Biomarkers of glomerular dysfunction in pre-eclampsia - A systematic review

Area of Science:

• Nephrology
• Obstetrics
• Biomarker Research

Background:

• Early pre-eclampsia detection is crucial in antenatal care but often delayed due to non-specific symptoms.
• Podocyte injury in pre-eclampsia leads to proteinuria, highlighting podocytes as key indicators.
• This review focuses on the diagnostic potential of podocyte injury biomarkers.

Purpose of the Study:

• To systematically review and assess the clinical utility of podocyte injury biomarkers for pre-eclampsia prediction.
• To evaluate the diagnostic accuracy of identified biomarkers.

Main Methods:

• A systematic literature review was conducted using QUADAS criteria.
• The review focused on studies evaluating biomarkers of podocyte injury in pre-eclampsia.
• Diagnostic accuracy data for identified biomarkers were pooled.

Main Results:

• Five renal biomarkers were identified: podocytes, nephrin, synaptopodin, podocin, and podocalyxin.
• The pooled sensitivity and specificity for all biomarkers were 0.78 and 0.82, respectively.
• Urinary nephrin demonstrated the highest diagnostic accuracy with 0.81 sensitivity and 0.84 specificity.

Conclusions:

• Glomerular injury biomarkers show potential as diagnostic aids for pre-eclampsia.
• Urinary nephrin is a promising biomarker for pre-eclampsia diagnosis.
• Large-scale prospective studies are required before routine clinical implementation.