[Changes in the expression of T lymphocyte subsets in ageing mice induced by D-galactose].

AIM: To explore the changes and significance of spleen T cell subsets in ageing mice induced by D-galactose. METHODS: Ageing mice model was successfully established by 100 g/L D-galactose. The content of IFN-γ and IL-4 in serum was measured by ELISA. T cell subsets were detected by Immunofluorescence technique and flow cytometry. RESULTS: The content of IFN-γ and IL-4 in the serum was decreased of model group (P<0.01). The naive T cell related molecule, CD45RA was decreased(P<0.05). T cell activation-related molecule, CD25 was decreased(P<0.05). The Foxp3 in CD4(+);CD25(+); T cell was increased(P<0.01). CONCLUSION: In spleen of the ageing mice, the percentage of naive and active T cell are decreased, but The percentage of CD4(+); Tr subset is increased.