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https://www.readbyqxmd.com/read/28814158/a-phase-i-study-of-the-pharmacokinetics-safety-and-tolerability-of-a-novel-tocopheryl-phosphate-mixture-oxymorphone-transdermal-patch-system
#1
Paul D Gavin, Lee S Simon, Thomas Schlagheck, Alisha J Smith, Janakan Krishnarajah
AIM: Characterize the pharmacokinetic profile and tolerability of two tocopheryl phosphate mixture/oxymorphone patch formulations in healthy subjects, and the active metabolite (6-OH-oxymorphone). MATERIALS & METHODS: Fifteen participants received a single application of oxymorphone patches +/- capsaicin for 72 h and were crossed-over for another 72 h. RESULTS: Plasma oxymorphone was detected approximately 7 h and 6-OH-oxymorphone after approximately 18-19 h postapplication of both formulations, respectively...
August 17, 2017: Pain Management
https://www.readbyqxmd.com/read/28802086/acute-kidney-injury-is-common-with-intravenous-abuse-of-extended-release-oral-oxymorphone-and-delayed-renal-recovery-rates-are-associated-with-increased-kdigo-staging
#2
Alex K Bonnecaze, Matthew Whitaker Wilson, Ajay Dharod, Alison Fletcher, P J Miller
BACKGROUND: Prescription opioid abuse poses a serious problem in the United States, representing 615 per 100,000 deaths annually. Extended-release oxymorphone (Opana-ER) is an oral opioid pain medication that has recently been found to cause thrombotic microangiopathy when intravenously abused. In this retrospective study, prevalence and outcomes of AKI among patients intravenously abusing extended-release oral oxymorphone were analyzed. METHODS: A query of electronic medical records for "drug abuse" at an academic medical center during January 2012 to December 2015 was performed and yielded 2350 patients...
August 12, 2017: Nephrology
https://www.readbyqxmd.com/read/28791598/opioid-medications-in-the-management-of-chronic-abdominal-pain
#3
REVIEW
Dajie Wang
PURPOSE OF REVIEW: Chronic abdominal pain is a complex medical condition. The causes of chronic abdominal pain are extremely diverse ranging from chronic pancreatitis, Crohn's disease, to chronic pain with no clear etiology. Treatment of chronic abdominal pain remains a challenge in our clinical practice. While current interventions with celiac plexus blocks and pain medications provide some relief for these patients, but these treatments are typically less efficacious and limited by various adverse effects...
August 8, 2017: Current Pain and Headache Reports
https://www.readbyqxmd.com/read/28718268/oxymorphone-induced-thrombotic-microangiopathy-mimicking-atypical-haemolytic-uremic-syndrome
#4
Amibhen Gandhi, Saad Ullah, Shani Kotadia, Samer Nasser
Atypical Haemolytic Uremic Syndrome (aHUS) is a rare life threatening entity characterized by thrombocytopenia, haemolytic anaemia and renal dysfunction. It is a thrombotic microangiopathy related to genetic mutations in the alternate complement pathway and has a distinct pathophysiology which makes it harder to distinguish from other microangiopathies. We present a case of a 25-year-old male patient with history of polysubstance abuse who presented with chest pain and dyspnoea. He admitted to using injectable oxymorphone (Opana) two weeks before presentation...
April 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28716778/thrombotic-microangiopathy-associated-with-intravenous-injection-of-extended-release-oxycodone
#5
Kate J Robson, Danielle Clucas, Robin Filshie, Harshal Nandurkar
We describe the case of a 35-year-old man presenting with thrombotic microangiopathy (TMA) and renal impairment following, as he later disclosed, intravenous injection of oral formulation tamper-resistant extended-release oxycodone hydrochloride (Oxycontin). Recurrent misuse of this agent was associated with relapsing TMA despite treatment with terminal complement inhibitor eculizumab. Cases of TMA have been reported in the USA in association with intravenous misuse of extended-release oxymorphone (Opana ER) after the introduction of a new non-crushable formulation in 2012...
July 17, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28607779/thrombotic-microangiopathy-secondary-to-intravenous-abuse-of-opana%C3%A2-er
#6
Kamia Thakur, Vaibhav Agrawal, Ashley Kass, Lauren M Dimarino, R Patrick Dorion, Joseph Vadakara
Opana ER (oxymorphone) is an opioid drug available throughout the United States, and intravenous abuse of the crushed oral formulation has been associated with drug-induced thrombotic microangiopathy. In this abstract, we describe two young patients who lived together and used Opana ER intravenously. Both presented with microangiopathic hemolytic anemia that mimicked thrombotic thrombocytopenic purpura (TTP). Treating this condition poses a clinical challenge, as it is difficult to distinguish it from TTP. The role for plasma exchange is not clear but can be used while awaiting the results of the ADAMTS-13 activity, but ultimately supportive care with drug discontinuation is the recommended therapy of choice...
2017: Case Reports in Hematology
https://www.readbyqxmd.com/read/28580158/opana-induced-thrombotic-microangiopathy-masquerading-as-thrombotic-thrombocytopenic-purpura
#7
Byung H Ban, Ashish Verma, Maria Tudor, Jigme Sethi
Opana (oxymorphone) is a powerful semi-synthetic opioid agonist used for chronic pain management that is ingested orally. However, improper injection of Opana can lead to a rare and fatal blood disorder known as thrombotic microangiopathy. Opana-induced thrombotic microangiopathy can be easily mistaken for thrombotic thrombocytopenic purpura (TTP), leading to the initiation of therapeutic plasma exchange. Current literature has conflicting views on the necessity of therapeutic plasma exchange for the treatment of Opana-induced thrombotic microangiopathy...
June 2017: Oxford Medical Case Reports
https://www.readbyqxmd.com/read/28526155/ketorolac-oxymorphone-tapentadol-and-tramadol-a-comprehensive-review
#8
REVIEW
Nalini Vadivelu, Daniel Chang, Erik M Helander, Gregory J Bordelon, Alice Kai, Alan D Kaye, Dora Hsu, Daniel Bang, Inderjeet Julka
Pain remains a tremendous burden on patients and for the health care system, with uncontrolled pain being the leading cause of disability in this country. There are a variety of medications that can be used in the treatment of pain, including ketorolac, oxymorphone, tapentadol, and tramadol. Depending on the clinical situation, these drugs can be used as monotherapy or in conjunction with other types of medications in a multimodal approach. A strong appreciation of pharmacologic properties of these agents and potential side effects is warranted for clinicians...
June 2017: Anesthesiology Clinics
https://www.readbyqxmd.com/read/28481682/acute-impairing-effects-of-morphine-related-to-driving-a-systematic-review-of-experimental-studies-to-define-blood-morphine-concentrations-related-to-impairment-in-opioid-na%C3%A3-ve-subjects
#9
Maren Cecilie Strand, Marianne Arnestad, Bente Fjeld, Jørg Mørland
OBJECTIVE: To look for dose- and concentration-effect relationships in experimental studies on single-dose administration of morphine on traffic relevant behavioral tests by a systematic literature review, and possibly to see if a dose/concentration could be defined, below which few or no tests would be affected. METHODS: Searches for corresponding literature were conducted using MEDLINE, EMBASE, and PsycINFO, throughout March of 2016. The search strategy consisted of words colligated to cognitive- and psychomotor functions of relevance to driving, in relation to morphine administration...
May 8, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28394703/comparative-analysis-of-opioid-queries-on-erowid-org-an-opportunity-to-advance-harm-reduction
#10
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...
August 24, 2017: Substance Use & Misuse
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...
June 1, 2017: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/28257549/analysis-of-intensive-care-unit-admission-and-sequelae-in-patients-intravenously-abusing-extended-release-oral-oxymorphone
#12
Matthew W Wilson, Alex K Bonnecaze, Ajay Dharod, Peter J Miller
OBJECTIVES: Prescription drug abuse is a major public health problem in the United States, with the rate of opioid-related deaths nearly quadrupling between 2000 and 2014. Extended-release oral oxymorphone hydrochloride (Opana ER) is a long-acting opioid prescribed for chronic pain; however, it also has the potential to be abused via intravenous injection. This retrospective review sought to analyze specific complications and sequelae requiring intensive care unit resources for patients intravenously abusing extended-release oral oxymorphone...
March 2017: Southern Medical Journal
https://www.readbyqxmd.com/read/28244808/cyp2d6-pharmacogenetic-and-oxycodone-pharmacokinetic-association-study-in-pediatric-surgical-patients
#13
MULTICENTER STUDY
Rajiv Balyan, Marc Mecoli, Raja Venkatasubramanian, Vidya Chidambaran, Nichole Kamos, Smokey Clay, David L Moore, Jagroop Mavi, Chris D Glover, Peter Szmuk, Alexander Vinks, Senthilkumar Sadhasivam
AIM: Oxycodone is partly metabolized to the active metabolite oxymorphone by hepatic CYP2D6 in the liver. Significant genetic variability in CYP2D6 activity affects oxymorphone formation. This study aimed to associate CYP2D6 genotype and oxycodone's metabolism. METHODS: 30 children were administered oral oxycodone postoperatively. Plasma levels of oxycodone and oxymorphone, and CYP2D6 genotype were analyzed. CYP2D6 genotype and oxycodone metabolism phenotype were determined based on CYP2D6 total activity score (TAS) and metabolism phenotype: poor metabolizer (PM), intermediate metabolizer (IM), extensive metabolizer (EM) or ultrarapid metabolizer (UM)...
March 2017: Pharmacogenomics
https://www.readbyqxmd.com/read/28192197/characterization-of-3-h-oxymorphone-binding-sites-in-mouse-brain-quantitative-autoradiography-in-opioid-receptor-knockout-mice
#14
Ji Hoon Yoo, Anna Borsodi, Géza Tóth, Sándor Benyhe, Robert Gaspar, Audrey Matifas, Brigitte L Kieffer, Athanasios Metaxas, Ian Kitchen, Alexis Bailey
Oxymorphone, one of oxycodone's metabolic products, is a potent opioid receptor agonist which is thought to contribute to the analgesic effect of its parent compound and may have high potential abuse liability. Nonetheless, the in vivo pharmacological binding profile of this drug is still unclear. This study uses mice lacking mu (MOP), kappa (KOP) or delta (DOP) opioid receptors as well as mice lacking all three opioid receptors to provide full characterisation of oxymorphone binding sites in the brain. Saturation binding studies using [(3)H]oxymorphone revealed high affinity binding sites in mouse brain displaying Kd of 1...
March 16, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28162690/-443-evaluation-of-the-clinical-abuse-potential-of-opana-er-versus-oxymorphone-hcl-powder
#15
N Shusterman, F Diana, C Ciliberto, Q Xiang, J Jobes, D Kelsh, B Vince
No abstract text is available yet for this article.
April 2016: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/28156677/insurer-pre-authorization-and-copayment-for-palliative-patients-with-cancer-receiving-opioids-other-than-morphine
#16
Akhila Sunkepally Reddy, Eden Mae Rodriguez, Eduardo Bruera
217 Background: Uncontrolled pain is one of the main fears for patients with cancer and their families. Opioid analgesics are highly effective agents, but the choice of type, route, and dose needs to be personalized. The highly cost of some of them can make it difficult for patients to received adequate pain control without appropriate insurance coverage. There is a lack of information regarding the frequency of denials or heavy copayments by insurers. METHODS: We evaluated 143 continuous opioid test claims for prescriptions by our palliative care providers for opioids other than morphine, including transdermal fentanyl, extended release oxycodone, hydromorphone and oxymorphone...
October 9, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28119266/drugs-in-hair-part-i-metabolisms-of-major-drug-classes
#17
REVIEW
R M White
Currently, hair can be reliably tested for the presence of drugs. However, one major drawback to the use of parent drugs is the question of potential external or environmental contamination. The analysis of metabolites to confirm the use of the parent drugs was proposed in this short review. The development of hair as a test matrix and the incorporation of xenobiotics, in general, into the hair matrix were discussed. What constitutes an appropriate metabolite for drug testing to mirror the use of a parent drug was proposed and discussed...
January 2017: Forensic Science Review
https://www.readbyqxmd.com/read/28080998/determination-of-oxycodone-and-its-major-metabolites-noroxycodone-and-oxymorphone-by-ultra-high-performance-liquid-chromatography-tandem-mass-spectrometry-in-plasma-and-urine-application-to-real-cases
#18
Flaminia Pantano, Stefano Brauneis, Alexandre Forneris, Roberta Pacifici, Enrico Marinelli, Chrystalla Kyriakou, Simona Pichini, Francesco Paolo Busardò
BACKGROUND: Oxycodone is a narcotic drug widely used to alleviate moderate and severe acute and chronic pain. Variability in analgesic efficacy could be explained by inter-subject variations in plasma concentrations of parent drug and its active metabolite, oxymorphone. To evaluate patient compliance and to set up therapeutic drug monitoring (TDM), an ultra-high-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) assay was developed and validated for the parent drug and its major metabolites noroxycodone and oxymorphone...
August 28, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/27922764/comparison-of-abuse-suspected-suicidal-intent-and-fatalities-related-to-the-7-day-buprenorphine-transdermal-patch-versus-other-opioid-analgesics-in-the-national-poison-data-system
#19
COMPARATIVE STUDY
Paul M Coplan, Nelson E Sessler, Venkatesh Harikrishnan, Richa Singh, Charles Perkel
OBJECTIVE: Prescription opioid related abuse, suicide and death are significant public health problems. This study compares rates of poison center calls categorized as intentional abuse, suspected suicidal intent or fatality for the 7-day buprenorphine transdermal system/patch (BTDS) with other extended-release and long-acting (ER/LA) opioids indicated for chronic pain. METHODS: Retrospective 24-month cohort study using National Poison Data System data from July 2012 through June 2014...
January 2017: Postgraduate Medicine
https://www.readbyqxmd.com/read/27881622/stability-of-21-cocaine-opioid-and-benzodiazepine-drug-analytes-in-spiked-meconium-at-three-temperatures
#20
Fang Wu, Stephanie J Marin, Gwendolyn A McMillin
In this study, the stability of 21 cocaine, opioid and benzodiazepine analytes in spiked meconium was investigated at three storage temperatures: 4°C, room temperature (RT), and 37°C (body temperature). The drugs/metabolites included were hydrocodone, hydromorphone, codeine, morphine, 6-acetylmorphine (6-AM), oxycodone, oxymorphone, cocaine, cocaethylene, benzoylecgonine, m-hydroxybenzoylecgonine, diazepam, oxazepam, temazepam, nordiazepam, chlordiazepoxide, lorazepam, alprazolam, alpha-hydroxyalprazolam, clonazepam, 7-aminoclonazepam, midazolam, alpha-hydroxymidazolam and zolpidem...
April 1, 2017: Journal of Analytical Toxicology
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