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Investigation of the in vitro antifungal and antibiofilm activities of ceragenins CSA-8, CSA-13, CSA-44, CSA-131, and CSA-138 against Candida species.

Abstract：

:Cationic steroid antimicrobials (CSA-ceragenin) are a new class of antimicrobial agent. In vitro activities of CSA-8, CSA-13, CSA-44, CSA-131, and CSA-138 and amphotericin B (AMP-B) were assessed against 50 nonrepeat Candida spp. isolates MICs, MFCs and combination studies were determined. Antibiofilm activities of CSAs, AMP-B, 2 azoles, and 2 echinocandins against Candida albicans were performed. Also, effects of coating the wells of plate with selected CSAs and antifungals were measured. The MIC50 (μg/mL) values of CSA-8, CSA-13, CSA-44, CSA-131, CSA-138, and AMP-B were 16, 1, 2, 1, 1, and 1, respectively. The MFCs were equal to or 2-fold greater than those of the MICs. Synergistic interactions were mostly seen with CSA-13+ AMP-B combination, whereas the least synergistic interactions were observed with the CSA-131+ AMP-B combination. CSAs inhibited the attachment of Candida biofilms. The studied CSAs and antifungals inhibited C. albicans biofilm formation. In conclusion, CSA-13, CSA-131, and CSA-138 appear to be good candidates (alone or in combination) in the treatment of Candida infections as well as biofilm-related ones.

journal_name

Diagn Microbiol Infect Dis

journal_title

Diagnostic microbiology and infectious disease

authors

Bozkurt-Guzel C,Hacioglu M,Savage PB

doi

10.1016/j.diagmicrobio.2018.03.014

subject

Has Abstract

pub_date

2018-08-01 00:00:00

pages

324-330

issue

4

eissn

0732-8893

issn

1879-0070

pii

S0732-8893(18)30104-4

journal_volume

91

pub_type

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