Related Experiment Video
Updated: Feb 6, 2026

Author Spotlight: Advancing Allergic Rhinitis Research with Multicolor Immunofluorescence
Published on: September 22, 2023
Differential expression of CCL18 in moderate/severe and mild persistent allergic rhinitis and its correlation with
Ashkan Pirayesh1, Samira Ferdosi2, Hedayatollah Shirzad1
1a Cellular and Molecular Research Center, Basic Health Sciences Institute , Shahrekord University of Medical Sciences , Shahrekord , Iran.
Background And Aims:
This study aimed to assess the level of the expression of CCL-18 on nasal inferior turbinate mucosa in patients with mild (M) and moderate-to-severe (M/S) persistent allergic rhinitis (PAR).
Methods:
The participants in this case-controlled study were divided into three groups: patients with M/S PAR, patients with M PAR, and the healthy control group. Biopsies of nasal inferior turbinate mucosa were obtained from the participants. Expression of CCL-18 mRNA was evaluated by real-time PCR. The serum levels of CCL-18 were determined by ELISA. Total serum IgE levels and specific serum IgE levels were measured. The clinical manifestations were assessed using the total nasal syndrome score (TNSS).
Results:
Gene expression and the serum level of CCL-18 in patients with M/S PAR increased significantly compared to the control group and patients with M PAR. The serum level of CCL-18 was found to correlate with TNSS in patients with M/S PAR. There was a statistical correlation between the serum level of CCL-18 and the total serum IgE in the treatment groups.
Conclusion:
The results of the study indicate that there could be a relationship between the expression of CCL-18 in nasal turbinate mucosa and the severity of allergic rhinitis.
Insights
Chemokine ligand 18 (CCL-18) expression in nasal turbinates is elevated in moderate-to-severe persistent allergic rhinitis. Higher CCL-18 levels correlate with symptom severity and IgE in allergic rhinitis patients.
Area of Science:
- Immunology
- Otorhinolaryngology
- Allergy Research
Background:
- Persistent allergic rhinitis (PAR) is a common condition affecting nasal mucosa.
- Understanding the molecular mechanisms underlying PAR severity is crucial for effective treatment.
- Chemokine ligand 18 (CCL-18) is implicated in inflammatory processes.
Purpose of the Study:
- To evaluate CCL-18 expression in nasal inferior turbinate mucosa of patients with mild (M) and moderate-to-severe (M/S) PAR.
- To correlate CCL-18 levels with disease severity and immunological markers.
Main Methods:
- Case-controlled study comparing M/S PAR, M PAR, and healthy controls.
- Nasal inferior turbinate biopsies for CCL-18 mRNA analysis via real-time PCR.
- Serum CCL-18 levels measured by ELISA; total and specific IgE levels assessed.
- Clinical severity assessed using the total nasal syndrome score (TNSS).
Main Results:
- Significantly increased CCL-18 mRNA expression and serum levels in M/S PAR patients compared to controls and M PAR patients.
- CCL-18 serum levels positively correlated with TNSS in M/S PAR patients.
- Statistical correlation observed between serum CCL-18 and total serum IgE levels.
Conclusions:
- CCL-18 expression in nasal turbinate mucosa may be linked to the severity of persistent allergic rhinitis.
- CCL-18 could serve as a potential biomarker for allergic rhinitis severity.
- Further research is warranted to elucidate the role of CCL-18 in PAR pathogenesis.
Related Concept Videos
Allergic Reactions
Correlations
Correlation and Causation
Correlation versus Causation
If the dependent variable increases or decreases when the independent variable increases, there is a positive or negative...
Allergic Drug Reactions
Correlation
Two variables, for example, a and b, are said to be positively correlated if both variables move in the same direction. In other words, a positive correlation exists between two variables, a and b, if:
Wave Parameters

