Evaluation of the relationship between adenosine deaminase, myeloperoxidase, cholinesterase, preeclampsia severity, and neonatal outcomes.

We aimed to evaluate whole blood adenosine deaminase (ADA), myeloperoxidase (MPO), butyrylcholinesterase (BChE), and acetylcholinesterase (AChE) activities and to investigate whether there was a correlation between these enzymes and severity of preeclampsia and neonatal outcomes. Sixty-one pregnant women with mild (n = 31) or severe (n = 30) preeclampsia and 50 healthy controls were included in this study. Whole blood adenosine deaminase, myeloperoxidase, butyrylcholinesterase, and acetylcholinesterase activities were measured. Adenosine deaminase and myeloperoxidase activities were significantly higher in both mild and severe preeclamptic women than they were in the controls. There was also a significant difference between the severe and the mild preeclamptic groups with respect to these enzyme activities. Although BChE activity was lower in the severe preeclamptic women than it was in the healthy controls (P < .05), AChE activity was similar in all groups (P > .05). We noted an inverse correlation between ADA activity and birth weight (r = -0.337) (P < .05) and between MPO activity and Apgar scores at 1 and 5 minutes (r = -0.438 and r = -0.475, respectively, P < .01). We concluded that elevated ADA and MPO but not AChE activities may correlate with disease severity and neonatal outcomes in preeclamptic women. Further studies are needed to elucidate the exact roles of ADA and MPO in the pathophysiology of preeclampsia.