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https://www.readbyqxmd.com/read/29353442/flexible-pseudotyping-of-retrovirus-using-recombinase-mediated-cassette-exchange
#1
Hugo R Soares, Ana I Almeida, Hélio A Tomás, Paula M Alves, Ana S Coroadinha
OBJECTIVE: Develop an engineered cell line containing two flexible gene expression systems enabling the continuous production of tailor-made recombinant gammaretrovirus with predictable productivities through targeted integration. RESULTS: Dual-FLEX cells (dFLEX) contain two independent recombinase-mediated cassette exchange (RMCE) systems which confer flexibility to the expression of different transgene and envelope combinations. The flexible envelope expression in dFLEX cells was validated by pseudotyping retrovirus particles with three different viral envelope proteins-GaLV, 4070A and VSV-G...
January 20, 2018: Biotechnology Letters
https://www.readbyqxmd.com/read/29353439/transgenesis-by-microparticle-bombardment-for-live-imaging-of-fluorescent-proteins-in-pristionchus-pacificus-germline-and-early-embryos
#2
Satoshi Namai, Asako Sugimoto
Pristionchus pacificus is a free-living nematode used as a model organism for evolutionary developmental and ecological biology. Although a transgenic technique to form complex arrays by microinjection has been established in P. pacificus, transgene expression from the array in the germline and early embryos tends to be silenced. Here, we established a method to integrate transgenes into the genome of P. pacificus using microparticle bombardment with hygromycin B selection. Additionally, we isolated a mutant exhibiting significantly lower autofluorescence in the germline and early embryos, facilitating visualization of transgene-derived fluorescent proteins for live imaging...
January 20, 2018: Development Genes and Evolution
https://www.readbyqxmd.com/read/29353361/liming-induces-carbon-dioxide-co2-emission-in-psb-inoculated-alkaline-soil-supplemented-with-different-phosphorus-sources
#3
Muhammad Adnan, Zahir Shah, Muhammad Sharif, Hidayatur Rahman
Agricultural land is a major sink of global organic carbon (C). Its suitable management is crucial for improving C sequestration and reducing soil CO2 emission. Incubation experiments were performed to assess the impact of phosphate solubilizing bacterial (PSB) inoculation (inoculated and uninoculated) and soil calcification (4.78, 10, 15, and 20% crushed CaCO3) with phosphorus (P) sources [single superphosphate (SSP), rock phosphate (RP), farm yard manure (FYM), and poultry manure (PM)] in experiment 1 and with various rates of PM (4, 8, and 12 kg ha-1) in experiment 2 on cumulative soil respiration...
January 20, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29353197/bioanalytical-assessment-of-adaptive-stress-responses-in-drinking-water-a-predictive-tool-to-differentiate-between-micropollutants-and-disinfection-by-products
#4
Armelle Hebert, Cedric Feliers, Caroline Lecarpentier, Peta A Neale, Rita Schlichting, Sylvie Thibert, Beate I Escher
Drinking water can contain low levels of micropollutants, as well as disinfection by-products (DBPs) that form from the reaction of disinfectants with organic and inorganic matter in water. Due to the complex mixture of trace chemicals in drinking water, targeted chemical analysis alone is not sufficient for monitoring. The current study aimed to apply in vitro bioassays indicative of adaptive stress responses to monitor the toxicological profiles and the formation of DBPs in three drinking water distribution systems in France...
January 3, 2018: Water Research
https://www.readbyqxmd.com/read/29353169/integrated-biomarkers-response-confirm-the-antioxidant-role-of-diphenyl-diselenide-against-atrazine
#5
Aline Teixeira Marins, Cíntia Côrte Real Rodrigues, Charlene Cavalheiro de Menezes, Jeane de Lima Costa Gomes, Maiara Dorneles Costa, Mauro Eugênio Medina Nunes, Mariela de Souza Vieira, Filipe Fagan Donato, Renato Zanella, Leila Picolli da Silva, Vania Lucia Loro
Atrazine (ATZ) is a herbicide worldwide used. That can cause oxidative damage in non-target organisms, such as fish. Furthermore, the threat of exposure to pesticides together with poor nutrition is hazardous to the normal development of fish, and supplementation of the fish diet with antioxidants compounds is an alternative approach to prevent the hazardous effects of pesticide exposure. Here we aimed to investigate the capacity of diphenyl diselenide (PhSe)2 diet supplementation to improve the antioxidant defense of Cyprinus carpio (carp) exposed to environmental concentrations of ATZ...
January 16, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29353128/adoption-penetration-and-effectiveness-of-a-secondary-risk-screener-for-intimate-partner-violence-evidence-to-inform-screening-practices-in-integrated-care-settings
#6
Katherine M Iverson, Anneliese E Sorrentino, Scarlett L Bellamy, Alessandra R Grillo, Terri N Haywood, Elina Medvedeva, Christopher B Roberts, Melissa E Dichter
OBJECTIVE: Veterans Health Administration (VHA) has implemented screening for past-year intimate partner violence (IPV) in some healthcare facilities along with secondary screening of risk for severe violence among those screening positive in order to facilitate follow-up care for high-risk patients. We evaluated the adoption, penetration, and effectiveness of secondary screening as a tool to facilitate timely follow-up services. METHODS: Retrospective review of medical records (screening and healthcare use) of 774 women screening positive for past-year IPV (IPV+) at 11 facilities nationwide from April 2014-April 2016...
January 10, 2018: General Hospital Psychiatry
https://www.readbyqxmd.com/read/29353114/toxic-hazards-of-ammonia-release-and-population-vulnerability-assessment-using-geographical-information-system
#7
N S Anjana, A Amarnath, M V Harindranathan Nair
Today, chemical industries manufacture, store and transport evermore hazardous substances and hence the risk of accidental releases of these chemicals can become more and more catastrophic in the context of increasing population and their requirements. The damage potential is proportional to the population characteristics of the location as well as various meteorological factors and geographical features. For the risk assessment of ammonia toxicity, the storage facility at Eloor industrial area is taken as a sample...
January 15, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29353105/biomimetic-and-enzyme-responsive-dynamic-hydrogels-for-studying-cell-matrix-interactions-in-pancreatic-ductal-adenocarcinoma
#8
Hung-Yi Liu, Murray Korc, Chien-Chi Lin
The tumor microenvironment (TME) governs all aspects of cancer progression and in vitro 3D cell culture platforms are increasingly developed to emulate the interactions between components of the stromal tissues and cancer cells. However, conventional cell culture platforms are inadequate in recapitulating the TME, which has complex compositions and dynamically changing matrix mechanics. In this study, we developed a dynamic gelatin-hyaluronic acid hybrid hydrogel system through integrating modular thiol-norbornene photopolymerization and enzyme-triggered on-demand matrix stiffening...
January 8, 2018: Biomaterials
https://www.readbyqxmd.com/read/29353099/cardiovascular-involvement-in-systemic-rheumatic-diseases-an-integrated-view-for-the-treating-physicians
#9
REVIEW
Kwang Seob Lee, Andreas Kronbichler, Michael Eisenhut, Keum Hwa Lee, Jae Il Shin
Systemic autoimmune diseases can affect various kinds of organs including the kidney, the skin, soft tissue and the bone. Among others, cardiovascular involvement in rheumatic diseases has been shown to affect myocardium, pericardium, cardiac vessels, conduction system and valves, eventually leading to mortality. In general, underlying chronic inflammation lead to premature atherosclerosis, but also other manifestations such as arrhythmia and heart failure may have a 'silent' progress. Traditional cardiovascular risk factors play a secondary role, while disease-specific factors (i...
January 15, 2018: Autoimmunity Reviews
https://www.readbyqxmd.com/read/29353095/integration-of-visual-feedback-and-motor-learning-corticospinal-vs-corticobulbar-pathway
#10
Seoung Hoon Park, Agostina Casamento-Moran, Michele L Singer, Alayna E Ernster, Basma Yacoubi, Ianessa A Humbert, Evangelos A Christou
Although movement is controlled by different descending pathways, it remains unknown whether the integration of visual feedback and motor learning differs for movements controlled by different descending pathways. Here, we compare motor control and learning of the ankle joint and tongue because they are primarily controlled by the corticospinal and corticobulbar pathways, respectively. Twelve young adults (19.63 ± 2.11 years, 6 females) practiced a tracking task (combination of 0.02, 0.37, 0.5, and 1 Hz) with ankle dorsiflexion and with tongue elevation for 100 trials...
January 17, 2018: Human Movement Science
https://www.readbyqxmd.com/read/29353012/fabrication-of-poly-ethylene-glycol-coated-mesoporous-nanocomposite-zno-fe2o3-for-methotrexate-delivery-an-integrated-nanoplatform-for-dual-mode-cancer-therapy
#11
Azam S Alavi, Azadeh Meshkini
Although chemotherapy is an effective strategy for treatment of tumor cells, the non-specific distribution of chemotherapy drugs and their poor aqueous solubility result in impaired treatment and cause serious side effects in patients. In this study, mesoporous ZnO@Fe2O3 nanocomposite was fabricated and used as a platform for drug delivery. ZnO@Fe2O3 nanocomposite showed a high capacity for the adsorption of chemotherapy drug, methotrexate (MTX). Drug-loaded nanoparticle was coated with poly(ethylene glycol) (PEG), leading to the enhanced colloidal stability and good cytocompatibility...
January 15, 2018: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29352997/microglia-and-neonatal-brain-injury
#12
Carina Mallard, Marie-Eve Tremblay, Zinaida S Vexler
Microglial cells are now recognized as the "gate-keepers" of healthy brain microenvironment with their disrupted functions adversely affecting neurovascular integrity, neuronal homeostasis, and network connectivity. The perception that these cells are purely toxic under neurodegenerative conditions has been challenged by a continuously-increasing understanding of their complexity, the existence of a broad array of microglial phenotypes, and their ability to rapidly change in a context-dependent manner to attenuate or exacerbate injuries of different nature...
January 15, 2018: Neuroscience
https://www.readbyqxmd.com/read/29352979/evaluation-of-sheep-ovarian-tissue-cryopreserved-by-slow-freezing-or-vitrificaton-after-chick-embryo-chorioallantoic-membrane-transplantation
#13
Mahboubeh Vatanparast, Mohammad Ali Khalili, Nahid Yari, Marjan Omidi, Mehdi Mohsenzadeh
The aim of our investigations was to compare the effectiveness of two methods for cryopreservation of sheep ovarian tissue, slow freezing and vitrification. The quality of cryopreserved tissues was evaluated after 5 days of thawing and chorioallantoic membrane (CAM) transplantation. Follicular structure, stromal integrity and neovascularization were assessed. The areas of fibrosis and necrosis were measured using MICROVISIBLE software, and proliferation was assessed with Ki-67 immunostaning. After 5 days of culture, the proportion of primordial follicles decreased, whereas the primary and intermediary follicles increased insignificantly (p > ...
January 15, 2018: Cryobiology
https://www.readbyqxmd.com/read/29352976/anterior-segment-imaging-for-angle-closure
#14
Sunee Chansangpetch, Prin Rojanapongpun, Shan C Lin
PURPOSE: To summarize the role of anterior segment imaging (AS-imaging) in angle closure diagnosis and management, and the possible advantages over the current standard of gonioscopy. DESIGN: Literature review and perspective. METHODS: Review of the pertinent publications with interpretation and perspective in relation to the use of AS-imaging in angle closure assessment focusing on anterior segment optical coherence tomography and ultrasound biomicroscopy...
January 15, 2018: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29352964/c24-hydroxylated-stigmastane-derivatives-as-liver-x-receptor-agonists
#15
Francisco Fermin Castro Navas, Gianluca Giorgi, Daniela Maggioni, Manuela Pacciarini, Vincenzo Russo, Maura Marinozzi
Phytosterols are stucturally correlated to the endogenous ligands of Liver X Receptor (LXR), a ligand-activated nuclear receptor that has emerged as an attractive drug target due to its ability to integrate metabolic and inflammatory signaling. Natural and semi-synthetic phytosterol derivatives characterized by the presence of side-chain oxygenated functions have shown to be able to modulate LXR activity. Here, we describe the efficient synthesis of four stigmastane derivatives, endowed with a hydroxyl group at C24 position, namely (24R)- and (24S)-stigmasta-5,28-diene-3β,24-ols (also referred to as saringosterols, 10a and 10b) and (24R)- and (24S)-stigmasta-5-ene-3β,24-ols (11a and 11b), starting from the readily available stigmasterol...
January 15, 2018: Chemistry and Physics of Lipids
https://www.readbyqxmd.com/read/29352888/production-of-cellulose-nanoparticles-from-blue-agave-waste-treated-with-environmentally-friendly-processes
#16
Eduardo Robles, Javier Fernández-Rodríguez, Ananda M Barbosa, Oihana Gordobil, Neftali L V Carreño, Jalel Labidi
Tequila elaboration leaves two main byproducts that are undervalued (bagasse and leaves). Organosolv pulping and Total Chlorine Free bleaching were integrated to obtain cellulose fibers from agricultural waste which consisted of blue agave bagasse and leaf fibers; together they represent a green process which valorizes biomass waste. The obtained celluloses were characterized by FT-IR, colorimetry, and SEM and their extraction yields were evaluated. These celluloses were used to produce cellulose nanocrystals and cellulose nanofibers...
March 1, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29352862/integrated-care-and-the-challenge-of-chronic-illness
#17
Joan Carles Contel
No abstract text is available yet for this article.
January 2018: Enfermería Clínica
https://www.readbyqxmd.com/read/29352836/implementation-of-the-integrated-palliative-care-outcome-scale-in-acute-care-settings-a-feasibility-study
#18
Susanne Lind, J Sandberg, T Brytting, C J Fürst, L Wallin
OBJECTIVE: Although hospitals have been described as inadequate place for end-of-life care, many deaths still occur in hospital settings. Although patient-reported outcome measures have shown positive effects for patients in need of palliative care, little is known about how to implement them. We aimed to explore the feasibility of a pilot version of an implementation strategy for the Integrated Palliative care Outcome Scale (IPOS) in acute care settings. METHOD: A strategy, including information, training, and facilitation to support the use of IPOS, was developed and carried out at three acute care units...
January 21, 2018: Palliative & Supportive Care
https://www.readbyqxmd.com/read/29352830/schistosoma-mansoni-and-endocarditis-from-egg-to-free-dna-detection-in-egyptian-patients-and-infected-balb-c-mice
#19
M A Hasby Saad, M M Watany
With the growing incidence of closed schistosomiasis and uncommon presentations, there is a risk of the infection rate being underestimated. A study in Japan reported an unexplained case of endocarditis that was finally diagnosed as a complex Schistosoma japonicum infection; in the absence of advanced techniques, the diagnosis was delayed. We therefore set out to explore the incidence of Schistosoma mansoni in endocarditis patients coming from areas of Egypt where S. mansoni is endemic. We also investigated histopathological changes in the cardiac valves and the presence of cell-free parasite DNA (CFPD) in cardiac tissues of laboratory mice infected with S...
January 21, 2018: Journal of Helminthology
https://www.readbyqxmd.com/read/29352826/the-in-vitro-antileishmanial-activity-of-essential-oil-from-aloysia-gratissima-and-guaiol-its-major-sesquiterpene-against-leishmania-amazonensis
#20
Maria Carolina Freitas Garcia, Deivid Costa Soares, Raissa Couto Santana, Elvira Maria Saraiva, Antonio Carlos Siani, Mônica Freiman S Ramos, Maria das Graças Miranda Danelli, Thaïs Cristina Souto-Padron, Lucia H Pinto-da-Silva
Leishmaniases is a tropical disease caused by protozoa of the genus Leishmania for which the current treatment is expensive, besides increasing reports of parasite resistance. This study investigated the anti-Leishmania amazonensis activity of the essential oil from Aloysia gratissima (AgEO) and guaiol, the major sesquiterpene constituent in the oil. Our results showed that AgEO killed promastigotes and intracellular amastigotes at an IC50 of 25 and 0·16 µg mL-1, respectively, while guaiol killed amastigotes at an IC50 of 0·01 µg mL-1...
January 21, 2018: Parasitology
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