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Preeclampsia is still a major cause of maternal death in pregnancy which needs efforts to prevent and early detection. Nitric oxide and Corticotrophin Releasing Hormone has an important role in the pathogenesis of preeclampsia to determine differences in concentrations of NO and CRH in normal pregnancy and preeclampsia, as well as to study the correlation both on the incidence of preeclampsia. This is a cross sectional study. Blood samples obtained from patients with preeclampsia (30 samples) and normal pregnancies as controls (30 samples) in accordance with inclusion and exclusion criteria. NO concentration was examined with essay protocol, and CRH concentrations with ELISA method. Then be calculated by statistical analysis: chi square, t test, Mann-Whitney, and Spearman Rank correlation coefficient. Based on statistical analysis, there was no significant difference (p > 0.05) from the characteristics of maternal age, pregnancy weeks, and parity in both study groups, so the two groups of homogeneous and comparable. The mean concentration of NO in preeclampsia was lower (3.780 μM) compared with normal pregnancy (13.360 μM). There was significant correlation between NO and CRH concentrations in normal pregnancy and preeclampsia (p < 0.001). The involvement of NO/c-GMP pathway is very possible in the pathogenesis of preeclampsia.

Correlation of Nitric Oxide (NO) and Corticotrophin Releasing Hormone (CRH) between Normal Pregnancy and Preeclampsia