keyword
MENU ▼
Read by QxMD icon Read
search

Dextromethorphan

keyword
https://www.readbyqxmd.com/read/29768713/clinical-drug-drug-interaction-potential-of-bfe1224-prodrug-of-antifungal-ravuconazole-using-two-types-of-cocktails-in-healthy-subjects
#1
Yasuyuki Ishii, Yuko Ito, Shunji Matsuki, Kasumi Sanpei, Osamu Ogawa, Kenji Takeda, Edgar L Schuck, Naoto Uemura
BFE1224, prodrug of ravuconazole, is a novel, once-daily, oral, triazole antifungal drug, and currently in development for the treatment of onychomycosis. The clinical drug-drug interaction (DDI) potential of BFE1224 with cytochrome P450 (CYP) and transporter was assessed by using two types of cocktails in healthy subjects in separate clinical studies. The CYP and transporter cocktails consisted of caffeine/tolbutamide/omeprazole/dextromethorphan/midazolam used in study 1 and digoxin/rosuvastatin used in study 2...
May 16, 2018: Clinical and Translational Science
https://www.readbyqxmd.com/read/29744741/effect-of-naltrexone-hydrochloride-on-cytochrome-p450-1a2-2c9-2d6-and-3a4-activity-in-human-liver-microsomes
#2
Haitham AlRabiah, Abdul Ahad, Gamal A E Mostafa, Fahad I Al-Jenoobi
BACKGROUND AND OBJECTIVE: Cytochrome P450 (CYP) 1A2, 2C9, 2D6, and 3A4 are the most important phase I drug-metabolizing enzymes in the liver, but there is a dearth of literature available on the effects of naltrexone hydrochloride on these major enzymes present in the human liver. Thus, in the present study, the effect of naltrexone hydrochloride on the activity of CYP1A2, 2C9, 2D6, and 3A4 using human liver microsomes (HLM) was investigated. METHODS: A selective probe for CYP1A2, 2C9, 2D6, and 3A4 was incubated with HLM with or without naltrexone hydrochloride...
May 9, 2018: European Journal of Drug Metabolism and Pharmacokinetics
https://www.readbyqxmd.com/read/29740299/pharmacological-modulation-of-long-term-potentiation-like-activity-in-the-dorsolateral-prefrontal-cortex
#3
Bahar Salavati, Zafiris J Daskalakis, Reza Zomorrodi, Daniel M Blumberger, Robert Chen, Bruce G Pollock, Tarek K Rajji
Background : Long-term potentiation (LTP) depends on glutamatergic neurotransmission and is modulated by cholinergic, dopaminergic and GABAergic inputs. Paired associative stimulation (PAS) is a neurostimulation paradigm that, when combined with electroencephalography (EEG), assesses LTP-like activity (PAS-induced LTP) in the dorsolateral prefrontal cortex (DLPFC). Thus, we conducted a study to assess the role of cholinergic, dopaminergic, GABAergic and glutamatergic neurotransmission on PAS-induced LTP in the DLPFC...
2018: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29719052/effect-of-single-walled-carbon-nanotubes-on-cytochrome-p450-activity-in-human-liver-microsomes-in-vitro
#4
Yuki Asai, Yukiko Sakakibara, Rina Inoue, Rikako Inoue, Masayuki Nadai, Miki Katoh
Single-walled carbon nanotubes (SWCNTs) are made from a rolled single sheet of graphene with a diameter in the nanometer range. SWCNTs are potential carriers for drug delivery systems because antibodies or drugs can be loaded on their surface; however, their effect on the activities of cytochrome P450 (CYP) remains unclear. The aim of this study was to investigate the effect of two kinds of SWCNTs with different lengths (FH-P- and SO-SWCNTs) on human CYP activity. In addition, other nano-sized carbon materials, such as carbon black, fullerene-C60 , and fullerene-C70 were also evaluated to compare their effects on CYP activities...
May 2, 2018: Biopharmaceutics & Drug Disposition
https://www.readbyqxmd.com/read/29693712/effects-of-rolapitant-administered-intravenously-on-the-pharmacokinetics-of-a-modified-cooperstown-cocktail-midazolam-omeprazole-warfarin-caffeine-and-dextromethorphan-in-healthy-subjects
#5
Xiaodong Wang, Zhi-Yi Zhang, Sujata Arora, Jing Wang, Sharon Lu, Dan Powers, Vikram Kansra
Rolapitant is a selective, long-acting neurokinin-1 receptor antagonist, approved in the United States and Europe for prevention of delayed chemotherapy-induced nausea and vomiting in adults. This open-label study evaluated the effects of a new intravenous formulation of rolapitant on cytochrome P450 (CYP) enzyme (CYP3A, CYP1A2, CYP2C9, CYP2C19, and CYP2D6) activity. On days 1 and 14, 36 healthy volunteers received a modified Cooperstown cocktail (midazolam 3 mg [CYP3A substrate], caffeine 200 mg [CYP1A2 substrate], S-warfarin 10 mg [CYP2C9 substrate] + vitamin K 10 mg, omeprazole 40 mg [CYP2C19 substrate], and dextromethorphan 30 mg [CYP2D6 substrate])...
April 25, 2018: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/29682608/-hallucinations-following-acute-cannabis-dosing-a-case-report-and-comparison-to-other-hallucinogenic-drugs
#6
Frederick S Barrett, Nicolas J Schlienz, Natalie Lembeck, Muhammad Waqas, Ryan Vandrey
Introduction: Cannabis has been historically classified as a hallucinogen. However, subjective cannabis effects do not typically include hallucinogen-like effects. Empirical reports of hallucinogen-like effects produced by cannabis in controlled settings, particularly among healthy research volunteers, are rare and have mostly occurred after administration of purified Δ-9 tetrahydrocannabinol (THC) rather than whole plant cannabis. Methods: The case of a healthy 30-year-old male who experienced auditory and visual hallucinations in a controlled laboratory study after inhaling vaporized cannabis that contained 25 mg THC (case dose) is presented...
2018: Cannabis and Cannabinoid Research
https://www.readbyqxmd.com/read/29610157/clinical-benefit-of-nmda-receptor-antagonists-in-a-patient-with-atp1a2-gene-mutation
#7
Keisuke Ueda, Fatema Serajee, Ahm M Huq
Mutations in the ATP1A2 gene cause familial hemiplegic migraine type 2, alternating hemiplegia of childhood, and cerebellar function deficits, epilepsy, and mental retardation. These symptoms are likely related to glutamatergic hyperexcitability. Our patient is a 12-year-old boy with a history of complex partial seizures, attention-deficit/hyperactivity disorder, and fine motor difficulty. During early childhood, he had episodes of a self-resolving right-sided hemiparesis and focal epilepsy. His seizures did not respond to several antiepileptic medications but stopped after he received valproate...
April 2018: Pediatrics
https://www.readbyqxmd.com/read/29581121/dextromethorphan-attenuates-nadph-oxidase-regulated-gsk-3%C3%AE-and-nf-%C3%AE%C2%BAb-activation-and-reduces-nitric-oxide-production-in-group-a-streptococcal-infection
#8
Chia-Ling Chen, Miao-Huei Cheng, Chih-Feng Kuo, Yi-Lin Cheng, Ming-Han Li, Chih-Peng Chang, Jiunn-Jong Wu, Robert Anderson, Shuying Wang, Pei-Jane Tsai, Ching-Chuan Liu, Yee-Shin Lin
Group A streptococcus (GAS) is an important human pathogen that causes a wide spectrum of diseases, including necrotizing fasciitis and streptococcal toxic shock syndrome. Dextromethorphan (DM), an antitussive drug, has been demonstrated to efficiently reduce inflammatory responses thereby contributing to an increased survival rate of GAS-infected mice. However, the anti-inflammatory mechanisms underlying DM treatment in GAS infection remain unclear. DM is known to exert neuroprotective effects through a NADPH oxidase-dependent regulated process...
March 26, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29565959/identifying-levorphanol-ingestion-using-urine-biomarkers-in-health-care-patients
#9
Amber R Watson, Ali Roberts
BACKGROUND: Levorphanol is a long-acting opioid analgesic that is an optical isomer of dextrorphan, a metabolite of the over-the-counter cough suppressant dextromethorphan. Providers prescribing levorphanol for pain management may need to assess compliance through urine drug testing, as this agent is subject to abuse. Therefore, it is important to differentiate between dextromethorphan and levorphanol ingestion. OBJECTIVES: This article is the first to report urine concentrations of levorphanol/dextrorphan and 3-hydroxymorphinan in human urine and assesses the need for an enantiomeric analysis to distinguish between dextromethorphan and levorphanol ingestion...
March 2018: Pain Physician
https://www.readbyqxmd.com/read/29550976/development-of-a-simultaneous-lc-ms-ms-method-to-predict-in-vivo-drug-drug-interaction-in-mice
#10
Jung Jae Jo, Jun Hyun Jo, SunJoo Kim, Jae-Mok Lee, Sangkyu Lee
Cocktail substrates are useful in investigating drug-drug interactions (DDI) that can rapidly identify the cytochrome P450 (CYP) isoforms that interact with test drugs. In this study, we developed and validated five probe drugs for CYP1A, CYP2B, CYP2C, CYP2D, and CYP3A using LC-MS/MS to determine CYP activities in mice. The five probe substrates were caffeine (2 mg/kg), bupropion (30 mg/kg), omeprazole (4 mg/kg), dextromethorphan (40 mg/kg), and midazolam (2 mg/kg) for CYP1A, CYP2B, CYP2C, CYP2D, and CYP3A, respectively...
March 17, 2018: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/29534535/chondroprotective-effects-and-mechanisms-of-dextromethorphan-repurposing-antitussive-medication-for-osteoarthritis-treatment
#11
Liv Weichien Chen, Feng-Cheng Liu, Li-Feng Hung, Chuan-Yueh Huang, Shiu-Bii Lien, Leou-Chyr Lin, Jenn-Haung Lai, Ling-Jun Ho
Osteoarthritis (OA) is the most common joint disorder and primarily affects older people. The ideal anti-OA drug should have a modest anti-inflammatory effect and only limited or no toxicity for long-term use. Because the antitussive medication dextromethorphan (DXM) is protective in atherosclerosis and neurological diseases, two common disorders in aged people, we examined whether DXM can be protective in pro-inflammatory cytokine-stimulated chondrocytes and in a collagen-induced arthritis (CIA) animal model in this study...
March 12, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29477412/safety-tolerability-and-effectiveness-of-dextromethorphan-quinidine-for-pseudobulbar-affect-among-study-participants-with-traumatic-brain-injury-results-from-the-prism-ii-open-label-study
#12
Flora M Hammond, William Sauve, Fred Ledon, Charles Davis, Andrea E Formella
BACKGROUND: Dextromethorphan 20 mg / quinidine 10 mg (DM/Q) was approved to treat pseudobulbar affect (PBA) based on phase 3 trials conducted in participants with amyotrophic lateral sclerosis or multiple sclerosis. PRISM II evaluated DM/Q effectiveness, safety, and tolerability for PBA following stroke, dementia, or traumatic brain injury (TBI). OBJECTIVE: To report results from the TBI cohort of PRISM II, including a TBI-specific functional scale. DESIGN: Open-label trial evaluating twice-daily DM/Q over 90 days...
February 23, 2018: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/29474194/dextromethorphan-quinidine-in-migraine-prophylaxis-an-open-label-observational-clinical-study
#13
Regina R Berkovich, Alexey Y Sokolov, Daniel M Togasaki, Aida A Yakupova, Paul-Henry Cesar, Soma Sahai-Srivastava
OBJECTIVE: This study aimed to assess potential efficacy and safety of dextromethorphan/quinidine (DMQ) in prophylactic treatment of migraine in patients with multiple sclerosis (MS) with superimposed pseudobulbar affect (PBA). METHODS: Multiple sclerosis patients with superimposed PBA and comorbid migraine were enrolled into this open-label observational study at the University of Southern California Comprehensive MS Center. The baseline characteristics included, among other data, frequency and severity of acute migraine attacks and use of migraine relievers...
March 2018: Clinical Neuropharmacology
https://www.readbyqxmd.com/read/29468562/pkc%C3%AE-knockout-mice-are-protected-from-dextromethorphan-induced-serotonergic-behaviors-in-mice-involvements-of-downregulation-of-5-ht-1a-receptor-and-upregulation-of-nrf2-dependent-gsh-synthesis
#14
Hai-Quyen Tran, Youngho Lee, Eun-Joo Shin, Choon-Gon Jang, Ji Hoon Jeong, Akihiro Mouri, Kuniaki Saito, Toshitaka Nabeshima, Hyoung-Chun Kim
We investigated whether a specific serotonin (5-HT) receptor-mediated mechanism was involved in dextromethorphan (DM)-induced serotonergic behaviors. We firstly observed that the activation of 5-HT1A receptor, but not 5-HT2A receptor, contributed to DM-induced serotonergic behaviors in mice. We aimed to determine whether the upregulation of 5-HT1A receptor induced by DM facilitates the specific induction of certain PKC isoform, because previous reports suggested that 5-HT1A receptor activates protein kinase C (PKC)...
February 22, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29465478/glutamatergic-modulators-in-depression
#15
Ioline D Henter, Rafael Teixeira de Sousa, Carlos A Zarate
Both preclinical and clinical studies have implicated glutamatergic system dysfunction in the pathophysiology of mood disorders such as bipolar depression and major depressive disorder. In particular, rapid reductions in depressive symptoms have been noted in response to subanesthetic doses of the glutamatergic modulator ketamine in subjects with major depressive disorder or bipolar depression. These results have prompted the repurposing or development of other glutamatergic modulators, both as monotherapy or adjunctive to other therapies...
February 20, 2018: Harvard Review of Psychiatry
https://www.readbyqxmd.com/read/29455092/internet-pseudoscience-testing-opioid-containing-formulations-with-tampering-potential
#16
Jennifer P Pascali, Paolo Fais, Fabio Vaiano, Nicola Pigaiani, Stefano D'Errico, Sandra Furlanetto, Diego Palumbo, Elisabetta Bertol
Drug tampering practices, with the aim to increase availability of drug delivery and/or enhance drug effects, are accessible on Internet and are practiced by some portion of recreational drug users. Not rarely, recreational misuse may result in toxic and even fatal results. The aim of the present study was to assess the tampering risk of medicaments containing different formulations of an opioid in combination with paracetamol or dexketoprofen, following the procedures reported in dedicated forums on the web...
May 10, 2018: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29439084/evaluating-the-impact-of-type-2-diabetes-mellitus-on-cyp450-metabolic-activities-protocol-for-a-case-control-pharmacokinetic-study
#17
Sophie Gravel, Jean-Louis Chiasson, Suzanne Dallaire, Jacques Turgeon, Veronique Michaud
INTRODUCTION: Diabetes affects more than 9% of the adult population worldwide. Patients with type 2 diabetes mellitus (T2DM) show variable responses to some drugs which may be due, in part, to variability in the functional activity of drug-metabolising enzymes including cytochromes P450 (CYP450s). CYP450 is a superfamily of enzymes responsible for xenobiotic metabolism. Knowledge must be gained on the impact of T2DM and related inflammatory processes on drug metabolism and its consequences on drug response...
February 8, 2018: BMJ Open
https://www.readbyqxmd.com/read/29425645/repeated-administration-of-sailuotong-a-fixed-combination-of-panax-ginseng-ginkgo-biloba-and-crocus-sativus-extracts-for-vascular-dementia-alters-cyp450-activities-in-rats
#18
Ying Zhang, Lan Miao, Li Lin, Chang-Ying Ren, Jian-Xun Liu, Yi-Min Cui
BACKGROUND: Sailuotong (SLT) is a standard Chinese preparation made from extracts of Panax ginseng (ginseng), Ginkgo biloba (ginkgo), and Crocus sativus (saffron). Preliminary clinical trials and animal experiments have demonstrated that SLT could improve cognition of vascular dementia (VD). PURPOSE: To avoid incident drug-drug interaction which is easily encountered in patients of VD, the potential influence of SLT on main drug-metabolic cytochromes P450 enzymes (CYP450) was investigated...
January 1, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29407477/mutually-augmenting-interactions-of-dextromethorphan-and-sazetidine-a-for-reducing-nicotine-self-administration-in-rats
#19
Edward D Levin, Corrine Wells, Susan Slade, Amir H Rezvani
A variety of nicotinic drug treatments have been found to decrease nicotine self-administration. However, interactions of drugs affecting different nicotinic receptor subtypes have not been much investigated. This study investigated the interactions between dextromethorphan, which blocks nicotinic α3β2 receptors as well as a variety of other receptors with sazetidine-A which is a potent and selective α4β2 nicotinic receptor partial agonist with desensitizing properties. This interaction was compared with dextromethorphan combination treatment with mecamylamine, which is a nonspecific nicotinic channel blocker...
March 2018: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/29401155/combined-nmda-inhibitor-use-in-a-patient-with-multisubstance-induced-psychotic-disorder
#20
Matteo Caloro, Giuseppa Calabrò, Eleonora de Pisa, Enrico Rosini, Georgios D Kotzalidis, Davide Lonati, Carlo Alessandro Locatelli, Pietro Papa, Fabrizio Schifano, Paolo Girardi
: Novel psychoactive substance use is a major social concern. Their use may elicit or uncover unpredictably as yet undescribed clinical pictures. We aimed to illustrate a multisubstance use case indistinguishable from paranoid schizophrenia, so to alert clinicians on possibly misdiagnosing substance-induced psychotic disorders. CASE REPORT: We describe a case of a 32-year-old man who started at 18 years with cannabinoids and ketamine, and is currently using N-methyl-D-aspartate (NMDA) antagonists...
February 2, 2018: Journal of Addiction Medicine
keyword
keyword
25345
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"