In light of the need for new antifungals, we compared the in vitro antifungal activity of two peptides derived from human lactoferrin (hLF), i.e., hLF(1-11) and hLF(21-31), two analogs of histatin 5, further referred to as dhvar4 and dhvar5, and two ubiquicidin (UBI)-derived peptides, i.e., UBI 18-35 and UBI 29-41, with that of amphotericin B against Aspergillus fumigatus hyphae using the MTT assay. The results revealed a dose-dependent antifungal activity for all peptides, with dhvar5 being the most potent peptide. In addition, hLF(1-11), dhvar5, and UBI 18-35 were effective against A. fumigatus conidia. Furthermore, hLF(1-11) did not lyze human erythrocytes, whereas dhvar5 (>or=16 microM) and UBI 18-35 (>or=20 microM) were hemolytic. Based on these in vitro results and their effectiveness against infections in mice, we concluded that hLF(1-11) and dhvar5 are promising candidates for the development of new agents against A. fumigatus infections.
|Autori:||LUPETTI A; J.T. VAN DISSEL; C.P.J.M. BROUWER; P.H. NIBBERING|
|Titolo:||Human antimicrobial peptides’ antifungal activity against Aspergillus fumigatus|
|Anno del prodotto:||2008|
|Digital Object Identifier (DOI):||10.1007/s10096-008-0553-z|
|Appare nelle tipologie:||1.1 Articolo in rivista|