Journal: Microorganisms
Article Title: Saponin Improves Recovery of Bacteria from Orthopaedic Implants for Enhanced Diagnosis Ex Vivo
doi: 10.3390/microorganisms13040836
Figure Lengend Snippet: Novel 3D PJI Soft Tissue Model. ( A ) CLSM images demonstrating the presence of S. epidermidis biofilm aggregates (turquoise) on the TAV discs, surrounded by human cells and host tissue (red, collagen) and single S. epidermidis colonies (green) within the host tissue matrix colonized by human fibroblasts (red). Scale bars indicate 50 µm. ( B ) Fluorescent images obtained from the tissue model with the Moleculight i: X TM device showing the host tissue (green, collagen) surrounding the 1 cm TAV discs. Red signal indicates S. epidermidis on the implant and in the tissue (arrows). ( C ) S. epidermidis CFU recovery of infected tissue models. The implant disc and tissue were collected and treated separately either with 0.001% ( w / v ) saponin in PBS combined with vortexing or saline sonication, n = 5 replicates. Abbreviations: CFUs, colony-forming units; CLSM, confocal laser scanning microscopy; TAV, titanium alloy Ti-6AI-4V.
Article Snippet: To do so, the human skin fibroblast cell line BJ (ATCC, Manassas, VA, USA) was grown in DMEM/F12 + 5% FCS until confluent and then harvested.
Techniques: Infection, Saline, Sonication, Confocal Laser Scanning Microscopy