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https://www.readbyqxmd.com/read/28830124/postmortem-fluid-and-tissue-concentrations-of-thc-11-oh-thc-and-thc-cooh
#1
Sunday R Saenz, Russell J Lewis, Mike K Angier, Jarrad R Wagner
Marijuana is the most commonly abused illicit drug worldwide. Marijuana is used for its euphoric and relaxing properties. However, marijuana use has been shown to result in impaired memory, cognitive skills and psychomotor function. The Federal Aviation Administration's Civil Aerospace Medical Institute conducts toxicological analysis on aviation fatalities. Due to severe trauma associated with aviation accidents, blood is not always available; therefore, the laboratory must rely on specimens other than blood for toxicological analysis in ~30-40% of cases...
July 1, 2017: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/28830123/application-of-a-urine-and-hair-validated-lc-ms-ms-method-to-determine-the-effect-of-hair-color-on-the-incorporation-of-25b-nbome-25c-nbome-and-25i-nbome-into-hair-in-the-rat
#2
Lorna A Nisbet, Rafael Venson, Fiona M Wylie, Karen S Scott
NBOMes are a group of new psychoactive substances derived from phenethylamines. Recreational abuse is thought to have begun in 2010 and they are commonly associated with the "club drug" scene. They are administered in liquid form or as blotters due to their high potency. An LC-MS-MS method was validated using Scientific Working Group for Forensic Toxicology parameters for the detection of 25B-, 25C- and 4-iodo-2,5-dimethoxy-N-[(2-methoxyphenyl)methyl]-benzeneethanamine (25I-NBOMe) using 4-bromo-2,5-dimethoxy-N-[(2-methoxyphenyl)methyl]-benzeneethanamine (25B-NBOMe)-D3 as internal standard for urine and hair...
July 1, 2017: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/28830122/an-lc-ms-ms-method-for-the-analysis-of-carfentanil-3-methylfentanyl-2-furanyl-fentanyl-acetyl-fentanyl-fentanyl-and-norfentanyl-in-postmortem-and-impaired-driving-cases
#3
Szabolcs Sofalvi, Harold E Schueler, Eric S Lavins, Claire K Kaspar, Ian T Brooker, Carrie D Mazzola, David Dolinak, Thomas P Gilson, Steve Perch
In July of 2016, carfentanil (CF) emerged in Northeast Ohio resulting in over 25 deaths within a 30-day period. A total of 125 deaths have occurred in Summit County and Cuyahoga County has reported 40 deaths, relating to the presence of CF either alone, or in combinations with heroin and fentanyl. Prior to this surge in CF cases, positive fentanyl enzyme-linked immunosorbent assay (ELISA) screening results were increasing in number. Many were negative for fentanyl confirmation by gas chromatography-mass spectrometry...
July 1, 2017: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/28830121/drugged-driving-in-wisconsin-oral-fluid-versus-blood
#4
Lorrine D Edwards, Katherine L Smith, Theodore Savage
A pilot project was conducted in Dane County, Wisconsin, to evaluate the frequency of individuals driving under the influence of drugs (DUID). Evidentiary blood specimens, collected from subjects arrested for Operating While Intoxicated (OWI), were compared to oral fluid (OF) results obtained with the Alere DDS2®, a handheld screening device. The project objectives were to evaluate (i) the Alere DDS2® for use by police officers in the field, (ii) the frequency of individuals DUID and drugs combined with alcohol among OWI cases, (iii) the differences between detecting drugs in OF and in blood, and (iv) the effect of the laboratory drug testing cancellation policy (LCP) when the blood alcohol concentration (BAC) exceeds 0...
July 1, 2017: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/28830119/confirmation-of-carfentanil-u-47700-and-other-synthetic-opioids-in-a-human-performance-case-by-lc-ms-ms
#5
Joshua Seither, Lisa Reidy
Recently, it has been documented that there has been a rise in synthetic opioid abuse. Synthetic opioids are compounds that were created to act as agonists for the opioid receptors. Like synthetic cannabinoids, most of these compounds were created by research groups or pharmaceutical companies in an attempt to find compounds that have medicinal use. Synthetic opioids have severe health implications when abused that can include hospitalization and death. Due to the high potency and the low dose required to produce the desired effects for these compounds, it was hypothesized that they may not be detectable in human performance case samples...
July 1, 2017: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/28830118/two-fatal-intoxications-involving-3-methoxyphencyclidine
#6
Christie Mitchell-Mata, Brittany Thomas, Brianna Peterson, Fiona Couper
3- and 4-methoxyphencyclidine (3-MeO-PCP, 4-MeO-PCP), structural analogs of phencyclidine (PCP), were among the first legal PCP alternatives to show up on the novel psychoactive substances (NPS) market in Europe in the 2000s. Their structural similarities to PCP and ketamine likely contribute to their demonstrated dissociative anesthetic effects. Limited information exists in the literature about toxic and lethal concentrations of these drugs in biological samples. This case report presents the first two death cases in Washington State in which 3-MeO-PCP was identified...
July 1, 2017: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/28830117/analysis-of-dextromethorphan-and-dextrorphan-in-skeletal-remains-following-differential-microclimate-exposure-comparison-of-acute-vs-repeated-drug-exposure
#7
Lucas M Morrison, Kirk A Unger, James H Watterson
Analysis of dextromethorphan (DXM) and its metabolite dextrorphan (DXT) in skeletal remains of rats following acute (ACU, 75 mg/kg, IP, n = 10) or three repeated (REP, 25 mg/kg, IP, n = 10, 40-min interval) doses of DXM is described. Following dosing and euthanasia, rats decomposed outdoors to skeleton in two different microclimate environments (n = 5 ACU and n = 5 REP at each site): Site A (shaded forest microenvironment) and Site B (rocky substrate exposed to direct sunlight, 600 m from Site A). Two drug-free rats at each site served as negative controls...
July 1, 2017: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/28830106/digital-pharmacovigilance-and-disease-surveillance-combining-traditional-and-big-data-systems-for-better-public-health
#8
Marcel Salathé
The digital revolution has contributed to very large data sets (ie, big data) relevant for public health. The two major data sources are electronic health records from traditional health systems and patient-generated data. As the two data sources have complementary strengths-high veracity in the data from traditional sources and high velocity and variety in patient-generated data-they can be combined to build more-robust public health systems. However, they also have unique challenges. Patient-generated data in particular are often completely unstructured and highly context dependent, posing essentially a machine-learning challenge...
December 1, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28830083/metoprolol-increases-uric-acid-and-risk-of-gout-in-african-americans-with-chronic-kidney-disease-attributed-to-hypertension
#9
Stephen P Juraschek, Lawrence J Appel, Edgar R Miller
BACKGROUND: There is little evidence guiding selection of nondiuretic, antihypertensive agents with a goal of lowering uric acid (SUA) and minimizing gout risk. METHODS: In the African American Study of Kidney Disease and Hypertension (AASK) trial, African Americans with chronic kidney disease were randomly assigned to metoprolol (a beta-blocker), ramipril (an angiotensin-converting enzyme inhibitors [ACEi]), or amlodipine (a dihydropyridine calcium-channel blocker)...
September 1, 2017: American Journal of Hypertension
https://www.readbyqxmd.com/read/28830049/aerobic-activated-sludge-transformation-of-vincristine-and-identification-of-the-transformation-products
#10
Tina Kosjek, Noelia Negreira, Ester Heath, Miren López de Alda, Damià Barceló
This study aims to identify (bio)transformation products of vincristine, a plant alkaloid chemotherapy drug. A batch biotransformation experiment was set-up using activated sludge at two concentration levels with and without the addition of a carbon source. Sample analysis was performed on an ultra-high performance liquid chromatograph coupled to a high-resolution hybrid quadrupole-Orbitrap tandem mass spectrometer. To identify molecular ions of vincristine transformation products and to propose molecular and chemical structures, we performed data-dependent acquisition experiments combining full-scan mass spectrometry data with product ion spectra...
August 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28830039/spectrophotometric-determination-of-fenoprofen-calcium-drug-in-pure-and-pharmaceutical-preparations-spectroscopic-characterization-of-the-charge-transfer-solid-complexes
#11
Marwa E Mohamed, Eman Y Z Frag, Abla A Hathoot, Essam A Shalaby
Simple, accurate and robust spectrophotometric method was developed for determination of fenoprofen calcium drug (FPC). The proposed method was based on the charge transfer (CT) reaction of FPC drug (as n-electron donor) with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ), 2,4,6-trinitrophenol (picric acid, PA) or 1,2,5,8-tetrahydroxyanthraquinone (Quinalizarin, QZ) (as π-acceptors) to give highly colored charge transfer complexes. Different variables affecting the reaction such as reagent concentration, temperature and time have been carefully optimized to achieve the highest sensitivity...
August 10, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28830031/perampanel-with-concomitant-levetiracetam-and-topiramate-post-hoc-analysis-of-adverse-events-related-to-hostility-and-aggression
#12
Steve Chung, Betsy Williams, Cindy Dobrinsky, Anna Patten, Haichen Yang, Antonio Laurenza
In 4 Phase III registration trials (3 in patients with partial seizures, N=1480; 1 in patients with PGTCS, N=163), perampanel administered to patients already receiving 1-3 concomitant antiepileptic drugs (AEDs) demonstrated statistically superior efficacy compared to placebo in reducing seizure frequency. However, use of perampanel in these studies was associated with a risk of psychiatric and behavioral adverse reactions, including aggression, hostility, irritability, anger, and homicidal ideation and threats...
August 19, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28830014/ultradeep-sequencing-of-b-and-non-b-hiv-1-subtypes-viral-diversity-and-drug-resistance-mutations-before-and-after-one-month-of-antiretroviral-therapy-in-naive-patients
#13
Olivier Epaulard, Anne Signori-Schmuck, Sylvie Larrat, Om Kulkarni, Michael G Blum, Katia Fusillier, Myriam Blanc, Pascale Leclercq, Olivier François, Patrice Morand
BACKGROUND: Ultradeep pyrosequencing technologies permit an assessment of the genetic diversity and the presence and frequency of minority variants in a viral population. The effect of these parameters on the outcome of highly active antiretroviral therapy (HAART) in HIV-infected patients is poorly understood. OBJECTIVES: The present study used the pyrosequencing Roche 454 prototype assay to determine whether antiretroviral efficacy is correlated with viral diversity and minority drug resistance mutations in HIV-infected treatment-naive patients and to compare assay performance in B and non-B subtypes...
July 25, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28830009/humanization-of-jaa-f11-a-highly-specific-anti-thomsen-friedenreich-pancarcinoma-antibody-and-invitro-efficacy-analysis
#14
Swetha Tati, John C Fisk, Julia Abdullah, Loukia Karacosta, Taylor Chrisikos, Padraic Philbin, Susan Morey, Diala Ghazal, Fatma Zazala, Joseph Jessee, Sally Quataert, Stephen Koury, David Moreno, Jing Ying Eng, Vladislav V Glinsky, Olga V Glinskii, Muctarr Sesay, Anthony W Gebhard, Karamveer Birthare, James R Olson, Kate Rittenhouse-Olson
JAA-F11 is a highly specific mouse monoclonal to the Thomsen-Friedenreich Antigen (TF-Ag) which is an alpha-O-linked disaccharide antigen on the surface of ~80% of human carcinomas, including breast, lung, colon, bladder, ovarian, and prostate cancers, and is cryptic on normal cells. JAA-F11 has potential, when humanized, for cancer immunotherapy for multiple cancer types. Humanization of JAA-F11, was performed utilizing complementarity determining regions grafting on a homology framework. The objective herein is to test the specificity, affinity and biology efficacy of the humanized JAA-F11 (hJAA-F11)...
August 19, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28829985/follow-up-study-of-idiopathic-generalized-epilepsy-with-associated-absence-seizure-and-myoclonic-epilepsy-of-infancy
#15
Vincenzo Belcastro, Lucio Giordano, Dario Pruna, Cinzia Peruzzi, Susanna Casellato, Salvatore Barca, Giorgia Carlone, Pasquale Striano, Alberto Verrotti
We evaluated the long-term prognosis of patients featuring the association of absences and myoclonic epilepsy of infancy. Our cohort consisted of 10 male subjects with mean age at seizure onset of 29 months. Follow-up data included seizure outcome and EEG findings. All individuals received antiepileptic drugs (AEDs) as monotherapy (6 patients) or polytherapy (4 patients) for a mean period of 24 months. Over a 30-60 month evaluation period (mean: 43 months), all patients were seizure-free. Follow-up data after withdrawal of antiepileptic therapy were obtained for a mean period of 22 months...
August 14, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28829954/microparticle-templating-as-a-route-to-nanoscale-polymer-vesicles-with-controlled-size-distribution-for-anticancer-drug-delivery
#16
Weichang Li, Siqi Liu, Hang Yao, Guoxing Liao, Ziwei Si, Xiangjun Gong, Li Ren, Linge Wang
Polymer vesicles are self-assembled shells of amphiphilic block copolymers (BCPs) that have attracted tremendous interest due to their encapsulation ability and intracellular delivery of therapeutic agents. However, typical processes for the formation of polymer vesicles lead to ensembles of structures with a broad size distribution (from nanometer to micrometer scale) which result in a limitation for efficient cellular uptake. In this study, we present a simple and efficient approach for the fabrication of polymer vesicles with uniform nanoscale dimensions from template formation of electrosprayed particles in a high throughput manner...
August 16, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28829936/preemptive-use-of-naproxen-on-tooth-sensitivity-caused-by-in-office-bleaching-a-triple-blind-crossover-randomized-clinical-trial
#17
M T Fernandes, S C Vaez, C M Lima, F P Nahsan, A D Loguércio, A L Faria-E-Silva
OBJECTIVES: A triple-blind, randomized, crossover clinical trial evaluated prior use of nonsteroidal anti-inflammatory naproxen on sensitivity reported by patients undergoing in-office tooth bleaching. METHODS AND MATERIALS: Fifty patients were subjected to two sessions of in-office tooth bleaching with 35% hydrogen peroxide in a single application of 40 minutes for two sessions, with an interval of seven days between applications. One hour prior to the procedure, each patient randomly received a single dose of naproxen (500 mg) or placebo...
September 2017: Operative Dentistry
https://www.readbyqxmd.com/read/28829917/the-application-of-monodisperse-pegs-in-pharmaceutics-monodisperse-polidocanols
#18
Zeqiong Yu, Shaowei Bo, Huiyuan Wang, Yu Li, Zhigang Yang, Yongzhuo Huang, Zhong-Xing Jiang
Polydisperse PEGs are ubiquitously used in pharmaceutical industry and biomedical research. However, the monodispersity in PEGs may play a role in the development of safe and effective PEGylated small molecular drugs. Here, to avoid the polydispersity in polidocanol, the active ingredient in a clinically used drug, a macrocyclic sulfate-based strategy for the efficient and scalable synthesis of monodisperse polidocanols, their sulfates and their methylated derivatives was developed. TLC and HPLC analysis indicated a complex mixture in regular polidocanol and high purities in monodisperse polidocanols and derivatives...
August 22, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28829910/oxycodone-for-cancer-related-pain
#19
REVIEW
Mia Schmidt-Hansen, Michael I Bennett, Stephanie Arnold, Nathan Bromham, Jennifer S Hilgart
BACKGROUND: Many people with cancer experience moderate to severe pain that requires treatment with strong opioids, such as oxycodone and morphine. Strong opioids are, however, not effective for pain in all people, neither are they well-tolerated by all people. The aim of this review was to assess whether oxycodone is associated with better pain relief and tolerability than other analgesic options for adults with cancer pain. This is an updated version of the original Cochrane review published in 2015, Issue 2 on oxycodone for cancer-related pain...
August 22, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28829854/endogenous-fungal-endophthalmitis-an-increasing-problem-among-intravenous-drug-users
#20
Nidhi Relhan, Stephen G Schwartz, Harry W Flynn
No abstract text is available yet for this article.
August 22, 2017: JAMA: the Journal of the American Medical Association
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