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Rubal-Otero L, Gil-Ugidos A, Villar AJG, Carrillo-de-la-Peña MT. Temporal summation of second pain is affected by cognitive load. J Neurosci Res 2024; 102:e25363. [PMID: 38895850 DOI: 10.1002/jnr.25363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 05/30/2024] [Accepted: 06/04/2024] [Indexed: 06/21/2024]
Abstract
This work attempted to clarify the interaction of cognition and pain sensitization during a paradigm of Temporal Summation of Second Pain (TSSP). We analyzed pain ratings and electroencephalographic (EEG) activity obtained from 21 healthy participants during the presentation of four experimental conditions that differed in the manipulation of attention to painful stimuli or working memory load (Attention to hand & TSSP; 0-back & TSSP (low cognitive load); 2-back & TSSP (high cognitive load); 2-back (without pain)). We found that the TSSP was reduced when the attention was diverted and the cognitive load increased, and this reduction was accompanied by higher midfrontal theta activity and lower posterior alpha and central beta activity. Although it is well established that TSSP is a phenomenon that occurs at the spinal level, here we show that it is also affected by supraspinal attentional mechanisms. Delivery of painful repeated stimuli did not affect the performance of the 2-back task but was associated with smaller amplitudes of attentional event-related potentials (ERPs) after standard stimuli (not the target). The study of brain activity during TSSP allowed to clarify the role of top-down attentional modulation in pain sensitization processes. Results contribute to a better understanding of cognitive dysfunction in pain conditions and reinforce the use of therapeutic strategies based on distracting attention away from pain.
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Affiliation(s)
- Lara Rubal-Otero
- Brain and Pain (BaP) Lab, Department of Clinical Psychology and Psychobiology, University of Santiago de Compostela (USC), Santiago de Compostela, Spain
| | - Antonio Gil-Ugidos
- Brain and Pain (BaP) Lab, Department of Clinical Psychology and Psychobiology, University of Santiago de Compostela (USC), Santiago de Compostela, Spain
| | - Alberto Jacobo González Villar
- Psychological Neuroscience Lab, Centro de Investigação em Psicologia, School of Psychology, University of Minho, Campus de Gualtar, Braga, Portugal
| | - María Teresa Carrillo-de-la-Peña
- Brain and Pain (BaP) Lab, Department of Clinical Psychology and Psychobiology, University of Santiago de Compostela (USC), Santiago de Compostela, Spain
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Antonopoulos SR, Garten DA, Durham PL. Dietary supplementation with grape seed extract from Vitus vinifera prevents suppression of GABAergic protein expression in female Sprague Dawley trigeminal ganglion in a model of chronic temporomandibular joint disorder. Arch Oral Biol 2024; 165:106014. [PMID: 38833771 DOI: 10.1016/j.archoralbio.2024.106014] [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: 10/31/2023] [Revised: 05/18/2024] [Accepted: 05/25/2024] [Indexed: 06/06/2024]
Abstract
OBJECTIVE To investigate cellular changes in protein expression in the trigeminal ganglion in an established preclinical chronic model of temporomandibular joint disorder (TMD) in response to grape seed extract (GSE) supplementation based on its beneficial use in preclinical chronic orofacial pain models. DESIGN Three experimental conditions included female Sprague-Dawley rats as naïve controls, and animals subjected to neck muscle inflammation and prolonged jaw opening with and without daily supplementation of GSE in the drinking water prior to inflammation. Changes were evaluated in mechanical sensitivity to von Frey filaments and protein expression in the trigeminal ganglion of animals 14 days post jaw opening. RESULTS Calcitonin-gene related peptide and protein kinase A, proteins positively associated with peripheral sensitization and enhanced nociception, did not show elevated expression at day 14 in the model compared to naïve or GSE supplemented animals. However, neuronal levels of glutamate decarboxylase (GAD) 65/67, which are enzymes responsible for the synthesis of the inhibitory neurotransmitter GABA that functions to suppress neuronal excitability, were significantly decreased on day 14 post jaw opening. Similarly, a significant decrease in neuronal expression of the GABA receptor subunits GABAB1 and GABAB2, but not GABAA, was observed in the TMD model. Importantly, GSE prevented suppression of GAD 65/67 and GABAB subunits, maintaining levels similar to naïve animals. CONCLUSION Results from our study provide evidence of the downregulation of inhibitory GABAergic proteins in trigeminal ganglion neurons in a preclinical chronic TMD model and the benefits of GSE supplementation in preventing their suppression and maintaining normal levels.
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Affiliation(s)
- Sophia R Antonopoulos
- Missouri State University, Jordan Valley Innovation Center, Department of Biology, Springfield, MO 65806, USA
| | - Daniel A Garten
- Missouri State University, Jordan Valley Innovation Center, Department of Biology, Springfield, MO 65806, USA
| | - Paul L Durham
- Missouri State University, Jordan Valley Innovation Center, Department of Biology, Springfield, MO 65806, USA.
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Kell PA, Vore CN, Hahn BJ, Payne MF, Rhudy JL. Optimizing Temporal Summation of Heat Pain Using a Constant Contact Heat Stimulator. J Pain Res 2024; 17:583-598. [PMID: 38347852 PMCID: PMC10860393 DOI: 10.2147/jpr.s439862] [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: 09/12/2023] [Accepted: 01/30/2024] [Indexed: 02/15/2024] Open
Abstract
Purpose Temporal summation (TS) of pain occurs when pain increases over repeated presentations of identical noxious stimuli. TS paradigms can model central sensitization, a state of hyperexcitability in nociceptive pathways that promotes chronic pain onset and maintenance. Many experimenters use painful heat stimuli to measure TS (TS-heat); yet, TS-heat research faces unresolved challenges, including difficulty evoking summation in up to 30-50% of participants. Moreover, substantial variability exists between laboratories regarding the methods for evoking and calculating TS-heat. Patients and Methods To address these limitations, this study sought to identify optimal parameters for evoking TS-heat in healthy participants with a commercially available constant contact heat stimulator, the Medoc TSA-II. Working within constraints of the TSA-II, stimulus trains with varying parameters (eg, stimulus frequency, baseline temp, peak temp, peak duration, testing site) were tested in a sample of 32 healthy, chronic pain-free participants to determine which combination best evoked TS-heat. To determine whether TS scoring method altered results, TS-heat was scored using three common methods. Results Across all methods, only two trains successfully evoked group-level TS-heat. These trains shared the following parameters: site (palmar hand), baseline and peak temperatures (44°C and 50°C, respectively), and peak duration (0.5 s). Both produced summation that peaked at moderate pain (~50 out of 100 rating). Conclusion Future TS-heat investigations using constant contact thermodes and fixed protocols may benefit from adopting stimulus parameters that include testing on the palmar hand, using 44°C baseline and 50°C peak temperatures, at ≥0.33 Hz stimulus frequency, and peak pulse durations of at least 0.5 seconds.
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Affiliation(s)
- Parker A Kell
- Department of Psychology, The University of Tulsa, Tulsa, OK, USA
| | - Claudia N Vore
- Department of Psychology, The University of Tulsa, Tulsa, OK, USA
| | - Burkhart J Hahn
- Department of Psychology, The University of Tulsa, Tulsa, OK, USA
- Department of Psychology, Oklahoma State University, Stillwater, OK, USA
| | - Michael F Payne
- Department of Psychology, The University of Tulsa, Tulsa, OK, USA
- Department of Pediatrics, Division of Child & Adolescent Psychiatry, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
| | - Jamie L Rhudy
- Department of Psychology, The University of Tulsa, Tulsa, OK, USA
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Baggen JHM, Koevoets AC, Koutris M, Steegers MAH, Lobbezoo F. Chronic temporomandibular disorder pain patients with a history of neuropathic pain treatment: a narrative research on their diagnosis and treatment history. BMC Oral Health 2024; 24:22. [PMID: 38178030 PMCID: PMC10768420 DOI: 10.1186/s12903-023-03796-0] [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: 07/27/2023] [Accepted: 12/18/2023] [Indexed: 01/06/2024] Open
Abstract
The aims of this qualitative research were (1) to gain more insight in the diagnostic and treatment history of patients with chronic temporomandibular disorder (TMD) pain; (2) to get a deeper understanding of possible factors that are involved in the possible delay in setting a TMD-pain diagnosis and receiving appropriate treatment; and (3) to get a deeper understanding of the perspectives and experiences of chronic TMD-pain patients on the possible improvement of various aspects of their diagnostic and treatment journey.MethodsIn this narrative research, semi-structured interviews took place with patients who experienced chronic orofacial pain (OFP) for at least three years before getting diagnosed with, and treated for, TMD pain by an OFP specialist in an interprofessional setting.ResultsIn total, ten patients were interviewed in-depth. Patients experienced their chronic OFP in different ways, but all reported a significant impact of their pain on their quality of life. All patients visited numerous health care professionals before their TMD diagnosis was set. Among others, they underwent anti-neuropathic pain medication therapies and invasive surgeries, which did not significantly reduce their chronic OFP. The interprofessional TMD-pain treatment reduced the suffering of the chronic OFP substantially, also 6 months after the start of therapy, and improved the quality of life for all patients. In most of them, the OFP intensity was also decreased.ConclusionChronic TMD-pain patients with a history of neuropathic pain treatment may experience a long journey until receiving the appropriate diagnosis and treatment. This stresses the need to improve the implementation of chronic TMD-pain guidelines.
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Affiliation(s)
- Jeanne H M Baggen
- Department of Orofacial Pain & Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Gustav Mahlerlaan, 3004, 1081 LA, Amsterdam, The Netherlands.
| | - Anna C Koevoets
- Department of Orofacial Pain & Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Gustav Mahlerlaan, 3004, 1081 LA, Amsterdam, The Netherlands
| | - Michail Koutris
- Department of Orofacial Pain & Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Gustav Mahlerlaan, 3004, 1081 LA, Amsterdam, The Netherlands
| | - Monique A H Steegers
- Amsterdam UMC, Vrije Universiteit Amsterdam, Anesthesiology, Amsterdam, De Boelelaan 1117, Amsterdam, Netherlands
| | - Frank Lobbezoo
- Department of Orofacial Pain & Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Gustav Mahlerlaan, 3004, 1081 LA, Amsterdam, The Netherlands
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Cioffi I. Biological and psychological factors affecting the sensory and jaw motor responses to orthodontic tooth movement. Orthod Craniofac Res 2023; 26 Suppl 1:55-63. [PMID: 37395347 DOI: 10.1111/ocr.12688] [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: 01/28/2023] [Revised: 06/03/2023] [Accepted: 06/17/2023] [Indexed: 07/04/2023]
Abstract
Orthodontic tooth movement (OTM) is associated with an inflammatory response, tooth pain (i.e. orthodontic pain) and changes in dental occlusion. Clinical realms and research evidence suggest that the sensory and jaw motor responses to OTM vary significantly among individuals. While some adjust well to orthodontic procedures, others may not and can experience significant pain or not adjust to occlusal changes. This is of concern, as clinicians cannot anticipate an individual's sensorimotor response to OTM. Converging evidence shows that some psychological states and traits significantly affect the sensorimotor response to OTM and may considerably affect an individual's adaptation to orthodontic or other dental procedures. We performed a topical review to synthesize the available knowledge about the behavioural mechanisms regulating the sensorimotor response to OTM, with the intent of informing orthodontic practitioners and researchers about specific psychological states and traits that should be considered while planning orthodontic treatment. We report on studies focusing on the role of anxiety, pain catastrophising, and somatosensory amplification (i.e. bodily hypervigilance), on sensory and jaw motor responses. Psychological states and traits can significantly affect sensory and jaw motor responses and a patient's adaptation to orthodontic procedures, although large interindividual variability exists. Clinicians can use validated instruments (checklists or questionnaires) to collect information about patients' psychological traits, which can assist in identifying those individuals who may not adjust well to orthodontic procedures. The information included in this manuscript also assists researchers investigating the effect of orthodontic procedures and or/appliances on orthodontic pain.
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Affiliation(s)
- I Cioffi
- Faculty of Dentistry, Centre for Multimodal Sensorimotor and Pain Research, University of Toronto, Toronto, Ontario, Canada
- Discipline of Orthodontics, Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
- University of Toronto Centre for the Study of Pain, Toronto, Ontario, Canada
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DuPont CM, Olmstead R, Reid MJ, Hamilton KR, Campbell CM, Finan PH, Sadeghi N, Castillo D, Irwin MR, Smith MT. A randomized, placebo-controlled, double-blinded mechanistic clinical trial using endotoxin to evaluate the relationship between insomnia, inflammation, and affective disturbance on pain in older adults: A protocol for the sleep and Healthy Aging Research for pain (SHARE-P) study. Brain Behav Immun Health 2023; 30:100642. [PMID: 37256193 PMCID: PMC10225887 DOI: 10.1016/j.bbih.2023.100642] [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: 05/16/2023] [Accepted: 05/18/2023] [Indexed: 06/01/2023] Open
Abstract
Chronic pain is prevalent in older adults. Treatment, especially with opioids, is often ineffective and poses considerable negative consequences in this population. To improve treatment, it is important to understand why older adults are at a heightened risk for developing chronic pain. Insomnia is a major modifiable risk factor for chronic pain that is ubiquitous among older adults. Insomnia can also lead to heightened systemic inflammation and affective disturbance, both of which may further exacerbate pain conditions in older adults. Endotoxin exposure can be used as an experimental model of systemic inflammation and affective disturbance. The current study aims to understand how insomnia status and endotoxin-induced changes in inflammation and affect (increased negative affect and decreased positive affect) may interact to impact pain facilitatory and inhibitory processes in older adults. Longitudinal data will also assess how pain processing, affective, and inflammatory responses to endotoxin may predict the development of pain and/or depressive symptoms. The current study is a randomized, double-blinded, placebo-controlled, mechanistic clinical trial in men and women, with and without insomnia, aged 50 years and older. Participants were randomized to either 0.8ng/kg endotoxin injection or saline placebo injection. Daily diaries were used to collect variables related to sleep, mood, and pain at two-week intervals during baseline and 3-, 6-, 9-, and 12-months post-injection. Primary outcomes during the experimental phase include conditioned pain modulation, temporal summation, and affective pain modulation ∼5.5 hours after injection. Primary outcomes for longitudinal assessments are self-reported pain intensity and depressive symptoms. The current study uses endotoxin as an experimental model for pain. In doing so, it aims to extend the current literature by: (1) including older adults, (2) investigating insomnia as a potential risk factor for chronic pain, (3) evaluating the role of endotoxin-induced affective disturbances on pain sensitivity, and (4) assessing sex differences in endotoxin-induced hyperalgesia. Clinicaltrialsgov NCT03256760. Trial sponsor NIH R01AG057750-01.
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Affiliation(s)
- Caitlin M. DuPont
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
| | - Richard Olmstead
- Department of Psychiatry and Biobehavioral Sciences, Cousins Center for Psychoneuroimmunology, Semel Institute for Neuroscience and Human Behavior, David Geffen School of Medicine, University of California Los Angeles (UCLA), Los Angeles, CA, USA
| | - Matthew J. Reid
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
| | - Katrina R. Hamilton
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
| | - Claudia M. Campbell
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
| | - Patrick H. Finan
- University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Nina Sadeghi
- Department of Psychiatry and Biobehavioral Sciences, Cousins Center for Psychoneuroimmunology, Semel Institute for Neuroscience and Human Behavior, David Geffen School of Medicine, University of California Los Angeles (UCLA), Los Angeles, CA, USA
| | - Daisy Castillo
- Department of Psychiatry and Biobehavioral Sciences, Cousins Center for Psychoneuroimmunology, Semel Institute for Neuroscience and Human Behavior, David Geffen School of Medicine, University of California Los Angeles (UCLA), Los Angeles, CA, USA
| | - Michael R. Irwin
- Department of Psychiatry and Biobehavioral Sciences, Cousins Center for Psychoneuroimmunology, Semel Institute for Neuroscience and Human Behavior, David Geffen School of Medicine, University of California Los Angeles (UCLA), Los Angeles, CA, USA
| | - Michael T. Smith
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
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Shaffer SM, Naze GS. Evaluation and management of temporomandibular disorders. Part 1: an orthopedic physical therapy update on examination and clinical reasoning. J Man Manip Ther 2023; 31:133-142. [PMID: 36245265 PMCID: PMC10288910 DOI: 10.1080/10669817.2022.2123171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Abstract
Temporomandibular (TM) disorders afflict many people globally and, despite the presence of existing peer-reviewed material that assists conservative orthopedic providers, recent advances in knowledge indicate that updated resources are required for students, clinicians, and educators. This two-part series builds off previously published material to present newer supplementary information that can be useful during the evaluation and management processes. Content in Part 1 of this series includes a discussion about the factors that have been shown to contribute to TM disorders, an updated perspective of relevant pain science, a discussion of self-report outcome measures, and various different topics related to the examination of patients with TM disorders. Part 2 addresses information related to the temporomandibular joint disc, joint hypermobility, oral splints, and clinical reasoning. In combination with other available publications, this two-part series provides clinicians an opportunity to improve their delivery of effective and efficient clinical services for people diagnosed with TM disorders.
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Affiliation(s)
- Stephen M. Shaffer
- College of Education, Nursing, and Health Professions, Department of Rehabilitation Sciences, University of Hartford, West Hartford, CT, USA
| | - Garrett S. Naze
- Congdon School of Health Sciences, Department of Physical Therapy, High Point University, High Point, NC, USA
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Gremeau-Richard C, Pionchon P, Mulliez A, Dualé C, Dallel R. Enhanced pain facilitation rather than impaired pain inhibition in burning mouth syndrome female patients. J Headache Pain 2022; 23:143. [PMCID: PMC9673300 DOI: 10.1186/s10194-022-01516-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 10/24/2022] [Indexed: 11/19/2022] Open
Abstract
Background Deficient endogenous pain modulation has been implicated in the development and exacerbation of chronic orofacial pain. To date, relatively little is known regarding the function of the endogenous pain modulation in patients with burning mouth syndrome (BMS). This case–control study investigated endogenous pain modulation in women with BMS. Methods Conditioned pain modulation (CPM) was assessed upon temporal summation (TSP) of thermal pain. Forty female subjects, 20 BMS patients and 20 age-matched control subjects, were included in a 2 session-protocol. Mechanical and thermal pain thresholds were measured on the forearm and hand. TSP was obtained using repetitive laser-evoked thermal stimuli applied on the non-dominant hand, at an intensity yielding to moderate pain. During TSP, CPM was produced by immersing the contralateral foot in a water bath at painful cold (8 °C) temperature. In control conditions, the foot was immersed in a water bath at not painful (30 °C) temperature. Results BMS was not associated with any impairment in thermal as well as mechanical extracephalic pain thresholds. TSP and CPM efficacy were similar in BMS patients and control subjects. However, BMS patients exhibited enhanced extracephalic heat hyperalgesia. Conclusion This study reveals that there is no impairment of endogenous pain inhibition mechanisms in BMS patients, but rather an increase in pain facilitation.
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Affiliation(s)
- Christelle Gremeau-Richard
- grid.411163.00000 0004 0639 4151Université Clermont Auvergne, CHU Clermont-Ferrand, Inserm, Neuro-Dol, Faculté de Chirurgie Dentaire, 2 Rue de Braga, 63100 Clermont-Ferrand, France
| | - Paul Pionchon
- grid.411163.00000 0004 0639 4151Université Clermont Auvergne, CHU Clermont-Ferrand, Inserm, Neuro-Dol, Faculté de Chirurgie Dentaire, 2 Rue de Braga, 63100 Clermont-Ferrand, France
| | - Aurélien Mulliez
- grid.411163.00000 0004 0639 4151Université Clermont Auvergne, CHU Clermont-Ferrand, Inserm, Neuro-Dol, Faculté de Chirurgie Dentaire, 2 Rue de Braga, 63100 Clermont-Ferrand, France
| | - Christian Dualé
- grid.411163.00000 0004 0639 4151Université Clermont Auvergne, CHU Clermont-Ferrand, Inserm, Neuro-Dol, Faculté de Chirurgie Dentaire, 2 Rue de Braga, 63100 Clermont-Ferrand, France
| | - Radhouane Dallel
- grid.411163.00000 0004 0639 4151Université Clermont Auvergne, CHU Clermont-Ferrand, Inserm, Neuro-Dol, Faculté de Chirurgie Dentaire, 2 Rue de Braga, 63100 Clermont-Ferrand, France ,grid.494717.80000000115480420Present Address: Faculté de Chirurgie Dentaire, 2 Rue de Braga, 63100 Clermont-Ferrand, France
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Santiago V, Janal MN, Cook DB, Raphael KG. Temporal Summation and Aftersensations of Second Pain in Women with Myofascial Temporomandibular Disorder Differ by Presence of Temporomandibular Joint Pain. J Pain Res 2022; 15:3275-3286. [PMID: 36284523 PMCID: PMC9588293 DOI: 10.2147/jpr.s381640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 10/08/2022] [Indexed: 11/08/2022] Open
Abstract
Purpose Mechanisms underlying myofascial temporomandibular disorder (mTMD) are poorly understood. One theory is dysfunction in the central mediation of pain, specifically in enhanced facilitatory pain modulation. Because mechanisms leading to central sensitization may differ for joint and muscle pain, this study of mTMD addressed phenotypic heterogeneity by temporomandibular (TM) joint pain in the examination of quantitative sensory testing (QST). Patients and Methods The stimulus dependent increase in second pain (temporal summation (TS)) and associated aftersensations (AS) were examined across groups of women with mTMD with TM joint pain and without, and a demographically matched control group. Results TS was slightly more evident in mTMD without joint pain vs with (p = 0.035), but AS were most robustly persistent in the group with joint pain vs without (p < 0.002). Conclusion While both subgroups demonstrated evidence of central sensitization relative to controls on one of two measures, differences in QST results, if replicated, may point to possible differences in the mechanisms that yield central sensitization. Alternatively, it may represent methodological artifacts that need to be addressed. Therefore, greater consideration should be given to symptom-based phenotypes in studies examining TS and AS.
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Affiliation(s)
- Vivian Santiago
- Department of Oral & Maxillofacial Pathology, Radiology & Medicine, New York University College of Dentistry, New York, NY, USA,Correspondence: Vivian Santiago, Department of Oral & Maxillofacial Pathology, Radiology & Medicine, New York University College of Dentistry, 137th East 25th Street, Rm 731, New York, NY, 10010, USA, Tel +1 212 998-9419, Email
| | - Malvin N Janal
- Department of Epidemiology and Health Promotion, New York University College of Dentistry, New York, NY, USA
| | - Dane B Cook
- Research Service, William S. Middleton Memorial Veterans Hospital, Madison, WI, USA,Department of Kinesiology, University of Wisconsin-Madison School of Education, Madison, WI, USA
| | - Karen G Raphael
- Department of Oral & Maxillofacial Pathology, Radiology & Medicine, New York University College of Dentistry, New York, NY, USA
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Chen H, Comnick C, Norman GJ, Caplan DJ, Jin XX, Fillingim RB. Triad Multisystem Phenotype with High-risk for Developing Temporomandibular Disorders- Characteristics and Potential Pathophysiology Results from the OPPERA Dataset. Pain 2022; 164:1027-1038. [PMID: 36661844 DOI: 10.1097/j.pain.0000000000002797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 09/20/2022] [Indexed: 01/21/2023]
Abstract
ABSTRACT A multisystem phenotype with the Triad of bodily pain, psychological distress, and sleep disturbance was found to have high risk for developing initial onset of painful temporomandibular disorders (TMDs) in the multicenter Orofacial Pain: Prospective Evaluation and Risk Assessment (OPPERA) dataset. In this study, we systemically examined phenotypic characteristics and explored potential pathophysiology in quantitative sensory testing (QST) and autonomic nervous system (ANS) domains in this multisystem Triad phenotype. Secondary analysis was performed on 1199 non-Triad and 154 Triad TMD-free OPPERA enrollees at baseline. Results indicate that prior to developing TMDs, the Triad phenotype demonstrated both orofacial and systemic signs and symptoms that can only be captured through multisystem assessment. In addition, we found significantly lower resting heart rate variability and higher resting heart rate in the Triad phenotype as compared to the non-Triad group. However, pain sensitivity measured by QST was not different between groups. These findings highlight the importance of whole-person multisystem assessment at the stage prior to developing complex pain conditions such as TMDs, and suggest that, in addition to a "tissue damage monitor", pain should be considered in a broader context, such as a component within a "distress monitoring system" at the whole-person level when multisystem issues co-present. Therefore, the presence or absence of multisystem issues may carry critical information when searching for disease mechanisms and developing mechanism-based intervention and prevention strategies for TMDs and related pain conditions. Cardiovascular autonomic function should be further researched when multisystem issues co-present prior to developing TMDs.
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Affiliation(s)
- Hong Chen
- the University of Iowa College of Dentistry, Department of Preventive and Community Dentistry
| | - Carissa Comnick
- University of Iowa College of Dentistry, Division of Biostatistics & Computational Biology and University of Iowa College of Public Health, Department of Biostatistics
| | | | - Daniel J Caplan
- the University of Iowa College of Dentistry, Department of Preventive and Community Dentistry
| | - Xie Xian Jin
- University of Iowa College of Dentistry, Division of Biostatistics & Computational Biology and University of Iowa College of Public Health, Department of Biostatistics
| | - Roger B Fillingim
- University of Florida College of Dentistry, Department of Community Dentistry and Behavioral Science
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Ferrillo M, Gallo V, Lippi L, Bruni A, Montrella R, Curci C, Calafiore D, Invernizzi M, Migliario M, de Sire A. The 50 most-cited articles on temporomandibular disorders: A bibliometric analysis. J Back Musculoskelet Rehabil 2022; 36:279-297. [PMID: 36189581 DOI: 10.3233/bmr-220152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Temporomandibular disorders (TMD) are musculoskeletal conditions involving masticatory muscles and temporomandibular joints. Bibliometric analysis has been introduced as a new method for collecting and analyzing information on scientific articles. OBJECTIVE The aim of this study was to identify the 50 most cited articles on TMD, performing a bibliometric analysis of the identified papers to favor research and clinical practice. METHODS On December 17, 2021 a systematic research was performed to find all papers on TMD published in the literature. The Incites Journal Citation Reports dataset and Scopus database was used to obtain bibliometric indexes of the authors and metrics data of the journals, including Impact Factor, Eigenfactor Score, and Normalized Eigenfactor. VOSviewer was used to visualize the keyword mapping networking, with the nodes standing for keywords and the edges for keyword relationships. RESULTS Out of 24372 papers obtained by the search strategy, the 50 most cited articles on TMD were analyzed. The paper with the highest number of citations (n= 3020) was on TMD research diagnostic criteria. Rate of citations per year collected by the 50 most cited articles on TMD has been increasing over time (from 627 in 2006 to 1483 in 2021). Most of them were cross-sectional studies (n= 20; 40.0%) and narrative reviews (n= 14; 28.0%). CONCLUSION This bibliometric study showed an increasing number of citations for articles on TMD, testifying a high interest in the last years. Starting from this analysis, future studies might provide high-quality evidence on TMD management.
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Affiliation(s)
- Martina Ferrillo
- Dentistry Unit, Department of Health Sciences, University of Catanzaro "Magna Graecia", Catanzaro, Italy.,Dentistry Unit, Department of Health Sciences, University of Catanzaro "Magna Graecia", Catanzaro, Italy
| | - Vittorio Gallo
- CIR Dental School, Department of Surgical Sciences, University of Turin, Turin, Italy.,Dentistry Unit, Department of Health Sciences, University of Catanzaro "Magna Graecia", Catanzaro, Italy
| | - Lorenzo Lippi
- Department of Health Sciences, University of Eastern Piedmont "A. Avogadro", Novara, Italy.,Translational Medicine, Dipartimento Attività Integrate Ricerca e Innovazione (DAIRI), Azienda Ospedaliera SS. Antonio e Biagio e Cesare Arrigo, Alessandria, Italy
| | - Alessandro Bruni
- CIR Dental School, Department of Surgical Sciences, University of Turin, Turin, Italy
| | - Roberta Montrella
- CIR Dental School, Department of Surgical Sciences, University of Turin, Turin, Italy
| | - Claudio Curci
- Physical and Rehabilitative Medicine Unit, Department of Neurosciences, ASST Carlo Poma, Mantova, Italy
| | - Dario Calafiore
- Physical and Rehabilitative Medicine Unit, Department of Neurosciences, ASST Carlo Poma, Mantova, Italy
| | - Marco Invernizzi
- Department of Health Sciences, University of Eastern Piedmont "A. Avogadro", Novara, Italy.,Translational Medicine, Dipartimento Attività Integrate Ricerca e Innovazione (DAIRI), Azienda Ospedaliera SS. Antonio e Biagio e Cesare Arrigo, Alessandria, Italy
| | - Mario Migliario
- Dental Clinic, Department of Translational Medicine, University of Eastern Piedmont "A. Avogadro", Novara, Italy
| | - Alessandro de Sire
- Physical and Rehabilitative Medicine Unit, Department of Medical and Surgical Sciences, University of Catanzaro "Magna Graecia", Catanzaro, Italy
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12
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Daisuke M, Shoichi I, Xiaoyu L, Kotaro K, Yukiko K, Ryota T, Peter S, Hirofumi Y. Clinical identification of the stimulus intensity to measure temporal summation of second pain. Sci Rep 2022; 12:12915. [PMID: 35902714 PMCID: PMC9334644 DOI: 10.1038/s41598-022-17171-6] [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: 02/16/2022] [Accepted: 07/21/2022] [Indexed: 11/23/2022] Open
Abstract
Temporal summation of second pain (TSSP) has been suggested as a psychophysical index for central sensitization, one of the critical mechanisms in the chronification of pain. However, there is no gold standard for protocols to measure TSSP. The purpose was to establish the stimulus intensity for measuring TSSP. Female patients with chronic myofascial temporomandibular disorders pain (n = 16) and healthy female volunteers with no pain (n = 15) participated. Pain thresholds (PT °C) were measured, and repetitive heat stimuli at three stimulus intensities (PT °C, PT + 1 °C, PT + 2 °C) were applied. TSSP parameters were quantified as TSSP magnitude (TSm) and TSSP frequency (TSf). In healthy female volunteers, pain ratings significantly decreased at PT °C (p < 0.050), besides TSm and TSf at PT + 2 °C were significantly higher than those at PT °C (p < 0.025). In chronic pain patients, pain ratings significantly increased at PT + 1 °C and PT + 2 °C (p < 0.050). At PT + 2 °C, TSm and TSf in chronic pain patients were significantly higher than those in healthy volunteers (p < 0.050). It could be helpful to measure TSSP with the stimulus intensity adjusted individually to the patient’s pain thresholds + 2 °C for assessing central sensitization.
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Affiliation(s)
- Moriguchi Daisuke
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, 1-8, Yamadaoka, Suita, Osaka, 565-0871, Japan.
| | - Ishigaki Shoichi
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, 1-8, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Lin Xiaoyu
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, 1-8, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Kuyama Kotaro
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, 1-8, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Koishi Yukiko
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, 1-8, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Takaoka Ryota
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, 1-8, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Svensson Peter
- Department of Dentistry and Oral Health, Section for Orofacial Pain and Jaw Function, Aarhus University, Aarhus, Denmark.,Faculty of Odontology, Malmo University, Malmo, Sweden
| | - Yatani Hirofumi
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, 1-8, Yamadaoka, Suita, Osaka, 565-0871, Japan
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13
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Budd AS, Huynh TKT, Seres P, Beaulieu C, Armijo-Olivo S, Cummine J. White Matter Diffusion Properties in Chronic Temporomandibular Disorders: An Exploratory Analysis. FRONTIERS IN PAIN RESEARCH 2022; 3:880831. [PMID: 35800990 PMCID: PMC9254396 DOI: 10.3389/fpain.2022.880831] [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: 02/21/2022] [Accepted: 05/16/2022] [Indexed: 11/22/2022] Open
Abstract
Objective To determine differences in diffusion metrics in key white matter (WM) tracts between women with chronic temporomandibular disorders (TMDs) and age- and sex-matched healthy controls. Design Cross sectional study compared diffusion metrics between groups and explored their associations with clinical variables in subjects with TMDs. Methods In a total of 33 subjects with TMDs and 33 healthy controls, we performed tractography to obtain diffusion metrics (fractional anisotropy [FA], mean diffusivity [MD], radial diffusivity [RD], and axial diffusivity [AD]) from the cingulum near the cingulate gyrus (CGC), the cingulum near the hippocampus (CGH), the fornix, the anterior limb of the internal capsule (ALIC), the posterior limb of the internal capsule (PLIC), and the uncinate fasciculus (UF). We compared diffusion metrics across groups and explored the relationships between diffusion metrics and clinical measures (pain chronicity and intensity, central sensitization, somatization, depression, orofacial behavior severity, jaw function limitations, disability, and interference due to pain) in subjects with TMDs. Results We observed differences in diffusion metrics between groups, primarily in the right side of the brain, with the right CGC having lower FA and the right UF having lower FA and higher MD and RD in subjects with TMDs compared to healthy controls. No clinical measures were consistently associated with diffusion metrics in subjects with TMDs. Conclusion The UF showed potential microstructural damage in subjects with TMDs, but further studies are needed to confirm any associations between diffusion changes and clinical measures.
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Affiliation(s)
- Alexandra S. Budd
- Neuroscience and Mental Health Institute, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Thi K. T. Huynh
- Faculty of Science, University of Alberta, Edmonton, AB, Canada
| | - Peter Seres
- Department of Biomedical Engineering, University of Alberta, Edmonton, AB, Canada
| | - Christian Beaulieu
- Department of Biomedical Engineering, University of Alberta, Edmonton, AB, Canada
| | - Susan Armijo-Olivo
- Department of Physical Therapy, Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, AB, Canada
- Faculty of Business and Social Sciences, University of Applied Sciences Osnabrück, Osnabrück, Germany
- Department of Dentistry, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
- *Correspondence: Susan Armijo-Olivo
| | - Jacqueline Cummine
- Neuroscience and Mental Health Institute, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
- Department of Communication Sciences and Disorders, Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, AB, Canada
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14
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White KM, LaRowe LR, Powers JM, Paladino MB, Maisto SA, Zvolensky MJ, Glatt SJ, Ditre JW. Family History of Alcohol Use Disorder as a Predictor of Endogenous Pain Modulation Among Moderate to Heavy Drinkers. THE JOURNAL OF PAIN 2022; 23:864-875. [PMID: 34974175 PMCID: PMC9086107 DOI: 10.1016/j.jpain.2021.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 11/01/2021] [Accepted: 12/13/2021] [Indexed: 05/03/2023]
Abstract
Family history of alcohol use disorder (AUD) is frequently endorsed by persons with chronic pain. Although individuals with a family history of AUD have demonstrated enhanced sensitivity to painful stimulation, previous research has not examined endogenous pain modulation in this population. The goal of this study was to test family history of AUD as a predictor of conditioned pain modulation, offset analgesia, and temporal summation among a sample of moderate and heavy drinkers. Adults with no current pain (N = 235; 58.3% male; Mage = 34.3; 91.9% non-Hispanic; 60% white) were evaluated for family history of AUD at baseline and pain modulatory outcomes were assessed via quantitative sensory testing. Participants with a family history of AUD (relative to those without) evinced a pro-nociceptive pain modulation profile in response to experimental pain. Specifically, family history of AUD was associated with deficits in pain-inhibitory processes. Approximately 4% of the variance in endogenous pain modulation was accounted for by family history, and exploratory analyses suggested these effects may be driven by paternal AUD. PERSPECTIVE: The current findings suggest individuals with a family history of AUD demonstrate pain modulatory function that may predispose them to the development of chronic pain. Clinically, these data may inform pain management approaches for individuals with a family history of AUD.
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Affiliation(s)
- Kyle M White
- Department of Psychology, Syracuse University, Syracuse, New York
| | - Lisa R LaRowe
- Department of Behavioral and Social Sciences, School of Public Health, Brown University, Providence, Rhode Island
| | - Jessica M Powers
- Department of Psychology, Syracuse University, Syracuse, New York
| | | | - Stephen A Maisto
- Department of Psychology, Syracuse University, Syracuse, New York
| | - Michael J Zvolensky
- Department of Psychology, University of Houston, Houston, Texas.; Department of Behavioral Science, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Stephen J Glatt
- Department of Psychiatry and Behavioral Sciences, The State University of New York (SUNY) Upstate Medical University, Syracuse, New York
| | - Joseph W Ditre
- Department of Psychology, Syracuse University, Syracuse, New York..
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15
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Cayrol T, Meeus M, Aron V, Gatto C, Mouraux A, Roussel N, Sallaz L, van den Broeke E, Pitance L. Evidence for alterations to dynamic quantitative sensory tests in patients with chronic temporomandibular myalgia: a systematic review of observational studies with meta-analysis. J Oral Rehabil 2022; 49:654-670. [PMID: 35342987 DOI: 10.1111/joor.13320] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 03/02/2022] [Accepted: 03/21/2022] [Indexed: 12/01/2022]
Abstract
BACKGROUND Conflicting results exist between somatosensory profiles of patients with temporomandibular myalgia (TMDm). The objective of this review was to examine whether adults with TMDm show altered responses to dynamic quantitative sensory tests compared with healthy controls. METHODS We searched five electronic databases for studies, excluding those without suitable controls or where TMDm was associated with confounding non-musculoskeletal disorders. Risk of bias was assessed with the SIGN case-control study checklist. Findings were structured around dynamic quantitative sensory tests and their localization. Where possible, we performed meta-analysis with a random inverse variance model to compare patients with TMDm and healthy controls. Statistical heterogeneity was estimated with Chi² test and inconsistency index, I². RESULTS We extracted data from 23 studies comprising 1284 adults with chronic TMDm and 2791 healthy controls. Risk of bias was assessed as high for 20 studies. Mechanical temporal summation, the most studied phenomenon (14 studies), is increased in the upper limb of patients with TMDm (SMD = .43; 95% CI: .11 to .75; p = .0001) but not in the jaw area (p = .09) or in the cervical area (p = .29). Very little evidence for altered thermal temporal summation (five studies), conditioned pain modulation (seven studies), exercise-induced hypoalgesia (two studies), placebo analgesia (two studies), stress-induced hypoalgesia (one study) and offset analgesia (one study) was found. DISCUSSION A major limitation of this review was the risk of bias of included studies. Future studies would benefit from following methodological guidelines and consideration of confounding factors.
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Affiliation(s)
- Timothée Cayrol
- Institute of Experimental and Clinical Research (IREC), Université Catholique de Louvain, Brussels, Belgium
| | - Mira Meeus
- Department of Rehabilitation Sciences and Physiotherapy, Ghent University, Ghent, Belgium.,Department of Rehabilitation Sciences and Physiotherapy (MOVANT), University of Antwerp, Wilrijk, Belgium.,Pain in Motion, International Research Group, Belgium
| | - Vladimir Aron
- Institute of Experimental and Clinical Research (IREC), Université Catholique de Louvain, Brussels, Belgium
| | - Claire Gatto
- Institute of Experimental and Clinical Research (IREC), Université Catholique de Louvain, Brussels, Belgium
| | - André Mouraux
- Institute of Neuroscience (IoNS), Université Catholique de Louvain, Brussels, Belgium
| | - Nathalie Roussel
- Department of Rehabilitation Sciences and Physiotherapy (MOVANT), University of Antwerp, Wilrijk, Belgium
| | - Léo Sallaz
- Institute of Experimental and Clinical Research (IREC), Université Catholique de Louvain, Brussels, Belgium
| | | | - Laurent Pitance
- Institute of Experimental and Clinical Research (IREC), Université Catholique de Louvain, Brussels, Belgium
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16
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Kim MS, Koh IJ, Sung YG, Park DC, Yoon EJ, In Y. Influence of increased pain sensitivity on patient-reported outcomes following total knee arthroplasty. Knee Surg Sports Traumatol Arthrosc 2022; 30:782-790. [PMID: 33486560 DOI: 10.1007/s00167-021-06455-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Accepted: 01/11/2021] [Indexed: 10/22/2022]
Abstract
PURPOSE The purpose of this study was to discover whether increased pain sensitivity was associated with postoperative pain and patient-reported outcome measures (PROMs) after total knee arthroplasty (TKA). METHODS Pain sensitivity was evaluated preoperatively using a pain sensitivity questionnaire (PSQ). Resting, walking, nighttime, and average pain visual analog scale (VAS) were measured before surgery and 6 weeks, 3 months, 6 months, and 1 year after surgery. PROMs were also evaluated based on the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) score and patient satisfaction. The association between pain VAS average score, WOMAC total score, and PSQ score (minor, moderate, and total score) was assessed at each stage. RESULTS There were 59 patients with a high PSQ score (≥ 5.2) and 53 with a low PSQ score (< 5.2). Up to 1 year postoperatively, the group with high PSQ scores had higher resting, walking, nighttime, and average pain VAS scores than the group with low scores (all p < 0.05). Worse preoperative WOMAC pain, function, and total scores continued until 1 year after surgery in the high-scoring PSQ group (all p < 0.05). The group with low PSQ scores was more satisfied with surgery than the group with high scores (p = 0.027). There was a positive correlation between preoperative PSQ score and pain VAS average score at all time points (all p < 0.05). A relationship between PSQ score and WOMAC total score was also observed (all p < 0.05). CONCLUSION Increased pain sensitivity is a factor related to higher postoperative pain levels and inferior PROMs in patients undergoing primary TKA. LEVEL OF EVIDENCE Case-controlled study, III.
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Affiliation(s)
- Man Soo Kim
- Department of Orthopaedic Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea
| | - In Jun Koh
- Department of Orthopaedic Surgery, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 1021, Tongil Ro, Eunpyeong-gu, Seoul, 03312, Republic of Korea
| | - Yong Gyu Sung
- Department of Orthopaedic Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea
| | - Dong Chul Park
- Department of Orthopaedic Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea
| | - Eun Ji Yoon
- Department of Orthopaedic Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea
| | - Yong In
- Department of Orthopaedic Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea.
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17
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Schuttert I, Timmerman H, Petersen KK, McPhee ME, Arendt-Nielsen L, Reneman MF, Wolff AP. The Definition, Assessment, and Prevalence of (Human Assumed) Central Sensitisation in Patients with Chronic Low Back Pain: A Systematic Review. J Clin Med 2021; 10:5931. [PMID: 34945226 PMCID: PMC8703986 DOI: 10.3390/jcm10245931] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 11/29/2021] [Accepted: 12/15/2021] [Indexed: 12/15/2022] Open
Abstract
Central sensitisation is assumed to be one of the underlying mechanisms for chronic low back pain. Because central sensitisation is not directly assessable in humans, the term 'human assumed central sensitisation' (HACS) is suggested. The objectives were to investigate what definitions for HACS have been used, to evaluate the methods to assess HACS, to assess the validity of those methods, and to estimate the prevalence of HACS. Database search resulted in 34 included studies. Forty different definition references were used to define HACS. This review uncovered twenty quantitative methods to assess HACS, including four questionnaires and sixteen quantitative sensory testing measures. The prevalence of HACS in patients with chronic low back pain was estimated in three studies. The current systematic review highlights that multiple definitions, assessment methods, and prevalence estimates are stated in the literature regarding HACS in patients with chronic low back pain. Most of the assessment methods of HACS are not validated but have been tested for reliability and repeatability. Given the lack of a gold standard to assess HACS, an initial grading system is proposed to standardize clinical and research assessments of HACS in patients with a chronic low back.
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Affiliation(s)
- Ingrid Schuttert
- Pain Center, Department of Anaesthesiology, University Medical Center Groningen, University of Groningen, 9750 RA Groningen, The Netherlands; (I.S.); (H.T.)
| | - Hans Timmerman
- Pain Center, Department of Anaesthesiology, University Medical Center Groningen, University of Groningen, 9750 RA Groningen, The Netherlands; (I.S.); (H.T.)
| | - Kristian K. Petersen
- Center for Neuroplasticity and Pain, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, DK-9220 Aalborg, Denmark; (K.K.P.); (M.E.M.); (L.A.-N.)
| | - Megan E. McPhee
- Center for Neuroplasticity and Pain, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, DK-9220 Aalborg, Denmark; (K.K.P.); (M.E.M.); (L.A.-N.)
| | - Lars Arendt-Nielsen
- Center for Neuroplasticity and Pain, Department of Health Science and Technology, Faculty of Medicine, Aalborg University, DK-9220 Aalborg, Denmark; (K.K.P.); (M.E.M.); (L.A.-N.)
- Department of Medical Gastroenterology (Mech-Sense), Aalborg University Hospital, DK-9220 Aalborg, Denmark
| | - Michiel F. Reneman
- Department of Rehabilitation Medicine, University Medical Center Groningen, University of Groningen, 9750 RA Groningen, The Netherlands;
| | - André P. Wolff
- Pain Center, Department of Anaesthesiology, University Medical Center Groningen, University of Groningen, 9750 RA Groningen, The Netherlands; (I.S.); (H.T.)
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18
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Velly AM, Botros J, Bolla MM, Khan K, Teixeira Junior OA, Guimarães AS, Gornitsky M. Painful and non-painful comorbidities associated with short- and long-term painful temporomandibular disorders: A cross-sectional study among adolescents from Brazil, Canada, and France. J Oral Rehabil 2021; 49:273-282. [PMID: 34731502 DOI: 10.1111/joor.13280] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 10/19/2021] [Accepted: 10/25/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Temporomandibular disorder (TMD) pain is common among adolescents. The association between painful TMD and other comorbidities has been demonstrated. However, the difference between short-term (<6 months) and long-term (≥ 6 months) painful TMD is not yet clear. OBJECTIVE The aim of this study was to assess the association between comorbidities and short- and long-term painful TMD among adolescents. METHODS In this cross-sectional study, adolescents were recruited from Montreal (Canada), Nice (France), and Arceburgo (Brazil). Self-reported painful TMD, comorbidities, school absence, and analgesic intake were assessed using reliable instruments. Multivariable logistic regression analyses were conducted to assess the study aims. RESULTS The prevalence of short- and long-term painful TMD was estimated at 22.29% and 9.93%, respectively. The number of comorbidities was associated with short- (OR = 1.71, 95%CI = 1.53-1.90) and long-term painful TMD (OR = 1.79, 95%CI = 1.55-2.08) compared to controls. Frequent headaches (ORshort-term = 4.39, 95%CI = 3.23-5.98, ORlong-term = 3.69, 95%CI = 2.45-5.57) and back pain (ORshort-term = 1.46, 95%CI=1.06-2.03, ORlong-term = 1.69, 95%CI = 1.11-2.59) were associated with both painful TMD groups. Frequent neck pain (OR = 2.23, 95%CI = 1.53-3.26) and allergies were only associated with short-term painful TMD (OR = 1.54, 95%CI = 1.13-2.10). Frequent stomach pain was related to long-term (OR = 2.01, 95%CI = 1.35-3.26), and it was the only comorbidity significantly more frequent among the long than short-term TMD (OR = 1.82, 95%CI: 1.14-2.90). These analyses were adjusted by sex, age, and city. CONCLUSION In this multi-center study, both short- and long-term painful TMD are associated with frequent headaches and back pain, whereas frequent neck pain and allergies are related to only short-term, and frequent stomach pain with long-term painful TMD.
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Affiliation(s)
- Ana Miriam Velly
- Dental Department, SMBD - Jewish General Hospital, Montreal, QC, Canada.,Faculty of Dentistry, McGill University, Montreal, QC, Canada.,Lady Davis Institute for Medical Research, Montreal, QC, Canada
| | - Jack Botros
- Dental Department, SMBD - Jewish General Hospital, Montreal, QC, Canada.,Faculty of Dentistry, McGill University, Montreal, QC, Canada
| | - Michèle Muller Bolla
- Centre Hospitalier Universitaire de Nice, Nice, France.,Department of Pediatric Dentistry, Faculty of Dentistry, Côte d'Azur University, France.,Laboratory URB2i, University Paris Descartes, Paris, France
| | - Khurram Khan
- Dental Department, SMBD - Jewish General Hospital, Montreal, QC, Canada.,Faculty of Dentistry, McGill University, Montreal, QC, Canada
| | | | | | - Mervyn Gornitsky
- Dental Department, SMBD - Jewish General Hospital, Montreal, QC, Canada.,Faculty of Dentistry, McGill University, Montreal, QC, Canada.,Lady Davis Institute for Medical Research, Montreal, QC, Canada
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19
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Korczeniewska OA, Kuo F, Huang CY, Nasri-Heir C, Khan J, Benoliel R, Hirschberg C, Eliav E, Diehl SR. Genetic variation in catechol-O-methyltransferase is associated with individual differences in conditioned pain modulation in healthy subjects. J Gene Med 2021; 23:e3374. [PMID: 34156736 PMCID: PMC9926975 DOI: 10.1002/jgm.3374] [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: 05/18/2021] [Revised: 06/10/2021] [Accepted: 06/20/2021] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Genetic variation in the catechol-O-methyltransferase (COMT) gene is associated with sensitivity to both acute experimental pain and chronic pain conditions. Four single nucleotide polymorphisms (SNPs) have traditionally been used to infer three common haplotypes designated as low, average and high pain sensitivity and are reported to affect both COMT enzymatic activity and pain sensitivity. One mechanism that may partly explain individual differences in sensitivity to pain is conditioned pain modulation (CPM). We hypothesized that variation in CPM may have a genetic basis. METHODS We evaluated CPM in 77 healthy pain-free Caucasian subjects by applying repeated mechanical stimuli to the dominant forearm using 26-g von Frey filament as the test stimulus with immersion of the non-dominant hand in hot water as the conditioning stimulus. We assayed COMT SNP genotypes by the TaqMan method using DNA extracted from saliva. RESULTS SNP rs4680 (val158 met) was not associated with individual differences in CPM. However, CPM was associated with COMT low pain sensitivity haplotypes under an additive model (p = 0.004) and the effect was independent of gender. CONCLUSIONS We show that, although four SNPs are used to infer COMT haplotypes, the low pain sensitivity haplotype is determined by SNP rs6269 (located in the 5' regulatory region of COMT), suggesting that inherited variation in gene expression may underlie individual differences in pain modulation. Analysis of 13 global populations revealed that the COMT low pain sensitivity haplotype varies in frequency from 13% to 44% and showed that two SNPs are sufficient to distinguish all COMT haplotypes in most populations.
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Affiliation(s)
- Olga A. Korczeniewska
- Center for Orofacial Pain and Temporomandibular Disorders, Department of Diagnostic Sciences, Rutgers School of Dental Medicine, Newark, NJ, USA
| | - Fengshen Kuo
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Ching-Yu Huang
- School of Computer Science and Technology, Kean University, Union, NJ, USA
| | - Cibele Nasri-Heir
- Center for Orofacial Pain and Temporomandibular Disorders, Department of Diagnostic Sciences, Rutgers School of Dental Medicine, Newark, NJ, USA
| | - Junad Khan
- Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, NY, USA
| | - Rafael Benoliel
- Center for Orofacial Pain and Temporomandibular Disorders, Department of Diagnostic Sciences, Rutgers School of Dental Medicine, Newark, NJ, USA
| | - Craig Hirschberg
- Department of Endodontics, Rutgers School of Dental Medicine, Newark, NJ, USA
| | - Eli Eliav
- Eastman Institute for Oral Health, University of Rochester Medical Center, Rochester, NY, USA
| | - Scott R. Diehl
- Department of Oral Biology, Rutgers School of Dental Medicine, Newark, NJ, USA
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20
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Allison C, Korey L, John Z S. A novel computational technique for the quantification of temporal summation in healthy individuals. Musculoskelet Sci Pract 2021; 54:102400. [PMID: 34022750 DOI: 10.1016/j.msksp.2021.102400] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 04/12/2021] [Accepted: 05/10/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND The pathophysiology of chronic musculoskeletal pain is linked to the neurophysiologic condition known as central sensitization. Developing reliable, sensitive and clinically feasible techniques for quantifying central sensitization is a timely priority for advancing the field of chronic pain diagnosis and management. OBJECTIVE To compare the sensitivity of the Windup Ratio, a commonly employed Quantitative Sensory Testing (QST) technique, to a novel approach, the Sumsquare method, for detecting changes in experimentally induced central sensitization. DESIGN Individual, randomized, controlled experimental study. METHODS A total of 37 subjects assigned to experimental (N = 18) and control (N = 19) groups. Central sensitization was experimentally induced in the C5-C6 spinal segments using topical capsaicin (0.075%); controls received a non-sensitizing placebo (Lubriderm). Windup (temporal summation) was assessed using weighted pinpricks (MRC Systems, Heidelberg, Germany) applied within regions of secondary hyperalgesia surrounding the topical capsaicin. A train of 10 stimuli was applied at baseline, 10, 20 and 30 min post-topical application and participants provided numeric pain ratings after each pinprick application. Sumsquare and Windup Ratio outcomes were calculated using the pain rating data. RESULTS Sumsquare outcome was significantly increased at all time points (10, 20, 30 min) post-sensitization (p < 0.05); in contrast, no differences in Windup Ratio from baseline were observed at any time point post-sensitization (p > 0.05). CONCLUSIONS Sumsquare outcome offers greater sensitivity than Windup Ratio for detecting changes in experimentally induced central sensitization. These findings introduce a novel method for assessing changes in central sensitization in patients presenting with chronic musculoskeletal pain hypersensitivity.
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Affiliation(s)
- Clouse Allison
- Human Health and Nutritional Science, University of Guelph, Guelph, Canada
| | - Loi Korey
- Human Health and Nutritional Science, University of Guelph, Guelph, Canada
| | - Srbely John Z
- Human Health and Nutritional Science, University of Guelph, Guelph, Canada.
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21
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Miki T, Nishigami T, Takebayashi T, Yamauchi T. Association between central sensitivity syndrome and psychological factors in people with presurgical low back pain: A cross-sectional study. J Orthop Sci 2021; 26:337-342. [PMID: 32331990 DOI: 10.1016/j.jos.2020.03.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 03/05/2020] [Accepted: 03/16/2020] [Indexed: 12/20/2022]
Abstract
BACKGROUND Low back pain (LBP) is a major problem; it causes significant burden, incurs considerable economic and human costs, and adversely affects the quality of life (QoL). Central sensitivity syndrome (CSS) is known as a group of overlapping conditions that share a common pathophysiological mechanism of central sensitization. Previous studies have shown that CSS is present in several disorders. However, it has been studied for people with presurgical LBP. The purpose of the study was to investigate the proportion of patients with CSS for presurgical LBP and to analyse the association of CSS with clinical symptoms and psychological factors. METHODS Data of demographics, the central sensitization inventory (CSI), psychological measures, clinical symptoms of 238 patients with presurgical LBP were evaluated. The patients were divided into two groups depending on the CSI scores (≥40 and < 40). The two groups were compared, and the correlation between the CSI scores and other outcomes was analysed. Furthermore, multiple regression analysis was performed to identify factors contributing to the CSI scores. RESULTS 13.0% of participants were CSS. All outcomes were significantly different between the groups and significant associations were found between the CSI scores and all other outcomes. In addition, Pain Catastrophizing Scale (PCS) was most significant associated scale for the CSI scores. CONCLUSION We found that certain patients had CSS with presurgical LBP. The CSI scores were significantly associated with the majority of the factors. The PCS was the factor with the most influence on the CSI scores.
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Affiliation(s)
- Takahiro Miki
- Faculty of Health Sciences, Hokkaido University, Hokkaido, Japan; Department of Rehabilitation, Sapporo Maruyama Orthopedic Hospital, Hokkaido, Japan
| | - Tomohiko Nishigami
- Department of Physical Therapy, Faculty of Health and Welfare, Prefectural University of Hiroshima, Hiroshima, Japan
| | - Tsuneo Takebayashi
- Department of Orthopedic, Sapporo Maruyama Orthopedic Hospital, Hokkaido, Japan
| | - Taro Yamauchi
- Faculty of Health Sciences, Hokkaido University, Hokkaido, Japan.
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22
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Detangling red hair from pain: phenotype-specific contributions from different genetic variants in melanocortin-1 receptor. Pain 2021; 161:938-948. [PMID: 31834199 DOI: 10.1097/j.pain.0000000000001780] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Genetic variation in melanocortin-1 receptor (MC1R) has a known role in red hair. Studies on responses to noxious stimuli in red-haired individuals have also been conducted, with mixed findings. To investigate a possible divergence between variants responsible for red hair and pain sensitivity, we performed a genewide association analysis in the Orofacial Pain: Prospective Evaluation and Risk Assessment cohort. All genotyped (17) MC1R variants were tested for association with heat pain temporal summation and sensitivity. Our analyses showed an association for pain sensitivity with the 5'-UTR, tagged by rs3212361, and 1 missense variant, rs885479 (R163Q), previously shown to be weakly associated with red hair. For both variants, the minor allele was protective. These results were validated in the 500,000-person UK Biobank cohort, where the minor alleles of rs3212361 and rs885479 were associated with a reduced count of persistent pain conditions as well as individual pain conditions. Haplotype association analysis revealed a possible joint effect from the 2 individual variants. The 5'-UTR variant rs3212361 was further identified as an expression quantitative trait locus, associated with reduced transcript levels of MC1R in the brain and in the peripheral tibial nerve. Hair colour association analysis of the loss-of-function 5'-UTR rs3212361 allele identified association with red hair, and red hair colour itself was associated with a reduced count of persistent pain conditions. Together, our results suggest that primarily different mechanisms-affecting expression levels vs protein activity-mediated by different genetic variants in the MC1R locus contribute to red hair and pain.
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Tanaka K, Nishigami T, Mibu A, Imai R, Manfuku M, Tanabe A. Combination of Pain Location and Pain Duration is Associated with Central Sensitization-Related Symptoms in Patients with Musculoskeletal Disorders: A Cross-Sectional Study. Pain Pract 2021; 21:646-652. [PMID: 33710772 DOI: 10.1111/papr.13005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 02/02/2021] [Accepted: 03/02/2021] [Indexed: 12/13/2022]
Abstract
OBJECTIVES Increased evidence indicates that pain location affects central sensitization (CS)-related symptoms. In addition, pain location and pain duration may be intricately related to CS-related symptoms. However, these factors have been investigated separately. This study aimed to investigate the association between CS-related symptoms and pain location and/or pain duration in patients with musculoskeletal disorders. METHODS Six hundred thirty-five participants with musculoskeletal disorders were included in this cross-sectional study. All participants were assessed for pain location, pain duration, central sensitization inventory (CSI), EuroQol-5 dimension, and brief pain inventory. The participants were categorized into 3 groups based on pain location (spinal, limb, and both spinal and limb pain) and into 2 groups based on pain duration (acute and chronic pain). RESULTS The interaction between pain location and pain duration were not significant on CSI score (P > 0.05). The odds ratio for higher CSI score (≥ 40) in patients with both spinal and limb pain vs. those with spinal or limb pain was 2.64 (P < 0.01) and that in patients with chronic pain vs. those with acute pain was 1.31 (P = 0.52). In addition, the prevalence of higher CSI scores in the combination of chronic and "both spinal and limb" pain was high (23.1%, adjusted residual = 4.48). CONCLUSIONS Pain location independently influenced CSI scores, and the combination of both spinal and limb pain and chronic pain indicated high CSI scores. The combination of pain location and pain duration is an important clue that points to CS-related symptoms.
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Affiliation(s)
| | - Tomohiko Nishigami
- Department of Physical Therapy, Faculty of Health and Welfare, Prefectural University of Hiroshima, Mihara, Hiroshima, Japan
| | - Akira Mibu
- Department of Physical Therapy, Konan Women's University, Kobe, Japan
| | - Ryota Imai
- Department of Physical Therapy, Osaka Kawasaki Rehabilitation University, Osaka, Japan
| | | | - Akihito Tanabe
- Department of Rehabilitation, Tanabe Orthopaedics, Osaka, Japan
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Fillingim RB. In memoriam William Maixner: 1952 to 2020. Pain 2021; 162:989-992. [PMID: 37595617 DOI: 10.1097/j.pain.0000000000002200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- Roger B Fillingim
- Department of Community Dentistry and Behavioral Science, Pain Research and Intervention Center of Excellence, University of Florida, Gainesville, FL, United States
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25
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Uddin Z, Woznowski-Vu A, Flegg D, Aternali A, Wideman TH. A Cumulative Impact of Psychological and Sensitization Risk Factors on Pain-Related Outcomes. Pain Pract 2021; 21:523-535. [PMID: 33316140 DOI: 10.1111/papr.12987] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 10/30/2020] [Accepted: 11/30/2020] [Indexed: 12/13/2022]
Abstract
OBJECTIVE Risk constructs based on psychological risk factors (eg, pain catastrophizing, PC) and sensitization risk factors (eg, pressure pain threshold, PPT) are important in research and clinical practice. Most research looks at individual constructs but does not consider how different constructs might interact within the same individual. An evaluation of the cumulative impact of psychological and sensitization risk factors on pain-related outcomes may help guide us in the risk assessment of patients with pain conditions. The aim of this study is to evaluate the cumulative impact of these psychological (PC) and sensitization (PPT) risk factors on pain-related outcomes (activity avoidance, pain severity, and disability) considering covariates. METHODS We included 109 participants (70.60% women; mean ± SD age 53.6 ± 12.3 years) with chronic musculoskeletal pain for data analysis, who completed all measures of this study. Participants completed a single testing session that included measures of risk factors (PC and PPT) and pain-related outcomes (self-reported avoidance, functional avoidance, disability, and pain severity). Subgroups were constructed by dichotomizing of PC and PPT scores, resulting in four groups: (1) low catastrophizing and low sensitivity (N = 26), (2) high catastrophizing and low sensitivity (N = 27), (3) low catastrophizing and high sensitivity (N = 25), and (4) high catastrophizing and high sensitivity (N = 31). RESULTS One-way analysis of variance (ANOVA) revealed significant group differences (P < 0.05, η2 = 0.08 to 0.14) in all outcomes of this study (except functional avoidance), and post hoc analysis indicated the significant differences are between group 1 and 4. A cumulative impact is reflected by large effect sizes between group 1 and 4 (d = 0.8 to 1). The group 2 and 3 (one risk dimension groups: either high-PC or high-PPT) represent 47% of the total participants. CONCLUSIONS The study suggests both higher level of PC and pressure sensitivity have a cumulative impact on risk screening for pain-related outcomes, considering gender in functional avoidance (task-related outcome). A clinical presentation with high-PC (one dimension of risk) is not associated with high-PPT (another dimension of risk). This finding has important clinical and theoretical implications.
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Affiliation(s)
- Zakir Uddin
- School of Physical and Occupational Therapy, McGill University, Montreal, Quebec, Canada
| | - Arthur Woznowski-Vu
- School of Physical and Occupational Therapy, McGill University, Montreal, Quebec, Canada
| | - Daniel Flegg
- School of Physical and Occupational Therapy, McGill University, Montreal, Quebec, Canada
| | - Andrea Aternali
- School of Physical and Occupational Therapy, McGill University, Montreal, Quebec, Canada
| | - Timothy H Wideman
- School of Physical and Occupational Therapy, McGill University, Montreal, Quebec, Canada
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Catastrophizing Has a Better Prediction for TMD Than Other Psychometric and Experimental Pain Variables. Pain Res Manag 2020; 2020:7893023. [PMID: 33273993 PMCID: PMC7676933 DOI: 10.1155/2020/7893023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 10/21/2020] [Accepted: 10/24/2020] [Indexed: 01/11/2023]
Abstract
Temporomandibular disorders (TMDs) are characterized by moderate to severe pain in the masticatory muscles and/or the temporomandibular joint (TMJ). The present study is a part of a multidisciplinary project, initiated by the Norwegian Ministry of Health. The main purpose of this study is to compare a cohort of TMD patients to healthy individuals regarding experimental pain, the degree of disability caused by living with pain and psychometric variables, and to investigate which of these variables is the best predictor for TMD patients. We hypothesised that TMD patients have more disability when living with pain and lower pain thresholds than healthy controls, and those psychometric variables are stronger predictors than pain thresholds provoked by experimental pain. Sixty TMD patients were matched by sex and age to sixty healthy individuals without TMD symptoms or other musculoskeletal symptoms in the head and neck region. All subjects completed a questionnaire that included psychometric characteristics, that is, a one- and two-item version of the Pain Catastrophizing Scale, the Hospital Anxiety and Depression Scale (HADS), and the Roland Morris Scale (RMS), which measures disability when living with pain. They also underwent a clinical examination including the measurement of pain thresholds with electrical and pressure stimuli. The TMD patients had lower pain thresholds for experimental electrical and pressure stimuli compared with the controls (P < 0.05 and <0.001, respectively). They also scored higher than healthy individuals with disability living with pain (P < 0.001), anxiety (P < 0.001), depression (P < 0.001), and catastrophizing (P < 0.001). The results for anxiety, depression, and catastrophizing have been published earlier, and the reused data in this study are compared with RMS and pain thresholds. The conditional logistic regression model identified catastrophizing (OR = 2.42, CI 1.22–4.79) as a significant predictor of TMD patients. The results support this hypothesis and indicate that TMD patients have lower pain thresholds and more disability when living with pain compared to healthy individuals, where the strongest prediction for TMD was catastrophizing. Awareness of psychometric disabilities in TMD patients is of importance when considering the choice of treatment.
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Pinto Fiamengui LMS, Furquim BD, De la Torre Canales G, Fonseca Carvalho Soares F, Poluha RL, Palanch Repeke CE, Bonjardim LR, Garlet GP, Rodrigues Conti PC. Role of inflammatory and pain genes polymorphisms in temporomandibular disorder and pressure pain sensitivity. Arch Oral Biol 2020; 118:104854. [PMID: 32763472 DOI: 10.1016/j.archoralbio.2020.104854] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 07/24/2020] [Accepted: 07/27/2020] [Indexed: 01/03/2023]
Abstract
OBJECTIVE The aim of this study was to assess the correlation of inflammatory and pain genes polymorphisms with the presence of temporomandibular disorder (TMD) patients and with pressure pain sensitivity. DESIGN Data was collected from 268 consecutive subjects at Bauru School of Dentistry. Subjects aged younger than 20 years, with dental and neuropathic pain, sinusitis, cognitive and neurologic disorder were excluded. Included subjects were evaluated using the Research Diagnostic Criteria for Temporomandibular disorders and divided into two groups: TMD cases and healthy controls. Groups were submitted to pressure pain threshold (PPT) test for the temporomandibular joint, anterior temporalis and masseter muscles and genotyped for Val158Met, IL6-174, IL-1β-3954 and TNFA-308. Student's t-test and Pearson chi-square test were used to comparisons between groups. A linear multiple regression was used to evaluate the influence of genetics variables on the PPT and a bivariate analysis was used to assesses the influence of genetics variables on pain sensitivity below the PPT cut off of the structures in TMD group. RESULTS TMD group showed significantly lower PPT values for all structures when compared with control group (p < 0.001). SNP IL6-174 predicted higher pain sensitivity in the temporomandibular joint (p < 0.005) and in anterior temporalis muscle (p < 0.044) and SNP Val158Met in the masseter muscle (p < 0.038); when TMD group was divided according to PPT cut-off values the SNP Val158Met influenced increase pain sensibility in the masseter muscle. CONCLUSION TNFA-308 was associated with TMD and SNP IL6-174 and SNP Val158Met influenced pain sensitivity of patients with TMD.
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Affiliation(s)
| | - Bruno D'Aurea Furquim
- Bauru Orofacial Pain Group, Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo, Sao Paulo, Brazil
| | - Giancarlo De la Torre Canales
- Bauru Orofacial Pain Group, Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo, Sao Paulo, Brazil.
| | - Flávia Fonseca Carvalho Soares
- Bauru Orofacial Pain Group, Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Sao Paulo, Brazil
| | - Rodrigo Lorenzi Poluha
- Bauru Orofacial Pain Group, Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo, Sao Paulo, Brazil
| | | | - Leonardo Rigoldi Bonjardim
- Bauru Orofacial Pain Group, Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Sao Paulo, Brazil
| | | | - Paulo César Rodrigues Conti
- Bauru Orofacial Pain Group, Department of Prosthodontics, Bauru School of Dentistry, University of São Paulo, Sao Paulo, Brazil
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Li Z, Xia Y, Liu Z, Liu Y. Oral rehabilitation following successful TMD treatment with condylar position changes: A case report. Cranio 2020; 40:381-386. [PMID: 32729790 DOI: 10.1080/08869634.2020.1795589] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND A 31-year-old woman with crowns, fixed partial prostheses, and dental restorations complained of recurrent pain in the left and right temporomandibular joints during the last 2 years. CLINICAL PRESENTATION The symptoms of temporomandibular disorder (TMD) resolved successfully after a 3-month-long treatment with a repositioning splint. Pre- and post-operative cone-beam computed tomography revealed slight changes in the condylar position after splint use. Minimally invasive oral rehabilitation guided by digital design was performed to maintain the acquired stable position. The status of the restorations was good, and the TMD symptoms did not relapse during the 3-year follow-up. CONCLUSION This case report demonstrates the importance of a stable adapted condylar position after extensive prosthodontic treatment.
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Affiliation(s)
- Zhongjie Li
- Department of Temporomandibular Joint, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yingfeng Xia
- Department of Stomatology, The Second Hospital of Shandong University, Jinan, Shandong, China
| | - Zhan Liu
- Provincial Key Lab for Biomechanical Engineering, Sichuan University, Chengdu, China
| | - Yang Liu
- Department of Temporomandibular Joint, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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Females have greater susceptibility to develop ongoing pain and central sensitization in a rat model of temporomandibular joint pain. Pain 2020; 160:2036-2049. [PMID: 31430262 DOI: 10.1097/j.pain.0000000000001598] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Temporomandibular joint osteoarthritis (TMJOA) is a prevalent source of temporomandibular joint disorder (TMD). Women are more commonly diagnosed with TMD and are more likely to seek care at tertiary orofacial pain clinics. Limited knowledge regarding mechanisms underlying temporomandibular joint (TMJ) pain impairs development of improved pain management strategies. In a rat model of unilateral TMJOA, monosodium iodoacetate (MIA) produces joint pathology in a concentration-dependent manner. Unilateral MIA produces alterations in meal patterns in males and females without altering overnight time spent eating or weight across 2 weeks. Monosodium iodoacetate (80 mg/mL)-treated males develop ongoing pain within 2 weeks after MIA injection. Females develop ongoing pain at a 5-fold lower MIA concentration (16.6 mg/m). Monosodium iodoacetate (80 mg/mL)-treated males show spread of tactile hypersensitivity across the face during the first week after injection and then to the fore paws and hind paws during the second week after injection, indicating development of central sensitization. At the lower dose, female rats demonstrate a similar spread of tactile hypersensitivity, whereas male rats do not develop ongoing pain or spread of tactile hypersensitivity outside the area of the ipsilateral temporomandibular joint. These observations indicate that females have a higher susceptibility to development of ongoing pain and central sensitization compared with male rats that is not due to differences in MIA-induced joint pathology. This model of TMJOA pain can be used to explore sex differences in pain processes implicated in development of neuropathic pain, ongoing pain, and central sensitization, allowing for development of individualized strategies for prevention and treatment of TMD joint pain.
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Kwong KCL, Yeoh SC, Balasubramaniam R. Is oral dysaesthesia a somatic symptom disorder? J Oral Pathol Med 2020; 49:499-504. [PMID: 32531871 DOI: 10.1111/jop.13064] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 06/04/2020] [Indexed: 12/20/2022]
Abstract
Oral dysaesthesia is a condition characterised by persistent alteration to oral sensation, perceived by the patient to be abnormal and unpleasant, in the absence of mucosal pathology. Its aetiology remains uncertain. The condition was attributed as a psychosomatic disease for much of the 20th century, but with newer technologies, recent literature has mostly focused on a possible peripheral or central neuropathic aetiology to oral dysaesthesia. Despite this, psychotropic medications and psychological treatments remain forefront in the armamentarium for the management of oral dysaesthesia. This article aims to review the literature surrounding the pathogenesis of oral dysaesthesia and explore whether oral dysaesthesia is a somatic symptom disorder.
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Affiliation(s)
- Kenelm Chun Lam Kwong
- Department of Oral Medicine, Oral Pathology and Special Needs Dentistry, Westmead Hospital, Westmead, NSW, Australia
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Cornelison LE, Chelliboina N, Woodman SE, Durham PL. Dietary supplementation with grape seed extract prevents development of trigeminal sensitization and inhibits pain signaling in a preclinical chronic temporomandibular disorder model. J Oral Pathol Med 2020; 49:514-521. [PMID: 32531825 DOI: 10.1111/jop.13066] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 06/04/2020] [Indexed: 12/21/2022]
Abstract
BACKGROUND The risk factors neck muscle tension, prolonged jaw opening, and female gender are associated with developing temporomandibular disorders (TMD), which are characterized by persistent sensitization of trigeminal neurons and enhanced pain signaling. Dietary supplementation with a grape seed extract (GSE) can modulate expression of proteins that decrease neuronal excitability and trigeminal sensitization. METHODS Mechanical nocifensive thresholds over the masseter were determined using von Frey filaments in male and female adult Sprague Dawley rats. To promote trigeminal sensitization, animals were injected with complete Freund's adjuvant in the upper trapezius. After 8 days, animals were subjected to near maximal jaw opening and head withdrawal responses were determined for 28 days. Some animals received continuous supplementation with 0.5% GSE in their drinking water two weeks prior to trapezius injections. RESULTS Prolonged jaw opening increased the average number of nocifensive responses to mechanical stimuli for 14 days in males and females. However, trapezius inflammation prior to jaw opening promoted persistent mechanical sensitivity up to 28 days post-jaw opening in females, while in males nociceptive levels were still elevated at day 21. Supplementation with GSE, which is enriched in polyphenols and exhibits antioxidant and COX-2 activity, inhibited trigeminal nociception in response to jaw opening in both male and female sensitized animals. CONCLUSIONS Our findings provide evidence that multiple risk factors contribute to the development of a prolonged state of trigeminal sensitization that is more severe in females and provide preclinical evidence that supplementation with GSE could be beneficial in the management of TMD.
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Affiliation(s)
| | | | | | - Paul L Durham
- Missouri State University, Springfield, Missouri, USA
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Blanchard L, Goostree S, Duncombe A. Graded exposure and orthopedic manual physical therapy for kinesiophobia and function in chronic temporomandibular dysfunction: A case report. Cranio 2020; 40:454-467. [PMID: 32552574 DOI: 10.1080/08869634.2020.1779483] [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: 10/24/2022]
Abstract
BACKGROUND This case report describes the successful use of multi-modal physical therapy (PT), including orthopedic manual physical therapy (OMPT) and graded exposure, in a patient with chronic temporomandibular dysfunction (TMD). CLINICAL PRESENTATION A 41-yr old female presented with a five-year history of bilateral chronic myofascial TMD and comorbid neck/right arm pain. The patient was treated for 12 weeks with a focus on OMPT and graded exposure. The patient demonstrated clinically significant improvements on the Tampa Scale of Kinesiophobia-TMD, maximal mouth opening, Global Rating of Change, and Jaw Functional Limitation Scale. CLINICAL RELEVANCE Mechanisms underlying chronic TMD are complex. Current evidence supports PT management of physical impairments; however, neglecting central drivers or psychosocial factors may result in suboptimal outcomes. Physical therapists are able to address both peripheral and central mechanisms of pain, and future research should examine the utilization of multi-modal PT to improve kinesiophobia and function in patients with chronic TMD.
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Affiliation(s)
- Leanna Blanchard
- Department of Rehabilitation Services, University of Illinois Hospital and Health Sciences System, Chicago, IL, USA
| | | | - Alison Duncombe
- Department of Rehabilitation Services, University of Illinois Hospital and Health Sciences System, Chicago, IL, USA
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Effects on migraine, neck pain, and head and neck posture, of temporomandibular disorder treatment: Study of a retrospective cohort. Arch Oral Biol 2020; 114:104718. [DOI: 10.1016/j.archoralbio.2020.104718] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 03/23/2020] [Accepted: 04/01/2020] [Indexed: 12/26/2022]
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Smith MT, Remeniuk B, Finan PH, Speed TJ, Tompkins DA, Robinson M, Gonzalez K, Bjurstrom MF, Irwin MR. Sex differences in measures of central sensitization and pain sensitivity to experimental sleep disruption: implications for sex differences in chronic pain. Sleep 2020; 42:5146314. [PMID: 30371854 DOI: 10.1093/sleep/zsy209] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Indexed: 01/11/2023] Open
Abstract
Study Objectives Females demonstrate heightened central sensitization (CS), a risk factor for chronic pain characterized by enhanced responsivity of central nervous system nociceptors to normal or subthreshold input. Sleep disruption increases pain sensitivity, but sex has rarely been evaluated as a moderator and few experiments have measured CS. We evaluated whether two nights of sleep disruption alter CS measures of secondary hyperalgesia and mechanical temporal summation in a sex-dependent manner. We also evaluated differences in measures of pain sensitivity. Methods Seventy-nine healthy adults (female n = 46) participated in a randomized crossover experiment comparing two consecutive nights of eight pseudorandomly distributed forced awakenings (FA [-200 min sleep time]) against two nights of undisturbed sleep (US). We conducted sensory testing the mornings following Night 2; the heat-capsaicin pain model was used to induce secondary hyperalgesia. Results FA reduced total sleep time (REM and NREM Stage 3) more profoundly in males. We observed divergent, sex-dependent effects of FA on secondary hyperalgesia and temporal summation. FA significantly increased secondary hyperalgesia in males and significantly increased temporal summation in females. Sex differences were not attributable to differential sleep loss in males. FA also significantly reduced heat-pain threshold and cold pressor pain tolerance, independently of sex. Conclusions Sleep disruption enhances different pain facilitatory measures of CS in males and females suggesting that sleep disturbance may increase risk for chronic pain in males and females via distinct pathways. Findings have implications for understanding sex differences in chronic pain and investigating sleep in chronic pain prevention efforts.
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Affiliation(s)
- Michael T Smith
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University, School of Medicine, Baltimore, MD
| | - Bethany Remeniuk
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University, School of Medicine, Baltimore, MD
| | - Patrick H Finan
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University, School of Medicine, Baltimore, MD
| | - Traci J Speed
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University, School of Medicine, Baltimore, MD
| | - D Andrew Tompkins
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University, School of Medicine, Baltimore, MD.,Department of Psychiatry, UCSF School of Medicine, San Francisco, CA
| | - Mercedes Robinson
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University, School of Medicine, Baltimore, MD
| | - Kaylin Gonzalez
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University, School of Medicine, Baltimore, MD
| | - Martin F Bjurstrom
- Department of Psychiatry and Behavioral Sciences, Cousins Center for Psychoneuroimmunology, UCLA Semel Institute for Neuroscience and Human Behavior, Los Angeles, CA
| | - Michael R Irwin
- Department of Psychiatry and Behavioral Sciences, Cousins Center for Psychoneuroimmunology, UCLA Semel Institute for Neuroscience and Human Behavior, Los Angeles, CA
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35
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Tashiro A, Bereiter DA. The effects of estrogen on temporomandibular joint pain as influenced by trigeminal caudalis neurons. J Oral Sci 2020; 62:150-155. [PMID: 32132330 DOI: 10.2334/josnusd.19-0405] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
The signs and symptoms of persistent temporomandibular joint (TMJ)/muscle disorder (TMJD) pain suggest the existence of a central neural dysfunction or a problem of pain amplification. The etiology of chronic TMJD is not known; however, female sex hormones have been identified as significant risk factors. Converging lines of evidence indicate that the junctional region between the trigeminal subnucleus caudalis (Vc) and the upper cervical spinal cord, termed the Vc/C1-2 region, is the primary site for the synaptic integration of sensory input from TMJ nociceptors. In this paper, the mechanisms behind the estrogen effects on the processing of nociceptive inputs by neurons in the Vc/C1-2 region reported by human and animal studies are reviewed. The Vc/C1-2 region has direct connections to endogenous pain and autonomic control pathways, which are modified by estrogen status and are suggested to be critical for somatomotor and autonomic reflex responses of TMJ-related sensory signals.
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Affiliation(s)
| | - David A Bereiter
- Department of Diagnostic and Biological Sciences, University of Minnesota School of Dentistry
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36
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Khan K, Muller-Bolla M, Anacleto Teixeira Junior O, Gornitsky M, Guimarães AS, Velly AM. Comorbid conditions associated with painful temporomandibular disorders in adolescents from Brazil, Canada and France: A cross-sectional study. J Oral Rehabil 2019; 47:417-424. [PMID: 31834958 DOI: 10.1111/joor.12923] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 11/13/2019] [Accepted: 11/29/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND Painful temporomandibular disorder (TMD) is common among adolescents. Presence of painful comorbidities may worsen painful TMD and impact treatment effectiveness. OBJECTIVE The aim of this study was to assess the association between painful TMD and comorbidities. METHODOLOGY In this cross-sectional study, adolescents were recruited in Montreal (Canada), Nice (France) and Arceburgo (Brazil). Reliable instruments were used to assess painful TMD and comorbidities. Multivariable logistic and linear regression analyses were conducted to assess the study aims. RESULTS The prevalence of self-reported painful TMD was estimated at 31.6%; Arceburgo (31.6%), Montreal (23.4%) and Nice (31.8%). Painful TMD was more common among girls than boys (OR = 1.96). Painful TMD was associated with a higher number of comorbidities (OR = 1.77); Arceburgo (OR = 1.81), Montreal (OR = 1.80) and Nice (OR = 1.72). A stronger association was found between painful TMD and headaches (OR = 4.09) and a weaker one with stomach pain (OR = 1.40). Allergies were also related to painful TMD (OR = 1.43). CONCLUSION Painful TMD was associated with comorbidities. Headaches were consistently associated with painful TMD. Other associations were modified by sex and/or covariates related to the cities where participants were recruited.
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Affiliation(s)
- Khurram Khan
- Dental Department, Jewish General Hospital, Montreal, QC, Canada.,Faculty of Dentistry, McGill University, Montreal, QC, Canada
| | - Michèle Muller-Bolla
- Centre Hospitalier Universitaire de Nice, Nice, France.,Department of Pediatric Dentistry, Faculty of Dentistry, Nice, France.,Laboratory URB2i, University Paris Descartes, Paris, France
| | | | - Mervyn Gornitsky
- Dental Department, Jewish General Hospital, Montreal, QC, Canada.,Faculty of Dentistry, McGill University, Montreal, QC, Canada.,Lady Davis Institute for Medical Research, Montreal, QC, Canada
| | | | - Ana Miriam Velly
- Dental Department, Jewish General Hospital, Montreal, QC, Canada.,Faculty of Dentistry, McGill University, Montreal, QC, Canada.,Lady Davis Institute for Medical Research, Montreal, QC, Canada
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Khan J, Zusman T, Wang Q, Eliav E. Acute and Chronic Pain in Orofacial Trauma Patients. J Endod 2019; 45:S28-S38. [DOI: 10.1016/j.joen.2019.05.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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38
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Khan J, Zusman T, Wang Q, Eliav E. Acute and chronic pain in orofacial trauma patients. Dent Traumatol 2019; 35:348-357. [PMID: 31125489 DOI: 10.1111/edt.12493] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Accepted: 05/21/2019] [Indexed: 01/07/2023]
Abstract
Trauma or injury to the dentition and supporting tissues is associated with pain and discomfort, as expected, that may present immediately, shortly afterwards, or within a few days. Pain is an essential response to injury because it allows the organism to develop avoidance behavior to potential threats and helps the organism to avoid usage of the injured organ during the healing process. Not only does external trauma induce pain, but also essential invasive dental procedures such as extractions, dental implant insertions, root canal treatments, and oral surgeries are accompanied by similar post-surgical (post-traumatic) pain. The pain intensity after trauma varies and does not always correlate with the extent of injury. Trauma to the orofacial region or the teeth may also indirectly affect and induce pain in other orofacial structures such as the masticatory muscles, the temporomandibular joint, and even the cervical spine. In most cases, the pain will resolve as soon as healing of the affected tissue occurs or after dental and routine palliative treatment. In a limited number of cases, the pain persists beyond healing and evolves into a chronic pain state. Chronic pain in the orofacial region presents diagnostic and management challenges. Misdiagnosis or delayed diagnosis of the oral chronic pain condition may lead to unnecessary dental treatment. This article will discuss diagnosis and treatment for acute and chronic pain as well as potential mechanisms involved in the undesirable transition from acute to chronic pain.
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Affiliation(s)
- Junad Khan
- Orofacial Pain and TMJ Disorders, Eastman Institute for Oral Health, Rochester, NY, USA
| | - Tal Zusman
- Orofacial Pain and TMJ Disorders, Eastman Institute for Oral Health, Rochester, NY, USA
| | - Qian Wang
- Orofacial Pain and TMJ Disorders, Eastman Institute for Oral Health, Rochester, NY, USA
| | - Eli Eliav
- Eastman Institute for Oral Health, Rochester, NY, USA
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Staud R, Godfrey MM, Mejia M, Ramanlal R, Riley JL, Robinson ME. Usefulness of Ramp & Hold Procedures for Testing of Pain Facilitation in Human Participants: Comparisons With Temporal Summation of Second Pain. THE JOURNAL OF PAIN 2019; 21:390-398. [PMID: 31425887 DOI: 10.1016/j.jpain.2019.08.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 07/26/2019] [Accepted: 08/05/2019] [Indexed: 12/16/2022]
Abstract
Quantitative sensory testing (QST) is used to systematically interrogate normal responding and alterations of nervous system function, including pain-related central sensitization (CS). However, up to now, QST of CS in human subjects has been mostly focused on temporal summation of second pain (TSSP), has been difficult to perform, and has been associated with low reliability. In contrast, slow ramp & hold (RH) procedures are simpler tests of temporal summation and easier to perform. We examined the usefulness of RH procedures as reliable generators of CS using 2 validated QST procedures: decay of pain aftersensations and wind-down. Twenty-seven pain-free subjects (74% female) were enrolled into the study. Trains of sensitivity-adjusted TSSP or RH heat stimuli were applied to the hands of participants to achieve moderate temporal pain summation (50 Numerical Rating Scale [NRS] [0-100]). Fifteen-second aftersensations and 30-second wind-down related to TSSP or RH were used for CS comparisons. Reliability of all test procedures was tested over 24 hours. Use of sensitivity-adjusted TSSP and RH heat stimuli resulted in average pain ratings of 48.2 and 49.6 NRS, respectively. Aftersensations or wind-down decay were not significantly different after either TSSP or RH, (all P > .05), indicating that each procedure achieved similar levels of short-term CS. Sensitivity-adjusted RH stimuli were well tolerated and resulted in reliable pain increases of ∼50 NRS. The magnitude of short-term CS, determined by aftersensations and wind-down was similar after sensitivity-adjusted TSSP and RH stimuli (P > .05), suggesting that pain facilitation of healthy participants and likely chronic pain patients can not only be tested with TSSP but also with RH procedures. PERSPECTIVE: This article examines the ability of RH procedures to generate similar central sensitivity augmentation than TSSP. The results suggest that RH is similarly well suited as TSSP to explore central pain mechanisms in healthy subjects and most likely also in chronic pain patients.
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Affiliation(s)
- Roland Staud
- Department of Medicine, University of Florida, Gainesville, Florida.
| | | | - Marlin Mejia
- Department of Medicine, University of Florida, Gainesville, Florida
| | - Riddhi Ramanlal
- Department of Medicine, University of Florida, Gainesville, Florida
| | - Joseph L Riley
- Department of Dentistry, University of Florida, Gainesville, Florida
| | - Michael E Robinson
- Department of Clinical & Health Psychology, University of Florida, Gainesville, Florida
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Moayedi M, Hodaie M. Trigeminal nerve and white matter brain abnormalities in chronic orofacial pain disorders. Pain Rep 2019; 4:e755. [PMID: 31579849 PMCID: PMC6728001 DOI: 10.1097/pr9.0000000000000755] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 03/27/2019] [Accepted: 04/12/2019] [Indexed: 02/02/2023] Open
Abstract
Medial temporal lobe activity is investigated in meta-analyses of experimental and chronic pain. Abnormal hippocampal connectivity is found in patients with chronic low back pain. The orofacial region is psychologically important, given that it serves fundamental and important biological purposes. Chronic orofacial pain disorders affect the head and neck region. Although some have clear peripheral etiologies, eg, classic trigeminal neuralgia, others do not have a clear etiology (eg, muscular temporomandibular disorders). However, these disorders provide a unique opportunity in terms of elucidating the neural mechanisms of these chronic pain conditions: both the peripheral and central nervous systems can be simultaneously imaged. Diffusion-weighted imaging and diffusion tensor imaging have provided a method to essentially perform in vivo white matter dissections in humans, and to elucidate abnormal structure related to clinical correlates in disorders, such as chronic orofacial pains. Notably, the trigeminal nerve anatomy and architecture can be captured using diffusion imaging. Here, we review the trigeminal somatosensory pathways, diffusion-weighted imaging methods, and how these have contributed to our understanding of the neural mechanisms of chronic pain disorders affecting the trigeminal system. We also discuss novel findings indicating the potential for trigeminal nerve diffusion imaging to develop diagnostic and precision medicine biomarkers for trigeminal neuralgia. In sum, diffusion imaging serves both an important basic science purpose in identifying pain mechanisms, but is also a clinically powerful tool that can be used to improve treatment outcomes.
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Affiliation(s)
- Massieh Moayedi
- Faculty of Dentistry, University of Toronto, Toronto, ON, Canada.,University of Toronto Centre for the Study of Pain, University of Toronto, Toronto, ON, Canada.,Department of Dentistry, Mount Sinai Hospital, Toronto, ON, Canada
| | - Mojgan Hodaie
- University of Toronto Centre for the Study of Pain, University of Toronto, Toronto, ON, Canada.,Division of Neurosurgery and Krembil Research Institute, Toronto Western Hospital, Toronto Western Hospital, University Health Network, Toronto, ON, Canada.,Institute of Medical Science, University of Toronto, Toronto, ON, Canada.,Department of Surgery, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
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41
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Tanaka K, Murata S, Nishigami T, Mibu A, Manfuku M, Shinohara Y, Tanabe A, Ono R. The central sensitization inventory predicts pain‐related disability for musculoskeletal disorders in the primary care setting. Eur J Pain 2019; 23:1640-1648. [DOI: 10.1002/ejp.1443] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 05/18/2019] [Accepted: 06/09/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Katsuyoshi Tanaka
- Department of Community Health Sciences Kobe University Graduate School of Health Sciences Kobe Japan
- Department of Rehabilitation Tanabe Orthopaedics Osaka Japan
| | - Shunsuke Murata
- Department of Community Health Sciences Kobe University Graduate School of Health Sciences Kobe Japan
- Japan Society for the Promotion of Science Chiyoda Japan
- Department of Preventive Medicine and Epidemiology National Cerebral and Cardiovascular Center Research Institute Osaka Japan
| | - Tomohiko Nishigami
- Department of Nursing and Physical Therapy Konan Women’s University Kobe Japan
| | - Akira Mibu
- Department of Nursing and Physical Therapy Konan Women’s University Kobe Japan
| | | | | | - Akihito Tanabe
- Department of Rehabilitation Tanabe Orthopaedics Osaka Japan
| | - Rei Ono
- Department of Community Health Sciences Kobe University Graduate School of Health Sciences Kobe Japan
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Effects of manipulating the interstimulus interval on heat-evoked temporal summation of second pain across the age span. Pain 2019; 160:95-101. [PMID: 30169423 DOI: 10.1097/j.pain.0000000000001382] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
This study examined the effects of interstimulus interval (ISI) on heat-evoked temporal summation of second pain (TSSP) and tested whether greatest maintenance of TSSP would occur at longer ISIs in older adults. Several lines of evidence support that TSSP is associated with central sensitization and is centrally mediated. The participants were 198 community-dwelling adults divided into 3 age cohorts (18-39, 40-59, and 60-78 years of age). Six TSSP trials used a train of 10 contacts with a preheated probe that made repetitive contact with the volar forearm. Participants completed 2 trials at each ISI of 2.5, 3.5, and 4.5 seconds. The intraclass correlations for each pair of trials support the reliability of the current methodology. Temporal summation of second pain scores declined in a time-dependent manner across ISI. In addition, greater maintenance of TSSP at longer ISIs was observed in middle-aged and older age groups compared with the younger cohort. Significant associations were found between TSSP and measures of recent pain. Greater summation at longer ISIs in older adults would suggest slower decay of excitability in spinal neurons and infer increased risk for central sensitization with advancing age.
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43
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Evaluation of Biofeedback Usefulness in Masticatory Muscle Activity Management-A Systematic Review. J Clin Med 2019; 8:jcm8060766. [PMID: 31151198 PMCID: PMC6616888 DOI: 10.3390/jcm8060766] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Revised: 05/22/2019] [Accepted: 05/25/2019] [Indexed: 12/14/2022] Open
Abstract
Temporomandibular disorders (TMD) have multifactorial and complex etiology. Regardless of their etiology, all those conditions may result in centrally mediated chronic muscle pain, myalgia, myofascial pain, myofibrotic contracture, myosistis, myospasm, headache and a variety of neck, shoulder, upper back and lower back pain. Biofeedback (BF) is one of methods that has been used for more than 50 years in rehabilitation to facilitate normal movement patterns after injuries. Some studies suggest that biofeedback may be an effective treatment option for patients with different muscle disorders. The aim of this study was to evaluate the efficiency of biofeedback in masticatory muscle activity management in the light of current medical literature. The authors followed the Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) guidelines for this systematic review. The authors searched the MEDLINE, Scopus, Web of Science, CINAHL databases to identify relevant publications. Finally 10 papers were included. Most of the selected studies showed a significant correlation between biofeedback usage and reduction of masticatory muscle activity. By analyzing qualified studies, it can be concluded that biofeedback can be an effective tool in masticatory muscle activity management.
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44
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Measurements of Temporal Summation of Heat Pain: a Pilot Investigation in Healthy Humans. NEUROPHYSIOLOGY+ 2019. [DOI: 10.1007/s11062-019-09773-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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45
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Latka D, Miekisiak G, Kozlowska K, Olbrycht T, Chowaniec J, Latka K, Niedzwiecki M, Ruscheweyh R, Jarmuzek P. Translation, validation, and cross-cultural adaptation of the Polish version of the pain sensitivity questionnaire. J Pain Res 2019; 12:969-973. [PMID: 30936737 PMCID: PMC6421867 DOI: 10.2147/jpr.s189427] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction The purpose of this study was to provide a translation, cross-cultural adaptation, and validation of the Polish language version of the pain sensitivity questionnaire (PSQ). The process followed widely accepted guidelines. Methods The translated questionnaire underwent thorough psychometric testing. In total, the data of 144 subjects (mean age 52.53±13 years), who underwent evaluation for lower back pain, were included. Results The exploratory factor analysis revealed a two-factor structure, PSQ-moderate and PSQ-minor. The internal consistency was good (Cronbach’s α was 0.96). There was a fair and significant correlation between the results of the PSQ and the coping strategy questionnaire (CSQ; Spearman’s rho was 0.27). The test-retest reliability was favorable, and the intraclass correlation coefficient (ICC) for the CSQ total was 0.93 with a mean interval of 9.04 days between administrations. Conclusion Our results show that the Polish version of the PSQ is valid and can be recommended for Polish-speaking patients.
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Affiliation(s)
- Dariusz Latka
- Department of Anatomy, Institute of Medicine, University of Opole, Opole, Poland, .,Department of Neurosurgery, University Hospital in Opole, Opole, Poland,
| | - Grzegorz Miekisiak
- Department of Anatomy, Institute of Medicine, University of Opole, Opole, Poland, .,Department of Neurosurgery, University Hospital in Opole, Opole, Poland,
| | - Klaudia Kozlowska
- Department of Bioengineering, Institute of Biomedical Engineering, Technical University of Wroclaw, Wroclaw, Poland
| | - Tomasz Olbrycht
- Department of Neurosurgery, University Hospital in Opole, Opole, Poland,
| | - Jacek Chowaniec
- Department of Neurosurgery, University Hospital in Opole, Opole, Poland,
| | - Kajetan Latka
- Department of Neurosurgery, University Hospital in Opole, Opole, Poland,
| | | | - Ruth Ruscheweyh
- Department of Neurology, University of Munich, Munich, Germany
| | - Paweł Jarmuzek
- Department of Neurosurgery, University Hospital, Zielona Gora, Poland
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46
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Sturycz CA, Hellman N, Payne MF, Kuhn BL, Hahn B, Lannon EW, Palit S, Güereca YM, Toledo TA, Shadlow JO, Rhudy JL. Race/Ethnicity Does Not Moderate the Relationship Between Adverse Life Experiences and Temporal Summation of the Nociceptive Flexion Reflex and Pain: Results From the Oklahoma Study of Native American Pain Risk. THE JOURNAL OF PAIN 2019; 20:941-955. [PMID: 30776495 DOI: 10.1016/j.jpain.2019.02.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 02/11/2019] [Accepted: 02/11/2019] [Indexed: 12/22/2022]
Abstract
Adverse life experiences (ALEs) are associated with hyperalgesia and chronic pain, but the underlying mechanisms are poorly understood. One potential mechanism is hyperexcitability of spinal neurons (ie, central sensitization). Given that Native Americans (NAs) are more likely to have ALEs and to have a higher prevalence of chronic pain, the relationship between ALEs and spinal hyperexcitability might contribute to their pain risk. The present study assessed temporal summation of the nociceptive flexion reflex (TS-NFR; a correlate of spinal hyperexcitability) and pain (TS-Pain) in 246 healthy, pain-free non-Hispanic whites and NAs. The Life Events Checklist was used to assess the number of ALEs. Multilevel growth models were used to predict TS-NFR and TS-Pain, after controlling for age, perceived stress, psychological problems, negative and positive affect, and painful stimulus intensity. ALEs and negative affect were significantly associated with greater pain, but not enhanced TS-Pain. By contrast, ALEs were associated with enhanced TS-NFR. Race did not moderate these relationships. This finding implies that ALEs promote hyperalgesia as a result of increased spinal neuron excitability. Although relationships between ALEs and the nociceptive flexion reflex/pain were not stronger in NAs, given prior evidence that NAs experience more ALEs, this factor might contribute to the higher prevalence of chronic pain in NAs. PERSPECTIVE: This study found a dose-dependent relationship between ALEs and spinal neuron excitability. Although the relationship was not stronger in NAs than non-Hispanic whites, given prior evidence that NAs experience more ALEs, this could contribute to the higher prevalence of chronic pain in NAs.
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Affiliation(s)
| | - Natalie Hellman
- Department of Psychology, The University of Tulsa, Tulsa, Oklahoma
| | - Michael F Payne
- Department of Psychology, The University of Tulsa, Tulsa, Oklahoma
| | - Bethany L Kuhn
- Department of Psychology, The University of Tulsa, Tulsa, Oklahoma
| | - Burkhart Hahn
- Department of Psychology, The University of Tulsa, Tulsa, Oklahoma
| | - Edward W Lannon
- Department of Psychology, The University of Tulsa, Tulsa, Oklahoma
| | - Shreela Palit
- Department of Psychology, The University of Tulsa, Tulsa, Oklahoma
| | - Yvette M Güereca
- Department of Psychology, The University of Tulsa, Tulsa, Oklahoma
| | - Tyler A Toledo
- Department of Psychology, The University of Tulsa, Tulsa, Oklahoma
| | - Joanna O Shadlow
- Department of Psychology, The University of Tulsa, Tulsa, Oklahoma
| | - Jamie L Rhudy
- Department of Psychology, The University of Tulsa, Tulsa, Oklahoma.
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47
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Uddin Z, Woznowski-Vu A, Flegg D, Aternali A, Wickens R, Wideman TH. Evaluating the novel added value of neurophysiological pain sensitivity within the fear-avoidance model of pain. Eur J Pain 2019; 23:957-972. [PMID: 30648781 DOI: 10.1002/ejp.1364] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 12/09/2018] [Accepted: 01/05/2019] [Indexed: 12/20/2022]
Abstract
BACKGROUND The fear-avoidance model (FAM) is a leading theoretical paradigm for explaining persistent pain following musculoskeletal injury. The model suggests that as injuries heal, pain-related outcomes are increasingly determined by psychological, rather than physiological factors. Increasing literature, however, suggests that neurophysiological processes related to pain sensitivity also play an important role in chronicity. To date, there has been limited research that has specifically explored the role of pain sensitivity within the FAM. This study addresses this gap by evaluating whether clinical measures of pain sensitivity help explain FAM-related outcomes, beyond model-relevant psychological predictors. METHODS The study sample consisted of 80 adults with chronic and widespread musculoskeletal pain. Participants completed a single testing session that included measures of all of the major constructs of the FAM, including pain catastrophizing, pain-related fear, activity avoidance (self-report and functional measures), pain-related disability, depression and pain severity, as well as a battery of quantitative sensory testing that included measures of pressure pain threshold and temporal summation of mechanical pain across eight body sites. RESULTS A series of hierarchical regression analyses revealed that after controlling for the psychological predictors of the FAM, indices of pain sensitivity significantly predicted 4 of the 5 FAM-related outcomes (p < 0.05). Depression was the only outcome not significantly predicted by pain sensitivity. Interestingly, measures of pain sensitivity, but not FAM psychological factors, predicted the functional measure of activity avoidance. CONCLUSIONS These findings provide further evidence for the importance of neurophysiological factors within the FAM and have important clinical and theoretical implications. SIGNIFICANCE This study provides evidence for the unique and added value of neurophysiological factors within the Fear Avoidance Model of pain and for the importance of integrating both sensory and psychological factors within both theoretical paradigms and clinical management strategies.
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Affiliation(s)
- Zakir Uddin
- School of Physical and Occupational Therapy, McGill University, Montreal, QC, Canada
| | - Arthur Woznowski-Vu
- School of Physical and Occupational Therapy, McGill University, Montreal, QC, Canada
| | - Daniel Flegg
- School of Physical and Occupational Therapy, McGill University, Montreal, QC, Canada
| | - Andrea Aternali
- School of Physical and Occupational Therapy, McGill University, Montreal, QC, Canada
| | - Rebekah Wickens
- School of Physical and Occupational Therapy, McGill University, Montreal, QC, Canada
| | - Timothy H Wideman
- School of Physical and Occupational Therapy, McGill University, Montreal, QC, Canada
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48
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Moana-Filho EJ, Herrero Babiloni A. Endogenous pain modulation in chronic temporomandibular disorders: Derivation of pain modulation profiles and assessment of its relationship with clinical characteristics. J Oral Rehabil 2018; 46:219-232. [DOI: 10.1111/joor.12745] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 09/26/2018] [Accepted: 10/31/2018] [Indexed: 01/14/2023]
Affiliation(s)
- Estephan J. Moana-Filho
- Division of TMD & Orofacial Pain, School of Dentistry; University of Minnesota; Minneapolis Minnesota
| | - Alberto Herrero Babiloni
- Division of TMD & Orofacial Pain, School of Dentistry; University of Minnesota; Minneapolis Minnesota
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49
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Affiliation(s)
- Steven E. Harte
- Department of Anesthesiology Chronic Pain and Fatigue Research Center University of Michigan Ann Arbor Michigan
| | - Richard E. Harris
- Department of Anesthesiology Chronic Pain and Fatigue Research Center University of Michigan Ann Arbor Michigan
| | - Daniel J. Clauw
- Department of Anesthesiology Chronic Pain and Fatigue Research Center University of Michigan Ann Arbor Michigan
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50
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Williams DA. Phenotypic Features of Central Sensitization. JOURNAL OF APPLIED BIOBEHAVIORAL RESEARCH 2018; 23:e12135. [PMID: 30479469 PMCID: PMC6251410 DOI: 10.1111/jabr.12135] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
PURPOSE The current manuscript reviews approaches for phenotyping central sensitization (CS). METHODS The manuscript covers the concept of diagnostic phenotyping, use of endophenotypes, biomarkers, and symptom clusters. Specifically, the components of CS that include general sensory sensitivity (assessed by quantitative sensory testing) and a symptom cluster denoting sleep difficulties, pain, affect, cognitive difficulties, and low energy (S.P.A.C.E.). RESULTS Each of the assessment domains are described with reference to CS and their presence in chronic overlapping pain conditions (COPCs) - conditions likely influenced by CS. CONCLUSIONS COPCs likely represent clinical diagnostic phenotypes of CS. Components of CS can also be assessed using QST or self-report instruments designed to assess single elements of CS or more general composite indices.
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Affiliation(s)
- David A Williams
- Department of Anesthesiology, University of Michigan Health System, 24 Frank Lloyd Wright Drive, P.O. Box 385, Lobby M, Ann Arbor, MI 48106
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