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Adiponectin and Its Isoforms in Pathophysiology.

Merel van Andel1, Annemieke C Heijboer2, Madeleine L Drent3

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|April 16, 2018
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Summary

Adiponectin, a hormone with multiple forms, is crucial for metabolic health. Its altered levels in obesity impact inflammation and mortality, but measurement challenges hinder understanding.

Keywords:
Adiponectin isoformsAdiponectin metabolismCardiovascular diseaseMethod comparisonObesity

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Area of Science:

  • Endocrinology
  • Metabolic Syndrome
  • Molecular Biology

Background:

  • Adiponectin circulates in various isoforms, with high molecular weight (HMW) adiponectin being the most biologically active.
  • HMW adiponectin enhances glucose uptake, insulin sensitivity, and fatty acid oxidation.
  • Obesity disrupts adiponectin isoform formation, inversely correlating with metabolic disease markers.

Purpose of the Study:

  • To review adiponectin isoform formation and function under physiological conditions.
  • To highlight disruptions in adiponectin isoform formation in obesity and related pathologies.
  • To discuss the role of adiponectin isoforms in inflammation, cardiac and kidney disease, and their association with mortality.

Main Methods:

  • Literature review focusing on adiponectin isoform physiology, pathophysiology, and measurement.
  • Synthesis of existing data on adiponectin's role in metabolic health, inflammation, and disease.
  • Analysis of challenges and future directions in adiponectin isoform measurement.

Main Results:

  • Adiponectin isoforms are critical regulators of glucose and lipid metabolism.
  • Obesity-induced changes in adiponectin isoforms are linked to insulin resistance and inflammation.
  • Adiponectin isoforms act as acute-phase reactants, influencing inflammatory responses in various diseases.
  • A U-shaped association exists between adiponectin levels and mortality.
  • Measurement of adiponectin isoforms is complex and lacks a gold standard.

Conclusions:

  • Adiponectin isoforms play a vital role in metabolic regulation and inflammation.
  • Disrupted adiponectin isoform balance in obesity contributes to pathological conditions.
  • Accurate measurement of adiponectin isoforms is essential for understanding their pathophysiological roles and clinical implications.
  • Further research is needed to overcome measurement challenges and clarify adiponectin's complex associations with disease and mortality.