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Methanol poisoning

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https://www.readbyqxmd.com/read/29027721/n-doped-carbon-nano-fibrous-network-derived-from-bacterial-cellulose-for-the-loading-of-pt-nanoparticles-for-methanol-oxidation-reaction
#1
Fanshu Yuan, Yang Huang, Mengmeng Fan, Chuntao Chen, Jieshu Qian, Qingli Hao, Jiazhi Yang, Dongping Sun
It is still challenging to prepare Pt based catalysts with high activity and durability with low cost on a large scale for methanol oxidation reaction. The key is to look for suitable supporting materials. In this paper, we report a facile preparation of N-doped carbon nano-fibrous network by annealing a gel containing two inexpensive and eco-friendly precursors, i.e. bacterial cellulose and urea, for the loading of Pt nanoparticles. An undoped analog was also prepared for comparison. Meanwhile, we evaluated the effect of the annealing temperature on the performance of the catalysts...
October 13, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29026846/intracranial-hemorrhage-in-methanol-toxicity-challenging-the-probable-heparin-effect-during-hemodialysis
#2
Hossein Hassanian-Moghaddam, Hooman Bahrami-Motlagh, Nasim Zamani, Seyed Amirhossein Fazeli, Behdad Behnam
Brain hemorrhages are rare complications of acute methanol poisoning. There is a debate on association of brain hemorrhage in methanol toxicity and application of systemic anticoagulation during hemodialysis (HD). A 70-year-old male presented to us with severe metabolic acidosis and a methanol level of 7.6 mg/dL. Ethanol and folinic acid were administered, and HD was performed. Brain computed tomography (CT) scan which was normal on presentation showed extensive bilateral subcortical supratentorial hypodensities on the 3(rd) day after commencing the treatment...
July 2017: Journal of Research in Pharmacy Practice
https://www.readbyqxmd.com/read/29021915/optical-coherence-tomography-findings-in-methanol-toxicity
#3
Kendra A Klein, Alexis K Warren, Caroline R Baumal, Thomas R Hedges
BACKGROUND: Methanol toxicity poses a significant public health problem in developing countries, and in Southeast Asia, where the most common source of poisoning is via adulterated liquor in local drinks. Methanol toxicity can have devastating visual consequences and retinal specialists should be aware of the features of this toxic optic neuropathy. The authors report a case of severe systemic methanol toxicity and relatively mild optic neuropathy demonstrating unique retinal changes on optical coherence tomography (OCT)...
2017: International Journal of Retina and Vitreous
https://www.readbyqxmd.com/read/28929754/spectro-electrochemical-examination-of-the-formation-of-dimethyl-carbonate-from-co-and-methanol-at-different-electrode-materials
#4
Marta C Figueiredo, Vinh Trieu, Stefanie Eiden, Marc T M Koper
In this work, we report a fundamental mechanistic study of the electrochemical oxidative carbonylation of methanol with CO for the synthesis of dimethyl carbonate on metallic electrodes at low overpotentials. For the first time, the reaction was shown to take place on the metallic catalysts without need of oxidized metals or additives. Moreover, in-situ spectroelectrochemical techniques were applied to this electrosynthesis reaction in order to reveal the reaction intermediates and to shed light into the reaction mechanism...
October 3, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28832029/poisoning-deaths-in-poland-types-and-frequencies-reported-in-%C3%A5-%C3%A3-d%C3%A5%C2%BA-krak%C3%A3-w-sosnowiec-gda%C3%A5-sk-wroc%C3%A5-aw-and-pozna%C3%A5-during-2009-2013
#5
Anna Krakowiak, Anna Piekarska-Wijatkowska, Katarzyna Kobza-Sindlewska, Anna Rogaczewska, Piotr Politański, Piotr Hydzik, Beata Szkolnicka, Tomasz Kłopotowski, Sebastian Picheta, Barbara Porębska, Andrzej Antończyk, Wojciech Waldman, Jacek Sein Anand, Eryk Matuszkiewicz, Magdalena Łukasik-Głębocka
OBJECTIVES: The aim of this study has been to assess the characteristics of acute poisoning deaths in Poland over a period of time 2009-2013. MATERIAL AND METHODS: The analysis was based on the data obtained from the patient records stored in toxicology departments in 6 cities - Łódź, Kraków, Sosnowiec, Gdańsk, Wrocław and Poznań. Toxicological analyses were routinely performed in blood and/or urine. Major toxic substances were classified to one of the following categories: pharmaceuticals, alcohol group poisonings (ethanol and other alcohols), gases, solvents, drugs of abuse, pesticides, metals, mushrooms, others...
August 22, 2017: International Journal of Occupational Medicine and Environmental Health
https://www.readbyqxmd.com/read/28820222/quasi-zero-dimensional-cobalt-doped-ceo2-dots-on-pd-catalysts-for-alcohol-electro-oxidation-with-enhanced-poisoning-tolerance
#6
Qiang Tan, Haiyan Zhu, Shengwu Guo, Yuanzhen Chen, Tao Jiang, Chengyong Shu, Shaokun Chong, Benjamin Hultman, Yongning Liu, Gang Wu
Deactivation of an anode catalyst resulting from the poisoning of COad-like intermediates is one of the major problems for methanol and ethanol electro-oxidation reactions (MOR & EOR), and remains a grand challenge towards achieving high performance for direct alcohol fuel cells (DAFCs). Herein, we report a new approach for the preparation of ultrafine cobalt-doped CeO2 dots (Co-CeO2, d = 3.6 nm), which can be an effective anti-poisoning promoter for Pd catalysts towards MOR and EOR in alkaline media. Compared to Pd/CeO2 and pure Pd, the hybrid Pd/Co-CeO2 nanocomposite catalyst exhibited a much enhanced activity and remarkable anti-poisoning ability for both MOR and EOR...
August 31, 2017: Nanoscale
https://www.readbyqxmd.com/read/28752295/nmr-based-metabolomics-reveals-the-metabolite-profiles-of-vibrio-parahaemolyticus-under-ferric-iron-stimulation
#7
Jun Zhou, Chenyang Lu, Dijun Zhang, Chennv Ma, Xiurong Su
Vibrio parahaemolyticus is a halophilic bacterium endemic to coastal areas, and its pathogenicity has caused widespread seafood poisoning. In our previous research, the protein expression of V. parahaemolyticus in Fe(3+) medium was determined using isobaric tags for relative and absolute quantitation (iTRAQ). Here, nuclear magnetic resonance (NMR) was used to detect changes in the V. parahaemolyticus metabolome. NMR spectra were obtained using methanol-water extracts of intracellular metabolites from V. parahaemolyticus under various culture conditions, and 62 metabolites were identified, including serine, arginine, alanine, ornithine, tryptophan, glutamine, malate, NAD(+), NADP(+), oxypurinol, xanthosine, dCTP, uracil, thymine, hypoxanthine, and betaine...
August 2017: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/28741355/pt-nanoparticles-densely-coated-on-sno2-covered-multiwalled-carbon-nanotubes-with-excellent-electrocatalytic-activity-and-stability-for-methanol-oxidation
#8
Meihua Huang, Jianshuo Zhang, Chuxin Wu, Lunhui Guan
A new electrocatalyst exhibiting enhanced activity and stability is designed from SnO2-covered multiwalled carbon nanotubes coated with 85 wt % ratio Pt nanoparticles (NPs). This catalyst showed a mass activity 6.2 times as active as that of the commercial Pt/C for methanol oxidation, owing to the unique one-dimensional structure. Moreover, the durability and antipoisoning ability were also improved greatly. The enhanced intrinsic performance was ascribed to the densely connected networks of Pt NPs on the SnO2 NPs...
August 16, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28730555/intermittent-versus-continuous-renal-replacement-therapy-in-acute-methanol-poisoning-comparison-of-clinical-effectiveness-in-mass-poisoning-outbreaks
#9
Sergey Zakharov, Jan Rulisek, Olga Nurieva, Katerina Kotikova, Tomas Navratil, Martin Komarc, Daniela Pelclova, Knut Erik Hovda
BACKGROUND: Intermittent hemodialysis (IHD) is the modality of choice in the extracorporeal treatment (ECTR) of acute methanol poisoning. However, the comparative clinical effectiveness of intermittent versus continuous modalities (CRRT) is unknown. During an outbreak of mass methanol poisoning, we therefore studied the effect of IHD versus CRRT on mortality and the prevalence of visual/central nervous system (CNS) sequelae in survivors. METHODS: The study was designed as prospective observational cohort study...
December 2017: Annals of Intensive Care
https://www.readbyqxmd.com/read/28726376/dentritic-cuptpd-catalyst-for-enhanced-electrochemical-oxidation-of-methanol
#10
Xiaoqin Shi, Ying Wen, Xiaoyu Guo, Yuxia Pan, Yuanyuan Ji, Ye Ying, Haifeng Yang
The CuPtPd catalyst is designed and synthesized successfully via directly reducing metal ions. The composition, morphology, and structure of the as-prepared CuPtPd nanohybrids are characterized by scanning electron microscopy and transmission electron microscopy, energy-dispersive spectrometry, selected-area electron diffraction, X-ray diffraction, and inductively coupled plasma atomic emission spectrometry. By comparison of the electrocatalytic properties of the ternary CuPtPd catalyst with bimetallic catalysts, we find that ternary nanocomposites perform better electrocatalytic and antipoisoning activity toward oxidation of methanol...
August 9, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28724204/gait-and-balance-impairment-after-acute-methanol-poisoning
#11
Kamila Peterová, Hana Brožová, Jiří Klempíř, Irena Lišková, Ondřej Bezdíček, Petr Ridzoň, Manuela Vaněčková, Sergej Zakharov, Daniela Pelclová, Michal Miovský, Evžen Růžička
Neurological sequelae including gait impairment were reported in survivors after methanol intoxication; however, no systematic study has been published so far. We aimed to analyse gait and balance impairment in a group of Czech methanol poisoning survivors. We examined 43 patients (age 46±13 years) 2-8 months after methanol poisoning and 43 healthy controls. Investigations contained a shortened version of Falls Efficacy Scale (FES), clinical tests of gait and balance including Timed Up and Go test (TUG) and gait analysis using GaitRite(®) system, neurological and neuropsychological examination, brain imaging, EMG and tests of alcohol consumption...
July 19, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28696398/maitotoxin-4-a-novel-mtx-analog-produced-by-gambierdiscus-excentricus
#12
Francesco Pisapia, Manoëlla Sibat, Christine Herrenknecht, Korian Lhaute, Greta Gaiani, Pierre-Jean Ferron, Valérie Fessard, Santiago Fraga, Silvia M Nascimento, R Wayne Litaker, William C Holland, Catherine Roullier, Philipp Hess
Maitotoxins (MTXs) are among the most potent toxins known. These toxins are produced by epi-benthic dinoflagellates of the genera Gambierdiscus and Fukuyoa and may play a role in causing the symptoms associated with Ciguatera Fish Poisoning. A recent survey revealed that, of the species tested, the newly described species from the Canary Islands, G. excentricus, is one of the most maitotoxic. The goal of the present study was to characterize MTX-related compounds produced by this species. Initially, lysates of cells from two Canary Island G...
July 11, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28656759/single-atomic-ruthenium-catalytic-sites-on-nitrogen-doped-graphene-for-oxygen-reduction-reaction-in-acidic-medium
#13
Chenhao Zhang, Junwei Sha, Huilong Fei, Mingjie Liu, Sadegh Yazdi, Jibo Zhang, Qifeng Zhong, Xiaolong Zou, Naiqin Zhao, Haisheng Yu, Zheng Jiang, Emilie Ringe, Boris I Yakobson, Juncai Dong, Dongliang Chen, James M Tour
The cathodic oxygen reduction reaction (ORR) is essential in the electrochemical energy conversion of fuel cells. Here, through the NH3 atmosphere annealing of a graphene oxide (GO) precursor containing trace amounts of Ru, we have synthesized atomically dispersed Ru on nitrogen-doped graphene that performs as an electrocatalyst for the ORR in acidic medium. The Ru/nitrogen-doped GO catalyst exhibits excellent four-electron ORR activity, offering onset and half-wave potentials of 0.89 and 0.75 V, respectively, vs a reversible hydrogen electrode (RHE) in 0...
July 25, 2017: ACS Nano
https://www.readbyqxmd.com/read/28655383/mixed-isopropanol-methanol-intoxication-following-ingestion-of-alcohol-based-hand-rub%C3%A2-solution%C3%A2
#14
Gordon Chan, Jones Chan, Cheuk-Chun Szeto, Kai-Ming Chow
Traditionally, ingestion of alcohol-based hand rub solution results in isopropanol poisoning, which has a low toxicity. We describe a case of combined methanol and isopropanol intoxication by ingestion of alcohol-based hand rub solution. Metabolic acidosis was absent in our patient, presumably because formic acid production is blocked by isopropanol, which inhibits alcohol dehydrogenase. Our case highlights the importance of considering methanol intoxication in patients who ingested alcohol-based hand rub solution, even when there is no metabolic acidosis, and timely removal of the toxic alcohols by dialysis in these patients would prevent permanent retinal damage...
June 28, 2017: Clinical Nephrology
https://www.readbyqxmd.com/read/28573226/evaluation-of-the-chelating-effect-of-methanolic-extract-of-coriandrum-sativum-and-its-fractions-on-wistar-rats-poisoned-with-lead-acetate
#15
Miguel Ángel Téllez-López, Gabriela Mora-Tovar, Iromi Marlen Ceniceros-Méndez, Concepción García-Lujan, Cristo Omar Puente-Valenzuela, María Del Carmen Vega-Menchaca, Luis Benjamín Serrano-Gallardo, Rubén García Garza, Javier Morán-Martínez
BACKGROUND: The rate of lead poisoning has decreased in recent years due to increased health control in industries that use this metal. However, it is still a public health problem worldwide. The use of various plants with chelating properties has been a topic of research today. In traditional medicine, it is said that Coriandrum sativum has chelating properties, but there is no scientific evidence to support this fact. The purpose of this research is to evaluate the chelating effect of methanol extract of coriander and its fractions on Wistar rats intoxicated with lead...
2017: African Journal of Traditional, Complementary, and Alternative Medicines: AJTCAM
https://www.readbyqxmd.com/read/28540206/acute-kidney-injury-from-different-poisonous-substances
#16
Rubina Naqvi
AIM: To report our experience of acute kidney injury (AKI) developed after exposure to poisonous substance. METHODS: Retrospective study where data was collected from case records of patients coming to this institute during January 1990 to May 2016. This institution is a tertiary care center for renal care in the metropolitan city of Karachi, Pakistan. History of ingested substance, symptoms on presentation, basic laboratory tests on arrival, mode of treatment and outcome were recorded from all patients and are presented here...
May 6, 2017: World Journal of Nephrology
https://www.readbyqxmd.com/read/28485057/affinity-capillary-electrophoresis-and-density-functional-theory-study-of-noncovalent-interactions-of-cyclic-peptide-gly-6-antamanide-with-small-cations
#17
Sachin Pangavhane, Stanislav Böhm, Emanuel Makrlík, Paolo Ruzza, Václav Kašička
ACE and density functional theory were employed to study the noncovalent interactions of cyclic decapeptide glycine-6-antamanide ([Gly(6) ]AA), synthetic derivative of native antamanide (AA) peptide from the deadly poisonous fungus Amanita phalloides, with small cations (Li(+) , Rb(+) , Cs(+) , NH4(+) , and Ca(2+) ) in methanol. The strength of these interactions was quantified by the apparent stability constants of the appropriate complexes determined by ACE. The stability constants were calculated using the nonlinear regression analysis of the dependence of the effective electrophoretic mobility of [Gly(6) ]AA on the concentration of the above ions in the BGE (methanolic solution of 20 mM chloroacetic acid, 10 mM Tris, pHMeOH 7...
August 2017: Electrophoresis
https://www.readbyqxmd.com/read/28452410/hollow-carbon-nanopolyhedra-for-enhanced-electrocatalysis-via-confined-hierarchical-porosity
#18
Xiaokai Song, Linli Guo, Xuemei Liao, Jian Liu, Jianhua Sun, Xiaopeng Li
A novel strategy for the fabrication of hollow Co and N-codoped carbon nanopolyhedra (H-CoNC) from metal-organic framework (MOF) using in situ evaporation of ZnO nanosphere templates is proposed. The excess Zn supply during the pyrolysis process is found beneficial in terms of high nitrogen (≈9.75 at%), relatively homogenous CoN bonding, and the electrochemically accessible hierarchical porous system. Compared with other reported "solid" CoNC of identical surface areas, the newly developed H-CoNC shows enhanced kinetic current in 0...
April 28, 2017: Small
https://www.readbyqxmd.com/read/28451351/a-new-class-of-cu-zno-catalysts-derived-from-zincian-georgeite-precursors-prepared-by-co-precipitation
#19
Paul J Smith, Simon A Kondrat, Philip A Chater, Benjamin R Yeo, Greg M Shaw, Li Lu, Jonathan K Bartley, Stuart H Taylor, Michael S Spencer, Christopher J Kiely, Gordon J Kelly, Colin W Park, Graham J Hutchings
Zincian georgeite, an amorphous copper-zinc hydroxycarbonate, has been prepared by co-precipitation using acetate salts and ammonium carbonate. Incorporation of zinc into the georgeite phase and mild ageing conditions inhibits crystallisation into zincian malachite or aurichalcite. This zincian georgeite precursor was used to prepare a Cu/ZnO catalyst, which exhibits a superior performance to a zincian malachite derived catalyst for methanol synthesis and the low temperature water-gas shift (LTS) reaction. Furthermore, the enhanced LTS activity and stability in comparison to that of a commercial Cu/ZnO/Al2O3 catalyst, indicates that the addition of alumina as a stabiliser may not be required for the zincian georgeite derived Cu/ZnO catalyst...
March 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/28426049/a-pt-co3o4-cd-electrocatalyst-with-enhanced-electrocatalytic-performance-and-resistance-to-co-poisoning-achieved-by-carbon-dots-and-co3o4-for-direct-methanol-fuel-cells
#20
Yue Sun, Yunjie Zhou, Cheng Zhu, Lulu Hu, Mumei Han, Aoqi Wang, Hui Huang, Yang Liu, Zhenhui Kang
Highly efficient electrocatalysts remain huge challenges in direct methanol fuel cells (DMFCs). Here, a Pt-Co3O4-CDs/C composite was fabricated as an anode electrocatalyst with low Pt content (12 wt%) by using carbon dots (CDs) and Co3O4 nanoparticles as building blocks. The Pt-Co3O4-CDs/C composite catalyst shows a significantly enhanced electrocatalytic activity (1393.3 mA mg(-1) Pt), durability (over 4000 s) and CO-poisoning tolerance. The superior catalytic activity should be attributed to the synergistic effect of CDs, Pt and Co3O4...
May 4, 2017: Nanoscale
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