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Obstetrics and Gynecology
|November 7, 2018
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Summary
This summary is machine-generated.

Urinary C5b-9 concentrations are significantly elevated in preeclampsia with severe features, offering a potential diagnostic marker. Plasma C5b-9 did not show significant differences, highlighting urine as a key indicator.

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Area of Science:

  • Obstetrics and Gynecology
  • Nephrology
  • Immunology

Background:

  • Preeclampsia with severe features is a serious pregnancy complication.
  • The role of the complement system, specifically C5b-9, in preeclampsia pathogenesis is under investigation.
  • Accurate diagnostic markers for preeclampsia with severe features are crucial for timely intervention.

Purpose of the Study:

  • To determine if blood and urine concentrations of C5b-9 are elevated in women with preeclampsia with severe features.
  • To assess the diagnostic potential of C5b-9 in differentiating preeclampsia with severe features from other hypertensive disorders of pregnancy.

Main Methods:

  • A prospective, multicenter case-control study involving 352 women.
  • Measurement of soluble C5b-9 in blood and urine using enzyme-linked immunosorbent assays.
  • Comparison of C5b-9 levels between cases (preeclampsia with severe features) and controls (healthy or other hypertensive disorders).

Main Results:

  • Urine C5b-9 concentrations were significantly higher in women with preeclampsia with severe features compared to all control groups (P<.001).
  • Plasma C5b-9 concentrations did not differ significantly between cases and the overall control group.
  • Receiver operating characteristic analysis indicated urine C5b-9 can differentiate preeclampsia with severe features (AUC 0.74), with a cut-off of 22 ng/mL showing high diagnostic accuracy (aOR 10.0).

Conclusions:

  • Urinary excretion of the terminal complement effector C5b-9 is increased in women with preeclampsia with severe features.
  • Urine C5b-9 shows promise as a non-invasive biomarker for diagnosing preeclampsia with severe features.
  • Further research can explore C5b-9's role in the pathophysiology and management of hypertensive disorders of pregnancy.