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Berardi G, Dailey DL, Chimenti R, Merriwether E, Vance CGT, Rakel BA, Crofford LJ, Sluka KA. Influence of Transcutaneous Electrical Nerve Stimulation (TENS) on Pressure Pain Thresholds and Conditioned Pain Modulation in a Randomized Controlled Trial in Women With Fibromyalgia. THE JOURNAL OF PAIN 2024; 25:104452. [PMID: 38154621 PMCID: PMC11128356 DOI: 10.1016/j.jpain.2023.12.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 12/18/2023] [Accepted: 12/19/2023] [Indexed: 12/30/2023]
Abstract
Transcutaneous electrical nerve stimulation (TENS) effectively reduces pain in fibromyalgia (FM). The purpose of this study was to examine the influence of TENS use on pressure pain thresholds (PPT) and conditioned pain modulation (CPM) in individuals with FM using data from the Fibromyalgia Activity Study with TENS trial (NCT01888640). Individuals with FM were randomly assigned to receive active TENS, placebo TENS, or no TENS for 4 weeks. A total of 238 females satisfied the per-protocol analysis among the active TENS (n = 76), placebo TENS (n = 68), and no TENS (n = 94) groups. Following 4 weeks of group allocation, the active TENS group continued for an additional 4 weeks of active TENS totaling 8 weeks (n = 66), the placebo and no TENS groups transitioned to receive 4 weeks of active TENS (delayed TENS, n = 161). Assessment of resting pain, movement-evoked pain (MEP), PPT, and CPM occurred prior to and following active, placebo, or no TENS. There were no significant changes in PPT or CPM among the active TENS, placebo TENS, or no TENS groups after 4 weeks. Individuals who reported clinically relevant improvements in MEP (≥30% decrease) demonstrated increases in PPT (P < .001), but not CPM, when compared to MEP non-responders. There were no significant correlations among the change in PPT or CPM compared to MEP and resting pain following active TENS use (active TENS + delayed TENS). PPT and CPM may provide insight to underlying mechanisms contributing to pain; however, these measures may not relate to self-reported pain symptoms. PERSPECTIVE: Pressure pain threshold increased in individuals with clinically relevant improvement (≥30%) in MEP, indicating the clinical relevance of PPT for understanding mechanisms contributing to pain. CPM was not a reliable indicator of treatment response in MEP responders.
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Affiliation(s)
| | - Dana L Dailey
- University of Iowa, Iowa City, IA
- St Ambrose University, Davenport, IA
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Haenen V, Dams L, Meeus M, Devoogdt N, Morlion B, De Groote A, De Groef A. Continuum of somatosensory profiles in breast cancer survivors with and without pain, compared to healthy controls and patients with fibromyalgia. Eur J Pain 2024. [PMID: 38440910 DOI: 10.1002/ejp.2257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 02/16/2024] [Accepted: 02/24/2024] [Indexed: 03/06/2024]
Abstract
CONTEXT The prevalence of persistent pain among breast cancer survivors (BCS) is high, and it is unclear what distinguishes those with persistent pain from those without. Research suggests that differences in somatosensory function evaluated by quantitative sensory testing (QST) may be responsible. OBJECTIVES This study aimed to describe somatosensory profiles in terms of hyper- and hypoesthesia in BCS with and without persistent pain using reference data from healthy controls. Second, QST parameters of BCS with and without pain were compared with those of healthy controls (i.e., a negative control group) and patients with fibromyalgia (i.e., a positive control group). METHODS Participants (n = 128) were divided into four equal groups: healthy controls, BCS with persistent pain, BCS without persistent pain, and patients with fibromyalgia. Nine QST parameters were evaluated at the trunk and at a remote location. Somatosensory profiles were determined by Z-score transformation of QST data using normative data from healthy controls. RESULTS At the trunk, compared to healthy controls, BCS with persistent pain exhibited sensory aberrations across five out of seven QST parameters: pressure pain threshold, mechanical detection, and thermal thresholds. Pain-free BCS showed similar sensory aberrations across the four QST parameters compared to healthy controls: mechanical detection and thermal thresholds. Temporal summation and conditioned pain modulation were not significantly different between groups. CONCLUSION BCS with persistent pain exert aberrations in peripheral processing of nociceptive signals, heightened facilitation of nociceptive signals, and higher psychosocial burden when compared to pain-free BCS, healthy controls, and patients with fibromyalgia. SIGNIFICANCE This study investigates the somatosensory function of breast cancer survivors with and without persistent pain using quantitative sensory testing and two control group (i.e., patients with fibromyalgia and healthy controls). Our results indicate somatosensory aberrations within the peripheral, but not central pathways in breast cancer survivors with persistent pain. Our findings contribute to a better understanding of the somatosensory mechanisms underlying persistent pain, which may inform future interventions to prevent the development of persistent pain, and improve treatment modalities.
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Affiliation(s)
- Vincent Haenen
- Research Group MOVANT, Department of Rehabilitation Sciences and Physiotherapy (REVAKI), University of Antwerp, Wilrijk, Belgium
- Research Group Rehabilitation in Internal Disorders (GRID), Department of Rehabilitation Sciences, KU Leuven, University of Leuven, Leuven, Belgium
- Pain in Motion International Research Group, Wilrijk, Belgium
| | - Lore Dams
- Research Group MOVANT, Department of Rehabilitation Sciences and Physiotherapy (REVAKI), University of Antwerp, Wilrijk, Belgium
- Pain in Motion International Research Group, Wilrijk, Belgium
- Department of Physical and Rehabilitation Medicine, University Hospitals Leuven, Leuven, Belgium
| | - Mira Meeus
- Research Group MOVANT, Department of Rehabilitation Sciences and Physiotherapy (REVAKI), University of Antwerp, Wilrijk, Belgium
- Pain in Motion International Research Group, Wilrijk, Belgium
| | - Nele Devoogdt
- Research Group Rehabilitation in Internal Disorders (GRID), Department of Rehabilitation Sciences, KU Leuven, University of Leuven, Leuven, Belgium
- Center for Lymphoedema, Department of Physical Medicine and Rehabilitation, University Hospitals Leuven, Leuven, Belgium
- Lymphovenous Center, Department of Vascular Surgery, University Hospitals Leuven, Leuven, Belgium
| | - Bart Morlion
- Department of Cardiovascular Sciences, Section Anesthesiology & Algology, KU Leuven, University of Leuven, Leuven, Belgium
- The Leuven Center for Algology and Pain Management, University Hospitals Leuven, Leuven, Belgium
| | - Amber De Groote
- Research Group MOVANT, Department of Rehabilitation Sciences and Physiotherapy (REVAKI), University of Antwerp, Wilrijk, Belgium
- Pain in Motion International Research Group, Wilrijk, Belgium
| | - An De Groef
- Research Group MOVANT, Department of Rehabilitation Sciences and Physiotherapy (REVAKI), University of Antwerp, Wilrijk, Belgium
- Research Group Rehabilitation in Internal Disorders (GRID), Department of Rehabilitation Sciences, KU Leuven, University of Leuven, Leuven, Belgium
- Pain in Motion International Research Group, Wilrijk, Belgium
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Granovsky Y, Sprecher E, Yarovinsky N, Shor M, Crystal S. Body-site effect on CPM efficiency in healthy subjects: Central vs. peripheral stimulation. Heliyon 2024; 10:e25156. [PMID: 38317925 PMCID: PMC10839622 DOI: 10.1016/j.heliyon.2024.e25156] [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: 08/15/2023] [Revised: 01/04/2024] [Accepted: 01/22/2024] [Indexed: 02/07/2024] Open
Abstract
Structural changes in the peripheral nerve system in neuropathic states alter sensory capacity of the affected area, thus biasing results of conditioned pain modulation (CPM) responses. The aim of this study was to evaluate CPM efficiency of central (i.e. trunk) vs. peripheral (i.e. limb) application of 'test' and 'conditioning' stimuli. Methods: Healthy volunteers (ages 18-73 yrs) underwent two CPM protocols: 'CPM Limb' and 'CPM Trunk'. Each included two types of test stimuli (Ts) (pressure pain threshold: PPT; and contact heat) conditioned either to hand immersion in cold noxious water (CPM limb), or to noxious contact heat applied on lower back (CPM trunk). Results: Both protocols generated efficient pain inhibition for each of the applied Ts; the PPT-based protocol induced more efficient CPM when the conditioned stimulus was applied on the trunk (p = 0.016). Moreover, the PPT-based CPM responses were significantly correlated (ρ = 0.349; p = 0.007). Conclusions: An efficient CPM induced by both central and peripheral stimulation, along with significant correlation between PPT-based responses, advances using the central 'CPM Trunk' protocol in patients with peripheral neuropathy.
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Affiliation(s)
- Y. Granovsky
- Laboratory of Clinical Neurophysiology, Bruce Rappaport Faculty of Medicine, Technion, Israel Institute of Technology, Haifa, Israel
- Department of Neurology, Rambam Health Care Campus, Haifa, Israel
| | - E. Sprecher
- Department of Neurology, Rambam Health Care Campus, Haifa, Israel
| | - N. Yarovinsky
- Department of Neurology, Rambam Health Care Campus, Haifa, Israel
| | - M. Shor
- Department of Neurology, Rambam Health Care Campus, Haifa, Israel
| | - S. Crystal
- Laboratory of Clinical Neurophysiology, Bruce Rappaport Faculty of Medicine, Technion, Israel Institute of Technology, Haifa, Israel
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Larsen JB, Madeleine P, Sørensen LB, Sachau J, Otto JC, Baron R, Arendt-Nielsen L. Subgrouping of facilitatory or inhibitory conditioned pain modulation responses in patients with chronic knee pain. Explorative analysis from a multicentre trial. Eur J Pain 2024; 28:335-351. [PMID: 37746845 DOI: 10.1002/ejp.2185] [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: 10/20/2022] [Revised: 07/07/2023] [Accepted: 09/08/2023] [Indexed: 09/26/2023]
Abstract
BACKGROUND Facilitatory and inhibitory conditioned pain modulation (CPM) responses are observed in healthy volunteers and chronic pain patients, but the clinical implications for phenotyping are unknown. This study aimed to subgroup and compare chronic knee pain patients according to their CPM responses. METHODS This explorative, cross-sectional study included 127 patients with chronic knee pain (osteoarthritis or following total knee arthroplasty). Individual CPM responses were categorized as facilitatory (test stimuli pain intensity increased when conditioning stimuli were applied), as inhibitory (test stimuli pain intensity decreased) or as no change (defined as less than 5.3% change in pain intensity). Outcomes were clinical pain intensities, temporal summation, widespread pain, self-reported physical function, PainDETECT questionnaire and Pain Quality Assessment Scale. Data were analysed as comparisons between the inhibitory and the facilitatory groups and using multivariate linear regression models. RESULTS Fifty-four patients had facilitatory CPM responses, 49 had inhibitory CPM responses, and 24 showed no change in CPM response. A between-group difference was observed for self-reported physical function, with the facilitatory CPM group reporting better function (54.4 vs. 46.0, p = 0.028) and the facilitatory CPM group reported more deep pain sensations (3.2 vs. 2.0, p = 0.021). The remaining outcomes showed no between-group differences. Higher clinical pain intensity and facilitated temporal summation were associated in the facilitated CPM group but not in the inhibitory CPM group. CONCLUSION These explorative findings indicated that quantitative clinical and experimental differences exist between facilitatory or inhibitory CPM responses in a chronic knee pain patient population. Differences in patients' CPM responses should be further investigated to unravel possible clinical importance. SIGNIFICANCE Our findings confirm that conditioned pain modulation consist of inhibitory and facilitatory responders among a patient population with chronic knee pain. This explorative study indicates that patients with either facilitatory or inhibitory conditioned pain modulation could exhibit differences in pain outcomes. Subgrouping of chronic pain patients depending on individual conditioned pain modulation responses could be considered in phenotyping patients prior to inclusion in clinical trials or used for personalizing the management regime.
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Affiliation(s)
- J B Larsen
- Musculoskeltal Health and Implementation, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - P Madeleine
- Sport Sciences - Performance and Technology, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - L B Sørensen
- Musculoskeltal Health and Implementation, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - J Sachau
- Division of Neurological Pain Research and Therapy, Department of Neurology, University Hospital Schleswig-Holstein, Kiel, Germany
| | - J C Otto
- Ameos Clinic Eutin, Eutin, Germany
| | - R Baron
- Division of Neurological Pain Research and Therapy, Department of Neurology, University Hospital Schleswig-Holstein, Kiel, Germany
| | - L Arendt-Nielsen
- Center for Neuroplasticity and Pain, Department of Health Science and Technology, School of Medicine, Aalborg University, Aalborg, Denmark
- Department of Gastroenterology and Hepatology, Mech-Sense, Aalborg University Hospital, Aalborg, Denmark
- Steno Diabetes Center North Denmark, Clinical Institute, Aalborg University Hospital, Aalborg, Denmark
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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 rat and human. Pain 2024:00006396-990000000-00493. [PMID: 38198231 DOI: 10.1097/j.pain.0000000000003166] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [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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Haenen V, Meeus M, Devoogdt N, Morlion B, Dams L, De Groote A, Foubert A, De Groef A. Concurrent validity of dynamic bedside quantitative sensory testing paradigms in breast cancer survivors with persistent pain. Scand J Pain 2024; 24:sjpain-2023-0093. [PMID: 38498596 DOI: 10.1515/sjpain-2023-0093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 02/15/2024] [Indexed: 03/20/2024]
Abstract
BACKGROUND Studies on the concurrent validity of clinically applicable testing protocols for conditioned pain modulation (CPM) and temporal summation of pain (TSP) in breast cancer survivors (BCS) with persistent pain are lacking. OBJECTIVES This study investigated the concurrent validity of two bedside protocols for CPM and TSP in comparison to a respective reference protocol. The participants' preferences for bedside CPM and TSP protocols were assessed. METHODS Thirty BCS experiencing persistent pain were included in this study. Each participant underwent a reference test along with two bedside alternatives for assessing both TSP and CPM. For CPM, a cold pressor test (CPT) and blood pressure cuff (BPC) were used as conditioning stimulus. The test stimulus was elicited in parallel by pressure pain threshold after 45 and 90 s of conditioning at the lower limb. The CPM reference test consisted of parallel heat stimuli at the forearms using a two-thermode system. TSP was elicited using a von Frey monofilament (256 mN) and an algometer (98 kPa) at the affected site and opposite lower limb. The TSP reference test consisted of heat stimuli at the affected site and opposite lower limb. Participants' testing preference was examined using a purpose-designed questionnaire. Spearman's rank test examined the correlation between protocols. RESULTS The two bedside CPM protocols were strongly correlated (r = 0.787-0.939, p < 0.005). A strong correlation was found between the BPC protocol and reference test using the relative effect magnitude (r = 0.541-0.555, p < 0.005). The bedside TSP protocols were moderately correlated with each other only at the lower limb using absolute change scores (r = 0.455, p = 0.012). No significant correlation was found between the bedside and reference TSP protocols. CONCLUSION The significantly moderate to very strong correlations between the bedside protocols validate their interchangeability. Researchers and clinicians should be able to choose which bedside protocol they utilize; however, participants favored the use of a BPC and algometer for the evaluation of CPM and TSP, respectively.
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Affiliation(s)
- Vincent Haenen
- Research Group MOVANT, Department of Rehabilitation Sciences and Physiotherapy (REVAKI), University of Antwerp, Wilrijk, Belgium
- Research Group Rehabilitation in Internal Disorders (GRID), Department of Rehabilitation Sciences, KU Leuven, University of Leuven, Leuven, Belgium
- Pain in Motion International Research Group, www.paininmotion.be, Wilrijk, Belgium
| | - Mira Meeus
- Research Group MOVANT, Department of Rehabilitation Sciences and Physiotherapy (REVAKI), University of Antwerp, Wilrijk, Belgium
- Pain in Motion International Research Group, www.paininmotion.be, Wilrijk, Belgium
| | - Nele Devoogdt
- Research Group Rehabilitation in Internal Disorders (GRID), Department of Rehabilitation Sciences, KU Leuven, University of Leuven, Leuven, Belgium
- Centre for Lymphoedema, Department of Physical Medicine and Rehabilitation, University Hospitals Leuven, Leuven, Belgium
- Lymphovenous Centre, Department of Vascular Surgery, University Hospitals Leuven, Leuven, Belgium
| | - Bart Morlion
- Department of Cardiovascular Sciences, Section Anesthesiology & Algology, KU Leuven, University of Leuven, Leuven, Belgium
- The Leuven Centre for Algology and Pain Management, University Hospitals Leuven, Leuven, Belgium
| | - Lore Dams
- Research Group MOVANT, Department of Rehabilitation Sciences and Physiotherapy (REVAKI), University of Antwerp, Wilrijk, Belgium
- Research Group Rehabilitation in Internal Disorders (GRID), Department of Rehabilitation Sciences, KU Leuven, University of Leuven, Leuven, Belgium
- Department of Physical and Rehabilitation Medicine, University Hospitals Leuven, Leuven, Belgium
| | - Amber De Groote
- Research Group MOVANT, Department of Rehabilitation Sciences and Physiotherapy (REVAKI), University of Antwerp, Wilrijk, Belgium
- Pain in Motion International Research Group, www.paininmotion.be, Wilrijk, Belgium
| | - Anthe Foubert
- Research Group MOVANT, Department of Rehabilitation Sciences and Physiotherapy (REVAKI), University of Antwerp, Wilrijk, Belgium
- Pain in Motion International Research Group, www.paininmotion.be, Wilrijk, Belgium
- Faculté des Sciences de la Motricité, Université Catholique de Louvain, Louvain-La-Neuve, Wilrijk, Belgium
| | - An De Groef
- Research Group MOVANT, Department of Rehabilitation Sciences and Physiotherapy (REVAKI), University of Antwerp, Wilrijk, Belgium
- Research Group Rehabilitation in Internal Disorders (GRID), Department of Rehabilitation Sciences, KU Leuven, University of Leuven, Leuven, Belgium
- Pain in Motion International Research Group, www.paininmotion.be, Wilrijk, Belgium
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Mertens MG, Struyf F, Verborgt O, Dueñas L, Balasch-Bernat M, Navarro-Ledesma S, Fernandez-Sanchez M, Luque-Suarez A, Lluch Girbes E, Meeus M. Exploration of the clinical course and longitudinal correlations in frozen shoulder: The role of autonomic function, central pain processing, and psychological variables. A longitudinal multicenter prospective observational study. Musculoskelet Sci Pract 2023; 67:102857. [PMID: 37725869 DOI: 10.1016/j.msksp.2023.102857] [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: 04/11/2023] [Revised: 08/29/2023] [Accepted: 09/11/2023] [Indexed: 09/21/2023]
Abstract
BACKGROUND Altered central pain processing (CPP) and dysautonomia might play a role in the clinical course of frozen shoulder and psychological factors, like pain catastrophizing and hypervigilance, might influence clinical variables in frozen shoulder. OBJECTIVES To explore the clinical course of frozen shoulder regarding CPP, dysautonomia, pain catastrophizing, and hypervigilance and to explore whether longitudinal correlations between these outcomes and pain intensity were present. DESIGN prospective longitudinal observational study. METHOD Participants with frozen shoulder were recruited at hospitals and general practitioner practices and followed for 9 months. They completed six questionnaires (about demographics, shoulder pain and disability, pain intensity, pain catastrophizing, pain hypervigilance, and autonomic symptoms) and underwent tactile sensitivity (allodynia), pressure pain thresholds (hyperalgesia), temporal summation, and conditioned pain modulation during four timeframes (3-month intervals). RESULTS Initially, 149 participants with frozen shoulder were recruited and 88 completed all the measurements. An improvement from baseline to at least one follow-up measurement was found for shoulder pain and disability, pain intensity, pain catastrophizing, hypervigilance, and dysautonomia. A fair longitudinal correlation was found between pain intensity and catastrophizing and hypervigilance (r = 0.301-0.397). Poor longitudinal correlations were found between pain intensity and allodynia and hyperalgesia (r = -0.180-0.193), between pain catastrophizing and dysautonomia (r = 0.209) and between hypervigilance and hyperalgesia (r = -0.159). CONCLUSION Patients with frozen shoulder showed an early improvement that flattened with time in several pain and psychological variables over the course of 9 months. However, autonomic symptoms rather showed a late improvement over 9 months.
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Affiliation(s)
- Michel Gcam Mertens
- Research Group MOVANT, Department of Rehabilitation Sciences and Physiotherapy (REVAKI), University of Antwerp, Wilrijk, Belgium.
| | - Filip Struyf
- Research Group MOVANT, Department of Rehabilitation Sciences and Physiotherapy (REVAKI), University of Antwerp, Wilrijk, Belgium.
| | - Olivier Verborgt
- Research Group MOVANT, Department of Rehabilitation Sciences and Physiotherapy (REVAKI), University of Antwerp, Wilrijk, Belgium; Department of Orthopedic Surgery and Traumatology, AZ Monica, Antwerp, Belgium; Department of Orthopedic Surgery, University Hospital (UZA), Edegem, Belgium.
| | - Lirios Dueñas
- Physiotherapy in Motion, Multi-Specialty Research Group (PTinMOTION), Department of Physical Therapy, University of Valencia, 46010, Valencia, Spain.
| | - Mercè Balasch-Bernat
- Physiotherapy in Motion, Multi-Specialty Research Group (PTinMOTION), Department of Physical Therapy, University of Valencia, 46010, Valencia, Spain.
| | - Santiago Navarro-Ledesma
- Department of Physiotherapy, Faculty of Health Sciences, Campus of Melilla, University of Granada, Querol Street 5, 52004, Melilla, Spain.
| | | | | | - Enrique Lluch Girbes
- Pain in Motion International Research Group(1), Belgium; Physiotherapy in Motion, Multi-Specialty Research Group (PTinMOTION), Department of Physical Therapy, University of Valencia, 46010, Valencia, Spain; Department of Physiotherapy, Human Physiology and Anatomy (KIMA), Faculty of Physical Education & Physiotherapy, Vrije Universiteit Brussel, Brussels, Belgium.
| | - Mira Meeus
- Research Group MOVANT, Department of Rehabilitation Sciences and Physiotherapy (REVAKI), University of Antwerp, Wilrijk, Belgium; Pain in Motion International Research Group(1), Belgium; Department of Rehabilitation Sciences, Ghent University, Ghent, Belgium.
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Foubert A, Chantrain VA, Meeus M, Maes P, Haenen V, Lobet S, Lambert C, Hermans C, Roussel N. Psychophysical assessment of pain in adults with moderate and severe haemophilia: A cross-sectional study. Haemophilia 2023; 29:1243-1258. [PMID: 37528565 DOI: 10.1111/hae.14830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 06/19/2023] [Accepted: 07/14/2023] [Indexed: 08/03/2023]
Abstract
BACKGROUND Joint pain is the hallmark of haemophilia; therefore it seems clinically rather a musculoskeletal than a bleeding disorder. Although joint pain in people with haemophilia (PwH) is a complex and multidimensional problem, pain assessment remains primarily focused on the structural evaluation of their joints. Whereas, only few data are available on the potential implication of psychophysical and psychological factors. OBJECTIVE This study aimed to perform a psychophysical pain assessment including quantitative sensory testing (QST) and an evaluation of psychological factors in a large sample of PwH, to get insight into the individuals' pain system. METHODS Ninety-nine adults (36.9 ± 13.5 years) with moderate/severe haemophilia A/B and 46 healthy controls filled in self-reported pain and psychological questionnaires and underwent a QST evaluation including static and dynamic tests. Static tests focused on the determination of thermal detection and pain thresholds and mechanical pressure pain thresholds. Dynamic tests evaluated pain facilitation and the efficacy of endogenous pain inhibition. Besides comparing PwH and healthy controls, between-subgroup differences were studied in PwH based on their pain distribution. RESULTS The study revealed increased thermal and mechanical pain sensitivity and the presence of unhelpful psychological factors such as anxiety/depression in PwH. Among the subgroups, especially PwH with widespread pain showed altered somatosensory functioning. Enhanced pain facilitation and impaired efficacy of endogenous pain inhibition in PwH could not be observed. CONCLUSION Altered somatosensory functioning and unhelpful psychological factors, appear to play an important role in the pathophysiology of pain in PwH, especially in PwH with widespread pain.
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Affiliation(s)
- Anthe Foubert
- Research Group MOVANT, Department of Rehabilitation Sciences and Physiotherapy (REVAKI), University of Antwerp, Wilrijk, Belgium
- Pain in Motion, International Research Group, www.paininmotion.be
- Faculté des Sciences de la Motricité, Université catholique de Louvain, Louvain-La-Neuve, Belgium
| | - Valérie-Anne Chantrain
- Research Group MOVANT, Department of Rehabilitation Sciences and Physiotherapy (REVAKI), University of Antwerp, Wilrijk, Belgium
- Pain in Motion, International Research Group, www.paininmotion.be
- Faculté des Sciences de la Motricité, Université catholique de Louvain, Louvain-La-Neuve, Belgium
- Neuromusculoskeletal Lab (NMSK), Secteur des Sciences de la Santé, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Louvain-la-Neuve, Belgium
| | - Mira Meeus
- Research Group MOVANT, Department of Rehabilitation Sciences and Physiotherapy (REVAKI), University of Antwerp, Wilrijk, Belgium
- Pain in Motion, International Research Group, www.paininmotion.be
- Department of Rehabilitation Sciences, Ghent University, Ghent, Belgium
| | - Philip Maes
- Department of Paediatrics, University Hospital Antwerp, Edegem, Belgium
- Laboratory of Experimental Medicine and Pediatrics, University of Antwerp, Antwerp, Belgium
| | - Vincent Haenen
- Research Group MOVANT, Department of Rehabilitation Sciences and Physiotherapy (REVAKI), University of Antwerp, Wilrijk, Belgium
- Pain in Motion, International Research Group, www.paininmotion.be
- Department of Rehabilitation Sciences, KU Leuven, University of Leuven, Leuven, Belgium
| | - Sébastien Lobet
- Neuromusculoskeletal Lab (NMSK), Secteur des Sciences de la Santé, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Louvain-la-Neuve, Belgium
- Haemostasis and Thrombosis Unit, Division of Hematology, Clinique universitaires Saint-Luc, Brussels, Belgium
- Secteur de kinésithérapie, Cliniques universitaires Saint-Luc, Brussels, Belgium
| | - Catherine Lambert
- Haemostasis and Thrombosis Unit, Division of Hematology, Clinique universitaires Saint-Luc, Brussels, Belgium
| | - Cédric Hermans
- Haemostasis and Thrombosis Unit, Division of Hematology, Clinique universitaires Saint-Luc, Brussels, Belgium
| | - Nathalie Roussel
- Research Group MOVANT, Department of Rehabilitation Sciences and Physiotherapy (REVAKI), University of Antwerp, Wilrijk, Belgium
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Knezevic A, Kovacevic M, Jeremic-Knezevic M, Nikolasevic Z, Tomasevic-Todorovic S, Zivanovic Z, Spasojevic T, Garipi E, Vojnovic L, Popovic D, Neblett R. Patients with neuropathic pain from lumbosacral radiculopathy demonstrate similar pressure pain thresholds and conditioned pain modulation to those with fibromyalgia. Neurophysiol Clin 2023; 53:102841. [PMID: 36716611 DOI: 10.1016/j.neucli.2022.102841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 11/13/2022] [Accepted: 12/17/2022] [Indexed: 01/29/2023] Open
Abstract
OBJECTIVE The purpose of the study was to evaluate pain thresholds, impairment of the endogenous pain modulatory system, and self-reported cognitive-emotional and central sensitization-related symptoms among three subject groups: a rarely studied patient cohort with neuropathic pain from lumbosacral radiculopathy (NPLSR), patients with fibromyalgia (FM) and healthy controls (HC). METHODS Patient-reported pain-related symptomology was evaluated with psychometricallyvalidated questionnaires. Pressure pain threshold (PPT), heat pain threshold (HPT), and cold pain threshold (CPT) were assessed in the low back and contralateral forearm. Conditioned pain modulation (CPM) was evaluated with a recently introduced methodology that accounts for a standard error of measurement. RESULTS Compared to the HC subjects, the FM and NPLSR subjects had significantly lower pain thresholds and more CPM impairment. No significant differences in PPT and CPM were observed between the FM and NPLSR groups. Significant group differences were found in self-reported symptoms of depression, anxiety, stress, and central sensitization. Self-reported symptom severity increased in a stair-step fashion, with the HC group scoring lowest and FM group scoring highest. CONCLUSION The NPLSR group manifested CPM dysfunction and pressure hyperalgesia at similar levels to the FM group, indicating that these two chronic pain syndromes, likely based on different pathophysiological mechanisms, in fact share some common pain processing features. However, though both patient groups demonstrated similarities in pain processing, self-reported cognitive-emotional and central sensitization-related symptom severity was significantly higher in the FM cohort, which distinguished them from the chronic NPLSR cohort.
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Affiliation(s)
- Aleksandar Knezevic
- Faculty of Medicine University of Novi Sad, Serbia; Medical Rehabilitation Clinic University Clinical Centre of Vojvodina, Serbia.
| | | | | | | | - Snezana Tomasevic-Todorovic
- Faculty of Medicine University of Novi Sad, Serbia; Medical Rehabilitation Clinic University Clinical Centre of Vojvodina, Serbia
| | - Zeljko Zivanovic
- Faculty of Medicine University of Novi Sad, Serbia; Neurology Clinic University Clinical Centre of Vojvodina, Serbia
| | - Tijana Spasojevic
- Faculty of Medicine University of Novi Sad, Serbia; Medical Rehabilitation Clinic University Clinical Centre of Vojvodina, Serbia
| | - Enis Garipi
- Faculty of Medicine University of Novi Sad, Serbia; Medical Rehabilitation Clinic University Clinical Centre of Vojvodina, Serbia
| | - Larisa Vojnovic
- Faculty of Medicine University of Novi Sad, Serbia; Medical Rehabilitation Clinic University Clinical Centre of Vojvodina, Serbia
| | - Dunja Popovic
- Faculty of Medicine University of Novi Sad, Serbia; Medical Rehabilitation Clinic University Clinical Centre of Vojvodina, Serbia
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10
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Overton M, Swain N, Falling C, Gwynne-Jones D, Fillingim R, Mani R. Activity-related pain predicts pain and functional outcomes in people with knee osteoarthritis: A longitudinal study. FRONTIERS IN PAIN RESEARCH (LAUSANNE, SWITZERLAND) 2023; 3:1082252. [PMID: 36713644 PMCID: PMC9880771 DOI: 10.3389/fpain.2022.1082252] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 12/19/2022] [Indexed: 01/14/2023]
Abstract
Knee Osteoarthritis (OA) is a prevalent musculoskeletal condition, commonly resulting in pain and disability. However, pain and disability in this population are poorly related with the degree of structural joint damage. Underlying pain mechanisms, including activity-related pain and sensitization assessed via Quantitative Sensory Testing (QST), may better predict pain and functional outcomes of those with knee OA. Therefore, the aim of this study was to explore whether activity-related pain and sensitization assessed via QST predict future pain, function, fatigue, physical performance and quality of life outcomes in those living in the community with knee OA. Eighty-six participants with knee OA were recruited in Dunedin, New Zealand. Those eligible to participate underwent baseline testing including QST as well as measures of activity-related pain including Movement-evoked Pain (MEP) and Sensitivity to Physical Activity (SPA). Outcome measures exploring pain, function, fatigue and quality of life outcomes were collected at baseline, and two follow-up periods (two and nine weeks). Univariable linear regression models were developed followed by multivariable linear regression models for each prognostic marker adjusting for age, gender, BMI, OA duration, baseline pain intensity and socioeconomic status. Activity-related measures of pain, including MEP and SPA, demonstrated predictive associations with pain and functional outcomes prospectively in those with knee OA. Therefore, those demonstrating activity-related pain are at future risk of greater pain, disability and reduced quality of life. Larger, externally validated longitudinal studies are required which include individuals with more severe knee OA.
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Affiliation(s)
- Mark Overton
- Centre for Health, Activity and Rehabilitation Research, School of Physiotherapy, University of Otago, Dunedin, New Zealand,Correspondence: Mark Overton
| | - Nicola Swain
- Centre for Health, Activity and Rehabilitation Research, School of Physiotherapy, University of Otago, Dunedin, New Zealand
| | - Carrie Falling
- Centre for Health, Activity and Rehabilitation Research, School of Physiotherapy, University of Otago, Dunedin, New Zealand
| | - David Gwynne-Jones
- Department of Surgical Sciences, Otago School of Medicine, University of Otago, Dunedin, New Zealand
| | - Roger Fillingim
- Pain Research and Intervention Center of Excellence (PRICE), Department of Community Dentistry and Behavioural Science, University of Florida, Gainesville, FL, United States
| | - Ramakrishnan Mani
- Centre for Health, Activity and Rehabilitation Research, School of Physiotherapy, University of Otago, Dunedin, New Zealand
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11
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Lütolf R, De Schoenmacker I, Rosner J, Sirucek L, Schweinhardt P, Curt A, Hubli M. Anti- and Pro-Nociceptive mechanisms in neuropathic pain after human spinal cord injury. Eur J Pain 2022; 26:2176-2187. [PMID: 36000307 PMCID: PMC9826499 DOI: 10.1002/ejp.2029] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 08/01/2022] [Accepted: 08/20/2022] [Indexed: 01/11/2023]
Abstract
BACKGROUND Deficient endogenous pain modulation and increased nociceptive excitability are key features of central sensitization and can be assessed in humans by conditioned pain modulation (CPM, anti-nociceptive) and temporal summation of pain (TSP, pro-nociceptive), respectively. This study aimed to investigate these measures as proxies for central sensitization in subjects with chronic neuropathic pain (NP) after spinal cord injury (SCI). METHODS In paraplegic subjects with NP (SCI-NP; n = 17) and healthy controls (HC; n = 17), parallel and sequential sham-controlled CPM paradigms were performed using pressure pain threshold at the hand, that is, above lesion level, as test stimulus. The conditioning stimulus was a noxious cold (verum) or lukewarm water bath (sham) applied contralaterally. Regarding pro-nociceptive mechanisms, a TSP protocol with individually-adjusted pressure pain stimuli at the thenar eminence was used. CPM and TSP magnitudes were related to intensity and spatial extent of spontaneous NP. RESULTS Neither the parallel nor sequential sham-controlled CPM paradigm showed any significant inhibition of above-level pressure pain thresholds for SCI-NP or HC. Accordingly, no group difference in CPM capacity was found, however, subjects with more intense spontaneous NP showed lower inhibitory CPM capacity. TSP was observed for both groups but was not enhanced in SCI-NP. CONCLUSIONS Our results do not support altered above-level anti- or pro-nociceptive mechanisms in SCI-NP compared with HC; however, they also highlight the relevance of spontaneous NP intensity with regards to the capacity of endogenous pain modulation in SCI subjects. SIGNIFICANCE Central sensitization encompasses deficient endogenous pain modulation and increased nociceptive excitability. These two mechanisms can be assessed in humans by conditioned pain modulation and temporal summation of pain, respectively. Our data demonstrates a lack of descending pain inhibition only in subjects with severe neuropathic pain which may hint towards central sensitization at spinal and/or supra-spinal levels. Disentangling the mechanisms of endogenous pain modulation and neuronal hyperexcitability might improve mechanism-based treatment of neuropathic pain in subjects with spinal cord injury.
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Affiliation(s)
- Robin Lütolf
- Spinal Cord Injury Center, Balgrist University HospitalUniversity of ZurichZurichSwitzerland
| | - Iara De Schoenmacker
- Spinal Cord Injury Center, Balgrist University HospitalUniversity of ZurichZurichSwitzerland
| | - Jan Rosner
- Spinal Cord Injury Center, Balgrist University HospitalUniversity of ZurichZurichSwitzerland,Department of NeurologyUniversity Hospital Bern, Inselspital, University of BernBernSwitzerland
| | - Laura Sirucek
- Integrative Spinal Research, Department of Chiropractic MedicineBalgrist University Hospital, University of ZurichZurichSwitzerland
| | - Petra Schweinhardt
- Integrative Spinal Research, Department of Chiropractic MedicineBalgrist University Hospital, University of ZurichZurichSwitzerland
| | - Armin Curt
- Spinal Cord Injury Center, Balgrist University HospitalUniversity of ZurichZurichSwitzerland
| | - Michèle Hubli
- Spinal Cord Injury Center, Balgrist University HospitalUniversity of ZurichZurichSwitzerland
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12
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Monoaminergic mediation of hyperalgesic and analgesic descending control of nociception in mice. Pain 2022; 164:1096-1105. [PMID: 36448969 DOI: 10.1097/j.pain.0000000000002806] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 10/03/2022] [Indexed: 12/02/2022]
Abstract
ABSTRACT Descending control of nociception (DCN; also known as conditioned pain modulation [CPM], the behavioral correlate of diffuse noxious inhibitory controls) is the phenomenon whereby pain inhibits pain in another part of the body and is the subject of increasing study because it may represent a biomarker of chronic pain. We recently discovered that pain modulation upon application of a DCN paradigm involving low-intensity test stimuli occurs in the direction of hyperalgesia in healthy mice and rats, whereas the use of high-intensity stimuli produces analgesia. To elucidate the physiological mechanisms underlying hyperalgesic DCN, we administered agonists and antagonists of norepinephrine (NE) and serotonin (5-HT) receptors, key neurochemical players in the production of analgesic DCN. We find that three different monoamine reuptake inhibitors-the NE-selective reboxetine, the 5-HT-selective fluoxetine, and the dual NE/5-HT agonist duloxetine-all abolish hyperalgesic DCN when administered into the spinal cord (but not systemically), with no effect on heat or mechanical pain sensitivity. Reboxetine's attenuation of hyperalgesic DCN is mediated by α 2 -adrenergic receptors (i.e., blocked by atipamezole), and fluoxetine's effect is mediated by 5-HT 7 receptors (i.e., blocked by SB269970). In contrast, analgesic DCN was found to be reversed by atipamezole and SB269970 themselves, with no effect of reboxetine or fluoxetine. Thus, hyperalgesic DCN appears to be the neurochemical opposite to analgesic DCN. These data further validate and help elucidate a pre-clinical paradigm that mimics dysfunctional CPM, and thus may form the basis of translational experiments that aim to reveal preventative pharmacological strategies for individuals predisposed to persistent pain.
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13
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Santos MS, Santos PDJ, Vasconcelos ABS, Gomes ACA, de Oliveira LM, Souza PRM, Heredia‐Elvar JR, Da Silva‐Grigoletto ME. Neuroendocrine effects of a single bout of functional and core stabilization training in women with chronic nonspecific low back pain: A crossover study. Physiol Rep 2022; 10:e15365. [PMID: 36065850 PMCID: PMC9446407 DOI: 10.14814/phy2.15365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 06/02/2022] [Accepted: 06/06/2022] [Indexed: 06/15/2023] Open
Abstract
Exercise-induced hypoalgesia (EIH) is characterized as the pain reduction after an exercise session and it seems to be related to the release of plasma β-endorphin. In this sense, the core stabilization training (CT) has been suggested for patients with chronic nonspecific low back pain (CNSLBP), but it is unclear whether it induces EIH. Patients with CNSLBP have neuromotor dysfunctions that can affect the performance of functional tasks, thus, performing functional training (FT) could improve motor control and promote EIH, since functional training uses multi-joint exercises that aim to improve the functionality of actions performed in daily life. EIH is usually assessed using quantitative sensory tests (QST) such as conditioned pain modulation, pressure pain threshold, and temporal summation. Thus, the sum of parameters from quantitative sensory tests and plasma β-endorphin would make it possible to understand what the neuroendocrine effects of FT and CT session are. Our study compared the acute effect of CT and FT on the EIH and plasma β-endorphin release, and correlated plasma β-endorphin with quantitative sensory testing in patients with CNSLBP. Eighteen women performed two training sessions (CT and FT) with an interval of 48 h between sessions. EIH was assessed by QST and plasma β-endorphin levels. Results showed that only FT significantly increased plasma β-endorphin (FT p < 0.01; CT p = 0.45), which correlated with pain pressure threshold (PPT) and conditioned pain modulation (CPM). However, QST values were not different in women with CNSLBP after CT or FT protocols. Plasma β-endorphin correlated with PPT and CPM, however, the same did not occur with a temporal summation.
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Affiliation(s)
- Marta Silva Santos
- Department of Physical Education, Functional Training GroupFederal University of SergipeSão CristóvãoBrazil
| | - Poliana de Jesus Santos
- Department of Physical Education, Functional Training GroupFederal University of SergipeSão CristóvãoBrazil
| | | | - Ana Carolina Amado Gomes
- Institute of Biological Sciences, Laboratory of Immunology and Genomics of ParasitesFederal University of Minas GeraisBelo HorizonteBrazil
| | - Luciana Maria de Oliveira
- Department of Morphology, Laboratory of Entomology and Tropical ParasitologyFederal University of SergipeSão CristóvãoBrazil
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14
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Vollert J, Trewartha N, Kemkowski D, Cremer AF, Zahn P, Segelcke D, Pogatzki-Zahn EM. Conditioned pain modulation and offset analgesia: Influence of sex, sex hormone levels and menstrual cycle on the magnitude and retest reliability in healthy participants. Eur J Pain 2022; 26:1938-1949. [PMID: 35856832 DOI: 10.1002/ejp.2014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 06/21/2022] [Accepted: 07/16/2022] [Indexed: 11/07/2022]
Abstract
BACKGROUND Conditioned Pain Modulation (CPM) and offset analgesia quantify impairment of endogenous pain modulation, but magnitude and reliability vary broadly between studies, indicating influencing factors that are not currently controlled for. The aim of this study was to quantify magnitude and retest reliability of CPM and offset analgesia in healthy participants, whilst investigating the influence of sex and sex hormone levels. METHODS 62 participants (30 female) completed the study. We tested CPM (heat-cold paradigm) and offset analgesia on six days within two menstrual cycles (tests were performed in each phase of two subsequent menstrual cycles, with similar time-points for men). RESULTS Median offset effect was -29.4% in female and -22.5% in male participants (as change from initial stimulus). Median early CPM effects were -16.7% for women versus -13.3% for men. Reliability (intra-class correlation coefficient (ICC)) was similar between the main measures, offset effect (female: 0.48, male: 0.47) and early CPM effect (female: 0.49, male: 0.43). There was significant variance between individual experimental parameters within protocols but not between sexes or menstrual phases. While oestradiol and progesterone did not correlate with the magnitude of effect within sexes, we found that testosterone levels explained an estimated 5-10% of variance within individual responses in all sexes. CONCLUSIONS Our results show that the reliability of both CPM effect and offset analgesia were independent of sex and menstrual cycle phase. The magnitude of CPM and offset effects were weakly influenced by sex and testosterone levels, indicating an area for future research, rather than clinical significance. SIGNIFICANCE STATEMENT This study investigated CPM and offset analgesia in parallel, across sexes and during two menstrual cycles while assessing the impact of sex hormones. Reliability seems to depend on experimental parameters rather than participant characteristics, while the magnitude of effect could be weakly linked to sex hormones and sex.
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Affiliation(s)
- J Vollert
- Pain Research, MSk Lab, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, UK.,Division of Neurological Pain Research and Therapy, Department of Neurology, University Hospital of Schleswig-Holstein, Campus Kiel, Germany.,Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital Münster, Albert-Schweitzer-Campus 1, Münster.,Neurophysiology, Mannheim Center of Translational Neuroscience (MCTN), Medical Faculty Mannheim, Heidelberg University, Germany
| | - N Trewartha
- Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital Münster, Albert-Schweitzer-Campus 1, Münster
| | - D Kemkowski
- Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital Münster, Albert-Schweitzer-Campus 1, Münster
| | - A F Cremer
- Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital Münster, Albert-Schweitzer-Campus 1, Münster
| | - P Zahn
- Clinic for Anaesthesiology, Intensive and Pain Medicine, Ruhr-University Bochum, BG-University Hospital Bergmannsheil gGmbH, Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - D Segelcke
- Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital Münster, Albert-Schweitzer-Campus 1, Münster
| | - E M Pogatzki-Zahn
- Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital Münster, Albert-Schweitzer-Campus 1, Münster
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15
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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: 16] [Impact Index Per Article: 8.0] [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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16
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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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17
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Lukacs MJ, Melling CWJ, Walton DM. Exploring the relationship between meaningful conditioned pain modulation and stress system reactivity in healthy adults following exposure to the cold pressor task. Musculoskelet Sci Pract 2022; 57:102489. [PMID: 34861579 DOI: 10.1016/j.msksp.2021.102489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 10/23/2021] [Accepted: 11/19/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND The sympathetic nervous system (SNS) and hypothalamic-pituitary-adrenal (HPA) axis have been implicated in conditioned pain modulation (CPM). As there has recently been a push to identify meaningful CPM responses based on ± 2 SEM of the test stimulus, we sought to evaluate if meaningful CPM had relationships with both SNS and HPA axis reactivity. METHODS 50 university-aged healthy participants (25 males, 25 females) underwent evaluation of pressure pain detection threshold (PPDT), conditioned pain modulation (CPM), galvanic skin response (GSR) and salivary cortisol before and after a cold pressor test (CPT). Meaningful CPM was evaluated based on change ±2 SEM of baseline PPDT to classify participants as experiencing inhibition of pain, facilitation, or non-response. RESULTS As a group, there were no significant changes in PPDT or salivary cortisol after exposure to noxious cold. GSR was significantly elevated from baseline values during the CPT, and 10 min after (p < 0.001). When meaningful CPM was assessed, only 30% of participants experienced inhibitory CPM. Within this group, there was a large positive correlation ranging from r = 0.63 to 0.69 (p < 0.01) between CPM and the absolute change in GSR from baseline to immersion, and the immediate 5 min after immersion. CONCLUSIONS This work continues to support the growing body of literature suggesting that CPM is not universally experienced. Inhibitory CPM may be associated with an increase in SNS activity for healthy participants in reaction to noxious cold. Future work is required to ascertain individual characteristics (e.g., age, sex) that relate to CPM responses.
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Affiliation(s)
- Michael J Lukacs
- Health and Rehabilitation Sciences, Western University, Canada; Bone and Joint Institute, Western University, Canada.
| | | | - David M Walton
- Bone and Joint Institute, Western University, Canada; School of Physical Therapy, Western University, Canada
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18
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Morris MC, Bruehl S, Stone AL, Garber J, Smith C, Palermo TM, Walker LS. Does Quantitative Sensory Testing Improve Prediction of Chronic Pain Trajectories? A Longitudinal Study of Youth With Functional Abdominal Pain Participating in a Randomized Controlled Trial of Cognitive Behavioral Treatment. Clin J Pain 2021; 37:648-656. [PMID: 34192714 PMCID: PMC8373792 DOI: 10.1097/ajp.0000000000000956] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 06/10/2021] [Indexed: 12/19/2022]
Abstract
OBJECTIVES Youth with functional abdominal pain (FAP) experience significant pain-related distress and functional impairment. Although quantitative sensory testing protocols have identified alterations in pain modulatory systems that distinguish youth with FAP from healthy controls, the extent to which evoked pain responses predict subsequent trajectories of pain symptoms and disability over and above established psychosocial risk factors is unclear. METHODS The present study included 183 adolescents with FAP who were enrolled in a randomized controlled trial comparing an 8-week, internet-delivered program of cognitive behavior therapy (n=90) or pain education (n=93). Participants completed a quantitative sensory testing protocol before the intervention and were followed for 12-month posttreatment. RESULTS Whereas adolescents with FAP who exhibited stronger baseline conditioned pain modulation (CPM) reported decreases in pain-related interference over follow-up (b=-0.858, SE=0.396, P=0.032), those with weaker CPM exhibited high, relatively stable levels of pain-related interference over time (b=-0.642, SE=0.400, P=0.110). CPM status predicted changes in pain-related interference after controlling for the effects of treatment condition and psychosocial risk factors. Static measures of pain sensitivity (ie, pain threshold, pain tolerance) and temporal summation of second pain were not associated with changes in measures of abdominal pain, gastrointestinal symptom severity, or pain-related interference over follow-up. DISCUSSION The present findings contribute to a growing literature on the predictive utility of quantitative sensory testing indices and suggest that CPM may complement existing psychosocial risk measures in determining individualized pain-related risk profiles.
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Affiliation(s)
- Matthew C. Morris
- Department of Psychiatry and Human Behavior, University of Mississippi Medical Center, Jackson, MS
| | - Stephen Bruehl
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN
| | - Amanda L. Stone
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN
| | - Judy Garber
- Department of Psychology and Human Development, Vanderbilt University, Nashville, TN
| | - Craig Smith
- Department of Psychology and Human Development, Vanderbilt University, Nashville, TN
| | - Tonya M. Palermo
- Department of Anesthesiology and Pain Medicine, University of Washington School of Medicine, Seattle, WA
| | - Lynn S. Walker
- Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, TN
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Bannister K, Kucharczyk MW, Graven-Nielsen T, Porreca F. Introducing descending control of nociception: a measure of diffuse noxious inhibitory controls in conscious animals. Pain 2021; 162:1957-1959. [PMID: 33470750 PMCID: PMC8205930 DOI: 10.1097/j.pain.0000000000002203] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 01/10/2021] [Indexed: 12/25/2022]
Affiliation(s)
- Kirsty Bannister
- Central Modulation of Pain, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, SE1 1UL. UK
| | - Mateusz W. Kucharczyk
- Central Modulation of Pain, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, SE1 1UL. UK
| | - Thomas Graven-Nielsen
- Center for Neuroplasticity and Pain (CNAP), Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark
| | - Frank Porreca
- Department of Pharmacology, University of Arizona, Tucson, Arizona, AZ 85721. USA
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20
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Phenotyping peripheral neuropathic pain in male and female adolescents: pain descriptors, somatosensory profiles, conditioned pain modulation, and child-parent reported disability. Pain 2021; 162:1732-1748. [PMID: 33394878 DOI: 10.1097/j.pain.0000000000002172] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Accepted: 11/09/2020] [Indexed: 12/13/2022]
Abstract
ABSTRACT Neuropathic pain (NeuP) can be difficult to diagnose and manage in children. Data regarding prevalence and sex-dependent differences are limited, and more detailed phenotyping is needed. This observational cohort study recruited adolescents (10-17 years) with NeuP or complex regional pain syndrome (CRPS). After pain history and NeuP questionnaires, quantitative sensory testing was performed. Individual z-score plots were calculated with body-region control measures and matched to mechanism-related sensory profiles (sensory loss, thermal hyperalgesia, and mechanical hyperalgesia). Conditioned pain modulation was assessed with pressure pain threshold and a contralateral cold conditioning stimulus, and meaningful conditioned pain modulation defined as twice the standard error of measurement. Patients and parents completed validated questionnaires for child quality of life (QoL), pain catastrophizing, and self-reported anxiety/depression. Males (n = 23) and females (n = 43) with NeuP (n = 52) or CRPS (n = 14) reported moderate-severe pain with neuropathic sensory descriptors. Mixed patterns of sensory gain/loss at pain sites were not sex-dependent. Thermal hyperalgesia was common in both NeuP and CRPS, whereas sensory loss occurred only with NeuP and in a smaller proportion than adult cohorts. Conditioned pain modulation was inhibitory in 54%, facilitatory in 14%, and nonresponders had variable cold conditioning sensitivity. Males and females reported marked impairment of QoL, increased emotional distress, and pain catastrophising. Child-parent QoL scores correlated, but catastrophizing scores were discordant when parents or adolescents reported higher anxiety/depression. NeuP in adolescents is associated with significant pain, physical impairment, and psychosocial impairment. Quantifying alterations in somatosensory profiles, descending modulation, child and parent psychological function will inform individualized therapy and stratification for future clinical trials.
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21
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Neuropathic pain in children: Steps towards improved recognition and management. EBioMedicine 2020; 62:103124. [PMID: 33248373 PMCID: PMC7704400 DOI: 10.1016/j.ebiom.2020.103124] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 10/21/2020] [Accepted: 10/28/2020] [Indexed: 12/16/2022] Open
Abstract
Neuropathic pain in children can be severe and persistent, difficult to recognise and manage, and associated with significant pain-related disability. Recognition based on clinical history and sensory descriptors is challenging in young children, and screening tools require further validation at older ages. Confirmatory tests can identify the disease or lesion of the somatosensory nervous system resulting in neuropathic pain, but feasibility and interpretation may be influenced by age- and sex-dependent changes throughout development. Quantitative sensory testing identifies specific mechanism-related sensory profiles; brain imaging is a potential biomarker of alterations in central processing and modulation of both sensory and affective components of pain; and genetic analysis can reveal known and new causes of neuropathic pain. Alongside existing patient- and parent-reported outcome measures, somatosensory system research methodologies and validation of mechanism-based standardised end-points may inform individualised therapy and stratification for clinical trials that will improve evidence-based management of neuropathic pain in children.
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22
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Wang D, Merkle SL, Lee JE, Sluka KA, Rakel B, Graven-Nielsen T, Frey-Law LA. Multisensory Sensitivity is Related to Deep-Tissue but Not Cutaneous Pain Sensitivity in Healthy Individuals. J Pain Res 2020; 13:2493-2508. [PMID: 33116791 PMCID: PMC7548328 DOI: 10.2147/jpr.s267972] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 08/29/2020] [Indexed: 12/18/2022] Open
Abstract
PURPOSE Some individuals with chronic pain find daily life sensations (eg, noise, light, or touch) aversive. This amplification of multisensory sensations has been associated with centrally mediated plasticity; for example, greater multisensory sensitivity (MSS) occurs in patients with fibromyalgia than rheumatoid arthritis. However, whether MSS preferentially relates to pain measures which reflect central influences (eg, dynamic quantitative sensory testing (QST) or referred pain), or whether the MSS-pain relationship requires priming from chronic pain, is unknown. Thus, this cross-sectional study investigated the relationships between MSS assessed in a pain-free state and evoked pain sensitivity. METHODS Experimental intramuscular infusion pain and multiple static and dynamic QST were assessed in 465 healthy, pain-free adults: pain thresholds using pressure (PPTs) and heat (HPTs), temporal summation of pain (TSP) using pressure, heat or punctate stimuli, and conditioned pain modulation (CPM) using pressure or heat test stimuli. MSS was assessed using 7 items from Barsky's Somatosensory Amplification Scale. Differences in pain and QST between sex-specific MSS quartiles were assessed, adjusting for multiple comparisons. All participants completed at least one intramuscular infusion condition, but not all were asked to complete each QST (n=166-465). RESULTS Both static and dynamic QST differed between highest and lowest MSS quartiles using pressure stimuli: lower PPTs (adjusted-p<0.01); increased pressure TSP (adjusted-p=0.02); lower pressure CPM (adjusted-p=0.01). However, none of the heat or punctate QST measures (HPTs, TSP, or CPM) differed between MSS quartiles (adjusted-p>0.05). Odds of experiencing TSP or referred pain was not greater, whereas CPM was 8-fold less likely, in those with highest MSS. CONCLUSION Normal variation in non-noxious MSS is related to both static and dynamic pain sensitivity, without sensitization associated with chronic pain, but is dependent on the QST stimulus. Thus, common influences on MSS and pain sensitivity may involve central mechanisms but are likely more complex than previously recognized.
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Affiliation(s)
- Dan Wang
- Department of Physical Therapy and Rehabilitation Science, Carver College of Medicine, University of Iowa, Iowa City, IA, USA
| | - Shannon L Merkle
- United States Army Research Institute of Environmental Medicine (USARIEM), Natick, MA, USA
| | - Jennifer E Lee
- Department of Psychology, Mount Mercy University, Cedar Rapids, IA, USA
- College of Nursing, University of Iowa, Iowa City, IA, USA
| | - Kathleen A Sluka
- Department of Physical Therapy and Rehabilitation Science, Carver College of Medicine, University of Iowa, Iowa City, IA, USA
| | - Barbara Rakel
- College of Nursing, University of Iowa, Iowa City, IA, USA
| | - Thomas Graven-Nielsen
- Center for Neuroplasticity and Pain (CNAP), SMI, Aalborg University, Aalborg, Denmark
| | - Laura A Frey-Law
- Department of Physical Therapy and Rehabilitation Science, Carver College of Medicine, University of Iowa, Iowa City, IA, USA
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