Polymicrobial antibiofilm activity of the membranotropic peptide gH625 and its analogue.

Abstract:

:This work illustrates a new role for the membranotropic peptide gH625 and its derivative gH625-GCGKKK in impairing formation of polymicrobial biofilms. Mixed biofilms composed of Candida and bacterial species cause frequently infections and failure of medical silicone devices and also show a major drug resistance than single-species biofilms. Inhibition and eradication of biofilms were evaluated by complementary methods: XTT-reduction, and crystal violet staining (CV). Our results indicate that gH625-GCGKKKK, better than the native peptide, strongly inhibited formation of mixed biofilms of clinical isolates of C. tropicalis/S. marcescens and C. tropicalis/S. aureus and reduced the biofilm architecture, interfering with cell adhesion and polymeric matrix, as well as eradicated the long-term polymicrobial biofilms on silicone surface.

journal_name

Microb Pathog

journal_title

Microbial pathogenesis

authors

de Alteriis E,Lombardi L,Falanga A,Napolano M,Galdiero S,Siciliano A,Carotenuto R,Guida M,Galdiero E

doi

10.1016/j.micpath.2018.09.027

subject

Has Abstract

pub_date

2018-12-01 00:00:00

pages

189-195

eissn

0882-4010

issn

1096-1208

pii

S0882-4010(18)31168-9

journal_volume

125

pub_type

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