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Kennedy E, Manhapra A, Miles SR, Martindale S, Rowland J, Mobasher H, Myers M, Panahi S, Walker WC, Pugh MJ. The Impact of Non-Pain Factors on Pain Interference Among U.S. Service Members and Veterans with Symptoms of Mild Traumatic Brain Injury. J Neurotrauma 2024. [PMID: 38907690 DOI: 10.1089/neu.2024.0126] [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: 06/24/2024] Open
Abstract
U.S. Service members and Veterans (SM/V) experience elevated rates of traumatic brain injury (TBI), chronic pain, and other non-pain symptoms. However, the role of non-pain factors on pain interference levels remains unclear among SM/Vs, particularly those with a history of TBI. The primary objective of this study was to identify factors that differentiate high/low pain interference, given equivalent pain intensity among U.S. SM/V participating in the ongoing Long-term Impact of Military-relevant Brain Injury Consortium-Chronic Effects of Neurotrauma Consortium (LIMBIC-CENC) national multi-center prospective longitudinal observational study. An explainable machine learning was used to identify key predictors of pain interference conditioned on equivalent pain intensity. The final sample consisted of n = 1,577 SM/Vs who were predominantly male (87%), and 83.6% had a history of mild TBI(s) (mTBI), while 16.4% were TBI negative controls. The sample was categorized according to pain interference level (Low: 19.9%, Moderate: 52.5%, and High: 27.6%). Both pain intensity scores and pain interference scores increased with the number of mTBIs (p < 0.001), and there was evidence of a dose response between the number of injuries and pain scores. Machine learning models identified fatigue and anxiety as the most important predictors of pain interference, whereas emotional control was protective. Partial dependence plots identified that marginal effects of fatigue and anxiety were associated with pain interference (p < 0.001), but the marginal effect of mTBI was not significant in models considering all variables (p > 0.05). Non-pain factors are associated with functional limitations and disability experience among SM/V with an mTBI history. The functional effects of pain may be mediated through multiple other factors. Pain is a multi-dimensional experience that may benefit most from holistic treatment approaches that target comorbidities and build supports that promote recovery.
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Affiliation(s)
- Eamonn Kennedy
- Informatics, Decision-Enhancement and Analytic Sciences Center, Virginia Salt Lake City Health Care System, Salt Lake City, Utah, USA
- Division of Epidemiology, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Ajay Manhapra
- Hampton VA Medical Center, Hampton, Virginia, USA
- Department of Psychiatry, Yale School of Medicine, New Haven, Connecticut, USA
| | - Shannon R Miles
- Mental Health and Behavioral Sciences Service, James A. Haley Veterans' Affairs Hospital, Tampa, Florida, USA
- Department of Psychiatry & Behavioral Neurosciences, Morsani College of Medicine, University of South Florida, Tampa, Florida, USA
| | - Sarah Martindale
- Mid-Atlantic Mental Illness Research, Education, and Clinical Center, Research and Academic Affairs Service Line, W.G. (Bill) Hefner VA Healthcare System, Salisbury, North Carolina, USA
- Department of Physiology & Pharmacology, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - Jared Rowland
- Mid-Atlantic Mental Illness Research, Education, and Clinical Center, Research and Academic Affairs Service Line, W.G. (Bill) Hefner VA Healthcare System, Salisbury, North Carolina, USA
- Department of Neurobiology & Anatomy, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - Helal Mobasher
- Informatics, Decision-Enhancement and Analytic Sciences Center, Virginia Salt Lake City Health Care System, Salt Lake City, Utah, USA
- Division of Epidemiology, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Madeleine Myers
- Informatics, Decision-Enhancement and Analytic Sciences Center, Virginia Salt Lake City Health Care System, Salt Lake City, Utah, USA
- Division of Epidemiology, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Samin Panahi
- Informatics, Decision-Enhancement and Analytic Sciences Center, Virginia Salt Lake City Health Care System, Salt Lake City, Utah, USA
- Division of Epidemiology, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - William C Walker
- PM & R Service, Richmond Veterans Affairs Medical Center (VAMC), Richmond, Virginia, USA
- Department of Physical Medicine and Rehabilitation (PM&R), Virginia Commonwealth University, Richmond, Virginia, USA
| | - Mary Jo Pugh
- Informatics, Decision-Enhancement and Analytic Sciences Center, Virginia Salt Lake City Health Care System, Salt Lake City, Utah, USA
- Division of Epidemiology, University of Utah School of Medicine, Salt Lake City, Utah, USA
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Bouloux GF, Chou J, DiFabio V, Ness G, Perez D, Mercuri L, Chung W, Crago CA. The Contemporary Management of Temporomandibular Joint Intra-Articular Pain and Dysfunction. J Oral Maxillofac Surg 2024; 82:623-631. [PMID: 38280727 DOI: 10.1016/j.joms.2024.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 12/22/2023] [Accepted: 01/02/2024] [Indexed: 01/29/2024]
Abstract
The understanding of the causes of temporomandibular joint pain and dysfunction has evolved over 50 years. Historically, the term internal derangement has been used to describe the abnormal relationship between the articular disc, condyle, and glenoid fossa, which was thought to correlate with patient symptoms. It is now known that the pathophysiology of intra-articular pain and dysfunction (IPD) involves synovitis, capsular impingement, symptomatic disc displacement, or a combination of these. Symptomatic disc displacement should only be considered to be a potential source of IPD after synovitis and capsular impingement have been treated. This philosophy provides the opportunity for most patients with IPD to be initially treated nonsurgically or with minimally invasive procedures such as arthrocentesis or arthroscopy.
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Affiliation(s)
- Gary F Bouloux
- J David Allen Professor and Division Chief, Division of Oral and Maxillofacial Surgery, Department of Surgery, Emory University School of Medicine, Atlanta, GA.
| | - Joli Chou
- Associate Professor, Department Of Oral and Maxillofacial Surgery, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA
| | - Vince DiFabio
- Associate Clinical Professor, Oral and Maxillofacial Surgery, University of Maryland School of Dentistry, University of Maryland Medical Center, Baltimore, MD
| | - Greg Ness
- Emeritus Professor-Clinical, The Ohio State University, Private Practice, Oral and Facial Surgery for Adults and Children, Columbus, OH
| | - Daniel Perez
- Associate Professor and Program Director, Oral and Maxillofacial Surgery, University Texas Health Sciences San Antonio, San Antonio, TX
| | - Louis Mercuri
- Visiting Professor, Department of Orthopedic Surgery, Rush University Medical Center, Adjunct Professor, Department of Bioengineering, University of Illinois Chicago, Chicago, IL
| | - William Chung
- Clinical Professor, Residency Program Director, Indiana University School of Dentistry and Hospital Medicine, Indianapolis, IN
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3
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Khan MA, Koh RGL, Rashidiani S, Liu T, Tucci V, Kumbhare D, Doyle TE. Cracking the Chronic Pain code: A scoping review of Artificial Intelligence in Chronic Pain research. Artif Intell Med 2024; 151:102849. [PMID: 38574636 DOI: 10.1016/j.artmed.2024.102849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 03/15/2024] [Accepted: 03/19/2024] [Indexed: 04/06/2024]
Abstract
OBJECTIVE The aim of this review is to identify gaps and provide a direction for future research in the utilization of Artificial Intelligence (AI) in chronic pain (CP) management. METHODS A comprehensive literature search was conducted using various databases, including Ovid MEDLINE, Web of Science Core Collection, IEEE Xplore, and ACM Digital Library. The search was limited to studies on AI in CP research, focusing on diagnosis, prognosis, clinical decision support, self-management, and rehabilitation. The studies were evaluated based on predefined inclusion criteria, including the reporting quality of AI algorithms used. RESULTS After the screening process, 60 studies were reviewed, highlighting AI's effectiveness in diagnosing and classifying CP while revealing gaps in the attention given to treatment and rehabilitation. It was found that the most commonly used algorithms in CP research were support vector machines, logistic regression and random forest classifiers. The review also pointed out that attention to CP mechanisms is negligible despite being the most effective way to treat CP. CONCLUSION The review concludes that to achieve more effective outcomes in CP management, future research should prioritize identifying CP mechanisms, CP management, and rehabilitation while leveraging a wider range of algorithms and architectures. SIGNIFICANCE This review highlights the potential of AI in improving the management of CP, which is a significant personal and economic burden affecting more than 30% of the world's population. The identified gaps and future research directions provide valuable insights to researchers and practitioners in the field, with the potential to improve healthcare utilization.
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Affiliation(s)
- Md Asif Khan
- Department of Electrical and Computer Engineering at McMaster University, Hamilton, ON L8S 4K1, Canada
| | - Ryan G L Koh
- KITE Research Institute, Toronto Rehabilitation Institute - University Health Network, Toronto, ON M5G 2A2, Canada
| | - Sajjad Rashidiani
- Department of Electrical and Computer Engineering at McMaster University, Hamilton, ON L8S 4K1, Canada
| | - Theodore Liu
- Department of Electrical and Computer Engineering at McMaster University, Hamilton, ON L8S 4K1, Canada
| | - Victoria Tucci
- Faculty of Health Sciences at McMaster University, Hamilton, ON L8S 4K1, Canada
| | - Dinesh Kumbhare
- KITE Research Institute, Toronto Rehabilitation Institute - University Health Network, Toronto, ON M5G 2A2, Canada
| | - Thomas E Doyle
- Department of Electrical and Computer Engineering at McMaster University, Hamilton, ON L8S 4K1, Canada.
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Wang Y, Kim SH, Klein ME, Chen J, Gu E, Smith S, Bortsov A, Slade GD, Zhang X, Nackley AG. A mouse model of chronic primary pain that integrates clinically relevant genetic vulnerability, stress, and minor injury. Sci Transl Med 2024; 16:eadj0395. [PMID: 38598615 DOI: 10.1126/scitranslmed.adj0395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 03/15/2024] [Indexed: 04/12/2024]
Abstract
Chronic primary pain conditions (CPPCs) affect over 100 million Americans, predominantly women. They remain ineffectively treated, in large part because of a lack of valid animal models with translational relevance. Here, we characterized a CPPC mouse model that integrated clinically relevant genetic (catechol-O-methyltransferase; COMT knockdown) and environmental (stress and injury) factors. Compared with wild-type mice, Comt+/- mice undergoing repeated swim stress and molar extraction surgery intervention exhibited pronounced multisite body pain and depressive-like behavior lasting >3 months. Comt+/- mice undergoing the intervention also exhibited enhanced activity of primary afferent nociceptors innervating hindpaw and low back sites and increased plasma concentrations of norepinephrine and pro-inflammatory cytokines interleukin-6 (IL-6) and IL-17A. The pain and depressive-like behavior were of greater magnitude and longer duration (≥12 months) in females versus males. Furthermore, increases in anxiety-like behavior and IL-6 were female-specific. The effect of COMT genotype × stress interactions on pain, IL-6, and IL-17A was validated in a cohort of 549 patients with CPPCs, demonstrating clinical relevance. Last, we assessed the predictive validity of the model for analgesic screening and found that it successfully predicted the lack of efficacy of minocycline and the CB2 agonist GW842166X, which were effective in spared nerve injury and complete Freund's adjuvant models, respectively, but failed in clinical trials. Yet, pain in the CPPC model was alleviated by the beta-3 adrenergic antagonist SR59230A. Thus, the CPPC mouse model reliably recapitulates clinically and biologically relevant features of CPPCs and may be implemented to test underlying mechanisms and find new therapeutics.
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Affiliation(s)
- Yaomin Wang
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Shin Hyung Kim
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University School of Medicine, Durham, NC 27710, USA
- Department of Anesthesiology and Pain Medicine, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Marguerita E Klein
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Jiegen Chen
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Elizabeth Gu
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Shad Smith
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Andrey Bortsov
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Gary D Slade
- Center for Pain Research and Innovation, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Xin Zhang
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Andrea G Nackley
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University School of Medicine, Durham, NC 27710, USA
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC 27710, USA
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Al-Hamed F, Alonso A, Vivaldi D, Smith S, Meloto CB. The Adaptive, Pain Sensitive, and Global Symptoms Clusters: Evidence from a Patient-Based Study. JDR Clin Trans Res 2024; 9:170-179. [PMID: 37114677 PMCID: PMC10943621 DOI: 10.1177/23800844231164076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023] Open
Abstract
OBJECTIVES The largest epidemiologic study conducted about painful temporomandibular disorders (pTMDs) to date identified 3 clusters of individuals with similar symptoms-adaptive, pain sensitive, and global symptoms-which hold promise as a means of personalizing pain care. Our goal was to compare the clinical and psychological characteristics that are consistent with a pTMD clinical examination among patients who are seeking care and assigned to the different clusters. METHODS This cross-sectional study used data from the medical records of patients attending Duke Innovative Pain Therapies between August 2017 and April 2021 who received a pTMD diagnosis (i.e., myalgia) and consented to have their data used for research. Data included orofacial and pain-related measures, dental features, and psychological measures. We used the Rapid OPPERA Algorithm to assign clusters to patients and multinomial regression to determine the likelihood (odds ratios [OR] and 95% confidence intervals [CI]) of being assigned to the pain sensitive or global symptoms cluster attributed to each measure. RESULTS In total, 131 patients were included in this study and assigned a cluster: adaptive (n = 54, 41.2%), pain sensitive (n = 49, 37.4%), and global symptoms (n = 28, 21.4%). The PS cluster displayed greater numbers of temporomandibular joint sites (OR, 1.29; 95% CI, 1.01 to 1.65) and masticatory (1.48; 1.19 to 1.83) and cervical (1.23; 1.09 to 1.39) muscles with pain evoked by palpation. The GS cluster displayed greater scores of pain catastrophizing (1.04; 1.01 to 1.06) and perceived stress (1.23; 1.03 to 1.46) and was more likely to report persistent pain (16.23; 1.92 to 137.1) of higher impact (1.43; 1.14 to 1.80). CONCLUSION Our findings support that care-seeking patients with pTMDs who are assigned to the GS cluster display a poorer psychological profile, even though those assigned to the PS cluster display more measures consistent with orofacial pain. Findings also establish the PS cluster as a group that does not display psychological comorbidities despite being hypersensitive. KNOWLEDGE TRANSFER STATEMENT This study informs clinicians that patients seeking care for painful temporomandibular disorders, in specific cases of myalgia, can be classified into 1 of 3 groups that display unique profiles of symptoms. Most importantly, it emphasizes the importance of examining patients with painful temporomandibular disorders in a holistic manner that includes assessing symptoms of psychological distress. Patients with greater psychological distress will likely benefit from multidisciplinary treatment strategies that may include psychological treatments.
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Affiliation(s)
- F.S. Al-Hamed
- Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montreal, Canada
- The Alan Edwards Centre for Research on Pain, McGill University, Montreal, Canada
- College of Dental Medicine, QU Health, Qatar University, Doha, Qatar
| | - A.A. Alonso
- Department of Anesthesiology and Center for Translational Pain Medicine, Duke University, Durham, NC, USA
| | - D. Vivaldi
- Department of Anesthesiology and Center for Translational Pain Medicine, Duke University, Durham, NC, USA
| | - S.B. Smith
- Department of Anesthesiology and Center for Translational Pain Medicine, Duke University, Durham, NC, USA
| | - C. B. Meloto
- Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montreal, Canada
- The Alan Edwards Centre for Research on Pain, McGill University, Montreal, Canada
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Hassan S, Nesovic K, Babineau J, Furlan AD, Kumbhare D, Carlesso LC. Identifying chronic low back pain phenotypic domains and characteristics accounting for individual variation: a systematic review. Pain 2023; 164:2148-2190. [PMID: 37027149 DOI: 10.1097/j.pain.0000000000002911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 02/27/2023] [Indexed: 04/08/2023]
Abstract
ABSTRACT Interpatient variability is frequently observed among individuals with chronic low back pain (cLBP). This review aimed at identifying phenotypic domains and characteristics that account for interpatient variability in cLBP. We searched MEDLINE ALL (through Ovid), Embase Classic and EMBASE (through Ovid), Scopus, and CINAHL Complete (through EBSCOhost) databases. Studies that aimed to identify or predict cLBP different phenotypes were included. We excluded studies that focused on specific treatments. The methodological quality was assessed using an adaptation of the Downs and Black tool. Forty-three studies were included. Although the patient and pain-related characteristics used to identify phenotypes varied considerably across studies, the following were among the most identified phenotypic domains and characteristics that account for interpatient variability in cLBP: pain-related characteristics (including location, severity, qualities, and duration) and pain impact (including disability, sleep, and fatigue), psychological domains (including anxiety and depression), behavioral domains (including coping, somatization, fear avoidance, and catastrophizing), social domains (including employment and social support), and sensory profiling (including pain sensitivity and sensitization). Despite these findings, our review showed that the evidence on pain phenotyping still requires further investigation. The assessment of the methodological quality revealed several limitations. We recommend adopting a standard methodology to enhance the generalizability of the results and the implementation of a comprehensive and feasible assessment framework to facilitate personalized treatments in clinical settings.
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Affiliation(s)
- Samah Hassan
- Institute of Education Research (TIER), University Health Network, Toronto, ON, Canada
| | - Karlo Nesovic
- KITE Research Institute, Toronto Rehabilitation Institute, University Health Network, Toronto, ON, Canada
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON, Canada
| | - Jessica Babineau
- Institute of Education Research (TIER), University Health Network, Toronto, ON, Canada
- Library and Information Services, University Health Network, Toronto, ON, Canada
| | - Andrea D Furlan
- KITE Research Institute, Toronto Rehabilitation Institute, University Health Network, Toronto, ON, Canada
- Department of Medicine, University of Toronto, Toronto, ON, Canada
| | - Dinesh Kumbhare
- KITE Research Institute, Toronto Rehabilitation Institute, University Health Network, Toronto, ON, Canada
- Institute of Biomedical Engineering, University of Toronto, Toronto, ON, Canada
- Department of Medicine, University of Toronto, Toronto, ON, Canada
| | - Lisa C Carlesso
- School of Rehabilitation Science, McMaster University, Hamilton, ON, Canada
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McCracken LM. Personalized pain management: Is it time for process-based therapy for particular people with chronic pain? Eur J Pain 2023; 27:1044-1055. [PMID: 36755478 DOI: 10.1002/ejp.2091] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 02/08/2023] [Indexed: 02/10/2023]
Abstract
BACKGROUND AND OBJECTIVE Psychological treatments for chronic pain have helped many people around the world. They are among the most researched and best evidenced treatments a person can receive when they have persistent, disabling and distressing pain. At the same time, improvements in the effectiveness of these treatments appear to be at a standstill. This may be due to an inherent lack of generalizability from aggregated group data to the individual, limited utility of our current schemes for categorizing people with pain conditions, faced with their inherent heterogeneity, our relatively coarse categories of treatment types and focus on treatment packages rather than individual methods, and our current failures to find adequate predictors of outcome, or to assign people their best-suited treatment methods, based on group data. In this review, it is argued that the development and examination of truly personalized treatment is a next logical step to create progress and improve the results people achieve. METHODS Key research studies pertaining to psychological treatments, treatment outcome, heterogeneity in chronic pain, prediction of treatment outcome, subtyping and treatment tailoring are reviewed. RESULTS AND CONCLUSION It is suggested that development of future treatments for chronic pain ought to incorporate an idiographic, process-based approach, focused on evidence-based mechanisms of change, individually and dynamically addressed, based on contextually sensitive ongoing assessment. Knowledge and practical solutions needed to make process-based therapy for chronic pain happen are discussed. SIGNIFICANCE Psychological approaches to chronic pain have been highly successful in the past but improvement in the effectiveness of these over time is slow to nonexistent. It is argued here that this has happened due to a failure to adequately consider the individual. Future psychological treatments for chronic pain ought to incorporate an idiographic, process-based approach, focused on evidence-based mechanisms of change, individually and dynamically addressed, grounded in ongoing contextually sensitive assessment.
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Affiliation(s)
- Lance M McCracken
- Division of Clinical Psychology, Psychology Department, Uppsala University, Uppsala, Sweden
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8
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Wroclawski C, Mediratta JK, Fillmore WJ. Recent Advances in Temporomandibular Joint Surgery. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:1409. [PMID: 37629699 PMCID: PMC10456345 DOI: 10.3390/medicina59081409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 07/28/2023] [Accepted: 07/29/2023] [Indexed: 08/27/2023]
Abstract
Temporomandibular disorders (TMDs) affect a high percentage of children and adults worldwide. Surgery may be indicated in severe or recalcitrant cases. Several recent advancements in TMD and temporomandibular joint (TMJ) surgery have elevated understanding and the ability to treat affected patients. We discuss recent advances in TMD epidemiology, juvenile idiopathic arthritis (JIA) of the TMJ, and surgical techniques and technologies. Technical advancements have been identified in TMJ arthroscopy, the treatment of TMJ subluxation and dislocation, and extended prosthetic total TMJ reconstruction (eTMJR). Overall, this review provides valuable insights into significant recent advancements in TMJ disorders and their surgical management.
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Affiliation(s)
| | - Jai Kumar Mediratta
- Resident, Oral and Maxillofacial Surgery, Mayo Clinic, Rochester, MN 55905, USA
| | - W. Jonathan Fillmore
- Consultant, Oral and Maxillofacial Surgery, Mayo Clinic, Rochester, MN 55905, USA
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9
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Wilson AT, Riley JL, Bishop MD, Beneciuk JM, Cruz-Almeida Y, Markut K, Redd C, LeBlond N, Pham PH, Shirey D, Bialosky JE. Pain phenotyping and investigation of outcomes in physical therapy: An exploratory study in patients with low back pain. PLoS One 2023; 18:e0281517. [PMID: 36787322 PMCID: PMC9928110 DOI: 10.1371/journal.pone.0281517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 01/25/2023] [Indexed: 02/15/2023] Open
Abstract
Phenotypes have been proposed as a method of characterizing subgroups based on biopsychosocial factors to identify responders to analgesic treatments. This study aimed to, first, confirm phenotypes in patients with low back pain receiving physical therapy based on an a priori set of factors used to derive subgroups in other pain populations. Second, an exploratory analysis examined if phenotypes differentiated pain and disability outcomes at four weeks of physical therapy. Fifty-five participants completed psychological questionnaires and pressure pain threshold (PPT). Somatization, anxiety, and depression domains of the Symptom-Checklist-90-Revised, and PPT, were entered into a hierarchical agglomerative cluster analysis with Ward's method to identify phenotypes. Repeated measures ANOVAs assessed pain ratings and disability by phenotype at four weeks. Three clusters emerged: 1) high emotional distress and pain sensitivity (n = 10), 2) low emotional distress (n = 34), 3) low pain sensitivity (n = 11). As an exploratory study, clusters did not differentiate pain ratings or disability after four weeks of physical therapy (p's>0.05). However, trends were observed as magnitude of change for pain varied by phenotype. This supports the characterization of homogenous subgroups based on a protocol conducted in the clinical setting with varying effect sizes noted by phenotype for short-term changes in pain. As an exploratory study, future studies should aim to repeat this trial in a larger sample of patients.
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Affiliation(s)
- Abigail T. Wilson
- School of Kinesiology and Rehabilitation Sciences, College of Health Professions and Sciences, University of Central Florida, Orlando, Florida, United States of America
- * E-mail:
| | - Joseph L. Riley
- Department of Community Dentistry and Behavioral Science, University of Florida, Gainesville, Florida, United States of America
- Pain Research & Intervention Center of Excellence, University of Florida, Gainesville, Florida, United States of America
| | - Mark D. Bishop
- University of Florida Department of Physical Therapy, Gainesville, Florida, United States of America
| | - Jason M. Beneciuk
- University of Florida Department of Physical Therapy, Gainesville, Florida, United States of America
- Clinical Research Center, Brooks Rehabilitation, Jacksonville, Florida, United States of America
| | - Yenisel Cruz-Almeida
- Department of Community Dentistry and Behavioral Science, University of Florida, Gainesville, Florida, United States of America
- Pain Research & Intervention Center of Excellence, University of Florida, Gainesville, Florida, United States of America
| | - Keri Markut
- University of Florida Health Rehab Center-Orthopedic and Sports Medicine Institute, Gainesville, Florida, United States of America
| | - Charlotte Redd
- University of Florida Health Rehab Center-Orthopedic and Sports Medicine Institute, Gainesville, Florida, United States of America
| | - Nicholas LeBlond
- Duke University Health System Durham, North Carolina, United States of America
| | - Patrick H. Pham
- Brooks Rehabilitation, Jacksonville, Florida, United States of America
| | - David Shirey
- Brooks Rehabilitation, Jacksonville, Florida, United States of America
| | - Joel E. Bialosky
- University of Florida Department of Physical Therapy, Gainesville, Florida, United States of America
- Clinical Research Center, Brooks Rehabilitation, Jacksonville, Florida, United States of America
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10
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Characterizing mechanism-based pain phenotypes in patients with chronic pancreatitis: a cross-sectional analysis of the PROspective Evaluation of Chronic Pancreatitis for EpidEmiologic and Translational StuDies. Pain 2023; 164:375-384. [PMID: 36149018 PMCID: PMC9726990 DOI: 10.1097/j.pain.0000000000002710] [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: 03/16/2022] [Accepted: 05/31/2022] [Indexed: 02/06/2023]
Abstract
ABSTRACT Pain is common in chronic pancreatitis (CP) and profoundly reduces quality of life (QoL). Multiple underlying mechanisms contribute to a heterogenous pain experience and reduce efficacy of pain management. This study was designed to characterize the distribution of mechanism-based pain phenotypes in painful CP. The data analyzed were collected as part of the PROspective Evaluation of Chronic Pancreatitis for EpidEmiologic and Translational StuDies, an NCI/NIDDK-funded longitudinal study of the natural history of CP. The PROspective Evaluation of Chronic pancreatitis for EpidEmiologic and translational stuDies includes patient-reported outcome (PRO) measures of pain, medication use, global health, and QoL. Of subjects (N = 681) with CP, 80% experienced abdominal pain within the year before enrollment. Subjects who experienced pain in the week before enrollment (N = 391) completed PROMIS Neuropathic and Nociceptive Pain Quality instruments which were then used to classify them by pain type: 40% had nociceptive, 5% had neuropathic-like, and 32% had both types of pain. The prevalence of having both types of pain was higher among women and subjects with diabetes mellitus, whereas nociceptive-only pain was more prevalent among men and those with pancreatic duct stricture. Other factors, including pain medication use and healthcare utilization, did not differ between groups based on pain type. Subjects in the Both group had significantly worse health and QoL scores relative to those with nociceptive-only pain, suggesting that using psychosocial pain surveys may be useful for understanding pain subtypes in patients with CP. Additional research is needed to identify biochemical and biophysical signatures that may associate with and predict responses to mechanism-specific interventions.
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Edwards RR, Schreiber KL, Dworkin RH, Turk DC, Baron R, Freeman R, Jensen TS, Latremoliere A, Markman JD, Rice ASC, Rowbotham M, Staud R, Tate S, Woolf CJ, Andrews NA, Carr DB, Colloca L, Cosma-Roman D, Cowan P, Diatchenko L, Farrar J, Gewandter JS, Gilron I, Kerns RD, Marchand S, Niebler G, Patel KV, Simon LS, Tockarshewsky T, Vanhove GF, Vardeh D, Walco GA, Wasan AD, Wesselmann U. Optimizing and Accelerating the Development of Precision Pain Treatments for Chronic Pain: IMMPACT Review and Recommendations. THE JOURNAL OF PAIN 2023; 24:204-225. [PMID: 36198371 PMCID: PMC10868532 DOI: 10.1016/j.jpain.2022.08.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 08/01/2022] [Accepted: 08/17/2022] [Indexed: 11/06/2022]
Abstract
Large variability in the individual response to even the most-efficacious pain treatments is observed clinically, which has led to calls for a more personalized, tailored approach to treating patients with pain (ie, "precision pain medicine"). Precision pain medicine, currently an aspirational goal, would consist of empirically based algorithms that determine the optimal treatments, or treatment combinations, for specific patients (ie, targeting the right treatment, in the right dose, to the right patient, at the right time). Answering this question of "what works for whom" will certainly improve the clinical care of patients with pain. It may also support the success of novel drug development in pain, making it easier to identify novel treatments that work for certain patients and more accurately identify the magnitude of the treatment effect for those subgroups. Significant preliminary work has been done in this area, and analgesic trials are beginning to utilize precision pain medicine approaches such as stratified allocation on the basis of prespecified patient phenotypes using assessment methodologies such as quantitative sensory testing. Current major challenges within the field include: 1) identifying optimal measurement approaches to assessing patient characteristics that are most robustly and consistently predictive of inter-patient variation in specific analgesic treatment outcomes, 2) designing clinical trials that can identify treatment-by-phenotype interactions, and 3) selecting the most promising therapeutics to be tested in this way. This review surveys the current state of precision pain medicine, with a focus on drug treatments (which have been most-studied in a precision pain medicine context). It further presents a set of evidence-based recommendations for accelerating the application of precision pain methods in chronic pain research. PERSPECTIVE: Given the considerable variability in treatment outcomes for chronic pain, progress in precision pain treatment is critical for the field. An array of phenotypes and mechanisms contribute to chronic pain; this review summarizes current knowledge regarding which treatments are most effective for patients with specific biopsychosocial characteristics.
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Affiliation(s)
| | | | | | - Dennis C Turk
- Department of Anesthesiology and Pain Medicine, University of Washington, Seattle, Washington
| | - Ralf Baron
- Division of Neurological Pain Research and Therapy, Department of Neurology, University Hospital Schleswig-Holstein, Arnold-Heller-Straße 3, House D, 24105 Kiel, Germany
| | - Roy Freeman
- Harvard Medical School, Boston, Massachusetts
| | | | | | | | | | | | | | | | | | - Nick A Andrews
- Salk Institute for Biological Studies, San Diego, California
| | | | | | | | - Penney Cowan
- American Chronic Pain Association, Rocklin, California
| | - Luda Diatchenko
- Department of Anesthesia and Faculty of Dentistry, McGill University, Montreal, California
| | - John Farrar
- University of Pennsylvania, Philadelphia, Pennsylvania
| | | | | | - Robert D Kerns
- Yale University, Departments of Psychiatry, Neurology, and Psychology, New Haven, Connecticut
| | | | | | - Kushang V Patel
- Department of Anesthesiology and Pain Medicine, University of Washington, Seattle, Washington
| | | | | | | | | | - Gary A Walco
- Department of Anesthesiology and Pain Medicine, University of Washington, Seattle, Washington
| | - Ajay D Wasan
- University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Ursula Wesselmann
- Department of Anesthesiology/Division of Pain Medicine, Neurology and Psychology, The University of Alabama at Birmingham, Birmingham, Alabama
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12
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Wilson JM, Colebaugh CA, Flowers KM, Overstreet D, Edwards RR, Maixner W, Smith SB, Schreiber KL. Applying the Rapid OPPERA Algorithm to Predict Persistent Pain Outcomes Among a Cohort of Women Undergoing Breast Cancer Surgery. THE JOURNAL OF PAIN 2022; 23:2003-2012. [PMID: 35963491 PMCID: PMC9729400 DOI: 10.1016/j.jpain.2022.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 07/27/2022] [Accepted: 07/31/2022] [Indexed: 01/04/2023]
Abstract
Persistent postmastectomy pain after breast surgery is variable in duration and severity across patients, due in part to interindividual variability in pain processing. The Rapid OPPERA Algorithm (ROPA) empirically identified 3 clusters of patients with different risk of chronic pain based on 4 key psychophysical and psychosocial characteristics. We aimed to test this type of group-based clustering within in a perioperative cohort undergoing breast surgery to investigate differences in postsurgical pain outcomes. Women (N = 228) scheduled for breast cancer surgery were prospectively enrolled in a longitudinal observational study. Pressure pain threshold (PPT), anxiety, depression, and somatization were assessed preoperatively. At 2-weeks, 3, 6, and 12-months after surgery, patients reported surgical area pain severity, impact of pain on cognitive/emotional and physical functioning, and pain catastrophizing. The ROPA clustering, which used patients' preoperative anxiety, depression, somatization, and PPT scores, assigned patients to 3 groups: Adaptive (low psychosocial scores, high PPT), Pain Sensitive (moderate psychosocial scores, low PPT), and Global Symptoms (high psychosocial scores, moderate PPT). The Global Symptoms cluster, compared to other clusters, reported significantly worse persistent pain outcomes following surgery. Findings suggest that patient characteristic-based clustering algorithms, like ROPA, may generalize across diverse diagnoses and clinical settings, indicating the importance of "person type" in understanding pain variability. PERSPECTIVE: This article presents the practical translation of a previously developed patient clustering solution, based within a chronic pain cohort, to a perioperative cohort of women undergoing breast cancer surgery. Such preoperative characterization could potentially help clinicians apply personalized interventions based on predictions concerning postsurgical pain.
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Affiliation(s)
- Jenna M Wilson
- Department of Anesthesiology, Perioperative, and Pain Medicine, Brigham & Women's Hospital, Harvard Medical School, Boston, Massachusetts.
| | - Carin A Colebaugh
- Department of Anesthesiology, Perioperative, and Pain Medicine, Brigham & Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - K Mikayla Flowers
- Department of Anesthesiology, Perioperative, and Pain Medicine, Brigham & Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Demario Overstreet
- Department of Anesthesiology, Perioperative, and Pain Medicine, Brigham & Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Robert R Edwards
- Department of Anesthesiology, Perioperative, and Pain Medicine, Brigham & Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - William Maixner
- Department of Anesthesiology, Duke University, Durham, North Carolina
| | - Shad B Smith
- Department of Anesthesiology, Duke University, Durham, North Carolina
| | - Kristin L Schreiber
- Department of Anesthesiology, Perioperative, and Pain Medicine, Brigham & Women's Hospital, Harvard Medical School, Boston, Massachusetts
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13
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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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14
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Chen J, Barandouzi ZA, Lee J, Xu W, Feng B, Starkweather A, Cong X. Psychosocial and Sensory Factors Contribute to Self-Reported Pain and Quality of Life in Young Adults with Irritable Bowel Syndrome. Pain Manag Nurs 2022; 23:646-654. [PMID: 35074280 PMCID: PMC9300766 DOI: 10.1016/j.pmn.2021.12.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 11/16/2021] [Accepted: 12/24/2021] [Indexed: 12/17/2022]
Abstract
AIMS Psychosocial and sensory factors, including anxiety, depression, and pressure pain threshold have been used to cluster chronic symptoms in irritable bowel syndrome (IBS). This study examined the contribution of psychosocial sensory factors on pain interference and quality of life (QOL) in this population. DESIGN We performed a cross-sectional analysis of baseline data from a randomized controlled trial. SETTINGS Two gastrointestinal clinics, general communities, and two large campuses of a public university in the Northeastern United States. PARTICIPANTS/SUBJECTS Eighty young adults with IBS aged 21 ± 2.57 years (76.25% female). METHODS Demographic and psychosocial factors including anxiety, depression, fatigue, cognition or general concerns, sleep disturbance, self-efficacy, coping, and food intake were measured as independent variables. Quantitative sensory testing was conducted to measure mechanical, thermal, and pressure pain thresholds. Self-reported pain measured by the brief pain inventory (BPI) and IBS-QOL were assessed as the outcome variables. Regression analysis and mediation analysis were conducted to determine the associated factors of IBS pain and QOL. RESULTS Age, sex, and psychosocial factors including coping, self-efficacy, alcohol intake, mechanical pain sensitivity, and cold pain threshold were significantly associated with pain interference (all p < 0.05). Coping, and self-efficacy were significantly associated with IBS-QOL (all p < 0.05). In the mediation analysis, coping catastrophizing and self-efficacy were indirectly associated with IBS-QOL mediated by fatigue. CONCLUSIONS Psychosocial factors including coping and self-efficacy, and quantitative sensory testing factors significantly correlate with self-reported pain and QOL among young adults with IBS. This preliminary research calls for further interventional studies that target personalized psychosocial and quantitative sensory factors to improve pain management and quality of life in IBS patients.
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Affiliation(s)
- Jie Chen
- University of Connecticut, School of Nursing, Storrs, Connecticut; Department of Pain and Translational Symptom Science, University of Maryland School of Nursing, Baltimore, Maryland
| | - Zahra Amirkhanzadeh Barandouzi
- University of Connecticut, School of Nursing, Storrs, Connecticut; School of Nursing, Emory University, Atlanta, Georgia
| | - Joochul Lee
- Department of Statistics, University of Connecticut, Storrs, Connecticut
| | - Wanli Xu
- University of Connecticut, School of Nursing, Storrs, Connecticut
| | - Bin Feng
- Department of Biomedical Engineering, University of Connecticut, Storrs, Connecticut
| | | | - Xiaomei Cong
- University of Connecticut, School of Nursing, Storrs, Connecticut.
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15
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Nickel J, Gonzalez Y, Wu Y, Liu Y, Liu H, Iwasaki L. Chronic Pain-Related Jaw Muscle Motor Load and Sensory Processing. J Dent Res 2022; 101:1165-1171. [PMID: 35708459 PMCID: PMC9403723 DOI: 10.1177/00220345221099885] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Chronic pain associated with temporomandibular disorders (TMDs) may reflect muscle mechanoreceptor afferent barrage and dysregulated sensory processing. This observational study tested for associations between Characteristic Pain Intensity (CPI), physical symptoms (Patient Health Questionnaire-15 [PHQ-15]), and cumulative jaw muscle motor load (mV*s). In accordance with institutional review board oversight and Strengthening the Reporting of Observational Studies in Epidemiology guidelines, adult subjects gave informed consent and were identified via Diagnostic Criteria for TMD (DC-TMD) examination and research protocols. Subjects were assigned to ±Pain groups using DC-TMD criteria for myalgia. CPI scores characterized pain intensity. PHQ-15 scores were surrogate measures of dysregulated sensory processing. Laboratory tests were performed to quantify masseter and temporalis muscle activities (mV) per bite force (N) for each subject. In their natural environments, subjects recorded day- and nighttime electromyography from which cumulative jaw muscle motor loads (mV*s) were determined for activities consistent with bite forces of >1 to ≤2 and >2 to ≤5 N. Data were assessed using univariate analysis of variance, simple effects tests, K-means cluster classification, and 3-dimensional regression analyses. Of 242 individuals screened, 144 enrolled, and 125 with complete data from study protocols, there were 35 females and 15 males for +Pain and 35 females and 40 males for -Pain. Subjects produced 324 daytime and 341 nighttime recordings of average duration 6.9 ± 1.7 and 7.6 ± 1.7 h, respectively. Overall, +Pain compared to -Pain subjects had significantly higher (all P ≤ 0.002) CPI and PHQ-15 scores. Cumulative jaw muscle motor loads showed significant between-subject effects for time, diagnostic group, and sex (all P < 0.003), where motor loads tended to be higher for daytime versus nighttime, +Pain versus -Pain groups, and males versus females. Two clusters were identified, and regression relations showed associations of low-magnitude daytime masseter motor load, PHQ-15, and CPI scores for cluster 1 (n = 105, R2 = 0.44) and cluster 2 (n = 18, R2 = 0.80). Furthermore, these regression relations showed thresholds of motor load and PHQ-15 scores, above which there were nonlinear increases in reported pain.
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Affiliation(s)
- J.C. Nickel
- Department of Orthodontics, School of Dentistry, Oregon Health & Science University, Portland, OR, USA
- Department of Oral Diagnostic Sciences, School of Dental Medicine, University at Buffalo, Buffalo, NY, USA
| | - Y.M. Gonzalez
- Department of Oral Diagnostic Sciences, School of Dental Medicine, University at Buffalo, Buffalo, NY, USA
| | - Y. Wu
- Department of Integrative Biomedical and Diagnostic Sciences, School of Dentistry, Oregon Health & Science University, Portland, OR, USA
| | - Y. Liu
- Department of Biostatistics and Epidemiology, College of Public Health, East Tennessee State University, Johnson City, TN, USA
| | - H. Liu
- Department of Orthodontics, School of Dentistry, Oregon Health & Science University, Portland, OR, USA
| | - L.R. Iwasaki
- Department of Orthodontics, School of Dentistry, Oregon Health & Science University, Portland, OR, USA
- Department of Oral Diagnostic Sciences, School of Dental Medicine, University at Buffalo, Buffalo, NY, USA
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16
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Chen J, Zhang Y, Barandouzi ZA, Xu W, Feng B, Chon K, Santos M, Starkweather A, Cong X. Somatosensory Profiles Differentiate Pain and Psychophysiological Symptoms Among Young Adults With Irritable Bowel Syndrome: A Cluster Analysis. Clin J Pain 2022; 38:492-501. [PMID: 35686579 PMCID: PMC9205184 DOI: 10.1097/ajp.0000000000001046] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 05/10/2022] [Indexed: 11/26/2022]
Abstract
OBJECTIVE The aim of this study was to investigate if somatosensory profiles can differentiate pain and psychophysiological symptoms among young adults with irritable bowel syndrome (IBS). METHODS We performed a cluster analysis of data collected from a randomized clinical trial of 80 IBS patients and 21 age-matched healthy controls (HCs) to stratify pain and symptoms among young adults with IBS by their peripheral sensory profiles. Data of quantitative sensory testing and IBS-related pain and symptoms were collected at baseline and 6-week and 12-week follow-ups. RESULTS Using the K-means method, IBS patients were classified into 2 clusters, the "IBS normal threshold" (IBS-NT) and the "IBS increased threshold" (IBS-IT). The IBS-NT cluster had a similar pain threshold as the HCs, and the IBS-IT cluster had an increased threshold of somatic pain perception (lower cold pain threshold, higher heat pain threshold, and higher pressure pain threshold, all P<0.001) than HCs. Compared with the IBS-NT cluster, the IBS-IT cluster reported higher levels of IBS-related pain intensity, anxiety, fatigue, and sleep disturbance over the 3 visits (all P<0.05). DISCUSSION Young adults with IBS fell into 2 clusters, one with a similar sensory threshold as the HCs and another with an increased pain threshold, who reported higher pain intensity and more severe symptoms. Somatic sensory profiles should be integrated into further personalized self-management intervention among patients with IBS.
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Affiliation(s)
- Jie Chen
- University of Connecticut, School of Nursing, 231 Glenbrook Road, Unit 4026, Storrs, CT 06269-4026
- University of Maryland School of Nursing, Department of Pain and Translational Symptom Science, 655 W. Lombard St., Baltimore, MD 21201
| | - Yiming Zhang
- University of Connecticut, Department of Statistics, 215 Glenbrook Road. U-4120, Storrs, CT 06269-4120
| | - Zahra Amirkhanzadeh Barandouzi
- University of Connecticut, School of Nursing, 231 Glenbrook Road, Unit 4026, Storrs, CT 06269-4026
- Emory University, School of Nursing, 1520 Clifton Rd, Atlanta, GA 30322
| | - Wanli Xu
- University of Connecticut, School of Nursing, 231 Glenbrook Road, Unit 4026, Storrs, CT 06269-4026
| | - Bin Feng
- University of Connecticut, Department of Biomedical Engineering, 260 Glenbrook Road. U-3247, Storrs, CT 06269-3247
| | - Ki Chon
- University of Connecticut, Department of Biomedical Engineering, 260 Glenbrook Road. U-3247, Storrs, CT 06269-3247
| | - Melissa Santos
- Connecticut Children’s Medical Center, Pediatric Obesity Center, 85 Seymour Street, Harford, CT 06106
| | - Angela Starkweather
- University of Connecticut, School of Nursing, 231 Glenbrook Road, Unit 4026, Storrs, CT 06269-4026
| | - Xiaomei Cong
- University of Connecticut, School of Nursing, 231 Glenbrook Road, Unit 4026, Storrs, CT 06269-4026
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17
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Wilson JM, Colebaugh CA, Flowers KM, Edwards RR, Schreiber KL. Profiles of Risk and Resilience in Chronic Pain: Loneliness, Social Support, Mindfulness, and Optimism Coming out of the First Pandemic Year. PAIN MEDICINE 2022; 23:2010-2021. [PMID: 35587150 PMCID: PMC9384018 DOI: 10.1093/pm/pnac079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 04/03/2022] [Accepted: 05/10/2022] [Indexed: 11/17/2022]
Abstract
Objective Individuals experience chronic pain differently, not only because of different clinical diagnoses, but also because of differing degrees of influence from biopsychosocial pain modulators. We aimed to cluster patients with chronic pain into distinct subgroups based on psychosocial characteristics and pain intensity, and we subsequently examined group differences in pain-related interference approximately 1 year later. Methods In this observational, longitudinal study, patients with chronic pain (n = 94) completed validated assessments of psychosocial characteristics and pain intensity at the beginning of COVID-19–related social distancing (April to June 2020). One year later (May to June 2021), patients completed a follow-up survey with assessments of pain interference, loneliness, social support, mindfulness, and optimism. Results A cluster analysis, using psychosocial factors and pain intensity, empirically produced three patient groups: 1) psychosocial predominant (PSP), characterized by high psychosocial distress and average pain intensity; 2) pain intensity predominant (PIP), characterized by average psychosocial distress and high pain intensity; and 3) less elevated symptoms (LES), characterized by low psychosocial distress and low pain intensity. At the 1-year follow-up, patients in the PSP and PIP clusters suffered greater pain interference than patients in the LES cluster, while patients in the PSP cluster also reported greater loneliness and lower mindfulness and optimism. Conclusions An empirical psychosocial-based clustering of patients identified three distinct groups that differed in pain interference. Patients with high psychosocial modulation of pain at the onset of social distancing (the PSP cluster) suffered not only greater pain interference but also greater loneliness and lower levels of mindfulness and optimism, which suggests some potential behavioral targets for this group in the future.
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Affiliation(s)
- Jenna M Wilson
- Correspondence to: Jenna M. Wilson, PhD, Department of Anesthesiology, Perioperative, and Pain Medicine,Brigham and Women’s Hospital, 45 Francis St, Boston, MA 02115, USA. Tel: 7813673972; E-mail:
| | - Carin A Colebaugh
- Department of Anesthesiology, Perioperative, and Pain Medicine, Brigham & Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - K Mikayla Flowers
- Department of Anesthesiology, Perioperative, and Pain Medicine, Brigham & Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Robert R Edwards
- Department of Anesthesiology, Perioperative, and Pain Medicine, Brigham & Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Kristin L Schreiber
- Department of Anesthesiology, Perioperative, and Pain Medicine, Brigham & Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
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18
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Bruehl S, Milne G, Schildcrout J, Shi Y, Anderson S, Shinar A, Polkowski G, Mishra P, Billings FT. Oxidative stress is associated with characteristic features of the dysfunctional chronic pain phenotype. Pain 2022; 163:786-794. [PMID: 34382610 PMCID: PMC8807797 DOI: 10.1097/j.pain.0000000000002429] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 07/26/2021] [Indexed: 11/25/2022]
Abstract
ABSTRACT The dysfunctional chronic pain (Dysfunctional CP) phenotype is an empirically identifiable CP subtype with unclear pathophysiological mechanisms that cuts across specific medical CP diagnoses. This study tested whether the multidimensional pain and psychosocial features that characterize the dysfunctional CP phenotype are associated broadly with elevated oxidative stress (OS). Measures of pain intensity, bodily extent of pain, catastrophizing cognitions, depression, anxiety, sleep disturbance, pain interference, and function were completed by 84 patients with chronic osteoarthritis before undergoing total knee arthroplasty. Blood samples were obtained at the initiation of surgery before incision or tourniquet placement. Plasma levels of F2-isoprostanes and isofurans, the most highly specific measures of in vivo OS, were quantified using gas chromatography/negative ion chemical ionization mass spectrometry. The results indicated that controlling for differences in age, sex, and body mass index, higher overall OS (mean of isoprostanes and isofurans) was associated with significantly (P < 0.05) greater pain intensity, more widespread pain, greater depressive symptoms and pain catastrophizing, higher pain interference, and lower function. OS measures were not significantly associated with sleep disturbance or anxiety levels (P >0.10). The results build on prior case-control findings suggesting that presence of a CP diagnosis is associated with elevated OS, highlighting that it may specifically be individuals displaying characteristics of the dysfunctional CP phenotype who are characterized by elevated OS. Clinical implications of these findings remain to be determined.
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Affiliation(s)
- Stephen Bruehl
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Ginger Milne
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Jonathan Schildcrout
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Yaping Shi
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Sara Anderson
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Andrew Shinar
- Department of Orthopaedic Surgery, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Gregory Polkowski
- Department of Orthopaedic Surgery, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Puneet Mishra
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Frederic T. Billings
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, USA
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19
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Gilam G, Cramer EM, Webber KA, Ziadni MS, Kao MC, Mackey SC. Classifying chronic pain using multidimensional pain-agnostic symptom assessments and clustering analysis. SCIENCE ADVANCES 2021; 7:eabj0320. [PMID: 34516888 PMCID: PMC8442889 DOI: 10.1126/sciadv.abj0320] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 07/19/2021] [Indexed: 05/26/2023]
Abstract
Chronic pain conditions present in various forms, yet all feature symptomatic impairments in physical, mental, and social domains. Rather than assessing symptoms as manifestations of illness, we used them to develop a chronic pain classification system. A cohort of real-world treatment-seeking patients completed a multidimensional patient-reported registry as part of a routine initial evaluation in a multidisciplinary academic pain clinic. We applied hierarchical clustering on a training subset of 11,448 patients using nine pain-agnostic symptoms. We then validated a three-cluster solution reflecting a graded scale of severity across all symptoms and eight independent pain-specific measures in additional subsets of 3817 and 1273 patients. Negative affect–related factors were key determinants of cluster assignment. The smallest subset included follow-up assessments that were predicted by baseline cluster assignment. Findings provide a cost-effective classification system that promises to improve clinical care and alleviate suffering by providing putative markers for personalized diagnosis and prognosis.
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Affiliation(s)
- Gadi Gilam
- Division of Pain Medicine, Stanford University School of Medicine, Palo Alto, CA, USA
| | - Eric M. Cramer
- Division of Pain Medicine, Stanford University School of Medicine, Palo Alto, CA, USA
| | - Kenneth A. Webber
- Division of Pain Medicine, Stanford University School of Medicine, Palo Alto, CA, USA
| | - Maisa S. Ziadni
- Division of Pain Medicine, Stanford University School of Medicine, Palo Alto, CA, USA
| | - Ming-Chih Kao
- Division of Pain Medicine, Stanford University School of Medicine, Palo Alto, CA, USA
| | - Sean C. Mackey
- Division of Pain Medicine, Stanford University School of Medicine, Palo Alto, CA, USA
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