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morphine tolerance

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https://www.readbyqxmd.com/read/29121695/the-effect-of-preoperative-physical-status-on-pain-management-in-total-knee-arthroplasty-patients-receiving-adductor-canal-blockade
#1
Chukwuweike U Gwam, Jaydev B Mistry, Nequesha S Mohamed, Nicole E George, Jennifer I Etcheson, Sana Virani, Ryan Skalsky, Shreya Singh, Nicolas S Piuzzi, Ronald E Delanois
INTRODUCTION: Managing postoperative pain can be challenging for arthroplasty surgeons. While pain control modalities, such as adductor canal blockade (ACB), have been proven effective, the multifactorial nature of pain perception may serve as an obstacle for optimizing pain control. This study assesses the effect of patient pre-operative physical status on patient perception of pain. Specifically, we compared 1) lengths of hospital stay (LOS), 2) pain levels, and 3) opioid consumption in patients receiving total knee arthroplasty (TKA) who presented with an American Society of Anesthesiologists physical status score (ASA) of 2 and 3...
November 9, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/29121531/decreased-pain-tolerance-before-surgery-and-increased-postoperative-narcotic-requirements-in-abstinent-tobacco-smokers
#2
Ling Shen, Kai Wei, Qianbo Chen, Haibo Qiu, Yong Tao, Qiang Yao, Jinchao Song, Chengjian Li, Liang Zhao, Yantao Liu, Zhijie Lu
INTRODUCTION: The clinical influence of smoking cessation on pain tolerance before surgery and postoperative pain perception is not fully understood. This clinical study investigated the effect of smoking cessation on pain threshold during the perioperative period in patients undergoing hepatic resection. METHODS: We enrolled 148 male patients (68 non-smokers and 80 abstinent smokers) who underwent hepatic resection and received postoperative patient-controlled intravenous analgesia...
October 28, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/29120699/tolerability-response-and-outcome-of-high-risk-neuroblastoma-patients-treated-with-long-term-infusion-of-anti-gd2-antibody-ch14-18-cho
#3
Ina Mueller, Karoline Ehlert, Stefanie Endres, Lena Pill, Nikolai Siebert, Silke Kietz, Penelope Brock, Alberto Garaventa, Dominique Valteau-Couanet, Evelyne Janzek, Norbert Hosten, Andreas Zinke, Winfried Barthlen, Emine Varol, Hans Loibner, Ruth Ladenstein, Holger N Lode
Immunotherapy with short term infusion (STI) of monoclonal anti-GD2 antibody (mAb) ch14.18 (4 × 25mg/m(2)/d; 8-20h) in combination with cytokines and 13-cis retinoic acid (RA) prolonged survival in high-risk neuroblastoma (NB) patients. Here, we investigated long-term infusion (LTI) of ch14.18 produced in Chinese hamster ovary cells (ch14.18/CHO; 10 × 10mg/m(2); 24h) in combination with subcutaneous (s.c.) interleukin-2 (IL-2) in a single center program and report clinical response, toxicity and survival...
November 9, 2017: MAbs
https://www.readbyqxmd.com/read/29111854/the-effect-of-morphine-upon-dna-methylation-in-ten-regions-of-the-rat-brain
#4
Timothy M Barrow, Hyang-Min Byun, Xinyan Li, Chris Smart, Yong-Xiang Wang, Yacong Zhang, Andrea A Baccarelli, Liqiong Guo
Morphine is one of the most effective analgesics in medicine. However, its use is associated with the development of tolerance and dependence. Recent studies demonstrating epigenetic changes in the brain after exposure to opiates have provided insight into mechanisms possibly underlying addiction. In this study, we sought to identify epigenetic changes in ten regions of the rat brain following acute and chronic morphine exposure. We analyzed DNA methylation of six nuclear-encoded genes implicated in brain function (Bdnf, Comt, Il1b, Il6, Nr3c1, and Tnf) and three mitochondrially-encoded genes (Mtco1, Mtco2, and Mtco3), and measured global 5-methylcytosine (5mC) and 5-hydroxymethylcytosine (5hmC) levels...
November 7, 2017: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/29101087/methadone-as-first-line-opioid-in-cancer-pain-management-a-systematic-review
#5
REVIEW
Sebastiano Mercadante, Eduardo Bruera
AIM: The objective of this review was to assess the existent evidence for the use of methadone as first line therapy in cancer pain management. METHODS: A systematic literature search on MedLine, Embase databases was carried out from each data base, setting up the date to 30 August 2017 Studies were included if methadone was a first line drug as a step 3 of WHO analgesic ladder, or at low doses (step 2), if they were conducted in adult patients with cancer pain, if they contained outcomes on pain and opioid-related adverse effects...
October 31, 2017: Journal of Pain and Symptom Management
https://www.readbyqxmd.com/read/29097440/desensitization-and-tolerance-of-mu-opioid-receptors-on-pontine-kolliker-fuse-neurons
#6
Erica S Levitt, John T Williams
Acute desensitization of mu opioid receptors is thought to be an initial step in the development of tolerance to opioids. Given the resistance of the respiratory system to develop tolerance, desensitization of neurons in the Kölliker-Fuse (KF), a key area in the respiratory circuit, was examined. The activation of G protein-coupled inwardly rectifying potassium (GIRK) current was measured using whole-cell voltage-clamp recordings from KF and locus coeruleus (LC) neurons contained in acute rat brain slices...
November 2, 2017: Molecular Pharmacology
https://www.readbyqxmd.com/read/29096659/lidocaine-alleviates-morphine-tolerance-via-ampk-socs3-dependent-neuroinflammation-suppression-in-the%C3%A2-spinal-cord
#7
Yan Zhang, Gao-Jian Tao, Liang Hu, Jie Qu, Yuan Han, Guangqin Zhang, Yanning Qian, Chun-Yi Jiang, Wen-Tao Liu
BACKGROUND: Morphine tolerance is a clinical challenge, and its pathogenesis is closely related to the neuroinflammation mediated by Toll-like receptor 4 (TLR4). In Chinese pain clinic, lidocaine is combined with morphine to treat chronic pain. We found that lidocaine sufficiently inhibited neuroinflammation induced by morphine and improved analgesic tolerance on the basis of non-affecting pain threshold. METHODS: CD-1 mice were utilized for tail-flick test to evaluate morphine tolerance...
November 2, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29071900/-progress-of-researches-on-central-mechanism-of-electroacupuncture-tolerance
#8
Lu-Ying Cui, Ming-Xing Ding
Electroacupuncture (EA) has been demonstrated effective for pain relief. However, repeated application may decline analgesic effect of EA, which is termed EA tolerance, that reduces the clinical efficacy of EA. Therefore, it has attracted attention from researchers in recent years and the progresses include:(1) acute and chronic EA tolerance animal models have been established; (2) cross-tolerance between EA and morphine; (3) Anti-opioid substances, including cholecystokinin, orphanin FQ and angiotensin Ⅱ, have been reported to contribute to EA tolerance; (4) glutamate receptors and transporters, 5-hydroxytryptamine and norepinephrine have been revealed involvement in EA tolerance; (5) cyclic adenosine monophosphate, cyclic guanosine monophosphate and Ca(2+) have been reported to be the second messengers cellularly in EA tolerance...
December 25, 2016: Zhen Ci Yan Jiu, Acupuncture Research
https://www.readbyqxmd.com/read/29062240/a-randomized-phase-iib-study-investigating-oliceridine-trv130-a-novel-%C3%A2%C2%B5-receptor-g-protein-pathway-selective-%C3%AE-gps-modulator-for-the-management-of-moderate-to-severe-acute-pain-following-abdominoplasty
#9
Neil Singla, Harold S Minkowitz, David G Soergel, David A Burt, Ruth Ann Subach, Monica Y Salamea, Michael J Fossler, Franck Skobieranda
BACKGROUND: Oliceridine (TRV130), a novel μ-receptor G-protein pathway selective (μ-GPS) modulator, was designed to improve the therapeutic window of conventional opioids by activating G-protein signaling while causing low β-arrestin recruitment to the μ receptor. This randomized, double-blind, patient-controlled analgesia Phase IIb study was conducted to investigate the efficacy, safety, and tolerability of oliceridine compared with morphine and placebo in patients with moderate to severe pain following abdominoplasty (NCT02335294; oliceridine is an investigational agent not yet approved by the US Food and Drug Administration)...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/29045243/use-of-ketamine-in-a-multimodal-analgesia-setting-for-rapid-opioid-tapering-in-a-profoundly-opioid-tolerant-patient-a-case-report
#10
Elise M Strickler, Eric S Schwenk, Mitchell J Cohen, Eugene R Viscusi
Opioids are frequently used for the treatment of chronic pain, and patients taking high doses are at increased risk of complications and adverse opioid-related events. Ketamine is appealing as an opioid adjunct because of its lack of respiratory depression and potential prevention of hyperalgesia and central sensitization. We present a case in which a ketamine infusion was utilized over a 7-day period to provide rapid taper of a daily dose of 400 mg of morphine equivalents to less than one-third of that dose on discharge with unchanged pain levels and no symptoms of opioid withdrawal...
October 17, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/29024786/neurobiological-correlates-of-pain-avoidance-like-behavior-in-morphine-dependent-and-non-dependent-rats
#11
Amanda R Pahng, Rod I Paulsen, M Adrienne McGinn, Kimberly N Edwards, Scott Edwards
Repeated use of opioids can lead to the development of analgesic tolerance and dependence. Additionally, chronic opioid exposure can cause a paradoxical emergence of heightened pain sensitivity to noxious stimuli, termed hyperalgesia, which may drive continued or escalated use of opioids to manage worsening pain symptoms. Opioid-induced hyperalgesia has traditionally been measured in rodents via reflex-based assays, including the von Frey method. To better model the cognitive/motivational dimension of pain in a state of opioid dependence and withdrawal, we employed a recently developed non-reflex-based method for measuring pain avoidance-like behavior in animals (mechanical conflict avoidance test)...
October 9, 2017: Neuroscience
https://www.readbyqxmd.com/read/29024681/potentiation-of-morphine-induced-antinociception-and-locomotion-by-citalopram-is-accompanied-by-anxiolytic-like-effects
#12
María J Varela, Arlet M Acanda de la Rocha, Alvaro Díaz, Juan F Lopez-Gimenez
Morphine and related opioids are the mainstay of analgesic treatment, especially in patients suffering chronic pain. Besides their antinociceptive effects they may also exhibit anxiolytic-like properties that could contribute to pain relief. The pharmacological manipulation of the serotonergic system may not only modulate pain transmission and processing but also other behavioral effects of opioids. The present study aimed to analyze the effect of the concurrent treatment with citalopram, a selective serotonin reuptake inhibitor, on the antinociceptive, locomotor and anxiety-related effects induced by acute and subchronic administration of morphine in mice...
October 10, 2017: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/29023859/effects-of-extremely-low-frequency-magnetic-field-on-the-development-of-tolerance-to-the-analgesic-effect-of-morphine-in-rats
#13
Majid Jadidi, Mahfouzeh Sadat Khatami, Fatemeh Mohammad-Pour, Afsaneh Bandavi, Ali Rashidy-Pour, Abbas Ali Vafaei, Abbas Ali Taherian, Hossein Miladi-Gorji
This study examined the effects of low frequency magnetic field (MF) on tolerance to analgesic effect of morphine in rats. Rats were made tolerant to morphine by injecting morphine (10 mg/kg, s) once daily for 8 consecutive days. Rats were simultaneously exposed to an MF (50 Hz at 1, 50, and 100 μT for 30 min) before, immediately, or 30 min after injection of morphine, and also exposed to a 0.5, 6, 12, and 30 Hz at 100 μT for 30 min before injection of morphine. The percentage of maximum possible effect of morphine (% MPE) was measured on the 1st, 4th, and 8th days by hot plate test...
October 11, 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/28993160/inhibition-of-morphine-tolerance-by-mrgc-receptor-via-modulation-of-interleukin-1%C3%AE-and-matrix-metalloproteinase-9-in-dorsal-root-ganglia-in-rats
#14
Yue Zhang, Kai Wang, Minyan Lin, Qi Li, Yanguo Hong
Opiate tolerance is a critical issue in pain management. Previous studies show that activation of Mas-related gene (Mrg) C receptor can modulate the development of morphine tolerance. This study was designed to investigate the underlying mechanism(s). Intrathecal (i.t.) administration of morphine (20µg) increased the expression of interleukin-1β (IL-1β) and matrix metalloproteinase-9 (MMP-9) in small- and medium-sized neurons in dorsal root ganglia (DRG). Co-administration of bovine adrenal medulla 8-22 (BAM8-22), a selective MrgC receptor agonist, via i...
October 6, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28988976/role-of-endogenous-melatoninergic-system-in-development-of-hyperalgesia-and-tolerance-induced-by-chronic-morphine-administration-in-rats
#15
Yuchao Fan, Xiao Liang, Rurong Wang, Li Song
Morphine is a widely used analgesic for various types of pain. However, its efficacy is impeded by development of hyperalgesia and tolerance. Melatonin has antinociceptive effect and is involved in morphine-induced hyperalgesia and tolerance but the mechanism of its involvement remains to be defined. In this study, we established a rat model of morphine-induced hyperalgesia and tolerance. We determined the serum level of melatonin and expression of μ-opioid receptor (MOR), melatonin receptor (MT1, MT2) and protein kinase C γ(PKCγ) in the spinal dorsal horn of the rats with morphine-induced hyperalgesia and tolerance...
October 6, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28979316/how-nitric-oxide-increases-in-diabetic-morphine-tolerated-male-rats
#16
Yassar Mortada, Khojasteh Khojasteh, Malek Zarei, Ardalan Mansouri, Masoumeh Jorjani
Neuropathic pain is a complication of inflammation, infection or some diseases such as diabetes. Opioids are used as a salvage therapy for neuropathic pain but tolerance restricts their use. In our previous study, we have observed an increase of Nitric Oxide in diabetes and in morphine tolerance. This study was performed to clarify the role of inducible nitric oxide synthase, iNOS, and cationic amino acid transporter-2, CAT-2, in these conditions. Thus male rats were divided into four groups: control, diabetic, morphine tolerated, and diabetic morphine tolerated...
2017: Iranian Journal of Pharmaceutical Research: IJPR
https://www.readbyqxmd.com/read/28975565/inhibition-of-%C3%AE-ark1-ameliorates-morphine-induced-tolerance-and-hyperalgesia-via-modulating-the-activity-of-spinal-nmda-receptors
#17
Xue Zhang, Shaorui Chen, Hong Chen, Huilin Pan, Yilin Zhao
Our previous study has proposed that increased presynaptic NMDARs activities play pivotal roles in the development of opioid tolerance and hyperalgesia, and blocking spinal NMDARs attenuates chronic morphine-induced synaptic plasticity and behavior. However, the cellular signaling mechanisms remain to be investigated. The aim of this research was to address the role of β-ARK1 in opioid analgesia. Opioid tolerance and hyperalgesia was induced by daily systemic morphine injections in rats for eight consecutive days...
October 3, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28975429/innovative-intraoral-cooling-device-better-tolerated-and-equally-effective-as-ice-cooling
#18
Java Walladbegi, Martin Gellerstedt, Anncarin Svanberg, Mats Jontell
PURPOSE: Most of the patients who receive myeloablative therapy prior to stem cell transplantation develop oral mucositis (OM). This adverse reaction manifests as oral mucosal erythema and ulcerations and may require high doses of morphine for pain alleviation. OM may also interfere with food intake and result in weight loss, a need for parenteral nutrition, and impaired quality of life. To date, there have been very few studies of evidence-based interventions for the prevention of OM...
October 3, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28974443/toxicological-aspects-of-the-interesterified-fat-from-processed-foods-influences-on-opioid-system-and-its-reward-effects-in-rats
#19
Laura H Milanesi, Karine Roversi, Caren T D Antoniazzi, Hecson J Segat, Maikel Kronbauer, Lívia F D'avila, Verônica T Dias, Marcel H M Sari, Raquel C S Barcelos, Luana H Maurer, Tatiana Emanuelli, Marilise E Burger, Fabíola Trevizol
Considering the high consumption of processed foods, interesterified fat (IF) has been used to replace trans fat, since it may harm nervous system functions. Opioids are intensely used to alleviate pain, and have a highly addictive potential. Therefore, their improper use is related to addiction, tolerance, and withdrawal syndrome. Wistar rats received soybean oil (SO) or IF during gestation, lactation and post-weaning until pups' adolescence. On post-natal day 39, animals received morphine (4 mg/kg i.p.) in the conditioned place preference (CPP) paradigm...
September 30, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28971229/role-of-the-guanine-nucleotide-binding-protein-g%C3%AE-o-in-the-development-of-morphine-tolerance-and-dependence
#20
Jennifer T Lamberts, Lisa D Rosenthal, Emily M Jutkiewicz, John R Traynor
RATIONALE: The use of morphine and other opioids for chronic pain is limited by the development of analgesic tolerance and physical dependence. Morphine produces its effects by activating the μ opioid receptor, which couples to Gαi/o-containing heterotrimeric G proteins. Evidence suggests that the antinociceptive effects of morphine are mediated by Gαo. However, the role of Gαo in the development of morphine tolerance and dependence is unknown. OBJECTIVE: The objective of the study is to evaluate the contribution of Gαo to the development of morphine tolerance and dependence in mice...
October 3, 2017: Psychopharmacology
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