Life at the margins: modulation of attachment proteins in Helicobacter pylori.
Gut Microbes
; 2(1): 42-6, 2011.
Article
em En
| MEDLINE
| ID: mdl-21637017
ABSTRACT
Helicobacter pylori is the primary cause of peptic ulcer disease and is estimated to account for about 60% of all cases of gastric cancer, the second most common cause of cancer death worldwide. Among the H. pylori virulence factors associated with disease, in addition to the well-known cag pathogenicity island, is the BabA adhesin, an outer membrane protein that binds with high affinity to fucosylated glycans on the gastric epithelium, such as Lewis B (Le(b)) and related terminal fucose residues found on the blood group O (H antigen), A and B antigens. BabA-mediated attachment to the gastric mucosa promotes chronic inflammation and gastric pathology, which from the bacterial perspective carries both risks and benefits. We recently described modulation in expression of BabA and related outer membrane proteins that occurs during colonization of experimental animals. Here we put these findings into a broader context, and speculate on their implications for the host-pathogen relationship.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Proteínas da Membrana Bacteriana Externa
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Aderência Bacteriana
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Regulação Bacteriana da Expressão Gênica
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Helicobacter pylori
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Interações Hospedeiro-Patógeno
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Mucosa Gástrica
Idioma:
En
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
Estados Unidos