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https://www.readbyqxmd.com/read/29153631/human-abuse-potential-of-brivaracetam-in-healthy-recreational-central-nervous-system-depressant-users
#1
Kerri A Schoedel, Armel Stockis, Edward M Sellers
BACKGROUND: Brivaracetam is a new antiepileptic drug indicated for adjunctive treatment of focal seizures in adults at a dose of 50-200mg/day taken in two equal doses. The objective of this study was to evaluate the abuse potential of brivaracetam compared with alprazolam (positive control), placebo, and levetiracetam. METHODS: This was a randomized, double-blind, triple-dummy, crossover study in healthy male and female recreational central nervous system (CNS) depressant users aged 18-55years, who could distinguish between the subjective effects of alprazolam 2mg and placebo...
November 15, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29153294/impact-of-family-history-of-substance-abuse-on-admission-opioid-dose-depressive-symptoms-and-pain-catastrophizing-in-patients-with-chronic-pain
#2
Elizabeth L Pestka, Julia Craner, Michele Evans, Virginia Nash, Njoki Kimondo, Deborah Pestka, Larissa Loukianova, Jeannie Sperry
The objectives of this study were to examine association between a family history of substance abuse and admission morphine equivalent dose, depression and pain catastrophizing screening scores, as well as reported personal history of substance use. The retrospective research was completed in an interdisciplinary three-week pain rehabilitation center. The subject cohort included admissions from January through December 2014 with 351 datasets for family history of substance abuse and oral morphine equivalency and 341 for depression, pain catastrophizing and use of substances...
November 15, 2017: Pain Management Nursing: Official Journal of the American Society of Pain Management Nurses
https://www.readbyqxmd.com/read/29147885/proceedings-of-the-2017-isev-symposium-on-hiv-neurohiv-drug-abuse-evs
#3
Guoku Hu, Sowmya Yelamanchili, Fatah Kashanchi, Norman Haughey, Vincent C Bond, Kenneth W Witwer, Lynn Pulliam, Shilpa Buch
Despite the success of combination antiretroviral therapy (cART), there is increased prevalence of HIV-associated neurocognitive disorders (HAND) in HIV-1-infected individuals on cART, which poses a major health care challenge. Adding further complexity to this long-term antiretroviral use is the comorbidity with drugs of abuse such as morphine, cocaine, and methamphetamine, which can in turn, exacerbate neurologic and cognitive deficits associated with HAND. Furthermore, HIV proteins, such as the transactivator of transcription (Tat) and the envelope protein (gp120), as well as antiretrovirals themselves can also contribute to the progression of neurodegeneration underlying HAND...
November 16, 2017: Journal of Neurovirology
https://www.readbyqxmd.com/read/29129606/transgenerational-blunting-of-morphine-induced-corticosterone-secretion-is-associated-with-dysregulated-gene-expression-in-male-offspring
#4
Fair M Vassoler, Anika M Toorie, Elizabeth M Byrnes
A number of parental experiences, even when occurring prior to conception, have been shown to induce transgenerational effects beyond the first generation. In the case of exposure to drugs of abuse, studies in rodents suggest that offspring demonstrate significant differences in how they respond to the drug to which their parent was exposed. We have previously observed significant alterations in morphine analgesia, conditioned place preference and self-administration in the offspring of females exposed to morphine during adolescent development...
November 9, 2017: Brain Research
https://www.readbyqxmd.com/read/29128652/differences-in-combinations-and-concentrations-of-drugs-of-abuse-in-fatal-intoxication-and-driving-under-the-influence-cases
#5
Hilde Erøy Edvardsen, Torill Tverborgvik, Joachim Frost, Sidsel Rogde, Inge Morild, Helge Waal, Thomas Clausen, Lars Slørdal, Vigdis Vindenes
BACKGROUND: In toxicology, international classification systems focus on single intoxicants as the cause of death. It is, however, well known that very few drug related deaths are caused by a single substance and that information concerning the drug concentrations as well as the combinations of drugs are essential in order to ascertain the cause of death. The aim of the study was to assess whether those prone to fatal intoxications differ significantly from chronic drug users - in terms of demographics and drug exposure patterns...
November 6, 2017: Forensic Science International
https://www.readbyqxmd.com/read/29112660/opioid-prescribing-patterns-patient-use-and-postoperative-pain-after-hysterectomy-for-benign-indications
#6
Sawsan As-Sanie, Sara R Till, Erika L Mowers, Courtney S Lim, Bethany D Skinner, Laura Fritsch, Alex Tsodikov, Vanessa K Dalton, Daniel J Clauw, Chad M Brummett
OBJECTIVE: To quantify physician prescribing patterns and patient opioid use in the 2 weeks after hysterectomy at an academic institution and to determine whether patient factors predict postsurgical opioid use and pain recovery. METHODS: We conducted a prospective quality initiative study by recruiting all English-speaking patients undergoing hysterectomy for benign, nonobstetric indications at a university hospital between August 2015 and December 2015, excluding those with major medical morbidities or substance abuse...
November 3, 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29072187/substance-abuse-and-cancer
#7
G I Moussas, A G Papadopoulou
Substance abuse is a health problem with serious psychological and psychiatric dimensions and multiple social and economic consequences. Cancer is a disease that threatens not only life and physical integrity but mental health as well. Oncology patients suffer from mental disorders in high rates, especially from depression and anxiety. The role of substance abuse in the pathogenesis of cancer is studied systematically, since there are research data supporting the mutagenic effects of certain substances. It has been supported that a possible dysregulation of the immune system is linked to the oncogenic processes induced by substances of abuse...
July 2017: Psychiatrikē, Psychiatriki
https://www.readbyqxmd.com/read/29056353/the-ghr-r-antagonist-jmv-2959-neither-induces-malaise-nor-alters-the-malaise-property-of-licl-in-the-adult-male-rat
#8
Juan A Rodriguez, Jean-Alain Fehrentz, Jean Martinez, Khoubaib Ben Haj Salah, Paul J Wellman
The orexigenic peptide ghrelin (GHR) interacts with ghrelin receptors (GHR-Rs) to modulate brain reinforcement and feeding circuits. Pharmacological inactivation of GHR-Rs via administration of the drug JMV 2959 attenuates the rewarding/reinforcing effects of several drugs of abuse including alcohol, morphine, amphetamine and nicotine. One view of these results is that inactivation of GHR-Rs taps into brain reinforcement/feeding circuits acted upon by drugs of abuse. An alternate explanation is that JMV 2959 may induce malaise, which in turn may limit reinforcement as well as food ingestion...
January 1, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29016905/relative-abuse-of-crush-resistant-prescription-opioid-tablets-via-alternative-oral-modes-of-administration
#9
Stephen F Butler, Ryan A Black, Alison B Fleming
Objective: Some crush-resistant tablet formulations (CRTs) reduce prescription opioid abuse by nonoral routes of administration (ROAs), especially insufflation and injection, while oral abuse increases. Oral abuse involving product manipulation vs swallowing whole for CRTs and comparators was examined. Methods: Abuse by oral modes of administration (e.g., swallowing whole, chewing, dissolving in the mouth), was examined using the ASI-MV, a computerized, clinical interview for adults in substance abuse treatment from January 2009 to March 2015...
July 8, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28992662/sample-preparation-method-for-the-combined-extraction-of-ethyl-glucuronide-and-drugs-of-abuse-in-hair
#10
Ulf Christian Juhl Meier, Thomas Briellmann, Eva Scheurer, Franz Dussy
In hair analysis often little hair sample is available while the analysis of a multitude of structurally diverse substances with different concentration ranges is demanded. Often, the analysis of the different substances requires different sample preparation methods, increasing the amount of required hair sample. When segmental hair analysis is necessary, the amount of needed hair sample is further increased. Therefore, the required sample amount for a full analysis can quickly exceed the available hair sample...
October 9, 2017: Drug Testing and Analysis
https://www.readbyqxmd.com/read/28986608/opiate-dependence-induces-cell-type-specific-plasticity-of-intrinsic-membrane-properties-in-the-rat-juxtacapsular-bed-nucleus-of-stria-terminalis-jcbnst
#11
Walter Francesconi, Attila Szücs, Fulvia Berton, George F Koob, Leandro F Vendruscolo, Pietro Paolo Sanna
RATIONALE: Drugs of abuse can alter circuit dynamics by modifying synaptic efficacy and/or the intrinsic membrane properties of neurons. The juxtacapsular subdivision of the bed nucleus of stria terminalis (jcBNST) has unique connectivity that positions it to integrate cortical and amygdala inputs and provide feed-forward inhibition to the central nucleus of the amygdala (CeA), among other regions. In this study, we investigated changes in the synaptic and intrinsic properties of neurons in the rat jcBNST during protracted withdrawal from morphine dependence using a combination of conventional electrophysiological methods and the dynamic clamp technique...
December 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28985334/simultaneous-quantitation-of-methamphetamine-ketamine-opiates-and-their-metabolites-in-urine-by-spe-and-lc-ms-ms
#12
Chu-An Yang, Hsiu-Chuan Liu, Dong-Liang Lin, Ray H Liu, You-Zung Hsieh, Shu-Pao Wu
Heroin, methamphetamine and ketamine have been the most commonly abused drugs in Taiwan. The presence of these drugs and their metabolites in postmortem specimens has been routinely monitored in our laboratory mostly by gas chromatographic-mass spectrometric methods. This study aimed to evaluate a more effective approach to simultaneously quantify these analytes (i.e., amphetamine, methamphetamine, 3,4-methylenedioxyamphetamine, 3,4-methylenedioxymethamphetamine (MDMA), morphine, codeine, 6-acetylmorphine, 6-acetylcodeine, ketamine and norketamine) in postmortem urine and blood specimens by liquid chromatography-tandem mass spectrometry (LC-MS-MS)...
July 18, 2017: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/28980330/the-fentanyl-family-a-distinguished-medical-history-tainted-by-abuse
#13
R B Raffa, J V Pergolizzi, J A LeQuang, R Taylor, S Colucci, M H Annabi
WHAT IS KNOWN AND OBJECTIVE: Beginning in the 1950s, a family of potent opioids was synthesized and developed (fentanyl and analogues). They continue to serve as valuable analgesic agents. But the recent spike and notoriety of their abuse has raised alarm, even calls for tighter control. We review the trajectory of these compounds. COMMENT: To rectify shortcomings of the then available opioid analgesics, an analogue family of compounds was synthesized having a piperidine ring (presumptive principal active moiety in morphine and meperidine)...
October 4, 2017: Journal of Clinical Pharmacy and Therapeutics
https://www.readbyqxmd.com/read/28971091/the-effects-of-perinatal-oxycodone-exposure-on-behavioral-outcome-in-a-rodent-model
#14
Thitinart Sithisarn, Sandra J Legan, Philip M Westgate, Melinda Wilson, Kristen Wellmann, Henrietta S Bada, Susan Barron
Opiate addiction is now a major public health problem. Perinatal insults and exposure to opiates such as morphine in utero are well known to affect development of the hypothalamic-pituitary-adrenal axis of the offspring adversely and are associated with a higher risk of developing neurobehavioral problems. Oxycodone is now one of the most frequently abused pain killers during pregnancy; however, limited data are available regarding whether and how perinatal oxycodone exposure (POE) alters neurobehavioral outcomes of the offspring...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28958601/ghrelin-receptor-antagonism-of-morphine-induced-conditioned-place-preference-and-behavioral-and-accumbens-dopaminergic-sensitization-in-rats
#15
Pavel Jerabek, Tereza Havlickova, Nina Puskina, Chrysostomos Charalambous, Marek Lapka, Petr Kacer, Magdalena Sustkova-Fiserova
An increasing number of studies over the past few years have demonstrated ghrelin's role in alcohol, cocaine and nicotine abuse. However, the role of ghrelin in opioid effects has rarely been examined. Recently we substantiated in rats that ghrelin growth hormone secretagogue receptors (GHS-R1A) appear to be involved in acute opioid-induced changes in the mesolimbic dopaminergic system associated with the reward processing. The aim of the present study was to ascertain whether a ghrelin antagonist (JMV2959) was able to inhibit morphine-induced biased conditioned place preference and challenge-morphine-induced accumbens dopaminergic sensitization and behavioral sensitization in adult male rats...
September 27, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28953194/guideline-recommended-vs-high-dose-long-term-opioid-therapy-for-chronic-noncancer-pain-is-associated-with-better-health-outcomes-data-from-a-representative-sample-of-the-german-population
#16
Winfried Häuser, Tino Schubert, Norbert Scherbaum, Thomas Tölle
Recent evidence-based guidelines for long-term opioid therapy (LTOT) for chronic noncancer pain (CNCP) have defined daily morphine equivalent doses (MEQ/d) that require particular caution. The recommendation for a threshold MEQ/d is based on North American studies that have demonstrated negative health outcomes associated with high-dose LTOT for CNCP. We have conducted a retrospective cross-sectional study using an anonymized German health claims database, including 4,028,618 persons insured by 69 German statutory health insurances, representative of age and sex for the German population in 2014...
October 31, 2017: Pain
https://www.readbyqxmd.com/read/28947930/mitragyna-speciosa-balancing-potential-medical-benefits-and-abuse
#17
EDITORIAL
Genevieve M Halpenny
Mitragyna speciosa, also known as kratom, has the potential meet the need for pain medications that lack the addictiveness and overdose risk of classical opioid analgesics, such as morphine. This need is urgent because opioid addiction and overdose deaths have risen throughout diverse segments of U.S. society. Some opioid addicts have found relief in kratom preparations. The use of kratom as an analgesic has been validated by historical accounts and contemporary pharmacological research. Although kratom is a promising source of analgesic candidates, it is a euphoriant with potential for both abuse and addiction...
September 14, 2017: ACS Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28939014/novel-endomorphin-analogs-are-more-potent-and-longer-lasting-analgesics-in-neuropathic-postoperative-inflammatory-and-visceral-pain-relative-to-morphine
#18
Amy K Feehan, Jenny Morgenweck, Xing Zhang, Ariel Amgott-Kwan, James E Zadina
Activation of the mu-opioid receptor provides the gold standard for pain relief, but a majority of opioids used clinically have adverse effects that have contributed to an epidemic of overdose deaths. We recently characterized mu-opioid receptor selective endomorphin (EM) analogs that provide potent antinociception with reduction or absence of a number of side effects of traditionally prescribed opioids including abuse liability, respiratory depression, motor impairment, tolerance, and inflammation [91]. The current study explores the effectiveness of these EM analogs relative to morphine in four major pain models by both intrathecal and intravenous administration in male, Sprague-Dawley rats and male CD-1 mice...
September 19, 2017: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/28917762/full-validation-of-a-method-for-the-determination-of-drugs-of-abuse-in-non-mineralized-dental-biofilm-using-liquid-chromatography-tandem-mass-spectrometry-and-application-to-postmortem-samples
#19
Kerstin Henkel, Markus J Altenburger, Volker Auwärter, Merja A Neukamm
Alternative matrices play a major role in postmortem forensic toxicology, especially if common matrices (like body fluids or hair) are not available. Incorporation of illicit and medicinal drugs into non-mineralized dental biofilm (plaque) seems likely but has not been investigated so far. Analysis of plaque could therefore extend the spectrum of potentially used matrices in postmortem toxicology. For this reason, a rapid, simple and sensitive method for the extraction, determination and quantification of ten drugs of abuse from plaque using liquid chromatography-tandem mass spectrometry (LC-MS/MS) was developed and fully validated...
January 1, 2018: Talanta
https://www.readbyqxmd.com/read/28916251/mk-801-but-not-naloxone-attenuates-high-dose-dextromethorphan-induced-convulsive-behavior-possible-involvement-of-the-glun2b-receptor
#20
Hai-Quyen Tran, Yoon Hee Chung, Eun-Joo Shin, The-Vinh Tran, Ji Hoon Jeong, Choon-Gon Jang, Seung-Yeol Nah, Kiyofumi Yamada, Toshitaka Nabeshima, Hyoung-Chun Kim
Dextromethorphan (DM) is a dextrorotatory isomer of levorphanol, a typical morphine-like opioid. When administered at supra-antitussive doses, DM produces psychotoxic and neurotoxic effects in humans. Although DM abuse has been well-documented, few studies have examined the effects of high-dose DM. The present study aimed to explore the effects of a single high dose of DM on mortality and seizure occurrence. After intraperitoneal administration with a high dose of DM (80mg/kg), Sprague-Dawley rats showed increased seizure occurrence and intensity...
November 1, 2017: Toxicology and Applied Pharmacology
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