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Regulatory T cells and their prognostic value in hepatopancreatobiliary tumours
Background/Aims:
The aim of this study was to determine the prognostic values of Foxp3+ Treg cells, CD4+ Tcells and CD8+ T cells in cancer cases of gallbladder, pancreas and liver.
Methodology:
This study included 20 patients with gallbladder cancer, 25 patients with pancreatic cancer and 8 patients with liver cancer. Foxp3, CD4 and CD8 were immunohistochemically evaluated and compared with histopathological and clinical prognostic parameters.
Results:
Foxp3, CD4 and CD8 expression levels were significantly higher in peritumoral areas than in intratumoral areas in patients with gallbladder, pancreas, liver cancers (p<0,05). Positivity of Foxp3, CD4 and CD8 was correlated with advanced stage (p<0,05), poor differentiation, lymphovascular invasion, perineural invasion, advanced age. Patients with high positivity of Foxp3 had a shorter disease free survival (p<0,05).
Conclusion:
Our results indicate that the ratio of Tregs/T helper cells (Foxp3+/CD4+) cells was higher in intratumoral area in hepatopancreatobiliary tumors. We conclude that intratumoral inlamatory cells might work for cancer cells, besides peritumoral cells work against cancer cells.
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