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https://www.readbyqxmd.com/read/28110506/antibiotic-discovery-throughout-the-small-world-initiative-a-molecular-strategy-to-identify-biosynthetic-gene-clusters-involved-in-antagonistic-activity
#1
Elizabeth Davis, Tyler Sloan, Krista Aurelius, Angela Barbour, Elijah Bodey, Brigette Clark, Celeste Dennis, Rachel Drown, Megan Fleming, Allison Humbert, Elizabeth Glasgo, Trent Kerns, Kelly Lingro, MacKenzie McMillin, Aaron Meyer, Breanna Pope, April Stalevicz, Brittney Steffen, Austin Steindl, Carolyn Williams, Carmen Wimberley, Robert Zenas, Kristen Butela, Hans Wildschutte
The emergence of bacterial pathogens resistant to all known antibiotics is a global health crisis. Adding to this problem is that major pharmaceutical companies have shifted away from antibiotic discovery due to low profitability. As a result, the pipeline of new antibiotics is essentially dry and many bacteria now resist the effects of most commonly used drugs. To address this global health concern, citizen science through the Small World Initiative (SWI) was formed in 2012. As part of SWI, students isolate bacteria from their local environments, characterize the strains, and assay for antibiotic production...
January 22, 2017: MicrobiologyOpen
https://www.readbyqxmd.com/read/28110462/endoluminal-and-interstitial-brachytherapy-for-the-treatment-of-gastrointestinal-malignancies-a-systematic-review
#2
REVIEW
Sujana Gottumukkala, Vasu Tumati, Brian Hrycushko, Michael Folkert
Radiation therapy is an integral component in the multimodality management of many gastrointestinal (GI) cancers at all stages of clinical presentation. With recent advances in technology and radiation delivery, external beam radiation therapy (EBRT) can be delivered with reduced toxicity. However, despite these advances, EBRT doses are still limited by the presence of radiosensitive serial structures near clinical targets in the GI tract. Relative to EBRT techniques, brachytherapy techniques have a lower integral dose and more rapid fall-off, allowing for high-dose delivery with little normal tissue exposure...
January 2017: Current Oncology Reports
https://www.readbyqxmd.com/read/28110442/correlates-of-health-related-quality-of-life-in-young-old-and-old-old-community-dwelling-older-adults
#3
Élvio R Quintal Gouveia, Bruna R Gouveia, Andreas Ihle, Matthias Kliegel, José A Maia, Sergi Bermudez I Badia, Duarte L Freitas
PURPOSE: This study aimed (1) to examine the role of potential correlates of HRQoL in a large representative sample of older adults, and (2) to investigate whether the relationships between HRQoL and potential factors differ as a function of HRQoL component (physical vs. mental) and/or age cohort (young-old vs. old-old). METHODS: This cross-sectional study included 802 older adults aged 60-79 years old. HRQoL was assessed using the SF-36 questionnaire. Functional fitness was assessed using the Senior Fitness Test...
January 21, 2017: Quality of Life Research
https://www.readbyqxmd.com/read/28110118/supporting-fingerprint-identification-assessments-using-a-skin-stretch-model-a-preliminary-study
#4
Rebecca Lee, Bruce Comber, Joshua Abraham, Michael Wagner, Chris Lennard, Xanthe Spindler, Claude Roux
To support fingerprint expert opinion, this research proposes an approach that combines subjective human analysis (as currently applied by fingerprint practitioners) with a statistical test of the result. This approach relies on the hypothesis that there are limits to the distortion caused by skin stretch. Such limits can be modelled by applying a multivariate normal probability density function to the distances and angle formed by a marked ridge characteristic and the two closest neighbouring minutiae. This study presents a model tested on 5 donors in total...
January 5, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28110067/poly-glycerol-sebacate-elastomer-supports-bone-regeneration-by-its-mechanical-properties-being-closer-to-osteoid-tissue-rather-than-to-mature-bone
#5
S H Zaky, K W Lee, J Gao, A Jensen, K Verdelis, Y Wang, A J Almarza, C Sfeir
: Mechanical load influences bone structure and mass. Arguing the importance of load-transduction, we investigated the mechanisms inducing bone formation using an elastomeric substrate. We characterized Poly (glycerol sebacate) (PGS) in-vitro for its mechanical properties, compatibility with osteoprogenitor cells regarding adhesion, proliferation, differentiation under compression versus static cultures and in-vivo for the regeneration of a rabbit ulna critical size defect. The load-transducing properties of PGS were compared in-vitro to a stiffer poly lactic-co- glycolic-acid (PLA/PGA) scaffold of similar porosity and interconnectivity...
January 18, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28109613/the-1951-harvard-student-uprising-against-the-intern-match
#6
Don K Nakayama, W Hardy Hendren
In the fall of 1951, a group of Harvard medical students led by W. Hardy Hendren, III organized a national movement against the newly instituted match that would assign graduating seniors to hospital internship programs. Before then, hospitals with intern positions to fill rushed to secure commitments from students, who in turn accepted the first decent offer that came their way. Knowing that students could not risk waiting for a better offer, hospitals pushed them into making early commitments. When some students began getting offers in their junior and sophomore years, medical schools, professional groups, and hospitals organized the National Inter-association Committee on Internships to deal with the issue...
January 18, 2017: Surgery
https://www.readbyqxmd.com/read/28109584/net-effects-of-nitrogen-fertilization-on-the-nutritive-value-and-digestibility-of-oat-forages
#7
W K Coblentz, M S Akins, J S Cavadini, W E Jokela
Applications of soil amendments containing N are part of routine forage-management strategies for grasses, with a primary goal of increasing forage yield. However, the effects of N fertilization on forage nutritive value, estimates of energy density, and in vitro dry matter or neutral detergent fiber disappearance sometimes have been erratic or inconsistent. Our objectives were to evaluate the effects of N fertilization on the nutritive value of a single cultivar (ForagePlus, Kratz Farms, Slinger, WI) of fall-grown oat fertilized at planting with 20, 40, 60, 80, or 100 kg of N/ha of urea or 2 rates of dairy slurry (42,300 or 84,600 L/ha)...
January 18, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28109420/improving-nutrition-by-increasing-supplemental-nutrition-assistance-program-benefits
#8
Ann M Collins, Jacob A Klerman
The diets of Americans fall far short of recommended dietary guidelines, and those who live in low-income households have even poorer diets than higher-income households. Many low-income Americans rely on the Supplemental Nutrition Assistance Program (SNAP). The program's dual goals are to improve food security and nutrition. Among the possible strategies to address dietary shortfalls among low-income Americans is to increase the SNAP benefit. This article uses data from the random assignment evaluation of the Summer Electronic Benefit Transfer for Children demonstration to add new insights on the impact of SNAP on diet quality for households receiving SNAP who also received SNAP-like benefits through Summer Electronic Benefit Transfer for Children...
February 2017: American Journal of Preventive Medicine
https://www.readbyqxmd.com/read/28109267/the-use-of-physical-restraints-in-long-term-care-in-spain-a-multi-center-cross-sectional-study
#9
Gabriel J Estévez-Guerra, Emilio Fariña-López, Eduardo Núñez-González, Manuel Gandoy-Crego, Fernando Calvo-Francés, Elizabeth A Capezuti
BACKGROUND: Physical restraint is a procedure used frequently in long-term care. It is a controversial practice because its use is associated with numerous complications and also affects freedom and individual autonomy. The objective of this study was to examine the use of physical restraint of long-term care residents with the ability to move voluntarily. METHODS: We conducted a cross-sectional observational and correlational multi-center study. Nine centers agreed to participate...
January 21, 2017: BMC Geriatrics
https://www.readbyqxmd.com/read/28109252/rna-tvcurve-a-web-server-for-rna-secondary-structure-comparison-based-on-a-multi-scale-similarity-of-its-triple-vector-curve-representation
#10
Ying Li, Xiaohu Shi, Yanchun Liang, Juan Xie, Yu Zhang, Qin Ma
BACKGROUND: RNAs have been found to carry diverse functionalities in nature. Inferring the similarity between two given RNAs is a fundamental step to understand and interpret their functional relationship. The majority of functional RNAs show conserved secondary structures, rather than sequence conservation. Those algorithms relying on sequence-based features usually have limitations in their prediction performance. Hence, integrating RNA structure features is very critical for RNA analysis...
January 21, 2017: BMC Bioinformatics
https://www.readbyqxmd.com/read/28109242/local-spin-dynamics-of-iron-oxide-magnetic-nanoparticles-dispersed-in-different-solvents-with-variable-size-and-shape-a-1-h-nmr-study
#11
M Basini, T Orlando, P Arosio, M F Casula, D Espa, S Murgia, C Sangregorio, C Innocenti, A Lascialfari
Colloidal magnetic nanoparticles (MNPs) based on a nearly monodisperse iron oxide core and capped by oleic acid have been used as model systems for investigating the superparamagnetic spin dynamics by means of magnetometry measurements and nuclear magnetic resonance ((1)H NMR) relaxometry. The key magnetic properties (saturation magnetization, coercive field, and frequency dependent "blocking" temperature) of MNPs with different core size (3.5 nm, 8.5 nm, and 17.5 nm), shape (spherical and cubic), and dispersant (hexane and water-based formulation) have been determined...
January 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28109225/effects-of-stereochemistry-and-copolymerization-on-the-lcst-of-pnipam
#12
Tiago E de Oliveira, Debashish Mukherji, Kurt Kremer, Paulo A Netz
Poly(N-isopropylacrylamide) (PNIPAm) is a smart polymer that presents a lower critical transition temperature (LCST) of 305 K. Interestingly, this transition point falls within the range of the human body temperature, making PNIPAm a highly suitable candidate for bio-medical applications. However, it is sometimes desirable to have a rather flexible tuning of the LCST of these polymers to further increase their range of applications. In this work, we use all-atom molecular dynamics simulations to study the LCST of PNIPAm-based (co-)polymers...
January 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28108645/whole-body-hyperthermia-but-not-skin-hyperthermia-accelerates-brain-and-locomotor-limb-circulatory-strain-and-impairs-exercise-capacity-in-humans
#13
Steven J Trangmar, Scott T Chiesa, Kameljit K Kalsi, Niels H Secher, José González-Alonso
Cardiovascular strain and hyperthermia are thought to be important factors limiting exercise capacity in heat-stressed humans, however, the contribution of elevations in skin (Tsk) versus whole body temperatures on exercise capacity has not been characterized. To ascertain their relationships with exercise capacity, blood temperature (TB), oxygen uptake (V̇O2), brain perfusion (MCA Vmean), locomotor limb hemodynamics, and hematological parameters were assessed during incremental cycling exercise with elevated skin (mild hyperthermia; HYPmild), combined core and skin temperatures (moderate hyperthermia; HYPmod), and under control conditions...
January 2017: Physiological Reports
https://www.readbyqxmd.com/read/28108620/adults-miscoded-and-misdiagnosed-as-having-pneumonia-results-from-the-british-thoracic-society-pneumonia-audit
#14
Priya Daniel, Thomas Bewick, Sally Welham, Tricia M Mckeever, Wei Shen Lim
A key objective of the British Thoracic Society national community-acquired pneumonia (CAP) audit was to determine the clinical characteristics and outcomes of hospitalised adults given a primary discharge code of pneumonia but who did not fulfil accepted diagnostic criteria for pneumonia. Adults miscoded as having pneumonia (n=1251) were older compared with adults with CAP (n=6660) (median 80 vs 78 years, p<0.001) and had more comorbid disease, significantly fewer respiratory symptoms (fever, cough, dyspnoea, pleuritic pain), more constitutional symptoms (general deterioration, falls) and significantly lower 30-day inpatient mortality (14...
January 20, 2017: Thorax
https://www.readbyqxmd.com/read/28108446/chaincleaner-improves-genome-alignment-specificity-and-sensitivity
#15
Hernando G Suarez, Bjoern E Langer, Pradnya Ladde, Michael Hiller
MOTIVATION: Accurate alignments between entire genomes are crucial for comparative genomics. However, computing sensitive and accurate genome alignments is a challenging problem, complicated by genomic rearrangements. RESULTS: Here we present a fast approach, called chainCleaner, that improves the specificity in genome alignments by accurately detecting and removing local alignments that obscure the evolutionary history of genomic rearrangements. Systematic tests on alignments between the human and other vertebrate genomes show that chainCleaner (i) improves the alignment of numerous orthologous genes, (ii) exposes alignments between exons of orthologous genes that were masked before by alignments to pseudogenes, and (iii) recovers hundreds of kilobases in local alignments that otherwise would fall below a minimum score threshold...
January 19, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28108423/isolated-transverse-process-fractures-a-systematic-analysis
#16
REVIEW
Daniel T Nagasawa, Timothy T Bui, Carlito Lagman, Seung J Lee, Lawrance K Chung, Tianyi Niu, Alexander Tucker, Bilwaj Gaonkar, Isaac Yang, Luke Macyszyn
OBJECTIVE: To review the literature on isolated transverse process fractures (ITPFs) and provide evidence for and validate the current practice of conservative management. METHODS: The PubMed database was searched for published literature related to ITPFs. Baseline patient (age, sex, presentation, mechanism of injury) and fracture (number of fractures, level, single or multi-segmental) characteristics were extracted. Management, and outcomes were also recorded. Statistical comparisons were ascertained through N-1 Pearson Chi-squared tests...
January 17, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28108319/how-the-changes-in-the-system-affect-trauma-care-provision-the-assessment-of-and-implications-for-lithuanian-trauma-service-performance-in-2007-2012
#17
Žilvinas Dambrauskas, Vytautas Aukštakalnis, Aurika Karbonskienė, Dmitrijus Kačiurinas, Jolanta Vokietienė, Robertas Lapka, Algimantas Pamerneckas, Narūnas Porvaneckas, Kęstutis Stašaitis, Nedas Jasinskas, Paulius Dobožinskas, Dinas Vaitkaitis, Raimundas Lunevičius
OBJECTIVE: The aim of this study was to identify and assess the effects of changes in the Lithuanian trauma service from 2007 to 2012. We postulate that the implications derived from this study will be of importance to trauma policy planners and makers in Lithuania and throughout other countries of Eastern and Central Europe. MATERIALS AND METHODS: Out of 10,390 trauma admissions to four trauma centers in 2007, 294 patients (2.8%) were randomly selected for the first arm of a representative study sample...
January 6, 2017: Medicina
https://www.readbyqxmd.com/read/28108207/cognitive-impairment-is-very-common-in-elderly-patients-with-syncope-and-unexplained-falls
#18
Susanne C de Ruiter, Jos F M de Jonghe, Tjeerd Germans, Jaap H Ruiter, René W M M Jansen
OBJECTIVES: To evaluate the prevalence of cognitive impairment (CI), including mild CI and dementia, in elderly patients with syncope and unexplained falls. In this population, we compared the use of the Mini-Mental State Examination (MMSE) with a cognitive screening test that assesses executive dysfunction typical of subcortical (vascular) CI, that is, the Montreal Cognitive Assessment (MoCA). DESIGN: Observational cohort study. SETTING: Outpatient fall and syncope clinic...
January 17, 2017: Journal of the American Medical Directors Association
https://www.readbyqxmd.com/read/28108205/modifying-the-phenotypic-frailty-model-in-predicting-risk-of-major-osteoporotic-fracture-in-the-elderly
#19
Guowei Li, Alexandra Papaioannou, Lehana Thabane, Mitchell A H Levine, George Ioannidis, Andy K O Wong, Arthur Lau, Jonathan D Adachi
INTRODUCTION: The phenotypic frailty (PF) model (including slow walking, low physical activity, exhaustion, weakness, and unintentional weight loss) has been widely used to quantify the degree of frailty and predict risks of adverse health outcomes for the elderly. However, evidence has shown that not all the components included in the PF model contribute equally, and low predictive accuracy of the PF model has been reported in predicting risks of outcomes. We aimed to improve predictive accuracy of the PF model in risk of major osteoporotic fracture (MOF) in the elderly by modifying its weighting of individual components...
January 17, 2017: Journal of the American Medical Directors Association
https://www.readbyqxmd.com/read/28108015/seasonal-variation-of-polycyclic-aromatic-hydrocarbons-in-the-surface-sediments-of-the-southern-caspian-sea
#20
Mehrnaz Baniemam, Ali Mashinchian Moradi, Alireza Riyahi Bakhtiari, Mohammad Reza Fatemi, Keivan Ejlali Khanghah
The concentrations of 16 polycyclic aromatic hydrocarbons (PAHs) were determined in sediments from the southern Caspian Sea in fall 2015 and winter 2016. The sum of 16 PAH (ΣPAH) concentrations varied from 17.3±3.05 to 926.7±157.37ngg(-1) dry weight and 14.3±0.58 to 85.8±4.41ngg(-1) dry weight in fall and winter, respectively. There was no significant correlation between PAH and total organic carbon contents (p>0.05). PAH source identification showed that the PAHs in the sediments originated from petroleum and petroleum combustion...
January 17, 2017: Marine Pollution Bulletin
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