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https://www.readbyqxmd.com/read/29141233/mirnome-profiling-of-purified-endoderm-and-mesoderm-differentiated-from-hescs-reveals-functions-of-mir-483-3p-and-mir-1263-for-cell-fate-decisions
#1
Daichi Ishikawa, Ulf Diekmann, Jan Fiedler, Annette Just, Thomas Thum, Sigurd Lenzen, Ortwin Naujok
Pluripotent stem cells hold great promise for regenerative medicine since they can differentiate into all somatic cells. MicroRNAs (miRNAs) could be important for the regulation of these cell-fate decisions. Profiling of miRNAs revealed 19 differentially expressed miRNAs in the endoderm and 29 in the mesoderm when analyzing FACS-purified cells derived from human embryonic stem cells. The mesodermal-enriched miR-483-3p was identified as an important regulator for the generation of mesodermal PDGFRA(+) paraxial cells...
November 14, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/29141066/vancomycin-infiltrate-induced-dermatitis-mimicking-bullous-cellulitis
#2
Sowmya Nanjappa, Matthew Snyder, John N Greene
<p>Extravasation of medications can manifest as tenderness, pain, tissue necrosis, and thrombophlebitis and lead to infection and severe long-term complications. Risk factors for leakage of medications include mechanical and pharmacologic mechanisms such as cannulation technique, vasoconstriction, and cytotoxicity. Well-known vesicants like anthracyclines, vinca alkaloids, and vasopressors are usually administered with proper caution. Often overlooked are many antimicrobial agents, which typically act via differences in osmolality and pH...
November 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/29140922/fingolimod-reduces-neuropathic-pain-behaviors-in-a-mouse-model-of-multiple-sclerosis-by-a-sphingosine-1-phosphate-receptor-1-dependent-inhibition-of-central-sensitization-in-the-dorsal-horn
#3
Suzanne Doolen, Tommaso Iannitti, Benjamin C Shaw, Carolyn M Grachen, Renee R Donahue, Bradley K Taylor
Multiple sclerosis (MS) is an autoimmune-inflammatory neurodegenerative disease that is often accompanied by a debilitating neuropathic pain. Disease-modifying agents slow the progression of MS and prevent relapses, yet it remains unclear if they yield analgesia. We explored the analgesic potential of fingolimod (FTY720), an agonist/functional antagonist at the sphingosine-1-phosphate receptor 1 (S1PR1), because it reduces hyperalgesia in models of peripheral inflammatory and neuropathic pain. We used a myelin oligodendrocyte glycoprotein 35-55 (MOG35-55) mouse model of experimental autoimmune encephalomyelitis (EAE), modified to avoid frank paralysis and thus allow for assessment of withdrawal behaviors to somatosensory stimuli...
November 13, 2017: Pain
https://www.readbyqxmd.com/read/29140828/biomimetic-nanoparticles-for-transplantation-tolerance
#4
Silvia Minardi, Sahil Shah, Xunrong Luo
PURPOSE OF REVIEW: The current review aims to provide a current landscape and future trends of biomimetic nanoparticles which have the potential to revolutionize the field of transplantation in the next decade. RECENT FINDINGS: Currently, the inability to safely induce robust donor-specific immunological tolerance makes it difficult to achieve immunosuppression-free graft survival. Despite progresses in the development of nanotherapeutics for antigen-specific immunomodulation in autoimmune diseases and in cancer treatments, few have been proposed and tested in transplantation with success...
November 14, 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/29140800/glassy-magnetic-ground-state-and-kondo-like-behaviour-in-mn10fege8-alloy
#5
S Pramanick, P Dutta, S Majumdar, S Chatterjee
We report a detailed investigation of the ground-state magnetic properties of newly synthesized [Formula: see text] [Formula: see text] alloy. The sample can be thought of being derived by substituting one Mn atom by Fe of the parent compound [Formula: see text] [Formula: see text]. Fe-substitution leads to a drastic change in the magnetic ground state as well as to the magneto-transport properties of the parent alloy. On cooling below 250 K, [Formula: see text] [Formula: see text] undergoes a transition from paramagnetic phase to a state having significant ferromagnetic correlations...
November 15, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/29140704/direct-observation-of-splitting-in-oil-in-water-in-oil-emulsion-droplets-via-a-microchannel-mimicking-membrane-pores
#6
Kazuki Akamatsu, Koki Minezaki, Masumi Yamada, Minoru Seki, Shin-Ichi Nakao
Direct observation of double emulsion droplet permeation through a microchannel that mimicked 100-μm membrane pores with a porosity of 66.7% provided insights regarding splitting mechanisms in porous membranes. The microchannel was fabricated by standard soft lithography, and the oil-in-water-in-oil double emulsion droplets were prepared with a glass capillary device. By changing the flow rate from 0.5 to 5.0×10(-2) m s(-1), three characteristic behaviors were observed: (a) passage into one channel without splitting; (b) division into two smaller components; and (c) stripping of the middle water phase of the double emulsion droplets into a smaller double emulsion droplet and a smaller water-in-oil single emulsion droplet...
November 15, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29140155/persistent-prevention-of-oxaliplatin-induced-peripheral-neuropathy-using-calmangafodipir-pledox-%C3%A2-a-placebo-controlled-randomised-phase-ii-study-pliant
#7
Bengt Glimelius, Nebojsa Manojlovic, Per Pfeiffer, Baadur Mosidze, Galina Kurteva, Mia Karlberg, Devalingam Mahalingam, Peter Buhl Jensen, Jan Kowalski, Marie Bengtson, Malin Nittve, Jacques Näsström
PURPOSE: Oxaliplatin causes disabling acute and chronic peripheral neuropathy. We explored the preventive effects of calmangafodipir, mimicking the mitochondrial enzyme manganese superoxide dismutase, thereby protecting cells from oxidative stress, in a placebo-controlled, double-blinded randomised phase II study (ClinicalTrials.gov.NCT01619423) in patients with metastatic colorectal cancer (mCRC). PATIENT AND METHODS: mCRC patients treated with modified FOLFOX-6 (folinic acid 200 mg/m(2), 5-fluorouracil bolus 400 mg/m(2), oxaliplatin 85 mg/m(2) and 5-fluorouracil 2400 mg/m(2) continuous infusion for 46 h) every fortnight for 8 cycles in first or second line were eligible...
November 15, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/29139245/evaluation-of-a-pointwise-microcirculation-assessment-method-using-liquid-and-multilayered-tissue-simulating-phantoms
#8
Ingemar Fredriksson, Rolf B Saager, Anthony J Durkin, Tomas Strömberg
A fiber-optic probe-based instrument, designed for assessment of parameters related to microcirculation, red blood cell tissue fraction (fRBC), oxygen saturation (SO2), and speed resolved perfusion, has been evaluated using state-of-the-art tissue phantoms. The probe integrates diffuse reflectance spectroscopy (DRS) at two source-detector separations and laser Doppler flowmetry, using an inverse Monte Carlo method for identifying the parameters of a multilayered tissue model. Here, we characterize the accuracy of the DRS aspect of the instrument using (1) liquid blood phantoms containing yeast and (2) epidermis-dermis mimicking solid-layered phantoms fabricated from polydimethylsiloxane, titanium oxide, hemoglobin, and coffee...
November 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29139224/a-polyelectrolyte-multilayer-platform-for-investigating-growth-factor-delivery-modes-in-human-liver-cultures
#9
Christine Lin, Raimundo Romero, Lioudmila V Sorokina, Kimberly R Ballinger, Laura W Place, Matt J Kipper, Salman R Khetani
Polyelectrolyte multilayers (PEMs) of chitosan and heparin are useful for mimicking growth factor (GF) binding to extracellular matrix (ECM) as in vivo. Here, we developed a PEM platform for delivering bound/adsorbed GFs to monocultures of primary human hepatocytes (PHHs) and PHH/non-parenchymal cell (NPC) co-cultures, which are useful for drug development and regenerative medicine. The effects of ECM protein coating (collagen I, fibronectin, and Matrigel®) and terminal PEM layer on PHH attachment/functions were determined...
November 15, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/29138420/expression-of-both-poly-r-c-binding-protein-1-pcbp1-and-mirna-3978-is-suppressed-in-peritoneal-gastric-cancer-metastasis
#10
Fu-Jian Ji, Yuan-Yu Wu, Zhe An, Xue-Song Liu, Jun-Nan Jiang, Fang-Fang Chen, Xue-Dong Fang
The expression of legumain which has been shown overexpressed in patients with metastatic gastric cancer is positively correlated to both disease progression and outcome, and negatively correlated to microRNA (miR)-3978 expression. The RNA-binding protein, poly r(C) binding protein 1 (PCBP1) was the most downregulated protein in the metastatic tissue specimens. Quantitative real-time PCR showed that PCBP1 expression is transcriptionally downregulated in peritoneal metastasis tissues. RNA immunoprecipitation experiments showed that PCBP1 and miR-3978 are sequestered in normal peritoneal tissue, but the complex is disrupted following metastatic progression...
November 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29138083/adaptations-in-the-physiological-heterogeneity-and-viability-of-shigella-dysenteriae-shigella-flexneri-and-salmonella-typhimurium-after-exposure-to-simulated-gastric-acid-fluid
#11
Atheesha Singh, Tobias George Barnard
Stomach acidity is an important barrier of the human body to protect itself from microbial pathogens entering the small intestine and causing infection. This study examined the survival adaptations of non-acid adapted diarrheal Shigella and Salmonella strains in an environment mimicking the human stomach. The bacterial responses to the challenge of acidic simulated gastric fluid were studied using flow cytometry (physiological heterogeneity, membrane integrity and survival (culturability) respectively. Flow cytometry showed that bacterial cells, when exposed to gastric fluid, transformed distinctly, into physiologically heterogeneous sub-populations: intact, stressed and damaged cells, when stained with propidium iodide and thiazole orange...
November 11, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29138064/bicontinuous-microemulsions-as-a-biomembrane-mimetic-system-for-melittin
#12
Douglas G Hayes, Ran Ye, Rachel N Dunlap, Divina B Anunciado, Sai Venkatesh Pingali, Hugh M O'Neill, Volker S Urban
Antimicrobial peptides effectively kill antibiotic-resistant bacteria by forming pores in prokaryotes' biomembranes via penetration into the biomembranes' interior. Bicontinuous microemulsions, consisting of interdispersed oil and water nanodomains separated by flexible surfactant monolayers, are potentially valuable for hosting membrane-associated peptides and proteins due to their thermodynamic stability, optical transparency, low viscosity, and high interfacial area. Here, we show that bicontinuous microemulsions formed by negatively-charged surfactants are a robust biomembrane mimetic system for the antimicrobial peptide melittin...
November 11, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29137984/recombinant-human-glp-1-rhglp-1-alleviating-renal-tubulointestitial-injury-in-diabetic-stz-induced-rats
#13
Weiqin Yin, Shiqing Xu, Zai Wang, Honglin Liu, Liang Peng, Qing Fang, Tingting Deng, Wenjian Zhang, Jinning Lou
GLP-1-based treatment improves glycemia through stimulation of insulin secretion and inhibition of glucagon secretion. Recently, more and more findings showed that GLP-1 could also protect kidney from diabetic nephropathy. Most of these studies focused on glomeruli, but the effect of GLP-1 on tubulointerstitial and tubule is not clear yet. In this study, we examined the renoprotective effect of recombinant human GLP-1 (rhGLP-1), and investigated the influence of GLP-1 on inflammation and tubulointerstitial injury using diabetic nephropathy rats model of STZ-induced...
November 11, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29137939/in-silico-identification-and-in-vivo-characterization-of-small-molecule-therapeutic-hypothermia-mimetics
#14
Claire Coderch, María Díaz de Cerio, Jose María Zapico, Rafael Peláez, Ignacio M Larrayoz, Ana Ramos, Alfredo Martínez, Beatriz de Pascual-Teresa
Hypothermia has been proved to have a beneficial effect on several pathologies. CIRBP is one of the so termed cold-shock proteins involved in this process. In this work, we have detected small molecules capable of modulating the activity of CIRBP in the absence of a cold stimulus, by High Throughput Virtual Screening (HTVS) of the Diversity Set IV of the NCI and 15 compounds of our in-house data base. Fifteen compounds were selected from the HTVS to carry out a second screening through a cell-based Western blot assay...
October 31, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/29137246/apigenin-sensitizes-bel-7402-adm-cells-to-doxorubicin-through-inhibiting-mir-101-nrf2-pathway
#15
Ai-Mei Gao, Xiao-Yu Zhang, Zun-Ping Ke
Chemo-resistance is one of the main obstacle in hepatocellular carcinoma therapy. Apigenin as a natural bioflavonoid has been exhibited anti-cancer properties in various malignant cancers. The aim of this study is to evaluate the potential chemo-sensitization effect of apigenin in doxorubicin-resistant hepatocellular carcinoma cell line BEL-7402/ADM and to investigate its possible mechanism. We found that apigenin significantly reversed doxorubicin sensitivity and induced caspase-dependent apoptosis in BEL-7402/ADM cells...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29137052/arytenoid-cartilage-dislocation-mimicking-bilateral-vocal-cord-paralysis-a-case-report
#16
Eun H Chun, Hee J Baik, Rack K Chung, Hun J Lee, Kwangseob Shin, Jae H Woo
RATIONALE: Arytenoid dislocation is very rare and may be misdiagnosed as vocal cord paralysis or a self-limiting sore throat. PATIENT CONCERNS: A 70-year-old male (70 kg, 156 cm) was scheduled for transurethral resection of bladder tumors. A McGrath videolaryngoscope, with a basic cuffed Mallinckrodt oral tracheal tube of 7.5 mm internal diameter, was used to successfully intubate his trachea. The duration of surgery was 25 minutes. In the recovery room, he complained of sore throat and dyspnea with inspiratory stridor, which were not resolved after intravenous injection of 10 mg of dexamethasone...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29136923/a-high-sensitivity-biosensor-to-detect-the-presence-of-perfluorinated-compounds-in-environment
#17
Nunzio Cennamo, Luigi Zeni, Paolo Tortora, Maria Elena Regonesi, Alessandro Giusti, Maria Staiano, Sabato D'Auria, Antonio Varriale
A novel surface plasmon resonance (SPR) optical fiber biosensor, able to bind perfluorooctanoate and perfluorooctanesulfonate compounds, is presented. In the first step, an ad hoc antibody compound has been designed, produced and tested by ELISA, then, in the second step, the gold surface of a plastic optical fiber sensor has been derivatizated and functionalized with this new bio-receptor, able to bind target analytes with high affinity and selectivity. The experimental data have shown that the developed SPR optical fiber biosensor makes it possible to detect these compounds...
February 1, 2018: Talanta
https://www.readbyqxmd.com/read/29136695/-metastatic-epithelioid-hemangioendothelioma-of-peritoneum-with-florid-mesothelial-hyperplasia-mimicking-malignant-mesothelioma-report-of-a-case
#18
M Zhao, L L Yu, Q L Tang, X L He
No abstract text is available yet for this article.
November 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/29136686/-clinicopathologic-and-molecular-characteristics-of-malignant-gastrointestinal-neuroectodermal-tumors
#19
M Zhao, T W Zhao, J Ma, C Y Wu, L Chen, G Q Ru, X L He
Objective: To investigate the clinicopathologic and molecular characteristics, diagnostic, differential diagnostic and prognostic features of malignant gastrointestinal neuroectodermal tumor. Methods: Two cases of malignant gastrointestinal neuroectodermal tumor were retrieved; the clinical and radiologic features, histomorphology, immunophenotype, molecular genetics and prognosis were analyzed and the relevant literature reviewed. Results: Case 1 was a 57-year-old male, presented with recurrent abdominal pain and melena...
November 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/29136505/inhibition-of-trf1-telomere-protein-impairs-tumor-initiation-and-progression-in-glioblastoma-mouse-models-and-patient-derived-xenografts
#20
Leire Bejarano, Alberto J Schuhmacher, Marinela Méndez, Diego Megías, Carmen Blanco-Aparicio, Sonia Martínez, Joaquín Pastor, Massimo Squatrito, Maria A Blasco
Glioblastoma multiforme (GBM) is a deadly and common brain tumor. Poor prognosis is linked to high proliferation and cell heterogeneity, including glioma stem cells (GSCs). Telomere genes are frequently mutated. The telomere binding protein TRF1 is essential for telomere protection, and for adult and pluripotent stem cells. Here, we find TRF1 upregulation in mouse and human GBM. Brain-specific Trf1 genetic deletion in GBM mouse models inhibited GBM initiation and progression, increasing survival. Trf1 deletion increased telomeric DNA damage and reduced proliferation and stemness...
November 13, 2017: Cancer Cell
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