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Curatolo M, Chiu AP, Chia C, Ward A, Johnston SK, Klein RM, Henze DA, Zhu W, Raftery D. Multi-Omics Profiles of Chronic Low Back Pain and Fibromyalgia - Study Protocol. RESEARCH SQUARE 2024:rs.3.rs-4669838. [PMID: 39149502 PMCID: PMC11326421 DOI: 10.21203/rs.3.rs-4669838/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/17/2024]
Abstract
Background Chronic low back pain (CLBP) and fibromyalgia (FM) are leading causes of suffering, disability, and social costs. Current pharmacological treatments do not target molecular mechanisms driving CLBP and FM, and no validated biomarkers are available, hampering the development of effective therapeutics. Omics research has the potential to substantially advance our ability to develop mechanism-specific therapeutics by identifying pathways involved in the pathophysiology of CLBP and FM, and facilitate the development of diagnostic, predictive, and prognostic biomarkers. We will conduct a blood and urine multi-omics study in comprehensively phenotyped and clinically characterized patients with CLBP and FM. Our aims are to identify molecular pathways potentially involved in the pathophysiology of CLBP and FM that would shift the focus of research to the development of target-specific therapeutics, and identify candidate diagnostic, predictive, and prognostic biomarkers. Methods We are conducting a prospective cohort study of adults ≥18 years of age with CLBP (n=100) and FM (n=100), and pain-free controls (n=200). Phenotyping measures include demographics, medication use, pain-related clinical characteristics, physical function, neuropathiccomponents (quantitative sensory tests and DN4 questionnaire), pain facilitation (temporal summation), and psychosocial function as moderator. Blood and urine samples are collected to analyze metabolomics, lipidomics and proteomics. We will integrate the overall omics data to identify common mechanisms and pathways, and associate multi-omics profiles to pain-related clinical characteristics, physical function, indicators of neuropathic pain, and pain facilitation, with psychosocial variables as moderators. Discussion Our study addresses the need for a better understanding of the molecular mechanisms underlying chronic low back pain and fibromyalgia. Using a multi-omics approach, we hope to identify converging evidence for potential targets of future therapeutic developments, as well as promising candidate biomarkers for further investigation by biomarker validation studies. We believe that accurate patient phenotyping will be essential for the discovery process, as both conditions are characterized by high heterogeneity and complexity, likely rendering molecular mechanisms phenotype specific.
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Merriwether EN, Vanegas SM, Curado S, Zhou B, Mun CJ, Younger OS, Elbel B, Parikh M, Jay M. Changes in Widespread Pain After Surgical Weight Loss in Racialized Adults: A Secondary Analysis From a 2-Year Longitudinal Study. THE JOURNAL OF PAIN 2024:104625. [PMID: 39002743 DOI: 10.1016/j.jpain.2024.104625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 06/23/2024] [Accepted: 07/01/2024] [Indexed: 07/15/2024]
Abstract
Widespread pain (WP) is associated with reduced function and disability. Importantly, three-fourths of the approximately 42% of U.S. adults with obesity have WP. Moreover, rates of adult obesity are higher, and WP outcomes are worse in racialized non-Hispanic Black and Hispanic/Latino/a/X groups, potentially exacerbating existing pain disparities. Bariatric surgery significantly reduces weight and improves pain. However, recurrent or unresolved pain after bariatric surgery can hinder weight loss or facilitate weight regain. The current study conducted a secondary analysis of a longitudinal study of predictors and mechanisms of weight loss after bariatric surgery to examine the point prevalence of WP and pain trajectories 24 months post surgery. Our secondary aim was to examine the association between weight loss and pain characteristics. Our exploratory aim was to longitudinally examine racial differences in pain trajectories after bariatric surgery. Our results showed that point prevalence decreased after bariatric surgery. Additionally, significant improvements in pain trajectories occurred within the first 3 months post surgery with a pattern of pain reemergence beginning at 12 months post surgery. Hispanic/Latino/a/X participants reported a higher number of painful anatomical sites before bariatric surgery, and the rate of change in this domain for this group was faster compared with the racialized non-Hispanic Black participants. These findings suggest that pain improvements are most evident during the early stages of surgical weight loss in racialized populations of adults with WP. Thus, clinicians should routinely monitor patients' weight changes after bariatric surgery as they are likely to correspond to changes in their pain experiences. PERSPECTIVE: This article presents the prevalence and pain trajectories of racialized adults with WP after surgical weight loss. Clinicians should evaluate changes in the magnitude and spatial distribution of pain after significant weight change in these populations so that pain interventions can be prescribed with greater precision.
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Affiliation(s)
- Ericka N Merriwether
- Department of Physical Therapy, NYU Steinhardt School of Education, Culture, and Human Development, New York University, New York, New York; Department of Medicine, NYU Grossman School of Medicine, New York University, New York, New York.
| | - Sally M Vanegas
- Department of Medicine, NYU Grossman School of Medicine, New York University, New York, New York
| | - Silvia Curado
- Department of Pathology, NYU Grossman School of Medicine, New York University, New York, New York; Department of Cell Biology, NYU Grossman School of Medicine, New York University, New York, New York
| | - Boyan Zhou
- Department of Population Health, NYU Grossman School of Medicine, New York University, New York, New York
| | - Chung Jung Mun
- Edson College of Nursing and Health Innovation, Arizona State University, Phoenix, Arizona; Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, Maryland
| | - Olivia S Younger
- Department of Physical Therapy, NYU Steinhardt School of Education, Culture, and Human Development, New York University, New York, New York
| | - Brian Elbel
- Department of Population Health, NYU Grossman School of Medicine, New York University, New York, New York; NYU Wagner Graduate School of Public Service, New York University, New York, New York
| | - Manish Parikh
- Department of Surgery, NYU Grossman School of Medicine, New York University, New York, New York; Department of Surgery, New York City Health and Hospitals/Bellevue Hospital Center, New York, New York
| | - Melanie Jay
- Department of Medicine, NYU Grossman School of Medicine, New York University, New York, New York; Department of Population Health, NYU Grossman School of Medicine, New York University, New York, New York; New York Harbor Veterans Affairs, New York, New York
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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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Zhao L, Tao X, Wang K, Song Y, Zhang B, Yang L, Wang Z. Astaxanthin alleviates fibromyalgia pain and depression via NLRP3 inflammasome inhibition. Biomed Pharmacother 2024; 176:116856. [PMID: 38852510 DOI: 10.1016/j.biopha.2024.116856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 05/27/2024] [Accepted: 06/03/2024] [Indexed: 06/11/2024] Open
Abstract
Fibromyalgia is characterised by widespread chronic pain and is often accompanied by comorbidities such as sleep disorders, anxiety, and depression. Because it is often accompanied by many adverse symptoms and lack of effective treatment, it is important to search for the pathogenesis and treatment of fibromyalgia. Astaxanthin, a carotenoid pigment known for its anti-inflammatory and antioxidant properties, has demonstrated effective analgesic effects in neuropathic pain. However, its impact on fibromyalgia remains unclear. Therefore, in this study, we constructed a mouse model of fibromyalgia and investigated the effect of astaxanthin on chronic pain and associated symptoms through multiple intragastrical injections. We conducted behavioural assessments to detect pain and depression-like states in mice, recorded electroencephalograms to monitor sleep stages, examined c-Fos activation in the anterior cingulate cortex, measured activation of spinal glial cells, and assessed levels of inflammatory factors in the brain and spinal cord, including interleukin (IL)-1β, IL-6, and tumour necrosis factor- α(TNF-α).Additionally, we analysed the expression levels of IL-6, IL-10, NOD-like receptor thermal protein domain associated protein 3 (NLRP3), Apoptosis-associated speck-like protein containing CARD, and Caspase-1 proteins. The findings revealed that astaxanthin significantly ameliorated mechanical and thermal pain in mice with fibromyalgia and mitigated sleep disorders and depressive-like symptoms induced by pain. A potential mechanism underlying these effects is the anti-inflammatory action of astaxanthin, likely mediated through the inhibition of the NLRP3 inflammasome, which could be one of the pathways through which astaxanthin alleviates fibromyalgia. In conclusion, our study suggests that astaxanthin holds promise as a potential analgesic medication for managing fibromyalgia and its associated symptoms.
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Affiliation(s)
- Lin Zhao
- Department of Pain, The First Hospital of China Medical University, Shenyang 110001, People's Republic of China
| | - Xueshu Tao
- Department of Pain, The First Hospital of China Medical University, Shenyang 110001, People's Republic of China
| | - Kunpeng Wang
- Department of Pain, The First Hospital of China Medical University, Shenyang 110001, People's Republic of China
| | - Yuqing Song
- Department of Pain, The First Hospital of China Medical University, Shenyang 110001, People's Republic of China
| | - Bohan Zhang
- Department of Pain, The First Hospital of China Medical University, Shenyang 110001, People's Republic of China
| | - Li Yang
- Department of Anesthesiology, The Fourth Affiliated Hospital of China Medical University, Shenyang 110032, People's Republic of China.
| | - Zhilin Wang
- Department of Pain, The First Hospital of China Medical University, Shenyang 110001, People's Republic of China.
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Paroli M, Gioia C, Accapezzato D, Caccavale R. Inflammation, Autoimmunity, and Infection in Fibromyalgia: A Narrative Review. Int J Mol Sci 2024; 25:5922. [PMID: 38892110 PMCID: PMC11172859 DOI: 10.3390/ijms25115922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 05/24/2024] [Accepted: 05/27/2024] [Indexed: 06/21/2024] Open
Abstract
Fibromyalgia (FM) is a chronic disease characterized by widespread musculoskeletal pain of unknown etiology. The condition is commonly associated with other symptoms, including fatigue, sleep disturbances, cognitive impairment, and depression. For this reason, FM is also referred to as FM syndrome. The nature of the pain is defined as nociplastic according to the latest international classification and is characterized by altered nervous sensitization both centrally and peripherally. Psychosocial conditions have traditionally been considered critical in the genesis of FM. However, recent studies in animal models and humans have provided new evidence in favor of an inflammatory and/or autoimmune pathogenesis. In support of this hypothesis are epidemiological data of an increased female prevalence, similar to that of autoimmune diseases, and the frequent association with immune-mediated inflammatory disorders. In addition, the observation of an increased incidence of this condition during long COVID revived the hypothesis of an infectious pathogenesis. This narrative review will, therefore, discuss the evidence supporting the immune-mediated pathogenesis of FM in light of the most current data available in the literature.
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Affiliation(s)
- Marino Paroli
- Department of Clinical, Internal, Anesthesiologic and Cardiovascular Sciences, Sapienza University di Roma, 00185 Rome, Italy; (C.G.); (D.A.); (R.C.)
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Rodríguez-Palma EJ, Huerta de la Cruz S, Islas-Espinoza AM, Castañeda-Corral G, Granados-Soto V, Khanna R. Nociplastic pain mechanisms and toll-like receptors as promising targets for its management. Pain 2024:00006396-990000000-00571. [PMID: 38595206 DOI: 10.1097/j.pain.0000000000003238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 02/29/2024] [Indexed: 04/11/2024]
Abstract
ABSTRACT Nociplastic pain, characterized by abnormal pain processing without an identifiable organic cause, affects a significant portion of the global population. Unfortunately, current pharmacological treatments for this condition often prove ineffective, prompting the need to explore new potential targets for inducing analgesic effects in patients with nociplastic pain. In this context, toll-like receptors (TLRs), known for their role in the immune response to infections, represent promising opportunities for pharmacological intervention because they play a relevant role in both the development and maintenance of pain. Although TLRs have been extensively studied in neuropathic and inflammatory pain, their specific contributions to nociplastic pain remain less clear, demanding further investigation. This review consolidates current evidence on the connection between TLRs and nociplastic pain, with a specific focus on prevalent conditions like fibromyalgia, stress-induced pain, sleep deprivation-related pain, and irritable bowel syndrome. In addition, we explore the association between nociplastic pain and psychiatric comorbidities, proposing that modulating TLRs can potentially alleviate both pain syndromes and related psychiatric disorders. Finally, we discuss the potential sex differences in TLR signaling, considering the higher prevalence of nociplastic pain among women. Altogether, this review aims to shed light on nociplastic pain, its underlying mechanisms, and its intriguing relationship with TLR signaling pathways, ultimately framing the potential therapeutic role of TLRs in addressing this challenging condition.
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Affiliation(s)
- Erick J Rodríguez-Palma
- Department of Pharmacology and Therapeutics, College of Medicine, University of Florida, Gainesville, FL, United States
- Neurobiology of Pain Laboratory, Departamento de Farmacobiología, Cinvestav, South Campus, Mexico City, Mexico
| | | | - Ana M Islas-Espinoza
- Neurobiology of Pain Laboratory, Departamento de Farmacobiología, Cinvestav, South Campus, Mexico City, Mexico
| | | | - Vinicio Granados-Soto
- Neurobiology of Pain Laboratory, Departamento de Farmacobiología, Cinvestav, South Campus, Mexico City, Mexico
| | - Rajesh Khanna
- Department of Pharmacology and Therapeutics, College of Medicine, University of Florida, Gainesville, FL, United States
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7
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Reel JM, Abbadi J, Cox MA. T cells at the interface of neuroimmune communication. J Allergy Clin Immunol 2024; 153:894-903. [PMID: 37952833 PMCID: PMC10999355 DOI: 10.1016/j.jaci.2023.10.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/12/2023] [Accepted: 10/24/2023] [Indexed: 11/14/2023]
Abstract
The immune system protects the host from infection and works to heal damaged tissue after infection or injury. There is increasing evidence that the immune system and the nervous system work in concert to achieve these goals. The sensory nervous system senses injury, infection, and inflammation, which results in a direct pain signal. Direct activation of peripheral sensory nerves can drive an inflammatory response in the skin. Immune cells express receptors for numerous transmitters released from sensory and autonomic nerves, which allows the nervous system to communicate directly with the immune system. This communication is bidirectional because immune cells can also produce neurotransmitters. Both innate and adaptive immune cells respond to neuronal signaling, but T cells appear to be at the helm of neuroimmune communication.
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Affiliation(s)
- Jessica M Reel
- Department of Microbiology and Immunology, University of Oklahoma Health Sciences Center, Oklahoma City, Okla
| | - Jumana Abbadi
- Department of Microbiology and Immunology, University of Oklahoma Health Sciences Center, Oklahoma City, Okla
| | - Maureen A Cox
- Department of Microbiology and Immunology, University of Oklahoma Health Sciences Center, Oklahoma City, Okla; Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, Okla.
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8
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Day KS, Rempel L, Rossi FMV, Theret M. Origins and functions of eosinophils in two non-mucosal tissues. Front Immunol 2024; 15:1368142. [PMID: 38585275 PMCID: PMC10995313 DOI: 10.3389/fimmu.2024.1368142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 02/26/2024] [Indexed: 04/09/2024] Open
Abstract
Eosinophils are a type of granulocyte named after the presence of their eosin-stained granules. Traditionally, eosinophils have been best known to play prominent roles in anti-parasitic responses and mediating allergic reactions. Knowledge of their behaviour has expanded with time, and they are now recognized to play integral parts in the homeostasis of gastrointestinal, respiratory, skeletal muscle, adipose, and connective tissue systems. As such, they are implicated in a myriad of pathologies, and have been the target of several medical therapies. This review focuses on the lifespan of eosinophils, from their origins in the bone marrow, to their tissue-resident role. In particular, we wish to highlight the functions of eosinophils in non-mucosal tissues with skeletal muscle and the adipose tissues as examples, and to discuss the current understanding of their participation in diseased states in these tissues.
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Affiliation(s)
- Katie S. Day
- Department of Medical Genetics, School of Biomedical Engineering, University of British Columbia, Vancouver, BC, Canada
- Department of Biology and Biochemistry, University of Bath, Bath, United Kingdom
| | - Lucas Rempel
- Department of Medical Genetics, School of Biomedical Engineering, University of British Columbia, Vancouver, BC, Canada
| | - Fabio M. V. Rossi
- Department of Medical Genetics, School of Biomedical Engineering, University of British Columbia, Vancouver, BC, Canada
| | - Marine Theret
- Department of Medical Genetics, School of Biomedical Engineering, University of British Columbia, Vancouver, BC, Canada
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Mikkelsen K, Dargahi N, Fraser S, Apostolopoulos V. High-Dose Vitamin B6 (Pyridoxine) Displays Strong Anti-Inflammatory Properties in Lipopolysaccharide-Stimulated Monocytes. Biomedicines 2023; 11:2578. [PMID: 37761018 PMCID: PMC10526783 DOI: 10.3390/biomedicines11092578] [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: 08/24/2023] [Revised: 09/16/2023] [Accepted: 09/18/2023] [Indexed: 09/29/2023] Open
Abstract
Vitamin B6 is shown to have anti-inflammatory properties, which makes it an interesting nutraceutical agent. Vitamin B6 deficiency is well established as a contributor to inflammatory-related conditions, whilst B6 supplementation can reverse these inflammatory effects. There is less information available regarding the effects of high-dose vitamin B6 supplementation as a therapeutic agent. This study set out to examine the effects of high-dose vitamin B6 on an LPS-stimulated monocyte/macrophage cell population via an analysis of protein and gene expression using an RT2 profiler PCR array for Human Innate and Adaptive Immune responses. It was identified that high-dose vitamin B6 has a global anti-inflammatory effect on lipopolysaccharide-induced inflammation in monocyte/macrophage cells by downregulating the key broad-spectrum inflammatory mediators CCL2, CCL5, CXCL2, CXCL8, CXCL10, CCR4, CCR5, CXCR3, IL-1β, IL-5, IL-6, IL-10, IL-18, IL-23-a, TNF-α, CSF2, DDX58, NLRP3, NOD1, NOD2, TLR-1 -2 -4 -5 -7 -8 -9, MYD88, C3, FOXP3, STAT1, STAT3, STAT6, LYZ, CASP-1, CD4, HLA-E, MAPK1, MAPK8 MPO, MX-1, NF-κβ, NF-κβ1A, CD14, CD40, CD40LG, CD86, Ly96, ICAM1, IRF3, ITGAM, and IFCAM2. The outcomes of this study show promise regarding vitamin B6 within the context of a potent broad-spectrum anti-inflammatory mediator and could prove useful as an adjunct treatment for inflammatory-related diseases.
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Affiliation(s)
| | | | | | - Vasso Apostolopoulos
- Immunology and Translational Research Group, Institute for Health and Sport, Werribee Campus, Victoria University, Melbourne, VIC 3030, Australia; (K.M.); (N.D.); (S.F.)
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Lesnak JB, Mazhar K, Price TJ. Neuroimmune Mechanisms Underlying Post-acute Sequelae of SARS-CoV-2 (PASC) Pain, Predictions from a Ligand-Receptor Interactome. Curr Rheumatol Rep 2023; 25:169-181. [PMID: 37300737 PMCID: PMC10256978 DOI: 10.1007/s11926-023-01107-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/31/2023] [Indexed: 06/12/2023]
Abstract
PURPOSE OF REVIEW Individuals with post-acute sequelae of SARS-CoV-2 (PASC) complain of persistent musculoskeletal pain. Determining how COVID-19 infection produces persistent pain would be valuable for the development of therapeutics aimed at alleviating these symptoms. RECENT FINDINGS To generate hypotheses regarding neuroimmune interactions in PASC, we used a ligand-receptor interactome to make predictions about how ligands from PBMCs in individuals with COVID-19 communicate with dorsal root ganglia (DRG) neurons to induce persistent pain. In a structured literature review of -omics COVID-19 studies, we identified ligands capable of binding to receptors on DRG neurons, which stimulate signaling pathways including immune cell activation and chemotaxis, the complement system, and type I interferon signaling. The most consistent finding across immune cell types was an upregulation of genes encoding the alarmins S100A8/9 and MHC-I. This ligand-receptor interactome, from our hypothesis-generating literature review, can be used to guide future research surrounding mechanisms of PASC-induced pain.
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Affiliation(s)
- Joseph B Lesnak
- School for Behavioral and Brain Sciences and Center for Advanced Pain Studies, University of Texas at Dallas, BSB 14.102G, Richardson, TX, 75080, USA
| | - Khadijah Mazhar
- School for Behavioral and Brain Sciences and Center for Advanced Pain Studies, University of Texas at Dallas, BSB 14.102G, Richardson, TX, 75080, USA
| | - Theodore J Price
- School for Behavioral and Brain Sciences and Center for Advanced Pain Studies, University of Texas at Dallas, BSB 14.102G, Richardson, TX, 75080, USA.
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Yin Z, Chen J, Xia M, Zhang X, Li Y, Chen Z, Bao Q, Zhong W, Yao J, Wu K, Zhao L, Liang F. Assessing causal relationship between circulating cytokines and age-related neurodegenerative diseases: a bidirectional two-sample Mendelian randomization analysis. Sci Rep 2023; 13:12325. [PMID: 37516812 PMCID: PMC10387057 DOI: 10.1038/s41598-023-39520-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 07/26/2023] [Indexed: 07/31/2023] Open
Abstract
Numerous studies have reported that circulating cytokines (CCs) are linked to age-related neurodegenerative diseases (ANDDs); however, there is a lack of systematic investigation for the causal association. A two-sample bidirectional Mendelian Randomisation (MR) method was utilized to evaluate the causal effect. We applied genetic variants correlated with concentrations of CCs from a genome-wide association study meta-analysis (n = 8293) as instrumental variables. Summary data of three major ANDDs [Alzheimer's disease (AD), Parkinson's disease (PD), and Amyotrophic lateral sclerosis (ALS)] were identified from the IEU OpenGWAS platform (n = 627, 266). Inverse-variance weighted method is the main approach to analyse causal effect, and MR results are verified by several sensitivity and pleiotropy analyses. In directional MR, it suggested that several CCs were nominally correlated with the risk of ANDDs, with a causal odds ratio (OR) of Interleukin (IL)-5 of 0.909 for AD; OR of IL-2 of 1.169 for PD; and OR of Beta nerve growth factor of 1.142 for ALS). In reverse MR, there were some suggestively causal effects of ANDDs on CCs (AD on increased Basic fibroblast growth factor and IL-12 and decreased Stem cell growth factor beta; PD on decreased Monokine induced by interferon-gamma; ALS on decreased Basic fibroblast growth factor and IL-17). The findings were stable across sensitivity and pleiotropy analyses. However, after Bonferroni correction, there is no statistically significant association between CCs and ANDDs. Through the genetic epidemiological approach, our study assessed the role and presented possible causal associations between CCs and ANDDs. Further studies are warranted to verify the causal associations.
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Affiliation(s)
- Zihan Yin
- School of Acu-Mox and Tuina, Chengdu University of Traditional Chinese Medicine, 37 Shierqiao Road, Chengdu, 610075, Sichuan, China
- Acupuncture Clinical Research Center of Sichuan Province, Chengdu, China
| | - Jiao Chen
- School of Acu-Mox and Tuina, Chengdu University of Traditional Chinese Medicine, 37 Shierqiao Road, Chengdu, 610075, Sichuan, China
- Acupuncture Clinical Research Center of Sichuan Province, Chengdu, China
| | - Manze Xia
- School of Acu-Mox and Tuina, Chengdu University of Traditional Chinese Medicine, 37 Shierqiao Road, Chengdu, 610075, Sichuan, China
- Acupuncture Clinical Research Center of Sichuan Province, Chengdu, China
| | - Xinyue Zhang
- School of Acu-Mox and Tuina, Chengdu University of Traditional Chinese Medicine, 37 Shierqiao Road, Chengdu, 610075, Sichuan, China
- Acupuncture Clinical Research Center of Sichuan Province, Chengdu, China
| | - Yaqin Li
- School of Acu-Mox and Tuina, Chengdu University of Traditional Chinese Medicine, 37 Shierqiao Road, Chengdu, 610075, Sichuan, China
| | - Zhenghong Chen
- School of Acu-Mox and Tuina, Chengdu University of Traditional Chinese Medicine, 37 Shierqiao Road, Chengdu, 610075, Sichuan, China
- Acupuncture Clinical Research Center of Sichuan Province, Chengdu, China
| | - Qiongnan Bao
- School of Acu-Mox and Tuina, Chengdu University of Traditional Chinese Medicine, 37 Shierqiao Road, Chengdu, 610075, Sichuan, China
- Acupuncture Clinical Research Center of Sichuan Province, Chengdu, China
| | - Wanqi Zhong
- School of Acu-Mox and Tuina, Chengdu University of Traditional Chinese Medicine, 37 Shierqiao Road, Chengdu, 610075, Sichuan, China
- Acupuncture Clinical Research Center of Sichuan Province, Chengdu, China
| | - Jin Yao
- School of Acu-Mox and Tuina, Chengdu University of Traditional Chinese Medicine, 37 Shierqiao Road, Chengdu, 610075, Sichuan, China
- Acupuncture Clinical Research Center of Sichuan Province, Chengdu, China
| | - Kexin Wu
- School of Acu-Mox and Tuina, Chengdu University of Traditional Chinese Medicine, 37 Shierqiao Road, Chengdu, 610075, Sichuan, China
- Acupuncture Clinical Research Center of Sichuan Province, Chengdu, China
| | - Ling Zhao
- School of Acu-Mox and Tuina, Chengdu University of Traditional Chinese Medicine, 37 Shierqiao Road, Chengdu, 610075, Sichuan, China.
- Acupuncture Clinical Research Center of Sichuan Province, Chengdu, China.
| | - Fanrong Liang
- School of Acu-Mox and Tuina, Chengdu University of Traditional Chinese Medicine, 37 Shierqiao Road, Chengdu, 610075, Sichuan, China.
- Acupuncture Clinical Research Center of Sichuan Province, Chengdu, China.
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Erden E, Turk AC, Erden E. Can the monocyte-to-HDL ratio be used as an inflammation marker in patients with fibromyalgia syndrome? Niger J Clin Pract 2023; 26:998-1004. [PMID: 37635586 DOI: 10.4103/njcp.njcp_875_22] [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] [Indexed: 08/29/2023]
Abstract
Background and Aim The monocyte-to-high-density lipoprotein (HDL) ratio (MHR) may be used as a marker of inflammation and oxidative stress. This study aimed to evaluate the use of MHR and platelet markers in patients with fibromyalgia syndrome (FMS) and demonstrate MHR's relationship with inflammation, the Fibromyalgia Impact Questionnaire (FIQ), and quality of life. Materials and Methods Ninety FMS patients and 90 healthy controls, whose clinical and laboratory evaluations were performed simultaneously, were included in the study. The monocyte, platelet, HDL, MHR, C-reactive protein (CRP), erythrocyte sedimentation rate (ESR), mean platelet volume (MPV), and platelet distribution width (PDW) values of all patients were evaluated. The quality of life of the participants was assessed using the FIQ and their general health using the health assessment questionnaire (HAQ). Results Age, body mass index (BMI), and marital status distribution were similar in both groups. The FMS patients had a mean disease duration of 11.29 ± 2.62 months. The median monocyte, platelet, MPV, visual analog scale (VAS), FIQ, and HAQ values and the mean MHR of the FMS patients were significantly higher than the control group, while the mean HDL level was significantly lower (P < 0.05). There was a weak negative correlation between the MPV and HAQ score and the PDW and HAQ score (rs = -0.225, P = 0.042 and rs = -0.249, P = 0.024, respectively), whereas no correlation was detected between the MHR and the FIQ and HAQ scores in FMS patients. According to the receiver operating characteristic curve analysis, MHR had prediction of FMS (P = 0.002; sensitivity = 0.63, specificity = 0.50, cut-off point ≥8.4). Conclusions Our results suggest that the monocyte, platelet, HDL, MHR, and MPV parameters can be used in the evaluation of inflammation in FMS patients.
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Affiliation(s)
- E Erden
- Department of Physical Medicine and Rehabilitation, Hitit University, Faculty of Medicine, Çorum, Turkey
| | - A C Turk
- Department of Physical Medicine and Rehabilitation, Hitit University, Faculty of Medicine, Çorum, Turkey
| | - E Erden
- Department of Physical Medicine and Rehabilitation, Hitit University Erol Olçok Education and Research Hospital Çorum, Turkey
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13
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Atta AA, Ibrahim WW, Mohamed AF, Abdelkader NF. Microglia polarization in nociplastic pain: mechanisms and perspectives. Inflammopharmacology 2023; 31:1053-1067. [PMID: 37069462 DOI: 10.1007/s10787-023-01216-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 03/27/2023] [Indexed: 04/19/2023]
Abstract
Nociplastic pain is the third classification of pain as described by the International Association for the Study of Pain (IASP), in addition to the neuropathic and nociceptive pain classes. The main pathophysiological mechanism for developing nociplastic pain is central sensitization (CS) in which pain amplification and hypersensitivity occur. Fibromyalgia is the prototypical nociplastic pain disorder, characterized by allodynia and hyperalgesia. Much scientific data suggest that classical activation of microglia in the spinal cord mediates neuroinflammation which plays an essential role in developing CS. In this review article, we discuss the impact of microglia activation and M1/M2 polarization on developing neuroinflammation and nociplastic pain, besides the molecular mechanisms engaged in this process. In addition, we mention the impact of microglial modulators on M1/M2 microglial polarization that offers a novel therapeutic alternative for the management of nociplastic pain disorders. Illustrating the mechanisms underlying microglia activation in central sensitization and nociplastic pain. LPS lipopolysaccharide, TNF-α tumor necrosis factor-α, INF-γ Interferon gamma, ATP adenosine triphosphate, 49 P2Y12/13R purinergic P2Y 12/13 receptor, P2X4/7R purinergic P2X 4/7 receptor, SP Substance P, NK-1R Neurokinin 1 receptor, CCL2 CC motif ligand 2, CCR2 CC motif ligand 2 receptor, CSF-1 colony-stimulating factor 1, CSF-1R colony-stimulating factor 1 receptor, CX3CL1 CX3C motif ligand 1, CX3XR1 CX3C motif ligand 1 receptor, TLR toll-like receptor, MAPK mitogen-activated protein kinases, JNK jun N-terminal kinase, ERK extracellular signal-regulated kinase, iNOS Inducible nitric oxide synthase, IL-1β interleukin-1β, IL-6 interleukin-6, BDNF brain-derived neurotrophic factor, GABA γ-Aminobutyric acid, GABAR γ-Aminobutyric acid receptor, NMDAR N-methyl-D-aspartate receptor, AMPAR α-amino-3-hydroxy-5-methyl-4-isoxazolepropi-onic acid receptor, IL-4 interleukin-4, IL-13 interleukin-13, IL-10 interleukin-10, Arg-1 Arginase 1, FGF fibroblast growth factor, GDNF glial cell-derived neurotrophic factor, IGF-1 insulin-like growth factor-1, NGF nerve growth factor, CD Cluster of differentiation.
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Affiliation(s)
- Ahd A Atta
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Kasr El-Aini St., Cairo, 11562, Egypt.
| | - Weam W Ibrahim
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Kasr El-Aini St., Cairo, 11562, Egypt
| | - Ahmed F Mohamed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Kasr El-Aini St., Cairo, 11562, Egypt
| | - Noha F Abdelkader
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Kasr El-Aini St., Cairo, 11562, Egypt
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14
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Lenert ME, Szabo-Pardi TA, Burton MD. Regulatory T-cells and IL-5 mediate pain outcomes in a preclinical model of chronic muscle pain. Mol Pain 2023; 19:17448069221110691. [PMID: 35712872 PMCID: PMC9926397 DOI: 10.1177/17448069221110691] [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] [Indexed: 11/15/2022] Open
Abstract
Fibromyalgia (FM) is a chronic musculoskeletal pain disorder primarily diagnosed in women. Historically, clinical literature focusing on cytokines and immune cells has been inconsistent. However, recent key studies show several layers of immune system dysfunction in FM. Preclinically, studies of the immune system have focused on monocytes with little focus on other immune cells. Importantly, T-cells are implicated in the development and resolution of chronic pain states, particularly in females. Our previous work showed that monocytes from women with FM produced more interleukin 5 (IL-5) and systemic treatment of IL-5 reversed mechanical hypersensitivity in a preclinical model of FM. Typically, IL-5 is produced by TH2-cells, so in this study we assessed T-cell populations and cytokine production in female mice using the acid-induced chronic muscle pain model of FM before and after treatment with IL-5. Two unilateral injections of pH4.0 saline, five days apart, into the gastrocnemius muscle induce long-lasting widespread pain. We found that peripheral (blood) regulatory Thelper-cells (CD4+ FOXP3+) are downregulated in pH4.0-injected mice, with no differences in tissue (lymph nodes) or CD8+ T-cell populations. We tested the analgesic properties of IL-5 using a battery of spontaneous and evoked pain measures. Interestingly, IL-5 treatment induced place preference in mice previously injected with pH4.0 saline. Mice treated with IL-5 show limited changes in T-cell populations compared to controls, with a rescue in regulatory T-cells which positively correlates with improved mechanical hypersensitivity. The experiments in this study provide novel evidence that downregulation of regulatory T-cells play a role in chronic muscle pain pathology in the acidic saline model of FM and that IL-5 signaling is a promising target for future development of therapeutics.
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Affiliation(s)
| | | | - Michael D Burton
- Michael D Burton, Neuroimmunology and Behavior Lab, Department of Neuroscience, School of Brain and Behavioral Science, Center for Advanced Pain Studies, University of Texas at Dallas, 800 W. Campbell Rd., BSB 10.546, Richardson, TX 75080, USA.
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15
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Lesnak JB, Berardi G, Sluka KA. Influence of routine exercise on the peripheral immune system to prevent and alleviate pain. NEUROBIOLOGY OF PAIN (CAMBRIDGE, MASS.) 2023; 13:100126. [PMID: 37179769 PMCID: PMC10173010 DOI: 10.1016/j.ynpai.2023.100126] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/17/2023] [Accepted: 03/18/2023] [Indexed: 05/15/2023]
Abstract
Routine physical activity reduces the onset of pain and exercise is a first line treatment for individuals who develop chronic pain. In both preclinical and clinical research regular exercise (routine exercise sessions) produces pain relief through multiple mechanisms such as alterations in the central and peripheral nervous system. More recently, it has been appreciated that exercise can also alter the peripheral immune system to prevent or reduce pain. In animal models, exercise can alter the immune system at the site of injury or pain model induction, in the dorsal root ganglia, and systemically throughout the body to produce analgesia. Most notably exercise shows the ability to dampen the presence of pro-inflammatory immune cells and cytokines at these locations. Exercise decreases M1 macrophages and the cytokines IL-6, IL-1β, and TFNα, while increasing M2 macrophages and the cytokines IL-10, IL-4, and IL-1ra. In clinical research, a single bout of exercise produces an acute inflammatory response, however repeated training can lead to an anti-inflammatory immune profile leading to symptom relief. Despite the clinical and immune benefits of routine exercise, the direct effect of exercise on immune function in clinical pain populations remains unexplored. This review will discuss in more detail the preclinical and clinical research which demonstrates the numerous ways through which multiple types of exercise alter the peripheral immune system. This review closes with the clinical implications of these findings along with suggestions for future research directions.
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Affiliation(s)
- Joseph B. Lesnak
- Department of Neuroscience and Center for Advanced Pain Studies, University of Texas at Dallas, Richardson, TX, USA
| | - Giovanni Berardi
- Department of Physical Therapy & Rehabilitation Sciences, University of Iowa, Iowa City, IA, USA
| | - Kathleen A. Sluka
- Department of Physical Therapy & Rehabilitation Sciences, University of Iowa, Iowa City, IA, USA
- Corresponding author.
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16
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Chen H, She Q, Liu Y, Chen J, Qin Y, Lu C. The peripheral Epac1/p-Cav-1 pathway underlies the disruption of the vascular endothelial barrier following skin/muscle incision and retraction-induced chronic postsurgical pain. ANNALS OF TRANSLATIONAL MEDICINE 2022; 10:1377. [PMID: 36660643 PMCID: PMC9843368 DOI: 10.21037/atm-22-6069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 12/20/2022] [Indexed: 12/29/2022]
Abstract
Background Vascular endothelial barrier disruption is pivotal in the development of acute and chronic pain. Here, we demonstrate a previously unidentified molecular mechanism in which activation of the peripheral Epac1/p-Cav-1 pathway accelerated the disruption of the vascular endothelial barrier, thereby promoting chronic postsurgical pain (CPSP). Methods We established a rat model of CPSP induced by skin/muscle incision and retraction (SMIR). Pain behaviors were assessed by the mechanical withdrawal threshold (MWT) at different times. Local muscle tissues around the incision were isolated to detect the vascular permeability and the expression of Epac1 and Cav-1. They were assessed by western blot and immunofluorescence staining. Results SMIR increased vascular endothelial permeability and the number of macrophages and endothelial cells in the muscle tissues around the incision. The peripheral upregulation of Epac1 was macrophage-derived, whereas that of p-Cav-1 was both macrophage and endothelial cell-derived in the SMIR model. Moreover, the Epac1 agonist 8-pCPT could induce mechanical sensitivity, increase the expression of p-Cav-1, and disrupt vascular endothelial barrier in normal rats. The Epac1 inhibitor CE3F4 attenuated established SMIR-induced mechanical hyperalgesia, the upregulation of p-Cav-1 and vascular endothelial barrier. Finally, we showed that intrathecal injection of Cav-1siRNA relieved SMIR-induced mechanical allodynia, but had no effects of the expression of Epac1. Conclusions Collectively, these results revealed a molecular mechanism for modulating CPSP through the peripheral Epac1/Cav-1 pathway. Importantly, targeting Epac1/Cav-1 signaling might be a potential treatment for CPSP.
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Affiliation(s)
- Hongsheng Chen
- Department of Anesthesiology, Affiliated Hospital of Nantong University, Nantong, China
| | - Qing She
- Department of Anesthesiology, Affiliated Hospital of Nantong University, Nantong, China
| | - Yanfang Liu
- Department of Anesthesiology, Affiliated Hospital of Nantong University, Nantong, China
| | - Junjie Chen
- Department of Anesthesiology, Affiliated Hospital of Nantong University, Nantong, China
| | - Yibin Qin
- Department of Anesthesiology, Affiliated Hospital of Nantong University, Nantong, China
| | - Cui'e Lu
- Department of Anesthesiology, Affiliated Hospital of Nantong University, Nantong, China
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17
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Lenert ME, Gomez R, Lane BT, Dailey DL, Vance CGT, Rakel BA, Crofford LJ, Sluka KA, Merriwether EN, Burton MD. Translating Outcomes from the Clinical Setting to Preclinical Models: Chronic Pain and Functionality in Chronic Musculoskeletal Pain. PAIN MEDICINE (MALDEN, MASS.) 2022; 23:1690-1707. [PMID: 35325207 PMCID: PMC9527603 DOI: 10.1093/pm/pnac047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 03/11/2022] [Accepted: 03/15/2022] [Indexed: 11/13/2022]
Abstract
Fibromyalgia (FM) is a chronic pain disorder characterized by chronic widespread musculoskeletal pain (CWP), resting pain, movement-evoked pain (MEP), and other somatic symptoms that interfere with daily functioning and quality of life. In clinical studies, this symptomology is assessed, while preclinical models of CWP are limited to nociceptive assays. The aim of the study was to investigate the human-to-model translatability of clinical behavioral assessments for spontaneous (or resting) pain and MEP in a preclinical model of CWP. For preclinical measures, the acidic saline model of FM was used to induce widespread muscle pain in adult female mice. Two intramuscular injections of acidic or neutral pH saline were administered following baseline measures, 5 days apart. An array of adapted evoked and spontaneous pain measures and functional assays were assessed for 3 weeks. A novel paradigm for MEP assessment showed increased spontaneous pain following activity. For clinical measures, resting and movement-evoked pain and function were assessed in adult women with FM. Moreover, we assessed correlations between the preclinical model of CWP and in women with fibromyalgia to examine whether similar relationships between pain assays that comprise resting and MEP existed in both settings. For both preclinical and clinical outcomes, MEP was significantly associated with mechanical pain sensitivity. Preclinically, it is imperative to expand how the field assesses spontaneous pain and MEP when studying multi-symptom disorders like FM. Targeted pain assessments to match those performed clinically is an important aspect of improving preclinical to clinical translatability of animal models.
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Affiliation(s)
- Melissa E Lenert
- Neuroimmunology and Behavior Laboratory, Department of Neuroscience, Center for Advanced Pain Studies (CAPS), School of Behavioral and Brain Sciences, University of Texas at Dallas, Richardson, Texas, USA
| | - Rachelle Gomez
- Inclusive and Translational Research in Pain Lab, Department of Physical Therapy, Steinhardt School of Culture, Education, and Human Development, New York University, New York, New York, USA
| | - Brandon T Lane
- Neuroimmunology and Behavior Laboratory, Department of Neuroscience, Center for Advanced Pain Studies (CAPS), School of Behavioral and Brain Sciences, University of Texas at Dallas, Richardson, Texas, USA
| | - Dana L Dailey
- Neurobiology of Pain Lab, Department of Physical Therapy and Rehabilitation Science, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
- Department of Physical Therapy, Center for Health Sciences, St. Ambrose University, Davenport, Iowa, USA
| | - Carol G T Vance
- Neurobiology of Pain Lab, Department of Physical Therapy and Rehabilitation Science, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Barbara A Rakel
- College of Nursing, University of Iowa, Iowa City, Iowa, USA
| | - Leslie J Crofford
- Division of Rheumatology and Immunology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Kathleen A Sluka
- Neurobiology of Pain Lab, Department of Physical Therapy and Rehabilitation Science, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Ericka N Merriwether
- Inclusive and Translational Research in Pain Lab, Department of Physical Therapy, Steinhardt School of Culture, Education, and Human Development, New York University, New York, New York, USA
| | - Michael D Burton
- Neuroimmunology and Behavior Laboratory, Department of Neuroscience, Center for Advanced Pain Studies (CAPS), School of Behavioral and Brain Sciences, University of Texas at Dallas, Richardson, Texas, USA
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18
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Mechanisms underlying paclitaxel-induced neuropathic pain: Channels, inflammation and immune regulations. Eur J Pharmacol 2022; 933:175288. [PMID: 36122757 DOI: 10.1016/j.ejphar.2022.175288] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 09/07/2022] [Accepted: 09/13/2022] [Indexed: 11/22/2022]
Abstract
Paclitaxel is a chemotherapeutic agent widely used for many types of malignancies. However, when paclitaxel is used to treat tumors, patients commonly experience severe neuropathic pain that is difficult to manage. The mechanism underlying paclitaxel-induced neuropathic pain remains unclear. Evidence demonstrates correlations between mechanisms of paclitaxel-mediated pain and associated actions of ion channels, neuroinflammation, mitochondrial damage, and other factors. This review provides a comprehensive analysis of paclitaxel-induced neuropathic pain mechanisms and suggestions for effective interventions.
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19
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High-fat diet causes mechanical allodynia in the absence of injury or diabetic pathology. Sci Rep 2022; 12:14840. [PMID: 36050326 PMCID: PMC9437006 DOI: 10.1038/s41598-022-18281-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Accepted: 08/09/2022] [Indexed: 12/04/2022] Open
Abstract
Understanding the interactions between diet, obesity, and diabetes is important to tease out mechanisms in painful pathology. Western diet is rich in fats, producing high amounts of circulating bioactive metabolites. However, no research has assessed how a high-fat diet (HFD) alone may sensitize an individual to non-painful stimuli in the absence of obesity or diabetic pathology. To investigate this, we tested the ability of a HFD to stimulate diet-induced hyperalgesic priming, or diet sensitization in male and female mice. Our results revealed that 8 weeks of HFD did not alter baseline pain sensitivity, but both male and female HFD-fed animals exhibited robust mechanical allodynia when exposed to a subthreshold dose of intraplantar Prostaglandin E2 (PGE2) compared to mice on chow diet. Furthermore, calcium imaging in isolated primary sensory neurons of both sexes revealed HFD induced an increased percentage of capsaicin-responsive neurons compared to their chow counterparts. Immunohistochemistry (IHC) showed a HFD-induced upregulation of ATF3, a neuronal marker of injury, in lumbar dorsal root ganglia (DRG). This suggests that a HFD induces allodynia in the absence of a pre-existing condition or injury via dietary components. With this new understanding of how a HFD can contribute to the onset of pain, we can understand the dissociation behind the comorbidities associated with obesity and diabetes to develop pharmacological interventions to treat them more efficiently.
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Kumbhare D, Hassan S, Diep D, Duarte FCK, Hung J, Damodara S, West DWD, Selvaganapathy PR. Potential role of blood biomarkers in patients with fibromyalgia: a systematic review with meta-analysis. Pain 2022; 163:1232-1253. [PMID: 34966131 DOI: 10.1097/j.pain.0000000000002510] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 09/30/2021] [Indexed: 11/26/2022]
Abstract
ABSTRACT Fibromyalgia (FM) is a complex chronic pain condition. Its symptoms are nonspecific, and to date, no objective test exists to confirm FM diagnosis. Potential objective measures include the circulating levels of blood biomarkers. This systematic review and meta-analysis aim to review studies assessing blood biomarkers' levels in patients with FM compared with healthy controls. We systematically searched the PubMed, MEDLINE, EMBASE, and PsycINFO databases. Fifty-four studies reporting the levels of biomarkers in blood in patients with FM were included. Data were extracted, and the methodological quality was assessed independently by 2 authors. The methodological quality of 9 studies (17%) was low. The results of most studies were not directly comparable given differences in methods and investigated target immune mediators. Thus, data from 40 studies only were meta-analyzed using a random-effects model. The meta-analysis showed that patients with FM had significantly lower levels of interleukin-1 β and higher levels of IL-6, IL-8, tumor necrosis factor-alpha, interferon gamma, C-reactive protein, and brain-derived neurotrophic factor compared with healthy controls. Nevertheless, this systematic literature review and meta-analysis could not support the notion that these blood biomarkers are specific biomarkers of FM. Our literature review, however, revealed that these same individual biomarkers may have the potential role of identifying underlying pathologies or other conditions that often coexist with FM. Future research is needed to evaluate the potential clinical value for these biomarkers while controlling for the various confounding variables.
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Affiliation(s)
- Dinesh Kumbhare
- Toronto Rehabilitation Institute, University Health Network, Toronto, ON, Canada
- Division of Physical Medicine and Rehabilitation, Department of Medicine, University of Toronto, Toronto, ON, Canada
- Department of Mechanical Engineering, McMaster School of Biomedical Engineering, McMaster University, Hamilton, ON, Canada
| | - Samah Hassan
- Toronto Rehabilitation Institute, University Health Network, Toronto, ON, Canada
| | - Dion Diep
- MD Program, University of Toronto, Toronto, ON, Canada
| | - Felipe C K Duarte
- Division of Research and Innovation, Canadian Memorial Chiropractic College, Toronto, ON, Canada
| | - Jasper Hung
- Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, ON, Canada
| | - Sreekant Damodara
- Department of Mechanical Engineering, McMaster School of Biomedical Engineering, McMaster University, Hamilton, ON, Canada
| | - Daniel W D West
- Toronto Rehabilitation Institute, University Health Network, Toronto, ON, Canada
- Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, ON, Canada
| | - P Ravi Selvaganapathy
- Department of Mechanical Engineering, McMaster School of Biomedical Engineering, McMaster University, Hamilton, ON, Canada
- School of Biomedical Engineering, McMaster University, Hamilton, ON, Canada
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21
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Ohashi Y, Uchida K, Fukushima K, Satoh M, Koyama T, Tsuchiya M, Saito H, Uchiyama K, Takahira N, Inoue G, Takaso M. Correlation between CD163 expression and resting pain in patients with hip osteoarthritis: Possible contribution of CD163+ monocytes/macrophages to pain pathogenesis. J Orthop Res 2022; 40:1365-1374. [PMID: 34370345 DOI: 10.1002/jor.25157] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 07/15/2021] [Accepted: 07/30/2021] [Indexed: 02/04/2023]
Abstract
Expression of CD163, a scavenger receptor specifically expressed by monocytes and macrophages, is elevated in the synovial tissue of patients with knee osteoarthritis (OA) compared with healthy controls. However, the association between CD163 expression in the synovium and pain in OA patients is unclear. We investigated the correlation between synovial CD163 expression and resting and active pain levels in patients with hip osteoarthritis (HOA). To investigate the possible contribution of CD163+ subsets to pain pathogenesis, we compared pain-related cytokine expression and M1/M2 macrophage marker expression in CD163+ and CD163- cells. We performed flow cytometric analysis to study the CD163+ cell population. We also examined pain-related cytokine expression and M1/M2 macrophage marker expression on CD163+ CD14high and CD163+ CD14low cells using cell sorting. Synovial CD163 expression significantly correlated with resting pain levels (p = 0.006; R = 0.321), but not active pain levels (p = 0.155; R = 0.169). Expression of the M1 macrophage marker CD80 was significantly higher in CD163+ than CD163- cells (p = 0.010), as was the expression of M2 macrophage markers CD206 and IL10 (CD206, p = 0.014; IL10, p = 0.005), and TNFA and IL1B (TNFA, p = 0.002; IL1B, p = 0.001). TNFA expression was significantly higher in CD163+ CD14low than CD163+ CD14high cells, while IL1B, IL10, and CD206 expression were comparable among these subsets. Our findings suggest that CD163 expression is associated with higher resting pain scores. As TNF-α plays a role in the pain process, CD163+ CD14low cells expressing TNFA may be a potent contributor to the pathogenesis of resting pain in HOA.
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Affiliation(s)
- Yoshihisa Ohashi
- Department of Orthopaedic Surgery, Kitasato University School of Medicine, Sagamihara City, Kanagawa, Japan
| | - Kentaro Uchida
- Department of Orthopaedic Surgery, Kitasato University School of Medicine, Sagamihara City, Kanagawa, Japan
| | - Kensuke Fukushima
- Department of Orthopaedic Surgery, Kitasato University School of Medicine, Sagamihara City, Kanagawa, Japan
| | - Masashi Satoh
- Department of Immunology, Kitasato University School of Medicine, Sagamihara City, Kanagawa, Japan
| | - Tomohisa Koyama
- Department of Orthopaedic Surgery, Kitasato University School of Medicine, Sagamihara City, Kanagawa, Japan
| | - Maho Tsuchiya
- Department of Orthopaedic Surgery, Kitasato University School of Medicine, Sagamihara City, Kanagawa, Japan
| | - Hiroki Saito
- Department of Orthopaedic Surgery, Kitasato University School of Medicine, Sagamihara City, Kanagawa, Japan
| | - Katsufumi Uchiyama
- Department of Orthopaedic Surgery, Kitasato University School of Medicine, Sagamihara City, Kanagawa, Japan
| | - Naonobu Takahira
- Department of Rehabilitation, Kitasato University School of Allied Health Sciences, Sagamihara City, Kanagawa, Japan
| | - Gen Inoue
- Department of Orthopaedic Surgery, Kitasato University School of Medicine, Sagamihara City, Kanagawa, Japan
| | - Masashi Takaso
- Department of Orthopaedic Surgery, Kitasato University School of Medicine, Sagamihara City, Kanagawa, Japan
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Castelo-Branco L, Cardenas-Rojas A, Pacheco-Barrios K, Teixeira PEP, Gonzalez-Mego P, Vasquez-Avila K, Cortez PC, Marduy A, Rebello-Sanchez I, Parente J, Marzouk S, Fregni F. Can neural markers be used for fibromyalgia clinical management? PRINCIPLES AND PRACTICE OF CLINICAL RESEARCH (2015) 2022; 8:28-33. [PMID: 35677778 PMCID: PMC9172964 DOI: 10.21801/ppcrj.2022.81.5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Luis Castelo-Branco
- Neuromodulation Center and Center for Clinical Research Learning, Spaulding Rehabilitation Hospital and Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA. 79/96 13th Street, Charlestown – MA 02129
| | - Alejandra Cardenas-Rojas
- Neuromodulation Center and Center for Clinical Research Learning, Spaulding Rehabilitation Hospital and Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA. 79/96 13th Street, Charlestown – MA 02129
| | - Kevin Pacheco-Barrios
- Neuromodulation Center and Center for Clinical Research Learning, Spaulding Rehabilitation Hospital and Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA. 79/96 13th Street, Charlestown – MA 02129
- Universidad San Ignacio de Loyola, Vicerrectorado de Investigación, Unidad de Investigación para la Generación y Síntesis de Evidencias en Salud. Lima, Peru. La Fontana 550, La Molina – Peru 15024
| | - Paulo E. P. Teixeira
- Neuromodulation Center and Center for Clinical Research Learning, Spaulding Rehabilitation Hospital and Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA. 79/96 13th Street, Charlestown – MA 02129
- MGH Institute of Health Professions, 36 1st Ave, Boston, MA 02129, USA
| | - Paola Gonzalez-Mego
- Neuromodulation Center and Center for Clinical Research Learning, Spaulding Rehabilitation Hospital and Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA. 79/96 13th Street, Charlestown – MA 02129
| | - Karen Vasquez-Avila
- Neuromodulation Center and Center for Clinical Research Learning, Spaulding Rehabilitation Hospital and Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA. 79/96 13th Street, Charlestown – MA 02129
| | - Pablo Costa Cortez
- Neuromodulation Center and Center for Clinical Research Learning, Spaulding Rehabilitation Hospital and Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA. 79/96 13th Street, Charlestown – MA 02129
- Instituto de Ciencias Biologicas, Departamento de Imunologia Basica e Aplicada. Av. General Rodrigo Octavio Jordão Ramos, 1200 - Coroado I, Manaus - AM, Brazil- 69067-005
| | - Anna Marduy
- Neuromodulation Center and Center for Clinical Research Learning, Spaulding Rehabilitation Hospital and Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA. 79/96 13th Street, Charlestown – MA 02129
| | - Ingrid Rebello-Sanchez
- Neuromodulation Center and Center for Clinical Research Learning, Spaulding Rehabilitation Hospital and Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA. 79/96 13th Street, Charlestown – MA 02129
| | - Joao Parente
- Neuromodulation Center and Center for Clinical Research Learning, Spaulding Rehabilitation Hospital and Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA. 79/96 13th Street, Charlestown – MA 02129
| | | | - Felipe Fregni
- Neuromodulation Center and Center for Clinical Research Learning, Spaulding Rehabilitation Hospital and Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA. 79/96 13th Street, Charlestown – MA 02129
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