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CO Poisoning

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https://www.readbyqxmd.com/read/28335315/oxidation-of-co-and-methanol-on-pd-ni-catalysts-supported-on-different-chemically-treated-carbon-nanofibers
#1
Juan Carlos Calderón, Miguel Rios Ráfales, María Jesús Nieto-Monge, Juan Ignacio Pardo, Rafael Moliner, María Jesús Lázaro
In this work, palladium-nickel nanoparticles supported on carbon nanofibers were synthesized, with metal contents close to 25 wt % and Pd:Ni atomic ratios near to 1:2. These catalysts were previously studied in order to determine their activity toward the oxygen reduction reaction. Before the deposition of metals, the carbon nanofibers were chemically treated in order to generate oxygen and nitrogen groups on their surface. Transmission electron microscopy analysis (TEM) images revealed particle diameters between 3 and 4 nm, overcoming the sizes observed for the nanoparticles supported on carbon black (catalyst Pd-Ni CB 1:2)...
October 18, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28334840/review-of-caffeine-related-fatalities-along-with-postmortem-blood-concentrations-in-51-poisoning-deaths
#2
Alan Wayne Jones
Publications reporting concentrations of caffeine in postmortem blood were reviewed if the cause of death was attributed to overdosing (poisoning) with drugs. Age and gender of the deceased, the manner of death (accident, suicide or undetermined) and types of co-ingested drugs were evaluated in relation to the concentrations of caffeine in blood (N = 51). The mean age (±SD) of the victims was 39 ± 17.8 years (range 18-84 years) and most were female (N = 31 or 61%). The difference in mean age of males (42 ± 17...
February 18, 2017: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/28317271/baclofen-and-alcohol-dependent-patients-a-real-risk-of-severe-self-poisoning
#3
David Boels, Caroline Victorri-Vigneau, Marie Grall-Bronnec, Ali Touré, Anais Garnier, Alain Turcant, Gaël Le Roux
Baclofen is often prescribed in high doses to fight cravings experienced by alcohol-dependent patients. Such an increase in the availability of baclofen is concerning. This study aimed to determine the change in number and profile of self-poisoning with baclofen over time, since baclofen has become increasingly popular, in order to describe the severity of self-poisoning with baclofen and to focus on co-existing alcohol use disorders and psychiatric illnesses determine predictors of severity. This was a retrospective study of self-poisoning with baclofen as reported by the western France Poison Control Center (PCC), which represents a population of more than 12 million people from January 2008 to March 2014...
March 19, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28288338/ghb-involved-crimes-among-intoxicated-patients
#4
Máté Kapitány-Fövény, Gábor Zacher, János Posta, Zsolt Demetrovics
INTRODUCTION: In recent years, the involvement of GHB in drug facilitated sexual assaults has been one of the most frequently studied aspects of GHB in both clinical and non-clinical settings. GHB-involved acquisitory crimes, however, can be mentioned as understudied research topics, as well as the poisoning severity properties of GHB. MEASURES: The medical reports of Péterfy Sándor Street Hospital Clinic and Casualty Centre's 408 GHB-intoxication cases (352 patients) were reviewed and registered...
March 10, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28284764/simultaneous-quantification-of-four-metabolites-of-sulfur-mustard-in-urine-samples-by-ultra-high-performance-liquid-chromatography-tandem-mass-spectrometry-after-solid-phase-extraction
#5
Chang-Cai Liu, Shi-Lei Liu, Hai-Ling Xi, Hui-Lan Yu, Shi-Kun Zhou, Gui-Lan Huang, Long-Hui Liang, Jing-Quan Liu
Four HD urinary metabolites including hydrolysis metabolite thiodiglycol (TDG), glutathione-derived metabolite 1,1'-sulfonylbis[2-S-(N-acetylcysteinyl)ethane] (SBSNAE), as well as the β-lyase metabolites 1,1'-sulfonylbis[2-(methylsulfinyl)ethane] (SBMSE) and 1-methylsulfinyl-2-[2-(methylthio) ethylsulfonyl]ethane (MSMTESE) are considered as important biomarkers for short-term retrospective detection of HD exposure. In this study, a single method for simultaneous quantification of the four HD metabolites in urine samples was developed using ultra high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS)...
February 27, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28260864/combined-application-of-dexamethasone-and-hyperbaric-oxygen-therapy-yields-better-efficacy-for-patients-with-delayed-encephalopathy-after-acute-carbon-monoxide-poisoning
#6
Wenping Xiang, Hui Xue, Baojun Wang, Yuechun Li, Jun Zhang, Changchun Jiang, Furu Liang, Jiangxia Pang, Lehua Yu
BACKGROUND: Delayed encephalopathy after acute carbon monoxide (CO) poisoning (DEACMP) commonly occurs after recovering from acute CO poisoning. This study was performed to assess the efficacy of the combined application of dexamethasone and hyperbaric oxygen (HBO) therapy in patients with DEACMP. PATIENTS AND METHODS: A total of 120 patients with DEACMP were recruited and randomly assigned into the experimental group (receiving dexamethasone 5 mg/day or 10 mg/day plus HBO therapy) and control group (HBO therapy as monotherapy)...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28257925/beneficial-effect-of-adipokinetic-hormone-on-neuromuscular-paralysis-in-insect-body-elicited-by-braconid-wasp-venom
#7
Haq Abdul Shaik, Archana Mishra, Dalibor Kodrík
The effect of Habrobracon hebetor venom and the role of the adipokinetic hormone (AKH) in poisoned adult females of the firebug Pyrrhocoris apterus were studied 24 and 48h after treatments. Venom application elicited total neuromuscular paralysis in firebugs, but the co-application of venom and Pyrap-AKH significantly reduced paralysis (up to 3.2 times) compared to the application of venom only. Although the mechanisms of their action are unknown, both agents might affect neuromuscular junctions. Venom application significantly increased the expression of both P...
February 28, 2017: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/28245010/carbon-dioxide-as-a-potential-danger-to-medical-rescue-teams-at-work-a-case-study
#8
Roland Podlewski, Włodzimierz Płotek, Małgorzata Grześkowiak, Tomasz Małkiewicz, Krystyna Frydrysiak, Zbigniew Żaba
Medical rescue teams might be exposed to the risk of accidental poisoning while performing rescue procedures. Exposure to the risk of lethal carbon dioxide (CO<sub>2</sub>) concentrations is a rare situation. This case study describes rescuing a patient who suffered from sudden cardiac arrest due to accidental CO<sub>2</sub> poisoning. The victim was finally evacuated and resuscitated, but the circumstances of the rescue operation point to the need to equip ambulances with carbon dioxide detectors and hermetic oxygen masks...
February 28, 2017: Medycyna Pracy
https://www.readbyqxmd.com/read/28242100/toxicodynetics-in-nordiazepam-and-oxazepam-overdoses
#9
L Sacre, S M Ali, A Villa, R Jouffroy, J-H Raphalen, R Garnier, F J Baud
OBJECTIVES: Toxicodynetics aims at defining the time-course of major clinical events in drug overdose. We report the toxicodynetics in mono-intoxications with oxazepam and nordiazepam. METHODS: Cases of oxazepam or nordiazepam overdoses collected at the Paris poison control centre from 1999 to 2014 on the basis of self-report. A particular attention was paid to eliminate the concomitant alcohol or psychotropic co-ingestions. The toxicodynetic parameters were assessed as previously described...
February 24, 2017: Annales Pharmaceutiques Françaises
https://www.readbyqxmd.com/read/28225493/acetylcholinesterase-inhibitor-treatment-alleviated-cognitive-impairment-caused-by-delayed-encephalopathy-due-to-carbon-monoxide-poisoning-two-case-reports-and-a-review-of-the-literature
#10
REVIEW
Kumi Yanagiha, Kazuhiro Ishii, Akira Tamaoka
INTRODUCTION: Delayed encephalopathy due to carbon monoxide (CO) poisoning can even occur in patients with mild symptoms of acute CO poisoning. Some cases taking conventional hyperbaric oxygen (HBO) therapy or steroid-pulse therapy may be insufficient, and AchEI may be effective. PATIENT CONCERNS AND DIAGNOSES: We report two cases of delayed encephalopathy after acute CO poisoning involving two women aged 69 (Case 1) and 60 years (Case 2) whose cognitive function improved with acetylcholinesterase inhibitor (AchEI) treatment...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28221722/self-supported-ptaup-alloy-nanotube-arrays-with-enhanced-activity-and-stability-for-methanol-electro-oxidation
#11
Lili Zhang, Liang-Xin Ding, Hongbin Chen, Dongdong Li, Suqing Wang, Haihui Wang
Inhibiting CO formation can more directly address the problem of CO poisoning during methanol electro-oxidation. In this study, 1D self-supported porous PtAuP alloy nanotube arrays (ANTAs) are synthesized via a facile electro-codeposition approach and present enhanced activity and improved resistance to CO poisoning through inhibiting CO formation (non-CO pathway) during the methanol oxidation reaction in acidic medium. This well-controlled Pt-/transition metal-/nonmetal ternary nanostructure exhibits a specific electroactivity twice as great as that of PtAu alloy nanotube arrays and Pt/C...
February 21, 2017: Small
https://www.readbyqxmd.com/read/28195459/ternary-pt9rhfex-nanoscale-alloys-as-highly-efficient-catalysts-with-enhanced-activity-and-excellent-co-poisoning-tolerance-for-ethanol-oxidation
#12
Peng Wang, Shibin Yin, Ying Wen, Zhiqun Tian, Ningzhang Wang, Julian Key, Shuangbao Wang, Pei Kang Shen
To address the problems of high cost and poor stability of anode catalysts in direct ethanol fuel cells (DEFCs), ternary nanoparticles Pt9RhFex (x = 1, 3, 5, 7, and 9) supported on carbon powders (XC-72R) have been synthesized via a facile method involving reduction by sodium borohydride followed by thermal annealing in N2 at ambient pressure. The catalysts are physically characterized by X-ray diffraction, scanning transmission electron microscopy, and X-ray photoelectron spectroscopy, and their catalytic performance for the ethanol oxidation reaction (EOR) is evaluated by cyclic and linear scan voltammetry, CO-stripping voltammograms, and chronopotentiometry...
March 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28167472/mri-and-clinical-manifestations-of-delayed-encephalopathy-after-carbon-monoxide-poisoning
#13
Xiahong Wang, Zhenyu Li, Jacqueline Berglass, Wenlong He, Jianmin Zhao, Min Zhang, Chongyang Gao, Caixia Zhang, Huimin Zhang, Xuewei Yi
To explore the relationship between the clinical manifestations and functional magnetic resonance images of delayed encephalopathy after carbon monoxide intoxication. Six patients received the MRI were diagnosed with delayed encephalopathy after carbon monoxide (CO) poisoning. Clinical manifestations were observed in each patient. MRI revealed multiple lesions. The majority of the lesions were located in the globus pallidus, sub cortical white matter, and basal ganglia. The cognitive injury, akinetic mutism, fecal and uroclepsia, forced crying, forced laughing and extra pyramidal syndromes such as chorea and parkinsonism were manifested in clinic...
November 2016: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28163920/risk-factors-for-the-delayed-onset-of-neuropsychologic-sequelae-following-carbon-monoxide-poisoning
#14
Takeshi Kitamoto, Masanobu Tsuda, Masaki Kato, Fukuki Saito, Yoshito Kamijo, Toshihiko Kinoshita
AIM: Carbon monoxide (CO) poisoning often manifests delayed neuropsychological sequelae. The risks and preventive factors for the development of delayed neuropsychological sequelae are controversial at present. The purpose of this retrospective study was to assess the risk factors for this condition. METHOD: We studied 81 patients with CO poisoning admitted to the Critical Care and Emergency Medicine Center at the Kansai Medical University from 2006 to 2012. All patients (64 males and 17 females; average age, 45...
October 2016: Acute Med Surg
https://www.readbyqxmd.com/read/28158885/breaking-bad-delirium-methamphetamine-and-boric-acid-toxicity-with-hallucinations-and-pseudosepsis
#15
Kayla Johnson, Joanna L Stollings, E Wesley Ely
OBJECTIVES: A 30-year-old patient presented with hallucinations and profound shock. He was initially misdiagnosed as having severe sepsis; once ingestions were considered, he was diagnosed as potentially having arsenic toxicity. SUMMARY: The clinical story reveals many instructional lessons that could aid in the evaluation and management of future patients. This man presented with large amounts of blue crystals around his nose and lips from inhaling and eating boric acid (an ant poison) so he could, as he put it, kill the ants "pouring into my mouth and nose and up into my brain...
February 2017: Southern Medical Journal
https://www.readbyqxmd.com/read/28151889/early-white-matter-injuries-in-patients-with-acute-carbon-monoxide-intoxication-a-tract-specific-diffusion-kurtosis-imaging-study-and-strobe-compliant-article
#16
Ping-Huei Tsai, Ming-Chung Chou, Shih-Wei Chiang, Hsiao-Wen Chung, Hua-Shan Liu, Hung-Wen Kao, Cheng-Yu Chen
Evaluation of acute white matter injuries caused by carbon monoxide (CO) poisoning can be limited by conventional magnetic resonance (MR) imaging. We aim to evaluate the feasibility of diffusion kurtosis imaging (DKI) for early detection of white matter alterations in patients with acute CO intoxication.A total of 30 subjects including 15 acute CO patients and 15 age- and sex-matched healthy volunteers were enrolled in this study. MR examinations were performed on a 3T MR scanner within 8 days after CO intoxication...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28133917/electrocatalytic-co2-reduction-to-formate-at-low-overpotentials-on-electrodeposited-pd-films-stabilized-performance-by-suppression-of-co-formation
#17
Fengling Zhou, Haitao Li, Maxime Fournier, Douglas Macfarlane
Palladium (Pd) nanoparticles have been proven to effectively catalytic CO2 reduction. However CO, one of the most important products in the CO2 reduction sequence, has strong affinity for the Pd surface and rapidly poisons the catalytic site. In this research, an electrodeposited Pd film is shown to exhibit high activity for CO2 reduction to formate with suppression of CO formation at low overpotentials. The substrates, electrodeposition process and the post treatment of the Pd films significantly affect the CO2 reduction pathway...
January 29, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28129435/presence-of-alcohol-cocaine-and-other-drugs-in-suicide-and-motor-vehicle-crash-decedents-ages-18-to-54
#18
Kenneth R Conner, Sarah Lathrop, Raul Caetano, Timothy Wiegand, Kimberly Kaukeinen, Kurt B Nolte
BACKGROUND: Use of alcohol and select other drugs confer risk for injury deaths, yet how such use compares in different types of injury deaths including suicide and fatal motor vehicle collisions (MVCs) is unclear. METHODS: Individuals in New Mexico ages 18 to 54 that died in 2012 by suicide or MVC were analyzed. Toxicology results were used to code the presence of alcohol and the presence of 1 or more drugs including cocaine, opiate (oxycodone, heroin, etc.), or amphetamine or methamphetamine, yielding a 4-category variable: Alcohol + Drug, Alcohol (without drug), Drug (without alcohol), and Neither (ref)...
January 27, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28120705/investigation-of-isoindolo-2-1-a-quinoxaline-6-imines-as-topoisomerase-i-inhibitors-with-molecular-modeling-methods
#19
Balazs Balogh, Anna Carbone, Virginia Spanò, Alessandra Montalbano, Paola Barraja, Stella Cascioferro, Patrizia Diana, Barbara Parrino
BACKGROUND: Isoindolo[2,1-a]quinoxalines constitute an important class of compounds which demonstrated potent antiproliferative activity against different human tumor cell lines and topoisomerase I inhibition. In particular, their water soluble imine or iminium salts recently synthesized, showed potent growth inhibitory effect on NCI-60 tumor cell line panel and biological studies performed on the most active compounds demonstrated that they cause DNA damage via topoisomerase I poisoning...
January 23, 2017: Current Computer-aided Drug Design
https://www.readbyqxmd.com/read/28119079/deltamethrin-increases-the-fat-accumulation-in-3t3-l1-adipocytes-and-caenorhabditis-elegans
#20
Peiyi Shen, Tsung-Hsiu Hsieh, Yiren Yue, Quancai Sun, John M Clark, Yeonhwa Park
Research has shown that permethrin, a Type-I pyrethroid, increases triglyceride (fat) accumulation in adipocytes. Little is known, however, about any similar effect of deltamethrin, a Type-II pyrethroid, which produces a distinct syndrome of poisoning in mammals compared with permethrin. This study was therefore aimed to explore the role of deltamethrin on fat accumulation in 3T3-L1 adipocytes and Caenorhabditis elegans. Deltamethrin (10 μM) significantly increased the fat accumulation in 3T3-L1 adipocytes and wild type C...
March 2017: Food and Chemical Toxicology
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