Sub-lethal concentrations of clarithromycin interfere with the expression of Staphylococcus aureus adhesiveness to human cells

P. C. Braga, G. Piatti

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

It has been known for some time that some antibiotics, generally at sub- lethal concentrations, are able to alter the morphology and the shape of bacteria. However, more subtle molecular alterations can also be present, such as disorganization of bacterial surface architecture, which leads to changes in the surface electrical charge that can influence the forces of attraction or repulsion responsible for interaction of bacterial surfaces with environmental surfaces. Bacterial adhesion to epithelial cells is a phenomenon regulated by these mechanisms. Clarithromycin, a new macrolide, at sub-inhibitory concentrations from 1/2 to 1/16 of the MIC, that is to say, from 0.12 to 0.015 μg/ml, significantly reduces adhesion of Staphylococcus aureus to human buccal epithelial cells. Clarithromycin, as other antibiotics that interfere with the bacterial protein synthesis, should also be able to disturb the synthesis of adhesins. These are ligand molecules located on the surface of bacteria, and thus reduce the ability of bacteria to bind specifically to complementary molecules on the surfaces of epithelial cells which is necessary for host colonization.

Original languageEnglish
Pages (from-to)159-163
Number of pages5
JournalJournal of Chemotherapy
Volume5
Issue number3
Publication statusPublished - 1993

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Adhesiveness
Clarithromycin
Staphylococcus aureus
Epithelial Cells
Bacteria
Bacterial Adhesion
Anti-Bacterial Agents
Bacterial Proteins
Cheek
Macrolides
Ligands

ASJC Scopus subject areas

  • Microbiology (medical)
  • Pharmacology (medical)

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Sub-lethal concentrations of clarithromycin interfere with the expression of Staphylococcus aureus adhesiveness to human cells. / Braga, P. C.; Piatti, G.

In: Journal of Chemotherapy, Vol. 5, No. 3, 1993, p. 159-163.

Research output: Contribution to journalArticle

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