Glycolipids
Mostrando 13-24 de 356 artigos, teses e dissertações.
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13. Caracterização de microdomínios de membrana resitentes a detergente não iônico em promastigotas de Leishmania (Viannia) braziliensis. Papel dos microdomínios na infectividade. / Characterization of non-ionic detergent resistant membrane microdomains in Leishmania (Viannia) braziliensis promastigotes. Role of these microdmains in the infectivity
Glycoconjugates present in Leishmania surface are an important class of molecules involved in parasite-macrophage interaction. The structural elucidation of Leishmania (Viannia) braziliensis promastigote glycolipids is very relevant because in this specie the glycolipids represent the major promastigote surface glycoconjugate. Six glycolipid fractions, terme
Publicado em: 2006
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14. ANÁLISE DE ANTICORPOS ANTI-GLICOLIPÍDEOS EM SOROS DE PACIENTES COM DOENÇA DE CHAGAS E PARACOCCIDIOIDOMICOSE. ESTUDOS E PROPRIEDADES DO ANTICORPO MONOCLONAL BST-1 DIRIGIDO A RESÍDUOS DE β-D-GALACTOFURANOSE DE Trypanosoma cruzi / Analysis of anti-glycolipids antibodies in sera of patients with Chagas disease and paracoccidioidomycosis. Studies and properties of monoclonal antibody BST-1 direct to β-D-galactofuranosyl residues of Trypanosoma cruzi
Nesta tese analisamos anticorpos presentes em soros de pacientes com paracoccidioidomicose (PCM) e doença de Chagas reativos com glicolipídeos contendo ou não resíduos de galactofuranose (Galf). Por ELISA, verificamos que 100% dos soros de pacientes com PCM foram reativos com o glicolipídeo Pb-1, isolado de Paracoccidioides brasiliensis, cuja estrutura
Publicado em: 2006
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15. Ácidos siálicos: da compreensão do seu envolvimento em processos biológicos ao desenvolvimento de fármacos contra o agente etiológico da gripe
Sialic acids are nine-carbon carbohydrates that occur widely in nature and occupy the terminal portions of some glycoproteins and glycolipids of cell membranes. These carbohydrates are closely involved in cell-cell interactions and in processes such as microbial infection, inflammation, etc. Studies on the participation of sialic acids in biological processe
Química Nova. Publicado em: 2005-03
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16. Efeito da adição farinha de soja desengordurada como fonte de lipoxigenase ativade soja nas caracteristicas reologicas ena distribuição dos lipidios na massa defarinha de trigo
The objective of this work was to study the effect of lipoxygenase from defatted soy bean flour on the rheological properties of doughs and on the composition of lipids in doughs and lipids bound to gluten and its fractions. The rheological tests indicated that the addiction of lipoxygenase improves the -dough strength. Upon addiction of lipoxygenase, increa
Publicado em: 1990
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17. Production and Properties of Antisera to Membrane Glycolipids of Mycoplasma pneumoniae
The glycolipid haptens of Mycoplasma pneumoniae became immunogenic when bound to membrane proteins of Acholeplasma laidlawii by reaggregation. This process consisted of the solubilization of lipid-depleted A. laidlawii membranes and M. pneumoniae glycolipids in 20 mm sodium dodecyl sulfate and dialysis of the mixed solutions against 20 mm Mg2+. The antibodie
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18. Comparison of the Chemical Structure and Biological Activities of the Glycolipids of Salmonella minnesota R595 and Salmonella typhimurium SL1102
It has been assumed in the past that the lipid moieties of endotoxic lipopolysaccharides are quite similar if not identical. This has been tested in the reported work here, where the chemical composition and biological activities of the glycolipids of two heptoseless Re mutants, Salmonella minnesota R595 and Salmonella typhimurium SL1102, have been studied a
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19. Role of Glycolipids and Phosphatidylglycerol in the Serological Activity of Mycoplasma pneumoniae
Mycoplasma pneumoniae lipids were fractionated by combined silicic acid and diethylaminoethyl-cellulose chromatography. The lipid fractions were tested for complement-fixing activity and for blocking of metabolism-inhibiting antibodies in human and rabbit antisera to M. pneumoniae. Thin-layer chromatography and carbohydrate analysis of hydrolysates of the li
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20. Binding specificities of wild-type and cloned Escherichia coli strains that recognize globo-A.
In this study we compared the specificity for the globoseries of glycolipids of Escherichia coli expressing the O-negative, A-positive (ONAP) adhesin and clones transformed with the pap-like (prs or pap-2) gene cluster. Receptor-active glycolipids were identified by the ability of radiolabeled bacteria to bind to the glycolipids on thin-layer chromatogram pl
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21. Cell Density-Dependent Changes of Glycolipid Concentrations in Fibroblasts, and Loss of This Response in Virus-Transformed Cells
The glycolipids of normal fibroblasts cells at different stages of growth and with differing degrees of susceptibility to contact inhibition have been analyzed, as well as the glycolipids of virally transformed cells. The concentrations (per mg protein) of certain glycolipids, including galactosylgalactosyl-glucosyl-, N-acetylneuraminosylgalactosylglucosyl-,
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22. Improved Method for the Isolation of Biosurfactant Glycolipids from Rhodococcus sp. Strain H13A
An improved method for the isolation of the biosurfactant glycolipids from Rhodococcus sp. strain H13A by using XM 50 diafiltration and isopropanol precipitation was devised. This procedure was advantageous since it removes protein coisolated when the glycolipids are obtained by organic extraction and silicic acid chromatography. The protein apparently does
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23. Age-related resistance to 987P fimbria-mediated colonization correlates with specific glycolipid receptors in intestinal mucus in swine.
Strains of enterotoxigenic Escherichia coli that produce 987P fimbriae (987P+ strains) colonize the small intestines and cause diarrhea in neonatal (< 6-day-old) pigs but not in weaned pigs. However, 987P+ E. coli strains adhere in vitro to intestinal epithelial cells from pigs of both ages. Two intestinal components, designated 987R and 987M, bind 987P fimb
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24. Relationship of structure to function in bacterial endotoxins. IX. Differences in the lipid moiety of endotoxic glycolipids.
Chemical, immunochemical, chromatographic, and endotoxic properties of five chromatographically pure glycolipids were compared. The preparations were extracted by chloroform-methanol from three Escherichia coli, one Salmonella minnesota, and one S. typhimurium Re heptoseless mutant strains. The local Shwartzman skin assay, the nonspecific resistance-enhancin