Loop-mediated isothermal amplification method for the rapid detection of Enterococcus faecalis in infected root...

Area of Science:

• Microbiology
• Molecular Biology
• Dental Research

Background:

• Enterococcus faecalis is a primary cause of apical periodontitis following root canal treatment.
• Rapid and accurate detection of E. faecalis is crucial for effective endodontic infection management.

Purpose of the Study:

• To develop and evaluate a loop-mediated isothermal amplification (LIA) assay for the rapid and specific detection of Enterococcus faecalis.
• To assess the sensitivity and specificity of the LIA assay in clinical endodontic samples.

Main Methods:

• Design of specific primers targeting the azoA gene of E. faecalis.
• Evaluation of assay specificity using various oral bacteria and sensitivity with serial dilutions of E. faecalis DNA.
• Application of the LIA assay for detecting E. faecalis in clinical root canal specimens.

Main Results:

• The LIA assay demonstrated high specificity for E. faecalis, confirmed by restriction enzyme digestion.
• Inclusion of loop primers significantly enhanced detection sensitivity by several orders of magnitude.
• E. faecalis was detected in 4 out of 18 root canal samples, with results consistent with conventional PCR.

Conclusions:

• The loop-mediated isothermal amplification assay is a highly effective tool for the rapid detection of Enterococcus faecalis.
• This assay facilitates prompt diagnosis of endodontic infections, improving clinical outcomes.