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https://www.readbyqxmd.com/read/28225597/interfacial-design-of-ternary-mixed-matrix-membranes-containing-pebax-1657-silver-nanopowder-bmim-bf4-for-improved-co2-separation-performance
#1
Ehsan Ghasemi Estahbanati, Mohammadreza Omidkhah, Abtin Ebadi Amooghin
In this research, Pebax1657 as an organic phase and silver nanoparticles as an inorganic phase were used for preparation of binary mixed matrix membranes (MMMs). Silver nanoparticles as a filler could enter the polymer chains and enhance the gas permeability by increasing the fractional free volume of membranes. Afterwards, ternary MMMs were fabricated by addition of 1-Butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF4]) ionic liquid, in order to have better polymer/filler adhesion and eliminate interfacial defects and non-selective voids...
February 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28225088/the-general-pts-component-hpr-determines-the-preference-for-glucose-over-mannitol
#2
Mangyu Choe, Young-Ha Park, Chang-Ro Lee, Yeon-Ran Kim, Yeong-Jae Seok
Preferential sugar utilization is a widespread phenomenon in biological systems. Glucose is usually the most preferred carbon source in various organisms, especially in bacteria where it is taken up via the phosphoenolpyruvate:sugar phosphotransferase system (PTS). The currently proposed model for glucose preference over non-PTS sugars in enteric bacteria including E. coli is strictly dependent on the phosphorylation state of the glucose-specific PTS component, enzyme IIA(Glc) (EIIA(Glc)). However, the mechanism of the preference among PTS sugars is largely unknown in Gram-negative bacteria...
February 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28219320/microorganism-and-agricultural-based-biosorbents-towards-removal-of-cadmium-from-waste-water-an-overview
#3
Souvik Pal, Subhankar Mukherjee, Nabarun Bhattacharyya
BACKGROUND: Non-degradable and persistent nature of Cadmium (Cd) poses high toxicity to human, plants and animals. Several industrial processes generated wastes are the main anthropogenic pathway through which Cd enters into the environment. Although, World Health Organization (WHO) has set the limit of Cd in drinking water is 0.005 mg L-1, the industrial activities release much higher concentrations of metal ions to the water stream than the prescribed limits, which leads to the increasing health hazards and environmental pollution...
February 20, 2017: Recent Patents on Biotechnology
https://www.readbyqxmd.com/read/28219031/aspartate-aminotransferase-is-potently-inhibited-by-copper-complexes-exploring-copper-complex-binding-proteome
#4
Yuqi Jia, Liping Lu, Caixia Yuan, Sisi Feng, Miaoli Zhu
Recent researches indicated that a copper complex-binding proteome that potently interacted with copper complexes and then influenced cellular metabolism might exist in organism. In order to explore the copper complex-binding proteome, a copper chelating ion-immobilized affinity chromatography (Cu-IMAC) column and mass spectrometry were used to separate and identify putative Cu-binding proteins in primary rat hepatocytes. A total of 97 putative Cu-binding proteins were isolated and identified. Five higher abundance proteins, aspartate aminotransferase (AST), malate dehydrogenase (MDH), catalase (CAT), calreticulin (CRT) and albumin (Alb) were further purified using a SP-, and (or) Q-Sepharose Fast Flow column...
February 11, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/28217728/association-between-socioeconomic-and-psychological-experiences-of-parents-with-children-on-leukemia-treatment-in-kenyatta-national-hospital-kenya
#5
Roselyne Anyango Okumu, Margret Muiva, Miriam Wagoro, Fatmah Abdallah, Erick Oweya
OBJECTIVE: The survival rate for children with leukemia has increased dramatically since the late 1990s; treatment effects of the disease can be extremely stressful for families. Research on psychological and socioeconomic effects of leukemia treatment had been conducted in Western countries, but little is known within Africa including Kenya. METHODS: This was a cross-sectional study with a sample of 62 out of 72 parents of children undergoing leukemia treatment at Kenyatta National Hospital...
January 2017: Asia-Pacific Journal of Oncology Nursing
https://www.readbyqxmd.com/read/28213584/using-the-biology-card-sorting-task-to-measure-changes-in-conceptual-expertise-during-postsecondary-biology-education
#6
Sarah A Bissonnette, Elijah D Combs, Paul H Nagami, Victor Byers, Juliana Fernandez, Dinh Le, Jared Realin, Selina Woodham, Julia I Smith, Kimberly D Tanner
While there have been concerted efforts to reform undergraduate biology toward teaching students to organize their conceptual knowledge like experts, there are few tools that attempt to measure this. We previously developed the Biology Card Sorting Task (BCST), designed to probe how individuals organize their conceptual biological knowledge. Previous results showed the BCST could differentiate between different populations, namely non-biology majors (NBM) and biology faculty (BF). In this study, we administered the BCST to three additional populations, using a cross-sectional design: entering biology majors (EBM), advanced biology majors (ABM), and biology graduate students (BGS)...
2017: CBE Life Sciences Education
https://www.readbyqxmd.com/read/28213330/drug-discovery-strategies-in-the-field-of-tumor-energy-metabolism-limitations-by-metabolic-flexibility-and-metabolic-resistance-to-chemotherapy
#7
REVIEW
N D Amoedo, E Obre, R Rossignol
The search for new drugs capable of blocking the metabolic vulnerabilities of human tumors has now entered the clinical evaluation stage, but several projects already failed in phase I or phase II. In particular, very promising in vitro studies could not be translated in vivo at preclinical stage and beyond. This was the case for most glycolysis inhibitors that demonstrated systemic toxicity. A more recent example is the inhibition of glutamine catabolism in lung adenocarcinoma that failed in vivo despite a strong addiction of several cancer cell lines to glutamine in vitro...
February 14, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28213304/photocatalytic-effects-of-titanium-dioxide-nanoparticles-on-aquatic-organisms-current-knowledge-and-suggestions-for-future-research
#8
REVIEW
Vena N Haynes, J Evan Ward, Brandon J Russell, Alexander G Agrios
Nanoparticles are entering natural systems through product usage, industrial waste and post-consumer material degradation. As the production of nanoparticles is expected to increase in the next decade, so too are predicted environmental loads. Engineered metal-oxide nanomaterials, such as titanium dioxide, are known for their photocatalytic capabilities. When these nanoparticles are exposed to ultraviolet radiation in the environment, however, they can produce radicals that are harmful to aquatic organisms...
February 9, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28213297/retention-of-silver-nano-particles-and-silver-ions-in-calcareous-soils-influence-of-soil-properties
#9
Samaneh Rahmatpour, Mehran Shirvani, Mohammad R Mosaddeghi, Mehdi Bazarganipour
The rapid production and application of silver nanoparticles (AgNPs) have led to significant release of AgNPs into the terrestrial environments. Once released into the soil, AgNPs could enter into different interactions with soil particles which play key roles in controlling the fate and transport of these nanoparticles. In spite of that, experimental studies on the retention of AgNPs in soils are very scarce. Hence, the key objective of this research was to find out the retention behavior of AgNPs and Ag(I) ions in a range of calcareous soils...
February 14, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28213040/the-locus-of-heat-resistance-lhr-mediates-heat-resistance-in-salmonella-enterica-escherichia-coli-and-enterobacter-cloacae
#10
Ryan G Mercer, Brian D Walker, Xianqin Yang, Lynn M McMullen, Michael G Gänzle
Enterobacteriaceae comprise food spoilage organisms as well as food-borne pathogens including Escherichia coli. Heat resistance in E. coli was attributed to a genomic island called the locus of heat resistance (LHR). This genomic island is also present in several other genera of Enterobacteriaceae, but its function in the enteric pathogens Salmonella enterica and Enterobacter cloacae is unknown. This study aimed to determine the frequency of the LHR in food isolates of E. coli, and its influence on heat resistance in S...
June 2017: Food Microbiology
https://www.readbyqxmd.com/read/28212895/the-influence-of-enteral-obestatin-administration-to-suckling-rats-on-intestinal-contractility
#11
M Słupecka, P Grzesiak, J Kwiatkowski, M Gajewska, A Kuwahara, I Kato, J Woliński
This study investigated the effect of enteral administration of obestatin on the contractility of whole-thickness preparations of duodenum and middle jejunum, as well as on the morphology of the enteric nervous system (ENS). Suckling rats were assigned to 3 groups (n=12) treated with: C- saline solution; LO- obestatin (125 nmol/kg b.wt); HO-obestatin (250 nmol/kg b.wt). Saline solution or obestatin were administered twice daily, from the 14(th) to the 21(st) day of life. Sections were studied in an organ bath, for isometric recording in the presence of acetylocholine (ACh), atropine (ATR) and tetradotoxin (TTX)...
February 14, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28209473/analysis-of-peripheral-t-cell-lymphoma-diagnostic-workup-in-the-united-states
#12
Eric D Hsi, Steven M Horwitz, Kenneth R Carson, Lauren C Pinter-Brown, Steven T Rosen, Barbara Pro, Massimo Federico, Christian Gisselbrecht, Marc Schwartz, Lisa A Bellm, Mark Acosta, Angela M Collie, Aaron M Gruver, Bartosz J Grzywacz, Samir Turakhia, Andrei R Shustov, Ranjana H Advani, Tatyana Feldman, Mary Jo Lechowicz, Sonali M Smith, Frederick Lansigan, Anil Tulpule, Michael D Craig, John P Greer, Brad S Kahl, Joseph W Leach, Neil Morganstein, Carla Casulo, Steven I Park, Francine M Foss
BACKGROUND: With increased understanding of the unique entities, subtype-specific approaches for peripheral T-cell lymphoma (PTCL) are emerging, and more precise diagnoses are becoming increasingly important. PATIENTS AND METHODS: We analyzed the approach to the histopathologic diagnosis of PTCL using data from the comprehensive oncology measures of peripheral T-cell lymphoma (COMPLETE) study. The COMPLETE trial is a large prospective cohort study of patients with newly diagnosed PTCL in the United States...
January 10, 2017: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/28208612/enteric-pathogens-and-their-toxin-induced-disruption-of-the-intestinal-barrier-through-alteration-of-tight-junctions-in-chickens
#13
REVIEW
Wageha A Awad, Claudia Hess, Michael Hess
Maintaining a healthy gut environment is a prerequisite for sustainable animal production. The gut plays a key role in the digestion and absorption of nutrients and constitutes an initial organ exposed to external factors influencing bird's health. The intestinal epithelial barrier serves as the first line of defense between the host and the luminal environment. It consists of a continuous monolayer of intestinal epithelial cells connected by intercellular junctional complexes which shrink the space between adjacent cells...
February 10, 2017: Toxins
https://www.readbyqxmd.com/read/28198769/imaging-leukocyte-responses-in-the-kidney
#14
Michaela Finsterbusch, A Richard Kitching, Michael J Hickey
The kidney can be negatively affected by a range of innate and adaptive immune responses, resulting in alterations in the functions of the kidney and, in some cases, progression to renal failure. In many of these responses, infiltration of blood-borne leukocytes into the kidney is central to the response. In addition, a large population of mononuclear phagocytes resident in the kidney can modulate these responses. A great deal of research has investigated both the mechanisms of leukocyte recruitment to the kidney and the actions of immune cells resident within the kidney...
March 2017: Transplantation
https://www.readbyqxmd.com/read/28193078/analysis-of-the-distribution-pattern-of-chromium-species-in-single-cells
#15
Xing Wei, Lin-Lin Hu, Ming-Li Chen, Ting Yang, Jian-Hua Wang
The patterning of distribution models for specific heavy metal species in biological cells is highly important for elucidating their effect on single cells or in a living organism. For this purpose, the variation of chromium levels and the distribution patterns of chromium species in single-cell subjects are investigated by culturing two kinds of native cells (i.e., HeLa cells and MCF-7 cells) in the presence of either Cr(III) or Cr(VI). The analysis of single cells is performed with time-resolved inductively coupled plasma mass spectrometry...
December 20, 2016: Analytical Chemistry
https://www.readbyqxmd.com/read/28192556/changes-in-postacute-care-in-the-medicare-shared-savings-program
#16
J Michael McWilliams, Lauren G Gilstrap, David G Stevenson, Michael E Chernew, Haiden A Huskamp, David C Grabowski
Importance: Postacute care is thought to be a major source of wasteful spending. The extent to which accountable care organizations (ACOs) can limit postacute care spending has implications for the importance and design of other payment models that include postacute care. Objective: To assess changes in postacute care spending and use of postacute care associated with provider participation as ACOs in the Medicare Shared Savings Program (MSSP) and the pathways by which they occurred...
February 13, 2017: JAMA Internal Medicine
https://www.readbyqxmd.com/read/28191783/concise-review-the-potential-use-of-intestinal-stem-cells-to-treat-patients-with-intestinal-failure
#17
Sung Noh Hong, James C Y Dunn, Matthias Stelzner, Martín G Martín
Intestinal failure is a rare life-threatening condition that results in the inability to maintain normal growth and hydration status by enteral nutrition alone. Although parenteral nutrition and whole organ allogeneic transplantation have improved the survival of these patients, current therapies are associated with a high risk for morbidity and mortality. Development of methods to propagate adult human intestinal stem cells (ISCs) and pluripotent stem cells raises the possibility of using stem cell-based therapy for patients with monogenic and polygenic forms of intestinal failure...
February 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28187935/effect-of-bacteria-on-the-degradation-ability-of-pleurotus-ostreatus
#18
Hana Válková, Čeněk Novotný, Kateřina Malachová, Pavlína Šlosarčíková, Jindřich Fojtík
White-rot fungi are efficient degraders of lignin whose extracellular enzymes have a potential to degrade organopollutants. In natural conditions these fungi enter into interactions with other organisms, which may affect their biodegradation capacity. The aim was to investigate the ability of Pleurotus ostreatus to form stable biofilms and to test the capacity of the fungus to degrade Remazol Brilliant Blue R in mixed cultures with bacteria. Bacterial counts were determined to see the behavior of the bacterium in the mixed culture with the fungus...
February 7, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28187729/use-of-electronic-medical-records-and-quality-of-patient-data-different-reaction-patterns-of-doctors-and-nurses-to-the-hospital-organization
#19
Mattijs S Lambooij, Hanneke W Drewes, Ferry Koster
BACKGROUND: As the implementation of Electronic Medical Records (EMRs) in hospitals may be challenged by different responses of different user groups, this paper examines the differences between doctors and nurses in their response to the implementation and use of EMRs in their hospital and how this affects the perceived quality of the data in EMRs. METHODS: Questionnaire data of 402 doctors and 512 nurses who had experience with the implementation and the use of EMRs in hospitals was analysed with Multi group Structural equation modelling (SEM)...
February 10, 2017: BMC Medical Informatics and Decision Making
https://www.readbyqxmd.com/read/28187135/pathogen-cross-transmission-via-building-sanitary-plumbing-systems-in-a-full-scale-pilot-test-rig
#20
Michael Gormley, Thomas J Aspray, David A Kelly, Cristina Rodriguez-Gil
The WHO Consensus Document on the epidemiology of the SARS epidemic in 2003, included a report on a concentrated outbreak in one Hong Kong housing block which was considered a 'super-spreading event'. The WHO report conjectured that the sanitary plumbing system was one transmission route for the virus. Empty U-traps allowed the aerosolised virus to enter households from the sewerage system. No biological evidence was presented. This research reports evidence that pathogens can be aerosolised and transported on airstreams within sanitary plumbing systems and enter buildings via empty U-traps...
2017: PloS One
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