The role of interleukin-6 in pathogenesis of chronic periapical lesions

Abstract

Introduction Cytokine network plays an important role in pathogenesis of chronic periapical lesions. The aim of this study was to determine the concentration of interleukin-6 (IL-6) in tissue homogenates of human periapical lesions and correlate its levels with symptomatology and size of the lesions. Materials and Methods 93 samples of chronic periapical lesions were obtained after extraction of teeth. Samples were divided according to the clinical presentation as symptomatic and asymptomatic, and according to the size as large and small. The concentration of IL-6 was analyzed using ELISA. Results Statistically significant difference in IL-6 concentration was observed in symptomatic lesions compared to asymptomatic (p lt 0.001). Analysis showed statistically higher concentration in large symptomatic lesions compared to large asymptomatic lesions (p lt 0.001), and in small symptomatic lesions compared to small asymptomatic (p lt 0.05). Higher production of IL-6 was observed in large lesions compared to small but this difference was not statistically significant. Conclusion Higher concentration of IL-6 in lesions with expressed clinical symptoms as well as in large lesions indicates that IL-6 is an important factor responsible for the progression of lesions and bone resorption.

Uvod Mreža citokina igra značajnu ulogu u patogenezi hroničnih periapeksnih lezija. Cilj studije je bio da se odredi koncentracija IL-6 u tkivnim homogenatima hroničnih periapeksnih lezija i da se proveri korelacija sa simptomatologijom i veličinom lezija. Materijal i metode Ispitana su 93 uzorka hroničnih periapeksnih lezija dobijenih nakon ekstrakcije zuba. Uzorci lezija su podeljeni prema simptomatologiji pacijenata na simptomatske i asimptomatske, a prema veličini na velike i male. Koncentracija IL-6 je ispitivana pomoću ELISA testa, a dobijene vrednosti su analizirane u odnosu na grupe. Rezultati Statistički značajna razlika u koncentraciji IL-6 je uočena u grupi simptomatskih lezija u poređenju sa asimptomatskim (p lt 0,001). Analiza je pokazala i statistički značajno veću koncentraciju u velikim simptomatskim lezijama u odnosu na velike asimptomatske (p lt 0,001) i u malim simptomatskim lezijama u odnosu na male asimptomatske (p lt 0,05). Zapažena je i povećana produkciju IL-6 u velikim lezijama u odnosu na male, međutim, razlika nije bila statistički značajna. Zaključak Veća koncentracija IL-6 u lezijama sa izraženim kliničkim simptomima kao i velikim lezijama ukazuje na njegovu važnu ulogu u progresiji periapeksnih lezija i koštane resorpcije. .