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https://www.readbyqxmd.com/read/28641238/water-soluble-fraction-of-petroleum-induces-genotoxicity-and-morphological-effects-in-fat-snook-centropomus-parallelus
#1
Laila Carine Campos Medeiros, Frederico Augusto Cariello Delunardo, Larissa Novaes Simões, Marcelo Gustavo Paulino, Thais Souza Vargas, Marisa Narciso Fernandes, Rodrigo Scherer, Adriana Regina Chippari-Gomes
Petroleum hydrocarbons are one of the primary organic chemicals found in water bodies, and the water-soluble fraction of petroleum (WSFP) may be responsible for much of the toxic effects. In the present study, genotoxicity assays and histopathological analysis of the gills were analyzed for two experimental protocols: 1) Juvenile Centropomus parallelus were exposed to different concentrations of WFSP (0%, 25%, 50% and 75%) for 96h; 2) A second fish group was exposed to 50% WFSP for 168h followed by a post-exposure period for 168h in clean water (recovery)...
June 19, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28641235/computer-aided-training-sensorimotor-cortex-functions-in-humans-before-the-upper-limb-transplantation-using-virtual-reality-and-sensory-feedback
#2
Marek Kurzynski, Anna Jaskolska, Jaroslaw Marusiak, Andrzej Wolczowski, Przemyslaw Bierut, Lukasz Szumowski, Jerzy Witkowski, Katarzyna Kisiel-Sajewicz
One of the biggest problems of upper limb transplantation is lack of certainty as to whether a patient will be able to control voluntary movements of transplanted hands. Based on findings of the recent research on brain cortex plasticity, a premise can be drawn that mental training supported with visual and sensory feedback can cause structural and functional reorganization of the sensorimotor cortex, which leads to recovery of function associated with the control of movements performed by the upper limbs. In this study, authors - based on the above observations - propose the computer-aided training (CAT) system, which generating visual and sensory stimuli, should enhance the effectiveness of mental training applied to humans before upper limb transplantation...
June 15, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28641192/obstructive-neonatal-atrial-myxoma
#3
Federica Iezzi, Andrea Quarti, Alessandro Capestro, Marco Pozzi
INTRODUCTION: Cardiac myxoma is a benign neoplasm representing the most common primary cardiac tumor in adults, however it is unusual in neonates. It is represented by an endocardial mass that occupies the cardiac chamber. Although the majority of myxomas are attached to the fossa ovalis of the interatrial septum, they also attach to the walls of the cardiac chambers and to valve leaflets surfaces. Approximately 75% of myxomas are found in the left atrium, 20% are located in the right atrium, and rarely in the ventricles...
June 8, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28641182/unraveling-the-complexities-of-the-velocity-dependency-of-e-coli-retention-and-release-parameters-in-saturated-porous-media
#4
Salini Sasidharan, Scott A Bradford, Saeed Torkzaban, Xueyan Ye, Joanne Vanderzalm, Xinqiang Du, Declan Page
Escherichia coli transport and release experiments were conducted to investigate the pore-water velocity (v) dependency of the sticking efficiency (α), the fraction of the solid surface area that contributed to retention (Sf), the percentage of injected cells that were irreversibly retained (Mirr), and cell release under different (10-300mM) ionic strength (IS) conditions. Values of α, Sf, and Mirr increased with increasing IS and decreasing v, but the dependency on v was greatest at intermediate IS (30 and 50mM)...
June 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28641174/new-insights-into-the-oleate-flotation-response-of-feldspar-particles-of-different-sizes-anisotropic-adsorption-model
#5
Longhua Xu, Jia Tian, Houqin Wu, Wei Deng, Yaohui Yang, Wei Sun, Zhiyong Gao, Yuehua Hu
The anisotropic adsorption of sodium oleate (NaOL) on feldspar surfaces was investigated to elucidate the different flotation properties of feldspar particles of four different size ranges. Microflotation experiments showed that the feldspar flotation recovery of particles with sizes spanning different ranges decreased in the order 0-19>19-38>45-75>38-45μm. Zeta potential and FTIR measurements showed that NaOL was chemically adsorbed on the Al sites of the feldspar surface. The anisotropic surface energies and broken bond densities estimated by density functional theory calculations showed that, although feldspar mostly exposed (010) and (001) surfaces, only the (001) surfaces contained the Al sites needed for NaOL adsorption...
June 8, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28641164/protective-effects-of-flavonoids-against-alzheimer-s-disease-related-neural-dysfunctions
#6
REVIEW
Mahsa Bakhtiari, Yunes Panahi, Javad Ameli, Behrad Darvishi
Senile ages of human life is mostly associated with developmental of several neurological complicated conditions including decreased cognition and reasoning, increased memory loss and impaired language performance. Alzheimer's disease (AD) is the most prevalent neural disorder associated with dementia, consisting of about 70% of dementia reported cases. Failure of currently approved chemical anti-AD therapeutic agents has once again brought up the idea of administering naturally occurring compounds as effective alternative and/or complementary regimens in AD treatment...
June 19, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28641075/postconditioning-with-intralipid-emulsion-protects-against-reperfusion-injury-in-postinfarct-remodeled-rat-hearts-by-activation-of-ros-akt-erk-signaling
#7
Michael Zaugg, Phing-How Lou, Eliana Lucchinetti, Manoj Gandhi, Alexander S Clanachan
The clinically used lipid emulsion Intralipid (ILE) reduces ischemia reperfusion injury in healthy rodent hearts. We tested whether ILE is cardioprotective in postinfarct remodeled hearts. Postinfarct remodeled and sham Sprague-Dawley rat hearts were perfused in working mode and subjected to ischemia (15 minutes) and reperfusion (30 minutes). Left ventricular (LV) work was measured in hearts that were untreated or that received ILE (1%) postconditioning administered at the onset of reperfusion, or the reactive oxygen species (ROS) scavenger N-(2-mercaptopropionyl)-glycine (10 μM) alone or in combination with ILE...
June 1, 2017: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/28640971/enhanced-recovery-programme-following-laparoscopic-colorectal-resection-for-elderly-patients
#8
Wei Gen Zeng, Meng Jia Liu, Zhi Xiang Zhou, Zhen Jun Wang
BACKGROUND: The aim of this study was to investigate the feasibility and safety of an enhanced recovery programme (ERP) in patients aged ≥75 years who undergo laparoscopic surgery for colorectal cancer. METHODS: Patients were divided into two groups according to perioperative management: the ERP group (Group A, n = 94) and the conventional perioperative care group (Group B, n = 157). The postoperative outcomes were compared between two groups. RESULTS: There were no differences in terms of age, gender, American Society of Anesthesiologists score, operative time or blood loss between two groups...
June 22, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/28640957/restoration-of-cutaneous-pigmentation-by-transplantation-to-mice-of-isogeneic-human-melanocytes-in-dermal-epidermal-engineered-skin-substitutes
#9
Steven T Boyce, Christopher M Lloyd, Mark C Kleiner, Viki B Swope, Zalfa Abdel-Malek, Dorothy M Supp
Autologous engineered skin substitutes (ESS) containing melanocytes (hM) may restore pigmentation, and photoprotection after grafting to full-thickness skin wounds. In the current study, normal hM were isolated from discard skin, propagated with or without tyrosinase inhibitors, cryopreserved, recovered into culture, and added to ESS (ESS-P) before transplantation. ESS-P were incubated in either UCMC160/161 or UCDM1 medium, scored for hM densities, and grafted to mice. The results showed that: sufficient hM can be propagated to expand donor tissue by 100-fold; incubation of hM in tyrosinase inhibitors reduced pigment levels but did not change hM recovery after cryopreservation; hM densities in ESS-P were greater after incubation in UCDM1 than UCMC160 medium; hM were localized to the dermal-epidermal junction of ESS-P; and UCDM1 medium promoted earlier pigment distribution and density...
June 22, 2017: Pigment Cell & Melanoma Research
https://www.readbyqxmd.com/read/28640913/temporal-patterns-of-deepwater-horizon-impacts-on-the-benthic-infauna-of-the-northern-gulf-of-mexico-continental-slope
#10
Michael G Reuscher, Jeffrey G Baguley, Nathan Conrad-Forrest, Cynthia Cooksey, Jeffrey L Hyland, Christopher Lewis, Paul A Montagna, Robert W Ricker, Melissa Rohal, Travis Washburn
The Deepwater Horizon oil spill occurred in spring and summer 2010 in the northern Gulf of Mexico. Research cruises in 2010 (approximately 2-3 months after the well had been capped), 2011, and 2014 were conducted to determine the initial and subsequent effects of the oil spill on deep-sea soft-bottom infauna. A total of 34 stations were sampled from two zones: 20 stations in the "impact" zone versus 14 stations in the "non-impact" zone. Chemical contaminants were significantly different between the two zones...
2017: PloS One
https://www.readbyqxmd.com/read/28640895/the-interplay-of-climate-intervention-and-imported-cases-as-determinants-of-the-2014-dengue-outbreak-in-guangzhou
#11
Qu Cheng, Qinlong Jing, Robert C Spear, John M Marshall, Zhicong Yang, Peng Gong
Dengue is a fast spreading mosquito-borne disease that affects more than half of the population worldwide. An unprecedented outbreak happened in Guangzhou, China in 2014, which contributed 52 percent of all dengue cases that occurred in mainland China between 1990 and 2015. Our previous analysis, based on a deterministic model, concluded that the early timing of the first imported case that triggered local transmission and the excessive rainfall thereafter were the most important determinants of the large final epidemic size in 2014...
June 22, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28640888/mechanisms-of-acute-neurovascular-protection-with-at1-blockade-after-stroke-effect-of-prestroke-hypertension
#12
Ahmed Alhusban, Anna Kozak, Bindu Pillai, Heba Ahmed, Mohammed A Sayed, Maribeth H Johnson, Tauheed Ishrat, Adviye Ergul, Susan C Fagan
Stroke is a leading cause of adult disability worldwide. Improving stroke outcome requires an orchestrated interplay that involves up regulation of pro-survival pathways and a concomitant suppression of pro-apoptotic mediators. In this investigation, we assessed the involvement of eNOS in the AT1 blocker-mediated protective and pro-recovery effects in animals with hypertension. We also evaluated the effect of acute eNOS inhibition in hypertensive animals. To achieve these goals, spontaneously hypertensive rats (SHR) were implanted with blood pressure transmitters, and randomized to receive either an eNOS inhibitor (L-NIO) or saline one hour before cerebral ischemia induction...
2017: PloS One
https://www.readbyqxmd.com/read/28640882/quantitation-of-underivatized-branched-chain-amino-acids-in-sport-nutritional-supplements-by-capillary-electrophoresis-with-direct-or-indirect-uv-absorbance-detection
#13
Jun Qiu, Jinhao Wang, Zhongqi Xu, Huiqing Liu, Jie Ren
The branched-chain amino acids (BCAAs) including leucine (Leu), isoleucine (Ile) and valine (Val) play a pivotal role in the human body. Herein, we developed capillary electrophoresis (CE) coupled with conventional UV detector to quantify underivatized BCAAs in two kinds of sport nutritional supplements. For direct UV detection at 195 nm, the BCAAs (Leu, two enantiomers of Ile and Val) were separated in a background electrolyte (BGE) consisting of 40.0 mmol/L sodium tetraborate, and 40.0 mmol/L β-cyclodextrin (β-CD) at pH 10...
2017: PloS One
https://www.readbyqxmd.com/read/28640869/development-of-an-automated-size-based-filtration-system-for-isolation-of-circulating-tumor-cells-in-lung-cancer-patients
#14
Satomi Yagi, Yasuhiro Koh, Hiroaki Akamatsu, Kuninobu Kanai, Atsushi Hayata, Nahomi Tokudome, Keiichiro Akamatsu, Katsuya Endo, Seita Nakamura, Masayuki Higuchi, Hisashige Kanbara, Masanori Nakanishi, Hiroki Ueda, Nobuyuki Yamamoto
Circulating tumor cells (CTCs), defined as tumor cells circulating in the peripheral blood of patients with solid tumors, are relatively rare. Diagnosis using CTCs is expected to help in the decision-making for precision cancer medicine. We have developed an automated microcavity array (MCA) system to detect CTCs based on the differences in size and deformability between tumor cells and normal blood cells. Herein, we evaluated the system using blood samples from non-small-cell lung cancer (NSCLC) and small-cell lung cancer (SCLC) patients...
2017: PloS One
https://www.readbyqxmd.com/read/28640722/stroke-ineffective-tube-securement-reduces-nutrition-and-drug-treatment
#15
Sophie Brazier, Stephen J Taylor, Kaylee Allan, Rowan Clemente, Deirdre Toher
Stroke patients with dysphagia often depend on nutrition, hydration and medication via nasogastric (NG) feeding tubes. Securing tubes using tape is associated with repeated tube loss. In this study, the authors determined cause and effect by auditing tube placement methods, delays incurred, duration and costs. Of 202 NG tube placements in 75 patients, 67 placements occurred in 17 patients over a full course of enteral nutrition (EN) and 40 of these placements were tracked. Tubes were secured by tape in 100%, mittens 31% and special observation 5...
June 22, 2017: British Journal of Nursing: BJN
https://www.readbyqxmd.com/read/28640718/setting-up-recovery-clinics-and-promoting-service-user-involvement
#16
Thomas John
Service user involvement in mental health has gained considerable momentum. Evidence from the literature suggests that it remains largely theoretical rather than being put into practice. The current nature of acute inpatient mental health units creates various challenges for nurses to put this concept into practice. Recovery clinics were introduced to bridge this gap and to promote service user involvement practice within the current care delivery model at Kent and Medway NHS and Social Care Partnership Trust...
June 22, 2017: British Journal of Nursing: BJN
https://www.readbyqxmd.com/read/28640646/an-enzyme-linked-immunosorbent-assay-for-monoester-type-aconitic-alkaloids-and-its-application-in-the-pharmacokinetic-study-of-benzoylhypaconine-in-rats
#17
Can-Can Liu, Yun-Hui Xu, Shuai Yuan, Yu Xu, Mo-Li Hua
A new enzyme-linked immunosorbent assay (ELISA) method for quantitative determination of monoester-type aconitic alkaloids was developed. The antibodies derived from the immunogen of benzoylmesaconine (BM) could be electively affined to benzoylaconitine-type alkaloids with an ester bond (14-benzoyl-), especially to benzoylhypaconine (BH, 140.02% of cross-reactivity). The effective working range of BH was 1 ng/ml to 5 μg/ml; the lower limit of detection and the quantification were 0.35 and 0.97 ng/ml, respectively...
June 22, 2017: Journal of Asian Natural Products Research
https://www.readbyqxmd.com/read/28640585/thermally-and-electrically-triggered-triple-shape-memory-behavior-of-poly-vinyl-acetate-poly-lactic-acid-due-to-graphene-induced-phase-separation
#18
Mohammad Sabzi, Masoud Babaahmadi, Mohammadreza Rahnama
This work aimed to develop a facile and broadly applicable method for fabricating a multi-stimuli responsive triple-shape memory polymer (SMP). Hence, herein the SMPs were prepared through the simple physical blending of two commercially available biopolymers, poly(lactic acid) (PLA) and poly(vinyl acetate) (PVAc), in the presence of robust and conductive graphene nanoplatelets. Interestingly, atomic force microscopy (AFM) observations and thermal analyses revealed that the presence of nanofillers led to phase separation and appearance of two well-separated transition temperatures in the blend of these two miscible polymers...
June 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28640582/thermoelectric-performance-of-se-cd-co-doped-snte-via-microwave-solvothermal-method
#19
Lijun Wang, Siyi Chang, Shuqi Zheng, Teng Fang, Wenlin Cui, Pengpeng Bai, Luo Yue, Zhigang Chen
Extensive attention has been focused on thermoelectric performance optimization of SnTe because of its potential in waste heat recovery. Here, we fabricate high thermoelectric performance Se/Cd co-doped SnTe octahedral particles by microwave-stimulated solvothermal method. The SnTe-based octahedral particles have the sizes ranging from several micrometers to hundreds of nanometers, forming dense bulks after spark plasma sintering. Combined with the strong point defect scattering by Se and Cd dopants, a low thermal conductivity of 1...
June 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28640579/rapid-and-robust-quantification-of-p-xyleneselenocyanate-in-plasma-via-derivatization
#20
Wenyi Zheng, Fadwa Benkessou, Brigitte Twelkmeyer, Siyao Wang, Tobias Ginman, Håkan Ottosson, Manuchehr Abedi-Valugerdi, Maria Angels Subirana, Ying Zhao, Moustapha Hassan
p-Xyleneselenocyanate (p-XSC) is one of the most investigated selenium compounds in cancer-prevention and -therapy. Despite the potent anti-cancer property, there is still no proper method to perform the quantitative analysis of p-XSC in plasma. In this investigation, we aimed at developing a method based on liquid chromatography-mass spectrometry (LC-MS) for the measurement of p-XSC in plasma. Direct deproteinization was first used to extract parent p-XSC from plasma, but failed to achieve high recovery rate (< 2%) due to formation of selenium-sulfur bond between p-XSC and plasma protein...
June 22, 2017: Analytical Chemistry
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