The clinical significance of IL-6s and IL-27s in Bronchoalveolar lavage fluids from children with mycoplasma pneumoniae pneumonia
Abstract Backgrounds: IL-6 is associated with the severity of mycoplasma pneumoniae pneumonia (MPP). But the relationship between IL-27 and MPP was unknown. Methods: 98 patients with MPP < 14 years old were enrolled in this study and divided into groups by severity (mild cases and severe cases), infection types (MP single infection group and MP mixed infection group) and DNA loads (low MP DNA loads group and high MP DNA loads group), respectively. 15 children with foreign bodies in bronchus were also enrolled as control. IL-6s and IL-27s in bronchoalveolar lavage fluids (BALFs) from these children were measured by ELISA. Results: There were significant differences in IL-6s of BALFs from patients between mild cases and severe cases, MP single infection group and MP mixed infection group, and low MP DNA loads group and high MP DNA loads group, respectively (P﹤0.05). Compared with IL-6s of BALFs from control, IL-6 in BALFs from the 6 patient groups were significantly higher (P﹤0.05). IL-27s in BALFs from MP mixed infection group were significantly lower than those from MP single infection group and control (P﹤0.05) respectively. Conclusion: IL-6 was firmly associated with MPP and had potential application in clinical practice while IL-27 was not related to MP infection.