The in vitro activity of CA(1-7)M(2-9)NH(2), a 15-residue synthetic hybrid peptide derived from the sequences of cecropin A and melittin, alone and in combination with amoxicillin-clavulanate, imipenem, clarithromycin, ciprofloxacin, rifampin, and vancomycin, was investigated against 40 nosocomial isolates of methicillin-resistant Staphylococcus aureus. Antimicrobial activity of CA(1-7)M(2-9)NH(2) was measured by minimal inhibitory concentration, MBC, and time-kill studies. All isolates were inhibited at concentrations of 1 to 16 microg/mL. Combination studies performed with S. aureusATCC 43300 demonstrated synergy only when CA(1-7)M(2-9)NH(2) was combined with amoxicillin-clavulanate and imipenem. Our findings show that CA(1-7)M(2-9)NH(2) is active against methicillin-resistant S. aureusand that its activity is enhanced when it is combined with several antimicrobial agents.
In vitro activity and killing effect of the synthetic hybrid cecropin A-melittin peptide CA(1-7)M(2-9)NH(2) on methicillin-resistant nosocomial isolates of Staphylococcus aureus and interactions with clinically used antibiotics / Giacometti, Andrea; Cirioni, Oscar; Kamysz, W; D'Amato, G; Silvestri, Carmela; Simona Del Prete, M; Lukasiak, J; Scalise, Giorgio. - In: DIAGNOSTIC MICROBIOLOGY AND INFECTIOUS DISEASE. - ISSN 0732-8893. - STAMPA. - 49:3(2004), pp. 197-200. [10.1016/j.diagmicrobio.2004.02.008]
In vitro activity and killing effect of the synthetic hybrid cecropin A-melittin peptide CA(1-7)M(2-9)NH(2) on methicillin-resistant nosocomial isolates of Staphylococcus aureus and interactions with clinically used antibiotics.
GIACOMETTI, Andrea;CIRIONI, OSCAR;SILVESTRI, Carmela;SCALISE, Giorgio
2004-01-01
Abstract
The in vitro activity of CA(1-7)M(2-9)NH(2), a 15-residue synthetic hybrid peptide derived from the sequences of cecropin A and melittin, alone and in combination with amoxicillin-clavulanate, imipenem, clarithromycin, ciprofloxacin, rifampin, and vancomycin, was investigated against 40 nosocomial isolates of methicillin-resistant Staphylococcus aureus. Antimicrobial activity of CA(1-7)M(2-9)NH(2) was measured by minimal inhibitory concentration, MBC, and time-kill studies. All isolates were inhibited at concentrations of 1 to 16 microg/mL. Combination studies performed with S. aureusATCC 43300 demonstrated synergy only when CA(1-7)M(2-9)NH(2) was combined with amoxicillin-clavulanate and imipenem. Our findings show that CA(1-7)M(2-9)NH(2) is active against methicillin-resistant S. aureusand that its activity is enhanced when it is combined with several antimicrobial agents.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
