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Dextromethorphan

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https://www.readbyqxmd.com/read/27886853/airway-remodeling-associated-with-cough-hypersensitivity-as-a-consequence-of-persistent-cough-an-experimental-study
#1
Hitoshi Nakaji, Akio Niimi, Hirofumi Matsuoka, Toshiyuki Iwata, Shilei Cui, Hisako Matsumoto, Isao Ito, Tsuyoshi Oguma, Kojiro Otsuka, Tomoshi Takeda, Hideki Inoue, Tomoko Tajiri, Tadao Nagasaki, Yoshihiro Kanemitsu, Kazuo Chin, Michiaki Mishima
BACKGROUND: Chronic cough involves airway remodeling associated with cough reflex hypersensitivity. Whether cough itself induces these features remains unknown. METHODS: Guinea pigs were assigned to receive treatment with citric acid (CA), saline (SA), or CA+dextromethorphan (DEX). All animals were exposed to 0.5M CA on days 1 and 22. On days 4-20, the CA and CA+DEX groups were exposed to CA, and the SA group to saline thrice weekly, during which the CA+DEX group was administered DEX pretreatment to inhibit cough...
November 2016: Respiratory Investigation
https://www.readbyqxmd.com/read/27867308/effect-of-n-methyl-d-aspartate-receptor-antagonist-dextromethorphan-on-opioid-analgesia-in-pediatric-intensive-care-unit
#2
Mohammed Naeem, Hala Al Alem, Ali Al Shehri, Majed Al-Jeraisy
Objective. Pain control is an essential goal in the management of critical children. Narcotics are the mainstay for pain control. Patients frequently need escalating doses of narcotics. In such cases an adjunctive therapy may be beneficial. Dextromethorphan (DM) is NMDA receptor antagonist and may prevent tolerance to narcotics; however, its definitive role is still unclear. We sought whether dextromethorphan addition could decrease the requirements of fentanyl to control pain in critical children. Design. Double-blind, randomized control trial (RCT)...
2016: Pain Research & Management: the Journal of the Canadian Pain Society
https://www.readbyqxmd.com/read/27867000/neuromodulatory-effects-of-the-dorsal-hippocampal-endocannabinoid-system-in-dextromethorphan-morphine-induced-amnesia
#3
Zahra Ghasemzadeh, Ameneh Rezayof
Dextromethorphan which is an active ingredient in many cough medicines has been previously shown to potentiate amnesic effect of morphine in rats. However, the effect of dextromethorphan, that is also a noncompetitive N-methyl-D-aspartate (NMDA) receptor antagonist, in combination with morphine on hippocampus-based long term memory has not been well characterized. The aim of the present study was to assess the possible role of endocannabinoid system of the dorsal hippocampus in dextromethorphan /morphine-induced amnesia...
November 17, 2016: European Journal of Pharmacology
https://www.readbyqxmd.com/read/27855728/dextromethorphan-quinidine-responsive-pseudobulbar-affect-pba-psychopharmacological-model-for-wide-ranging-disorders-of-emotional-expression
#4
Stephen M Stahl
The symptoms of emotional dysregulation associated with the syndrome known as pseudobulbar affect (PBA) can be effectively treated by the sigma, glutamate, and serotonergic agent dextromethorphan combined with quinidine. If the same brain circuits affected in PBA are also compromised in related disorders of emotional expression, dextromethorphan-quinidine and other novel sigma-glutamate-serotonin agents could prove to be novel psychopharmacologic treatments for these conditions as well.
December 2016: CNS Spectrums
https://www.readbyqxmd.com/read/27849505/a-prospective-observation-study-of-medical-toxicology-consultation-in-a-u-s-combat-theater
#5
Joseph K Maddry, Patrick C Ng, Daniel Sessions, Vikhyat S Bebarta
OBJECTIVES: Since 2001, U.S. military personnel and active duty, uniformed physicians providing medical support have been deployed to Afghanistan. Medical toxicologists are among the physicians deployed. There is a paucity of information present in the literature that has documented cases treated by toxicologists in theater. This prospective observational study describes 15 male patients treated in theater by a military medical toxicologist. METHODS: We performed a prospective observational study in which a medical toxicologist consulted and reported on deployed toxicology cases occurring during a 5-month deployment to Bagram, Afghanistan...
November 2016: Military Medicine
https://www.readbyqxmd.com/read/27843771/multi-modal-preemptive-analgesia-with-pregabalin-acetaminophen-naproxen-and-dextromethorphan-in-radical-neck-dissection-surgery-a-randomized-clinical-trial
#6
Hamid Reza Amiri, Mojtaba Mirzaei, Mohammad Taghi Beig Mohammadi, Farhad Tavakoli
BACKGROUND: Preemptive analgesia may be considered as a method not only to alleviate postoperative pain but also to decrease analgesic consumption. Different regimens are suggested, but there is currently no standard. OBJECTIVES: The aim was to measure the efficacy of preemptive analgesia with pregabalin, acetaminophen, naproxen, and dextromethorphan in radical neck dissection surgery for reducing the intensity of pain and morphine consumption. PATIENTS AND METHODS: This study was conducted as a randomized double-blind clinical trial...
August 2016: Anesthesiology and Pain Medicine
https://www.readbyqxmd.com/read/27802908/high-dose-dextromethorphan-produces-myelinoid-bodies-in-the-hippocampus-of-rats
#7
Hai-Quyen Tran, Yoon Hee Chung, Eun-Joo Shin, Won Ki Kim, Jae-Chul Lee, Ji Hoon Jeong, Myung Bok Wie, Choon-Gon Jang, Kiyofumi Yamada, Toshitaka Nabeshima, Hyoung-Chun Kim
Dextromethorphan (DM) administered at supra-antitussive doses produce psychotoxic and neurotoxic effects in humans. We administered DM (80 mg/kg) to rats intraperitoneally to determine the ultrastructural change induced by DM, because intraperitoneal route is sensitive for the behavioral responses. Treatment with DM resulted in mitochondrial dysfunction and formation of myelinoid bodies in the hippocampus. MK-801 [(+)-5-methyl-10,11-dihydro-5H-dibenzo[a,d]cyclohepten-5,10-imine maleate] attenuated DM-induced cytosolic oxidative burdens...
October 8, 2016: Journal of Pharmacological Sciences
https://www.readbyqxmd.com/read/27791105/dynamic-brain-network-reconfiguration-as-a-potential-schizophrenia-genetic-risk-mechanism-modulated-by-nmda-receptor-function
#8
Urs Braun, Axel Schäfer, Danielle S Bassett, Franziska Rausch, Janina I Schweiger, Edda Bilek, Susanne Erk, Nina Romanczuk-Seiferth, Oliver Grimm, Lena S Geiger, Leila Haddad, Kristina Otto, Sebastian Mohnke, Andreas Heinz, Mathias Zink, Henrik Walter, Emanuel Schwarz, Andreas Meyer-Lindenberg, Heike Tost
Schizophrenia is increasingly recognized as a disorder of distributed neural dynamics, but the molecular and genetic contributions are poorly understood. Recent work highlights a role for altered N-methyl-d-aspartate (NMDA) receptor signaling and related impairments in the excitation-inhibitory balance and synchrony of large-scale neural networks. Here, we combined a pharmacological intervention with novel techniques from dynamic network neuroscience applied to functional magnetic resonance imaging (fMRI) to identify alterations in the dynamic reconfiguration of brain networks related to schizophrenia genetic risk and NMDA receptor hypofunction...
November 1, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27771456/lotus-leaf-alkaloid-fraction-can-strongly-inhibit-cyp2d6-isoenzyme-activity
#9
Lin-Hu Ye, Ling-Ti Kong, Ming-Zhu Yan, Fang-Rui Cao, Li-Sha Wang, Yong-Hong Liao, Rui-Le Pan, Qi Chang
ETHNOPHARMACOLOGICAL RELEVANCE: The Chinese herbal medicine He-Ye, the leaves of the lotus (Nelumbo nucifera) plant, is traditionally used in China for the treatment of sunstroke, thirst, diarrhea, and fever. Currently, the leaf is used not only as an herbal tea to reduce lipid level and control body weight, but also as a major ingredient in some lipid-lowering Chinese patented medicines. Our previous study demonstrated that the alkaloid fraction (AF) of the herb has a strong inhibitory effect on CYP2D6 isoenzyme activity in vitro...
October 19, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27749797/adolescent-intentional-abuse-ingestions-overall-10-year-trends-and-regional-variation
#10
David C Sheridan, Robert G Hendrickson, Gillian Beauchamp, Amber Laurie, Rongwei Fu, B Zane Horowitz
OBJECTIVE: Adolescent intentional ingestions remain a significant public health problem in the United States with little research to date on the over-the-counter or prescription medicines that adolescents abuse. These data are important for anticipatory guidance by primary care providers, preventive health, and poison center outreach. METHODS: This was an observational study using the American Association of Poison Control Centers National Poison Data System. The study population consisted of all cases of patients aged 13 to 19 years from 2004 to 2013 with a coding of "intentional abuse...
October 4, 2016: Pediatric Emergency Care
https://www.readbyqxmd.com/read/27746690/effect-of-red-ginseng-on-cytochrome-p450-and-p-glycoprotein-activities-in-healthy-volunteers
#11
Dal-Sik Kim, Yunjeong Kim, Ji-Young Jeon, Min-Gul Kim
BACKGROUND: We evaluated the drug interaction profile of Red Ginseng (RG) with respect to the activities of major cytochrome P450 (CYP) enzymes and the drug transporter P-glycoprotein (P-gp) in healthy Korean volunteers. METHODS: This article describes an open-label, crossover study. CYP probe cocktail drugs, caffeine, losartan, dextromethorphan, omeprazole, midazolam, and fexofenadine were administered before and after RG supplementation for 2 wk. Plasma samples were collected, and tolerability was assessed...
October 2016: Journal of Ginseng Research
https://www.readbyqxmd.com/read/27739267/prevailing-practices-for-the-management-of-dry-cough-in-india-a-questionnaire-based-survey
#12
Rakesh Pore, Swati Biswas, Srirupa Das
PURPOSE: The aim of the survey was to understand the prevailing practice pattern for the management of dry cough among primary care physicians in Indian clinical setting. MATERIAL AND METHODS: This single visit, cross-sectional, non-interventional, interview based physician survey was conducted over a period of 3 months where 500 registered physicians with at least 6 months of clinical practice and willing to participate in the survey were interviewed in their clinic or hospital from June to August 2015...
June 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27738991/potential-gray-matter-unpruned-in-adolescents-and-young-adults-dependent-on-dextromethorphan-containing-cough-syrups-evidence-from-cortical-and-subcortical-study
#13
Ying-Wei Qiu, Xiao-Fei Lv, Gui-Hua Jiang, Huan-Huan Su, Xiao-Fen Ma, Jun-Zhang Tian, Fu-Zhen Zhuo
Adolescence is a unique period in neurodevelopment. Dextromethorphan (DXM)-containing cough syrups are new addictive drugs used by adolescents and young adults. The effects of chronic DXM abuse on neurodevelopment in adolescents and young adults are still unknown. The aim of this study was to investigate the differences in cortical thickness and subcortical gray matter volumes between DXM-dependent adolescents and young adults and healthy controls, and to explore relationships between alternations in cortical thickness/subcortical volume and DXM duration, initial age of DXM use, as well as impulsive behavior in DXM-dependent adolescents and young adults...
October 13, 2016: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/27738380/treatment-resistant-depression-with-loss-of-antidepressant-response-rapid-acting-antidepressant-action-of-dextromethorphan-a-possible-treatment-bridging-molecule
#14
Edward C Lauterbach
Dextromethorphan (DM) may have ketamine-like rapid-acting, treatment-resistant, and conventional antidepressant effects.(1,2) This reports our initial experience with DM in unipolar Major Depressive Disorder (MDD). A patient with treatment-resistant MDD (failing adequate trials of citalopram and vortioxetine) with loss of antidepressant response (to fluoxetine and bupropion) twice experienced a rapid-acting antidepressant effect within 48 hours of DM administration and lasting 7 days, sustained up to 20 days with daily administration, then gradually developing labile loss of antidepressant response over the ensuing 7 days...
August 15, 2016: Psychopharmacology Bulletin
https://www.readbyqxmd.com/read/27737513/pharmacologic-interventions-for-treating-phantom-limb-pain
#15
REVIEW
Maria Jenelyn M Alviar, Tom Hale, Monalisa Dungca
BACKGROUND: This is an updated version of the original Cochrane review published in Issue 12, 2011. Phantom limb pain (PLP) is pain that arises in the missing limb after amputation and can be severe, intractable, and disabling. Various medications have been studied in the treatment of phantom pain. There is currently uncertainty in the optimal pharmacologic management of PLP. OBJECTIVES: This review aimed to summarise the evidence of effectiveness of pharmacologic interventions in treating PLP...
October 14, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27736263/adverse-events-associated-with-pediatric-exposures-to-dextromethorphan
#16
Ian M Paul, Kate M Reynolds, Ralph E Kauffman, William Banner, G Randall Bond, Robert B Palmer, Randy I Burnham, Jody L Green
STUDY OBJECTIVE: Dextromethorphan is the most common over-the-counter (OTC) antitussive medication. We sought to characterize adverse events associated with dextromethorphan in children <12 years old from a surveillance program of OTC cough/cold medication exposures. METHODS: This is a retrospective case series of oral exposures to dextromethorphan with ≥1 adverse event from multiple U.S. sources (National Poison Data System, FDA Adverse Event Reporting System, manufacturer safety reports, news/media, medical literature) reported between 2008 and 2014...
October 13, 2016: Clinical Toxicology
https://www.readbyqxmd.com/read/27734142/a-liquid%C3%A2-chromatography-tandem-mass-spectrometry-analysis-of-nine-cytochrome-p450-probe-drugs-and-their-corresponding-metabolites-in-human-serum-and-urine
#17
Elena Puris, Markku Pasanen, Mikko Gynther, Merja R Häkkinen, Jussi Pihlajamäki, Tapani Keränen, Paavo Honkakoski, Hannu Raunio, Aleksanteri Petsalo
Cocktail phenotyping using specific probe drugs for cytochrome P450 (CYP) enzymes provides information on the real-time activity of multiple CYPs. We investigated different sample preparation techniques and validated a liquid chromatography-tandem mass spectrometry (LC-MS/MS) method with simple protein precipitation for the analysis of nine CYP probe drugs and their metabolites in human serum and urine. Specific CYP probe drugs (melatonin, CYP1A2; nicotine, CYP2A6; bupropion, CYP2B6; repaglinide, CYP2C8; losartan, CYP2C9; omeprazole, CYP2C19 and CYP3A4; dextromethorphan, CYP2D6; chlorzoxazone, CYP2E; midazolam, CYP3A4) and their main metabolites, with the exception of 3'-hydroxyrepaglinide, were quantified in human serum and urine using the developed LC-MS/MS method...
October 12, 2016: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/27695293/application-of-physiologically-based-pharmacokinetic-modeling-in-predicting-drug-drug-interactions-for-sarpogrelate-hydrochloride-in-humans
#18
Jee Sun Min, Doyun Kim, Jung Bae Park, Hyunjin Heo, Soo Hyeon Bae, Jae Hong Seo, Euichaul Oh, Soo Kyung Bae
BACKGROUND: Evaluating the potential risk of metabolic drug-drug interactions (DDIs) is clinically important. OBJECTIVE: To develop a physiologically based pharmacokinetic (PBPK) model for sarpogrelate hydrochloride and its active metabolite, (R,S)-1-{2-[2-(3-methoxyphenyl)ethyl]-phenoxy}-3-(dimethylamino)-2-propanol (M-1), in order to predict DDIs between sarpogrelate and the clinically relevant cytochrome P450 (CYP) 2D6 substrates, metoprolol, desipramine, dextromethorphan, imipramine, and tolterodine...
2016: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/27687431/different-interventions-in-preventing-opioid-induced-cough-a-meta-analysis
#19
REVIEW
Li Shuying, Li Ping, Ni Juan, Luo Dong
BACKGROUND: Cough is one of the most common complications of opioids. Many studies have evaluated the effect of various drugs in preventing opioid-induced cough (OIC). However, there is existing controversy about those reports. The present study was performed to assess the efficacy of different interventions on OIC. METHODS: We searched the Cochrane Central Register of Controlled Trials (CENTRAL), PubMed, and Embase to identify randomized controlled trials on the efficacy of different drugs in the prevention of OIC...
November 2016: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/27673025/poster-268-dextromethorphan-and-quinidine-for-treating-post-traumatic-brain-injury-agitation-a-case-series
#20
Gilbert Siu, Don Vongviphut
No abstract text is available yet for this article.
September 2016: PM & R: the Journal of Injury, Function, and Rehabilitation
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