Decreased Level of Nitric Oxide in Preeclamptic Pregnancy: A Relationship with PON1 Arylesterase Activity

ABSTRACT

Aims: The aim of the study was to evaluate the status and diagnostic utility of PON1.(Paraoxonase-1) Arylesterase and nitric oxide as indicator of antioxidant status in preeclampsia.Study Design:Analytical case control study.Place and Duration of StudySample Department of obstretics and gynecology Department, G. M. C. Ambajogai, between July 2010 and July 2012.Methodology:We conducted a case-control study of 57 women with preeclampsia and 57 women with uncomplicated deliveries. We measured PON1 Arylesterase activity, Nitric oxide and lipid profile.Results:Serum levels of LDLc (low density lipoprotein cholesterol) are higher in cases than in controls and are statistically significant (p=0.023). However serum HDLc (high density lipoprotein cholesterol) levels are decreased significantly (p = 0.017). Serum PON1 Arylesterase showed significant decrease in cases152.68 KU/L versus controls 180.89 KU/L, p value=0.002. Serum nitric oxide also showed significant decrease in cases 22.77 ± 4.792 umol/L versus controls 25.127 umol/L, p=0.010. PON1 Arylesterase activity is found to be positively correlated with serum HDL cholesterol (r= 0.449, p value< 0.001). Multivariate logistic regression analysis was done.Conclusion:Our observed results show decrease in the antioxidant PON1 Arylesterase activity point towards their role in the pathogenesis of Preeclampsia