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hydrochloric acid poisoning

Keika Adachi, Kaori Ohtani, Michio Kawano, Ravindra Pal Singh, Basit Yousuf, Kenji Sonomoto, Tohru Shimizu, Jiro Nakayama
Clostridium perfringens produces various exotoxins and enzymes that cause food poisoning and gas gangrene. The genes involved in virulence are regulated by the agr-like quorum sensing (QS) system, which consists of a QS signal synthesis system and a VirSR two-component regulatory system (VirSR TCS) which is a global regulatory system composed of signal sensor kinase (VirS) and response regulator (VirR). We found that the perfringolysin O gene (pfoA) was transiently expressed during mid-log phase of bacterial growth; its expression was rapidly shut down thereafter, suggesting the existence of a self-quorum quenching (sQQ) system...
January 17, 2018: Journal of Bioscience and Bioengineering
Valérie Baillif-Couniou, Christophe Bartoli, Caroline Sastre, Marjorie Chèze, Marc Deveaux, Georges Léonetti, Anne-Laure Pélissier-Alicot
Attempted murder by repeated poisoning is quite rare. The authors describe the case of a 62-year-old man who was admitted to an intensive care unit (ICU) for neurological disturbances complicated by inhalation pneumopathy. He presented a loss of consciousness while his wife was visiting him at the ICU (H0). Forty-eight hours later (H48), police officers apprehended the patient's wife pouring a liquid into his fruit salad at the hospital. Toxicological analyses of a blood sample and the infusion equipment (H0), as well as the fruit salad and its container (H48), confirmed the attempted poisoning with cyamemazine (H0) and hydrochloric acid (H48)...
February 2018: Journal of Forensic and Legal Medicine
Blazena Caganova, Tatiana Foltanova, Erik Puchon, Elena Ondriasova, Silvia Plackova, Tomas Fazekas, Magdalena Kuzelova
Caustic poisonings are still associated with many fatalities. Studies focusing on the elderly are rare. The purpose of the present study was to compare the clinical outcomes of caustic ingestion injury in elderly and non-elderly adults with regard to gender, intent of exposure, substance ingested, severity of mucosal injury, complications, and mortality. Caustic substance exposures reported to the National Toxicological Information Centre in Slovakia during 1998-2015 were reviewed retrospectively. The patients were divided into two groups: the non-elderly (<60 years) and elderly adults (≥60 years)...
October 14, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Jingkun Li, Qingying Jia, Shraboni Ghoshal, Wentao Liang, Sanjeev Mukerjee
Anion immunity toward the oxygen reduction reaction (ORR) has tremendous implications in electrocatalysis with applications for fuel cells, metal-air batteries, and oxygen depolarized cathodes (ODCs) in the anodic evolution of chlorine. The necessity of exploring ORR catalysts with immunity to anion adsorption is particularly significant considering that platinum group metal (PGM) catalysts are costly and highly vulnerable to impurities such as halides. Herein, we report a metal organic framework (MOF)-derived Fe-N-C catalyst that exhibits a dramatically improved half-wave potential of 240 mV compared to the state-of-the-art RhxSy/C catalyst in a rotating disk electrode in the presence of Cl(-)...
May 2, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
Hui Yan, Ping Xiang, Sujing Zhang, Baohua Shen, Min Shen
Aluminum phosphide (AlP) is an effective and cheap pesticide that is commonly used worldwide, but it is also a common cause of human poisoning and carries a high mortality rate. AlP reacts with moisture in air, water, and hydrochloric acid in the stomach to produce phosphine (PH3 ) gas. Two routes of exposure are ingestion of AlP and inhalation of phosphine generated by the action of moisture on AlP. Absorbed phosphine is rapidly metabolized into phosphite and hypophosphite. A method is described for the analysis of the phosphine metabolites in various biological matrices...
July 2017: International Journal of Legal Medicine
D D Yang, J N Xu, B L Zhu
Objective: To investigate and analyze the influential factors of occupational hazard acci-dents, emergency facilities and emergency management in Silicon solar cell producing enterprises, then to pro-vide scientific strategies. Methods: The methods of occupationally healthy field investigating, inspecting of ven-tilation effectiveness, setup of emergency program and wearing chemical suit were used. Results: The mainly occupational hazard accidents factors in the process of Silicon solar cell producing included poisoning chemi-cals, high temperature, onizing radiation and some workplaces...
November 20, 2016: Chinese Journal of Industrial Hygiene and Occupational Diseases
A Smędra-Kaźmirska, M Kędzierski, M Barzdo, Ap Jurczyk, S Szram, J Berent
The paper describes a fatal case of accidental ingestion of a mixture of hydrochloric acid and hydrofluoric acid. The man was admitted to hospital, where appropriate treatment, adequate to his condition, was instituted. Numerous ventricular fibrillation episodes, for which the patient was defibrillated repeatedly, were observed during the period of hospitalization. The patient was in a critical condition, with progressive symptoms of hypovolemic shock and multiorgan failure. On the next day after admission, signs of electromechanical dissociation progressing to asystole were noted...
January 2014: Archiwum Medycyny Sa̧dowej i Kryminologii
D A S Sakunthala Tennakoon, K A P Bandumala Perera, L S Hathurusinghe
MCPA (4-chloro-2-methyl phenoxyacetic acid) is a systemic hormone-type selective herbicide readily absorbed by leaves and roots. Use of MCPA for murder or attempted murder is very rare in Sri Lanka. However, a reported case of attempted murder by adding MCPA to water will be discussed in this paper. Three extraction methods were carried out with urine samples spiked with MCPA, namely liquid-liquid extraction with chloroform, solid phase extraction using C18 cartridges and vortex mixing with methanolic hydrochloric acid...
October 2014: Forensic Science International
Siguan Liu, Wenwei Cheng
No abstract text is available yet for this article.
March 2014: Chinese Journal of Industrial Hygiene and Occupational Diseases
Qihua Zhang, Guipeng Yang
The highly toxic methyl-, ethyl- and phenylmercury species that may exist in the three main anatomical parts - the adductor muscle, the mantle and the visceral mass - of bay scallops (Argopecten irradias) were quantitatively released by cupric chloride, zinc acetate, sodium chloride and hydrochloric acid (HCl) under ultrasonic extraction. After centrifugation, the mercury species in the supernatant were concentrated by thio (SH)-bearing chelating resins, eluted with HClO4 and HCl and extracted with toluene...
2014: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
Pengying Wang, Sheng Su, Jun Xiang, Huawei You, Fan Cao, Lushi Sun, Song Hu, Yun Zhang
MnOx-CeO2/γ-Al2O3 (MnCe) selective catalytic reduction (SCR) catalysts prepared by sol-gel method were employed for low-temperature Hg(0) oxidation on a fixed-bed experimental setup. BET, XRD and XPS were used to characterize the catalysts. MnCe catalysts exhibited high Hg(0) oxidation activity at low temperatures (100-250 °C) under the simulated flue gas (O2, CO2, NO, SO2, HCl, H2O and balanced with N2). Only a small decrease in mercury oxidation was observed in the presence of 1200 ppm SO2, which proved that the addition of Ce helped resist SO2 poisoning...
April 2014: Chemosphere
Tidiane Diallo, Hinde Hami, Ababacar Maiga, Boubou Coulibaly, Diadié Maiga, Abdelrhani Mokhtari, Rachida Soulaymani, Abdelmajid Soulaymani
INTRODUCTION: Voluntary intoxication is a major medical and social problem in developing countries and the most common method of suicide attempt. The purpose of this paper is to describe the main characteristics of voluntary intoxication in Mali and the risk factors associated with the outcome of poisoning. More generally, the aim is to contribute to the reduction of morbidity and mortality associated with self-poisoning. METHODS: We conducted a retrospective descriptive study of the cases of deliberate self-poisoning recorded between 2000 and 2010 in 15 Malian hospitals...
May 2013: Santé Publique: Revue Multidisciplinaire Pour la Recherche et L'action
Siham Mahir, Abdelmajid Soulaymani, Hind Hami, Abdelrhani Mokhtari, Doha Benali, Lahcen Ouammi, Maria Windy, Rachida Soulaymani Benchekh
INTRODUCTION: Deliberate self-poisoning is a serious problem in Morocco, including in the Souss-Massa-Drâa region. However, our understanding of the problem of suicidal poisoning remains limited. SUBJECT: This paper aims to describe the characteristics of patients, toxic substances and poisoning and to identify the risk factors influencing patient outcomes. METHODS: A retrospective study was conducted of all cases of deliberate self-poisoning recorded between 1981 and 2007 by the Centre Anti-Poison et de Pharmacovigilance du Maroc...
May 2013: Santé Publique: Revue Multidisciplinaire Pour la Recherche et L'action
Andon Chibishev, Zenina Pareska, Vesna Chibisheva, Natasa Simonovska
BACKGROUND: the ingestion of chemical agents, of caustic nature, represents a serious problem for clinical toxicology. If the ingestion doesn't cause death during the acute period, it will most often cause severe side effects in the upper gastrointestinal tract during the chronic phase. AIMS: The purpose of this study is to show the clinical, epidemiological and socio-economical characteristics seen in acute corrosive poisonings such as ingested caustic agents, causes for abuse and most consequential complications...
2012: Medical Archives
Ya-li Lü, Chuan-jun Chen, Bi-xia Liang
OBJECTIVE: To explore the changes of peripheral blood lymphocyte subsets in patients with acute hydrogen chloride gas poisoning. METHODS: When the patients were admitted or on the secondary day, the percentages of total T-cell lymphocyte subsets (CD(3)(+)CD(19)(-)), CD(4)(+)T cells (CD(3)(+)CD(4)(+)), CD(8)(+)T cells (CD(3)(+)CD(8)(+)), B cells (CD(3)(-)CD(19)(+)) and NK cells (CD(3)(-)CD(16)(+)CD(56)(+)), and the ration of CD(4)(+)/CD(8)(+) in 37 cases with acute hydrogen chloride gas poisoning and 49 healthy controls were detected with flow cytometer...
May 2012: Chinese Journal of Industrial Hygiene and Occupational Diseases
B Ben-Gigirey, M L Rodríguez-Velasco, A Otero, J M Vieites, A G Cabado
Commission Regulation (EC) N° 2074/2005 recognises the biological method as the reference method for Paralytic Shellfish Poisoning (PSP) toxins detection in molluscs. It was amended by Commission Regulation (EC) N° 1664/2006 that accepted the so-called Lawrence method as an alternative to the reference method. The goal of this study was to compare AOAC Official Methods of Analysis 959.08 (Biological method) and 2005.06 (Prechromatographic Oxidation and Liquid Chromatography with fluorescence detection) in samples with different toxin profiles...
October 2012: Toxicon: Official Journal of the International Society on Toxinology
Andrew D Turner, Monika Dhanji-Rapkova, Myriam Algoet, Benjamin A Suarez-Isla, Marco Cordova, Catherine Caceres, Cory J Murphy, Melanie Casey, David N Lees
Significant differences previously observed in the determination of paralytic shellfish poisoning toxins (PSTs) in oysters using official method AOAC 2005.06 and 959.08 were investigated in detail with regard to possible matrix effects. Method AOAC 2005.06 gave results 2-3 times higher than the mouse bioassay method, 959.08, differences thought to be due to underestimation of PSTs by the mouse bioassay. In order to prove the cause of these large differences, work was conducted here to examine the presence and effects of matrix components on the performance of each of the two assays...
February 2012: Toxicon: Official Journal of the International Society on Toxinology
Mohan Gurjar, Arvind K Baronia, Afzal Azim, Kalpana Sharma
Aluminum phosphide (AlP) is a cheap, effective and commonly used pesticide. However, unfortunately, it is now one of the most common causes of poisoning among agricultural pesticides. It liberates lethal phosphine gas when it comes in contact either with atmospheric moisture or with hydrochloric acid in the stomach. The mechanism of toxicity includes cellular hypoxia due to the effect on mitochondria, inhibition of cytochrome C oxidase and formation of highly reactive hydroxyl radicals. The signs and symptoms are nonspecific and instantaneous...
July 2011: Journal of Emergencies, Trauma, and Shock
M A Arıcı, D Ozdemir, N C Oray, M Buyukdeligoz, Y Tuncok, S Kalkan
OBJECTIVE: The aim of this study was to analyse the caustic and household detergent exposure cases were admitted to the Department of Emergency Medicine at Dokuz Eylul University Hospital (EMDEU) between 1993 and 2008. METHODS: Age, sex, reason of exposure, clinical signs, rate of endoscopy in oral exposures, treatment attempts, length of hospital stay and outcome were evaluated. A chi-square test was used to analyse statistical differences. RESULTS: Caustic exposures accounted for 8...
June 2012: Human & Experimental Toxicology
Jing-jing Han, Fang Xu, Qun Sun, Jing Bian, Ling-hui Li
In the present paper, a model based on the arsenic absorption of the unicellular microorganism tetrahymena pyriformis from the incubation aqueous solution of feed additive arsanilic acid and its degradation products As(III) and As(V) was established for the investigation of the environmental impacts of feed additive arsanilic acid on the living organisms. The tetrahymena pyriformis was incubated in the incubation aqueous solution and its degradation products for 72 h, after cleaning to remove the incubation aqueous solution, the cell was broken up and separated...
September 2010: Guang Pu Xue Yu Guang Pu Fen Xi, Guang Pu
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