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Cystatin C and preeclampsia: a case control study.

Nora Franceschini¹, Chunfang Qiu, David A Barrow

¹Department of Epidemiology, University of North Carolina, Chapel Hill, North Carolina 27514-3628, USA. noraf@unc.edu

|January 17, 2008

Summary

Elevated maternal plasma cystatin C levels are strongly associated with preeclampsia risk. Higher cystatin C concentrations significantly increased the likelihood of developing preeclampsia, independent of other risk factors.

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The Importance of Correct Protein Concentration for Kinetics and Affinity Determination in Structure-function Analysis

The Importance of Correct Protein Concentration for Kinetics and Affinity Determination in Structure-function Analysis

Published on: March 17, 2010

Area of Science:

Obstetrics and Gynecology
Clinical Chemistry
Renal Physiology

Background:

Pregnancy naturally elevates plasma cystatin C.
Preeclampsia is associated with significantly higher cystatin C levels than normal pregnancy.
Previous research lacked quantification of preeclampsia risk across cystatin C concentration ranges and adjustment for confounders.

Purpose of the Study:

To quantify the association between maternal plasma cystatin C concentrations and preeclampsia risk.
To adjust for common confounding factors in the preeclampsia-cystatin C relationship.

Main Methods:

A case-control study involving 100 preeclampsia cases and 100 normotensive controls.
Exclusion of participants with pre-existing hypertension, diabetes, or renal disease.
Multivariable logistic regression analysis to estimate adjusted odds ratios (OR) for preeclampsia across cystatin C quartiles.

Main Results:

Mean plasma cystatin C was significantly higher in preeclampsia cases (1.38 mg/L) versus controls (1.22 mg/L).
Compared to the lowest quartile, the fourth quartile of cystatin C showed a 12-fold increased risk of preeclampsia.
This association remained significant after adjusting for maternal age, BMI, physical inactivity, smoking, and gestational age.

Conclusions:

Elevated maternal plasma cystatin C is an independent risk factor for preeclampsia.
Higher cystatin C levels are strongly and quantitatively linked to increased preeclampsia risk.
Further research is needed to explore cystatin C's role in preeclampsia severity and outcomes.