PMID- 11748184 OWN - NLM STAT- MEDLINE DCOM- 20020114 LR - 20220330 IS - 0019-9567 (Print) IS - 1098-5522 (Electronic) IS - 0019-9567 (Linking) VI - 70 IP - 1 DP - 2002 Jan TI - Bacteriophage therapy rescues mice bacteremic from a clinical isolate of vancomycin-resistant Enterococcus faecium. PG - 204-10 AB - Colonization of the gastrointestinal tract with vancomycin-resistant Enterococcus faecium (VRE) has become endemic in many hospitals and nursing homes in the United States. Such colonization predisposes the individual to VRE bacteremia and/or endocarditis, and immunocompromised patients are at particular risk for these conditions. The emergence of antibiotic-resistant bacterial strains requires the exploration of alternative antibacterial therapies, which led our group to study the ability of bacterial viruses (bacteriophages, or phages) to rescue mice with VRE bacteremia. The phage strain used in this study has lytic activity against a wide range of clinical isolates of VRE. One of these VRE strains was used to induce bacteremia in mice by intraperitoneal (i.p.) injection of 10(9) CFU. The resulting bacteremia was fatal within 48 h. A single i.p. injection of 3 x 10(8) PFU of the phage strain, administered 45 min after the bacterial challenge, was sufficient to rescue 100% of the animals. Even when treatment was delayed to the point where all animals were moribund, approximately 50% of them were rescued by a single injection of this phage preparation. The ability of this phage to rescue bacteremic mice was demonstrated to be due to the functional capabilities of the phage and not to a nonspecific immune effect. The rescue of bacteremic mice could be effected only by phage strains able to grow in vitro on the bacterial host used to infect the animals, and when such strains are heat inactivated they lose their ability to rescue the infected mice. FAU - Biswas, Biswajit AU - Biswas B AD - National Institutes of Health, Bethesda, Maryland 20892, USA. FAU - Adhya, Sankar AU - Adhya S FAU - Washart, Paul AU - Washart P FAU - Paul, Brian AU - Paul B FAU - Trostel, Andrei N AU - Trostel AN FAU - Powell, Bradford AU - Powell B FAU - Carlton, Richard AU - Carlton R FAU - Merril, Carl R AU - Merril CR LA - eng PT - Journal Article PL - United States TA - Infect Immun JT - Infection and immunity JID - 0246127 RN - 0 (Antibodies, Viral) SB - IM EIN - Infect Immun 2002 Mar;70(3):1664 MH - Animals MH - Antibodies, Viral/blood/immunology MH - Bacteremia/*therapy MH - Bacteriophages/immunology/*physiology/ultrastructure MH - Disease Models, Animal MH - Enterococcus faecium/growth & development/*virology MH - Female MH - Gram-Positive Bacterial Infections/*therapy MH - Heating MH - Humans MH - Mice MH - Mice, Inbred BALB C MH - Microscopy, Electron MH - Time Factors MH - *Vancomycin Resistance PMC - PMC127648 EDAT- 2001/12/19 10:00 MHDA- 2002/01/15 10:01 PMCR- 2002/01/01 CRDT- 2001/12/19 10:00 PHST- 2001/12/19 10:00 [pubmed] PHST- 2002/01/15 10:01 [medline] PHST- 2001/12/19 10:00 [entrez] PHST- 2002/01/01 00:00 [pmc-release] AID - 1213 [pii] AID - 10.1128/IAI.70.1.204-210.2002 [doi] PST - ppublish SO - Infect Immun. 2002 Jan;70(1):204-10. doi: 10.1128/IAI.70.1.204-210.2002.