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https://www.readbyqxmd.com/read/28927728/cryopreservation-of-human-whole-blood-allows-immunophenotyping-by-flow-cytometry-up-to-30days-after-cell-isolation
#1
R Madelaine Paredes, Douglas K Tadaki, Amanda Sooter, Fabia Gamboni, C D R Forest Sheppard
Immunophenotyping of whole blood (WB) by flow cytometry (FC) is used clinically to assess a patient's immune status and also in biomedical research. Current protocols recommend storage of immunolabeled samples at 4°C with FC analysis to be completed within seven days. This data acquisition window can be extended to up to one year post-labeling, but this requires cryopreservation of the samples at ultra-low temperatures (≤-80°C or in liquid nitrogen). In this study we optimized a standardized cryopreservation protocol to enable preservation of immunolabeled, human WB samples at -20°C for FC and tested its effectiveness after 0, 5, 15 or 30days...
September 16, 2017: Journal of Immunological Methods
https://www.readbyqxmd.com/read/28925991/a-multiscale-imaging-and-modelling-dataset-of-the-human-inner-ear
#2
Nicolas Gerber, Mauricio Reyes, Livia Barazzetti, Hans Martin Kjer, Sergio Vera, Martin Stauber, Pavel Mistrik, Mario Ceresa, Nerea Mangado, Wilhelm Wimmer, Thomas Stark, Rasmus R Paulsen, Stefan Weber, Marco Caversaccio, Miguel A González Ballester
Understanding the human inner ear anatomy and its internal structures is paramount to advance hearing implant technology. While the emergence of imaging devices allowed researchers to improve understanding of intracochlear structures, the difficulties to collect appropriate data has resulted in studies conducted with few samples. To assist the cochlear research community, a large collection of human temporal bone images is being made available. This data descriptor, therefore, describes a rich set of image volumes acquired using cone beam computed tomography and micro-CT modalities, accompanied by manual delineations of the cochlea and sub-compartments, a statistical shape model encoding its anatomical variability, and data for electrode insertion and electrical simulations...
September 19, 2017: Scientific Data
https://www.readbyqxmd.com/read/28924503/biochemical-and-structural-characterization-of-a-novel-arginine-kinase-from-the-spider-polybetes-pythagoricus
#3
Aldana Laino, Alonso A Lopez-Zavala, Karina D Garcia-Orozco, Jesus S Carrasco-Miranda, Marianela Santana, Vivian Stojanoff, Rogerio R Sotelo-Mundo, Carlos Fernando Garcia
Energy buffering systems are key for homeostasis during variations in energy supply. Spiders are the most important predators for insects and therefore key in terrestrial ecosystems. From biomedical interest, spiders are important for their venoms and as a source of potent allergens, such as arginine kinase (AK, EC 2.7.3.3). AK is an enzyme crucial for energy metabolism, keeping the pool of phosphagens in invertebrates, and also an allergen for humans. In this work, we studied AK from the Argentininan spider Polybetes pythagoricus (PpAK), from its complementary DNA to the crystal structure...
2017: PeerJ
https://www.readbyqxmd.com/read/28923006/repeat-a-framework-to-assess-empirical-reproducibility-in-biomedical-research
#4
Leslie D McIntosh, Anthony Juehne, Cynthia R H Vitale, Xiaoyan Liu, Rosalia Alcoser, J Christian Lukas, Bradley Evanoff
BACKGROUND: The reproducibility of research is essential to rigorous science, yet significant concerns of the reliability and verifiability of biomedical research have been recently highlighted. Ongoing efforts across several domains of science and policy are working to clarify the fundamental characteristics of reproducibility and to enhance the transparency and accessibility of research. METHODS: The aim of the proceeding work is to develop an assessment tool operationalizing key concepts of research transparency in the biomedical domain, specifically for secondary biomedical data research using electronic health record data...
September 18, 2017: BMC Medical Research Methodology
https://www.readbyqxmd.com/read/28920491/consumer-satisfaction-with-antipsychotic-medication-monitoring-appointments-the-role-of-consumer-prescriber-communication-patterns
#5
Catherine M Reich, Samantha M Hack, Elizabeth A Klingaman, Clayton H Brown, Li Juan Fang, Lisa B Dixon, Danielle R Jahn, Julie A Kreyenbuhl
OBJECTIVE: The study was designed to explore patterns of prescriber communication behaviors as they relate to consumer satisfaction among a serious mental illness sample. METHODS: Recordings from 175 antipsychotic medication-monitoring appointments between veterans with psychiatric disorders and their prescribers were coded using the Roter Interaction Analysis System (RIAS) for communication behavioral patterns. RESULTS: The frequency of prescriber communication behaviors (i...
September 17, 2017: International Journal of Psychiatry in Clinical Practice
https://www.readbyqxmd.com/read/28919434/ultrasensitive-microrna-21-detection-based-on-dna-hybridization-chain-reaction-and-sybr-green-dye
#6
Zhi Li, Bingchen Li, Yunlei Zhou, Huanshun Yin, Jun Wang, Shiyun Ai
It is extremely important for quantifying trace microRNAs in the biomedical applications. In this study, an ultrasensitive, rapid and efficient label-free fluorescence method was proposed and applied for detecting microRNA-21 in serum of gastric cancer patients based on DNA hybridization chain reaction (HCR). DNA H1 and DNA H2 were designed and used as hairpin probes, the HCR was proceeded in the presence of target microRNAs. Amounts of SYBR Green І dyes were used as signal molecules to intercalate long DNA concatemers from HCR, which guaranteed the model of label-free fluorescence and strong fluorescence density...
September 15, 2017: Analytical Biochemistry
https://www.readbyqxmd.com/read/28918414/a-protocol-of-a-cross-sectional-study-evaluating-an-online-tool-for-early-career-peer-reviewers-assessing-reports-of-randomised-controlled-trials
#7
Anthony Chauvin, David Moher, Doug Altman, David L Schriger, Sabina Alam, Sally Hopewell, Daniel R Shanahan, Alessandro Recchioni, Philippe Ravaud, Isabelle Boutron
INTRODUCTION: Systematic reviews evaluating the impact of interventions to improve the quality of peer review for biomedical publications highlighted that interventions were limited and have little impact. This study aims to compare the accuracy of early career peer reviewers who use an innovative online tool to the usual peer reviewer process in evaluating the completeness of reporting and switched primary outcomes in completed reports. METHODS AND ANALYSIS: This is a cross-sectional study of individual two-arm parallel-group randomised controlled trials (RCTs) published in the BioMed Central series medical journals, BMJ, BMJ Open and Annals of Emergency Medicine and indexed with the publication type 'Randomised Controlled Trial'...
September 15, 2017: BMJ Open
https://www.readbyqxmd.com/read/28916334/special-issue-11th-apccs-2016-chemistry-environmental-biotechnology-and-biomedical-aspects-of-chitin-and-chitosan
#8
EDITORIAL
R Jayakumar, S Meenakshi
No abstract text is available yet for this article.
November 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28912565/real-time-image-processing-for-microscopy-based-label-free-imaging-flow-cytometry-in-a-microfluidic-chip
#9
Young Jin Heo, Donghyeon Lee, Junsu Kang, Keondo Lee, Wan Kyun Chung
Imaging flow cytometry (IFC) is an emerging technology that acquires single-cell images at high-throughput for analysis of a cell population. Rich information that comes from high sensitivity and spatial resolution of a single-cell microscopic image is beneficial for single-cell analysis in various biological applications. In this paper, we present a fast image-processing pipeline (R-MOD: Real-time Moving Object Detector) based on deep learning for high-throughput microscopy-based label-free IFC in a microfluidic chip...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28903821/age-and-sex-associated-differences-in-phenotypic-and-functional-characteristics-of-peripheral-blood-lymphocytes-in-chimpanzees-pan-troglodytes
#10
Pramod N Nehete, Elizabeth R Magden, Bharti P Nehete, Lawrence E Williams, Christian R Abee, K Jagannadha Sastry
Chimpanzees are the closest phylogenetic relatives to humans, sharing more than 98% genetic sequence identity. These genetic similarities prompted the belief that chimpanzees can serve as an ideal model for human disease conditions and vaccine development. However, in light of the recent NIH decision to phase out biomedical research in chimpanzees and retire NIH-supported chimpanzees, data from the present study will continue to provide value for the care of aged and sick chimpanzees located in zoos, sanctuaries, and primate centers...
September 1, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/28903573/crispr-in-research-and-treatment-of-multiple-myeloma
#11
M M Simicek, K Growkova, R Hájek
In the recent years, there was a remarkable advance in research and clinical implementation of the genome editing technologies. The most remarkable was a discovery of the bacterial adaptive immune system called CRISPR and its rapid transformation into a robust and broadly applicable technology that completely revolutionized both basic and applied biomedical research. Implementation of CRISPR makes genome modification easier, faster and significantly cheaper compare to any other currently available technology...
2017: Klinická Onkologie: Casopis Ceské a Slovenské Onkologické Spolecnosti
https://www.readbyqxmd.com/read/28903187/comparative-physiochemical-analysis-of-hydrophobins-produced-in-escherichia-coli-and-pichia-pastoris
#12
Agnes Przylucka, Gunseli Bayram Akcapinar, Klaus Bonazza, Thiago M Mello-de-Sousa, Astrid R Mach-Aigner, Victor Lobanov, Hinrich Grothe, Christian P Kubicek, Erik Reimhult, Irina S Druzhinina
Hydrophobins (HFBs) are small surface-active proteins secreted by filamentous fungi. Being amphiphilic, they spontaneously form layers that convert surfaces from hydrophilic to hydrophobic and vice versa. We have compared properties of the class II HFB4 and HFB7 from Trichoderma virens as produced in Escherichia coli and Pichia pastoris. Since the production in E. coli required denaturation/renaturation steps because of inclusion bodies, this treatment was also applied to HFBs produced and secreted in yeast...
September 4, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28899340/regulatory-network-changes-between-cell-lines-and-their-tissues-of-origin
#13
Camila M Lopes-Ramos, Joseph N Paulson, Cho-Yi Chen, Marieke L Kuijjer, Maud Fagny, John Platig, Abhijeet R Sonawane, Dawn L DeMeo, John Quackenbush, Kimberly Glass
BACKGROUND: Cell lines are an indispensable tool in biomedical research and often used as surrogates for tissues. Although there are recognized important cellular and transcriptomic differences between cell lines and tissues, a systematic overview of the differences between the regulatory processes of a cell line and those of its tissue of origin has not been conducted. The RNA-Seq data generated by the GTEx project is the first available data resource in which it is possible to perform a large-scale transcriptional and regulatory network analysis comparing cell lines with their tissues of origin...
September 12, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28898827/purification-and-antioxidant-activity-of-phycocyanin-from-synechococcus-sp-r42dm-isolated-from-industrially-polluted-site
#14
Ravi R Sonani, Stuti Patel, Bela Bhastana, Kinnari Jakharia, Mukesh G Chaubey, Niraj K Singh, Datta Madamwar
The cyanobacterium Synechococcus sp. R42DM, isolated from an industrially polluted site Vatva, Gujarat, India was recognized to produce phycocyanin (PC) as major phycobiliprotein. In present study, the combinatorial approach of chemical and physical methods i.e. Triton-X 100 treatment and ultra-sonication was designed for extraction of PC. From cell extract, the intact and functional-PC was purified up to purity 4.03 by ammonium sulphate fractionation and ion-exchange chromatography. The PC displayed considerable in vitro antioxidant and radical-scavenging activity...
August 31, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28893854/will-big-data-close-the-missing-heritability-gap
#15
Hwasoon Kim, Alexander Grueneberg, Ana I Vazquez, Stephen Hsu, Gustavo de Los Campos
Despite the important discoveries reported by Genome-Wide Association studies, for most traits and diseases the prediction R-squared (R-sq.) achieved with genetic scores remains considerably lower than the trait heritability. Modern biobanks will soon deliver unprecedentedly large biomedical data sets: Will the advent of Big Data close the gap between the trait heritability and the proportion of variance that can be explained by a genomic predictor? We addressed this question using Bayesian methods and a data analysis approach that produces a surface response relating prediction R-sq...
September 11, 2017: Genetics
https://www.readbyqxmd.com/read/28893304/preventing-hiv-infection-without-targeting-the-virus-how-reducing-hiv-target-cells-at-the-genital-tract-is-a-new-approach-to-hiv-prevention
#16
REVIEW
Julie Lajoie, Lucy Mwangi, Keith R Fowke
For over three decades, HIV infection has had a tremendous impact on the lives of individuals and public health. Microbicides and vaccines studies have shown that immune activation at the genital tract is a risk factor for HIV infection. Furthermore, lower level of immune activation, or what we call immune quiescence, has been associated with a lower risk of HIV acquisition. This unique phenotype is observed in highly-exposed seronegative individuals from different populations including female sex workers from the Pumwani cohort in Nairobi, Kenya...
September 12, 2017: AIDS Research and Therapy
https://www.readbyqxmd.com/read/28892622/gold-loaded-nanoporous-ferric-oxide-nanocubes-with-peroxidase-mimicking-activity-for-electrocatalytic-and-colorimetric-detection-of-autoantibody
#17
Mostafa Kamal Masud, Sharda Yadav, Md Nazmul Islam, Nam-Trung Nguyen, Carlos Salomon, Richard Kline, Hatem R Alamri, Zeid Abdullah Alothman, Yusuke Yamauchi, Md Shahriar A Hossain, Muhammad J A Shiddiky
Enzyme-mimicking activity of iron oxide based nanostructures have provided a significant advantage in developing advanced molecular sensors for biomedical and environmental applications. Herein, we introduce the horseradish peroxidase (HRP)-like activity of gold loaded nanoporous ferric oxide nanocubes (Au-NPFe2O3NC) for the development of a molecular sensor with enhanced electrocatalytic and colorimetric (naked-eye) detection of autoantibodies. The results showed that Au-NPFe2O3NC exhibits enhanced peroxidase-like activity towards the catalytic oxidation of 3,3',5,5'-tertamethylbenzidine (TMB) in the presence of H2O2 at room temperature (25°C) and follows the typical Michaelis-Menten kinetics...
September 11, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28891580/facile-fabrication-of-mesoporous-silica-micro-jets-with-multi-functionalities
#18
D Vilela, A C Hortelao, R Balderas-Xicohténcatl, M Hirscher, K Hahn, X Ma, S Sánchez
Self-propelled micro/nano-devices have been proved as powerful tools in various applications given their capability of both autonomous motion and on-demand task fulfilment. Tubular micro-jets stand out as an important member in the family of self-propelled micro/nano-devices and are widely explored with respect to their fabrication and functionalization. A few methods are currently available for the fabrication of tubular micro-jets, nevertheless there is still a demand to explore the fabrication of tubular micro-jets made of versatile materials and with the capability of multi-functionalization...
September 11, 2017: Nanoscale
https://www.readbyqxmd.com/read/28888015/functionalization-of-titanium-dioxide-nanotubes-with-biomolecules-for-biomedical-applications
#19
REVIEW
Weslley F Oliveira, Isabel R S Arruda, Germana M M Silva, Giovanna Machado, Luana C B B Coelho, Maria T S Correia
Titanium (Ti) and its alloys are extensively used in the manufacture of implants because they have biocompatibility. The production of a nanostructured surface can be achieved by means of titanium dioxide nanotubes (TNTs) which can have dimensions equivalent to the nanometric components of human bone, in addition to increasing the efficiency of such implants. The search is ongoing for ways to improve the performance of these TNTs in terms of their functionalization through coating these nanotubular matrices with biomolecules...
December 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28888005/synthesis-mechanical-properties-and-corrosion-behavior-of-powder-metallurgy-processed-fe-mg2si-composites-for-biodegradable-implant-applications
#20
M Sikora-Jasinska, C Paternoster, E Mostaed, R Tolouei, R Casati, M Vedani, D Mantovani
Recently, Fe and Fe-based alloys have shown their potential as degradable materials for biomedical applications. Nevertheless, the slow corrosion rate limits their performance in certain situations. The shift to iron matrix composites represents a possible approach, not only to improve the mechanical properties, but also to accelerate and tune the corrosion rate in a physiological environment. In this work, Fe-based composites reinforced by Mg2Si particles were proposed. The initial powders were prepared by different combinations of mixing and milling processes, and finally consolidated by hot rolling...
December 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
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