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https://www.readbyqxmd.com/read/29156823/differential-activation-of-fyn-kinase-distinguishes-saturated-and-unsaturated-fats-in-mouse-macrophages
#1
Elena Tarabra, Ting-Wen An Lee, Victor A Zammit, Manu Vatish, Eijiro Yamada, Jeffrey E Pessin, Claire C Bastie
Diet-induced obesity is associated with increased adipose tissue activated macrophages. Yet, how macrophages integrate fatty acid (FA) signals remains unclear. We previously demonstrated that Fyn deficiency (fynKO) protects against high fat diet-induced adipose tissue macrophage accumulation. Herein, we show that inflammatory markers and reactive oxygen species are not induced in fynKO bone marrow-derived macrophages exposed to the saturated FA palmitate, suggesting that Fyn regulates macrophage function in response to FA signals...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156796/downregulation-of-dna-repair-proteins-and-increased-dna-damage-in-hypoxic-colon-cancer-cells-is-a-therapeutically-exploitable-vulnerability
#2
Jennifer M J Jongen, Lizet M van der Waals, Kari Trumpi, Jamila Laoukili, Niek A Peters, Susanne J Schenning-van Schelven, Klaas M Govaert, Inne H M Borel Rinkes, Onno Kranenburg
Surgical removal of colorectal cancer (CRC) liver metastases generates areas of tissue hypoxia. Hypoxia imposes a stem-like phenotype on residual tumor cells and promotes tumor recurrence. Moreover, in primary CRC, gene expression signatures reflecting hypoxia and a stem-like phenotype are highly expressed in the aggressive Consensus Molecular Subtype 4 (CMS4). Therapeutic strategies eliminating hypoxic stem-like cells may limit recurrence following resection of primary tumors or metastases. Here we show that expression of DNA repair genes is strongly suppressed in CMS4 and inversely correlated with hypoxia-inducible factor-1 alpha (HIF1α) and HIF-2α co-expression signatures...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156630/anti-bacteria-and-microecosystem-regulating-effects-of-dental-implant-coated-with-dimethylaminododecyl-methacrylate
#3
Bolei Li, Yang Ge, Yao Wu, Jing Chen, Hockin H K Xu, Minggang Yang, Mingyun Li, Biao Ren, Mingye Feng, Michael D Weir, Xian Peng, Lei Cheng, Xuedong Zhou
The effects of dimethylaminododecyl methacrylate (DMADDM) modified titanium implants on bacterial activity and microbial ecosystem of saliva-derived biofilm were investigated for the first time. Titanium discs were coated with DMADDM solutions at mass fractions of 0 mg/mL (control), 1, 5 and 10 mg/mL, respectively. Biomass accumulation and metabolic activity of biofilms were tested using crystal violet assay and MTT (3-(4,5-Dimethyl-thiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay. 16S rRNA gene sequencing was performed to measure the microbial community...
November 20, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29156628/-differentially-expressed-trna-derived-small-rnas-co-sediment-primarily-with-non-polysomal-fractions-in-drosophila
#4
Çağdaş Göktaş, Hatice Yiğit, Mehmet İlyas Coşacak, Bünyamin Akgül
Recent studies point to the existence of poorly characterized small regulatory RNAs generated from mRNAs, rRNAs and tRNAs. To explore the subcellular location of tRNA-derived small RNAs, 0-1 and 7-8 h Drosophila embryos were fractionated on sucrose density gradients. Analysis of 12,553,921 deep-sequencing reads from unfractionated and fractionated Drosophila embryos has revealed that tRFs, which are detected mainly from the 5'ends of tRNAs, co-sediment with the non-polysomal fractions. Interestingly, the expression levels of a subset of tRFs change temporally following the maternal-to-zygotic transition in embryos...
November 20, 2017: Genes
https://www.readbyqxmd.com/read/29156552/diversity-of-dsdna-viruses-in-a-south-african-hot-spring-assessed-by-metagenomics-and-microscopy
#5
Olivier Zablocki, Leonardo Joaquim van Zyl, Bronwyn Kirby, Marla Trindade
The current view of virus diversity in terrestrial hot springs is limited to a few sampling sites. To expand our current understanding of hot spring viral community diversity, this study aimed to investigate the first African hot spring (Brandvlei hot spring; 60 °C, pH 5.7) by means of electron microscopy and sequencing of the virus fraction. Microscopy analysis revealed a mixture of regular- and 'jumbo'-sized tailed morphotypes (Caudovirales), lemon-shaped virions (Fuselloviridae-like; salterprovirus-like) and pleiomorphic virus-like particles...
November 18, 2017: Viruses
https://www.readbyqxmd.com/read/29156345/the-extended-production-of-uv-induced-reactive-oxygen-species-in-l929-fibroblasts-is-attenuated-by-posttreatment-with-arrabidaea-chica-through-scavenging-mechanisms
#6
Fabianne Martins Ribeiro, Hélito Volpato, Danielle Lazarin-Bidóia, Vânia Cristina Desoti, Rebeca Oliveira de Souza, Maria José Vieira Fonseca, Tânia Ueda-Nakamura, Celso Vataru Nakamura, Sueli de Oliveira Silva
Ultraviolet radiation (UVR) exposure causes various injurious effects to human skin by generating reactive oxygen species (ROS). Excessive ROS production can lead to oxidative stress which may damage cellular components like lipids and proteins and causing photoaging. The use of natural photochemopreventive agents with antioxidant properties is an important alternative to improve the effectiveness of sunscreens and reduce skin photodamage. A crude extract (CE) from the leaves of Arrabidaea chica underwent partition by a liquid-liquid method...
November 17, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29156269/autotrophic-denitrification-supported-by-biotite-dissolution-in-crystalline-aquifers-2-transient-mixing-and-denitrification-dynamic-during-long-term-pumping
#7
Clément Roques, Luc Aquilina, Alexandre Boisson, Virginie Vergnaud-Ayraud, Thierry Labasque, Laurent Longuevergne, Marc Laurencelle, Alexis Dufresne, Jean-Raynald de Dreuzy, Hélène Pauwels, Olivier Bour
We investigated the mixing and dynamic of denitrification processes induced by long-term pumping in the crystalline aquifer of Ploemeur (Brittany, France). Hydrological and geochemical parameters have been continuously recorded over 15 boreholes in 5km(2) on a 25-year period. This extensive spatial and temporal monitoring of conservative as well as reactive compounds is a key opportunity to identify aquifer-scale transport and reactive processes in crystalline aquifers. Time series analysis of the conservative elements recorded at the pumped well were used to determine mixing fractions from different compartments of the aquifer on the basis of a Principal Component Analysis approach coupled with an end-member mixing analysis...
November 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29156245/changes-in-activities-of-both-photosystems-and-the-regulatory-effect-of-cyclic-electron-flow-in-field-grown-cotton-gossypium-hirsutum-l-under-water-deficit
#8
Xiao-Ping Yi, Ya-Li Zhang, He-Sheng Yao, Ji-Mei Han, Wah Soon Chow, Da-Yong Fan, Wang-Feng Zhang
To clarify the influence of water deficit on the functionality of the photosynthetic apparatus of cotton plants, leaf gas exchange, chlorophyll a fluorescence, and P700 redox state were examined in field-grown cotton Gossypium hirsutum L. cv. Xinluzao 45. In addition, we measured changes in the P515 signal and analyzed the activity of ATP synthase and the trans-thylakoid proton gradient (ΔpH). With increasing water deficit, the net CO2 assimilation rate (AN) and stomatal conductance (gs) significantly decreased, but the maximum quantum efficiency of PSII photochemistry (Fv/Fm) did not change...
November 10, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/29156149/quantitative-evaluation-of-vertebral-microvascular-permeability-and-fat-fraction-in-alloxan-induced-diabetic-rabbits
#9
Lei Hu, Yun Fei Zha, Li Wang, Liang Li, Dong Xing, Wei Gong, Jiao Wang, Yuan Lin, Fei Fei Zeng, Xue Song Lu
Purpose To determine longitudinal relationships between lumbar vertebral bone marrow permeability and marrow adipose tissue in a rabbit diabetes model by using quantitative dynamic contrast agent-enhanced (DCE) magnetic resonance (MR) imaging and iterative decomposition of water and fat with the echo asymmetry and least-squares estimation quantitation (IDEAL IQ) sequence. Materials and Methods Twenty rabbits were randomly assigned to the diabetic (n = 10) or control (n = 10) group. All rabbits underwent sagittal MR imaging of the lumbar region at fixed time points (0, 4, 8, 12, and 16 weeks after alloxan injection)...
November 20, 2017: Radiology
https://www.readbyqxmd.com/read/29156145/fractional-flow-reserve-estimated-at-coronary-ct-angiography-in-intermediate-lesions-comparison-of-diagnostic-accuracy-of-different-methods-to-determine-coronary-flow-distribution
#10
Satoru Kishi, Andreas A Giannopoulos, Anji Tang, Nahoko Kato, Yiannis S Chatzizisis, Carole Dennie, Yu Horiuchi, Kengo Tanabe, João A C Lima, Frank J Rybicki, Dimitris Mitsouras
Purpose To compare the diagnostic accuracy of different computed tomographic (CT) fractional flow reserve (FFR) algorithms for vessels with intermediate stenosis. Materials and Methods This cross-sectional HIPAA-compliant and human research committee-approved study applied a four-step CT FFR algorithm in 61 patients (mean age, 69 years ± 10; age range, 29-89 years) with a lesion of intermediate-diameter stenosis (25%-69%) at CT angiography who underwent FFR measurement within 90 days. The per-lesion diagnostic performance of CT FFR was tested for three different approaches to estimate blood flow distribution for CT FFR calculation...
November 20, 2017: Radiology
https://www.readbyqxmd.com/read/29156124/definition-of-free-o-h-groups-of-water-at-the-air-water-interface
#11
Fujie Tang, Tatsuhiko Ohto, Taisuke Hasegawa, Wen Jun Xie, Limei Xu, Mischa Bonn, Yuki Nagata
Free O-H groups of water are often found at the water-hydrophobic medium interface, e.g. for water contact with hydrophobic protein residues, or at the water-air interface. In surface-specific vibrational spectroscopic studies using sum-frequency generation (SFG) spectroscopy, free O-H groups are experimentally well characterized in the O-H stretch region by a sharp 3700 cm(-1) peak. Although these free O-H groups are often defined as the O-H groups which are not hydrogen-bonded to other water molecules, a direct correlation between such non-hydrogen-bonded O-H group and the 3700 cm(-1) SFG response has been lacking...
November 20, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/29156068/lmwf-5a-for-the-treatment-of-severe-osteoarthritis-of-the-knee-integrated-analysis-of-safety-and-efficacy
#12
Brian Cole, Brian McGrath, Kristin Salottolo, David Bar-Or
The low-molecular-weight fraction of 5% human serum albumin (LMWF-5A) is being developed to treat the signs and symptoms of severe osteoarthritis of the knee. This study was a post hoc pooled analysis of 3 randomized placebo-controlled trials of a single intra-articular injection of LMWF-5A, focusing on the subset of patients with severe osteoarthritis of the knee (Kellgren-Lawrence grade 4). Patients were randomized 1:1 to receive a single 4-mL intra-articular knee injection of either LMWF-5A or saline. Safety was assessed as the incidence and severity of adverse events...
November 20, 2017: Orthopedics
https://www.readbyqxmd.com/read/29156053/propensity-matched-analysis-of-outcomes-after-mitral-valve-surgery-between-trainees-and-consultants-institutional-report
#13
Vito D Bruno, Pierpaolo Chivasso, Amna Hayat, Roberto Marsico, Umberto Benedetto, Massimo Caputo, Raimondo Ascione, Gianni D Angelini, Franco Ciulli, Hunaid A Vohra
OBJECTIVES: We aimed to determine whether early outcomes and long-term survival after mitral valve surgery performed by trainee residents are equivalent in terms of safety and efficacy when compared with consultant surgeons. METHODS: Between January 2000 and December 2015, a total of 1742 patients who underwent mitral valve surgery were identified. Of these, 1622 operations were performed by consultants (Group I) and 120 operations were performed by trainees (Group II)...
November 16, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29156019/the-aspartate-transaminase-alanine-transaminase-deritis-ratio-predicts-mid-term-mortality-and-renal-and-respiratory-dysfunction-after-left-ventricular-assist-device-implantation
#14
Kevin Pilarczyk, Henning Carstens, Jens Heckmann, Ali Canbay, Achim Koch, Nikolaus Pizanis, Heinz Jakob, Markus Kamler
OBJECTIVES: Preoperative liver dysfunction is a well-known risk factor for adverse events after major surgery. However, there is only little data regarding the precise role of the Model of End-Stage Liver Disease (MELD) score and the De Ritis ratio (DRR, alanine transaminase/aspartate aminotransferase) as a predictor for outcome after left ventricular assist device (LVAD) implantation. METHODS: A retrospective analysis of all patients undergoing LVAD implantation at our institution between January 2012 and August 2014 was performed...
October 1, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29156004/obesity-modulates-the-association-between-systolic-blood-pressure-and-albuminuria
#15
James Fotheringham, Bisher Kawar, William McKane, Timothy Ellam
Background: Obesity is associated with albuminuria and incident kidney disease. Increased vulnerability of the glomerular microcirculation to elevated systemic blood pressure is postulated to contribute to adverse effects of obesity on the kidney. We therefore hypothesized that obesity would modulate the association between systolic blood pressure (sBP) and albuminuria. Methods: The relationship between obesity and albuminuria [fractional albumin excretion (FE alb ) or albumin:creatinine ratio (ACR)] was modelled using linear/logistic regression in the US National Health and Nutrition Examination Survey 1999-2010 cohorts ( N  = 23 710)...
May 30, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29155875/effect-of-long-term-irrigation-patterns-on-phosphorus-forms-and-distribution-in-the-brown-soil-zone
#16
Chang Liu, Xiuli Dang, Melanie A Mayes, Leilei Chen, Yulong Zhang
Continuous application of P fertilizers under different irrigation patterns can change soil phosphorus (P) chemical behavior and increase soil P levels that are of environmental concern. To assess the effect of long-term different irrigation patterns on soil P fractions and availability, this study examined sequential changes in soil organic P and inorganic P from furrow irrigation (FI), surface drip irrigation (SUR), and subsurface drip irrigation (SDI) in the brown soil zone (0-60 cm) during 1998 to 2011...
2017: PloS One
https://www.readbyqxmd.com/read/29155862/a-multi-paradigm-framework-to-assess-the-impacts-of-climate-change-on-end-use-energy-demand
#17
Roshanak Nateghi, Sayanti Mukherjee
Projecting the long-term trends in energy demand is an increasingly complex endeavor due to the uncertain emerging changes in factors such as climate and policy. The existing energy-economy paradigms used to characterize the long-term trends in the energy sector do not adequately account for climate variability and change. In this paper, we propose a multi-paradigm framework for estimating the climate sensitivity of end-use energy demand that can easily be integrated with the existing energy-economy models...
2017: PloS One
https://www.readbyqxmd.com/read/29155861/pancreatic-exocrine-insufficiency-in-patients-with-chronic-heart-failure-and-its-possible-association-with-appetite-loss
#18
Tingting Xia, Xichen Chai, Jiaqing Shen
BACKGROUND: Appetite loss is one complication of chronic heart failure (CHF), and its association with pancreatic exocrine insufficiency (PEI) is not well investigated in CHF. AIM: We attempted to detect the association between PEI and CHF-induced appetite. METHODS: Patients with CHF were enrolled, and body mass index (BMI), left ventricular ejection fraction (LVEF), New York Heart Association (NYHA) cardiac function grading, B-type natriuretic peptide (BNP), serum albumin, pro-albumin and hemoglobin were evaluated...
2017: PloS One
https://www.readbyqxmd.com/read/29155834/measuring-the-microbiome-of-chronic-wounds-with-use-of-a-topical-antimicrobial-dressing-a-feasibility-study
#19
Lindsay Kalan, Mi Zhou, Michele Labbie, Benjamin Willing
BACKGROUND: Polymicrobial communities colonize all wounds, and biofilms are hypothesized to be a key link to the chronic state and stalled healing. Molecular methods offer greater insight when studying microbial ecology in chronic wounds, as only a small fraction of wound bacteria are cultured by currently available methods and studies have shown little agreement between culture and molecular based approaches. Some interventions, like dressings with oxidized silver, are reported to help the stalled wounds move to a normal healing trajectory but the underlying mechanisms are difficult to measure...
2017: PloS One
https://www.readbyqxmd.com/read/29155710/dna-nanotubes-as-a-versatile-tool-to-study-semiflexible-polymers
#20
Jörg Schnauß, Martin Glaser, Jessica S Lorenz, Carsten Schuldt, Christin Möser, Martin Sajfutdinow, Tina Händler, Josef A Käs, David M Smith
Mechanical properties of complex, polymer-based soft matter, such as cells or biopolymer networks, can be understood in neither the classical frame of flexible polymers nor of rigid rods. Underlying filaments remain outstretched due to their non-vanishing backbone stiffness, which is quantified via the persistence length (lp), but they are also subject to strong thermal fluctuations. Their finite bending stiffness leads to unique, non-trivial collective mechanics of bulk networks, enabling the formation of stable scaffolds at low volume fractions while providing large mesh sizes...
October 25, 2017: Journal of Visualized Experiments: JoVE
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