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Microcalorimetry: A Novel Application to Measure In Vitro Phage Susceptibility of Staphylococcus aureus in Human Serum
Infections involving antibiotic resistant Staphylococcus aureus (S. aureus) represent a major challenge to successful treatment. Further, although bacteriophages (phages) could be an alternative to antibiotics, there exists a lack of correlation in phage susceptibility results between conventional i...
Autores principales: | , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9865112/ https://www.ncbi.nlm.nih.gov/pubmed/36680055 http://dx.doi.org/10.3390/v15010014 |
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author | Molendijk, Michèle M. Phan, My V. T. Bode, Lonneke G. M. Strepis, Nikolas Prasad, Divyae K. Worp, Nathalie Nieuwenhuijse, David F. Schapendonk, Claudia M. E. Boekema, Bouke K. H. L. Verbon, Annelies Koopmans, Marion P. G. de Graaf, Miranda van Wamel, Willem J. B. |
author_facet | Molendijk, Michèle M. Phan, My V. T. Bode, Lonneke G. M. Strepis, Nikolas Prasad, Divyae K. Worp, Nathalie Nieuwenhuijse, David F. Schapendonk, Claudia M. E. Boekema, Bouke K. H. L. Verbon, Annelies Koopmans, Marion P. G. de Graaf, Miranda van Wamel, Willem J. B. |
author_sort | Molendijk, Michèle M. |
collection | PubMed |
description | Infections involving antibiotic resistant Staphylococcus aureus (S. aureus) represent a major challenge to successful treatment. Further, although bacteriophages (phages) could be an alternative to antibiotics, there exists a lack of correlation in phage susceptibility results between conventional in vitro and in vivo assays. This discrepancy may hinder the potential implementation of bacteriophage therapy. In this study, the susceptibility of twelve S. aureus strains to three commercial phage cocktails and two single phages was assessed. These S. aureus strains (including ten clinical isolates, five of which were methicillin-resistant) were compared using four assays: the spot test, efficiency of plating (EOP), the optical density assay (all in culture media) and microcalorimetry in human serum. In the spot test, EOP and optical density assay, all cocktails and single phages lysed both methicillin susceptible and methicillin resistant S. aureus strains. However, there was an absence of phage-mediated lysis in high concentrations of human serum as measured using microcalorimetry. As this microcalorimetry-based assay more closely resembles in vivo conditions, we propose that microcalorimetry could be included as a useful addition to conventional assays, thereby facilitating more accurate predictions of the in vivo susceptibility of S. aureus to phages during phage selection for therapeutic purposes. |
format | Online Article Text |
id | pubmed-9865112 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-98651122023-01-22 Microcalorimetry: A Novel Application to Measure In Vitro Phage Susceptibility of Staphylococcus aureus in Human Serum Molendijk, Michèle M. Phan, My V. T. Bode, Lonneke G. M. Strepis, Nikolas Prasad, Divyae K. Worp, Nathalie Nieuwenhuijse, David F. Schapendonk, Claudia M. E. Boekema, Bouke K. H. L. Verbon, Annelies Koopmans, Marion P. G. de Graaf, Miranda van Wamel, Willem J. B. Viruses Article Infections involving antibiotic resistant Staphylococcus aureus (S. aureus) represent a major challenge to successful treatment. Further, although bacteriophages (phages) could be an alternative to antibiotics, there exists a lack of correlation in phage susceptibility results between conventional in vitro and in vivo assays. This discrepancy may hinder the potential implementation of bacteriophage therapy. In this study, the susceptibility of twelve S. aureus strains to three commercial phage cocktails and two single phages was assessed. These S. aureus strains (including ten clinical isolates, five of which were methicillin-resistant) were compared using four assays: the spot test, efficiency of plating (EOP), the optical density assay (all in culture media) and microcalorimetry in human serum. In the spot test, EOP and optical density assay, all cocktails and single phages lysed both methicillin susceptible and methicillin resistant S. aureus strains. However, there was an absence of phage-mediated lysis in high concentrations of human serum as measured using microcalorimetry. As this microcalorimetry-based assay more closely resembles in vivo conditions, we propose that microcalorimetry could be included as a useful addition to conventional assays, thereby facilitating more accurate predictions of the in vivo susceptibility of S. aureus to phages during phage selection for therapeutic purposes. MDPI 2022-12-20 /pmc/articles/PMC9865112/ /pubmed/36680055 http://dx.doi.org/10.3390/v15010014 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Molendijk, Michèle M. Phan, My V. T. Bode, Lonneke G. M. Strepis, Nikolas Prasad, Divyae K. Worp, Nathalie Nieuwenhuijse, David F. Schapendonk, Claudia M. E. Boekema, Bouke K. H. L. Verbon, Annelies Koopmans, Marion P. G. de Graaf, Miranda van Wamel, Willem J. B. Microcalorimetry: A Novel Application to Measure In Vitro Phage Susceptibility of Staphylococcus aureus in Human Serum |
title | Microcalorimetry: A Novel Application to Measure In Vitro Phage Susceptibility of Staphylococcus aureus in Human Serum |
title_full | Microcalorimetry: A Novel Application to Measure In Vitro Phage Susceptibility of Staphylococcus aureus in Human Serum |
title_fullStr | Microcalorimetry: A Novel Application to Measure In Vitro Phage Susceptibility of Staphylococcus aureus in Human Serum |
title_full_unstemmed | Microcalorimetry: A Novel Application to Measure In Vitro Phage Susceptibility of Staphylococcus aureus in Human Serum |
title_short | Microcalorimetry: A Novel Application to Measure In Vitro Phage Susceptibility of Staphylococcus aureus in Human Serum |
title_sort | microcalorimetry: a novel application to measure in vitro phage susceptibility of staphylococcus aureus in human serum |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9865112/ https://www.ncbi.nlm.nih.gov/pubmed/36680055 http://dx.doi.org/10.3390/v15010014 |
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