Quebrachitol from Rhizophora mucronata inhibits biofilm formation and virulence production in Staphylococcus epidermidis by impairment of initial attachment and intercellular adhesion.

Archives of Microbiology
Vijayakumar Karuppiah, Ramanathan Thirunanasambandham

Abstract

Staphylococcus epidermidis is well recognized nosocomial pathogen in clinical settings for their implants associated infections. Biofilm and virulence production executes a S. epidermidis pathogenesis against host. Hence, interfering of biofilm formation has become an auspicious to control the pathogenesis of S. epidermidis. The present study evaluates antibiofilm potential of Rhizophora mucronata against S. epidermidis biofilms. Rhizophora mucronata leaves extract significantly inhibited the biofilm formation and quebrachitol was identified as an active compound responsible for the biofilm inhibition. Quebrachitol significantly inhibited biofilm formation at concentration dependent manner without exhibit non-bactericidal property. And, quebrachitol reduced the biofilm building components such as exopolysaccharides, lipase and proteins production. Confocal laser scanning microscopic studies obtained quebrachitol surface independent biofilm efficacy against S. epidermidis. Notably, quebrachitol significantly reduced S. epidermidis adherence on biotic (coated with type I collagen and fibrinogen) and abiotic (hydrophobic and hydrophilic) surfaces. Addition of quebrachitol inhibits autolysis mediated initial attachment and accumula...Continue Reading

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Methods Mentioned

BETA
column chromatography
PCR

Software Mentioned

SPSS
primer3

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