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https://www.readbyqxmd.com/read/27935965/bypass-of-candida-albicans-filamentation-biofilm-regulators-through-diminished-expression-of-protein-kinase-cak1
#1
Carol A Woolford, Katherine Lagree, Wenjie Xu, Tatyana Aleynikov, Hema Adhikari, Hiram Sanchez, Paul J Cullen, Frederick Lanni, David R Andes, Aaron P Mitchell
Biofilm formation on implanted medical devices is a major source of lethal invasive infection by Candida albicans. Filamentous growth of this fungus is tied to biofilm formation because many filamentation-associated genes are required for surface adherence. Cell cycle or cell growth defects can induce filamentation, but we have limited information about the coupling between filamentation and filamentation-associated gene expression after cell cycle/cell growth inhibition. Here we identified the CDK activating protein kinase Cak1 as a determinant of filamentation and filamentation-associated gene expression through a screen of mutations that diminish expression of protein kinase-related genes implicated in cell cycle/cell growth control...
December 2016: PLoS Genetics
https://www.readbyqxmd.com/read/27928941/molecular-dynamics-analysis-of-the-structural-and-dynamic-properties-of-the-functionally-enhanced-hepta-variant-of-mouse-5-aminolevulinate-synthase
#2
Insung Na, Shelly DeForte, Bosko M Stojanovski, Gloria C Ferreira, Vladimir N Uversky
Heme biosynthesis, a complex, multistage, and tightly controlled process, starts with 5-aminolevulinate (ALA) production, which, in metazoa and certain bacteria, is a reaction catalyzed by 5-aminolevulinate synthase (ALAS), a pyridoxal 5'-phosphate (PLP)-dependent enzyme. Functional aberrations in ALAS are associated with several human diseases. ALAS can adopt open and closed conformations, with segmental rearrangements of a C-terminal, 16-amino acid loop and an α-helix regulating accessibility to the ALAS active site...
December 8, 2016: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/27920123/selective-enhancement-of-insulin-sensitivity-in-the-endothelium-in-vivo-reveals-a-novel-proatherosclerotic-signalling-loop
#3
Hema Viswambharan, Nadira Y Yuldasheva, Anshuman Sengupta, Helen Imrie, Matthew C Gage, Natalie J Haywood, Andrew M Walker, Anna Skromna, Natalia Makova, Stacey L Galloway, Pooja Shah, Piruthivi Sukumar, Karen E Porter, Peter J Grant, Ajay M Shah, Celio X Santos, Jing Li, David J Beech, Stephen Wheatcroft, Richard M Cubbon, Mark T Kearney
RATIONALE: In the endothelium, insulin stimulates endothelial nitric oxide synthase (eNOS) to generate the anti-atherosclerotic signalling radical NO. Insulin resistant type 2 diabetes is associated with reduced NO availability and accelerated atherosclerosis. The effect of enhancing endothelial insulin sensitivity on NO availability is unclear. OBJECTIVE: To answer this question we generated a mouse with endothelial cell (EC)-specific over-expression of the human insulin receptor (hIRECO) using the Tie2 promoter-enhancer...
December 5, 2016: Circulation Research
https://www.readbyqxmd.com/read/27916927/vitamin-b12-status-among-pregnant-women-in-the-uk-and-its-association-with-obesity-and-gestational-diabetes
#4
Nithya Sukumar, Hema Venkataraman, Sean Wilson, Ilona Goljan, Selvin Selvamoni, Vinod Patel, Ponnusamy Saravanan
BACKGROUND: To evaluate vitamin B12 and folate status in pregnancy and their relationship with maternal obesity, gestational diabetes mellitus (GDM), and offspring birthweight. METHODS: A retrospective case-control study of 344 women (143 GDM, 201 no-GDM) attending a district general hospital and that had B12 and folate levels measured in the early 3rd trimester was performed. Maternal history including early pregnancy body mass index (BMI) and neonatal data (birthweight, sex, and gestational age) was recorded for all subjects...
December 1, 2016: Nutrients
https://www.readbyqxmd.com/read/27913848/increased-fetal-adiposity-prior-to-diagnosis-of-gestational-diabetes-in-south-asians-more-evidence-for-the-thin-fat-baby
#5
Hema Venkataraman, Uma Ram, Sam Craik, Anuradhai Arungunasekaran, Suresh Seshadri, Ponnusamy Saravanan
AIMS/HYPOTHESIS: Gestational diabetes mellitus (GDM) is associated with an increased future risk of obesity in the offspring. Increased adiposity has been observed in the newborns of women with GDM. Our aim was to examine early fetal adiposity in women with GDM. METHODS: Obstetric and sonographic data was collated for 153 women with GDM and 178 controls from a single centre in Chennai, India. Fetal head circumference (HC), abdominal circumference (AC), femur length (FL) and biparietal diameter (BPD) were recorded at 11, 20 and 32 weeks...
December 2, 2016: Diabetologia
https://www.readbyqxmd.com/read/27913050/congenital-high-airway-obstruction-syndrome-chaos-a-perinatal-autopsy-case-report
#6
Manasi Gosavi, Lalit Kumar, Ashwini Ratnakar, Hema Bannur
INTRODUCTION: Congenital High Airway Obstruction Syndrome (CHAOS) is a rare anomaly where a partial or complete obstruction of upper airway is seen. As a consequence, the foetus develops enlarged lungs, inverted or flattened diaphragm and ascites. The pathological findings in a case of CHAOS is presented. CASE REPORT: A 28-year-old primigravida presented with a history of 5 months of amenorrhoea. Ultrasonography revealed enlarged echogenic lungs, cardiac mid-position, inverted diaphragm, foetal ascites and talipes of left foot...
October 26, 2016: Pathology, Research and Practice
https://www.readbyqxmd.com/read/27906095/resveratrol-and-acetyl-resveratrol-modulate-activity-of-vegf-and-il-8-in-ovarian-cancer-cell-aggregates-via-attenuation-of-the-nf-%C3%AE%C2%BAb-protein
#7
Alexandria B Tino, Kenny Chitcholtan, Peter H Sykes, Ashley Garrill
BACKGROUND: Key features of advanced ovarian cancer include metastasis via cell clusters in the abdominal cavity and increased chemoresistance. Resveratrol and derivatives of resveratrol have been shown to have antitumour properties. The purpose of this study was to investigate the effect of resveratrol and acetyl-resveratrol on 3D cell aggregates of ovarian cancer, and establish if NF-κB signalling may be a potential target. METHODS: Poly-HEMA coated wells were used to produce 3D aggregates of two ovarian cancer cell lines, SKOV-3 and OVCAR-5...
December 1, 2016: Journal of Ovarian Research
https://www.readbyqxmd.com/read/27904089/structure-cytotoxicity-relationship-of-methacrylate-based-resin-monomers-as-evaluated-by-an-anti-oxidant-responsive-element-luciferase-reporter-assay
#8
Miki Egashira, Takahiro Suzuki, Ai Orimoto, Tohru Obata, Hiroshi Nakamura, Motohiro Tanaka, Takao Kanamori, Tatsushi Kawai
To investigate the chemical structure-cytotoxicity relationship of methacrylate-based resin monomers, we studied their effects on anti-oxidant responsive element (ARE)-mediated transcription. HepG2 cells stably expressing an ARE-regulated luciferase reporter gene were cultured for 6 h with various concentrations of several resin monomers and subjected to a luciferase assay. The doseresponse curves observed for hydrophobic monomers with different hydrocarbon chains (MMA, EMA, PMA and BMA) began to rise at concentrations between 0...
2016: Dental Materials Journal
https://www.readbyqxmd.com/read/27898982/evaluation-of-corneal-cross-linking-for-treatment-of-fungal-keratitis-using-confocal-laser-scanning-microscopy-on-an-ex-vivo-human-corneal-model
#9
Jawaher M Alshehri, David Caballero-Lima, M Chantal Hillarby, Susan G Shawcross, Arun Brahma, Fiona Carley, Nick D Read, Hema Radhakrishnan
Purpose: Some previous reports have established the use of photoactivated chromophore-induced corneal cross-linking (PACK-CXL) in treating fungal keratitis. The results of these case reports have often been conflicting. To systematically study the effect of PACK-CXL in the management of Fusarium keratitis, we have developed an ex vivo model of human corneal infection using eye-banked human corneas. Methods: Sixteen healthy ex vivo human corneas were divided into four study groups: (1) untreated control, (2) cross-linked, (3) infected with fungal spores, and (4) infected with fungal spores and then cross-linked...
November 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27891482/treatment-emergent-agranulocytosis-with-skin-and-gingival-lesions-in-a-chronic-lymphocytic-leukemia-patient-a-case-report
#10
Ramesh Amirisetty, Varun Zade, Meenakshi Boddun, Rolly Gupta, Micky Kumari, Hema Suryawanshi
Chronic Lymphocytic Leukaemia (CLL) is a monoclonal lymphoid malignancy characterized by progressive accumulation of small, mature but functionally incompetent neoplastic lymphocytes in the peripheral blood, bone marrow and lymphoid organs. Patients present a variable course and may not require early intervention unlike other malignancies. Patients with rapidly deteriorating blood counts, and organomegaly need treatment. Alkylating agent live Bendamustine combined with Rituximab, anti-CD 20 monoclonal antibody have shown promising results in such patients...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27887776/critical-role-of-superoxide-anions-and-hydroxyl-radicals-in-hema-induced-apoptosis
#11
H Schweikl, M Godula, C Petzel, C Bolay, K A Hiller, W Buchalla
OBJECTIVE: Resin monomers such as 2-hydroxyethyl methacrylate (HEMA) induce apoptosis because of the excess formation of reactive oxygen species (ROS). The portion of ROS including superoxide anions, hydrogen peroxide or hydroxyl radicals in monomer-induced apoptosis is unknown. Here, the effectiveness of superoxide anions or hydroxyl radicals was analyzed using tempol or sodium formate as radical scavengers. METHODS: RAW264.7 mouse macrophages were exposed to HEMA (0-6-8mM) in the presence of tempol (0-0...
November 22, 2016: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/27875051/clinical-significance-of-bis-gma-and-hema-orthodontic-resins-bonding-to-enamel-and-ceramic-materials
#12
Timothy Reichheld, Gregory Monfette, Ronald D Perry, Matthew Finkelman, Eric Gheewalla, Gerard Kugel
The advancement of new ceramic materials for dental crowns has prompted the need for improved methods of bonding orthodontic brackets to these surfaces. Currently, lithium-disilicate is the primary material being used for anterior crowns, while zirconia is the primary material being used in the posterior. The purpose of this study was to compare the shear bond strength of HEMA (Assure® Universal Bonding Resin) and bis-GMA (Assure® PLUS All Surface Bonding Resin) orthodontic bonding resins on enamel, lithium-disilicate, and zirconia materials...
November 2016: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/27873112/influence-of-polymer-composition-on-the-sensitivity-towards-nitrite-and-nitric-oxide-of-colorimetric-disposable-test-strips
#13
Víctor Fabregat, M Isabel Burguete, Francisco Galindo, Santiago V Luis
The influence of polymer composition on the sensitivity towards nitrite (NO2(-)) and nitric oxide (NO) of a series of 19 polymeric hydrogel films has been studied. The polymers, based on the hydrophilic monomer 2-hydroxyethylmethacrylate (HEMA), are able to encapsulate the colorimetric indicator 1,2-diaminoanthraquinone (DAQ) and to respond to NO2(-) and NO by visual changes. In the case of nitrite, the calculated limits of detection (LOD) for two of the polymeric sensors (10 μM) are very close to the sensitivity estimated for free DAQ in solution (LOD 5 μM), but with the advantage of a solid supported sensor with the format of a disposable test-strip made with affordable starting chemicals...
November 21, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27872090/mutational-landscape-of-pediatric-acute-lymphoblastic-leukemia
#14
LingWen Ding, Qiao-Yang Sun, Kar-Tong Tan, Wenwen Chien, Anand Mayakonda Thippeswamy, Allen Yeoh Eng Juh, Norihiko Kawamata, Yasunobu Nagata, Jin-Fen Xiao, Xin-Yi Loh, De-Chen Lin, Manoj Garg, Su-Lin Lim, Li-Zhen Liu, Vikas Madan, Yan-Yi Jiang, Liang Xu, Masashi Sanada, Lucia Torres Fernández, Hema Preethi, Michael Lill, Hagop Kantarjian, S M Kornblau, Satoru Miyano, Seishi Ogawa, Der-Cherng Liang, Lee-Yung Shih, Henry Yang, H Phillip Koeffler
Current standard of care for patients with pediatric acute lymphoblastic leukemia (ALL) is mainly effective, with high remission rates after treatment. However, the genetic perturbations that give rise to this disease remain largely undefined, limiting the ability to address resistant tumors or develop less toxic targeted therapies. Here we report the use of next generation sequencing to interrogate the genetic and pathogenic mechanisms of 240 pediatric ALL cases with their matched remission samples. Commonly mutated genes fell into several categories, including RAS/receptor tyrosine kinases, epigenetic regulators, transcription factors involved in lineage commitment and the p53/cell cycle pathway...
November 21, 2016: Cancer Research
https://www.readbyqxmd.com/read/27869252/resin-dentin-bond-stability-of-experimental-4-meta-based-etch-and-rinse-adhesives-solvated-by-ethanol-or-acetone
#15
Cristiane Mariote Amaral, Alice Marques Diniz, Eugênio Braz Rodrigues Arantes, Glauco Botelho Dos Santos, Jaime Dutra Noronha-Filho, Eduardo Moreira da Silva
PURPOSE: To investigate the influence of 4-META concentration and type of solvent on the degree of conversion (DC%) and resin-dentin bond stability of experimental etch-and-rinse adhesives. MATERIALS AND METHODS: Four different concentrations of 4-META (12 wt%, 20 wt%, 30 wt%, 40 wt%) were added to a model adhesive system consisting of TEG-DMA (25 wt%), UDMA (20 wt%), HEMA (30 wt%), water (4 wt%), camphorquinone (0.5 wt%), and tertiary amine (0.5 wt%) dissolved in 20% acetone (A12, A20, A30 and A40) or 20% ethanol (E12, E20, E30 and E40)...
November 18, 2016: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/27863669/uv-curable-gels-as-topical-nail-medicines-in-vivo-residence-anti-fungal-efficacy-and-influence-of-gel-components-on-their-properties
#16
L V Kerai, S Hilton, M Maugueret, B B Kazi, J Faull, S Bhakta, S Murdan
UV-curable gels, used as nail cosmetics for their in vivo durability, were reported to be promising as topical nail medicines. Our first aim was thus to investigate whether such durability applies to drug-loaded formulations. This was found to be true. However, ethanol inclusion in the pharmaceutical formulation (to enable drug loading) reduced the in vivo residence. The second aim was therefore to determine any other effects of ethanol, and if ethanol could be avoided by the choice of monomers. Thus, three methacrylate monomers, ethyl methacrylate, isobornyl methacrylate and 2-hydroxyethyl methacrylate (HEMA) were selected, and their influence on the formulation properties were determined...
November 30, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27862996/tannic-acid-inhibits-egfr-stat1-3-and-enhances-p38-stat1-signalling-axis-in-breast-cancer-cells
#17
Pramod Darvin, Youn Hee Joung, Dong Young Kang, Nipin Sp, Hyo Joo Byun, Tae Sook Hwang, Hema Sasidharakurup, Chi Ho Lee, Kwang Hyun Cho, Kyung Do Park, Hak Kyo Lee, Young Mok Yang
Tannic acid (TA), a naturally occurring polyphenol, is a potent anti-oxidant with anti-proliferative effects on multiple cancers. However, its ability to modulate gene-specific expression of tumour suppressor genes and oncogenes has not been assessed. This work investigates the mechanism of TA to regulate canonical and non-canonical STAT pathways to impose the gene-specific induction of G1-arrest and apoptosis. Regardless of the p53 status and membrane receptors, TA induced G1-arrest and apoptosis in breast cancer cells...
November 15, 2016: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/27849621/vancomycin-induced-thrombocytopenia-in-a-newborn
#18
Kunal Kalra, Hema Gupta Mittal, Arti Maria
Neonatal thrombocytopenia is common and is frequently seen in neonatal sepsis. Drug-induced thrombocytopenia is likely to be missed unless a high index of suspicion is present. Changing of antibiotics for assumed nonresolution of sepsis may lead to persistent thrombocytopenia in a neonate if drug-induced thrombocytopenia is missed. Vancomycin-induced neonatal thrombocytopenia is rarely described in scientific literature. We describe a newborn who was diagnosed with early onset sepsis and vancomycin-induced thrombocytopenia...
December 1, 2016: Drug Metabolism and Personalized Therapy
https://www.readbyqxmd.com/read/27845027/clinical-effectiveness-and-cost-effectiveness-of-use-of-therapeutic-monitoring-of-tumour-necrosis-factor-alpha-tnf-%C3%AE-inhibitors-lisa-tracker%C3%A2-enzyme-linked-immunosorbent-assay-elisa-kits-tnf-%C3%AE-blocker-elisa-kits-and-promonitor%C3%A2-elisa-kits-versus-standard-care
#19
Karoline Freeman, Martin Connock, Peter Auguste, Sian Taylor-Phillips, Hema Mistry, Deepson Shyangdan, Rachel Court, Ramesh Arasaradnam, Paul Sutcliffe, Aileen Clarke
BACKGROUND AND OBJECTIVES: Systematic reviews and economic modelling of clinical effectiveness and cost-effectiveness of therapeutic monitoring of tumour necrosis factor alpha (TNF-α) inhibitors [using LISA-TRACKER(®) enzyme-linked immunosorbent assay (ELISA) kits (Theradiag, Marne La Vallee, France, or Alpha Laboratories, Heriot, UK), TNF-α-Blocker ELISA kits (Immundiagnostik AG, Bensheim, Germany) and Promonitor(®) ELISA kits (Proteomika, Progenika Biopharma, Bizkaia, Spain)] versus standard care for Crohn's disease (CD)...
November 2016: Health Technology Assessment: HTA
https://www.readbyqxmd.com/read/27836116/effect-of-layer-thickness-on-the-elution-of-bulk-fill-composite-components
#20
Lena Rothmund, Franz-Xaver Reichl, Reinhard Hickel, Panorea Styllou, Marianthi Styllou, Kai Kehe, Yang Yang, Christof Högg
OBJECTIVE: An increment layering technique in a thickness of 2mm or less has been the standard to sufficiently convert (co)monomers. Bulk fill resin composites were developed to accelerate the restoration process by enabling up to 4mm thick increments to be cured in a single step. The aim of the present study is to investigate the effect of layer thickness on the elution of components from bulk fill composites. METHODS: The composites ELS Bulk fill, SDR Bulk fill and Venus Bulkfill were polymerized according to the instruction of the manufacturers...
November 8, 2016: Dental Materials: Official Publication of the Academy of Dental Materials
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