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2008 | 57 | 3 |

Tytuł artykułu

Anti-phagocytic activity of Helicobacter pylori lipopolysaccharide [LPS] - possible modulation of the innate immune response to these bacteria

Warianty tytułu

Języki publikacji

EN

Abstrakty

EN
The Helicobacter pylori infections are followed by an infiltration of the gastric mucosa by neutrophils and macrophages. Accumulation of phagocytes enables them to interact with H. pylori, but a great number of infected subjects cannot eradicate these bacteria. The H. pylori inhibits its own uptake by blocking the function of phagocytes. The anti-phagocytic mechanism depends on bacterial surface structures and the presence of the cag pathogenicity island (PAI). The role of H. pylori lipopolysaccharide (LPS), during phagocytosis of these bacteria is not clear. LPS may mediate direct bacteria/phagocyte interactions and it may also regulate antibacterial activity of the phagocytes. In this study we investigated the influence of H. pylori LPS on phagocytosis of these bacteria. The H. pylori LPS inhibited an ingestion of these microbes by human peripheral blood granulocytes. This was correlated with a diminished ability of phagocytes to reduce MTT-tetrazolium salt. The anti-phagocytic effect of H. pylori LPS was reduced by recombinant lipopolysaccharide binding protein (rLBP). It is possible that in vivo H. pylori LPS may diminish elimination of these bacteria from the gastric mucosa promoting an infection persistence. However, LBP may modulate the uptake of H. pylori due to neutralization of anti-phagocytic effect of its LPS.

Wydawca

-

Rocznik

Tom

57

Numer

3

Opis fizyczny

p.185-192,fig.,ref.

Twórcy

autor
  • University of Lodz, Banacha 12/16, 90-237 Lodz, Poland
autor
autor
autor
autor
autor

Bibliografia

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Bibliografia

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