alexa Prognostic significance of T helper 1 and 2 and T cytotoxic 1 and 2 cells in patients with non-small cell lung cancer.
General Science

General Science

Biological Systems: Open Access

Author(s): Ito N, Suzuki Y, Taniguchi Y, Ishiguro K, Nakamura H,

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Abstract BACKGROUND: We report the prognostic significance of peripheral and tumor-infiltrating Th1, Th2, Tc1 and Tc2 cells in lung cancer patients. MATERIALS AND METHODS: We evaluated the rates of interferon (IFN)-gamma+/CD4+ cells (Th1), interleukin (IL)-4+ /CD4+ cells (Th2), IFN-gamma+/CD8+ cells (Tc1), IL-4+ /CD8+ cells (Tc2), and the ratio of Th1 to Th2 and that of Tc1 to Tc2 among peripheral blood lymphocytes (PBL) and tumor-infiltrating lymphocytes (TIL), in 51 consecutive patients with non-small cell lung cancer, by detecting the intracellular cytokine production using three-color flow cytometry. RESULTS: Patients with a low Th1/Th2 ratio in peripheral blood lymphocytes had a significantly better prognosis than those with a high Th1/Th2 ratio (5-year survival rate: low: 74.7\% vs. high: 50.3\%; p=0.038). Patients with a low Th1/Th2 ratio in peripheral blood had a significantly better prognosis than those with a high Th1/Th2 ratio in pathological Stage II or III (5-year survival rate: low: 66.6\% vs. high: 18.2\%; p=0.018). CONCLUSION: A high Th1/Th2 ratio in peripheral blood is a negative prognostic factor, especially in pathological Stage II or III non-small cell lung cancer patients.
This article was published in Anticancer Res and referenced in Biological Systems: Open Access

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