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[Regulation Effect of Myeloid Leukemia No.1 Chinese Herb Medicine Prescription Combined with Chemotherapy on Th17 Cells in Bone Marrow of Patients with Acute Myeloid Leukemia].

OBJECTIVE
To explore the regulation effect of myeloid leukemia No.1 Chinese herb medicine prescription combined with chemotherapy on Th17 cells in bone marrow fluid of AML patients, so as to provide guidance for improving AML treatment effect and patients' long-term survival.


METHODS
Seventy patients with AML who were hospitalized in Department of Hematology, Wuwei People's Hospital from April 2017 to August 2019 were selected and enrolled in AML group, 25 healthy volunteers were selected and enrolled in control group; then according to therapeutic regimen, AML patients were divided into 2 groups: combined therapy group (myeloid leukemia NO.1 Chinese herb medicine prescription combined with chemotherapy) and non-combined therapy group (chemotherapy alone). Flow cytometry was used to detect the ratio of CD3+ CD161+ IL-17+ IFN-γ+ T cells in bone marrow fluid, and ELISA was used to detect the vascular endothelial growth factor (VEGF) and interleukin-17 (IL-17) concentrations in bone marrow fluid. Statistical analysis was performed on the data with SPSS 22.0.


RESULTS
The ratio of CD3+ CD161+ IL-17+ IFN-γ+ T cells, VEGF and IL-17 concentration in newly diagnosed and relapsed AML patients were significantly higher than those in the normal control group (P<0.001); while those in CR and DFS stage patients were significantly lower than those in newly diagnosed and relapsed patients (P<0.001), and the ratio of CD3+ CD161+ IL-17+ IFN-γ+ T cells, VEGF and IL-17 concentration in DFS patients with AML were not significantly different from those in the control group (P>0.05). The ratio of CD3+ CD161+ IL-17+ IFN-γ+ T cells, VEGF and IL-17 concentration in CR stage of AML patients treated with chemotherapy alone were significantly higher than those in the control group (P<0.05), but there was no difference between combined therapy group and the control group; the ratio of CD3+ CD161+ IL-17+ IFN-γ+ T cells, the concentration of VEGF and IL-17 in CR stage of AML patients treated with chemotherapy alone were higher than those of patients treated with combined therapy regimen (P<0.05). AML patients treated with combined therapy regimen had a significantly higher complete remission rate compared with patients received chemotherapy alone (P<0.05), but the recurrence rate was significantly lower (P<0.05).


CONCLUSION
Th17 cells expression in bone marrow of newly diagnoses and relapsed AML patients significantly increase, and decrease significantly after treatment. Myeloid leukemia No.1 Chinese herb prescription combined with chemotherapy can significantly increase the CR rate and reduce the RL rate for AML.