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CO Poisoning

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https://www.readbyqxmd.com/read/28643616/advanced-neuroimaging-of-carbon-monoxide-poisoning
#1
Marco Varrassi, Alessandra Di Sibio, Camilla Gianneramo, Marco Perri, Giorgia Saltelli, Alessandra Splendiani, Carlo Masciocchi
Carbon monoxide (CO) inhalation is nowadays the most common cause of fatal poisoning worldwide. CO binds to haemoglobin 230-270 times more avidly than oxygen, thus leading to formation of carboxyhaemoglobin with subsequent reduction of tissue oxygenation. Brain is mainly affected due to its high oxygen requirement. Up to two-thirds of patients who survive the acute phase of this pathology present a delayed leukoencephalopathy, usually in a period ranging from two to 40 days. White matter damage closely relates to long-term prognosis of these patients...
January 1, 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28641276/atherosclerosis-and-the-hydrogen-sulfide-signaling-pathway-therapeutic-approaches-to-disease-prevention
#2
Zhi-Jun Wang, Jian Wu, Wei Guo, Yi-Zhun Zhu
Hydrogen sulfide (H2S) is now admitted as a third gasotransmitter together with nitric oxide (NO) and carbon monoxide (CO), albeit it was originally considered as a foul and poisonous gas. Endogenous H2S production in mammalian cells is counting on the three enzymes acting on cysteine. Involvement of H2S in various physiological and pathological processes has been extensively studied in the last fifteen years. Mounting evidence suggests that H2S is able to protect against atherosclerosis development and progression...
June 23, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28627763/suspected-methadone-toxicity-from-hospital-to-autopsy-bed
#3
Jaber Gharehdaghi, Asieh Takalloo-Bakhtiari, Hossein Hassanian-Moghaddam, Nasim Zamani, Mohammad-Javad Hedayatshode
High mortality rates have been reported for methadone in both adults and children. We aimed to determine the pattern of toxicity, possible underlying diseases and treatment challenges in patients referred to our center with early diagnosis of methadone toxicity and who later died. Medical files of all methadone-poisoned patients who had been admitted to a referral center of toxicology between March 2011 and March 2016, died during the hospital stay and sent for autopsy to Legal Medicine Organization were retrospectively evaluated...
June 19, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28617174/selective-catalytic-reduction-of-nitric-oxide-with-carbon-monoxide-over-alumina-pellet-supported-catalysts-in-the-presence-of-excess-oxygen
#4
Kaijie Liu, Qingbo Yu, Qin Qin, Chunpeng Wang
Selective catalytic reduction of nitrogen oxides with carbon monoxide (CO-SCR) is a promising technology to remove NOX and CO simultaneously from flue gas. The thermodynamic analyses of catalytic process were performed toward four kinds of active metal oxides (CuxOy, CoxOy, MnxOy and CexOy). According to the standard Gibbs free energy changes calculated, Mn had better resistance to oxygen than Cu, Co and Ce, while Cu and Ce had better resistance to water vapor poisoning as active metal. Then, a series of binary and ternary preformed catalysts with different metal ratios were prepared by impregnation method using Al2O3 pellets as support and tested in excess oxygen (16vol...
June 15, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28608865/cardiological-aspects-of-carbon-monoxide-poisoning
#5
Jakub Marchewka, Iwona Gawlik, Grzegorz Dębski, Lech Popiołek, Wojciech Marchewka, Piotr Hydzik
AIM: The aim of this study was to assess cardiological manifestations of carbon monoxide (CO) poisoning. Background/introduction: Carbon monoxide intoxication is one of the most important toxicological causes of morbidity and mortality worldwide. Early clinical manifestation of CO poisoning is cardiotoxicity. MATERIALS AND METHODS: We enrolled 75 patients (34 males and 41 females, mean age 37.6 ± 17.7 y/o) hospitalized due to CO poisoning. Laboratory tests including troponin I, blood pressure measurements, HR and electrocardiograms (ECG) were collected...
2017: Folia Medica Cracoviensia
https://www.readbyqxmd.com/read/28598418/taming-interfacial-electronic-properties-of-platinum-nanoparticles-on-vacancy-abundant-boron-nitride-nanosheets-for-enhanced-catalysis
#6
Wenshuai Zhu, Zili Wu, Guo Shiou Foo, Xiang Gao, Mingxia Zhou, Bin Liu, Gabriel M Veith, Peiwen Wu, Katie L Browning, Ho Nyung Lee, Huaming Li, Sheng Dai, Huiyuan Zhu
Taming interfacial electronic effects on Pt nanoparticles modulated by their concomitants has emerged as an intriguing approach to optimize Pt catalytic performance. Here, we report Pt nanoparticles assembled on vacancy-abundant hexagonal boron nitride nanosheets and their use as a model catalyst to embrace an interfacial electronic effect on Pt induced by the nanosheets with N-vacancies and B-vacancies for superior CO oxidation catalysis. Experimental results indicate that strong interaction exists between Pt and the vacancies...
June 9, 2017: Nature Communications
https://www.readbyqxmd.com/read/28577401/enhanced-protection-of-pdms-embedded-palladium-catalysts-by-co-embedding-of-sulphide-scavengers
#7
Daniele Comandella, Min Hyung Ahn, Hojeong Kim, Katrin Mackenzie
For Pd-containing hydrodechlorination catalysts, coating with poly(dimethyl siloxane) (PDMS) was proposed earlier as promising protection scheme against poisoning. The PDMS coating can effectively repel non-permeating poisons (such as SO3(2-)) retaining the hydrodechlorination Pd activity. In the present study, the previously achieved protection efficiency was enhanced by incorporation of sulphide scavengers into the polymer. The embedded scavengers were able to bind permeating non-ionic poisons (such as H2S) during their passage through PDMS prior to Pd contact which ensured an extended catalyst lifetime...
May 31, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28577234/antagonistic-effect-of-laver-pyropia-yezonensis-and-p-haitanensis-on-subchronic-lead-poisoning-in-rats
#8
Yingying Guo, Xiaohui Gu, Yanhua Jiang, Wenjia Zhu, Lin Yao, Zhantao Liu, Hua Gao, Lianzhu Wang
Lead, one of the most harmful heavy metals, can cause various hazardous effects on living organisms. This study was undertaken to evaluate the antagonistic and protective effects of two economically important laver species, Pyropia yezoensis and P. haitanensis, against subchronic lead poisoning in rats by a 30-day feeding test. Sixty-four healthy Wistar rats were randomly divided into eight groups with eight rats (4♂ + 4♀) per group, among which, one group was served as the control, the others were respectively treated with lead acetate (5 mg/kg b w), and a combination of lead acetate and P...
June 3, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28566118/nbome-hallucinogenic-drug-exposures-reported-to-the-danish-poison-information-centre
#9
Gorm Roager Madsen, Tonny Studsgaard Petersen, Kim Peder Dalhoff
INTRODUCTION: N-benzylmethoxy (NBOMe) is a new class of hallucinogenic designer drugs sold on cheap blotter papers. They are potent 5-hydroxytryptamine-2A-receptor agonists, and since their recent entry into the drug market there have been worldwide reports of severe intoxications and even fatalities. This study reviews suspected NBOMe drug exposures reported to the Danish Poison Information Centre (DPIC). METHODS: Data from the DPIC database were extracted, including all enquiries with NBOMe exposures reported from 1 January 2013 to 30 June 2016...
June 2017: Danish Medical Journal
https://www.readbyqxmd.com/read/28539714/evaluation-of-herb-drug-interactions-of-hovenia-dulcis-fruit-extracts
#10
Jong Suk Park, Shaheed Ur Rehman, In Sook Kim, Min Sun Choi, Chun-Soo Na, Hye Hyun Yoo
BACKGROUND: Hovenia dulcis (Rhamnaceae) fruits are popularly used as herbal medicines or dietary supplements in Asian countries due to functions such as liver protection and detoxification from alcohol poisoning. Accordingly, it is very likely for dietary supplemental products, including H. dulcis fruit extracts, to be taken with prescription drugs. OBJECTIVE: In this study, possible food-drug interactions involving H. dulcis fruit extracts were evaluated based on the inhibition of cytochrome P450 (CYP) enzyme activity...
April 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28530403/propitious-dendritic-cu2o-pt-nanostructured-anodes-for-direct-formic-acid-fuel-cells
#11
Gumaa A El-Nagar, Ahmad M Mohammad, Mohamed S El-Deab, Bahgat E El-Anadouli
This study introduces a novel competent dendritic copper oxide-platinum nanocatalyst (nano-Cu2O-Pt) immobilized onto a glassy carbon (GC) substrate for formic acid (FA) electro-oxidation (FAO); the prime reaction in the anodic compartment of direct formic acid fuel cells (DFAFCs). Interestingly, the proposed catalyst exhibited an outstanding improvement for FAO compared to the traditional platinum nanoparticles (nano-Pt) modified GC (nano-Pt/GC) catalyst. This was evaluated from steering the reaction mechanism toward the desired direct route producing carbon dioxide (CO2); consistently with mitigating the other undesired indirect pathway producing carbon monoxide (CO); the potential poison deteriorating the catalytic activity of typical Pt-based catalysts...
May 31, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28526119/effects-of-temperature-salinity-and-composition-of-the-dinoflagellate-assemblage-on-the-growth-of-gambierdiscus-carpenteri-isolated-from-the-great-barrier-reef
#12
Leanne Sparrow, Paolo Momigliano, Garry R Russ, Kirsten Heimann
Increases in reported incidence of ciguatera fish poisoning (hereafter ciguatera) have been linked to warmer sea temperatures that are known to trigger coral bleaching events. The drivers that trigger blooms of ciguatera-causing dinoflagellates on the Great Barrier Reef (GBR) are poorly understood. This study investigated the effects of increased temperatures and lowered salinities, often associated with environmental disturbance events, on the population growth of two strains of the potentially ciguatera-causing dinoflagellate, Gambierdiscus carpenteri (NQAIF116 and NQAIF380)...
May 2017: Harmful Algae
https://www.readbyqxmd.com/read/28510803/occupational-and-life-style-factors-acquired-mutagenicity-in-agric-workers-of-northeastern-brazil
#13
Tatiana Vieira Souza Chaves, Muhammad Torequl Islam, Manoel Odoríco de Moraes, Marcus Vinícius Oliveira Barros de Alencar, Débora Cássia Vieira Gomes, Rodrigo Mendes de Carvalho, Sharbel Weider Maluf, Fabrício Pires de Moura do Amaral, Márcia Fernanda Correia Jardim Paz, Gilberto Santos Cerqueira, Hercília Maria Lins Rolim, João Marcelo de Castro E Sousa, Ana Amélia de Carvalho Melo-Cavalcante, Maria Elisabete Amaral de Moraes
Pesticides are a complex mixture of chemicals used to protect crops from a number of pests and diseases. They have been considered as potential mutagenic agents. This study aims at evaluation of the mutagenic effect of pesticide exposure to agricultural workers through chromosomal aberrations (CA) and micronucleus (MN) assay in peripheral blood lymphocytes and oral mucosal cells, respectively. The exposed group was consisted with 97 farmers, while the control (un-exposed) group consisted of 55. The results showed a significant (p < 0...
May 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28499205/comparative-metabolomics-analysis-for-the-compatibility-and-incompatibility-of-kansui-and-licorice-with-different-ratios-by-uhplc-qtof-ms-and-multivariate-data-analysis
#14
Juan Shen, Zong-Jin Pu, Jun Kai, An Kang, Yu-Ping Tang, Li-Li Shang, Gui-Sheng Zhou, Zhen-Hua Zhu, Er-Xin Shang, Shao-Ping Li, Yu-Jie Cao, Wei-Wei Tao, Shu-Lan Su, Li Zhang, Huiping Zhou, Da-Wei Qian, Jin-Ao Duan
Kansui, the root of Euphorbia kansui T.N. Liou ex T.P. Wang (Euphorbiaceae), is a well-known poisonous traditional Chinese medicine (TCM). However, many monographs of TCM indicated that it cannot be co-used with licorice, as kansui-licorice is a typical "eighteen incompatible" medicaments. Our previous studies have indicated that kansui was effective in treating malignant pleural effusion (MPE), and the efficacy could be weakened by the co-use of licorice, even causing serious toxicity at the given ratio. Nevertheless, the actual mechanisms of their dosage-toxicity-efficacy relationship need to be well clarified...
July 1, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28489460/a-preliminary-study-in-the-alterations-of-mitochondrial-respiration-in-patients-with-carbon-monoxide-poisoning-measured-in-blood-cells
#15
David H Jang, Matthew Kelly, Kevin Hardy, David S Lambert, Frances S Shofer, David M Eckmann
OBJECTIVES: Carbon monoxide (CO) is a colorless and odorless gas responsible for poisoning mortality and morbidity in the United States. At this time, there is no reliable method to predict the severity of poisoning or clinical prognosis following CO exposure. Whole blood cells, such as peripheral blood mononuclear cells (PBMCs) and platelets, have been explored for their potential use to act as sensitive biomarkers for mitochondrial dysfunction which may have a role in CO poisoning. DESIGN: The objective of this study was to measure mitochondrial respiration using intact cells obtained from patients exposed to CO as a potential biomarker for mitochondrial inhibition with results that can be obtained in a time frame useful for guiding clinical care...
July 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28457131/fast-prediction-of-co-binding-energy-via-the-local-structure-effect-on-ptcu-alloy-surfaces
#16
Zhi-Jian Zhao, Rentao Mu, Xiaohui Wang, Jinlong Gong
CO poisoning is a major problem for Pt-based catalysts in various catalytic processes. Thus, the prediction of CO binding energies over Pt alloy surfaces is fundamentally important to evaluate their CO poisoning tolerance. This article describes the effect of surface and subsurface coordination environments on the CO binding strength over PtCu alloy surfaces by employing density functional theory calculations. We show that the existence of surface Pt neighbors weakens the CO binding strength on Pt, whereas the subsurface Pt neighbors play the opposite role...
May 8, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28452410/hollow-carbon-nanopolyhedra-for-enhanced-electrocatalysis-via-confined-hierarchical-porosity
#17
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
#18
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/28445026/chromium-poisoning-effects-on-surface-exchange-kinetics-of-la0-6sr0-4co0-2fe0-8o3-%C3%AE
#19
Yi-Lin Huang, A Mohammed Hussain, Christopher Pellegrinelli, Chunyan Xiong, Eric D Wachsman
The presence of Cr has already been reported in literature to cause severe degradation to La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF). However, fundamental understanding of Cr effects on the surface exchange kinetics is still lacking. For the first time, in situ gas phase isotopic oxygen exchange was utilized to quantitatively determine Cr effect on oxygen exchange kinetics of LSCF powder as a function of temperature and water vapor. Our investigations revealed that the formation of secondary phases such as SrCrO4, Cr2O3, Cr-Co-Fe-O, and La-Co-Fe-O can affect both the oxygen dissociation step and overall surface exchange...
May 2, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28441428/increased-long-term-risk-of-major-adverse-cardiovascular-events-in-patients-with-carbon-monoxide-poisoning-a-population-based-study-in-taiwan
#20
Chung-Shun Wong, Ying-Chin Lin, Li-Chin Sung, Tzu-Ting Chen, Hon-Ping Ma, Yung-Ho Hsu, Shin-Han Tsai, Yuh-Feng Lin, Mei-Yi Wu
BACKGROUND: Carbon monoxide (CO) poisoning may cause toxicity to the cardiovascular system. However, the association between CO poisoning and the risk of major adverse cardiovascular events (MACE) remains unestablished. We investigated the incidence of MACE after CO poisoning in Taiwan and evaluated whether CO-poisoned individuals had a higher risk of MACE than did the general population. METHODS: Using Taiwan's National Health Insurance Research Database (NHIRD) during 2005-2013, a nationwide population-based cohort study was conducted among patients who experienced CO poisoning between 2005 and 2013...
2017: PloS One
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