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https://www.readbyqxmd.com/read/28220908/hsp70-hspa1-polymorphisms-in-former-workers-with-chronic-mercury-vapor-exposure
#1
Yury I Chernyak, Alla P Merinova
OBJECTIVES: To investigate 4 loci of 3 HSP70 genes in caustic soda production plant former workers, who have been exposed to metallic mercury vapors for a long time, and including numerous cases of chronic mercury intoxication (CMI). MATERIAL AND METHODS: Polymorphisms in HSP70 gene family members (HSP1A1 (+190G/C, rs1043618), HSPA1B (+1267A/G and +2074G/C, rs1061581) and HSP1AL (+2437T/C, rs2227956)) genes were studied among 120 male workers involved in caustic soda production by mercury electrolysis at 2 plants in Eastern Siberia...
February 21, 2017: International Journal of Occupational Medicine and Environmental Health
https://www.readbyqxmd.com/read/28216076/total-esophageal-substitution-for-combined-hypopharyngeal-and-esophageal-strictures-after-corrosive-injury-in-children
#2
Ana Cristina Aoun Tannuri, Uenis Tannuri
BACKGROUND/PURPOSE: The treatment of children with esophageal strictures and involvement of the hypopharynx caused by caustic substance ingestion continues to be challenging. The aims of the present study are to describe the peculiarities of the technique of complete esophageal substitution for the treatment of children with severe caustic strictures (pharyngocoloplasties) and to compare the results to those of classical esophagocoloplasty with thoracic and abdominal esophageal substitution in another group of children...
February 12, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28205389/growth-inhibition-of-formed-corneal-neovascularization-following-fosaprepitant-treatment
#3
Fabio Bignami, Anna Lorusso, Paolo Rama, Giulio Ferrari
PURPOSE: The aim of this study was to test the efficacy of Neurokinin-1 Receptor (NK-1R) antagonist -Fosaprepitant- in inducing regression of established corneal neovascularization (CNV). METHODS: Twenty C57BL/6 mice underwent alkali burn. Seven days later, when corneal neovessels had developed, they received Fosaprepitant 10 mg/ml, administered topically six times a day in the right eye for 10 days. In parallel, a group of 20 causticated mice was treated with normal saline, as control...
February 15, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28203276/a-biorefinery-scheme-to-fractionate-bamboo-into-high-grade-dissolving-pulp-and-ethanol
#4
Zhaoyang Yuan, Yangbing Wen, Nuwan Sella Kapu, Rodger Beatson, D Mark Martinez
BACKGROUND: Bamboo is a highly abundant source of biomass which is underutilized despite having a chemical composition and fiber structure similar as wood. The main challenge for the industrial processing of bamboo is the high level of silica, which forms water-insoluble precipitates negetively affecting the process systems. A cost-competitive and eco-friendly scheme for the production of high-purity dissolving grade pulp from bamboo not only requires a process for silica removal, but also needs to fully utilize all of the materials dissolved in the process which includes lignin, and cellulosic and hemicellulosic sugars as well as the silica...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28192917/simple-reagentless-quantification-of-total-bilirubin-in-blood-via-microfluidic-phototreatment-and-image-analysis
#5
Brandon L Thompson, Sarah L Wyckoff, Doris M Haverstick, James P Landers
Total bilirubin (T-Bil) is an important clinical diagnostic marker that is measured frequently by physicians to assist in the diagnosis, treatment, and monitoring of multiple medical conditions. The work demonstrated here utilizes the 48-year-old mechanism of phototherapy that is commonly implemented in the treatment of infants with exaggerated physiologic and pathologic jaundice but adapts it to the microfluidic level for the ultimate purpose of total bilirubin quantitation. After acquisition of a small volume of blood (<10 μL) and through subsequent separation (plasma + red blood cells), a 3 μL plasma sample was imaged by a portable scanner and analyzed through a custom algorithm for color intensity...
February 13, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28191325/management-of-esophageal-burns-caused-by-caustic-ingestion-a-case-report
#6
Bita Shahbazzadegan, Mehdi Samadzadeh, Iraj Feizi, Yousef Shafaiee
INTRODUCTION: Domestic and industrial swallowing of caustic substances can cause acute and chronic injuries. In the acute phase of care, focus is on the immediate control of tissue damage and perforation, and in the chronic phase, the focus is on the treatment of pharyngeal narrowing and impaired swallowing. CASE PRESENTATION: The patients of this report were an 18-year-old man and a 20-year-old woman, who had esophageal burns after ingesting chemicals, and for solving their nutritional problems, such as difficulty in swallowing, they had underwent surgery...
November 2016: Iranian Red Crescent Medical Journal
https://www.readbyqxmd.com/read/28144066/erosion-of-esophageal-stent-into-left-main-bronchus-causing-airway-compromise
#7
S Aneeshkumar, L Sundararajan, Rajan Santosham, Rajkumar Palaniappan, Ubal Dhus
Covered or uncovered self-expanding metal stents are currently used for the palliative treatment of neoplastic esophageal strictures or compressions and esophageal leaks or fistulas due to malignancies. Erosion of esophageal stents into the respiratory tract is a rare complication and that too has been reported mostly as an early complication within few days or weeks. Here, we present the case of a 31-year-old female, who presented with a late complication of an esophageal stent eroding into the left main bronchus causing respiratory distress...
January 2017: Lung India: Official Organ of Indian Chest Society
https://www.readbyqxmd.com/read/28113344/phenomenological-transparency
#8
Morgan McGuire, Michael Mara
Translucent objects such as fog, clouds, smoke, glass, ice, and liquids are pervasive in cinematic environments because they frame scenes in depth and create visually-compelling shots. Unfortunately, they are hard to render in real-time and have thus previously been rendered poorly compared to opaque surfaces. This paper introduces the first model for a real-time rasterization algorithm that can simultaneously approximate the following transparency phenomena: wavelength-varying ("colored") transmission, translucent colored shadows, caustics, volumetric light and shadowing, partial coverage, diffusion, and refraction...
January 20, 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/28088143/fokker-planck-quantum-master-equation-for-mixed-quantum-semiclassical-dynamics
#9
Jin-Jin Ding, Yao Wang, Hou-Dao Zhang, Rui-Xue Xu, Xiao Zheng, YiJing Yan
We revisit Caldeira-Leggett's quantum master equation representing mixed quantum-classical theory, but with limited applications. Proposed is a Fokker-Planck quantum master equation theory, with a generic bi-exponential correlation function description on semiclassical Brownian oscillators' environments. The new theory has caustic terms that bridge between the quantum description on primary systems and the semiclassical or quasi-classical description on environments. Various parametrization schemes, both analytical and numerical, for the generic bi-exponential environment bath correlation functions are proposed and scrutinized...
January 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28074704/the-toxicology-of-zinc-chloride-smoke-producing-bombs-and-screens
#10
Ayman El Idrissi, Lisanne van Berkel, Nadia E Bonekamp, Diana J Z Dalemans, Marcel A G van der Heyden
CONTEXT: Zinc chloride (ZnCl2)-based smoke bombs and screens are in use since the Second World War (1939-1945). Many case descriptions on ZnCl2 smoke inhalation incidents appeared since 1945. OBJECTIVE: We provide a comprehensive overview of the clinical symptoms and underlying pathophysiology due to exposure to fumes from ZnCl2 smoke producing bombs. In addition, we give a historical overview of treatment regimens and their outcomes. METHODOLOGY: We performed a literature search on Medline, Scopus and Google Scholar databases using combinations of the following search terms "smoke bomb", "smoke screen", "ZnCl2", "intoxication", "poisoning", "case report", "HE smoke", "hexachloroethane smoke", "smoke inhalation" and "white smoke"...
March 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28066602/a-novel-surgical-method-for-acquired-non-malignant-complicated-tracheoesophageal-and-bronchial-gastric-stump-fistula-the-double-patch-technique
#11
Guang Yang, Wei-Miao Li, Jin-Bo Zhao, Jian Wang, Yun-Feng Ni, Yong-An Zhou, Yong Han, Xiao-Fei Li, Xiao-Long Yan
BACKGROUND: To manage the acquired benign complicated tracheoesophageal fistula (TEF) and bronchial-gastric stump fistula (BGSF) are clinical technical challenge. The purpose of this study is to retrospectively review a surgical "double patch" technique in treating nonmalignant complicated TEF and BGSF, and then clarify the long-term curative effect of the technique. METHODS: Clinical records of 30 patients with non-malignant complicated TEF and BGSF treated by "double patch" technique in Tangdu Hospital between August 2004 and August 2014, were analyzed and summarized retrospectively...
November 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28063680/gastric-tube-esophagoplasty-for-pediatric-esophageal-replacement
#12
Mahmoud M A Elfiky, Gamal El Tagy, Wissam Mohamed, Osama Abdel Azim, Mohamed A Elfiky
BACKGROUND: Esophageal replacement in children is indicated in cases of esophageal atresia with or without fistula, in case of long gap esophageal atresia or failed primary repair. Intractable post corrosive esophageal stricture is considered also a major indication for replacement. METHODS: This is a cohort retrospective study of esophageal replacement cases by gastric tube carried out at the pediatric surgery department at Cairo University between 2011 and 2015...
December 24, 2016: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28045663/caustic-ingestion
#13
REVIEW
Mircea Chirica, Luigi Bonavina, Michael D Kelly, Emile Sarfati, Pierre Cattan
Corrosive ingestion is a rare but potentially devastating event and, despite the availability of effective preventive public health strategies, injuries continue to occur. Most clinicians have limited personal experience and rely on guidelines; however, uncertainty persists about best clinical practice. Ingestions range from mild cases with no injury to severe cases with full thickness necrosis of the oesophagus and stomach. CT scan is superior to traditional endoscopy for stratification of patients to emergency resection or observation...
October 26, 2016: Lancet
https://www.readbyqxmd.com/read/28032947/controversies-in-the-management-of-caustic-ingestion-injury-an-evidence-based-review
#14
J H Bird, S Kumar, C Paul, J D Ramsden
BACKGROUND: Caustic ingestion of acid or alkaline substances can cause damage to the upper respiratory and upper digestive tract. Initial presentation following caustic ingestion can include oropharyngeal pain, dysphagia and stridor. It is due to this clinical presentation that the resident otolaryngologist is consulted to review and examine these patients to assess for airway compromise and commence initial management and care until airway concern has passed. OBJECTIVE OF REVIEW: This review aims to provide evidence-based guidance in the management of those presenting with acute ingestion injury so that informed initial medical therapy can be commenced and appropriate investigations are arranged to optimize patient outcome...
December 29, 2016: Clinical Otolaryngology
https://www.readbyqxmd.com/read/27997142/thiosulfate-conversion-to-sulfide-by-a-haloalkaliphilic-microbial-community-in-a-bioreactor-fed-with-h2-gas
#15
João A B Sousa, Martijn F M Bijmans, Alfons J M Stams, Caroline M Plugge
In industrial gas biodesulfurization systems, where haloalkaline conditions prevail, a thiosulfate containing bleed stream is produced. This bleed stream can be treated in a separate bioreactor by reducing thiosulfate to sulfide and recycling it. By performing treatment and recycling of the bleed stream, its disposal decreases and less caustics are required to maintain the high pH. In this study, anaerobic microbial thiosulfate conversion to sulfide in a H2/CO2 fed bioreactor operated at haloalkaline conditions was investigated...
January 6, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/27988404/bauxite-residue-neutralization-with-simultaneous-mineral-carbonation-using-atmospheric-co2
#16
Young-Soo Han, Sangwoo Ji, Pyeong-Koo Lee, Chamteut Oh
Simultaneous carbon mineralization during neutralization of bauxite residue, a caustic alkaline by-product of alumina refining, was tested using laboratory batch and a field pilot study in contact with atmospheric CO2. Since CO2 sequestration is limited by the Ca concentration in the bauxite residue, extra Ca sources were added in a semi-soluble mineral and salt form (flue gas desulfurization gypsum or CaCl2) to verify whether this Ca addition accelerated and enlarged the CO2 sequestration obtained as a consequence of neutralization...
December 12, 2016: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/27987121/further-understanding-on-the-mechanism-of-alkyl-ketene-dimer-sizing-on-the-causticized-calcium-carbonate-filled-paper-and-its-improvements
#17
Jian Wang, Miao Dang, Chao Duan, Li Qian
Causticized calcium carbonate (CCC), a solid waste derived from kraft black recovery process, can be used as an alternative for the conventional precipitated calcium carbonate (PCC). However, the application of the CCC has been limited due to its low sizing efficiency in its filled paper. In this study, the characteristics of the CCC were studied aiming to improve the alkyl ketene dimer (AKD) sizing performances of the CCC filled papers, and the results were compared with those from PCC filled papers. The results showed that the CCC had higher pore structure, higher specific surface area, and more negative charge density than the PCC, thus leading to a higher cationic AKD adsorption onto the CCC filler...
December 16, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27979610/salivary-bypass-tube-placement-in-esophageal-stricture-a-technical-note-and-report-of-three-cases
#18
Giancarlo Tirelli, Roberto Baruca, Francesca Boscolo Nata
Hypopharyngeal and cervical esophageal strictures can be caused by advanced malignancies, ingestion of caustic materials, or can follow surgery or radiation therapy. They cause marked dysphagia and consequently patients need nasogastric or gastrostomy tube feeding, with a remarkable impact on quality of life. To restore oral feeding, the stenosis can be progressively dilated by using rubber bougies of increasing diameter, and a Montgomery(®) Salivary Bypass Tube can then be inserted to maintain the obtained calibre...
December 12, 2016: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/27943305/use-of-skin-lightening-products-among-selected-urban-communities-in-accra-ghana
#19
Margaret Lartey, Francis D Krampa, Mubarak Abdul-Rahman, Naa L Quarcoo, Phaedra Yamson, Paa G Hagan, Yao Tettey, Richard Gyasi, Andrew A Adjei
BACKGROUND: The practice of skin lightening has been reported from North America, Europe, Asia, and Africa. In literature, some prevalence rates exceed 50%, and both sexes are involved. Common agents used include hydroquinone, mercury, corticosteroids, and caustic agents. The agents are easily accessible and affordable with very little regulation. Cutaneous and systemic side effects occur but do not appear to be a deterrent, as the notion of light skin as a surrogate for beauty is strong...
January 2017: International Journal of Dermatology
https://www.readbyqxmd.com/read/27938784/surveillance-of-patients-at-high-risk-of-squamous-cell-esophageal-cancer
#20
REVIEW
A Chaber-Ciopinska, D Kiprian, A Kawecki, M F Kaminski
Currently curative treatment for esophageal squamous cell cancer (ESCC) is possible only in patients with early-stage, usually asymptomatic disease. In Western countries, where the incidence of ESCC is relatively low, a screening of asymptomatic, average-risk population is untenable. In order to detect early-stage ESCC or its precursor lesions it is important to identify high-risk patients and consider endoscopic surveillance in these groups. These high-risk groups include patients after curative treatment for head and neck cancer, previous endoscopic resection of ESCC, caustic injury, and patients with tylosis or achalasia...
December 2016: Best Practice & Research. Clinical Gastroenterology
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