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Analysis of Th1/Th2 Balance and Related Cytokine Changes in the Peripheral Blood of Patients with Multiple Myeloma.

Clinical Laboratory 2024 September 1
BACKGROUND: This study aimed to explore the changes in Th cells and cytokines in the peripheral blood of patients with multiple myeloma before and after treatment and at the time of the bacterial infection.

METHODS: In total, 23 newly diagnosed MM patients admitted to the Hospital and 23 healthy individuals were selected as the study group and the control group, respectively. Flow cytometry was used to detect the Th1 and Th2 lymphocytes and cytokines, such as IL-2, IL-4, IL-5, IL-6, IL-8, IL-10, INF-γ, IL-17A, IL-1b, TNF-α, TNF-β, and IL-12P70, in the peripheral blood of the patients at initial diagnosis, before and after treatment, and at the time of the bacterial infection.

RESULTS: The Th1% and Th1/Th2 ratio at the time of the initial diagnosis were lower in the MM patients than in the control group, whereas the Th2% at initial diagnosis was higher in the MM patients than in the control group. The levels of IL-6, IL-8, IL-10, and IL-17A at initial diagnosis were higher in the MM patients than in the control group. After 4 cycles of treatment, the Th2% in the patients was lower than before the treatment and the Th1/Th2 ratio in the patients was higher than before the treatment. The Th1% and the levels of IL-6, IL-8, IL-10, and INF-γ increased, while the level of IL-12P70 decreased, when MM patients got a bacterial infection. The abovementioned differences were statistically significant (p < 0.05).

CONCLUSIONS: The Th1/Th2 deviation affects the immune function of the MM patients. There were significant changes in the Th1 and Th2 lymphocytes and cytokines in newly diagnosed MM patients after the treatment. The changes in the Th lymphocytes and cytokines may be an indicator of bacterial infection.

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