Lipopolysaccharides
Mostrando 25-36 de 669 artigos, teses e dissertações.
-
25. Vitamin E: characterization of the biological activity and relation with the nuclear receptor PPARy. / Vitamina E: caracterização da atividade biológica na resposta inflamatória induzida pelo LPS e sua relação com o receptor nuclear PPARy.
Vitamin E, a generic term to describe a group of structurally lipophilic molecules (tocopherols and tocotrienols), is one of the most known antioxidants and it has been studied also because its non-antioxidant roles. By the way, depending on the administered dose, -tocopherol can exert antagonic effects in vitro. Its known that PPAR, a nuclea
Publicado em: 2007
-
26. Influence of bovine enzootic leukosis on respiratory burst activity of leukocytes / Influência da leucose enzoótica bovina na atividade oxidativa de leucócitos
Different leukocyte populations play key roles on the elimination of foreign antigens through phagocytosis and killing by oxygen-independent and -dependent (respiratory burst) mechanisms. Assuming that Enzootic Bovine Leukosis virus (BLV), that causes a chronic disease, and affects, mainly, lymphoid tissues, alters bovine circulating leukocyte subpopulations
Publicado em: 2007
-
27. Nitric oxide paradox in asthma
Asthma results from allergen-driven intrapulmonary Th2 response, and is characterized by intermittent airway obstruction, airway hyperreactivity (AHR), and airway inflammation. Accumulating evidence indicates that inflammatory diseases of the respiratory tract are commonly associated with elevated production of nitric oxide (NO). It has been shown that exhal
Memórias do Instituto Oswaldo Cruz. Publicado em: 2005-03
-
28. Seric antibodies anti-hemorrhagic Escherichia coli (EHEC) in healthy Brazilian adults / Anticorpos séricos anti Escherichia coli enterohemorrágica (EHEC) em adultos saudáveis da Grande São Paulo
Gastroenteritis is still an important public health problem in developing countries and Escherichia coli are frequent agents of diarrhea. Brazilian adults present antibodies reactive with the principal virulence factors of enteropathogenic E. coli (EPEC), which have many genetic and antigenic similarities with enterohemorrhagic E. coli (EHEC), that may be re
Publicado em: 2005
-
29. Chemical structure and inhalation toxicity of lipopolysaccharides from bacteria on cotton.
Lipopolysaccharides from different bacteria isolated from cotton were purified and chemically analyzed. Their pulmonary toxicity to animals was tested in inhalation tests. Lipopolysaccharides from Agrobacterium and Xanthomonas were shown to differ from the others in that they contained no heptose and no non-hydroxylated fatty acids with a chain length of 12,
-
30. Cell Wall Lipopolysaccharides from Xanthomonas Species
Volk, Wesley A. (University of Virginia, Charlottesville). Cell wall lipopolysaccharides from Xanthomonas species. J. Bacteriol. 91:39–42. 1966.—The lipopolysaccharides from 20 species of Xanthomonas were extracted and purified. Biological studies suggest that these lipopolysaccharides are analogous to the endotoxins extracted from enteric organisms, as
-
31. Detection of lipopolysaccharides by ethidium bromide staining after sodium dodecyl sulfate-polyacrylamide gel electrophoresis.
A rapid and easy method for staining lipopolysaccharides with ethidium bromide is described. Lipopolysaccharides could be visualized by ethidium bromide with almost the same sensitivity as found with the silver-staining method in less than 30 min. The ethidium bromide-staining method was particularly suitable for staining lipopolysaccharides possessing acidi
-
32. Lipopolysaccharides of Salmonella T Mutants
The composition of lipopolysaccharides derived from various Salmonella T forms was studied. All T1-form lipopolysaccharides examined contained 14 to 22% each of both d-galactose and pentose in addition to 4 to 9% each of ketodeoxyoctonic acid, heptose, d-glucosamine, and d-glucose. The pentose was identified as d-ribose. The T2-form lipopolysaccharide examin
-
33. Identification of lipopolysaccharides and phospholipids of Escherichia coli in polyacrylamide gels.
Polyacrylamide gel electrophoresis of unfractionated lysates of radioactively labeled cells resolves not only proteins and polynucleotides into discrete bands but also cellular lipopolysaccharides and phospholipids. This allows a determination of the intracellular amounts of all of these macromolecules. In addition, this technique is sensitive enough to dete
-
34. Fatty acid alterations and polymyxin B binding by lipopolysaccharides from Pseudomonas aeruginosa adapted to polymyxin B resistance.
Lipopolysaccharides were extracted from freeze-dried cells of Pseudomonas aeruginosa PAO1 (polymyxin B susceptible), isolate A (polymyxin B resistant), and isolate A-reverted (polymyxin B intermediate resistance) by either the phenol-chloroform-petroleum ether or the modified phenol-water method. Isolate A and isolate A-reverted had drastic losses of 2-hydro
-
35. Lipophilic O-antigens in Rhodospirillum tenue.
Lipopolysaccharides of eight wild-type strains of the phototrophic bacterium Rhodospirillum tenue have been analyzed. All of the lipopolysaccharides are highly lipophilic. The compositions of preparations obtained by the phenol-water or by the phenol-chloroform-petroleum ether procedure are very similar. The polysaccharide moiety, obtained by mild acid hydro
-
36. The expression of E-selectin and chemokines in the cultured human lymphatic endothelium with lipopolysaccharides
This study investigated the expression of selectins and chemokines in cultured human lymphatic endothelial cells stimulated with lipopolysaccharides. In microarray, vascular cell adhesion molecule-1 and intercellular adhesion molecule-1 gene expressions in the lymphatic endothelium with lipopolysaccharides did not change at 0.5 h but increased two- to three-
Blackwell Science Inc.