Expression and mechanism of micro-ribonucleic acid-29a in chorionic villi obtained at curettage with recurrent abortion

Objective: Explored the expression of miR-29a in puerpera with RSA and its influencing mechanism. Method: 52 patients with RSA group were divided into 30 cases representing ≤3 abortions and 22 cases with ≥4 abortions,thirty healthy women who had induced abortion during the same period as the control group. The differences in the expression levels of miR-29a, FKBP52 mRNA, VEGF, MVD, and HIF-lα were compared between the groups by conducting a correlation analysis. Results: The expression levels of miR-29a, VEGF, MVD, and HIF-lα in the chorionic villus were significantly higher among patients in the group with ≥4 abortions than in those in the group with ≤3 abortions (P < 0.05), and the expression levels of FKBP52 mRNA were lower in the former than in the latter (P < 0.05). A Spearman correlation analysis revealed that the expression levels of miR-29a were positively correlated with the levels of VEGF, MVD, and HIF-lα (P < 0.05) and negatively correlated with the expression level of FKBP52 mRNA (P < 0.05). Conclusion: MiR-29a may be involved in the pathogenesis of RSA by inhibiting the protein expressions of FKBP52 and VEGF, promoting the apoptosis of trophoblasts, and impairing neovascularization, resulting in placental vascular dysplasia..