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https://www.readbyqxmd.com/read/27920522/incorporation-of-heparin-binding-proteins-into-preformed-dextran-sulfate-chitosan-nanoparticles
#1
Paula Zaman, Julia Wang, Adam Blau, Weiping Wang, Tina Li, Daniel S Kohane, Joseph Loscalzo, Ying-Yi Zhang
Incorporation of proteins into dextran sulfate (DS)-chitosan (CS) nanoparticles (DSCS NPs) is commonly performed using entrapment procedures, in which protein molecules are mixed with DS and CS until particle formation occurs. As DS is an analog of heparin, the authors examined whether proteins could be directly incorporated into preformed DSCS NPs through a heparin binding domain-mediated interaction. The authors formulated negatively-charged DSCS NPs, and quantified the amount of charged DS in the outer shell of the particles...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27919155/-possible-health-risks-from-asbestos-in-drinking-water
#2
Agostino Di Ciaula, Valerio Gennaro
The recent finding of asbestos fibres in drinking water (up to 700.000 fibres/litres) in Tuscany (Central Italy) leads to concerns about health risks in exposed communities. Exposure to asbestos has been linked with cancer at several levels of the gastrointestinal tract, and it has been documented, in an animal model, a direct cytotoxic effect of asbestos fibres on the ileum. It has been recently described a possible link between asbestos and intrahepatic cholangiocarcinoma, and asbestos fibres have been detected in humans in histological samples from colon cancer and in gallbladder bile...
November 2016: Epidemiologia e Prevenzione
https://www.readbyqxmd.com/read/27916704/design-and-development-of-dry-powder-sulfobutylether-%C3%AE-cyclodextrin-complex-for-pulmonary-delivery-of-fisetin
#3
Noratiqah Mohtar, Kevin M G Taylor, Khalid Sheikh, Satyanarayana Somavarapu
This study has investigated complexation of fisetin, a natural flavonoid, with three types of cyclodextrins to improve its solubility. Sulfobutylether-β-cyclodextrin (SBE-β-CD) showed the highest complexation efficiency while maintaining the in vitro antioxidant activity of fisetin. Addition of 20%v/v ethanol in water improved the amount of solubilized fisetin in the complex 5.9-fold compared to the system containing water alone. Spray drying of fisetin-SBE-β-CD complex solution in the presence of ethanol produced a dry powder with improved aerosolization properties when delivered from a dry powder inhaler, indicated by a 2-fold increase in the fine particle fraction (FPF) compared to the powder produced from the complex solution containing water alone...
December 1, 2016: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/27916588/genotoxicity-evaluation-of-hwanglyeonhaedok-tang-an-herbal-formula
#4
Seong Eun Jin, Mee-Young Lee, Chang-Seob Seo, Hyekyung Ha, Ji-Young Kim, Hyeun-Kyoo Shin
ETHNOPHARMACOLOGICAL RELEVANCE: Hwanglyeonhaedok-tang (Huanglianjiedu-tang, Orengedoku-to), a traditional herbal formula, is used for the treatment of inflammatory, gastrointestinal and cardiovascular diseases. PURPOSE: The purpose of this study was to evaluate the genotoxic potential of Hwanglyeonhaedok-tang water extract (HLHDT). METHODS: A genotoxicity test was conducted using a bacterial reverse mutation test (Ames test), an in vitro chromosome aberration test using Chinese hamster lung cells, and an in vivo micronucleus test using ICR mouse bone marrow...
December 1, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27916365/efficacy-and-safety-of-innoseal-for-air-leak-after-pulmonary-resection-a-case-control-study
#5
Francesco Petrella, Alessandro Borri, Daniela Brambilla, Giorgio Calanca, Nicola Vezzani, Antonio Colantoni, Adolfo Gasparetto, Lorenzo Spaggiari
BACKGROUND: Prolonged air leak is one of the most common complications after lung surgery and the cause of prolonged hospital stay frequently associated with major postoperative morbidity and thus responsible for even higher hospital costs. This case-control study was designed to test the sealing efficacy and safety of Enable-Innoseal TP4 in patients undergoing pulmonary resection for lung cancer. METHODS: This was a case-control trial enrolling patients with primary or single site metastatic lung cancer scheduled for elective anatomic or nonanatomic pulmonary resection presenting intraoperative grade 1 or 2 air leak at water submersion test; the study group population was then matched 1:1 according to surgical procedure, male/female ratio, preoperative FEV1, and age...
November 2016: Journal of Surgical Research
https://www.readbyqxmd.com/read/27915187/dose-response-models-and-a-quantitative-microbial-risk-assessment-framework-for-the-mycobacterium-avium-complex-that-account-for-recent-developments-in-molecular-biology-taxonomy-and-epidemiology
#6
REVIEW
Kerry A Hamilton, Mark H Weir, Charles N Haas
Mycobacterium avium complex (MAC) is a group of environmentally-transmitted pathogens of great public health importance. This group is known to be harbored, amplified, and selected for more human-virulent characteristics by amoeba species in aquatic biofilms. However, a quantitative microbial risk assessment (QMRA) has not been performed due to the lack of dose response models resulting from significant heterogeneity within even a single species or subspecies of MAC, as well as the range of human susceptibilities to mycobacterial disease...
November 24, 2016: Water Research
https://www.readbyqxmd.com/read/27914648/atomization-method-for-verifying-size-effects-of-inhalable-particles-on-lung-damage-of-mice
#7
Chen Tao, Yue Tang, Lan Zhang, Yonggang Tian, Yingmei Zhang
To explore the size effects of inhalable particles on lung damage, aqueous aerosol containing cadmium was studied as a model to design a new type of two-stage atomization device that was composed of two adjustable parts with electronic ultrasonic atomization and pneumatic atomization. The working parameters and effectiveness of this device were tested with H2O atomization and CdCl2 inhalation, respectively. By gravimetrically detecting the mass concentrations of PM2.5 and PM10 and analysing the particle size with a laser sensor, we confirmed the particle size distribution of the aqueous aerosol produced by the new device under different working conditions...
December 1, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27910825/monte-carlo-studies-on-water-and-lif-cavity-properties-for-dose-reporting-quantities-when-using-x-ray-and-brachytherapy-sources
#8
Isabela Soares Lopes Branco, Paula Cristina Guimarães Antunes, Gabriel Paiva Fonseca, Hélio Yoriyaz
Model-based dose calculation algorithms (MBDCAs) are the current tools to estimate dose in brachytherapy, which takes into account heterogeneous medium, therefore, departing from water-based formalism (TG-43). One aspect associated to MBCDA is the choice of dose specification medium since it offers two possibilities to report dose: (a) dose to medium in medium, D m,m; and (b) dose to water in medium, D w,m. The discussion about the preferable quantity to be reported is underway. The dose conversion factors, DCF, between dose to water in medium, D w,m, and dose to medium in medium, D m,m, is based on cavity theory and can be obtained using different approaches...
December 21, 2016: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/27910771/induction-of-flavin-containing-monooxygenase-in-mice-by-oral-administration-of-phellinus-baumii-agaricomycetes-extract
#9
Batbayar Sainkhuu, Beom Su Park, Ha Won Kim
Phellinus baumii is a yellow mushroom long used in alternative medicine in Korea and other central Asian countries. To identify genes affected by a single or 7-day oral administration of a water extract of Ph. Baumii, mouse liver tissue was analyzed using microarrays. The results showed that 8 and 23 genes were upregulated and 3 and 11 genes downregulated more than 3-fold by single and multiple oral administrations of 100 mg/kg PBE, respectively. Among the upregulated genes, the expression of 3 flavin-containing monooxygenase (Fmo) family genes, Fmo2-4, was upregulated in a concentration-dependent manner...
2016: International Journal of Medicinal Mushrooms
https://www.readbyqxmd.com/read/27908701/inhibitory-effects-of-l-theanine-on-airway-inflammation-in-ovalbumin-induced-allergic-asthma
#10
Yong Pil Hwang, Sun Woo Jin, Jae Ho Choi, Chul Yung Choi, Hyung Gyun Kim, Se Jong Kim, Yongan Kim, Kyung Jin Lee, Young Chul Chung, Hye Gwang Jeong
L-theanine, a water-soluble amino acid isolated from green tea (Camellia sinensis), has anti-inflammatory activity, antioxidative properties, and hepatoprotective effects. However, the anti-allergic effect of L-theanine and its underlying molecular mechanisms have not been elucidated. In this study, we investigated the protective effects of L-theanine on asthmatic responses, particularly airway inflammation and oxidative stress modulation in an ovalbumin (OVA)-induced murine model of asthma. Treatment with L-theanine dramatically attenuated the extensive trafficking of inflammatory cells into bronchoalveolar lavage fluid (BALF)...
November 28, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27908382/water-soluble-and-organic-extracts-of-airborne-particulate-matter-induce-micronuclei-in-human-lung-epithelial-a549-cells
#11
Isabel C Palacio, Silvia B M Barros, Deborah A Roubicek
The in vitro genotoxic effects of organic and water-soluble fractions of airborne particulate matter (PM10) with the cytokinesis blocked micronucleus (MN) test in human alveolar carcinoma cells A549 were investigated. Samples were collected in three different sites of São Paulo State, Brazil, and fifteen soluble metals and the sixteen EPÁs priority polycyclic aromatic hydrocarbons (PAH) were chemically determined. PAHs prevailing were fluoranthene and benzo(ghi)perylene. In the water-soluble extracts, highest concentration of metals was found for zinc, iron, and copper in all places of collection...
December 2016: Mutation Research
https://www.readbyqxmd.com/read/27907078/signal-of-acceleration-and-physical-mechanism-of-water-cycle-in-xinjiang-china
#12
Guo-Lin Feng, Yong-Ping Wu
Global warming accelerates water cycle with features of regional difference. However, little is known about the physical mechanism behind the phenomenon. To reveal the links between water cycle and climatic environment, we analyzed the changes of water cycle elements and their relationships with climatic and environmental factors. We found that when global warming was significant during the period of 1986-2003, the precipitation in Tarim mountains as well as Xinjiang increased rapidly except for Tarim plains, which indicated that there existed a signal of acceleration for water cycle in Xinjiang...
2016: PloS One
https://www.readbyqxmd.com/read/27906031/contrasting-biological-potency-of-particulate-matter-collected-at-sites-impacted-by-distinct-industrial-sources
#13
Errol M Thomson, Dalibor Breznan, Subramanian Karthikeyan, Christine MacKinnon-Roy, Ngoc Q Vuong, Ewa Dabek-Zlotorzynska, Valbona Celo, Jean-Pierre Charland, Prem Kumarathasan, Jeffrey R Brook, Renaud Vincent
BACKGROUND: Industrial sources contribute a significant proportion of anthropogenic particulate matter (PM) emissions, producing particles of varying composition that may differentially impact health. This study investigated the in vitro toxicity of ambient PM collected near industrial sites in relation to particle size and composition. METHODS: Size-fractionated particles (ultrafine, PM0.1-2.5, PM2.5-10, PM>10) were collected in the vicinity of steel, copper, aluminium, and petrochemical industrial sites...
December 1, 2016: Particle and Fibre Toxicology
https://www.readbyqxmd.com/read/27903671/sports-related-lung-injury-during-breath-hold-diving
#14
Tanja Mijacika, Zeljko Dujic
The number of people practising recreational breath-hold diving is constantly growing, thereby increasing the need for knowledge of the acute and chronic effects such a sport could have on the health of participants. Breath-hold diving is potentially dangerous, mainly because of associated extreme environmental factors such as increased hydrostatic pressure, hypoxia, hypercapnia, hypothermia and strenuous exercise.In this article we focus on the effects of breath-hold diving on pulmonary function. Respiratory symptoms have been reported in almost 25% of breath-hold divers after repetitive diving sessions...
December 2016: European Respiratory Review: An Official Journal of the European Respiratory Society
https://www.readbyqxmd.com/read/27902779/differential-cytokine-gene-expression-in-granulomas-from-lungs-and-lymph-nodes-of-cattle-experimentally-infected-with-aerosolized-mycobacterium-bovis
#15
Mitchell V Palmer, Tyler C Thacker, W Ray Waters
The hallmark lesion of tuberculosis in humans and animals is the granuloma. The granuloma represents a distinct host cellular immune response composed of epithelioid macrophages, lymphocytes, and multinucleated giant cells, often surrounding a caseous necrotic core. Within the granuloma, host-pathogen interactions determine disease outcome. Factors within the granulomas such as cytokines and chemokines drive cell recruitment, activity, function and ultimately the success or failure of the host's ability to control infection...
2016: PloS One
https://www.readbyqxmd.com/read/27901646/the-time-dependent-health-and-biochemical-effects-in-rats-exposed-to-stainless-steel-welding-dust-and-its-soluble-form
#16
Tadeusz Halatek, Magdalena Stanislawska, Irena Kaminska, Malgorzata Cieslak, Radoslaw Swiercz, Wojciech Wasowicz
Welding processes that generate fumes containing toxic metals, such as hexavalent chromium (Cr(VI)), manganese (Mn), and nickel (Ni), have been implicated in lung injury, inflammation, and lung tumor promotion in animal models. The principal objective of this study was to determine the dynamics of toxic effects of inhalation exposure to morphologically rated welding dust from stainless steel welding and its soluble form in TSE System with a dynamic airflow. We assessed the pulmonary toxicity of welding dust in Wistar rats exposed to 60...
November 30, 2016: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/27901016/relationships-between-arsenic-concentrations-in-drinking-water-and-lung-and-bladder-cancer-incidence-in-u-s-counties
#17
William M Mendez, Sorina Eftim, Jonathan Cohen, Isaac Warren, John Cowden, Janice S Lee, Reeder Sams
Increased risks of lung and bladder cancer have been observed in populations exposed to high levels of inorganic arsenic. However, studies at lower exposures (i.e., less than 100 μg/l in water) have shown inconsistent results. We therefore conducted an ecological analysis of the association between historical drinking water arsenic concentrations and lung and bladder cancer incidence in U.S. counties. We used drinking water arsenic concentrations measured by the U.S. Geological Survey and state agencies in the 1980s and 1990s as proxies for historical exposures in counties where public groundwater systems and private wells are important sources of drinking water...
November 30, 2016: Journal of Exposure Science & Environmental Epidemiology
https://www.readbyqxmd.com/read/27899896/respiratory-function-in-voluntary-participating-patagonia-sea-lions-otaria-flavescens-in-sternal-recumbency
#18
Andreas Fahlman, Johnny Madigan
We measured esophageal pressures (n = 4), respiratory flow rates (n = 5), and expired O2 and CO2 (n = 4) in five adult Patagonia sea lions (Otaria flavescens, body mass range 94.3-286.0 kg) during voluntary breaths while laying down out of water. The data were used to estimate the dynamic specific lung compliance (sCL), the O2 consumption rate ([Formula: see text]O2) and CO2 production rates ([Formula: see text]CO2) during rest. Our results indicate that the resting tidal volume in Patagonia sea lions is approximately 47-73% of the estimated total lung capacity...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27894312/release-of-copper-amended-particles-from-micronized-copper-pressure-treated-wood-during-mechanical-abrasion
#19
Chiara Civardi, Lukas Schlagenhauf, Jean-Pierre Kaiser, Cordula Hirsch, Claudio Mucchino, Adrian Wichser, Peter Wick, Francis W M R Schwarze
BACKGROUND: We investigated the particles released due to abrasion of wood surfaces pressure-treated with micronized copper azole (MCA) wood preservative and we gathered preliminary data on its in vitro cytotoxicity for lung cells. The data were compared with particles released after abrasion of untreated, water (0% MCA)-pressure-treated, chromated copper (CC)-pressure-treated wood, and varnished wood. Size, morphology, and composition of the released particles were analyzed. RESULTS: Our results indicate that the abrasion of MCA-pressure-treated wood does not cause an additional release of nanoparticles from the unreacted copper (Cu) carbonate nanoparticles from of the MCA formulation...
November 28, 2016: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/27884716/therapeutic-effects-of-traditionalchinesemedicineniubeixiaohe-in-mouse-tuberculosis-models
#20
Yan Liang, Xiaomei Wang, Jinying Song, Lan Wang, Dan Chen, Yourong Yang, Xuejuan Bai, Jie Wang, Yingchang Shi, Shibing Chen, Jun Liu, Cunwei Yang, Huafeng Luo, Guangling Liu, Xueqiong Wu
ETHNOPHARMACOLOGICAL RELEVANCE: The traditional Chinese medicine Niubeixiaohe (NBXH) is an effective anti-tuberculosis prescription, which is made up of Bulbus Fritillariae Cirrhosae, Rhizoma Bletillae, Radix Platycodonis, Fructus Arctii, Herba Houttuyniae and Glutinous rice. In this study, NBXH powder (I) and three kinds of NBXH extracts (II, III, and IV) were prepared. The water decoction of NBXH had been used to treat TB in clinic sixteen years suggested that it was effective to treat TB...
November 21, 2016: Journal of Ethnopharmacology
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