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Direct detection of microorganisms in sonicated orthopedic devices after in vitro biofilm production and different processing conditions
- Source :
- European Journal of Orthopaedic Surgery & Traumatology. 31:1113-1120
- Publication Year :
- 2021
- Publisher :
- Springer Science and Business Media LLC, 2021.
-
Abstract
- The gold standard for microbial detection in prosthetic joint infections is the multiple culture of the peri-prosthetic tissue. The fluid cultures after sonication can improve the recovery of the microorganisms. The aim of this study was to evaluate the sonication technique with a plastic bag and the effect of refrigeration on microorganism detection with conventional culturing, MALDI-TOF MS and qPCR assay on an orthopedic screw model. We produced biofilms of Staphylococcus aureus, Pseudomonas aeruginosa, and Candida albicans on orthopedic screws, which were stored under different conditions and temperatures before sonication. After sonication, the mass spectrometry by MALDI-TOF, qPCR and culture protocols was performed using the sonicated fluid, for detecting the microorganisms involved in the biofilm. The bacterial bioburden decreased by approximately one log after the refrigeration period, in the screws containing P. aeruginosa and S. aureus biofilms. All the microorganisms involved in the screw biofilms were detected with MALDI-TOF and qPCR. Significant reductions in CFU counts occurred only in groups stored in the plastic bag, indicating that changes in temperature and humidity may favor cell death. However, this variation is not important for this model as it did not affect the detection owing to the high counts obtained. Microbial identification by MALDI-TOF in sonicated fluid is feasible. With qPCR, there were no differences between the detection in the screws processed immediately or after refrigeration. It is necessary to consider whether or not the refrigeration period would affect microbial recovery in an explanted prosthesis.
- Subjects :
- 0301 basic medicine
Staphylococcus aureus
Prosthesis-Related Infections
Sonication
Microorganism
030106 microbiology
medicine.disease_cause
Bioburden
03 medical and health sciences
0302 clinical medicine
medicine
Humans
Orthopedics and Sports Medicine
030212 general & internal medicine
Food science
Candida albicans
Arthritis, Infectious
biology
Pseudomonas aeruginosa
business.industry
Biofilm
biology.organism_classification
In vitro
Biofilms
Surgery
business
Subjects
Details
- ISSN :
- 14321068 and 16338065
- Volume :
- 31
- Database :
- OpenAIRE
- Journal :
- European Journal of Orthopaedic Surgery & Traumatology
- Accession number :
- edsair.doi.dedup.....04566e47a899bbe3aab9d80c359e810c