Diagnostic value and clinical significance of serum miR-134-5p combined with uterine artery color Doppler ultrasound parameters in endometriosis.

OBJECTIVE

To exploit the combination diagnostic performance of serum microRNA-134-5p (miR-134-5p) and color Doppler ultrasound in patients with endometriosis patients.

METHODS

Quantitative real time polymerase chain reaction (qRT-PCR) analysis was applied to measure relative abundance of miR-134-5p in serum of patients with endometriosis and gynecological benign diseases. Calculation of uterine artery blood flow parameters was conducted using Color Doppler ultrasound. Receiver operating characteristic (ROC) curve was established to evaluate the diagnostic capacity of miR-134-5p and Doppler parameters. Kaplan-Meier method was used for the analysis of recurrence-free survival rate.

RESULTS

Compared with the control group, serum miR-134-5p expression was remarkably diminished in endometriosis patients (P < 0.001). End-diastolic velocity (EDV) and peak systolic velocity (PSV) were notably decreased in endometriosis patients compared with the control group (P < 0.001), while pulsatility index (PI) and resistance index (RI) were distinctly increased (P < 0.001). Serum miR-134-5p expression was positively correlated with EDV (r = 0.5777, P < 0.0001) and PSV (r = 0.6945, P < 0.0001), but negatively correlated with PI (r=-0.6382, P < 0.0001) and RI (r=-0.6247, P < 0.0001). The area under the ROC curve (AUC) of serum miR-134-5p combined with Doppler parameters was 0.905, with the sensitivity of 87.40%, and the specificity of 82.29%. The recurrence-free survival time was shorter in patients with low miR-134-5p expression than those with high miR-134-5p expression (P = 0.013).

CONCLUSION

A better diagnostic value of endometriosis detection could be obtained when serum miR-134-5p was combined with Doppler parameters.