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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
2015 ; 59
(3
): 1751-4
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In vitro spectrum of pexiganan activity when tested against pathogens from
diabetic foot infections and with selected resistance mechanisms
#MMPMID25583717
Flamm RK
; Rhomberg PR
; Simpson KM
; Farrell DJ
; Sader HS
; Jones RN
Antimicrob Agents Chemother
2015[Mar]; 59
(3
): 1751-4
PMID25583717
show ga
Pexiganan, a 22-amino-acid synthetic cationic peptide, is currently in phase 3
clinical trials as a topical antimicrobial agent for the treatment of mild
infections associated with diabetic foot ulcers. Bacterial isolates from the 2013
SENTRY Antimicrobial Surveillance Program designated as pathogens from diabetic
foot infections (DFI) and Gram-negative and -positive pathogens from various
infection types that harbored selected resistance mechanisms/phenotypes were
tested against pexiganan in reference cation-adjusted Mueller-Hinton broth. The
MIC50 and MIC90 against all organisms tested from DFI were 16 and 32 ?g/ml,
respectively. Escherichia coli, Klebsiella pneumoniae, Citrobacter koseri,
Enterobacter cloacae, Acinetobacter species, and Pseudomonas aeruginosa MIC
values ranged from 8 to 16 ?g/ml. Pexiganan MIC values among Staphylococcus
aureus (methicillin-resistant S. aureus [MRSA] and methicillin-susceptible S.
aureus [MSSA]), beta-hemolytic streptococci, and Enterococcus faecium ranged from
8 to 32 ?g/ml. Pexiganan activity was not adversely affected for members of the
family Enterobacteriaceae or P. aeruginosa that produced ?-lactamases or
resistance mechanisms to other commonly used antimicrobial agents. Decreased
susceptibility to vancomycin did not affect pexiganan activity against S. aureus
or E. faecium. Enterococcus faecalis appears to be intrinsically less susceptible
to pexiganan (MIC, 32 to 256 ?g/ml). The "all organism" MIC90 of 32 ?g/ml for
pexiganan in this study was >250-fold below the pexiganan concentration in the
cream/delivery vehicle being developed for topical use.