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Tasca Ribeiro VS, Tuon FF, Kraft L, Suss PH, Wollmann LC, Roderjan JG, Brito DA, Alexandrino F, Malgarin JS, Morello LG, da Costa FDA, Pillonetto M. Conventional culture method and qPCR using 16S rDNA for tissue bank: a comparison using a model of cardiac tissue contamination. J Med Microbiol 2018; 67:1571-1575. [PMID: 30207519 DOI: 10.1099/jmm.0.000837] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Real-time polymerase chain reaction (qPCR) using 16S rDNA is an alternative to conventional culture-based tests. The aim of this study was to compare the conventional culture method with qPCR using 16S rDNA in a model of cardiac tissue contamination. Samples of cardiac tissue for artificial contamination with Escherichia coli and control samples were submitted for DNA extraction, which was conducted by selective and alkaline lysis and purification steps. A standard curve for 16S rDNA was constructed to determine the efficiency and analytical sensitivity of the assay in concentrations from 106 to 102 c.f.u. ml-1 using TaqMan Master Mix. 16S rDNA was detected in all contaminated samples; however, it was not detected in the the final washing step solution of the sample with a bioburden of 102 c.f.u. ml-1. Using qPCR is a potential alternative to conventional culture for microbiological safety testing of allograft tissues for biobanking, reducing the time and labour input required.
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Affiliation(s)
- Victoria Stadler Tasca Ribeiro
- 1Human Tissue Bank, Pontifícia Universidade Católica do Paraná, Rua Imaculada Conceição, 1155, Curitiba, Paraná, Brazil
| | - Felipe Francisco Tuon
- 2Department of Medicine, School of Medicine, Pontifícia Universidade Católica do Paraná, Curitiba, Paraná, Brazil.,1Human Tissue Bank, Pontifícia Universidade Católica do Paraná, Rua Imaculada Conceição, 1155, Curitiba, Paraná, Brazil
| | - Letícia Kraft
- 1Human Tissue Bank, Pontifícia Universidade Católica do Paraná, Rua Imaculada Conceição, 1155, Curitiba, Paraná, Brazil
| | - Paula Hansen Suss
- 1Human Tissue Bank, Pontifícia Universidade Católica do Paraná, Rua Imaculada Conceição, 1155, Curitiba, Paraná, Brazil
| | - Luciana Cristina Wollmann
- 1Human Tissue Bank, Pontifícia Universidade Católica do Paraná, Rua Imaculada Conceição, 1155, Curitiba, Paraná, Brazil
| | - João Gabriel Roderjan
- 1Human Tissue Bank, Pontifícia Universidade Católica do Paraná, Rua Imaculada Conceição, 1155, Curitiba, Paraná, Brazil
| | - Diego Armando Brito
- 3Central Laboratory of Paraná State, Rua Sebastiana Santana Fraga, 1001, Curitiba, Paraná, Brazil
| | - Fabiana Alexandrino
- 4Molecular Biology Institute of Paraná, Rua Prof. Algacyr Munhoz Mader, 3775, Curitiba, Paraná, Brazil
| | - Juliane Soldi Malgarin
- 4Molecular Biology Institute of Paraná, Rua Prof. Algacyr Munhoz Mader, 3775, Curitiba, Paraná, Brazil
| | - Luis Gustavo Morello
- 4Molecular Biology Institute of Paraná, Rua Prof. Algacyr Munhoz Mader, 3775, Curitiba, Paraná, Brazil.,5Carlos Chagas Institute, Rua Prof. Algacyr Munhoz Mader, 3775, Curitiba, Paraná, Brazil
| | - Francisco Diniz Affonso da Costa
- 1Human Tissue Bank, Pontifícia Universidade Católica do Paraná, Rua Imaculada Conceição, 1155, Curitiba, Paraná, Brazil.,2Department of Medicine, School of Medicine, Pontifícia Universidade Católica do Paraná, Curitiba, Paraná, Brazil
| | - Marcelo Pillonetto
- 2Department of Medicine, School of Medicine, Pontifícia Universidade Católica do Paraná, Curitiba, Paraná, Brazil.,3Central Laboratory of Paraná State, Rua Sebastiana Santana Fraga, 1001, Curitiba, Paraná, Brazil
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