Ghost Cells
Mostrando 1-12 de 74 artigos, teses e dissertações.
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1. Análise da expressão imunoistoquímica de proteínas associadas a via de sinalização Wnt/ß-catenina em ameloblastomas sólidos e tumores odontogênicos císticos calcificantes / Analysis of the immunohistochemical expression of proteins associated with Wnt/ß-catenin signaling in ameloblastomas and calcifying cystic odontogenic tumors
Ameloblastoma (SMA) is one of the most common odontogenic tumors (OT), and although benign, it may have aggressive clinical behavior, be locally destructive and invasive, while calcifying cystic odontogenic tumor (CCOT) is a benign cystic OT that presents microscopic similarities with AME, but, in general, it has a less aggressive clinical behavior. Wnt/ß--
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2012
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2. Studies of the kinetic characteristics of alkaline phosphatase reconstituted in vesicular systems / Estudos das características cinéticas da fosfatase alcalina reconstituída em sistemas vesiculares
Alkaline phosphatase is a multifunctional enzyme, capable of hydrolyzing phosphate monoesters, pyrophosphate, phosphodiesters, as well as catalyzing transphosphorylation reactions, and it is named "alkaline" due to its ability to perform these reactions more efficiently in pH above the neutral (pH 8-11). The aim of this work was to standardize a methodology
Publicado em: 2008
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3. Ghost protein damage by peroxynitrite and its protection by melatonin
We have studied the effect of peroxynitrite (ONOO-) on the membrane cytoskeleton of red blood cells and its protection by melatonin. Analysis of the protein fraction of the preparation by SDS-PAGE revealed a dose-dependent (0-600 µM ONOO-) disappearance at pH 7.4 of the main proteins: spectrin, band 3, and actin, with the concomitant formation of high-molec
Brazilian Journal of Medical and Biological Research. Publicado em: 2000-01
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4. Atividade da NADH-redutase de metemoglobina em hemolisado e membranas eritrocitarias de pacientes hansenianos sob tratamento sulfonico
We measured in the blood samples of 72 adults leprosy patients who were ingesting 100 mg of dapsone/day, the levels of erythrocytes, hemoglobin, methemoglobin, sulfone and reticulocytes. NADH-methemoglobin reductase was measured in the hemolysate and ghost cells. AlI subjects were impatients of Instituto Lauro de Souza Lima - Bauru S.P. Brazil. IdenticaI tes
Publicado em: 1997
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5. Presence of active polyribosomes in bacterial cells infected with T4 bacteriophage ghosts.
Host protein synthesis of Escherichia coli stops abruptly after T4 bacteriophage ghost infection. When infection was carried out in the presence of 10 mM Mg2plus, infected cells still have active polyribosomes despite the complete stoppage of protein synthesis. On the other hand, when T4 ghost infection was carried out in the presence of 1 mM Mg2plus, no pol
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6. Nucleoid release from Escherichia coli cells.
The time course of morphological changes during lysis of Escherichia coli cells was examined with respect to an undisturbed release of nucleoids. The addition of detergents to plasmolyzed, osmotic sensitive cells resulted in the immediate reversal of plasmolysis followed by the appearance of rod-shaped ghost cells without any detectable spheroplast formation
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7. Haemolytic glaucoma occurring in phakic eyes.
The occurrence of haemolytic glaucoma in phakic eyes due to ghost cells has not previously been reported. Three cases of haemolytic glaucoma occurring over two years after massive vitreous haemorrhage in patients with an intact lens iris diaphragm are described. In one case there was histological confirmation of the presence of ghost cells in the anterior ch
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8. Coreceptor-Dependent Inhibition of the Cell Fusion Activity of Simian Immunodeficiency Virus Env Proteins
The cytoplasmic tail (R peptide) sequence is able to regulate the fusion activity of the murine leukemia virus (MuLV) envelope (Env) protein. We have previously shown that this sequence exerts a profound inhibitory effect on the fusion activity of simian immunodeficiency virus (SIV)-MuLV chimeric Env proteins which contain the extracellular and transmembrane
American Society for Microbiology.
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9. Metabolism of T4 Bacteriophage Ghost-Infected Cells: Effect of Bacteriophage and Ghosts on the Uptake of Carbohydrates in Escherichia coli B
Ghosts of T4 bacteriophage inhibit the uptake of thiomethyl-β-galactoside (TMG), α-methylglucoside, glucose-6-phosphate, and glycerol in Escherichia coli B. The transport of orthonitrophenyl-β-galactoside (ONPG) is also inhibited to a lesser degree and without alteration of the apparent Km of transport. These effects of ghosts parallel those of energy poi
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10. Protein synthesis in bacteriophage ghost-infected cells.
Escherichia coli B infected with T4 phage ghosts at 10 mM Mg2+ regains its protein synthesizing activity upon addition of ATP, GTP, and their generator to approximately 2% of the intact exponentially growing cells. In contrast to amino acid incorporation by intact cells, this system is sensitive to EDTA or low Mg2+. On the other hand, this system, differing
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11. Does Phospholipase Have a Role in Killing and Sodium Dodecyl Sulfate Lysis of T4 Ghost-Infected Escherichia coli?
The activation of Escherichia coli phospholipase by T4 ghost attachment was shown not to have a significant role in the killing or in the increased sensitivity of the bacterial cells to lysis by sodium dodecyl sulfate.
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12. Escherichia coli Ghost Production by Expression of Lysis Gene E and Staphylococcal Nuclease
The production of bacterial ghosts from Escherichia coli is accomplished by the controlled expression of phage φX174 lysis gene E and, in contrast to other gram-negative bacterial species, is accompanied by the rare detection of nonlysed, reproductive cells within the ghost preparation. To overcome this problem, the expression of a secondary killing gene wa
American Society for Microbiology.