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Guo R, Ou YN, Ma LY, Tang L, Yang L, Feng JF, Cheng W, Tan L, Yu JT. Osteoarthritis, osteoarthritis treatment and risk of incident dementia: a prospective cohort study based on UK Biobank. Age Ageing 2024; 53:afae167. [PMID: 39108220 PMCID: PMC11303829 DOI: 10.1093/ageing/afae167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 02/22/2024] [Indexed: 08/10/2024] Open
Abstract
BACKGROUND We aimed to investigate the association between OA and treatment with dementia risk and structural brain abnormalities. METHODS We recruited a total of 466,460 individuals from the UK Biobank to investigate the impact of OA on the incidence of dementia. Among the total population, there were 63,081 participants diagnosed with OA. We subsequently categorised the OA patients into medication and surgery groups based on treatment routes. Cox regression models explored the associations between OA/OA treatment and dementia risk, with the results represented as hazard ratios (HRs) and 95% confidence intervals (95% CI). Linear regression models assessed the associations of OA/OA therapy with alterations in cortical structure. RESULTS During an average of 11.90 (± 1.01) years of follow-up, 5,627 individuals were diagnosed with all-cause dementia (ACD), including 2,438 AD (Alzheimer's disease), and 1,312 VaD (vascular dementia) cases. Results revealed that OA was associated with the elevated risk of ACD (HR: 1.116; 95% CI: 1.039-1.199) and AD (HR: 1.127; 95% CI: 1.013-1.254). OA therapy lowered the risk of dementia in both medication group (HR: 0.746; 95% CI: 0.652-0.854) and surgery group (HR: 0.841; 95% CI: 0.736-0.960). OA was negatively associated with cortical area, especially precentral, postcentral and temporal regions. CONCLUSIONS Osteoarthritis increased the likelihood of developing dementia, and had an association with regional brain atrophy. OA treatment lowered the dementia risk. OA is a promising modifiable risk factor for dementia.
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Affiliation(s)
- Rong Guo
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China
| | - Ya-Nan Ou
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China
| | - Li-Yun Ma
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China
| | - Lian Tang
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China
| | - Liu Yang
- Department of Neurology and Institute of Neurology, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, National Center for Neurological Disorders, Shanghai, China
| | - Jian-Feng Feng
- Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, China
- Key Laboratory of Computational Neuroscience and Brain-Inspired Intelligence (Fudan University), Ministry of Education, Shanghai, China
- Fudan ISTBI—ZJNU Algorithm Centre for Brain-Inspired Intelligence, Zhejiang Normal University, Jinhua, China
- MOE Frontiers Center for Brain Science, Fudan University, Shanghai, China
- Zhangjiang Fudan International Innovation Center, Shanghai, China
| | - Wei Cheng
- Department of Neurology and Institute of Neurology, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, National Center for Neurological Disorders, Shanghai, China
- Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, China
- Key Laboratory of Computational Neuroscience and Brain-Inspired Intelligence (Fudan University), Ministry of Education, Shanghai, China
- Fudan ISTBI—ZJNU Algorithm Centre for Brain-Inspired Intelligence, Zhejiang Normal University, Jinhua, China
| | - Lan Tan
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China
| | - Jin-Tai Yu
- Department of Neurology and Institute of Neurology, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, National Center for Neurological Disorders, Shanghai, China
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Murillo C, López-Sola M, Cagnie B, Suñol M, Smeets RJEM, Coppieters I, Cnockaert E, Meeus M, Timmers I. Gray Matter Adaptations to Chronic Pain in People with Whiplash-Associated Disorders are Partially Reversed After Treatment: A Voxel-based Morphometry Study. THE JOURNAL OF PAIN 2024; 25:104471. [PMID: 38232862 DOI: 10.1016/j.jpain.2024.01.336] [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: 06/23/2023] [Revised: 12/04/2023] [Accepted: 01/08/2024] [Indexed: 01/19/2024]
Abstract
Gray matter (GM) changes are often observed in people with chronic spinal pain, including those with chronic whiplash-associated disorders (CWAD). These GM adaptations may be reversed with treatment, at least partially. Pain neuroscience education combined with exercise (PNE+Exercise) is an effective treatment, but its neural underlying mechanisms still remain unexplored in CWAD. Here, we performed both cross-sectional and longitudinal voxel-based morphometry to 1) identify potential GM alterations in people with CWAD (n = 63) compared to age- and sex-matched pain-free controls (n = 32), and 2) determine whether these GM alterations might be reversed following PNE+Exercise (compared to conventional physiotherapy). The cross-sectional whole-brain analysis revealed that individuals with CWAD had less GM volume in the right and left dorsolateral prefrontal cortex and left inferior temporal gyrus which was, in turn, associated with higher pain vigilance. Fifty individuals with CWAD and 29 pain-free controls were retained in the longitudinal analysis. GM in the right dorsolateral prefrontal cortex increased after treatment in people with CWAD. Moreover, the longitudinal whole-brain analysis revealed that individuals with CWAD had decreases in GM volumes of the left and right central operculum and supramarginal after treatment. These changes were not specific to treatment modality and some were not observed in pain-free controls over time. Herewith, we provide the first evidence on how GM adaptations to CWAD respond to treatment. PERSPECTIVE: This article presents which gray matter adaptations are present in people with chronic pain after whiplash injuries. Then, we examine the treatment effect on these alterations as well as whether other neuroplastic effects on GM following treatment occur.
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Affiliation(s)
- Carlos Murillo
- Department of Rehabilitation Sciences, Faculty of Health Sciences and Medicine, Ghent University, Belgium
| | - Marina López-Sola
- Department of Medicine, School of Medicine and Health Sciences, University of Barcelona, Spain
| | - Barbara Cagnie
- Department of Rehabilitation Sciences, Faculty of Health Sciences and Medicine, Ghent University, Belgium
| | - María Suñol
- Department of Medicine, School of Medicine and Health Sciences, University of Barcelona, Spain
| | - Rob J E M Smeets
- Department of Rehabilitation Medicine, Faculty of Health, Medicine and Life Science, Maastricht University, the Netherlands
| | - Iris Coppieters
- Laboratory for Brain-Gut Axis Studies (LaBGAS), Department of chronic diseases and metabolism, Faculty of Medicine, KU Leuven, Belgium; Department of Physiotherapy, Human Physiology and Anatomy, Faculty of Physical Education and Physiotherapy, Vrije Universiteit Brussel, Belgium
| | - Elise Cnockaert
- Department of Rehabilitation Sciences, Faculty of Health Sciences and Medicine, Ghent University, Belgium
| | - Mira Meeus
- Department of Rehabilitation Sciences, Faculty of Health Sciences and Medicine, Ghent University, Belgium; MOVANT research group, Department of Rehabilitation Sciences and Physiotherapy, Faculty of Health Sciences and Medicine, University of Antwerp, Belgium
| | - Inge Timmers
- Department of Rehabilitation Sciences, Faculty of Health Sciences and Medicine, Ghent University, Belgium; Department of Rehabilitation Medicine, Faculty of Health, Medicine and Life Science, Maastricht University, the Netherlands; Department of Medical and Clinical Psychology, Tilburg University, the Netherlands
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3
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Martucci KT. Neuroimaging of opioid effects in humans across conditions of acute administration, chronic pain therapy, and opioid use disorder. Trends Neurosci 2024; 47:418-431. [PMID: 38762362 PMCID: PMC11168870 DOI: 10.1016/j.tins.2024.04.005] [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: 10/30/2023] [Revised: 04/01/2024] [Accepted: 04/21/2024] [Indexed: 05/20/2024]
Abstract
Evidence of central nervous system (CNS) exogenous opioid effects in humans has been primarily gained through neuroimaging of three participant populations: individuals after acute opioid administration, those with opioid use disorder (OUD), and those with chronic pain receiving opioid therapy. In both the brain and spinal cord, opioids alter processes of pain, cognition, and reward. Opioid-related CNS effects may persist and accumulate with longer opioid use duration. Meanwhile, opioid-induced benefits versus risks to brain health remain unclear. This review article highlights recent accumulating evidence for how exogenous opioids impact the CNS in humans. While investigation of CNS opioid effects has remained largely disparate across contexts of opioid acute administration, OUD, and chronic pain opioid therapy, integration across these contexts may enable advancement toward effective interventions.
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Affiliation(s)
- Katherine T Martucci
- Human Affect and Pain Neuroscience Lab, Department of Anesthesiology, Duke University Medical Center, Durham, NC, USA; Center for Translational Pain Medicine, Duke University School of Medicine, Durham, NC, USA; Duke Institute for Brain Sciences, Duke University, Durham, NC, USA.
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4
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Warner NS, Hanson AC, Schulte PJ, Kara F, Reid RI, Schwarz CG, Benarroch EE, Graff-Radford J, Vemuri P, Jack CR, Petersen RC, Warner DO, Mielke MM, Kantarci K. Prescription Opioids and Brain Structure in Community-Dwelling Older Adults. Mayo Clin Proc 2024; 99:716-726. [PMID: 38702125 PMCID: PMC11081533 DOI: 10.1016/j.mayocp.2024.01.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 12/22/2023] [Accepted: 01/30/2024] [Indexed: 05/06/2024]
Abstract
OBJECTIVE To evaluate the associations between prescription opioid exposures in community-dwelling older adults and gray and white matter structure by magnetic resonance imaging. METHODS Secondary analysis was conducted of a prospective, longitudinal population-based cohort study employing cross-sectional imaging of older adult (≥65 years) enrollees between November 1, 2004, and December 31, 2017. Gray matter outcomes included cortical thickness in 41 structures and subcortical volumes in 6 structures. White matter outcomes included fractional anisotropy in 40 tracts and global white matter hyperintensity volumes. The primary exposure was prescription opioid availability expressed as the per-year rate of opioid days preceding magnetic resonance imaging, with a secondary exposure of per-year total morphine milligram equivalents (MME). Multivariable models assessed associations between opioid exposures and brain structures. RESULTS The study included 2185 participants; median (interquartile range) age was 80 (75 to 85) years, 47% were women, and 1246 (57%) received opioids. No significant associations were found between opioids and gray matter. Increased opioid days and MME were associated with decreased white matter fractional anisotropy in 15 (38%) and 16 (40%) regions, respectively, including the corpus callosum, posterior thalamic radiation, and anterior limb of the internal capsule, among others. Opioid days and MME were also associated with greater white matter hyperintensity volume (1.02 [95% CI, 1.002 to 1.036; P=.029] and 1.01 [1.001 to 1.024; P=.032] increase in the geometric mean, respectively). CONCLUSION The duration and dose of prescription opioids were associated with decreased white matter integrity but not with gray matter structure. Future studies with longitudinal imaging and clinical correlation are warranted to further evaluate these relationships.
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Affiliation(s)
- Nafisseh S Warner
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, MN.
| | - Andrew C Hanson
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN
| | | | - Firat Kara
- Department of Radiology, Mayo Clinic, Rochester, MN
| | | | | | | | | | | | | | | | - David O Warner
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, MN
| | - Michelle M Mielke
- Department of Epidemiology and Prevention, Wake Forest University School of Medicine, Winston-Salem, NC
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Secrest S, Miller-Matero LR, Chrusciel T, Salas J, Sullivan MD, Zabel C, Lustman P, Ahmedani B, Carpenter RW, Scherrer JF. Baseline Characteristics From a New Longitudinal Cohort of Patients With Noncancer Pain and Chronic Opioid Use in the United States. THE JOURNAL OF PAIN 2024; 25:984-999. [PMID: 37907114 PMCID: PMC10960712 DOI: 10.1016/j.jpain.2023.10.019] [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: 08/04/2023] [Revised: 10/12/2023] [Accepted: 10/22/2023] [Indexed: 11/02/2023]
Abstract
Retrospective cohort studies have consistently observed that long-term prescription opioid use is a risk factor for new major depressive episodes. However, prospective studies are needed to confirm these findings and establish evidence for causation. The Prescription Opioids and Depression Pathways cohort study is designed for this purpose. The present report describes the baseline sample and associations between participant characteristics and odds of daily versus nondaily opioid use. Second, we report associations between participant characteristics and odds of depression, dysthymia, anhedonia, and vital exhaustion. Patients with noncancer pain were eligible if they started a new period of prescription opioid use lasting 30 to 90 days. Participants were 54.8 (standard deviation ± 11.3) years of age, 57.3% female and 73% White race. Less than college education was more common among daily versus nondaily opioid users (32.4% vs 27.3%; P = .0008), as was back pain (64.2% vs 51.3%; P < .0001), any nonopioid substance use disorder (12.8% vs 4.8%; P < .0001), and current smoking (30.7% vs 18.4% P < .0001). High pain interference (50.9% vs 28.4%; P < .0001) was significantly associated with depression, as was having more pain sites (6.9 ± 3.6 vs 5.7 ± 3.6; P < .0001), and benzodiazepine comedication (38.2% vs 23.4%; P < .0001). High pain interference was significantly more common among those with anhedonia (46.8% vs 27.4%; P < .0001), and more pain sites (7.0 ± 3.7 vs 5.6 ± 3.6; P < .0001) were associated with anhedonia. Having more pain sites (7.9 ± 3.6 vs 5.5 ± 3.50; P < .0001) was associated with vital exhaustion, as was back pain (71.9% vs 56.8%; P = .0001) and benzodiazepine comedication (42.8% vs 22.8%; P < .0001). Patients using prescription opioids for noncancer pain have complex pain, psychiatric, and substance use disorder comorbidities. Longitudinal data will reveal whether long-term opioid therapy leads to depression or other mood disturbances such as anhedonia and vital exhaustion. PERSPECTIVE: This study reports baseline characteristics of a new prospective, noncancer pain cohort study. Risk factors for adverse opioid outcomes were most common in those with depression and vital exhaustion and less common in dysthymia and anhedonia. Baseline data highlight the complexity of patients receiving long-term opioid therapy for noncancer pain.
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Affiliation(s)
- Scott Secrest
- Department of Family and Community Medicine, Saint Louis University School of Medicine, 1008 S. Spring, St. Louis, MO. 63110 U.S.A
| | - Lisa R. Miller-Matero
- Center for Health Policy and Health Services Research and Behavioral Health Services, Henry Ford Health, One Ford Place, Detroit, MI. 48202
| | - Timothy Chrusciel
- Department of Family and Community Medicine, Saint Louis University School of Medicine, 1008 S. Spring, St. Louis, MO. 63110 U.S.A
- Advanced HEAlth Data (AHEAD) Research Institute, Saint Louis University School of Medicine, 3545 Lafayette Ave, 4 Floor, St. Louis, MO. 63104 U.S.A
- Department of Health and Clinical Outcomes Research, Saint Louis University School of Medicine, 3545 Lafayette Ave, 4th Floor, St. Louis, MO. 63104 U.S.A
| | - Joanne Salas
- Department of Family and Community Medicine, Saint Louis University School of Medicine, 1008 S. Spring, St. Louis, MO. 63110 U.S.A
- Advanced HEAlth Data (AHEAD) Research Institute, Saint Louis University School of Medicine, 3545 Lafayette Ave, 4 Floor, St. Louis, MO. 63104 U.S.A
| | - Mark D. Sullivan
- Department of Psychiatry and Behavioral Science, University of Washington School of Medicine, 1959 NE Pacific Street, Seattle WA. 98195
| | - Celeste Zabel
- Center for Health Policy and Health Services Research and Behavioral Health Services, Henry Ford Health, One Ford Place, Detroit, MI. 48202
| | - Patrick Lustman
- Department of Psychiatry, Washington University School of Medicine, 4320 Forest Park Blvd, Suite 301, St. Louis, MO. 63108
| | - Brian Ahmedani
- Center for Health Policy and Health Services Research and Behavioral Health Services, Henry Ford Health, One Ford Place, Detroit, MI. 48202
| | - Ryan W. Carpenter
- Department of Psychological Sciences, University of Missouri-St. Louis, 1 University Blvd., Saint Louis, MO. 63121
| | - Jeffrey F. Scherrer
- Department of Family and Community Medicine, Saint Louis University School of Medicine, 1008 S. Spring, St. Louis, MO. 63110 U.S.A
- Department of Psychiatry and Behavioral Neuroscience, Saint Louis University School of Medicine, 1438 South Grand Blvd. St. Louis, MO 63104 U.S.A
- Advanced HEAlth Data (AHEAD) Research Institute, Saint Louis University School of Medicine, 3545 Lafayette Ave, 4 Floor, St. Louis, MO. 63104 U.S.A
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Baliki MN, Vigotsky AD, Rached G, Jabakhanji R, Huang L, Branco P, Cong O, Griffith J, Wasan AD, Schnitzer TJ, Apkarian AV. Neuropsychology of chronic back pain managed with long-term opioid use. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2024:2024.02.07.24302408. [PMID: 38370783 PMCID: PMC10871381 DOI: 10.1101/2024.02.07.24302408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Chronic pain is commonly treated with long-term opioids, but the neuropsychological outcomes associated with stable long-duration opioid use remain unclear. Here, we contrasted the psychological profiles, brain activity, and brain structure of 70 chronic back pain patients on opioids (CBP+O, average opioid exposure 6.2 years) with 70 patients managing their pain without opioids. CBP+O exhibited moderately worse psychological profiles and small differences in brain morphology. However, CBP+O had starkly different spontaneous brain activity, dominated by increased mesocorticolimbic and decreased dorsolateral-prefrontal activity, even after controlling for pain intensity and duration. These differences strongly reflected cortical opioid and serotonin receptor densities and mapped to two antagonistic resting-state circuits. The circuits' dynamics were explained by mesocorticolimbic activity and reflected negative affect. We reassessed a sub-group of CBP+O after they briefly abstained from taking opioids. Network dynamics, but not spontaneous activity, reflected exacerbated signs of withdrawal. Our results have implications for the management and tapering of opioids in chronic pain.
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Affiliation(s)
- Marwan N Baliki
- Center for Translational Pain Research, Northwestern University, Chicago, Illinois
- Physical Medicine and Rehabilitation, Northwestern University, Chicago, Illinois
- Shirley Ryan AbilityLab, Chicago, Illinois
| | - Andrew D Vigotsky
- Center for Translational Pain Research, Northwestern University, Chicago, Illinois
- Biomedical Engineering and Statistics & Data Science, Northwestern University, Chicago, Illinois
| | - Gaelle Rached
- Center for Translational Pain Research, Northwestern University, Chicago, Illinois
- Department of Neuroscience, Northwestern University, Chicago, Illinois
| | - Rami Jabakhanji
- Center for Translational Pain Research, Northwestern University, Chicago, Illinois
- Department of Neuroscience, Northwestern University, Chicago, Illinois
| | - Lejian Huang
- Center for Translational Pain Research, Northwestern University, Chicago, Illinois
- Department of Neuroscience, Northwestern University, Chicago, Illinois
| | - Paulo Branco
- Center for Translational Pain Research, Northwestern University, Chicago, Illinois
- Department of Neuroscience, Northwestern University, Chicago, Illinois
- Department of Anesthesia, Northwestern University, Chicago, Illinois
| | - Olivia Cong
- Center for Translational Pain Research, Northwestern University, Chicago, Illinois
- Department of Neuroscience, Northwestern University, Chicago, Illinois
| | - James Griffith
- Center for Translational Pain Research, Northwestern University, Chicago, Illinois
- Medical and Social Sciences, Northwestern University, Chicago, Illinois
| | - Ajay D Wasan
- Department of Anesthesiology and Perioperative Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Thomas J Schnitzer
- Center for Translational Pain Research, Northwestern University, Chicago, Illinois
- Department of Anesthesia, Northwestern University, Chicago, Illinois
- Physical Medicine and Rehabilitation, Northwestern University, Chicago, Illinois
| | - A Vania Apkarian
- Center for Translational Pain Research, Northwestern University, Chicago, Illinois
- Department of Neuroscience, Northwestern University, Chicago, Illinois
- Department of Anesthesia, Northwestern University, Chicago, Illinois
- Physical Medicine and Rehabilitation, Northwestern University, Chicago, Illinois
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Taghizadehghalehjoughi A, Naldan ME, Yeni Y, Genc S, Hacimuftuoglu A, Isik M, Necip A, Bolat İ, Yildirim S, Beydemir S, Baykan M. Effect of fentanyl and remifentanil on neuron damage and oxidative stress during induction neurotoxicity. J Cell Mol Med 2024; 28:e18118. [PMID: 38332529 PMCID: PMC10853584 DOI: 10.1111/jcmm.18118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 12/06/2023] [Accepted: 01/02/2024] [Indexed: 02/10/2024] Open
Abstract
Opioids can be used for medical and non-medical purposes. Chronic pain such as cancer, as well as the frequent use of such drugs in places such as operating rooms and intensive care units, and in non-medical areas like drug abuse the effects and side effects of these drugs need to be examined in more detail. For this purpose, the effects of fentanyl and remifentanil drugs on neuroinflammation, oxidative stress and cholinesterase metabolism were investigated. Neuron cells (CRL-10742) were used for the evaluation of the toxicity of fentanyl and remifentanil. MTT, PON1 activity and total thiol levels for its effect on oxidative stress, AChE and BChE activities for its effect on the cholinergic system, and TNF, IL-8 and IL-10 gene levels for its neuroinflammation effect were determined. The highest neurotoxic dose of fentanyl and remifentanil was determined as 10 μg/mL. It was observed that the rate of neuron cells in this dose has decreased by up to 61.80% and 56.89%, respectively. The IL-8 gene expression level in both opioids was down-regulated while IL 10 gene level was up-regulated in a dose-dependent manner compared to the control. In our results, the TNF gene expression level differs between the two opioids. In the fentanyl group, it was seen to be up-regulated in a dose-dependent manner compared to the control. Fentanyl and remifentanil showed an inhibitory effect against PON1, while remifentanil showed an increase in total thiol levels. PON1, BChE and total thiol activities showed similarity with MTT.
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Affiliation(s)
| | - Muhammet Emin Naldan
- Department of Anesthesiology and ReanimationUniversity of Health Sciences, Hospital of CityErzurumTurkey
| | - Yesim Yeni
- Department of Medical Pharmacology, Faculty of MedicineAtaturk UniversityErzurumTurkey
| | - Sidika Genc
- Department of Medical Pharmacology, Faculty of MedicineBilecik Seyh Edebali UniversityBilecikTurkey
| | - Ahmet Hacimuftuoglu
- Department of Medical Pharmacology, Faculty of MedicineAtaturk UniversityErzurumTurkey
| | - Mesut Isik
- Department of Bioengineering, Faculty of EngineeringBilecik Seyh Edebali UniversityBilecikTurkey
| | - Adem Necip
- Department of Pharmacy Services, Vocational School of Health ServicesHarran UniversitySanlıurfaTurkey
| | - İsmail Bolat
- Department of Pathology, Faculty of Veterinary MedicineAtaturk UniversityErzurumTurkey
| | - Serkan Yildirim
- Department of Pathology, Faculty of Veterinary MedicineAtaturk UniversityErzurumTurkey
| | - Sukru Beydemir
- Department of Biochemistry, Faculty of PharmacyAnadolu UniversityEskisehirTurkey
- The Rectorate of Bilecik Seyh Edebali UniversityBilecikTurkey
| | - Mahmut Baykan
- Department of Microbiology, Faculty of MedicineBilecik Seyh Edebali UniversityBilecikTurkey
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8
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Nylander E, Stam F, Katila L, Zelleroth S, Birgersson J, Nyberg F, Hallberg M, Grönbladh A. Revisiting opioid toxicity: Cellular effects of six commonly used opioids. Scand J Pain 2024; 24:sjpain-2024-0038. [PMID: 39636779 DOI: 10.1515/sjpain-2024-0038] [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: 05/14/2024] [Accepted: 11/12/2024] [Indexed: 12/07/2024]
Abstract
OBJECTIVES There is an ongoing opioid crisis in the United States where the illicit and non-medical use of prescription opioids is associated with an increasing number of overdose deaths. Few studies have investigated opioid-induced effects on cell viability, and comparative studies are limited. Here, we examine the toxicity of six commonly used opioids: methadone, morphine, oxycodone, hydromorphone, ketobemidone, and fentanyl with respect to mitochondrial and membrane function in vitro. METHODS The opioids were tested in four different cell cultures: primary cortical cell cultures, human neuroblastoma SH-SY5Y cells, and both differentiated and undifferentiated neuroblastoma/glioma hybrid NG108-15 cells. The mitochondrial activity was assessed using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and the membrane integrity was assessed by measuring the leakage of lactate dehydrogenase. To compare the different opioids, the toxic dose (TD50) was calculated. RESULTS The results displayed a similar trend of opioid-reduced cell viability in all four cell cultures. The most toxic opioid was methadone, followed by fentanyl, while morphine was overall ranked as the least toxic opioid displaying little to no negative impact on cell viability. The remaining opioids varied in rank between the different cell types. CONCLUSION This in vitro study highlights opioid-dependent variations in toxicity across all four tested cell types, with methadone emerging as the most potent opioid.
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Affiliation(s)
- Erik Nylander
- The Beijer laboratory, Neuropharmacology and Addiction Research, Department of Pharmaceutical Biosciences, Uppsala University, SE-751 24, Uppsala, Sweden
| | - Frida Stam
- The Beijer laboratory, Neuropharmacology and Addiction Research, Department of Pharmaceutical Biosciences, Uppsala University, SE-751 24, Uppsala, Sweden
| | - Lenka Katila
- Department of Surgical Sciences, Uppsala University, SE-751 85, Uppsala, Sweden
| | - Sofia Zelleroth
- The Beijer laboratory, Neuropharmacology and Addiction Research, Department of Pharmaceutical Biosciences, Uppsala University, SE-751 24, Uppsala, Sweden
| | - Jennifer Birgersson
- The Beijer laboratory, Neuropharmacology and Addiction Research, Department of Pharmaceutical Biosciences, Uppsala University, SE-751 24, Uppsala, Sweden
| | - Fred Nyberg
- The Beijer laboratory, Neuropharmacology and Addiction Research, Department of Pharmaceutical Biosciences, Uppsala University, SE-751 24, Uppsala, Sweden
| | - Mathias Hallberg
- The Beijer laboratory, Neuropharmacology and Addiction Research, Department of Pharmaceutical Biosciences, Uppsala University, SE-751 24, Uppsala, Sweden
| | - Alfhild Grönbladh
- The Beijer laboratory, Neuropharmacology and Addiction Research, Department of Pharmaceutical Biosciences, Uppsala University, SE-751 24, Uppsala, Sweden
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9
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Baker AK, Park SH, Weber KA, Martucci KT. Reduced Spinal Cord Gray Matter in Patients with Fibromyalgia Using Opioids Long-term. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.05.02.23289401. [PMID: 37205383 PMCID: PMC10187444 DOI: 10.1101/2023.05.02.23289401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Objective Chronic pain involves alterations in brain gray matter volume (GMV). Moreover, opioid medications are known to reduce GMV in numerous brain regions involved in pain processing. However, no research has evaluated (1) chronic pain-related GMV alterations in the spinal cord or (2) the effect of opioids on spinal cord GMV. Accordingly, this study evaluated spinal cord GMV in health controls and patients with fibromyalgia who were using and not using opioids long-term. Methods We analyzed average C5 - C7 GMV of the spinal cord dorsal and ventral horns in separate female cohorts of healthy controls (HC, n = 30), fibromyalgia patients not using opioids (FMN, n = 31), and fibromyalgia patients using opioids long-term (FMO, n = 27). To assess the effect of group on average dorsal and ventral horn GMV, we conducted a one-way multivariate analysis of covariance. Results After controlling for age, we observed a significant effect of group on ventral horn GMV (p = 0.03, η2 = 0.09), and on dorsal horn GMV (p = 0.05, η2 = 0.08). Tukey's posthoc comparisons showed that, compared to HC participants, FMOs had significantly lower ventral (p = 0.01) and dorsal (p = 0.02) GMVs. Among FMOs only, ventral horn GMV was significantly positively associated with pain severity and interference, and both dorsal and ventral GMVs were significantly positively associated with cold pain tolerance. Conclusion Long-term opioid use may impact sensory processing in fibromyalgia via gray matter changes within the cervical spinal cord.
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Affiliation(s)
- Anne K. Baker
- Human Affect and Pain Neuroscience Laboratory, Department of Anesthesiology, Duke University School of Medicine, Durham NC 27710
- Center for Translational Pain Medicine, Duke University Medical Center, Durham NC 27710
| | - Su Hyoun Park
- Human Affect and Pain Neuroscience Laboratory, Department of Anesthesiology, Duke University School of Medicine, Durham NC 27710
- Center for Translational Pain Medicine, Duke University Medical Center, Durham NC 27710
| | - Kenneth A. Weber
- Systems Neuroscience and Pain Lab, Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School fo Medicine, Palo Alto, CA 94304
| | - Katherine T. Martucci
- Human Affect and Pain Neuroscience Laboratory, Department of Anesthesiology, Duke University School of Medicine, Durham NC 27710
- Center for Translational Pain Medicine, Duke University Medical Center, Durham NC 27710
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10
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Hans Z, Belzer M. Gender Wage Gap and Male Perpetrated Child Sexual Abuse. RESEARCH SQUARE 2023:rs.3.rs-2857277. [PMID: 37162895 PMCID: PMC10168437 DOI: 10.21203/rs.3.rs-2857277/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Given the fact that child abuse and intimate partner violence often co-occur, intra-household bargaining models provide a useful framework to investigate the relationship between macro-economic factors and child sexual abuse (CSA). Non-cooperative bargaining models predict that labor market opportunities that benefit women improve their bargaining power and lead to lower levels of intimate partner violence against them. We posit that this protective effect extends to children as well, and exploit exogenous variation in macro-economic factors to examine the impact of gender specific wages and employment on police reported CSA in South Carolina, Tennessee, and Virginia from 2006 to 2019. The empirical analysis provides evidence that narrowing the gender wage gap leads to a decline in police reported CSA incidents perpetrated by mothers' intimate partners, whereas improvements in relative employment opportunities do not yield any such effects. Consistent with previous literature, our results show that wages, not employment, determine bargaining power. The findings also underscore important spillover benefits of policy solutions directed towards narrowing the gender wage gap.
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11
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Nickerson K, Lieschke G, Rajappa H, Smith A, Inder KJ. A scoping review of outpatient interventions to support the reduction of prescription opioid medication for chronic non cancer pain. J Clin Nurs 2022; 31:3368-3389. [PMID: 35132707 PMCID: PMC9790561 DOI: 10.1111/jocn.16235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 12/27/2021] [Accepted: 01/14/2022] [Indexed: 12/30/2022]
Abstract
BACKGROUND Prescription opioid use is a global health issue. Previous systematic reviews have not identified that any specific intervention supports prescription opioid reduction effectively. In keeping with the nature of a scoping review, this review details an overview of the existing literature on this topic, with quality of evidence being discussed rather than formally analysed. AIM This review aimed to examine and describe outpatient interventions that support the reduction of prescription opioid medication for chronic non cancer pain. ELIGIBILITY CRITERIA Abstracts were reviewed against the inclusion criteria of outpatient clinical interventions, for the purpose of prescription opioid dose reduction, offered to adults with CNCP. SOURCES OF EVIDENCE Following a structured review approach an electronic database search, of Medline, Embase, Cochrane, Cinahl, and Proquest and grey literature was undertaken. Search results were screened by title for relevance. CHARTING METHODS Two reviewers adhering to the PRISMA-ScR checklist charted and assessed studies for quality using Critical Appraisal Skills Programme checklist assessment tools. Extracted data were collated and synthesised for presentation as a tabular and narrative review. RESULTS From the initial search of 5089 papers, 19 underwent full-text review and quality appraisal. A variety of interventions were described to support reduction in prescription opioid use, however only one study of at least fair quality was able to demonstrate a demonstrated a statistically significant benefit in reducing measured opioid dose compared with a control group. Interventions were implemented in both specialist pain services and in primary care with multidisciplinary and interdisciplinary clinician care. Barriers and facilitators were observed in both settings. CONCLUSION AND IMPLICATIONS FOR CLINICAL PRACTICE Further rigorous research needs to be conducted to conclusively answer the question of what outpatient interventions support opioid reduction in chronic non cancer pain. This scoping review is the first step of inquiry in the development of a nursing intervention to support reduction of prescription opioids.
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Affiliation(s)
- Kathie Nickerson
- Hunter Integrated Pain ServiceHunter New England Local Health DistrictNew LambtonNew South WalesAustralia
- School of Nursing and MidwiferyUniversity of NewcastleCallaghanNew South WalesAustralia
| | - Gena Lieschke
- Hunter Integrated Pain ServiceHunter New England Local Health DistrictNew LambtonNew South WalesAustralia
- School of Nursing and MidwiferyUniversity of NewcastleCallaghanNew South WalesAustralia
- Nursing and Midwifery Research CentreHunter New England Health Local Health DistrictNewcastleNew South WalesAustralia
| | - Hema Rajappa
- Hunter Integrated Pain ServiceHunter New England Local Health DistrictNew LambtonNew South WalesAustralia
- School of Medicine and Public HealthUniversity of NewcastleCallaghanNew South WalesAustralia
- Hunter Medical Research InstituteNew LambtonNew South WalesAustralia
| | - Angela Smith
- Hunter New England Health LibrariesNew LambtonNew South WalesAustralia
| | - Kerry Jill Inder
- School of Nursing and MidwiferyUniversity of NewcastleCallaghanNew South WalesAustralia
- Hunter Medical Research InstituteNew LambtonNew South WalesAustralia
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12
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Zhou Z, Hui ES, Kranz GS, Chang JR, de Luca K, Pinto SM, Chan WW, Yau SY, Chau BK, Samartzis D, Jensen MP, Wong AYL. Potential mechanisms underlying the accelerated cognitive decline in people with chronic low back pain: A scoping review. Ageing Res Rev 2022; 82:101767. [PMID: 36280211 DOI: 10.1016/j.arr.2022.101767] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 09/13/2022] [Accepted: 10/20/2022] [Indexed: 01/31/2023]
Abstract
A growing body of evidence has shown that people with chronic low back pain (CLBP) demonstrate significantly greater declines in multiple cognitive domains than people who do not have CLBP. Given the high prevalence of CLBP in the ever-growing aging population that may be more vulnerable to cognitive decline, it is important to understand the mechanisms underlying the accelerated cognitive decline observed in this population, so that proper preventive or treatment approaches can be developed and implemented. The current scoping review summarizes what is known regarding the potential mechanisms underlying suboptimal cognitive performance and cognitive decline in people with CLBP and discusses future research directions. Five potential mechanisms were identified based on the findings from 34 included studies: (1) altered activity in the cortex and neural networks; (2) grey matter atrophy; (3) microglial activation and neuroinflammation; (4) comorbidities associated with CLBP; and (5) gut microbiota dysbiosis. Future studies should deepen the understanding of mechanisms underlying this association so that proper prevention and treatment strategies can be developed.
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Affiliation(s)
- Zhixing Zhou
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong Special Adminstrative Region, China
| | - Edward S Hui
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong Special Adminstrative Region, China
| | - Georg S Kranz
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong Special Adminstrative Region, China; Department of Psychiatry and Psychotherapy, Medical University of Vienna, Austria; The State Key Laboratory of Brain and Cognitive Sciences, The Hong Kong Polytechnic University, Hong Kong Special Adminstrative Region, China
| | - Jeremy R Chang
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong Special Adminstrative Region, China
| | - Katie de Luca
- School of Health, Medical and Applied Sciences, CQ University, Brisbane, Australia
| | - Sabina M Pinto
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong Special Adminstrative Region, China
| | - Winnie Wy Chan
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong Special Adminstrative Region, China
| | - Suk-Yu Yau
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong Special Adminstrative Region, China; Research Institute of Smart Ageing, The Hong Kong Polytechnic University, Hong Kong Special Adminstrative Region, China
| | - Bolton Kh Chau
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong Special Adminstrative Region, China
| | - Dino Samartzis
- Department of Orthopedic Surgery, Rush University Medical Centre, Chicago, IL, USA
| | - Mark P Jensen
- Department of Rehabilitation Medicine, University of Washington, Seattle, WA, USA
| | - Arnold Y L Wong
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong Special Adminstrative Region, China; Research Institute of Smart Ageing, The Hong Kong Polytechnic University, Hong Kong Special Adminstrative Region, China.
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13
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Abstract
Psychiatric illness is associated with both chronic pain syndromes and opioid use disorder, further complicating how we care for patients with psychiatric issues. We report a unique case of a de novo and persistent psychotic disorder after complicated opioid withdrawal in a patient without any psychiatric history. The patient developed persistent auditory hallucinations after discontinuation of chronic opioid therapy that responded only to atypical antipsychotic (olanzapine) treatment. This case illustrates the neuropsychiatric effects of chronic opioid exposure, as well as layered clinical management dimensions related to opioid detoxification and psychosis treatment. Long-term opioid therapy may have lasting neuropsychiatric effects, including playing a role in the development and/or expression of psychotic disorders. Here we review the limited literature on the effects of opioids on psychosis. This complex case also demonstrates a clinical approach for effectively co-managing psychiatric symptoms in the context of chronic pain and chronic opioid therapy.
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14
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Tajerian M, Amrami M, Betancourt JM. Is there hemispheric specialization in the chronic pain brain? Exp Neurol 2022; 355:114137. [PMID: 35671801 PMCID: PMC10723052 DOI: 10.1016/j.expneurol.2022.114137] [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: 02/01/2022] [Revised: 05/31/2022] [Accepted: 06/01/2022] [Indexed: 11/25/2022]
Abstract
Organismal bilateral symmetry is associated with near-identical halves of the central nervous system, with certain functions displaying specialization through one brain hemisphere. The processing of pain in the brain as well as brain plasticity in the context of painful injuries have garnered much attention in recent decades. Noninvasive brain imaging studies in pain-free human subjects have identified multiple brain regions that are linked to the sensory and affective components of pain. Longlasting adaptations in brains of chronic pain sufferers have likewise been described, suggesting a mechanism for pain chronification. Invasive molecular and biochemical studies in animal models have expanded on these findings, with added emphasis on the role of specific genes and molecules involved. To date, the extent of hemispheric asymmetry in the context of pain is not well-understood. This topical review evaluates the evidence of hemispheric specialization observed in humans and rodent models of pain and compares it to findings where such asymmetry is absent. Our review shows conflicting information regarding the existence of pain-related asymmetry, and if so, the side to which it can be localized. This could be due to the heterogeneity of pain processing pathways, heterogeneity in study parameters, as well as differences in data reporting. With the advent of progressively sophisticated non-invasive tools that can be used in human subjects, in addition to more precise methods to visualize and control specific brain regions or neuronal ensembles in animal models, we predict that the next few decades will witness a better understanding of the supraspinal control and processing of chronic pain, including the role of each of its hemispheres.
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Affiliation(s)
- Maral Tajerian
- Department of Biology, Queens College, City University of New York, Queens, NY 11367, USA; The Graduate Center, City University of New York, New York, NY 10016, USA.
| | - Michael Amrami
- Department of Biology, Queens College, City University of New York, Queens, NY 11367, USA
| | - John Michael Betancourt
- Neuroscience Graduate Program, Graduate School of Medical Sciences, Weill Cornell Medicine, New York, NY 10021, USA
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15
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Warner NS, Mielke MM, Verdoorn BP, Knopman DS, Hooten WM, Habermann EB, Warner DO. Pain, Opioid Analgesics, and Cognition: A Conceptual Framework in Older Adults. PAIN MEDICINE 2022; 24:171-181. [PMID: 35913452 PMCID: PMC9890310 DOI: 10.1093/pm/pnac113] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 07/18/2022] [Accepted: 07/20/2022] [Indexed: 02/06/2023]
Abstract
Chronic pain is highly prevalent in older adults and is associated with poor functional outcomes. Furthermore, opioid analgesics are commonly utilized for the treatment of pain in older adults despite well-described adverse effects. Importantly, both chronic pain and opioid analgesics have been linked with impairments in cognitive function, though data are limited. In this manuscript we summarize the evidence and critical knowledge gaps regarding the relationships between pain, opioid analgesics, and cognition in older adults. Furthermore, we provide a conceptual framework to guide future research in the development, implementation, and evaluation of strategies to optimize analgesic outcomes in older adults while minimizing deleterious effects on cognition.
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Affiliation(s)
- Nafisseh S Warner
- Correspondence to: Nafisseh S. Warner, MD, Department of Anesthesiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA. Tel: (507)284-2511; Fax: (507)266-7732; E-mail:
| | - Michelle M Mielke
- Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota, USA
| | | | - David S Knopman
- Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA
| | - William M Hooten
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Elizabeth B Habermann
- Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, Minnesota, USA,Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota, USA
| | - David O Warner
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, Minnesota, USA
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16
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Scherrer JF, Salas J, Miller-Matero LR, Sullivan MD, Ballantyne JC, Debar L, Grucza RA, Lustman PJ, Ahmedani B. Long-term prescription opioid users' risk for new-onset depression increases with frequency of use. Pain 2022; 163:1581-1589. [PMID: 34855645 DOI: 10.1097/j.pain.0000000000002547] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 11/19/2021] [Indexed: 11/26/2022]
Abstract
ABSTRACT Long-term opioid therapy (LTOT) is associated with increased risk for depression. It is not known if the frequency of opioid use during LTOT is associated with new-onset depression. We used Optum's de-identified Integrated Claims-Clinical dataset (2010-2018) to create a cohort of 5146 patients, 18 to 80 years of age, with an encounter or claims in the year before new LTOT. New LTOT was defined by >90-day opioid use after remaining opioid free for 6 months. Opioid use frequency during the first 90 days of LTOT was categorized into occasional use (<50% days covered), intermittent use (50% to <80% days covered), frequent use (80% to <90% days covered), and daily use (≥90% days covered). Propensity scores and inverse probability of exposure weighting controlled for confounding in models estimating risk for new-onset depression. Patients were on average 54.5 (SD ± 13.6) years of age, 55.7% were female, 72.5% were White, and 9.5% were African American. After controlling for confounding, daily users (hazard ratio = 1.40; 95% confidence interval: 1.14-1.73) and frequent users (hazard ratio = 1.34; 95% confidence interval: 1.05-1.71) were significantly more likely to develop new-onset depression compared with occasional users. This association remained after accounting for the contribution of post-index pain diagnoses and opioid use disorder. In LTOT, risk for new depression episodes is up to 40% greater in near-daily users compared with occasional users. Patients could reduce depression risk by avoiding opioid use on as many low pain days as possible. Repeated screening for depression during LTOT is warranted.
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Affiliation(s)
- Jeffrey F Scherrer
- Department of Family and Community Medicine, Saint Louis University School of Medicine, St. Louis, MO, United States
- Advanced HEAlth Data (AHEAD) Research Institute, Saint Louis University School of Medicine, St. Louis, MO, United States
| | - Joanne Salas
- Department of Family and Community Medicine, Saint Louis University School of Medicine, St. Louis, MO, United States
- Advanced HEAlth Data (AHEAD) Research Institute, Saint Louis University School of Medicine, St. Louis, MO, United States
| | - Lisa R Miller-Matero
- Center for Health Policy and Health Services Research and Behavioral Health Services, Henry Ford Health System, One Ford Place, Detroit, MI, United States
| | - Mark D Sullivan
- Department of Psychiatry and Behavioral Science, University of Washington School of Medicine, Seattle, WA, United States
| | - Jane C Ballantyne
- Department of Anesthesiology and Pain Medicine, University of Washington, Seattle, WA, United States
| | - Lynn Debar
- Kaiser Permanente Washington Health Research Institute, Seattle, WA, United States
| | - Richard A Grucza
- Department of Family and Community Medicine, Saint Louis University School of Medicine, St. Louis, MO, United States
- Advanced HEAlth Data (AHEAD) Research Institute, Saint Louis University School of Medicine, St. Louis, MO, United States
| | - Patrick J Lustman
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO, United States
| | - Brian Ahmedani
- Center for Health Policy and Health Services Research and Behavioral Health Services, Henry Ford Health System, One Ford Place, Detroit, MI, United States
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17
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Park SH, Baker AK, Krishna V, Mackey SC, Martucci KT. Altered resting-state functional connectivity within corticostriatal and subcortical-striatal circuits in chronic pain. Sci Rep 2022; 12:12683. [PMID: 35879602 PMCID: PMC9314446 DOI: 10.1038/s41598-022-16835-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 07/18/2022] [Indexed: 11/09/2022] Open
Abstract
Brain corticostriatal circuits are important for understanding chronic pain and highly relevant to motivation and cognitive processes. It has been demonstrated that in patients with chronic back pain, altered nucleus accumbens (NAcc)-medial prefrontal cortex (MPFC) circuit fMRI-based activity is predictive of patient outcome. We evaluated the NAcc-MPFC circuit in patients with another chronic pain condition, fibromyalgia, to extend these important findings. First, we compared fMRI-based NAcc-MPFC resting-state functional connectivity in patients with fibromyalgia (N = 32) vs. healthy controls (N = 37). Compared to controls, the NAcc-MPFC circuit's connectivity was significantly reduced in fibromyalgia. In addition, within the fibromyalgia group, NAcc-MPFC connectivity was significantly correlated with trait anxiety. Our expanded connectivity analysis of the NAcc to subcortical brain regions showed reduced connectivity of the right NAcc with mesolimbic circuit regions (putamen, thalamus, and ventral pallidum) in fibromyalgia. Lastly, in an exploratory analysis comparing our fibromyalgia and healthy control cohorts to a separate publicly available dataset from patients with chronic back pain, we identified reduced NAcc-MPFC connectivity across both the patient groups with unique alterations in NAcc-mesolimbic connectivity. Together, expanding upon prior observed alterations in brain corticostriatal circuits, our results provide novel evidence of altered corticostriatal and mesolimbic circuits in chronic pain.
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Affiliation(s)
- Su Hyoun Park
- Department of Anesthesiology, Duke University Medical Center, Durham, USA
- Duke Center for Translational Pain Medicine, Durham, USA
- Human Affect and Pain Neuroscience Lab, Department of Anesthesiology, Duke University Medical Center, Box DUMC 3094, Durham, NC, 27710, USA
| | - Anne K Baker
- Department of Anesthesiology, Duke University Medical Center, Durham, USA
- Duke Center for Translational Pain Medicine, Durham, USA
- Human Affect and Pain Neuroscience Lab, Department of Anesthesiology, Duke University Medical Center, Box DUMC 3094, Durham, NC, 27710, USA
| | - Vinit Krishna
- Department of Anesthesiology, Duke University Medical Center, Durham, USA
- Duke Center for Translational Pain Medicine, Durham, USA
- Human Affect and Pain Neuroscience Lab, Department of Anesthesiology, Duke University Medical Center, Box DUMC 3094, Durham, NC, 27710, USA
| | - Sean C Mackey
- Department of Anesthesiology, Perioperative, and Pain Medicine, Stanford University School of Medicine, Stanford, USA
| | - Katherine T Martucci
- Department of Anesthesiology, Duke University Medical Center, Durham, USA.
- Duke Center for Translational Pain Medicine, Durham, USA.
- Human Affect and Pain Neuroscience Lab, Department of Anesthesiology, Duke University Medical Center, Box DUMC 3094, Durham, NC, 27710, USA.
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18
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Nass SR, Ohene-Nyako M, Hahn YK, Knapp PE, Hauser KF. Neurodegeneration Within the Amygdala Is Differentially Induced by Opioid and HIV-1 Tat Exposure. Front Neurosci 2022; 16:804774. [PMID: 35600626 PMCID: PMC9115100 DOI: 10.3389/fnins.2022.804774] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 03/24/2022] [Indexed: 11/25/2022] Open
Abstract
Opioid use disorder (OUD) is a critical problem that contributes to the spread of HIV and may intrinsically worsen neuroHIV. Despite the advent of combined antiretroviral therapies (cART), about half of persons infected with HIV (PWH) experience cognitive and emotional deficits that can be exacerbated by opioid abuse. HIV-1 Tat is expressed in the central nervous system (CNS) of PWH on cART and is thought to contribute to neuroHIV. The amygdala regulates emotion and memories associated with fear and stress and is important in addiction behavior. Notwithstanding its importance in emotional saliency, the effects of HIV and opioids in the amygdala are underexplored. To assess Tat- and morphine-induced neuropathology within the amygdala, male Tat transgenic mice were exposed to Tat for 8 weeks and administered saline and/or escalating doses of morphine twice daily (s.c.) during the last 2 weeks of Tat exposure. Eight weeks of Tat exposure decreased the acoustic startle response and the dendritic spine density in the basolateral amygdala, but not the central nucleus of the amygdala. In contrast, repeated exposure to morphine alone, but not Tat, increased the acoustic startle response and whole amygdalar levels of amyloid-β (Aβ) monomers and oligomers and tau phosphorylation at Ser396, but not neurofilament light chain levels. Co-exposure to Tat and morphine decreased habituation and prepulse inhibition to the acoustic startle response and potentiated the morphine-induced increase in Aβ monomers. Together, our findings indicate that sustained Tat and morphine exposure differentially promote synaptodendritic degeneration within the amygdala and alter sensorimotor processing.
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Affiliation(s)
- Sara R. Nass
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, United States
| | - Michael Ohene-Nyako
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, United States
| | - Yun K. Hahn
- Department of Anatomy and Neurobiology, Virginia Commonwealth University, Richmond, VA, United States
| | - Pamela E. Knapp
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, United States
- Department of Anatomy and Neurobiology, Virginia Commonwealth University, Richmond, VA, United States
- Institute for Drug and Alcohol Studies, Virginia Commonwealth University, Richmond, VA, United States
| | - Kurt F. Hauser
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, United States
- Department of Anatomy and Neurobiology, Virginia Commonwealth University, Richmond, VA, United States
- Institute for Drug and Alcohol Studies, Virginia Commonwealth University, Richmond, VA, United States
- *Correspondence: Kurt F. Hauser,
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19
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Aneizi A, Sajak PMJ, Alqazzaz A, Weir T, Burt CI, Ventimiglia DJ, Leong NL, Packer JD, Henn RF. Impact of Preoperative Opioid Use on 2-Year Patient-Reported Outcomes in Knee Surgery Patients. J Knee Surg 2022; 35:511-520. [PMID: 32898898 DOI: 10.1055/s-0040-1716358] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The objectives of this study are to assess perioperative opioid use in patients undergoing knee surgery and to examine the relationship between preoperative opioid use and 2-year postoperative patient-reported outcomes (PROs). We hypothesized that preoperative opioid use and, more specifically, higher quantities of preoperative opioid use would be associated with worse PROs in knee surgery patients. We studied 192 patients undergoing knee surgery at a single urban institution. Patients completed multiple PRO measures preoperatively and 2-year postoperatively, including six patient-reported outcomes measurement information system (PROMIS) domains; the International Knee Documentation Committee (IKDC) questionnaire, numeric pain scale (NPS) scores for the operative knee and the rest of the body, Marx's knee activity rating scale, Tegner's activity scale, International Physical Activity Questionnaire, as well as measures of met expectations, overall improvement, and overall satisfaction. Total morphine equivalents (TMEs) were calculated from a regional prescription monitoring program. Eighty patients (41.7%) filled an opioid prescription preoperatively, and refill TMEs were significantly higher in this subpopulation. Opioid use was associated with unemployment, government insurance, smoking, depression, history of prior surgery, higher body mass index, greater comorbidities, and lower treatment expectations. Preoperative opioid use was associated with significantly worse 2-year scores on most PROs, including PROMIS physical function, pain interference, fatigue, social satisfaction, IKDC, NPS for the knee and rest of the body, and Marx's and Tegner's scales. There was a significant dose-dependent association between greater preoperative TMEs and worse scores for PROMIS physical function, pain interference, fatigue, social satisfaction, NPS body, and Marx's and Tegner's scales. Multivariable analysis confirmed that any preoperative opioid use, but not quantity of TMEs, was an independent predictor of worse 2-year scores for function, activity, and knee pain. Preoperative opioid use and TMEs were neither independent predictors of met expectations, satisfaction, patient-perceived improvement, nor improvement on any PROs. Our findings demonstrate that preoperative opioid use is associated with clinically relevant worse patient-reported knee function and pain after knee surgery.
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Affiliation(s)
- Ali Aneizi
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland
| | - Patrick M J Sajak
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland
| | - Aymen Alqazzaz
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland
| | - Tristan Weir
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland
| | - Cameran I Burt
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland
| | - Dominic J Ventimiglia
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland
| | - Natalie L Leong
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland
| | - Jonathan D Packer
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland
| | - R Frank Henn
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland
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20
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Association between chronic low back pain and regional brain atrophy in a Japanese older population: the Hisayama Study. Pain 2022; 163:2185-2193. [PMID: 35333827 DOI: 10.1097/j.pain.0000000000002612] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 01/25/2022] [Indexed: 11/26/2022]
Abstract
ABSTRACT Chronic low back pain (CLBP) is the leading cause of years lived with disability. Recently, it has been reported that CLBP is associated with alterations in the central nervous system. The present study aimed to investigate the association between CLBP and regional brain atrophy in an older Japanese population. A total of 1106 community-dwelling participants aged ≥65 years underwent brain magnetic resonance imaging scans and a health examination in 2017 to 2018. We used the FreeSurfer software for the analysis of brain magnetic resonance imaging. Chronic pain was defined as subjective pain for ≥3 months. Participants were divided into 3 groups according to the presence or absence of chronic pain and the body part that mainly suffered from pain: a "no chronic pain (NCP)" group (n = 541), "CLBP" group (n = 189), and "chronic pain in body parts other than the lower back (OCP)" group (n = 376). The brain volumes of the ventrolateral and dorsolateral prefrontal cortex, the posterior cingulate gyrus, and the amygdala were significantly lower in the CLBP group than in the NCP group after adjustment for sociodemographic, physical, and lifestyle factors and depressive symptoms. In addition, the left superior frontal gyrus was identified as a significant cluster by the Query, Design, Estimate, Contrast interface. There were no significant differences in the brain volumes of pain-related regions between the NCP and the OCP groups. The present study suggests that CLBP is associated with lower brain volumes of pain-related regions in a general older population of Japanese.
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21
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Lai H, Mubashir T, Shiwalkar N, Ahmad H, Balogh J, Williams G, Bauer C, Maroufy V. Association of pre-admission opioid abuse and/or dependence on major complications in traumatic brain injury (TBI) patients. J Clin Anesth 2022; 79:110719. [PMID: 35276593 DOI: 10.1016/j.jclinane.2022.110719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 02/23/2022] [Accepted: 02/28/2022] [Indexed: 11/17/2022]
Abstract
SETTING In the last few decades, an opioid related health crisis has been a challenging problem in many countries around the world, especially the United States. Better understanding of the association of pre-admission opioid abuse and/or dependence (POAD) on specific major complications in traumatic brain injury (TBI) patients can aid the medical team in improving patient care management and outcomes. STUDY OBJECTIVE Our goal is to assess and quantify the risk of POAD on in-hospital mortality and major complications in TBI patients. DESIGN We conducted a retrospective study and used the National Inpatient Sample (NIS) database from 2004 to 2015 to investigate the impact of POAD on in-hospital mortality and major complications in TBI patients. We utilized propensity score matching and conditional logistic regression models, adjusted with injury severity score (ISS) and comorbidities, to obtain the adjusted odds ratios (OR). MAIN RESULTS POAD TBI patients had lower risks of in-hospital mortality (OR 0.58; p < 0.001) and acute myocardial infarction (OR 0.53; p = 0.045), while a higher risk of respiratory (OR 1.59; p < 0.001) and neurologic complications (OR 2.54; p < 0.001), compared to non-POAD TBI patients. Additionally, POAD patients were significantly more likely to have sepsis (OR 2.16, p < 0.001), malnutrition (OR 1.56, p < 0.001), delirium (OR 2.81, p < 0.001), respiratory failure (OR 1.79, p < 0.001), and acute renal failure (OR 1.83, p < 0.001). POAD TBI patients had shorter length of hospital stay compared to non-POAD TBI patients (mean 8.0 vs 9.2 days, p < 0.001). CONCLUSIONS POAD TBI patients have a lower in-hospital mortality, shorter duration of hospitalization and a lower risk of acute myocardial infarction, while they are more likely to have respiratory failure, delirium, sepsis, malnutrition, and acute renal failure compared to TBI patients without POAD. Prospective study is warranted to further confirm these findings.
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Affiliation(s)
- Hongyin Lai
- Department of Biostatistics and Data Science, UTHealth School of Public Health, 1200 Pressler St, Houston, TX 77030, USA
| | - Talha Mubashir
- Department of Anesthesiology, UTHealth McGovern Medical School, 6410 Fannin St, Houston, TX 77030, USA
| | - Nimisha Shiwalkar
- Department of Anesthesiology and Critical Care, Zen Multispecialty Hospital and Research Center, Mumbai, India
| | - Hunza Ahmad
- Department of Anesthesiology, UTHealth McGovern Medical School, 6410 Fannin St, Houston, TX 77030, USA
| | - Julius Balogh
- Department of Anesthesiology, University of Arkansas for Medical Sciences, 4301 West Markham, #515, Little Rock, AR 72205, USA
| | - George Williams
- Department of Anesthesiology, UTHealth McGovern Medical School, 6410 Fannin St, Houston, TX 77030, USA
| | - Cici Bauer
- Department of Biostatistics and Data Science, UTHealth School of Public Health, 1200 Pressler St, Houston, TX 77030, USA
| | - Vahed Maroufy
- Department of Biostatistics and Data Science, UTHealth School of Public Health, 1200 Pressler St, Houston, TX 77030, USA.
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22
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Upadhyay J, Verrico CD, Cay M, Kodele S, Yammine L, Koob GF, Schreiber R. Neurocircuitry basis of the opioid use disorder-post-traumatic stress disorder comorbid state: conceptual analyses using a dimensional framework. Lancet Psychiatry 2022; 9:84-96. [PMID: 34774203 DOI: 10.1016/s2215-0366(21)00008-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 12/11/2020] [Accepted: 01/06/2021] [Indexed: 12/17/2022]
Abstract
Understanding the interface between opioid use disorder (OUD) and post-traumatic stress disorder (PTSD) is challenging. By use of a dimensional framework, such as research domain criteria, convergent and targetable neurobiological processes in OUD-PTSD comorbidity can be identified. We hypothesise that, in OUD-PTSD, circuitry that is implicated in two research domain criteria systems (ie, negative valence and cognitive control) underpins dysregulation of incentive salience, negative emotionality, and executive function. We also propose that the OUD-PTSD state might be systematically investigated with approaches outlined within a neuroclinical assessment framework for addictions and PTSD. Our dimensional analysis of the OUD-PTSD state shows how first-line therapeutic approaches (ie, partial μ-type opioid receptor [MOR1] agonism) modulate overlapping neurobiological and clinical features and also provides mechanistic rationale for evaluating polytherapeutic strategies (ie, partial MOR1 agonism, κ-type opioid receptor [KOR1] antagonism, and α-2A adrenergic receptor [ADRA2A] agonism). A combination of these therapeutic mechanisms is projected to facilitate recovery in patients with OUD-PTSD by mitigating negative valence states and enhancing executive control.
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Affiliation(s)
- Jaymin Upadhyay
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA; Department of Psychiatry, McLean Hospital, Harvard Medical School, Belmont, MA, USA.
| | - Christopher D Verrico
- Department of Psychiatry and Behavioral Sciences and Department of Pharmacology, Baylor College of Medicine, Houston, TX, USA
| | - Mariesa Cay
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA; Department of Psychiatry, McLean Hospital, Harvard Medical School, Belmont, MA, USA
| | - Sanda Kodele
- Faculty of Psychology and Neuroscience, Section Neuropsychology and Psychopharmacology, Maastricht University, Maastricht, Netherlands
| | - Luba Yammine
- Louis A Faillace Department of Psychiatry and Behavioral Sciences, University of Texas Health Science Center at Houston, McGovern Medical School, Houston, TX, USA
| | - George F Koob
- National Institute on Drug Abuse, National Institutes of Health, Bethesda, MD, USA
| | - Rudy Schreiber
- Faculty of Psychology and Neuroscience, Section Neuropsychology and Psychopharmacology, Maastricht University, Maastricht, Netherlands
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23
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Friedman BW. Peripheral Nerve Blocks for Headache: A Precise Approach to Pain Management in the Emergency Department. Ann Emerg Med 2021; 79:262-264. [PMID: 34952731 DOI: 10.1016/j.annemergmed.2021.11.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Indexed: 11/01/2022]
Affiliation(s)
- Benjamin W Friedman
- Department of Emergency Medicine, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY.
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24
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Zhang T, Hou Q, Bai T, Ji G, Lv H, Xie W, Jin S, Yang J, Qiu B, Tian Y, Wang K. Functional and structural alterations in the pain-related circuit in major depressive disorder induced by electroconvulsive therapy. J Neurosci Res 2021; 100:477-489. [PMID: 34825381 DOI: 10.1002/jnr.24979] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 08/08/2021] [Accepted: 09/25/2021] [Indexed: 12/12/2022]
Abstract
Approximately two-thirds of major depressive disorder (MDD) patients have pain, which exacerbates the severity of depression. Electroconvulsive therapy (ECT) is an efficacious treatment that can alleviate depressive symptoms; however, treatment for pain and the underlying neural substrate is elusive. We enrolled 34 patients with MDD and 33 matched healthy controls to complete clinical assessments and neuroimaging scans. MDD patients underwent second assessments and scans after ECT. We defined a pain-related network with a published meta-analysis and calculated topological patterns to reveal topologic alterations induced by ECT. Using the amplitude of low-frequency fluctuations (ALFFs), we probed local function aberrations of pain-related circuits in MDD patients. Subsequently, we applied gray matter volume (GMV) to reveal structural alterations of ECT relieving pain. The relationships between functional and structural aberrations and pain were determined. ECT significantly alleviated pain. The neural mechanism based on pain-related circuits indicated that ECT weakened the circuit function (ALFF: left amygdala and right supplementary motor area), while augmenting the structure (GMV: bilateral amygdala/insula/hippocampus and anterior cingulate cortex). The topologic patterns became less efficient after ECT. Correlation analysis between the change in pain and GMV had negative results in bilateral amygdala/insula/hippocampus. Similarity, there was a positive correlation between a change in ALFF in the left amygdala and improved clinical symptoms. ECT improved pain by decreasing brain local function and global network patterns, while increasing structure in pain-related circuits. Functional and structural alterations were associated with improvement in pain.
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Affiliation(s)
- Ting Zhang
- Department of Neurology, The First Affiliated Hospital of Anhui Medical University, Hefei, China.,Anhui Province Key Laboratory of Cognition and Neuropsychiatric Disorders, Hefei, China.,Collaborative Innovation Center of Neuropsychiatric Disorders and Mental Health, Hefei, China
| | - Qiangqiang Hou
- Department of Neurology, The First Affiliated Hospital of Anhui Medical University, Hefei, China.,Anhui Province Key Laboratory of Cognition and Neuropsychiatric Disorders, Hefei, China.,Collaborative Innovation Center of Neuropsychiatric Disorders and Mental Health, Hefei, China
| | - Tongjian Bai
- Department of Neurology, The First Affiliated Hospital of Anhui Medical University, Hefei, China.,Anhui Province Key Laboratory of Cognition and Neuropsychiatric Disorders, Hefei, China.,Collaborative Innovation Center of Neuropsychiatric Disorders and Mental Health, Hefei, China
| | - Gongjun Ji
- Department of Neurology, The First Affiliated Hospital of Anhui Medical University, Hefei, China.,Anhui Province Key Laboratory of Cognition and Neuropsychiatric Disorders, Hefei, China.,Collaborative Innovation Center of Neuropsychiatric Disorders and Mental Health, Hefei, China
| | - Huaming Lv
- Department of Neurology, The First Affiliated Hospital of Anhui Medical University, Hefei, China.,Anhui Province Key Laboratory of Cognition and Neuropsychiatric Disorders, Hefei, China.,Collaborative Innovation Center of Neuropsychiatric Disorders and Mental Health, Hefei, China
| | - Wen Xie
- Anhui Mental Health Center, Hefei, China
| | | | - Jinying Yang
- Center for Biomedical Engineering, University of Science and Technology of China, Hefei, China
| | - Bensheng Qiu
- Center for Biomedical Engineering, University of Science and Technology of China, Hefei, China
| | - Yanghua Tian
- Department of Neurology, The First Affiliated Hospital of Anhui Medical University, Hefei, China.,Anhui Province Key Laboratory of Cognition and Neuropsychiatric Disorders, Hefei, China.,Collaborative Innovation Center of Neuropsychiatric Disorders and Mental Health, Hefei, China.,Institute of Artificial Intelligence, Hefei Comprehensive National Science Center, Hefei, China
| | - Kai Wang
- Department of Neurology, The First Affiliated Hospital of Anhui Medical University, Hefei, China.,Anhui Province Key Laboratory of Cognition and Neuropsychiatric Disorders, Hefei, China.,Collaborative Innovation Center of Neuropsychiatric Disorders and Mental Health, Hefei, China.,Institute of Artificial Intelligence, Hefei Comprehensive National Science Center, Hefei, China.,School of Mental Health and Psychological Sciences, Anhui Medical University, Hefei, China
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25
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Troiani V, Crist RC, Doyle GA, Ferraro TN, Beiler D, Ranck S, McBryan K, Jarvis MA, Barbour JS, Han JJ, Ness RJ, Berrettini WH, Robishaw JD. Genetics and prescription opioid use (GaPO): study design for consenting a cohort from an existing biobank to identify clinical and genetic factors influencing prescription opioid use and abuse. BMC Med Genomics 2021; 14:253. [PMID: 34702274 PMCID: PMC8547564 DOI: 10.1186/s12920-021-01100-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 10/15/2021] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Prescription opioids (POs) are commonly used to treat moderate to severe chronic pain in the health system setting. Although they improve quality of life for many patients, more work is needed to identify both the clinical and genetic factors that put certain individuals at high risk for developing opioid use disorder (OUD) following use of POs for pain relief. With a greater understanding of important risk factors, physicians will be better able to identify patients at highest risk for developing OUD for whom non-opioid alternative therapies and treatments should be considered. METHODS We are conducting a prospective observational study that aims to identify the clinical and genetic factors most stongly associated with OUD. The study design leverages an existing biobank that includes whole exome sequencing and array genotyping. The biobank is maintained within an integrated health system, allowing for the large-scale capture and integration of genetic and non-genetic data. Participants are enrolled into the health system biobank via informed consent and then into a second study that focuses on opioid medication use. Data capture includes validated self-report surveys measuring addiction severity, depression, anxiety, and nicotine use, as well as additional clinical, prescription, and brain imaging data extracted from electronic health records. DISCUSSION We will harness this multimodal data capture to establish meaningful patient phenotypes in order to understand the genetic and non-genetic contributions to OUD.
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Affiliation(s)
- Vanessa Troiani
- Geisinger Clinic, Geisinger, Danville, PA, USA.
- Department of Translational Data Science and Informatics, Geisinger, Danville, PA, USA.
- Neuroscience Institute, Geisinger, Danville, PA, USA.
- Department of Basic Sciences, Geisinger Commonwealth School of Medicine, Scranton, PA, USA.
| | - Richard C Crist
- Center for Neurobiology and Behavior, Department of Psychiatry, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Glenn A Doyle
- Center for Neurobiology and Behavior, Department of Psychiatry, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Thomas N Ferraro
- Center for Neurobiology and Behavior, Department of Psychiatry, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
- Department of Biomedical Sciences, Cooper Medical School of Rowan University, Camden, NJ, USA
| | | | | | | | | | | | - John J Han
- Department of Pain Medicine, Geisinger Medical Center, Danville, PA, USA
| | - Ryan J Ness
- Department of Pain Medicine, Geisinger Medical Center, Danville, PA, USA
| | - Wade H Berrettini
- Geisinger Clinic, Geisinger, Danville, PA, USA
- Department of Biomedical Sciences, Cooper Medical School of Rowan University, Camden, NJ, USA
| | - Janet D Robishaw
- Department of Biomedical Science, Schmidt College of Medicine of Florida Atlantic University, Boca Raton, FL, USA
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26
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Kandić M, Moliadze V, Andoh J, Flor H, Nees F. Brain Circuits Involved in the Development of Chronic Musculoskeletal Pain: Evidence From Non-invasive Brain Stimulation. Front Neurol 2021; 12:732034. [PMID: 34531819 PMCID: PMC8438114 DOI: 10.3389/fneur.2021.732034] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 08/06/2021] [Indexed: 12/03/2022] Open
Abstract
It has been well-documented that the brain changes in states of chronic pain. Less is known about changes in the brain that predict the transition from acute to chronic pain. Evidence from neuroimaging studies suggests a shift from brain regions involved in nociceptive processing to corticostriatal brain regions that are instrumental in the processing of reward and emotional learning in the transition to the chronic state. In addition, dysfunction in descending pain modulatory circuits encompassing the periaqueductal gray and the rostral anterior cingulate cortex may also be a key risk factor for pain chronicity. Although longitudinal imaging studies have revealed potential predictors of pain chronicity, their causal role has not yet been determined. Here we review evidence from studies that involve non-invasive brain stimulation to elucidate to what extent they may help to elucidate the brain circuits involved in pain chronicity. Especially, we focus on studies using non-invasive brain stimulation techniques [e.g., transcranial magnetic stimulation (TMS), particularly its repetitive form (rTMS), transcranial alternating current stimulation (tACS), and transcranial direct current stimulation (tDCS)] in the context of musculoskeletal pain chronicity. We focus on the role of the motor cortex because of its known contribution to sensory components of pain via thalamic inhibition, and the role of the dorsolateral prefrontal cortex because of its role on cognitive and affective processing of pain. We will also discuss findings from studies using experimentally induced prolonged pain and studies implicating the DLPFC, which may shed light on the earliest transition phase to chronicity. We propose that combined brain stimulation and imaging studies might further advance mechanistic models of the chronicity process and involved brain circuits. Implications and challenges for translating the research on mechanistic models of the development of chronic pain to clinical practice will also be addressed.
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Affiliation(s)
- Mina Kandić
- Institute of Cognitive and Clinical Neuroscience, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Vera Moliadze
- Institute of Medical Psychology and Medical Sociology, University Hospital Schleswig-Holstein, Kiel University, Kiel, Germany
| | - Jamila Andoh
- Institute of Cognitive and Clinical Neuroscience, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
- Department of Psychiatry and Psychotherapy, Medical Faculty Mannheim, Central Institute of Mental Health, University of Heidelberg, Mannheim, Germany
| | - Herta Flor
- Institute of Cognitive and Clinical Neuroscience, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Frauke Nees
- Institute of Cognitive and Clinical Neuroscience, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
- Institute of Medical Psychology and Medical Sociology, University Hospital Schleswig-Holstein, Kiel University, Kiel, Germany
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27
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Martucci KT, Weber KA, Mackey SC. Spinal Cord Resting State Activity in Individuals With Fibromyalgia Who Take Opioids. Front Neurol 2021; 12:694271. [PMID: 34421798 PMCID: PMC8371264 DOI: 10.3389/fneur.2021.694271] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 06/28/2021] [Indexed: 11/24/2022] Open
Abstract
Chronic pain coincides with myriad functional alterations throughout the brain and spinal cord. While spinal cord mechanisms of chronic pain have been extensively characterized in animal models and in vitro, to date, research in patients with chronic pain has focused only very minimally on the spinal cord. Previously, spinal cord functional magnetic resonance imaging (fMRI) identified regional alterations in spinal cord activity in patients (who were not taking opioids) with fibromyalgia, a chronic pain condition. Here, in patients with fibromyalgia who take opioids (N = 15), we compared spinal cord resting-state fMRI data vs. patients with fibromyalgia not taking opioids (N = 15) and healthy controls (N = 14). We hypothesized that the opioid (vs. non-opioid) patient group would show greater regional alterations in spinal cord activity (i.e., the amplitude of low frequency fluctuations or ALFF, a measure of regional spinal cord activity). However, we found that regional spinal cord activity in the opioid group was more similar to healthy controls, while regional spinal cord activity in the non-opioid group showed more pronounced differences (i.e., ventral increases and dorsal decreases in regional ALFF) vs. healthy controls. Across patient groups, self-reported fatigue correlated with regional differences in spinal cord activity. Additionally, spinal cord functional connectivity and graph metrics did not differ among groups. Our findings suggest that, contrary to our main hypothesis, patients with fibromyalgia who take opioids do not have greater alterations in regional spinal cord activity. Thus, regional spinal cord activity may be less imbalanced in patients taking opioids compared to patients not taking opioids.
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Affiliation(s)
- Katherine T. Martucci
- Human Affect and Pain Neuroscience Laboratory, Center for Translational Pain Medicine, Department of Anesthesiology, Duke University Medical Center, Durham, NC, United States
| | - Kenneth A. Weber
- Systems Neuroscience and Pain Laboratory, Division of Pain Medicine, Department of Anesthesiology, Perioperative, and Pain Medicine, Stanford University, Palo Alto, CA, United States
| | - Sean C. Mackey
- Systems Neuroscience and Pain Laboratory, Division of Pain Medicine, Department of Anesthesiology, Perioperative, and Pain Medicine, Stanford University, Palo Alto, CA, United States
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28
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Merhar SL, Kline JE, Braimah A, Kline-Fath BM, Tkach JA, Altaye M, He L, Parikh NA. Prenatal opioid exposure is associated with smaller brain volumes in multiple regions. Pediatr Res 2021; 90:397-402. [PMID: 33177677 PMCID: PMC8110593 DOI: 10.1038/s41390-020-01265-w] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 10/14/2020] [Accepted: 10/23/2020] [Indexed: 12/02/2022]
Abstract
BACKGROUND The impact of prenatal opioid exposure on brain development remains poorly understood. METHODS We conducted a prospective study of term-born infants with and without prenatal opioid exposure. Structural brain MRI was performed between 40 and 48 weeks postmenstrual age. T2-weighted images were processed using the Developing Human Connectome Project structural pipeline. We compared 63 relative regional brain volumes between groups. RESULTS Twenty-nine infants with prenatal opioid exposure and 42 unexposed controls were included. The groups had similar demographics, except exposed infants had lower birth weights, more maternal smoking and maternal Hepatitis C, fewer mothers with a college degree, and were more likely non-Hispanic White. After controlling for sex, postmenstrual age at scan, birth weight, and maternal education, exposed infants had significantly smaller relative volumes of the deep gray matter, bilateral thalamic ventrolateral nuclei, bilateral insular white matter, bilateral subthalamic nuclei, brainstem, and cerebrospinal fluid. Exposed infants had larger relative volumes of the right cingulate gyrus white matter and left occipital lobe white matter. CONCLUSIONS Infants with prenatal opioid exposure had smaller brain volumes in multiple regions compared to controls, with two regions larger in the opioid-exposed group. Further research should focus on the relative contributions of maternal opioids and other exposures. IMPACT Prenatal opioid exposure is associated with developmental and behavioral consequences, but the direct effects of opioids on the developing human brain are poorly understood. Prior small studies using MRI have shown smaller regional brain volumes in opioid-exposed infants and children. After controlling for covariates, infants with prenatal opioid exposure scanned at 40-48 weeks postmenstrual age had smaller brain volumes in multiple regions compared to controls, with two regions larger in the opioid-exposed group. This adds to the literature showing potential impact of prenatal opioid exposure on the developing brain.
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Affiliation(s)
- Stephanie L Merhar
- Perinatal Institute, Division of Neonatology, Cincinnati Children's Hospital, Cincinnati, OH, USA.
- Department of Pediatrics, University of Cincinnati, Cincinnati, OH, USA.
| | - Julia E Kline
- Perinatal Institute, Division of Neonatology, Cincinnati Children's Hospital, Cincinnati, OH, USA
| | - Adebayo Braimah
- Imaging Research Center, Cincinnati Children's Hospital, Cincinnati, OH, USA
| | - Beth M Kline-Fath
- Department of Radiology, Cincinnati Children's Hospital, Cincinnati, OH, USA
| | - Jean A Tkach
- Department of Radiology, Cincinnati Children's Hospital, Cincinnati, OH, USA
| | - Mekibib Altaye
- Department of Pediatrics, University of Cincinnati, Cincinnati, OH, USA
- Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital, Cincinnati, OH, USA
| | - Lili He
- Perinatal Institute, Division of Neonatology, Cincinnati Children's Hospital, Cincinnati, OH, USA
- Department of Pediatrics, University of Cincinnati, Cincinnati, OH, USA
| | - Nehal A Parikh
- Perinatal Institute, Division of Neonatology, Cincinnati Children's Hospital, Cincinnati, OH, USA
- Department of Pediatrics, University of Cincinnati, Cincinnati, OH, USA
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29
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Martel MO, Bruneau A, Edwards RR. Mind-body approaches targeting the psychological aspects of opioid use problems in patients with chronic pain: evidence and opportunities. Transl Res 2021; 234:114-128. [PMID: 33676035 DOI: 10.1016/j.trsl.2021.02.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 02/26/2021] [Accepted: 02/26/2021] [Indexed: 12/27/2022]
Abstract
Opioids are commonly prescribed for the management of patients with chronic noncancer pain. Despite the potential analgesic benefits of opioids, long-term opioid therapy (LTOT) may be accompanied by problems such as opioid misuse and opioid use disorder (OUD). In this review, we begin with a description of opioid misuse and OUD and the patient-specific factors associated with these problems among patients with chronic pain. We will focus primarily on highlighting the predominant role played by psychological factors in the occurrence of opioid misuse and OUD in these patients. Several psychological factors have been found to be associated with opioid use problems in patients with chronic pain, and evidence indicates that patients presenting with psychological disturbances are particularly at risk of transitioning to long-term opioid use, engaging in opioid misuse behaviors, and developing OUD. The biological factors that might underlie the association between psychological disturbances and opioid use problems in patients with chronic pain have yet to be fully elucidated, but a growing number of studies suggest that dysfunctions in reward, appetitive, autonomic, and neurocognitive systems might be involved. We end with an overview of specific types of psychological interventions that have been put forward to prevent or reduce the occurrence of opioid misuse and OUD in patients with chronic pain who are prescribed LTOT.
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Affiliation(s)
- Marc O Martel
- Faculty of Dentistry & Department of Anesthesiology, McGill University, Montreal, Canada; Division of Experimental Medicine, McGill University, Montreal, Canada
| | - Alice Bruneau
- Division of Experimental Medicine, McGill University, Montreal, Canada
| | - Robert R Edwards
- Department of Anesthesiology & Pain Medicine, Brigham & Women's Hospital, Harvard Medical School, Boston, Massachusetts.
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30
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Asuni GP, Speidell A, Mocchetti I. Neuronal apoptosis induced by morphine withdrawal is mediated by the p75 neurotrophin receptor. J Neurochem 2021; 158:169-181. [PMID: 33742683 PMCID: PMC10176599 DOI: 10.1111/jnc.15355] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 02/22/2021] [Accepted: 03/15/2021] [Indexed: 01/01/2023]
Abstract
Morphine withdrawal evokes neuronal apoptosis through mechanisms that are still under investigation. We have previously shown that morphine withdrawal increases the levels of pro-brain-derived neurotrophic factor (BDNF), a proneurotrophin that promotes neuronal apoptosis through the binding and activation of the pan-neurotrophin receptor p75 (p75NTR). In this work, we sought to examine whether morphine withdrawal increases p75NTR-driven signaling events. We employed a repeated morphine treatment-withdrawal paradigm in order to investigate biochemical and histological indicators of p75NTR-mediated neuronal apoptosis in mice. We found that repeated cycles of spontaneous morphine withdrawal promote an accumulation of p75NTR in hippocampal synapses. At the same time, TrkB, the receptor that is crucial for BDNF-mediated synaptic plasticity in the hippocampus, was decreased, suggesting that withdrawal alters the neurotrophin receptor environment to favor synaptic remodeling and apoptosis. Indeed, we observed evidence of neuronal apoptosis in the hippocampus, including activation of c-Jun N-terminal kinase (JNK) and increased active caspase-3. These effects were not seen in saline or morphine-treated mice which had not undergone withdrawal. To determine whether p75NTR was necessary in promoting these outcomes, we repeated these experiments in p75NTR heterozygous mice. The lack of one p75NTR allele was sufficient to prevent the increases in phosphorylated JNK and active caspase-3. Our results suggest that p75NTR participates in the neurotoxic and proinflammatory state evoked by morphine withdrawal. Because p75NTR activation negatively influences synaptic repair and promotes cell death, preventing opioid withdrawal is crucial for reducing neurotoxic mechanisms accompanying opioid use disorders.
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Affiliation(s)
- Gino P. Asuni
- Laboratory of Preclinical Neurobiology, Georgetown University Medical Center, Washington DC, USA
| | - Andrew Speidell
- Laboratory of Preclinical Neurobiology, Georgetown University Medical Center, Washington DC, USA
- Interdisciplinary Program in Neuroscience, Georgetown University Medical Center, Washington DC, USA
| | - Italo Mocchetti
- Laboratory of Preclinical Neurobiology, Georgetown University Medical Center, Washington DC, USA
- Interdisciplinary Program in Neuroscience, Georgetown University Medical Center, Washington DC, USA
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31
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Wakaizumi K, Vigotsky AD, Jabakhanji R, Abdallah M, Barroso J, Schnitzer TJ, Apkarian AV, Baliki MN. Psychosocial, Functional, and Emotional Correlates of Long-Term Opioid Use in Patients with Chronic Back Pain: A Cross-Sectional Case-Control Study. Pain Ther 2021; 10:691-709. [PMID: 33844170 PMCID: PMC8119524 DOI: 10.1007/s40122-021-00257-w] [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: 12/08/2020] [Accepted: 03/13/2021] [Indexed: 12/25/2022] Open
Abstract
INTRODUCTION The opiate epidemic has severe medical and social consequences. Opioids are commonly prescribed in patients with chronic pain, and are a main contributor to the opiate epidemic. The adverse effects of long-term opioid usage have been studied primarily in dependence/addiction disorders, but not in chronic pain. Here, we examine the added iatrogenic effects, psychology, and brain morphology of long-term opioid use in matched patients with chronic pain with and without opioid use (case-controlled design). METHODS We compared psychosocial, functional, and psychological measures between patients with chronic back pain (CBP) who were managing their pain with or without opioids, thereby controlling for the effect of pain on these outcomes. In addition, we investigated brain morphological differences associated with long-term opioid usage. We recruited 58 patients with CBP, 29 of them on long-term opioids and 29 who did not use opioids, and who were matched in terms of age, sex, pain intensity, and pain duration. Questionnaires were used to assess pain quality, pain psychology, negative and positive emotions, physical, cognitive, sensory, and motor functions, quality of life, and personality traits. RESULTS Patients with CBP on opioids displayed more negative emotion, poorer physical function, and more pain interference (p < 0.001), whereas there were no statistical differences in cognitive and motor functions and personality traits. Voxel-based morphometry using structural brain imaging data identified decreased gray matter density of the dorsal paracingulate cortex (family-wise error-corrected p < 0.05) in patients with opioids, which was associated with negative emotion (p = 0.03). Finally, a volumetric analysis of hippocampal subfields identified lower volume of the left presubiculum in patients on opioids (p < 0.001). CONCLUSION Long-term opioid use in chronic pain is associated with adverse negative emotion and disabilities, as well as decreased gray matter volumes of specific brain regions.
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Affiliation(s)
- Kenta Wakaizumi
- Shirley Ryan AbilityLab, Chicago, IL, USA
- Department of Physical Medicine and Rehabilitation, Feinberg School of Medicine, Northwestern University, 355 East Erie St, Chicago, IL, 60611, USA
- Center for Translational Pain Research, and Center of Excellence for Chronic Pain and Drug Abuse Research, Northwestern University Feinberg School of Medicine, Chicago, USA
- Department of Anesthesiology, Keio University School of Medicine, Tokyo, Japan
| | - Andrew D Vigotsky
- Center for Translational Pain Research, and Center of Excellence for Chronic Pain and Drug Abuse Research, Northwestern University Feinberg School of Medicine, Chicago, USA
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, USA
- Department of Statistics, Northwestern University, Evanston, IL, USA
| | - Rami Jabakhanji
- Shirley Ryan AbilityLab, Chicago, IL, USA
- Department of Physical Medicine and Rehabilitation, Feinberg School of Medicine, Northwestern University, 355 East Erie St, Chicago, IL, 60611, USA
- Center for Translational Pain Research, and Center of Excellence for Chronic Pain and Drug Abuse Research, Northwestern University Feinberg School of Medicine, Chicago, USA
| | - Maryam Abdallah
- Department of Physical Medicine and Rehabilitation, Feinberg School of Medicine, Northwestern University, 355 East Erie St, Chicago, IL, 60611, USA
- Center for Translational Pain Research, and Center of Excellence for Chronic Pain and Drug Abuse Research, Northwestern University Feinberg School of Medicine, Chicago, USA
| | - Joana Barroso
- Department of Physical Medicine and Rehabilitation, Feinberg School of Medicine, Northwestern University, 355 East Erie St, Chicago, IL, 60611, USA
- Center for Translational Pain Research, and Center of Excellence for Chronic Pain and Drug Abuse Research, Northwestern University Feinberg School of Medicine, Chicago, USA
| | - Thomas J Schnitzer
- Department of Physical Medicine and Rehabilitation, Feinberg School of Medicine, Northwestern University, 355 East Erie St, Chicago, IL, 60611, USA
- Center for Translational Pain Research, and Center of Excellence for Chronic Pain and Drug Abuse Research, Northwestern University Feinberg School of Medicine, Chicago, USA
| | - Apkar Vania Apkarian
- Center for Translational Pain Research, and Center of Excellence for Chronic Pain and Drug Abuse Research, Northwestern University Feinberg School of Medicine, Chicago, USA.
- Department of Physiology, Northwestern University Feinberg School of Medicine, Chicago, USA.
- Department of Anesthesia, Feinberg School of Medicine, Northwestern University, Tarry Bldg. 7-705, Chicago, IL, 60611, USA.
| | - Marwan N Baliki
- Shirley Ryan AbilityLab, Chicago, IL, USA.
- Department of Physical Medicine and Rehabilitation, Feinberg School of Medicine, Northwestern University, 355 East Erie St, Chicago, IL, 60611, USA.
- Center for Translational Pain Research, and Center of Excellence for Chronic Pain and Drug Abuse Research, Northwestern University Feinberg School of Medicine, Chicago, USA.
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Garland EL. Mindful Positive Emotion Regulation as a Treatment for Addiction: From Hedonic Pleasure to Self-Transcendent Meaning. Curr Opin Behav Sci 2021; 39:168-177. [PMID: 34084873 PMCID: PMC8168946 DOI: 10.1016/j.cobeha.2021.03.019] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Chronic drug use is theorized to induce cortico-striatal neuroplasticity, driving an allostatic process marked by increased sensitivity to drug-related cues and decreased sensitivity to natural rewards that results in anhedonia and a dearth of positive affect. As such, positive emotion regulation represents a key mechanistic target for addictions treatment. This paper provides a conceptual model detailing how mindfulness may synergize a range of positive affective mechanisms to reduce addictive behavior, from savoring the hedonic pleasure derived from natural rewards, to self-generating interoceptive reward responses, and ultimately to cultivating self-transcendent meaning. These therapeutic processes may restructure reward processing from over-valuation of drug-related rewards back to valuation of natural rewards, and hypothetically, "reset" the default mode network dysfunction that undergirds addiction.
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Affiliation(s)
- Eric L. Garland
- Center on Mindfulness and Integrative Health Intervention Development, University of Utah, USA
- College of Social Work, University of Utah, USA
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33
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Kashanian A, Tsolaki E, Pouratian N, Bari AA. Deep Brain Stimulation of the Subgenual Cingulate Cortex for the Treatment of Chronic Low Back Pain. Neuromodulation 2021; 25:202-210. [PMID: 33872423 DOI: 10.1111/ner.13388] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 02/12/2021] [Accepted: 02/24/2021] [Indexed: 12/31/2022]
Abstract
OBJECTIVES Despite converging basic scientific and clinical evidence of the link between chronic pain and depression, existing therapies do not often take advantage of this overlap. Here, we provide a critical review of the literature that highlights the intersection in brain networks between chronic low back pain (CLBP) and depression and discuss findings from previous deep brain stimulation (DBS) studies for pain. Based on a multidimensional model of pain processing and the connectivity of the subgenual cingulate cortex (SCC) with areas that are implicated in both CLBP and depression, we propose a novel approach to the treatment of CLBP using DBS of the SCC. MATERIALS AND METHODS A narrative review with literature assessment. RESULTS CLBP is associated with a shift away from somatosensory representation toward brain regions that mediate emotional processes. There is a high degree of overlap between these regions and those involved in depression, including the anterior cingulate cortex, medial prefrontal cortex, nucleus accumbens, and amygdala. Whereas targets sites from previous DBS trials for pain were not anatomically positioned to engage these areas and their associated networks, the SCC is structurally connected to all of these regions and as well as others involved in mediating sensory, cognitive, and affective processing in CLBP. CONCLUSIONS CLBP and depression share a common underlying brain network interconnected by the SCC. Current data and novel technology provide an optimal opportunity to develop clinically effective trials of SCC DBS for CLBP.
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Affiliation(s)
- Alon Kashanian
- Department of Neurosurgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Evangelia Tsolaki
- Department of Neurosurgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Nader Pouratian
- Department of Neurosurgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Ausaf A Bari
- Department of Neurosurgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
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34
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Mill RD, Winfield EC, Cole MW, Ray S. Structural MRI and functional connectivity features predict current clinical status and persistence behavior in prescription opioid users. NEUROIMAGE-CLINICAL 2021; 30:102663. [PMID: 33866300 PMCID: PMC8060550 DOI: 10.1016/j.nicl.2021.102663] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 03/24/2021] [Accepted: 04/02/2021] [Indexed: 01/10/2023]
Abstract
Prescription opioid use disorder (POUD) has reached epidemic proportions in the United States, raising an urgent need for diagnostic biological tools that can improve predictions of disease characteristics. The use of neuroimaging methods to develop such biomarkers have yielded promising results when applied to neurodegenerative and psychiatric disorders, yet have not been extended to prescription opioid addiction. With this long-term goal in mind, we conducted a preliminary study in this understudied clinical group. Univariate and multivariate approaches to distinguishing between POUD (n = 26) and healthy controls (n = 21) were investigated, on the basis of structural MRI (sMRI) and resting-state functional connectivity (restFC) features. Univariate approaches revealed reduced structural integrity in the subcortical extent of a previously reported addiction-related network in POUD subjects. No reliable univariate between-group differences in cortical structure or edgewise restFC were observed. Contrasting these mixed univariate results, multivariate machine learning classification approaches recovered more statistically reliable group differences, especially when sMRI and restFC features were combined in a multi-modal model (classification accuracy = 66.7%, p < .001). The same multivariate multi-modal approach also yielded reliable prediction of individual differences in a clinically relevant behavioral measure (persistence behavior; predicted-to-actual overlap r = 0.42, p = .009). Our findings suggest that sMRI and restFC measures can be used to reliably distinguish the neural effects of long-term opioid use, and that this endeavor numerically benefits from multivariate predictive approaches and multi-modal feature sets. This can serve as theoretical proof-of-concept for future longitudinal modeling of prognostic POUD characteristics from neuroimaging features, which would have clearer clinical utility.
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Affiliation(s)
- Ravi D Mill
- Center for Molecular and Behavioral Neuroscience, Rutgers University, Newark, NJ 07102, USA
| | - Emily C Winfield
- Center for Molecular and Behavioral Neuroscience, Rutgers University, Newark, NJ 07102, USA
| | - Michael W Cole
- Center for Molecular and Behavioral Neuroscience, Rutgers University, Newark, NJ 07102, USA
| | - Suchismita Ray
- Department of Health Informatics, School of Health Professions, Rutgers Biomedical and Health Sciences, Newark, NJ 07103, USA.
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35
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Nylander E, Zelleroth S, Nyberg F, Grönbladh A, Hallberg M. The effects of morphine, methadone, and fentanyl on mitochondria: A live cell imaging study. Brain Res Bull 2021; 171:126-134. [PMID: 33741459 DOI: 10.1016/j.brainresbull.2021.03.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 12/29/2020] [Accepted: 03/13/2021] [Indexed: 01/29/2023]
Abstract
The important role of mitochondria in maintaining normal brain cell function has been demonstrated in several neurodegenerative diseases where mitochondrial dysfunction is a prominent feature. Accumulating evidence indicates that opioids may induce neuronal cell death and inhibit neurogenesis, two factors that are dependent on normal mitochondrial function. The aim of the present study was to examine the effects of morphine, methadone, and fentanyl on MitoTracker-stained mitochondria. Cells from the neuroblastoma/glioma hybrid cell-line NG108-15 were seeded on 96-well cell culture plates and treated with MitoTracker for 30 min prior to opioid treatment. Morphine, methadone, and fentanyl were added at various concentrations and images of mitochondria were acquired every 30 min for four hours using a high-content imaging device. The parameters total mitochondrial area, mitochondrial network, as well as the number and mean area of mitochondrial objects were analyzed using automated image analysis. Methadone and fentanyl, but not morphine, decreased the mitochondrial network, the number of mitochondrial objects, and increased the mean area of mitochondrial objects. Both methadone and fentanyl altered mitochondrial morphology with no effects seen from morphine treatment. These data suggest that methadone and fentanyl impact mitochondrial morphology negatively, which may be associated with neuronal cell death.
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Affiliation(s)
- Erik Nylander
- The Beijer Laboratory, Dept. of Pharmaceutical Biosciences, Uppsala University, SE-751 24, Uppsala, Sweden
| | - Sofia Zelleroth
- The Beijer Laboratory, Dept. of Pharmaceutical Biosciences, Uppsala University, SE-751 24, Uppsala, Sweden
| | - Fred Nyberg
- The Beijer Laboratory, Dept. of Pharmaceutical Biosciences, Uppsala University, SE-751 24, Uppsala, Sweden
| | - Alfhild Grönbladh
- The Beijer Laboratory, Dept. of Pharmaceutical Biosciences, Uppsala University, SE-751 24, Uppsala, Sweden
| | - Mathias Hallberg
- The Beijer Laboratory, Dept. of Pharmaceutical Biosciences, Uppsala University, SE-751 24, Uppsala, Sweden.
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36
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Kroll SL, Thayer JF, Williams DP, Pfabigan DM, Baumgartner MR, Lamm C, Quednow BB. Chronic non-medical prescription opioid use and empathy for pain: Does pain make the difference? Psychophysiology 2021; 58:e13776. [PMID: 33569774 DOI: 10.1111/psyp.13776] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 01/04/2021] [Accepted: 01/05/2021] [Indexed: 12/24/2022]
Abstract
Non-medical prescription opioid use (NMPOU) is at the heart of the opioid epidemic in the United States. Although chronic opioid use is commonly accompanied by deficits in social functioning, little is known about the impact of chronic NMPOU on social cognitive functions. Social neuroscience models suggest that empathy activates similar or even equivalent neural structures as those underpinning the first-hand experience in that emotional state (e.g., pain). Therefore, we measured subjective and psychophysiological responses during an empathy-for-pain task in 23 individuals with NMPOU, objectively confirmed by hair and urine testing, and compared them with 29 opioid-naïve healthy controls. NMPOU individuals showed lower other-related and self-related unpleasantness ratings when seeing others in pain than controls. No differences between the control and NMPOU group were found in skin conductance responses and heart rate variability (HRV) assessed by root mean square of successive differences (RMSSD) in response to the task. However, RMSSD-HRV was strongly negatively correlated with self-related unpleasantness and craving in the NMPOU group. A subsequent mediation analysis showed a total effect of RMSSD-HRV on self-related unpleasantness with no mediation of craving. This indicates that stronger emotion regulation indexed by high RMSSD-HRV might have downregulating effects on sharing others' pain in NMPOU individuals but not in healthy controls, which was further accompanied by decreased ratings of personal distress and empathetic concern. These results contribute to a better understanding of social functioning in chronic opioid users, suggesting adequate emotion regulation and empathy trainings as therapeutic targets for future interventions of opioid use disorders and long-term pain treatment with opioids.
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Affiliation(s)
- Sara L Kroll
- Experimental and Clinical Pharmacopsychology, Department of Psychiatry, Psychotherapy, and Psychosomatics, Psychiatric Hospital, University of Zurich, Zurich, Switzerland.,Center for Social and Affective Neuroscience, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - Julian F Thayer
- Department of Psychological Science, University of California, Irvine, CA, USA
| | - DeWayne P Williams
- Department of Psychological Science, University of California, Irvine, CA, USA
| | - Daniela M Pfabigan
- Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Markus R Baumgartner
- Center for Forensic Hair Analysis, Institute of Forensic Medicine, University of Zurich, Zurich, Switzerland
| | - Claus Lamm
- Social, Cognitive and Affective Neuroscience Unit, Department of Cognition, Emotion, and Methods in Psychology, Faculty of Psychology, University of Vienna, Vienna, Austria
| | - Boris B Quednow
- Experimental and Clinical Pharmacopsychology, Department of Psychiatry, Psychotherapy, and Psychosomatics, Psychiatric Hospital, University of Zurich, Zurich, Switzerland.,Neuroscience Center Zurich, University of Zurich and Swiss Federal Institute of Technology Zurich, Zurich, Switzerland
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37
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Murray K, Lin Y, Makary MM, Whang PG, Geha P. Brain Structure and Function of Chronic Low Back Pain Patients on Long-Term Opioid Analgesic Treatment: A Preliminary Study. Mol Pain 2021; 17:1744806921990938. [PMID: 33567986 PMCID: PMC7883154 DOI: 10.1177/1744806921990938] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Chronic low back pain (CLBP) is often treated with opioid analgesics (OA), a class of medications associated with a significant risk of misuse. However, little is known about how treatment with OA affect the brain in chronic pain patients. Gaining this knowledge is a necessary first step towards understanding OA associated analgesia and elucidating long-term risk of OA misuse. Here we study CLBP patients chronically medicated with opioids without any evidence of misuse and compare them to CLBP patients not on opioids and to healthy controls using structural and functional brain imaging. CLBP patients medicated with OA showed loss of volume in the nucleus accumbens and thalamus, and an overall significant decrease in signal to noise ratio in their sub-cortical areas. Power spectral density analysis (PSD) of frequency content in the accumbens’ resting state activity revealed that both medicated and unmedicated patients showed loss of PSD within the slow-5 frequency band (0.01–0.027 Hz) while only CLBP patients on OA showed additional density loss within the slow-4 frequency band (0.027–0.073 Hz). We conclude that chronic treatment with OA is associated with altered brain structure and function within sensory limbic areas.
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Affiliation(s)
- Kyle Murray
- Department of Physics and Astronomy, University of Rochester, Rochester, NY, USA
| | - Yezhe Lin
- Department of Psychiatry, School of Medicine and Dentistry, University of Rochester, Rochester, NY, USA
| | - Meena M Makary
- The John B. Pierce Laboratory, New Haven, CT, USA.,Department of Psychiatry, Yale School of Medicine, Yale University, New Haven, CT, USA.,Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA.,Systems and Biomedical Engineering Department, Faculty of Engineering, Cairo University, Giza, Egypt
| | - Peter G Whang
- Department of Orthopaedics and Rehabilitation, Yale School of Medicine, New Haven, CT, USA
| | - Paul Geha
- Department of Psychiatry, School of Medicine and Dentistry, University of Rochester, Rochester, NY, USA.,The John B. Pierce Laboratory, New Haven, CT, USA.,Department of Psychiatry, Yale School of Medicine, Yale University, New Haven, CT, USA
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38
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Best MJ, Harris AB, Bansal A, Huish E, Srikumaran U. Predictors of Long-term Opioid Use After Elective Primary Total Shoulder Arthroplasty. Orthopedics 2021; 44:58-63. [PMID: 33089332 DOI: 10.3928/01477447-20201007-06] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 10/27/2019] [Indexed: 02/03/2023]
Abstract
Opioids are prescribed routinely for pain after total shoulder arthroplasty (TSA). This study was designed to characterize opioid use after elective primary TSA and identify predictors of long-term postoperative opioid use. The authors used the MarketScan administrative claims database to identify 5676 adults who underwent elective primary TSA between 2010 and 2015 and had 1 year or more of continuous insurance enrollment, including prescription drug coverage, postoperatively. Long-term postoperative opioid use was defined as filling prescriptions totaling a 120-day or greater supply during the 3- to 12-month postoperative period. The authors performed univariate regression analysis with age, sex, US region, anatomic or reverse TSA, anxiety, chronic obstructive pulmonary disease, congestive heart failure, depression, diabetes, history of drug abuse, hypertension, obesity, osteoporosis, history of myocardial infarction, and current tobacco use. Variables that were significant at P<.05 were included in multivariate logistic regression. Overall, 16% of patients had long-term postoperative opioid use, which was strongly predicted by the multivariate model (area under the curve, 0.77; P<.001). The strongest predictors in the multivariate analysis were preoperative opioid use (odds ratio [OR], 4.7; 95% CI, 4.0-5.5), history of drug abuse (OR, 2.5; 95% CI, 1.3-4.9), depression (OR, 1.9; 95% CI, 1.6-2.3), anxiety (OR, 1.4; 95% CI, 1.2-1.7), surgery performed in the Western United States (OR, 1.8; 95% CI, 1.3-2.4), and reverse TSA (OR, 1.5; 95% CI, 1.2-1.8). Most patients do not have long-term opioid use after elective primary TSA. Strong predictors of long-term postoperative opioid use are preoperative opioid use, history of drug abuse, depression, anxiety, reverse TSA, and surgery performed in the Western United States. [Orthopedics. 2021;44(1):58-63.].
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Laigaard J, Bache N, Stottmeier S, Mathiesen O, Estrup S. Cognitive Function During Opioid Tapering in Patients with Chronic Pain: A Prospective Cohort Study. J Pain Res 2020; 13:3385-3394. [PMID: 33363405 PMCID: PMC7754260 DOI: 10.2147/jpr.s273025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 09/13/2020] [Indexed: 01/06/2023] Open
Abstract
Purpose Evidence for efficacy and safety lacks for long-term opioid therapy in patients with chronic non-cancer pain and adverse effects, including affection of cognitive function and quality of life, is of concern. We aimed to investigate cognitive function and health-related quality of life in patients with chronic non-cancer pain during opioid reduction. Patients and Methods At two multidisciplinary pain centers, all patients with planned opioid reduction were screened for eligibility. Cognitive function was assessed using the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) and Trail Making Test A and B. Health-related quality of life was assessed using Short Form-36 (SF36) and Hospital Anxiety and Depression Scale (HADS). Results We included 51 participants and 40 participants attended follow-up of median 254 (IQR 106–357) days. Baseline RBANS score was 82 (IQR 65–93) with reference population norm value of 100 (SD±15). Daily opioid consumption was reduced from median 80 (IQR 45–161) oral morphine milligram equivalents to 19 (IQR 0–60) mg. RBANS score estimate increased by 6.2 (95% CI 3.1–9.3, p=0.0004) points after tapering. No differences were observed for Trail Making Test times, HADS or SF36 scores. Conclusion Generally, cognitive function showed minor improvement after opioid tapering with stationary health-related quality of life, depression and anxiety scores. The clinical significance is unclear, as no minimal clinically important difference in RBANS score is available.
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Affiliation(s)
- Jens Laigaard
- Centre for Anaesthesiological Research, Department of Anesthesiology, Zealand University Hospital, Køge, Denmark
| | - Nina Bache
- Multidisciplinary Pain Center, Department of Anesthesiology, Zealand University Hospital, Køge, Denmark
| | - Stefan Stottmeier
- Multidisciplinary Pain Center, Department of Anesthesiology, Holbæk Hospital, Holbæk, Denmark
| | - Ole Mathiesen
- Centre for Anaesthesiological Research, Department of Anesthesiology, Zealand University Hospital, Køge, Denmark.,Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Stine Estrup
- Centre for Anaesthesiological Research, Department of Anesthesiology, Zealand University Hospital, Køge, Denmark
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40
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Bernstein C, Gillman AG, Zhang D, Bartman AE, Jeong JH, Wasan AD. Identifying Predictors of Recommendations for and Participation in Multimodal Nonpharmacological Treatments for Chronic Pain Using Patient-Reported Outcomes and Electronic Medical Records. PAIN MEDICINE 2020; 21:3574-3584. [PMID: 32869082 DOI: 10.1093/pm/pnaa203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE High-quality chronic pain care emphasizes multimodal treatments that include medication and nonpharmacological treatments. But it is not clear which patients will participate in nonpharmacological treatments, such as physical therapy or mental health care, and previous research has shown conflicting evidence. METHODS We used the Patient Outcomes Repository for Treatment (PORT) registry, which combines patient-reported outcomes data with electronic medical records. In this retrospective observational study, we performed two separate multinomial regression analyses with feature selection to identify PORT variables that were predictive of 1) recommendation of a nonpharmacological treatment by the provider and 2) patient participation in nonpharmacological treatments. Two hundred thirty-six patients were recommended (REC) or not recommended (NO REC) a nonpharmacological treatment, and all REC patients were classified as participating (YES) or not participating (NO) in the recommendations. RESULTS Female gender and a diagnosis of Z79 "Opioid drug therapy" were significant positive and negative predictors of nonpharmacological treatment recommendations, respectively. Schedule II opioid use at initial presentation and recommendations for rehabilitation therapy were significant predictors of nonparticipation. CONCLUSIONS Patients using opioids are less likely to be recommended nonpharmacological treatments as part of multimodal chronic pain care and are less likely to participate in nonpharmacological treatments once recommended. Males are also less likely to be recommended nonpharmacological treatments. Patients referred for rehabilitation therapies are less likely to comply with those recommendations. We have identified patients in vulnerable subgroups who may require additional resources and/or encouragement to comply with multimodal chronic pain treatment recommendations.
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Affiliation(s)
- Cheryl Bernstein
- Department of Anesthesiology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Andrea G Gillman
- Department of Anesthesiology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Di Zhang
- Division of Biometrics VII, Center for Drug Evaluation and Research, U.S. Food and Drug Administration
| | | | - Jong-Hyeon Jeong
- Department of Biostatistics, University of Pittsburgh Graduate School of Public Health, Pittsburgh, Pennsylvania, USA
| | - Ajay D Wasan
- Department of Anesthesiology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
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Gagnon CM, Scholten P, Atchison J, Jabakhanji R, Wakaizumi K, Baliki M. Structural MRI Analysis of Chronic Pain Patients Following Interdisciplinary Treatment Shows Changes in Brain Volume and Opiate-Dependent Reorganization of the Amygdala and Hippocampus. PAIN MEDICINE (MALDEN, MASS.) 2020; 21:2765-2776. [PMID: 32488262 PMCID: PMC8463093 DOI: 10.1093/pm/pnaa129] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
OBJECTIVE The present study examined pre- to post-treatment changes in volumes for brain structures known to be associated with pain processing (thalamus, caudate, putamen, pallidum, hippocampus, amygdala, and accumbens) following an interdisciplinary pain management program. DESIGN Twenty-one patients participating in a four-week interdisciplinary pain management program completed the study. The program consisted of individual and group therapies with the following disciplines: physical therapy, occupational therapy, pain psychology, biofeedback/relaxation training, nursing lectures, and medical management. All patients underwent functional magnetic resonance imaging of the brain before the start and at completion of the program. They also completed standard outcome measures assessing pain, symptoms of central sensitization, disability, mood, coping, pain acceptance, and impressions of change. RESULTS Our results showed a significant increase in total brain volume, as well as increased volumes in the thalamus, hippocampus, and amygdala. As expected, we also found significant improvements in our standard outcome measures. The majority of patients rated themselves as much or very much improved. The increase in volume in the hippocampus was significantly associated with patient perceptions of change. However, the correlations were in the unexpected direction, such that greater increases in hippocampal volume were associated with perceptions of less improvement. Further exploratory analyses comparing patients by their opioid use status (use vs no use) showed differential program effects on volume increases in the hippocampus and amygdala. CONCLUSIONS These findings show that a four-week interdisciplinary pain management program resulted in changes in the brain, which adds objective findings further demonstrating program efficacy.
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Affiliation(s)
- Christine M Gagnon
- Shirley Ryan Abilitylab, Pain Management Center, Chicago, Illinois
- Department of PM&R, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Paul Scholten
- Shirley Ryan Abilitylab, Pain Management Center, Chicago, Illinois
- Department of PM&R, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - James Atchison
- Shirley Ryan Abilitylab, Pain Management Center, Chicago, Illinois
- Department of PM&R, Northwestern University Feinberg School of Medicine, Chicago, Illinois
- Department of PM&R, Mayo Clinic Jacksonville, Jacksonville, Florida, USA
| | - Rami Jabakhanji
- Shirley Ryan Abilitylab, Pain Management Center, Chicago, Illinois
- Department of PM&R, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Kenta Wakaizumi
- Shirley Ryan Abilitylab, Pain Management Center, Chicago, Illinois
- Department of PM&R, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Marwan Baliki
- Shirley Ryan Abilitylab, Pain Management Center, Chicago, Illinois
- Department of PM&R, Northwestern University Feinberg School of Medicine, Chicago, Illinois
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42
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Yang S, Boudier-Revéret M, Choo YJ, Chang MC. Association between Chronic Pain and Alterations in the Mesolimbic Dopaminergic System. Brain Sci 2020; 10:brainsci10100701. [PMID: 33023226 PMCID: PMC7600461 DOI: 10.3390/brainsci10100701] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 09/23/2020] [Accepted: 09/28/2020] [Indexed: 12/15/2022] Open
Abstract
Chronic pain (pain lasting for >3 months) decreases patient quality of life and even occupational abilities. It can be controlled by treatment, but often persists even after management. To properly control pain, its underlying mechanisms must be determined. This review outlines the role of the mesolimbic dopaminergic system in chronic pain. The mesolimbic system, a neural circuit, delivers dopamine from the ventral tegmental area to neural structures such as the nucleus accumbens, prefrontal cortex, anterior cingulate cortex, and amygdala. It controls executive, affective, and motivational functions. Chronic pain patients suffer from low dopamine production and delivery in this system. The volumes of structures constituting the mesolimbic system are known to be decreased in such patients. Studies on administration of dopaminergic drugs to control chronic pain, with a focus on increasing low dopamine levels in the mesolimbic system, show that it is effective in patients with Parkinson’s disease, restless legs syndrome, fibromyalgia, dry mouth syndrome, lumbar radicular pain, and chronic back pain. However, very few studies have confirmed these effects, and dopaminergic drugs are not commonly used to treat the various diseases causing chronic pain. Thus, further studies are required to determine the effectiveness of such treatment for chronic pain.
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Affiliation(s)
- Seoyon Yang
- Department of Rehabilitation Medicine, Ewha Woman’s University Seoul Hospital, Ewha Woman’s University School of Medicine, Seoul 07804, Korea;
| | - Mathieu Boudier-Revéret
- Department of Physical Medicine and Rehabilitation, Centre Hospitalier de l’Université de Montréal, Montreal, QC H2W 1T8, Canada;
| | - Yoo Jin Choo
- Production R&D Division Advanced Interdisciplinary Team, Medical Device Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, Deagu 41061, Korea;
| | - Min Cheol Chang
- Department of Rehabilitation Medicine, College of Medicine, Yeungnam University, Daegu 42415, Korea
- Correspondence:
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43
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Friedman BW, Abril L, Naeem F, Irizarry E, Chertoff A, McGregor M, Bijur PE, Gallagher EJ. Predicting the Transition to Chronic Pain 6 Months After an Emergency Department Visit for Acute Pain: A Prospective Cohort Study. J Emerg Med 2020; 59:805-811. [PMID: 32919839 DOI: 10.1016/j.jemermed.2020.07.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 06/17/2020] [Accepted: 07/01/2020] [Indexed: 01/02/2023]
Abstract
BACKGROUND Acute pain can transition to chronic pain, a potentially debilitating illness. OBJECTIVE We determined how often acute pain transitions to chronic pain among patients in the emergency department (ED) and whether persistent pain 1 week after the ED visit was associated with chronic pain. METHODS An observational cohort study conducted in two EDs. We included adults with acute pain (≤10 days) if an oral opioid was prescribed. Exclusion criteria were recent opioid use and use of any analgesics regularly prior to onset of the pain. Research associates interviewed patients during the ED visit and 1 week and 6 months later. The primary outcome, chronic pain, was defined as pain on > 50% of days since ED discharge. We constructed logistic regression models to evaluate the association between persistent pain 1 week after an ED visit and chronic pain, while adjusting for demographic and treatment variables. RESULTS During a 9-month period, we approached 733 patients for participation and enrolled 484; 450 of 484 (93%) provided 1-week outcomes data and 410 of 484 (85%) provided 6-month outcomes data. One week after the ED visit, 348 of 453 (77%; 95% confidence interval [CI] 73-80%) patients reported pain in the affected area. New-onset chronic pain at 6 months was reported by 110 of 408 (27%; 95% CI 23-31%) patients. Presence of pain 1 week after ED visit was associated with chronic pain (odds ratio 3.6; 95% CI 1.6-8.5). CONCLUSIONS About one-quarter of ED patients with acute pain transition to chronic pain within 6 months. Persistence of pain 1 week after the ED visit can identify patients at risk of transition.
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Affiliation(s)
- Benjamin W Friedman
- Department of Emergency Medicine, Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, New York
| | - Lorena Abril
- Department of Emergency Medicine, Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, New York
| | - Farnia Naeem
- Medical College, Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, New York
| | - Eddie Irizarry
- Department of Emergency Medicine, Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, New York
| | - Andrew Chertoff
- Department of Emergency Medicine, Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, New York
| | - Michael McGregor
- Department of Emergency Medicine, Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, New York
| | - Polly E Bijur
- Department of Emergency Medicine, Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, New York
| | - E John Gallagher
- Department of Emergency Medicine, Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, New York
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44
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Factors Affecting Vision and Visio-Spatial Intelligence (VSI) in Sport: A Review of the Literature. Asian J Sports Med 2020. [DOI: 10.5812/asjsm.101670] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
: Sport has become increasingly competitive, prompting the need to determine, as far as possible, any likely performance advantage. While the focus of athletic research, testing, and training is on the physiological and physical characteristics of the sport, visual abilities not only affect sport performance directly, but also affect the acquisition of motor skills. Vision, and visual-spatial intelligence (VSI), are a relatively new and underexplored area of athletic performance. As with physiological and physical parameters, a range of factors affect vision and VSI in sporting activities. This review of the literature is a first attempt to summarize and compile an overview of the factors affecting vision and VSI in athletes, covering those previously connected with sport, as well as those hitherto not associated with athletic activities, but that could also play a part in sports performance. The evidence from this review suggests that while current research still tends to focus on single factors affecting vision and VSI, a large number of such factors have been identified that could affect vision and VSI. This offers new opportunities for researchers to investigate the effects of a combination of factors, and for conditioning and/or sports vision specialists to explore further possibilities for competitive advantage.
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45
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Abstract
Burn-injured patients provide unique challenges to those providing anaesthesia and pain management. This review aims to update both the regular burn anaesthetist and the anaesthetist only occasionally involved with burn patients in emergency settings. It addresses some aspects of care that are perhaps contentious in terms of airway management, fluid resuscitation, transfusion practices and pharmacology. Recognition of pain management failures and the lack of mechanism-specific analgesics are discussed along with the opioid crisis as it relates to burns and nonpharmacological methods in the management of distressed patients.
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Affiliation(s)
- Francois Stapelberg
- Department of Anaesthesia and Pain Medicine, New Zealand National Burn Centre, Auckland, New Zealand.,Department of Anaesthesiology, University of Auckland, Auckland, New Zealand
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46
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Gazelka HM, Clements CM, Cunningham JL, Geyer HL, Lovely JK, Olson CL, Philpot LM, Porter SB, Witt TJ, Zavaleta KW, Habermann EB. An Institutional Approach to Managing the Opioid Crisis. Mayo Clin Proc 2020; 95:968-981. [PMID: 32171474 DOI: 10.1016/j.mayocp.2019.11.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 10/29/2019] [Accepted: 11/20/2019] [Indexed: 01/08/2023]
Abstract
The opioid crisis is a major concern of most health care institutions, including our large academic center. In this article, an organized approach to managing the epidemic institutionally is discussed. An Opioid Stewardship Program was instituted at our tertiary-care center with multiple sites and states of practice, which included diverse membership and expertise. Charges of the program included reviewing current practice, workflows, and external and internal guidelines and evaluating and standardizing prescribing practices. The development of an Opioid Stewardship Program resulted in: (1) an understanding of our diverse prescribing practices and the formation of patient- and procedure-specific guidelines to manage them, (2) education tools for our patients and providers, and (3) workflows and practice advisories within the electronic health record to support appropriate prescribing and monitoring of patients. This ongoing work continues to evolve in response to the needs of our patients, changing regulatory environments, and our improved understanding of our practices.
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Affiliation(s)
- Halena M Gazelka
- Department of Anesthesiology and Perioperative Medicine, Division of Pain Medicine, Mayo Clinic, Rochester, MN.
| | | | | | - Holly L Geyer
- Division of Hospital Internal Medicine, Mayo Clinic, Phoenix, AZ
| | | | - Cheri L Olson
- Department of Family Medicine, Mayo Clinic Health System-Franciscan Healthcare in La Crosse, WI
| | - Lindsey M Philpot
- The Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, MN
| | - Steven B Porter
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Jacksonville, FL
| | - Terrence J Witt
- Department of Family Medicine, Mayo Clinic Health System in Eau Claire, WI
| | - Kathryn W Zavaleta
- Department of Management Engineering and Consulting, Mayo Clinic, Rochester, MN
| | - Elizabeth B Habermann
- The Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, MN
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47
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Colonnello V, Agostini A. Disease course, stress, attachment, and mentalization in patients with inflammatory bowel disease. Med Hypotheses 2020; 140:109665. [PMID: 32155541 DOI: 10.1016/j.mehy.2020.109665] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 02/18/2020] [Accepted: 03/03/2020] [Indexed: 12/15/2022]
Abstract
Inflammatory bowel disease (IBD), including Crohn's disease and ulcerative colitis, are chronic intestinal disorders that requires lifelong treatments. IBD are associated with perceived stress, poor quality of life, and psychopathological disorders. Previous studies have documented that psychological distress and depression are risk factors for IBD. On the other hand, IBD itself might be a source of psychological stress. IBD negatively affect individuals' daily social interactions and close interpersonal relationships. Despite IBD's detrimental effects on quality of life, patients' adherence to medicaments remains low, increasing the risk of relapses and the subsequent worsening of the clinical condition. Drawing on attachment and mentalization theories, we aim to contribute to understanding of the mechanisms involved in the poor quality of social relationships and the tendency for medication non-adherence in patients with IBD. We hypothesize a bidirectional link between IBD and attachment style and related mentalization abilities, where an individual's attachment style refers to a complex and characteristic pattern of relating to self and others and mentalization refers to the process of inferring one's own and others' mental and physical states. This hypothesized link between IBD and insecure attachment style, mediated by reduced mentalizing abilities, may be a risk factor for developing both IBD-related psychological disorders and reduced medication adherence, which could then lead to worsening disease management and prognoses for the disease course. The medication nonadherence is here considered as both an outcome and a risk factor of this vicious circle. We share the view that preventing the worsening of the IBD condition and promoting patients' medication adherence would be possible by considering the circular relationship between IBD, attachment, and mentalization and by promoting reflective functioning in patients with IBD, from the onset of the disease.
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Affiliation(s)
- Valentina Colonnello
- Department of Experimental, Diagnostic, and Specialty Medicine DIMES St. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy
| | - Alessandro Agostini
- Department of Experimental, Diagnostic, and Specialty Medicine DIMES St. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy.
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48
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McConnell PA, Garland EL, Zubieta J, Newman‐Norlund R, Powers S, Froeliger B. Impaired frontostriatal functional connectivity among chronic opioid using pain patients is associated with dysregulated affect. Addict Biol 2020; 25:e12743. [PMID: 30945801 DOI: 10.1111/adb.12743] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 01/21/2019] [Accepted: 02/10/2019] [Indexed: 12/11/2022]
Abstract
Preclinical studies have shown effects of chronic exposure to addictive drugs on glutamatergic-mediated neuroplasticity in frontostriatal circuitry. These initial findings have been paralleled by human functional magnetic resonance imaging (fMRI) research demonstrating weaker frontostriatal resting-state functional connectivity (rsFC) among individuals with psychostimulant use disorders. However, there is a dearth of human imaging literature describing associations between long-term prescription opioid use, frontostriatal rsFC, and brain morphology among chronic pain patients. We hypothesized that prescription opioid users with chronic pain, as compared with healthy control subjects, would evidence weaker frontostriatal rsFC coupled with less frontostriatal gray matter volume (GMV). Further, those opioid use-related deficits in frontostriatal circuitry would be associated with negative affect and drug misuse. Prescription opioid users with chronic pain (n = 31) and drug-free healthy controls (n = 30) underwent a high-resolution anatomical and an eyes-closed resting-state functional scan. The opioid group, relative to controls, exhibited weaker frontostriatal rsFC, and less frontostriatal GMV in both L.NAc and L.vmPFC. Frontostriatal rsFC partially mediated group differences in negative affect. Within opioid users, L.NAc GMV predicted opioid misuse severity. The current study revealed that prescription opioid use in the context of chronic pain is associated with functional and structural abnormalities in frontostriatal circuitry. These results suggest that opioid use-related abnormalities in frontostriatal circuitry may undergird disturbances in affect that may contribute to the ongoing maintenance of opioid use and misuse. These findings warrant further examination of interventions to treat opioid pathophysiology in frontostriatal circuitry over the course of treatment.
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Affiliation(s)
- Patrick A. McConnell
- Department of NeuroscienceMedical University of South Carolina Charleston South Carolina USA
| | - Eric L. Garland
- Center on Mindfulness and Integrative Health Intervention DevelopmentUniversity of Utah Salt Lake City Utah USA
- College of Social WorkUniversity of Utah Salt Lake City Utah USA
| | - Jon‐Kar Zubieta
- Department of PsychiatryUniversity of Utah Salt Lake City Utah USA
- University Neuropsychiatric InstituteUniversity of Utah Salt Lake City Utah USA
| | - Roger Newman‐Norlund
- Department of PsychologyUniversity of South Carolina Columbia South Carolina USA
| | - Shannon Powers
- Department of NeuroscienceMedical University of South Carolina Charleston South Carolina USA
| | - Brett Froeliger
- Department of NeuroscienceMedical University of South Carolina Charleston South Carolina USA
- Hollings Cancer CenterMedical University of South Carolina Charleston South Carolina USA
- Center for Biomedical ImagingMedical University of South Carolina Charleston South Carolina USA
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49
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Jantzie LL, Maxwell JR, Newville JC, Yellowhair TR, Kitase Y, Madurai N, Ramachandra S, Bakhireva LN, Northington FJ, Gerner G, Tekes A, Milio LA, Brigman JL, Robinson S, Allan A. Prenatal opioid exposure: The next neonatal neuroinflammatory disease. Brain Behav Immun 2020; 84:45-58. [PMID: 31765790 PMCID: PMC7010550 DOI: 10.1016/j.bbi.2019.11.007] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 10/29/2019] [Accepted: 11/17/2019] [Indexed: 01/19/2023] Open
Abstract
The rates of opioid use disorder during pregnancy have more than quadrupled in the last decade, resulting in numerous infants suffering exposure to opioids during the perinatal period, a critical period of central nervous system (CNS) development. Despite increasing use, the characterization and definition of the molecular and cellular mechanisms of the long-term neurodevelopmental impacts of opioid exposure commencing in utero remains incomplete. Thus, in consideration of the looming public health crisis stemming from the multitude of infants with prenatal opioid exposure entering school age, we undertook an investigation of the effects of perinatal methadone exposure in a novel preclinical model. Specifically, we examined the effects of opioids on the developing brain to elucidate mechanisms of putative neural cell injury, to identify diagnostic biomarkers and to guide clinical studies of outcome and follow-up. We hypothesized that methadone would induce a pronounced inflammatory profile in both dams and their pups, and be associated with immune system dysfunction, sustained CNS injury, and altered cognition and executive function into adulthood. This investigation was conducted using a combination of cellular, molecular, biochemical, and clinically translatable biomarker, imaging and cognitive assessment platforms. Data reveal that perinatal methadone exposure increases inflammatory cytokines in the neonatal peripheral circulation, and reprograms and primes the immune system through sustained peripheral immune hyperreactivity. In the brain, perinatal methadone exposure not only increases chemokines and cytokines throughout a crucial developmental period, but also alters microglia morphology consistent with activation, and upregulates TLR4 and MyD88 mRNA. This increase in neuroinflammation coincides with reduced myelin basic protein and altered neurofilament expression, as well as reduced structural coherence and significantly decreased fractional anisotropy on diffusion tensor imaging. In addition to this microstructural brain injury, adult rats exposed to methadone in the perinatal period have significant impairment in associative learning and executive control as assessed using touchscreen technology. Collectively, these data reveal a distinct systemic and neuroinflammatory signature associated with prenatal methadone exposure, suggestive of an altered CNS microenvironment, dysregulated developmental homeostasis, complex concurrent neural injury, and imaging and cognitive findings consistent with clinical literature. Further investigation is required to define appropriate therapies targeted at the neural injury and improve the long-term outcomes for this exceedingly vulnerable patient population.
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Affiliation(s)
- Lauren L. Jantzie
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD.,Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD.,Department of Neurology, Kennedy Krieger Institute, Baltimore, MD.,Department of Pediatrics, University of New Mexico School of Medicine, Albuquerque, NM.,Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM.,Correspondence: Lauren L. Jantzie, PhD, Johns Hopkins University, Department of Pediatrics, Division of Neonatal-Perinatal Medicine, 600 N. Wolfe Street, CMSC Building Room 6-104A, Baltimore, MD 21287,
| | - Jessie R. Maxwell
- Department of Pediatrics, University of New Mexico School of Medicine, Albuquerque, NM.,Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM
| | - Jessie C. Newville
- Department of Pediatrics, University of New Mexico School of Medicine, Albuquerque, NM.,Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM
| | - Tracylyn R. Yellowhair
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Yuma Kitase
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Nethra Madurai
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Sindhu Ramachandra
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Ludmila N. Bakhireva
- Substance Use Research and Education (SURE) Center, University of New Mexico College of Pharmacy, Albuquerque, NM
| | | | - Gwendolyn Gerner
- Department of Neuropsychology, Kennedy Krieger Institute, Baltimore, MD,Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Aylin Tekes
- Division of Pediatric Radiology and Pediatric Neuroradiology, Russell Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Lorraine A. Milio
- Department of Obstetrics & Gynecology, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Jonathan L. Brigman
- Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM
| | - Shenandoah Robinson
- Division of Pediatric Neurosurgery, Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Andrea Allan
- Department of Neurosciences, University of New Mexico School of Medicine, Albuquerque, NM
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50
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Balyan R, Hahn D, Huang H, Chidambaran V. Pharmacokinetic and pharmacodynamic considerations in developing a response to the opioid epidemic. Expert Opin Drug Metab Toxicol 2020; 16:125-141. [PMID: 31976778 PMCID: PMC7199505 DOI: 10.1080/17425255.2020.1721458] [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] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 01/22/2020] [Indexed: 12/14/2022]
Abstract
Introduction: Opioids continue to be used widely for pain management. Widespread availability of prescription opioids has led to opioid abuse and addiction. Besides steps to reduce inappropriate prescribing, exploiting opioid pharmacology to make their use safer is important.Areas covered: This article discusses the pathology and factors underlying opioid abuse. Pharmacokinetic and pharmacodynamic properties affecting abuse liability of commonly abused opioids have been highlighted. These properties inform the development of ideal abuse deterrent products. Mechanisms and cost-effectiveness of available abuse deterrent products have been reviewed in addition to the pharmacology of medications used to treat addiction.Expert opinion: The opioid crisis presents unique challenges to managing pain effectively given the limited repertoire of strong analgesics. The 5-point strategy to combat the opioid crisis calls for better preventive, treatment, and recovery services, better data, better pain management, better availability of overdose-reversing drugs and better research. There is an urgent need to decrease the cost of abuse deterrent opioids which deters their cost-effectiveness. In addition, discovery of novel analgesics, further insight into central and peripheral pain mechanisms, understanding genomic risk profiles for efficient targeted efforts, and education will be key to winning this fight against the opioid crisis.
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Affiliation(s)
- Rajiv Balyan
- Department of Anesthesia, Cincinnati Children’s Hospital Medical Center, Cincinnati, USA
- Division of Clinical Pharmacology, Cincinnati Children’s Hospital Medical Center, Cincinnati, USA
| | - David Hahn
- Division of Clinical Pharmacology, Cincinnati Children’s Hospital Medical Center, Cincinnati, USA
| | - Henry Huang
- Department of Anesthesia, Cincinnati Children’s Hospital Medical Center, Cincinnati, USA
| | - Vidya Chidambaran
- Department of Anesthesia, Cincinnati Children’s Hospital Medical Center, Cincinnati, USA
- Department of Pediatrics, College of Medicine, University of Cincinnati, Cincinnati, USA
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