Abstract:Objective To study expression and clinical significance of IL-27 in adults with bronchial asthma ("asthma" for short) during acute attack stage. Methods Ninety-seven cases of adults with asthma were selected from the Third People′s Hospital of Dongguan City in Guangdong Province from January 2016 to January 2017. They were divided into seizure group (54 cases) and remission group (43 cases) according to symptoms and signs, another 40 cases healthy adults were selected as control group at the same time. The serum level of immunoglobulin E (IgE), interferon-γ (IFN-γ), interleukin (IL)-12, IL-27 and transforming growth factor-β (TGF-β) was measured and compared in all the researchers. Canon AS-505 pulmonary function instrument was used to measure the percentage of forced expiratory volume in the first second (FEV1% pred) and the maximum expiratory rate in the first second (FEV1/FVC). The correlation of the above indicators were analyzed. Results IgE and TGF-β in remission group and seizure group were significantly higher than those in control group (all P < 0.05), and seizure group was higher than remission group (all P < 0.05). The levels of IFN-γ, IL-12 and IL-27 in remission group and seizure group were significantly lower than those in control group (all P < 0.05), and IL-12 and IL-27 in seizure group were lower than those in remission group (all P < 0.05). FEV1% pred and FEV1/FVC in seizure group were lower than those in remission group and control group (all P < 0.05), FEV1% pred and FEV1/FVC in remission group were also lower than those in control group (all P < 0.05). IgE and TGF-β were negatively correlated with FEV1% pred and FEV1/FVC (P < 0.05). IFN-γ, IL-12 and IL-27 were positively correlated with FEV1% pred and FEV1/FVC (P < 0.05). Conclusion Serum IL-27 in adults with asthma during acute attack stage is elevated, and it is positively correlated with pulmonary function status. It is important to evaluate the severity of asthma.
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