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https://www.readbyqxmd.com/read/27910870/antinociceptive-profile-of-levo-tetrahydropalmatine-in-acute-and-chronic-pain-mice-models-role-of-spinal-sigma-1-receptor
#1
Dong-Wook Kang, Ji-Young Moon, Jae-Gyun Choi, Suk-Yun Kang, Yeonhee Ryu, Jin Bong Park, Jang-Hern Lee, Hyun-Woo Kim
We have recently reported that repeated systemic treatments of extract from Corydalis yanhusuo alleviate neuropathic pain and levo-tetrahydropalmatine (l-THP) is one of active components from Corydalis. We designed this study to investigate antinociceptive effect of l-THP in acute and chronic pain models and related mechanism within the spinal cord. We found that intraperitoneal pretreatment with l-THP significantly inhibited the second phase of formalin-induced pain behavior. In addition, intrathecal as well as intraperitoneal pretreatment with l-THP reduced the mechanical allodynia (MA) induced by direct activation of sigma-1 receptor (Sig-1)...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27909193/osteotomy-models-the-current-status-on-pain-scoring-and-management-in-small-rodents
#2
Annemarie Lang, Anja Schulz, Agnes Ellinghaus, Katharina Schmidt-Bleek
Fracture healing is a complex regeneration process which produces new bone tissue without scar formation. However, fracture healing disorders occur in approximately 10% of human patients and cause severe pain and reduced quality of life. Recently, the development of more standardized, sophisticated and commercially available osteosynthesis techniques reflecting clinical approaches has increased the use of small rodents such as rats and mice in bone healing research dramatically. Nevertheless, there is no standard for pain assessment, especially in these species, and consequently limited information regarding the welfare aspects of osteotomy models...
December 2016: Laboratory Animals
https://www.readbyqxmd.com/read/27909191/analgesia-in-clinically-relevant-rodent-models-of-sepsis
#3
Victor Jeger, Till Hauffe, Flora Nicholls-Vuille, Dominique Bettex, Alain Rudiger
Postoperative analgesia in rodent sepsis models has been considerably neglected in the past. However, intentions to model clinical practice, increasing awareness of animal ethics, efforts to apply the 3Rs (replacement, reduction, refinement), and stricter legislation argue for a change in this respect. In this review, we describe different concepts of analgesia in rodent models of sepsis focusing on opioid agonists as well as non-opioid analgesics. Advantages and pitfalls in study design and side-effects are discussed...
December 2016: Laboratory Animals
https://www.readbyqxmd.com/read/27900067/common-analgesic-agents-and-their-roles-in-analgesic-nephropathy-a-commentary-on-the-evidence
#4
REVIEW
Julian Yaxley
An association between non-opioid analgesic agents and chronic kidney disease has long been suspected. The presumed development of chronic renal impairment following protracted and excessive use of non-opioid analgesia is known as analgesic nephropathy. Many clinicians accept analgesic nephropathy as a real entity despite the paucity of scientific evidence. This narrative review aims to summarize the literature in the field. The weight of available observational literature suggests that long-term ingestion of paracetamol and combination mixtures of aspirin and paracetamol are likely to contribute to chronic renal impairment...
November 2016: Korean Journal of Family Medicine
https://www.readbyqxmd.com/read/27899254/thalidomide-attenuates-the-development-and-expression-of-antinociceptive-tolerance-to-%C3%AE-opioid-agonist-morphine-through-l-arginine-inos-and-nitric-oxide-pathway
#5
Muhammad Imran Khan, Sattar Ostadhadi, Faiza Mumtaz, Majid Momeny, Farima Moghaddaskho, Mahsa Hassanipour, Shahram Ejtemaei-Mehr, Ahmad Reza Dehpour
Morphine is a μ-opioid analgesic drug which is used in the treatment and management of chronic pain. However, due to development of antinociceptive tolerance its clinical use is limited. Thalidomide is an old glutamic acid derivative which recently reemerged because of its potential to counteract a number of disorders including neurodegenerative disorders. The potential underlying mechanisms and effects of thalidomide on morphine-induced antinociceptive tolerance is still elusive. Hence, the present study was designed to explore the effect of thalidomide on the development and expression of morphine antinociceptive tolerance targeting l-arginine-nitric oxide (NO) pathway in mice and T98G human glioblastoma cell line...
November 26, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27897471/use-of-risk-mitigation-practices-by-family-nurse-practitioners-prescribing-opioids-for-the-management-of-chronic-non-malignant-pain
#6
Sahil Chaudhary, Peggy Compton
BACKGROUND: Ongoing opioid analgesic use in patients suffering from chronic non-malignant pain (CNMP) has been associated with the development of opioid misuse, abuse, addiction, and overdose. To prevent these adverse outcomes, it is important that family nurse practitioners (FNPs) implement recommended risk mitigation practices (RMPs) when treating CNMP patients with opioids. METHODS: A national sample of 856 FNPs was invited to answer an online survey about their utilization of opioids and RMPs in treating CNMP...
November 29, 2016: Substance Abuse
https://www.readbyqxmd.com/read/27890602/the-endocannabinoid-hydrolysis-inhibitor-sa-57-intrinsic-antinociceptive-effects-augmented-morphine-induced-antinociception-and-attenuated-heroin-seeking-behavior-in-mice
#7
Jenny L Wilkerson, Sudeshna Ghosh, Mohammed Mustafa, Rehab A Abdullah, Micah J Niphakis, Roberto Cabrera, Rafael L Maldonado, Benjamin F Cravatt, Aron H Lichtman
Although opioids are highly efficacious analgesics, their abuse potential and other untoward side effects diminish their therapeutic utility. The addition of non-opioid analgesics offers a promising strategy to reduce required antinociceptive opioid doses that concomitantly reduce opioid-related side effects. Inhibitors of the primary endocannabinoid catabolic enzymes fatty acid amide hydrolase (FAAH) and monoacylglycerol lipase (MAGL) show opioid-sparing effects in preclinical models of pain. As simultaneous inhibition of these enzymes elicits enhanced antinociceptive effects compared with single enzyme inhibition, the present study tested whether the dual FAAH-MAGL inhibitor SA-57 [4-[2-(4-chlorophenyl)ethyl]-1-piperidinecarboxylic acid 2-(methylamino)-2-oxoethyl ester] produces morphine-sparing antinociceptive effects, without major side effects associated with either drug class...
November 24, 2016: Neuropharmacology
https://www.readbyqxmd.com/read/27873236/association-of-performance-status-and-pain-in-metastatic-bone-pain-management-in-the-spanish-clinical-setting
#8
Manuel Dómine Gómez, Nieves Díaz Fernández, Blanca Cantos Sánchez de Ibargüen, Luis Zugazabeitia Olabarría, Joaquina Martínez Lozano, Raúl Poza de Celis, Rafael Trujillo Vílchez, Ignacio Peláez Fernández, Jaume Capdevila Castillón, Susana Traseira Lugilde, Emilio Esteban González
INTRODUCTION: Bone metastasis is the most common cause of cancer-related pain, and metastatic bone pain (MBP) is not only severe but also progressive in many patients. The aim of this study was to investigate the association between pain management and performance status in patients with metastatic bone cancer in the Spanish clinical setting. METHODS: A 3-month follow-up prospective, epidemiologic, multicenter study was conducted in 579 patients to assess the evolution of their performance, the impact of pain control on sleep and functionality, and the degree of pain control according to analgesic treatment...
November 21, 2016: Advances in Therapy
https://www.readbyqxmd.com/read/27870657/health-care-utilization-and-cost-in-children-and-adolescents-with-chronic-pain-analysis-of-health-care-claims-data-one-year-before-and-after-intensive-interdisciplinary-pain-treatment
#9
Ann-Kristin Ruhe, Michael Frosch, Julia Wager, Roland Linder, Ingo Pfenning, Dirk Sauerland, Boris Zernikow
OBJECTIVES: The aim of this study was to analyze changes in health care utilization and cost among a sample of highly impaired children and adolescents who sought a three-week intensive interdisciplinary pain treatment (IIPT). MATERIALS AND METHODS: Claims data from seven statutory health insurance companies were analyzed for 65 children and adolescents who sought IIPT at the German Paediatric Pain Centre. The annual health care utilization and cost were determined for the following four areas: outpatient care, inpatient care, medications, and remedies and aids...
November 18, 2016: Clinical Journal of Pain
https://www.readbyqxmd.com/read/27867511/is-tapentadol-different-from-classical-opioids-a-review-of-the-evidence
#10
Richard M Langford, Roger Knaggs, Paul Farquhar-Smith, Anthony H Dickenson
Tapentadol is a single molecule able to deliver analgesia by two distinct mechanisms, a feature which differentiates it from many other analgesics. Pre-clinical data demonstrate two mechanisms of action: mu-opioid receptor agonist activity and noradrenaline re-uptake inhibition. From these, one may predict that tapentadol would be applicable across a broad spectrum of pain from nociceptive to neuropathic. The evidence in animal models suggests that norepinephrine re-uptake inhibition (NRI) is a key mechanism and may even predominate over opioid actions in chronic (and especially neuropathic) pain states, reinforcing that tapentadol is different to classical opioids and may, therefore, be an a priori choice for the treatment of neuropathic and mixed pain...
November 2016: British Journal of Pain
https://www.readbyqxmd.com/read/27867330/use-of-caudal-analgesia-supplemented-with-low-dose-of-morphine-in-children-who-undergo-renal-surgery
#11
Boris Chertin, Alexander Zeldin, Stanislav Kocherov, Alexander Ioscovich, Israel A Ostrovsky, Yaacov Gozal
INTRODUCTION: To test the efficacy and safety of caudal anesthesia (CA) supplemented by low dose morphine in children who undergo renal surgery. MATERIALS AND METHODS: Forty patients aged 2 months-14 years were enrolled and randomly divided into two groups of 20 patients each: Group A (bupivacaine 0.2% with fentanyl); Group B (bupivacaine with morphine). The duration of surgery and hospitalization time were recorded. Postoperative pain score was measured by Face Legs Activity Cry Consolability scale and Wong-Baker Faces scale for those who are older...
October 2016: Current Urology
https://www.readbyqxmd.com/read/27835931/sufentanil-sublingual-formulation-for-the-treatment-of-acute-moderate-to-severe-postoperative-pain-in-adult-patients
#12
Susanna Porela-Tiihonen, Merja Kokki, Hannu Kokki
Sufentanil is a highly selective µ-opioid agonist commonly used by intravenous and intrathecal routes for acute pain. Sublingual sufentanil formulation for patient controlled analgesia (PCA) uses an innovative administration device that suspends a 15 µg nanotablet with a fixed lockout interval. The system is a non-invasive, less burdensome method of opioid delivery compared to intravenous and intrathecal routes. Sublingual nanotablet PCA transmucosal bioavailability is 59% and the meaningful analgesic onset time is 60 minutes...
November 21, 2016: Expert Review of Neurotherapeutics
https://www.readbyqxmd.com/read/27826454/pregabalin-prescription-for-terminally-ill-cancer-patients-receiving-specialist-palliative-care-in-an-acute-hospital
#13
Ryo Yajima, Kazuaki Matsumoto, Yuya Ise, Norihito Suzuki, Yuta Yokoyama, Junko Kizu, Shiro Katayama
BACKGROUND: Pregabalin is recommended as an adjuvant analgesic for neuropathic cancer-related pain, and may be taken at all steps of the World Health Organization analgesic ladder. However, unlike opioids, pregabalin treatments are limited to an oral administration route. If patients have oral feeding difficulties, it is not possible to administer any drug as an adjuvant analgesic for neuropathic cancer-related pain. Therefore, the aim of the present study was to clarify the problems of pain control after pregabalin discontinuation in terminally ill cancer patients...
2016: Journal of Pharmaceutical Health Care and Sciences
https://www.readbyqxmd.com/read/27807964/analgesia-nociception-monitoring-for-opioid-guidance-meta-analysis-of-randomized-clinical-trials
#14
Matthias Gruenewald, Astrid Dempfle
BACKGROUND: The adequate suppression of nociception is, besides induction of unconsciousness and immobility, the main objective during anaesthesia. Analgesics, most commonly opioids, are usually titrated by established clinical surrogates of nociception. Recently, monitoring techniques became available to evaluate analgesia/nociception during anaesthesia and provide better measures then clinical evaluation alone. They are primarily derived from autonomic response on physiologic standard measures...
November 3, 2016: Minerva Anestesiologica
https://www.readbyqxmd.com/read/27807736/-analgesic-drugs-during-pregnancy
#15
S Hultzsch, C Schaefer
Some important limitations must be taken into consideration for analgesic therapy during pregnancy. Paracetamol is the agent of choice for mild to moderate pain in any stage of pregnancy. Ibuprofen is the non-steroidal anti-inflammatory drug (NSAID) of choice; however, these substances are contraindicated after 28 weeks of gestation due to the increasing risk of premature closure of the ductus arteriosus and impairment of fetal kidney function. Even opioids can be used for severe pain but peripartum administration can lead to neonatal respiratory depression and adaptation disorders and long-term therapy up to the end of pregnancy can lead to neonatal withdrawal symptoms...
November 2, 2016: Der Schmerz
https://www.readbyqxmd.com/read/27804884/opioids-resistance-in-chronic-pain-management
#16
Luigi Antonio Morrone, Damiana Scuteri, Laura Rombolà, Hirokazu Mizoguchi, Giacinto Bagetta
Chronic pain management represents a serious healthcare problem worldwide. Chronic pain affects approximately 20% of the adult European population and is more frequent in women and older people. Unfortunately, its management in the community remains generally unsatisfactory and rarely under the control of currently available analgesics. Opioids have been used as analgesics for a long history and are among the most used drugs; however, while there is no debate over their short term use for pain management, limited evidence supports their efficacy of long-term treatment for chronic non-cancer pain...
October 31, 2016: Current Neuropharmacology
https://www.readbyqxmd.com/read/27798836/structure-based-optimization-of-multifunctional-agonists-for-opioid-and-neuropeptide-ff-receptors-with-potent-non-tolerance-forming-analgesic-activities
#17
Zi-Long Wang, Jia-Xin Pan, Jing-Jing Song, Hong-Hai Tang, Hong-Ping Yu, Xu-Hui Li, Ning Li, Ting Zhang, Run Zhang, Meng-Na Zhang, Biao Xu, Quan Fang, Rui Wang
The opioid and neuropeptide FF pharmacophore-containing chimeric peptide 0 (BN-9) was recently developed and produced potent non-tolerance forming analgesia. In this study, eleven analogs of 0 were designed and synthesized. An in vitro cAMP assay demonstrated that these analogs behaved as multifunctional agonists at both opioid and NPFF receptors. In mouse tail-flick test, most of the analogs produced potent non-tolerance forming antinociception. Notably, 11 (DN-9) was 33-fold more potent than 0 at analgesic effects, which was mediated by μ- and κ-opioid receptors...
October 31, 2016: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/27798553/misuse-of-opioids-in-orthopaedic-post-operative-patients
#18
Gangavalli Anup, Malige Ajith, Terres George, Rehman Saqib, Nwachuku Chinenye
OBJECTIVE: In light of the recent uptrend in the prescription of opioids, this study seeks to identify patterns of opioid misuse among orthopaedic post-operative patients and principal external sources in obtaining these medications. DESIGN: Ten-month survey based study. SETTING: Two Level-I trauma centers (urban and suburban). PATIENTS/PARTICIPANTS: 207 patients between the ages of 18 to 89 years who underwent surgical fixation of fractures involving the pelvis, long bones or peri-articular regions of the knee, ankle, elbow and wrist...
October 26, 2016: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/27781944/multitarget-opioid-non-opioid-ligands-in-pain-treatment-new-players-in-an-old-game-ii
#19
Rita Turnaturi, Giuseppina Aricò, Giuseppe Ronsisvalle, Lorella Pasquinucci, Carmela Parenti
Polypharmacology, or the associations between two or more drugs producing biological effects on two or more different sites of action could represent a possible therapeutic approach for the clinical management of acute and chronic pain. The multitude and complexity of neuronal mechanisms that contribute to pain transmission provide several possible targets for pharmacological intervention. Thus, multitarget ligands possessing opioid-opioid or non-opioid-opioid mechanisms of action are potential drug candidates for pain relief...
October 24, 2016: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/27780901/fentanyl-and-methadone-used-as-adjuncts-to-bupivacaine-for-lumbosacral-epidural-analgesia-in-sheep
#20
R DeRossi, R C Pagliosa, A Q de Carvalho, G G Macedo, L C Hermeto
Six healthy, female, mixed-breed 18-24-month-old sheep weighing 30-48 kg were submitted to lumbosacral epidural bupivacaine in combination with either methadone or fentanyl. Epidural catheters were placed in six sheep that were given three treatments: (Bup) bupivacaine (0.5 mg/kg) alone; (BupMet) bupivacaine (0.25 mg/kg) plus methadone (0.3 mg/kg); and (BupFent) bupivacaine (0.25 mg/kg) plus fentanyl (0.002 mg/kg). Haemodynamic variables, respiratory rate, rectal temperature, analgesia by applying a standard painful stimulus, motor block and sedative scores were compared among the three treatments...
October 25, 2016: Veterinary Record
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