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Published on: March 26, 2013
Rapid detection of bacteria in periprosthetic joint infection via microfluidic qPCR chip
Zeyu Feng1, Qingyuan Zheng1, Pengcheng Li2
1Department of Orthopaedics, General Hospital of Chinese People's Liberation Army, Beijing 100853, China; Senior Department of Orthopedics, Fourth Medical Center of People's Liberation Army General Hospital, Beijing 100853, China.
Objective:
To evaluate the microbiological detection efficacy and turnaround time of a microfluidic quantitative real-time PCR (qPCR) platform for periprosthetic infection (PJI) patients.
Design Or Methods:
This study included PJI patients with Staphylococcus aureus or Staphylococcusepidermidis and patients with aseptic failure (AF) from our clinical center. We analyzed the microbiological detection efficacy and turn-around-time of three bacterial detection methods: joint fluid culture, qPCR, and the microfluidic chip.
Results:
A total of 310 patients were included in the study, comprising 106 PJI patients and 204 AF patients. CRP, ESR, synovial white blood cell and synovial PMN percentages in the PJI group were significantly higher than those in the AF group (P < 0.001). Compared to joint fluid culture (7011.3 ± 3013.0 min) and qPCR (131.7 ± 7.9 min), the microfluidic chip showed a significantly shorter turnaround time (59.4 ± 4.2 min, P < 0.001). Additionally, low-load Staphylococcus aureus or Staphylococcus epidermidis which below the positive threshold were detected in some PJI or AF patients.
Conclusion:
The microfluidic chip offers microbiological detection efficacy and time advantages for detecting Staphylococcus aureus and Staphylococcus epidermidis compared to joint fluid culture and traditional qPCR.
Insights
A new microfluidic chip significantly speeds up the detection of Staphylococcus aureus and Staphylococcus epidermidis in periprosthetic joint infection (PJI) patients, offering improved microbiological detection efficacy and faster results compared to traditional methods.
Area of Science:
- Microbiology
- Medical Diagnostics
- Biotechnology
Background:
- Periprosthetic joint infection (PJI) diagnosis relies on accurate and timely microbiological detection.
- Traditional methods like joint fluid culture have limitations in speed and sensitivity.
- Quantitative real-time PCR (qPCR) offers faster results but can be time-consuming.
Purpose of the Study:
- To evaluate the microbiological detection efficacy of a novel microfluidic quantitative real-time PCR (qPCR) platform.
- To assess the turnaround time of the microfluidic platform for periprosthetic infection (PJI) patients.
- To compare the microfluidic chip with joint fluid culture and traditional qPCR for detecting Staphylococcus aureus and Staphylococcus epidermidis.
Main Methods:
- A study involving 310 patients (106 PJI, 204 aseptic failure) was conducted.
- Microbiological detection efficacy and turnaround time were analyzed for joint fluid culture, qPCR, and the microfluidic chip.
- Patients with Staphylococcus aureus or Staphylococcus epidermidis infections were included.
Main Results:
- The microfluidic chip demonstrated a significantly shorter turnaround time (59.4 ± 4.2 min) compared to joint fluid culture (7011.3 ± 3013.0 min) and qPCR (131.7 ± 7.9 min).
- The microfluidic chip effectively detected low bacterial loads of Staphylococcus aureus or Staphylococcus epidermidis.
- Biomarkers like CRP, ESR, and synovial white blood cell counts were significantly higher in PJI patients.
Conclusions:
- The microfluidic chip provides significant time advantages for microbiological detection in PJI patients.
- This platform offers comparable or improved detection efficacy for Staphylococcus aureus and Staphylococcus epidermidis.
- The microfluidic chip represents a promising advancement for rapid PJI diagnosis.
