Topical liquid formulation of bacteriophages for metered-dose spray delivery

[Display omitted] Bacteriophage (phage) therapy is a promising treatment strategy to combat antibiotic-resistant bacteria. Clinical reports from a century ago, as well as recent reports have revealed safety and efficacy of phage therapy for bacterial wound infections. However, the conventional liqui...

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Veröffentlicht in:European journal of pharmaceutics and biopharmaceutics 2022-08, Vol.177, p.1-8
Hauptverfasser: Chang, Rachel Yoon Kyung, Okamoto, Yuko, Morales, Sandra, Kutter, Elizabeth, Chan, Hak-Kim
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container_title European journal of pharmaceutics and biopharmaceutics
container_volume 177
creator Chang, Rachel Yoon Kyung
Okamoto, Yuko
Morales, Sandra
Kutter, Elizabeth
Chan, Hak-Kim
description [Display omitted] Bacteriophage (phage) therapy is a promising treatment strategy to combat antibiotic-resistant bacteria. Clinical reports from a century ago, as well as recent reports have revealed safety and efficacy of phage therapy for bacterial wound infections. However, the conventional liquid phage formulation and delivery platforms reported lack of dose control as it easily runs off from the infection site and it is impossible to determine total volume transfer. The aim of this study was to formulate phage liquids for topical delivery using a metered-dose spray. Two types of anti-Pseudomonas phages, PEV1 (myovirus) and PEV31 (podovirus) were formulated in 35% ethanol in water containing non-ionic polymers. The formulations were evaluated for physical properties, ease of spray, dripping upon spraying, drying time, in vitro release profiles, antibacterial activity, and storage stability. The optimized phage-polymer spray formulations were easily sprayable with minimal dripping and fast drying time. Phages were rapidly released from the formulation and inhibited the growth of Pseudomonas aeruginosa. Both PEV1 and PEV31 remained biologically stable in the optimized formulations during storage at 4 °C for eight weeks. This study showed the topical spray formulations containing non-ionic polymers in ethanol/water could be a promising and innovative therapeutic system for delivering phages.
doi_str_mv 10.1016/j.ejpb.2022.05.014
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subjects Bacteriophage (phage) therapy
Formulation
Phage spray
Pseudomonas aeruginosa
Topical treatment
Wound infections
title Topical liquid formulation of bacteriophages for metered-dose spray delivery
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