keyword
MENU ▼
Read by QxMD icon Read
search

Opioid tolerance

keyword
https://www.readbyqxmd.com/read/28635354/the-effects-of-food-on-opioid-induced-nausea-and-vomiting-and-pharmacological-parameters-a-systematic-review
#1
Robert B Raffa, Robert Colucci, Joseph V Pergolizzi
Opioids remain the standard of care for treating moderate to severe pain resulting from surgery or injury in cases of acute pain, and are recommended for patients who have not responded to nonopioid analgesics. Effective management of pain has an impact on clinical course and often depends on achieving an acceptable balance between opioid efficacy, safety, and tolerability. Common opioid-related adverse events such as nausea and vomiting are associated with an overall lower achievement of effective pain management and patient satisfaction...
June 21, 2017: Postgraduate Medicine
https://www.readbyqxmd.com/read/28626808/attenuation-of-opioid-tolerance-by-etb-receptor-agonist-irl-1620-is-independent-of-an-accompanied-decrease-in-nerve-growth-factor-in-mice
#2
Shruti Gulati, Seema Briyal, Shantel Jones, Shaifali Bhalla, Anil Gulati
AIM: ETA receptor antagonists reverse opioid tolerance but the involvement of ETB receptors is unknown. In morphine or oxycodone tolerant mice we investigated (1) the effect of ETB receptor agonist, IRL-1620, on analgesic tolerance; (2) changes in expression of the brain ETA and ETB receptors; and (3) alterations in the brain VEGF, NGF, PI3K and notch-1 expression. MAIN METHODS: Body weight, body temperature, and tail-flick latency were assessed before and after a challenge dose of morphine or oxycodone in vehicle or IRL-1620 treated mice...
June 2017: Heliyon
https://www.readbyqxmd.com/read/28616844/therapeutic-utility-of-opioids-for-restless-legs-syndrome
#3
REVIEW
Susan E Mackie, John W Winkelman
Restless legs syndrome (RLS) is a sensorimotor neurologic disorder characterized by an unpleasant urge to move the legs, often accompanied by leg dysesthesias. Symptoms predominate in the evening or at night and often cause significant distress and disruption of sleep. Several non-opioid classes of drugs provide initial relief from the symptoms of RLS. Among these, however, the efficacy of dopamine agonists can wane over time or even paradoxically 'augment' the severity of symptoms during the course of long-term treatment...
June 14, 2017: Drugs
https://www.readbyqxmd.com/read/28616391/opioid-free-anaesthesia-in-three-dogs
#4
Donna M White, Alastair R Mair, Fernando Martinez-Taboada
Opioid-free anaesthesia (OFA) is a relatively new and growing field in human medicine. There are multiple motivations behind this emerging practice with the recognition of several serious potential opioid-related adverse effects including opioid induced hyperalgesia, opioid tolerance and immunomodulatory effects of opioids. Opioids have long been the mainstay of veterinary anaesthesia and pain management practice. The feasibility of OFA in veterinary patients is presented here. A case series of three dogs that underwent OFA for canine ovariohysterectomy is reported...
2017: Open veterinary journal
https://www.readbyqxmd.com/read/28606851/cardiorespiratory-action-of-opioid-tachykinin-agonist-peptide-hybrid-in-anaesthetized-rats-transduction-pathways
#5
Piotr Wojciechowski, Małgorzata Szereda-Przestaszewska, Andrzej Wojciech Lipkowski
AWL3106 composed of opioid (dermorphin) and tachykinin (substance P7-11) pharmacophores is a new compound with high analgesic potency and markedly reduced ability to induce tolerance and dependence. The present study aimed to determine the respiratory and cardiovascular responses evoked by this peptide in urethane-chloralose anaesthetized, spontaneously breathing rats in the presence or absence of vagal connection. Intravenous injection of AWL3106 at a dose of 0.3μmol/kg in intact rats resulted in apnoea lasting 5...
June 9, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28603428/upregulation-of-mir-375-level-ameliorates-morphine-analgesic-tolerance-in-mouse-dorsal-root-ganglia-by-inhibiting-the-jak2-stat3-pathway
#6
Haiqin Li, Rong Tao, Jing Wang, Lingjie Xia
Several lines of evidence indicate that microRNAs (miRNAs) modulate tolerance to the analgesic effects of morphine via regulation of pain-related genes, making dysregulation of miRNA levels a clinical target for controlling opioid tolerance. However, the precise mechanisms by which miRNAs regulate opioid tolerance are unclear. In the present study, we noted that the miR-375 level was downregulated but the expression of Janus kinase 2 (JAK2) was upregulated in mouse dorsal root ganglia (DRG) following chronic morphine treatment...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28600725/tolerability-safety-and-effectiveness-of-oxycodone-deterx-in-elderly-patients-%C3%A2-65%C3%A2-years-of-age-with-chronic-low-back-pain-a-randomized-controlled-trial
#7
Ernest A Kopecky, Ben Vaughn, Scott Lagasse, Melinda O'Connor
TRIAL DESIGN: This was a phase III, randomized withdrawal, double-blind, placebo-controlled, enriched enrollment, parallel-group, multicenter study intended to demonstrate the safety, tolerability, and analgesic efficacy of oxycodone DETERx(®) (Xtampza™ ER) compared with matching placebo. METHODS: This post hoc analysis was performed using data from a subpopulation of enrolled patients who were ≥65 years of age. The study enrolled male and female patients with a clinical diagnosis of moderate-to-severe chronic low back pain for a minimum of 6 months prior to screening who required around-the-clock opioid therapy...
June 10, 2017: Drugs & Aging
https://www.readbyqxmd.com/read/28599683/pain-sensitivity-and-analgesic-use-among-10-486-adults-the-troms%C3%A3-study
#8
Per-Jostein Samuelsen, Christopher Sivert Nielsen, Tom Wilsgaard, Audun Stubhaug, Kristian Svendsen, Anne Elise Eggen
BACKGROUND: Increased pain sensitivity is a putative risk factor for chronic pain and consequently for analgesic use. Conversely, analgesic use may be a cause of increased pain sensitivity, e.g., through opioid-induced hyperalgesia. We aimed to study the association between pain sensitivity and analgesic use in a general population, and to test the hypothesis that increased baseline pain sensitivity is a risk factor for future persistent analgesic use. METHODS: The Tromsø Study (2007-08), a population-based health study, was linked with eight years of prescription data from the Norwegian Prescription Database...
June 9, 2017: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28590258/opioid-induced-hyperalgesia-in-clinical-anesthesia-practice-what-has-remained-from-theoretical-concepts-and-experimental-studies
#9
Lena Weber, David C Yeomans, Alexander Tzabazis
PURPOSE OF REVIEW: This article reviews the phenomenon of opioid-induced hyperalgesia (OIH) and its implications for clinical anesthesia. The goal of this review is to give an update on perioperative prevention and treatment strategies, based on findings in preclinical and clinical research. RECENT FINDINGS: Several systems have been suggested to be involved in the pathophysiology of OIH with a focus on the glutaminergic system. Very recently preclinical data revealed that peripheral μ-opioid receptors (MORs) are key players in the development of OIH and acute opioid tolerance (AOT)...
June 5, 2017: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/28589556/characterization-of-functional-%C3%AE-opioid-receptor-turnover-in-rat-locus-coeruleus-an-electrophysiological-and-immunocytochemical-study
#10
María Carmen Medrano, María Teresa Santamarta, Patricia Pablos, Zigor Aira, Itsaso Buesa, Jon Jatsu Azkue, Aitziber Mendiguren, Joseba Pineda
BACKGROUND AND PURPOSE: Regulation of μ receptor (MOR) dynamics such as MOR trafficking is a possible mechanism underlying opioid tolerance that contributes to inefficient recycling of opioid responses. We aimed to characterize the functional MOR turnover in the noradrenergic nucleus locus coeruleus (LC). EXPERIMENTAL APPROACH: We measured opioid effect by single-unit extracellular recordings of LC neurons from rat brain slices. Immunocytochemical techniques were also used to evaluate MOR trafficking...
June 7, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28582659/increased-use-of-heroin-as-an-initiating-opioid-of-abuse
#11
Theodore J Cicero, Matthew S Ellis, Zachary A Kasper
INTRODUCTION: Given the relatively recent growth in access to heroin and a more permissive atmosphere surrounding its use, we hypothesized that an increasing number of persons with limited experience and tolerance to opioids would experiment with heroin as their first opioid rather than more common prescription opioid analgesics. METHODS: Individuals entering substance abuse treatment for an opioid use disorder in the period 2010-2016 (N=5885) were asked about the specific opioid they first regularly used to get high...
May 23, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/28580486/the-role-of-endogenous-opioid-system-in-the-regulation-of-heart-tolerance-to-stress-induced-damage
#12
Yu B Lishmanov, S Yu Tsibul'nikov, N V Naryzhnaya, M V Korobov, L N Maslov
In Wistar rats, stress was modeled by 24-h immobilization in a supine posture and stress-induced damage to the heart was assessed by accumulation of (99m)Tc-pyrophosphate in the myocardium. The intensity of stress reaction was measured by serum levels of cortisol and insulin. Both stressinduced damage to the heart and intensity of stress reaction were examined under control conditions and in rats treated with opioid receptor antagonists naltrexone, methylnaltrexone bromide, MR2266, and ICI174.864. Activation of central μ-opioid receptors with endogenous opioids aggravated stress-induced cardiomyopathy, while stimulation of peripheral μ-opioid receptors produced a cardioprotective effect...
June 3, 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28577506/high-enhancer-downer-withdrawal-helper-multifunctional-nonmedical-benzodiazepine-use-among-young-adult-opioid-users-in-new-york-city
#13
Pedro Mateu-Gelabert, Lauren Jessell, Elizabeth Goodbody, Dongah Kim, Krista Gile, Jennifer Teubl, Cassandra Syckes, Kelly Ruggles, Jeffrey Lazar, Sam Friedman, Honoria Guarino
BACKGROUND: Benzodiazepines are a widely prescribed psychoactive drug; in the U.S., both medical and nonmedical use of benzodiazepines has increased markedly in the past 15 years. Long-term use can lead to tolerance and dependence, and abrupt withdrawal can cause seizures or other life-threatening symptoms. Benzodiazepines are often used nonmedically in conjunction with other drugs, and with opioids in particular-a combination that can increase the risk for fatal and non-fatal overdose...
May 31, 2017: International Journal on Drug Policy
https://www.readbyqxmd.com/read/28576452/naldemedine-versus-placebo-for-opioid-induced-constipation-compose-1-and-compose-2-two-multicentre-phase-3-double-blind-randomised-parallel-group-trials
#14
Martin Hale, James Wild, Jyotsna Reddy, Tadaaki Yamada, Juan Camilo Arjona Ferreira
BACKGROUND: Opioid-induced constipation is a frequent side-effect of opioid treatment, and standard interventions have limited or inconsistent efficacy. This study assessed the efficacy and safety of naldemedine, a peripherally acting μ-opioid receptor antagonist, for the treatment of opioid-induced constipation in patients with chronic non-cancer pain. METHODS: We report two double-blind, randomised, placebo-controlled trials in adults with chronic non-cancer pain and opioid-induced constipation...
May 30, 2017: Lancet. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28554599/pharmacokinetics-and-pharmacodynamics-of-a-buprenorphine-subcutaneous-depot-formulation-cam2038-for-once-weekly-dosing-in-patients-with-opioid-use-disorder
#15
Christian Haasen, Margareta Linden, Fredrik Tiberg
INTRODUCTION: Sublingual buprenorphine is effective for opioid dependence treatment but associated with misuse, abuse, and diversion. The present Phase I/II study evaluated a novel buprenorphine subcutaneous depot formulation for once-weekly dosing (CAM2038 q1w) in patients receiving maintenance treatment for opioid use disorder with daily sublingual buprenorphine. METHODS: After discontinuation of buprenorphine for 48h, patients received a single CAM2038 q1w dose based on their pre-study daily sublingual maintenance dose...
July 2017: Journal of Substance Abuse Treatment
https://www.readbyqxmd.com/read/28552056/the-orexinergic-hypocretin-system-and-nociception-an-update-to-supraspinal-mechanisms
#16
Ali Roohbakhsh, Mohaddeseh Sadat Alavi, Hassan Azhdari Zarmehri
Chronic pain is a multifaceted and complex condition that is divided into somatic, visceral, and neuropathic pain. Although opioids and nonsteroidal anti-inflammatory drugs cause analgesia and are effective in the treatment of chronic pain, their utility is hampered by side effects, abuse potential, and development of tolerance to their pain-relieving effects. So, finding alternative analgesics with good efficacy and low side effects is of great interest and the orexinergic system is a potential candidate. Orexin-A and -B are exclusively expressed in the lateral hypothalamus and are involved in the feeding, sleep/wake cycle, cardiovascular function, hormone secretion, seizure, and pain modulation...
May 28, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28551416/validation-of-a-thermal-threshold-nociceptive-model-in-bearded-dragons-pogona-vitticeps
#17
Émilie L Couture, Beatriz P Monteiro, Jessica Aymen, Eric Troncy, Paulo V Steagall
OBJECTIVES: To validate a thermal threshold (TT) nociceptive model in bearded dragons (Pogona vitticeps) and to document TT changes after administration of morphine. STUDY DESIGN: A two-part randomized, blinded, controlled, experimental study. ANIMALS: Five adult bearded dragons (242-396 g). METHODS: A TT device delivered a ramped nociceptive stimulus (0.6 °C second(-1)) to the medial thigh until a response (leg kick/escape behavior) was observed or maximum (cut-off) temperature of 62 °C was reached...
January 11, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28548207/pharmacometric-modeling-of-naloxegol-efficacy-and-safety-impact-on-dose-and-label
#18
N Al-Huniti, D Zhou, H Xu, S Aksenov, K H Bui, R Fox, G Helmlinger, D Stanski
Naloxegol is a peripherally acting μ-opioid receptor antagonist that was developed for the treatment of opioid-induced constipation. Modeling and simulation of naloxegol efficacy and tolerability informed selection of doses for phase III studies and provided comprehensive dosage recommendations for the naloxegol US package insert.
May 26, 2017: Clinical Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28535569/reinstituting-the-bolus-new-reasoning-for-an-existing-technique
#19
Porter W McRoberts, Jason E Pope, Catalina Apostol
Improved intrathecal (IT) pump technology is increasing the accuracy of IT opioid bolus dosing and promising advances in pain therapy. Opioid bolus dosing can be used with a minimal continuous infusion or it can function as the sole therapy. Bolus-only dosing is characterized by minimal use of opioid (often less than 1 mg of IT morphine). It achieves adequate pain control while reducing tolerance and possibly opioid-induced hyperalgesia. It may prevent receptor saturation, and provide a "washing out" of the opioid receptor that prevents the observed dose escalation resulting from continuous infusions...
May 2017: Pain Physician
https://www.readbyqxmd.com/read/28533287/trv0109101-a-g-protein-biased-agonist-of-the-%C3%A2%C2%B5-opioid-receptor-does-not-promote-opioid-induced-mechanical-allodynia-following-chronic-administration
#20
Michael Koblish, Richard Carr, Edward R Siuda, David H Rominger, William Gowen-MacDonald, Conrad L Cowan, Aimee L Crombie, Jonathan D Violin, Michael W Lark
Prescription opioids are a mainstay in the treatment of acute moderate to severe pain. However, chronic use leads to a host of adverse consequences including tolerance and opioid-induced hyperalgesia (OIH), leading to more complex treatment regimens and diminished patient compliance. Patients experiencing OIH paradoxically experience exaggerated nociceptive responses instead of pain reduction after chronic opioid usage. The development of OIH and tolerance tend to occur simultaneously and, thus, present a challenge when studying the molecular mechanisms driving each phenomenon...
May 22, 2017: Journal of Pharmacology and Experimental Therapeutics
keyword
keyword
11395
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"