Evidence map›Paper›PMID 33486032›Full record

ArticleInternational journal of pharmaceutics2021

Phage cocktail powder for Pseudomonas aeruginosa respiratory infections.

Mengyu Li, Rachel Yoon Kyung Chang, Yu Lin, Sandra Morales, Elizabeth Kutter, Hak-Kim Chan

Abstract read
In one paragraph

Article in International journal of pharmaceutics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

25 citing papers in PubMed.

  1. Article
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  13. Phage therapy: breathing new tactics into lower respiratory tract infection treatments.European respiratory review : an official journal of the European Respiratory Society · 2024
    Review
  14. Review
  15. Review
  16. Article
  17. Article
  18. Review
  19. Phage therapy for pulmonary infections: lessons from clinical experiences and key considerations.European respiratory review : an official journal of the European Respiratory Society · 2022
    Review
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Mengyu LiAdvanced Drug Delivery Group, School of Pharmacy, Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia.
Rachel Yoon Kyung ChangAdvanced Drug Delivery Group, School of Pharmacy, Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia.
Yu LinAdvanced Drug Delivery Group, School of Pharmacy, Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia.
Sandra MoralesPhage Consulting, Sydney, New South Wales, Australia.
Elizabeth KutterThe Evergreen State College, Olympia, WA, USA.
Hak-Kim ChanAdvanced Drug Delivery Group, School of Pharmacy, Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia. Electronic address: kim.chan@sydney.edu.au.

Funding

Harnessing bacteriophages as natural predators to combat the superbugs: a pulmonary drug delivery approachR33AI121627 · NIAID · UNIVERSITY OF SYDNEY · PI CHAN, KIM · 2018 to 2020
$598k
NIAID NIH HHS R33 AI121627
6 · The paper itself

Abstract

Phage cocktail broadens the host range compared with a single phage and minimizes the development of phage-resistant bacteria thereby promoting the long-term usefulness of inhaled phage therapy. In this study, we produced a phage cocktail powder by spray drying three Pseudomonas phages PEV2 (podovirus), PEV1 and PEV20 (both myovirus) with lactose (80 wt%) and leucine (20 wt%) as excipients. Our results showed that the phages remained viable in the spray dried powder, with little to mild titer reduction (ranging from 0.11 to 1.3 logs) against each of their specific bacterial strains. The powder contained spherical particles with a small volume median diameter of 1.9 µm (span 1.5), a moisture content of 3.5 ± 0.2 wt%., and was largely amorphous with some crystalline peaks, which were assigned to the excipient leucine, as shown in the X-ray diffraction pattern. When the powder was dispersed using the low- and high-resistance Osmohalers, the fine particle fraction (FPF, wt. % of particles < 5 µm in the aerosols relative to the loaded dose) values were 45.37 ± 0.27% and 62.69 ± 2.1% at the flow rate of 100 and 60 L/min, respectively. In conclusion, the PEV phage cocktail powder produced was stable, inhalable and efficacious in vitro against various MDR P. aeruginosa strains that cause pulmonary infections. This formulation will broaden the bactericidal spectrum and reduce the emergence of resistance in bacteria compared with single-phage formulations reported previously.

Indexed as

BacteriophagesRespiratory Tract InfectionsAdministration, InhalationAerosolsDry Powder InhalersHumansParticle SizePowdersPseudomonas aeruginosaAerosolsPowdersInhalation aerosolInhalation drug deliveryLung infectionPhage combinationPhage therapyPowder aerosolPulmonary infections

Identifiers

PMID33486032
PMCPMC7904610

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.