In vitro activity of mastoparan-AF alone and in combination with clinically used antibiotics against multiple-antibiotic-resistant Escherichia coli isolates from animals |
| |
Authors: | Lin Chun-Hsien Hou Roger F Shyu Ching-Lin Shia Wei-Yau Lin Chuen-Fu Tu Wu-Chun |
| |
Institution: | Department of Entomology, National Chung Hsing University, Taichung 40227, Taiwan, ROC. |
| |
Abstract: | The in vitro activity of mastoparan-AF, an amphipathic antimicrobial peptide isolated from the hornet venom of Vespa affinis, alone and in combination with various clinically used antibiotics, was investigated against 21 Escherichia coli isolates/strains. Most E. coli isolates tested were detected containing multiple-antimicrobial resistance genes. Antimicrobial activity of mastoparan-AF was measured by MIC, MBC, time-kill kinetic assay and chequerboard titration method. Mastoparan-AF exhibited potent antimicrobial activity against most multiple-antibiotic-resistant E. coli isolates at the concentrations ranging from 4 to 16 μg/ml. Combination studies showed that mastoparan-AF acts synergistically with certain antibiotics, i.e., cephalothin or gentamicin, against some multiple-antibiotic-resistant E. coli isolates. In conclusion, mastoparan-AF alone or in combination with other antibiotics could be promising as alternatives for combating multiple-antibiotic-resistant E. coli in future clinical applications. |
| |
Keywords: | Mastoparan-AF Antimicrobial resistance gene Antimicrobial activity Antibiotic E coli Synergism |
本文献已被 ScienceDirect PubMed 等数据库收录! |
|