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Methanol poisoning

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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
#1
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
#2
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
#3
Sachin Pangavhane, Stanislav Böhm, Emanuel Makrlík, Paolo Ruzza, Václav Kašička
ACE and density functional theory (DFT) were employed to study the noncovalent interactions of cyclic decapeptide glycine-6-antamanide ([Gly(6) ]AA), synthetic derivative of native antamanide peptide from the deadly poisonous fungus Amanita phaloides, 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...
May 9, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28452410/hollow-carbon-nanopolyhedra-for-enhanced-electrocatalysis-via-confined-hierarchical-porosity
#4
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
#5
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
#6
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
https://www.readbyqxmd.com/read/28366392/toxicity-screening-of-13-gambierdiscus-strains-using-neuro-2a-and-erythrocyte-lysis-bioassays
#7
Francesco Pisapia, William C Holland, D Ransom Hardison, R Wayne Litaker, Santiago Fraga, Tomohiro Nishimura, Masao Adachi, Lam Nguyen-Ngoc, Véronique Séchet, Zouher Amzil, Christine Herrenknecht, Philipp Hess
Species in the epi-benthic dinoflagellate genus Gambierdiscus produce ciguatoxins (CTXs) and maitotoxins (MTXs), which are among the most potent marine toxins known. Consumption of fish contaminated with sufficient quantities of CTXs causes Ciguatera Fish Poisoning (CFP), the largest cause of non-bacterial food poisoning worldwide. Maitotoxins, which can be found in the digestive system of fish, could also contribute to CFP if such tissues are consumed. Recently, an increasing number of Gambierdiscus species have been identified; yet, little is known about the variation in toxicity among Gambierdiscus strains or species...
March 2017: Harmful Algae
https://www.readbyqxmd.com/read/28344362/positive-serum-ethanol-concentration-on-admission-to-hospital-as-the-factor-predictive-of-treatment-outcome-in-acute-methanol-poisoning
#8
Sergey Zakharov, Olga Nurieva, Katerina Kotikova, Jaromir Belacek, Tomas Navratil, Daniela Pelclova
ABSTRACT: Mass methanol poisonings present a serious problem for health systems worldwide, with poor outcome associated with delayed treatment. Positive pre-hospital serum ethanol concentration may have predictive value as the prognostic factor of the treatment outcome. We studied the effect of positive serum ethanol level on admission to hospital on survival in patients treated during the Czech methanol outbreak during 2012-2014. Cross-sectional cohort study was performed in 100 hospitalized patients with confirmed methanol poisoning...
2017: Monatshefte Für Chemie
https://www.readbyqxmd.com/read/28335315/oxidation-of-co-and-methanol-on-pd-ni-catalysts-supported-on-different-chemically-treated-carbon-nanofibers
#9
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/28331544/vapor-fed-bio-hybrid-fuel-cell
#10
Marcus S Benyamin, Justin P Jahnke, David M Mackie
BACKGROUND: Concentration and purification of ethanol and other biofuels from fermentations are energy-intensive processes, with amplified costs at smaller scales. To circumvent the need for these processes, and to potentially reduce transportation costs as well, we have previously investigated bio-hybrid fuel cells (FCs), in which a fermentation and FC are closely coupled. However, long-term operation requires strictly preventing the fermentation and FC from harming each other. We introduce here the concept of the vapor-fed bio-hybrid FC as a means of continuously extracting power from ongoing fermentations at ambient conditions...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28291652/cost-effectiveness-of-hospital-treatment-and-outcomes-of-acute-methanol-poisoning-during-the-czech-republic-mass-poisoning-outbreak
#11
Jan Rulisek, Martin Balik, Ferdinand Polak, Petr Waldauf, Daniela Pelclova, Jan Belohlavek, Sergey Zakharov
PURPOSE: During an outbreak of mass methanol poisoning in the Czech Republic in 2012-2014, we compared the total hospital costs and one-year medical costs in the patients treated with different antidotes (fomepizole versus ethanol) and modalities of hemodialysis (intermittent hemodialysis, IHD, versus continuous renal replacement therapy, CRRT). METHODS: Cross-sectional study in 106 patients with confirmed diagnosis treated in 30 ICU settings. For each patient, the following data were analyzed: admission laboratory data, GCS, PSS, ICU length of stay, organ failures, treatment, outcome, and total hospital costs...
June 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28262185/cognitive-sequelae-of-methanol-poisoning-involve-executive-dysfunction-and-memory-impairment-in-cross-sectional-and-long-term-perspective
#12
O Bezdicek, J Michalec, M Vaneckova, J Klempir, I Liskova, Z Seidl, B Janikova, M Miovsky, J Hubacek, P Diblik, P Kuthan, A Pilin, I Kurcova, Z Fenclova, V Petrik, T Navratil, D Pelclova, S Zakharov, E Ruzicka
Methanol poisoning leads to lesions in the basal ganglia and subcortical white matter, as well as to demyelination and atrophy of the optic nerve. However, information regarding cognitive deficits in a large methanol sample is lacking. The principal aim of the present study was to identify the cognitive sequelae of methanol poisoning and their morphological correlates. A sample of 50 patients (METH; age 48 ± 13 years), 3-8 months after methanol poisoning, and 57 control subjects (CS; age 49 ± 13 years) were administered a neuropsychological battery...
March 2017: Alcohol
https://www.readbyqxmd.com/read/28221722/self-supported-ptaup-alloy-nanotube-arrays-with-enhanced-activity-and-stability-for-methanol-electro-oxidation
#13
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...
May 2017: Small
https://www.readbyqxmd.com/read/28206825/letter-in-response-to-efficiency-of-acidemia-correction-on-intermittent-versus-continuous-hemodialysis-in-acute-methanol-poisoning
#14
COMMENT
Lindsay M Fox, Mark K Su, Lewis R Goldfrank
No abstract text is available yet for this article.
April 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28206824/reply-to-letter-in-response-to-efficiency-of-acidemia-correction-on-intermittent-versus-continuous-hemodialysis-in-acute-methanol-poisoning
#15
COMMENT
Sergey Zakharov, Darren M Roberts, Knut Erik Hovda
No abstract text is available yet for this article.
April 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28197597/the-effect-of-sodium-species-on-methanol-synthesis-and-water-gas-shift-cu-zno-catalysts-utilising-high-purity-zincian-georgeite
#16
Simon A Kondrat, Paul J Smith, James H Carter, James S Hayward, Geoffrey J Pudge, Greg Shaw, Michael S Spencer, Jonathan K Bartley, Stuart H Taylor, Graham J Hutchings
The effect of sodium species on the physical and catalytic properties of Cu/ZnO catalysts derived from zincian georgeite has been investigated. Catalysts prepared with <100 ppm to 2.1 wt% Na(+), using a supercritical CO2 antisolvent technique, were characterised and tested for the low temperature water-gas shift reaction and also CO2 hydrogenation to methanol. It was found that zincian georgeite catalyst precursor stability was dependent on the Na(+) concentration, with the 2.1 wt% Na(+)-containing sample uncontrollably ageing to malachite and sodium zinc carbonate...
April 28, 2017: Faraday Discussions
https://www.readbyqxmd.com/read/28191327/transdermal-spirit-methanol-poisoning-a-case-report
#17
Hatice Dogan, Banu Yilmaz Karakus, Kubra Serefoglu Cabuk, Ozlem Uzun, Huseyin Yenice, Aysun Orucoglu
INTRODUCTION: Methanol is a highly toxic substance and methanol poisoning results in severe health situations. Methanol poisoning occurs when it is consumed by various methods such as orally, by inhalation, and transdermally. Transdermal poisoning is rarely seen and causes severe health complications. CASE PRESENTATION: A 59-year-old male patient was admitted to the emergency room due to blurred vision and knee pain. He had wrapped alcohol soaked cotton around his knees because of pain, and left it for 10 hours at night...
November 2016: Iranian Red Crescent Medical Journal
https://www.readbyqxmd.com/read/28168440/can-duration-of-hemodialysis-be-estimated-based-on-the-on-arrival-laboratory-tests-and-clinical-manifestations-in-methanol-poisoned-patients
#18
Abdolkarim Pajoumand, Nasim Zamani, Hossein Hassanian-Moghaddam, Shahin Shadnia
PURPOSE: We aimed to evaluate the efficacy of Lachance formula and more readily available clinical or laboratory factors (other than serum methanol level) in prediction of the needed time for hemodialysis in methanol-poisoned patients. METHODS: In a retrospective study, all methanol-poisoned patients referred to us between March 2008 and March 2016 were enrolled. The patients' demographic characteristics, on-arrival vital signs, signs/symptoms, and laboratory tests were evaluated for factors that could prognosticate the dialysis duration...
February 6, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28165820/leukotriene-mediated-neuroinflammation-toxic-brain-damage-and-neurodegeneration-in-acute-methanol-poisoning
#19
Sergey Zakharov, Katerina Kotikova, Olga Nurieva, Jiri Hlusicka, Petr Kacer, Pavel Urban, Manuela Vaneckova, Zdenek Seidl, Pavel Diblik, Pavel Kuthan, Tomas Navratil, Daniela Pelclova
CONTEXT: The role of neuroinflammation in methanol-induced toxic brain damage has not been studied. OBJECTIVE: We studied acute concentrations and the dynamics of leukotrienes (LT) in serum in hospitalized patients with acute methanol poisoning and in survivors. METHODS: Series of acute cysteinyl-LT and LTB4 concentration measurements were performed in 28/101 hospitalized patients (mean observation time: 88 ± 20 h). In 36 survivors, control LT measurements were performed 2 years after discharge...
April 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28106251/affinity-capillary-electrophoresis-and-quantum-mechanical-calculations-applied-to-investigation-of-gly-6-antamanide-binding-with-sodium-and-potassium-ions
#20
Sachin Pangavhane, Stanislav Böhm, Emanuel Makrlík, Paolo Ruzza, Václav Kašička
Affinity capillary electrophoresis in a free solution (ACE) and quantum mechanical density functional theory (DFT) have been applied to the investigation of interactions of glycine-6-antamanide ([Gly(6) ]AA), a synthetic derivative of cyclic decapeptide antamanide isolated from the highly poisonous mushroom Amanita phalloides, with sodium or potassium ions in methanol. First, from the dependence of effective electrophoretic mobility of [Gly(6) ]AA on Na(+) or K(+) ions concentration in the background electrolyte (BGE) (methanolic solution of 20 mM chloroacetic acid, 10 mM Tris, pHMeOH 7...
January 20, 2017: Electrophoresis
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