Abstract
To explore the value of has-microRNA-155 (miR-155) in peripheral blood mononuclear cells (PBMNC) in prognostic evaluation of elderly patients with primary immune thrombocytopenia (PITP). One hundred and thirty elderly PITP patients and 60 healthy volunteers in our hospital were selected. The relative expression level of miR-155 in PBMNC was detected by RT-PCR. Unconditional logistic multivariate regression analysis was used to analyze the relationship between miR-155 expression and prognosis of PITP patients, and Kaplan-Meier was further used to analyze the relationship between miR-155 and PITP recurrence. The relative expression level of miR-155 in PBMNC of elderly PITP patients was significantly higher than that in healthy volunteers, and increased significantly with the severity of the disease (P＜0.05). The overall effective rate of elderly PITP patients with miR-155 low-expression was significantly higher than that in the patients with miR-155 high-expression (96.92% vs 72.31%) by after treatment with glucocorticoid. Multivariate analysis showed that miR-155 was an independent risk factor for PITP patients. Elderly patients with high expression of miR-155 showed a higher risk of recurrence. miR-155 in PBMNC has a high accuracy for PITP diagnosis, and the elderly patients with high level of miR-155 show a poor prognosis and a higher risk of recurrence.
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