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The occurrence of molds in patients with chronic sinusitis
Abstract:
Chronic rhinosinusitis (CRS) is a common inflammatory condition of nasal and paranasal sinus mucosa. Although pathogenic bacteria were postulated as main etiological factor responsible for most cases of CRS, the involvement of molds was recently proved in some cases. The aim of the study was to conduct mycological analysis of material obtained from patients operated on due to chronic sinusitis. The study included 107 patients, 45 women and 62 men. During the surgery, a fragment of mucosa from the region of the ethmoid bulla was obtained as microbiological characteristics of this material closely resemble those of sinus mucosa. In addition, maxillary sinus lavage was obtained. The control group comprised patients without chronic sinusitis. The dithiothreitol solution method was used for the lavage examination. The tissue material (mucosal fragment from the region of the ethmoid bulla) was incubated in 2% liquid Sabouraud medium for 24 h. The material was inoculated onto culture media. The presence of molds was detected in 67% of examined samples. Overall, 41 species belonging to 12 genera were isolated. The most frequently detected genera included Penicillium spp. (46%) and Aspergillus spp. (16%). In addition, Cladosporium spp. (11%), Fusarium spp. (7%), Acremonium spp. (4%), Eurotium spp. (4%), Alternaria spp. (2%), Chaetomium spp. (1%), Geotrichum spp. (1%), Verticillium spp. (1%), Rhizopus spp. (1%), and some unidentified colonies (5%) were isolated. Penicillium crustosum, Penicillium citrinum, Aspergillus niger, Cladosporium cladosporioides, and Fusarium verticillioides were the most prevalent species.
Insights
Molds, particularly Penicillium and Aspergillus species, were found in 67% of chronic rhinosinusitis (CRS) patients, suggesting a significant role for fungal infections in this inflammatory condition.
Area of Science:
- Mycology
- Otolaryngology
- Infectious Diseases
Background:
- Chronic rhinosinusitis (CRS) is a prevalent inflammatory condition affecting nasal and sinus mucosa.
- While bacteria are often considered the primary cause of CRS, recent evidence points to the involvement of molds.
Purpose of the Study:
- To investigate the prevalence and types of mold infections in patients undergoing surgery for chronic sinusitis.
- To perform a mycological analysis of sinus tissue and lavage samples from CRS patients.
Main Methods:
- Mycological analysis of mucosal tissue from the ethmoid bulla and maxillary sinus lavage was performed on 107 CRS patients.
- Tissue samples were incubated in Sabouraud medium, and lavage samples were examined using the dithiothreitol solution method.
- A control group of patients without chronic sinusitis was included for comparison.
Main Results:
- Molds were detected in 67% of the examined CRS samples.
- A total of 41 mold species from 12 genera were identified.
- Penicillium spp. (46%) and Aspergillus spp. (16%) were the most frequently isolated genera, with specific species like Penicillium crustosum and Aspergillus niger being prevalent.
Conclusions:
- Fungal presence, particularly Penicillium and Aspergillus, is common in chronic rhinosinusitis.
- These findings highlight the potential etiological role of molds in CRS, warranting further investigation into antifungal treatments.
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