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> (2005) >
Helicobacter pylori...
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Brisslert, Mikael,1974Gothenburg University,Göteborgs universitet,Institutionen för invärtesmedicin, Avdelningen för reumatologi och inflammationsforskning,Institute of Internal Medicine, Dept of Rheumatology and Inflammation Research
(författare)
Helicobacter pylori induce neutrophil transendothelial migration: role of the bacterial HP-NAP
- Artikel/kapitelEngelska2005
Förlag, utgivningsår, omfång ...
Nummerbeteckningar
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LIBRIS-ID:oai:gup.ub.gu.se/40833
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https://gup.ub.gu.se/publication/40833URI
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Klassifikation
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
Anmärkningar
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Continuous recruitment of neutrophils into the inflamed gastric mucosal tissue is a hallmark of Helicobacter pylori infection in humans. In this study, we examined the ability of H. pylori to induce transendothelial migration of neutrophils using a transwell system consisting of a cultured monolayer of human endothelial cells as barrier between two chambers. We showed for the first time that live H. pylori, but not formalin-killed bacteria, induced a significantly increased transendothelial migration of neutrophils. H. pylori conditioned culture medium also induced significantly increased transendothelial migration, whereas heat-inactivated culture filtrates had no effect, suggesting that the chemotactic factor was proteinaceous. Depletion of H. pylori-neutrophil activating protein (HP-NAP) from the culture filtrates resulted in significant reduction of the transmigration. Culture filtrates from isogenic HP-NAP deficient mutant bacteria also induced significantly less neutrophil migration than culture filtrates obtained from wild-type bacteria. HP-NAP did not induce endothelial cell activation, suggesting that HP-NAP acts directly on the neutrophils. In conclusion, our results demonstrate that secreted HP-NAP is one of the factors resulting in H. pylori induced neutrophil transendothelial migration. We propose that HP-NAP contributes to the continuous recruitment of neutrophils to the gastric mucosa of H. pylori infected individuals.
Ämnesord och genrebeteckningar
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Bacterial Proteins/genetics/*metabolism/pharmacology
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Cells
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Cultured
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Chemotactic Factors/genetics/metabolism/pharmacology
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Chemotaxis
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Leukocyte/*drug effects
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Endothelial Cells/*immunology
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Endothelium
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Vascular/cytology/immunology
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Helicobacter pylori/genetics/*immunology/metabolism
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Humans
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Neutrophil Activation/immunology
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Neutrophils/*immunology
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Research Support
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Non-U.S. Gov't
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Enarsson, Karin,1975Gothenburg University,Göteborgs universitet,Institutionen för medicinsk mikrobiologi och immunologi,Institute of Medical Microbiology/Immunology(Swepub:gu)xenaka
(författare)
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Lundin, Samuel B,1970Gothenburg University,Göteborgs universitet,Institutionen för medicinsk mikrobiologi och immunologi,Institute of Medical Microbiology/Immunology(Swepub:gu)xlusam
(författare)
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Karlsson, Anna,1967Gothenburg University,Göteborgs universitet,Institutionen för invärtesmedicin, Avdelningen för reumatologi och inflammationsforskning,Institute of Internal Medicine, Dept of Rheumatology and Inflammation Research(Swepub:gu)xkannb
(författare)
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Kusters, J. G.
(författare)
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Svennerholm, Ann-Mari,1947Gothenburg University,Göteborgs universitet,Institutionen för medicinsk mikrobiologi och immunologi,Institute of Medical Microbiology/Immunology(Swepub:gu)xsannx
(författare)
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Backert, S.
(författare)
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Quiding-Järbrink, Marianne,1964Gothenburg University,Göteborgs universitet,Institutionen för medicinsk mikrobiologi och immunologi,Institute of Medical Microbiology/Immunology(Swepub:gu)xquima
(författare)
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Göteborgs universitetInstitutionen för invärtesmedicin, Avdelningen för reumatologi och inflammationsforskning
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:FEMS Microbiol Lett249:1, s. 95-103
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