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Lannon EW, Hellman N, Huber FA, Kuhn BL, Sturycz CA, Palit S, Payne MF, Guereca YM, Toledo T, Shadlow JO, Rhudy JL. Exploration of the trait-activation model of pain catastrophizing in Native Americans: results from the Oklahoma Study of Native American pain risk (OK-SNAP). Scand J Pain 2022; 22:587-596. [PMID: 35289511 PMCID: PMC10165978 DOI: 10.1515/sjpain-2021-0174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 02/17/2022] [Indexed: 11/15/2022]
Abstract
OBJECTIVES Native Americans (NAs) have the highest prevalence of chronic pain of any racial/ethnic group. This issue has received little attention from the scientific community. One factor that may contribute to racial pain disparities is pain catastrophizing. Pain catastrophizing is a construct related to negative pain outcomes in persons with/without chronic pain. It has been suggested that the relationship between trait catastrophizing and pain is mediated by situation-specific (state) catastrophizing. The present study has 2 aims: (1) to investigate whether state pain catastrophizing mediates the relationship between trait catastrophizing and experimental pain (e.g., cold, ischemic, heat and electric tolerance), and (2) to investigate whether this relationship is stronger for NAs. METHODS 145 non-Hispanic Whites (NHWs) and 137 NAs completed the study. Bootstrapped indirect effects were calculated for 4 unmoderated and 8 moderated mediation models (4 models with path a moderated and 4 with path b). RESULTS Consistent with trait-activation theory, significant indirect effects indicated a tendency for trait catastrophizing to be associated with greater state catastrophizing which in turn is associated with reduced pain tolerance during tonic cold (a × b=-0.158) and ischemia stimuli (a × b=-0.126), but not during phasic electric and heat stimuli. Moderation was only noted for the prediction of cold tolerance (path a). Contrary to expectations, the indirect path was stronger for NHWs (a × b for NHW=-.142). CONCLUSIONS Together, these findings suggest that state catastrophizing mediates the relationship between trait catastrophizing and some measures of pain tolerance but this indirect effect was non-significant for NAs.
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Affiliation(s)
- Edward W Lannon
- Department of Psychology, The University of Tulsa, Tulsa, OK, USA
- Stanford University, 450 Serra Mall, Stanford, Stanford, CA94305, USA
| | - Natalie Hellman
- Department of Psychology, The University of Tulsa, Tulsa, OK, USA
| | | | - Bethany L Kuhn
- Department of Psychology, The University of Tulsa, Tulsa, OK, USA
| | | | - Shreela Palit
- University of Florida, Pain Research and Intervention Center of Excellence, Gainesville, FL, USA
| | - Michael F Payne
- Department of Psychology, The University of Tulsa, Tulsa, OK, USA
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Division of Behavioral Medicine & Clinical Psychology, Cincinnati, OH, USA
| | - Yvette M Guereca
- Department of Psychology, The University of Tulsa, Tulsa, OK, USA
| | - Tyler Toledo
- Department of Psychology, The University of Tulsa, Tulsa, OK, USA
| | - Joanna O Shadlow
- Department of Psychology, The University of Tulsa, Tulsa, OK, USA
| | - Jamie L Rhudy
- Department of Psychology, The University of Tulsa, Tulsa, OK, USA
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Rhudy JL, Huber FA, Toledo TA, Kell PA, Street EN, Shadlow JO. Psychosocial and cardiometabolic predictors of chronic pain onset in Native Americans: serial mediation analyses of 2-year prospective data from the Oklahoma Study of Native American Pain Risk. Pain 2022; 163:e654-e674. [PMID: 34433767 PMCID: PMC8866534 DOI: 10.1097/j.pain.0000000000002458] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 07/19/2021] [Indexed: 11/25/2022]
Abstract
ABSTRACT Chronic pain results in considerable suffering, as well as significant economic and societal costs. Previous evidence suggests that Native Americans (NAs) have higher rates of chronic pain than other U.S. racial or ethnic groups, but the mechanisms contributing to this pain disparity are poorly understood. The Oklahoma Study of Native American Pain Risk was developed to address this issue and recruited healthy, pain-free NAs and non-Hispanic Whites. Cross-sectional analyses identified several measures of adversity (eg, trauma and discrimination), cognitive-affective factors (perceived stress and pain-related anxiety/catastrophizing), and cardiometabolic factors (eg, body mass index, blood pressure, and heart rate variability) that were associated with pronociceptive processes (eg, central sensitization, descending inhibition, and hyperalgesia). Every 6-months after enrollment, eligible participants (N = 277) were recontacted and assessed for the onset of chronic pain. This study examines predictors of chronic pain onset in the 222 participants (80%) who responded over the first 2 years. The results show that NAs developed chronic pain at a higher rate than non-Hispanic Whites (OR = 2.902, P < 0.05), even after controlling for age, sex, income, and education. Moreover, serial mediation models identified several potential pathways to chronic pain onset within the NA group. These paths included perceived discrimination, psychological stress, pain-related anxiety, a composite measure of cardiometabolic risk, and impaired descending inhibition of spinal nociception (assessed from conditioned pain modulation of the nociceptive flexion reflex). These results provide the first prospective evidence for a pain disparity in NAs that seems to be promoted by psychosocial, cardiometabolic, and pronociceptive mechanisms.
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Affiliation(s)
- Jamie L. Rhudy
- The University of Tulsa, Department of Psychology, Tulsa, OK
| | | | - Tyler A. Toledo
- The University of Tulsa, Department of Psychology, Tulsa, OK
| | - Parker A. Kell
- The University of Tulsa, Department of Psychology, Tulsa, OK
| | - Erin N. Street
- The University of Tulsa, Department of Psychology, Tulsa, OK
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Rhudy JL, Kuhn BL, Demuth MJ, Huber FA, Hellman N, Toledo TA, Lannon EW, Palit S, Payne MF, Sturycz CA, Kell PA, Guereca YM, Street EN, Shadlow JO. Are Cardiometabolic Markers of Allostatic Load Associated With Pronociceptive Processes in Native Americans?: A Structural Equation Modeling Analysis From the Oklahoma Study of Native American Pain Risk. THE JOURNAL OF PAIN 2021; 22:1429-1451. [PMID: 34033965 PMCID: PMC8578174 DOI: 10.1016/j.jpain.2021.04.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 04/07/2021] [Accepted: 04/26/2021] [Indexed: 10/21/2022]
Abstract
Native Americans (NAs) experience higher rates of chronic pain than the general U.S. population, but the risk factors for this pain disparity are unknown. NAs also experience high rates of stressors and cardiovascular and metabolic health disparities (eg, diabetes, cardiovascular disease) consistent with allostatic load (stress-related wear-and-tear on homeostatic systems). Given that allostatic load is associated with chronic pain, then allostatic load may contribute to their pain disparity. Data from 302 healthy, pain-free men and women (153 NAs, 149 non-Hispanic Whites [NHW]) were analyzed using structural equation modeling to determine whether cardiometabolic allostatic load (body mass index, blood pressure, heart rate variability) mediated the relationship between NA ethnicity and experimental measures of pronociceptive processes: temporal summation of pain (TS-pain) and the nociceptive flexion reflex (TS-NFR), conditioned pain modulation of pain (CPM-pain) and NFR (CPM-NFR), and pain tolerance. Results indicated that NAs experienced greater cardiometabolic allostatic load that was related to enhanced TS-NFR and impaired CPM-NFR. Cardiometabolic allostatic load was unrelated to measures of pain perception (CPM-pain, TS-pain, pain sensitivity). This suggests cardiometabolic allostatic load may promote spinal sensitization in healthy NAs, that is not concomitant with pain sensitization, perhaps representing a unique pain risk phenotype in NAs. PERSPECTIVE: Healthy, pain-free Native Americans experienced greater cardiometabolic allostatic load that was associated with a pronociceptive pain phenotype indicative of latent spinal sensitization (ie, spinal sensitization not associated with hyperalgesia). This latent spinal sensitization could represent a pain risk phenotype for this population.
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Affiliation(s)
- Jamie L Rhudy
- Department of Psychology, The University of Tulsa, Tulsa, Oklahoma.
| | - Bethany L Kuhn
- Department of Psychology, The University of Tulsa, Tulsa, Oklahoma
| | - Mara J Demuth
- Department of Psychology, The University of Tulsa, Tulsa, Oklahoma
| | | | - Natalie Hellman
- Department of Psychology, The University of Tulsa, Tulsa, Oklahoma
| | - Tyler A Toledo
- 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; Pain Research and Intervention Center of Excellence, University of Florida, Gainesville, Florida
| | - Michael F Payne
- Department of Psychology, The University of Tulsa, Tulsa, Oklahoma; Cincinnati Children's Hospital Medical Center, Department of Pediatrics, Division of Behavioral Medicine & Clinical Psychology, Cincinnati, Ohio
| | | | - Parker A Kell
- Department of Psychology, The University of Tulsa, Tulsa, Oklahoma
| | - Yvette M Guereca
- Department of Psychology, The University of Tulsa, Tulsa, Oklahoma
| | - Erin N Street
- Department of Psychology, The University of Tulsa, Tulsa, Oklahoma
| | - Joanna O Shadlow
- Department of Psychology, The University of Tulsa, Tulsa, Oklahoma
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Ross EN, Toledo TA, Huber F, Kell PA, Hellman N, Shadlow JO, Rhudy JL. The role of self-evaluated pain sensitivity as a mediator of objectively measured pain tolerance in Native Americans: findings from the Oklahoma Study of Native American Pain Risk (OK-SNAP). J Behav Med 2021; 45:272-284. [PMID: 34545536 DOI: 10.1007/s10865-021-00257-3] [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: 08/19/2020] [Accepted: 09/06/2021] [Indexed: 11/24/2022]
Abstract
Native Americans (NAs) are at increased risk for chronic pain. One mechanism contributing to this pain disparity could be personal pain beliefs, which may influence actual pain sensitivity. Thus, we examined whether self-evaluated pain sensitivity (SEPS) mediates the relationship between ethnicity [NAs vs. non-Hispanic Whites (NHWs)] and objectively-measured pain tolerance, and whether catastrophic thinking and pain-related anxiety influence these pain beliefs. 232 healthy, pain-free NAs and NHWs completed questionnaires measuring SEPS, catastrophizing, and anxiety. Objective pain tolerance was also assessed. Results suggested: (1) NAs reported higher levels of SEPS, catastrophizing, and anxiety, (2) catastrophizing may have enhanced anxiety and both catastrophizing and anxiety were associated with higher SEPS, and (3) anxiety and SEPS were associated with lower pain tolerance. A significant bootstrapped mediation analysis suggested NAs experienced higher pain-related anxiety, which may have promoted higher SEPS, that in turn reduced pain tolerance. Longitudinal research is needed to confirm this.
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Affiliation(s)
- Erin N Ross
- Department of Psychology, The University of Tulsa, 800 South Tucker Drive, Tulsa, OK, 74104, USA
| | - Tyler A Toledo
- Department of Psychology, The University of Tulsa, 800 South Tucker Drive, Tulsa, OK, 74104, USA
| | - Felicitas Huber
- Department of Psychology, The University of Tulsa, 800 South Tucker Drive, Tulsa, OK, 74104, USA
| | - Parker A Kell
- Department of Psychology, The University of Tulsa, 800 South Tucker Drive, Tulsa, OK, 74104, USA
| | - Natalie Hellman
- Department of Psychology, The University of Tulsa, 800 South Tucker Drive, Tulsa, OK, 74104, USA
| | - Joanna O Shadlow
- Department of Psychology, The University of Tulsa, 800 South Tucker Drive, Tulsa, OK, 74104, USA
| | - Jamie L Rhudy
- Department of Psychology, The University of Tulsa, 800 South Tucker Drive, Tulsa, OK, 74104, USA.
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Rhudy JL, Lannon EW, Kuhn BL, Palit S, Payne MF, Sturycz CA, Hellman N, Güereca YM, Toledo TA, Huber F, Demuth MJ, Hahn BJ, Chaney JM, Shadlow JO. Assessing peripheral fibers, pain sensitivity, central sensitization, and descending inhibition in Native Americans: main findings from the Oklahoma Study of Native American Pain Risk. Pain 2020; 161:388-404. [PMID: 31977838 PMCID: PMC7001897 DOI: 10.1097/j.pain.0000000000001715] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Native Americans (NAs) have a higher prevalence of chronic pain than other U.S. racial/ethnic groups, but there have been few attempts to understand the mechanisms of this pain disparity. This study used a comprehensive battery of laboratory tasks to assess peripheral fiber function (cool/warm detection thresholds), pain sensitivity (eg, thresholds/tolerances), central sensitization (eg, temporal summation), and pain inhibition (conditioned pain modulation) in healthy, pain-free adults (N = 155 NAs, N = 150 non-Hispanic Whites [NHWs]). Multiple pain stimulus modalities were used (eg, cold, heat, pressure, ischemic, and electric), and subjective (eg, pain ratings and pain tolerance) and physiological (eg, nociceptive flexion reflex) outcomes were measured. There were no group differences on any measure, except that NAs had lower cold-pressor pain thresholds and tolerances, indicating greater pain sensitivity than NHWs. These findings suggest that there are no group differences between healthy NAs and NHWs on peripheral fiber function, central sensitization, or central pain inhibition, but NAs may have greater sensitivity to cold pain. Future studies are needed to examine potential within-group factors that might contribute to NA pain risk.
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Affiliation(s)
- Jamie L. Rhudy
- The University of Tulsa, Department of Psychology, Tulsa, OK
| | | | - Bethany L. Kuhn
- The University of Tulsa, Department of Psychology, Tulsa, OK
| | - Shreela Palit
- The University of Tulsa, Department of Psychology, Tulsa, OK
- University of Florida, Pain Research and Intervention Center of Excellence, Gainesville, FL
| | - Michael F. Payne
- The University of Tulsa, Department of Psychology, Tulsa, OK
- Cincinnati Children’s Hospital Medical Center, Department of Pediatrics, Division of Behavioral Medicine & Clinical Psychology, Cincinnati, OH
| | | | - Natalie Hellman
- The University of Tulsa, Department of Psychology, Tulsa, OK
| | | | - Tyler A. Toledo
- The University of Tulsa, Department of Psychology, Tulsa, OK
| | - Felicitas Huber
- The University of Tulsa, Department of Psychology, Tulsa, OK
| | - Mara J. Demuth
- The University of Tulsa, Department of Psychology, Tulsa, OK
| | | | - John M. Chaney
- Oklahoma State University, Department of Psychology, Stillwater, OK
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Rhudy JL, Huber F, Kuhn BL, Lannon EW, Palit S, Payne MF, Hellman N, Sturycz CA, Güereca YM, Toledo TA, Demuth MJ, Hahn BJ, Shadlow JO. Pain-related anxiety promotes pronociceptive processes in Native Americans: bootstrapped mediation analyses from the Oklahoma Study of Native American Pain Risk. Pain Rep 2020; 5:e808. [PMID: 32072102 PMCID: PMC7004502 DOI: 10.1097/pr9.0000000000000808] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Revised: 12/11/2019] [Accepted: 12/14/2019] [Indexed: 01/07/2023] Open
Abstract
INTRODUCTION Evidence suggests Native Americans (NAs) experience higher rates of chronic pain than the general US population, but the mechanisms contributing to this disparity are poorly understood. Recently, we conducted a study of healthy, pain-free NAs (n = 155), and non-Hispanic whites (NHWs, n = 150) to address this issue and found little evidence that NAs and NHWs differ in pain processing (assessed from multiple quantitative sensory tests). However, NAs reported higher levels of pain-related anxiety during many of the tasks. OBJECTIVE The current study is a secondary analysis of those data to examine whether pain-related anxiety could promote pronociceptive processes in NAs to put them at chronic pain risk. METHODS Bootstrapped indirect effect tests were conducted to examine whether pain-related anxiety mediated the relationships between race (NHW vs NA) and measures of pain tolerance (electric, heat, ischemia, and cold pressor), temporal summation of pain and the nociceptive flexion reflex (NFR), and conditioned pain modulation of pain/NFR. RESULTS Pain-related anxiety mediated the relationships between NA race and pain tolerance and conditioned pain modulation of NFR. Exploratory analyses failed to show that race moderated relationships between pain-related anxiety and pain outcomes. CONCLUSION These findings imply that pain-related anxiety is not a unique mechanism of pain risk for NAs, but that the greater tendency to experience pain-related anxiety by NAs impairs their ability to engage descending inhibition of spinal nociception and decreases their pain tolerance (more so than NHWs). Thus, pain-related anxiety may promote pronociceptive processes in NAs to place them at risk for future chronic pain.
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Affiliation(s)
- Jamie L. Rhudy
- Department of Psychology, The University of Tulsa, Tulsa, OK, USA
| | - Felicitas Huber
- Department of Psychology, The University of Tulsa, Tulsa, OK, USA
| | - Bethany L. Kuhn
- Department of Psychology, The University of Tulsa, Tulsa, OK, USA
| | - Edward W. Lannon
- Department of Psychology, The University of Tulsa, Tulsa, OK, USA
| | - Shreela Palit
- Department of Psychology, The University of Tulsa, Tulsa, OK, USA
- Department of Community Dentistry & Behavioral Science, University of Florida, Pain Research and Intervention Center of Excellence, Gainesville, FL, USA
| | - Michael F. Payne
- Department of Psychology, The University of Tulsa, Tulsa, OK, USA
- Department of Pediatrics, Division of Behavioral Medicine and Clinical Psychology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Natalie Hellman
- Department of Psychology, The University of Tulsa, Tulsa, OK, USA
| | | | | | - Tyler A. Toledo
- Department of Psychology, The University of Tulsa, Tulsa, OK, USA
| | - Mara J. Demuth
- Department of Psychology, The University of Tulsa, Tulsa, OK, USA
| | - Burkhart J. Hahn
- Department of Psychology, The University of Tulsa, Tulsa, OK, USA
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Cho SK, Jung SY, Choi S, Im SG, Kim H, Choi WS, Jang EJ, Sung YK. Factors related to the use of opioids as early treatment in patients with knee osteoarthritis. Arthritis Res Ther 2019; 21:222. [PMID: 31685008 PMCID: PMC6827242 DOI: 10.1186/s13075-019-2004-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 09/13/2019] [Indexed: 01/10/2023] Open
Abstract
Objective To examine factors related to the use of opioids as an early treatment option for knee OA patients Methods Using the Korean nationwide claim database, we selected knee OA patients between 2013 and 2015. Among them, patients without any claim of knee OA for 2 years before the index date were included as our study population. We analyzed their first claim for prescriptions, including tramadol and stronger opioids, at the index date of each patient. Using a multinomial model, we identified factors associated with the early use of tramadol and stronger opioids in knee OA patients. Results Among a total of 2,857,999 knee OA patients, 12.2% (n = 348,516) were treated with opioids as their first treatment. However, the prevalence of stronger opioid use was only 0.07% (n = 1972). Male sex (OR 1.28 in tramadol, OR 1.13 in stronger opioids) and comorbidities with depression (OR 1.05, 1.46), low back pain (OR 1.13, 1.30), intervertebral disc disorder (OR 1.11, 1.40), and spinal stenosis (OR 1.27, 1.55) were the factors for the early use of tramadol or stronger opioids in knee OA patients. Patients in a tertiary referral hospital tended to use tramadol or stronger opioids than those in clinics (OR 1.04, 56.63, respectively). Conclusion In Korea, 12.2% of knee OA patients were treated with opioids as an early treatment, and tramadol was used more commonly than stronger opioids. Male sex and having comorbidities such as depression or musculoskeletal disease are patient factors associated with the early use of opioids in knee OA patients.
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Affiliation(s)
- Soo-Kyung Cho
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, 222-1 wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Sun-Young Jung
- College of Pharmacy, Chung-Ang University, 84, Heukseok-ro, Dongjak-gu, Seoul, 06974, Republic of Korea
| | - Seongmi Choi
- Department of Statistics, Kyungpook National University, 80, Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea
| | - Seul Gi Im
- Department of Statistics, Kyungpook National University, 80, Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea
| | - Hyoungyoung Kim
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, 222-1 wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Woo Seok Choi
- Department of Statistics, Kyungpook National University, 80, Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea
| | - Eun Jin Jang
- Department of Information Statistics, Andong National University, 1375, Gyeongdong-ro, Andong-si, Gyeongsangbuk-do, 36729, Republic of Korea
| | - Yoon-Kyoung Sung
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, 222-1 wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea.
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Brooks JM, Petersen C, Kelly SM, Reid MC. Likelihood of depressive symptoms in US older adults by prescribed opioid potency: National Health and Nutrition Examination Survey 2005-2013. Int J Geriatr Psychiatry 2019; 34:1481-1489. [PMID: 31134673 PMCID: PMC6742518 DOI: 10.1002/gps.5157] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 05/22/2019] [Indexed: 11/05/2022]
Abstract
OBJECTIVES To investigate the relationships between depressive symptoms and opioid potency among adults aged 50 years and older reporting use of one or more prescription opioids in the past 30 days. MATERIALS/DESIGN Adjusted multiple linear regression models were conducted with 2005-2013 files from a secondary cross-sectional dataset, the National Health and Nutrition Examination Survey (NHANES). Respondents were community-dwelling, noninstitutionalized adults 50 years or older (n = 1036). Predictor variables included a positive screen for minor depression symptoms (Patient Health Questionnaire [PHQ-9] score greater than or equal to 5 and less than or equal to 9), moderate depression symptoms (PHQ-9 greater than or equal to 10 and less than or equal to 14), and severe depression symptoms (PHQ-9 greater than or equal to 15). Criterion variables included weaker-than-morphine analgesics (eg, codeine and tramadol) and morphine-equivalent opioids (eg, morphine and hydrocodone), which served as the reference category, as well as stronger-than-morphine opioid analgesics (eg, fentanyl and oxycodone). RESULTS Prevalence rates for symptoms of minor depression, moderate depression, and severe depression were n = 236 (22.8%), n = 135 (13.0%), and n = 122 (11.8%), respectively. Severe depression was significantly associated with high-potency opioid use (odds ratio [OR]: 2.27; confidence interval [CI], 1.16-4.46). In post hoc tests, severe depression remained significantly associated with high-potency opioid use only among respondents without arthritis (OR: 5.80; CI, 1.59-21.13). CONCLUSIONS Compared with older adults without depressive symptoms, older adults with severe depressive symptoms are more likely to be taking high-potency opioid medications. Future prescription opioid medication research should prioritize investigations among older adults with pain-related diagnoses, other than arthritis, reporting preexisting or new symptoms of severe depression.
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Affiliation(s)
- Jessica M. Brooks
- Geriatric Research, Education, and Clinical Center, James J. Peters VA, Medical Center, Bronx, NY
| | - Curtis Petersen
- Quantiative Biomedical Sciences, Geisel School of Medicine at Dartmouth College, Lebanon, NH
- The Dartmouth Institute for Health Policy & Clinical Practice, Lebanon, NH
| | - Stephanie M. Kelly
- The Dartmouth Institute for Health Policy & Clinical Practice, Lebanon, NH
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Maleki N, Tahaney K, Thompson BL, Oscar-Berman M. At the intersection of alcohol use disorder and chronic pain. Neuropsychology 2019; 33:795-807. [PMID: 31448947 PMCID: PMC6711399 DOI: 10.1037/neu0000558] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
OBJECTIVE Alcohol use disorder (AUD) and chronic pain are widespread conditions with extensive public health burden. This review seeks to describe neuroanatomical links and major mediating influences between AUD and chronic pain, in the service of identifying factors that predict the risk of chronic pain in precipitating or facilitating AUD. METHOD We review the neural bases of pain and the influence of AUD on processes involved in pain perception. We propose potential mechanisms involved in the development of chronic pain in AUD, and we consider implications for pain management in recovery from AUD. RESULTS Pain is a multidimensional and subjective experience that, in its acute form, is essential for survival, but in chronic form, pain is a disorder that negatively impacts quality of life. Neural substrates involved in initiating and maintaining chronic pain include dysfunction in descending pain pathways and reward network circuitry. AUD involves preoccupation or craving, intoxication, withdrawal, and negative affect. Neural substrates of AUD involve widespread mesocorticolimbic and cerebrocerebellar networks. Both conditions involve dysfunction of extended reward and oversight circuitry, particularly prefrontal cortex. CONCLUSIONS The interrelationship between chronic pain and AUD resides in the intersection of etiological influences, mental experiences, and neurobiological processes. Characterization of the connection between brain and behavioral abnormalities in AUD's precipitation of chronic pain-and vice versa-allows for early detection and treatment of patients at risk for developing either or both of these conditions and for preemptive interventional approaches to reduce the risk of consequent vulnerabilities and harm. (PsycINFO Database Record (c) 2019 APA, all rights reserved).
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Affiliation(s)
- Nasim Maleki
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- VA Boston Healthcare System, Boston, MA, USA
| | - Kelli Tahaney
- VA Boston Healthcare System, Boston, MA, USA
- Department of Anatomy & Neurobiology, Boston University School of Medicine, Boston, MA, USA
- Department of Psychology, Boston University, Boston, MA, USA
| | - Benjamin L. Thompson
- VA Boston Healthcare System, Boston, MA, USA
- Department of Anatomy & Neurobiology, Boston University School of Medicine, Boston, MA, USA
| | - Marlene Oscar-Berman
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
- VA Boston Healthcare System, Boston, MA, USA
- Department of Anatomy & Neurobiology, Boston University School of Medicine, Boston, MA, USA
- Departments of Psychiatry and Neurology, Boston School of Medicine, Boston, MA, USA
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10
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Rhudy JL, Lannon EW, Kuhn BL, Palit S, Payne MF, Sturycz CA, Hellman N, Güereca YM, Toledo TA, Coleman HB, Thompson KA, Fisher JM, Herbig SP, Barnoski KB, Chee L, Shadlow JO. Sensory, Affective, and Catastrophizing Reactions to Multiple Stimulus Modalities: Results from the Oklahoma Study of Native American Pain Risk. THE JOURNAL OF PAIN 2019; 20:965-979. [PMID: 30797963 PMCID: PMC6689438 DOI: 10.1016/j.jpain.2019.02.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 01/31/2019] [Accepted: 02/16/2019] [Indexed: 02/07/2023]
Abstract
Native Americans (NAs) have a higher prevalence of chronic pain than any other U.S. racial/ethnic group; however, little is known about the mechanisms for this pain disparity. This study used quantitative sensory testing to assess pain experience in healthy, pain-free adults (n = 137 NAs (87 female), n = 145 non-Hispanic whites (NHW; 68 female)) after painful electric, heat, cold, ischemic, and pressure stimuli. After each stimulus, ratings of pain intensity, sensory pain, affective pain, pain-related anxiety, and situation-specific pain catastrophizing were assessed. The results suggested that NAs reported greater sensory pain in response to suprathreshold electric and heat stimuli, greater pain-related anxiety to heat and ischemic stimuli, and more catastrophic thoughts in response to electric and heat stimuli. Sex differences were also noted; however, with the exception of catastrophic thoughts to cold, these finding were not moderated by race/ethnicity. Together, findings suggest NAs experience heightened sensory, anxiety, and catastrophizing reactions to painful stimuli. This could place NAs at risk for future chronic pain and could ultimately lead to a vicious cycle that maintains pain (eg, pain → anxiety/catastrophizing → pain). PERSPECTIVE: NAs experienced heightened sensory, anxiety, and catastrophizing reactions in response to multiple pain stimuli. Given the potential for anxiety and catastrophic thoughts to amplify pain, this characteristic may place them at risk for pain disorders and could lead to a vicious cycle that maintains pain.
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Affiliation(s)
- Jamie L Rhudy
- The University of Tulsa, Department of Psychology, Tulsa, Oklahoma.
| | - Edward W Lannon
- The University of Tulsa, Department of Psychology, Tulsa, Oklahoma
| | - Bethany L Kuhn
- The University of Tulsa, Department of Psychology, Tulsa, Oklahoma
| | - Shreela Palit
- The University of Tulsa, Department of Psychology, Tulsa, Oklahoma; University of Washington School of Medicine, Department of Psychiatry & Behavioral Sciences, Seattle, Washington
| | - Michael F Payne
- The University of Tulsa, Department of Psychology, Tulsa, Oklahoma; Cincinnati Children's Hospital Medical Center, Department of Anesthesiology, Cincinnati, Ohio
| | | | - Natalie Hellman
- The University of Tulsa, Department of Psychology, Tulsa, Oklahoma
| | - Yvette M Güereca
- The University of Tulsa, Department of Psychology, Tulsa, Oklahoma
| | - Tyler A Toledo
- The University of Tulsa, Department of Psychology, Tulsa, Oklahoma
| | - Heather B Coleman
- The University of Tulsa, Department of Psychology, Tulsa, Oklahoma; Northeastern State University, Department of Psychology, Tahlequah, Oklahoma
| | - Kathryn A Thompson
- The University of Tulsa, Department of Psychology, Tulsa, Oklahoma; University of Alabama at Birmingham, Department of Psychology, Birmingham, Alabama
| | - Jessica M Fisher
- The University of Tulsa, Department of Psychology, Tulsa, Oklahoma
| | - Samuel P Herbig
- The University of Tulsa, Department of Psychology, Tulsa, Oklahoma
| | - Ky'Lee B Barnoski
- The University of Tulsa, Department of Psychology, Tulsa, Oklahoma; University of Oklahoma-Tulsa, Department of Social Work, Tulsa, OK
| | - Lucinda Chee
- The University of Tulsa, Department of Psychology, Tulsa, Oklahoma
| | - Joanna O Shadlow
- The University of Tulsa, Department of Psychology, Tulsa, Oklahoma
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Vina E, Hausmann L, Obrosky D, Youk A, Ibrahim S, Weiner D, Gallagher R, Kwoh C. Social & psychological factors associated with oral analgesic use in knee osteoarthritis management. Osteoarthritis Cartilage 2019; 27:1018-1025. [PMID: 30716537 PMCID: PMC6579618 DOI: 10.1016/j.joca.2019.01.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 01/02/2019] [Accepted: 01/23/2019] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Determine modifiable social and psychological health factors that are associated with use of oral opioid and non-opioid medications for OA. METHODS Patients were categorized based on use of the following oral medications: opioids (with/without other oral analgesic treatments), non-opioid analgesics, and no oral analgesic treatment. We used multinomial logistic regression models to estimate adjusted relative risk ratios (RRRs) of using an opioid or a non-opioid analgesic (vs. no oral analgesic treatment), comparing patients by levels of social support (Medical Outcomes Study scale), health literacy ("How confident are you filling out medical forms by yourself?"), and depressive symptoms (Patient Health Questionnaire-8). Models were adjusted for demographic and clinical characteristics. RESULTS In this sample (mean age 64.2 years, 23.6% women), 30.6% (n = 110) reported taking opioid analgesics for OA, 54.2% (n = 195) reported non-opioid use, and 15.3% (n = 55) reported no oral analgesic use. Opioid users had lower mean social support scores (10.0 vs 10.5 vs 11.9, P = 0.007) and were more likely to have moderate-severe depressive symptoms (42.7% vs 24.1% vs 14.5%, P < 0.001). Health literacy did not differ by treatment group type. Having moderate-severe depression was associated with higher risk of opioid analgesic use compared to no oral analgesic use (RRR 2.96, 95%CI 1.08-8.07) when adjusted for sociodemographic and clinical factors. Neither social support nor health literacy was associated with opioid or non-opioid oral analgesic use in fully adjusted models. CONCLUSIONS Knee OA patients with more severe depression symptoms, compared to those without, were more likely to report using opioid analgesics for OA.
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Affiliation(s)
- E.R. Vina
- College of Medicine and UA Arthritis Center, University of Arizona (UA), Tucson, AZ, USA,Address correspondence and reprint requests to: Ernest R. Vina, MD, MS, University of Arizona Arthritis Center, 1501 N. Campbell Ave., PO Box 245093, Tucson, AZ 85724-5093. Tel.#: (520) 626-4206. Fax #: (520) 626-2587.
| | - L.R.M. Hausmann
- Center for Health Equity Research and Promotion (CHERP), VA Pittsburgh Healthcare System (VAPHS), Pittsburgh, PA, USA,School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - D.S. Obrosky
- Center for Health Equity Research and Promotion (CHERP), VA Pittsburgh Healthcare System (VAPHS), Pittsburgh, PA, USA
| | - A. Youk
- Center for Health Equity Research and Promotion (CHERP), VA Pittsburgh Healthcare System (VAPHS), Pittsburgh, PA, USA,Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - S.A. Ibrahim
- Weill Cornell Medicine, Department of Healthcare Policy & Research, Cornell University, New York, NY, USA
| | - D.K. Weiner
- School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA,Geriatric Research, Education & Clinical Center, VAPHS, Pittsburgh, PA, USA
| | - R.M. Gallagher
- CHERP, Corporal Michael J. Crescenz VA Medical Center, Philadelphia, PA, USA,School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - C.K. Kwoh
- College of Medicine and UA Arthritis Center, University of Arizona (UA), Tucson, AZ, USA
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12
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DelVentura JL, Terry EL, Bartley EJ, Rhudy JL. Emotional modulation of pain and spinal nociception in persons with severe insomnia symptoms. Ann Behav Med 2014; 47:303-15. [PMID: 24101292 PMCID: PMC3980198 DOI: 10.1007/s12160-013-9551-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND Impaired sleep enhances pain, perhaps by disrupting pain modulation. PURPOSE Given that emotion modulates pain, the present study examined whether emotional modulation of pain and nociception is impaired in persons with severe insomnia symptoms relative to controls. METHODS Insomnia group (n = 12) met the International Classification of Diseases, tenth revision symptoms for primary insomnia and controls (n = 13) reported no sleep impairment. Participants were shown emotionally evocative pictures (mutilation, neutral, and erotica) during which suprathreshold pain stimuli were delivered to evoke pain and the nociceptive flexion reflex (NFR; physiological correlate of spinal nociception). RESULTS Emotional responses to pictures were similar in both groups, except that subjective valence/pleasure ratings were blunted in insomnia. Emotional modulation of pain and NFR was observed in controls, but only emotional modulation of NFR was observed in insomnia. CONCLUSIONS Consistent with previous findings, pain modulation is disrupted in insomnia, which might promote pain. This may stem from disrupted supraspinal circuits not disrupted brain-to-spinal cord circuits.
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Affiliation(s)
- Jennifer L DelVentura
- Department of Psychology, The University of Tulsa, 800 South Tucker Drive, Tulsa, OK, 74104, USA
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13
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Abstract
The intensity and severity of perceived pain does not correlate consistently with the degree of peripheral or central nervous system tissue damage or with the intensity of primary afferent or spinal nociceptive neurone activity. In this respect, the modulation of pain by emotion and context is now widely recognized. In particular, stress, fear and anxiety exert potent, but complex, modulatory influences on pain. Stress can either suppress pain (stress-induced analgesia) or exacerbate it (stress-induced hyperalgesia; SIH) depending on the nature, duration and intensity of the stressor. Herein, we review the methods and models used to study the phenomenon of SIH in rodents and humans and then present a detailed discussion of our current understanding of neural substrates and neurobiological mechanisms. The review provides perspectives and challenges for the current and future treatment of pain and the co-morbidity of pain with stress-related psychiatric disorders including anxiety and depression.
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Affiliation(s)
- Weredeselam M Olango
- Pharmacology and Therapeutics, School of Medicine, NCBES Galway Neuroscience Centre and Centre for Pain Research, National University of Ireland, University Road, Galway, Ireland
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14
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Increased pain sensitivity in alcohol withdrawal syndrome. Eur J Pain 2012; 14:713-8. [DOI: 10.1016/j.ejpain.2009.11.008] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2009] [Revised: 11/23/2009] [Accepted: 11/24/2009] [Indexed: 10/20/2022]
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15
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Carcoba LM, Contreras AE, Cepeda-Benito A, Meagher MW. Negative affect heightens opiate withdrawal-induced hyperalgesia in heroin dependent individuals. J Addict Dis 2011; 30:258-70. [PMID: 21745048 PMCID: PMC3209757 DOI: 10.1080/10550887.2011.581985] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
This study examined the effect of emotion on opiate withdrawal induced hyperalgesia to determine whether emotional states modulate the magnitude of hyperalgesia. One hundred Hispanic men were recruited into one of three groups: heroin withdrawal, long-term heroin abstinence, and control. Participants were presented with pictures to induce neutral, positive, and negative emotional states. Affective valence, arousal, pain threshold, and tolerance to ischemic pain were measured. When pain threshold and tolerance were compared, the withdrawal group displayed significant heightened pain sensitivity when negative affect was induced. The authors also found that former heroin addicts showed heightened pain sensitivity following months of abstinence.
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16
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Palit S, Sheaff RJ, France CR, McGlone ST, Potter WT, Harkness AR, McNulty JL, Bartley EJ, Hoffmann R, Monda JK, Rhudy JL. Serotonin transporter gene (5-HTTLPR) polymorphisms are associated with emotional modulation of pain but not emotional modulation of spinal nociception. Biol Psychol 2011; 86:360-9. [DOI: 10.1016/j.biopsycho.2011.01.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2010] [Revised: 01/07/2011] [Accepted: 01/24/2011] [Indexed: 12/18/2022]
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17
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Trends in use of opioids for chronic noncancer pain among individuals with mental health and substance use disorders: the TROUP study. Clin J Pain 2010; 26:1-8. [PMID: 20026946 DOI: 10.1097/ajp.0b013e3181b99f35] [Citation(s) in RCA: 187] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES Use of prescription opioids for chronic pain is increasing, as is abuse of these medications, though the nature of the link between these trends is unclear. These increases may be most marked in patients with mental health (MH) and substance use disorders (SUDs). We analyzed trends between 2000 and 2005 in opioid prescribing among individuals with noncancer pain conditions (NCPC), with and without MH and SUDs. METHODS Secondary data analysis of longitudinal administrative data from 2 dissimilar populations: a national, commercially insured population and Arkansas Medicaid enrollees. We examined these opioid outcomes: (1) rates of any prescription opioid use in the past year, (2) rates of chronic use of prescription opioids (greater than 90 d in the past year), (3) mean days supply of opioids, (4) mean daily opioid dose in morphine equivalents, and (5) percentage of total opioid dose that was Schedule II opioids. RESULTS In 2000, among individuals with NCPC, chronic opioid use was more common among those with a MH or SUD than among those without in commercially insured (8% vs. 3%, P<0.001) and Arkansas Medicaid (20% vs. 13%, P<0.001) populations. Between 2000 and 2005, in commercially insured, rates of chronic opioid use increased by 34.9% among individuals with an MH or SUD and 27.8% among individuals without these disorders. In Arkansas Medicaid chronic, opioid use increased by 55.4% among individuals with an MH or SUD and 39.8% among those without. DISCUSSION Chronic use of prescription opioids for NCPC is much higher and growing faster in patients with MH and SUDs than in those without these diagnoses. Clinicians should monitor the use of prescription opioids in these vulnerable groups to determine whether opioids are substituting for or interfering with appropriate MH and substance abuse treatment.
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Rhudy JL, Bartley EJ, Williams AE. Habituation, sensitization, and emotional valence modulation of pain responses. Pain 2009; 148:320-327. [PMID: 20022696 DOI: 10.1016/j.pain.2009.11.018] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2009] [Revised: 11/13/2009] [Accepted: 11/19/2009] [Indexed: 11/17/2022]
Abstract
The Emotional Controls of Nociception (ECON) paradigm involves the presentation of emotionally-charged pictures during which painful stimuli are delivered. Across several ECON studies, unpleasant pictures enhanced pain and nociception, whereas pleasant pictures inhibited pain and nociception. However, at this time it is unknown whether emotional valence (unpleasant, neutral, pleasant) influences the habituation or sensitization of pain responses that occurs within a testing session. Indeed, ECON assumes that emotional valence modulation of pain is consistent throughout testing; otherwise the interpretation of valence modulation (unpleasant>neutral>pleasant) could be threatened. To address this issue, the present study (N=120) presented 108 pictures that varied in emotional valence. During and in between pictures, 52 suprathreshold electrocutaneous stimuli were delivered to evoke pain, the nociceptive flexion reflex [NFR], and pain-evoked skin conductance response [SCR]. Mixed effects ANOVAs verified that within-subject changes in pain responses were influenced by stimulus repetition (NFR and SCR habituated, pain ratings sensitized) and emotional valence (responses were highest during unpleasant pictures, intermediate during neutral pictures, and lowest during pleasant pictures). However, habituation/sensitization slopes were unaffected by emotional valence, thus indicating emotional valence modulation was consistently observed throughout the testing session. These results provide additional validation for the ECON paradigm and suggest that the circuit responsible for emotional modulation of pain and nociception is less susceptible to habituation or sensitization than the circuits responsible for responses to suprathreshold shocks.
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Affiliation(s)
- Jamie L Rhudy
- Department of Psychology, The University of Tulsa, USA
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19
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Martenson ME, Cetas JS, Heinricher MM. A possible neural basis for stress-induced hyperalgesia. Pain 2009; 142:236-244. [PMID: 19232470 DOI: 10.1016/j.pain.2009.01.011] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2008] [Revised: 12/30/2008] [Accepted: 01/09/2009] [Indexed: 12/26/2022]
Abstract
Intense stress and fear have long been known to give rise to a suppression of pain termed "stress-induced analgesia", mediated by brainstem pain-modulating circuitry, including pain-inhibiting neurons of the rostral ventromedial medulla. However, stress does not invariably suppress pain, and indeed, may exacerbate it. Although there is a growing support for the idea of "stress-induced hyperalgesia", the neurobiological basis for this effect remains almost entirely unknown. Using simultaneous single-cell recording and functional analysis, we show here that stimulation of the dorsomedial nucleus of the hypothalamus, known to be a critical component of central mechanisms mediating neuroendocrine, cardiovascular and thermogenic responses to mild or "emotional" stressors such as air puff, also triggers thermal hyperalgesia by recruiting pain-facilitating neurons, "ON-cells", in the rostral ventromedial medulla. Activity of identified RVM ON-cells, OFF-cells and NEUTRAL cells, nociceptive withdrawal thresholds, rectal temperature, and heart rate were recorded in lightly anesthetized rats. In addition to the expected increases in body temperature and heart rate, disinhibition of the DMH induced a robust activation of ON-cells, suppression of OFF-cell firing and behavioral hyperalgesia. Blocking ON-cell activation prevented hyperalgesia, but did not interfere with DMH-induced thermogenesis or tachycardia, pointing to differentiation of neural substrates for autonomic and nociceptive modulation within the RVM. These data demonstrate a top-down activation of brainstem pain-facilitating neurons, and suggest a possible neural circuit for stress-induced hyperalgesia.
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Affiliation(s)
- Melissa E Martenson
- Department of Neurological Surgery, CR-137, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA Department of Behavioral Neuroscience, Oregon Health & Science University, Portland, OR 97239, USA
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Abstract
OBJECTIVE This study examined modulation of trigeminal pain/nociception by 2 supraspinal mechanisms: emotional controls of nociception and diffuse noxious inhibitory controls. BACKGROUND Prior research suggests emotional picture viewing (emotional controls) and tonic noxious stimuli (diffuse noxious inhibitory controls) engage supraspinal mechanisms to modulate pain and nociceptive processes. It is currently unknown, however, whether emotional controls modulate trigeminal pain and nociception. Additionally, the influences of emotional controls and diffuse noxious inhibitory controls have not been compared in the same group of participants. METHODS Noxious electrodermal stimuli were delivered to the trigeminal nerve using a concentric electrode designed to selectively activate nociceptive fibers. Trigeminal nociception and pain were assessed (34 participants) from the nociceptive blink reflex and pain ratings, respectively. Emotional controls were engaged by presentation of standardized picture stimuli (pleasant, neutral, and unpleasant) shown to reliably evoke pleasure-induced inhibition and displeasure-induced facilitation of pain and nociception. Diffuse noxious inhibitory controls were engaged with a forearm ischemia task. RESULTS Trigeminal pain (self-report ratings) and nociception (blinks) were facilitated by unpleasant pictures and inhibited by pleasant pictures. Emotion induction (as assessed from trend analysis) explained 51% of the variance in trigeminal pain and 25% of the variance in trigeminal nociception. Additionally, forearm ischemia inhibited trigeminal pain but not nociception. The baseline vs ischemia comparison explained 17% of the variance in pain report and 0.1% of the variance in blinks. Supraspinal modulation by emotional controls and diffuse noxious inhibitory controls were uncorrelated. CONCLUSIONS Emotional controls and diffuse noxious inhibitory controls modulated trigeminal pain and emotional controls modulated trigeminal nociception. These procedures can be used to study supraspinal modulation of nociceptive processing in disorders of the trigeminal pain system, including headache.
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Affiliation(s)
- Amy E Williams
- Department of Psychology, University of Tulsa, 800 South Tucker Drive, Tulsa, OK 74104, USA
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21
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Gallagher RM. Pain intensity, emotional state, and personality trait: which comes first? PAIN MEDICINE 2006; 7:471-2. [PMID: 17112358 DOI: 10.1111/j.1526-4637.2006.00245.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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