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Updated: Aug 4, 2026
Antigen-Capture Enzyme-Linked Immunosorbent Assay for Specific Detection of Mycoplasma pneumoniae
Published on: February 24, 2023
Use of a rapid recombinase-aided amplification assay for Mycoplasma pneumoniae detection
Guanhua Xue1, Shaoli Li1, Hanqing Zhao1
1Department of Bacteriology, Capital Institute of Pediatrics, No. 2 Yabao Road, Chaoyang District, Beijing, 100020, China.
Background:
Mycoplasma pneumoniae is one of the most common causative pathogens of community-acquired pneumonia (CAP), accounting for as many as 30-50% of CAP during peak years. An early and rapid diagnostic method is key for guiding clinicians in their choice of antibiotics.
Methods:
The recombinase-aided amplification (RAA) assay is a recently developed, rapid detection method that has been used for the detection of several pathogens. The assays were performed in a one-step single tube reaction at 39° Celsius within 15-30 min. In this study, we established an RAA assay for M. pneumoniae using clinical specimens for validation and commercial real-time PCR as the reference method.
Results:
The analytical sensitivity of the RAA assay was 2.23 copies per reaction, and no cross-reactions with any of the other 15 related respiratory bacterial pathogens were observed. Compared with the commercial real-time PCR assay used when testing 311 respiratory specimens, the RAA assay obtained 100% sensitivity and 100% specificity with a kappa value of 1.
Conclusions:
These results demonstrate that the proposed RAA assay will be of benefit as a faster, sensitive, and specific alternative tool for the detection of M. pneumoniae.
Insights
A new recombinase-aided amplification (RAA) assay offers a rapid, sensitive, and specific method for detecting Mycoplasma pneumoniae, a common cause of community-acquired pneumonia (CAP). This diagnostic tool aids clinicians in timely antibiotic selection.
Area of Science:
- Microbiology
- Molecular Diagnostics
- Infectious Diseases
Background:
- Mycoplasma pneumoniae is a leading cause of community-acquired pneumonia (CAP), particularly during peak seasons.
- Accurate and prompt diagnosis of M. pneumoniae is crucial for effective antibiotic treatment strategies.
Purpose of the Study:
- To develop and validate a rapid Recombinase-Aided Amplification (RAA) assay for the detection of Mycoplasma pneumoniae.
- To evaluate the performance of the RAA assay against a commercial real-time PCR method using clinical respiratory specimens.
Main Methods:
- A one-step, single-tube Recombinase-Aided Amplification (RAA) assay was designed for M. pneumoniae detection.
- Assays were conducted at 39°C, with results available within 15-30 minutes.
- The RAA assay was validated using 311 clinical respiratory specimens, with real-time PCR serving as the reference standard.
Main Results:
- The RAA assay demonstrated high analytical sensitivity (2.23 copies/reaction) and specificity, with no cross-reactivity against 15 other respiratory pathogens.
- In clinical validation, the M. pneumoniae RAA assay achieved 100% sensitivity and 100% specificity compared to real-time PCR (kappa=1).
Conclusions:
- The developed RAA assay is a highly sensitive and specific diagnostic tool for M. pneumoniae detection.
- This RAA assay presents a valuable, rapid alternative for diagnosing M. pneumoniae infections, facilitating quicker clinical decisions.
