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https://www.readbyqxmd.com/read/28820067/a-comprehensive-review-on-ebola-ebov-virus-future-prospects
#1
Dr Abdru Rauf, Muhammad, Abdur Rauf, Ahsan Khan, Muhammad Rizwan, Seema Patel, Haroon Khan, Adel Mahasneh, Mohammad S Mubarak
Ebola virus (EBOV) was discovered for the first time in 1976. It belongs to the family Filoviridae, which causes hemorrhagic fever that could lead to death in a few days. West Africa faced a major outbreak where symptoms appeared in the form of chills, myalgia, fever, diarrhea, and vomiting, and the disease finally reached a severe state as a result of hemorrhagic complications and failure of multiple organs. EBOV spreads by contact with body fluids of an infected person such as blood, saliva, urine, and seminal fluid, and also spreads by a contact with contaminated surfaces...
August 16, 2017: Infectious Disorders Drug Targets
https://www.readbyqxmd.com/read/28817981/the-use-of-flexible-intramedullary-nails-in-limb-lengthening
#2
Arnold Popkov, Patrick Foster, Alexander Gubin, Dmitry Borzunov, Dmitry Popkov
Lower and upper limb length discrepancy and deformity, congenital or acquired, are amongst the most common conditions in children for orthopaedic referral. Over the last twenty years, surgical techniques have evolved in an attempt to decrease Healing Index and minimise these complications. Areas covered: The flexible intramedullary nailing (FIN) is a minimally invasive intramedullary osteosynthesis. In combination with an external fixator, it is appropriated for pediatric bone lengthenings and lengthening of bones of small diameter in adults...
August 18, 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28817715/longitudinal-sequencing-in-intramuscular-coordination-a-new-hypothesis-of-dynamic-functions-in-the-human-rectus-femoris-muscle
#3
Christoph von Laßberg, Julia A Schneid, Dominik Graf, Felix Finger, Walter Rapp, Norman Stutzig
The punctum fixum-punctum mobile model has been introduced in previous publications. It describes general principles of intersegmental neuromuscular succession patterns to most efficiently generate specific movement intentions. The general hypothesis of this study is that these principles-if they really do indicate a fundamental basis for efficient movement generation-should also be found in intramuscular coordination and should be indicated by "longitudinal sequencing" between fibers according to the principles of the punctum fixum-punctum mobile model...
2017: PloS One
https://www.readbyqxmd.com/read/28808688/adaptive-mistranslation-accelerates-the-evolution-of-fluconazole-resistance-and-induces-major-genomic-and-gene-expression-alterations-in-candida-albicans
#4
Tobias Weil, Rodrigo Santamaría, Wanseon Lee, Johan Rung, Noemi Tocci, Darren Abbey, Ana R Bezerra, Laura Carreto, Gabriela R Moura, Mónica Bayés, Ivo G Gut, Attila Csikasz-Nagy, Duccio Cavalieri, Judith Berman, Manuel A S Santos
Regulated erroneous protein translation (adaptive mistranslation) increases proteome diversity and produces advantageous phenotypic variability in the human pathogen Candida albicans. It also increases fitness in the presence of fluconazole, but the underlying molecular mechanism is not understood. To address this question, we evolved hypermistranslating and wild-type strains in the absence and presence of fluconazole and compared their fluconazole tolerance and resistance trajectories during evolution. The data show that mistranslation increases tolerance and accelerates the acquisition of resistance to fluconazole...
July 2017: MSphere
https://www.readbyqxmd.com/read/28808632/survival-rates-against-fracture-of-endodontically-treated-posterior-teeth-restored-with-full-coverage-crowns-or-resin-composite-restorations-a-systematic-review
#5
REVIEW
Warattama Suksaphar, Danuchit Banomyong, Titalee Jirathanyanatt, Yaowaluk Ngoenwiwatkul
This systematic review aims to summarize the current clinical studies that investigated survival rates against fracture of endodontically treated posterior teeth restored with crowns or resin composite restorations. Literature search were performed using keywords. Publications from 1980 to 2016 were searched in PubMed, ScienceDirect, Web of Science, MEDLINE, and SCOPUS. Included studies were selected based on inclusion and exclusion criteria. Three clinical studies were included: 1 randomized controlled trial and 1 prospective and 1 retrospective cohort studies...
August 2017: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/28806528/surface-adaptive-gold-nanoparticles-with-effective-adherence-and-enhanced-photothermal-ablation-of-methicillin-resistant-staphylococcus-aureus-biofilm
#6
Dengfeng Hu, Huan Li, Bailiang Wang, Zi Ye, Wenxi Lei, Fan Jia, Qiao Jin, Ke-Feng Ren, Jian Ji
Biofilms that contribute to the persistent bacterial infections pose serious threats to global public health, mainly due to their resistance to antibiotics penetration and escaping innate immune attacks by phagocytes. Here, we report a kind of surface-adaptive gold nanoparticles (AuNPs) exhibiting (1) a self-adaptive target to the acidic microenvironment of biofilm, (2) an enhanced photothermal ablation of methicillin-resistant Staphylococcus aureus (MRSA) biofilm under near-infrared (NIR) light irradiation, and (3) no damage to the healthy tissues around the biofilm...
August 17, 2017: ACS Nano
https://www.readbyqxmd.com/read/28806147/phase-variation-of-clostridium-difficile-virulence-factors
#7
Brandon R Anjuwon-Foster, Rita Tamayo
Clostridium difficile is a leading cause of nosocomial infections, causing disease that ranges from mild diarrhea to potentially fatal colitis. A variety of surface proteins, including flagella, enable C. difficile colonization of the intestine. Once in the intestine, toxigenic C. difficile secretes two glucosylating toxins, TcdA and TcdB, which elicit inflammation and diarrheal disease symptoms. Regulation of colonization factors and TcdA and TcdB is an intense area of research in C. difficile biology. A recent publication from our group describes a novel regulatory mechanism that mediates the ON/OFF expression of co-regulated virulence factors of C...
August 14, 2017: Gut Microbes
https://www.readbyqxmd.com/read/28805164/modelling-the-spatial-distribution-of-fasciola-hepatica-in-bovines-using-decision-tree-logistic-regression-and-gis-query-approaches-for-brazil
#8
S C Bennema, M B Molento, R G Scholte, O S Carvalho, I Pritsch
Fascioliasis is a condition caused by the trematode Fasciola hepatica. In this paper, the spatial distribution of F. hepatica in bovines in Brazil was modelled using a decision tree approach and a logistic regression, combined with a geographic information system (GIS) query. In the decision tree and the logistic model, isothermality had the strongest influence on disease prevalence. Also, the 50-year average precipitation in the warmest quarter of the year was included as a risk factor, having a negative influence on the parasite prevalence...
August 14, 2017: Parasitology
https://www.readbyqxmd.com/read/28802990/spatio-temporal-variations-in-pm-leaf-deposition-a-meta-analysis
#9
REVIEW
Mengfan Cai, Zhongbao Xin, Xinxiao Yu
Particulate matter (PM) pollution in urban cities is of great concern for public health due to its global and adverse effect of human health while ecosystems function and vegetation control is an effective and eco-friendly way to alleviate PM pollution. We reviewed 150 studies conducted in 15 countries that were published between 1960 and 2016 and used a meta-analysis to examine the time trends and regional differences in leaf deposited PM of urban greening plants. The results suggested that the weekly PM leaf deposition varied markedly with both plant species and space-time and the average value was 1...
August 9, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28800138/phylogenetically-conserved-resource-partitioning-in-the-coastal-microbial-loop
#10
Samuel Bryson, Zhou Li, Francisco Chavez, Peter K Weber, Jennifer Pett-Ridge, Robert L Hettich, Chongle Pan, Xavier Mayali, Ryan S Mueller
Resource availability influences marine microbial community structure, suggesting that population-specific resource partitioning defines discrete niches. Identifying how resources are partitioned among populations, thereby characterizing functional guilds within the communities, remains a challenge for microbial ecologists. We used proteomic stable isotope probing (SIP) and NanoSIMS analysis of phylogenetic microarrays (Chip-SIP) along with 16S rRNA gene amplicon and metagenomic sequencing to characterize the assimilation of six (13)C-labeled common metabolic substrates and changes in the microbial community structure within surface water collected from Monterey Bay, CA...
August 11, 2017: ISME Journal
https://www.readbyqxmd.com/read/28800137/chemical-dispersants-enhance-the-activity-of-oil-and-gas-condensate-degrading-marine-bacteria
#11
Julien Tremblay, Etienne Yergeau, Nathalie Fortin, Susan Cobanli, Miria Elias, Thomas L King, Kenneth Lee, Charles W Greer
Application of chemical dispersants to oil spills in the marine environment is a common practice to disperse oil into the water column and stimulate oil biodegradation by increasing its bioavailability to indigenous bacteria capable of naturally metabolizing hydrocarbons. In the context of a spill event, the biodegradation of crude oil and gas condensate off eastern Canada is an essential component of a response strategy. In laboratory experiments, we simulated conditions similar to an oil spill with and without the addition of chemical dispersant under both winter and summer conditions and evaluated the natural attenuation potential for hydrocarbons in near-surface sea water from the vicinity of crude oil and natural gas production facilities off eastern Canada...
August 11, 2017: ISME Journal
https://www.readbyqxmd.com/read/28799675/biomimetic-implants-for-pelvic-floor-repair
#12
REVIEW
Mahshid Vashaghian, Sebastianus J Zaat, Theodoor H Smit, Jan-Paul Roovers
BACKGROUND: Polypropylene implants are used for the reconstructive surgery of urogynaecological disorders like pelvic organ prolapse, but severe complications associated with their use have been reported. There is evidence that surface properties and a difference in mechanical stiffness between the implant and the host tissue contribute to these adverse events. Electrospinning is an innovative engineering alternative that provides a biomimetic microstructure for implants, resulting in a different mechano-biological performance...
August 11, 2017: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/28796571/the-fate-and-impact-of-internal-waves-in-nearshore-ecosystems
#13
C B Woodson
Internal waves are widespread features of global oceans that play critical roles in mixing and thermohaline circulation. Similarly to surface waves, internal waves can travel long distances, ultimately breaking along continental margins. These breaking waves can transport deep ocean water and associated constituents (nutrients, larvae, and acidic low-oxygen waters) onto the shelf and locally enhance turbulence and mixing, with important effects on nearshore ecosystems. We are only beginning to understand the role internal waves play in shaping nearshore ecosystems...
August 10, 2017: Annual Review of Marine Science
https://www.readbyqxmd.com/read/28794505/differential-transcriptome-of-tolerogenic-versus-inflammatory-dendritic-cells-points-to-modulated-t1d-genetic-risk-and-enriched-immune-regulation
#14
T Nikolic, N J C Woittiez, A van der Slik, S Laban, A Joosten, C Gysemans, C Mathieu, J J Zwaginga, B Koeleman, B O Roep
Tolerogenic dendritic cells (tolDCs) are assessed as immunomodulatory adjuvants to regulate autoimmunity. The underlying gene expression endorsing their regulatory features remains ill-defined. Using deep mRNA sequencing, we compared transcriptomes of 1,25-dihydroxyvitaminD3/dexametasone-modulated tolDCs with that of non-modulated mature inflammatory DCs (mDCs). Differentially expressed genes controlled cellular interactions, metabolic pathways and endorse tolDCs with the capacity to regulate cell activation through nutrient and signal deprivation, collectively gearing tolDCs into tolerogenic immune regulators...
August 10, 2017: Genes and Immunity
https://www.readbyqxmd.com/read/28793176/neutralization-of-pathogenic-fungi-with-small-molecule-immunotherapeutics
#15
Egor Chirkin, Viswanathan Muthusamy, Paul Mann, Terry Roemer, Philippe G Nantermet, David Spiegel
Systemic fungal infections represent an important public health concern, and new antifungal agents are highly desirable. Herein, we describe the design, synthesis and biological evaluation of a novel class of antifungal compounds called Antibody-Recruiting Molecules targeting Fungi (ARM-Fs). Our approach relies on the use of non-peptidic small molecules, which selectively bind fungal cells and recruit endogenous antibodies to their surfaces, resulting in immune-mediated clearance. Using the opportunistic fungal pathogen Candida albicans as a model, we identified a highly specific bifunctional molecule able to mediate the engulfment and phagocytosis of C...
August 9, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28792484/hospital-drains-as-reservoirs-of-pseudomonas-aeruginosa-multiple-locus-variable-number-of-tandem-repeats-analysis-genotypes-recovered-from-faucets-sink-surfaces-and-patients
#16
Cindy Lalancette, Dominique Charron, Céline Laferrière, Patrick Dolcé, Eric Déziel, Michèle Prévost, Emilie Bédard
Identifying environmental sources of Pseudomonas aeruginosa (Pa) related to hospital-acquired infections represents a key challenge for public health. Biofilms in water systems offer protection and favorable growth conditions, and are prime reservoirs of microorganisms. A comparative genotyping survey assessing the relationship between Pa strains recovered in hospital sink biofilm and isolated in clinical specimens was conducted. Environmental strains from drain, faucet and sink-surface biofilm were recovered by a culture method after an incubation time ranging from 48 to 240 h...
August 9, 2017: Pathogens
https://www.readbyqxmd.com/read/28783175/contribution-of-vascular-endothelial-growth-factor-receptor-2-sialylation-to-the-process-of-angiogenesis
#17
P Chiodelli, S Rezzola, C Urbinati, F Federici Signori, E Monti, R Ronca, M Presta, M Rusnati
Vascular endothelial growth factor receptor-2 (VEGFR2) is the main pro-angiogenic receptor expressed by endothelial cells (ECs). Using surface plasmon resonance, immunoprecipitation, enzymatic digestion, immunofluorescence and cross-linking experiments with specific sugar-binding lectins, we demonstrated that VEGFR2 bears both α,1-fucose and α(2,6)-linked sialic acid (NeuAc). However, only the latter is required for VEGF binding to VEGFR2 and consequent VEGF-dependent VEGFR2 activation and motogenic response in ECs...
August 7, 2017: Oncogene
https://www.readbyqxmd.com/read/28783138/flow-cytometric-sorting-coupled-with-exon-capture-sequencing-identifies-somatic-mutations-in-archival-lymphoma-tissues
#18
Nenggang Jiang, Christopher Chen, Qiang Gong, Kristen Shields, Yuping Li, YuanYuan Chen, Joo Song, Timothy W McKeithan, Wing C Chan
The enormous number of archived formalin-fixed paraffin-embedded (FFPE) tissues available are a valuable resource of material for research. However, the use of such tissues poses many challenges, among which is the difficulty of isolating different cell populations within the tissue. In this study, we used tissue from two types of non-Hodgkin lymphoma as a model to demonstrate a method we have established and optimized to separate FFPE samples into distinct tumor and nonmalignant populations. Using FFPE reactive tonsil sections, various approaches for antigen retrieval and labeling, and the effectiveness of flow cytometric sorting were tested...
August 7, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28783077/characterization-of-reconstructed-ancestral-proteins-suggests-a-change-in-temperature-of-the-ancient-biosphere
#19
REVIEW
Satoshi Akanuma
Understanding the evolution of ancestral life, and especially the ability of some organisms to flourish in the variable environments experienced in Earth's early biosphere, requires knowledge of the characteristics and the environment of these ancestral organisms. Information about early life and environmental conditions has been obtained from fossil records and geological surveys. Recent advances in phylogenetic analysis, and an increasing number of protein sequences available in public databases, have made it possible to infer ancestral protein sequences possessed by ancient organisms...
August 6, 2017: Life
https://www.readbyqxmd.com/read/28782757/osthole-treatment-ameliorates-th2-mediated-allergic-asthma-and-exerts-immunomodulatory-effects-on-dendritic-cell-maturation-and-function
#20
Chen-Yuan Chiang, Chen-Chen Lee, Chia-Kwung Fan, Huei-Mei Huang, Bor-Luen Chiang, Yueh-Lun Lee
Osthole, an active component of Chinese herbal medicines, reportedly possesses various pharmacological properties and has potential therapeutic applications. This study explored the anti-allergic effects of osthole in asthmatic mice and investigated the immunomodulatory actions of osthole on dendritic cells (DCs) and T cells. Herein, we show that oral administration of osthole to BALB/c mice after ovalbumin (OVA) sensitization ameliorated all of the cardinal features of T helper 2 (Th2)-mediated allergic asthma; namely, the production of OVA-specific immunoglobulin E, airway hyperresponsiveness, airway inflammation and the production of Th2-type cytokines including interleukin (IL)-4, IL-5 and IL-13...
August 7, 2017: Cellular & Molecular Immunology
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