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https://www.readbyqxmd.com/read/28330298/biodegradation-of-used-engine-oil-by-novel-strains-of-ochrobactrum-anthropi-hm-1-and-citrobacter-freundii-hm-2-isolated-from-oil-contaminated-soil
#1
Haytham M M Ibrahim
Used engine oil (UEO) constitutes a serious environmental problem due to the difficulty of disposal off or reuse. Ten bacterial strains with biodegradation potential were isolated from UEO-contaminated soil sample using enrichment technique. Two strains which exhibited the highest degradation %, 51 ± 1.2 and 48 ± 1.5, respectively, were selected. Based on the morphological, biochemical characteristics and 16S rRNA sequence analysis, they were identified as Ochrobactrum anthropi HM-1 (accession no: KR360745) and Citrobacter freundii HM-2 (accession no: KR360746)...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330182/efficient-single-step-chromatographic-purification-of-recombinant-human-antithrombin-rhat-from-saccharomyces-cerevisiae
#2
Maheswara Reddy Mallu, Sandeep Vemula, Srinivasa Reddy Ronda
Antithrombin (AT) is a glycoprotein that inactivates the several physiological target enzymes of coagulation system. The effect of purification strategies plays a crucial role in getting maximum recovery of yield, purity and biological activity of recombinant human antithrombin (rhAT). In the present work, the task of purifying rhAT from Saccharomyces cerevisiae BY4741 has been carried out using two different approaches such as cross flow filtration (CFF) system and chromatography methods. In the first approach, the protein was concentrated and partially purified through CFF to achieve maximum recovery yield and purity of 87 and 94 %, respectively...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330127/diversity-of-toxic-and-phytopathogenic-fusarium-species-occurring-on-cereals-grown-in-karnataka-state-india
#3
H Nagaraja, G Chennappa, K Poorna Chandra Rao, G Mahadev Prasad, M Y Sreenivasa
A total of 198 cereal samples (53 maize, 54 sorghum, 37 paddy and 54 wheat) were collected from 11 districts of Karnataka to understand the percent infection (PI), relative density (RD) and their frequency (Fr) caused by Fusarium spp. All samples were screened by agar plating method using MGA 2.5 agar media and incubated at 25 ± 2 °C for 3-5 days. The study revealed the association of 10 different Fusarium species known trichothecene producers such as Fusarium acuminatum, F. avenaceum, F. crookwellense, F...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330015/contact-aspiration-versus-stent-retriever-front-line-for-recanalisation-in-acute-cerebral-infarction-the-aster-trial
#4
Bertrand Lapergue, Julien Labreuche, Michel Piotin
RATIONALE: Mechanical thrombectomy (MT) with a stent retriever (SR), in association with intravenous (IV) rtPA, is now the standard of care in anterior circulation ischemic stroke caused by large vessel occlusion (LVO). Favorable outcome is strongly associated with the successful reperfusion status. New techniques for MT such as contact aspiration (CA) seem promising to increase reperfusion status and clinical outcome in retrospective studies. We aim at ascertaining whether CA is more efficient than stent retriever as a front-line endovascular procedure...
March 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28329836/convoys-of-social-relations-in-cross-national-context
#5
Kristine J Ajrouch, Heather R Fuller, Hiroko Akiyama, Toni C Antonucci
Purpose of the Study: This study examines national variations in social networks among older adults across 4 countries in diverse regions of the world: Japan, Lebanon, Mexico, and the United States. The aim is to provide insights into universal as well as unique attributes of social networks in later life. Design and Methods: The analyses examine convoy characteristics among adults aged 50+ in metropolitan areas of Japan (N = 557), Lebanon (N = 284), Mexico (N = 556), and the United States (N = 583)...
January 19, 2017: Gerontologist
https://www.readbyqxmd.com/read/28329827/the-influence-of-the-physical-envirnment-on-residents-with-dementia-in-long-term-care-settings-a-review-of-the-empirical-literature
#6
Habib Chaudhury, Heather A Cooke, Heather Cowie, Leila Razaghi
Background and Objectives: The physical environment in long-term care facilities has an important role in the care of residents with dementia. This paper presents a literature review focusing on recent empirical research in this area and situates the research with therapeutic goals related to the physical environment. Research Design and Methods: A comprehensive literature search was conducted in Ageline, PsychINFO, CINAHL, Medline and Google Scholar databases to identify relevant articles...
March 10, 2017: Gerontologist
https://www.readbyqxmd.com/read/28329792/types-of-non-kin-networks-and-their-association-with-survival-in-late-adulthood-a-latent-class-approach
#7
Lea Ellwardt, Marja Aartsen, Theo van Tilburg
Objectives: Integration into social networks is an important determinant of health and survival in late adulthood. We first identify different types of non-kin networks among older adults and second, investigate the association of these types with survival rates. Method: Official register information on mortality is combined with data from the Longitudinal Aging Study Amsterdam (LASA). The sample includes 2,440 Dutch respondents aged 54-85 at baseline in 1992 and six follow-ups covering a time span of 20 years...
October 17, 2016: Journals of Gerontology. Series B, Psychological Sciences and Social Sciences
https://www.readbyqxmd.com/read/28329784/age-related-increases-in-verbal-knowledge-are-not-associated-with-word-finding-problems-in-the-cam-can-cohort-what-you-know-won-t-hurt-you
#8
Meredith A Shafto, Lori E James, Lise Abrams, Lorraine K Tyler
Objective: We tested the claim that age-related increases in knowledge interfere with word retrieval, leading to word finding failures. We did this by relating a measure of crystallized intelligence to tip-of-the-tongue (TOT) states and picture naming accuracy. Method: Participants were from a large (N = 708), cross-sectional (aged 18-88 years), population-based sample from the Cambridge Centre for Ageing and Neuroscience cohort (Cam-CAN; www.cam-can.com). They completed (a) the Spot-the-Word Test (STW), a measure of crystallized intelligence in which participants circled the real word in word/nonword pairs, (b) a TOT-inducing task, and (c) a picture naming task...
June 30, 2016: Journals of Gerontology. Series B, Psychological Sciences and Social Sciences
https://www.readbyqxmd.com/read/28329642/effect-of-antibiotic-exposure-on-stevens-johnson-syndrome-sjs-and-toxic-epidermal-necrolysis-ten
#9
Katherine J Sullivan, Robert J Valuck, Meghan N Jeffres, Heather D Anderson
BackgroundAntibiotics are commonly implicated in Stevens-Johnson syndrome (SJS), overlap syndrome (SJS-TEN), and Toxic Epidermal Necrolysis (TEN), rare disorders of skin and mucosal membranes, often the result of adverse drug reactions. The objective of this study is to examine associations between SJS, SJS-TEN, and TEN and antibiotic exposure overlapping diagnosis, and 3, 6, and 12 months before diagnosis.MethodsA case-control study was conducted using PharMetrics LifeLink® Health Plan Claims Database (2001-2013)...
September 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329397/resveratrol-improves-vascular-function-and-mitochondrial-number-but-not-glucose-metabolism-in-older-adults
#10
Rena M Pollack, Nir Barzilai, Valentin Anghel, Ameya S Kulkarni, Aaron Golden, Pilib O'Broin, David A Sinclair, Michael S Bonkowski, Alexander J Coleville, Danielle Powell, Sharon Kim, Ruin Moaddel, Daniel Stein, Kehao Zhang, Meredith Hawkins, Jill P Crandall
Background: Resveratrol, a plant-derived polyphenol, has been reported to improve glucose metabolism and vascular function and to extend life span in animal models, but studies in humans have been inconclusive. Methods: In a randomized, double-blind crossover study, we treated older glucose-intolerant adults (n = 30) with resveratrol (2-3 g/daily) or placebo, each for 6 weeks. A standard mixed-meal test was used to assess insulin sensitivity (Matsuda index) and secretion (C-peptide deconvolution) and vascular function by reactive hyperemia peripheral arterial tonometry...
March 16, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28329030/protective-factors-in-the-intestinal-microbiome-against-clostridium-difficile-infection-in-recipients-of-allogeneic-hematopoietic-stem-cell-transplantation
#11
Yeon Joo Lee, Esther P Arguello, Robert R Jenq, Eric Littmann, Grace J Kim, Liza C Miller, Lilan Ling, Cesar Figueroa, Elizabeth Robilotti, Miguel-Angel Perales, Juliet N Barker, Sergio Giralt, Marcel R M van den Brink, Eric G Pamer, Ying Taur
Background.: Clostridium difficile infection (CDI) is a frequent complication in recipients of allogeneic hematopoietic stem cell transplantation (allo-HSCT), who receive intensive treatments that significantly disrupt the intestinal microbiota. In this study, we examined the microbiota composition of allo-HSCT recipients to identify bacterial colonizers that confer protection against CDI following engraftment. Methods.: Feces collected from adult recipients allo-HSCT at engraftment were analyzed; 16S rRNA genes were sequenced and analyzed from each sample...
January 30, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28329003/effects-of-research-complexity-and-competition-on-the-incidence-and-growth-of-coauthorship-in-biomedicine
#12
Jason Cory Brunson, Xiaoyan Wang, Reinhard C Laubenbacher
BACKGROUND: Investigations into the factors behind coauthorship growth in biomedical research have mostly focused on specific disciplines or journals, and have rarely controlled for factors in combination or considered changes in their effects over time. Observers often attribute the growth to the increasing complexity or competition (or both) of research practices, but few attempts have been made to parse the contributions of these two likely causes. OBJECTIVES: We aimed to assess the effects of complexity and competition on the incidence and growth of coauthorship, using a sample of the biomedical literature spanning multiple journals and disciplines...
2017: PloS One
https://www.readbyqxmd.com/read/28328995/effectiveness-of-interceptive-treatment-of-class-iii-malocclusions-with-skeletal-anchorage-a-systematic-review-and-meta-analysis
#13
Jorge Rodríguez de Guzmán-Barrera, Carla Sáez Martínez, Montserrat Boronat-Catalá, Jose María Montiel-Company, Vanessa Paredes-Gallardo, José Luís Gandía-Franco, José Manuel Almerich-Silla, Carlos Bellot-Arcís
Recently, new strategies for treating class III malocclusions have appeared. Skeletal anchorage appears to reduce the dentoalveolar effects while maximising the orthopaedic effect in growing patients. The purpose of this systematic review and meta-analysis is to examine the effectiveness of bone anchorage devices for interceptive treatment of skeletal class III malocclusions. Searches were made in the Pubmed, Embase, Scopus and Cochrane databases, as well as in a grey literature database, and were complemented by hand-searching...
2017: PloS One
https://www.readbyqxmd.com/read/28328984/using-simulation-to-aid-trial-design-ring-vaccination-trials
#14
Matt David Thomas Hitchings, Rebecca Freeman Grais, Marc Lipsitch
BACKGROUND: The 2014-6 West African Ebola epidemic highlights the need for rigorous, rapid clinical trial methods for vaccines. A challenge for trial design is making sample size calculations based on incidence within the trial, total vaccine effect, and intracluster correlation, when these parameters are uncertain in the presence of indirect effects of vaccination. METHODS AND FINDINGS: We present a stochastic, compartmental model for a ring vaccination trial. After identification of an index case, a ring of contacts is recruited and either vaccinated immediately or after 21 days...
March 22, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28328557/lateral-rectus-muscle-expands-more-than-medial-rectus-following-maximal-deep-balanced-orbital-decompression
#15
Adit Gupta, Alex Nobori, Yi Wang, Daniel Rootman, Robert Goldberg
PURPOSE: It has been reported that extraocular muscles can enlarge following orbital decompression in thyroid eye disease. In this article, the authors studied the changes in extraocular muscles size following maximal deep lateral and medial balanced decompression in a large sample of thyroid eye disease patients. METHODS: Imaging data were reviewed preoperatively and postoperatively. Radiologic proptosis was assessed. Maximal axial muscle width of the medial and lateral recti was measured...
March 21, 2017: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28328550/injection-drug-network-characteristics-are-important-markers-of-hiv-risk-behavior-and-lack-of-viral-suppression
#16
Javier A Cepeda, Sunil S Solomon, Aylur K Srikrishnan, Allison M McFall, M Suresh Kumar, Canjeevaram K Vasudevan, Santhanam Anand, David D Celentano, Gregory M Lucas, Shruti H Mehta
BACKGROUND: People who inject drugs (PWID) who are highly connected within their injection drug networks may be important HIV transmission nodes if they frequently share syringes with other PWID and are not engaged in HIV care. In India, HIV transmission fueled by injection drug use is increasing, however little is known about the associations between injection network size and syringe sharing and viral suppression. METHODS: We recruited 14,481 PWID between October 2012 - December 2013 by respondent driven sampling across 15 sites in India...
March 20, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28328539/polarization-sensitive-localization-based-super-resolution-microscopy-with-a-birefringent-wedge
#17
József Sinkó, Tamás Gajdos, Elvira Czvik, Gábor Szabó, Miklós Erdélyi
A practical method has been presented for polarization sensitive localization based super-resolution microscopy using a birefringent dual wedge. The measurement of the polarization degree at the single molecule level can reveal the chemical and physical properties of the local environment of the fluorescent dye molecule and can hence provide information about the sub-diffraction sized structure of biological samples. Polarization sensitive STORM imaging of the F-Actins proved correlation between the orientation of fluorescent dipoles and the axis of the fibril...
March 22, 2017: Methods and Applications in Fluorescence
https://www.readbyqxmd.com/read/28328251/predicting-presidential-election-outcomes-from-what-people-watch
#18
Arash Barfar, Balaji Padmanabhan
In a recent article by Barfar and Padmanabhan (2015), we demonstrated how television viewership data could predict presidential election outcomes in the United States. In this article, we examine predictive models using a snapshot of Nielsen's national data on television viewership. The study is conducted with high-dimensional low sample size (HDLSS) data, whereby we conduct a comparative analysis with and without feature reduction on the data from the 2012 elections. We find that simple "single-show models" often provided more insights and predictive accuracies than models from feature reduction...
March 2017: Big Data
https://www.readbyqxmd.com/read/28328147/effect-of-needle-diameter-on-the-viability-of-equine-bone-marrow-derived-mesenchymal-stem-cells
#19
Hayley M Lang, Lauren V Schnabel, Jennifer M Cassano, Lisa A Fortier
OBJECTIVES: Mesenchymal stem cells (MSCs) are frequently delivered via needle injection for treatment of musculoskeletal injuries. The purpose of this study was to evaluate the effect of needle diameter on the viability of MSCs. METHODS: Equine bone marrow-derived MSCs from 5 horses were suspended in PBS, and held at room temperature for 7 hours to mimic shipping conditions. Two replicate samples for each needle size (20, 22, 23, or 25-gauge [ga]) were aspirated into a 3 mL syringe and re-injected into the holding vial 3 times, to reproduce the resuspension of cells prior to injection in clinical cases...
March 22, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28328142/enhanced-spatial-resolution-in-vector-potential-photoelectron-microscopy
#20
R Browning
The spatial resolution of the vector potential photoelectron microscope is determined by the maximum size of the cyclotron orbits of the imaged electrons at the surface of a sample. It is straightforward to calculate the spatial resolution for any imaged electron energy given the magnetic field strength. However, in low-energy secondary photoelectron images from an aluminium-calcium metal matrix alloy, we find the apparent spatial resolution is significantly higher than expected. A possible explanation for the enhanced resolution is that the low-energy cyclotron orbits are distorted when passing from one area of work function to another and the image is dependent on the surface field distribution...
March 22, 2017: Journal of Microscopy
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