Abstract
The transmission of microbial infection through tissue allografts is one of the main risks that must be controlled in tissue banks. Therefore, microbiological monitoring controls and validated protocols for the decontamination of tissues during processing have been implemented. This study is based on the evaluation of data from microbiological cultures of arteries (mainly long peripheral arteries) processed in the tissue bank of Valencia (Spain). Donors’ profile, pre- and post-disinfection tissue samples were assessed. The presence of residual antibiotics in disinfected tissues was determined and the antimicrobial potential of these tissues was tested. Our overall contamination rate was 23.69%, with a disinfection rate (after antibiotic incubation) of 87.5%. Most (76.09%) of the microbial contaminants were identified as Gram positive. Arterial allografts collected from body sites affected by prior organ removal showed higher risk of contamination. Only vancomycin was detected as tissue release. The antimicrobial effect on Candida albicans was lower than that for bacterial species. Risk assessment for microbial contamination suggested the donor’s skin and the environment during tissue collection as the main sources for allograft contamination. Antibiotic-disinfected arterial allografts showed antimicrobial potential.
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The dataset generated during and/or analyzed during the current study is available from the corresponding author on reasonable request.
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Acknowledgements
We want to thank Dr. Andrés Sanz, for his comments on data organization, and Mr. Jack Paton for English language editing.
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VM conception and design, manuscript writing, data analysis and interpretation; MA, JB provision of study material, data collection, data analysis and interpretation, manuscript revision; MPB, MDO, AM, LA, AJG, JP material preparation, data analysis and interpretation, manuscript revision; SM, CEL, data analysis and interpretation, statistics, manuscript revision; LL, data analysis and interpretation, manuscript revision.
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Mirabet, V., Arrébola, M., Briones, J. et al. Microbiological assessment of arterial allografts processed in a tissue bank. Cell Tissue Bank 22, 539–549 (2021). https://doi.org/10.1007/s10561-021-09951-7
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DOI: https://doi.org/10.1007/s10561-021-09951-7