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https://www.readbyqxmd.com/read/29149613/tuning-biased-gpcr-signaling-for-physiological-gain
#1
Skylar Spangler, Michael R Bruchas
Effective and safe doses of opiate painkillers, like morphine, can be limited by respiratory depression. Schmid et al. (2017) now present a quantitative method to design ligands and correlate GPCR signaling bias to the dose separation between therapeutic and adverse effects in animals.
November 16, 2017: Cell
https://www.readbyqxmd.com/read/29148050/the-pharmacokinetics-of-morphine-and-codeine-in-human-plasma-and-urine-after-oral-administration-of-qiangli-pipa-syrup
#2
Bin-Bin Guo, Yu-Qiao Zhang, Sheng-Feng Wang, Jin-Song Ding, Wen-Hu Zhou
Papaveris pericarpium, a natural source of morphine and codeine, is the principal active component in many antitussive traditional Chinese medicines. We herein report the first PK study of papaveris pericarpium in human plasma and urine following oral administration of single (15, 30, 60 mL) and multiple dose (15 mL) of Qiangli Pipa Syrup (MOR 0.1 mg/mL, COD 0.028 mg/mL) by monitoring morphine and codeine using a HPLC-MS/MS method. Their Tmax and t1/2 values are independent of dosages, while the AUC0-t linearly increased with higher dosages, indicating linear PK characteristics...
November 17, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/29147570/management-of-an-acute-catecholamine-induced-cardiomyopathy-and-circulatory-collapse-a-multidisciplinary-approach
#3
R T Casey, B G Challis, D Pitfield, R M Mahroof, N Jamieson, C J Bhagra, A Vuylsteke, S J Pettit, K C Chatterjee
A phaeochromocytoma (PC) is a rare, catecholamine-secreting neuroendocrine tumour arising from the adrenal medulla. Presenting symptoms of this rare tumour are highly variable but life-threatening multiorgan dysfunction can occur secondary to catecholamine-induced hypertension or hypotension and subsequent cardiovascular collapse. High levels of circulating catecholamines can induce an acute stress cardiomyopathy, also known as Takotsubo cardiomyopathy. Recent studies have focused on early diagnosis and estimation of the prevalence of acute stress cardiomyopathy in patients with PC, but very little is reported about management of these complex cases...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/29145067/role-of-thalamic-ventral-posterolateral-nucleus-histamine-h2-and-opiate-receptors-in-modulation-of-formalin-induced-muscle-pain-in-rats
#4
Hamid Ghasemi, Esmaeal Tamaddonfard, Farhad Soltanalinejad
BACKGROUND: Histamine and opiate systems contribute to supraspinal processing of pain. In the present study, we investigated the effects of microinjection of histamine and agonists and antagonists of histamine H2 and opiate receptors into the thalamic ventral posterolateral nucleus on muscle pain in rats. METHODS: The thalamic ventral posterolateral nuclei were bilaterally implanted with two guide cannulas. Muscle pain was induced by intramuscular injection of a diluted formalin solution (2...
May 8, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/29141653/test-of-a-workforce-development-intervention-to-expand-opioid-use-disorder-treatment-pharmacotherapy-prescribers-protocol-for-a-cluster-randomized-trial
#5
Todd Molfenter, Hannah K Knudsen, Randy Brown, Nora Jacobson, Julie Horst, Mark Van Etten, Jee-Seon Kim, Eric Haram, Elizabeth Collier, Sanford Starr, Alexander Toy, Lynn Madden
BACKGROUND: Overdoses due to non-medical use of prescription opioids and other opiates have become the leading cause of accidental deaths in the USA. Buprenorphine and extended-release naltrexone are key evidence-based pharmacotherapies available to addiction treatment providers to address opioid use disorder (OUD) and prevent overdose deaths. Treatment organizations' efforts to provide these pharmacotherapies have, however, been stymied by limited success in recruiting providers (physicians, nurse practitioners, and physician assistants) to prescribe these medications...
November 15, 2017: Implementation Science: IS
https://www.readbyqxmd.com/read/29141650/neuropsychological-function-is-improved-among-opioid-dependent-adults-who-adhere-to-opiate-agonist-treatment-with-buprenorphine-naloxone-a-preliminary-study
#6
Travis M Scott, Monica Rivera Mindt, Chinazo O Cunningham, Franchesca Arias, Kelly Coulehan, Aprille Mangalonzo, Pat Olsen, Julia H Arnsten
BACKGROUND: Among persons with opioid use disorder (OUD), neuropsychological dysfunction is associated with depression, and better neuropsychological function is associated with opioid abstinence. However, it is unknown whether depressive symptomatology or adherence to opiate agonist treatment are associated with neuropsychological change over time. METHODS: We recruited 20 buprenorphine/naloxone-treated adults with OUD (M Age = 45.2 years [SD = 8.1]; 25% female) to complete baseline and 6 month visits containing a neuropsychological test battery and self-reported measures of depressive symptomatology and medication adherence...
November 15, 2017: Substance Abuse Treatment, Prevention, and Policy
https://www.readbyqxmd.com/read/29120281/psychological-distress-is-correlated-with-erectile-dysfunction-among-patients-receiving-methadone-maintenance-in-taiwan
#7
Ching-Ming Cheng, Yen-Chin Lin, Kun-Chia Chang
OBJECTIVE: Although erectile dysfunction (ED) is prevalent in patients receiving long-term methadone maintenance, studies in Chinese culture exploring the relationship between psychological distress and ED are scarce. METHODS: One hundred eighty-seven male patients in methadone maintenance treatment were assessed in this cross-sectional study. Instruments included the Opiate Treatment Index (OTI) to evaluate the health-related consequences of methadone treatment and the Chinese Health Questionnaire-12 (CHQ-12) for the assessment of psychological distress, respectively...
November 9, 2017: Journal of Dual Diagnosis
https://www.readbyqxmd.com/read/29117206/cannabis-alcohol-and-fatal-road-accidents
#8
Jean-Louis Martin, Blandine Gadegbeku, Dan Wu, Vivian Viallon, Bernard Laumon
INTRODUCTION: This research aims to estimate the relative risks of responsibility for a fatal accident linked to driving under the influence of cannabis or alcohol, the prevalence of these influences among drivers and the corresponding attributable risk ratios. A secondary goal is to estimate the same items for three other groups of illicit drugs (amphetamines, cocaine and opiates), and to compare the results to a similar study carried out in France between 2001 and 2003. METHODOLOGY: Police procedures for fatal accidents in Metropolitan France during 2011 were analyzed and 300 characteristics encoded to provide a database of 4,059 drivers...
2017: PloS One
https://www.readbyqxmd.com/read/29112770/interactive-effects-of-morphine-and-dopamine-receptor-agonists-on-spatial-recognition-memory-in-mice
#9
Yanmei Chen, Yu Fu, Yingjie Ann, Jianhong Wang, Jichuan Zhang
Both opiates and dopamine play important roles in learning and memory. Although synergistic action between these two neurotransmitters has been found, their functional roles remain unclear. Here, low dose morphine (2.5 mg/kg) and low dose dopamine receptor agonists (apomorphine: 0.05 mg/kg; SKF38393: 0.01 mg/kg; bromocriptine: 0.05 mg/kg), which have no effects on spatial recognition memory, were injected intraperitoneally into mice 30 min before a memory test in a two-trial recognition Y-maze. The Y-maze is based on the innate tendency of rodents to explore novel environments and is therefore suitable for exploring the effects of morphine on learning and memory...
November 7, 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/29111854/the-effect-of-morphine-upon-dna-methylation-in-ten-regions-of-the-rat-brain
#10
Timothy M Barrow, Hyang-Min Byun, Xinyan Li, Chris Smart, Yong-Xiang Wang, Yacong Zhang, Andrea A Baccarelli, Liqiong Guo
Morphine is one of the most effective analgesics in medicine. However, its use is associated with the development of tolerance and dependence. Recent studies demonstrating epigenetic changes in the brain after exposure to opiates have provided insight into mechanisms possibly underlying addiction. In this study, we sought to identify epigenetic changes in ten regions of the rat brain following acute and chronic morphine exposure. We analyzed DNA methylation of six nuclear-encoded genes implicated in brain function (Bdnf, Comt, Il1b, Il6, Nr3c1, and Tnf) and three mitochondrially-encoded genes (Mtco1, Mtco2, and Mtco3), and measured global 5-methylcytosine (5mC) and 5-hydroxymethylcytosine (5hmC) levels...
November 7, 2017: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/29111148/effects-of-opioid-and-nonopioid-analgesics-on-canine-wheal-formation-and-cultured-human-mast-cell-degranulation
#11
Eric Schmidt-Rondon, Zhenping Wang, Shelle A Malkmus, Anna Di Nardo, Keith Hildebrand, Linda Page, Tony L Yaksh
Mast cell (MC) degranulation has been implicated in the side effect profile of a variety of clinically useful agents. Thus, after intrathecal delivery, formation of space-occupying, meningeally-derived masses may be related to local MC degranulation. We systematically characterized degranulating effects of opioid and nonopioid analgesics on cutaneous flares in the dog and in primary human MC (hMC) cultures. METHODS: Dogs were anesthetized with IV propofol and received intradermal (ID) injections (50μL)...
October 27, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29108963/influences-of-social-reward-experience-on-behavioral-responses-to-drugs-of-abuse-review-of-shared-and-divergent-neural-plasticity-mechanisms-for-sexual-reward-and-drugs-of-abuse
#12
REVIEW
Lauren N Beloate, Lique M Coolen
Different factors influence the development of drug addiction in humans, including social reward experiences. In animals, experience with social rewards, such as sexual behavior, pair bonding, social and environmental enrichment, can be protective. However, loss or lack of social rewards can lead to a vulnerability to drug-seeking behavior. The effects of social reward experience on drug-seeking behavior are associated with changes in the neural pathways that control drug-related behavior. This review will provide an introduction and overview of the mesolimbic pathway and the influence of social reward experience on drug-seeking behavior in rodents...
November 3, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/29104320/earning-spending-and-drug-use-in-a-therapeutic-workplace
#13
Shrinidhi Subramaniam, Anthony DeFulio, Brantley P Jarvis, August F Holtyn, Kenneth Silverman
Drug addiction is a chronic, relapsing health problem that is associated with the degree to which individuals choose small, immediate monetary outcomes over larger, delayed outcomes. This study was a secondary analysis exploring the relation between financial choices and drug use in opioid-dependent adults in a therapeutic workplace intervention. Sixty-seven participants were randomly assigned to a condition in which access to paid job training was contingent upon naltrexone adherence (N = 35) or independent of naltrexone adherence (N = 32)...
June 2017: Psychological Record
https://www.readbyqxmd.com/read/29103663/takotsubo-cardiomyopathy-precipitated-by-opiate-withdrawal
#14
Peter C Olson, Vratika Agarwal, James C Lafferty, Soad Bekheit
INTRODUCTION: Takotsubo Cardiomyopathy is a transient non-ischemic cardiomyopathy usually characterized by apical ballooning of the left ventricle, with electrocardiographic changes and enzyme release, without evidence of obstructive coronary artery disease. Typically seen in stress induced situations, in post-menopausal females, this condition may have a predilection for patients with dependency disorders. CASE: The following is a case in which Takotsubo Cardiomyopathy was induced by withdrawal from opiate medications...
November 2, 2017: Heart & Lung: the Journal of Critical Care
https://www.readbyqxmd.com/read/29101957/anesthesia-for-colonoscopy-and-lower-endoscopic-procedures
#15
REVIEW
John Michael Trummel, Vinay Chandrasekhara, Michael L Kochman
Demand for anesthesiologist-assisted sedation is expanding for gastrointestinal lower endoscopic procedures and may add to the cost of these procedures. Most lower endoscopy can be accomplished with either no, moderate, or deep sedation; general anesthesia and active airway management are rarely needed. Propofol-based sedation has advantages in terms of satisfaction and recovery over other modalities, but moderate sedation using benzodiazepines and opiates work well for low-risk patients and procedures. No sedation for routine colonoscopy works well for selected patients and eliminates sedation-related risks...
December 2017: Anesthesiology Clinics
https://www.readbyqxmd.com/read/29100261/a-practical-approach-to-neonatal-opiate-withdrawal-syndrome
#16
Lori A Devlin, Jonathan M Davis
No abstract text is available yet for this article.
November 3, 2017: American Journal of Perinatology
https://www.readbyqxmd.com/read/29098677/traditional-chinese-medicine-tcm-therapy
#17
Li-Jun Xiao, Ran Tao
Traditional Chinese Medicine(TCM) has been utilized in China for more than 2,000 years, and it has been practiced in treatment of substance addiction and non-substance addictions. TCM have efficacy in the rehabilitation of abnormal physical problems induced by chronic drug use, including improving immune function, increasing working memory, and protecting against neurological disorders. Given that TCM is potentially effective in the prevention of relapse, it has been suggested that TCM may be the ideal choice in the future for the treatment of opiate addiction...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29098673/biochemical-diagnosis-in-substance-and-non-substance-addiction
#18
Wenwen Shen, Huifeng Liu, Xiaohu Xie, Haixiong Liu, Wenhua Zhou
An optimal biochemical marker for addiction would be some easily traced molecules in body specimens, which indicates indulgent addictive behaviors, or susceptibility to certain addictive stimuli. In this chapter, we discussed existing literature about possible biomarkers, and classified them into three categories: origin forms and metabolites of substances, markers from biochemical responses to certain addiction, and genetic and epigenetic biomarkers suggesting susceptibility to addiction. In every category, we examined studies concerning certain type of addiction one by one, with focuses mainly on opiates, psychostimulants, and pathological gambling...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29092867/subsyndromal-delirium-and-institutionalization-among-patients-with-critical-illness
#19
Nathan E Brummel, Leanne M Boehm, Timothy D Girard, Pratik P Pandharipande, James C Jackson, Christopher G Hughes, Mayur B Patel, Jin H Han, Eduard E Vasilevskis, Jennifer L Thompson, Rameela Chandrasekhar, Gordon R Bernard, Robert S Dittus, E Wesley Ely
BACKGROUND: The prognostic importance of subsyndromal delirium is unknown. OBJECTIVE: To test whether duration of subsyndromal delirium is independently associated with institutionalization. METHODS: The Confusion Assessment Method for the Intensive Care Unit (CAM-ICU) was used twice daily to assess for subsyndromal delirium in patients with respiratory failure or shock. Delirium was considered present if the assessment was positive. Subsyndromal delirium was considered present if the assessment was negative but the patient exhibited any CAM-ICU features...
November 2017: American Journal of Critical Care: An Official Publication, American Association of Critical-Care Nurses
https://www.readbyqxmd.com/read/29091289/a-risk-score-to-predict-the-development-of-hepatic-encephalopathy-in-a-population-based-cohort-of-patients-with-cirrhosis
#20
Elliot B Tapper, Neehar Parikh, Neil Sengupta, Jessica Mellinger, David Ratz, Anna S Lok, Grace L Su
Over 40% of patients with cirrhosis will develop hepatic encephalopathy (HE). HE is associated with decreased survival, falls, motor vehicle accidents, and frequent hospitalization. Accordingly, we aimed to develop a tool to risk-stratify patients for HE development. We studied a population-based cohort of all patients with cirrhosis without baseline HE (N=1,979) from the Veterans Administration from Michigan, Indiana, and Ohio (1/1/2005-12/31/10) using demographic, clinical, laboratory, and pharmacy data. The primary outcome was the development of HE...
November 1, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
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