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https://www.readbyqxmd.com/read/28806482/automated-segmentation-and-quantification-of-actin-stress-fibres-undergoing-experimentally-induced-changes
#1
H Rogge, N Artelt, N Endlich, K Endlich
The actin cytoskeleton is a main component of cells and it is crucially involved in many physiological processes, e.g. cell motility. Changes in the actin organization can be effected by diseases or vice versa. Due to the nonuniform pattern, it is difficult to quantify reasonable features of the actin cytoskeleton for a significantly high cell number. Here, we present an approach capable to fully segment and analyse the actin cytoskeleton of 2D fluorescence microscopic images with a special focus on stress fibres...
August 14, 2017: Journal of Microscopy
https://www.readbyqxmd.com/read/28805950/management-of-osteonecrosis-of-the-femoral-head-with-pedicled-iliac-bone-flap-transfer-a-multicenter-study-of-2190-patients
#2
Dewei Zhao, Hui Xie, Yongqing Xu, Yisheng Wang, Aixi Yu, Youwen Liu, Aimin Wang, Wei He, Xiuli Wang, Zirong Li, Wei Sun, Simiao Tian, Benjie Wang, Baoyi Liu
BACKGROUND: Osteonecrosis of the femoral head (ONFH) often affects young active adults and leads to destruction of the hip joint and disabling arthritis. Several procedures have been developed to arrest the progress of osteonecrosis and postpone the procedure of total hip replacement especially in young patients. The aim of this multicenter study was to analyze the results of the use of the vascularized iliac bone flap transfer for management of ONFH. METHODS: From January 1985 to December 2012, a total of 2190 patients (2690 hips) with the mean age of 43...
August 14, 2017: Microsurgery
https://www.readbyqxmd.com/read/28805390/sampling-long-versus-short-range-interactions-defines-the-ability-of-force-fields-to-reproduce-the-dynamics-of-intrinsically-disordered-proteins
#3
Davide Mercadante, Johannes Andreas Wagner, Iker Valle Aramburu, Edward A Lemke, Frauke Gräter
Molecular dynamics simulations have valuably complemented experiments describing the dynamics of intrinsically disordered proteins (IDPs), particularly since the proposal of models to solve the artificial collapse of IDPs in silico. Such models suggest redefining non-bonded interactions, by either increasing water dispersion forces or adopting the Kirkwood-Buff force field. These approaches yield extended conformers that better comply with experiments, but it is unclear if they all sample the same intra-chain dynamics of IDPs...
August 14, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28803879/pathway-profiles-based-on-gene-set-enrichment-analysis-in-the-honey-bee-apis-mellifera-under-brood-rearing-suppressed-conditions
#4
Kyungmun Kim, Ju Hyeon Kim, Young Ho Kim, Seong-Eui Hong, Si Hyeock Lee
Perturbation of normal behaviors in honey bee colonies by any external factor can immediately reduce the colony's capacity for brood rearing, which can eventually lead to colony collapse. To investigate the effects of brood-rearing suppression on the biology of honey bee workers, gene-set enrichment analysis of the transcriptomes of worker bees with or without suppressed brood rearing was performed. When brood rearing was suppressed, pathways associated with both protein degradation and synthesis were simultaneously over-represented in both nurses and foragers, and their overall pathway representation profiles resembled those of normal foragers and nurses, respectively...
August 10, 2017: Genomics
https://www.readbyqxmd.com/read/28803375/lung-ultrasound-in-internal-medicine-efficiently-drives-the-management-of-patients-with-heart-failure-and-speeds-up-the-discharge-time
#5
Chiara Mozzini, Marco Di Dio Perna, Giancarlo Pesce, Ulisse Garbin, Anna Maria Fratta Pasini, Andrea Ticinesi, Antonio Nouvenne, Tiziana Meschi, Alder Casadei, Maurizio Soresi, Luciano Cominacini
Lung ultrasound (LUS) is a valid tool for the assessment of heart failure (HF) through the quantification of the B-lines. This study in HF patients aims to evaluate if LUS: (1) can accelerate the discharge time; (2) can efficiently drive diuretic therapy dosage; and (3) may have better performance compared to the amino-terminal portion of B type natriuretic peptide (NT-proBNP) levels in monitoring HF recovery. A consecutive sample of 120 HF patients was admitted from the Emergency Department (ED) to the Internal Medicine Department (Verona University Hospital)...
August 12, 2017: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/28803015/calf-and-replacement-heifer-mortality-from-birth-until-weaning-in-pasture-based-dairy-herds-in-new-zealand
#6
E L Cuttance, W A Mason, J McDermott, R A Laven, S McDougall, C V C Phyn
The aims of this study were to (1) estimate the perinatal (birth to 24 h) and postnatal (∼24 h to the mean weaning age of 13 wk) mortality risk in pasture-based dairy calves until weaning, and (2) identify associated risk factors in the 2015 calving season. A prospective survey of 32 seasonal calving dairy farms was undertaken. Farmers recorded (daily) the number and sex of the calves alive or dead in the paddocks where cows calved. All daily animal movements in and out of the calf rearing facilities, including death and euthanasia, and the identification of the animals (if applicable) were recorded, and a survey of the farm management practices was undertaken...
August 9, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28802894/doomed-to-collapse-why-algerian-steppe-rangelands-are-overgrazed-and-some-lessons-to-help-land-use-transitions
#7
Jaime Martínez-Valderrama, Javier Ibáñez, Gabriel Del Barrio, Francisco J Alcalá, Maria E Sanjuán, Alberto Ruiz, Azziz Hirche, Juan Puigdefábregas
This work illustrates the application of a simulation model to analyse how swiftly large-scale land-use changes can drive broad territories to collapse. In this sense, the economic needs of a population should not clash with the natural environment but rather be reconciled with it. Abundant literature deals with the integration of socioeconomic drivers, ecological aspects, farming management, and climatology related to Algerian rangeland degradation. The present study seeks to compare the time course of Alfa grass biomass and the livestock raised on these distinctive rangelands under two different land-use strategies...
August 9, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28802720/application-of-green-fluorescent-protein-to-measure-antimicrobial-efficacy-and-the-kinetics-of-cell-death-against-escherichia-coli
#8
Richard Greenhalgh, Malcolm Greenhalgh, Fadwa Alshareef, Geoffrey D Robson
Industrial antimicrobials have been extensively used to control unwanted microbial growth by incorporation into a variety of products such as plastics and paints, reducing biodeterioration and biofouling and extending the lifespan of the product. Industrial antimicrobials generally have broad sites of action affecting core cellular functions such as central metabolism, enzyme function, cell wall or DNA synthesis and can either be biocidal or biostatic. In addition, susceptibility can be affected by the metabolic state of the microbe, with metabolically inactive cells generally more resistant than metabolically active cells...
August 9, 2017: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/28802697/the-insertion-of-polybia-mp1-into-phospholipid-monolayers-is-regulated-by-its-anionic-nature-and-phase-state
#9
Dayane S Alvares, Natalia Wilke, João Ruggiero Neto, Maria Laura Fanani
Polybia-MP1 or simply MP1 (IDWKKLLDAAKQIL-NH2) is a peptide with broad-spectrum bactericidal activity and a strong inhibitory effect against cancer cells. The aim of this work was to evaluate the effect of biophysical properties such as membrane texture and film thickness on MP1 interaction with neutral and anionic lipid membranes. For this purpose, we first explored the peptide's surface behavior. MP1 showed high surface activity, adsorbing onto bare air/aqueous interfaces up to higher surface pressures than the collapse pressure of MP1 Langmuir films...
August 9, 2017: Chemistry and Physics of Lipids
https://www.readbyqxmd.com/read/28802425/outcomes-of-dynamic-hip-screw-augmented-with-trochanteric-wiring-for-treatment-of-unstable-type-a2-intertrochanteric-femur-fractures
#10
Chetan Puram, Chetan Pradhan, Atul Patil, Vivek Sodhai, Parag Sancheti, Ashok Shyam
BACKGROUND: Posteromedial and greater trochanteric fragments are a major cause of telescoping and medialization of the femoral shaft in an unstable intertrochanteric fracture. This leads to significant limb shortening, fracture collapse in varus position and implant failure, which can be prevented by trochanteric wiring in addition to dynamic hip screw (DHS) fixation. The purpose of our study is to assess the outcomes of DHS augmented with trochanteric wiring in unstable type A2 intertrochanteric fractures...
August 2017: Injury
https://www.readbyqxmd.com/read/28801312/bioethics-and-multiculturalism-nuancing-the-discussion
#11
Chris Durante
In his recent analysis of multiculturalism, Tom Beauchamp has argued that those who implement multicultural reasoning in their arguments against common morality theories, such as his own, have failed to understand that multiculturalism is neither a form of moral pluralism nor ethical relativism but is rather a universalistic moral theory in its own right. Beauchamp's position is indeed on the right track in that multiculturalists do not consider themselves ethical relativists. Yet, Beauchamp tends to miss the mark when he argues that multiculturalism is in effect a school of thought that endorses a form of moral universalism that is akin to his own vision of a common morality...
August 11, 2017: Journal of Medical Ethics
https://www.readbyqxmd.com/read/28800687/the-profound-effect-of-harmful-cyanobacterial-blooms-from-food-web-and-management-perspectives
#12
Sigitas Šulčius, Danguolė Montvydienė, Hanna Mazur-Marzec, Jūratė Kasperovičienė, Rokas Rulevičius, Živilė Cibulskaitė
Sustainable and effective water management plans must have a reliable risk assessment strategies for harmful cyanobacterial blooms (HABs) that would enable timely decisions to be made, thus avoiding the trespassing of ecological thresholds, leading to the collapse of ecosystem structure and function. Such strategies are usually based on cyanobacterial biomass and/or on the monitoring of known toxins, which may, however, in many cases, under- or over-represent the actual toxicity of the HAB. Therefore, in this study, by the application of growth-inhibition assays using different bacteria, algae, zooplankton and fish species, we assessed the toxicological potential of two cyanobacterial blooms that differed in total cyanobacterial biomass, species composition and cyanopeptide profiles...
August 7, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28800204/comparison-of-robotic-and-coblation-tongue-base-resection-for-obstructive-sleep-apnea
#13
Chi Sang Hwang, Jin Won Kim, Jin Woong Kim, Eun Jung Lee, Chang-Hoon Kim, Joo-Heon Yoon, Hyung-Ju Cho
OBJECTIVES: To compare the efficacy and safety of transoral robotic surgery (TORS) with endoscope-guided coblation tongue base resection. DESIGN: Retrospective case-control study. SETTING: University-based tertiary care medical center. PARTICIPANTS: OSA patients who underwent endoscope-guided tongue base coblation resection or TORS in combination with lateral pharyngoplasty at a single institution in South Korea between April 2013 and December 2016 were investigated...
August 11, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/28799300/use-of-freestyle-libre-protm-flash-glucose-monitoring-system-in-different-clinical-situations-at-a-diabetes-centre
#14
Srinivasan Ratna, Radhakrishnan Subashini, Ranjit Unnikrishnan, Viswanathan Mohan
Flash Glucose Monitoring (FGM) is a newly introduced Glucose Monitoring system. FGM provides both graphical representation of qualitative and quantitative changes in glucose levels occurring over 14-day period collapsed into single modal day graph as well as day by day graphs. In this report, we present our experience with FGM in different clinical situations. In our experience FGM is an extremely useful clinical tool for detection of glucose variability, hyperglycemia and hypoglycemia. It can also be used as an effective educational tool when the data from FGM is shared with the patient...
August 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28798738/zika-virus-an-emerging-worldwide-threat
#15
Irfan A Rather, Jameel B Lone, Vivek K Bajpai, Woon K Paek, Jeongheui Lim
ZIKA virus (ZIKV) poses a severe threat to the world. Recent outbreaks of ZIKV after 2007 along with its quick transmission have made this virus a matter of international concern. The virus shows symptoms that are similar to those caused in the wake of dengue virus (DENV) and other flaviviruses, which makes it difficult to discern the viral infection. Diagnosis is further complicated as the virus cross-reacts with antibodies of other viruses. Currently, molecular diagnosis of the virus is being performed by RT-PCR and IgM-captured enzyme-linked immunosorbent assay (MAC-ELISA)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28798384/dynamics-of-spatiotemporal-line-defects-and-chaos-control-in-complex-excitable-systems
#16
Marcel Hörning, François Blanchard, Akihiro Isomura, Kenichi Yoshikawa
Spatiotemporal pattern formation governs dynamics and functions in various biological systems. In the heart, excitable waves can form complex oscillatory and chaotic patterns even at an abnormally higher frequency than normal heart beats, which increase the risk of fatal heart conditions by inhibiting normal blood circulation. Previous studies suggested that line defects (nodal lines) play a critical role in stabilizing those undesirable patterns. However, it remains unknown if the line defects are static or dynamically changing structures in heart tissue...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28797398/right-middle-lobe-collapse-and-pleural-effusion-in-an-18-year-old-man
#17
Joshua Patterson, David Graham, Alan George, Micah Will, Deena Sutter
An 18-year-old African American male subject presented to an acute care clinic with 3 days of productive cough, chills, pleuritic right chest pain, sore throat with hoarseness, congestion, and intermittent shortness of breath. He recently relocated to Texas from Georgia to undergo basic military training. He denied any other recent travel or contact with persons with pulmonary TB or other respiratory illnesses. His medical history was significant for glucose-6-phosphate dehydrogenase deficiency and sickle cell trait...
August 2017: Chest
https://www.readbyqxmd.com/read/28797104/increased-microrna-93-5p-inhibits-osteogenic-differentiation-by-targeting-bone-morphogenetic-protein-2
#18
Ying Zhang, Qiu-Shi Wei, Wei-Bin Ding, Lei-Lei Zhang, Hui-Chao Wang, Ying-Jie Zhu, Wei He, Yu-Na Chai, You-Wen Liu
BACKGROUND AND PURPOSE: Trauma-induced osteonecrosis of the femoral head (TIONFH) is a major complication of femoral neck fractures. Degeneration and necrosis of subchondral bone can cause collapse, which results in hip joint dysfunction in patients. The destruction of bone metabolism homeostasis is an important factor for osteonecrosis. MicroRNAs (miRNAs) have an important role in regulating osteogenic differentiation, but the mechanisms underlying abnormal bone metabolism of TIONFH are poorly understood...
2017: PloS One
https://www.readbyqxmd.com/read/28796721/mechanisms-predisposing-factors-and-prognosis-of-intraoperative-vertebral-subluxation-during-pedicle-subtraction-osteotomy-in-surgical-correction-of-thoracolumbar-kyphosis-secondary-to-ankylosing-spondylitis
#19
Bang-Ping Qian, Sai-Hu Mao, Jun Jiang, Bin Wang, Yong Qiu
STUDY DESIGN: A retrospective study. OBJECTIVE: To analyze the mechanisms, predisposing factors, and prognosis of the intraoperative vertebral subluxation (VS) during pedicle subtraction osteotomy (PSO) for thoracolumbar kyphosis secondary to ankylosing spondylitis (AS). SUMMARY OF BACKGROUND DATA: VS is one of the most daunting challenges that surgeons encounter during PSO closure, especially in patients with AS with ankylosed and mostly osteoporotic spine...
August 15, 2017: Spine
https://www.readbyqxmd.com/read/28795692/the-novel-resveratrol-derivative-3-5-diethoxy-3-4-dihydroxy-trans-stilbene-induces-mitochondrial-ros-mediated-er-stress-and-cell-death-in-human-hepatoma-cells-in-vitro
#20
Jae-Woo Park, Woo-Gyun Choi, Phil-Jun Lee, Su-Wol Chung, Byung-Sam Kim, Hun-Taeg Chung, Sungchan Cho, Jong-Heon Kim, Byoung-Heon Kang, Hyoungsu Kim, Hong-Pyo Kim, Sung-Hoon Back
Resveratrol (3,5,4'-trihydroxy-trans-stilbene) is a well-known polyphenol that is present in grapes, peanuts, pine seeds, and several other plants. Resveratrol exerts deleterious effects on various types of human cancer cells. Here, we analyzed the cell death-inducing mechanisms of resveratrol-006 (Res-006), a novel resveratrol derivative in human liver cancer cells in vitro. Res-006 was more effectively suppressed the viability of HepG2 human hepatoma cells than resveratrol (the IC50 values were 67.2 and 354...
August 10, 2017: Acta Pharmacologica Sinica
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