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Severe streptococca...
Severe streptococcal infection is associated with M protein-induced platelet activation and thrombus formation.
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- Shannon, Oonagh (författare)
- Lund University,Lunds universitet,Infektionsmedicin,Sektion III,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,SEBRA Sepsis and Bacterial Resistance Alliance,Forskargrupper vid Lunds universitet,epIgG,Infection Medicine (BMC),Section III,Department of Clinical Sciences, Lund,Faculty of Medicine,Lund University Research Groups
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- Hertzén, Erika (författare)
- Karolinska Institutet
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- Norrby-Teglund, Anna (författare)
- Karolinska Institutet
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- Mörgelin, Matthias (författare)
- Lund University,Lunds universitet,Infektionsmedicin,Sektion III,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Infection Medicine (BMC),Section III,Department of Clinical Sciences, Lund,Faculty of Medicine
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- Sjöbring, Ulf (författare)
- Lund University,Lunds universitet,Avdelningen för mikrobiologi, immunologi och glykobiologi - MIG,Institutionen för laboratoriemedicin,Medicinska fakulteten,Division of Microbiology, Immunology and Glycobiology - MIG,Department of Laboratory Medicine,Faculty of Medicine
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- Björck, Lars (författare)
- Lund University,Lunds universitet,Infektionsmedicin,Sektion III,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,epIgG,Forskargrupper vid Lunds universitet,Infection Medicine (BMC),Section III,Department of Clinical Sciences, Lund,Faculty of Medicine,Lund University Research Groups
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(creator_code:org_t)
- Wiley, 2007
- 2007
- Engelska.
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Ingår i: Molecular Microbiology. - : Wiley. - 1365-2958 .- 0950-382X. ; 65:5, s. 1147-1157
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http://www.ncbi.nlm....
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Disturbed haemostasis is a central finding in severe Streptococcus pyogenes infection. In particular, microthrombi are found both at the local site of infection and at distant sites. Platelets are responsible for maintaining vascular function and haemostasis. We report here that M1 protein of S. pyogenes triggers immune-mediated platelet activation and thrombus formation. M1 protein is released from the bacterial surface and forms complexes with plasma fibrinogen. These complexes bind to the fibrinogen receptor on resting platelets. When these complexes also contain immunoglobulin G (IgG) against M1 protein, this will engage the Fc receptor on the platelets and activation will occur. Activation of the platelets leads to platelet aggregation and the generation of platelet-rich thrombi. Neutrophils and monocytes are in turn activated by the platelets. Platelet thrombi are deposited in the microvasculature, and aggregated platelets, IgG and M1 protein colocalize in biopsies from patients diagnosed with S. pyogenes toxic shock syndrome. This chain of events results in a procoagulant and pro-inflammatory state typical of severe S. pyogenes infection.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Mikrobiologi inom det medicinska området (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Microbiology in the medical area (hsv//eng)
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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