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https://www.readbyqxmd.com/read/28421874/pharmacokinetics-safety-and-tolerability-of-a-novel-tocopheryl-phosphate-mixture-oxycodone-transdermal-patch-system-a-phase-i-study
#1
Paul D Gavin, Lee S Simon, Thomas Schlagheck, Alisha J Smith, Sepehr Shakib
AIM: To characterize the pharmacokinetic profile and evaluate the safety and tolerability of a transdermal oxycodone patch containing tocopheryl phosphate mixture (TPM). PATIENTS & METHODS: Eleven healthy subjects received a single application of three TPM/oxycodone patches applied to the torso for 72 h. RESULTS: Oxycodone was detected 8.0 ± 2.7-h postpatch administration, reaching a mean maximum plasma concentration of 3.41 ± 1.34 ng/ml at 49...
April 19, 2017: Pain Management
https://www.readbyqxmd.com/read/28415907/transdermal-oxycodone-patch-for-the-treatment-of-postherpetic-neuralgia-a-randomized-double-blind-controlled-trial
#2
Paul D Gavin, Louise Tremper, Alisha Smith, Gemma Williams, Charles Brooker
AIM: To evaluate the efficacy, systemic exposure, safety and tolerability of a transdermal oxycodone patch containing tocopheryl phosphate mixture (TPM) in patients with postherpetic neuralgia (PHN). PATIENTS & METHODS: The study was a Phase IIa, multicenter, randomized, double-blind, vehicle-controlled crossover study. RESULTS: While the TPM/oxycodone patch did not significantly improve 'average' Numeric Pain Rating Scale scores versus vehicle patch, patients reporting high levels of paresthesia (n = 9) showed a trend toward improved pain reduction...
April 18, 2017: Pain Management
https://www.readbyqxmd.com/read/28410920/potential-drug-interaction-with-opioid-agonist-in-the-setting-of-chronic-low-dose-opioid-antagonist-use
#3
James B Leonard, Vidya Nair, Christopher J Diaz, Jonathan B Penoyar, Penelope A Goode
Low dose naltrexone (LDN) has been evaluated in several small studies for the treatment of inflammatory conditions. It is thought to work through modulation of inflammatory mediators and upregulation of endogenous opioid receptors. This may hypersensitize patients to exogenous opioids. Drug-drug interaction screening tools built into electronic health records and other services identify the interaction as risk of opioid withdrawal rather than hypersensitivity. We present a case of a drug-drug interaction in a patient who was receiving LDN treatment of multiple sclerosis...
April 6, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28405945/the-comparative-risk-of-delirium-with-different-opioids-a-systematic-review
#4
REVIEW
Lieke M Swart, Vera van der Zanden, Petra E Spies, Sophia E de Rooij, Barbara C van Munster
OBJECTIVE: There is substantial evidence that the use of opioids increases the risk of adverse outcomes such as delirium, but whether this risk differs between the various opioids remains controversial. In this systematic review, we evaluate and discuss possible differences in the risk of delirium from the use of various types of opioids in older patients. METHODS: We performed a search in MEDLINE by combining search terms on delirium and opioids. A specific search filter for use in geriatric medicine was used...
April 12, 2017: Drugs & Aging
https://www.readbyqxmd.com/read/28401523/injection-of-pharmaceuticals-designed-for-oral-use-harms-experienced-and-effective-harm-reduction-through-filtration
#5
Stuart McLean, Rahul Patel, Raimondo Bruno
Several pharmaceutical products are liable to 'abuse' or use outside their prescription, which frequently involves their injection. Examples are slow-release forms of morphine and oxycodone, and sublingual buprenorphine. During injection preparation, the drug is extracted into water, after crushing and heating the tablet if considered necessary. Since these products are designed for oral administration, they can contain excipients (ingredients other than the drug) which are poorly soluble, resulting in suspension of particles in the injection solution...
April 2, 2017: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/28394703/comparative-analysis-of-opioid-queries-on-erowid-org-an-opportunity-to-advance-harm-reduction
#6
Rachel S Wightman, Jeanmarie Perrone, Fire Erowid, Earth Erowid, Zachary F Meisel, Lewis S Nelson
BACKGROUND: Many individuals who use opioids turn to online resources to gather information on effects, availability, and safety. OBJECTIVE: Describe opioid index page views on Erowid.org to assess trends in public interest in particular opioids. METHODS: Retrospective analysis of Erowid.org site traffic was performed to identify unique average daily visits to opioid pages. All data was normalized to that of visits to the heroin index page...
April 10, 2017: Substance Use & Misuse
https://www.readbyqxmd.com/read/28393896/effects-of-ibudilast-on-the-subjective-reinforcing-and-analgesic-effects-of-oxycodone-in-recently-detoxified-adults-with-opioid-dependence
#7
Verena E Metz, Jermaine D Jones, Jeanne Manubay, Maria Sullivan, Shanthi Mogali, Andrew Segoshi, Gabriela Madera, Kirk W Johnson, Sandra D Comer
Ibudilast, a non-selective phosphodiesterase inhibitor, is used clinically in Asia for the treatment of asthma and post-stroke dizziness. Recent preclinical studies have suggested that it also inhibits glial cell activation in rodents, and may alter opioid-mediated effects, including analgesia and withdrawal symptoms. The effects of ibudilast on the abuse potential of opioids in humans are largely unknown. The present study was designed to examine the influence of ibudilast on subjective (including drug craving), reinforcing, and analgesic effects of oxycodone in human volunteers diagnosed with opioid dependence (equivalent to moderate-severe opioid use disorder)...
April 10, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28392133/patients-at-risk-large-opioid-prescriptions-after-total-knee-arthroplasty
#8
Nicholas M Hernandez, Joshua A Parry, Michael J Taunton
BACKGROUND: Opioids are an effective, and often necessary, treatment of postoperative pain after total knee arthroplasty (TKA). However, it is often difficult to know how much medication patients will need after discharge. The purpose of this study was to determine if patients discharged with greater quantities of opioids after TKA are more likely to request refills. METHODS: This is a retrospective review of 105 primary TKAs performed with at least 1 year of follow-up...
March 2, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28375661/pain-management-of-malignant-psoas-syndrome-under-epidural-analgesia-during-palliative-radiotherapy
#9
Takayo Ota, Masaru Makihara, Hiroshi Tsukuda, Ryuji Kajikawa, Masayuki Inamori, Nozomi Miyatake, Noriko Tanaka, Masahiro Tokunaga, Yoshikazu Hasegawa, Takuhito Tada, Masahiro Fukuoka
Malignant psoas syndrome is a rare malignant condition presenting as lumbosacral plexopathy and painful fixed flexion of the hip. Metastasis to the psoas muscle is observed, which damages the nerve bundles in the lumbosacral plexuses. The syndrome presents as refractory lower back pain with several other neurological symptoms. The pain is difficult to control because it is a mixture of nociceptive and neuropathic pain, which indicates that treatment requires a versatile approach. The authors report a case of severe back pain caused by metastasis to the psoas muscle of advanced gastric cancer in a patient who underwent palliative radiotherapy under epidural analgesia...
April 4, 2017: Journal of Pain & Palliative Care Pharmacotherapy
https://www.readbyqxmd.com/read/28371835/effectiveness-and-safety-of-once-daily-extended-release-hydrocodone-in-individuals-previously-receiving-immediate-release-oxycodone-for-chronic-pain
#10
Joseph Pergolizzi, Maribeth Kowalski, Ellie He
Objectives. : This study evaluated the safety and effectiveness of a once-daily, single-entity, extended-release hydrocodone bitartrate (HYD) among patients with chronic noncancer and non-neuropathic pain who required opioid rotation from a previous analgesic regimen that primarily consisted of immediate-release (IR) oxycodone. Methods. : Post hoc analyses of a primary study that assessed HYD 20 to 120 mg over a 52-week period are presented. The primary study included a dose titration period (up to 45 days), a 52-week maintenance period, and an optional taper period (up to 14 days)...
March 28, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28369523/desomorphine-screening-using-commercial-enzyme-linked-immunosorbent-assays
#11
Jessica Winborn, Sarah Kerrigan
Desomorphine ("Krokodil") is a semi-synthetic opioid that has drawn attention as a recreational drug, particularly in Russia, neighboring former Soviet Republics, Eastern and Central Europe. It has no accepted medicinal uses and is currently a schedule I drug in the United States. In clandestine environments, desomorphine is synthesized from codeine using red phosphorous, hydroiodic acid and gasoline. Residual starting materials in illicit preparations have been associated with severe dermatological effects and extensive tissue necrosis...
March 17, 2017: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/28345746/an-analysis-of-errors-discrepancies-and-variation-in-opioid-prescriptions-for-adult-outpatients-at-a-teaching-hospital
#12
Mark C Bicket, Deepa Kattail, Myron Yaster, Christopher L Wu, Peter Pronovost
OBJECTIVE: To determine opioid-prescribing patterns and rate of three types of errors, discrepancies, and variation from ideal practice. DESIGN: Retrospective review of opioid prescriptions processed at an outpatient pharmacy. SETTING: Tertiary institutional medical center. PATIENTS: We examined 510 consecutive opioid medication prescriptions for adult patients processed at an institutional outpatient pharmacy in June 2016 for patient, provider, and prescription characteristics...
January 2017: Journal of Opioid Management
https://www.readbyqxmd.com/read/28345745/in-vitro-and-in-vivo-assessment-of-the-abuse-potential-of-pf614-a-novel-bio-md%C3%A2-prodrug-of-oxycodone
#13
D Lynn Kirkpatrick, William K Schmidt, Ricardo Morales, John Cremin, Julie Seroogy, Craig Husfeld, Thomas Jenkins
OBJECTIVE: The need for pain medication which will not lead to abuse is well recognized. Ensysce has designed prodrug analogs of the commonly used pain medications including hydromorphone, oxycodone (OC), hydrocodone, and morphine that limit their use to oral delivery, two of which are in clinical development. This study was undertaken to demonstrate that PF614, an extended-release prodrug of OC, allows the release of OC as designed when delivered orally, yet it resists ex vivo extraction with household chemicals and is pharmacologically inactive when administered by nonoral routes (nasal and parenteral), thereby substantially reducing its intravenous (IV) and intranasal abuse potential...
January 2017: Journal of Opioid Management
https://www.readbyqxmd.com/read/28345743/opioids-and-nonopioids-for-postoperative-pain-control-in-patients-with-chronic-kidney-disease
#14
Michele Binhas, Julia Egbeola-Martial, Michael D Kluger, Francoise Roudot-Thoraval, Philippe Grimbert
OBJECTIVES: To evaluate postoperative pain management (POPM) practices by anesthesiologists caring for patients with chronic kidney disease (CKD). DESIGN: Prospective one-time survey endorsed by the French Society of Anesthesia and Intensive Care (SFAR). SETTING: A self-administered online questionnaire was distributed to members of SFAR nationally. PARTICIPANTS: Three hundred seven SFAR members participated in the study...
January 2017: Journal of Opioid Management
https://www.readbyqxmd.com/read/28343650/-surveillance-system-on-drug-abuse-interest-of-the-french-national-oppidum-program-of-french-addictovigilance-network
#15
Elisabeth Frauger, Liselotte Pochard, Quentin Boucherie, Adeline Giocanti, Cécile Chevallier, Amélie Daveluy, Valérie Gibaja, Anne-Sylvie Caous, Céline Eiden, Nicolas Authier, Reynald Le Boisselier, Marylène Guerlais, Émilie Jouanjus, Marion Lepelley, Véronique Pizzoglio, Stéphanie Pain, Nathalie Richard, Joëlle Micallef
It is important to assess drug abuse liability in 'real life' using different surveillance systems. OPPIDUM ('Observation of illegal drugs and misuse of psychotropic medications') surveillance system anonymously collects information on drug abuse and dependence observed in patients recruited in specialized care centers dedicated to drug dependence. The aim of this article is to demonstrate the utility of OPPIDUM system using 2015 data. OPPIDUM is a cross-sectional survey repeated each year since 1995. In 2015, 5003 patients described the modality of use of 10,159 psychoactive drugs...
February 22, 2017: Thérapie
https://www.readbyqxmd.com/read/28340451/the-role-of-drug-drug-interactions-in-prostate-cancer-treatment-focus-on-abiraterone-acetate-prednisone-and-enzalutamide
#16
REVIEW
Marzia Del Re, Stefano Fogli, Lisa Derosa, Francesco Massari, Paul De Souza, Stefania Crucitta, Sergio Bracarda, Daniele Santini, Romano Danesi
Elderly patients with cancer may have comorbidities, each requiring additional pharmacologic treatment. Therefore, the occurrence of pharmacokinetic (PK) and pharmacodynamic (PD) interactions is very likely, and the risk of adverse reactions (ADRs), due to the narrow therapeutic window of anticancer drugs, is increased. Drug-drug interactions (DDIs) may occur in prostate cancer patients due to inhibition by abiraterone of liver cytochrome P450 (CYP)-dependent enzymes CYP2C8 and 2D6, which are involved in the metabolism of approximately 25% of all drugs, and induction by enzalutamide of CYP3A4, 2C9 and 2C19, which metabolize up to 50% of medications...
March 9, 2017: Cancer Treatment Reviews
https://www.readbyqxmd.com/read/28340258/hydrocodone-is-more-effective-than-morphine-or-oxycodone-in-suppressing-the-development-of-burn-induced-mechanical-allodynia
#17
Michael A Emery, M L Shawn Bates, Paul J Wellman, Shoshana Eitan
Background. : Pain is the most frequent complaint of burn-injured patients. Opioids are commonly used in the course of treatment. However, there is a lack of rodent studies that examine the differential effects of various opioids on burn pain. Objective. : This study compared the ability of morphine, oxycodone, and hydrocodone to suppress the development of burn-induced mechanical allodynia and reduce pain sensitivity. Methods. : Mice were examined for their baseline pain sensitivity thresholds using the von Frey Filaments test...
March 18, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28340145/human-abuse-potential-of-the-new-opioid-analgesic-molecule-nktr-181-compared-with-oxycodone
#18
Lynn Webster, Jack Henningfield, August R Buchhalter, Suresh Siddhanti, Lin Lu, Aleksandrs Odinecs, Carlo J Di Fonzo, Michael A Eldon
Objective.:  Evaluate the human abuse potential, pharmacokinetics, pharmacodynamics, and safety of NKTR-181, a novel mu-opioid agonist molecule, relative to oxycodone. Design.:  This randomized, single-center, double-blind, active- and placebo-controlled five-period crossover study enrolled healthy, adult, non-physically dependent recreational opioid users. Setting.:  Inpatient clinical research site. Subjects. : Forty-two randomized subjects (73...
March 10, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28340060/physician-dispensing-of-oxycodone-and-other-commonly-used-opioids-2000-2015-united-states
#19
Karin Ann Mack, Christopher McCall Jones, Roderick John McClure
Objective.:  An average of 91 people in the United States die every day from an opioid-related overdose (including prescription opioids and heroin). The direct dispensing of opioids from health care practitioner offices has been linked to opioid-related harms. The objective of this study is to describe the changing nature of the volume of this type of prescribing at the state level. Methods.:  This descriptive study examines the distribution of opioids by practitioners using 1999-2015 Automation of Reports and Consolidated Orders System data...
March 15, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28339912/pharmacogenomics-and-patient-treatment-parameters-to-opioid-treatment-in-chronic-pain-a-focus-on-morphine-oxycodone-tramadol-and-fentanyl
#20
Renae A Lloyd, Elizabeth Hotham, Catherine Hall, Marie Williams, Vijayaprakash Suppiah
Objective. : Opioids are one of the most commonly prescribed medicines for chronic pain. However, their use for chronic pain has been controversial. The objective of this literature review was to identify the role of genetic polymorphisms on patient treatment parameters (opioid dose requirements, response, and adverse effects) for opioids used in malignant and nonmalignant chronic pain. The opioids that this review focuses on are codeine, morphine, oxycodone, tramadol, and fentanyl...
February 24, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
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