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https://www.readbyqxmd.com/read/28088675/involvement-of-water-channel-aquaporin-5-in-h2s-induced-pulmonary-edema
#1
Chunyang Xu, Lei Jiang, Yuxia Zou, Jingjing Xing, Hao Sun, Baoli Zhu, Hengdong Zhang, Jun Wang, Jinsong Zhang
Acute exposure to hydrogen sulfide (H2S) poses a significant threat to life, and the lung is one of the primary target organs of H2S. However, the mechanisms involved in H2S-induced acute pulmonary edema are poorly understood. This study aims to investigate the effects of H2S on the expression of water channel aquaporin 5 (AQP5) and to elucidate the signaling pathways involved in AQP5 regulation. In an in vivo study, C57BL6 mice were exposed to sub-lethal concentrations of inhaled H2S, and histological injury of the lungs and ultrastructure injury of the epithelial cells were evaluated...
December 30, 2016: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28088022/valorization-of-aluminum-scrap-via-an-acid-washing-treatment-for-reductive-removal-of-toxic-bromate-from-water
#2
Kun-Yi Andrew Lin, Jia-Yin Lin, Hsing-Lung Lien
Aluminum scrap (AS) is adopted for the first time as a readily available aluminum source to prepare zero-valent aluminum (ZVAl) for removing bromate from water via a reductive reaction. Since aluminum is easily oxidized to aluminum oxide (Al2O3) on exposure to air, an acid-washing pretreatment on AS is developed to remove the layer of Al2O3. HCl is found as the most effective acid to pretreat AS and the HCl-pretreated or acid-washed AS (AWAS) is able to remove bromate from water and convert it to bromide. Factors, such as temperature, pH, co-existing anions, and particle size, which influence the bromate removal using AWAS are also investigated...
January 6, 2017: Chemosphere
https://www.readbyqxmd.com/read/28086991/does-waterfall-aerosol-influence-mucosal-immunity-and-chronic-stress-a-randomized-controlled-clinical-trial
#3
Carina Grafetstätter, Martin Gaisberger, Johanna Prossegger, Markus Ritter, Predrag Kolarž, Christina Pichler, Josef Thalhamer, Arnulf Hartl
BACKGROUND: The specific microclimate of alpine waterfalls with high levels of ionized water aerosols has been suggested to trigger beneficial immunological and psychological effects. In the present three-armed randomized controlled clinical study, we focused on effects on (i) immunological reagibility, on (ii) physiological stress responses, and on (iii) stress-related psychological parameters. METHODS: People with moderate to high stress levels (n = 65) spent an active sojourn with daily hiking tours in the National Park Hohe Tauern (Großkirchheim, Austria)...
January 13, 2017: Journal of Physiological Anthropology
https://www.readbyqxmd.com/read/28077517/two-phase-hospital-associated-outbreak-of-mycobacterium-abscessus-investigation-and-mitigation
#4
Arthur W Baker, Sarah S Lewis, Barbara D Alexander, Luke F Chen, Richard J Wallace, Barbara A Brown-Elliott, Pamela J Isaacs, Lisa C Pickett, Chetan B Patel, Peter K Smith, John M Reynolds, Jill Engel, Cameron R Wolfe, Carmelo A Milano, Jacob N Schroder, Robert D Davis, Matthew G Hartwig, Jason E Stout, Nancy Strittholt, Eileen K Maziarz, Jennifer Horan Saullo, Kevin C Hazen, Richard J Walczak, Ravikiran Vasireddy, Sruthi Vasireddy, Celeste M McKnight, Deverick J Anderson, Daniel J Sexton
BACKGROUND: Nontuberculous mycobacteria (NTM) commonly colonize municipal water and cause healthcare-associated outbreaks. We investigated a biphasic outbreak of Mycobacterium abscessus at a tertiary care hospital. METHODS: Case patients had recent hospital exposure and laboratory-confirmed colonization or infection with M. abscessus from January 2013 through December 2015. We conducted a multidisciplinary epidemiologic, field, and laboratory investigation. RESULTS: The incidence rate of M...
January 11, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28077127/navigating-social-and-ethical-challenges-of-biobanking-for-human-microbiome-research
#5
Kim H Chuong, David M Hwang, D Elizabeth Tullis, Valerie J Waters, Yvonne C W Yau, David S Guttman, Kieran C O'Doherty
BACKGROUND: Biobanks are considered to be key infrastructures for research development and have generated a lot of debate about their ethical, legal and social implications (ELSI). While the focus has been on human genomic research, rapid advances in human microbiome research further complicate the debate. DISCUSSION: We draw on two cystic fibrosis biobanks in Toronto, Canada, to illustrate our points. The biobanks have been established to facilitate sample and data sharing for research into the link between disease progression and microbial dynamics in the lungs of pediatric and adult patients...
January 11, 2017: BMC Medical Ethics
https://www.readbyqxmd.com/read/28077049/evaluation-on-biological-compatibility-of-carboxymethyl-chitosan-as-biomaterials-for-antitumor-drug-delivery
#6
Zhiwen Jiang, Baoqin Han, Wanshun Liu, Yanfei Peng
Carboxymethyl-chitosan, a water-soluble derivative of chitosan, has emerged as a promising candidate for biomedical applications due to its excellent water solubility, biodegradation, biocompatibility, hydrating, antimicrobial, and nontoxicity. In this paper, the antitumor proliferation and metastasis was studied in vitro and in vivo to evaluate biocompatibility of carboxymethyl-chitosan as biomaterials for antitumor drug delivery. The results showed that carboxymethyl-chitosan could significantly reduce the clone formation and tumor migration of human cancer cells including kidney cancer cell line OS-RC-2, gastric cancer cell line SGC-7901, colon cancer cell line HT-29, and nonsmall cell lung cancer cell line NCI-H1650 in vitro...
January 1, 2017: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/28076507/effects-of-cococonut-water-and-simvastatin-in-the-treatment-of-sepsis-and-hemorrhagic-shock-in-rats
#7
Vanessa de Fátima Lima Paiva Medeiros, Ítalo Medeiros Azevedo, Marília Daniela Ferreira Carvalho, Eryvaldo Sócrates Tabosa Egito, Aldo Cunha Medeiros
PURPOSE: To evaluate the effects of modified coconut water as fluid of resuscitation combined with simvastatin in hemorrhagic shock and sepsis model in rats. METHODS: Four groups of Wistar rats with hemorrhagic shock and abdominal sepsis were studied (n=8/group). Rats were bled and maintained at a mean blood pressure 35mmHg for 60min. They were then resuscitated with: 1) saline 0.9%; 2) coconut water+3% NaCl; 3) coconut water+NaCl 3%+simvastatin microemulsion (10 mg/kg i...
December 2016: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/28075182/dispersing-the-mists-an-experimental-history-of-medicine-study-into-the-quality-of-volatile-inhalations
#8
Barry Murnane, Cathal T Gallagher, Noel Snell, Mark Sanders, Ramin Moshksar, Darragh Murnane
BACKGROUND: Dr. Nelson's Improved Inhaler was first marketed with an advertisement in The Lancet in 1865. Revolutionary at the time for its ease of use and patient-friendliness, the inhaler is still in use for self-treatment by many all over the world. On the occasion of its 150th anniversary, this study reports an experimental historical medicine approach to identify evidence for the quality of vapor inhalers. METHODS: Through accessing reviews of the device's use by the contemporary medical establishment, it was established that Dr...
January 11, 2017: Journal of Aerosol Medicine and Pulmonary Drug Delivery
https://www.readbyqxmd.com/read/28074802/goal-directed-therapy-improves-the-outcome-of-high-risk-cardiac-patients-undergoing-off-pump-coronary-artery-bypass
#9
Poonam Malhotra Kapoor, Rohan Magoon, Rajinder Singh Rawat, Yatin Mehta, Sameer Taneja, R Ravi, Milind P Hote
BACKGROUND: There has been a constant emphasis on developing management strategies to improve the outcome of high-risk cardiac patients undergoing surgical revascularization. The performance of coronary artery bypass surgery on an off-pump coronary artery bypass (OPCAB) avoids the risks associated with extra-corporeal circulation. The preliminary results of goal-directed therapy (GDT) for hemodynamic management of high-risk cardiac surgical patients are encouraging. The present study was conducted to study the outcome benefits with the combined use of GDT with OPCAB as compared to the conventional hemodynamic management...
January 2017: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/28070608/xuebijing-injection-treatment-inhibits-vasopermeability-and-reduces-fluid-requirements-in-a-canine-burn-model
#10
F-B Tang, Y-L Dai, S Hu, L-Q Ma, J-Y Li, H-P Zhang, W-H Zhang, Y-G Li, H-B Wang, H-Y Lin, Q Hu, L Li
OBJECTIVE: High vasopermeability and excessive inflammation following severe burns may result in tissue edema, organ dysfunction and the loss of circulatory plasma volume, which can influence the doctor to do the prognosis to the patients. The study aims to examine whether Xuebijing injection (XBJ), an extracts of a traditional Chinese medicine used to treat sepsis in clinic, can reduces fluid requirements by inhibiting vasopermeability and tissue edema in a canine model after burn injury...
January 9, 2017: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/28069511/in-vivo-characterization-of-magnesium-alloy-biodegradation-using-electrochemical-h2-monitoring-icp-ms-and-xps
#11
Daoli Zhao, Tingting Wang, Keaton Nahan, Xuefei Guo, Zhanping Zhang, Zhongyun Dong, Shuna Chen, Da-Tren Chou, Daeho Hong, Prashant N Kumta, William R Heineman
: The effect of widely different corrosion rates of Mg alloys on four parameters of interest for in vivo characterization was evaluated: (1) the effectiveness of transdermal H2 measurements with an electrochemical sensor for noninvasively monitoring biodegradation compared to the standard techniques of in vivo X-ray imaging and weight loss measurement of explanted samples, (2) the chemical compositions of the corrosion layers of the explanted samples by XPS, (3) the effect on animal organs by histology, and (4) the accumulation of corrosion by-products in multiple organs by ICP-MS...
January 6, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28066100/oropharyngeal-aspiration-of-bleomycin-an-alternative-experimental-model-of-pulmonary-fibrosis-developed-in-swiss-mice
#12
Swarna Bale, Manoj Sunkoju, Shiva Shankar Reddy, Veerabhadra Swamy, Chandraiah Godugu
OBJECTIVE: Pulmonary fibrosis (PF) is a progressive and predominantly lethal form of several interstitial lung diseases with limited current therapeutics; it is, therefore, essential to develop a simple, homogeneous, and noninvasive disease model to investigate possible anti-fibrotic approaches. The present study is designed to develop oropharyngeal aspiration (OPA) model of bleomycin (BLM)-induced PF as a simple and alternative to intratracheal (IT) administration of BLM in Swiss mice strain...
November 2016: Indian Journal of Pharmacology
https://www.readbyqxmd.com/read/28059848/hemodynamic-monitoring-in-thoracic-surgical-patients
#13
Jacob Raphael, Lindsay A Regali, Robert H Thiele
PURPOSE OF REVIEW: This article reviews the technology and clinical data describing hemodynamic monitoring devices available to anesthesiologists and intensivists caring for patients undergoing thoracic surgical procedures, so that they may better utilize available technology to improve outcomes in this high-risk surgical population. RECENT FINDINGS: Noninvasive stroke volume monitors are based on several different technology platforms, all of which have distinct performance characteristics...
January 3, 2017: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/28056732/development-of-a-radiolabeled-amlodipine-analog-for-l-type-calcium-channel-imaging
#14
Tahereh Firouzyar, Amir Reza Jalilian, Mohammad Reza Aboudzadeh, Hossein Sadeghpour, Mehrban Pooladi, Mahdi Shafiee-Ardestani, Ali Khalaj
PURPOSE: The non-invasive imaging and quantification of L-type calcium channels in living tissues is of great interest in diagnosis of congestive heart failure, myocardial hypertrophy, irritable bowel syndrome etc. METHODS: Technetium-<sup>99m</sup> labeled amlodipine conjugate ([<sup>99m</sup>Tc]-DTPA-AMLO) was prepared starting freshly eluted (<1 h) <sup>99m</sup>Technetium pertechnetate (86.5 MBq) and conjugated DTPA-AMLO at pH 5 in 30 min at room temperature in high radiochemical purity (>99%, RTLC; specific activity: 55-60 GBq/mmol)...
January 4, 2017: Current Radiopharmaceuticals
https://www.readbyqxmd.com/read/28054515/method-validation-of-nanoparticle-tracking-analysis-to-measure-pulmonary-nanoparticle-content-the-size-distribution-in-exhaled-breath-condensate-depends-on-occupational-exposure
#15
Jean-Jacques Sauvain, Guillaume Suarez, Jean-Louis Edmé, Olivia Maria de Paula Alvez Bezerra, Keller Silveira, Lenio Amaral, Ana Paula Carneiro, Natalie Cherot-Kornobis, Annie Sobaszek, Sébastien Hulo
A particle exposure assessment based on the dose deposited in the lungs would be the gold standard for the evaluation of any resulting health effects. Measuring particles in exhaled breath condensate (EBC)-a matrix containing water and airway lining fluid-could help to evaluate particle retention in the lungs. This study aimed to (1) validate a nanoparticle tracking analysis (NTA) method for determining the particle number concentration and their hydrodynamic size distribution in EBC, and (2) apply this method to EBC collected from workers exposed to soapstone (n = 55) or quartz dust (n = 12) and controls (n = 11)...
January 5, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28050472/use-of-lung-ultrasound-for-diagnosing-acute-heart-failure-in-emergency-department-of-southern-india
#16
Manav Aggarwal, Mrigakshi Gupta, Vikrant Vijan, Anjith Vupputuri, Sanjeev Chintamani, Bishnukiran Rajendran, Rajesh Thachathodiyal, Rajiv Chandrasekaran
INTRODUCTION: Diagnosing heart failure is often a challenge for the healthcare providers due to it's non-specific and usually subtle physical presentations. The outcomes for treatment are strongly related to the stage of the disease. Considering the importance of early and accurate diagnosis, it is important to have an easy, inexpensive, non-invasive, reliable and reproducible method for diagnosis of heart failure. Recent advancement in radiology and cardiology are supporting the emerging technique of lung ultrasound through B-line evaluation for identifying extravascular lung water...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28048878/th-cd-209-08-quantification-of-the-interplay-effect-in-proton-pencil-beam-scanning-treatment-of-lung
#17
M Kang, S Huang, T Solberg, R Mayer, A Thomas, B Teo, J McDonough, C Simone, L Lin
PURPOSE: To quantify the dose degradation caused by the interplay effect based on a beam specific motion analysis in proton pencil beam scanning (PBS) treatment of lung tumors METHODS: PBS plans were optimized on average CT using a beam-specific PTV method for 10 consecutive patients with locally advanced non-small-cell-lung-cancer (NSCLC) treated with proton therapy to 6660/180 cGy. End inhalation (CT0) and end exhalation (CT50) were selected as the two extreme scenarios to acquire the relative stopping power ratio difference (Δrsp) for a respiration cycle...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048844/su-f-j-70-monte-carlo-study-on-a-cone-beam-computed-tomography-using-a-cross-type-carbon-fiber-antiscatter-grid
#18
K Usui, T Inoue, C Kurokawa, S Sugimoto, K Sasai, K Ogawa
PURPOSE: If a cone-beam computed tomography (CBCT) image can be used for adaptive radiotherapy (ART), an irradiated actual dose distribution can be verified on every treatment day. However, a CBCT image is commonly degraded by scattered photons and thus cannot be directly used for dose calculation. The purpose of the present study is to evaluate whether a cross-type carbon fiber antiscatter grid improves CBCT image quality using a Monte Carlo (MC) method for achieving CBCT-based ART. METHODS: We designed a new carbon fiber (C6 H10 O5 ) interspaced grid, which allows the grid ratio to be increased while maintaining the transmission of primary photons...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048754/su-f-j-204-carbon-digitally-reconstructed-radiography-cdrr-a-gpu-based-tool-for-fast-and-versatile-carbonimaging-simulation
#19
M F Dias, J Seco, G Baroni, M Riboldi
PURPOSE: Research in carbon imaging has been growing over the past years, as a way to increase treatment accuracy and patient positioning in carbon therapy. The purpose of this tool is to allow a fast and flexible way to generate CDRR data without the need to use Monte Carlo (MC) simulations. It can also be used to predict future clinically measured data. METHODS: A python interface has been developed, which uses information from CT or 4DCT and thetreatment calibration curve to compute the Water Equivalent Path Length (WEPL) of carbon ions...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048734/su-f-j-193-efficient-dose-extinction-method-for-water-equivalent-path-length-wepl-of-real-tissue-samples-for-validation-of-ct-hu-to-stopping-power-conversion
#20
R Zhang, E Baer, K Jee, G Sharp, J Flanz, H Lu
PURPOSE: For proton therapy, an accurate model of CT HU to relative stopping power (RSP) conversion is essential. In current practice, validation of these models relies solely on measurements of tissue substitutes with standard compositions. Validation based on real tissue samples would be much more direct and can address variations between patients. This study intends to develop an efficient and accurate system based on the concept of dose extinction to measure WEPL and retrieve RSP in biological tissue in large number of types...
June 2016: Medical Physics
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