Presence and expression of collagen adhesin gene (cna) and slime production in Staphylococcus aureus strains from orthopaedic prosthesis infections

Lucio Montanaro, Carla Renata Arciola, Lucilla Baldassarri, Elena Borsetti

Research output: Contribution to journalArticlepeer-review

Abstract

Prosthesis-associated infections still represent one of the most serious complications in the clinical use of biomaterials. The most frequent causes are Staphylococcus aureus and Staphylococcus epidermidis. Several studies have been devoted to identify adhesion mechanisms for these bacteria. Slime in particular has been extensively investigated. Recently, in Staphylococcus aureus species, considerable attention has been given to the host protein receptors that have been shown in in vitro assays to serve as substrates for bacterial adhesion. Collagen-rich tissues, as bone and cartilage, that are the preferential sites of staphylococcal infections, are also the tissues that harbour orthopaedic implants. These can be easily coated in vivo by collagen and thus become prone to adhesion of Staphylococci strains which carry the collagen adhesin gene (cna). In this study the frequency of cna was determined within a collection of 35 Staphylococcus aureus strains from orthopaedic prosthesis infections by a PCR method. Also the collagen-binding ability and slime forming capacity was evaluated. 29% of the strains were cna-positive and also able to bind collagen in vitro. 83% of the strains were slime forming. The results indicate that in the examined bacterial population slime-positive strains predominate over the cna-positive strains, with a striking association of the two adhesion mechanisms in cna-positive strains. Copyright (C) 1999 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)1945-1949
Number of pages5
JournalBiomaterials
Volume20
Issue number20
DOIs
Publication statusPublished - Oct 1999

Keywords

  • Bacterial adhesion
  • Biomaterial-associated infection
  • Collagen adhesin gene (cna)
  • Polymerase chain reaction (PCR)
  • Slime
  • Staphylococcus aureus

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Biomedical Engineering

Fingerprint Dive into the research topics of 'Presence and expression of collagen adhesin gene (cna) and slime production in Staphylococcus aureus strains from orthopaedic prosthesis infections'. Together they form a unique fingerprint.

Cite this