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https://www.readbyqxmd.com/read/27932682/preliminary-assessment-of-midazolam-fentanyl-and-fluanisone-combination-for-the-sedation-of-rhesus-macaques-macaca-mulatta
#1
Henri G M J Bertrand, Charlotte F Sandersen, Paul A Flecknell
This study was undertaken to assess the suitability of fentanyl/fluanisone ('Hypnorm', VetaPharma; 0.315 mg/mL of fentanyl citrate and 10 mg/mL of fluanisone) alone or combined with midazolam in rhesus macaques. Fifteen rhesus macaques requiring sedation for veterinary procedures received an intramuscular (IM) dose range of Hypnorm from 0.01 mL/kg to 0.3 mL/kg either alone or combined with 0.5 mg/kg of midazolam. To reverse the sedation, flumazenil in combination with either naloxone, buprenorphine or butorphanol was administered intravenously (IV) or IM...
December 8, 2016: Laboratory Animals
https://www.readbyqxmd.com/read/27927089/an-evaluation-of-the-anti-inflammatory-antipyretic-and-analgesic-effects-of-hydroethanol-leaf-extract-of-albizia-zygia-in-animal-models
#2
Wonder Kofi Mensah Abotsi, Stanley Benjamin Lamptey, Stephen Afrane, Eric Boakye-Gyasi, Ruth Uwa Umoh, Eric Woode
CONTEXT: The leaves of Albizia zygia (DC.) J.F. Macbr. (Leguminosae-Mimosoideae) are used in Ghanaian traditional medicine for the treatment of pain, inflammatory disorders and fever (including malaria). OBJECTIVES: The present study evaluated the anti-inflammatory, antipyretic and analgesic effects of the hydroethanol leaf extract of Albizia zygia (AZE) in animal models. MATERIALS AND METHODS: The anti-inflammatory and antipyretic effects of AZE were examined in the carrageenan-induced foot oedema model and the baker's yeast-induced pyrexia test respectively...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/27925864/intravenous-use-of-intranasal-naloxone-a-case-of-overdose-reversal
#3
Smita Das, Nina Shah, Murtuza Ghadiali
BACKGROUND: Opioid overdose is a growing concern in the United States and internationally. Prehospital or pre-medical-personnel (lay person) administration of naloxone, an opioid antagonist, to reverse overdose, is an expanding mode of harm reduction. Recently, community clinics, methadone clinics, needle exchanges, some pharmacies and other health care facilities have made naloxone available to the community. CASE: This case describes heroin overdose reversal of a 28-year-old male who had been using about a gram of heroin intravenously for 3 years, but recently reduced frequency of use in an attempt to stop...
December 7, 2016: Substance Abuse
https://www.readbyqxmd.com/read/27923161/antinociceptive-tolerance-to-nsaids-in-the-rat-formalin-test-is-mediated-by-the-opioid-mechanism
#4
Nana Tsiklauri, Ivliane Nozadze, Gulnaz Gurtskaia, Merab G Tsagareli
BACKGROUND: In the past decade it has been shown that tolerance develops to the antinociceptive effect of repeated systemic administration of commonly used non-steroidal anti-inflammatory drugs (NSAIDs) in acute pain models using rats. This is similar to the tolerance observed with opioid-induced analgesia. In the present study, we investigated the development of tolerance to the analgesic effects of NSAIDs diclofenac, ketorolac and xefocam in a chronic inflammatory pain model, the formalin test...
October 6, 2016: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/27922595/memories-of-opiate-withdrawal-emotional-states-correlate-with-specific-gamma-oscillations-in-the-nucleus-accumbens
#5
Cyril Dejean, Mathieu Sitko, Paul Girardeau, Amine Bennabi, Stéphanie Caillé, Martine Cador, Thomas Boraud, Catherine Le Moine
Affective memories associated with the negative emotional state experienced during opiate withdrawal are central in maintaining drug-taking, seeking and relapse. Nucleus accumbens (NAC) is a key structure both for acute withdrawal and withdrawal memories reactivation, however NAC neuron coding properties underpinning the expression of these memories remain largely unknown. Here we aimed at deciphering the role of NAC neurons in the encoding and retrieval of opiate withdrawal memory. Chronic single neuron and local field potentials recordings were performed in morphine-dependent rats and placebo-controls...
December 6, 2016: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27921252/opioid-induced-bowel-dysfunction-in-patients-undergoing-spine-surgery-comparison-of-oxycodone-and-oxycodone-naloxone-treatment
#6
Merja Kokki, Moona Kuronen, Toivo Naaranlahti, Timo Nyyssönen, Ira Pikkarainen, Sakari Savolainen, Hannu Kokki
INTRODUCTION: Opioids are needed for postoperative pain in spine surgery patients, but opioid-induced constipation is a harmful adverse event. The aim of this clinical trial was to compare the use of a controlled-release oxycodone-naloxone combination product with oxycodone controlled-release tablets in these patients. The main outcome measure was the prevalence of constipation at 7 days postoperatively assessed with a Bowel Function Index questionnaire. A follow-up assessment at 21 days after surgery was also included...
December 5, 2016: Advances in Therapy
https://www.readbyqxmd.com/read/27919589/preincisional-and-postoperative-epidural-morphine-ropivacaine-ketamine-and-naloxone-treatment-for-postoperative-pain-management-in-upper-abdominal-surgery
#7
Hou-Chuan Lai, Chung-Bao Hsieh, Chih-Shung Wong, Chun-Chang Yeh, Zhi-Fu Wu
OBJECTIVE(S): Previous studies have shown that preincisional epidural morphine, bupivacaine, and ketamine combined with epidural anesthesia (EA) and general anesthesia (GA) provided pre-emptive analgesia for upper abdominal surgery. Recent studies reported that ultralow-dose naloxone enhanced the antinociceptive effect of morphine in rats. This study investigated the benefits of preincisional and postoperative epidural morphine + ropivacaine + ketamine + naloxone (M + R + K + N) treatment for achieving postoperative pain relief in upper abdominal surgery...
December 2, 2016: Acta Anaesthesiologica Taiwanica: Official Journal of the Taiwan Society of Anesthesiologists
https://www.readbyqxmd.com/read/27919002/inhibitory-effect-of-fentanyl-citrate-on-the-release-of-endothlin-1-induced-by-bradykinin-in-melanoma-cells
#8
Tsugunobu Andoh, Akira Shinohara, Yasushi Kuraishi
BACKGROUND: Our previous study showed that the μ-opioid receptor agonist fentanyl citrate inhibits endothelin-1-and bradykinin-mediated pain responses in mice orthotopically inoculated with melanoma cells. We also demonstrated that bradykinin induces endothelin-1 secretion in melanoma cells. However, the analgesic mechanisms of fentanyl citrate remain unclear. Thus, the present study was conducted to determine whether fentanyl citrate affects bradykinin-induced endothelin-1 secretion in B16-BL6 melanoma cells...
October 6, 2016: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/27916366/rubus-occidentalis-analgesic-effect-in-a-rat-model-of-incisional-pain
#9
Geun Joo Choi, Hyun Kang, Won Joong Kim, Ji Wung Kwon, Beom Gyu Kim, Yoo Shin Choi, Young Joo Cha, Jin Soo Ko
BACKGROUND: The purpose of this study was to evaluate the analgesic effect of Rubus occidentalis extract (ROE) in a rat model of incisional pain. The involved mechanisms and proinflammatory cytokine response were also examined. MATERIALS AND METHODS: To investigate the analgesic effect, rats were intraperitoneally administered with normal saline or various doses of ROE before or after a plantar incision. To evaluate the involved mechanism, rats were intraperitoneally administered yohimbine, dexmedetomidine, prazosin, naloxone, atropine, or mecamylamine after a plantar incision; ROE was then administered intraperitoneally...
November 2016: Journal of Surgical Research
https://www.readbyqxmd.com/read/27910870/antinociceptive-profile-of-levo-tetrahydropalmatine-in-acute-and-chronic-pain-mice-models-role-of-spinal-sigma-1-receptor
#10
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/27903034/prescription-drug-abuse-a-timely-update
#11
Benny Monheit, Danusia Pietrzak, Sandra Hocking
BACKGROUND: Prescription drug abuse is a rising problem in Australia and pharmaceutical drugs have been the most frequent contributors to overdose deaths in Victoria in recent years. OBJECTIVE: The objectives of this article are to examine the main prescription drugs contributing to overdose deaths and to consider how doctors may help in reducing this problem. DISCUSSION: Data from the Coroners Court of Victoria list the main drugs that contributed to drug-related deaths in 2009-15...
December 2016: Australian Family Physician
https://www.readbyqxmd.com/read/27902584/effect-of-naloxone-on-intravenous-fentanyl-patient-controlled-analgesia-after-laparoscopic-cholecystectomy
#12
Jun Zheng, Wen Han, Xiao-Dong Han, Xiao-Yuan Ma, Pengbo Zhang
This study aims to evaluate the effect of naloxone on intravenous fentanyl patient-controlled analgesia after laparoscopic cholecystectomy under total intravenous anesthesia.A total of 90 patients, who underwent intravenous fentanyl patient-controlled analgesia after laparoscopic cholecystectomy under total intravenous anesthesia, were included into this study. All patients were randomly divided into 3 groups (each group, n=30): naloxone group (naloxone+fentanyl), tropisetron group (tropisetron+fentanyl), and fentanyl group (fentanyl)...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27899885/interacting-cannabinoid-and-opioid-receptors-in-the-nucleus-accumbens-core-control-adolescent-social-play
#13
Antonia Manduca, Olivier Lassalle, Marja Sepers, Patrizia Campolongo, Vincenzo Cuomo, Giovanni Marsicano, Brigitte Kieffer, Louk J M J Vanderschuren, Viviana Trezza, Olivier J J Manzoni
Social play behavior is a highly rewarding, developmentally important form of social interaction in young mammals. However, its neurobiological underpinnings remain incompletely understood. Previous work has suggested that opioid and endocannabinoid neurotransmission interact in the modulation of social play. Therefore, we combined behavioral, pharmacological, electrophysiological, and genetic approaches to elucidate the role of the endocannabinoid 2-arachidonoylglycerol (2-AG) in social play, and how cannabinoid and opioid neurotransmission interact to control social behavior in adolescent rodents...
2016: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/27899097/antinociception-of-petroleum-ether-fraction-derived-from-crude-methanol-extract-of-melastoma-malabathricum-leaves-and-its-possible-mechanisms-of-action-in-animal-models
#14
Z A Zakaria, E S Jaios, M H Omar, S Abd Rahman, S S A Hamid, S M Ching, L K Teh, M Z Salleh, S Deny, M Taher
BACKGROUND: Melastoma malabathricum L. (family Melastomaceae) has been traditionally used as remedies against various ailments including those related to pain. The methanol extract of M. malabathricum leaves has been proven to show antinociceptive activity. Thus, the present study aimed to determine the most effective fraction among the petroleum ether- (PEMM), ethyl acetate- (EAMM) and aqueous- (AQMM) fractions obtained through successive fractionation of crude, dried methanol extract of M...
November 29, 2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27898496/distinctive-trajectories-of-opioid-use-over-an-extended-follow-up-of-patients-in-a-multisite-trial-on-buprenorphine%C3%A2-%C3%A2-naloxone-and-methadone
#15
Yih-Ing Hser, David Huang, Andrew J Saxon, George Woody, Andrew L Moskowitz, Abigail G Matthews, Walter Ling
OBJECTIVES: Uncovering heterogeneities in longitudinal patterns (trajectories) of opioid use among individuals with opioid use disorder can increase our understanding of disease progression and treatment responses to improve care. The present study aims to identify distinctive opioid use trajectories and factors associated with these patterns among participants randomized to treatment with methadone (MET) or buprenorphine + naloxone (BUP). METHODS: Growth mixture modeling was applied to identify distinctive opioid use trajectories among 795 opioid users after their enrollment in a multisite trial during 2006 to 2009, with follow-up interviews conducted during 2011 to 2014...
November 24, 2016: Journal of Addiction Medicine
https://www.readbyqxmd.com/read/27898491/psychosocial-factors-predict-opioid-analgesia-via-endogenous-opioid-function
#16
John W Burns, Stephen Bruehl, Christopher R France, Erik Schuster, Daria Orlowska, Asokumar Buvanendran, Melissa Chont, Rajnish K Gupta
Use of opioid analgesics for management of chronic nonmalignant pain has become common, yet there are presently no well-validated predictors of optimal opioid analgesic efficacy. We examined whether psychosocial factors (e.g. depressive symptoms) predicted changes in spontaneous low back pain following administration of opioid analgesics, and whether endogenous opioid (EO) function mediated these relationships. Participants with chronic low back pain but who were not chronic opioid users (N = 89) underwent assessment of low back pain intensity pre- and post-drug in three (counterbalanced) conditions: 1) placebo, 2) intravenous naloxone, 3) intravenous morphine...
November 18, 2016: Pain
https://www.readbyqxmd.com/read/27896372/opioid-receptor-agonists-may-favorably-affect-bone-mechanical-properties-in-rats-with-estrogen-deficiency-induced-osteoporosis
#17
Aleksandra Janas, Joanna Folwarczna
The results of epidemiological, clinical, and in vivo and in vitro experimental studies on the effect of opioid analgesics on bone are inconsistent. The aim of the present study was to investigate the effect of morphine (an agonist of opioid receptors), buprenorphine (a partial μ opioid receptor agonist and κ opioid receptor antagonist), and naloxone (an antagonist of opioid receptors) on the skeletal system of female rats in vivo. The experiments were carried out on 3-month-old Wistar rats, divided into two groups: nonovariectomized (intact; NOVX) rats and ovariectomized (OVX) rats...
November 28, 2016: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/27896019/naloxone-and-metabolites-quantification-in-cord-blood-of-prenatally-exposed-newborns-and-correlations-with-maternal-concentrations
#18
Samantha L Wiegand, Madeleine J Swortwood, Marilyn A Huestis, John Thorp, Hendreé E Jones, Neeta L Vora
Objective To quantify naloxone and metabolite concentrations in newborns prenatally exposed to sublingual buprenorphine/naloxone and to correlate neonatal and maternal metabolite concentrations. Methods This is a prospective observational cohort study. Eleven pregnant women treated for opioid use disorder with sublingual buprenorphine/naloxone were enrolled. Maternal and newborn blood was collected and analyzed for naloxone, buprenorphine, and metabolites via liquid chromatography tandem mass spectrometry...
October 2016: American Journal of Perinatology Reports
https://www.readbyqxmd.com/read/27895451/non-cardiogenic-pulmonary-edema-rhabdomyolysis-and-myocardial-injury-following-heroin-inhalation-a-case-report
#19
G Bazoukis, A Spiliopoulou, K Mourouzis, P Grigoropoulou, A Yalouris
BACKGROUND: Heroin use by non-injecting routes of administration (snorting, swallowing, "chasing the dragon") is considered to be safer but is not risk-free for fatal overdose or serious side effects. We report the case of an adolescent who was transferred unconscious to the emergency department after heroin inhalation. Description of the case: A 17-year-old male was transferred to the emergency department unconscious (Glasgow coma scale: 6/15) after heroin inhalation. He was treated with non-rebreather mask and intravenous infusion of naloxone with gradual improvement of consciousness and arterial blood gasses...
January 2016: Hippokratia
https://www.readbyqxmd.com/read/27890601/tramadol-effects-on-sexual-behavior-in-male-rats-are-mainly-caused-by-its-5-ht-reuptake-blocking-effects
#20
Jocelien D A Olivier, Diana C Esquivel Franco, Ronald Oosting, Marcel Waldinger, Zoltan Sarnyai, Berend Olivier
Tramadol is a well-known and effective analgesic. Recently it was shown that tramadol is also effective in human premature ejaculation. The inhibitory effect of tramadol on the ejaculation latency is probably due to its mechanism of action as a μ-opioid receptor agonist and noradrenaline/serotonin (5-HT) reuptake inhibitor. In order to test this speculation, we tested several doses of tramadol in a rat model of male sexual behavior and investigated two types of drugs interfering with the μ-opioid and the 5-HT system...
November 24, 2016: Neuropharmacology
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