Abstract
Vitamin D is thought to play an inflammatory modulatory role in the pathogenesis of chronic rhinosinusitis with nasal polyposis (CRSwNP) & it also affects the severity of inflammation so the study was focused on the evaluation of serum vitamin D & interleukins in CRSwNP. The prospective study was conducted on clinic-radiological confirmed cases. The patients were not operated prior, clubbed under primary nasal polyposis (PNP) group and the patients were operated prior, clubbed under recurrent nasal polyposis (RNP) group. The subjective and objective severity of the disease was assessed by sino-nasal outcome score (SNOT 22) & NCCT PNS & orbit. Serum levels of cytokines (IL4, IL 5, and IL 13) were quantified using the ELISA method using the Human Interleukin antibody coated ELISA kit. Measurement of vitamin D was done by using recombinant ruthenium-labelled VDBP. There was a significant difference in Vitamin D, AEC, IL 4, IL 5, IL 13 levels in the disease groups compared to control group. Low vitamin D, high SNOT & high absolute eosinophil count (AEC) count was noticed in both disease groups. Vitamin D may play a significant role in nasal polyposis formation. For the establishment of interaction, a community based larger study is required as the prevalence of low vitamin D level is high in Indian population.