The expression of TRPM7 in serum of patients with sepsis, its influences on inflammatory factors and prognosis, and its diagnostic value.

OBJECTIVE: This study aimed to investigate the expression of TRPM7 in the serum of patients with sepsis and its influences on inflammatory factors and prognosis. PATIENTS AND METHODS: A prospective analysis was performed. 78 patients with sepsis were enrolled in the experimental group and treated from May 2015 to April 2017 in the Emergency Department of The Second Hospital of Dalian Medical University, and 75 healthy people were collected in the control group and received physical examinations during the same period. Real-time quantitative PCR was used to detect the relative expression of TRPM7, and sandwich enzyme-linked immunosorbent assay (ELISA) was applied to measure the serum expression levels of TNF-α, IL-6, and IL-10 in patients. Besides, the receiver operating characteristic (ROC) curve was drawn to analyze the diagnostic value of TRPM7. RESULTS: The serum level of TRPM7 mRNA in the experimental group was higher than that in the control group (p<0.05). The serum levels of TNF-α, IL-6, and IL-10 in the experimental group were significantly higher than those in the control group (p<0.05). The optimal cut-off point value for the diagnosis of sepsis was 0.841; the specificity was 86%, and the sensitivity was 99%. Based on the survival data of the experimental group and the average expression level of TRPM7 which was 1.38, patients with a TRPM7 expression level less than 1.38 were divided into the low expression group, while those with a TRPM7 expression level equal or more than 1.38 were divided into the high expression group. The survival rate of the high expression group was significantly lower than that of the low expression group (p<0.05). CONCLUSIONS: In summary, TRPM7, with high expression level in the serum of patients with sepsis is expected to be a potential prognostic indicator for sepsis.