Real-time PCR for Differentiating Actinobacillus actinomycetemcomitans Genotypes
Author Information
Author(s): Orrù Germano, Marini Mario Francesco, Ciusa Maria Laura, Isola Daniela, Cotti Marina, Baldoni Marco, Piras Vincenzo, Pisano Elisabetta, Montaldo Caterina
Primary Institution: Università degli Studi di Cagliari
Hypothesis
Can real-time PCR effectively differentiate and quantify the 652 and JP2 genotypes of Actinobacillus actinomycetemcomitans in dental plaque and saliva?
Conclusion
The study found that a low number of Sardinian patients were positive for Aa infections, with the JP2 strain being the most prevalent among positive cases.
Supporting Evidence
- The real-time PCR method showed good sensitivity and a high linear dynamic range of quantization.
- Only 10 out of 81 patients were found positive for Aa infections.
- 60% of the positive specimens were identified as the highly leukotoxic JP2 strain.
Takeaway
The researchers used a special test to quickly find and count two types of bacteria that can cause gum disease in people's mouths.
Methodology
Real-time PCR was performed on subgingival plaque and saliva samples collected from 81 subjects to differentiate and quantify Aa genotypes.
Limitations
The study had a small sample size and was limited to a specific geographic area (Sardinia).
Participant Demographics
Participants included 81 Italian subjects with a mean age of 43.9, with various forms of periodontal disease.
Digital Object Identifier (DOI)
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