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.
Abstract

Related Concept Videos

Hormonal Regulation01:33

Hormonal Regulation

The renin-aldosterone system is an endocrine system which guides the renal absorption of water and electrolytes, thus managing blood pressure and osmoregulation. Activation of the system begins in the kidneys with a small cluster of cells adjacent to the afferent and efferent blood vessels of the renal corpuscle. As the nephrons are filtering blood, juxtaglomerular cells monitor blood pressure. If they detect a decrease in pressure, they release the hormone renin into the bloodstream.
Diabetic Nephropathy01:28

Diabetic Nephropathy

Definition Diabetic nephropathy is a chronic kidney complication that results from prolonged hyperglycemia.Prevalence It is the most common cause of chronic kidney disease (CKD) and end-stage renal disease (ESRD) worldwide, affecting up to half of individuals with diabetes.Pathophysiology • Sustained hyperglycemia triggers multiple hemodynamic and metabolic changes in the kidney. • Early in the disease, increased renal blood flow and glomerular hyperfiltration occur due to afferent arteriolar...
Cell Specific Gene Expression01:58

Cell Specific Gene Expression

Multicellular organisms contain a variety of structurally and functionally distinct cell types, but the DNA in all the cells originated from the same parent cells. The differences in the cells can be attributed to the differential gene expression. Liver cells, whose functions include detoxification of blood, production of bile to metabolize fats, and synthesis of proteins essential for metabolism, must express a specific set of genes to perform their functions. Gene expression also varies with...
Nephrotic Syndrome I : Introduction01:24

Nephrotic Syndrome I : Introduction

Nephrotic Syndrome is a chronic kidney disorder defined by clinical findings such as severe proteinuria, hypoalbuminemia, hyperlipidemia, and edema. These symptoms result from damage to the glomeruli, the kidney’s filtering units, increasing their permeability to proteins.Definition and Meaning:Proteinuria, defined as the loss of more than 3.5 grams of protein per day in adults, is a crucial feature of nephrotic syndrome. This condition is often accompanied by edema, the accumulation of fluid...
Type II Diabetes II: Pathophysiology01:24

Type II Diabetes II: Pathophysiology

PathophysiologyType 2 diabetes mellitus (T2DM ) is a chronic metabolic disorder characterized by insulin resistance and progressive pancreatic β-cell dysfunction, leading to impaired glucose homeostasis. It results from interactions among genetic predisposition, environmental factors, and metabolic stressors, such as overnutrition and a sedentary lifestyle.Insulin Resistance and Glucose DysregulationEarly T2DM involves insulin resistance in skeletal muscle, adipose tissue, and the liver.
cAMP-dependent Protein Kinase Pathways01:25

cAMP-dependent Protein Kinase Pathways

Cyclic Adenosine Monophosphate (cAMP) is an essential second messenger that activates protein kinase A (PKA) and regulates various biological processes. A single epinephrine molecule binds to GPCR and activates several heterotrimeric G proteins, each stimulating multiple adenylyl cyclase, amplifying the signal, and synthesizing large numbers of cAMP molecules. Small changes in cAMP concentration affect PKA activity. The binding of four cAMP molecules induces a conformational change in PKA,...