keyword
MENU ▼
Read by QxMD icon Read
search

Opiates

keyword
https://www.readbyqxmd.com/read/28821664/differential-desensitization-observed-at-multiple-effectors-of-somatic-mu-opioid-receptors-underlies-sustained-agonist-mediated-inhibition-of-proopiomelanocortin-neuron-activity
#1
Philip D Fox, Shane T Hentges
Activation of somatic mu opioid receptors (MORs) in hypothalamic proopiomelanocortin (POMC) neurons leads to the activation of G-protein-coupled inward rectifier potassium (GIRK) channels and hyperpolarization, but in response to continued signaling, MORs undergo acute desensitization resulting in robust reduction in the peak GIRK current after minutes of agonist exposure. We hypothesized that the attenuation of the GIRK current would lead to a recovery of neuronal excitability whereby desensitization of the receptor would lead to a new steady-state of POMC neuron activity reflecting the sustained GIRK current observed after the initial decline from peak with continued agonist exposure...
August 7, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28820934/supramolecular-sensors-for-opiates-and-their-metabolites
#2
Elena G Shcherbakova, Ben Zhang, Samer Gozem, Tsuyoshi Minami, Peter Y Zavalij, Mariia Pushina, Lyle Isaacs, Pavel Anzenbacher
The present work develops a sensing approach for opiates using acyclic cucurbituril (aCBs) sensors comprising four glycouril units terminated on both ends with naphthalene fluorophore walls. The connectivity between the glycourils and the naphthalene rings largely defines the opening size of the cucurbituril cavity and its diameter. The large hydrophobic binding cavity is flexible and is able to adapt to guests of various size and topology. The recognition event between the aCBs and guests results in modification of the fluorescence of the terminal walls, a fluorescence response that can be used to sense the drugs of abuse morphine, heroin and oxycodone as well as their metabolites...
August 18, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28820799/regional-anesthesia-and-analgesia-after-surgery-in-icu
#3
Mathieu Capdevila, Séverin Ramin, Xavier Capdevila
PURPOSE OF REVIEW: The aim is to demonstrate that ICU physicians should play a pivotal role in developing regional anesthesia techniques that are underused in critically ill patients despite the proven facts in perioperative and long-term pain, organ dysfunction, and postsurgery patient health-related quality of life improvement. RECENT FINDINGS: Regional anesthesia and/or analgesia strategies in ICU reduce the surgical and trauma-stress response in surgical patients as well as complications incidence...
August 17, 2017: Current Opinion in Critical Care
https://www.readbyqxmd.com/read/28819234/transcriptome-of-neonatal-preb%C3%A3-tzinger-complex-neurones-in-dbx1-reporter-mice
#4
John A Hayes, Andrew Kottick, Maria Cristina D Picardo, Andrew D Halleran, Ronald D Smith, Gregory D Smith, Margaret S Saha, Christopher A Del Negro
We sequenced the transcriptome of brainstem interneurons in the specialized respiratory rhythmogenic site dubbed preBötzinger Complex (preBötC) from newborn mice. To distinguish molecular characteristics of the core oscillator we compared preBötC neurons derived from Dbx1-expressing progenitors that are respiratory rhythmogenic to neighbouring non-Dbx1-derived neurons, which support other respiratory and non-respiratory functions. Results in three categories are particularly salient. First, Dbx1 preBötC neurons express κ-opioid receptors in addition to μ-opioid receptors that heretofore have been associated with opiate respiratory depression, which may have clinical applications...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28818835/src-dependent-phosphorylation-of-%C3%AE-opioid-receptor-at-tyr-336-modulates-opiate-withdrawal
#5
Lei Zhang, Cherkaouia Kibaly, Yu-Jun Wang, Chi Xu, Kyu Young Song, Patrick W McGarrah, Horace H Loh, Jing-Gen Liu, Ping-Yee Law
Opiate withdrawal/negative reinforcement has been implicated as one of the mechanisms for the progression from impulsive to compulsive drug use. Increase in the intracellular cAMP level and protein kinase A (PKA) activities within the neurocircuitry of addiction has been a leading hypothesis for opiate addiction. This increase requires the phosphorylation of μ-opioid receptor (MOR) at Tyr(336) by Src after prolonged opiate treatment in vitro Here, we report that the Src-mediated MOR phosphorylation at Tyr(336) is a prerequisite for opiate withdrawal in mice...
August 17, 2017: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/28815276/determination-of-89-drugs-and-other-micropollutants-in-unfiltered-wastewater-and-freshwater-by-lc-ms-ms-an-alternative-sample-preparation-approach
#6
Alexandros G Asimakopoulos, Pranav Kannan, Sean Higgins, Kurunthachalam Kannan
A liquid chromatography-triple quadrupole-tandem mass spectrometry (LC-qQq-MS/MS) method was developed for simultaneous determination of 89 legal neuropsychiatric pharmaceuticals and illicit drugs (both parent compounds and metabolites) and other micropollutants in unfiltered wastewater and freshwater. The target chemicals fall under the classes of amphetamine-type stimulants, cocaine compounds, opiates and opioids, benzodiazepines, lysergic compounds, antipsychotics, anesthetics, antiepileptics, antidepressants, sympathomimetics, cannabinoids, blood thinners, antihistamines, β-blockers, caffeine derivatives, nicotine derivatives, z-drugs, new designer drugs, and Alzheimer medications...
August 16, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28814751/comparison-of-chronic-physical-and-emotional-social-defeat-stress-effects-on-mesocorticolimbic-circuit-activation-and-voluntary-consumption-of-morphine
#7
S E Cooper, M Kechner, D Caraballo-Pérez, S Kaska, A J Robison, M S Mazei-Robison
Chronic social defeat stress (CSDS) is a well-established rodent model of depression that induces persistent social avoidance. CSDS triggers molecular adaptations throughout the mesocorticolimbic reward circuit, including changes in the activity of dopamine neurons in the ventral tegmental area (VTA), that may also influence drug reward. One limitation of traditional, physical CSDS (PS) is that injury complicates the study of opiate drugs like morphine. Thus, we sought to characterize a variation of CSDS, termed emotional CSDS (ES), that eliminates this confound...
August 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28814263/acute-pain-management-in-hospitalized-children
#8
Ria Dancel, Edmund Allen Liles, Darren Fiore
BACKGROUND: Acute pain in hospitalized pediatric patients is prevalent. Recent shifts in the paradigm of pediatric acute pain management focus less on reliance on opioids, due to their adverse side effects and risk of dependence, and more on multimodal pain management. OBJECTIVE: We sought to review the most recent studies on acute pain management in hospitalized pediatric patients. METHODS: We searched the Cochrane Database and PubMed for articles published in the past five years regarding the treatment of acute pain in pediatric patients focusing on large randomized or quasi-randomized control trials, cohort trials, and meta-analyses...
August 16, 2017: Reviews on Recent Clinical Trials
https://www.readbyqxmd.com/read/28807904/no-clinically-relevant-drug-drug-interactions-between-methadone-or-buprenorphine-naloxone-and-anti-viral-combination-glecaprevir-and-pibrentasvir
#9
Matthew Kosloski, Weihan Zhao, Armen Asatryan, Jens Kort, Pierre Geoffroy, Wei Liu
The combination of glecaprevir (formerly ABT-493), a nonstructural (NS) protein 3/4A protease inhibitor, and pibrentasvir (formerly ABT-530), a NS5A protein inhibitor, is being developed as treatment for HCV genotype 1-6 infection. The pharmacokinetics, pharmacodynamics, safety, and tolerability of methadone or buprenorphine/naloxone when coadministered with the glecaprevir and pibrentasvir combination in HCV-negative subjects on stable opioid maintenance therapy were investigated in a Phase 1, single-center, two-arm, multiple-dose, open-label sequential study...
August 14, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28804788/pro-dopamine-regulator-kb220-to-balance-brain-reward-circuitry-in-reward-deficiency-syndrome-rds
#10
Kenneth Blum, Marcelo Febo, Lyle Fried, David Baron, Eric R Braverman, Kristina Dushaj, Mona Li, Zsolt Demetrovics, Rajendra D Badgaiyan
We are faced with a worldwide opiate/opioid epidemic that is devastating. According to the Centers for Disease Control and Prevention (CDC), at least 127 people, young and old, are dying every day in America due to narcotic overdose. The Food and Drug Administration (FDA) has approved Medication-Assisted Treatments (MATs) for opiate/opioids as well as alcohol and nicotine. The mechanism of action of most MATS favors either blocking of dopaminergic function or a form of Opiate Substitution Therapy (OST). These treatment options are adequate for short-term treatment of the symptoms of addiction and harm reduction but fail long-term to deal with the cause or lead to recovery...
2017: Journal of Reward Deficiency Syndrome and Addiction Science
https://www.readbyqxmd.com/read/28802938/impulse-control-and-related-disorders-in-parkinson-s-disease
#11
Daniel Weintraub, Daniel O Claassen
Impulse control disorders (ICDs), such as compulsive gambling, buying, sexual, and eating behaviors, are a serious and increasingly recognized complication in Parkinson's disease (PD), occurring in up to 20% of PD patients over the course of their illness. Related behaviors include punding (stereotyped, repetitive, purposeless behaviors), dopamine dysregulation syndrome (DDS) (compulsive medication overuse), and hobbyism (e.g., compulsive internet use, artistic endeavors, and writing). These disorders have a significant impact on quality of life and function, strain interpersonal relationships, and worsen caregiver burden, and are associated with significant psychiatric comorbidity...
2017: International Review of Neurobiology
https://www.readbyqxmd.com/read/28802093/clinical-aspects-of-opium-adulterated-with-lead-in-iran-a-review
#12
Samira Alinejad, Jan Aaseth, Mohammad Abdollahi, Hossein Hassanian-Moghaddam, Omid Mehrpour
Adulteration of drugs with poisonous substances during production or consumption has caused numerous health problems. Among contaminants that have the potential of producing poisonous effects are the heavy metals lead, arsenic and thallium that make up an important group of toxic substances. The emergence of these new health problems related to opioid abuse has precipitated this MiniReview on the status of the most hazardous and common opioid adulterants. In fact, adulterated opium is a major public health problem and can threaten the health of users...
August 12, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28798303/understanding-the-molecular-basis-of-agonist-antagonist-mechanism-of-human-mu-opioid-receptor-through-gaussian-accelerated-molecular-dynamics-method
#13
Yeng-Tseng Wang, Yang-Hsiang Chan
The most powerful analgesic and addictive properties of opiate alkaloids are mediated by the μ opioid receptor (MOR). The MOR has been extensively investigated as a drug target in the twentieth century, with numerous compounds of varying efficacy being identified. We employed molecular dynamics and Gaussian accelerated molecular dynamics techniques to identify the binding mechanisms of MORs to BU72 (agonist) and β-funaltrexamine (antagonist). Our approach theoretically suggests that the 34 residues (Lys209-Phe221 and Ile301-Cys321) of the MORs were the key regions enabling the two compounds to bind to the active site of the MORs...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28795846/a-novel-non-opioid-protocol-for-medically-supervised-opioid-withdrawal-and-transition-to-antagonist-treatment
#14
Gregory Rudolf, Jim Walsh, Abigail Plawman, Paul Gianutsos, William Alto, Lloyd Mancl, Vania Rudolf
BACKGROUND: The clinical feasibility of a novel non-opioid and benzodiazepine-free protocol was assessed for the treatment of medically supervised opioid withdrawal and transition to subsequent relapse prevention strategies. METHODS: A retrospective chart review of DSM-IV diagnosed opioid-dependent patients admitted for inpatient medically supervised withdrawal examined 84 subjects (52 males, 32 females) treated with a 4-day protocol of scheduled tizanidine, hydroxyzine, and gabapentin...
August 10, 2017: American Journal of Drug and Alcohol Abuse
https://www.readbyqxmd.com/read/28793780/iatrogenic-opioid-withdrawal-in-critically-ill-patients-a-review-of-assessment-tools-and-management
#15
Ada W Chiu, Sofia Contreras, Sangeeta Mehta, Jennifer Korman, Marc M Perreault, David R Williamson, Lisa D Burry
OBJECTIVE: To (1) provide an overview of the epidemiology, clinical presentation, and risk factors of iatrogenic opioid withdrawal in critically ill patients and (2) conduct a literature review of assessment and management of iatrogenic opioid withdrawal in critically ill patients. DATA SOURCES: We searched MEDLINE (1946-June 2017), EMBASE (1974-June 2017), and CINAHL (1982-June 2017) with the terms opioid withdrawal, opioid, opiate, critical care, critically ill, assessment tool, scale, taper, weaning, and management...
August 1, 2017: Annals of Pharmacotherapy
https://www.readbyqxmd.com/read/28792290/pearls-and-pitfalls-for-prescribing-opioids-in-a-climate-of-increased-provider-scrutiny
#16
Joanna Gedzior, Arlen Kwong
In August 2016, U.S. Surgeon General Vivek Murthy, MD, MBA, issued a letter to healthcare providers requesting aid in addressing "an urgent health crisis facing America: the opioid epidemic." In this article, we address some of the more poignant challenges that surface in treating patients with opiate addiction. We provide an outline of recommendations from the leading medical organizations to educate primary care providers on how to navigate patients to decreased or discontinued medication loads.
March 2017: International Journal of Psychiatry in Medicine
https://www.readbyqxmd.com/read/28780196/can-we-reduce-morphine-use-in-elderly-proximal-femoral-fracture-patients-using-a-fascia-iliac-block
#17
Al-Amin M Kassam, Anthony T Gough, Joanna Davies, Rathan Yarlagadda
Proximal femoral fractures are becoming increasingly common with an ageing population. Many patients have multiple comorbidities increasing their risk of opiate complications. 40 consecutive patients presenting with a proximal femoral fracture to a trauma centre in the UK were given either a Fascia Iliaca Block (FIB) with oral analgesia or just oral analgesia to control their pre-operative pain. Numeric pain scores and morphine consumption were used as outcome measures. Patients receiving a FIB had significant reduction in their pain scores compared to patients only receiving oral pain relief...
August 2, 2017: Geriatric Nursing
https://www.readbyqxmd.com/read/28776146/a-focused-addiction-curriculum-and-its-impact-on-student-knowledge-attitudes-and-confidence-in-the-treatment-of-patients-with-substance-use
#18
Robert J Feeley, David T Moore, Kirsten Wilkins, Brian Fuehrlein
BACKGROUND: Assessment of attitudes towards addiction in medical students has largely gone unexplored. This study examines the impact of a supplemental substance use disorder curriculum in the psychiatry clerkship on medical student attitudes towards addiction. METHODS: The curriculum was only administered to students at one clerkship site. Subsequently, medical students were surveyed across all sites regarding their attitudes towards addiction. RESULTS: The survey response rate was 37...
August 3, 2017: Academic Psychiatry
https://www.readbyqxmd.com/read/28768409/opiates-and-plasticity-in-the-ventral-tegmental-area
#19
Ludovic D Langlois, Fereshteh S Nugent
Opioids are among the most effective pain relievers; however, their abuse has been on the rise worldwide evident from an alarming increase in accidental opioid overdoses. This demands for an urgent increase in scientific endeavors for better understanding of main cellular mechanisms and circuits involved in opiate addiction. Preclinical studies strongly suggest that memories associated with positive and negative opioid experiences are critical in promoting compulsive opiate-seeking and opiate-taking behaviors, and relapse...
August 16, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28765624/metacognitive-deficiency-in-a-perceptual-but-not-a-memory-task-in-methadone-maintenance-patients
#20
Saeedeh Sadeghi, Hamed Ekhtiari, Bahador Bahrami, Majid Nili Ahmadabadi
Drug addiction has been associated with lack of insight into one's own abilities. However, the scope of metacognition impairment among drug users in general and opiate dependent individuals in particular is not fully understood. Investigating the impairments of metacognitive ability in Substance Dependent Individuals (SDIs) in different cognitive tasks could contribute to the ongoing debate over whether metacognition has domain-general or domain-specific neural substrates. We compared metacognitive self-monitoring ability of a group of SDIs during methadone maintenance treatment (n = 23) with a control group (n = 24) in a memory and a visual perceptual task...
August 1, 2017: Scientific Reports
keyword
keyword
1416
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"