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Opioid dependence

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https://www.readbyqxmd.com/read/29778745/phytohormone-abscisic-acid-elicits-antinociceptive-effects-in-rats-through-the-activation-of-opioid-and-peroxisome-proliferator-activated-receptors-%C3%AE-%C3%AE
#1
Mahtab Mollashahi, Mehdi Abbasnejad, Saeed Esmaeili-Mahani
The phytohormone abscisic acid exists in animal tissues particularly in the brain. However, its neurophysiological effects have not yet been fully clarified. This study was designed to evaluate the possible antinociceptive effects of abscisic acid on animal models of pain and determine its possible signaling mechanism. Tail-flick, hot-plate and formalin tests were used to assess the nociceptive threshold. All experiments were carried out on male Wistar rats. To determine the role of Peroxisome proliferator-activated receptor β/δ (PPARβ/δ) and opioid receptors on the induction of abscisic acid antinociception, specific antagonists were injected 15min before abscisic acid...
May 17, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29778626/factors-underlying-risk-taking-in-heroin-dependent-individuals-feedback-processing-and-environmental-contingencies
#2
Daniella M Saleme, Bruno Kluwe-Schiavon, Abdrabo Soliman, Błażej Misiak, Dorota Frydecka, Ahmed A Moustafa
Evidence suggests that factors influencing risk-taking include whether decisions are made based on emotions (affective systems) or cognitions (deliberative systems), the processing of feedback (e.g., deciding to attend a rehabilitation facility for opioid addiction treatment after an intervention held by a family member), and attention to environmental contingencies (e.g., considering the probability of an outcome such as the likelihood of contracting tetanus from a shared needle; or the gains and losses associated with a decision, such as the benefits and costs of taking drugs)...
May 17, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/29778009/exploring-opioid-use-disorder-its-impact-and-treatment-among-individuals-experiencing-homelessness-as-part-of-a-family
#3
Avik Chatterjee, Eun Jin Yu, Lindsay Tishberg
BACKGROUND: Opioid Use Disorder (OUD) causes significant morbidity and mortality among people experiencing homelessness. We aimed to explore the unique way in which OUD impacts individuals experiencing homelessness as part of a family. METHODS: We conducted semi-structured interviews with adults experiencing OUD staying in Boston-area family shelters along with dependent children. We used Borkan's Immersion-Crystallization method to uncover themes from interview transcripts...
May 12, 2018: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/29777732/antinociceptive-effect-of-tadalafil-in-various-pain-models-involvement-of-opioid-receptors-and-nitric-oxide-cyclic-gmp-pathways
#4
Mohammad M Mehanna, Souraya Domiati, Hania Nakkash Chmaisse, Ahmed El Mallah
Nitric oxide has been proven to play an important role in nociception, accordingly, its promoters, phosphodiesterase inhibitors have been investigated as pain response modulators. Aiming to evaluate the central effect of tadalafil, a phosphodiesterase 5 inhibitor, and to determine its EC50, tail flick and hot plate tests were utilized. On the other hand, its nociceptive peripheral analgesic effect was assessed through acetic-acid induced writhing model. Formalin test was used to appraise both non-inflammatory and inflammatory pain responses...
May 16, 2018: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29776349/randomised-controlled-trial-rct-of-cannabinoid-replacement-therapy-nabiximols-for-the-management-of-treatment-resistant-cannabis-dependent-patients-a-study-protocol
#5
Anjali K Bhardwaj, David J Allsop, Jan Copeland, Iain S McGregor, Adrian Dunlop, Marian Shanahan, Raimondo Bruno, Nghi Phung, Mark Montebello, Craig Sadler, Jessica Gugusheff, Melissa Jackson, Jennifer Luksza, Nicholas Lintzeris
BACKGROUND: The cannabis extract nabiximols (Sativex®) effectively supresses withdrawal symptoms and cravings in treatment resistant cannabis dependent individuals, who have high relapse rates following conventional withdrawal treatments. This study examines the efficacy, safety and cost-effectiveness of longer-term nabiximols treatment for outpatient cannabis dependent patients who have not responded to previous conventional treatment approaches. METHODS/DESIGN: A phase III multi-site outpatient, randomised, double-blinded, placebo controlled parallel design, comparing a 12-week course of nabiximols to placebo, with follow up at 24 weeks after enrolment...
May 18, 2018: BMC Psychiatry
https://www.readbyqxmd.com/read/29770121/overexpression-of-thioredoxin-1-blocks-morphine-induced-conditioned-place-preference-through-regulating-the-interaction-of-%C3%AE-aminobutyric-acid-and-dopamine-systems
#6
Xiang Li, Mengbing Huang, Lihua Yang, Ningning Guo, Xiaoyan Yang, Zhimin Zhang, Ming Bai, Lu Ge, Xiaoshuang Zhou, Ye Li, Jie Bai
Morphine is one kind of opioid, which is currently the most effective widely utilized pain relieving pharmaceutical. Long-term administration of morphine leads to dependence and addiction. Thioredoxin-1 (Trx-1) is an important redox regulating protein and works as a neurotrophic cofactor. Our previous study showed that geranylgeranylaceton, an inducer of Trx-1 protected mice from rewarding effects induced by morphine. However, whether overexpression of Trx-1 can block morphine-induced conditioned place preference (CPP) in mice is still unknown...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29769809/managing-infants-born-to-mothers-who-have-used-opioids-during-pregnancy
#7
Thierry Lacaze-Masmonteil, Pat O'Flaherty
The incidence of infant opioid withdrawal has grown rapidly in many countries, including Canada, in the last decade, presenting significant health and early brain development concerns. Increased prenatal exposure to opioids reflects rising prescription opioid use as well as the presence of both illegal opiates and opioid-substitution therapies. Infants are at high risk for experiencing symptoms of abstinence or withdrawal that may require assessment and treatment. This practice point focuses specifically on the effect(s) of opioid withdrawal and current management strategies in the care of infants born to mothers with opioid dependency...
May 2018: Paediatrics & Child Health
https://www.readbyqxmd.com/read/29768187/activation-of-kappa-opioid-receptors-in-the-dorsal-raphe-have-sex-dependent-effects-on-social-behavior-in-california-mice
#8
Emily C Wright, Tiffany V Parks, Jonathon O Alexander, Rajesh Supra, Brian C Trainor
Kappa opioid receptor activation has been linked to stress and anxiety behavior, thus leading to kappa antagonists being popularized in research as potential anxiolytics. However, while these findings may hold true in standard models, the neuromodulatory effects of social defeat may change the behavioral outcome of kappa opioid receptor activation. Previous research has shown that social defeat can lead to hyperactivity of serotonergic neurons in the dorsal raphe nucleus, and that inhibition of this increase blocks the social deficits caused by defeat...
May 13, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/29763654/obturator-neuromodulation-with-laparoscopic-placement-of-an-obturator-lead-for-the-treatment-of-intractable-opioid-dependent-chronic-pelvic-pain-due-to-obturator-neuralgia
#9
Richard P Marvel
Chronic pelvic pain(CPP) is a common condition in women that can have a devastating effect on quality of life. Some of the most severe forms of CPP are related to peripheral nerve injuries causing persistent neuropathic pain. This is a case of a young woman with severe opioid dependent chronic pelvic and right groin pain due to obturator neuralgia. She had failed a multitude of treatments including multiple medications, manual physical therapy, nerve blocks, surgical neurolysis and spinal cord stimulation without significant benefit...
May 12, 2018: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/29763278/implantable-buprenorphine-probuphine-for-maintenance-treatment-of-opioid-dependence
#10
Nancy Hope Goodbar, Katherine E Hanlon
No abstract text is available yet for this article.
May 15, 2018: American Family Physician
https://www.readbyqxmd.com/read/29760569/concomitant-use-of-opioid-medications-with-triptans-or-serotonergic-antidepressants-in-us-office-based-physician-visits
#11
Kyle C Molina, Kathleen A Fairman, David A Sclar
Background: Opioids are not recommended for routine treatment of migraine because their benefits are outweighed by risks of medication overuse headache and abuse/dependence. A March 2016 US Food and Drug Administration (FDA) safety communication warned of the risk of serotonin syndrome from using opioids concomitantly with 5-hydroxytryptamine receptor agonists (triptans) or serotonergic antidepressants: selective serotonin reuptake inhibitors (SSRIs) or serotonin-norepinephrine reuptake inhibitors (SNRIs)...
2018: Drug, Healthcare and Patient Safety
https://www.readbyqxmd.com/read/29757600/dark-classics-in-chemical-neuroscience-morphine
#12
Andrea L Devereaux, Susan L Mercer, Christopher W Cunningham
As the major psychoactive agent in opium and direct precursor for heroin, morphine is a historically critical molecule in chemical neuroscience. A structurally complex phenanthrene alkaloid produced by Papaver somniferum, morphine has fascinated chemists seeking to disentangle pharmacologically beneficial analgesic effects from addiction, tolerance, and dependence liabilities. In this review, we will detail the history of morphine, from the first extraction and isolation by Sertürner in 1804 to the illicit use of morphine and proliferation of opioid use and abuse disorders currently ravaging the United States...
May 14, 2018: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/29755832/collaborative-phenotype-inference-from-comorbid-substance-use-disorders-and-genotypes
#13
Jin Lu, Jiangwen Sun, Xinyu Wang, Henry R Kranzler, Joel Gelernter, Jinbo Bi
Data in large-scale genetic studies of complex human diseases, such as substance use disorders, are often incomplete. Despite great progress in genotype imputation, e.g., the IMPUTE2 method, considerably less progress has been made in inferring phenotypes. We designed a novel approach to integrate individuals' comorbid conditions with their genotype data to infer missing (unreported) diagnostic criteria of a disorder. The premise of our approach derives from correlations among symptoms and the shared biological bases of concurrent disorders such as co-dependence on cocaine and opioids...
November 2017: Proceedings
https://www.readbyqxmd.com/read/29753264/perineural-dexamethasone-successfully-prolongs-adductor-canal-block-when-assessed-by-objective-pinprick-sensory-testing-a-prospective-randomized-dose-dependent-placebo-controlled-equivalency-trial
#14
James D Turner, Daryl S Henshaw, Robert S Weller, J Douglas Jaffe, Christopher J Edwards, J Wells Reynolds, Gregory B Russell, Sean W Dobson
STUDY OBJECTIVE: To determine whether perineural dexamethasone prolongs peripheral nerve blockade (PNB) when measured objectively; and to determine if a 1 mg and 4 mg dose provide equivalent PNB prolongation compared to PNB without dexamethasone. SETTING: Multiple studies have reported that perineural dexamethasone added to local anesthetics (LA) can prolong PNB. However, these studies have relied on subjective end-points to quantify PNB duration. The optimal dose remains unknown...
May 8, 2018: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/29753041/nociceptin-orphanin-fq-opioid-peptide-nop-receptor-and-%C3%A2%C2%B5-opioid-peptide-mop-receptors-both-contribute-to-the-anti-hypersensitive-effect-of-cebranopadol-in-a-rat-model-of-arthritic-pain
#15
Klaus Schiene, Wolfgang Schröder, Klaus Linz, Stefanie Frosch, Thomas M Tzschentke, Ulla Jansen, Thomas Christoph
Cebranopadol is a novel, first-in-class analgesic with agonist activity at the nociceptin/orphanin FQ opioid peptide (NOP) receptor as well as the classical opioid peptide receptors. This study investigated the anti-hypersensitive effect of cebranopadol in a rat model of arthritic pain. Selective antagonists were used to probe the involvement of the NOP receptor and the µ-opioid peptide (MOP) receptors. Experimental mono-arthritis was induced by intra-articular injection of complete Freund's adjuvant into the left hind knee joint...
May 9, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29752818/fluoxetine-uses-in-nociceptive-pain-management-a-promising-adjuvant-to-opioid-analgesics
#16
Mostafa M Hamdy, Mohamed M Elbadr, Ahmed Barakat
Fluoxetine, a commonly prescribed antidepressant, use in nociceptive pain management represent one of the unsettled issues of fluoxetine therapeutics. By reviewing the literature about fluoxetine's possible roles in this setting; those could be solitary antinociceptive effect, enhancement of acute morphine analgesia, blocking morphine tolerance development, and blocking dependence development and associated abstinence syndrome. In this study, we examined those four alleged roles of fluoxetine. Moreover, since effective alleviation of morphine tolerance, dependence, and abstinence syndrome represents one of the most challenging medical needs, we biochemically analyzed fluoxetine effect on these phenomena...
May 12, 2018: Fundamental & Clinical Pharmacology
https://www.readbyqxmd.com/read/29751227/ampa-receptor-positive-allosteric-modulators-attenuate-morphine-tolerance-and-dependence
#17
Xiaoyu Hu, Xuebi Tian, Xiao Guo, Ying He, Haijun Chen, Jia Zhou, Zaijie Jim Wang
Development of opioid tolerance and dependence hinders the use of opioids for the treatment of chronic pain. In searching for the mechanism and potential intervention for opioid tolerance and dependence, we studied the action of two positive allosteric modulators of the α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPAR PAMs). In mice treated with morphine (100 mg/kg, s.c.), acute morphine tolerance and dependence developed in 4-6 h. Treatment with aniracetam, a well-established AMPAR PAM, was able to completely prevent and reverse the development of acute antinociceptive tolerance to morphine...
April 25, 2018: Neuropharmacology
https://www.readbyqxmd.com/read/29749059/global-statistics-on-alcohol-tobacco-and-illicit-drug-use-2017-status-report
#18
REVIEW
Amy Peacock, Janni Leung, Sarah Larney, Samantha Colledge, Matthew Hickman, Jürgen Rehm, Gary A Giovino, Robert West, Wayne Hall, Paul Griffiths, Robert Ali, Linda Gowing, John Marsden, Alize J Ferrari, Jason Grebely, Michael Farrell, Louisa Degenhardt
AIMS: This review provides an up-to-date curated source of information on alcohol, tobacco, and illicit drug use and their associated mortality and burden of disease. Limitations in the data are also discussed, including how these can be addressed in the future. METHODS: Online data sources were identified through expert review. Data were mainly obtained from the World Health Organization, United Nations Office on Drugs and Crime, and Institute for Health Metrics and Evaluation...
May 10, 2018: Addiction
https://www.readbyqxmd.com/read/29749025/photobiomodulation-induces-antinociception-recovers-structural-aspects-and-regulates-mitochondrial-homeostasis-in-peripheral-nerve-of-diabetic-mice
#19
Victória Regina da Silva de Oliveira, Diego Pulzatto Cury, Laura Basílio Yamashita, Marcos Vinicius Esteca, Ii-Sei Watanabe, Yoko Fee Bergmann, Elaine Flamia Toniolo, Camila Squarzoni Dale
Diabetic Peripheral Neuropathy (DPN) is a nervous disorder caused by diabetes mellitus, affecting about 50% of patients in clinical medicine. Chronic pain is one of the major and most unpleasant symptoms developed by those patients, and conventional available treatments for the neuropathy, including the associated pain, are still unsatisfactory and benefit only a small number of patients. Photobiomodulation (PBM) has been gaining clinical acceptance once it is able to promote early nerve regeneration resulting in significant improvement peripheral nerves disabilities...
May 11, 2018: Journal of Biophotonics
https://www.readbyqxmd.com/read/29743920/electroacupuncture-alleviates-pain-responses-and-inflammation-in-a-rat-model-of-acute-gout-arthritis
#20
Wenxin Chai, Yan Tai, Xiaomei Shao, Yi Liang, Guo-Qing Zheng, Ping Wang, Jianqiao Fang, Boyi Liu
Acute gout arthritis is one of the most painful inflammatory conditions. Treatments for gout pain are limited to colchicine, nonsteroidal anti-inflammatory drugs, and corticosteroids, which oftentimes result in severe adverse effects. Electroacupuncture (EA) has been proved to be effective in relieving many inflammatory pain conditions with few side effects. Here, we aim to investigate the therapeutic potentials of EA on pain and inflammation of a rat model of acute gout arthritis and underlying mechanisms...
2018: Evidence-based Complementary and Alternative Medicine: ECAM
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