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Updated: Apr 19, 2026
06:27
Identification of Mycobacterium Species by DNA Microarray Chip Method
Published on: June 24, 2025
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Microarray identification of bacterial species in peritonsillar abscesses
J E Wikstén1, S Laakso, M Mäki
1Department of Otorhinolaryngology-Head and Neck Surgery, Helsinki University Central Hospital, Helsinki, Finland, johanna.wiksten@hus.fi.
Summary
Peritonsillar abscess (PTA) bacterial identification was advanced using a novel PCR and microarray assay. This method identified diverse pathogens, noting Fusobacterium necrophorum in younger, sicker patients, aiding future targeted antibiotic treatments.
Area of Science:
- Otorhinolaryngology
- Infectious Diseases
- Microbiology
Background:
- Peritonsillar abscess (PTA) is a common head and neck infection.
- Microbial etiology of PTA varies geographically and methodologically.
- Accurate pathogen identification is crucial for effective treatment.
Purpose of the Study:
- To identify bacterial species in PTA using a novel PCR and microarray assay.
- To correlate specific pathogens with patient demographics and symptoms.
- To evaluate the feasibility of the assay for clinical diagnostics.
Main Methods:
- Prospective collection of 180 PTA pus aspirates.
- Analysis using a novel PCR and microarray assay targeting gyrB/parE genes.
- Comparison with DNA sequencing for bacterial identification.
Main Results:
- 160 (89%) samples tested positive for bacteria; 149 (83%) had identified species.
- Polybacterial infections occurred in 13%, and anaerobes in 52%.
- Fusobacterium necrophorum was associated with younger patients and more severe symptoms.
Conclusions:
- The PCR and microarray assay is a feasible and rapid tool for PTA pathogen identification.
- Bacterial diversity in PTA highlights challenges in species-specific antibiotic therapy.
- Early identification of pathogens like F. necrophorum can guide treatment for severe cases.
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