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Relationship of serum miRNA-196a and miRNA-92a expression levels with recurrence of cervical cancer after radical surgery |
WANG Yucun1 HU Tuoyang1 CUI Jing1 HAN Ping2 DING Yan1 |
1.The Second Department of Gynecology and Oncology, Gansu Provincial Cancer Hospital, Gansu Province, Lanzhou 730050, China;
2.Department of Radiology, Gansu Provincial Cancer Hospital, Gansu Province, Lanzhou 730050, China |
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Abstract Objective To investigate the relationship between the expression levels of serum microRNA (miRNA)-196a and miRNA-92a and recurrence of cervical cancer after radical surgery. Methods A total of 113 patients undergoing radical resection of cervical cancer who were admitted to Gansu Provincial Cancer Hospital from January 2015 to June 2016 were selected as the cervical cancer group, qRT-PCR was used to detect serum miRNA-196a and miRNA-92a levels in the both groups. The relationship between serum miRNA-196a and miRNA-92a levels and clinicopathological characteristics of cervical cancer patients was analyzed. Post-operative follow-up for five years, and the cervical cancer patients were divided into high expression and low expression according to the mean value of serum miRNA-196a and miRNA-92a. The recurrence rates of cervical cancer patients in high expression and low expression were compared, multivariate Cox regression was used to analyze the influencing factors of cervical cancer after radical surgery. Receiver operator characteristic (ROC) curve was used to analyze the predictive value of serum miRNA-196a and miRNA-92a levels on recurrence of cervical cancer after radical surgery. Results The expression levels of serum miRNA-196a and miRNA-92a in cervical cancer group were higher than those in control group, and the differences were statistically significant (P < 0.05). There were statistically significant differences in serum miRNA-196a and miRNA-92a levels among cervical cancer patients with different Federation of Gynecology and Obstetrics (FIGO) stages, interstitial invasion depth, and lymph node metastasis (P < 0.05). By the last follow-up, 25 patients (22.12%) of 113 cervical cancer patients had recurrence after surgery and the recurrence rate of miRNA-196a and miRNA-92a of the high expression were higher than those of the low expression, and the differences were statistically significant (P < 0.05). FIGO stage ⅡA, interstitial invasion depth ≥1/2, lymph node metastasis, miRNA-196a ≥5.239, and miRNA-92a ≥1.816 were the independent risk factors for recurrence on cervical cancer after radical surgery (HR > 1, P < 0.05). ROC curve showed that the area under the curve of miRNA-196a combined with miRNA-92a in predicting the recurrence on cervical cancer after radical surgery was greater than that of both alone (Z = 2.319, 2.582, P = 0.020, 0.010). Conclusion Serum miRNA-196a and miRNA-92a levels in cervical cancer are high expression, both of which are associated with FIGO stage, depth of interstitial infiltration, lymph node metastasis, and recurrence, and can be used as predictors of recurrence on cervical cancer after radical surgery.
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