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Opioid withdrawal

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https://www.readbyqxmd.com/read/28093335/intracoerulear-microinjection-of-orexin-a-induces-morphine-withdrawal-like-signs-in-rats
#1
Masoumeh Ghaemi-Jandabi, Hossein Azizi, S Mohammad Ahmadi-Soleimani, Saeed Semnanian
Orexin (hypocretin) neuropeptides play a pivotal role in expression of opioid withdrawal signs. Hypothalamic orexinergic neurons provide dense afferents for the nucleus locus coeruleus (LC). Somatic signs of opioid withdrawal are associated with the enhanced activity of LC neurons. In addition, intra-LC administration of orexin-A leads to the hyperactivity of LC neurons. The present study was an attempt to investigate whether intra-LC microinjection of orexin-A induces morphine withdrawal-like signs in both morphine dependent and control rats...
January 13, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28092651/long-lasting-antinociceptive-effects-of-green-light-in-acute-and-chronic-pain-in-rats
#2
Mohab M Ibrahim, Amol Patwardhan, Kerry B Gilbraith, Aubin Moutal, Xiaofang Yang, Lindsey A Chew, Tally Largent-Milnes, T Philip Malan, Todd W Vanderah, Frank Porreca, Rajesh Khanna
Treatments for chronic pain are inadequate, and new options are needed. Nonpharmaceutical approaches are especially attractive with many potential advantages including safety. Light therapy has been suggested to be beneficial in certain medical conditions such as depression, but this approach remains to be explored for modulation of pain. We investigated the effects of light-emitting diodes (LEDs), in the visible spectrum, on acute sensory thresholds in naive rats as well as in experimental neuropathic pain...
February 2017: Pain
https://www.readbyqxmd.com/read/28088741/prevalence-and-correlates-of-fentanyl-contaminated-heroin-exposure-among-young-adults-who-use-prescription-opioids-non-medically
#3
Alexandria Macmadu, Jennifer J Carroll, Scott E Hadland, Traci C Green, Brandon D L Marshall
BACKGROUND: The rate of overdose deaths caused by fentanyl-contaminated heroin (FCH) use is increasing rapidly in the United States. We examined risk factors for exposure to FCH and experiences with FCH use among young adult non-medical prescription opioids (NMPO) users. METHODS: We analyzed data from the Rhode Island Young Adult Prescription Drug Study (RAPiDS), which enrolled young adults aged 18 to 29 reporting prior 30day NMPO use between January 2015 and February 2016...
January 6, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/28086837/systemic-and-individual-factors-in-the-buprenorphine-treatment-seeking-process-a-qualitative-study
#4
Valerie M Hewell, Angel R Vasquez, Inna D Rivkin
BACKGROUND: Opioid use is a significant problem in Alaska. Medication-assisted treatment for opioid use, including buprenorphine, reduces withdrawal symptoms and the harm associated with opioid abuse. Understanding consumers' treatment-seeking process is important for addressing barriers to treatment, facilitating effective service utilization, and informing policy. METHODS: To understand treatment-seeking behavior, we examined the attitudes, perceptions, and knowledge of those who would benefit from the medication-assisted treatment (MAT) buprenorphine...
January 11, 2017: Substance Abuse Treatment, Prevention, and Policy
https://www.readbyqxmd.com/read/28081197/morphine-withdrawal-modifies-prion-protein-expression-in-rat-hippocampus
#5
Vincenzo Mattei, Stefano Martellucci, Francesca Santilli, Valeria Manganelli, Tina Garofalo, Niccolò Candelise, Alessandra Caruso, Maurizio Sorice, Sergio Scaccianoce, Roberta Misasi
The hippocampus is a vulnerable brain structure susceptible to damage during aging and chronic stress. Repeated exposure to opioids may alter the brain so that it functions normally when the drugs are present, thus, a prolonged withdrawal might lead to homeostatic changes headed for the restoration of the physiological state. Abuse of morphine may lead to Reacting Oxygen Species-induced neurodegeneration and apoptosis. It has been proposed that during morphine withdrawal, stress responses might be responsible, at least in part, for long-term changes of hippocampal plasticity...
2017: PloS One
https://www.readbyqxmd.com/read/28079573/medically-assisted-withdrawal-detoxification-considering-the-mother-infant-dyad
#6
Hendrée E Jones, Mishka Terplan, Marjorie Meyer
Recommendations for opioid agonist pharmacotherapy and against medically assisted withdrawal were based upon early reports that associated withdrawal with maternal relapse and fetal demise. Data from recent case series have called these recommendations into question. Although these data do not support an association between medically assisted withdrawal and fetal demise, relapse remains a significant clinical concern with reported rates ranging from 17% to 96% (average 48%). Given the high loss to follow-up in these studies, the actual relapse rate is likely even greater...
January 11, 2017: Journal of Addiction Medicine
https://www.readbyqxmd.com/read/28078167/a-novel-strategy-for-attenuating-opioid-withdrawal-in-neonates
#7
Giovanni C Santoro, Samarth Shukla, Krishna Patel, Jakub Kaczmarzyk, Stergiani Agorastos, Sandra Scherrer, Yoon Young Choi, Christina Veith, Joseph Carrion, Rebecca Silverman, Danielle Mullin, Mohamed Ahmed, Wynne K Schiffer, Jonathan D Brodie, Stephen L Dewey
The rate of Neonatal Abstinence Syndrome (NAS) has drastically increased over the past decade. The average hospital expense per NAS patient has tripled, while the number of babies born to opioid-dependent mothers has increased to 5 in 1000 births. Current treatment options are limited to opioid replacement and tapering. Consequently, we examined the efficacy of prenatal, low-dose and short-term vigabatrin (γ-vinyl GABA, GVG) exposure for attenuating these symptoms as well as the metabolic changes observed in the brains of these animals upon reaching adolescence...
August 2016: Journal of Addiction Research & Therapy
https://www.readbyqxmd.com/read/28075108/alpha-adrenergic-agonists-for-the-management-of-opioid-withdrawal
#8
Matthew Royall, Kathryn K Garner, Susan R Hill, Matthew Barnes
No abstract text is available yet for this article.
January 1, 2017: American Family Physician
https://www.readbyqxmd.com/read/28074831/rgs9-2-modulates-responses-to-oxycodone-in-pain-free-and-chronic-pain-states
#9
Sevasti Gaspari, Valeria Cogliani, Lefteris Manouras, Ethan M Anderson, Vasiliki Mitsi, Kleopatra Avrampou, Fiona B Carr, Venetia Zachariou
Regulator of G protein signalling 9-2 (RGS9-2) is a striatal enriched signal transduction modulator, known to play a critical role in the development of addiction-related behaviours following exposure to psychostimulants or opioids. RGS9-2 controls the function of several GPCRs, including dopamine and mu opioid (MOR) receptors. We previously showed that RGS9-2 complexes negatively control morphine analgesia, and promote the development of morphine tolerance. In contrast, RGS9-2 positively modulates the actions of other opioid analgesics, such as fentanyl and methadone...
January 11, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28073819/the-opioid-epidemic-and-neonatal-abstinence-syndrome-in-the-usa-a-review-of-the-continuum-of-care
#10
Jason R Pryor, Faouzi I Maalouf, Elizabeth E Krans, Robert E Schumacher, William O Cooper, Stephen W Patrick
As the prescription opioid epidemic grew in the USA, its impact extended to pregnant women and their infants. This review summarises how increasing rates of neonatal abstinence syndrome resulted in a need to improve care to pregnant women and opioid-exposed infants. We discuss the variations in care delivery with particular emphasis on screening at-risk mothers, scoring systems for neonatal drug withdrawal, type and duration of pharmacotherapy, and discharge safety.
January 10, 2017: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://www.readbyqxmd.com/read/28073687/adverse-event-detection-using-the-fda-post-marketing-drug-safety-surveillance-system-cardiotoxicity-associated-with-loperamide-abuse-and-misuse
#11
Kimberley A Swank, Eileen Wu, Cindy Kortepeter, Jana McAninch, Robert L Levin
OBJECTIVE: The purpose of this investigation was to identify and characterize post-marketing reports of cardiotoxicity, including torsades de pointes (TdP), associated with loperamide use. METHODS: We searched the U.S. Food and Drug Administration Adverse Event Reporting System (FAERS) database for post-marketing reports of serious cardiac adverse events associated with loperamide use from December 28, 1976 (U.S. drug approval date), through December 14, 2015. We also conducted a Pubmed and Google Scholar search to identify additional published reports of cardiotoxicity associated with loperamide in the medical literature through February 11, 2016...
January 7, 2017: Journal of the American Pharmacists Association: JAPhA
https://www.readbyqxmd.com/read/28072812/is-kratom-the-new-legal-high-on-the-block-the-case-of-an-emerging-opioid-receptor-agonist-with-substance-abuse-potential
#12
George C Chang-Chien, Charles A Odonkor, Prin Amorapanth
Kratom is an unscheduled opioid receptor agonist that comes in the form of dietary supplements currently being abused by chronic pain patients on prescription opioids. Active alkaloids isolated from kratom such as mitragynine and 7-hydroxymitragynine are thought to act on mu- and delta-opioid receptors as well as alpha-2 adrenergic and 5-HT2A receptors. Animal studies suggest that kratom may be more potent than morphine. Consequently, kratom consumption produces analgesic and euphoric feelings among users. In particular, some chronic pain patients on opioids take kratom to counteract the effects of opioid withdrawal...
January 2017: Pain Physician
https://www.readbyqxmd.com/read/28072811/evaluation-of-the-ototoxicity-potential-of-once-daily-single-entity-hydrocodone-in-patients-with-chronic-pain-results-of-two-phase-3-clinical-studies
#13
Kathleen Campbell, J Walter Kutz, Angela Shoup, Warren Wen, Shau Yu Lynch, Ellie He, Steven R Ripa
BACKGROUND: Use/misuse of the opioid combination hydrocodone-acetaminophen has been associated with permanent hearing loss. Although reports have been rare, this potential effect can have significant detrimental effect on patients' overall quality of life. To date, the ototoxic effect of hydrocodone alone has not been systematically investigated. OBJECTIVE: In this report, we aimed to evaluate the potential ototoxicity of a novel, single-entity, once-daily, extended-release hydrocodone tablet (Hysingla® ER; HYD)...
January 2017: Pain Physician
https://www.readbyqxmd.com/read/28069860/in-opioid-withdrawal-with-no-help-in-sight
#14
Travis N Rieder
A patient receives prescription opioids after an accident-and no support from his physicians as he weans himself off.
January 1, 2017: Health Affairs
https://www.readbyqxmd.com/read/28061017/feasibility-and-safety-of-extended-release-naltrexone-treatment-of-opioid-and-alcohol-use-disorder-in-hiv-clinics-a-pilot-feasibility-randomized-trial
#15
P Todd Korthuis, Paula J Lum, Pamela Vergara-Rodriguez, Keith Ahamad, Evan Wood, Lynn E Kunkel, Neal L Oden, Robert Lindblad, James L Sorensen, Virgilio Arenas, Doan Ha, Raul N Mandler, Dennis Mccarty
BACKGROUND AND AIMS: HIV-infected persons with substance use disorders are least likely to benefit from advances in HIV treatment. Integration of extended-release naltrexone (XR-NTX) into HIV clinics may increase engagement in the HIV care continuum by decreasing substance use. We aimed to compare 1) XR-NTX treatment initiation, 2) retention, and 3) safety of XR-NTX versus treatment as usual (TAU) for treating opioid use disorder (OUD) and/or alcohol use disorder (AUD) in HIV clinics...
January 6, 2017: Addiction
https://www.readbyqxmd.com/read/28059433/a-12-week-extension-study-to-assess-the-safety-and-tolerability-of-naloxegol-in-patients-with-noncancer-pain-and-opioid-induced-constipation
#16
Lynn Webster, Raj Tummala, Ulysses Diva, Jaakko Lappalainen
OBJECTIVE: To compare the long-term safety and tolerability of naloxegol with placebo in patients with opioid-induced constipation (OIC) and noncancer pain. DESIGN: Twelve-week, multicenter, randomized, double-blind, parallel-group phase 3 extension study (KODIAC-07, NCT01395524). SETTING: Clinical investigation centers in the United States. PATIENTS: Adult outpatients (N = 302) with confirmed OIC who had completed a 12-week pivotal phase 3 study (KODIAC-04, NCT01309841)...
November 2016: Journal of Opioid Management
https://www.readbyqxmd.com/read/28051842/the-use-of-auricular-acupuncture-in-opioid-use-disorder-a-systematic-literature-review
#17
REVIEW
Tanya E Baker, Grace Chang
BACKGROUND AND OBJECTIVES: Opioid use disorder (OUD) is a chronic disease with significant personal, societal, and public health consequences. Even for the minority who receive the most effective evidence-based treatments, morbidity, and mortality remain significant. These facts, along with the recovery movement calling for individualized, holistic, culturally sensitive care, have led to the exploration of adjunctive interventions including acupuncture. Despite hundreds of international trials, however, there is a lack of consensus regarding its efficacy in OUD due in large part to methodological issues of trials to date...
December 2016: American Journal on Addictions
https://www.readbyqxmd.com/read/28050629/antireward-compulsivity-and-addiction-seminal-contributions-of-dr-athina-markou-to-motivational-dysregulation-in-addiction
#18
REVIEW
George F Koob
RATIONALE AND OBJECTIVES: Addiction is defined as a chronically relapsing disorder characterized by compulsive drug seeking that is hypothesized to derive from multiple sources of motivational dysregulation. METHODS AND RESULTS: Dr. Athina Markou made seminal contributions to our understanding of the neurobiology of addiction with her studies on the dysregulation of reward function using animal models with construct validity. Repeated overstimulation of the reward systems with drugs of abuse decreases reward function, characterized by brain stimulation reward and presumbably reflecting dysphoria-like states...
January 3, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28042019/endomorphin-2-analogs-with-c-terminal-esterification-produce-potent-systemic-antinociception-with-reduced-tolerance-and-gastrointestinal-side-effects
#19
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/28028605/neuropeptide-systems-and-new-treatments-for-nicotine-addiction
#20
REVIEW
Adriaan W Bruijnzeel
RATIONALE: The mildly euphoric and cognitive enhancing effects of nicotine play a role in the initiation of smoking, while dysphoria and anxiety associated with smoking cessation contribute to relapse. After the acute withdrawal phase, smoking cues, a few cigarettes (i.e., lapse), and stressors can cause relapse. Human and animal studies have shown that neuropeptides play a critical role in nicotine addiction. OBJECTIVES: The goal of this paper is to describe the role of neuropeptide systems in the initiation of nicotine intake, nicotine withdrawal, and the reinstatement of extinguished nicotine seeking...
December 28, 2016: Psychopharmacology
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