Results 201 to 210 of about 19,651 (255)

Structure and genetics of a glycerol 2-phosphate-containing O-specific polysaccharide of Escherichia coli O33

Carbohydrate Research, 2018
An O-specific polysaccharide was isolated by mild acid degradation of the lipopolysaccharide of Escherichia coli O33 followed by gel-permeation chromatography on Sephadex G-50. The polysaccharide was found to contain glycerol 2-phosphate (Gro-2-P), and the following structure of its tetrasaccharide repeat was established by sugar analysis ...
Sof'ya N, Senchenkova, Wenqi, Hou, Olesya I, Naumenko, Peng, Geng, Alexander S, Shashkov, Andrei V, Perepelov, Bin, Yang, Yuriy A, Knirel   +7 more
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Structure of the O-polysaccharide from the lipopolysaccharide of Providencia alcalifaciens O33

Carbohydrate Research, 2014
Mild acid degradation of the lipopolysaccharide from Providencia alcalifaciens O33 resulted in an O-polysaccharide along with core and O-unit-bearing core oligosaccharides. Composition of the oligosaccharides was inferred by ESI mass spectrometry. Based on sugar and methylation analyses, Smith degradation and (1)H and (13)C NMR spectroscopy data, the ...
Olga G, Ovchinnikova, Alexander S, Shashkov, Alexander O, Chizhov, Magdalena, Moryl, Antoni, Rozalski, Yuriy A, Knirel   +5 more
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O33 Oxidative stress induced both apoptosis and necroptosis in endothelial cells

Biochemical Pharmacology, 2017
Oxidative stress plays an essential role in mediating endothelial cell death while the underlying mechanisms remain elusive. Previous reports suggested that ROS overproduction induced both apoptosis and necrosis. Herein, the pro-death effect of tert-butyl hydroperoxide (t-BHP), an alternative for H2O2, on human umbilical vein endothelial cells was ...
Xiuping Chen, Wenwen Zhao
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O33. The value of different reconstruction algorithms for quantification of FDG PET brain imaging

Physica Medica, 2016
Introduction Reconstruction influences the quantitative results in PET imaging. The aim of this study was the evaluation of different image reconstruction parameters and their impact on quantification for 18 F-FDG PET of the brain. The reconstruction parameters studied were the number of iterations, smoothing levels (relaxation parameter ...
T.C.G. Moalosi, P. Dupont, M. Mix, J. Warwick, M. du Toit, A. Doruyter   +5 more
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O33. STAT signaling in renal progenitor differentiation and tumorigenesis

Differentiation, 2010
While originally implicated in inflammatory and immune processes, it is now apparent that canonical STAT signaling drives a variety of fundamental cellular processes, including stem cell renewal, cell proliferation, migration, and progenitor differentiation. Furthermore, STATs are often constitutively activated/phosphorylated in an array of hematologic
A. Perantoni
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