Abstract:
:Escherichia coli is a versatile pathogen causing millions of infections in humans every year. This bacterium can form multicellular aggregates when it expresses a self-associating protein, antigen 43 (Ag43), on its surface. We have discovered that Ag43-expressing E. coli cells are efficiently taken up by human defense cells, polymorphonuclear neutrophils (PMNs), in an opsonin-independent manner. Surprisingly, the phagocytosed bacteria were not immediately killed but resided as tight aggregates within the PMNs. Our observations indicate that Ag43-mediated uptake and survival in PMNs constitute a mechanism to subvert one of the primary defense mechanisms of the human body.
journal_name
Infect Immunjournal_title
Infection and immunityauthors
Fexby S,Bjarnsholt T,Jensen PØ,Roos V,Høiby N,Givskov M,Klemm Pdoi
10.1128/IAI.01117-06subject
Has Abstractpub_date
2007-01-01 00:00:00pages
30-4issue
1eissn
0019-9567issn
1098-5522pii
IAI.01117-06journal_volume
75pub_type
杂志文章abstract::Previous passive antibody transfer experiments have indicated that immunity to a 46-kilodalton membrane glycoprotein (M-2) of Leishmania amazonensis may protect against infection with this parasite. In the studies described in this paper, we investigated the ability of the purified M-2 molecule to elicit a protective ...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.56.12.3272-3279.1988
更新日期:1988-12-01 00:00:00
abstract::Cell walls from Streptococcus mutans were prepared by conventional technique and subjected to a series of extraction procedures involving classical protein solvents. The extracted walls contained several non-peptidoglycan amino acids and were also amenable to radiolabeling with [125I]sodium iodide and chloramine T. Th...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.28.1.118-126.1980
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.74.2.1032-1042.2006
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.00409-18
更新日期:2019-07-23 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.59.11.4110-4116.1991
更新日期:1991-11-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.29.1.114-118.1980
更新日期:1980-07-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.39.1.132-136.1983
更新日期:1983-01-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/iai.68.5.2925-2929.2000
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.32.2.641-648.1981
更新日期:1981-05-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.60.1.90-94.1992
更新日期:1992-01-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/iai.72.5.2803-2809.2004
更新日期:2004-05-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.67.5.2319-2326.1999
更新日期:1999-05-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.01236-09
更新日期:2010-05-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.01360-10
更新日期:2011-07-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.12.4.841-850.1975
更新日期:1975-10-01 00:00:00
abstract::Strains of Bacteroides fragilis associated with diarrhea in children (termed enterotoxigenic B. fragilis, or ETBF) produce a heat-labile ca. 20-kDa protein toxin (BFT). The purpose of this study was to examine the activity of BFT on polarized monolayers of human intestinal epithelial cells (T84 cells). In Ussing chamb...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.65.9.3561-3570.1997
更新日期:1997-09-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.54.3.899-902.1986
更新日期:1986-12-01 00:00:00
abstract::Evidence obtained from gene knockout studies supports the role of Toll-like receptor 4 (TLR4) in intestinal inflammation and microbiota recognition. Increased epithelial TLR4 expression is observed in patients with inflammatory bowel disease. However, little is known of the effect of increased TLR4 signaling on intest...
journal_title:Infection and immunity
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doi:10.1128/IAI.01374-15
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journal_title:Infection and immunity
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doi:10.1128/IAI.1.6.521-525.1970
更新日期:1970-06-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.48.3.607-610.1985
更新日期:1985-06-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.65.5.1842-1848.1997
更新日期:1997-05-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.72.12.7063-7072.2004
更新日期:2004-12-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
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更新日期:2012-10-01 00:00:00
abstract::Burkholderia cepacia is an opportunistic pathogen that causes severe systemic infections in patients with chronic granulomatous disease (CGD) or with cystic fibrosis (CF), but its mechanisms of virulence are poorly understood. We developed a murine model of systemic infection in wild-type (WT) and gamma interferon kno...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.67.8.4027-4032.1999
更新日期:1999-08-01 00:00:00
abstract::Cell surface protein SSP-5 in the oral bacterium Streptococcus gordonii M5 binds human salivary agglutinin in a Ca(2+)-dependent reaction (D.R. Demuth, E.E. Golub, and D. Malamud, J. Biol. Chem. 265:7120-7126, 1990). The region of the gene encoding an N-terminal segment of a related polypeptide (SspA) in S. gordonii D...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.61.8.3199-3208.1993
更新日期:1993-08-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.00142-09
更新日期:2009-09-01 00:00:00
abstract::In previous work (Jones, Infect, Immun. 30:78-89, 1980) a major cytoplasmic antigen of Candida albicans was identified. In both humans and experimental animals, this antigen is released from C. albicans during the course of an invasive C. albicans infection and elicits a specific antibody response. In this study, we u...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.34.2.469-477.1981
更新日期:1981-11-01 00:00:00
abstract::Genetically based natural resistance to brucellosis in cattle provides for novel strategies to control zoonotic diseases. Bovine NRAMP1, the homologue of a murine gene (Bcg), has been identified as a major candidate for controlling the in vivo resistant phenotype. We developed an in vitro model for expression of resis...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.69.5.3110-3119.2001
更新日期:2001-05-01 00:00:00