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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Antimicrob+Agents+Chemother
2016 ; 60
(10
): 5663-72
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Screening a Commercial Library of Pharmacologically Active Small Molecules
against Staphylococcus aureus Biofilms
#MMPMID27401577
Torres NS
; Abercrombie JJ
; Srinivasan A
; Lopez-Ribot JL
; Ramasubramanian AK
; Leung KP
Antimicrob Agents Chemother
2016[Oct]; 60
(10
): 5663-72
PMID27401577
show ga
It is now well established that bacterial infections are often associated with
biofilm phenotypes that demonstrate increased resistance to common
antimicrobials. Further, due to the collective attrition of new antibiotic
development programs by the pharmaceutical industries, drug repurposing is an
attractive alternative. In this work, we screened 1,280 existing commercially
available drugs in the Prestwick Chemical Library, some with previously unknown
antimicrobial activity, against Staphylococcus aureus, one of the commonly
encountered causative pathogens of burn and wound infections. From the primary
screen of the entire Prestwick Chemical Library at a fixed concentration of 10
?M, 104 drugs were found to be effective against planktonic S. aureus strains,
and not surprisingly, these were mostly antimicrobials and antiseptics. The
activity of 18 selected repurposing candidates, that is, drugs that show
antimicrobial activity that are not already considered antimicrobials, observed
in the primary screen was confirmed in dose-response experiments. Finally, a
subset of nine of these drug candidates was tested against preformed biofilms of
S. aureus We found that three of these drugs, niclosamide, carmofur, and
auranofin, possessed antimicrobial activity against preformed biofilms, making
them attractive candidates for repurposing as novel antibiofilm therapies.