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Baumbach JL, Leonetti AM, Martin LJ. Inflammatory injury induces pain sensitization that is expressed beyond the site of injury in male (and not in female) mice. Behav Brain Res 2024; 475:115215. [PMID: 39191370 DOI: 10.1016/j.bbr.2024.115215] [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: 06/25/2024] [Revised: 08/14/2024] [Accepted: 08/21/2024] [Indexed: 08/29/2024]
Abstract
Pain is a crucial protective mechanism for the body. It alerts us to potential tissue damage or injury and promotes the avoidance of harmful stimuli. Injury-induced inflammation and tissue damage lead to pain sensitization, which amplifies responses to subsequent noxious stimuli even after an initial primary injury has recovered. This phenomenon, commonly referred to as hyperalgesic priming, was investigated in male and female mice to determine whether it is specific to the site of previous injury. We used 10μl of 50 % Freund's complete adjuvant (CFA) administered to the left hind paw as a model of peripheral injury. Both male and female mice exhibited robust site-specific mechanical hypersensitivity after CFA, which resolved within one-week post-injection. After injury resolution, only male CFA-primed mice showed enhanced and prolonged mechanical sensitivity in response to a chemical challenge or a single 0.5 mA electric footshock. Among CFA-primed male mice, shock-induced mechanical hypersensitivity was expressed in both the left (previously injured) and the right (uninjured) hind paws, suggesting a pivotal role for altered centralized processes in the expression of pain sensitization. These findings indicate that pain history regulates sensory responses to subsequent mechanical and chemical pain stimuli in a sex-specific manner-foot-shock-induced hyperalgesic priming expression among male mice generalized beyond the initial injury site.
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Affiliation(s)
| | | | - Loren J Martin
- Department of Psychology, University of Toronto, Canada; Cell and Systems Biology, University of Toronto, Canada.
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2
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Gupta RA, Higham JP, Pearce A, Urriola-Muñoz P, Barker KH, Paine L, Ghooraroo J, Raine T, Hockley JRF, Rahman T, St John Smith E, Brown AJH, Ladds G, Suzuki R, Bulmer DC. GPR35 agonists inhibit TRPA1-mediated colonic nociception through suppression of substance P release. Pain 2024:00006396-990000000-00727. [PMID: 39382322 DOI: 10.1097/j.pain.0000000000003399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Accepted: 07/25/2024] [Indexed: 10/10/2024]
Abstract
ABSTRACT The development of nonopioid analgesics for the treatment of abdominal pain is a pressing clinical problem. To address this, we examined the expression of Gi/o-coupled receptors, which typically inhibit nociceptor activation, in colonic sensory neurons. This led to the identification of the orphan receptor GPR35 as a visceral analgesic drug target because of its marked coexpression with transient receptor potential ankyrin 1 (TRPA1), a mediator of noxious mechanotransduction in the bowel. Building on in silico docking simulations, we confirmed that the mast cell stabiliser, cromolyn (CS), and phosphodiesterase inhibitor, zaprinast, are agonists at mouse GPR35, promoting the activation of different Gi/o subunits. Pretreatment with either CS or zaprinast significantly attenuated TRPA1-mediated colonic nociceptor activation and prevented TRPA1-mediated mechanosensitisation. These effects were lost in tissue from GPR35-/- mice and were shown to be mediated by inhibition of TRPA1-evoked substance P (SP) release. This observation highlights the pronociceptive effect of SP and its contribution to TRPA1-mediated colonic nociceptor activation and sensitisation. Consistent with this mechanism of action, we confirmed that TRPA1-mediated colonic contractions evoked by SP release were abolished by CS pretreatment in a GPR35-dependent manner. Our data demonstrate that GPR35 agonists prevent the activation and sensitisation of colonic nociceptors through the inhibition of TRPA1-mediated SP release. These findings highlight the potential of GPR35 agonists to deliver nonopioid analgesia for the treatment of abdominal pain.
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Affiliation(s)
- Rohit A Gupta
- Department of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge, United Kingdom
| | - James P Higham
- Department of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge, United Kingdom
| | - Abigail Pearce
- Department of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge, United Kingdom
| | - Paulina Urriola-Muñoz
- Department of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge, United Kingdom
| | - Katie H Barker
- Department of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge, United Kingdom
| | - Luke Paine
- Department of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge, United Kingdom
| | - Joshua Ghooraroo
- Department of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge, United Kingdom
| | - Tim Raine
- Department of Gastroenterology, Addenbrookes Hospital, Cambridge University Teaching Hospitals, Cambridge, United Kingdom
| | - James R F Hockley
- Department of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge, United Kingdom
| | - Taufiq Rahman
- Department of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge, United Kingdom
| | - Ewan St John Smith
- Department of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge, United Kingdom
| | - Alastair J H Brown
- Nxera, Steinmetz Building, Granta Park Great Abington, Cambridge, United Kingdom
| | - Graham Ladds
- Department of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge, United Kingdom
| | - Rie Suzuki
- Nxera, Steinmetz Building, Granta Park Great Abington, Cambridge, United Kingdom
| | - David C Bulmer
- Department of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge, United Kingdom
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3
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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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4
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Li YZ, Ji RR. Gene therapy for chronic pain management. Cell Rep Med 2024:101756. [PMID: 39366385 DOI: 10.1016/j.xcrm.2024.101756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 07/20/2024] [Accepted: 09/09/2024] [Indexed: 10/06/2024]
Abstract
Despite significant advances in identifying molecular targets for chronic pain over the past two decades, many remain difficult to target with traditional methods. Gene therapies such as antisense oligonucleotides (ASOs), RNA interference (RNAi), CRISPR, and virus-based delivery systems have played crucial roles in discovering and validating new pain targets. While there has been a surge in gene therapy-based clinical trials, those focusing on pain as the primary outcome remain uncommon. This review examines various gene therapy strategies, including ASOs, small interfering RNA (siRNAs), optogenetics, chemogenetics, and CRISPR, and their delivery methods targeting primary sensory neurons and non-neuronal cells, including glia and chondrocytes. We also explore emerging gene therapy tools and highlight gene therapy's clinical potential in pain management, including trials targeting pain-related diseases. Advances in single-cell analysis of sensory neurons and non-neuronal cells, along with the development of new delivery tools, are poised to accelerate the application of gene therapy in pain medicine.
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Affiliation(s)
- Yi-Ze Li
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University Medical Center, Durham, NC 27710, USA
| | - Ru-Rong Ji
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University Medical Center, Durham, NC 27710, USA; Departments of Neurobiology, Duke University Medical Center, Durham, NC 27710, USA; Departments of Cell Biology, Duke University Medical Center, Durham, NC 27710, USA.
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5
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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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Chen Q, Cai K, Li S, Du X, Wang F, Yang Y, Cai M. Navigating the Global Landscape of Exercise Interventions for Knee Osteoarthritis: Exploring Evolving Trends and Emerging Frontiers From a Bibliometric and Visualization Analysis Perspective (2011-2022). J Am Med Dir Assoc 2024; 25:105269. [PMID: 39299293 DOI: 10.1016/j.jamda.2024.105269] [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: 02/07/2024] [Revised: 08/14/2024] [Accepted: 08/15/2024] [Indexed: 09/22/2024]
Abstract
OBJECTIVES This study utilizes visual analysis methods to retrospectively examine the evolution and trends in exercise interventions for knee osteoarthritis (KOA) research from 2011 to 2022. DESIGN Bibliometric and visualization analysis review. SETTING AND PARTICIPANTS Using the Web of Science database, the literature search range is from January 1, 2011, to December 31, 2022, with the language specified as English and document type set to Article. METHODS Visual analysis was used to analyze literature in the field of exercise interventions for KOA, with KOA and exercise interventions as the key search terms. Visualization maps for countries/regions were created using Tableau and Scimago Graphica software. Institutional, author, and keyword visualization maps were drawn using CiteSpace and VOSviewer software. RESULTS In total, 3137 articles were included in the visual analysis. The United States emerged as the leading country in terms of publication volume and contribution. Moreover, developed countries such as the United States, Australia, United Kingdom, and Canada have established close and stable cooperative relationships. The University of Melbourne stood out as the institution with both the highest publication volume and centrality. At the forefront of research output in this field was Bennell K.L. from the University of Melbourne. The journal with the highest co-citation frequency was Osteoarthritis and Cartilage. The keyword clustering map highlighted an evolution in the field of exercise interventions for KOA, emphasizing 8 key research themes spanning knee osteoarthritis, serum cartilage, osteoarthritis initiative, patellofemoral pain, total knee arthroplasty, exercise-induced hypoalgesia, isometric exercise, and anterior cruciate ligament reconstruction. Burst analysis revealed that older adult was the earliest and most prominent keyword, with contemporary topics such as patellofemoral pain, safety, musculoskeletal disorder, and neuromuscular exercise considered as research hotspots and future directions in this field. CONCLUSIONS AND IMPLICATIONS The global attention on exercise interventions for KOA research is expanding, emphasizing the importance of strengthened connections among developing countries and collaborative author groups. Recent trends have shifted toward topics such as neuromuscular training, treatment safety, and musculoskeletal disorders, whereas research interest in patellofemoral pain remains unabated. Neuromuscular training for KOA represents the current frontier in this field. Future research should delve into the effects of diverse types of exercise interventions for KOA on neuromuscular injury and recovery, exploring feasibility and safety to formulate personalized exercise plans for patients with KOA.
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Affiliation(s)
- Qianhong Chen
- College of Rehabilitation Sciences, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Keren Cai
- College of Rehabilitation Sciences, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Shuyao Li
- College of Rehabilitation Sciences, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Xinlin Du
- College of Rehabilitation Sciences, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Fuqiang Wang
- College of Rehabilitation Sciences, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Yu Yang
- College of Rehabilitation Sciences, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Ming Cai
- Jinshan District Central Hospital affiliated to Shanghai University of Medicine & Health Sciences, Shanghai, China.
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7
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Reijnders-Boerboom GTJA, Jacobs LMC, Helder LS, Panhuizen IF, Brouwer MPJ, Albers KI, Loonen T, Scheffer GJ, Keijzer C, van Basten JPA, Warlé MC. Recovery and immune function after low pressure pneumoperitoneum during robot-assisted radical prostatectomy: a randomised controlled trial. BJU Int 2024; 134:416-425. [PMID: 38784993 DOI: 10.1111/bju.16397] [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: 05/25/2024]
Abstract
OBJECTIVE To compare the effectiveness of low intra-abdominal pressure (IAP) facilitated by deep neuromuscular block (NMB) to standard practice in improving the quality of recovery, preserving immune function, and enhancing parietal perfusion during robot-assisted radical prostatectomy (RARP). PATIENTS AND METHODS In this blinded, randomised controlled trial, 96 patients were randomised to the experimental group with low IAP (8 mmHg) facilitated by deep NMB (post-tetanic count 1-2) or the control group with standard IAP (14 mmHg) and moderate NMB (train-of-four 1-2). Recovery was measured using the 40-item Quality of Recovery questionnaire and 36-item Short-Form Health survey. Immune function was evaluated by plasma damage-associated molecular patterns, cytokines, and ex vivo lipopolysaccharide-stimulated cytokine production. Parietal peritoneum perfusion was measured by analysing the recordings of indocyanine-green injection. RESULTS Quality of recovery was not superior in the experimental group (n = 46) compared to the control group (n = 50). All clinical outcomes, including pain scores, postoperative nausea and vomiting, and hospital stay were similar. There were no significant differences in postoperative plasma concentrations of damage-associated molecular patterns, cytokines, and ex vivo cytokine production capacity. The use of low IAP resulted in better parietal peritoneum perfusion. CONCLUSION Despite better perfusion of the parietal peritoneum, low IAP facilitated by deep NMB did not improve the quality of recovery or preserve immune function compared to standard practice in patients undergoing RARP.
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Affiliation(s)
| | | | - Leonie S Helder
- Radboud University Medical Center, Nijmegen, The Netherlands
| | | | | | - Kim I Albers
- Radboud University Medical Center, Nijmegen, The Netherlands
| | - Tom Loonen
- Radboud University Medical Center, Nijmegen, The Netherlands
| | | | | | | | - Michiel C Warlé
- Radboud University Medical Center, Nijmegen, The Netherlands
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8
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Li L, Yao H, Mo R, Xu L, Chen P, Chen Y, Hu JJ, Xie W, Song XJ. Blocking proteinase-activated receptor 2 signaling relieves pain, suppresses nerve sprouting, improves tissue repair, and enhances analgesic effect of B vitamins in rats with Achilles tendon injury. Pain 2024; 165:2055-2067. [PMID: 38598349 DOI: 10.1097/j.pain.0000000000003229] [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: 07/22/2023] [Accepted: 02/02/2024] [Indexed: 04/12/2024]
Abstract
ABSTRACT Tendon injury produces intractable pain and disability in movement, but the medications for analgesia and restoring functional integrity of tendon are still limited. In this study, we report that proteinase-activated receptor 2 (PAR2) activation in dorsal root ganglion (DRG) neurons contributes to chronic pain and tendon histopathological changes produced by Achilles tendon partial transection injury (TTI). Tendon partial transection injury increases the expression of PAR2 protein in both somata of DRG neurons and their peripheral terminals within the injured Achilles tendon. Activation of PAR2 promotes the primary sensory neuron plasticity by activating downstream cAMP-PKA pathway, phosphorylation of PKC, CaMKII, and CREB. Blocking PAR2 signaling by PAR2 small-interference RNA or antagonistic peptide PIP delays the onset of TTI-induced pain, reverses the ongoing pain, as well as inhibits sensory nerve sprouting, and promotes structural remodeling of the injured tendon. Vitamin B complex (VBC), containing thiamine (B1), pyridoxine (B6), and cyanocobalamin (B12), is effective to ameliorate TTI-induced pain, inhibit ectopic nerve sprouting, and accelerate tendon repair, through suppressing PAR2 activation. These findings reveal a critical role of PAR2 signaling in the development of chronic pain and histopathological alterations of injured tendon following Achilles tendon injury. This study suggests that the pharmaceuticals targeting PAR2, such as VBC, may be an effective approach for the treatment of tendon injury-induced pain and promoting tendon repair.
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Affiliation(s)
- Lihui Li
- Department of Medical Neuroscience, School of Medicine, Southern University of Science and Technology, Shenzhen, China
- SUSTech Center for Pain Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Hongyu Yao
- Department of Medical Neuroscience, School of Medicine, Southern University of Science and Technology, Shenzhen, China
- SUSTech Center for Pain Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Rufan Mo
- SUSTech Center for Pain Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Lihong Xu
- Department of Medical Neuroscience, School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Peng Chen
- Department of Medical Neuroscience, School of Medicine, Southern University of Science and Technology, Shenzhen, China
- SUSTech Center for Pain Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Yuchen Chen
- Department of Medical Neuroscience, School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Jiang-Jian Hu
- Department of Medical Neuroscience, School of Medicine, Southern University of Science and Technology, Shenzhen, China
- SUSTech Center for Pain Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Wei Xie
- The Key Laboratory of Developmental Genes and Human Disease, Ministry of Education, The School of Life Science and Technology, Southeast University, Nanjing, China
| | - Xue-Jun Song
- Department of Medical Neuroscience, School of Medicine, Southern University of Science and Technology, Shenzhen, China
- SUSTech Center for Pain Medicine, Southern University of Science and Technology, Shenzhen, China
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9
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Na D, Park MS, Choi HJ, Yang J, Cho YJ, Jeon JP. Pulsed Radiofrequency Neuromodulation for Post-Stroke Shoulder Pain in Patients with Hemorrhagic Stroke. J Korean Neurosurg Soc 2024; 67:568-577. [PMID: 38356348 PMCID: PMC11375072 DOI: 10.3340/jkns.2023.0204] [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: 09/27/2023] [Accepted: 02/13/2024] [Indexed: 02/16/2024] Open
Abstract
OBJECTIVE Post-stroke shoulder pain (PSSP) is a common complication that limits the range of motion (ROM) of the shoulder, the patient's rehabilitation and in turn, affects the patients' quality of life (QoL). Several treatment modalities such as sling, positioning, strapping, functional electrical stimulation, and nerve block have been suggested in literatures, however none of the treatments had long-term effects for PSSP. In this study, the authors evaluated clinical efficacy of pulsed radiofrequency (PRF) neuromodulation on the suprascapular nerve for PSSP, and suggested it as a potential treatment with long-term effect. METHODS This retrospective case series was conducted at a single center, a private practice institution. From 2013 to 2021, 13 patients with PSSP underwent PRF neuromodulation of the suprascapular nerve. The primary outcome measure was the Visual analog scale (VAS) score. The secondary outcome measurements included the shoulder ROM, Disability assessment scale (DAS), modified Ashworth scale, modified Rankin scale (mRS), and EuroQol-5 dimension-3L questionnaire (EQ-5D-3L) scores. These parameters were evaluated before PRF modulation, immediately after PRF modulation, and every 3 months until the final follow-up visit. RESULTS Six men and seven women were enrolled, and all patients were followed-up for a minimum of 12 months. The mean VAS score was 7.07 points before PRF neuromodulation and 2.38 points immediately post-procedure. Shoulder ROM for abduction and flexion, DAS for pain, mRS, and EQ-5D-3L demonstrated marked improvement. No complications were reported. CONCLUSION PRF neuromodulation of the suprascapular nerve is an effective modality in patients with PSSP, and has long-term effect of pain relief, improvement of QoL.
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Affiliation(s)
- Doyoung Na
- Department of Neurosurgery, Chuncheon Sacred Heart Hospital, College of Medicine, Hallym University, Chucheon, Korea
| | - Mu Seung Park
- Department of Neurosurgery, Chuncheon Sacred Heart Hospital, College of Medicine, Hallym University, Chucheon, Korea
| | - Hyuk Jai Choi
- Department of Neurosurgery, Chuncheon Sacred Heart Hospital, College of Medicine, Hallym University, Chucheon, Korea
| | - Jinseo Yang
- Department of Neurosurgery, Chuncheon Sacred Heart Hospital, College of Medicine, Hallym University, Chucheon, Korea
| | - Yong-Jun Cho
- Department of Neurosurgery, Chuncheon Sacred Heart Hospital, College of Medicine, Hallym University, Chucheon, Korea
| | - Jin Pyeong Jeon
- Department of Neurosurgery, Chuncheon Sacred Heart Hospital, College of Medicine, Hallym University, Chucheon, Korea
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10
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Huang CH, Cheng TY, Wu CY, Chen KH, Wu TL, Chou YC. Embedded Hybrid-Dimensional Heterointerface for Filament Modulation in 2D Material-Based Artificial Nociceptor. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2401946. [PMID: 39103304 PMCID: PMC11422813 DOI: 10.1002/advs.202401946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Revised: 05/09/2024] [Indexed: 08/07/2024]
Abstract
Nociceptors are key sensory receptors that transmit warning signals to the central nervous system in response to painful stimuli. This fundamental process is emulated in an electronic device by developing a novel artificial nociceptor with an ultrathin, nonstoichiometric gallium oxide (GaOx)-silicon oxide heterostructure. A large-area 2D-GaOx film is printed on a substrate through liquid metal printing to facilitate the production of conductive filaments. This nociceptive structure exhibits a unique short-term temporal response following stimulation, enabling a facile demonstration of threshold-switching physics. The developed heterointerface 2D-GaOx film enables the fabrication of fast-switching, low-energy, and compliance-free 2D-GaOx nociceptors, as confirmed through experiments. The accumulation and extrusion of Ag in the oxide matrix are significant for inducing plastic changes in artificial biological sensors. High-resolution transmission electron microscopy and electron energy loss spectroscopy demonstrate that Ag clusters in the material dispersed under electrical bias and regrouped spontaneously when the bias is removed owing to interfacial energy minimization. Moreover, 2D nociceptors are stable; thus, heterointerface engineering can enable effective control of charge transfer in 2D heterostructural devices. Furthermore, the diffusive 2D-GaOx device and its Ag dynamics enable the direct emulation of biological nociceptors, marking an advancement in the hardware implementation of artificial human sensory systems.
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Affiliation(s)
- Chang-Hsun Huang
- Department of Materials Science and Engineering, National Taiwan University, Taipei, 10617, Taiwan
| | - Te-Yu Cheng
- Institute of Physics, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan
| | - Chia-Yi Wu
- Department of Materials Science and Engineering, National Taiwan University, Taipei, 10617, Taiwan
| | - Kuan-Hung Chen
- Department of Materials Science and Engineering, National Taiwan University, Taipei, 10617, Taiwan
| | - Tian-Li Wu
- International College of Semiconductor Technology, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan
| | - Yi-Chia Chou
- Department of Materials Science and Engineering, National Taiwan University, Taipei, 10617, Taiwan
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11
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Nguyen KT, Beauchamp DW, O'Hara RB. A Pathophysiological Approach for Selecting Medications to Treat Nociceptive and Neuropathic Pain in Servicemembers. Mil Med 2024; 189:e1879-e1889. [PMID: 38300182 DOI: 10.1093/milmed/usad506] [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: 05/19/2023] [Revised: 09/12/2023] [Accepted: 01/11/2024] [Indexed: 02/02/2024] Open
Abstract
INTRODUCTION The prevalence of chronic pain of service members (SMs) in the U.S. is estimated to be higher (roughly 31-44%) compared to that of civilian population (26%). This higher prevalence is likely due to the high physical demands related combat and training injuries that are not immediately resolved and worsen over time. Mental Health America reports that chronic pain can lead to other mental health conditions such as severe anxiety, depression, bipolar disorder, and post-traumatic stress disorder. Such mental health conditions can negatively affect job performance, reduce readiness for military duties, and often lead to patterns of misuse of opioid after SMs entering civilian life. The primary objective of this narrative review is to present a summarized guideline for the treatment of two types of pain that likely affect SMs, namely nociceptive somatic pain and neuropathic pain. This review focused on a stepwise approach starting with nonopioid interventions prior to opioid therapy. The secondary objective of this review is to elucidate the primary mechanisms of action and pathways associated with these two types of pain. METHODS We followed the Scale for Assessment of Narrative Review Articles when transcribing this narrative review article to enhance the quality and brevity of this review. This Scale has 0.77% an intra-class coefficient of correlation, 95% confidence interval and 0.88 inter-rater reliability. We searched PubMed, Google Scholar, WorldCAT, and the Cochrane Library for the primary and secondary articles that targeted mechanisms of action, pathways, and pharmacological modalities for nociceptive somatic and neuropathic pain that were published from 2011 to 2022. We excluded articles related to pediatric, some specific pain conditions such as cancer-related pain, palliative care, end-of-life care, and articles that were not written in English language. For pharmacologic selection, we adopted the guidelines from the Policy for Implementation of a Comprehensive Policy on Pain Management by the Military Health Care system for the Fiscal Year 2021; the Clinical Practice Guidance for Opioid Therapy for Chronic Pain by the Department of Defense/Veterans Health Administration (2022); the (2021) Implementation of a Comprehensive Policy on Pain Management by the Military Health Care System; and the (2022) Guideline for Prescribing Opioids for Chronic Painby the Centers for Disease Control. DISCUSSION From the knowledge of the mechanisms of action and pathways, we can be more likely to identify the causative origins of pain. As a result, we can correctly diagnose the type of pain, properly develop an efficient and personalized treatment plan, minimize adverse effects, and optimize clinical outcomes. The guideline, however, does not serve as a substitute for clinical judgment in patient-centered decision-making. Medication choices should be individualized judiciously based on the patient's comorbid conditions, available social and economic resources, and the patient's preferences to balance the benefits and risks associated with various pain medications and to achieve optimal pain relief and improve the patient's quality of life.
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Affiliation(s)
- Khan Thi Nguyen
- Interdisciplinary Pain Management Clinic, William Beaumont Army Medical Center, Fort Bliss, TX 79918, USA
| | - Daniel W Beauchamp
- Interdisciplinary Pain Management Clinic, William Beaumont Army Medical Center, Fort Bliss, TX 79918, USA
| | - Reginald B O'Hara
- Department of Clinical Investigation, William Beaumont Army Medical Center, Fort Bliss, TX 79918, USA
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12
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Ju D, Park Y, Noh M, Koo M, Kim S. HfAlOx-based ferroelectric memristor for nociceptor and synapse functions. J Chem Phys 2024; 161:084706. [PMID: 39185849 DOI: 10.1063/5.0224896] [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: 06/21/2024] [Accepted: 08/11/2024] [Indexed: 08/27/2024] Open
Abstract
Efficient data processing is heavily reliant on prioritizing specific stimuli and categorizing incoming information. Within human biological systems, dorsal root ganglions (particularly nociceptors situated in the skin) perform a pivotal role in detecting external stimuli. These neurons send warnings to our brain, priming it to anticipate potential harm and prevent injury. In this study, we explore the potential of using a ferroelectric memristor device structured as a metal-ferroelectric-insulator-semiconductor as an artificial nociceptor. The aim of this device is to electrically receive external damage and interpret signals of danger. The TiN/HfAlOx (HAO)/HfSiOx (HSO)/n+ Si configuration of this device replicates the key functions of a biological nociceptor. The emulation includes crucial aspects, such as threshold reactivity, relaxation, no adaptation, and sensitization phenomena known as "allodynia" and "hyperalgesia." Moreover, we propose establishing a connection between nociceptors and synapses by training the Hebbian learning rule. This involves exposing the device to injurious stimuli and using this experience to enhance its responsiveness, replicating synaptic plasticity.
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Affiliation(s)
- Dongyeol Ju
- Division of Electronics and Electrical Engineering, Dongguk University, Seoul 04620, Republic of Korea
| | - Yongjin Park
- Division of Electronics and Electrical Engineering, Dongguk University, Seoul 04620, Republic of Korea
| | - Minseo Noh
- Division of Electronics and Electrical Engineering, Dongguk University, Seoul 04620, Republic of Korea
| | - Minsuk Koo
- Department of Computer Science and Engineering, Incheon National University, Incheon 22012, South Korea
| | - Sungjun Kim
- Division of Electronics and Electrical Engineering, Dongguk University, Seoul 04620, Republic of Korea
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13
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Chen T, Ran Q, Wang Y, Zhang W, Tang X, Han Y, Zhang K. A Flexible Memristor Based on CsPbCl 3 Nanocrystals for an Artificial Nociceptor. J Phys Chem Lett 2024; 15:8555-8561. [PMID: 39137320 DOI: 10.1021/acs.jpclett.4c01944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2024]
Abstract
Halide perovskites (HPs) based memristors show great potential in the simulation of biological neurons. Herein, a memristor with Ag/PMMA&CsPbCl3/ITO structure is developed by incorporating CsPbCl3 nanocrystals (NCs) into poly(methyl methacrylate) (PMMA) as the functional layer. The device exhibits typical bipolar resistive behavior, low operating voltage, good endurance of more than 400 cycles, consistent and excellent ON/OFF ratio (≈ 103), and high mechanical bending stability (bending times = 1000). The RS mechanism has been well explained by the electric field induced formation and rupture of Ag filaments in the PMMA&CsPbCl3 layer. More importantly, the memristor successfully displays fundamental nociceptive functions including threshold, nonadaptation, relaxation, and sensitization (allodynia and hyperalgesia). To demonstrate the feasibility of the artificial nociceptor, a pressure nociceptor system is constructed using the Ag/PMMA&CsPbCl3/ITO device. These results provide new perspectives for the development of next-generation, high-performance HPs based neural morphology devices.
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Affiliation(s)
- Ting Chen
- Tianjin Key Laboratory of Film Electronic and Communication Devices, School of Integrated Circuit Science and Engineering, Tianjin University of Technology, Tianjin 300384, China
| | - Qian Ran
- Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - Yuchan Wang
- Tianjin Key Laboratory of Film Electronic and Communication Devices, School of Integrated Circuit Science and Engineering, Tianjin University of Technology, Tianjin 300384, China
| | - Wenxia Zhang
- Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - Xiaosheng Tang
- Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - Yemei Han
- Tianjin Key Laboratory of Film Electronic and Communication Devices, School of Integrated Circuit Science and Engineering, Tianjin University of Technology, Tianjin 300384, China
| | - Kailiang Zhang
- Tianjin Key Laboratory of Film Electronic and Communication Devices, School of Integrated Circuit Science and Engineering, Tianjin University of Technology, Tianjin 300384, China
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Li Y, He G, Wang W, Fu C, Jiang S, Fortunato E, Martins R. A high-performance organic lithium salt-doped OFET with the optical radical effect for photoelectric pulse synaptic simulation and neuromorphic memory learning. MATERIALS HORIZONS 2024; 11:3867-3877. [PMID: 38787754 DOI: 10.1039/d4mh00297k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2024]
Abstract
Simulation of synaptic characteristics is essential for the application of organic field effect transistors (OFETs) in neural morphology. Although excellent performance, including bias stability and mobility, as well as photoelectric pulse synaptic simulation, has been achieved in SiO2-gated OFETs with PDVT-10 as an organic channel, there are relatively few studies on photoelectric pulse synaptic simulation of electrolyte-gated OFETs based on environmentally friendly and low-voltage operation. Herein, synaptic transistors based on organic semiconductors are reported to simulate the photoelectric pulse response by developing solution-based organic semiconductor PDVT-10, and polyvinyl alcohol (PVA) with an electric double layer (EDL) effect to act as a channel and gate dielectric layer, respectively, and organic lithium salt-doped PVA is used to enhance the EDL effect. The presence of electrical pulses in doped devices not only achieves basic electrical synaptic characteristics, but also significantly realizes the long-term characteristics, pain perception, memory and sensitization applications. Furthermore, the introduction of photoinitiator molecules into the channel layer leads to improved photosynaptic performances by using light-induced free radicals, and the photoelectric synergistic effect has been actualized by introducing heterojunction architecture. This work provides promising prospects for achieving photoelectric pulse modulation based on organic synaptic devices, which shows great potential for the development of artificial intelligence.
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Affiliation(s)
- Yujiao Li
- Field Effect Device & Flexible Display Lab, School of Materials Science and Engineering, Anhui University, Hefei 230601, P. R. China.
| | - Gang He
- Field Effect Device & Flexible Display Lab, School of Materials Science and Engineering, Anhui University, Hefei 230601, P. R. China.
| | - Wenhao Wang
- Field Effect Device & Flexible Display Lab, School of Materials Science and Engineering, Anhui University, Hefei 230601, P. R. China.
| | - Can Fu
- Field Effect Device & Flexible Display Lab, School of Materials Science and Engineering, Anhui University, Hefei 230601, P. R. China.
| | - Shanshan Jiang
- School of Integrated Circuits, Anhui University, Hefei 230601, P. R. China
| | - Elvira Fortunato
- Department of Materials Science/CENIMAT-I3N, Faculty of Sciences and Technology, New University of Lisbon and CEMOP-UNINOVA Campus de Caparica 2829-516 Caparica, Portugal
| | - Rodrigo Martins
- Department of Materials Science/CENIMAT-I3N, Faculty of Sciences and Technology, New University of Lisbon and CEMOP-UNINOVA Campus de Caparica 2829-516 Caparica, Portugal
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15
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Otis C, Cristofanilli KA, Frezier M, Delsart A, Martel-Pelletier J, Pelletier JP, Beaudry F, Lussier B, Boyer A, Troncy E. Predictive and concurrent validity of pain sensitivity phenotype, neuropeptidomics and neuroepigenetics in the MI-RAT osteoarthritic surgical model in rats. Front Cell Dev Biol 2024; 12:1400650. [PMID: 39175874 PMCID: PMC11338919 DOI: 10.3389/fcell.2024.1400650] [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: 03/13/2024] [Accepted: 07/23/2024] [Indexed: 08/24/2024] Open
Abstract
Background Micro-RNAs could provide great insights about the neuropathological mechanisms associated with osteoarthritis (OA) pain processing. Using the validated Montreal Induction of Rat Arthritis Testing (MI-RAT) model, this study aimed to characterize neuroepigenetic markers susceptible to correlate with innovative pain functional phenotype and targeted neuropeptide alterations. Methods Functional biomechanical, somatosensory sensitization (peripheral-via tactile paw withdrawal threshold; central-via response to mechanical temporal summation), and diffuse noxious inhibitory control (via conditioned pain modulation) alterations were assessed sequentially in OA (n = 12) and Naïve (n = 12) rats. Joint structural, targeted spinal neuropeptides and differential expression of spinal cord micro-RNAs analyses were conducted at the sacrifice (day (D) 56). Results The MI-RAT model caused important structural damages (reaching 35.77% of cartilage surface) compared to the Naïve group (P < 0.001). This was concomitantly associated with nociceptive sensitization: ipsilateral weight shift to the contralateral hind limb (asymmetry index) from -55.61% ± 8.50% (D7) to -26.29% ± 8.50% (D35) (P < 0.0001); mechanical pain hypersensitivity was present as soon as D7 and persisting until D56 (P < 0.008); central sensitization was evident at D21 (P = 0.038); pain endogenous inhibitory control was distinguished with higher conditioned pain modulation rate (P < 0.05) at D7, D21, and D35 as a reflect of filtrated pain perception. Somatosensory profile alterations of OA rats were translated in a persistent elevation of pro-nociceptive neuropeptides substance P and bradykinin, along with an increased expression of spinal miR-181b (P = 0.029) at D56. Conclusion The MI-RAT OA model is associated, not only with structural lesions and static weight-bearing alterations, but also with a somatosensory profile that encompasses pain centralized sensitization, associated to active endogenous inhibitory/facilitatory controls, and corresponding neuropeptidomic and neuroepigenetic alterations. This preliminary neuroepigenetic research confirms the crucial role of pain endogenous inhibitory control in the development of OA chronic pain (not only hypersensitivity) and validates the MI-RAT model for its study.
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Affiliation(s)
- Colombe Otis
- Research Group in Animal Pharmacology of Quebec (GREPAQ), Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - Katrine-Ann Cristofanilli
- Research Group in Animal Pharmacology of Quebec (GREPAQ), Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - Marilyn Frezier
- Research Group in Animal Pharmacology of Quebec (GREPAQ), Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - Aliénor Delsart
- Research Group in Animal Pharmacology of Quebec (GREPAQ), Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - Johanne Martel-Pelletier
- Research Group in Animal Pharmacology of Quebec (GREPAQ), Université de Montréal, Saint-Hyacinthe, QC, Canada
- Osteoarthritis Research Unit, University of Montreal Hospital Research Center (CRCHUM), Saint-Hyacinthe, QC, Canada
| | - Jean-Pierre Pelletier
- Research Group in Animal Pharmacology of Quebec (GREPAQ), Université de Montréal, Saint-Hyacinthe, QC, Canada
- Osteoarthritis Research Unit, University of Montreal Hospital Research Center (CRCHUM), Saint-Hyacinthe, QC, Canada
| | - Francis Beaudry
- Département de Biomédecine Vétérinaire, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada
- Centre Interdisciplinaire de Recherche sur le Cerveau et L’apprentissage (CIRCA), Université de Montréal, Montreal, QC, Canada
| | - Bertrand Lussier
- Research Group in Animal Pharmacology of Quebec (GREPAQ), Université de Montréal, Saint-Hyacinthe, QC, Canada
- Osteoarthritis Research Unit, University of Montreal Hospital Research Center (CRCHUM), Saint-Hyacinthe, QC, Canada
| | - Alexandre Boyer
- Research Group in Animal Pharmacology of Quebec (GREPAQ), Université de Montréal, Saint-Hyacinthe, QC, Canada
- Département de Biomédecine Vétérinaire, Faculty of Veterinary Medicine, Université de Montréal, Saint-Hyacinthe, QC, Canada
| | - Eric Troncy
- Research Group in Animal Pharmacology of Quebec (GREPAQ), Université de Montréal, Saint-Hyacinthe, QC, Canada
- Osteoarthritis Research Unit, University of Montreal Hospital Research Center (CRCHUM), Saint-Hyacinthe, QC, Canada
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16
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Zhang Z, Wang T, Luo Z, Zaib MH, Yi M, Zeng H, Li P, Tang D, Verkhratsky A, Nie H. Anti-inflammatory and analgesic properties of Polyphyllin VI revealed by network pharmacology and RNA sequencing. Purinergic Signal 2024; 20:449-463. [PMID: 37981630 PMCID: PMC11303374 DOI: 10.1007/s11302-023-09979-2] [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: 08/23/2023] [Accepted: 11/07/2023] [Indexed: 11/21/2023] Open
Abstract
Inflammatory pain, sustained by a complex network of inflammatory mediators, is a severe and persistent illness affecting many of the general population. We explore possible anti-inflammatory pathways of Polyphyllin VI (PPVI) based on our prior study, which showed that PPVI reduces inflammation in mice to reduce pain. Network pharmacology and RNA-Seq identified the contribution of the MAPK signaling pathway to inflammatory pain. In the LPS/ATP-induced RAW264.7 cell model, pretreatment with PPVI for 1 h inhibited the release of IL-6 and IL-8, down-regulated expression of the P2X7 receptor(P2X7R), and decreased phosphorylation of p38 and ERK1/2 components of the MAPK pathway. Moreover, PPVI decreased expression of IL-6 and IL-8 was observed in the serum of the inflammatory pain mice model and reduced phosphorylation of p38 and ERK1/2 in the dorsal root ganglia while the reductions of expression of IL-6 and phosphorylation of ERK1/2 were not observed after the pre-treatment with A740003 (an antagonist of the P2X7R). These results suggest that PPVI may inhibit the release of IL-8 by regulating P2X7R to reduce the phosphorylation of p38. However, the modulation of PPVI on the release of IL-6 and phosphorylation of ERK1/2 may mediated by other P2X7R-independent signals.
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Affiliation(s)
- Zhenglang 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 Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou, 510632, China
| | - Tingting 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 Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou, 510632, China
| | - Zhenhui Luo
- 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 Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou, 510632, China
| | - Muhammad Haris Zaib
- 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 Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou, 510632, China
| | - Mengqin Yi
- 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 Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou, 510632, China
| | - 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 Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou, 510632, China
| | - Peiyang Li
- 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 Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou, 510632, China
| | - Dan Tang
- Key Laboratory of Digital Quality Evaluation of Chinese Materia Medica of State Administration of TCM and Engineering & Technology Research Center for Chinese Materia Medica Quality of Guangdong Province, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Alexei Verkhratsky
- Faculty of Biology, Medicine, and Health, the University of Manchester, Manchester, UK.
| | - 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 Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou, 510632, China.
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Zhao X, Zou H, Wang M, Wang J, Wang T, Wang L, Chen X. Conformal Neuromorphic Bioelectronics for Sense Digitalization. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2403444. [PMID: 38934554 DOI: 10.1002/adma.202403444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 06/03/2024] [Indexed: 06/28/2024]
Abstract
Sense digitalization, the process of transforming sensory experiences into digital data, is an emerging research frontier that links the physical world with human perception and interaction. Inspired by the adaptability, fault tolerance, robustness, and energy efficiency of biological senses, this field drives the development of numerous innovative digitalization techniques. Neuromorphic bioelectronics, characterized by biomimetic adaptability, stand out for their seamless bidirectional interactions with biological entities through stimulus-response and feedback loops, incorporating bio-neuromorphic intelligence for information exchange. This review illustrates recent progress in sensory digitalization, encompassing not only the digital representation of physical sensations such as touch, light, and temperature, correlating to tactile, visual, and thermal perceptions, but also the detection of biochemical stimuli such as gases, ions, and neurotransmitters, mirroring olfactory, gustatory, and neural processes. It thoroughly examines the material design, device manufacturing, and system integration, offering detailed insights. However, the field faces significant challenges, including the development of new device/system paradigms, forging genuine connections with biological systems, ensuring compatibility with the semiconductor industry and overcoming the absence of standardization. Future ambition includes realization of biocompatible neural prosthetics, exoskeletons, soft humanoid robots, and cybernetic devices that integrate smoothly with both biological tissues and artificial components.
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Affiliation(s)
- Xiao Zhao
- State Key Laboratory of Organic Electronics and Information Displays, Jiangsu Key Laboratory of Smart Biomaterials and Theranostic Technology, Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, Nanjing, 210023, China
| | - Haochen Zou
- State Key Laboratory of Organic Electronics and Information Displays, Jiangsu Key Laboratory of Smart Biomaterials and Theranostic Technology, Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, Nanjing, 210023, China
| | - Ming Wang
- Frontier Institute of Chip and System, State Key Laboratory of Integrated Chips and Systems, Fudan University, Shanghai, 200433, China
| | - Jianwu Wang
- Institute for Digital Molecular Analytics and Science (IDMxS), Nanyang Technological University, 59 Nanyang Drive, Singapore, 636921, Singapore
- Innovative Centre for Flexible Devices (iFLEX) Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Ting Wang
- State Key Laboratory of Organic Electronics and Information Displays, Jiangsu Key Laboratory of Smart Biomaterials and Theranostic Technology, Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, Nanjing, 210023, China
| | - Lianhui Wang
- State Key Laboratory of Organic Electronics and Information Displays, Jiangsu Key Laboratory of Smart Biomaterials and Theranostic Technology, Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, Nanjing, 210023, China
| | - Xiaodong Chen
- Institute for Digital Molecular Analytics and Science (IDMxS), Nanyang Technological University, 59 Nanyang Drive, Singapore, 636921, Singapore
- Innovative Centre for Flexible Devices (iFLEX) Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
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Du S, Song Y, Yuan J, Hao R, Wu L, Lei S, Hu W. An Artificial Universal Tactile Nociceptor Based on 2D Polymer Film Memristor Arrays with Tunable Resistance Switching Behaviors. ACS APPLIED MATERIALS & INTERFACES 2024; 16:33907-33916. [PMID: 38889049 DOI: 10.1021/acsami.4c05112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/20/2024]
Abstract
Nociceptor is an important receptor in the organism's sensory system; it can perceive harmful stimuli and send signals to the brain in order to protect the body in time. The injury degree of nociceptor can be divided into three stages: self-healing injury, treatable injury, and permanent injury. However, the current studies on nociceptor simulation are limited to the self-healing stage due to the limitation of the untunable resistance switching behavior of memristors. In this study, we constructed Al/2DPTPAK+TAPB/Ag memristor arrays with adjustable memory behaviors to emulate the nociceptor of biological neural network of all three stages. For this purpose, a PDMS/AgNWs/ITO/PET pressure sensor was assembled to mimic the tactile perception of the skin. The memristor arrays can not only simulate all the response of nociceptor, i.e., the threshold, relaxation, no adaptation, and sensitization with the self-healing injury, but can also simulate the treatable injury and the permanent injury. These behaviors are both demonstrated with a single memristor and in the form of pattern mapping of the memristor array.
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Affiliation(s)
- Shaolin Du
- Key Laboratory of Organic Integrated Circuits, Ministry of Education & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science & Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China
| | - Yaru Song
- Key Laboratory of Organic Integrated Circuits, Ministry of Education & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science & Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China
- State Key Laboratory of Fluorinated Functional Membrane Materials, Shandong Dongyue Polymer Material Co., Ltd., Zibo 256401, China
| | - Jiangyan Yuan
- Key Laboratory of Organic Integrated Circuits, Ministry of Education & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science & Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China
| | - Ruisha Hao
- Key Laboratory of Organic Integrated Circuits, Ministry of Education & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science & Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China
| | - Lingli Wu
- Medical College, Northwest Minzu University, Lanzhou 730000, China
| | - Shengbin Lei
- Key Laboratory of Organic Integrated Circuits, Ministry of Education & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science & Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Wenping Hu
- Key Laboratory of Organic Integrated Circuits, Ministry of Education & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science & Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China
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19
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Merces L, Ferro LMM, Nawaz A, Sonar P. Advanced Neuromorphic Applications Enabled by Synaptic Ion-Gating Vertical Transistors. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2305611. [PMID: 38757653 PMCID: PMC11251569 DOI: 10.1002/advs.202305611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 12/07/2023] [Indexed: 05/18/2024]
Abstract
Bioinspired synaptic devices have shown great potential in artificial intelligence and neuromorphic electronics. Low energy consumption, multi-modal sensing and recording, and multifunctional integration are critical aspects limiting their applications. Recently, a new synaptic device architecture, the ion-gating vertical transistor (IGVT), has been successfully realized and timely applied to perform brain-like perception, such as artificial vision, touch, taste, and hearing. In this short time, IGVTs have already achieved faster data processing speeds and more promising memory capabilities than many conventional neuromorphic devices, even while operating at lower voltages and consuming less power. This work focuses on the cutting-edge progress of IGVT technology, from outstanding fabrication strategies to the design and realization of low-voltage multi-sensing IGVTs for artificial-synapse applications. The fundamental concepts of artificial synaptic IGVTs, such as signal processing, transduction, plasticity, and multi-stimulus perception are discussed comprehensively. The contribution draws special attention to the development and optimization of multi-modal flexible sensor technologies and presents a roadmap for future high-end theoretical and experimental advancements in neuromorphic research that are mostly achievable by the synaptic IGVTs.
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Affiliation(s)
- Leandro Merces
- Research Center for MaterialsArchitectures, and Integration of Nanomembranes (MAIN)Chemnitz University of Technology09126ChemnitzGermany
| | - Letícia Mariê Minatogau Ferro
- Research Center for MaterialsArchitectures, and Integration of Nanomembranes (MAIN)Chemnitz University of Technology09126ChemnitzGermany
| | - Ali Nawaz
- Center for Sensors and DevicesBruno Kessler Foundation (FBK)Trento38123Italy
| | - Prashant Sonar
- School of Chemistry and PhysicsQueensland University of Technology (QUT)BrisbaneQLD4000Australia
- Centre for Materials ScienceQueensland University of Technology2 George StreetBrisbaneQLD4000Australia
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20
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Butera KA, Chimenti RL, Alsouhibani AM, Berardi G, Booker SQ, Knox PJ, Post AA, Merriwether EN, Wilson AT, Simon CB. Through the Lens of Movement-Evoked Pain: A Theoretical Framework of the "Pain-Movement Interface" to Guide Research and Clinical Care for Musculoskeletal Pain Conditions. THE JOURNAL OF PAIN 2024; 25:104486. [PMID: 38316243 PMCID: PMC11180580 DOI: 10.1016/j.jpain.2024.01.351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 01/05/2024] [Accepted: 01/29/2024] [Indexed: 02/07/2024]
Abstract
Over 120 million Americans report experiencing pain in the past 3 months. Among these individuals, 50 million report chronic pain and 17 million report pain that limits daily life or work activities on most days (ie, high-impact chronic pain). Musculoskeletal pain conditions in particular are a major contributor to global disability, health care costs, and poor quality of life. Movement-evoked pain (MEP) is an important and distinct component of the musculoskeletal pain experience and represents an emerging area of study in pain and rehabilitation fields. This focus article proposes the "Pain-Movement Interface" as a theoretical framework of MEP that highlights the interface between MEP, pain interference, and activity engagement. The goal of the framework is to expand knowledge about MEP by guiding scientific inquiry into MEP-specific pathways to disability, high-risk clinical phenotypes, and underlying individual influences that may serve as treatment targets. This framework reinforces the dynamic nature of MEP within the context of activity engagement, participation in life and social roles, and the broader pain experience. Recommendations for MEP evaluation, encompassing the spectrum from high standardization to high patient specificity, and MEP-targeted treatments are provided. Overall, the proposed framework and recommendations reflect the current state of science in this emerging area of study and are intended to support future efforts to optimize musculoskeletal pain management and enhance patient outcomes. PERSPECTIVE: Movement-evoked pain (MEP) is a distinct component of the musculoskeletal pain experience and emerging research area. This article introduces the "Pain-Movement Interface" as a theoretical framework of MEP, highlighting the interface between MEP, pain interference, and activity engagement. Evaluating and treating MEP could improve rehabilitation approaches and enhance patient outcomes.
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Affiliation(s)
- Katie A. Butera
- Department of Physical Therapy, University of Delaware, Newark, Delaware, USA
| | - Ruth L. Chimenti
- Department of Physical Therapy & Rehabilitation Science, University of Iowa, Iowa City, Iowa, USA
| | - Ali M. Alsouhibani
- Department of Physical Therapy, College of Applied Medical Sciences, Qassim University, Buraydah, Saudi Arabia
| | - Giovanni Berardi
- Department of Physical Therapy & Rehabilitation Science, University of Iowa, Iowa City, Iowa, USA
| | - Staja Q. Booker
- Department of Biobehavioral Nursing Science, University of Florida, Gainesville, Florida, USA
| | - Patrick J. Knox
- Department of Physical Therapy, University of Delaware, Newark, Delaware, USA
| | - Andrew A. Post
- Department of Physical Therapy & Rehabilitation Science, University of Iowa, Iowa City, Iowa, USA
| | - Ericka N. Merriwether
- Department of Physical Therapy, NYU Steinhardt School of Culture, Education, and Human Development, Department of Medicine, NYU Grossman School of Medicine, New York University, New York, New York, USA
| | - Abigail T. Wilson
- School of Kinesiology & Rehabilitation Sciences, University of Central Florida, Orlando, Florida, USA
| | - Corey B. Simon
- Department of Orthopaedic Surgery, Duke University, Durham, North Carolina, USA
- Duke Clinical Research Institute, Durham, North Carolina, USA
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21
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Nelson TS, Duran P, Calderon-Rivera A, Gomez K, Loya-Lopez S, Khanna R. Mouse models of non-dystrophic and dystrophic myotonia exhibit nociplastic pain-like behaviors. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.19.599732. [PMID: 38948724 PMCID: PMC11212949 DOI: 10.1101/2024.06.19.599732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/02/2024]
Abstract
Pain is a prominent and debilitating symptom in myotonic disorders, yet its physiological mechanisms remain poorly understood. This study assessed preclinical pain-like behavior in murine models of pharmacologically induced myotonia and myotonic dystrophy type 1 (DM1). In both myotonia congenita and DM1, impairment of the CLCN1 gene, which encodes skeletal muscle voltage-gated CLC-1 chloride channels, reduces chloride ion conductance in skeletal muscle cells, leading to prolonged muscle excitability and delayed relaxation after contraction. We used the CLC-1 antagonist anthracene-9-carboxylic acid (9-AC) at intraperitoneal doses of 30 or 60 mg/kg and HSA LR20b DM1 mice to model CLC-1-induced myotonia. Our experimental approach included in vivo pain behavioral testing, ex vivo calcium imaging, and whole-cell current-clamp electrophysiology in mouse dorsal root ganglion (DRG) neurons. A single injection of 9-AC induced myotonia in mice, which persisted for several hours and resulted in long-lasting allodynic pain-like behavior. Similarly, HSA LR20b mice exhibited both allodynia and hyperalgesia. Despite these pain-like behaviors, DRG neurons did not show signs of hyperexcitability in either myotonic model. These findings suggest that myotonia induces nociplastic pain-like behavior in preclinical rodents, likely through central sensitization mechanisms rather than peripheral sensitization. This study provides insights into the pathophysiology of pain in myotonic disorders and highlights the potential of using myotonic mouse models to explore pain mechanisms and assess novel analgesics. Future research should focus on the central mechanisms involved in myotonia-induced pain and develop targeted therapies to alleviate this significant clinical burden.
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Affiliation(s)
- Tyler S. Nelson
- Department of Pharmacology and Therapeutics, McKnight Brain Institute, and Pain and Addiction Therapeutics (PATH) Collaboratory, University of Florida College of Medicine, Gainesville, FL 32610, USA
| | - Paz Duran
- Department of Molecular Pathobiology, College of Dentistry, New York University, New York, NY 10010, USA
| | - Aida Calderon-Rivera
- Department of Pharmacology and Therapeutics, McKnight Brain Institute, and Pain and Addiction Therapeutics (PATH) Collaboratory, University of Florida College of Medicine, Gainesville, FL 32610, USA
| | - Kimberly Gomez
- Department of Pharmacology and Therapeutics, McKnight Brain Institute, and Pain and Addiction Therapeutics (PATH) Collaboratory, University of Florida College of Medicine, Gainesville, FL 32610, USA
| | - Santiago Loya-Lopez
- Department of Pharmacology and Therapeutics, McKnight Brain Institute, and Pain and Addiction Therapeutics (PATH) Collaboratory, University of Florida College of Medicine, Gainesville, FL 32610, USA
| | - Rajesh Khanna
- Department of Pharmacology and Therapeutics, McKnight Brain Institute, and Pain and Addiction Therapeutics (PATH) Collaboratory, University of Florida College of Medicine, Gainesville, FL 32610, USA
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22
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Zhu X, Jia Z, Zhou Y, Wu J, Cao M, Hu C, Yu L, Chen Z. Current advances in the pain treatment and mechanisms of Traditional Chinese Medicine. Phytother Res 2024. [PMID: 39031847 DOI: 10.1002/ptr.8259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 05/20/2024] [Accepted: 05/20/2024] [Indexed: 07/22/2024]
Abstract
Traditional Chinese Medicine (TCM), as a unique medical model in China, has been shown to be effective in the treatment of many diseases. It has been proven that TCM can increase the pain threshold, increase the level of endorphins and enkephalins in the body, and reduce the body's response to adverse stimuli. In recent years, TCM scholars have made valuable explorations in the field of pain treatment, using methods such as internal and external application of TCM and acupuncture to carry out research on pain treatment and have achieved more satisfactory results. TCM treats pain in a variety of ways, and with the discovery of a variety of potential bioactive substances for pain treatment. With the new progress in the research of other TCM treatment methods for pain, TCM will have greater potential in the clinical application of pain.
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Affiliation(s)
- Xiaoli Zhu
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Zhuolin Jia
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Ye Zhou
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Jie Wu
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Mayijie Cao
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Changjiang Hu
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Lingying Yu
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Zhimin Chen
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
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23
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Qi X, Aiyasamy K, Alenezi SK, Alanazi IM, Alshammari MS, Ibrahim IAA. Anti-nociceptive and Anti-inflammatory Activities of Visnagin in Different Nociceptive and Inflammatory Mice Models. Appl Biochem Biotechnol 2024; 196:3441-3455. [PMID: 37659050 DOI: 10.1007/s12010-023-04677-6] [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] [Accepted: 08/16/2023] [Indexed: 09/05/2023]
Abstract
Pain management has been a severe public health issue throughout the world. Acute pain if not treated at the appropriate time can lead to chronic pain that can cause psychological and social distress. Nothing can be more rewarding than treating pain successfully for a physician. However, the use of chemical NSAIDs and opiate drugs has taken a toll on the patients with their unavoidable side effects. This study intends to explore the potential to treat pain by inhibiting nociception and inflammation with a safer, non-addictive, effective, and low-cost alternative agent from a natural source, visnagin. In vivo studies have been conducted using male Swiss albino mice as models for this research. Nociception was induced using different chemical and thermal stimuli such as acetic acid, glutamate, capsaicin, and formalin. To check for the anti-inflammatory properties, carrageenan was used to induce inflammation and the activity was assayed using peritoneal cavity leukocyte infiltration analysis and pro-inflammatory cytokine level comparison with the supplementation of visnagin at three different dosages. The findings of this study revealed that the visnagin treatment effectively attenuated the acetic acid-induced writhing response, glutamate-induced paw licking numbers, capsaicin-induced pain response, and formalin-induced biphasic licking incidences in the experimental mice models. Furthermore, the visnagin treatment remarkably suppressed the carrageenan-induced inflammation in mice, which is evident from the decreased leukocytes, mononuclear, and polymorphonuclear cell numbers in the mice. The levels of cytokines such as TNF-α, IL-1β, and IL-6 were effectively reduced by the visnagin treatment in the experimental mice. The results of open field test proved that the visnagin showed a better locomotor movement in the experimental mice. These results provided evidence for the potential activity of the visnagin against inflammatory and nociceptive responses in the mice.
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Affiliation(s)
- Xiaobing Qi
- Department of Anesthesiology, Inner Mongolia Baogang Hospital, No. 20, Shaoxian Road, Baotou City, 014010, China
| | - Kalaivani Aiyasamy
- Department of Biochemistry, Vivekanandha College of Arts and Sciences for Women (Autonomous), Namakkal, 637205, Tiruchengode, India
| | - Sattam Khulaif Alenezi
- Department of Pharmacology and Toxicology, Unaizah College of Pharmacy, Qassim University, Buraydah, Qassim, Saudi Arabia
| | - Ibrahim M Alanazi
- Department of Pharmacology and Toxicology, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Mohammed S Alshammari
- Department of Pharmacy Practice, Unaizah College of Pharmacy, Qassim University, Qassim, Saudi Arabia
| | - Ibrahim Abdel Aziz Ibrahim
- Department of Pharmacology and Toxicology, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia.
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24
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Ford AC, Vanner S, Kashyap PC, Nasser Y. Chronic Visceral Pain: New Peripheral Mechanistic Insights and Resulting Treatments. Gastroenterology 2024; 166:976-994. [PMID: 38325759 PMCID: PMC11102851 DOI: 10.1053/j.gastro.2024.01.045] [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: 08/25/2023] [Revised: 11/15/2023] [Accepted: 01/05/2024] [Indexed: 02/09/2024]
Abstract
Chronic visceral pain is one of the most common reasons for patients with gastrointestinal disorders, such as inflammatory bowel disease or disorders of brain-gut interaction, to seek medical attention. It represents a substantial burden to patients and is associated with anxiety, depression, reductions in quality of life, and impaired social functioning, as well as increased direct and indirect health care costs to society. Unfortunately, the diagnosis and treatment of chronic visceral pain is difficult, in part because our understanding of the underlying pathophysiologic basis is incomplete. In this review, we highlight recent advances in peripheral pain signaling and specific physiologic and pathophysiologic preclinical mechanisms that result in the sensitization of peripheral pain pathways. We focus on preclinical mechanisms that have been translated into treatment approaches and summarize the current evidence base for directing treatment toward these mechanisms of chronic visceral pain derived from clinical trials. The effective management of chronic visceral pain remains of critical importance for the quality of life of suffers. A deeper understanding of peripheral pain mechanisms is necessary and may provide the basis for novel therapeutic interventions.
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Affiliation(s)
- Alexander C Ford
- Leeds Institute of Medical Research at St. James's, University of |Leeds, Leeds, United Kingdom; Leeds Gastroenterology Institute, Leeds Teaching Hospitals National Health Service Trust, Leeds, United Kingdom
| | - Stephen Vanner
- Gastrointestinal Diseases Research Unit, Kingston General Hospital, Queen's University, Kingston, Ontario, Canada
| | - Purna C Kashyap
- Division of Gastroenterology and Hepatology, Department of Medicine, Mayo Clinic, Rochester, Minnesota
| | - Yasmin Nasser
- Snyder Institute for Chronic Diseases, Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
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25
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Maiarù M, Leese C, Silva-Hucha S, Fontana-Giusti S, Tait L, Tamagnini F, Davletov B, Hunt SP. Substance P-Botulinum Mediates Long-term Silencing of Pain Pathways that can be Re-instated with a Second Injection of the Construct in Mice. THE JOURNAL OF PAIN 2024; 25:104466. [PMID: 38218509 DOI: 10.1016/j.jpain.2024.01.331] [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: 07/11/2023] [Revised: 01/05/2024] [Accepted: 01/06/2024] [Indexed: 01/15/2024]
Abstract
Chronic pain presents an enormous personal and economic burden and there is an urgent need for effective treatments. In a mouse model of chronic neuropathic pain, selective silencing of key neurons in spinal pain signalling networks with botulinum constructs resulted in a reduction of pain behaviours associated with the peripheral nerve. However, to establish clinical relevance it was important to know how long this silencing period lasted. Now, we show that neuronal silencing and the concomitant reduction of neuropathic mechanical and thermal hypersensitivity lasts for up to 120d following a single injection of botulinum construct. Crucially, we show that silencing and analgesia can then be reinstated with a second injection of the botulinum conjugate. Here we demonstrate that single doses of botulinum-toxin conjugates are a powerful new way of providing long-term neuronal silencing and pain relief. PERSPECTIVE: This research demonstrates that botulinum-toxin conjugates are a powerful new way of providing long-term neuronal silencing without toxicity following a single injection of the conjugate and have the potential for repeated dosing when silencing reverses.
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Affiliation(s)
- Maria Maiarù
- Department of Pharmacology, School of Pharmacy, University of Reading; Room 109, Hopkins Building, Whiteknights Campus, Reading RG6 6UB, United Kingdom
| | - Charlotte Leese
- Department of Biomedical Science, Firth Court, University of Sheffield; Sheffield S10 2TN
| | - Silvia Silva-Hucha
- Department of Cell and Developmental Biology, Medawar Building, University College London; Gower Street, London, WC1E 6BT, United Kingdom
| | - Sofia Fontana-Giusti
- Department of Pharmacology, School of Pharmacy, University of Reading; Room 109, Hopkins Building, Whiteknights Campus, Reading RG6 6UB, United Kingdom
| | - Luke Tait
- Cardiff University Brain Research Imaging Centre, Cardiff University; Cardiff, United Kingdom
| | - Francesco Tamagnini
- Department of Pharmacology, School of Pharmacy, University of Reading; Room 109, Hopkins Building, Whiteknights Campus, Reading RG6 6UB, United Kingdom
| | - Bazbek Davletov
- Department of Biomedical Science, Firth Court, University of Sheffield; Sheffield S10 2TN
| | - Stephen P Hunt
- Department of Cell and Developmental Biology, Medawar Building, University College London; Gower Street, London, WC1E 6BT, United Kingdom
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26
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Zhao M, Zhou M, Lu P, Wang Y, Zeng R, Liu L, Zhu S, Kong L, Zhang J. Local anesthetic delivery systems for the management of postoperative pain. Acta Biomater 2024; 181:1-18. [PMID: 38679404 DOI: 10.1016/j.actbio.2024.04.034] [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: 10/13/2023] [Revised: 03/29/2024] [Accepted: 04/23/2024] [Indexed: 05/01/2024]
Abstract
Postoperative pain (POP) is a major clinical challenge. Local anesthetics (LAs), including amide-type LAs, ester-type LAs, and other potential ion-channel blockers, are emerging as drugs for POP management because of their effectiveness and affordability. However, LAs typically exhibit short durations of action and prolonging the duration by increasing their dosage or concentration may increase the risk of motor block or systemic local anesthetic toxicity. In addition, techniques using LAs, such as intrathecal infusion, require professional operation and are prone to catheter displacement, dislodgement, infection, and nerve damage. With the development of materials science and nanotechnology, various LAs delivery systems have been developed to compensate for these disadvantages. Numerous delivery systems have been designed to continuously release a safe dose in a single administration to ensure minimal systemic toxicity and prolong pain relief. LAs delivery systems can also be designed to control the duration and intensity of analgesia according to changes in the external trigger conditions, achieve on-demand analgesia, and significantly improve pain relief and patient satisfaction. In this review, we summarize POP pathways, animal models and methods for POP testing, and highlight LAs delivery systems for POP management. STATEMENT OF SIGNIFICANCE: Postoperative pain (POP) is a major clinical challenge. Local anesthetics (LAs) are emerging as drugs for POP management because of their effectiveness and affordability. However, they exhibit short durations and toxicity. Various LAs delivery systems have been developed to compensate for these disadvantages. They have been designed to continuously release a safe dose in a single administration to ensure minimal toxicity and prolong pain relief. LAs delivery systems can also be designed to control the duration and intensity of analgesia to achieve on-demand analgesia, and significantly improve pain relief and patient satisfaction. In this paper, we summarize POP pathways, animal models, and methods for POP testing and highlight LAs delivery systems for POP management.
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Affiliation(s)
- Mingxu Zhao
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Key Laboratory of Anesthesia and Perioperative Medicine of Anhui Higher Education Institutes, Anhui Medical University, Hefei, 230032, China; Department of Anesthesiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui 230031, China
| | - Mengni Zhou
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, Hefei, 230032, China
| | - Pengcheng Lu
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Key Laboratory of Anesthesia and Perioperative Medicine of Anhui Higher Education Institutes, Anhui Medical University, Hefei, 230032, China
| | - Ying Wang
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Key Laboratory of Anesthesia and Perioperative Medicine of Anhui Higher Education Institutes, Anhui Medical University, Hefei, 230032, China
| | - Rong Zeng
- Department of Anesthesiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui 230031, China
| | - Lifang Liu
- Department of Anesthesiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui 230031, China
| | - Shasha Zhu
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, Hefei, 230032, China.
| | - Lingsuo Kong
- Department of Anesthesiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui 230031, China.
| | - Jiqian Zhang
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, Key Laboratory of Anesthesia and Perioperative Medicine of Anhui Higher Education Institutes, Anhui Medical University, Hefei, 230032, China.
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27
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Chahyadinata G, Nam JH, Battenberg A, Wainger BJ. Physiological profiling of cannabidiol reveals profound inhibition of sensory neurons. Pain 2024; 165:00006396-990000000-00614. [PMID: 38815194 DOI: 10.1097/j.pain.0000000000003273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 04/02/2024] [Indexed: 06/01/2024]
Abstract
ABSTRACT Cannabidiol (CBD), the main nonpsychoactive cannabinoid of cannabis, holds promise for nonaddictive treatment of pain. Although preclinical studies have been encouraging, well-controlled human trials have been largely unsuccessful. To investigate this dichotomy and better understand the actions of CBD, we used high-content calcium imaging with automated liquid handling and observed broad inhibition of neuronal activation by a host of ionotropic and metabotropic receptors, including transient receptor potential (Trp) and purinergic receptors, as well as mediators of intracellular calcium cycling. To assess the effect of CBD on overall nociceptor electrical activity, we combined the light-activated ion channel channelrhodposin in TRPV1-positive nociceptors and a red-shifted calcium indicator and found that 1 µM CBD profoundly increased the optical threshold for calcium flux activation. Experiments using traditional whole-cell patch-clamp showed increase of nociceptor activation threshold at submicromolar concentrations, but with unusually slow kinetics, as well as block of voltage-activated currents. To address a more integrated capacity of CBD to influence nociceptor sensitization, a process implicated in multiple pain states, we found that submicromolar concentrations of CBD inhibited sensitization by the chemotherapeutic drug vincristine. Taken together, these results demonstrate that CBD can reduce neuronal activity evoked by a strikingly wide range of stimuli implicated in pain signaling. The extensive effects underscore the need for further studies at substantially lower drug concentrations, which are more likely to reflect physiologically relevant mechanisms. The slow kinetics and block raise biophysical questions regarding the lipophilic properties of CBD and its action on channels and receptors within membranes.
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Affiliation(s)
- Gracesenia Chahyadinata
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Joo Hyun Nam
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
- Department of Physiology, Dongguk University College of Medicine, Gyeongju, Republic of Korea
| | - Ashley Battenberg
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Brian J Wainger
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
- Broad Institute of Harvard University and MIT, Cambridge, MA, United States
- Department of Anesthesiology, Critical Care and Pain Medicine, Massachusetts General Hospital, Boston, MA, United States
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28
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Li Y, Li C, Chen QY, Hao S, Mao J, Zhang W, Han X, Dong Z, Liu R, Tang W, Zhuo M, Yu S, Liu Y. Alleviation of migraine related pain and anxiety by inhibiting calcium-stimulating AC1-dependent CGRP in the insula of adult rats. J Headache Pain 2024; 25:81. [PMID: 38760739 PMCID: PMC11100092 DOI: 10.1186/s10194-024-01778-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Accepted: 04/22/2024] [Indexed: 05/19/2024] Open
Abstract
BACKGROUND Recent animal and clinical findings consistently highlight the critical role of calcitonin gene-related peptide (CGRP) in chronic migraine (CM) and related emotional responses. CGRP antibodies and receptor antagonists have been approved for CM treatment. However, the underlying CGRP-related signaling pathways in the pain-related cortex remain poorly understood. METHODS The SD rats were used to establish the CM model by dural infusions of inflammatory soup. Periorbital mechanical thresholds were assessed using von-Frey filaments, and anxiety-like behaviors were observed via open field and elevated plus maze tests. Expression of c-Fos, CGRP and NMDA GluN2B receptors was detected using immunofluorescence and western blotting analyses. The excitatory synaptic transmission was detected by whole-cell patch-clamp recording. A human-used adenylate cyclase 1 (AC1) inhibitor, hNB001, was applied via insula stereotaxic and intraperitoneal injections in CM rats. RESULTS The insular cortex (IC) was activated in the migraine model rats. Glutamate-mediated excitatory transmission and NMDA GluN2B receptors in the IC were potentiated. CGRP levels in the IC significantly increased during nociceptive and anxiety-like activities. Locally applied hNB001 in the IC or intraperitoneally alleviated periorbital mechanical thresholds and anxiety behaviors in migraine rats. Furthermore, CGRP expression in the IC decreased after the hNB001 application. CONCLUSIONS Our study indicated that AC1-dependent IC plasticity contributes to migraine and AC1 may be a promising target for treating migraine in the future.
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Affiliation(s)
- Yang Li
- Department of Neurology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
- Medical School of Chinese PLA, Beijing, China
| | - Chenhao Li
- Department of Neurology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
- Medical School of Chinese PLA, Beijing, China
| | - Qi-Yu Chen
- School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian Province, China
- Zhuomin Institute of Brain Research, Qingdao, Shandong Province, China
| | - Shun Hao
- Zhuomin Institute of Brain Research, Qingdao, Shandong Province, China
| | - Jingrui Mao
- Department of Neurology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
- Medical School of Chinese PLA, Beijing, China
| | - Wenwen Zhang
- Department of Neurology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
- School of Medicine, Nankai University, Tianjin, China
| | - Xun Han
- Department of Neurology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Zhao Dong
- Department of Neurology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Ruozhuo Liu
- Department of Neurology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Wenjing Tang
- Department of Neurology, The First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Min Zhuo
- School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian Province, China.
- Zhuomin Institute of Brain Research, Qingdao, Shandong Province, China.
- Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada.
| | - Shengyuan Yu
- Department of Neurology, The First Medical Center, Chinese PLA General Hospital, Beijing, China.
| | - Yinglu Liu
- Department of Neurology, The First Medical Center, Chinese PLA General Hospital, Beijing, China.
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Shin SM, Itson-Zoske B, Fan F, Xiao Y, Qiu C, Cummins TR, Hogan QH, Yu H. Peripherally targeted analgesia via AAV-mediated sensory neuron-specific inhibition of multiple pronociceptive sodium channels. J Clin Invest 2024; 134:e170813. [PMID: 38722683 PMCID: PMC11213509 DOI: 10.1172/jci170813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 05/07/2024] [Indexed: 06/30/2024] Open
Abstract
This study reports that targeting intrinsically disordered regions of the voltage-gated sodium channel 1.7 (NaV1.7) protein facilitates discovery of sodium channel inhibitory peptide aptamers (NaViPA) for adeno-associated virus-mediated (AAV-mediated), sensory neuron-specific analgesia. A multipronged inhibition of INa1.7, INa1.6, INa1.3, and INa1.1 - but not INa1.5 and INa1.8 - was found for a prototype and named NaViPA1, which was derived from the NaV1.7 intracellular loop 1, and is conserved among the TTXs NaV subtypes. NaViPA1 expression in primary sensory neurons (PSNs) of dorsal root ganglia (DRG) produced significant inhibition of TTXs INa but not TTXr INa. DRG injection of AAV6-encoded NaViPA1 significantly attenuated evoked and spontaneous pain behaviors in both male and female rats with neuropathic pain induced by tibial nerve injury (TNI). Whole-cell current clamp of the PSNs showed that NaViPA1 expression normalized PSN excitability in TNI rats, suggesting that NaViPA1 attenuated pain by reversal of injury-induced neuronal hypersensitivity. IHC revealed efficient NaViPA1 expression restricted in PSNs and their central and peripheral terminals, indicating PSN-restricted AAV biodistribution. Inhibition of sodium channels by NaViPA1 was replicated in the human iPSC-derived sensory neurons. These results summate that NaViPA1 is a promising analgesic lead that, combined with AAV-mediated PSN-specific block of multiple TTXs NaVs, has potential as a peripheral nerve-restricted analgesic therapeutic.
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Affiliation(s)
- Seung Min Shin
- Department of Anesthesiology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Brandon Itson-Zoske
- Department of Anesthesiology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Fan Fan
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, Georgia, USA
| | - Yucheng Xiao
- Department of Biology, School of Science, Indiana University-Purdue University, Indianapolis, Indiana, USA
| | - Chensheng Qiu
- Department of Anesthesiology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
- Department of Orthopedic Surgery, Qingdao Municipal Hospital, Qingdao, China
| | - Theodore R. Cummins
- Department of Biology, School of Science, Indiana University-Purdue University, Indianapolis, Indiana, USA
| | - Quinn H. Hogan
- Department of Anesthesiology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Hongwei Yu
- Department of Anesthesiology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
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Kawanaka R, Jin H, Aoe T. Unraveling the Connection: Pain and Endoplasmic Reticulum Stress. Int J Mol Sci 2024; 25:4995. [PMID: 38732214 PMCID: PMC11084550 DOI: 10.3390/ijms25094995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 04/29/2024] [Accepted: 04/30/2024] [Indexed: 05/13/2024] Open
Abstract
Pain is a complex and multifaceted experience. Recent research has increasingly focused on the role of endoplasmic reticulum (ER) stress in the induction and modulation of pain. The ER is an essential organelle for cells and plays a key role in protein folding and calcium dynamics. Various pathological conditions, such as ischemia, hypoxia, toxic substances, and increased protein production, may disturb protein folding, causing an increase in misfolding proteins in the ER. Such an overload of the folding process leads to ER stress and causes the unfolded protein response (UPR), which increases folding capacity in the ER. Uncompensated ER stress impairs intracellular signaling and cell function, resulting in various diseases, such as diabetes and degenerative neurological diseases. ER stress may be a critical universal mechanism underlying human diseases. Pain sensations involve the central as well as peripheral nervous systems. Several preclinical studies indicate that ER stress in the nervous system is enhanced in various painful states, especially in neuropathic pain conditions. The purpose of this narrative review is to uncover the intricate relationship between ER stress and pain, exploring molecular pathways, implications for various pain conditions, and potential therapeutic strategies.
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Affiliation(s)
- Ryoko Kawanaka
- Department of Anesthesiology, Chiba Medical Center, Teikyo University, Ichihara 299-0111, Japan
| | - Hisayo Jin
- Department of Anesthesiology, Chiba University Graduate School of Medicine, Chiba 260-8670, Japan
| | - Tomohiko Aoe
- Pain Center, Chiba Medical Center, Teikyo University, Ichihara 299-0111, Japan
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Guzzi G, Della Torre A, Bruni A, Lavano A, Bosco V, Garofalo E, La Torre D, Longhini F. Anatomo-physiological basis and applied techniques of electrical neuromodulation in chronic pain. JOURNAL OF ANESTHESIA, ANALGESIA AND CRITICAL CARE 2024; 4:29. [PMID: 38698460 PMCID: PMC11064427 DOI: 10.1186/s44158-024-00167-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Accepted: 04/24/2024] [Indexed: 05/05/2024]
Abstract
Chronic pain, a complex and debilitating condition, poses a significant challenge to both patients and healthcare providers worldwide. Conventional pharmacological interventions often prove inadequate in delivering satisfactory relief while carrying the risks of addiction and adverse reactions. In recent years, electric neuromodulation emerged as a promising alternative in chronic pain management. This method entails the precise administration of electrical stimulation to specific nerves or regions within the central nervous system to regulate pain signals. Through mechanisms that include the alteration of neural activity and the release of endogenous pain-relieving substances, electric neuromodulation can effectively alleviate pain and improve patients' quality of life. Several modalities of electric neuromodulation, with a different grade of invasiveness, provide tailored strategies to tackle various forms and origins of chronic pain. Through an exploration of the anatomical and physiological pathways of chronic pain, encompassing neurotransmitter involvement, this narrative review offers insights into electrical therapies' mechanisms of action, clinical utility, and future perspectives in chronic pain management.
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Affiliation(s)
- Giusy Guzzi
- Neurosurgery Department, "R. Dulbecco" Hospital, Department of Medical and Surgical Sciences, "Magna Graecia" University of Catanzaro, Catanzaro, Italy
| | - Attilio Della Torre
- Neurosurgery Department, "R. Dulbecco" Hospital, Department of Medical and Surgical Sciences, "Magna Graecia" University of Catanzaro, Catanzaro, Italy
| | - Andrea Bruni
- Anesthesia and Intensive Care Unit, "R. Dulbecco" Univesity Hospital, Department of Medical and Surgical Sciences, Magna Graecia University, Viale Europa, Catanzaro, 88100, Italy
| | - Angelo Lavano
- Neurosurgery Department, "R. Dulbecco" Hospital, Department of Medical and Surgical Sciences, "Magna Graecia" University of Catanzaro, Catanzaro, Italy
| | - Vincenzo Bosco
- Anesthesia and Intensive Care Unit, "R. Dulbecco" Univesity Hospital, Department of Medical and Surgical Sciences, Magna Graecia University, Viale Europa, Catanzaro, 88100, Italy
| | - Eugenio Garofalo
- Anesthesia and Intensive Care Unit, "R. Dulbecco" Univesity Hospital, Department of Medical and Surgical Sciences, Magna Graecia University, Viale Europa, Catanzaro, 88100, Italy
| | - Domenico La Torre
- Neurosurgery Department, "R. Dulbecco" Hospital, Department of Medical and Surgical Sciences, "Magna Graecia" University of Catanzaro, Catanzaro, Italy
| | - Federico Longhini
- Anesthesia and Intensive Care Unit, "R. Dulbecco" Univesity Hospital, Department of Medical and Surgical Sciences, Magna Graecia University, Viale Europa, Catanzaro, 88100, Italy.
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Yang C, Wang H, Cao Z, Chen X, Zhou G, Zhao H, Wu Z, Zhao Y, Sun B. Memristor-Based Bionic Tactile Devices: Opening the Door for Next-Generation Artificial Intelligence. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2308918. [PMID: 38149504 DOI: 10.1002/smll.202308918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 11/13/2023] [Indexed: 12/28/2023]
Abstract
Bioinspired tactile devices can effectively mimic and reproduce the functions of the human tactile system, presenting significant potential in the field of next-generation wearable electronics. In particular, memristor-based bionic tactile devices have attracted considerable attention due to their exceptional characteristics of high flexibility, low power consumption, and adaptability. These devices provide advanced wearability and high-precision tactile sensing capabilities, thus emerging as an important research area within bioinspired electronics. This paper delves into the integration of memristors with other sensing and controlling systems and offers a comprehensive analysis of the recent research advancements in memristor-based bionic tactile devices. These advancements incorporate artificial nociceptors and flexible electronic skin (e-skin) into the category of bio-inspired sensors equipped with capabilities for sensing, processing, and responding to stimuli, which are expected to catalyze revolutionary changes in human-computer interaction. Finally, this review discusses the challenges faced by memristor-based bionic tactile devices in terms of material selection, structural design, and sensor signal processing for the development of artificial intelligence. Additionally, it also outlines future research directions and application prospects of these devices, while proposing feasible solutions to address the identified challenges.
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Affiliation(s)
- Chuan Yang
- School of Physical Science and Technology, Key Laboratory of Advanced Technology of Materials, Southwest Jiaotong University, Chengdu, Sichuan, 610031, China
| | - Hongyan Wang
- School of Physical Science and Technology, Key Laboratory of Advanced Technology of Materials, Southwest Jiaotong University, Chengdu, Sichuan, 610031, China
| | - Zelin Cao
- Frontier Institute of Science and Technology (FIST), Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - Xiaoliang Chen
- Frontier Institute of Science and Technology (FIST), Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - Guangdong Zhou
- College of Artificial Intelligence, Brain-inspired Computing & Intelligent Control of Chongqing Key Lab, Southwest University, Chongqing, 400715, China
| | - Hongbin Zhao
- State Key Laboratory of Advanced Materials for Smart Sensing, General Research Institute for Nonferrous Metals, Beijing, 100088, China
| | - Zhenhua Wu
- School of Mechanical Engineering, Shanghai Jiao Tong University, 800 DongChuan Rd, Shanghai, 200240, China
| | - Yong Zhao
- School of Physical Science and Technology, Key Laboratory of Advanced Technology of Materials, Southwest Jiaotong University, Chengdu, Sichuan, 610031, China
- Fujian Provincial Collaborative Innovation Center for Advanced High-Field Superconducting Materials and Engineering, Fujian Normal University, Fuzhou, Fujian, 350117, China
| | - Bai Sun
- Frontier Institute of Science and Technology (FIST), Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
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Martin JR, Coronado R, Wilson JM, Polkowski GG, Shinar AA, Bruehl S. Central Sensitization: The Missing Link Between Psychological Distress and Poor Outcome Following Primary Total Knee Arthroplasty. J Arthroplasty 2024; 39:1201-1206. [PMID: 38128626 PMCID: PMC11032226 DOI: 10.1016/j.arth.2023.12.026] [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: 07/31/2023] [Revised: 12/13/2023] [Accepted: 12/14/2023] [Indexed: 12/23/2023] Open
Abstract
BACKGROUND While preoperative psychological distress is known to predict risk for worse total knee arthroplasty (TKA) outcomes, distress may be too broad and nonspecific a predictor in isolation. We tested whether there are distinct preoperative TKA patient types based jointly on psychological status and measures of altered pain processing that predict adverse clinical outcomes. METHODS In 112 TKA patients, we preoperatively assessed psychological status (depression, anxiety, and catastrophizing) and altered pain processing via a simple quantitative sensory testing protocol capturing peripheral and central pain sensitization. Outcomes (pain, function, opioid use) were prospectively evaluated at 6 weeks and 6 months after TKA. Cluster analyses were used to empirically identify TKA patient subgroups. RESULTS There were 3 distinct preoperative TKA patient subgroups identified from the cluster analysis. A low-risk (LR) group was characterized by low psychological distress and low peripheral and central sensitization. In addition, 2 subgroups with similarly elevated preoperative psychological distress were identified, differing by pain processing alterations observed: high-risk centralized pain and high-risk peripheral pain. Relative to LR patients, high-risk centralized pain patients displayed significantly worse function and greater opioid use at 6 months after TKA (P values <.05). The LR and high-risk peripheral pain patient subgroups had similar 6-month outcomes (P values >.05). CONCLUSIONS Among patients who have psychological comorbidity, only patients who have central sensitization were at elevated risk for poor functional outcomes and increased opioid use. Central sensitization may be the missing link between psychological comorbidity and poor TKA clinical outcomes. Preoperative testing for central sensitization may have clinical utility for improving risk stratification in TKA patients who have psychosocial risk factors.
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Affiliation(s)
- J. Ryan Martin
- Vanderbilt University Medical Center, Department of Orthopedics, 1211 Medical Center Dr, Nashville, TN 37232
| | - Rogelio Coronado
- Vanderbilt University Medical Center, Department of Orthopedics, 1211 Medical Center Dr, Nashville, TN 37232
| | - Jacob M. Wilson
- Vanderbilt University Medical Center, Department of Orthopedics, 1211 Medical Center Dr, Nashville, TN 37232
| | - Gregory G. Polkowski
- Vanderbilt University Medical Center, Department of Orthopedics, 1211 Medical Center Dr, Nashville, TN 37232
| | - Andrew A. Shinar
- Vanderbilt University Medical Center, Department of Orthopedics, 1211 Medical Center Dr, Nashville, TN 37232
| | - Stephen Bruehl
- Vanderbilt University Medical Center, Department of Anesthesia, 1211 Medical Center Dr, Nashville, TN 37232
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Li WW, Shi XY, Wei T, Guo TZ, Kingery WS, Clark JD. Alpha-7 Nicotinic Acetylcholine Receptor Activation Inhibits Trauma Induced Pronociceptive Autoimmune Responses. THE JOURNAL OF PAIN 2024; 25:104422. [PMID: 37951284 PMCID: PMC11058031 DOI: 10.1016/j.jpain.2023.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 09/26/2023] [Accepted: 11/06/2023] [Indexed: 11/13/2023]
Abstract
Both autonomic nervous system dysfunction and immune system activation are characteristic of chronic pain after limb injuries. Cholinergic agonists reduce immune system activation in many settings. We hypothesized, therefore, that alpha-7 nicotinic acetylcholine receptor (α7nAChR) agonist administration would reduce nociceptive and immune changes after tibia fracture and cast immobilization in mice. Fracture mice were treated with either vehicle, a low (.2 mg/kg) dose, or a high (1 mg/kg) dose of the selective α7nAChR agonist PNU-282987 for 4 weeks. We assessed hindpaw allodynia and weight bearing as behavioral outcomes. The assessment of adaptive immune responses included regional lymph node hypertrophy, germinal center formation, α7nAChR expression, and IgM deposition. Assessment of innate immune system activation focused on IL-1β and IL-6 generation in fractured hindlimb skin. We observed that mechanical allodynia and unweighting were alleviated by PNU-282987 treatment. Drug treatment also reduced popliteal lymph node hypertrophy and germinal center formation. Immunohistochemical studies localized α7nAChR to germinal center B lymphocytes, and this expression increased after fracture. Analysis of fracture limb hindpaw skin demonstrated increased inflammatory mediator (IL-1β and IL-6) levels and IgM deposition, which were abrogated by PNU-282987. Serum analyses demonstrated fracture-induced IgM reactivity against keratin 16, histone 3.2, GFAP, and NMDAR-2B. Administration of PNU-282987 reduced the enhancement of IgM reactivity. Collectively, these data suggest that the α7nAChR is involved in regulating posttraumatic innate and adaptive immune responses and the associated nociceptive sensitization. PERSPECTIVE: These studies evaluate the effects of a selective α7nAChR agonist in a tibial fracture/cast immobilization model of limb pain. Administration of the drug reduced nociceptive and functional changes 4 weeks after injury. These novel findings suggest that well-tolerated α7nAChR agonists may be viable analgesics for chronic pain after limb injuries.
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Affiliation(s)
- Wen-wu Li
- Department of Anesthesia, Perioperative and Pain Medicine, Stanford University, School of Medicine, Stanford, CA, 94305, USA
| | - Xiao-you Shi
- Department of Anesthesia, Perioperative and Pain Medicine, Stanford University, School of Medicine, Stanford, CA, 94305, USA
| | - Tzuping Wei
- Palo Alto Veterans Institute for Research, 3801 Miranda Ave, Palo Alto, CA, 94304, USA
| | - Tian-Zhi Guo
- Palo Alto Veterans Institute for Research, 3801 Miranda Ave, Palo Alto, CA, 94304, USA
| | - Wade S Kingery
- Palo Alto Veterans Institute for Research, 3801 Miranda Ave, Palo Alto, CA, 94304, USA
| | - J. David Clark
- Department of Anesthesia, Perioperative and Pain Medicine, Stanford University, School of Medicine, Stanford, CA, 94305, USA
- Anesthesiology Service Veterans Affairs Palo Alto Health Care System, 3801 Miranda Ave, Palo Alto, CA, 94304, USA
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Xie YF, Yang J, Ratté S, Prescott SA. Similar excitability through different sodium channels and implications for the analgesic efficacy of selective drugs. eLife 2024; 12:RP90960. [PMID: 38687187 PMCID: PMC11060714 DOI: 10.7554/elife.90960] [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: 05/02/2024] Open
Abstract
Nociceptive sensory neurons convey pain-related signals to the CNS using action potentials. Loss-of-function mutations in the voltage-gated sodium channel NaV1.7 cause insensitivity to pain (presumably by reducing nociceptor excitability) but clinical trials seeking to treat pain by inhibiting NaV1.7 pharmacologically have struggled. This may reflect the variable contribution of NaV1.7 to nociceptor excitability. Contrary to claims that NaV1.7 is necessary for nociceptors to initiate action potentials, we show that nociceptors can achieve similar excitability using different combinations of NaV1.3, NaV1.7, and NaV1.8. Selectively blocking one of those NaV subtypes reduces nociceptor excitability only if the other subtypes are weakly expressed. For example, excitability relies on NaV1.8 in acutely dissociated nociceptors but responsibility shifts to NaV1.7 and NaV1.3 by the fourth day in culture. A similar shift in NaV dependence occurs in vivo after inflammation, impacting ability of the NaV1.7-selective inhibitor PF-05089771 to reduce pain in behavioral tests. Flexible use of different NaV subtypes exemplifies degeneracy - achieving similar function using different components - and compromises reliable modulation of nociceptor excitability by subtype-selective inhibitors. Identifying the dominant NaV subtype to predict drug efficacy is not trivial. Degeneracy at the cellular level must be considered when choosing drug targets at the molecular level.
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Affiliation(s)
- Yu-Feng Xie
- Neurosciences and Mental Health, The Hospital for Sick ChildrenTorontoCanada
| | - Jane Yang
- Neurosciences and Mental Health, The Hospital for Sick ChildrenTorontoCanada
- Institute of Biomedical Engineering, University of TorontoTorontoCanada
| | - Stéphanie Ratté
- Neurosciences and Mental Health, The Hospital for Sick ChildrenTorontoCanada
| | - Steven A Prescott
- Neurosciences and Mental Health, The Hospital for Sick ChildrenTorontoCanada
- Institute of Biomedical Engineering, University of TorontoTorontoCanada
- Department of Physiology, University of TorontoTorontoCanada
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Xing Q, Cibelli A, Yang GL, Dohare P, Li QH, Scemes E, Guan FX, Spray DC. Neuronal Panx1 drives peripheral sensitization in experimental plantar inflammatory pain. Mil Med Res 2024; 11:27. [PMID: 38685116 PMCID: PMC11057180 DOI: 10.1186/s40779-024-00525-8] [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: 07/01/2023] [Accepted: 03/25/2024] [Indexed: 05/02/2024] Open
Abstract
BACKGROUND The channel-forming protein Pannexin1 (Panx1) has been implicated in both human studies and animal models of chronic pain, but the underlying mechanisms remain incompletely understood. METHODS Wild-type (WT, n = 24), global Panx1 KO (n = 24), neuron-specific Panx1 KO (n = 20), and glia-specific Panx1 KO (n = 20) mice were used in this study at Albert Einstein College of Medicine. The von Frey test was used to quantify pain sensitivity in these mice following complete Freund's adjuvant (CFA) injection (7, 14, and 21 d). The qRT-PCR was employed to measure mRNA levels of Panx1, Panx2, Panx3, Cx43, Calhm1, and β-catenin. Laser scanning confocal microscopy imaging, Sholl analysis, and electrophysiology were utilized to evaluate the impact of Panx1 on neuronal excitability and morphology in Neuro2a and dorsal root ganglion neurons (DRGNs) in which Panx1 expression or function was manipulated. Ethidium bromide (EtBr) dye uptake assay and calcium imaging were employed to investigate the role of Panx1 in adenosine triphosphate (ATP) sensitivity. β-galactosidase (β-gal) staining was applied to determine the relative cellular expression levels of Panx1 in trigeminal ganglia (TG) and DRG of transgenic mice. RESULTS Global or neuron-specific Panx1 deletion markedly decreased pain thresholds after CFA stimuli (7, 14, and 21 d; P < 0.01 vs. WT group), indicating that Panx1 was positively correlated with pain sensitivity. In Neuro2a, global Panx1 deletion dramatically reduced neurite extension and inward currents compared to the WT group (P < 0.05), revealing that Panx1 enhanced neurogenesis and excitability. Similarly, global Panx1 deletion significantly suppressed Wnt/β-catenin dependent DRG neurogenesis following 5 d of nerve growth factor (NGF) treatment (P < 0.01 vs. WT group). Moreover, Panx1 channels enhanced DRG neuron response to ATP after CFA injection (P < 0.01 vs. Panx1 KO group). Furthermore, ATP release increased Ca2+ responses in DRGNs and satellite glial cells surrounding them following 7 d of CFA treatment (P < 0.01 vs. Panx1 KO group), suggesting that Panx1 in glia also impacts exaggerated neuronal excitability. Interestingly, neuron-specific Panx1 deletion was found to markedly reduce differentiation in cultured DRGNs, as evidenced by stunted neurite outgrowth (P < 0.05 vs. Panx1 KO group; P < 0.01 vs. WT group or GFAP-Cre group), blunted activation of Wnt/β-catenin signaling (P < 0.01 vs. WT, Panx1 KO and GFAP-Cre groups), and diminished cell excitability (P < 0.01 vs. GFAP-Cre group) and response to ATP stimulation (P < 0.01 vs. WT group). Analysis of β-gal staining showed that cellular expression levels of Panx1 in neurons are significantly higher (2.5-fold increase) in the DRG than in the TG. CONCLUSIONS The present study revealed that neuronal Panx1 is a prominent driver of peripheral sensitivity in the setting of inflammatory pain through cell-autonomous effects on neuronal excitability. This hyperexcitability dependence on neuronal Panx1 contrasts with inflammatory orofacial pain, where similar studies revealed a prominent role for glial Panx1. The apparent differences in Panx1 expression in neuronal and non-neuronal TG and DRG cells are likely responsible for the distinct impact of these cell types in the two pain models.
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Affiliation(s)
- Qu Xing
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, China
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - Antonio Cibelli
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari Aldo Moro, Bari, 70125, Italy
| | - Greta Luyuan Yang
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
- Department of Molecular Biology and Biochemistry, Wesleyan University, Middletown, CT, 06459, USA
| | - Preeti Dohare
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
- Department of Neuroscience and Experimental Therapeutics, Albany Medical College, Albany, NY, 12208, USA
| | - Qing-Hua Li
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, China
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - Eliana Scemes
- Department of Anatomy and Cell Biology, New York Medical College, Valhalla, NY, 10595, USA
| | - Fang-Xia Guan
- School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, China.
- Institute of Neuroscience, Zhengzhou University, Zhengzhou, 450001, China.
| | - David C Spray
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, 10461, USA.
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Campbell A, Bae J, Hein M, Hillis SL, Rebeck ON, Rakel BA, Grice E, Gardner SE. The heterogeneous wound microbiome varies with wound care pain, dressing type, and inflammatory gene expression. Wound Repair Regen 2024. [PMID: 38666460 DOI: 10.1111/wrr.13184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 03/11/2024] [Accepted: 04/04/2024] [Indexed: 09/28/2024]
Abstract
Wound dressing changes are essential procedures for wound management. However, ~50% of patients experience severe pain during these procedures despite the availability of analgesic medications, indicating a need for novel therapeutics that address underlying causes of pain. Along with other clinical factors, wound pathogens and inflammatory immune responses have previously been implicated in wound pain. To test whether these factors could contribute to severe pain during wound dressing changes, we conducted an exploratory, cross-sectional analysis of patient-reported pain, inflammatory immune responses, and wound microbiome composition in 445 wounds at the time of a study dressing change. We profiled the bacterial composition of 406 wounds using 16S ribosomal RNA amplicon sequencing and quantified gene expression of 13 inflammatory markers in wound fluid using quantitative real-time polymerase chain reaction (qPCR). Neither inflammatory gene expression nor clinically observed inflammation were associated with severe pain, but Corynebacterium and Streptococcus were of lower relative abundance in wounds of patients reporting severe pain than those reporting little or no pain. Wound microbiome composition differed by wound location, and correlated with six of the inflammatory markers, including complement receptor C5AR1, pro-inflammatory cytokine interleukin (IL)1β, chemokine IL-8, matrix metalloproteinase MMP2, and the antimicrobial peptide encoding cathelicidin antimicrobial peptide. Interestingly, we found a relationship between the wound microbiome and vacuum-assisted wound closure (VAC). These findings identify preliminary, associative relationships between wound microbiota and host factors which motivate future investigation into the directional relationships between wound care pain, wound closure technologies, and the wound microbiome.
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Affiliation(s)
- Amy Campbell
- The University of Iowa College of Nursing, Iowa City, Iowa, USA
| | - Jaewon Bae
- The University of Iowa College of Nursing, Iowa City, Iowa, USA
| | - Maria Hein
- The University of Iowa College of Nursing, Iowa City, Iowa, USA
| | | | - Olivia N Rebeck
- The University of Iowa College of Nursing, Iowa City, Iowa, USA
| | - Barbara A Rakel
- The University of Iowa College of Nursing, Iowa City, Iowa, USA
| | - Elizabeth Grice
- The University of Iowa College of Nursing, Iowa City, Iowa, USA
| | - Sue E Gardner
- The University of Iowa College of Nursing, Iowa City, Iowa, USA
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Upadhyay A, Gradwell MA, Vajtay TJ, Conner J, Sanyal AA, Azadegan C, Patel KR, Thackray JK, Bohic M, Imai F, Ogundare SO, Yoshida Y, Abdus-Saboor I, Azim E, Abraira VE. The Dorsal Column Nuclei Scale Mechanical Sensitivity in Naive and Neuropathic Pain States. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.02.20.581208. [PMID: 38712022 PMCID: PMC11071288 DOI: 10.1101/2024.02.20.581208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Tactile perception relies on reliable transmission and modulation of low-threshold information as it travels from the periphery to the brain. During pathological conditions, tactile stimuli can aberrantly engage nociceptive pathways leading to the perception of touch as pain, known as mechanical allodynia. Two main drivers of peripheral tactile information, low-threshold mechanoreceptors (LTMRs) and postsynaptic dorsal column neurons (PSDCs), terminate in the brainstem dorsal column nuclei (DCN). Activity within the DRG, spinal cord, and DCN have all been implicated in mediating allodynia, yet the DCN remains understudied at the cellular, circuit, and functional levels compared to the other two. Here, we show that the gracile nucleus (Gr) of the DCN mediates tactile sensitivity for low-threshold stimuli and contributes to mechanical allodynia during neuropathic pain in mice. We found that the Gr contains local inhibitory interneurons in addition to thalamus-projecting neurons, which are differentially innervated by primary afferents and spinal inputs. Functional manipulations of these distinct Gr neuronal populations resulted in bidirectional changes to tactile sensitivity, but did not affect noxious mechanical or thermal sensitivity. During neuropathic pain, silencing Gr projection neurons or activating Gr inhibitory neurons was able to reduce tactile hypersensitivity, and enhancing inhibition was able to ameliorate paw withdrawal signatures of neuropathic pain, like shaking. Collectively, these results suggest that the Gr plays a specific role in mediating hypersensitivity to low-threshold, innocuous mechanical stimuli during neuropathic pain, and that Gr activity contributes to affective, pain-associated phenotypes of mechanical allodynia. Therefore, these brainstem circuits work in tandem with traditional spinal circuits underlying allodynia, resulting in enhanced signaling of tactile stimuli in the brain during neuropathic pain.
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Affiliation(s)
- Aman Upadhyay
- W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, New Jersey, USA; Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, New Brunswick, New Jersey, USA
- Brain Health Institute, Rutgers University, Piscataway, New Jersey, USA
- Neuroscience PhD program at Rutgers Robert Wood Johnson Medical School, Piscataway, New Jersey, USA
| | - Mark A Gradwell
- W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, New Jersey, USA; Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, New Brunswick, New Jersey, USA
- Brain Health Institute, Rutgers University, Piscataway, New Jersey, USA
| | - Thomas J Vajtay
- W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, New Jersey, USA; Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, New Brunswick, New Jersey, USA
| | - James Conner
- Molecular Neurobiology Laboratory, Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Arnab A Sanyal
- W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, New Jersey, USA; Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, New Brunswick, New Jersey, USA
| | - Chloe Azadegan
- W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, New Jersey, USA; Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, New Brunswick, New Jersey, USA
| | - Komal R Patel
- W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, New Jersey, USA; Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, New Brunswick, New Jersey, USA
| | - Joshua K Thackray
- Human Genetics Institute of New Jersey, Rutgers University, The State University of New Jersey, Piscataway, New Jersey, USA
| | - Manon Bohic
- W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, New Jersey, USA; Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, New Brunswick, New Jersey, USA
- Brain Health Institute, Rutgers University, Piscataway, New Jersey, USA
| | - Fumiyasu Imai
- Burke Neurological Institute, White Plains, New York City, New York, USA
- Brain and Mind Research Institute, Weill Cornell Medicine, New York City, New York, USA
| | - Simon O Ogundare
- Zuckerman Mind Brain Behavior Institute, Columbia University, New York, NY, USA; Department of Biological Sciences, Columbia University, New York City, New York, USA
| | - Yutaka Yoshida
- Burke Neurological Institute, White Plains, New York City, New York, USA
- Brain and Mind Research Institute, Weill Cornell Medicine, New York City, New York, USA
| | - Ishmail Abdus-Saboor
- Zuckerman Mind Brain Behavior Institute, Columbia University, New York, NY, USA; Department of Biological Sciences, Columbia University, New York City, New York, USA
| | - Eiman Azim
- Molecular Neurobiology Laboratory, Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Victoria E Abraira
- W.M. Keck Center for Collaborative Neuroscience, Rutgers University, The State University of New Jersey, New Brunswick, New Jersey, USA; Cell Biology and Neuroscience Department, Rutgers University, The State University of New Jersey, New Brunswick, New Jersey, USA
- Brain Health Institute, Rutgers University, Piscataway, New Jersey, USA
- Lead contact
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Schäufele TJ, Kolbinger A, Friedel J, Gurke R, Geisslinger G, Weigert A, Pierre S, Scholich K. Meloxicam treatment disrupts the regional structure of innate inflammation sites by targeting the pro-inflammatory effects of prostanoids. Br J Pharmacol 2024; 181:1051-1067. [PMID: 37823675 DOI: 10.1111/bph.16261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 08/10/2023] [Accepted: 09/29/2023] [Indexed: 10/13/2023] Open
Abstract
BACKGROUND AND PURPOSE Non-steroidal anti-inflammatory drugs (NSAIDs) are the most widely prescribed drugs in the world due to their analgesic, antipyretic and anti-inflammatory effects. However, NSAIDs inhibit prostanoid synthesis, interfering with their pro-inflammatory and anti-inflammatory functions and potentially prolonging acute inflammation. EXPERIMENTAL APPROACH We used high-content immunohistochemistry to define the impact of meloxicam treatment on spatially separated pro-inflammatory and anti-inflammatory processes during innate inflammation in mice induced by zymosan. This allowed us to determine the effect of meloxicam treatment on the organization of pro-inflammatory and anti-inflammatory microenvironments, thereby identifying relevant changes in immune cell localization, recruitment and activation. KEY RESULTS Meloxicam treatment reduced zymosan-induced thermal hypersensitivity at early time points but delayed its resolution. High-content immunohistochemistry revealed that the pro-inflammatory area was smaller after treatment, diminishing neutrophil recruitment, M1-like macrophage polarization, and especially phagocytosis by neutrophils and macrophages. The polarization of macrophages towards the M2-like anti-inflammatory phenotype was unaffected, and the number of anti-inflammatory eosinophils actually increased. CONCLUSION AND IMPLICATIONS High-content immunohistochemistry was able to identify relevant meloxicam-mediated effects on inflammatory processes based on alterations in the regional structure of inflammation sites. Meloxicam delayed the clearance of pathogens by inhibiting pro-inflammatory processes, causing prolonged inflammation. Our data suggest that the prescription of NSAIDs as a treatment during an acute pathogen-driven inflammation should be reconsidered in patients with compromised immune systems.
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Affiliation(s)
- Tim J Schäufele
- Institute of Clinical Pharmacology, Goethe University Frankfurt, Frankfurt, Germany
| | - Anja Kolbinger
- Institute of Clinical Pharmacology, Goethe University Frankfurt, Frankfurt, Germany
| | - Joschua Friedel
- Institute of Clinical Pharmacology, Goethe University Frankfurt, Frankfurt, Germany
| | - Robert Gurke
- Institute of Clinical Pharmacology, Goethe University Frankfurt, Frankfurt, Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Frankfurt, Germany
- Fraunhofer Cluster of Excellence Immune-Mediated Diseases CIMD, Frankfurt, Germany
| | - Gerd Geisslinger
- Institute of Clinical Pharmacology, Goethe University Frankfurt, Frankfurt, Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Frankfurt, Germany
- Fraunhofer Cluster of Excellence Immune-Mediated Diseases CIMD, Frankfurt, Germany
| | - Andreas Weigert
- Institute of Biochemistry I, Goethe University Frankfurt, Frankfurt, Germany
| | - Sandra Pierre
- Institute of Clinical Pharmacology, Goethe University Frankfurt, Frankfurt, Germany
| | - Klaus Scholich
- Institute of Clinical Pharmacology, Goethe University Frankfurt, Frankfurt, Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Frankfurt, Germany
- Fraunhofer Cluster of Excellence Immune-Mediated Diseases CIMD, Frankfurt, Germany
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40
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Albrecht PJ, Liu Y, Houk G, Ruggiero B, Banov D, Dockum M, Day A, Rice FL, Bassani G. Cutaneous targets for topical pain medications in patients with neuropathic pain: individual differential expression of biomarkers supports the need for personalized medicine. Pain Rep 2024; 9:e1119. [PMID: 38375092 PMCID: PMC10876238 DOI: 10.1097/pr9.0000000000001121] [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: 07/13/2023] [Revised: 08/30/2023] [Accepted: 11/07/2023] [Indexed: 02/21/2024] Open
Abstract
Introduction Numerous potential cutaneous targets exist for treating chronic pain with topically applied active pharmaceutical ingredients. This preliminary human skin tissue investigation was undertaken to characterize several key biomarkers in keratinocytes and provide proof-of-principle data to support clinical development of topical compounded formulations for peripheral neuropathic pain syndromes, such as postherpetic neuralgia (PHN). Objectives The study intended to identify objective biomarkers in PHN skin on a patient-by-patient personalized medicine platform. The totality of biopsy biomarker data can provide a tissue basis for directing individualized compounded topical preparations to optimize treatment efficacy. Methods Referencing 5 of the most common actives used in topical pain relief formulations (ketamine, gabapentin, clonidine, baclofen, and lidocaine), and 3 well-established cutaneous mediators (ie, neuropeptides, cannabinoids, and vanilloids), comprehensive immunolabeling was used to quantify receptor biomarkers in skin biopsy samples taken from ipsilateral (pain) and contralateral (nonpain) dermatomes of patients with PHN. Results Epidermal keratinocyte labeling patterns were significantly different among the cohort for each biomarker, consistent with potential mechanisms of action among keratinocytes. Importantly, the total biomarker panel indicates that the enriched PHN cohort contains distinct subgroups. Conclusion The heterogeneity of the cohort differences may explain studies that have not shown statistical group benefit from topically administered compounded therapies. Rather, the essential need for individual tissue biomarker evaluations is evident, particularly as a means to direct a more accurately targeted topical personalized medicine approach and generate positive clinical results.
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Affiliation(s)
| | - Yi Liu
- Professional Compounding Centers of America (PCCA), Houston, TX, USA
| | - George Houk
- Integrated Tissue Dynamics, LLC (INTiDYN), Rensselaer, NY, USA
| | - Beth Ruggiero
- Integrated Tissue Dynamics, LLC (INTiDYN), Rensselaer, NY, USA
| | - Daniel Banov
- Professional Compounding Centers of America (PCCA), Houston, TX, USA
| | - Marilyn Dockum
- Integrated Tissue Dynamics, LLC (INTiDYN), Rensselaer, NY, USA
| | - A.J. Day
- Professional Compounding Centers of America (PCCA), Houston, TX, USA
| | - Frank L. Rice
- Integrated Tissue Dynamics, LLC (INTiDYN), Rensselaer, NY, USA
| | - Gus Bassani
- Professional Compounding Centers of America (PCCA), Houston, TX, USA
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Xiao Y, Zhang S, Ren Q. The New Orientation of Postoperative Analgesia: Remote Ischemic Preconditioning. J Pain Res 2024; 17:1145-1152. [PMID: 38524690 PMCID: PMC10959302 DOI: 10.2147/jpr.s455127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 03/13/2024] [Indexed: 03/26/2024] Open
Abstract
Purpose of Review Postoperative analgesia is currently a significant topic in anesthesiology. Currently, the predominant approach for achieving multimodal analgesia involves the utilization of pharmacotherapy and regional anesthesia procedures. The primary objectives of this approach are to mitigate postoperative pain, enhance patient satisfaction, and diminish overall opioid usage. Nevertheless, there is a scarcity of research on the use of remote ischemia preconditioning aimed at mitigating postoperative pain. Recent Findings Transient stoppage of blood flow to an organ has been found to elicit remote ischemia preconditioning (RIPC), which serves as a potent intrinsic mechanism for protecting numerous organs. In addition to its established role in protecting against reperfusion injury, RIPC has recently been identified as having potential benefits in the context of postoperative analgesia. Summary In addition to traditional perioperative analgesia, RIPC provides perioperative analgesia and organ protection.
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Affiliation(s)
- Yunyu Xiao
- Department of Anesthesiology, Hangzhou Ninth People’s Hospital, Hangzhou, Zhejiang, 311225, People’s Republic of China
| | - Shaofeng Zhang
- Department of Anesthesiology, Hangzhou Ninth People’s Hospital, Hangzhou, Zhejiang, 311225, People’s Republic of China
| | - Qiusheng Ren
- Department of Anesthesiology, Hangzhou Ninth People’s Hospital, Hangzhou, Zhejiang, 311225, People’s Republic of China
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Starkweather AR, Xu W, Gnall KE, Emrich M, Garnsey CL, Magin ZE, Wu W, Fetta J, Groessl EJ, Park C. Testing Biological and Psychological Pathways of Emotion Regulation as a Primary Mechanism of Action in Yoga Interventions for Chronic Low Back Pain: Protocol for a Randomized Controlled Trial. JMIR Res Protoc 2024; 13:e56016. [PMID: 38483469 PMCID: PMC10979342 DOI: 10.2196/56016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/02/2024] [Accepted: 02/05/2024] [Indexed: 03/27/2024] Open
Abstract
BACKGROUND Interventions that promote adaptive emotion regulation (ER) skills reduce pain in patients with chronic pain; however, whether the effects of yoga practice on chronic low back pain (CLBP) are due to improvements in ER remains to be examined. OBJECTIVE This study will test whether the effects of yoga on CLBP (improved pain severity and interference) are mediated by improved ER, the extent to which effects are related to specific aspects of ER, and the role of pain sensitization as a mediator or moderator of effects. In this study, pain sensitization will be assessed by quantitative sensory testing and gene expression profiles to examine whether pain sensitization moderates yoga's effects on pain or whether yoga and ER abilities reduce pain sensitization, leading to decreased pain severity and interference. METHODS For this 2-arm parallel group blinded randomized controlled trial, we will enroll 204 adults with CLBP who will be randomized to receive the yoga (n=102) or a control stretching and strengthening (n=102) intervention, which are delivered via web-based synchronous biweekly 75-minute sessions over 12 weeks. Participants are encouraged to practice postures or exercises for 25 minutes on other days using accessible prerecorded practice videos that are sent to participants digitally. Participants will be assessed at 5 time points: baseline, midintervention (6 weeks), postintervention (12 weeks), and 3- and 6-month follow-ups. Assessments of ER, pain severity and interference, pain sensitivity including somatosensory and gene expression profiles, and physical strength and flexibility will be conducted at each visit. The fidelity of the interventions is assessed using a manualized checklist to evaluate recorded group sessions to ensure consistent instructor delivery. RESULTS The primary outcome will be the mean change in pain severity as measured by the Brief Pain Inventory-Short Form at 12 weeks. The primary mechanism of action is ER measured by change in the Difficulties in Emotion Regulation Scale total score. Secondary outcomes include pain sensitivity, physical strength and flexibility, pain interference, and quality of life. A mediation path analysis and series of moderated mediation path analyses will be conducted to test the study hypotheses. As of January 2024, we have enrolled 138 participants. We expect the study to be completed by May 2025. CONCLUSIONS The study will provide important data for evaluating whether improvements in ER are responsible for reduced pain perception and pain sensitivity as well as increased quality of life in the context of chronic pain. The study findings have important implications for determining the mechanism of action for yoga and possibly other mind-body interventions as nonpharmacological therapies for pain management. The results of the study will inform the content, delivery, and measures for intervention trials involving yoga as a modality for relieving pain and improving function. TRIAL REGISTRATION ClinicalTrials.gov NCT04678297; https://clinicaltrials.gov/study/NCT04678297. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID) DERR1-10.2196/56016.
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Affiliation(s)
- Angela R Starkweather
- Department of Biobehavioral Nursing Science, College of Nursing, University of Florida, Gainesville, FL, United States
| | - Wanli Xu
- School of Nursing, University of Connecticut, Storrs, CT, United States
| | - Katherine E Gnall
- Department of Psychological Sciences, University of Connecticut, Storrs, CT, United States
| | - Mariel Emrich
- Department of Psychological Sciences, University of Connecticut, Storrs, CT, United States
| | - Camille L Garnsey
- Department of Psychological Sciences, University of Connecticut, Storrs, CT, United States
| | - Zachary E Magin
- Department of Psychological Sciences, University of Connecticut, Storrs, CT, United States
| | - Weizi Wu
- School of Nursing, University of Connecticut, Storrs, CT, United States
| | - Joseph Fetta
- Department of Biobehavioral Nursing Science, College of Nursing, University of Florida, Gainesville, FL, United States
| | - Erik J Groessl
- Herbert Wertheim School of Public Health & Human Longevity Science, University of California San Diego, San Diego, CA, United States
- Veteran's Affairs San Diego Health System, San Diego, CA, United States
| | - Crystal Park
- Department of Psychological Sciences, University of Connecticut, Storrs, CT, United States
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Smith PR, Campbell ZT. RNA-binding proteins in pain. WILEY INTERDISCIPLINARY REVIEWS. RNA 2024; 15:e1843. [PMID: 38576117 PMCID: PMC11003723 DOI: 10.1002/wrna.1843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 03/13/2024] [Accepted: 03/14/2024] [Indexed: 04/06/2024]
Abstract
RNAs are meticulously controlled by proteins. Through direct and indirect associations, every facet in the brief life of an mRNA is subject to regulation. RNA-binding proteins (RBPs) permeate biology. Here, we focus on their roles in pain. Chronic pain is among the largest challenges facing medicine and requires new strategies. Mounting pharmacologic and genetic evidence obtained in pre-clinical models suggests fundamental roles for a broad array of RBPs. We describe their diverse roles that span RNA modification, splicing, stability, translation, and decay. Finally, we highlight opportunities to expand our understanding of regulatory interactions that contribute to pain signaling. This article is categorized under: RNA Interactions with Proteins and Other Molecules > Protein-RNA Interactions: Functional Implications Translation > Regulation RNA in Disease and Development > RNA in Disease.
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Affiliation(s)
- Patrick R. Smith
- Department of Anaesthesiology, University of Wisconsin-Madison, Madison, WI, USA 53792
| | - Zachary T. Campbell
- Department of Anaesthesiology, University of Wisconsin-Madison, Madison, WI, USA 53792
- Department of Biomolecular Chemistry, University of Wisconsin-Madison, Madison, WI, USA 53792
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Baghani M, Bolouri-Roudsari A, Askari R, Haghparast A. Orexin receptors in the hippocampal dentate gyrus modulated the restraint stress-induced analgesia in the animal model of chronic pain. Behav Brain Res 2024; 459:114772. [PMID: 37995966 DOI: 10.1016/j.bbr.2023.114772] [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: 08/31/2023] [Revised: 11/10/2023] [Accepted: 11/20/2023] [Indexed: 11/25/2023]
Abstract
Previous studies have shown that stressful stimuli induced an adaptive response of reduced nociception, known as stress-induced analgesia (SIA). Since orexin neuropeptides are involved in pain modulation, and orexin neurons, primarily located in the lateral hypothalamus (LH), project to various hippocampal regions, such as the dentate gyrus (DG), the current study aimed to examine the role of orexin receptors within the DG region in the restraint SIA in the animal model of chronic pain. One hundred-thirty adult male Wistar rats (230-250 g) were unilaterally implanted with a cannula above the DG region. Animals were given SB334867 or TCS OX2 29 (1, 3, 10, and 30 nmol, 0.5 µl/rat) into the DG region as orexin-1 receptor (OX1r) and orexin-2 receptor (OX2r) antagonists, respectively, five min before exposure to a 3-hour restraint stress (RS) period. Animals were then undergone the formalin test to assess pain-related behaviors as the animal model of chronic pain. The results showed that RS produces an analgesic response during the early and late phases of the formalin test. However, intra-DG microinjection of OX1r and OX2r antagonists attenuated the restraint SIA. OX2r antagonist was more potent than OX1r antagonist in the early phase of the formalin test, while OX1r antagonist was little more effective in the late phase. Predominantly, it could be concluded that the orexinergic system in the DG region might act as a potential endogenous pain control system and a novel target for treating stress-related disorders.
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Affiliation(s)
- Matin Baghani
- Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Physiology, Faculty of Medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Arad Bolouri-Roudsari
- Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Physiology, Faculty of Medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Reyhaneh Askari
- Neurobiology Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Abbas Haghparast
- Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran; School of Cognitive Sciences, Institute for Research in Fundamental Sciences, Tehran, Iran; Department of Basic Sciences, Iranian Academy of Medical Sciences, Tehran, Iran.
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Cha M, Bak H, Lee BH, Jang JH. Alleviation of peripheral sensitization by quadriceps insertion of cog polydioxanone filaments in knee osteoarthritis rats. Biochem Biophys Res Commun 2024; 698:149549. [PMID: 38266311 DOI: 10.1016/j.bbrc.2024.149549] [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: 12/12/2023] [Accepted: 01/17/2024] [Indexed: 01/26/2024]
Abstract
A recently established therapeutic strategy, involving the insertion of biodegradable cog polydioxanone filaments into the quadriceps muscles using the Muscle Enhancement and Support Therapy (MEST) device, has demonstrated significant efficacy in alleviating knee osteoarthritis (OA) pain. This study investigated changes in peripheral sensitization as the potential mechanism underlying MEST-induced pain relief in monoiodoacetate (MIA) induced OA rats. The results revealed that MEST treatment potently reduces MIA-induced sensitization of L3/L4 dorsal root ganglion (DRG) neurons, the primary nociceptor pathway for the knee joint. This reduction in DRG sensitization, as elucidated by voltage-sensitive dye imaging, is accompanied by a diminished overexpression of TRPA1 and NaV1.7, key nociceptor receptors involved in mechanical pain perception. Importantly, these observed alterations strongly correlate with a decrease in mechanically-evoked pain behaviors, providing compelling neurophysiological evidence that MEST treatment alleviates OA pain by suppressing peripheral sensitization.
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Affiliation(s)
- Myeounghoon Cha
- Department of Physiology, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Heyji Bak
- Department of Physiology, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Bae Hwan Lee
- Department of Physiology, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea; Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea.
| | - Jun Ho Jang
- R&D Center, OV MEDI Co., Ltd., Gongdan-ro, Gunpo, Gyeonggi-do, 15847, Republic of Korea.
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Xu Y, Liu D, Dai S, Zhang J, Guo Z, Liu X, Xiong L, Huang J. Stretchable and neuromorphic transistors for pain perception and sensitization emulation. MATERIALS HORIZONS 2024; 11:958-968. [PMID: 38099601 DOI: 10.1039/d3mh01766d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Pain perception nociceptors (PPN), an important type of sensory neuron, are capable of sending out alarm signals when the human body is exposed to destructive stimuli. Simulating the human ability to perceive the external environment and spontaneously avoid injury is a critical function of neural sensing of artificial intelligence devices. The demand for developing artificial PPN has subsequently increased. However, due to the application scenarios of bionic electronic devices such as human skin, electronic prostheses, and robot bodies, where a certain degree of surface deformation constantly occurs, the ideal artificial PPN should have the stretchability to adapt to real scenarios. Here, an organic semiconductor nanofiber artificial pain perception nociceptor (NAPPN) based on a pre-stretching strategy is demonstrated to achieve key pain aspects such as threshold, sensitization, and desensitization. Remarkably, while stretching up to 50%, the synaptic behaviors and injury warning ability of NAPPN can be retained. To verify the wearability of the device, NAPPN was attached to a curved human finger joint, on which PPN behaviors were successfully mimicked. This provides a promising strategy for realizing neural sensing function on either deformed or mobile electronic devices.
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Affiliation(s)
- Yutong Xu
- School of Materials Science and Engineering, Tongji University, Shanghai 201804, P. R. China.
| | - Dapeng Liu
- School of Materials Science and Engineering, Tongji University, Shanghai 201804, P. R. China.
| | - Shilei Dai
- School of Materials Science and Engineering, Tongji University, Shanghai 201804, P. R. China.
| | - Junyao Zhang
- School of Materials Science and Engineering, Tongji University, Shanghai 201804, P. R. China.
| | - Ziyi Guo
- School of Materials Science and Engineering, Tongji University, Shanghai 201804, P. R. China.
| | - Xu Liu
- School of Materials Science and Engineering, Tongji University, Shanghai 201804, P. R. China.
| | - Lize Xiong
- Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Key Laboratory of Anesthesiology and Brain Functional Modulation, Shanghai Fourth People's Hospital Affiliated to Tongji University, Tongji University, Shanghai, 200434, P. R. China.
| | - Jia Huang
- Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Key Laboratory of Anesthesiology and Brain Functional Modulation, Shanghai Fourth People's Hospital Affiliated to Tongji University, Tongji University, Shanghai, 200434, P. R. China.
- School of Materials Science and Engineering, Tongji University, Shanghai 201804, P. R. China.
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Gedeon JY, Pineda-Farias JB, Gold MS. In-Vivo Calcium Imaging of Sensory Neurons in the Rat Trigeminal Ganglion. J Vis Exp 2024:10.3791/65978. [PMID: 38407223 PMCID: PMC11139451 DOI: 10.3791/65978] [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] [Indexed: 02/27/2024] Open
Abstract
Genetically encoded calcium indicators (GECIs) enable imaging techniques to monitor changes in intracellular calcium in targeted cell populations. Their large signal-to-noise ratio makes GECIs a powerful tool for detecting stimulus-evoked activity in sensory neurons. GECIs facilitate population-level analysis of stimulus encoding with the number of neurons that can be studied simultaneously. This population encoding is most appropriately done in vivo. Dorsal root ganglia (DRG), which house the soma of sensory neurons innervating somatic and visceral structures below the neck, are used most extensively for in vivo imaging because these structures are accessed relatively easily. More recently, this technique was used in mice to study sensory neurons in the trigeminal ganglion (TG) that innervate oral and craniofacial structures. There are many reasons to study TG in addition to DRG, including the long list of pain syndromes specific to oral and craniofacial structures that appear to reflect changes in sensory neuron activity, such as trigeminal neuralgia. Mice are used most extensively in the study of DRG and TG neurons because of the availability of genetic tools. However, with differences in size, ease of handling, and potentially important species differences, there are reasons to study rat rather than mouse TG neurons. Thus, we developed an approach for imaging rat TG neurons in vivo. We injected neonatal pups (p2) intraperitoneally with an AAV encoding GCaMP6s, resulting in >90% infection of both TG and DRG neurons. TG was visualized in the adult following craniotomy and decortication, and changes in GCaMP6s fluorescence were monitored in TG neurons following stimulation of mandibular and maxillary regions of the face. We confirmed that increases in fluorescence were stimulus-evoked with peripheral nerve block. While this approach has many potential uses, we are using it to characterize the subpopulation(s) of TG neurons changed following peripheral nerve injury.
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Affiliation(s)
- Jeremy Y Gedeon
- Center for Neuroscience at the University of Pittsburgh; Department of Neurobiology, University of Pittsburgh School of Medicine; Pittsburgh Center for Pain Research, University of Pittsburgh
| | - Jorge Baruch Pineda-Farias
- Department of Neurobiology, University of Pittsburgh School of Medicine; Pittsburgh Center for Pain Research, University of Pittsburgh
| | - Michael S Gold
- Department of Neurobiology, University of Pittsburgh School of Medicine; Pittsburgh Center for Pain Research, University of Pittsburgh;
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de Souza S, Rosario Claudio J, Sim J, Inyang KE, Dagenais A, Monahan K, Lee B, Ramakrishnan H, Parmar V, Geron M, Scherrer G, Folger JK, Laumet G. Interleukin-10 signaling in somatosensory neurons controls CCL2 release and inflammatory response. Brain Behav Immun 2024; 116:193-202. [PMID: 38081433 PMCID: PMC10843623 DOI: 10.1016/j.bbi.2023.12.013] [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: 04/11/2023] [Revised: 11/29/2023] [Accepted: 12/08/2023] [Indexed: 12/17/2023] Open
Abstract
Appropriate regulation of the inflammatory response is essential for survival. Interleukin-10 (IL-10), a well-known anti-inflammatory cytokine, plays a major role in controlling inflammation. In addition to immune cells, we previously demonstrated that the IL-10 receptor (IL-10R1) is expressed in dorsal root ganglion sensory neurons. There is emerging evidence that these sensory neurons contribute to immunoregulation, and we hypothesized that IL-10 signaling in dorsal root ganglion (DRG) neurons facilitates the regulation of the inflammatory response. We showed that mice that lack IL-10R1 specifically on advillin-positive neurons have exaggerated blood nitric oxide levels, spinal microglia activation, and cytokine upregulation in the spinal cord, liver, and gut compared to wild-type (WT) counterparts in response to systemic lipopolysaccharide (LPS) injection. Lack of IL-10R1 in DRG and trigeminal ganglion (TG) neurons also increased circulating and DRG levels of proinflammatory C-C motif chemokine ligand 2 (CCL2). Interestingly, analysis of published scRNA-seq data revealed that Ccl2 and Il10ra are expressed by similar types of DRG neurons; nonpeptidergic P2X purinoceptor (P2X3R + ) neurons. In primary cultures of DRG neurons, we demonstrated that IL-10R1 inhibits the production of CCL2, but not that of the neuropeptides substance P and calcitonin-gene related peptide (CGRP). Furthermore, our data indicate that ablation of Transient receptor potential vanilloid (TRPV)1 + neurons does not impact the regulation of CCL2 production by IL-10. In conclusion, we showed that IL-10 binds to its receptor on sensory neurons to downregulate CCL2 and contribute to immunoregulation by reducing the attraction of immune cells by DRG neuron-derived CCL2. This is the first evidence that anti-inflammatory cytokines limit inflammation through direct binding to receptors on sensory neurons. Our data also add to the growing literature that sensory neurons have immunomodulatory functions.
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Affiliation(s)
- Sabrina de Souza
- Department of Physiology, Michigan State University, East Lansing, MI, USA
| | | | - Jaewon Sim
- Department of Physiology, Michigan State University, East Lansing, MI, USA
| | | | - Andrew Dagenais
- Department of Physiology, Michigan State University, East Lansing, MI, USA
| | - Karli Monahan
- Department of Physiology, Michigan State University, East Lansing, MI, USA
| | - Beenhwa Lee
- Department of Physiology, Michigan State University, East Lansing, MI, USA
| | | | - Visha Parmar
- Department of Physiology, Michigan State University, East Lansing, MI, USA
| | - Matan Geron
- Department of Cell Biology and Physiology, Department of Pharmacology, UNC Neuroscience Center, University of North Carolina, Chapel Hill, NC, USA
| | - Grégory Scherrer
- Department of Cell Biology and Physiology, Department of Pharmacology, UNC Neuroscience Center, University of North Carolina, Chapel Hill, NC, USA; New York Stem Cell Foundation - Robertson Investigator, University of North Carolina, Chapel Hill, NC, USA
| | - Joseph K Folger
- Department of Physiology, Michigan State University, East Lansing, MI, USA
| | - Geoffroy Laumet
- Department of Physiology, Michigan State University, East Lansing, MI, USA; Department of Physiology, Michigan State University, Interdisciplinary Science and Technology Building, 766 Service Rd, East Lansing, MI 48826, USA.
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49
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McAllister BB, Stokes-Heck S, Harding EK, van den Hoogen NJ, Trang T. Targeting Pannexin-1 Channels: Addressing the 'Gap' in Chronic Pain. CNS Drugs 2024; 38:77-91. [PMID: 38353876 DOI: 10.1007/s40263-024-01061-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/07/2024] [Indexed: 02/22/2024]
Abstract
Chronic pain complicates many diseases and is notoriously difficult to treat. In search of new therapeutic targets, pannexin-1 (Panx1) channels have sparked intense interest as a key mechanism involved in a variety of chronic pain conditions. Panx1 channels are transmembrane proteins that release ions and small molecules, such as adenosine triphosphate (ATP). They are expressed along important nodes of the pain pathway, modulating activity of diverse cell types implicated in the development and progression of chronic pain caused by injury or pathology. This review highlights advances that have unlocked the core structure and machinery controlling Panx1 function with a focus on understanding and treating chronic pain.
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Affiliation(s)
- Brendan B McAllister
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, T2N 4N1, Canada
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, AB, T2N 4N1, Canada
- Hotchkiss Brain Institute, University of Calgary, 3330 Hospital Drive, Calgary, AB, T2N 4N1, Canada
| | - Sierra Stokes-Heck
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, T2N 4N1, Canada
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, AB, T2N 4N1, Canada
- Hotchkiss Brain Institute, University of Calgary, 3330 Hospital Drive, Calgary, AB, T2N 4N1, Canada
| | - Erika K Harding
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, T2N 4N1, Canada
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, AB, T2N 4N1, Canada
- Hotchkiss Brain Institute, University of Calgary, 3330 Hospital Drive, Calgary, AB, T2N 4N1, Canada
| | - Nynke J van den Hoogen
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, T2N 4N1, Canada
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, AB, T2N 4N1, Canada
- Hotchkiss Brain Institute, University of Calgary, 3330 Hospital Drive, Calgary, AB, T2N 4N1, Canada
| | - Tuan Trang
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, T2N 4N1, Canada.
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, AB, T2N 4N1, Canada.
- Hotchkiss Brain Institute, University of Calgary, 3330 Hospital Drive, Calgary, AB, T2N 4N1, Canada.
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50
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Auer U, Kelemen Z, Vogl C, von Ritgen S, Haddad R, Torres Borda L, Gabmaier C, Breteler J, Jenner F. Development, refinement, and validation of an equine musculoskeletal pain scale. FRONTIERS IN PAIN RESEARCH 2024; 4:1292299. [PMID: 38312997 PMCID: PMC10837853 DOI: 10.3389/fpain.2023.1292299] [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: 09/11/2023] [Accepted: 12/08/2023] [Indexed: 02/06/2024] Open
Abstract
Musculoskeletal disease is a common cause of chronic pain that is often overlooked and inadequately treated, impacting the quality of life of humans and horses alike. Lameness due to musculoskeletal pain is prevalent in horses, but the perception of pain by owners is low compared with veterinary diagnosis. Therefore, this study aims to establish and validate a pain scale for chronic equine orthopaedic pain that is user-friendly for horse owners and veterinarians to facilitate the identification and monitoring of pain in horses. The newly developed musculoskeletal pain scale (MPS) was applied to 154 horses (mean age 20 ± 6.4 years SD) housed at an equine sanctuary, of which 128 (83%) suffered from chronic orthopaedic disease. To complete the MPS, the horses were observed and videotaped from a distance while at rest in their box or enclosure. In addition, they received a complete clinical and orthopaedic exam. The need for veterinary intervention to address pain (assessed and executed by the sanctuary independent from this study) was used as a longitudinal health outcome to determine the MPS's predictive validity. To determine the interrater agreement, the MPS was scored for a randomly selected subset of 30 horses by six additional blinded raters, three equine veterinary practitioners, and three experienced equestrians. An iterative process was used to refine the tool based on improvements in the MPS's correlation with lameness evaluated at the walk and trot, predictive validity for longitudinal health outcomes, and interrater agreement. The intraclass correlation improved from 0.77 of the original MPS to 0.88 of the refined version (95% confidence interval: 0.8-0.94). The refined MPS correlated significantly with lameness at the walk (r = 0.44, p = 0.001) and trot (r = 0.5, p < 0.0001). The refined MPS significantly differed between horses that needed veterinary intervention (mean MPS = 8.6) and those that did not (mean MPS = 5.0, p = 0.0007). In summary, the MPS showed good interrater repeatability between expert and lay scorers, significant correlation with lameness at the walk and trot, and good predictive validity for longitudinal health outcomes, confirming its ability to identify horses with orthopaedic health problems.
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Affiliation(s)
- Ulrike Auer
- Anaesthesiology and Perioperative Intensive Care Medicine Unit, Department of Companion Animals and Horses, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Zsofia Kelemen
- Equine Surgery Unit, Department of Companion Animals and Horses, University Equine Hospital, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Claus Vogl
- Department of Biomedical Sciences, Institute of Animal Breeding and Genetics, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Stephanie von Ritgen
- Anaesthesiology and Perioperative Intensive Care Medicine Unit, Department of Companion Animals and Horses, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Rabea Haddad
- Equine Surgery Unit, Department of Companion Animals and Horses, University Equine Hospital, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Laura Torres Borda
- Equine Surgery Unit, Department of Companion Animals and Horses, University Equine Hospital, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Christopher Gabmaier
- Anaesthesiology and Perioperative Intensive Care Medicine Unit, Department of Companion Animals and Horses, University of Veterinary Medicine Vienna, Vienna, Austria
| | - John Breteler
- Equine Surgery Unit, Department of Companion Animals and Horses, University Equine Hospital, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Florien Jenner
- Equine Surgery Unit, Department of Companion Animals and Horses, University Equine Hospital, University of Veterinary Medicine Vienna, Vienna, Austria
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