The dynamic balance of T-bet+VGATA-3+ and ROR-γt+ VFOXP3 + cells in rat liver allograft according to acute rejection severity

Objective To evaluate the dynamic balance of Th1, Th2, Th17 and iTreg cells in the process of acute rejection (AR) , orthotopic liver transplantation (OLT) was performed from LEW rats to BN rats. Methods OLT donated by male inbred LEW rats was performed on male inbred BN rats by Kamada' s two-cuff technique without liver arterial anastomosis, AR severity was graded using the Banff schema ,and the immunohistological method was applied to detect the expression of T-bet+, GATA-3+, RORγt+, and FOXP3+ cells in liver allografts. Results The number of T-bet+ cells (Control group: 19. 3±5. 1;Mild AR group: 63. 7±9. 7;Moderate AR group: 40. 9±13. 6;Severe AR group: 32. 3±3. 3) and RORγt + (Control group: 6. 5±1. 4;Mild AR group: 6.4±3. 1;Moderate AR group: 23. 2±9. 1;Severe AR group: 42. 6±14. 1) was significantly increased in mild, moderate and severe AR groups as compared with control group (all P<0.01). The number of GATA-3+cells (Control group: 7. 1±1. 3;Mild AR group: 13. 5±4. 8;Moderate AR group: 23. 2±9. 1;Severe AR group: 42. 6± 14. 1) showed no significant difference between mild AR group and control group (P>0. 05) , while it was significantly higher in moderate and severe AR group (P<0. 05 and P<0. 01). The number of FOXP3 + cells ( Control group;9.5±2.4;Mild AR group: 13. 5±4.8;Moderate AR group: 24.5 ±4.9;Severe AR group: 39.3±11.7) had no statistically significant difference (P>0. 05), but it was significantly decreased in moderate and severe AR group (all P<0.01). The ratio of T-bet + cells/GATA-3+cells was more significantly associated with AR than that of RORγt+cells/FOXP3+ cells in the early stage. Conclusion There is dynamic change in T-het+,GATA-3+,RORγt+and FOXP3+cells in the liver allografts.The T-bet+,GATA-3,RORγt'and FOXP3+cells were involved in AR,and the ratio of T-bet+cell/sGATA-3+cells was more significantly associated with AR than that of RORγt+cells/FOXP3+cells in the early stage.