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https://www.readbyqxmd.com/read/27910875/an-integrated-modelling-framework-from-cells-to-organism-based-on-a-cohort-of-digital-embryos
#1
Paul Villoutreix, Julien Delile, Barbara Rizzi, Louise Duloquin, Thierry Savy, Paul Bourgine, René Doursat, Nadine Peyriéras
We conducted a quantitative comparison of developing sea urchin embryos based on the analysis of five digital specimens obtained by automatic processing of in toto 3D+ time image data. These measurements served the reconstruction of a prototypical cell lineage tree able to predict the spatiotemporal cellular organisation of a normal sea urchin blastula. The reconstruction was achieved by designing and tuning a multi-level probabilistic model that reproduced embryo-level dynamics from a small number of statistical parameters characterising cell proliferation, cell surface area and cell volume evolution along the cell lineage...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27909688/the-danger-signal-extracellular-atp-is-an-inducer-of-fusobacterium-nucleatum-biofilm-dispersal
#2
Qinfeng Ding, Kai Soo Tan
Plaque biofilm is the primary etiological agent of periodontal disease. Biofilm formation progresses through multiple developmental stages beginning with bacterial attachment to a surface, followed by development of microcolonies and finally detachment and dispersal from a mature biofilm as free planktonic bacteria. Tissue damage arising from inflammatory response to biofilm is one of the hallmark features of periodontal disease. A consequence of tissue damage is the release of ATP from within the cell into the extracellular space...
2016: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/27905628/-virulence-mechanisms-of-enteropathogenic-escherichia-coli
#3
Ana Elvira Farfán-García, Sandra Catherine Ariza-Rojas, Fabiola Andrea Vargas-Cárdenas, Lizeth Viviana Vargas-Remolina
Acute diarrheal disease (ADD) is a global public health problem, especially in developing countries and is one of the causes of mortality in children under five. ADD etiologic agents include viruses, bacteria and parasites in that order. Escherichia coli bacteria it is classified as a major diarrheagenic agent and transmitted by consuming contaminated water or undercooked foods. This review compiled updates on information virulence factors and pathogenic mechanisms involved in adhesion and colonization of seven pathotypes of E...
August 2016: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/27904087/push-out-bond-strength-of-a-new-post-system-after-various-post-space-treatments
#4
Melek Akman, Ayçe Unverdi Eldeniz, Selen Ince, Mehmet Burak Guneser
To assess the effect of post-space treatment with chelating agents on the push-out bond-strength of a glass fiber post-system. Fortyeight human teeth were decoronated. The roots were prepared to size 40 and obturated. The post-spaces were prepared with PeesoReamer drills. The post-spaces were irrigated with (i) NaOCl and EDTA with chlorhexidine (QMix), (ii) NaOCl and EDTA, (iii) NaOCl and Citric acid, (iv) NaOCl and saline as a control group. i-TFC glass fiber posts were then luted with i-TFC bond system. The samples were horizontally sectioned...
2016: Dental Materials Journal
https://www.readbyqxmd.com/read/27903997/effects-of-omega-3-fatty-acid-supplementation-on-serum-biomarkers-inflammatory-agents-and-quality-of-life-of-patients-on-hemodialysis
#5
Firouzeh Moeinzadeh, Shahrzad Shahidi, Mojgan Mortazavi, Shahaboddin Dolatkhah, Mohammadhossein Kajbaf, Shaghayegh Haghjooy Javanmard, Alireza Moghtaderi
INTRODUCTION: Patients on long-term hemodialysis are at a higher risk of cardiovascular disease and premature mortality. It is generally believed that omega-3 supplementation can prevent cardiovascular events due to its anti-inflammatory and anti-atherosclerotic effects. MATERIALS AND METHODS: Fifty-two hemodialysis patients were divided into 2 groups to receive omega-3 and placebo for 6 six months. Serum biomarkers and inflammatory agents were measured in both groups before and after the intervention...
November 2016: Iranian Journal of Kidney Diseases
https://www.readbyqxmd.com/read/27903030/-novel-therapeutic-approaches-in-inflammatory-bowel-diseases
#6
Raja Atreya, Markus Friedrich Neurath
Increasing knowledge regarding the immunopathogenesis of IBD has led to the development or approval of novel therapeutic agents for the treatment of Crohn's disease or ulcerative colitis. The new substances for example include antibodies against IL-12 / 23, anti-adhesion molecules and antisense oligonucleotides. The increase of therapeutic options will lead to a change of currently used therapeutic algorithms. Biomarkers to ensure a more individualized therapeutic approach are urgently needed to improve an efficient therapy of IBD patients...
November 2016: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/27902962/sargachromenol-protects-against-vascular-inflammation-by-preventing-tnf-%C3%AE-induced-monocyte-adhesion-to-primary-endothelial-cells-via-inhibition-of-nf-%C3%AE%C2%BAb-activation
#7
Wi-Gyeong Gwon, Eun-Ji Joung, Mi-Sung Kwon, Su-Jin Lim, Tadanobu Utsuki, Hyeung-Rak Kim
Vascular inflammation is a key factor in the pathogenesis of atherosclerosis. The purpose of this study was to investigate the protective effects of sargachromenol (SCM) against tumor necrosis factor (TNF)-α-induced vascular inflammation. SCM decreased the expression of cell adhesion molecules, including intracellular adhesion molecule-1 and vascular cell adhesion molecule-1, in TNF-α-stimulated human umbilical vein endothelial cells (HUVECs), resulted in reduced adhesion of monocytes to HUVECs. SCM also decreased the production of monocyte chemoattractant protein-1 and matrix metalloproteinase-9 in TNF-α-induced HUVECs...
November 27, 2016: International Immunopharmacology
https://www.readbyqxmd.com/read/27900825/fungal-infection-dynamics-in-response-to-temperature-in-the-lepidopteran-insect-galleria-mellonella
#8
Vadim Y Kryukov, Olga N Yaroslavtseva, Miranda M A Whitten, Maksim V Tyurin, Katherine J Ficken, Carolyn Greig, Nadja R Melo, Viktor V Glupov, Ivan M Dubovskiy, Tariq M Butt
This study examines how the dynamics of fungus - insect interactions can be modulated by temperature. The wax moth, Galleria mellonella, is a well-studied and important model insect whose larvae in the wild develop optimally at around 34°C in beehives. However, surprisingly little research on wax moths has been conducted at relevant temperatures. In this study, the entomopathogenic fungus Metarhizium robertsii inflicted rapid and substantial mortality on wax moth larvae maintained at a constant temperature of 24°C, but at 34°C a ten-fold higher dose was required to achieve an equivalent mortality...
November 29, 2016: Insect Science
https://www.readbyqxmd.com/read/27900529/effectiveness-of-pit-and-fissure-sealants-bonded-with-different-adhesive-systems-a-prospective-randomized-controlled-trial
#9
Gizem Erbas Unverdi, Stephan Atilla Atac, Zafer Cavit Cehreli
OBJECTIVES: To evaluate and compare the clinical retention of a resin-based fissure sealant placed with an intermediate layer of etch-and-rinse (ER) or self-etch (SE) adhesives. MATERIALS AND METHODS: Two hundred twenty-eight sealants were placed in 57 children with previously unsealed, caries-free permanent first molars, employing a split-mouth design. The teeth were randomized into four groups (n = 57 teeth/groups) according to the adhesive system placed under the tested sealant (Delton FS+; Dentsply)...
November 30, 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27900042/antitumor-activity-of-7rh-a-discoidin-domain-receptor-1-inhibitor-alone-or-in-combination-with-dasatinib-exhibits-antitumor-effects-in-nasopharyngeal-carcinoma-cells
#10
Qiu-Ping Lu, Wen-Dan Chen, Jie-Ren Peng, Yao-Dong Xu, Qian Cai, Gong-Kan Feng, Ke Ding, Xiao-Feng Zhu, Zhong Guan
Dysregulation of the discoidin domain receptors (DDRs) has been implicated in the development of numerous types of tumors, including head and neck cancer, and nasopharyngeal, breast, ovarian and esophageal carcinomas. Furthermore, agents that inhibit DDR1 activity are hypothesized to be useful for the treatment of nasopharyngeal carcinoma (NPC). The aim of the present study was to evaluate the effect of the DDR1 inhibitory (3-(2-(pyrazolo(1,5-a)pyrimidin-6-yl)-ethynyl)benzamide compound, 7RH, in NPC cells both in vitro and in vivo, and its effect when used in combination with dasatinib, a SRC family kinase (SFK) inhibitor...
November 2016: Oncology Letters
https://www.readbyqxmd.com/read/27899994/targeting-of-the-leukemia-microenvironment-by-c-rgdfv-overcomes-the-resistance-to-chemotherapy-in-acute-myeloid-leukemia-in-biomimetic-polystyrene-scaffolds
#11
Zhao-Hua Shen, Dong-Feng Zeng, Xiao-Yan Wang, Ying-Ying Ma, Xi Zhang, Pei-Yan Kong
The bone marrow microenvironment provides a relative sanctuary from cytotoxic drugs for leukemia cells. The present niche models concentrate on a two-dimensional (2D) co-culture system in vitro, which does not imitate the in vivo environment, while the 3D scaffolds are more reflective of this. Osteopontin (Opn) secreted by bone marrow osteoblasts, may participate in protecting leukemia cells from apoptosis by binding to its receptor αvβ3, which can be expressed on the surface of the leukemia MV4-11 cell line...
November 2016: Oncology Letters
https://www.readbyqxmd.com/read/27899918/mechanistic-basis-of-antimicrobial-actions-of-silver-nanoparticles
#12
REVIEW
Tikam Chand Dakal, Anu Kumar, Rita S Majumdar, Vinod Yadav
Multidrug resistance of the pathogenic microorganisms to the antimicrobial drugs has become a major impediment toward successful diagnosis and management of infectious diseases. Recent advancements in nanotechnology-based medicines have opened new horizons for combating multidrug resistance in microorganisms. In particular, the use of silver nanoparticles (AgNPs) as a potent antibacterial agent has received much attention. The most critical physico-chemical parameters that affect the antimicrobial potential of AgNPs include size, shape, surface charge, concentration and colloidal state...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27898462/recent-advances-in-allograft-vasculopathy
#13
Jonathan Merola, Daniel D Jane-Wit, Jordan S Pober
PURPOSE OF REVIEW: Despite considerable advances in controlling acute rejection, the longevity of cardiac and renal allografts remains significantly limited by chronic rejection in the form of allograft vasculopathy. This review discusses recently reported mechanistic insights of allograft vasculopathy pathogenesis as well as recent clinical evaluations of new therapeutic approaches. RECENT FINDINGS: Although adaptive immunity is the major driver of allograft vasculopathy, natural killer cells mediate vasculopathic changes in a transplanted mouse heart following treatment with donor-specific antibody (DSA)...
November 24, 2016: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/27896223/urokinase-type-plasminogen-activator-receptor-upar-as-a-new-therapeutic-target-in-cancer
#14
Nunzia Montuori, Ada Pesapane, Francesca W Rossi, Valentina Giudice, Amato De Paulis, Carmine Selleri, Pia Ragno
The urokinase (uPA)-type plasminogen activator receptor (uPAR) is a GPI-anchored receptor that focuses urokinase (uPA) proteolytic activity on the cell surface. uPAR also regulates cell adhesion, migration and proliferation, protects from apoptosis and contributes to epithelial mesenchymal transition (EMT), independently of uPA enzymatic activity. Indeed, uPAR interacts with beta1, beta2 and beta3 integrins, thus regulating their activities. uPAR cross-talks with receptor tyrosine kinases through integrins and regulates cancer cell dormancy, proliferation and angiogenesis...
November 2016: Translational Medicine @ UniSa
https://www.readbyqxmd.com/read/27894987/a-novel-approach-for-dry-powder-coating-of-pellets-with-ethylcellulose-part-i-evaluation-of-film-formulation-and-process-set-up
#15
Beatrice Albertini, Serena Bertoni, Cecilia Melegari, Luisa Stella Dolci, Nadia Passerini
An innovative dry powder coating technology was developed in a high-shear granulator using ethylcellulose (E10) as polymer. Several solid plasticizers were investigated with the aim of decreasing the polymer Tg at least to the highest possible working temperature (80°C). DSC analysis of physical mixtures of E10 and plasticizers evidenced that lauric acid (LA) was the most effective plasticizer. In order to reach the target temperature a liquid plasticizer, oleic acid (OA), was introduced in the coating formulation...
November 25, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27893842/t-cell-receptor-v%C3%AE-staining-identifies-the-malignant-clone-in-adult-t-cell-leukemia-and-reveals-killing-of-leukemia-cells-by-autologous-cd8-t-cells
#16
Aileen G Rowan, Aviva Witkover, Anat Melamed, Yuetsu Tanaka, Lucy B M Cook, Paul Fields, Graham P Taylor, Charles R M Bangham
There is growing evidence that CD8+ cytotoxic T lymphocyte (CTL) responses can contribute to long-term remission of many malignancies. The etiological agent of adult T-cell leukemia/lymphoma (ATL), human T lymphotropic virus type-1 (HTLV-1), contains highly immunogenic CTL epitopes, but ATL patients typically have low frequencies of cytokine-producing HTLV-1-specific CD8+ cells in the circulation. It remains unclear whether patients with ATL possess CTLs that can kill the malignant HTLV-1 infected clone. Here we used flow cytometric staining of TCRVβ and cell adhesion molecule-1 (CADM1) to identify monoclonal populations of HTLV-1-infected T cells in the peripheral blood of patients with ATL...
November 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27892961/host-derived-extracellular-rna-promotes-adhesion-of-streptococcus-pneumoniae-to-endothelial-and-epithelial-cells
#17
Dariusz Zakrzewicz, Simone Bergmann, Miroslava Didiasova, Benedetto Daniele Giaimo, Tilman Borggrefe, Maren Mieth, Andreas C Hocke, Guenter Lochnit, Liliana Schaefer, Sven Hammerschmidt, Klaus T Preissner, Malgorzata Wygrecka
Streptococcus pneumoniae is the most frequent cause of community-acquired pneumonia. The infection process involves bacterial cell surface receptors, which interact with host extracellular matrix components to facilitate colonization and dissemination of bacteria. Here, we investigated the role of host-derived extracellular RNA (eRNA) in the process of pneumococcal alveolar epithelial cell infection. Our study demonstrates that eRNA dose-dependently increased S. pneumoniae invasion of alveolar epithelial cells...
November 28, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27892838/effect-of-bioactive-primers-on-bacterial-induced-secondary-caries-at-the-tooth-resin-interface
#18
G E Kim, A A Leme-Kraus, R Phansalkar, G Viana, C Wu, S-N Chen, G F Pauli, Akb Bedran-Russo
Secondary caries at the tooth-resin interface is the primary reason for replacement of resin composite restorations. The tooth-resin interface is formed by the interlocking of resin material with hydroxyapatite crystals in enamel and collagen mesh structure in dentin. Efforts to strengthen the tooth-resin interface have identified chemical agents with dentin collagen cross-linking potential and antimicrobial activities. The purpose of the present study was to assess protective effects of bioactive primer against secondary caries development around enamel and dentin margins of class V restorations, using an in vitro bacterial caries model...
November 28, 2016: Operative Dentistry
https://www.readbyqxmd.com/read/27892835/effect-of-adhesive-restoration-and-bleaching-technique-on-the-concentration-of-hydrogen-peroxide-in-the-pulp-chamber
#19
V Cavalli, B G Silva, S B Berger, G Abuna, F C Marson, Cpm Tabchoury, M Giannini
This study aimed to quantify the concentration of hydrogen peroxide into the pulp chamber in the presence or absence of adhesive enamel restorations and to analyze the resin-dentin interface of bleached groups. Bovine incisors (120) were randomly divided into three groups according to enamel treatment (n=40 each): (1) enamel without restoration (control); (2) enamel cavities (3 mm diameter × 1.5 mm depth) restored with a silorane-based (SB) system; or (3) enamel cavities (3 mm diameter × 1.5 mm depth) restored with a dimethacrylate-based (DB) system...
November 28, 2016: Operative Dentistry
https://www.readbyqxmd.com/read/27890621/nasal-drug-delivery-design-of-a-novel-mucoadhesive-and-in-situ-gelling-polymer
#20
Claudia Menzel, Max Jelkmann, Flavia Laffleur, Andreas Bernkop-Schnürch
The aim of the present study was to establish a novel polymeric excipient for liquid nasal dosage forms exhibiting viscosity increasing properties, improved mucoadhesion and stability towards oxidation in solution. In order to achieve this goal, 2-mercaptonicotinic acid was first coupled to L-cysteine by disulfide exchange reaction and after purification directly attached to the polymeric backbone of xanthan gum by carbodiimide mediated amide bond formation. The resulting conjugate was characterized with respect to the amount of coupled ligand, the in situ gelling behavior, mucoadhesive properties and stability towards oxidation...
November 24, 2016: International Journal of Pharmaceutics
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