Synovial Fluid Mediated Aggregation of Clinical Strains of Four Enterobacterial Species
| Autor: | Amelia Staats, Devendra H. Dusane, Jaime Esteban, Paul Stoodley, Alicia Macías-Valcayo, Tripti Thapa Gupta, John-Jairo Aguilera-Correa, Jack Brooks |
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| Rok vydání: | 2020 |
| Předmět: |
Multidrug tolerance
medicine.disease_cause Article Microbiology 03 medical and health sciences 0302 clinical medicine Enterobacteriaceae Synovial Fluid medicine Animals Synovial fluid 030212 general & internal medicine Proteus mirabilis Escherichia coli biology Strain (chemistry) biology.organism_classification medicine.disease Anti-Bacterial Agents Klebsiella pneumoniae Biofilms Cattle Septic arthritis Klebsiella pneumonia Enterobacter cloacae |
| Zdroj: | Advances in Experimental Medicine and Biology ISBN: 9783030712013 Adv Exp Med Biol |
| DOI: | 10.1007/5584_2020_573 |
| Popis: | Septic arthritis and prosthetic joint infection (PJI) are conditions commonly associated with Gram-positive cocci, however, a drastic increase in cases derived from enterobacterial species has recently been observed. Recently it has been reported by multiple groups that staphylococci rapidly form free-floating aggregates in the presence of synovial fluid. These aggregates are comparatively more resistant to antimicrobial challenge than their planktonic counterparts, and thus may play a role in the pathogenesis of joint infection. While staphylococcal aggregates have been the primary focus of interest in the field, it is unclear just how widespread synovial fluid mediated aggregation (SFMA) is in Gram negative enterobacteria (GNE). Through this work we have evaluated SFMA in clinical GNE isolated from PJIs. Two PJI clinical strains each of Enterobacter cloacae, Escherichia coli, Klebsiella pneumonia and Proteus mirabilis strains representing a range of antibiotic susceptibilities were exposed to 10% bovine synovial fluid supernatant (BSF) using a relatively simple, quick semi-quantitative method using an imaging plate reader. BSF stimulated aggregation within 0.5 hr both strains of E. cloacae and P. mirabilis and one strain of E.coli. In one strain of P. mirabilis and E.coli, the size of the aggregates significantly increased from 0.5 to 2 hr exposure. In contrast, neither K. pneumoniae strain aggregated in BSF. These preliminary findings show that aggregation can occur quickly in GNE, but the extent appears strain and species specific. Further work is required to assess the impact of SFMA on antibiotic tolerance, host innate immunity and the establishment of biofilms. |
| Databáze: | OpenAIRE |
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