Expression of the Th1 cells,Th2 cells and related cytokines IL -12 and IL -4 in the lumbar disc herniation / 中国基层医药

ABSTRACT

Objective To investigate the expression of T help cell 1(Th1),T help cell 2(Th2)and related cytokines interleukin 12 (IL -12)and interleukin 4 (IL -4)in the lumbar disc herniation and their clinical significance. Methods 30 postoperative patients with lumbar disc herniation were included as observation group.The control group included 10 patients with lumbar fracture.Flow cytometry was used to distinguish the Th1 and Th2 cells.ELISA was used to measure the expression of interferon γ(IFN -γ),IL -12(the cytokines secreted by Th1 cells)and IL -4 (the cytokine secreted by Th2 cells).RT -PCR was used to detect the mRNA levels of STAT4 and STAT6.Results The distribution of Th1 /Th2 cells was higher in patients with lumbar disc herniation compared to the control group [(6.24 ±2.89)vs (25.12 ±3.20),t =16.26,P <0.05;(2.68 ±0.58)vs (8.16 ±1.20),t =3.84,P <0.05]. The levels of IFN -γand IL -12 in the study group were significantly higher than the control group,the differences were statistically significant[(23.47 ±5.61)vs (7.65 ±3.21),t =8.422,P <0.05;(1.52 ±0.87)vs (5.34 ± 1.39),t =8.135,P <0.05].The level of IL -4 was undetectable in the control group,however,IL -4 expressed in the study group.The expressions of IL -12,IFN -γand IL -4 in the study group were negatively correlated by Spearman correlation analysis (r =-0.57,P <0.05;r =-0.23,P <0.05).In addition,the mRNA level of STAT4 was higher in patients with lumbar disc herniation compared to the control group[(3.21 ±0.49)vs (1.12 ±0.24), t =13.15,P <0.05].Conclusion The expressions of Th1 cells,Th2 cells and related cytokines were participated in the pathogenesis of lumbar disc herniation.