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Wu F, Liu J, Zheng L, Chen C, Basnet D, Zhang J, Shen C, Feng X, Sun Y, Du X, Zheng JC, Liu J. Preoperative pain sensitivity and its correlation with postoperative acute and chronic pain: a systematic review and meta-analysis. Br J Anaesth 2024; 133:591-604. [PMID: 38879440 DOI: 10.1016/j.bja.2024.05.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 04/24/2024] [Accepted: 05/21/2024] [Indexed: 08/12/2024] Open
Abstract
BACKGROUND Preoperative pain sensitivity (PPS) can be associated with postsurgical pain. However, estimates of this association are scarce. Confirming this correlation is essential to identifying patients at high risk for severe postoperative pain and for developing analgesic strategy. This systematic review and meta-analysis summarises PPS and assessed its correlation with postoperative pain. METHODS PubMed, Scopus, Cochrane Library, and PsycINFO were searched up to October 1, 2023, for studies reporting the association between PPS and postsurgical pain. Two authors abstracted estimates of the effect of each method independently. A random-effects model was used to combine data. Subgroup analyses were performed to investigate the effect of pain types and surgical procedures on outcomes. RESULTS A total of 70 prospective observational studies were included. A meta-analysis of 50 studies was performed. Postoperative pain was negatively associated with pressure pain threshold (PPT; r=-0.15, 95% confidence interval [CI] -0.23 to -0.07]) and electrical pain threshold (EPT; r=-0.28, 95% CI -0.42 to -0.14), but positively correlated with temporal summation of pain (TSP; r=0.21, 95% CI 0.12-0.30) and Pain Sensitivity Questionnaire (PSQ; r=0.25, 95% CI 0.13-0.37). Subgroup analysis showed that only TSP was associated with acute and chronic postoperative pain, whereas PPT, EPT, and PSQ were only associated with acute pain. A multilevel (three-level) meta-analysis showed that PSQ was not associated with postoperative pain. CONCLUSIONS Lower PPT and EPT, and higher TSP are associated with acute postoperative pain while only TSP is associated with chronic postoperative pain. Patients with abnormal preoperative pain sensitivity should be identified by clinicians to adopt early interventions for effective analgesia. SYSTEMATIC REVIEW PROTOCOL PROSPERO (CRD42023465727).
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Affiliation(s)
- Fan Wu
- Department of Anaesthesiology, School of Medicine, Tongji Hospital, Tongji University, Shanghai, China
| | - Jiehui Liu
- Department of Anaesthesiology, School of Medicine, Tongji Hospital, Tongji University, Shanghai, China
| | - Liang Zheng
- Research Center for Translation Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Changqi Chen
- Department of Anaesthesiology, School of Medicine, Tongji Hospital, Tongji University, Shanghai, China
| | - Diksha Basnet
- Department of Anaesthesiology, School of Medicine, Tongji Hospital, Tongji University, Shanghai, China
| | - Jingya Zhang
- Department of Anaesthesiology, School of Medicine, Tongji Hospital, Tongji University, Shanghai, China
| | - Chaonan Shen
- Research Center for Translation Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xuanran Feng
- Department of Anaesthesiology, School of Medicine, Tongji Hospital, Tongji University, Shanghai, China
| | - Yiyan Sun
- Department of Anaesthesiology, School of Medicine, Tongji Hospital, Tongji University, Shanghai, China
| | - Xue Du
- Department of Anaesthesiology, School of Medicine, Tongji Hospital, Tongji University, Shanghai, China
| | - Jialin C Zheng
- Center for Translational Neurodegeneration and Regenerative Therapy, Tongji Hospital Affiliated to Tongji University School of Medicine, Shanghai, China; Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People's Hospital Affiliated to Tongji University School of Medicine, Shanghai, China
| | - Jianhui Liu
- Department of Anaesthesiology, School of Medicine, Tongji Hospital, Tongji University, Shanghai, China.
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Patel R, Taylor JL, Dickenson AH, McMahon SB, Bannister K. A back-translational study of descending interactions with the induction of hyperalgesia by high-frequency electrical stimulation in rats and humans. Pain 2024; 165:1978-1989. [PMID: 38198231 PMCID: PMC11331830 DOI: 10.1097/j.pain.0000000000003166] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 10/13/2023] [Accepted: 10/29/2023] [Indexed: 01/12/2024]
Abstract
ABSTRACT In humans and animals, high-frequency electrocutaneous stimulation (HFS) induces an "early long-term potentiation-like" sensitisation, where synaptic plasticity is underpinned by an ill-defined interaction between peripheral input and central modulatory processes. The relative contributions of these processes to the initial pain or nociceptive response likely differ from those that underpin development of the heightened response. To investigate the impact of HFS-induced hyperalgesia on pain and nociception in perception and neural terms, respectively, and to explore the impact of descending inhibitory pathway activation on the development of HFS-induced hyperalgesia, we performed parallel studies utilising identical stimuli to apply HFS concurrent to (1) a conditioned pain modulation paradigm during psychophysical testing in healthy humans or (2) a diffuse noxious inhibitory controls paradigm during in vivo electrophysiological recording of spinal neurones in healthy anaesthetised rats. High-frequency electrocutaneous stimulation alone induced enhanced perceptual responses to pinprick stimuli in cutaneous areas secondary to the area of electrical stimulation in humans and increased the excitability of spinal neurones which exhibited stimulus intensity-dependent coded responses to pinprick stimulation in a manner that tracked with human psychophysics, supporting their translational validity. Application of a distant noxious conditioning stimulus during HFS did not alter perceived primary or secondary hyperalgesia in humans or the development of primary or secondary neuronal hyperexcitability in rats compared with HFS alone, suggesting that, upon HFS-response initiation in a healthy nervous system, excitatory signalling escapes inhibitory control. Therefore, in this model, dampening facilitatory mechanisms rather than augmenting top-down inhibitions could prevent pain development.
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Affiliation(s)
- Ryan Patel
- King's College London, Wolfson Centre, Guy's Campus, London, United Kingdom
| | - Joseph L. Taylor
- King's College London, Wolfson Centre, Guy's Campus, London, United Kingdom
| | - Anthony H. Dickenson
- Department of Neuroscience, Physiology & Pharmacology, University College London, London, United Kingdom
| | - Stephen B. McMahon
- King's College London, Wolfson Centre, Guy's Campus, London, United Kingdom
| | - Kirsty Bannister
- King's College London, Wolfson Centre, Guy's Campus, London, United Kingdom
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Petrucci M, Spadavecchia C, Rieben R, Casoni D. Mechanical and thermal thresholds before and after application of a conditioning stimulus in healthy Göttingen Minipigs. PLoS One 2024; 19:e0309604. [PMID: 39208203 PMCID: PMC11361583 DOI: 10.1371/journal.pone.0309604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Accepted: 08/13/2024] [Indexed: 09/04/2024] Open
Abstract
Minipigs are widely used in biomedical research for translational studies. However, information about pain elicited by experimental procedures is lacking. Non-invasive methods as quantitative sensory testing and conditioned pain modulation are particularly attractive. Our overarching aim was to explore and refine these methods for assessing post-operative pain in minipigs after myocardial infarction. As first step, we aimed at defining mechanical and thermal thresholds in healthy adults Göttingen Minipigs, evaluating their reliability, and testing their modifications after the application of a conditioning stimulus. Thresholds were assessed at different body sites before and after a painful conditioning stimulus (CS) (cuffed tourniquet) and sham CS (uncuffed tourniquet) in eleven animals. Thresholds' reliability was assessed using interclass correlation coefficient (ICC). The effect of the CS was assessed calculating absolute change, percentage change of the thresholds and standard error of measurement. Baseline mechanical thresholds (Newton) were: left hindlimb 81 [73; 81]; left forearm 81 [72.1; 81]; right forearm 81 [76; 81]; left chest 80.5 [68; 81]; right chest 81 [76.5; 81]; left neck 81 [70.3; 81]; right neck 74.8 [62.3; 80.5]. Reliability of mechanical thresholds was good at right chest (ICC = 0.835) and moderate at left chest (ICC = 0.591), left hindlimb (ICC = 0.606) and left neck (ICC = 0.518). Thermal thresholds showed poor reliability in all the tested sites. A modulatory effect was present at right chest, but it was seen when both a painful CS and a sham CS was applied. Minipigs tendentially showed a pro-nociceptive profile (i.e. conditioning pain facilitation). The measured thresholds are a reference for future trials in this species. Mechanical thresholds showed to be more reliable and, therefore, more useful, than thermal ones. The pain facilitation might be explained by the phenomenon of stress induced hyperalgesia, but this finding needs to be further investigated with a stricter paradigm.
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Affiliation(s)
- Mariafrancesca Petrucci
- Faculty of Medicine, Experimental Surgery Facility (ESF), Experimental Animal Center (EAC), University of Bern, Bern, Switzerland
- Faculty of Medicine, Department for BioMedical Research, University of Bern, Bern, Switzerland
- Graduate School for Cellular and BioMedical Science, University of Bern, Bern, Switzerland
| | - Claudia Spadavecchia
- Vetsuisse Faculty, Department of Clinical Veterinary Medicine, Anaesthesiology and Pain Therapy Section, University of Bern, Bern, Switzerland
| | - Robert Rieben
- Faculty of Medicine, Department for BioMedical Research, University of Bern, Bern, Switzerland
| | - Daniela Casoni
- Faculty of Medicine, Experimental Surgery Facility (ESF), Experimental Animal Center (EAC), University of Bern, Bern, Switzerland
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4
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González-Zamorano Y, José Sánchez-Cuesta F, Moreno-Verdú M, Arroyo-Ferrer A, Fernández-Carnero J, Chaudhuri KR, Fieldwalker A, Romero JP. TDCS for parkinson's disease disease-related pain: A randomized trial. Clin Neurophysiol 2024; 161:133-146. [PMID: 38479239 DOI: 10.1016/j.clinph.2024.01.011] [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: 09/25/2023] [Revised: 12/05/2023] [Accepted: 01/04/2024] [Indexed: 04/28/2024]
Abstract
OBJECTIVE To evaluate the effects of transcranial direct current stimulation (tDCS) on Parkinson's disease (PD)-related pain. METHODS This triple-blind randomized controlled trial included twenty-two patients (age range 38-85, 10 male) with PD-related pain. Eleven subjects received ten sessions of 20 minutes tDCS over the primary motor cortex contralateral to pain at 2 mA intensity. Eleven subjects received sham stimulation. Outcome measures included changes in the Kinǵs Parkinsońs Pain Scale (KPPS), Brief Pain Inventory (BPI), widespread mechanical hyperalgesia (WMH), temporal summation of pain (TS), and conditioned pain modulation (CPM). RESULTS Significant differences were found in KPPS between groups favoring the active-tDCS group compared to the sham-tDCS group at 15-days follow-up (p = 0.014) but not at 2 days post-intervention (p = 0.059). The active-group showed significant improvements over the sham-group after 15 days (p = 0.017). Significant changes were found in CPM between groups in favor of active-tDCS group at 2 days post-intervention (p = 0.002) and at 15 days (p = 0.017). No meaningful differences were observed in BPI or TS. CONCLUSIONS tDCS of the primary motor cortex alleviates perceived PD-related pain, reduces pain sensitization, and enhances descending pain inhibition. SIGNIFICANCE This is the first study to test and demonstrate the use of tDCS for improving PD-related pain.
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Affiliation(s)
- Yeray González-Zamorano
- International Doctorate School, Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Universidad Rey Juan Carlos, 28933 Alcorcón, Spain; Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Rey Juan Carlos University, 28933 Alcorcón, Spain; Cognitive Neuroscience, Pain and Rehabilitation Research Group (NECODOR), Faculty of Health Sciences, Rey Juan Carlos University, Madrid, Spain; Brain Injury and Movement Disorders Neurorehabilitation Group (GINDAT), Institute of Life Sciences, Francisco de Vitoria University, Pozuelo de Alarcón, Spain.
| | - Francisco José Sánchez-Cuesta
- Brain Injury and Movement Disorders Neurorehabilitation Group (GINDAT), Institute of Life Sciences, Francisco de Vitoria University, Pozuelo de Alarcón, Spain; Faculty of Experimental Sciences, Francisco de Vitoria University, 28223 Pozuelo de Alarcón, Spain.
| | - Marcos Moreno-Verdú
- Brain Injury and Movement Disorders Neurorehabilitation Group (GINDAT), Institute of Life Sciences, Francisco de Vitoria University, Pozuelo de Alarcón, Spain; Faculty of Experimental Sciences, Francisco de Vitoria University, 28223 Pozuelo de Alarcón, Spain
| | - Aida Arroyo-Ferrer
- Brain Injury and Movement Disorders Neurorehabilitation Group (GINDAT), Institute of Life Sciences, Francisco de Vitoria University, Pozuelo de Alarcón, Spain; Faculty of Experimental Sciences, Francisco de Vitoria University, 28223 Pozuelo de Alarcón, Spain.
| | - Josué Fernández-Carnero
- Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Rey Juan Carlos University, 28933 Alcorcón, Spain; Cognitive Neuroscience, Pain and Rehabilitation Research Group (NECODOR), Faculty of Health Sciences, Rey Juan Carlos University, Madrid, Spain.
| | - K Ray Chaudhuri
- Department of Basic and Clinical Neurosciences, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom; Parkinson's Foundation Centre of Excellence, King's College Hospital, London, United Kingdom.
| | - Anna Fieldwalker
- Department of Basic and Clinical Neurosciences, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom.
| | - Juan Pablo Romero
- Cognitive Neuroscience, Pain and Rehabilitation Research Group (NECODOR), Faculty of Health Sciences, Rey Juan Carlos University, Madrid, Spain; Brain Injury and Movement Disorders Neurorehabilitation Group (GINDAT), Institute of Life Sciences, Francisco de Vitoria University, Pozuelo de Alarcón, Spain; Faculty of Experimental Sciences, Francisco de Vitoria University, 28223 Pozuelo de Alarcón, Spain; Brain Damage Unit, Beata María Ana Hospital, 28007 Madrid, Spain.
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5
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Mikkelsen MB, Neumann H, Buskbjerg CR, Johannsen M, O'Toole MS, Arendt-Nielsen L, Zachariae R. The effect of experimental emotion induction on experimental pain: a systematic review and meta-analysis. Pain 2024; 165:e17-e38. [PMID: 37889565 DOI: 10.1097/j.pain.0000000000003073] [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: 09/29/2022] [Accepted: 07/31/2023] [Indexed: 10/28/2023]
Abstract
ABSTRACT The idea that emotions can influence pain is generally recognized. However, a synthesis of the numerous individual experimental studies on this subject is lacking. The aim of the present systematic review and meta-analysis was to synthesize the existing evidence on the effect of experimental emotion induction on experimental pain in nonclinical adults. PsycInfo and PubMed were searched up until April 10, 2023, for studies assessing differences in self-reported pain between emotion induction groups and/or control groups or between conditions within group. Risk of bias was assessed for the individual studies. The literature search yielded 78 relevant records of 71 independent studies. When compared with control conditions, the pooled results revealed a statistically significant pain-attenuating effect of positive emotion induction (between-group: Hedges g = -0.48, 95% CI: -0.72; -0.25, K = 9; within-group: g = -0.24, 95% CI: -0.32; -0.15, K = 40), and a statistically significant pain-exacerbating effect of negative emotion induction in within-group analyses but not between-group analyses (between-group: g = -0.29, 95% CI: -0.66; 0.07, K = 10; within-group: g = 0.14, 95% CI: 0.06; 0.23, K = 39). Bayesian meta-analysis provided strong support for an effect of positive emotion induction but weak support for an effect of negative emotion induction. Taken together, the findings indicate a pain-attenuating effect of positive emotion induction, while the findings for negative emotion induction are less clear. The findings are discussed with reference to theoretical work emphasizing the role of motivational systems and distraction for pain. Limitations include considerable heterogeneity across studies limiting the generalizability of the findings.
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Affiliation(s)
| | - Henrike Neumann
- Dept. of Psychology and Behavioural Sciences, Aarhus University, Aarhus, Denmark
| | | | - Maja Johannsen
- Dept. of Psychology and Behavioural Sciences, Aarhus University, Aarhus, Denmark
| | - Mia Skytte O'Toole
- Dept. of Psychology and Behavioural Sciences, Aarhus University, Aarhus, Denmark
| | - Lars Arendt-Nielsen
- Center for Neuroplasticity and Pain (CNAP), SMI, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark
- Department of Medical Gastroenterology, Mech-Sense, Aalborg University Hospital, Aalborg, Denmark
| | - Robert Zachariae
- Dept. of Psychology and Behavioural Sciences, Aarhus University, Aarhus, Denmark
- Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
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6
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Nielsen SS, Skou ST, Larsen AE, Polianskis R, Arendt-Nielsen L, Østergaard AS, Kjær-Staal Petersen K, Vægter HB, Søndergaard J, Christensen JR. Changes in pain, daily occupations, lifestyle, and health following an occupational therapy lifestyle intervention: a secondary analysis from a feasibility study in patients with chronic high-impact pain. Scand J Pain 2024; 24:sjpain-2023-0043. [PMID: 38037749 DOI: 10.1515/sjpain-2023-0043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 11/15/2023] [Indexed: 12/02/2023]
Abstract
OBJECTIVES This study explored changes in pain-related parameters, occupational function, occupational balance, lifestyle factors, and self-perceived health status in adults with chronic high-impact pain participating in an occupational therapy lifestyle intervention. METHODS This one-group longitudinal feasibility study was performed in three continuous feasibility rounds. The occupational therapists-led intervention targeted meaningful occupations, regular physical activity, and a healthy diet. The intervention contained individual and group sessions and was added to the standard multidisciplinary chronic pain treatment. Outpatients (n=40, 85 % females, 46.6 ± 10.9 years old) participated in the study between April 2019 and December 2021. The analysis includes data for 31 participants. Analysis of pre-post changes assessed after each feasibility round were performed for the outcomes: pain intensity, pain sensitivity and pain modulation (pressure pain threshold and tolerance, temporal summation of pain and conditioned pain modulation), pain self-efficacy, pain catastrophizing, motor and process skills, occupational balance, daily wake-time movement, daily walking steps, body mass index, waist circumference, blood pressure, and self-perceived health status. RESULTS Improvements in motor skills (assessment of motor and process skills score=0.20 (1.37; 1.57), 95 % CI 0.01; 0.38) and temporal summation of pain (-1.19 (2.86; -1.67), 95 % CI -2.16; -0.22), but a decrease in pain tolerance (-7.110 (54.42; 47.32), 95 % CI -13.99; -0.22) were observed. Correlation analysis suggested moderate-to-very strong statistically significant relationships in several outcomes related to pain, health, pain coping, occupational balance, occupational functioning, body anthropometrics, and pain sensitivity. CONCLUSIONS This study suggested that the lifestyle intervention would benefit motor skills while effects on other outcomes were unclear in adults with chronic pain. To confirm the findings, a randomized trial evaluating effectiveness is needed. Ethical committee number: SJ-307 Reg. Clinicaltrials.gov: NCT03903900.
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Affiliation(s)
- Svetlana Solgaard Nielsen
- Research Unit PROgrez, Department of Physiotherapy and Occupational Therapy, Naestved, Slagelse & Ringsted Hospitals, Slagelse, Denmark
- Institute of Regional Health Research, University of Southern Denmark, Odense, Denmark
| | - Søren T Skou
- Research Unit PROgrez, Department of Physiotherapy and Occupational Therapy, Naestved, Slagelse & Ringsted Hospitals, Slagelse, Denmark
- Research Unit for Musculoskeletal Function and Physiotherapy, Department of Sports Science and Clinical Biomechanics, Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark
| | - Anette Enemark Larsen
- Department of Therapy and Midwifery Studies, Faculty of Health Sciences, University College Copenhagen, Copenhagen, Denmark
| | - Romanas Polianskis
- Multidisciplinary Pain Centre, Department of Anesthesiology, Naestved Hospital, Naestved, Denmark
| | - Lars Arendt-Nielsen
- Department of Health Science and Technology, Faculty of Medicine, Aalborg University Hospital, Aalborg, Denmark
| | - Anne Skov Østergaard
- Research Unit for Musculoskeletal Function and Physiotherapy, Department of Sports Science and Clinical Biomechanics, Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark
| | | | - Henrik Bjarke Vægter
- Pain Research Group/Pain Centre, Department of Anesthesiology and Intensive Care Medicine, Odense University Hospital, Odense, Denmark
- Department of Clinical Research, Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark
| | - Jens Søndergaard
- Research Unit of General Practice, Department of Public Health, Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark
| | - Jeanette Reffstrup Christensen
- Research Unit of General Practice, Department of Public Health, Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark
- User Perspectives, Department of Public Health, Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark
- Research Unit of General Practice, Department of Public Health, Faculty of Health Sciences, Aarhus University, Aarhus, Denmark
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7
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Flor H, Noguchi K, Treede RD, Turk DC. The role of evolving concepts and new technologies and approaches in advancing pain research, management, and education since the establishment of the International Association for the Study of Pain. Pain 2023; 164:S16-S21. [PMID: 37831955 DOI: 10.1097/j.pain.0000000000003063] [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: 05/01/2023] [Accepted: 08/09/2023] [Indexed: 10/15/2023]
Abstract
ABSTRACT The decades since the inauguration of the International Association for the Study of Pain have witnessed major advances in scientific concepts (such as the biopsychosocial model and chronic primary pain as a disease in its own right) and in new technologies and approaches (from molecular biology to brain imaging) that have inspired innovations in pain research. These have guided progress in pain management and education about pain for healthcare professionals, the general public, and administrative agencies.
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Affiliation(s)
- Herta Flor
- Institute of Cognitive and Clinical Neuroscience, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Koichi Noguchi
- Laboratory of Pain Mechanism Research, Hyogo Medical University, Hyogo, Japan
| | - Rolf-Detlef Treede
- Department of Neurophysiology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Dennis C Turk
- Department of Anesthesiology and Pain Medicine, University of Washington, Seattle, WA, United States
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8
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Colman M, Syx D, De Wandele I, Rombaut L, Wille D, Malfait Z, Meeus M, Malfait AM, Van Oosterwijck J, Malfait F. Sensory Profiling in Classical Ehlers-Danlos Syndrome: A Case-Control Study Revealing Pain Characteristics, Somatosensory Changes, and Impaired Pain Modulation. THE JOURNAL OF PAIN 2023; 24:2063-2078. [PMID: 37380025 DOI: 10.1016/j.jpain.2023.06.015] [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: 02/28/2023] [Revised: 06/13/2023] [Accepted: 06/20/2023] [Indexed: 06/30/2023]
Abstract
Pain is one of the most important yet poorly understood complaints in heritable connective tissue disorders (HCTDs) caused by monogenic defects in extracellular matrix molecules. This is particularly the case for the Ehlers-Danlos syndrome (EDS), paradigm collagen-related disorders. This study aimed to identify the pain signature and somatosensory characteristics in the rare classical type of EDS (cEDS) caused by defects in type V or rarely type I collagen. We used static and dynamic quantitative sensory testing and validated questionnaires in 19 individuals with cEDS and 19 matched controls. Individuals with cEDS reported clinically relevant pain/discomfort (Visual Analogue Scale ≥5/10 in 32% for average pain intensity the past month) and worse health-related quality of life. An altered somatosensory profile was found in the cEDS group with higher (P = .04) detection thresholds for vibration stimuli at the lower limb, indicating hypoesthesia, reduced thermal sensitivity with more (P < .001) paradoxical thermal sensations (PTSs), and hyperalgesia with lower pain thresholds to mechanical (P < .001) stimuli at both the upper and lower limbs and cold (P = .005) stimulation at the lower limb. Using a parallel conditioned pain modulation paradigm, the cEDS group showed significantly smaller antinociceptive responses (P-value .005-.046) suggestive of impaired endogenous pain modulation. In conclusion, individuals with cEDS report chronic pain and worse health-related quality of life and present altered somatosensory perception. This study is the first to systematically investigate pain and somatosensory characteristics in a genetically defined HCTD and provides interesting insights into the possible role of the ECM in the development and persistence of pain. PERSPECTIVE: Chronic pain compromises the quality of life in individuals with cEDS. Moreover, an altered somatosensory perception was found in the cEDS group with hypoesthesia for vibration stimuli, more PTSs, hyperalgesia for pressure stimuli, and impaired pain modulation.
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Affiliation(s)
- Marlies Colman
- Center for Medical Genetics, Ghent University Hospital, Ghent, East Flanders, Belgium; Department of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, Ghent, East Flanders, Belgium; Pain in Motion International Research Consortium, Belgium
| | - Delfien Syx
- Center for Medical Genetics, Ghent University Hospital, Ghent, East Flanders, Belgium; Department of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, Ghent, East Flanders, Belgium
| | - Inge De Wandele
- Department of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, Ghent, East Flanders, Belgium
| | - Lies Rombaut
- Department of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, Ghent, East Flanders, Belgium
| | - Deborah Wille
- Department of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, Ghent, East Flanders, Belgium
| | - Zoë Malfait
- Department of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, Ghent, East Flanders, Belgium
| | - Mira Meeus
- Pain in Motion International Research Consortium, Belgium; Spine, Head and Pain Research Unit Ghent, Faculty of Medicine and Health Sciences, Department of Rehabilitation Sciences, Ghent University, Ghent, East Flanders, Belgium
| | - Anne-Marie Malfait
- Department of Internal Medicine, Division of Rheumatology, Rush University Medical Center, Chicago, Illinois
| | - Jessica Van Oosterwijck
- Pain in Motion International Research Consortium, Belgium; Spine, Head and Pain Research Unit Ghent, Faculty of Medicine and Health Sciences, Department of Rehabilitation Sciences, Ghent University, Ghent, East Flanders, Belgium
| | - Fransiska Malfait
- Center for Medical Genetics, Ghent University Hospital, Ghent, East Flanders, Belgium; Department of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, Ghent, East Flanders, Belgium
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9
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Rasmussen AH, Petersen LK, Kaasgaard Sperling M, Bertelsen MM, Rathleff MS, Petersen KKS. The potential effect of walking on quantitative sensory testing, pain catastrophizing, and perceived stress: an exploratory study. Scand J Pain 2023; 23:751-758. [PMID: 37694875 DOI: 10.1515/sjpain-2023-0039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 08/22/2023] [Indexed: 09/12/2023]
Abstract
OBJECTIVES Studies suggest that a range of pain mechanisms, such as poor quality of sleep, perceived stress, pain catastrophizing or pain sensitivity, are likely to enhance clinical pain. Animal studies suggest that these pain mechanisms can be modulated by increasing physical activity, but human data are needed to support this hypothesis. This exploratory study aimed to investigate the changes in pain mechanisms after a simple self-directed walking program of 8-weeks. Additionally, this exploratory study investigated the interaction between changes over time in assessments of poor quality of sleep, perceived stress, pain catastrophizing or pain sensitivity and how these changes interacted with each other. METHODS This prospective cohort study included 30 healthy subjects who were assessed at baseline and 4- and 8-weeks after initiating the walking program (30 min walking/day for 8 weeks). Self-report outcomes included: Pain Catastrophizing Scale (PCS), the Perceived Stress Scale (PSS) and Pittsburgh Sleep Quality Index. Pressure pain thresholds, temporal summation of pain and conditioned pain modulation (CPM) were assessed using cuff algometry. RESULTS Twenty-four subjects completed all the visits (age: 42.2, SD: 14.9, 16 females). PCS and PSS significantly decreased at the 8-week's visit compared to baseline (p<0.05). No significant differences were seen for an improvement in quality of sleep (p=0.071) and pain sensitivity (p>0.075) when comparing the 8-week's visit to the baseline visit. Changes in pain mechanisms comparing baseline and 8-weeks data were calculated and regression analyses found that an improvement in PCS was associated with an improvement in CPM (R2=0.197, p=0.017) and that a higher adherence to the walking program was associated with a larger improvement in PCS (R2=0.216, p=0.013). CONCLUSIONS The current exploratory study indicates that a simple self-directed walking program of 8-weeks can improve pain catastrophizing thoughts, perceived stress. Higher adherence to the walking program were associated with an improvement in pain catastrophizing and an improvement in pain catastrophizing was associated with an increase in conditioned pain modulation.
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Affiliation(s)
- Anna Houmøller Rasmussen
- Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark
| | - Lærke Kjeldgaard Petersen
- Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark
| | - Mette Kaasgaard Sperling
- Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark
| | - Maria Møller Bertelsen
- Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark
| | - Michael Skovdal Rathleff
- Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark
- Department of Clinical Medicine, Center for General Practice, Aalborg University, Aalborg, Denmark
| | - Kristian Kjær-Staal Petersen
- Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark
- Department of Health Science and Technology, Faculty of Medicine, Center for Neuroplasticity and Pain, Aalborg University, Aalborg, Denmark
- Center for Mathematical Modeling of Knee Osteoarthritis (MathKOA), Aalborg University, Aalborg, Denmark
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10
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Reis FJJ, Bittencourt JV, Calestini L, de Sá Ferreira A, Meziat-Filho N, Nogueira LC. Exploratory analysis of 5 supervised machine learning models for predicting the efficacy of the endogenous pain inhibitory pathway in patients with musculoskeletal pain. Musculoskelet Sci Pract 2023; 66:102788. [PMID: 37315499 DOI: 10.1016/j.msksp.2023.102788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 05/09/2023] [Accepted: 06/05/2023] [Indexed: 06/16/2023]
Abstract
OBJECTIVES The identification of factors that influence the efficacy of endogenous pain inhibitory pathways remains challenging due to different protocols and populations. We explored five machine learning (ML) models to estimate the Conditioned Pain Modulation (CPM) efficacy. DESIGN Exploratory, cross-sectional design. SETTING AND PARTICIPANTS This study was conducted in an outpatient setting and included 311 patients with musculoskeletal pain. METHODS Data collection included sociodemographic, lifestyle, and clinical characteristics. CPM efficacy was calculated by comparing the pressure pain thresholds before and after patients submerged their non-dominant hand in a bucket of cold water (cold-pressure test) (1-4 °C). We developed five ML models: decision tree, random forest, gradient-boosted trees, logistic regression, and support vector machine. MAIN OUTCOME MEASURES Model performance were assessed using receiver operating characteristic curve (AUC), accuracy, sensitivity, specificity, precision, recall, F1-score, and the Matthews Correlation Coefficient (MCC). To interpret and explain the predictions, we used SHapley Additive explanation values and Local Interpretable Model-Agnostic Explanations. RESULTS The XGBoost model presented the highest performance with an accuracy of 0.81 (95% CI = 0.73 to 0.89), F1 score of 0.80 (95% CI = 0.74 to 0.87), AUC of 0.81 (95% CI: 0.74 to 0.88), MCC of 0.61, and Kappa of 0.61. The model was influenced by duration of pain, fatigue, physical activity, and the number of painful areas. CONCLUSIONS XGBoost showed potential in predicting the CPM efficacy in patients with musculoskeletal pain on our dataset. Further research is needed to ensure the external validity and clinical utility of this model.
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Affiliation(s)
- Felipe J J Reis
- Physical Therapy Department, Instituto Federal do Rio de Janeiro (IFRJ), Rio de Janeiro, Brazil; Postgraduate Program in Clinical Medicine, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil; . Pain in Motion Research Group, Department of Physiotherapy, Human Physiology and Anatomy, Faculty of Physical Education & Physiotherapy, Vrije Universiteit Brussel, Brussels, Belgium.
| | - Juliana Valentim Bittencourt
- Postgraduate Program in Rehabilitation Sciences, Centro Universitário Augusto Motta (UNISUAM), Rio de Janeiro, Brazil
| | | | - Arthur de Sá Ferreira
- Postgraduate Program in Rehabilitation Sciences, Centro Universitário Augusto Motta (UNISUAM), Rio de Janeiro, Brazil
| | - Ney Meziat-Filho
- Postgraduate Program in Rehabilitation Sciences, Centro Universitário Augusto Motta (UNISUAM), Rio de Janeiro, Brazil
| | - Leandro C Nogueira
- Physical Therapy Department, Instituto Federal do Rio de Janeiro (IFRJ), Rio de Janeiro, Brazil; Postgraduate Program in Rehabilitation Sciences, Centro Universitário Augusto Motta (UNISUAM), Rio de Janeiro, Brazil
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11
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Bakken AG, Axén I, Eklund A, Warnqvist A, O'Neill S. Temporal stability and responsiveness of a conditioned pain modulation test. Scand J Pain 2023; 23:571-579. [PMID: 36869854 DOI: 10.1515/sjpain-2022-0084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 02/22/2023] [Indexed: 03/05/2023]
Abstract
OBJECTIVES Conditioned pain modulation is a commonly used quantitative sensory test, measuring endogenous pain control. The temporal stability of the test is questioned, and there is a lack of agreement on the effect of different pain conditions on the conditioned pain modulation response. Thus, an investigation of the temporal stability of a conditioned pain modulation test among patients suffering from persistent or recurrent neck pain is warranted. Further, an investigation into the difference between patients experiencing a clinically important improvement in pain and those not experiencing such an improvement will aid the understanding between changes in pain and the stability of the conditioned pain modulation test. METHODS This study is based on a randomized controlled trial investigating the effect of home stretching exercises and spinal manipulative therapy vs. home stretching exercises alone. As no difference was found between the interventions, all participants were studied as a prospective cohort in this study, investigating the temporal stability of a conditioned pain modulation test. The cohort was also divided into responders with a minimally clinically important improvement in pain and those not experiencing such an improvement. RESULTS Stable measurements of conditioned pain modulation were observed for all independent variables, with a mean change in individual CPM responses of 0.22 from baseline to one week with a standard deviation of 1.34, and -0.15 from the first to the second week with a standard deviation of 1.23. An Intraclass Correlation Coefficient (ICC3 - single, fixed rater) for CPM across the three time points yielded a coefficient of 0.54 (p<0.001). CONCLUSIONS Patients with persistent or recurrent neck pain had stable CPM responses over a 2 week course of treatment irrespective of clinical response.
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Affiliation(s)
- Anders Galaasen Bakken
- Department of Environmental Medicine, Unit of Intervention and Implementation Research for Worker Health, Karolinska Institutet, Stockholm, Sweden
| | - Iben Axén
- Department of Environmental Medicine, Unit of Intervention and Implementation Research for Worker Health, Karolinska Institutet, Stockholm, Sweden
| | - Andreas Eklund
- Department of Environmental Medicine, Unit of Intervention and Implementation Research for Worker Health, Karolinska Institutet, Stockholm, Sweden
| | - Anna Warnqvist
- Division of Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Søren O'Neill
- Spine Centre of Southern Denmark, University Hospital of Southern Denmark, Middelfart, Denmark
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12
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Danielsen AV, Andreasen JJ, Dinesen B, Hansen J, Kjær-Staal Petersen K, Simonsen C, Arendt-Nielsen L. Chronic post-thoracotomy pain after lung cancer surgery: a prospective study of preoperative risk factors. Scand J Pain 2023; 23:501-510. [PMID: 37327358 DOI: 10.1515/sjpain-2023-0016] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 05/27/2023] [Indexed: 06/18/2023]
Abstract
OBJECTIVES The objective of this longitudinal cohort study was to investigate if preoperative pain mechanisms, anxiety, and depression increase risk of developing chronic post-thoracotomy pain (CPTP) after lung cancer surgery. METHODS Patients with suspected or confirmed lung cancer undergoing surgery by either video-assisted thoracoscopic surgery or anterior thoracotomy were recruited consecutively. Preoperative assessments were conducted by: quantitative sensory testing (QST) (brush, pinprick, cuff pressure pain detection threshold, cuff pressure tolerance pain threshold, temporal summation and conditioned pain modulation), neuropathic pain symptom inventory (NPSI), and the Hospital Anxiety and Depression Scale (HADS). Clinical parameters in relation to surgery were also collected. Presence of CPTP was determined after six months and defined as pain of any intensity in relation to the operation area on a numeric rating scale form 0 (no pain) to 10 (worst pain imaginable). RESULTS A total of 121 patients (60.2 %) completed follow-up and 56 patients (46.3 %) reported CPTP. Development of CPTP was associated with higher preoperative HADS score (p=0.025), higher preoperative NPSI score (p=0.009) and acute postoperative pain (p=0.042). No differences were observed in relation to preoperative QST assessment by cuff algometry and HADS anxiety and depression sub-scores. CONCLUSIONS High preoperative HADS score preoperative pain, acute postoperative pain intensity, and preoperative neuropathic symptoms were was associated with CPTP after lung cancer surgery. No differences in values of preoperative QST assessments were found. Preoperative assessment and identification of patients at higher risk of postoperative pain will offer opportunity for further exploration and development of preventive measures and individualised pain management depending on patient risk profile.
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Affiliation(s)
- Allan Vestergaard Danielsen
- Department of Cardiothoracic Surgery, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Jan Jesper Andreasen
- Department of Cardiothoracic Surgery, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Birthe Dinesen
- Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Laboratory of Welfare Technologies - Digital Health & Rehabilitation, Aalborg, Denmark
| | - John Hansen
- Department of Health Science and Technology, Faculty of Medicine, Aalborg University, CardioTech Research Group, Aalborg, Denmark
| | - Kristian Kjær-Staal Petersen
- Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Center for Neuroplasticity and Pain (CNAP), SMI, Aalborg, Denmark
| | - Carsten Simonsen
- Department of Cardiothoracic Surgery, Aalborg University Hospital, Aalborg, Denmark
| | - Lars Arendt-Nielsen
- Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Center for Neuroplasticity and Pain (CNAP), SMI, Aalborg, Denmark
- Department of Clinical Gastroenterology, Mech-Sense, Aalborg University Hospital, Aalborg, Denmark
- Steno Diabetes Center North Denmark, Clinical Institute, Aalborg University Hospital, Aalborg, Denmark
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13
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Zwaag J, Timmerman H, Pickkers P, Kox M. Modulation of Pain Sensitivity by a Hyperventilatory Breathing Exercise and Cold Exposure Training. J Pain Res 2023; 16:1979-1991. [PMID: 37333948 PMCID: PMC10276601 DOI: 10.2147/jpr.s400408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 05/08/2023] [Indexed: 06/20/2023] Open
Abstract
Background Evidence indicates that healthy individuals who follow a training program comprised hyperventilatory breathing exercises and cold exposure can voluntarily activate their sympathetic nervous system and attenuate their systemic inflammatory response during experimental endotoxemia (intravenous administration of bacterial endotoxin). Furthermore, trained participants reported less endotoxemia-induced flu-like symptoms. However, it remained to be determined whether the effects on symptoms are due to the mitigated inflammatory response or involve direct analgesic effects of (elements of) the training program. Methods In the present study, we used Nijmegen-Aalborg Screening Quantitative sensory testing (NASQ) to objectively map pain sensitivity using non-invasive stimuli to address this question. First, NASQ parameters were evaluated in 20 healthy volunteers before, during, and after the conduct of the hyperventilatory breathing exercise. Second, NASQ measurements were performed before and after 48 healthy volunteers followed different modalities of the training program: breathing exercise training, cold exposure training, the combination of both, or no training. Lastly, NASQ measurements were performed in these 48 subjects during experimental endotoxemia. Results Electrical pain detection thresholds increased during the breathing exercise (p = 0.001) as well as four hours afterwards (p = 0.03). Furthermore, cold exposure training resulted in lower VAS scores during hand immersion in ice water (p < 0.001). Systemic inflammation induced by administration of endotoxin nullified the decreased pain perception during the ice water test in subjects trained in cold exposure. Conclusion A hyperventilatory breathing exercise decreases pain perception induced by an electrical stimulus. Furthermore, cold exposure training may decrease pain perception induced by hand immersion in ice water.
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Affiliation(s)
- Jelle Zwaag
- Department of Intensive Care Medicine, Radboud University Medical Center, Nijmegen, the Netherlands
- Radboud Center for Infectious Diseases (RCI), Radboud University Medical Center, Nijmegen, the Netherlands
| | - Hans Timmerman
- University of Groningen, University Medical Center Groningen, Department of Anesthesiology, Pain Center, Groningen, the Netherlands
- Department of Anesthesiology, Pain and Palliative Medicine, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Peter Pickkers
- Department of Intensive Care Medicine, Radboud University Medical Center, Nijmegen, the Netherlands
- Radboud Center for Infectious Diseases (RCI), Radboud University Medical Center, Nijmegen, the Netherlands
| | - Matthijs Kox
- Department of Intensive Care Medicine, Radboud University Medical Center, Nijmegen, the Netherlands
- Radboud Center for Infectious Diseases (RCI), Radboud University Medical Center, Nijmegen, the Netherlands
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14
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Schmid AB, Ridgway L, Hailey L, Tachrount M, Probert F, Martin KR, Scott W, Crombez G, Price C, Robinson C, Koushesh S, Ather S, Tampin B, Barbero M, Nanz D, Clare S, Fairbank J, Baskozos G. Factors predicting the transition from acute to persistent pain in people with 'sciatica': the FORECAST longitudinal prognostic factor cohort study protocol. BMJ Open 2023; 13:e072832. [PMID: 37019481 PMCID: PMC10111910 DOI: 10.1136/bmjopen-2023-072832] [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: 02/15/2023] [Accepted: 03/15/2023] [Indexed: 04/07/2023] Open
Abstract
INTRODUCTION Sciatica is a common condition and is associated with higher levels of pain, disability, poorer quality of life, and increased use of health resources compared with low back pain alone. Although many patients recover, a third develop persistent sciatica symptoms. It remains unclear, why some patients develop persistent sciatica as none of the traditionally considered clinical parameters (eg, symptom severity, routine MRI) are consistent prognostic factors.The FORECAST study (factors predicting the transition from acute to persistent pain in people with 'sciatica') will take a different approach by exploring mechanism-based subgroups in patients with sciatica and investigate whether a mechanism-based approach can identify factors that predict pain persistence in patients with sciatica. METHODS AND ANALYSIS We will perform a prospective longitudinal cohort study including 180 people with acute/subacute sciatica. N=168 healthy participants will provide normative data. A detailed set of variables will be assessed within 3 months after sciatica onset. This will include self-reported sensory and psychosocial profiles, quantitative sensory testing, blood inflammatory markers and advanced neuroimaging. We will determine outcome with the Sciatica Bothersomeness Index and a Numerical Pain Rating Scale for leg pain severity at 3 and 12 months.We will use principal component analysis followed by clustering methods to identify subgroups. Univariate associations and machine learning methods optimised for high dimensional small data sets will be used to identify the most powerful predictors and model selection/accuracy.The results will provide crucial information about the pathophysiological drivers of sciatica symptoms and may identify prognostic factors of pain persistence. ETHICS AND DISSEMINATION The FORECAST study has received ethical approval (South Central Oxford C, 18/SC/0263). The dissemination strategy will be guided by our patient and public engagement activities and will include peer-reviewed publications, conference presentations, social media and podcasts. TRIAL REGISTRATION NUMBER ISRCTN18170726; Pre-results.
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Affiliation(s)
- Annina B Schmid
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, Oxfordshire, UK
- Wellcome Centre for Integrative Neuroimaging, University of Oxford, Oxford, Oxfordshire, UK
| | - Lucy Ridgway
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, Oxfordshire, UK
| | - Louise Hailey
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, Oxfordshire, UK
- Nuffield Department of Orthopaedics Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, Oxfordshire, UK
| | - Mohamed Tachrount
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, Oxfordshire, UK
- Wellcome Centre for Integrative Neuroimaging, University of Oxford, Oxford, Oxfordshire, UK
| | - Fay Probert
- Department of Chemistry, University of Oxford, Oxford, Oxfordshire, UK
| | - Kathryn R Martin
- Academic Primary Care, Institute of Applied Health Sciences, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, UK
- Aberdeen Centre for Arhtritis and Musculoskeletal Health, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, UK
| | - Whitney Scott
- Health Psychology Section, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
- INPUT Pain Management Unit, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Geert Crombez
- Department of Experimental Clinical and Health Psychology, University of Ghent, Gent, Belgium
| | - Christine Price
- Patient partner FORECAST study, Oxford University, Oxford, UK
| | - Claire Robinson
- Patient partner FORECAST study, Oxford University, Oxford, UK
| | - Soraya Koushesh
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, Oxfordshire, UK
| | - Sarim Ather
- Department of Radiology, Oxford University Hospitals NHS Foundation Trust, Oxford, Oxfordshire, UK
| | - Brigitte Tampin
- Department of Physiotherapy, Sir Charles Gairdner Hospital, Perth, Western Australia, Australia
- Curtin School of Allied Health, Faculty of Health Sciences, Curtin University, Perth, Western Australia, Australia
- Faculty of Business and Social Sciences, University of Applied Sciences, Osnabrueck, Germany
| | - Marco Barbero
- Rehabilitation Research Laboratory 2rLab, Department of Business Economics Health and Social Care, University of Applied Sciences and Arts of Southern Switzerland, Manno, Ticino, Switzerland
| | - Daniel Nanz
- Swiss Center for Musculoskeletal Imaging, Balgrist Campus AG, Zurich, Zurich, Switzerland
- Medical Faculty, University of Zurich, Zurich, Zurich, Switzerland
| | - Stuart Clare
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, Oxfordshire, UK
- Wellcome Centre for Integrative Neuroimaging, University of Oxford, Oxford, Oxfordshire, UK
| | - Jeremy Fairbank
- Nuffield Department of Orthopaedics Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, Oxfordshire, UK
| | - Georgios Baskozos
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, Oxfordshire, UK
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15
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Gray matter volume and pain tolerance in a general population: the Tromsø study. Pain 2023:00006396-990000000-00257. [PMID: 36877481 DOI: 10.1097/j.pain.0000000000002871] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 01/03/2023] [Indexed: 03/07/2023]
Abstract
ABSTRACT As pain is processed by an extensive network of brain regions, the structural status of the brain may affect pain perception. We aimed to study the association between gray matter volume (GMV) and pain sensitivity in a general population. We used data from 1522 participants in the seventh wave of the Tromsø study, who had completed the cold pressor test (3°C, maximum time 120 seconds), undergone magnetic resonance imaging (MRI) of the brain, and had complete information on covariates. Cox proportional hazards regression models were fitted with time to hand withdrawal from cold exposure as outcome. Gray matter volume was the independent variable, and analyses were adjusted for intracranial volume, age, sex, education level, and cardiovascular risk factors. Additional adjustment was made for chronic pain and depression in subsamples with available information on the respective item. FreeSurfer was used to estimate vertexwise cortical and subcortical gray matter volumes from the T1-weighted MR image. Post hoc analyses were performed on cortical and subcortical volume estimates. Standardized total GMV was associated with risk of hand withdrawal (hazard ratio [HR] 0.81, 95% confidence interval [CI] 0.71-0.93). The effect remained significant after additional adjustment for chronic pain (HR 0.84, 95% CI 0.72-0.97) or depression (HR 0.82, 95% CI 0.71-0.94). In post hoc analyses, positive associations between standardized GMV and pain tolerance were seen in most brain regions, with larger effect sizes in regions previously shown to be associated with pain. In conclusion, our findings indicate that larger GMV is associated with longer pain tolerance in the general population.
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16
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Sirucek L, Ganley RP, Zeilhofer HU, Schweinhardt P. Diffuse noxious inhibitory controls and conditioned pain modulation: a shared neurobiology within the descending pain inhibitory system? Pain 2023; 164:463-468. [PMID: 36017879 PMCID: PMC9916052 DOI: 10.1097/j.pain.0000000000002719] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 06/02/2022] [Accepted: 06/14/2022] [Indexed: 11/26/2022]
Affiliation(s)
- Laura Sirucek
- Department of Chiropractic Medicine, Integrative Spinal Research Group, Balgrist University Hospital, University of Zurich, Zurich, Switzerland
- Neuroscience Center Zurich, University of Zurich, Zurich, Switzerland
| | - Robert Philip Ganley
- Institute for Pharmacology and Toxicology, University of Zurich, Zurich, Switzerland
| | - Hanns Ulrich Zeilhofer
- Neuroscience Center Zurich, University of Zurich, Zurich, Switzerland
- Institute for Pharmacology and Toxicology, University of Zurich, Zurich, Switzerland
- Institute of Pharmaceutical Sciences, ETH Zurich, Zurich, Switzerland
| | - Petra Schweinhardt
- Department of Chiropractic Medicine, Integrative Spinal Research Group, Balgrist University Hospital, University of Zurich, Zurich, Switzerland
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17
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Colman M, Syx D, de Wandele I, Rombaut L, Wilie D, Malfait Z, Meeus M, Malfait AM, Van Oosterwijck J, Malfait F. Sensory profiling in classical Ehlers-Danlos syndrome: a case-control study revealing pain characteristics, somatosensory changes, and impaired pain modulation. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.02.24.23286404. [PMID: 36865307 PMCID: PMC9980260 DOI: 10.1101/2023.02.24.23286404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
Abstract
Pain is one of the most important, yet poorly understood complaints in heritable connective tissue disorders (HCTD) caused by monogenic defects in extracellular matrix molecules. This is particularly the case for Ehlers-Danlos syndromes (EDS), paradigm collagen-related disorders. This study aimed to identify the pain signature and somatosensory characteristics in the rare classical type of EDS (cEDS) caused by defects in type V or rarely type I collagen. We used static and dynamic quantitative sensory testing and validated questionnaires in 19 individuals with cEDS and 19 matched controls. Individuals with cEDS reported clinically relevant pain/discomfort (VAS ≥5/10 in 32% for average pain intensity the past month) and worse health -related quality of life. Altered sensory profile was found in the cEDS group with higher (p=0.04) detection thresholds for vibration stimuli at the lower limb indicating hypoesthesia, reduced thermal sensitivity with more (p<0.001) paradoxical thermal sensations, and hyperalgesia with lower pain thresholds to mechanical (p<0.001) stimuli at both the upper and lower limbs and to cold (p=0.005) stimulation at the lower limb. Using a parallel conditioned pain paradigm, the cEDS group showed significantly smaller antinociceptive responses (p-value between 0.005 and 0.046) suggestive of impaired endogenous central pain modulation. In conclusion, Individuals with cEDS report chronic pain and worse health-related quality of life, and present altered somatosensory perception. This study is the first to systematically investigate pain and somatosensory characteristics in a genetically defined HCTD and provides interesting insights on the possible role of the ECM in the development and persistence of pain.
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Affiliation(s)
- Marlies Colman
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
- Department of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
- Pain in Motion International Research Consortium
| | - Delfien Syx
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
- Department of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
| | - Inge de Wandele
- Department of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
| | - Lies Rombaut
- Department of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
| | - Deborah Wilie
- Department of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
| | - Zoë Malfait
- Department of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
| | - Mira Meeus
- Spine, Head and Pain SPINE Research Unit Ghent, Faculty of Medicine and Health Sciences, Department of Rehabilitation Sciences, Ghent University, Ghent, Belgium
- Pain in Motion International Research Consortium
| | - Anne-Marie Malfait
- Department of Internal Medicine, Division of Rheumatology, Rush University Medical Center, Chicago, Illinois, USA
| | - Jessica Van Oosterwijck
- Spine, Head and Pain SPINE Research Unit Ghent, Faculty of Medicine and Health Sciences, Department of Rehabilitation Sciences, Ghent University, Ghent, Belgium
- Pain in Motion International Research Consortium
| | - Fransiska Malfait
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
- Department of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
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18
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Petersen KKS. Predicting pain after standard pain therapy for knee osteoarthritis - the first steps towards personalized mechanistic-based pain medicine in osteoarthritis. Scand J Pain 2023; 23:40-48. [PMID: 35993966 DOI: 10.1515/sjpain-2022-0082] [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: 06/20/2022] [Accepted: 08/01/2022] [Indexed: 01/17/2023]
Abstract
OBJECTIVES The prevalence of osteoarthritis (OA) is rising, and pain is the hallmark symptom of OA. Pain in OA is complicated and can be influenced by multiple joint-related factors and factors related to, e.g., physiological, epigenetic, and pain sensory profiles. Increasing evidence suggests that a subset of patients with OA are pain sensitive. This can be assessed using quantitative sensory testing (QST). Common treatments of OA are total knee arthroplasty (TKA) and administration of 3-weeks of non-steroidal anti-inflammatory drugs (NSAIDs), which provide pain relief to many patients with OA. However, approx. 20% of patients experience chronic postoperative pain after TKA, whereas NSAIDs provide an average pain relief of approx. 25%. The current topical review focuses on the emerging evidence linking pretreatment QST to the treatment response of TKA and NSAID treatments. CONTENT MEDLINE was systematically searched for all studies from 2000 to 2022 on pretreatment QST, TKA, and NSAIDs. Pre-clinical studies, reviews, and meta-analyses were excluded. SUMMARY Currently, 14 studies on TKA and four studies on NSAIDs have been published with the aim to attempt prediction of the treatment response. The QST methodologies in the studies are inconsistent, but 11/14 (79%) studies on TKA and 4/4 (100%) studies on NSAIDs report statistically significant associations between pretreatment QST and chronic postoperative pain after TKA or analgesic effect after NSAID treatment. The strength of the associations remains low-to-moderate. The most consistent pretreatment QST predictors are pressure pain thresholds, temporal summation of pain, and conditioned pain modulation. OUTLOOK The use of QST as predictors of standard OA treatment is interesting, but the predictive strength remains low-to-moderate. A transition of QST from a research-based setting and into the clinic is not advised until the predictive strength has been improved and the methodology has been standardized.
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Affiliation(s)
- Kristian Kjær-Staal Petersen
- Center for Neuroplasticity and Pain, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark
- Center for Mathematical Modelling of Knee Osteoarthritis, Department of Materials and Production, Aalborg University, Aalborg, Denmark
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19
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Kurien T, Kerslake RW, Graven-Nielsen T, Arendt-Nielsen L, Auer DP, Edwards K, Scammell BE, Petersen KKS. Chronic Postoperative Pain after Total Knee Arthroplasty: The Potential Contributions of Synovitis, Pain Sensitization, and Pain Catastrophizing - An Explorative Study. Eur J Pain 2022; 26:1979-1989. [PMID: 35959735 PMCID: PMC9544145 DOI: 10.1002/ejp.2018] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 08/01/2022] [Accepted: 08/07/2022] [Indexed: 11/10/2022]
Abstract
Background A subset of osteoarthritis patients will experience chronic postoperative pain after total knee arthroplasty (TKA), but the source of pain is unclear. The aim of this exploratory study was to assess patients with and without postoperative pain after TKA using magnetic resonance imaging (MRI), quantitative sensory testing (QST), clinical assessment of pain and assessments of catastrophizing thoughts. Methods Forty‐six patients completed the 6‐month postoperative assessment. MRI findings were scored according to the MRI Osteoarthritis Knee Score recommendation for Hoffa synovitis, effusion size and bone marrow lesions. QST included assessment of pressure pain thresholds (PPTs), temporal summation of pain (TSP) and conditioned pain modulation (CPM). Pain catastrophizing was assessed using the Pain Catastrophizing Scale (PCS). Clinical pain assessment was conducted using a visual analogue scale (VAS, 0–10 cm), and groups of moderate‐to‐severe (VAS > 3) and none‐to‐mild postoperative pain (VAS ≤ 3) were identified. Results Patients with moderate‐to‐severe postoperative pain (N = 15) demonstrated higher grades of Hoffa synovitis (p < 0.001) and effusion size (p < 0.001), lower PPTs (p = 0.039), higher TSP (p = 0.001) and lower CPM (p = 0.014) when compared with patients with none‐to‐mild postoperative pain (N = 31). No significant difference was found in PCS scores between the two groups. Multiple linear regression models found synovitis (p = 0.036), effusion size (p = 0.003), TSP (p = 0.013) and PCS (p < 0.001) as independent parameters contributing to the postoperative pain intensity. Conclusion These exploratory findings could indicate that chronic postoperative pain after TKA is a combination of joint‐related synovitis and effusion, sensitization of central pain mechanisms and potentially pain catastrophizing thoughts, but larger studies are needed to confirm this. Significance The end‐stage treatment of knee osteoarthritis is total knee arthroplasty. Some patients experience chronic postoperative pain after total knee arthroplasty, but the mechanism for chronic postoperative pain is widely unknown. The current study indicates that higher levels postoperative of synovitis and effusion, higher temporal summation of pain and higher pain catastrophizing scores could be associated with higher chronic postoperative pain.
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Affiliation(s)
- Thomas Kurien
- Academic Orthopaedics, Trauma and Sports Medicine, University of Nottingham.,Nottingham Elective Orthopaedic Service (NEOS), Nottingham University Hospitals NHS Trust, Nottingham, UK.,Pain Centre Versus Arthritis, University of Nottingham, UK.,NIHR Nottingham Biomedical Research Centre, University of Nottingham, UK
| | - Robert W Kerslake
- Pain Centre Versus Arthritis, University of Nottingham, UK.,NIHR Nottingham Biomedical Research Centre, University of Nottingham, UK.,Sir Peter Mansfield Imaging Centre, University of Nottingham, UK
| | - Thomas Graven-Nielsen
- Center for Neuroplasticity and Pain (CNAP), Faculty of Medicine, Aalborg University, Denmark
| | - Lars Arendt-Nielsen
- Center for Neuroplasticity and Pain (CNAP), Faculty of Medicine, Aalborg University, Denmark.,Mech-Sense, Department of Gastroenterology and Hepatology, Aalborg University Hospital, Aalborg, Denmark.,Center for Mathematical Modelling of Knee Osteoarthritis, Department of Materials and Production, Aalborg University, Denmark
| | - Dorothee P Auer
- Pain Centre Versus Arthritis, University of Nottingham, UK.,NIHR Nottingham Biomedical Research Centre, University of Nottingham, UK.,Sir Peter Mansfield Imaging Centre, University of Nottingham, UK
| | - Kimberley Edwards
- Academic Orthopaedics, Trauma and Sports Medicine, University of Nottingham.,NIHR Nottingham Biomedical Research Centre, University of Nottingham, UK
| | - Brigitte E Scammell
- Academic Orthopaedics, Trauma and Sports Medicine, University of Nottingham.,Nottingham Elective Orthopaedic Service (NEOS), Nottingham University Hospitals NHS Trust, Nottingham, UK.,Pain Centre Versus Arthritis, University of Nottingham, UK.,NIHR Nottingham Biomedical Research Centre, University of Nottingham, UK
| | - Kristian Kjaer-Staal Petersen
- Center for Neuroplasticity and Pain (CNAP), Faculty of Medicine, Aalborg University, Denmark.,Center for Mathematical Modelling of Knee Osteoarthritis, Department of Materials and Production, Aalborg University, Denmark
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20
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Lyng KD, Andersen JD, Jensen SL, Olesen JL, Arendt‐Nielsen L, Madsen NK, Petersen KK. The influence of exercise on clinical pain and pain mechanisms in patients with subacromial pain syndrome. Eur J Pain 2022; 26:1882-1895. [PMID: 35852027 PMCID: PMC9545950 DOI: 10.1002/ejp.2010] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 06/08/2022] [Accepted: 07/09/2022] [Indexed: 11/17/2022]
Abstract
Background Few studies have investigated the underlying mechanisms for unilateral subacromial pain syndrome (SAPS). Therefore, this study examined (1) if 8‐weeks of exercise could modulate clinical pain or temporal summation of pain (TSP), conditioned pain modulation (CPM), and exercise‐induced hypoalgesia (EIH) and (2) if any of these parameters could predict the effect of 8‐weeks of exercise in patients with unilateral SAPS. Methods Thirty‐seven patients completed a progressive abduction exercise program every other day for 8‐weeks. Worst shoulder pain in full abduction was rated on a numeric rating scale (NRS). Pain pressure thresholds (PPTs), TSP, CPM, EIH, Shoulder Pain and Disability Index (SPADI), Pain Catastrophizing Scale (PCS), PainDETECT questionnaire (PD‐Q), Pain Self‐Efficacy Questionnaire (PSE‐Q) and Pittsburgh Sleep Quality Index (PSQI) were assessed before and after intervention. Results The intervention improved worst pain intensity (p < 0.001), increased the CPM (p < 0.001), improved the sleep scores (p < 0.005) and reduced the PainDETECT ratings (p < 0.001). No changes were observed in PPT, TSP, EIH, SPADI, PCS and PSE‐Q (all p > 0.05). In a linear regression, the combination of all baseline parameters predicted 23.2% variance in absolute change in pain after 8 weeks. Applying backwards elimination to the linear regression yielded that baseline pain intensity combined with TSP predicted 33.8% variance. Conclusion This explorative study suggested reduction in pain, improved sleep quality and increased CPM after 8‐weeks of exercise. Furthermore, the results suggests that low pain intensity and high TSP scores (indicative for pain sensitisation) may predict a lack of pain improvement after exercise.
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Affiliation(s)
- Kristian Damgaard Lyng
- Department of Health Science and Technology, Faculty of Medicine Aalborg University Denmark
- Center for General Practice at Aalborg University, Department of Clinical Medicine, Aalborg University
| | - Jonas Dahl Andersen
- Department of Health Science and Technology, Faculty of Medicine Aalborg University Denmark
| | - Steen Lund Jensen
- Department of Orthopaedic Surgery, Shoulder Unit Aalborg University Hospital, Farsø Hospital
- Department of Clinical Medicine, Faculty of Medicine Aalborg University Aalborg Denmark
| | - Jens Lykkegaard Olesen
- Center for General Practice at Aalborg University, Department of Clinical Medicine, Aalborg University
| | - Lars Arendt‐Nielsen
- Center for Neuroplasticity and Pain (CNAP), SMI, Department of Health Science and Technology, Faculty of Medicine Aalborg University Aalborg Denmark
- Department of Gastroenterology and Hepatology, Mech‐Sense Aalborg University Hospital Aalborg Denmark
| | - Niels Kragh Madsen
- Department of Orthopaedic Surgery, Shoulder Unit Aalborg University Hospital, Farsø Hospital
| | - Kristian Kjær Petersen
- Department of Health Science and Technology, Faculty of Medicine Aalborg University Denmark
- Center for Neuroplasticity and Pain (CNAP), SMI, Department of Health Science and Technology, Faculty of Medicine Aalborg University Aalborg Denmark
- Center for Mathematical Modeling of Knee Osteoarthritis (MathKOA), Department of Material and Production, Faculty of Engineering and Science Aalborg University
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21
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Peterson JA, Lohman C, Larson RD, Bemben MG, Black CD. Body Composition does not influence Conditioned Pain Modulation and Exercise Induced Hyperalgesia in Healthy Males and Females. Eur J Pain 2022; 26:1800-1810. [PMID: 35802068 DOI: 10.1002/ejp.2005] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 06/09/2022] [Accepted: 07/03/2022] [Indexed: 11/07/2022]
Abstract
BACKGROUND Obese individuals report a higher susceptibility to chronic pain. Females are more likely to have chronic pain and excess adipose tissue. Chronic pain is associated with dysfunctional pain modulatory mechanisms. Body composition differences may be associated with pain modulation differences in males and females. The purpose of this study was to investigate body composition (lean vs fat mass) differences and pain modulatory functioning in healthy males and females. METHODS Pressure pain thresholds (PPT) of 96 participants (47M; 49F) were assessed in both arms and legs before and after a double footed ice bath (2°C) for 1min and an isometric knee extension, time to failure task. The difference between post and pre measures was defined conditioned pain modulatory (CPM) response (ice bath) and exercise induced hypoalgesia (EIH) response. Whole body and site-specific fat and lean tissue were assessed via DXA scan. RESULTS Sex differences were found in whole body lean mass (61.5±6.7kg vs 41.2±5.4kg; P<0.001) but not fat mass amount (17.2±10.5kg vs 21.0±9.7kg; P=0.068). No effect of sex was found between limb CPM (P=0.237) and limb EIH (P=0.512). When controlling for lean mass there was no significant effect of sex on CPM (P=0.732) or EIH (P=0.474) response. Similar findings were found for fat mass. CONCLUSION The lack of difference suggests that males and females have similar modulatory functioning. It appears that in healthy adults free from chronic pain, neither fat mass nor lean mass has an influence on endogenous pain modulatory function.
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Affiliation(s)
- Jessica A Peterson
- Department of Health and Exercise Science, University of Oklahoma, Norman, OK.,Department of Community Dentistry and Behavioral Science, University of Florida Gainesville, FL
| | - Cameron Lohman
- Department of Health and Exercise Science, University of Oklahoma, Norman, OK
| | - Rebecca D Larson
- Department of Health and Exercise Science, University of Oklahoma, Norman, OK
| | - Michael G Bemben
- Department of Health and Exercise Science, University of Oklahoma, Norman, OK
| | - Christopher D Black
- Department of Health and Exercise Science, University of Oklahoma, Norman, OK
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22
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Petersen KKS, Drewes AM, Olesen AE, Ammitzbøll N, Bertoli D, Brock C, Arendt-Nielsen L. The Effect of Duloxetine on Mechanistic Pain Profiles, Cognitive Factors, and Clinical Pain in Patients with Painful Knee Osteoarthritis - A Randomized, Double-Blind, Placebo-Controlled, Crossover Study. Eur J Pain 2022; 26:1650-1664. [PMID: 35638317 PMCID: PMC9541875 DOI: 10.1002/ejp.1988] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 05/03/2022] [Accepted: 05/21/2022] [Indexed: 11/11/2022]
Abstract
BACKGROUND Duloxetine is indicated in the management of pain in osteoarthritis. Evidence suggests that duloxetine modulate central pain mechanisms and cognitive factors, and these factors are assumed contributing to the analgesic effect. This proof-of-mechanism, randomized, placebo-controlled, crossover, double-blinded trial evaluated the effect of duloxetine on quantitative sensory testing (QST), cognitive factors, and clinical pain in patients with osteoarthritis and to predict the analgesic effect. METHODS Twenty-five patients completed this cross-over study with either 18-weeks duloxetine (maximum 60 mg/daily) followed by placebo or vice-versa. Pressure pain thresholds, temporal summation of pain, and conditioned pain modulation were assessed using cuff algometry. The Hospital Anxiety and Depression Scale and the Pain Catastrophizing Scale evaluated cognitive factors. Clinical pain was assessed using Brief Pain Inventory and Western Ontario and McMaster Universities Osteoarthritis Index. Linear regression models were used to predict the analgesic effect of duloxetine. RESULTS Depending on the clinical pain outcome, 40-68% of patients were classified as responders to duloxetine. Linear regression models predicted the analgesic effect (predictive value of 45-75% depending on clinical pain outcome parameter) using a combination of pre-treatment QST parameters, cognitive factors, and clinical pain. No significant changes were found for QST, cognitive factors, or clinical pain on a group level when comparing duloxetine to placebo. CONCLUSION A combination of pre-treatment QST, cognitive factors, and clinical pain was able to predict the analgesic response of duloxetine. However, in this relatively small study, duloxetine did not selectively modulate QST, cognitive factors, or clinical pain intensity when compared with placebo.
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Affiliation(s)
- Kristian Kjaer-Staal Petersen
- Center for Neuroplasticity and Pain, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark
| | - Asbjørn Mohr Drewes
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark.,Mech-Sense, Department of Gastroenterology and Hepatology, Aalborg University Hospital, Aalborg, Denmark
| | - Anne Estrup Olesen
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark.,Department of Clinical Pharmacology, Aalborg University Hospital, Aalborg, Denmark
| | - Nadia Ammitzbøll
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark.,Mech-Sense, Department of Gastroenterology and Hepatology, Aalborg University Hospital, Aalborg, Denmark
| | - Davide Bertoli
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark.,Mech-Sense, Department of Gastroenterology and Hepatology, Aalborg University Hospital, Aalborg, Denmark
| | - Christina Brock
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark.,Mech-Sense, Department of Gastroenterology and Hepatology, Aalborg University Hospital, Aalborg, Denmark
| | - Lars Arendt-Nielsen
- Center for Neuroplasticity and Pain, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark.,Mech-Sense, Department of Gastroenterology and Hepatology, Aalborg University Hospital, Aalborg, Denmark
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23
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Peron R, Rampazo ÉP, Liebano RE. Traditional acupuncture and laser acupuncture in chronic nonspecific neck pain: study protocol for a randomized controlled trial. Trials 2022; 23:408. [PMID: 35578302 PMCID: PMC9109358 DOI: 10.1186/s13063-022-06349-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 04/25/2022] [Indexed: 09/02/2023] Open
Abstract
Background Nonspecific neck pain is a multifactorial and very common condition in adult individuals, traditional acupuncture (TA) and laser acupuncture (LA) may be treatment options for certain individuals in such a condition. However, no reports were found in the literature comparing the effectiveness of TA and LA in cases of chronic nonspecific neck pain. Therefore, the aim of the present study is to investigate the effectiveness of TA and LA therapies in individuals with chronic nonspecific neck pain, noting which one is more efficient for this condition. The result of this research will have direct implications for pain management and, consequently, may benefit individuals suffering from nonspecific chronic neck pain. Methods/design This will be a controlled and randomized clinical trial. Eighty-four individuals will be recruited and distributed equally and randomly into 3 groups: TA (which will receive the acupuncture treatment with needles), LA (which will receive the laser acupuncture treatment), and Sham (who will receive the placebo intervention). The acupuncture points (Tianzhu, Fengchi, Jianjing, and Jianzhongshu) will be stimulated bilaterally. The primary outcome will be pain intensity, determined using the Numerical Rating Scale. The secondary outcomes will be pressure pain threshold, temporal summation of pain, conditioned pain modulation, use of analgesic medicines after treatment, and the global perceived effect scale. The assessments will be performed immediately before and after the treatment, which will be a single session, at the follow-up and 1 month after the end of the treatments; evaluation will be made of the pain intensity and the global perceived effect. Statistical analysis of the data obtained will consider a significance level of p < 0.05. Discussion This study will provide evidence concerning the effects of LA treatment, in comparison with TA and sham intervention, leading to benefits for individuals suffering from chronic nonspecific neck pain. Trial registration Brazilian Registry of Clinical Trials - ReBEC RBR-7vbw5gd. Date of registration: August 06th, 2021.
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24
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Nuwailati R, Bobos P, Drangsholt M, Curatolo M. Reliability of conditioned pain modulation in healthy individuals and chronic pain patients: a systematic review and meta-analysis. Scand J Pain 2022; 22:262-278. [PMID: 35142147 DOI: 10.1515/sjpain-2021-0149] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 01/21/2022] [Indexed: 01/20/2023]
Abstract
OBJECTIVES Conditioned pain modulation (CPM) is a psychophysical parameter that is used to reflect the efficacy of endogenous pain inhibition. CPM reliability is important for research and potential clinical applications. The aim of this systematic review and meta-analysis was to evaluate the reliability of CPM tests in healthy individuals and chronic pain patients. METHODS We searched three databases for peer-reviewed studies published from inception to October 2020: EMBASE, Web of Science and NCBI. Risk of bias and the quality of the included studies were assessed. A meta-analysis with a random effects model was conducted to estimate intraclass correlation coefficients (ICCs). RESULTS Meta-analysis was performed on 25 papers that examined healthy participants (k=21) or chronic pain patients (k=4). The highest CPM intra-session reliability was with pressure as test stimulus (TS) and ischemic pressure (IP) or cold pressor test (CPT) as conditioning stimulus (CS) in healthy individuals (ICC 0.64, 95% CI 0.45-0.77), and pressure as TS with CPT as CS in patients (ICC 0.77, 95% CI 0.70-0.82). The highest inter-session ICC was with IP as TS and IP or CPT as CS (ICC 0.51, 95% CI 0.42-0.59) in healthy subjects. The only data available in patients for inter-session reliability were with pressure as TS and CPT as CS (ICC 0.44, 95% CI 0.11-0.69). Quality ranged from very good to excellent using the QACMRR checklist. The majority of the studies (24 out of 25) scored inadequate in Kappa coefficient reporting item of the COSMIN-ROB checklist. CONCLUSIONS Pressure and CPT were the TS and CS most consistently associated with good to excellent intra-session reliability in healthy volunteers and chronic pain patients. The inter-session reliability was fair or less for all modalities, both in healthy volunteers and chronic pain patients.
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Affiliation(s)
- Rania Nuwailati
- Department of Oral Health Sciences, University of Washington, Seattle, WA, USA
- Department of Oral Medicine, University of Washington, Seattle, WA, USA
| | - Pavlos Bobos
- Applied Health Research Centre (AHRC), The HUB, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON, Canada
- Department of Clinical Epidemiology and Health Care Research, Dalla Lana School of Public Health, Institute of Healthy Policy Management and Evaluation, University of Toronto, Toronto, ON, Canada
| | - Mark Drangsholt
- Department of Oral Health Sciences, University of Washington, Seattle, WA, USA
- Department of Oral Medicine, University of Washington, Seattle, WA, USA
| | - Michele Curatolo
- Department of Anesthesiology and Pain Medicine, School of Medicine, University of Washington, Seattle, WA, USA
- Harborview Injury Prevention and Research Center, Seattle, WA, USA
- CLEAR Research Center for Musculoskeletal Disorders, Seattle, WA, USA
- Department of Health Science and Technology, Center for Sensory-Motor Interaction, Aalborg University, Aalborg, Denmark
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25
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El-Sayed R, Fauchon C, Kim JA, Firouzian S, Osborne NR, Besik A, Mills EP, Bhatia A, Davis KD. The Potential Clinical Utility of Pressure-Based vs. Heat-Based Paradigms to Measure Conditioned Pain Modulation in Healthy Individuals and Those With Chronic Pain. FRONTIERS IN PAIN RESEARCH 2022; 2:784362. [PMID: 35295516 PMCID: PMC8915758 DOI: 10.3389/fpain.2021.784362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 12/06/2021] [Indexed: 11/13/2022] Open
Abstract
Conditioned pain modulation (CPM) is a physiological measure thought to reflect an individual's endogenous pain modulation system. CPM varies across individuals and provides insight into chronic pain pathophysiology. There is growing evidence that CPM may help predict individual pain treatment outcome. However, paradigm variabilities and practical issues have impeded widespread clinical adoption of CPM assessment. This study aimed to compare two CPM paradigms in people with chronic pain and healthy individuals. A total of 30 individuals (12 chronic pain, 18 healthy) underwent two CPM paradigms. The heat CPM paradigm acquired pain intensity ratings evoked by a test stimulus (TS) applied before and during the conditioning stimulus (CS). The pressure CPM paradigm acquired continuous pain intensity ratings of a gradually increasing TS, before and during CS. Pain intensity was rated from 0 (no pain) to 100 (worst pain imaginable); Pain50 is the stimulus level for a response rated 50. Heat and pressure CPM were calculated as a change in TS pain intensity ratings at Pain50, where negative CPM scores indicate pain inhibition. We also determined CPM in the pressure paradigm as change in pressure pain detection threshold (PDT). We found that in healthy individuals the CPM effect was significantly more inhibitory using the pressure paradigm than the heat paradigm. The pressure CPM effect was also significantly more inhibitory when based on changes at Pain50 than at PDT. However, in individuals with chronic pain there was no significant difference in pressure CPM compared to heat or PDT CPM. There was no significant correlation between clinical pain measures (painDETECT and Brief Pain Inventory) and paradigm type (heat vs. pressure), although heat-based CPM and painDETECT scores showed a trend. Importantly, the pressure paradigm could be administered in less time than the heat paradigm. Thus, our study indicates that in healthy individuals, interpretation of CPM findings should consider potential modality-dependent effects. However, in individuals with chronic pain, either heat or pressure paradigms can similarly be used to assess CPM. Given the practical advantages of the pressure paradigm (e.g., short test time, ease of use), we propose this approach to be well-suited for clinical adoption.
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Affiliation(s)
- Rima El-Sayed
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada.,Krembil Brain Institute, Division of Brain, Imaging, and Behaviour, University Health Network, Toronto, ON, Canada
| | - Camille Fauchon
- Krembil Brain Institute, Division of Brain, Imaging, and Behaviour, University Health Network, Toronto, ON, Canada
| | - Junseok A Kim
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada.,Krembil Brain Institute, Division of Brain, Imaging, and Behaviour, University Health Network, Toronto, ON, Canada
| | - Shahrzad Firouzian
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada.,Krembil Brain Institute, Division of Brain, Imaging, and Behaviour, University Health Network, Toronto, ON, Canada
| | - Natalie R Osborne
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada.,Krembil Brain Institute, Division of Brain, Imaging, and Behaviour, University Health Network, Toronto, ON, Canada
| | - Ariana Besik
- Krembil Brain Institute, Division of Brain, Imaging, and Behaviour, University Health Network, Toronto, ON, Canada
| | - Emily P Mills
- Krembil Brain Institute, Division of Brain, Imaging, and Behaviour, University Health Network, Toronto, ON, Canada
| | - Anuj Bhatia
- Krembil Brain Institute, Division of Brain, Imaging, and Behaviour, University Health Network, Toronto, ON, Canada.,Department of Anesthesia and Pain Medicine, Toronto Western Hospital, University of Toronto, Toronto, ON, Canada
| | - Karen D Davis
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada.,Krembil Brain Institute, Division of Brain, Imaging, and Behaviour, University Health Network, Toronto, ON, Canada.,Department of Surgery, University of Toronto, Toronto, ON, Canada
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26
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Sendel M, Lienau F, Fischer D, Moll J, Koch S, Forstenpointner J, Binder A, Baron R. The descending pain modulation system predicts short term efficacy of multimodal pain therapy - an observational prospective cohort study. Postgrad Med 2022; 134:277-287. [PMID: 34895019 DOI: 10.1080/00325481.2021.2017646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
OBJECTIVES Treating chronic pain patients with multimodal pain therapy (MMPT) alters perception, awareness, and processing of pain at multiple therapeutic levels. Several clinical observations suggest that the effects of therapy may go beyond the possible sum of each level of therapy and may be due to a central descending inhibitory effect measurable by conditioned pain modulation (CPM). Thus, we investigated whether CPM is able to identify a group of patients that benefit particularly from MMPT. METHODS This was an observational prospective cohort study. Patients were hospitalized on a special pain medicine ward with specially trained staff for 10 days. The patients were questioned and had investigations before and shortly after MMPT and were followed-up on 3 months post discharge. Before and after treatment, subjects were investigated via CPM and quantitative sensory testing (QST) as well as completing questionnaires. The study was registered in the German Clinical Trials Register (DRKS00006850). RESULTS During the study period of 24 months, 224 chronic pain patients were recruited. 51 percent of patients completed the study period. There was an improvement in overall groups regarding all domains assessed, lasting beyond the end of the intervention. Patients with a sufficient CPM effect, defined as a reduction in pain during the conditioning stimulus, at baseline did show a more pronounced reduction in mean pain ratings than those without. This was not the case 3 months after therapy. Furthermore, sufficient CPM was identified as a predictor for pain reduction using a linear regression model. CONCLUSION In conclusion, this study shows that while a heterogeneous group of patients with chronic pain disorders does sustainably benefit from MMPT in general, patients with a sufficient CPM effect do show a more pronounced decrease in pain ratings directly after therapy in comparison to those without.
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Affiliation(s)
- M Sendel
- Division of Neurological Pain Research and -therapy, Department of Neurology, University Hospital Schleswig-Holstein, Kiel, Germany
| | - F Lienau
- Katholisches Marienkrankenhaus, Department. Of Neurology, Hamburg, Germany
| | - D Fischer
- Asklepios Klinik Nord, Center of Interdisciplinary Pain Therapy, Hamburg, Germany
| | - J Moll
- Asklepios Klinik Nord, Center of Interdisciplinary Pain Therapy, Hamburg, Germany
| | - S Koch
- Institute of Medical Informatics and Statistics, University Hospital Schleswig-Holstein, Kiel, Germany
| | - J Forstenpointner
- Division of Neurological Pain Research and -therapy, Department of Neurology, University Hospital Schleswig-Holstein, Kiel, Germany
| | - A Binder
- Division of Neurological Pain Research and -therapy, Department of Neurology, University Hospital Schleswig-Holstein, Kiel, Germany.,Klinikum Saarbrücken, Department. Of Neurology
| | - R Baron
- Division of Neurological Pain Research and -therapy, Department of Neurology, University Hospital Schleswig-Holstein, Kiel, Germany
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Ammitzbøll N, Arendt-Nielsen L, Bertoli D, Brock C, Olesen AE, Kappel A, Drewes AM, Petersen KK. A mechanism-based proof of concept study on the effects of duloxetine in patients with painful knee osteoarthritis. Trials 2021; 22:958. [PMID: 34961547 PMCID: PMC8710922 DOI: 10.1186/s13063-021-05941-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 12/15/2021] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND The global burden of osteoarthritis (OA) is steadily increasing due to demographic and lifestyle changes. The nervous system can undergo peripheral and central neuroplastic changes (sensitization) in patients with OA impacting the options to manage the pain adequately. As a result of sensitization, patients with OA show lower pressure pain thresholds (PPTs), facilitated temporal summation of pain (TSP), and impaired conditioned pain modulation (CPM). As traditional analgesics (acetaminophen and non-steroidal anti-inflammatory drugs) are not recommended for long-term use in OA, more fundamental knowledge related to other possible management regimes are needed. Duloxetine is a serotonin-noradrenalin reuptake inhibitor, and analgesic effects are documented in patients with OA although the underlying fundamental mechanisms remain unclear. The descending pain inhibitory control system is believed to be dependent on serotonin and noradrenalin. We hypothesized that the analgesic effect of duloxetine could act through these pathways and consequently indirectly reduce pain and sensitization. The aim of this mechanistic study is to investigate if PPTs, TSP, CPM, and clinical pain parameters are modulated by duloxetine. METHODS This proof of concept study is a randomized, placebo-controlled, double-blinded, crossover trial, which compares PPTs, TSP, and CPM before and after 18 weeks of duloxetine and placebo in forty patients with knee OA. The intervention periods include a titration period (2 weeks), treatment period (60 mg daily for 14 weeks), and a discontinuation period (2 weeks). Intervention periods are separated by 2 weeks. DISCUSSION Duloxetine is recommended for the treatment of chronic pain, but the underlying mechanisms of the analgesic effects are currently unknown. This study will investigate if duloxetine can modify central pain mechanisms and thereby provide insights into the underlying mechanisms of the analgesic effect. TRIAL REGISTRATION ClinicalTrials.gov NCT04224584 . Registered on January 6, 2020. EudraCT 2019-003437-42 . Registered on October 22, 2019. The North Denmark Region Committee on Health Research Ethics N-20190055. Registered on October 31, 2019.
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Affiliation(s)
- Nadia Ammitzbøll
- Department of Gastroenterology and Hepatology, Aalborg University Hospital, Aalborg, Denmark
| | - Lars Arendt-Nielsen
- Center for Neuroplasticity and Pain, SMI, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark.,Center for Neuroplasticity and Pain, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark
| | - Davide Bertoli
- Department of Gastroenterology and Hepatology, Aalborg University Hospital, Aalborg, Denmark.,Department of Clinical Medicine, Faculty of Medicine, Aalborg University, Aalborg, Denmark
| | - Christina Brock
- Department of Gastroenterology and Hepatology, Aalborg University Hospital, Aalborg, Denmark.,Department of Clinical Medicine, Faculty of Medicine, Aalborg University, Aalborg, Denmark
| | - Anne Estrup Olesen
- Department of Clinical Medicine, Faculty of Medicine, Aalborg University, Aalborg, Denmark.,Department of Clinical Pharmacology, Aalborg University Hospital, Aalborg, Denmark
| | - Andreas Kappel
- Department of Clinical Medicine, Faculty of Medicine, Aalborg University, Aalborg, Denmark.,Department of Orthopaedics, Aalborg University Hospital, Aalborg, Denmark
| | - Asbjørn Mohr Drewes
- Department of Gastroenterology and Hepatology, Aalborg University Hospital, Aalborg, Denmark.,Department of Clinical Medicine, Faculty of Medicine, Aalborg University, Aalborg, Denmark
| | - Kristian Kjær Petersen
- Center for Neuroplasticity and Pain, SMI, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark. .,Center for Neuroplasticity and Pain, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark.
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Rogers ML, Gallyer AJ, Dougherty SP, Gorday JY, Nelson JA, Teasdale OD, Joiner TE. Are all pain tolerance tasks the same? Convergent validity of four behavioral pain tolerance tasks, self-reported capability for suicide, and lifetime self-injurious behaviors. J Clin Psychol 2021; 77:2929-2942. [PMID: 34825357 DOI: 10.1002/jclp.23283] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 10/06/2021] [Indexed: 12/15/2022]
Abstract
OBJECTIVES Discrepancies persist regarding the extent to which different pain measures provide similar information and relate to capability for suicide and self-injurious behaviors. This study examined pain threshold, tolerance, and persistence across four modalities (cold, heat, pressure, shock) and assessed associations with self-reported capability for suicide, non-suicidal self-injury (NSSI), and suicide attempts. METHODS A sample of 211 students who reported lifetime suicidal ideation completed four behavioral pain tasks and self-reported on capability for suicide, NSSI, and self-injurious behaviors. RESULTS All pain thresholds, tolerances, and persistences were positively correlated across the four tasks. Pain facets were related to self-reported capability for suicide with small effect sizes but generally did not differ across suicide attempt or NSSI histories. CONCLUSIONS Pain thresholds, tolerances, and persistences demonstrated convergent validity across the four modalities, suggesting that these tasks provide similar information. Although the relation between pain and self-injurious behaviors remains unclear, these tasks can generally be used interchangeably.
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Affiliation(s)
- Megan L Rogers
- Department of Psychiatry, Icahn School of Medicine, Mount Sinai Beth Israel, New York, New York, USA
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Sean M, Coulombe-Lévêque A, Bordeleau M, Vincenot M, Gendron L, Marchand S, Léonard G. Comparison of Thermal and Electrical Modalities in the Assessment of Temporal Summation of Pain and Conditioned Pain Modulation. FRONTIERS IN PAIN RESEARCH 2021; 2:659563. [PMID: 35295416 PMCID: PMC8915752 DOI: 10.3389/fpain.2021.659563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 08/16/2021] [Indexed: 11/29/2022] Open
Abstract
Temporal summation of pain (TSP) and conditioned pain modulation (CPM) can be measured using a thermode and a cold pressor test (CPT). Unfortunately, these tools are complex, expensive, and are ill-suited for routine clinical assessments. Building on the results from an exploratory study that attempted to use transcutaneous electrical nerve stimulation (TENS) to measure CPM and TSP, the present study assesses whether a “new” TENS protocol can be used instead of the thermode and CPT to measure CPM and TSP. The objective of this study was to compare the thermode/CPT protocol with the new TENS protocol, by (1) measuring the association between the TSP evoked by the two protocols; (2) measuring the association between the CPM evoked by the two protocols; and by (3) assessing whether the two protocols successfully trigger TSP and CPM in a similar number of participants. We assessed TSP and CPM in 50 healthy participants, using our new TENS protocol and a thermode/CPT protocol (repeated measures and randomized order). In the TENS protocol, both the test stimulus (TS) and the conditioning stimulus (CS) were delivered using TENS; in the thermode/CPT protocol, the TS was delivered using a thermode and the CS consisted of a CPT. There was no association between the response evoked by the two protocols, neither for TSP nor for CPM. The number of participants showing TSP [49 with TENS and 29 with thermode (p < 0.001)] and CPM [16 with TENS and 30 with thermode (p = 0.01)] was different in both protocols. Our results suggest that response to one modality does not predict response to the other; as such, TENS cannot be used instead of a thermode/CPT protocol to assess TSP and CPM without significantly affecting the results. Moreover, while at first glance it appears that TENS is more effective than the thermode/CPT protocol to induce TSP, but less so to induce CPM, these results should be interpreted carefully. Indeed, TSP and CPM response appear to be modality-dependent as opposed to an absolute phenomenon, and the two protocols may tap into entirely different mechanisms, especially in the case of TSP.
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Affiliation(s)
- Monica Sean
- Research Centre on Aging, School of Rehabilitation, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Alexia Coulombe-Lévêque
- Research Centre on Aging, School of Rehabilitation, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Martine Bordeleau
- Research Centre on Aging, School of Rehabilitation, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Matthieu Vincenot
- Research Centre on Aging, School of Rehabilitation, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Louis Gendron
- Department of Pharmacology-Physiology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Serge Marchand
- Department of Neurosurgery, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Guillaume Léonard
- Research Centre on Aging, School of Rehabilitation, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada
- *Correspondence: Guillaume Léonard
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Pain Catastrophizing, Self-reported Disability, and Temporal Summation of Pain Predict Self-reported Pain in Low Back Pain Patients 12 Weeks After General Practitioner Consultation: A Prospective Cohort Study. Clin J Pain 2021; 36:757-763. [PMID: 32701525 DOI: 10.1097/ajp.0000000000000865] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVES Patients with low back pain (LBP) often demonstrate pain sensitization, high degree of pain catastrophizing, and psychological distress. This study investigated whether pain sensitization mechanisms, the Pain Catastrophizing Scale (PCS), and Start Back Screening Tool were associated with pain in recurrent LBP patients 12 weeks after consulting their general practitioner (GP). MATERIALS AND METHODS In 45 LBP patients, pressure pain thresholds, temporal summation of pain (TSP), conditioned pain modulation (CPM), the Roland Morris Disability Questionnaire (RMDQ), and the PCS were assessed before consultation. Patients were classified into low to medium or high risk of poor prognosis on the basis of the Start Back Screening Tool. Worst pain within the last 24 hours was assessed on a visual analogue scale (VAS) at inclusion and 12 weeks after GP consultation. RESULTS VAS scores were reduced after 12 weeks in the low-to-medium (N=30, P<0.05), but not the high-risk group (N=15, P=0.40). RMDQ was reduced after 12 weeks (P<0.001), but with no difference between the groups. PCS was reduced in the low-to-medium and the high-risk group (P<0.05). TSP was significantly higher at follow-up in the high-risk group compared with the low-to-medium-risk group (P<0.05). A linear regression model explained 54.9% of the variance in VAS scores at follow-up utilizing baseline assessments of TSP, RMDQ, and PCS. DISCUSSION This study indicate that patients with LBP and high self-reported disability, high pain catastrophizing, and facilitated TSP assessed when consulting the GP might predictive poor pain progression 12 weeks after the consultation.
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Larsen DB, Laursen M, Edwards RR, Simonsen O, Arendt-Nielsen L, Petersen KK. The Combination of Preoperative Pain, Conditioned Pain Modulation, and Pain Catastrophizing Predicts Postoperative Pain 12 Months After Total Knee Arthroplasty. PAIN MEDICINE 2021; 22:1583-1590. [PMID: 33411890 DOI: 10.1093/pm/pnaa402] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
OBJECTIVES Approximately 20% of knee osteoarthritis patients undergoing total knee arthroplasty (TKA) report chronic postoperative pain. Studies suggest that preoperative variables such as impaired descending pain control, catastrophizing, function, and neuropathic pain-like symptoms may predict postoperative pain 12 months after TKA, but the combined prediction value of these factors has not been tested. The current prospective cohort study aimed to combine preoperative risk factors to investigate the predictive value for postoperative pain 12 months after TKA. DESIGN Prospective cohort with follow-up 12 months after surgery. PATIENTS A consecutive sample of 131 knee osteoarthritis patients undergoing TKA. METHODS Pain intensity, Pain Catastrophizing Scale (PCS) scores, PainDETECT Questionnaire scores, conditioned pain modulation (CPM), and Oxford Knee Score (OKS) were obtained before and 12 months after TKA. RESULTS TKA improved pain (P < 0.001), PCS scores (P < 0.001), PainDETECT Questionnaire scores (P < 0.001), and OKSs (P < 0.001). Preoperative pain correlated with preoperative PCS scores (r = 0.38, P < 0.001), PainDETECT scores (r = 0.53, P < 0.001), and OKSs (r = -0.25, P = 0.001). Preoperative PainDETECT scores were associated with preoperative PCS scores (r = 0.53, P < 0.001) and OKSs (r = -0.25, P = 0.002). Higher postoperative pain was correlated with high preoperative pain (r = 0.424, P < 0.001), PCS scores (r = 0.33, P < 0.001), PainDETECT scores (r = 0.298, P = 0.001), and lower CPM (r = -0.18, P = 0.04). The combination of preoperative pain, PCS score, and CPM explained 20.5% of variance in follow-up pain. PCS scores had a significant effect on pain trajectory when accounting for patient variance (t = 14.41, P < 0.0005). CONCLUSION The combination of high preoperative clinical pain intensity, high levels of pain catastrophizing thoughts, and impaired CPM may predict long-term postoperative pain 12 months after surgery.
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Affiliation(s)
- Dennis Boye Larsen
- SMI, Faculty of Medicine, Department of Health Science and Technology, Aalborg, Denmark.,Center for Neuroplasticity and Pain (CNAP), SMI, Faculty of Medicine, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Mogens Laursen
- Orthopaedic Surgery Research Unit, Aalborg University Hospital, Aalborg, Denmark
| | - Robert R Edwards
- Pain Management Center, Brigham & Women's Hospital, Chestnut Hill, Massachusetts, USA
| | - Ole Simonsen
- Orthopaedic Surgery Research Unit, Aalborg University Hospital, Aalborg, Denmark
| | - Lars Arendt-Nielsen
- SMI, Faculty of Medicine, Department of Health Science and Technology, Aalborg, Denmark.,Center for Neuroplasticity and Pain (CNAP), SMI, Faculty of Medicine, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Kristian Kjær Petersen
- SMI, Faculty of Medicine, Department of Health Science and Technology, Aalborg, Denmark.,Center for Neuroplasticity and Pain (CNAP), SMI, Faculty of Medicine, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
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Kovacevic M, Klicov L, Vuklis D, Neblett R, Knezevic A. Test-retest reliability of pressure pain threshold and heat pain threshold as test stimuli for evaluation of conditioned pain modulation. Neurophysiol Clin 2021; 51:433-442. [PMID: 34304974 DOI: 10.1016/j.neucli.2021.06.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 06/29/2021] [Accepted: 06/29/2021] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVES There is growing interest in conditioned pain modulation (CPM) protocols for evaluating the function of the descending pain-modulatory system in clinical settings. The aim of this study was to evaluate test-retest reliability of a CPM protocol with contact heat as a conditioning stimulus (CS) and two test stimuli (pressure pain threshold (PPT) and heat pain threshold (HPT)), all applied within one session. In addition, gender and age differences were evaluated. METHODS The study included 87 healthy subjects (average age 37.95 ± 12.02 years, 57.5% females). The magnitude of the results of the CPM test was calculated as the difference between subject-reported pain thresholds before and after application of the CS. To assess the reliability of the protocol, a subgroup of 66 subjects underwent re-test after 14±1 days. In order to investigate the influence of age on the CPM magnitude, subjects were divided into subgroups (20-29, 30-39, 40-49, 50-59 years). RESULTS The pain thresholds for both test stimuli (TS) were significantly higher following the application of the CS (p < 0.001). Values of the interclass correlation coefficient (ICC) for the CPM with PPT as the TS indicated good reliability (ICC=0.631, 95% CI:0.365-0.782), while those for the HPT indicated poor reliability (ICC=0.328, 95% CI:-0.067-0.582). Significant differences in CPM between genders were found for both TS. Significant CPM differences were not detected among the four age subgroups for either TS. CONCLUSIONS CPM effects can be successfully induced with both PPT and HPT as a TS, but PPT showed significantly higher reliability.
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Affiliation(s)
| | - Ljiljana Klicov
- Medical Rehabilitation Clinic, Clinical Centre of Vojvodina, Novi Sad, Serbia
| | - Dragana Vuklis
- University of Novi Sad, Faculty of Medicine, Novi Sad, Serbia
| | - Randy Neblett
- PRIDE Research Foundation, Dallas, TX, United States of America
| | - Aleksandar Knezevic
- University of Novi Sad, Faculty of Medicine, Novi Sad, Serbia; Medical Rehabilitation Clinic, Clinical Centre of Vojvodina, Novi Sad, Serbia
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Palsson TS, Doménech-García V, Boudreau SS, Graven-Nielsen T. Pain referral area is reduced by remote pain. Eur J Pain 2021; 25:1804-1814. [PMID: 33987881 DOI: 10.1002/ejp.1792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 05/02/2021] [Indexed: 11/10/2022]
Abstract
BACKGROUND Endogenous pain inhibitory mechanisms are known to reduce pain intensity, but whether they influence the size and distribution of pain referral is unclear. This study aimed to determine if referred pain is reduced by applying a remote, conditioning painful stimulus. METHODS Twenty-four healthy men participated in this randomized, crossover study with a control and conditioning session. Referred pain was induced from the infraspinatus muscle (dominant side) by a painful pressure for 60 s. When applying pressure, the intensity was adjusted to a local pain intensity of 7/10 on a numerical rating scale. In the conditioning session, tonic painful pressure was simultaneously applied to the non-dominant leg during induction of referred pain. The area of referred pain was drawn onto a digital body chart and size extracted for data analysis. RESULTS For the total group and in a subgroup with distinct patterns of referred pain (n = 15/24), the pain area perceived in the back and front+back was smaller during the conditioning compared with the control (p < 0.05). No significant difference was found between sessions in a subgroup only demonstrating local pain (n = 9/24). CONCLUSIONS Engaging the descending noxious inhibitory control reduced the size of pain areas predominately when distinct pain referral was present. Assuming a conditioning effect of descending inhibitory control acting on dorsal horn neurons, these findings may indicate that mechanisms underlying pain referral can be modulated by endogenous control. The findings may indicate that referred pain may be a useful proxy to evaluate sensitivity of central pain mechanisms as previously suggested. SIGNIFICANCE The current results indicate a link between endogenous inhibition and pain referral. Descending inhibitory control effects on pain referral support a spinal mechanism involved in pain referral. Future studies should investigate whether the spatial characteristics of referred pain (e.g. size, frequency of affected body regions and distribution away from the primary nociceptive stimulus) can useful to evaluate the efficiency of endogenous pain modulation.
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Affiliation(s)
- Thorvaldur S Palsson
- Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Victor Doménech-García
- Department of Physiotherapy, Faculty of Health Sciences, Universidad San Jorge, Villanueva de Gállego, Zaragoza, Spain
| | - Shellie S Boudreau
- Center For Neuroplasticity and Pain (CNAP), Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Thomas Graven-Nielsen
- Center For Neuroplasticity and Pain (CNAP), Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
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Holm PM, Petersen KK, Wernbom M, Schrøder HM, Arendt-Nielsen L, Skou ST. Strength training in addition to neuromuscular exercise and education in individuals with knee osteoarthritis-the effects on pain and sensitization. Eur J Pain 2021; 25:1898-1911. [PMID: 33991370 DOI: 10.1002/ejp.1796] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 04/19/2021] [Accepted: 05/09/2021] [Indexed: 01/22/2023]
Abstract
BACKGROUND There is a lack of evidence of the relative effects of different exercise modes on pain sensitization and pain intensity in individuals with knee osteoarthritis (KOA). METHODS Ninety individuals with radiographic and symptomatic KOA, ineligible for knee replacement surgery, were randomized to 12 weeks of twice-weekly strength training in addition to neuromuscular exercise and education (ST+NEMEX-EDU) or neuromuscular exercise and education alone (NEMEX-EDU). Outcomes were bilateral, lower-leg, cuff pressure pain- and tolerance thresholds (PPT, PTT), temporal summation (TS), conditioned pain modulation (CPM), self-reported knee pain intensity and number of painful body sites. RESULTS After 12 weeks of exercise, we found significant differences in increases in PPT (-5.01 kPa (-8.29 to -1.73, p = .0028)) and PTT (-8.02 kPa (-12.22 to -3.82, p = .0002)) in the KOA leg in favour of ST+NEMEX-EDU. We found no difference in effects between groups on TS, CPM or number of painful body sites. In contrast, there were significantly greater pain-relieving effects on VAS mean knee pain during the last week (-8.4 mm (-16.2 to -0.5, p = .0364) and during function (-16.0 mm (-24.8 to -7.3, p = .0004)) in favour of NEMEX-EDU after 12 weeks of exercise. CONCLUSION Additional strength training reduced pain sensitization compared to neuromuscular exercise and education alone, but also attenuated the reduction in pain intensity compared to neuromuscular exercise and education alone. The study provides the first dose- and type-specific insight into the effects of a sustained exercise period on pain sensitization in KOA. Future studies are needed to elucidate the role of different exercise modes. SIGNIFICANCE This study is an important step towards better understanding the effects of exercise in pain management of chronic musculoskeletal conditions. We found that strength training in addition to neuromuscular exercise and education compared with neuromuscular exercise and education only had a differential impact on pain sensitization and pain intensity, but also that regardless of the exercise mode, the positive effects on pain sensitization and pain intensity were comparable to the effects of other therapeutic interventions for individuals with knee osteoarthritis.
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Affiliation(s)
- Paetur M Holm
- The Research Unit PROgrez, Department of Physiotherapy and Occupational Therapy, Naestved-Slagelse-Ringsted Hospitals, Slagelse, Denmark.,Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark
| | - Kristian K Petersen
- Center for Neuroplasty and Pain, SMI, School of Medicine, Aalborg University, Aalborg, Denmark
| | - Mathias Wernbom
- Center for Health and Performance, Department of Food and Nutrition and Sport Science, University of Gothenburg, Gothenburg, Sweden.,Department of Health and Rehabilitation, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Henrik M Schrøder
- Department of Orthopedic Surgery, Naestved-Slagelse-Ringsted Hospitals, Naestved, Denmark.,Department of Regional Health Research, University of Southern Denmark, Odense, Denmark
| | - Lars Arendt-Nielsen
- Center for Neuroplasty and Pain, SMI, School of Medicine, Aalborg University, Aalborg, Denmark
| | - Søren T Skou
- The Research Unit PROgrez, Department of Physiotherapy and Occupational Therapy, Naestved-Slagelse-Ringsted Hospitals, Slagelse, Denmark.,Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark
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The predictive value of quantitative sensory testing: a systematic review on chronic postoperative pain and the analgesic effect of pharmacological therapies in patients with chronic pain. Pain 2021; 162:31-44. [PMID: 32701654 DOI: 10.1097/j.pain.0000000000002019] [Citation(s) in RCA: 85] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Studies have suggested that quantitative sensory testing (QST) might hold a predictive value for the development of chronic postoperative pain and the response to pharmacological interventions. This review systematically summarizes the current evidence on the predictive value of QST for chronic postoperative pain and the effect of pharmacological interventions. The main outcome measures were posttreatment pain intensity, pain relief, presence of moderate-to-severe postoperative pain, responders of 30% and 50% pain relief, or validated questionnaires on pain and disability. A systematic search of MEDLINE and EMBASE yielded 25 studies on surgical interventions and 11 on pharmacological interventions. Seventeen surgical and 11 pharmacological studies reported an association between preoperative or pretreatment QST and chronic postoperative pain or analgesic effect. The most commonly assessed QST modalities were pressure stimuli (17 studies), temporal summation of pain (TSP, 14 studies), and conditioned pain modulation (CPM, 16 studies). Of those, the dynamic QST parameters TSP (50%) and CPM (44%) were most frequently associated with chronic postoperative pain and analgesic effects. A large heterogeneity in methods for assessing TSP (n = 4) and CPM (n = 7) was found. Overall, most studies demonstrated low-to-moderate levels of risk of bias in study design, attrition, prognostic factors, outcome, and statistical analyses. This systematic review demonstrates that TSP and CPM show the most consistent predictive values for chronic postoperative pain and analgesic effect, but the heterogeneous methodologies reduce the generalizability and hence call for methodological guidelines.
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Sirucek L, Jutzeler CR, Rosner J, Schweinhardt P, Curt A, Kramer JLK, Hubli M. The Effect of Conditioned Pain Modulation on Tonic Heat Pain Assessed Using Participant-Controlled Temperature. PAIN MEDICINE 2021; 21:2839-2849. [PMID: 32176283 DOI: 10.1093/pm/pnaa041] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
OBJECTIVE Descending pain modulation can be experimentally assessed by way of testing conditioned pain modulation. The application of tonic heat as a test stimulus in such paradigms offers the possibility of observing dynamic pain responses, such as adaptation and temporal summation of pain. Here we investigated conditioned pain modulation effects on tonic heat employing participant-controlled temperature, an alternative tonic heat pain assessment. Changes in pain perception are thereby represented by temperature adjustments performed by the participant, uncoupling this approach from direct pain ratings. Participant-controlled temperature has emerged as a reliable and sex-independent measure of tonic heat. METHODS Thirty healthy subjects underwent a sequential conditioned pain modulation paradigm, in which a cold water bath was applied as the conditioning stimulus and tonic heat as a test stimulus. Subjects were instructed to change the temperature of the thermode in response to variations in perception to tonic heat in order to maintain their initial rating over a two-minute period. Two additional test stimuli (i.e., lower limb noxious withdrawal reflex and pressure pain threshold) were included as positive controls for conditioned pain modulation effects. RESULTS Participant-controlled temperature revealed conditioned pain modulation effects on temporal summation of pain (P = 0.01). Increased noxious withdrawal reflex thresholds (P = 0.004) and pressure pain thresholds (P < 0.001) in response to conditioning also confirmed inhibitory conditioned pain modulation effects. CONCLUSIONS The measured interaction between conditioned pain modulation and temporal summation of pain supports the participant-controlled temperature approach as a promising method to explore dynamic inhibitory and facilitatory pain processes previously undetected by rating-based approaches.
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Affiliation(s)
- Laura Sirucek
- Spinal Cord Injury Center, Balgrist University Hospital, University of Zurich, Zurich, Switzerland.,Integrative Spinal Research Group, Department of Chiropractic Medicine, Balgrist University Hospital, University of Zurich, Zurich, Switzerland
| | - Catherine Ruth Jutzeler
- Spinal Cord Injury Center, Balgrist University Hospital, University of Zurich, Zurich, Switzerland.,International Collaboration on Repair Discoveries (ICORD), University of British Columbia, Vancouver, British Columbia, Canada.,School of Kinesiology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Jan Rosner
- Spinal Cord Injury Center, Balgrist University Hospital, University of Zurich, Zurich, Switzerland.,School of Kinesiology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Petra Schweinhardt
- Integrative Spinal Research Group, Department of Chiropractic Medicine, Balgrist University Hospital, University of Zurich, Zurich, Switzerland
| | - Armin Curt
- Spinal Cord Injury Center, Balgrist University Hospital, University of Zurich, Zurich, Switzerland
| | - John Lawrence Kipling Kramer
- International Collaboration on Repair Discoveries (ICORD), University of British Columbia, Vancouver, British Columbia, Canada.,School of Kinesiology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Michèle Hubli
- Spinal Cord Injury Center, Balgrist University Hospital, University of Zurich, Zurich, Switzerland
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Shraim MA, Massé-Alarie H, Hodges PW. Methods to discriminate between mechanism-based categories of pain experienced in the musculoskeletal system: a systematic review. Pain 2021; 162:1007-1037. [PMID: 33136983 DOI: 10.1097/j.pain.0000000000002113] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 10/05/2020] [Indexed: 12/18/2022]
Abstract
ABSTRACT Mechanism-based classification of pain has been advocated widely to aid tailoring of interventions for individuals experiencing persistent musculoskeletal pain. Three pain mechanism categories (PMCs) are defined by the International Association for the Study of Pain: nociceptive, neuropathic, and nociplastic pain. Discrimination between them remains challenging. This study aimed to build on a framework developed to converge the diverse literature of PMCs to systematically review methods purported to discriminate between them; synthesise and thematically analyse these methods to identify the convergence and divergence of opinion; and report validation, psychometric properties, and strengths/weaknesses of these methods. The search strategy identified articles discussing methods to discriminate between mechanism-based categories of pain experienced in the musculoskeletal system. Studies that assessed the validity of methods to discriminate between categories were assessed for quality. Extraction and thematic analysis were undertaken on 184 articles. Data synthesis identified 200 methods in 5 themes: clinical examination, quantitative sensory testing, imaging, diagnostic and laboratory testing, and pain-type questionnaires. Few methods have been validated for discrimination between PMCs. There was general convergence but some disagreement regarding findings that discriminate between PMCs. A combination of features and methods, rather than a single method, was generally recommended to discriminate between PMCs. Two major limitations were identified: an overlap of findings of methods between categories due to mixed presentations and many methods considered discrimination between 2 PMCs but not others. The results of this review provide a foundation to refine methods to differentiate mechanisms for musculoskeletal pain.
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Affiliation(s)
- Muath A Shraim
- The University of Queensland, NHMRC Centre of Clinical Research Excellence in Spinal Pain, Injury & Health, School of Health & Rehabilitation Sciences, QLD, Australia
| | - Hugo Massé-Alarie
- The University of Queensland, NHMRC Centre of Clinical Research Excellence in Spinal Pain, Injury & Health, School of Health & Rehabilitation Sciences, QLD, Australia
- Centre Interdisciplinaire de recherche en réadaptation et Integration sociale (CIRRIS), Université Laval, Québec, QC, Canada
| | - Paul W Hodges
- The University of Queensland, NHMRC Centre of Clinical Research Excellence in Spinal Pain, Injury & Health, School of Health & Rehabilitation Sciences, QLD, Australia
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Conditioned pain modulation predicts persistent pain after knee replacement surgery. Pain Rep 2021; 6:e910. [PMID: 33817538 PMCID: PMC8009638 DOI: 10.1097/pr9.0000000000000910] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 01/26/2021] [Accepted: 02/03/2021] [Indexed: 11/26/2022] Open
Abstract
Introduction Persistent pain after total knee replacement is an underestimated outcome leading to significant health burden. Sensory testing has been explored to help surgeons in decision making and better patient selection. Patients with different chronic pain syndromes exhibit a poor descending pain inhibition that can be quantified through experimental paradigms (conditioned pain modulation). A poor preoperative descending pain inhibition response predicted persistence of pain after surgery in previous studies. Methods This study investigated the correlation between a preoperative inefficient endogenous analgesia and a bad postoperative pain outcome (painful prosthesis). One hundred forty-six patients were studied preoperatively by quantitative sensory testing. Conditioned pain modulation was calculated as the relative decrease in pain intensity (thermal stimulus) during heterotopic painful stimulation. Results Approximately 21.2% of patients had a bad pain outcome (painful prosthesis), 6 months after surgery. Preoperatively, 47.9% of patients exhibited an insufficient endogenous analgesia. The probability to develop persistent pain after surgery in that group was higher than that in patients with a sufficient endogenous analgesia (31.4% [20.9-43.6, 95% CI] vs 11.8% [5.5-21.3, 95% CI], respectively; P < 0.004). Correlation between conditioned pain modulation values and postoperative intensity of pain was also established. Besides, a preoperative lower quality of life (mental component) predicted a worse pain outcome, too. Conclusions This cohort study shows that preoperative sensory testing predicts a bad pain outcome after total knee replacement. This tool could help clinicians in a better indication of patients with advanced knee osteoarthritis for replacement surgery. Registration Details ClinicalTrials.gov: NCT01811888 (prospective).
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Medial Prefrontal Transcranial Direct Current Stimulation Aimed to Improve Affective and Attentional Modulation of Pain in Chronic Low Back Pain Patients. J Clin Med 2021; 10:jcm10040889. [PMID: 33671714 PMCID: PMC7926794 DOI: 10.3390/jcm10040889] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 02/09/2021] [Accepted: 02/18/2021] [Indexed: 01/09/2023] Open
Abstract
Chronic low back pain (CLBP) is often without clear underlying pathology. Affective disturbance and dysfunctional pain mechanisms, commonly observed in populations with CLBP, have, therefore, been suggested as potential contributors to CLBP development and maintenance. However, little consensus exists on how these features interact and if they can be targeted using non-invasive brain stimulation. In this pilot trial, 12 participants completed two phases (Active or Sham) of high-definition transcranial direct current stimulation (HD-tDCS) to the medial prefrontal cortex, applied for 20 min on three consecutive days. Clinical pain ratings, questionnaires, and sensitivity to painful cuff pressure were completed at baseline, then 4 trials of conditioned pain modulation (CPM; alone, with distraction using a Flanker task, with positive affect induction, and with negative affect induction using an image slideshow) were performed prior to HD-tDCS on Day 1 and Day 4 (24 h post-HD-tDCS). At baseline, attentional and affective manipulations were effective in inducing the desired state (p < 0.001) but did not significantly change the magnitude of CPM-effect. Active HD-tDCS was unable to significantly alter the magnitude of the shift in valence and arousal due to affective manipulations, nor did it alter the magnitude of CPM under any basal, attentional, or affective manipulation trial significantly on Day 4 compared to sham. The CPM-effect was greater across all manipulations on Day 1 than Day 4 (p < 0.02) but also showed poor reliability across days. Future work is needed to expand upon these findings and better understand how and if HD-tDCS can be used to enhance attentional and affective effects on pain modulation.
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Gurdiel-Álvarez F, González-Zamorano Y, Lerma Lara S, Gómez-Soriano J, Taylor J, Romero JP, Gómez Jiménez M, Fernández-Carnero J. Effectiveness of Unihemispheric Concurrent Dual-Site Stimulation over M1 and Dorsolateral Prefrontal Cortex Stimulation on Pain Processing: A Triple Blind Cross-Over Control Trial. Brain Sci 2021; 11:188. [PMID: 33557028 PMCID: PMC7913659 DOI: 10.3390/brainsci11020188] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 01/27/2021] [Accepted: 02/01/2021] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Transcranial direct current stimulation (tDCS) of the motor cortex (M1) produces short-term inhibition of pain. Unihemispheric concurrent dual-site tDCS (UHCDS-tDCS) over the M1 and dorsolateral prefrontal cortex (DLPFC) has greater effects on cortical excitability than when applied alone, although its effect on pain is unknown. The aim of this study was to test if anodal UHCDS-tDCS over the M1 and DLPFC in healthy participants could potentiate conditioned pain modulation (CPM) and diminish pain temporal summation (TS). METHODS Thirty participants were randomized to receive a sequence of UHCDS-tDCS, M1-tDCS and sham-tDCS. A 20 min 0.1 mA/cm2 anodal or sham-tDCS intervention was applied to each participant during three test sessions, according to a triple-blind cross-over trial design. For the assessment of pain processing before and after tDCS intervention, the following tests were performed: tourniquet conditioned pain modulation (CPM), pressure pain temporal summation (TS), pressure pain thresholds (PPTs), pressure pain tolerance, mechanosensitivity and cold hyperalgesia. Motor function before and after tDCS intervention was assessed with a dynamometer to measure maximal isometric grip strength. RESULTS No statistically significant differences were found between groups for CPM, pressure pain TS, PPT, pressure pain tolerance, neural mechanosensitivity, cold hyperalgesia or grip strength (p > 0.05). CONCLUSIONS Neither UHCDS-tDCS nor M1-tDCS facilitated CPM or inhibited TS in healthy subjects following one intervention session.
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Affiliation(s)
- Francisco Gurdiel-Álvarez
- Escuela Internacional de Doctorado, Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Universidad Rey Juan Carlos, 28933 Alcorcón, Spain; (F.G.-Á.); (Y.G.-Z.)
| | - Yeray González-Zamorano
- Escuela Internacional de Doctorado, Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Universidad Rey Juan Carlos, 28933 Alcorcón, Spain; (F.G.-Á.); (Y.G.-Z.)
| | - Sergio Lerma Lara
- Department of Physical Therapy, Centro Superior de Estudios Universitarios La Salle, Universidad Autónoma de Madrid, 28023 Madrid, Spain; (S.L.L.); (M.G.J.)
- Motion in Brains Research Group, Institute of Neuroscience and Sciences of the Movement (INCIMOV), Centro Superior de Estudios Universitarios La Salle, Universidad Autónoma de Madrid, 28023 Madrid, Spain
| | - Julio Gómez-Soriano
- Toledo Physiotherapy Research Group (GIFTO), Faculty of Physiotherapy and Nursing, Universidad Castilla La Mancha, 45071 Toledo, Spain;
| | - Julian Taylor
- Sensorimotor Function Group, Hospital Nacional de Parapléjicos, SESCAM, 45071 Toledo, Spain;
- Harris Manchester College, University of Oxford, Oxford OX1 3TD, UK
| | - Juan Pablo Romero
- Facultad de Ciencias Experimentales, Universidad Francisco de Vitoria, 28223 Pozuelo de Alarcón, Spain;
- Brain Damage Unit, Beata María Ana Hospital, 28007 Madrid, Spain
| | - María Gómez Jiménez
- Department of Physical Therapy, Centro Superior de Estudios Universitarios La Salle, Universidad Autónoma de Madrid, 28023 Madrid, Spain; (S.L.L.); (M.G.J.)
| | - Josué Fernández-Carnero
- Motion in Brains Research Group, Institute of Neuroscience and Sciences of the Movement (INCIMOV), Centro Superior de Estudios Universitarios La Salle, Universidad Autónoma de Madrid, 28023 Madrid, Spain
- Department of Physical and Occupational Therapy, Rehabilitation and Physical Medicine, Universidad Rey Juan Carlos, 28922 Madrid, Spain
- La Paz Hospital Institute for Health Research, IdiPAZ, 28046 Madrid, Spain
- Grupo Multidisciplinar de Investigación y Tratamiento del Dolor, Grupo de Excelencia Investigadora, Universidad Rey Juan Carlos-Banco de Santander, 28922 Madrid, Spain
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Coulombe-Lévêque A, Tousignant-Laflamme Y, Léonard G, Marchand S. The effect of conditioning stimulus intensity on conditioned pain modulation (CPM) hypoalgesia. CANADIAN JOURNAL OF PAIN-REVUE CANADIENNE DE LA DOULEUR 2021; 5:22-29. [PMID: 33987521 PMCID: PMC7951153 DOI: 10.1080/24740527.2020.1855972] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Background: The magnitude and duration of conditioned pain modulation (CPM) likely depends on the nature and intensity of the conditioning stimulus (CS). Aims: The aim of this study was to measure the effect of CS intensity on the duration of CPM hypoalgesia. Methods: In this single-blind, nonrandomized, repeated measures study, we assessed CPM hypoalgesia in 20 healthy participants following cold pressor tests (CPT) at 7°C and 12°C. The test stimulus, a 60-s heat stimulation, was administered before the CPT and immediately after, and again at 5-min intervals until participants’ pain scores returned to pre-CS levels. Two hypoalgesia thresholds were used to establish return to pre-CS level: within −10/100 of baseline and within −20/100 of baseline. Results: CPM hypoalgesia, when defined as a reduction in pain levels >10/100, did not last longer following the more intense 7°C CPT compared to the 12°C CPT (32 min vs. 20 min, respectively; P = 0.06); similar results were obtained when CPM hypoalgesia was defined as a reduction in pain levels of >20/100 (16 min following the 7°C CPT vs. 9 min following the 12°C CPT; P = 0.33). The duration of CPM hypoalgesia was significantly longer when the 10/100 threshold was used compared to the 20/100 threshold, regardless of CPT temperature (P = 0.008 for the 12°C CPT; P < 0.001 for the 7°C CPT). Conclusions: The more intense CS did not induce CPM hypoalgesia of longer duration compared to the less intense CS. The choice of threshold for what constitutes CPM hypoalgesia did have a significant effect on the results.
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Affiliation(s)
- Alexia Coulombe-Lévêque
- Centre de recherche sur le vieillissement, Sherbrooke, Quebec, Canada.,School of Rehabilitation, Faculty de medicine and health sciences, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Yannick Tousignant-Laflamme
- School of Rehabilitation, Faculty de medicine and health sciences, Université de Sherbrooke, Sherbrooke, Quebec, Canada.,Centre de recherche du CHUS, Sherbrooke, Quebec, Canada
| | - Guillaume Léonard
- Centre de recherche sur le vieillissement, Sherbrooke, Quebec, Canada.,School of Rehabilitation, Faculty de medicine and health sciences, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Serge Marchand
- Department of Neurosurgery, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Quebec, Canada
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Hoegh M, Poulsen JN, Petrini L, Graven-Nielsen T. The Effect of Stress on Repeated Painful Stimuli with and Without Painful Conditioning. PAIN MEDICINE 2021; 21:317-325. [PMID: 31241135 DOI: 10.1093/pm/pnz115] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
OBJECTIVES Stress and pain have been interrelated in clinical widespread pain conditions. Studies indicate that acute experimental stress in healthy volunteers has a negative effect on the descending inhibitory pain control system and thus the ability to inhibit one painful stimulus with another (conditioned pain modulation [CPM]) although without effect on general pain sensitivity. CPM effects can be assessed immediately after the stress induction, whereas some physiological stress responses (e.g., cortisol release) are delayed and longer lasting. It is unclear whether CPM may relate to stress-induced increases in cortisol. DESIGN Twenty-five healthy men had CPM effects measured over a period of 10 minutes. Pain detection thresholds (PDTs) were assessed by repeated test stimuli with cuff algometry on one leg, with and without painful cuff pressure conditioning on the contralateral leg. CPM effects, assessed as the increase in PDT during conditioning stimulation compared with without, were measured before and after experimental stress and a control condition (Montreal Imaging Stress Task [MIST]). Saliva cortisol levels and self-perceived stress were collected. RESULTS Participants reported the MIST to be more stressful compared with the MIST control, but cortisol levels did not change significantly from baseline. In all sessions, PDT increased during conditioning (P = 0.001), although the MIST compared with the MIST control had no significant effect on PDT or CPM effects. A negative correlation between changes in cortisol and conditioned PDT was found when applying the MIST (P < 0.03). CONCLUSIONS No significant effect of stress was found on CPM compared with a matched control condition. Individual changes in experimental stress and in conditioned pain sensitivity may be linked with cortisol.
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Affiliation(s)
- Morten Hoegh
- Center for Neuroplasticity and Pain (CNAP), SMI, Aalborg University, Aalborg, Denmark
| | - Jeppe N Poulsen
- Center for Neuroplasticity and Pain (CNAP), SMI, Aalborg University, Aalborg, Denmark
| | - Laura Petrini
- Center for Neuroplasticity and Pain (CNAP), SMI, Aalborg University, Aalborg, Denmark
| | - Thomas Graven-Nielsen
- Center for Neuroplasticity and Pain (CNAP), SMI, Aalborg University, Aalborg, Denmark
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New Approaches Based on Non-Invasive Brain Stimulation and Mental Representation Techniques Targeting Pain in Parkinson's Disease Patients: Two Study Protocols for Two Randomized Controlled Trials. Brain Sci 2021; 11:brainsci11010065. [PMID: 33561080 PMCID: PMC7825448 DOI: 10.3390/brainsci11010065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 12/26/2020] [Accepted: 01/01/2021] [Indexed: 12/14/2022] Open
Abstract
Pain is an under-reported but prevalent symptom in Parkinson’s Disease (PD), impacting patients’ quality of life. Both pain and PD conditions cause cortical excitability reduction and non-invasive brain stimulation. Mental representation techniques are thought to be able to counteract it, also resulting effectively in chronic pain conditions. We aim to conduct two independent studies in order to evaluate the efficacy of transcranial direct current stimulation (tDCS) and mental representation protocol in the management of pain in PD patients during the ON state: (1) tDCS over the Primary Motor Cortex (M1); and (2) Action Observation (AO) and Motor Imagery (MI) training through a Brain-Computer Interface (BCI) using Virtual Reality (AO + MI-BCI). Both studies will include 32 subjects in a longitudinal prospective parallel randomized controlled trial design under different blinding conditions. The main outcomes will be score changes in King’s Parkinson’s Disease Pain Scale, Brief Pain Inventory, Temporal Summation, Conditioned Pain Modulation, and Pain Pressure Threshold. Assessment will be performed pre-intervention, post-intervention, and 15 days post-intervention, in both ON and OFF states.
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Vaegter HB, Petersen KK, Sjodsholm LV, Schou P, Andersen MB, Graven-Nielsen T. Impaired exercise-induced hypoalgesia in individuals reporting an increase in low back pain during acute exercise. Eur J Pain 2021; 25:1053-1063. [PMID: 33400333 DOI: 10.1002/ejp.1726] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 12/15/2020] [Accepted: 12/28/2020] [Indexed: 01/26/2023]
Abstract
OBJECTIVES Exercise therapy is recommended for low back pain (LBP) although the immediate effects on pain are highly variable. In 96 individuals with LBP this cross-sectional study explored (a) the magnitude of exercise-induced hypoalgesia (EIH) and (b) measures of pain sensitivity and clinical pain manifestations in individuals reporting a clinical relevant increase in back pain during physical activity compared with individuals reporting low or no increase in back pain during physical activity. METHODS Cuff algometry was performed at baseline on the leg to assess pressure pain threshold (cPPT), tolerance (cPTT) and temporal summation of pain (cTSP). Manual PPTs were assessed on the back and leg before and after a 6-min walk test (6MWT). Back pain was scored on a numerical rating scale (NRS) after each minute of walking. The EIH-effect was estimated as the increase in PPTs after the walk exercise. RESULTS Twenty-seven individuals reported an increase of ≥2/10 in pain NRS scores during walking and compared with the individuals with <2/10 NRS scores: cPPT and EIH-effects were lower whereas cTSP, pain intensity and disability were increased (p < 0.03). Baseline NRS scores, EIH and pain thresholds were associated with the likelihood of an increase of ≥2/10 in back pain intensity during walking (p < 0.05). CONCLUSIONS Pain flares in response to physical activity in individuals with LBP seem to be linked with baseline pain sensitivity and pain intensity, and impair the beneficial EIH. Such information may better inform when individuals with LBP will have a beneficial effect of physical activity. SIGNIFICANCE Pain flares in response to physical activity in individuals with LBP seem to be linked with baseline pain sensitivity and pain intensity, and impair the beneficial exercise-induced hypoalgesia. Such information may better inform when individuals with LBP will have a beneficial effect of physical activity.
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Affiliation(s)
- Henrik B Vaegter
- Pain Research Group, Department of Anesthesiology and Intensive Care Medicine, Pain Center, University Hospital Odense, Odense, Denmark.,Department of Clinical Research, Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark
| | - Kristian K Petersen
- SMI, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark.,Center for Neuroplasticity and Pain, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark
| | - Line V Sjodsholm
- Rehabilitation Center Hollufgaard, Odense Municipality, Odense, Denmark
| | - Pia Schou
- Rehabilitation Center Hollufgaard, Odense Municipality, Odense, Denmark
| | | | - Thomas Graven-Nielsen
- Center for Neuroplasticity and Pain, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark
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Haik MN, Alburquerque-Sendín F, Fernandes RAS, Kamonseki DH, Almeida LA, Liebano RE, Camargo PR. Biopsychosocial Aspects in Individuals with Acute and Chronic Rotator Cuff Related Shoulder Pain: Classification Based on a Decision Tree Analysis. Diagnostics (Basel) 2020; 10:diagnostics10110928. [PMID: 33182699 PMCID: PMC7696199 DOI: 10.3390/diagnostics10110928] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/02/2020] [Accepted: 11/04/2020] [Indexed: 01/10/2023] Open
Abstract
Biopsychosocial aspects seem to influence the clinical condition of rotator cuff related shoulder pain (RCRSP). However, traditional bivariate and linear analyses may not be sufficiently robust to capture the complex relationships among these aspects. This study determined which biopsychosocial aspects would better classify individuals with acute and chronic RCRSP and described how these aspects interact to create biopsychosocial phenotypes in individuals with acute and chronic RCRSP. Individuals with acute (<six months of pain, n = 15) and chronic (≥six months of pain, n = 38) RCRSP were included. Sociodemographic data, biological data related to general clinical health status, to shoulder clinical condition and to sensory function, and psychosocial data were collected. Outcomes were compared between groups and a decision tree was used to classify the individuals with acute and chronic RCRSP into different phenotypes hierarchically organized in nodes. Only conditioned pain modulation was different between the groups. However, the tree combined six biopsychosocial aspects to identify seven distinct phenotypes in individuals with RCRSP: three phenotypes of individuals with acute, and four with chronic RCRSP. While the majority of the individuals with chronic RCRSP have no other previous painful complaint besides the shoulder pain and low efficiency of endogenous pain modulation with no signs of biomechanical related pain, individuals with acute RCRSP are more likely to have preserved endogenous pain modulation and unilateral pain with signs of kinesiophobia.
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Affiliation(s)
- Melina N Haik
- Department of Physical Therapy, Center of Health and Sport Science (CEFID), Universidade do Estado de Santa Catarina, Rua Pascoal Simone 358, Florianópolis, SC 88080-350, Brazil
- Laboratory of Analysis and Intervention of the Shoulder Complex, Department of Physical Therapy, Universidade Federal de São Carlos, Rodovia Washington Luis km 235, São Carlos, SP 13565-905, Brazil; (D.H.K.); (L.A.A.); (P.R.C.)
- Correspondence:
| | - Francisco Alburquerque-Sendín
- Department of Nursing, Pharmacology and Physical Therapy, Universidad de Córdoba, Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), 14004 Córdoba, Spain;
| | - Ricardo A S Fernandes
- Department of Electrical Engineering, Center for Exact Sciences and Technology (CCET), Universidade Federal de São Carlos, Rodovia Washington Luis km 235, São Carlos, SP 13565-905, Brazil;
| | - Danilo H Kamonseki
- Laboratory of Analysis and Intervention of the Shoulder Complex, Department of Physical Therapy, Universidade Federal de São Carlos, Rodovia Washington Luis km 235, São Carlos, SP 13565-905, Brazil; (D.H.K.); (L.A.A.); (P.R.C.)
| | - Lucas A Almeida
- Laboratory of Analysis and Intervention of the Shoulder Complex, Department of Physical Therapy, Universidade Federal de São Carlos, Rodovia Washington Luis km 235, São Carlos, SP 13565-905, Brazil; (D.H.K.); (L.A.A.); (P.R.C.)
| | - Richard E Liebano
- Physiotherapeutic Resources Laboratory, Department of Physical Therapy, Universidade Federal de São Carlos, Rodovia Washington Luis km 235, São Carlos, SP 13565-905, Brazil;
| | - Paula R Camargo
- Laboratory of Analysis and Intervention of the Shoulder Complex, Department of Physical Therapy, Universidade Federal de São Carlos, Rodovia Washington Luis km 235, São Carlos, SP 13565-905, Brazil; (D.H.K.); (L.A.A.); (P.R.C.)
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Cummins TM, McMahon SB, Bannister K. The impact of paradigm and stringent analysis parameters on measuring a net conditioned pain modulation effect: A test, retest, control study. Eur J Pain 2020; 25:415-429. [PMID: 33065759 DOI: 10.1002/ejp.1681] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 10/08/2020] [Accepted: 10/12/2020] [Indexed: 12/20/2022]
Abstract
BACKGROUND Reporting in conditioned pain modulation (CPM) studies is not standardised. Here, two CPM protocols were performed in populations of healthy human subjects in order to investigate the influence of the CPM paradigm and stringent analyses parameters on the identification of a net CPM effect. METHODS A standard thermal or mechanical CPM protocol was carried out on 25 and 17 subjects, respectively. The standard error of measurement (SEM) of the CPM effect was calculated in order to determine a change in pain thresholds greater than that due to measurement error or 'real' change in test scores. In addition, each individual underwent a minimum of two control CPM sessions, which were paired with the CPM test sessions. To quantify a net CPM effect, the intrasession difference between baseline and conditioning was subtracted from the difference calculated at the same time points during the control session. RESULTS For both protocols, excellent reliability for intrasession repeats of the test stimulus at baseline was demonstrated for thermal and mechanical stimulation (ICC > 0.9). Test-retest subject responses (in terms of experimental Session 1 versus. Session 2) showed excellent reliability for mechanical (ICC > 0.8), compared to thermal stimulation, which ranged from poor to moderate (ICC < 0.4->0.75). However, calculating the net CPM effect using control session data demonstrated poor-fair reliability for both protocols (ICC < 0.4-0.59). CONCLUSION Calculating the net CPM effect should be optimised and standardised for comparison of CPM data collected from global research groups. Recommendation is made for the performance of a multicentre, test-retest study.
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Affiliation(s)
- Tatum M Cummins
- Central Modulation of Pain, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK.,Neurorestoration, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Stephen B McMahon
- Neurorestoration, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Kirsty Bannister
- Central Modulation of Pain, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
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Mertens MGCAM, Hermans L, Crombez G, Goudman L, Calders P, Van Oosterwijck J, Meeus M. Comparison of five conditioned pain modulation paradigms and influencing personal factors in healthy adults. Eur J Pain 2020; 25:243-256. [DOI: 10.1002/ejp.1665] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 08/14/2020] [Accepted: 09/16/2020] [Indexed: 01/24/2023]
Affiliation(s)
- Michel GCAM Mertens
- Research Group MOVANT Department of Rehabilitation Sciences and Physiotherapy (REVAKI) University of Antwerp Wilrijk Belgium
- Pain in Motion research group http://www.paininmotion.be/ Belgium
| | - Linda Hermans
- Pain in Motion research group http://www.paininmotion.be/ Belgium
- Department of Rehabilitation Sciences and Physiotherapy Faculty of Medicine and Health Sciences Ghent University Ghent Belgium
| | - Geert Crombez
- Department of Experimental Clinical and Health Psychology Ghent University Ghent Belgium
| | - Lisa Goudman
- Departments of Physiotherapy and Human Physiology Faculty of Physical Education & Physiotherapy Vrije Universiteit Brussel Ixelles Belgium
- Department of Neurosurgery University Hospital Brussels Jette Belgium
| | - Patrick Calders
- Department of Rehabilitation Sciences and Physiotherapy Faculty of Medicine and Health Sciences Ghent University Ghent Belgium
| | - Jessica Van Oosterwijck
- Research Group MOVANT Department of Rehabilitation Sciences and Physiotherapy (REVAKI) University of Antwerp Wilrijk Belgium
- Pain in Motion research group http://www.paininmotion.be/ Belgium
- Department of Rehabilitation Sciences and Physiotherapy Faculty of Medicine and Health Sciences Ghent University Ghent Belgium
- Research Foundation – Flanders (FWO) Brussels Belgium
| | - Mira Meeus
- Research Group MOVANT Department of Rehabilitation Sciences and Physiotherapy (REVAKI) University of Antwerp Wilrijk Belgium
- Pain in Motion research group http://www.paininmotion.be/ Belgium
- Department of Rehabilitation Sciences and Physiotherapy Faculty of Medicine and Health Sciences Ghent University Ghent Belgium
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Arribas-Romano A, Fernández-Carnero J, Molina-Rueda F, Angulo-Diaz-Parreño S, Navarro-Santana MJ. Efficacy of Physical Therapy on Nociceptive Pain Processing Alterations in Patients with Chronic Musculoskeletal Pain: A Systematic Review and Meta-analysis. PAIN MEDICINE (MALDEN, MASS.) 2020; 21:2502-2517. [PMID: 32100027 DOI: 10.1093/pm/pnz366] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/20/2023]
Abstract
INTRODUCTION Chronic musculoskeletal pain is a major health, social, and economic problem. Most of the subjects who suffer from chronic musculoskeletal pain present processes of central sensitization. Temporal summation and conditioned pain modulation are the two most commonly used clinical measures of this. The objective of this review is to evaluate the effects of physical therapy on temporal summation (TS) and conditioned pain modulation (CPM) in patients with chronic musculoskeletal pain. METHODS This is a systematic review and meta-analysis. We searched the MEDLINE, EMBASE, CINAHL, EBSCO, PubMed, PEDro, Cochrane Collaboration Trials Register, Cochrane Database of Systematic Reviews, and SCOPUS databases. Different mesh terms and key words were combined for the search strategy, with the aim of encompassing all studies that have used any type of physical therapy treatment in patients with chronic musculoskeletal pain and have measured both TS and CPM. RESULTS Eighteen studies remained for qualitative analysis and 16 for quantitative analysis. Statistically significant differences with a 95% confidence interval (CI) were obtained for TS (-0.21, 95% CI = -0.39 to -0.03, Z = 2.50, P = 0.02, N = 721) and CPM (0.34, 95% CI = 0.12 to 0.56, Z = 2.99, P = 0.003, N = 680) in favor of physical therapy as compared with control. Manual therapy produces a slight improvement in TS, and physical therapy modalities in general improve CPM. No significant differences between the subgroups of the meta-analysis were found. The methodological quality of the studies was high. CONCLUSIONS Physical therapy produces a slight improvement in central sensitization (CS)-related variables, with TS decreased and CPM increased when compared with a control group in patients with CMP. Only significant differences in TS were identified in the manual therapy subgroup.
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Affiliation(s)
- Alberto Arribas-Romano
- Escuela Internacional de Doctorado, Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Universidad Rey Juan Carlos, Alcorcón, Spain
- Physiotherapy and Pain Research Center. General Foundation of the University of Alcalá, Madrid, Spain
| | - Josué Fernández-Carnero
- Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Rey Juan Carlos University, Madrid, Spain
- La Paz Hospital Institute for Health Research, IdiPAZ, Madrid, Spain
- Grupo Multidisciplinar de Investigación & Tratamiento del Dolor, Grupo de Excelencia Investigadora URJC-Banco de Santander, Madrid, Spain
- Motion in Brains Research Group, Institute of Neuroscience and Movement Sciences (INCIMOV), Centro Superior de Estudios Universitarios La Salle, Universidad Autonoma de Madrid, Madrid, Spain
| | - Francisco Molina-Rueda
- Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Rey Juan Carlos University, Madrid, Spain
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Painful Cutaneous Electrical Stimulation vs. Heat Pain as Test Stimuli in Conditioned Pain Modulation. Brain Sci 2020; 10:brainsci10100684. [PMID: 32998204 PMCID: PMC7599732 DOI: 10.3390/brainsci10100684] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 09/24/2020] [Accepted: 09/26/2020] [Indexed: 11/30/2022] Open
Abstract
Different paradigms can assess the effect of conditioned pain modulation (CPM). The aim of the present study was to compare heat pain, as an often used test stimulus (TS), to painful cutaneous electrical stimulation (PCES), having the advantage of the additional recording of PCES-related evoked potentials. In 28 healthy subjects we applied heat and PCES at the dominant hand as test stimulus (TS) to compare the CPM-effect elicited by hand immersion into cold water (10 °C) as conditioning stimulus (CS). Subjects rated the pain intensity of TS at baseline, during and 5 min after CS application and additionally of CS, on a numerical rating scale (NRS) (0–100). The ‘early’ (during CS–before CS) and ‘late’ (after CS–before CS) CPM-effects were analyzed. Parallel to the PCES, the related evoked potentials were recorded via Cz to evaluate any changes in PCES-amplitudes. CS reduced significantly the pain intensity of both PCES and heat pain as TS. On a group level, the CPM-effect did not differ significantly between both paradigms. Both early and late CPM-effect based on PCES correlated significantly with the CS pain intensity (r = −0.630 and −0.503, respectively), whereas using heat pain the correlation was not significant. We found a significant reduction of PCES-amplitudes during CS, but this did not correlate with the PCES-induced pain intensity. Correlation with the CS painfulness (r = −0.464) did not achieve the significance level after Bonferroni correction. The extent of the CPM effects was similar in both testing paradigms at group level, despite intraindividual differences. Future studies should further elicit the exact mechanisms explaining the modality of these specific differences.
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Conditioned Pain Modulation Efficiency Is Associated With Pain Catastrophizing in Patients With Chronic Low Back Pain. Clin J Pain 2020; 36:825-832. [DOI: 10.1097/ajp.0000000000000878] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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