Related Experiment Video
Updated: Dec 6, 2025

Infection of Primary Nasal Epithelial Cells Grown at an Air-Liquid Interface to Characterize Human Coronavirus-Host Interactions
Published on: September 22, 2023
[Microbiology of chronic rhinosinusitis with different clinical phenotypes]
Xiao Liu1, Hongbing Liu1, Chunhua Li1
1Department of Otolaryngology Head and Neck Surgery,Second Affiliated Hospital of Nanchang University,Nanchang,330006,China.
Abstract:
Objective:To observe the microbiological characteristics and clinical correlation of chronic rhinosinusitis with different clinical phenotypes. Method:One hundred and ninety-six patients with chronic rhinosinusitis(CRS) underwent nasal endoscopic surgery, including 126 patients with Chronic rhinosinusitis with nasal polyps(CRSwNP) and 70 patients with chronic rhinosinusitis without nasal polyps(CRSsNP); 78 patients with nasal septum deviation(control group) were enrolled. The nasal discharge samples were collected before operation, and the bacteria were isolated and identified by the traditional culture method. The bacteria were compared between the two groups by Pearson chi-square test or Fisher exact test, and the bacteria were compared between groups by Kruskal-Wallis rank sum test. Out statistically significant variables(P<0.05). Result:The total bacterial detection rate was 73.0% in the three groups, 76.2% in the CRSwNP group, 68.6% in the CRSsNP group and 71.8% in the control group, respectively(P=0.579). The detection rate of the bacteria was mainly Gram-positive bacteria. The higher detection rate included: Staphylococcus epidermidis, Pseudodiphtheria, Staphylococcus aureus, Haemophilus influenzaemola, Haemella influenzaemola. The detection rate of Haemophilus influenzae in the CRSwNP group and the control group(13.5% vs 2.6%, P=0.009), but there were statistical differences CRSsNP.There was no statistically significant difference in the detection rate of the bacteria(8.6% vs 2.6%, P=0.15) between the CRSsNP group and the control group; The difference of staphylococcus aureus detection rate between NonECRSwNP group and ECRSwNP group was statistically significant (9.6% vs 28.1%,P=0.017).There was no significant difference in staphylococcus aureus detection rate between NonECRSsNP group and ECRSsNP group (9.4% vs 16.7%, P=0.482). Conclusion:Haemophilus influenzae may be a potential cause of CRSwNP; S. aureus may promote the eosinophilic granulocyte inflammatory response to CRSwNP.
Related Concept Videos
Chronic Pharyngitis
Etiology
It often arises from persistent viral or bacterial infections affecting sinuses and tonsils.
Additional contributing factors include inadequate dental hygiene, mouth breathing, recurring tonsillitis, allergic rhinitis, laryngopharyngeal reflux, and exposure to smoke, chemicals, and other environmental pollutants. Allergic reactions to pollen, mold, and pet dander, chronic cough, excessive voice usage,...
Cystic Fibrosis: Pathogenesis
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation,...
Anatomy of Respiratory System I: Upper Respiratory Tract
Nose and nasal cavity
The nose and nasal cavity represent the main external openings of the respiratory tract....
Acute Pharyngitis
Acute pharyngitis is the inflammation of the back of the throat (pharynx), commonly resulting in a sore throat. It is a frequently encountered condition that prompts individuals to seek medical advice.
Classification
Acute pharyngitis can be categorized based on its underlying cause:
COPD: Pathogenesis and Clinical Features
The primary cause for the onset of COPD is cigarette smoking and exposure to air pollution. These hazardous factors initiate a chain reaction within the lungs, resulting in chronic inflammation, damage to the airways, and a...

