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https://www.readbyqxmd.com/read/28077540/leukemia-inhibitory-factor-lif-potentiates-antinociception-activity-and-inhibits-tolerance-induction-of-opioids
#1
H J Tu, K H Kang, S Y Ho, H C Liou, H H Liou, C P Lin, W M Fu
BACKGROUND: The efficacy of opioids typically decreases after long-term use owing to the development of tolerance. Glial activation and the upregulation of proinflammatory cytokines are related to the induction of tolerance. We investigated the effect of leukemia inhibitory factor (LIF) on morphine analgesia and tolerance. METHODS: LIF concentrations in rat spinal cords were measured by polymerase chain reaction (PCR) and enzyme-linked immunosorbent assay (ELISA) after morphine administration...
October 2016: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28072795/treatment-outcomes-for-patients-with-failed-back-surgery
#2
Jae Hwan Cho, Jae Hyup Lee, Kwang Sup Song, Jae-Young Hong, Yoon-Suk Joo, Dong-Ho Lee, Chang Ju Hwang, Choon Sung Lee
BACKGROUND: Failed back surgery syndrome (FBSS) is a frequently encountered disease entity following lumbar spinal surgery. Although many plausible reasons have been investigated, the exact pathophysiology remains unknown. Various medications, reoperations, interventions such as spinal cord stimulation, epidural adhesiolysis or epidural injection, exercise therapy, and psychotherapy have been suggested treatment options. However, the evidence of the clinical outcome for each treatment has not been clearly determined...
January 2017: Pain Physician
https://www.readbyqxmd.com/read/28067693/intraoperative-ketamine-reduces-immediate-postoperative-opioid-consumption-after-spinal-fusion-surgery-in-chronic-pain-patients-with-opioid-dependency-a-randomized-blinded-trial
#3
Rikke Vibeke Nielsen, Jonna Storm Fomsgaard, Hanna Siegel, Robertas Martusevicius, Lone Nikolajsen, Jørgen Berg Dahl, Ole Mathiesen
Perioperative handling of surgical patients with opioid dependency represents an important clinical problem. Animal studies suggest that ketamine attenuates central sensitization and hyperalgesia and thereby reduces postoperative opioid tolerance. We hypothesized that intraoperative ketamine would reduce immediate postoperative opioid consumption compared to placebo in chronic pain patients with opioid dependency undergoing lumbar spinal fusion surgery. Primary outcome was morphine consumption 0-24 h postoperatively...
January 6, 2017: Pain
https://www.readbyqxmd.com/read/28034782/spinal-trpc6-channels-contributes-to-morphine-induced-antinociceptive-tolerance-and-hyperalgesia-in-rats
#4
Hua Jin, Ying-Tong Sun, Guang-Qiong Guo, Da-Lin Chen, Yu-Jin Li, Gao-Peng Xiao, Xin-Nan Li
The chronic administration of opioids results in the development of morphine analgesic tolerance and withdrawl-induced hyperalgesia, which limits their clinical utility in pain treatment. However, the cellular mechanisms underlying opioid-induced tolerance and hyperalgesia are not fully understood. The transient receptor potential canonical channel TRPC6 is important for brain development and function, as it regulates cytosolic, endoplasmic reticulum, and mitochondrial Ca(2+) levels in neural cells. Here, we report that TRPC6 expression in the spinal cord was up-regulated after chronic morphine treatment...
December 26, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/28025843/10-khz-high-frequency-spinal-cord-stimulation-for-chronic-axial-low-back-pain-in-patients-with-no-history-of-spinal-surgery-a-preliminary-prospective-open-label-and-proof-of-concept-study
#5
Adnan Al-Kaisy, Stefano Palmisani, Thomas E Smith, David Pang, Khai Lam, William Burgoyne, Russell Houghton, Emma Hudson, Jonathan Lucas
OBJECTIVE: To explore the effectiveness of 10 kHz high frequency spinal cord stimulation (HF10 therapy) treatment of chronic low back pain in patients who have not had spinal surgery. METHODS: Patients with chronic low back pain without prior spinal surgery were evaluated by a team of spine surgeons to rule out any spinal pathology amenable to surgical interventions and by a multidisciplinary pain team to confirm eligibility for the study. After a successful (>50% back pain reduction) trial of HF10 therapy, enrolled subjects underwent permanent system implantation and were followed-up one year post-implant...
December 26, 2016: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/28025354/the-effectiveness-and-risks-of-non-image-guided-lumbar-interlaminar-epidural-steroid-injections-a-systematic-review-with-comprehensive-analysis-of-the-published-data
#6
REVIEW
Yakov Vorobeychik, Anil Sharma, Clark C Smith, David C Miller, Milan P Stojanovic, Steve M Lobel, Marc A Valley, Belinda Duszynski, David J Kennedy
OBJECTIVE: To determine the effectiveness and risks of non-image-guided lumbar interlaminar epidural steroid injections. DESIGN: Systematic review. INTERVENTIONS: Three reviewers with formal training and certification in evidence-based medicine searched the literature on non-image-guided lumbar interlaminar epidural steroid injections. A larger team of seven reviewers independently assessed the methodology of studies found and appraised the quality of the evidence presented...
December 2016: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28024664/long-term-use-of-opioids-in-210-officially-registered-patients-with-chronic-noncancer-pain-in-taiwan-a-cross-sectional-study
#7
Tso-Chou Lin, Luo-Ping Ger, Joseph V Pergolizzi, Robert B Raffa, Ju-O Wang, Shung-Tai Ho
BACKGROUND/PURPOSE: Prescribing opioids for chronic noncancer pain has been strictly regulated for two decades in Taiwan. The aim of this study was to survey the patients' perspectives and potential drawbacks following long-term use of opioids. METHODS: An observational cross-sectional survey using the Taiwanese version of Brief Pain Inventory was conducted among outpatients with chronic noncancer pain registered by the Taiwan Food and Drug Administration. Patients were also asked about their sexual behavior, depression, opioid misuse behaviors, and use of complementary and alternative medicine...
December 23, 2016: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/28004735/blockade-of-neuronal-dopamine-d2-receptor-attenuates-morphine-tolerance-in-mice-spinal-cord
#8
Wen-Ling Dai, Feng Xiong, Bing Yan, Zheng-Yu Cao, Wen-Tao Liu, Ji-Hua Liu, Bo-Yang Yu
Tolerance induced by morphine remains a major unresolved problem and significantly limits its clinical use. Recent evidences have indicated that dopamine D2 receptor (D2DR) is likely to be involved in morphine-induced antinociceptive tolerance. However, its exact effect and molecular mechanism remain unknown. In this study we examined the effect of D2DR on morphine antinociceptive tolerance in mice spinal cord. Chronic morphine treatment significantly increased levels of D2DR in mice spinal dorsal horn. And the immunoreactivity of D2DR was newly expressed in neurons rather than astrocytes or microglia both in vivo and in vitro...
December 22, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27997083/acute-sacral-nerve-stimulation-reduces-visceral-mechanosensitivity-in-a-cross-organ-sensitization-model
#9
L D Langlois, E Le Long, M Meleine, M Antor, K Atmani, P Dechelotte, A M Leroi, G Gourcerol
BACKGROUND: Sacral nerve stimulation (SNS) is a surgical treatment of fecal and urinary incontinence that consists of inserting a stimulating electrode into one of the s3 or s4 sacral holes. In addition to the benefit of SNS in the treatment of incontinence, recent studies showed that SNS is effective in the treatment of irritable bowel syndrome as well as bladder pain syndrome. The aim of this study was to evaluate the effect of SNS on visceral mechanosensitivity in a cross-organ sensitization rat model...
November 7, 2016: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/27994790/a-nationwide-retrospective-study-of-opioid-management-patterns-in-2-468-patients-with-spinal-pain-in-korea
#10
Sung-Soo Chung, Chun-Kun Park, Kyu-Jung Cho, Kyoung Hyo Choi, Jin-Hyok Kim, Sung-Bum Kim, Sung-Uk Kuh, Jae Chul Lee, Jae Hyup Lee, Kyu-Yeol Lee, Sun-Ho Lee, Seong-Hwan Moon, Si-Young Park, Jae Hang Shim, Byung-Chul Son, Myung Ha Yoon, Hye-Jeong Park
STUDY DESIGN: Retrospective patient data collection and investigator survey. PURPOSE: To investigate patterns of opioid treatment for pain caused by spinal disorders in Korea. OVERVIEW OF LITERATURE: Opioid analgesic prescription and adequacy of consumption measures in Korea have markedly increased in the past decade, suggesting changing patterns in pain management practice; however, there is lack of integrated data specific to Korean population...
December 2016: Asian Spine Journal
https://www.readbyqxmd.com/read/27989852/cortical-and-spinal-assessment-a-comparative-study-using-encephalography-and-the-nociceptive-withdrawal-reflex
#11
I W Fischer, M Gram, T M Hansen, A Brokjaer, C Graversen, L P Malver, C D Mørch, L L Christrup, A M Drewes, A E Olesen
BACKGROUND: Standardized objective methods to assess the analgesic effects of opioids, enable identification of underlying mechanisms of drug actions in the central nervous system. Opioids may exert their effect on both cortical and spinal levels. In this study actions of morphine at both levels were investigated, followed by analysis of a possible correlation between the cortical processing and spinal transmission. METHODS: The study was conducted after a double-blinded, two-way crossover design in thirty-nine healthy participants...
October 29, 2016: Journal of Pharmacological and Toxicological Methods
https://www.readbyqxmd.com/read/27989510/concurrent-bullatine-a-enhances-morphine-antinociception-and-inhibits-morphine-antinociceptive-tolerance-by-indirect-activation-of-spinal-%C3%AE%C2%BA-opioid-receptors
#12
Qian Huang, Ming-Li Sun, Yuan Chen, Xin-Yan Li, Yong-Xiang Wang
ETHNOPHARMACOLOGICAL RELEVANCE: Bullatine A, a C20-diterpenoid alkaloid and one of the major effective ingredients in Aconiti brachypodi Radix (Xue-shang-yi-zhi-hao), can block pain hypersensitivity in a variety of rodent models through expression of spinal microglial dynorphin A. AIM OF THE STUDY: To assess the interaction between bullatine A and morphine on antinociception in acute nociception and pain hypersensitivity states, with the exogenous synthetic dynorphin A as a comparison MATERIALS AND METHODS: Spinal nerve ligation-induced neuropathic rats and naïve mice were used for assessing the acute and chronic interactions of bullatine A/dynorphin A with morphine...
January 20, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27984230/transversus-abdominis-plane-block-versus-wound-infiltration-for-analgesia-after-cesarean-delivery-a-randomized-controlled-trial
#13
Mohamed Mohamed Tawfik, Yaser Mohamed Mohamed, Rania Elmohamadi Elbadrawi, Mostafa Abdelkhalek, Maiseloon Mostafa Mogahed, Hanaa Mohamed Ezz
BACKGROUND: Transversus abdominis plane (TAP) block and local anesthetic wound infiltration provide analgesia after cesarean delivery. Studies comparing the 2 techniques are scarce, with conflicting results. This double-blind, randomized controlled trial aimed to compare bilateral ultrasound-guided TAP block with single-shot local anesthetic wound infiltration for analgesia after cesarean delivery performed under spinal anesthesia. We hypothesized that the TAP block would decrease postoperative cumulative fentanyl consumption at 24 hours...
December 15, 2016: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/27984226/intraperitoneal-instillation-of-lidocaine-improves-postoperative-analgesia-at-cesarean-delivery-a-randomized-double-blind-placebo-controlled-trial
#14
Ruchira Patel, Jose C A Carvalho, Kristi Downey, Marcelo Kanczuk, Paul Bernstein, Naveed Siddiqui
BACKGROUND: Cesarean delivery is a commonly performed procedure worldwide. Despite improvements in balanced multimodal analgesia, there remains a proportion of women for whom postoperative pain relief and patient satisfaction are still inadequate. Intraperitoneal instillation of local anesthetic has been shown to be effective in reducing postoperative pain after abdominal surgery. We sought to investigate the effect of intraperitoneal instillation of lidocaine on postcesarean delivery pain as part of a multimodal analgesia regimen...
December 15, 2016: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/27984097/anti-allodynic-effect-of-mangiferin-in-neuropathic-rats-involvement-of-nitric-oxide-cyclic-gmp-atp-sensitive-k-channels-pathway-and-serotoninergic-system
#15
Antonio Espinosa de Los Monteros-Zuñiga, Teresa Izquierdo, Geovanna Nallely Quiñonez-Bastidas, Héctor Isaac Rocha-González, Beatriz Godínez-Chaparro
The neurobiology of neuropathic pain is caused by injury in the central or peripheral nervous system. Recent evidence points out that mangiferin shows anti-nociceptive effect in inflammatory pain. However, its role in inflammatory and neuropathic pain and the possible mechanisms of action are not yet established. The purpose of this study was to determine the possible anti-allodynic effect of mangiferin in rats with spinal nerve ligation (SNL). Furthermore, we sought to investigate the possible mechanisms of action that contribute to these effects...
October 28, 2016: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/27935110/involvement-of-opioid-receptors-in-inhibition-of-bladder-overactivity-induced-by-sacral-neuromodulation-in-pigs-a-possible-action-mechanism
#16
Xing Li, Limin Liao, Guoqing Chen, Zhaoxia Wang, Han Deng
AIMS: To determine the role of opioid receptors in the inhibition of bladder overactivity by sacral neuromodulation (SNM) in pigs, and explore the possible mechanism of SNM. METHODS: Both implant-driven stimulators of the S3 spinal nerve were implanted in seven pigs. Naloxone and tramadol were administered. Multiple cystometrograms were performed to determine the effects of SNM and opioid receptors on the micturition reflex by infusing normal saline (NS) or acetic acid (AA)...
December 9, 2016: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/27932310/loss-of-dopamine-d1-receptors-and-diminished-d1-5-receptor-mediated-erk-phosphorylation-in-the-periaqueductal-gray-after-spinal-cord-lesion
#17
Pamela J Voulalas, Yadong Ji, Li Jiang, Jamila Asgar, Jin Y Ro, Radi Masri
Neuropathic pain resulting from spinal cord injury is often accompanied by maladaptive plasticity of the central nervous system, including the opioid receptor-rich periaqueductal gray (PAG). Evidence suggests that sensory signaling via the PAG is robustly modulated by dopamine D1- and D2-like receptors, but the effect of damage to the spinal cord on D1 and D2 receptor protein expression and function in the PAG has not been examined. Here we show that 21days after a T10 or C6 spinothalamic tract lesion, both mice and rats display a remarkable decline in the expression of D1 receptors in the PAG, revealed by western blot analysis...
December 5, 2016: Neuroscience
https://www.readbyqxmd.com/read/27927519/a-rapid-recovery-pathway-for-adolescent-idiopathic-scoliosis-that-improves-pain-control-and-reduces-time-to-inpatient-recovery-after-posterior-spinal-fusion
#18
Alex L Gornitzky, John M Flynn, Wallis T Muhly, Wudbhav N Sankar
STUDY DESIGN: Retrospective comparative cohort. OBJECTIVES: To determine if a standardized multimodal analgesic and rehabilitation protocol (rapid recovery pathway [RRP]) in adolescent idiopathic scoliosis (AIS) patients undergoing posterior spinal fusion (PSF) could improve pain control, reduce opioid-related complications, and expedite early mobilization. BACKGROUND: Several reports have described postoperative recovery pathways for AIS patients undergoing PSF that shorten length of stay (LOS) without reporting the impact such pathways might have on patients' pain or quality of recovery...
July 2016: Spine Deformity
https://www.readbyqxmd.com/read/27922573/vertebroplasty-and-return-to-work-for-thoracolumbar-fractures-within-the-workers-compensation-population
#19
Jay M Levin, Joshua T Anderson, Arnold R Haas, Rick Percy, Stephen T Woods, Uri M Ahn, Nicholas U Ahn
STUDY DESIGN: Retrospective cohort study OBJECTIVE.: Analyze efficacy of vertebroplasty and its affect on return to work (RTW) in a workers' compensation (WC) population SUMMARY OF BACKGROUND DATA.: Vertebroplasty remains a controversial treatment modality for vertebral compression fractures (VCFs). No studies have analyzed use of vertebroplasty in the clinically distinct WC population. METHODS: A total of 371 Ohio WC subjects were identified who sustained VCFs and were treated with either vertebroplasty or conservative medical therapy between 1993 and 2013 using Current Procedural Terminology procedural and International Classification of Diseases, Ninth Revision diagnosis codes...
December 2, 2016: Spine
https://www.readbyqxmd.com/read/27913981/the-challenges-of-anaesthesia-and-pain-relief-in-hip-fracture-care
#20
Rachel Cowan, Jun Hao Lim, Terence Ong, Ashok Kumar, Opinder Sahota
The care of the older person with hip fracture is complicated by their comorbid condition, limited physiological reserve, cognitive impairment and frailty. Two aspects of hip fracture management that have received considerable attention are how best to manage the pain associated with it and the ideal mode of anaesthesia. Existing literature has reported on the suboptimal treatment of pain in this orthogeriatric cohort. With recent advancements in medical care, a number of options have emerged as alternatives to conservative systemic analgesia...
December 3, 2016: Drugs & Aging
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