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Volume 38, Issue 2

Role of fibronectin in staphylococcal colonisation of fibrin thrombi and plastic surfaces Free

Abstract

Summary

The adhesive glycoprotein fibronectin has been proposed as a mediator of adherence of certain gram-positive cocci to host cells and fibrin thrombi. This study compared the role of soluble and immobilised fibronectin in the adherence of coagulasenegative staphylococci (CNS) and to fibrin thrombi and plastic surfaces. Adherence of to fibrin thrombi was significantly reduced when fibronectin was removed from the plasma used for thrombus preparation. Adherence was restored through restitution of fibronectin. also adhered substantially more to plastic surface coated with fibronectin than to non-coated plastic. Increased adherence of CNS to plastic was also observed after coating with the 29-kDa N-terminal fragment of fibronectin. Soluble fibronectin did not affect the adherence of CNS to fibrin thrombi or plastic surfaces. The adherence of to fibrin thrombi was significantly increased by the addition of soluble fibronectin, but not by incorporation of fibronectin into the clot. These results indicate that the binding of fibronectin is an important factor in the adherence of staphylococci to fibrin clots and plastic surfaces and, thus, colonisation of these surfaces. However, the two species of staphylococci seem to employ different mechanisms of fibronectin-mediated adherence: interacts mainly with fibronectin incorporated in fibrin clots or immobilised on implanted synthetic materials, whereas adheres to the fibrin matrix through binding of soluble fibronectin present in wound exudates.

  • Received:
  • Accepted:
  • Published Online:
© Society for General Microbiology, 1993
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1993-02-01
2024-04-24
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Role of fibronectin in staphylococcal colonisation of fibrin thrombi and plastic surfaces
J. Med. Microbiol. 38, 90 (1993); https://doi.org/10.1099/00222615-38-2-90
/content/journal/jmm/10.1099/00222615-38-2-90
/content/journal/jmm/10.1099/00222615-38-2-90
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