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Chicoric acid mitigates impaired insulin sensitivity by improving mitochondrial function.

Ji-Sun Kim1,2, Hyunjung Lee2, Chang Hwa Jung2

  • 1a Department of Biotechnology, College of Life Sciences and Biotechnology , Korea University , Seoul , Republic of Korea.

Bioscience, Biotechnology, and Biochemistry
|March 21, 2018
PubMed
Summary

Chicoric acid (CA) improves insulin sensitivity by enhancing mitochondrial function. This study shows CA benefits glucose uptake and insulin signaling, offering potential for metabolic disorder treatment.

Keywords:
Chicoric aciddiet-induced obesityglucose uptakeinsulin resistancemitochondria

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Area of Science:

  • Biochemistry
  • Metabolic Diseases
  • Mitochondrial Biology

Background:

  • Mitochondrial dysfunction is linked to insulin resistance.
  • Chicoric acid (CA) shows potential benefits for insulin sensitivity.
  • The role of CA in mitochondrial function concerning insulin resistance is unclear.

Purpose of the Study:

  • To investigate the effects of chicoric acid (CA) on insulin resistance.
  • To elucidate the impact of CA on mitochondrial dysfunction.
  • To determine if CA can improve insulin sensitivity through mitochondrial enhancement.

Main Methods:

  • Palmitate-induced insulin-resistant C2C12 myotubes were used to assess glucose uptake and insulin signaling.
  • Diet-induced obese mice were treated with CA to evaluate glucose tolerance and insulin sensitivity.
  • Mitochondrial function markers, including DNA content, enzyme activity, ATP levels, and gene expression, were analyzed in liver and skeletal muscle.

Main Results:

  • CA improved glucose uptake and insulin signaling in insulin-resistant myotubes.
  • CA enhanced mitochondrial membrane potential and oxygen consumption in vitro.
  • In obese mice, CA treatment ameliorated glucose tolerance, increased insulin sensitivity, and restored gene expression related to glucose metabolism.
  • CA significantly boosted mitochondrial DNA, citrate synthase, and ATP content, alongside increased expression of mitochondrial biogenesis and oxidative phosphorylation genes in key metabolic tissues.

Conclusions:

  • Chicoric acid (CA) effectively attenuates insulin resistance.
  • CA promotes insulin sensitivity by improving mitochondrial function.
  • CA represents a potential therapeutic agent for metabolic disorders associated with mitochondrial dysfunction.