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Circulating high-molecular-weight adiponectin is upregulated in preeclampsia and is related to insulin sensitivity
Mathias Fasshauer1, Theresa Waldeyer, Jeannette Seeger
1Department of Internal Medicine III, University of Leipzig, Ph.-Rosenthal-Str. 27, 04103 Leipzig, Germany. mathias.fasshauer@medizin.uni-leipzig.de
Insights
Maternal serum adiponectin, including the biologically active high-molecular-weight (HMW) form, is significantly elevated in preeclampsia (PE). This finding suggests adiponectin may play a role in improving insulin sensitivity and cardiovascular health during pregnancy.
Area of Science:
- Obstetrics and Gynecology
- Cardiovascular Medicine
- Endocrinology
Background:
- Preeclampsia (PE) is a pregnancy complication linked to future metabolic and cardiovascular risks.
- Adiponectin, an insulin-sensitizing adipokine, is paradoxically upregulated in PE.
- High-molecular-weight (HMW) adiponectin is considered the biologically active form.
Purpose of the Study:
- To quantify serum concentrations of HMW adiponectin and total adiponectin in preeclampsia (PE) patients.
- To investigate the relationship between adiponectin levels and markers of renal function, glucose, and lipid metabolism in PE.
Main Methods:
- Serum samples from 16 PE patients and 20 control pregnant women were analyzed using ELISA.
- Quantification of both high-molecular-weight (HMW) adiponectin and total adiponectin.
- Correlation analysis with clinical and biochemical measures.
Main Results:
- Maternal serum HMW adiponectin and total adiponectin levels were nearly twofold higher in PE patients compared to controls.
- Adiponectin levels showed a positive correlation with creatinine and a negative correlation with fasting insulin.
- These associations remained significant in both univariate and multivariate analyses.
Conclusions:
- Maternal serum adiponectin, including the HMW form, is significantly increased in preeclampsia.
- Elevated adiponectin is associated with markers of insulin sensitivity and renal dysfunction in PE.
- Adiponectin may be involved in a feedback mechanism to enhance insulin sensitivity and cardiovascular health in preeclampsia.
Objective:
Preeclampsia (PE) is a serious cardiovascular complication in pregnancy which is associated with an increased future metabolic and cardiovascular risk for mother and newborn. Recently, a paradoxical upregulation of the insulin-sensitizing and anti-atherogenic adipokine adiponectin has been shown in PE. Furthermore, high-molecular-weight (HMW) adiponectin has been suggested as the biologically active form of this adipokine.
Design And Methods:
HMW adiponectin and total adiponectin serum concentrations were quantified by ELISA in PE (n=16) patients and pregnant control women without PE (n=20). Furthermore, HMW adiponectin and total adiponectin were correlated to clinical and biochemical measures of renal function, glucose, and lipid metabolism, as well as inflammation.
Results:
Median maternal HMW adiponectin and total adiponectin levels were significantly and independently upregulated almost twofold in PE when compared with controls. HMW adiponectin and total adiponectin correlated positively with creatinine and negatively with fasting insulin in univariate and multivariate analyses.
Conclusions:
We show that maternal HMW adiponectin and total adiponectin serum concentrations are significantly increased in PE and are positively associated with markers of insulin sensitivity and renal dysfunction. Adiponectin might be part of a physiological feedback mechanism improving insulin sensitivity and cardiovascular health in PE.
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