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Detection of Prosthetic Joint Infection Based on Magnetically Assisted Surface Enhanced Raman Spectroscopy
Ariana Fargašová1, Anna Balzerová1, Robert Prucek1
1Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacký University Olomouc , Šlechtitelů 27, 783 71 Olomouc, Czech Republic.
Abstract:
Accurate and rapid diagnosis of prosthetic joint infection (PJI) is vital for rational and effective therapeutic management of this condition. Several diagnostic strategies have been developed for discriminating between infected and noninfected cases. However, none of them can reliably diagnose the whole spectrum of clinical presentations of PJI. Here, we report a new method for PJI detection based on magnetically assisted surface enhanced Raman spectroscopy (MA-SERS) using streptavidin-modified magnetic nanoparticles (MNP@Strep) whose surface is functionalized with suitable biotinylated antibodies and then coated with silver nanoparticles by self-assembly. The high efficiency of this approach is demonstrated by the diagnosis of infections caused by two bacterial species commonly associated with PJI, namely, Staphylococcus aureus and Streptococcus pyogenes. The method's performance was verified with model samples of bacterial lysates and with four real-matrix samples of knee joint fluid spiked with live pathogenic bacterial cells. This procedure is operationally simple, versatile, inexpensive, and quick to perform, making it a potentially attractive alternative to established diagnostic techniques based on Koch's culturing or colony counting methods.
Insights
A new magnetically assisted surface enhanced Raman spectroscopy (MA-SERS) method offers rapid prosthetic joint infection (PJI) detection. This technique shows promise for diagnosing PJI caused by common bacteria like Staphylococcus aureus and Streptococcus pyogenes.
Area of Science:
- Biomedical diagnostics
- Nanotechnology applications
- Spectroscopic analysis
Background:
- Prosthetic joint infection (PJI) diagnosis is critical for treatment.
- Current diagnostic methods have limitations in covering all PJI cases.
- Need for rapid, accurate, and versatile diagnostic tools for PJI.
Purpose of the Study:
- To develop and validate a novel method for prosthetic joint infection (PJI) detection.
- To utilize magnetically assisted surface enhanced Raman spectroscopy (MA-SERS) for PJI diagnosis.
- To assess the efficacy of the MA-SERS method against common PJI-causing bacteria.
Main Methods:
- Development of streptavidin-modified magnetic nanoparticles (MNP@Strep).
- Functionalization with biotinylated antibodies and silver nanoparticle coating via self-assembly.
- Application of MA-SERS for detecting Staphylococcus aureus and Streptococcus pyogenes in samples.
Main Results:
- Successful detection of Staphylococcus aureus and Streptococcus pyogenes using the MA-SERS method.
- Validation with bacterial lysates and spiked knee joint fluid samples.
- Demonstrated high efficiency in diagnosing PJI-associated bacterial infections.
Conclusions:
- The MA-SERS method provides a simple, versatile, and cost-effective approach for PJI detection.
- This technique offers a rapid alternative to traditional culture-based diagnostic methods.
- MA-SERS holds potential for improving the clinical management of prosthetic joint infections.
