Abstract：Objective To study the relationship between the expression of plasma miRNA-126 and hypertensive disorder complicating pregnancy. Methods A total of 93 patients with hypertensive disorder complicating pregnancy admitted in Luzhou People′s Hospital of Sichuan Province from February 2015 to February 2018 were selected as the study subjects and grouped according to their diseases. There were 30 cases in pregnancy hypertension group, 29 cases in mild preeclampsia group and 34 cases in severe preeclampsia group. Another 20 healthy pregnant women who underwent physical examination during the same period were taken as control group. Reverse transcription-polymerase chain reaction (RT-PCR) was used to detect the expression of plasma miRNA-126 of each group, and the levels of systolic blood pressure, diastolic blood pressure and 24-hour proteinuria level were compared, and the correlation between them and the expression of plasma miRNA-126 were analyzed. Results Compared with the control group, the expression of plasma miRNA-126 was down-regulated in the pregnancy hypertension group, while the expression of plasma miRNA-126 in the mild preeclampsia group was lower than that in the pregnancy hypertension group, and the miRNA-126 expression in the severe preeclampsia group was lower than that in the mild preeclampsia group, the difference were statistically significant (P < 0.05). The systolic blood pressure and 24-hour proteinuria level in pregnancy hypertension group were significantly higher than those in control group; the systolic blood pressure and 24-hour proteinuria level in mild preeclampsia group were higher than those in pregnancy hypertension group; the systolic blood pressure and 24-hour proteinuria level in severe preeclampsia group were higher than those in mild preeclampsia group; the diastolic blood pressure levels in control group were lower than those in pregnancy hypertension group, mild preeclampsia group, severe preeclampsia group, the differences were statistically significant (all P < 0.05). According to Spearman correlation analysis, the expression of miRNA-126 gene in patients with hypertensive disorder complicating pregnancy was negatively correlated with systolic blood pressure, diastolic blood pressure and 24-hour proteinuria level (r = -0.583, -0.626, -0.611, P < 0.05). Conclusion The expression of plasma microRNA-126 in patients with hypertensive disorder complicating pregnancy is significantly down-regulated, and with the aggravation of the disease, the expression of plasma miRNA-126 is down-regulated more obviously. The down-regulation of the expression of plasma miRNA-126 may play an important role in the occurrence and development of hypertensive disorder complicating pregnancy.
2019, Vol. 16 
京公网安备 11010502046598号