axis and an increase in transient receptor potential ankyrin 1 (TRPA1) expression. Blocking the CCL5/CCR5 signaling or TRPA1 alleviated pain behaviors induced by PP2Cm deletion. Thus, targeting BCAA catabolism in DRG neurons may be a potential management strategy for pain sensitization.
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Affiliation(s)
- Nan Lian
- Laboratory of Mitochondria and Metabolism, West China Hospital of Sichuan University, Chengdu, 610041, China
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - Fangzhou Li
- Department of Anesthesiology, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital of Sichuan University, Chengdu, 610041, China
- Department of Anesthesiology, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - Cheng Zhou
- Department of Anesthesiology, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - Yan Yin
- Department of Pain Management, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - Yi Kang
- Department of Anesthesiology, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - Kaiteng Luo
- Laboratory of Mitochondria and Metabolism, West China Hospital of Sichuan University, Chengdu, 610041, China
- Department of Anesthesiology, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital of Sichuan University, Chengdu, 610041, China
- Department of Anesthesiology, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - Su Lui
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital of Sichuan University, Chengdu, 610041, China
| | - Tao Li
- Laboratory of Mitochondria and Metabolism, West China Hospital of Sichuan University, Chengdu, 610041, China.
- Department of Anesthesiology, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital of Sichuan University, Chengdu, 610041, China.
- West China Hospital, Sichuan University, No 37 Wainan Guoxue Road, Chengdu, 610041, Sichuan, China.
| | - Peilin Lu
- Laboratory of Mitochondria and Metabolism, West China Hospital of Sichuan University, Chengdu, 610041, China.
- Department of Anesthesiology, National-Local Joint Engineering Research Centre of Translational Medicine of Anesthesiology, West China Hospital of Sichuan University, Chengdu, 610041, China.
- Department of Anesthesiology, West China Hospital of Sichuan University, Chengdu, 610041, China.
- West China Hospital, Sichuan University, No 37 Wainan Guoxue Road, Chengdu, 610041, Sichuan, China.
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32
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Ashina H, Christensen RH, Hay DL, Pradhan AA, Hoffmann J, Reglodi D, Russo AF, Ashina M. Pituitary adenylate cyclase-activating polypeptide signalling as a therapeutic target in migraine. Nat Rev Neurol 2024:10.1038/s41582-024-01011-4. [PMID: 39256637 DOI: 10.1038/s41582-024-01011-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/01/2024] [Indexed: 09/12/2024]
Abstract
Migraine is a disabling neurological disorder that affects more than one billion people worldwide. The clinical presentation is characterized by recurrent headache attacks, which are often accompanied by photophobia, phonophobia, nausea and vomiting. Although the pathogenesis of migraine remains incompletely understood, mounting evidence suggests that specific signalling molecules are involved in the initiation and modulation of migraine attacks. These signalling molecules include pituitary adenylate cyclase-activating polypeptide (PACAP), a vasoactive peptide that is known to induce migraine attacks when administered by intravenous infusion to people with migraine. Discoveries linking PACAP to migraine pathogenesis have led to the development of drugs that target PACAP signalling, and a phase II trial has provided evidence that a monoclonal antibody against PACAP is effective for migraine prevention. In this Review, we explore the molecular and cellular mechanisms of PACAP signalling, shedding light on its role in the trigeminovascular system and migraine pathogenesis. We then discuss emerging therapeutic strategies that target PACAP signalling for the treatment of migraine and consider the research needed to translate the current knowledge into a treatment for migraine in the clinic.
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Affiliation(s)
- Håkan Ashina
- Department of Neurology, Danish Headache Center, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Translational Research Center, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
| | - Rune H Christensen
- Department of Neurology, Danish Headache Center, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Translational Research Center, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Debbie L Hay
- Department of Pharmacology and Toxicology, University of Otago, Dunedin, New Zealand
| | - Amynah A Pradhan
- Center for Clinical Pharmacology, Department of Anaesthesiology, Washington University in St Louis, St Louis, MO, USA
| | - Jan Hoffmann
- Wolfson Centre for Age-Related Diseases, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Dora Reglodi
- Department of Anatomy, Centre for Neuroscience, University of Pécs Medical School, Pécs, Hungary
| | - Andrew F Russo
- Department of Molecular Physiology and Biophysics, University of Iowa, Veterans Affairs Healthcare System, Iowa City, IA, USA
- Department of Neurology, University of Iowa, Veterans Affairs Healthcare System, Iowa City, IA, USA
| | - Messoud Ashina
- Department of Neurology, Danish Headache Center, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark.
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
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Suárez-Suárez C, González-Pérez S, Márquez-Miranda V, Araya-Duran I, Vidal-Beltrán I, Vergara S, Carvacho I, Hinostroza F. The Endocannabinoid Peptide RVD-Hemopressin Is a TRPV1 Channel Blocker. Biomolecules 2024; 14:1134. [PMID: 39334900 PMCID: PMC11430712 DOI: 10.3390/biom14091134] [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: 08/01/2024] [Revised: 08/27/2024] [Accepted: 08/29/2024] [Indexed: 09/30/2024] Open
Abstract
Neurotransmission is critical for brain function, allowing neurons to communicate through neurotransmitters and neuropeptides. RVD-hemopressin (RVD-Hp), a novel peptide identified in noradrenergic neurons, modulates cannabinoid receptors CB1 and CB2. Unlike hemopressin (Hp), which induces anxiogenic behaviors via transient receptor potential vanilloid 1 (TRPV1) activation, RVD-Hp counteracts these effects, suggesting that it may block TRPV1. This study investigates RVD-Hp's role as a TRPV1 channel blocker using HEK293 cells expressing TRPV1-GFP. Calcium imaging and patch-clamp recordings demonstrated that RVD-Hp reduces TRPV1-mediated calcium influx and TRPV1 ion currents. Molecular docking and dynamics simulations indicated that RVD-Hp interacts with TRPV1's selectivity filter, forming stable hydrogen bonds and van der Waals contacts, thus preventing ion permeation. These findings highlight RVD-Hp's potential as a therapeutic agent for conditions involving TRPV1 activation, such as pain and anxiety.
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Affiliation(s)
- Constanza Suárez-Suárez
- Facultad de Ciencias Agrarias y Forestales, Universidad Católica del Maule, Talca 3460000, Chile; (C.S.-S.); (S.G.-P.)
| | - Sebastián González-Pérez
- Facultad de Ciencias Agrarias y Forestales, Universidad Católica del Maule, Talca 3460000, Chile; (C.S.-S.); (S.G.-P.)
| | - Valeria Márquez-Miranda
- Center for Bioinformatics and Integrative Biology (CBIB), Universidad Andrés Bello, Santiago 8370146, Chile; (V.M.-M.); (I.A.-D.)
| | - Ingrid Araya-Duran
- Center for Bioinformatics and Integrative Biology (CBIB), Universidad Andrés Bello, Santiago 8370146, Chile; (V.M.-M.); (I.A.-D.)
| | - Isabel Vidal-Beltrán
- Centro de Investigación de Estudios Avanzados del Maule (CIEAM), Vicerrectoría de Investigación y Postgrado, Universidad Católica del Maule, Talca 3460000, Chile;
| | - Sebastián Vergara
- Departamento de Medicina Traslacional, Facultad de Medicina, Universidad Católica del Maule, Talca 3460000, Chile; (S.V.); (I.C.)
| | - Ingrid Carvacho
- Departamento de Medicina Traslacional, Facultad de Medicina, Universidad Católica del Maule, Talca 3460000, Chile; (S.V.); (I.C.)
| | - Fernando Hinostroza
- Centro de Investigación de Estudios Avanzados del Maule (CIEAM), Vicerrectoría de Investigación y Postgrado, Universidad Católica del Maule, Talca 3460000, Chile;
- Departamento de Medicina Traslacional, Facultad de Medicina, Universidad Católica del Maule, Talca 3460000, Chile; (S.V.); (I.C.)
- Centro de Investigación en Neuropsicología y Neurociencias Cognitivas, Facultad de Ciencias de la Salud, Universidad Católica del Maule, Talca 3460000, Chile
- Centro para la Investigación Traslacional en Neurofarmacología, Universidad de Valparaíso, Valparaíso 2340000, Chile
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Joshi PR, Adhikari S, Onah C, Carrier C, Judd A, Mack M, Baral P. Lung-innervating nociceptor sensory neurons promote pneumonic sepsis during carbapenem-resistant Klebsiella pneumoniae lung infection. SCIENCE ADVANCES 2024; 10:eadl6162. [PMID: 39241063 PMCID: PMC11378917 DOI: 10.1126/sciadv.adl6162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 07/30/2024] [Indexed: 09/08/2024]
Abstract
Carbapenem-resistant Klebsiella pneumoniae (CRKP) causes Gram-negative lung infections and fatal pneumonic sepsis for which limited therapeutic options are available. The lungs are densely innervated by nociceptor sensory neurons that mediate breathing, cough, and bronchoconstriction. The role of nociceptors in defense against Gram-negative lung pathogens is unknown. Here, we found that lung-innervating nociceptors promote CRKP pneumonia and pneumonic sepsis. Ablation of nociceptors in mice increased lung CRKP clearance, suppressed trans-alveolar dissemination of CRKP, and protected mice from hypothermia and death. Furthermore, ablation of nociceptors enhanced the recruitment of neutrophils and Ly6Chi monocytes and cytokine induction. Depletion of Ly6Chi monocytes, but not of neutrophils, abrogated lung and extrapulmonary CRKP clearance in ablated mice, suggesting that Ly6Chi monocytes are a critical cellular population to regulate pneumonic sepsis. Further, neuropeptide calcitonin gene-related peptide suppressed the induction of reactive oxygen species in Ly6Chi monocytes and their CRKP-killing abilities. Targeting nociceptor signaling could be a therapeutic approach for treating multidrug-resistant Gram-negative infection and pneumonic sepsis.
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Affiliation(s)
- Prabhu Raj Joshi
- Section of Microbiology and Immunology, Division of Biology, Kansas State University, Manhattan, KS 66506, USA
| | - Sandeep Adhikari
- Section of Microbiology and Immunology, Division of Biology, Kansas State University, Manhattan, KS 66506, USA
| | - Chinemerem Onah
- Section of Microbiology and Immunology, Division of Biology, Kansas State University, Manhattan, KS 66506, USA
| | - Camille Carrier
- Section of Microbiology and Immunology, Division of Biology, Kansas State University, Manhattan, KS 66506, USA
| | - Abigail Judd
- Section of Microbiology and Immunology, Division of Biology, Kansas State University, Manhattan, KS 66506, USA
| | - Matthias Mack
- Department of Nephrology, Regensburg University Medical Center, Regensburg 93042, Germany
| | - Pankaj Baral
- Section of Microbiology and Immunology, Division of Biology, Kansas State University, Manhattan, KS 66506, USA
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35
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Pan LLH, Chen SP, Ling YH, Wang YF, Lai KL, Liu HY, Chen WT, Huang WJ, Coppola G, Treede RD, Wang SJ. Salivary Testosterone Levels and Pain Perception Exhibit Sex-Specific Association in Healthy Adults But Not in Patients With Migraine. THE JOURNAL OF PAIN 2024; 25:104575. [PMID: 38788888 DOI: 10.1016/j.jpain.2024.104575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 04/30/2024] [Accepted: 05/16/2024] [Indexed: 05/26/2024]
Abstract
This study investigated the sex-specific associations between pain perception and testosterone levels in healthy controls (HCs) and patients with migraine. Male and female HCs and migraine patients were recruited. A series of questionnaires were completed by the participants to evaluate their psychosocial profiles, which included data on mood, stress, and sleep quality. Heat pain thresholds and suprathreshold pain ratings at 45 °C (referred to as the pain perception score [PPS]) were assessed using the Thermode system. Salivary testosterone levels were analyzed using a commercial enzyme-linked immunosorbent assay kit. A total of 88 HCs (men/women: 41/47, age: 29.9 ± 7.7 years) and 75 migraine patients (men/women: 30/45, age: 31.1 ± 7.7 years) completed all assessments. No significant differences were observed in either the psychosocial profiles or heat pain thresholds and PPSs between the sexes in the control and migraine groups. A positive correlation between testosterone levels and PPSs was identified in the male controls (r = .341, P = .029), whereas a negative correlation was identified in the female controls (r = -.407, P = .005). No such correlations were identified in the migraine group. This study confirms that a negative association is present between PPSs and testosterone levels in female controls, which is in line with the findings that testosterone is associated with reduced pain perception. Our study is the first to demonstrate a sex-specific association between PPSs and testosterone levels in HCs. Moreover, this study also revealed that the presence of migraine appears to disrupt this association. PERSPECTIVE: This study revealed that testosterone levels demonstrate opposite associations with pain perception in healthy men and women. However, the presence of migraine appears to disrupt this sex-specific association.
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Affiliation(s)
- Li-Ling Hope Pan
- Brain Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan.
| | - Shih-Pin Chen
- Brain Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan; College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan; Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; Department of Medical Research, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Yu-Hsiang Ling
- College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Yen-Feng Wang
- College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Kuan-Lin Lai
- College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Hung-Yu Liu
- College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Wei-Ta Chen
- Brain Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan; College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan; Department of Neurology, Keelung Hospital, Ministry of Health and Welfare, Keelung, Taiwan
| | - William J Huang
- College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; Department of Urology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Gianluca Coppola
- Department of Medico‑Surgical Sciences and Biotechnologies, Sapienza University of Rome Polo Pontino, Latina, Italy
| | - Rolf-Detlef Treede
- Mannheim Center for Translational Neurosciences, Medical Faculty Mannheim, Heidelberg University, Heidelberg, Germany
| | - Shuu-Jiun Wang
- Brain Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan; College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan
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Li Y, Jiang Z, Zuo W, Huang C, Zhao J, Liu P, Wang J, Guo J, Zhang X, Wang M, Lu Y, Hou W, Wang Q. Sexual dimorphic distribution of G protein-coupled receptor 30 in pain-related regions of the mouse brain. J Neurochem 2024; 168:2423-2442. [PMID: 37924265 DOI: 10.1111/jnc.15995] [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: 01/16/2023] [Revised: 09/24/2023] [Accepted: 10/04/2023] [Indexed: 11/06/2023]
Abstract
Sex differences in pain sensitivity have contributed to the fact that medications for curing chronic pain are unsatisfactory. However, the underlying mechanism remains to be elucidated. Brain-derived estrogen participates in modulation of sex differences in pain and related emotion. G protein-coupled receptor 30 (GPR30), identified as a novel estrogen receptor with a different distribution than traditional receptors, has been proved to play a vital role in regulating pain affected by estrogen. However, the contribution of its distribution to sexually dimorphic pain-related behaviors has not been fully explored. In the current study, immunofluorescence assays were applied to mark the neurons expressing GPR30 in male and female mice (in metestrus and proestrus phase) in pain-related brain regions. The neurons that express CaMKIIα or VGAT were also labeled to observe overlap with GPR30. We found that females had more GPR30-positive (GPR30+) neurons in the primary somatosensory (S1) and insular cortex (IC) than males. In the lateral habenula (LHb) and the nucleus tractus solitarius (NTS), males had more GPR30+ neurons than females. Moreover, within the LHb, the expression of GPR30 varied with estrous cycle phase; females in metestrus had fewer GPR30+ neurons than those in proestrus. In addition, females had more GPR30+ neurons, which co-expressed CaMKIIα in the medial preoptic nucleus (mPOA) than males, while males had more than females in the basolateral complex of the amygdala (BLA). These findings may partly explain the different modulatory effects of GPR30 in pain and related emotional phenotypes between sexes and provide a basis for comprehension of sexual dimorphism in pain related to estrogen and GPR30, and finally provide new targets for exploiting new treatments of sex-specific pain.
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Affiliation(s)
- You Li
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Zhenhua Jiang
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi Province, China
- Department of Nursing, Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Wenqiang Zuo
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Chenchen Huang
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Jianshuai Zhao
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Peizheng Liu
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Jiajia Wang
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Jingzhi Guo
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Xiao Zhang
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Minghui Wang
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Yan Lu
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Wugang Hou
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Qun Wang
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi Province, China
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Abdelaziz MA, Chen WH, Chang YW, Mindaye SA, Chen CC. Exploring the role of spinal astrocytes in the onset of hyperalgesic priming signals in acid-induced chronic muscle pain. PNAS NEXUS 2024; 3:pgae362. [PMID: 39228816 PMCID: PMC11370897 DOI: 10.1093/pnasnexus/pgae362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Accepted: 08/13/2024] [Indexed: 09/05/2024]
Abstract
Hyperalgesic priming, a form of pain plasticity initiated by initial injury, leads to heightened sensitivity to subsequent noxious stimuli, contributing to chronic pain development in animals. While astrocytes play active roles in modulating synaptic transmission in various pain models, their specific involvement in hyperalgesic priming remains elusive. Here, we show that spinal astrocytes are essential for hyperalgesic priming formation in a mouse model of acid-induced muscle pain. We observed spinal astrocyte activation 4 h after initial acid injection, and inhibition of this activation prevented chronic pain development upon subsequent acid injection. Chemogenetic activation of spinal astrocytes mimicked the first acid-induced hyperalgesic priming. We also demonstrated that spinal phosphorylated extracellular regulated kinase (pERK)-positive neurons were mainly vesicular glutamate transporter-2 positive (Vglut2+) neurons after the first acid injection, and inhibition of spinal pERK prevented astrocyte activation. Furthermore, pharmacological inhibition of astrocytic glutamate transporters glutamate transporter-1 and glutamate-aspartate transporter abolished the hyperalgesic priming. Collectively, our results suggest that pERK activation in Vglut2+ neurons activate astrocytes through astrocytic glutamate transporters. This process eventually establishes hyperalgesic priming through spinal D-serine. We conclude that spinal astrocytes play a crucial role in the transition from acute to chronic pain.
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Affiliation(s)
- Mohamed Abbas Abdelaziz
- Taiwan International Graduate Program in Interdisciplinary Neuroscience, National Cheng Kung University and Academia Sinica, Taipei 11529, Taiwan
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
- Zoology Department, Faculty of Science, Al-Azhar University Assiut Branch, Assiut 71524, Egypt
| | - Wei-Hsin Chen
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Yu-Wang Chang
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Selomon Assefa Mindaye
- Taiwan International Graduate Program in Interdisciplinary Neuroscience, National Cheng Kung University and Academia Sinica, Taipei 11529, Taiwan
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Chien-Chang Chen
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
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Desbois M, Grill B. Molecular regulation of axon termination in mechanosensory neurons. Development 2024; 151:dev202945. [PMID: 39268828 DOI: 10.1242/dev.202945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/15/2024]
Abstract
Spatially and temporally accurate termination of axon outgrowth, a process called axon termination, is required for efficient, precise nervous system construction and wiring. The mechanosensory neurons that sense low-threshold mechanical stimulation or gentle touch have proven exceptionally valuable for studying axon termination over the past 40 years. In this Review, we discuss progress made in deciphering the molecular and genetic mechanisms that govern axon termination in touch receptor neurons. Findings across model organisms, including Caenorhabditis elegans, Drosophila, zebrafish and mice, have revealed that complex signaling is required for termination with conserved principles and players beginning to surface. A key emerging theme is that axon termination is mediated by complex signaling networks that include ubiquitin ligase signaling hubs, kinase cascades, transcription factors, guidance/adhesion receptors and growth factors. Here, we begin a discussion about how these signaling networks could represent termination codes that trigger cessation of axon outgrowth in different species and types of mechanosensory neurons.
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Affiliation(s)
- Muriel Desbois
- School of Life Sciences, Keele University, Keele, Staffordshire, ST5 5BG, UK
| | - Brock Grill
- Center for Integrative Brain Research, Seattle Children's Research Institute, Seattle, WA 98101, USA
- Department of Pediatrics, University of Washington School of Medicine, Seattle, WA 98101, USA
- Department of Pharmacology, University of Washington School of Medicine, Seattle, WA 98101, USA
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Manske S. The Microbiome's Role in Chronic Pain and Inflammation. Integr Med (Encinitas) 2024; 23:10-15. [PMID: 39355413 PMCID: PMC11441585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/03/2024]
Abstract
Context Pain is a universal experience, one that is meant to protect people from further harm or injury, and chronic pain is prominent worldwide. Inflammation plays a central role in chronic pain. Objective The review intended to examine the epidemiology of chronic pain, the ways in which inflammation contributes to it, and the microbiome's role in it, evaluating the function of the oral microbiome and dietary factors. Results The inflammatory response plays a pivotal role in the transition from acute to chronic pain, with various mediators orchestrating a cascade of events that perpetuate pain signaling and sensitization. The microbiome interacts directly with the immune system and plays a fundamental role in addressing inflammation and chronic pain. Dysbiosis within the gut and oral microbiota can fuel systemic inflammation, exacerbating pain symptoms and influencing pain perception through the gut-brain axis. Additionally, microbial metabolites can influence immune function, reducing or perpetuating inflammation, which can further affect the experience of pain. Dietary factors also contribute significantly to inflammation and pain, and poor nutritional choices can exacerbate immune responses and trigger low-grade inflammation, perpetuating chronic-pain conditions. Conclusions Moving forward, a holistic approach to chronic pain management is imperative, addressing not only the symptoms but also the underlying inflammatory processes and systemic contributors. Embracing interdisciplinary collaboration and personalized treatment tailored to the individual patient's needs will be essential in alleviating chronic pain and improving overall quality of life. Through continued research and clinical innovation, healthcare practitioners can work towards more effective and compassionate care for those living with chronic pain.
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Affiliation(s)
- Shawn Manske
- Assistant Director of Clinical Education, Biocidin Botanicals, Watsonville CA, USA
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40
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Wang J, Zhu X, Wu Y. Mer activation ameliorates nerve injury-induced neuropathic pain by regulating microglial polarization and neuroinflammation via SOCS3 in male rats. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024; 397:7037-7050. [PMID: 38639897 DOI: 10.1007/s00210-024-03070-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 03/24/2024] [Indexed: 04/20/2024]
Abstract
Accumulating evidence has demonstrated that M1 microglial polarization and neuroinflammation worsen the development of neuropathic pain. However, the mechanisms underlying microglial activation during neuropathic pain remain incompletely understood. Myeloid-epithelial-reproductive tyrosine kinase (Mer), which is a member of the Tyro-Axl-Mer (TAM) family of receptor tyrosine kinases, plays a crucial role in the regulation of microglial polarization. However, the effect of Mer on microglial polarization during neuropathic pain has not been determined. In this study, western blotting, immunofluorescence analysis, quantitative polymerase chain reaction (qPCR), and enzyme-linked immunosorbent assay (ELISA) were used to examine the role of Mer in pain hypersensitivity and microglial polarization in rats with chronic constriction injury (CCI) of the sciatic nerve. The results indicated that Mer expression in microglia was prominently increased in the spinal cords of rats subjected to CCI. Furthermore, treatment with recombinant protein S (PS, an activator of Mer) alleviated mechanical allodynia and thermal hyperalgesia, promoted the switch in microglia from the M1 phenotype to the M2 phenotype, and ameliorated neuroinflammation in rats subjected to CCI. However, the use of suppressor of cytokine signalling 3 (SOCS3) siRNA abolished these changes. These results indicated that Mer regulated M1/M2 microglial polarization and neuroinflammation and may be a potential target for treating neuropathic pain.
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Affiliation(s)
- Jingqiong Wang
- Health Science Center, Yangtze University, JingZhou, Hubei province, China
- HuangGang Central hospital of Yangtze University, HuangGang, Hubei province, China
| | - Xuanzhi Zhu
- HuangGang Central hospital of Yangtze University, HuangGang, Hubei province, China
| | - Yaohua Wu
- HuangGang Central hospital of Yangtze University, HuangGang, Hubei province, China.
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41
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O'Malley CA, Smith SA, Mauger AR, Norbury R. Exercise-induced pain within endurance exercise settings: Definitions, measurement, mechanisms and potential interventions. Exp Physiol 2024; 109:1446-1460. [PMID: 38985528 PMCID: PMC11363130 DOI: 10.1113/ep091687] [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: 03/27/2024] [Accepted: 06/18/2024] [Indexed: 07/12/2024]
Abstract
Pain can be defined as an unpleasant sensory and emotional experience associated with or resembling that associated with actual or potential tissue damage. Though consistent with this definition, different types of pain result in different behavioural and psychophysiological responses. For example, the transient, non-threatening, acute muscle pain element of exercise-induced pain (EIP) is entirely different from other pain types like delayed onset muscle soreness, muscular injury or chronic pain. However, studies often conflate the definitions or assume parity between distinct pain types. Consequently, the mechanisms through which pain might impact exercise behaviour across different pain subcategories may be incorrectly assumed, which could lead to interventions or recommendations that are inappropriate. Therefore, this review aims to distinguish EIP from other subcategories of pain according to their aetiologies and characteristics, thereby providing an updated conceptual and operational definition of EIP. Secondly, the review will discuss the experimental pain models currently used across several research domains and their relevance to EIP with a focus on the neuro-psychophysiological mechanisms of EIP and its effect on exercise behaviour and performance. Finally, the review will examine potential interventions to cope with the impact of EIP and support wider exercise benefits. HIGHLIGHTS: What is the topic of this review? Considerations for future research focusing on exercise-induced pain within endurance exercise settings. What advances does it highlight? An updated appraisal and guide of research concerning exercise-induced pain and its impact on endurance task behaviour, particularly with reference to the aetiology, measurement, and manipulation of exercise-induced pain.
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Affiliation(s)
- Callum A. O'Malley
- School of Sport, Exercise, and Nutritional SciencesUniversity of ExeterExeterUK
| | - Samuel A. Smith
- School of Sport and Exercise SciencesUniversity of KentCanterburyUK
| | - Alexis R. Mauger
- School of Sport and Exercise SciencesUniversity of KentCanterburyUK
| | - Ryan Norbury
- Faculty of Sport, Technology, and Health SciencesSt Mary's UniversityTwickenhamUK
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Cazuza RA, Zagrai SM, Grieco AR, Avery TD, Abell AD, Wey HY, Loggia ML, Grace PM. 18 kDa Translocator protein (TSPO) is upregulated in rat brain after peripheral nerve injury and downregulated by diroximel fumarate. Brain Behav Immun 2024; 123:11-27. [PMID: 39218234 DOI: 10.1016/j.bbi.2024.08.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Revised: 07/31/2024] [Accepted: 08/29/2024] [Indexed: 09/04/2024] Open
Abstract
Neuroimmune signaling is a key process underlying neuropathic pain. Clinical studies have demonstrated that 18 kDa translocator protein (TSPO), a putative marker of neuroinflammation, is upregulated in discrete brain regions of patients with chronic pain. However, no preclinical studies have investigated TSPO dynamics in the brain in the context of neuropathic pain and in response to analgesic treatments. We used positron emission tomography-computed tomography (PET-CT) and [18F]-PBR06 radioligand to measure TSPO levels in the brain across time after chronic constriction injury (CCI) of the sciatic nerve in both male and female rats. Up to 10 weeks post-CCI, TSPO expression was increased in discrete brain regions, including medial prefrontal cortex, somatosensory cortex, insular cortex, anterior cingulate cortex, motor cortex, ventral tegmental area, amygdala, midbrain, pons, medulla, and nucleus accumbens. TSPO was broadly upregulated across these regions at 4 weeks post CCI in males, and 10 weeks in females, though there were regional differences between the sexes. Using immunohistochemistry, we confirmed TSPO expression in these regions. We further demonstrated that TSPO was upregulated principally in microglia in the nucleus accumbens core, and astrocytes and endothelial cells in the nucleus accumbens shell. Finally, we tested whether TSPO upregulation was sensitive to diroximel fumarate, a drug that induces endogenous antioxidants via nuclear factor E2-related factor 2 (Nrf2). Diroximel fumarate alleviated neuropathic pain and reduced TSPO upregulation. Our findings indicate that TSPO is upregulated over the course of neuropathic pain development and is resolved by an antinociceptive intervention in animals with peripheral nerve injury.
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Affiliation(s)
- Rafael A Cazuza
- Laboratories of Neuroimmunology, Department of Symptom Research, University of Texas MD Anderson Cancer Center, Houston, USA
| | - Sever M Zagrai
- Laboratories of Neuroimmunology, Department of Symptom Research, University of Texas MD Anderson Cancer Center, Houston, USA
| | - Anamaria R Grieco
- Laboratories of Neuroimmunology, Department of Symptom Research, University of Texas MD Anderson Cancer Center, Houston, USA
| | - Thomas D Avery
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), Institute for Photonics and Advanced Sensing (IPAS), Department of Chemistry, University of Adelaide, Adelaide, Australia
| | - Andrew D Abell
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), Institute for Photonics and Advanced Sensing (IPAS), Department of Chemistry, University of Adelaide, Adelaide, Australia
| | - Hsiao-Ying Wey
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Boston, USA
| | - Marco L Loggia
- Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Boston, USA; Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, USA
| | - Peter M Grace
- Laboratories of Neuroimmunology, Department of Symptom Research, University of Texas MD Anderson Cancer Center, Houston, USA.
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Crane J, Zhang W, Otte A, Barik S, Wan M, Cao X. Slit3 by PTH-Induced Osteoblast Secretion Repels Sensory Innervation in Spine Porous Endplates to Relieve Low Back Pain. RESEARCH SQUARE 2024:rs.3.rs-4823095. [PMID: 39257984 PMCID: PMC11384799 DOI: 10.21203/rs.3.rs-4823095/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/12/2024]
Abstract
During aging, the spine undergoes degenerative changes, particularly with vertebral endplate bone expansion and sclerosis, that is associated with nonspecific low back pain (LBP). We reported that parathyroid hormone (PTH) treatment could reduce vertebral endplate sclerosis and improve pain behaviors in aging, SM/J and young lumbar spine instability (LSI) mice. Aberrant innervation noted in the vertebral body and endplate during spinal degeneration was reduced with PTH treatment in aging and LSI mice as quantified by PGP9.5+ and CGRP+ nerve fibers, as well as CGRP expression in dorsal root ganglia (DRG). The neuronal repulsion factor Slit3 significantly increased in response to PTH treatment mediated by transcriptional factor FoxA2. PTH type1 receptor (PPR) and Slit3 deletion in osteoblasts prevented PTH-reduction of endplate porosity and improvement in behavior tests, whereas PPR deletion in chondrocytes continued to respond to PTH. Altogether, PTH stimulates Slit3 to repel sensory nerve innervation and provides symptomatic relief of LBP associated with spinal degeneration.
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Affiliation(s)
| | | | | | | | | | - Xu Cao
- Johns Hopkins University School of Medicine
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44
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Qin Y, Chen X, Yu Z, Zhou X, Wang Y, Li Q, Dai W, Zhang Y, Wang S, Fan Y, Xiao J, Su D, Jiao Y, Yu W. Spinal RAMP1-mediated neuropathic pain sensitisation in the aged mice through the modulation of CGRP-CRLR pain signalling. Heliyon 2024; 10:e35862. [PMID: 39224276 PMCID: PMC11367041 DOI: 10.1016/j.heliyon.2024.e35862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 07/24/2024] [Accepted: 08/05/2024] [Indexed: 09/04/2024] Open
Abstract
Pain sensitivity varies depending on both the state and age of an individual. For example, chronic pain is more common in older individuals, but the underlying mechanisms remain unknown. This study revealed that 18-month-old mice (aged) experienced more severe and long-lasting allodynia and hyperalgesia in the chronic constriction injury (CCI)-induced pain state compared to 2-month-old mice. Interestingly, the aged mice had a higher baseline mechanical pain threshold than the adult mice. The expression of spinal receptor-active modification protein 1 (RAMP1), as a key component and regulator of the calcitonin gene-related peptide (CGRP) receptor for nociceptive transmission from the periphery to the spinal cord, was reduced in the physiological state but significantly increased after CCI in the aged mice compared to the adult mice. Moreover, when RAMP1 was knocked down using shRNA, the pain sensitivity of adult mice decreased significantly, and CCI-induced allodynia in aged mice was reduced. These findings suggest that spinal RAMP1 is involved in regulating pain sensitivity in a state- and age-dependent manner. Additionally, interfering with RAMP1 could be a promising strategy for alleviating chronic pain in older individuals.
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Affiliation(s)
- Yi Qin
- Department of Anesthesiology, Renji Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, 200001, China
- Key Laboratory of Anesthesiology (Shanghai Jiao Tong University), Ministry of Education, China
| | - Xuemei Chen
- Department of Anesthesiology, Renji Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, 200001, China
- Key Laboratory of Anesthesiology (Shanghai Jiao Tong University), Ministry of Education, China
| | - Zhangjie Yu
- Department of Anesthesiology, Renji Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, 200001, China
- Key Laboratory of Anesthesiology (Shanghai Jiao Tong University), Ministry of Education, China
| | - Xiaoxin Zhou
- Department of Anesthesiology, Renji Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, 200001, China
| | - Yihao Wang
- Department of Anesthesiology, Renji Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, 200001, China
| | - Qi Li
- Department of Anesthesiology, Renji Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, 200001, China
| | - Wanbing Dai
- Department of Anesthesiology, Renji Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, 200001, China
| | - Yizhe Zhang
- Department of Anesthesiology, Renji Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, 200001, China
| | - Sa Wang
- Department of Anesthesiology, Renji Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, 200001, China
| | - Yinghui Fan
- Department of Anesthesiology, Renji Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, 200001, China
| | - Jie Xiao
- Department of Anesthesiology, Renji Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, 200001, China
| | - Diansan Su
- Department of Anesthesiology, Renji Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, 200001, China
- Key Laboratory of Anesthesiology (Shanghai Jiao Tong University), Ministry of Education, China
| | - Yingfu Jiao
- Department of Anesthesiology, Renji Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, 200001, China
- Key Laboratory of Anesthesiology (Shanghai Jiao Tong University), Ministry of Education, China
| | - Weifeng Yu
- Department of Anesthesiology, Renji Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, 200001, China
- Key Laboratory of Anesthesiology (Shanghai Jiao Tong University), Ministry of Education, China
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45
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Montagnoli TL, Santos AD, Sudo SZ, Gubert F, Vasques JF, Mendez-Otero R, de Sá MPL, Zapata-Sudo G. Perspectives on Stem Cell Therapy in Diabetic Neuropathic Pain. Neurol Int 2024; 16:933-944. [PMID: 39311343 PMCID: PMC11417725 DOI: 10.3390/neurolint16050070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2024] [Revised: 08/15/2024] [Accepted: 08/21/2024] [Indexed: 09/26/2024] Open
Abstract
Diabetes mellitus-related morbidity and mortality are primarily caused by long-term complications such as retinopathy, nephropathy, cardiomyopathy, and neuropathy. Diabetic neuropathy (DN) involves the progressive degeneration of axons and nerve fibers due to chronic exposure to hyperglycemia. This metabolic disturbance leads to excessive activation of the glycolytic pathway, inducing oxidative stress and mitochondrial dysfunction, ultimately resulting in nerve damage. There is no specific treatment for painful DN, and new approaches should aim not only to relieve pain but also to prevent oxidative stress and reduce inflammation. Given that existing therapies for painful DN are not effective for diabetic patients, mesenchymal stromal cells (MSCs)-based therapy shows promise for providing immunomodulatory and paracrine regulatory functions. MSCs from various sources can improve neuronal dysfunction associated with DN. Transplantation of MSCs has led to a reduction in hyperalgesia and allodynia, along with the recovery of nerve function in diabetic rats. While the pathogenesis of diabetic neuropathic pain is complex, clinical trials have demonstrated the importance of MSCs in modulating the immune response in diabetic patients. MSCs reduce the levels of inflammatory factors and increase anti-inflammatory cytokines, thereby interfering with the progression of DM. Further investigation is necessary to ensure the safety and efficacy of MSCs in preventing or treating neuropathic pain in diabetic patients.
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Affiliation(s)
- Tadeu Lima Montagnoli
- Programa de Pós-Graduação em Farmacologia e Química Medicinal, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (T.L.M.); (A.D.S.)
| | - Aimeé Diogenes Santos
- Programa de Pós-Graduação em Farmacologia e Química Medicinal, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (T.L.M.); (A.D.S.)
| | - Susumu Zapata Sudo
- Programa de Pós-Graduação em Medicina (Cirurgia), Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (S.Z.S.); (M.P.L.d.S.)
| | - Fernanda Gubert
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil;
| | - Juliana Ferreira Vasques
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (J.F.V.); (R.M.-O.)
| | - Rosalia Mendez-Otero
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (J.F.V.); (R.M.-O.)
| | - Mauro Paes Leme de Sá
- Programa de Pós-Graduação em Medicina (Cirurgia), Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (S.Z.S.); (M.P.L.d.S.)
- Instituto do Coração Edson Saad, Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Gisele Zapata-Sudo
- Programa de Pós-Graduação em Farmacologia e Química Medicinal, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (T.L.M.); (A.D.S.)
- Programa de Pós-Graduação em Medicina (Cirurgia), Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (S.Z.S.); (M.P.L.d.S.)
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil;
- Instituto do Coração Edson Saad, Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
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46
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Secondulfo C, Mazzeo F, Pastorino GMG, Vicidomini A, Meccariello R, Operto FF. Opioid and Cannabinoid Systems in Pain: Emerging Molecular Mechanisms and Use in Clinical Practice, Health, and Fitness. Int J Mol Sci 2024; 25:9407. [PMID: 39273354 PMCID: PMC11394805 DOI: 10.3390/ijms25179407] [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: 07/31/2024] [Revised: 08/23/2024] [Accepted: 08/27/2024] [Indexed: 09/15/2024] Open
Abstract
Pain is an unpleasant sensory and emotional experience. Adequate pain control is often challenging, particularly in patients with chronic pain. Despite advances in pain management, drug addiction, overtreatment, or substance use disorders are not rare. Hence the need for further studies in the field. The substantial progress made over the last decade has revealed genes, signalling pathways, molecules, and neuronal networks in pain control thus opening new clinical perspectives in pain management. In this respect, data on the epigenetic modulation of opioid and cannabinoid receptors, key actors in the modulation of pain, offered new perspectives to preserve the activity of opioid and endocannabinoid systems to increase the analgesic efficacy of opioid- and cannabinoid-based drugs. Similarly, upcoming data on cannabidiol (CBD), a non-psychoactive cannabinoid in the marijuana plant Cannabis sativa, suggests analgesic, anti-inflammatory, antioxidant, anticonvulsivant and ansiolitic effects and supports its potential application in clinical contexts such as cancer, neurodegeneration, and autoimmune diseases but also in health and fitness with potential use in athletes. Hence, in this review article, we summarize the emerging epigenetic modifications of opioid and cannabinoid receptors and focus on CBD as an emerging non-psychoactive cannabinoid in pain management in clinical practice, health, and fitness.
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Affiliation(s)
- Carmine Secondulfo
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, 84081 Baronissi, Italy
| | - Filomena Mazzeo
- Department of Economics, Law, Cybersecurity and Sports Sciences, University of Naples Parthenope, 80035 Nola, Italy
| | - Grazia Maria Giovanna Pastorino
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, 84081 Baronissi, Italy
- Child and Adolescent Neuropsychiatry Unit, "San Giovanni di Dio e Ruggi d'Aragona" Hospital, 84131 Salerno, Italy
| | - Antonella Vicidomini
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, 84081 Baronissi, Italy
| | - Rosaria Meccariello
- Department of Medical, Human Movement and Well-Being Sciences, University of Naples Parthenope, 80133 Naples, Italy
| | - Francesca Felicia Operto
- Department of Science of Health, School of Medicine, University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy
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47
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Kantarci H, Elvira PD, Thottumkara AP, O'Connell EM, Iyer M, Donovan LJ, Dugan MQ, Ambiel N, Granados A, Zeng H, Saw NL, Brosius Lutz A, Sloan SA, Gray EE, Tran KV, Vichare A, Yeh AK, Münch AE, Huber M, Agrawal A, Morri M, Zhong H, Shamloo M, Anderson TA, Tawfik VL, Du Bois J, Zuchero JB. Schwann cell-secreted PGE 2 promotes sensory neuron excitability during development. Cell 2024; 187:4690-4712.e30. [PMID: 39142281 DOI: 10.1016/j.cell.2024.07.033] [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: 03/27/2023] [Revised: 04/18/2024] [Accepted: 06/21/2024] [Indexed: 08/16/2024]
Abstract
Electrical excitability-the ability to fire and propagate action potentials-is a signature feature of neurons. How neurons become excitable during development and whether excitability is an intrinsic property of neurons remain unclear. Here, we demonstrate that Schwann cells, the most abundant glia in the peripheral nervous system, promote somatosensory neuron excitability during development. We find that Schwann cells secrete prostaglandin E2, which is necessary and sufficient to induce developing somatosensory neurons to express normal levels of genes required for neuronal function, including voltage-gated sodium channels, and to fire action potential trains. Inactivating this signaling pathway in Schwann cells impairs somatosensory neuron maturation, causing multimodal sensory defects that persist into adulthood. Collectively, our studies uncover a neurodevelopmental role for prostaglandin E2 distinct from its established role in inflammation, revealing a cell non-autonomous mechanism by which glia regulate neuronal excitability to enable the development of normal sensory functions.
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Affiliation(s)
- Husniye Kantarci
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Pablo D Elvira
- Department of Chemistry, Stanford University, Stanford, CA 94305, USA
| | | | - Emma M O'Connell
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Manasi Iyer
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Lauren J Donovan
- Department of Anesthesiology, Perioperative & Pain Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Micaela Quinn Dugan
- Department of Anesthesiology, Perioperative & Pain Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Nicholas Ambiel
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | | | - Hong Zeng
- Transgenic, Knockout and Tumor model Center (TKTC), Cancer Institute, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Nay L Saw
- Behavioral and Functional Neuroscience Laboratory, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Amanda Brosius Lutz
- Department of Obstetrics and Gynecology, University Hospital, Bern, Switzerland
| | - Steven A Sloan
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Erin E Gray
- Department of Chemistry, Stanford University, Stanford, CA 94305, USA
| | - Khanh V Tran
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Aditi Vichare
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Ashley K Yeh
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Alexandra E Münch
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Max Huber
- Chan Zuckerberg Biohub, San Francisco, CA 94158, USA
| | - Aditi Agrawal
- Chan Zuckerberg Biohub, San Francisco, CA 94158, USA
| | | | - Haining Zhong
- Vollum Institute, Oregon Health and Science University, Portland, OR 97239, USA
| | - Mehrdad Shamloo
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA 94305, USA; Behavioral and Functional Neuroscience Laboratory, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Thomas Anthony Anderson
- Department of Anesthesiology, Perioperative & Pain Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Vivianne L Tawfik
- Department of Anesthesiology, Perioperative & Pain Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - J Du Bois
- Department of Chemistry, Stanford University, Stanford, CA 94305, USA.
| | - J Bradley Zuchero
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA 94305, USA.
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48
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Sendetski M, Wedel S, Furutani K, Hahnefeld L, Angioni C, Heering J, Zimmer B, Pierre S, Banica AM, Scholich K, Tunaru S, Geisslinger G, Ji RR, Sisignano M. Oleic acid released by sensory neurons inhibits TRPV1-mediated thermal hypersensitivity via GPR40. iScience 2024; 27:110552. [PMID: 39171292 PMCID: PMC11338150 DOI: 10.1016/j.isci.2024.110552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 06/17/2024] [Accepted: 07/17/2024] [Indexed: 08/23/2024] Open
Abstract
Noxious stimuli activate nociceptive sensory neurons, causing action potential firing and the release of diverse signaling molecules. Several peptides have already been identified to be released by sensory neurons and shown to modulate inflammatory responses and inflammatory pain. However, it is still unclear whether lipid mediators can be released upon sensory neuron activation to modulate intercellular communication. Here, we analyzed the lipid secretome of capsaicin-stimulated nociceptive neurons with LC-HRMS, revealing that oleic acid is strongly released from sensory neurons by capsaicin. We further demonstrated that oleic acid inhibits capsaicin-induced calcium transients in sensory neurons and reverses bradykinin-induced TRPV1 sensitization by a calcineurin (CaN) and GPR40 (FFAR1) dependent pathway. Additionally, oleic acid alleviated zymosan-mediated thermal hypersensitivity via the GPR40, suggesting that the capsaicin-mediated oleic acid release from sensory neurons acts as a protective and feedback mechanism, preventing sensory neurons from nociceptive overstimulation via the GPR40/CaN/TRPV1-axis.
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Affiliation(s)
- Maksim Sendetski
- Goethe University Frankfurt, University Hospital, Institute of Clinical Pharmacology, Theodor-Stern-Kai 7, 60590 Frankfurt Am Main, Germany
| | - Saskia Wedel
- Goethe University Frankfurt, University Hospital, Institute of Clinical Pharmacology, Theodor-Stern-Kai 7, 60590 Frankfurt Am Main, Germany
| | - Kenta Furutani
- Department of Anesthesiology, Center for Translational Pain Medicine, Duke University Medical Center, Durham, NC, USA
| | - Lisa Hahnefeld
- Goethe University Frankfurt, University Hospital, Institute of Clinical Pharmacology, Theodor-Stern-Kai 7, 60590 Frankfurt Am Main, Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Theodor Stern-Kai 7, 60596 Frankfurt Am Main, Germany
- Fraunhofer Cluster of Excellence for Immune-Mediated Diseases (CIMD), Theodor Stern-Kai 7, 60596 Frankfurt Am Main, Germany
| | - Carlo Angioni
- Goethe University Frankfurt, University Hospital, Institute of Clinical Pharmacology, Theodor-Stern-Kai 7, 60590 Frankfurt Am Main, Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Theodor Stern-Kai 7, 60596 Frankfurt Am Main, Germany
| | - Jan Heering
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Theodor Stern-Kai 7, 60596 Frankfurt Am Main, Germany
| | - Béla Zimmer
- Goethe University Frankfurt, University Hospital, Institute of Clinical Pharmacology, Theodor-Stern-Kai 7, 60590 Frankfurt Am Main, Germany
| | - Sandra Pierre
- Goethe University Frankfurt, University Hospital, Institute of Clinical Pharmacology, Theodor-Stern-Kai 7, 60590 Frankfurt Am Main, Germany
| | - Alexandra-Maria Banica
- Cell Signalling Research Group, Institute of Biochemistry of the Romanian Academy, Splaiul Independentei 296, 060031 Bucharest, Romania
| | - Klaus Scholich
- Goethe University Frankfurt, University Hospital, Institute of Clinical Pharmacology, Theodor-Stern-Kai 7, 60590 Frankfurt Am Main, Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Theodor Stern-Kai 7, 60596 Frankfurt Am Main, Germany
| | - Sorin Tunaru
- Cell Signalling Research Group, Institute of Biochemistry of the Romanian Academy, Splaiul Independentei 296, 060031 Bucharest, Romania
| | - Gerd Geisslinger
- Goethe University Frankfurt, University Hospital, Institute of Clinical Pharmacology, Theodor-Stern-Kai 7, 60590 Frankfurt Am Main, Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Theodor Stern-Kai 7, 60596 Frankfurt Am Main, Germany
- Fraunhofer Cluster of Excellence for Immune-Mediated Diseases (CIMD), Theodor Stern-Kai 7, 60596 Frankfurt Am Main, Germany
| | - Ru-Rong Ji
- Department of Anesthesiology, Center for Translational Pain Medicine, Duke University Medical Center, Durham, NC, USA
- Departments of Cell Biology and Neurobiology, Duke University Medical Center, Durham, NC, USA
| | - Marco Sisignano
- Goethe University Frankfurt, University Hospital, Institute of Clinical Pharmacology, Theodor-Stern-Kai 7, 60590 Frankfurt Am Main, Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Theodor Stern-Kai 7, 60596 Frankfurt Am Main, Germany
- Fraunhofer Cluster of Excellence for Immune-Mediated Diseases (CIMD), Theodor Stern-Kai 7, 60596 Frankfurt Am Main, Germany
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49
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Castejón J, Chen F, Yasoda-Mohan A, Ó Sé C, Vanneste S. Chronic pain - A maladaptive compensation to unbalanced hierarchical predictive processing. Neuroimage 2024; 297:120711. [PMID: 38942099 DOI: 10.1016/j.neuroimage.2024.120711] [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: 03/04/2024] [Revised: 06/24/2024] [Accepted: 06/25/2024] [Indexed: 06/30/2024] Open
Abstract
The ability to perceive pain presents an interesting evolutionary advantage to adapt to an ever-changing environment. However, in the case of chronic pain (CP), pain perception hinders the capacity of the system to adapt to changing sensory environments. Similar to other chronic perceptual disorders, CP is also proposed to be a maladaptive compensation to aberrant sensory predictive processing. The local-global oddball paradigm relies on learning hierarchical rules and processing environmental irregularities at a local and global level. Prediction errors (PE) between actual and predicted input typically trigger an update of the forward model to limit the probability of encountering future PEs. It has been hypothesised that CP hinders forward model updating, reflected in increased local deviance and decreased global deviance. In the present study, we used the local-global paradigm to examine how CP influences hierarchical learning relative to healthy controls. As hypothesised, we observed that deviance in the stimulus characteristics evoked heightened local deviance and decreased global deviance of the stimulus-driven PE. This is also accompanied by respective changes in theta phase locking that is correlated with the subjective pain perception. Changes in the global deviant in the stimulus-driven-PE could also be explained by dampened attention-related responses. Changing the context of the auditory stimulus did not however show a difference in the context-driven PE. These findings suggest that CP is accompanied by maladaptive forward model updating where the constant presence of pain perception disrupts local deviance in non-nociceptive domains. Furthermore, we hypothesise that the auditory-processing based biomarker identified here could be a marker of domain-general dysfunction that could be confirmed by future research.
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Affiliation(s)
- Jorge Castejón
- Lab for Clinical and Integrative Neuroscience, Trinity College Institute for Neuroscience, School of Psychology, Trinity College Dublin, Ireland; Senior MSK Physiotherapist CompassPhysio LTD, Ireland
| | - Feifan Chen
- Lab for Clinical and Integrative Neuroscience, Trinity College Institute for Neuroscience, School of Psychology, Trinity College Dublin, Ireland
| | - Anusha Yasoda-Mohan
- Lab for Clinical and Integrative Neuroscience, Trinity College Institute for Neuroscience, School of Psychology, Trinity College Dublin, Ireland; Global Brain Health Institute, Trinity College Dublin, Ireland
| | - Colum Ó Sé
- Lab for Clinical and Integrative Neuroscience, Trinity College Institute for Neuroscience, School of Psychology, Trinity College Dublin, Ireland
| | - Sven Vanneste
- Lab for Clinical and Integrative Neuroscience, Trinity College Institute for Neuroscience, School of Psychology, Trinity College Dublin, Ireland; Global Brain Health Institute, Trinity College Dublin, Ireland.
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50
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Xu Q, Zheng Q, Cui X, Cleland A, Hincapie J, Raja SN, Dong X, Guan Y. Visualizing the modulation of neurokinin 1 receptor-positive neurons in the superficial dorsal horn by spinal cord stimulation in vivo. Pain 2024:00006396-990000000-00683. [PMID: 39140483 DOI: 10.1097/j.pain.0000000000003361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Accepted: 06/25/2024] [Indexed: 08/15/2024]
Abstract
ABSTRACT Spinal cord stimulation (SCS) is an effective modality for pain treatment, yet its underlying mechanisms remain elusive. Neurokinin 1 receptor-positive (NK1R+) neurons in spinal lamina I play a pivotal role in pain transmission. To enhance our mechanistic understanding of SCS-induced analgesia, we investigated how different SCS paradigms modulate the activation of NK1R+ neurons, by developing NK1R-Cre;GCaMP6s transgenic mice and using in vivo calcium imaging of superficial NK1R+ neurons under anesthesia (1.5% isoflurane). Neurokinin 1 receptor-positive neurons in the lumbar spinal cord (L4-5) showed a greater activation by electrical test stimulation (TS, 3.0 mA, 1 Hz) at the hindpaw at 2 weeks after tibia-sparing nerve injury (SNI-t) than in naïve mice. Spinal cord stimulation was then delivered through a bipolar plate electrode placed epidurally at L1-2 level. The short-term 50-Hz high-intensity SCS (80% motor threshold [MoT], 10 minutes) induced robust and prolonged inhibition of NK1R+ neuronal responses to TS in both naïve and SNI-t mice. The 30-minute 50-Hz and 900-Hz SCS applied at moderate intensity (50% MoT) also significantly inhibited neuronal responses in SNI-t mice. However, at low intensity (20% MoT), the 30-minute 900-Hz SCS only induced persistent neuronal inhibition in naïve mice, but not in SNI-t mice. In conclusion, both 10-minute high-intensity SCS and 30-minute SCS at moderate intensity inhibit the activation of superficial NK1R+ neurons, potentially attenuating spinal nociceptive transmission. Furthermore, in vivo calcium imaging of NK1R+ neurons provides a new approach for exploring the spinal neuronal mechanisms of pain inhibition by neuromodulation pain therapies.
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Affiliation(s)
- Qian Xu
- The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University, School of Medicine, Baltimore, MD, United States
- Howard Hughes Medical Institute, Johns Hopkins University, School of Medicine, Baltimore, MD, United States
| | - Qin Zheng
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University, School of Medicine, Baltimore, MD, United States
| | - Xiang Cui
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University, School of Medicine, Baltimore, MD, United States
| | | | | | - Srinivasa N Raja
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University, School of Medicine, Baltimore, MD, United States
| | - Xinzhong Dong
- The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University, School of Medicine, Baltimore, MD, United States
- Howard Hughes Medical Institute, Johns Hopkins University, School of Medicine, Baltimore, MD, United States
- Department of Neurological Surgery, Johns Hopkins University, School of Medicine, Baltimore, MD, United States
| | - Yun Guan
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University, School of Medicine, Baltimore, MD, United States
- Department of Neurological Surgery, Johns Hopkins University, School of Medicine, Baltimore, MD, United States
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