Comparison of treatment efficacy of omega-3 fish oil and montelukast in ovalbumin-protease-induced allergic rhinitis model in rats.

OBJECTIVES: Montelukast is a well-known leukotriene receptor antagonist commonly used in treating allergic rhinitis and asthma. Omega-3 fatty acid is also known as an antiallergic and immunomodulator molecule. This study aimed to elucidate the efficacy of systemic montelukast and omega-3 fatty acid treatment in allergic rhinitis models in Wistar Hannover rats. METHODS: This research was conducted on 28 healthy Wistar Hannover rats weighing 250-350 g. After establishing the allergic rhinitis model, nasal symptoms were observed and scored, and the nasal mucosa of all rats was investigated histologically. Light microscopy was utilized to evaluate the degree of ciliary loss, goblet cell hyperplasia, vascular congestion, vascular proliferation, inflammatory cell infiltration, eosinophil infiltration, and hypertrophy in chondrocytes. RESULTS: As a result of the analysis of the data obtained from the study, it was determined that typical allergic rhinitis symptoms such as nasal scratching and sneezing were significantly reduced in the rats in the montelukast and omega-3 treated group, and these symptoms did not increase after repeated intranasal OVA-protease applications. Histological examinations after fish oil treatment did not reveal typical inflammatory changes in allergic rhinitis. None of the rats in the montelukast and omega-3 groups had any increase in goblet cells, whereas 14.3% of the rats in the control group and 28.6% of the rats in the allergic rhinitis group had mild increase. Last but not least, 71.4% of rats in the allergic rhinitis group had a moderate increase. The difference between the groups was statistically significant (p < 0.001). CONCLUSION: Regarding the outcomes of this research, it was observed that w-3 fatty acids had antiallergic effects, both histopathological and clinical, in the allergic rhinitis model. We believe that further randomized controlled trials incorporating larger cohorts are warranted to verify the use of omega-3 fatty acids in treating allergic rhinitis. The level of evidence of this article is Level 2.

Single-sided sinonasal mass: A retrospective study.

OBJECTIVE: A unilateral sinonasal mass is a common pathology in ear, nose, and throat clinical practice. However, it may be confused with early stage inflammatory pathologies. The aim of this study was to examine the diagnostic histopathological, clinical, and radiological criteria for a unilateral nasal mass. METHODS: The present study examined the clinical and pathological profiles of unilateral sinonasal masses observed in patients at an ear, nose, and throat clinic in Istanbul between January 2008 and January 2016. During the period of this retrospective study, 195 patients presented with a single-sided sinonasal mass (males: 130, females: 65; age range: 9-93 years). The data analyzed were obtained from patient records. RESULTS: The single-sided sinonasal mass was benign in 187 (95.9%) cases and malignant in 8 (4.1%) cases. Inflammatory polyps (81.03%) were the most frequent benign finding. Squamous cell carcinoma (1.54%) was the most commonly diagnosed malignant lesion. CONCLUSION: A single-sided sinonasal mass is commonly detected by otorhinolaryngologists. Although most often the diagnosis is inflammatory nasal polyposis, the risk of malignancy should not be overlooked. For this reason, careful endoscopic examination should be performed, all lesions should undergo a pathological examination, and it should be kept in mind that neoplastic disease can occur at any age and may be associated with many symptoms.