[Levels of T-Lymphocyte Subsets, IL-17, IL-35 and IFN-γ in Peripheral Blood and Their Clinical Significance in Patients with Multiple Myeloma].

OBJECTIVE: To explore the levels of T-lymphocyte subsets and IL-17, IL-35, IFN-γ in peripheral blood of patients with multiple myeloma(MM) and their clinical significance.

METHODS: A total of 86 MM patients in our hospital from January 2014 to January 2017 were enrolled in MM group and 30 healthy persons were enrolled in control group, the CD4+ /CD8+ T cells ratio, CD4+ CD25high/+ CD127low/- Treg level in peripheral blood were detected by flow cytometer. The levels of IL-17, IL-35 and IFN-γ in peripheral serum were detected by ELISA, and the differences of detected indicators between different groups were compared.

RESULTS: Compared with control group, the proportion of CD4+ T cells and CD4+ /CD8+ T cells ratio decreased, the proportion of CD8+ T cells and Treg increased in MM group. The differences of T lymphocyte subsets level between group III stage of MM and control group were statistically significant (P<0.05). With enhancing of clinical stages, Treg level showed a increasing trend, especially in III stage (P<0.05), the serum level of IL-17 as followed in turn: III stage>II stage>I stage>control, the serum level of IL-35 and IFN-γ as followed in turn: control>I stage>II stage>III stage (P<0.05). In terms of disease status, the propurtion of Treg cells as fllowed in turn: disease progression stage>stable stage>control (P<0.05), the serum level of IL-17 as followed in turn also: disease progression stage>stable stage (P<0.05), while the serum level of IL-35 and IFN-γ as followed in turn: control>disease table stage>progression stage (P<0.05).

CONCLUSION: The abnomal level of T-lymphocyte subsets, Treg, IL-17, IL-35 and IFN-γ are related with progression and prognosis of MM patients.