%0 Journal Article
%A Blasco, Lucia
%A Ambroa, Anton
%A Lopez, Maria
%A Fernandez-Garcia, Laura
%A Bleriot, Ines
%A Trastoy, Rocio
%A Ramos-Vivas, Jose
%A Coenye, Tom
%A Fernandez-Cuenca, Felipe
%A Vila, Jordi
%A Martinez-Martinez, Luis
%A Rodriguez-Baño, Jesus
%A Pascual, Alvaro
%A Cisneros, Jose Miguel
%A Pachon, Jeronimo
%A Bou, German
%A Tomas, Maria
%T Combined Use of the Ab105-2φΔCI Lytic Mutant Phage and Different Antibiotics in Clinical Isolates of Multi-Resistant Acinetobacter baumannii.
%D 2019
%@ 2076-2607
%U http://hdl.handle.net/10668/14690
%X Phage therapy is an abandoned antimicrobial therapy that has been resumed in recent years. In this study, we mutated a lysogenic phage from cinetobacter baumannii into a lytic phage (Ab105-2phi∆CI) that displayed antimicrobial activity against A. baumannii clinical strain Ab177_GEIH-2000 (isolated in the GEIH-REIPI Spanish Multicenter A. baumannii Study II 2000/2010, Umbrella Genbank Bioproject PRJNA422585, and for which meropenem and imipenem MICs of respectively, 32 µg/mL, and 16 µg/mL were obtained). We observed an in vitro synergistic antimicrobial effect (reduction of 4 log–7 log CFU/mL) between meropenem and the lytic phage in all combinations analyzed (Ab105-2phi∆CI mutant at 0.1, 1 and 10 MOI and meropenem at 1/4 and 1/8 MIC). Moreover, bacterial growth was reduced by 8 log CFU/mL for the combination of imipenem at 1/4 MIC plus lytic phage (Ab105-2phi∆CI mutant) and by 4 log CFU/mL for the combination of imipenem at 1/8 MIC plus lytic phage (Ab105-2phi∆CI mutant) at both MOI 1 and 10. These results were confirmed in an in vivo model (G. mellonella), and the combination of imipenem and mutant Ab105-2phi∆CI was most effective (p < 0.05). This approach could help to reduce the emergence of phage resistant bacteria and restore sensitivity to antibiotics used to combat multi-resistant strains of Acinetobacter baumannii.
%K Acinetobacter baumannii
%K Antibiotic-phage synergy
%K Multiresistant
%K Mutant lytic phage
%K Phage therapy
%~