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https://www.readbyqxmd.com/read/28595427/challenging-equipotency-calculation-for-hydromorphone-after-long-term-intravenous-application
#1
Benjamin Luchting, Banafscheh Rachinger-Adam, Nikolai Hulde, Jens Heyn, Shahnaz Christina Azad
In advanced stages, most cancer patients suffer from pain which can usually be well controlled following the World Health Organization (WHO) level scheme. While the majority of patients report adequate pain relief by strong opioids (WHO III), some require an opioid rotation. Despite the existence of conversion tables, these rotations mea lead to inadequate pain control or life threatening events. Here, we report about a patient with urothelial cell carcinoma presenting in our Department of Pain Medicine with massive pain aggravation up to NRS values of 10/10 despite administration of the highest dose of intravenously applied hydromorphone...
March 16, 2017: Annals of Palliative Medicine
https://www.readbyqxmd.com/read/28550642/post-heroin-dose-tissue-distribution-of-6-monoacetylmorphine-6-mam-with-maldi-imaging
#2
Belin G Teklezgi, Annapurna Pamreddy, Sooraj Baijnath, Nirmala D Gopal, Tricia Naicker, Hendrik G Kruger, Thavendran Govender
Heroin is an illicit opioid drug which is commonly abused and leads to dependence and addiction. Heroin is considered a pro-drug and is rapidly converted to its major active metabolite 6-monoacetylmorphine (6-MAM) which mediates euphoria and reward through the stimulation of opioid receptors in the brain. The aim of this study was to investigate the distribution and localization of 6-MAM in the healthy Sprague Dawley rat brain following intraperitoneal (i.p) administration of heroin (10 mg/kg), using matrix-assisted laser desorption/ionization mass spectrometric imaging (MALDI-MSI), in combination with quantification via liquid chromatography mass spectrometry (LC-MS/MS)...
May 26, 2017: Journal of Molecular Histology
https://www.readbyqxmd.com/read/28523735/variability-in-prescription-opioid-intake-and-reinforcement-amongst-129-substrains
#3
Susan M Jimenez, Aiden F Healy, Michal A Coelho, Chelsea N Brown, Tod E Kippin, Karen K Szumlinski
Opioid abuse in the United States has reached epidemic proportions, with treatment admissions and deaths associated with prescription opioid abuse quadrupling over the past 10 years. Although genetics are theorized to contribute substantially to inter-individual variability in the development, severity, and treatment outcomes of opioid abuse/addiction, little direct preclinical study has focused on the behavioral genetics of prescription opioid reinforcement and drug-taking. Herein, we employed different 129 substrains of mice currently available from The Jackson Laboratory (129S1/SvlmJ, 129X1/SvJ, 129S4/SvJaeJ and 129P3/J) as a model system of genetic variation and assayed mice for oral opioid intake and reinforcement, as well as behavioral and somatic signs of dependence...
May 19, 2017: Genes, Brain, and Behavior
https://www.readbyqxmd.com/read/28476033/dexmedetomidine-plus-sufentanil-for-pediatric-flexible-bronchoscopy-a-retrospective-clinical-trial
#4
Xiujing Dang, Weidong Hu, Zhendong Yang, Shiyu Su
Several studies have reported the use of dexmedetomidine (DEX) plus opioids for flexible bronchoscopy in both adults and children. To determine whether DEX plus sufentanil (SF) is safe for children, 142 children undergoing flexible bronchoscopy were assigned to one of three groups, each of which received the same SF loading dose and similar DEX and SF maintenance doses, but different loading doses of DEX: DS1 (DEX 0.5 μg·kg-1), DS2 (DEX 1.0 μg·kg-1), and DS3 (DEX 1.5 μg·kg-1). The Ramsay sedation scale was maintained at 3 in all groups...
June 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/28414496/impaired-psychomotor-function-and-plasma-methadone-and-levo-alpha-acetylmethadol-laam-concentrations-in-opioid-substitution-patients
#5
David A L Newcombe, Andrew A Somogyi, Felix Bochner, Jason M White
Tolerance to the psychomotor impairing effects of opioid drugs is expected to develop with repeated dosing, but may be incomplete. The relationship between plasma opioid concentration and psychomotor function in opioid-dependent patients was examined to determine whether impairment was more likely at the time of highest plasma drug concentration. Sixteen patients participating in a cross-over trial comparing methadone and LAAM completed a tracking task (OSPAT) 11 times over the dosing-interval for methadone (24-hrs) and LAAM (48-hrs)...
June 2017: Experimental and Clinical Psychopharmacology
https://www.readbyqxmd.com/read/28376280/independent-and-interactive-effects-of-oprm1-and-dat1-polymorphisms-on-alcohol-consumption-and-subjective-responses-in-social-drinkers
#6
Elise M Weerts, Gary S Wand, Brion Maher, Xiaoqiang Xu, Mary Ann Stephens, Xiaoju Yang, Mary E McCaul
BACKGROUND: The current study examined independent and interactive effects of polymorphisms of the mu opioid receptor gene (OPRM1, A118G) and variable number tandem repeats of the dopamine transporter gene (DAT1, SLC6A3) on alcohol consumption and subjective responses to alcohol in 127 young, healthy, social drinkers. METHODS: Participants completed an in-person assessment, which included self-reported alcohol drinking patterns and blood sampling for DNA, and in a second visit, a cumulative alcohol dosing procedure with subjective ratings across multiple time points and breath alcohol contents (0...
April 4, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28292508/pharmacy-based-statewide-naloxone-distribution-a-novel-top-down-bottom-up-approach
#7
Kate J Morton, Brianna Harrand, Carly Cloud Floyd, Craig Schaefer, Julie Acosta, Bridget Claire Logan, Karen Clark
OBJECTIVE: To highlight New Mexico's multifaceted approach to widespread pharmacy naloxone distribution and to share the interventions as a tool for improving pharmacy-based naloxone practices in other states. SETTING: New Mexico had the second highest drug overdose death rate in 2014 of which 53% were related to prescription opioids. Opioid overdose death is preventable through the use of naloxone, a safe and effective medication that reverses the effects of prescription opioids and heroin...
March 2017: Journal of the American Pharmacists Association: JAPhA
https://www.readbyqxmd.com/read/28263128/predictors-of-narcotic-use-after-percutaneous-nephrolithotomy
#8
Nazih Khater, Mohamed Keheila, Michelle Lightfoot, Jim Shen, Samuel Abourbih, Muhannad Alsyouf, Roger Li, D Duane Baldwin
INTRODUCTION: Percutaneous nephrolithotomy (PCNL) is associated with significant variability in postoperative pain and subsequent narcotic use. The purpose of this study was to determine the factors associated with high narcotic use following PCNL. MATERIALS AND METHODS: A single-center retrospective review of patients undergoing initial PCNL between 2004 and 2014 was performed. Preoperative, intraoperative and postoperative factors associated with postoperative narcotic usage were analyzed...
February 2017: Canadian Journal of Urology
https://www.readbyqxmd.com/read/28252574/abcb1-polymorphisms-and-cold-pressor-pain-responses-opioid-dependent-patients-on-methadone-maintenance-therapy
#9
Zalina Zahari, Chee Siong Lee, Muslih Abdulkarim Ibrahim, Nurfadhlina Musa, Mohd Azhar Mohd Yasin, Yeong Yeh Lee, Soo Choon Tan, Nasir Mohamad, Rusli Ismail
BACKGROUND: Methadone is a substrate of the P-glycoprotein efflux transporter, which is encoded by ABCB1 (MDR1), and thus, ABCB1 polymorphisms may influence the transport of methadone at the blood-brain barrier, affecting its adverse effects. OBJECTIVES: This study investigated the association between ABCB1 polymorphisms and cold pressor pain responses among opioid-dependent patients on methadone maintenance therapy (MMT). METHODS: Malay male opioid-dependent patients receiving MMT (n = 148) were recruited...
March 2017: Nursing Research
https://www.readbyqxmd.com/read/28241764/changes-over-time-in-prescription-practices-of-pain-medications-in-switzerland-between-2006-and-2013-an-analysis-of-insurance-claims
#10
Maria M Wertli, Oliver Reich, Andri Signorell, Jakob M Burgstaller, Johann Steurer, Ulrike Held
BACKGROUND: In Europe, scant information is available about prescription practices for pain medications. The aim of this research was to assess changes in prescription rates of non-opioid, weak opioid, and strong opioid medications between 2006 and 2013 in the Swiss population. METHODS: Using insurance claims data covering one-sixth of the Swiss population, we analyzed the numbers of reimbursed pain medications, the number of reimbursements per persons, and the cumulative dose in milligrams...
February 27, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/28152878/time-trends-in-opioid-use-in-cancer-and-noncancer-patients-observations-from-administrative-data
#11
Carlo DeAngelis, Craig Earle, Clare Atzema, Deborah Jane Dudgeon, Tara Gomes, Doris Howell, Amna Husain, Mary Ann O'Brien, Hsien Seow, Jonathan Sussman, Rinku Sutradhar, Anna Chu, Ying Liu
298 Background: Opioid prescribing has been increasingly scrutinized in the non-cancer patient population due to concerns with morbidity, mortality and diversion. Resulting regulatory changes have decreased prescribing. As an unintended consequence, we hypothesized that cancer patients might be similarly impacted. METHODS: All Ontario residents ≥ 65 years are eligible for government paid pharmacare. For each year from 2004 to 2013, Ontarians ≥ 65 years were stratified into 3 groups: no cancer history, cancer diagnosis > 5 years ago and cancer diagnosis ≤ 5 years ago...
March 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28089852/dopamine-d1-receptor-agonist-treatment-attenuates-extinction-of-morphine-conditioned-place-preference-while-increasing-dendritic-complexity-in-the-nucleus-accumbens-core
#12
Kendra L Kobrin, Danielle T Arena, Stephen C Heinrichs, Olivia H Nguyen, Gary B Kaplan
The dopamine D1 receptor (D1R) has a role in opioid reward and conditioned place preference (CPP), but its role in CPP extinction is undetermined. We examined the effect of D1R agonist SKF81297 on the extinction of opioid CPP and associated dendritic morphology in the nucleus accumbens (NAc), a region involved with reward integration and its extinction. During the acquisition of morphine CPP, mice received morphine and saline on alternate days; injections were given immediately before each of eight daily conditioning sessions...
March 30, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28042391/identification-of-factors-associated-with-sedation-tolerance-in-5000-patients-undergoing-outpatient-colonoscopy-canadian-tertiary-center-experience
#13
Alexandra Shingina, George Ou, Oliver Takach, Sigrid Svarta, Ricky Kwok, Jessica Tong, Kieran Donaldson, Eric Lam, Robert Enns
AIM: To develop a prediction model aimed at identifying patients that may require higher than usual sedation doses during colonoscopy. METHODS: A retrospective chart review on 5000 patients who underwent an outpatient colonoscopy at St. Paul's Hospital from 2009 to 2010 was conducted in order to develop a model for identifying patients who will require increased doses of sedatives. Potential predictor variables including age, gender, endoscopy indication, high sedation requirements during previous endoscopies, difficulty of the procedure, bowel preparation quality, interventions, findings as well as current use of benzodiazepines, opioids and alcohol were analyzed...
December 16, 2016: World Journal of Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28042019/endomorphin-2-analogs-with-c-terminal-esterification-produce-potent-systemic-antinociception-with-reduced-tolerance-and-gastrointestinal-side-effects
#14
Chang-Lin Wang, Ting-Ting Qiu, Dai-Jun Yang, Bi-Yu Yuan, Feng-Tong Han, Li Li, Ning Gu
C-terminal esterification of opioid peptides may change their opioid activities due to the modified physicochemical properties. In the present study, the pharmacological activities of C-terminal esterified endomorphin-2 (EM-2) analogs 1-3 were characterized by in vitro metabolic stability and octanol/buffer distribution assays. Also, the antinociceptive profiles in the radiant heat paw withdrawal test and related side effects of these analogs were determined. Our results showed that all three analogs significantly increased the metabolic stability and lipophilicity...
December 29, 2016: Neuropharmacology
https://www.readbyqxmd.com/read/28006937/morphine-decreases-social-interaction-of-adult-male-rats-while-thc-does-not-affect-it
#15
R Šlamberová, A Mikulecká, E Macúchová, I Hrebíčková, M Ševčíková, K Nohejlová, M Pometlová
The aim of the present study was to compare effect of three low doses of morphine (MOR) and delta9-tetrahydrocannabinol (THC) on social behavior tested in Social interaction test (SIT). 45 min prior to testing adult male rats received one of the drugs or solvents: MOR (1; 2.5; 5 mg/kg); saline as a solvent for MOR; THC (0.5; 1; 2 mg/kg); ethanol as a solvent for THC. Occurrence and time spent in specific patterns of social interactions (SI) and non-social activities (locomotion and rearing) was video-recorded for 5 min and then analyzed...
December 22, 2016: Physiological Research
https://www.readbyqxmd.com/read/27746542/a-randomized-controlled-study-between-fentanyl-and-butorphanol-with-low-dose-intrathecal-bupivacaine-to-facilitate-early-postoperative-ambulation-in-urological-procedures
#16
Arvind Kumar, Ritesh Kumar, Vinod Kumar Verma, Chandrakant Prasad, Rajesh Kumar, Shashi Kant, Gunjan Kumar, Neha Singh, Rupam Kumari
INTRODUCTION: Opioids are widely used in conjunction with local anesthetics as they permit the use of lower dose of local anesthetics while providing adequate anesthesia and analgesia. It both provides adequate anesthesia as well as lower drug toxicity neuraxial administration of opioids in conjunction with local anesthetics improves the quality of intraoperative analgesia and prolongs the duration of postoperative analgesia. Bupivacaine is the most commonly used drug for subarachnoid block due to its lesser side effects...
September 2016: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/27676695/dose-and-duration-of-opioid-use-in-patients-with-cancer-and-noncancer-pain-at-an-outpatient-hospital-setting-in-malaysia
#17
Che S Zin, Norny A Rahman, Che R Ismail, Leong W Choy
BACKGROUND: There are currently limited data available on the patterns of opioid prescribing in Malaysia. This study investigated the patterns of opioid prescribing and characterized the dosing and duration of opioid use in patients with noncancer and cancer pain. METHODS: This retrospective, cross-sectional study was conducted at an outpatient hospital setting in Malaysia. All prescriptions for opioids (dihydrocodeine, fentanyl, morphine, and oxycodone) issued between January 2013 and December 2014 were examined...
September 27, 2016: Pain Practice: the Official Journal of World Institute of Pain
https://www.readbyqxmd.com/read/27664442/freeze-dried-extracts-of-bidens-biternata-lour-merr-and-sheriff-show-significant-antidiarrheal-activity-in-in-vivo-models-of-diarrhea
#18
COMPARATIVE STUDY
Dennis Gacigi Kinuthia, Anne W Muriithi, Peter Waweru Mwangi
ETHNOPHARMACOLOGICAL RELEVANCE OF THE STUDY: Diarrhea remains one of the main killers of children aged below five years. Traditional antidiarrheal remedies form a potentially viable source of novel low cost efficacious treatments in low resource settings. There is therefore a pressing need to scientifically evaluate these remedies. AIM OF THE STUDY: This study aimed to investigate the in vivo and in vitro antidiarrheal activity of freeze dried Bidens biternata, a herb used in traditional Ayurvedic medicine in the management of diarrhea...
December 4, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27555136/combined-preoperative-femoral-and-sciatic-nerve-blockade-improves-analgesia-after-anterior-cruciate-ligament-reconstruction-a-randomized-controlled-clinical-trial
#19
RANDOMIZED CONTROLLED TRIAL
Monica W Harbell, Joshua M Cohen, Kerstin Kolodzie, Matthias Behrends, Matthias R Braehler, Sakura Kinjo, Brian T Feeley, Pedram Aleshi
STUDY OBJECTIVE: To compare preoperative femoral (FNB) with combined femoral and sciatic nerve block (CFSNB) in patients undergoing arthroscopic anterior cruciate ligament (ACL) reconstruction. DESIGN: Prospective, randomized clinical trial. SETTING: Ambulatory surgery center affiliated with an academic medical center. PATIENTS: Sixty-eight American Society of Anesthesiology physical status I and II patients undergoing arthroscopic ACL reconstruction...
September 2016: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/27552062/intravenous-lidocaine-infusions-in-a-multidirectional-model-of-treatment-of-neuropathic-pain-patients
#20
Anna Przeklasa-Muszyńska, Magdalena Kocot-Kępska, Jan Dobrogowski, Maciej Wiatr, Joanna Mika
BACKGROUND: Neuropathic pain, is caused by damage or disease affecting the somatosensory nervous system, leads to deterioration of the quality of life of patients. Most commonly, this deterioration is due to the inefficacy of treatment or to the adverse effects of systemic treatment. Pharmacotherapy of neuropathic pain involves the use of antiepileptic agents, antidepressants, and opioids that may lead to numerous adverse effects, particularly in elderly patients. Intravenous infusions of lidocaine may improve the efficacy of the analgesic treatment of neuropathic pain patients while not causing any significant adverse effects...
October 2016: Pharmacological Reports: PR
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