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Updated: Apr 6, 2026

Characterization of Inflammatory Responses During Intranasal Colonization with Streptococcus pneumoniae
Published on: January 17, 2014
Mycoplasma pneumoniae and Chlamydophila pneumoniae: a comparative study in patients with nasal polyposis and healthy
D G Ioannidis1, V A Lachanas2, Z Florou1
1Department of Microbiology,University of Thessaly,Larissa,Greece.
Introduction:
The role played by Mycoplasma pneumoniae and Chlamydophila pneumoniae in the pathogenesis of chronic rhinosinusitis with nasal polyps has been the object of ongoing debate. We used real-time polymerase chain reaction to investigate the prevalence of both microorganisms in the nasal tissue samples of patients and controls.
Methods:
We extracted DNA from nasal polyp samples obtained during functional endoscopic sinus surgery and the inferior turbinate samples of controls undergoing septoplasty. We used the highly sensitive real-time polymerase chain reaction to detect the presence of M pneumoniae and C pneumoniae DNA.
Results:
Patients with chronic rhinosinusitis with nasal polyps consisted of 62 individuals (39 men; mean age 51 years); the control group consisted of 24 individuals (13 men; mean age 45 years). All samples from both groups were negative for M pneumoniae and C pneumoniae DNA.
Conclusion:
We have demonstrated that the likelihood of M pneumoniae and C pneumoniae acting as an ongoing inflammatory stimulus in chronic rhinosinusitis with nasal polyps is slim.
Insights
This study found no evidence of Mycoplasma pneumoniae or Chlamydophila pneumoniae in nasal polyp tissues. These common respiratory pathogens are unlikely to be a cause of chronic rhinosinusitis with nasal polyps.
Area of Science:
- Otolaryngology
- Microbiology
- Immunology
Background:
- The involvement of Mycoplasma pneumoniae and Chlamydophila pneumoniae in chronic rhinosinusitis with nasal polyps (CRSwNP) remains debated.
- Investigating the prevalence of these specific bacteria is crucial for understanding CRSwNP pathogenesis.
Purpose of the Study:
- To determine the presence of Mycoplasma pneumoniae and Chlamydophila pneumoniae in nasal tissues of patients with CRSwNP.
- To compare the prevalence of these microorganisms in CRSwNP patients versus a control group.
Main Methods:
- DNA was extracted from nasal polyp samples of CRSwNP patients and inferior turbinate samples from controls.
- Real-time polymerase chain reaction (PCR) was employed for sensitive detection of M. pneumoniae and C. pneumoniae DNA.
Main Results:
- The study included 62 CRSwNP patients and 24 controls.
- No M. pneumoniae or C. pneumoniae DNA was detected in any of the nasal tissue samples from either group.
Conclusions:
- The findings suggest that M. pneumoniae and C. pneumoniae are unlikely to be significant contributors to the inflammation in CRSwNP.
- This research helps to narrow down potential etiological factors in chronic rhinosinusitis with nasal polyps.
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