油酸型急性呼吸窘迫综合征大鼠血清及肺组织IL-4、IL-10、IL-12水平的变化

Changes of IL-4, IL-10, IL-12 levels in rat serum and lung during acute respiratory distress syndrome induced by oleic acid

目的 :观察IL - 4、IL - 10、IL - 12在大鼠油酸型急性呼吸窘迫综合征 (ARDS)不同时间血清及肺组织中的变化规律。方法 :经舌下静脉注射油酸复制大鼠ARDS模型 ,用酶联免疫吸附试验测定不同时间血清及肺组织匀浆上清液中IL - 4、IL - 10和IL - 12水平。结果 :注射油酸 4h、8h、16h组血清及肺组织中IL - 10、IL - 12水平均明显高于对照组 (P <0 0 1或 0 0 5 ) ;但注后 16h组血清和注后 8h组肺组织中IL - 10水平均明显低于 4h组 (P <0 0 5 ) ;血清中IL - 4水平在注射油酸 4h、8h组均明显高于对照组 (P <0 0 1或 0 0 5 ) ;而 16h组则明显低于 4h组 (P<0 0 5 ) ;肺组织中IL - 4水平在 4h、8h、16h组均明显高于对照组 (P <0 0 1) ,而 16h组则明显低于 8h组 (P <0 0 5 )。肺系数和肺组织病理学变化在注射油酸后 4h组改变最明显。结论 :IL - 4、IL - 10和IL - 12在大鼠油酸型ARDS炎症过程中可能起重要作用 ;ARDS时促炎性和抗炎性细胞因子相继产生 。

AIM: To observe the dynamic changes of interleukin-4(IL-4),IL-10,IL-12 in rat serum and lung tissues during acute respiratory distress syndrome (ARDS). METHODS: The ARDS model of rats was induced by intravenous injection of oleic acid. The levels of IL-4 ,IL-10,IL-12 in serum and the supernatant of lung tissues were measured by enzyme linked immunosorbent assay (ELISA). RESULTS: The Levels of serum and lung IL-10,IL-12 in ARDS rats were increased in 4 h ,8 h,16 h group compared with control group . The levels in IL-10 in serum in 16 h group and IL-10 in lung tissues of 8 h group were lower than that in 4 h group. The Levels of IL-4 in serum in 4 h, 8 h group were higher than that in control group , while IL-4 in 16 h group was lower than that in 8 h group. IL-4 of lung tissues in 4 h,8 h,16 h group were increased significantly,but in 16 h group were lower than that in 8 h group. The biggest changes of pulmonary coefficient and histopathology were observed at 4 h after injection of oleic acid. CONCLUSIONS: IL-4,IL-10 and IL-12 might play important roles in inflammatory reaction induced by oleic acid. The pro- and anti-inflammatory cytokines produced successively during ARDS. The relationship between unbalanced cytokines and lung injury in ARDS needs to be further studied.