Phage therapy of Pseudomonas aeruginosa infection in a mouse burn wound model.

Department of Microbiology and Immunology, Texas Tech University Health Sciences Center, 3601 4th Street, Lubbock, TX 79430, USA.
Antimicrobial Agents and Chemotherapy (Impact Factor: 4.45). 07/2007; 51(6):1934-8. DOI: 10.1128/AAC.01028-06
Source: PubMed

ABSTRACT Mice compromised by a burn wound injury and subjected to a fatal infection with Pseudomonas aeruginosa were administered a single dose of a Pseudomonas aeruginosa phage cocktail consisting of three different P. aeruginosa phages by three different routes: the intramuscular (i.m.), subcutaneous (s.c.), or intraperitoneal (i.p.) route. The results of these studies indicated that a single dose of the P. aeruginosa phage cocktail could significantly decrease the mortality of thermally injured, P. aeruginosa-infected mice (from 6% survival without treatment to 22 to 87% survival with treatment) and that the route of administration was particularly important to the efficacy of the treatment, with the i.p. route providing the most significant (87%) protection. The pharmacokinetics of phage delivery to the blood, spleen, and liver suggested that the phages administered by the i.p. route were delivered at a higher dose, were delivered earlier, and were delivered for a more sustained period of time than the phages administered by the i.m. or s.c. route, which may explain the differences in the efficacies of these three different routes of administration.

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