1. Comparison of homogenization with the GentleMacs Dissociator vs conventional methods for routine tissue processing
- Author
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M. Pradal, P. Saint-sardos, T. Faïs, R. Bonnet, J. Delmas, Service de Bactériologie [CHU Clermont-Ferrand], CHU Gabriel Montpied [Clermont-Ferrand], CHU Clermont-Ferrand-CHU Clermont-Ferrand, Microbes, Intestin, Inflammation et Susceptibilité de l'Hôte (M2iSH), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre de Recherche en Nutrition Humaine d'Auvergne (CRNH d'Auvergne)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Clermont Auvergne (UCA), and ROSSI, Sabine
- Subjects
pus ,Staphylococcus aureus ,[SDV.BIO]Life Sciences [q-bio]/Biotechnology ,tissue processing ,Bacteria ,GentleMacs ,homogenization ,standardisation ,Staphylococcal Infections ,Applied Microbiology and Biotechnology ,[SDV.BIO] Life Sciences [q-bio]/Biotechnology ,[SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology ,pre-traitment standardization ,Humans ,[SDV.MP] Life Sciences [q-bio]/Microbiology and Parasitology - Abstract
Tissue specimens are valuable materials for microbiological diagnosis. The method of tissue processing can have a significant effect on sensitivity. This study aimed to compare different biopsy processing methods in terms of efficacy and standardization. Pork tissue artificially inoculated with Staphylococcus aureus and Escherichia coli, and samples of infected human tissue were processed by different methods before culture, and the results compared. Bacterial recovery from artificially inoculated pork tissue was significantly higher by homogenization with GentleMacs Dissociator than with sonication. No significant difference was observed between the GentleMacs Dissociator and manual treatment with a scalpel and vortexing. The microbial yield from homogenized human tissues was significantly higher after homogenization with GentleMacs Dissociator than with the conventional method. Homogenization with the GentleMacs Dissociator retrieves bacteria from tissue effectively. Tissue homogenization with the Dissociator is easy and fast to perform and allows for a high degree of standardization.
- Published
- 2022
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