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Related Experiment Video

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Hyperinsulinemia adversely affects lung structure and function.

Suchita Singh1, Manish Bodas1, Naveen K Bhatraju1

  • 1Center of Excellence for Translational Research in Asthma and Lung Disease, CSIR-Institute of Genomics and Integrative Biology, New Delhi, India;

American Journal of Physiology. Lung Cellular and Molecular Physiology
|February 28, 2016
PubMed
Summary
This summary is machine-generated.

High insulin levels may harm lung health. This study shows insulin increases airway smooth muscle cell growth and lung collagen, potentially contributing to asthma-like symptoms.

Keywords:
hyperinsulinemiainsulin resistancelung functionβ-catenin

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Area of Science:

  • Pulmonary Medicine
  • Endocrinology
  • Cell Biology

Background:

  • Limited understanding of hyperinsulinemia's effects on lung function.
  • Rising prevalence of obesity and insulin resistance.
  • Epidemiological links between insulin resistance and asthma.

Purpose of the Study:

  • Investigate the adverse effects of insulin on respiratory health.
  • Examine insulin's impact on airway smooth muscle (ASM) cells.
  • Determine the role of insulin in lung structure and function.

Main Methods:

  • In vitro studies using primary human ASM cells exposed to insulin.
  • In vivo studies using intranasal insulin administration in mice.
  • Analysis of collagen deposition, airway hyperresponsiveness, and PI3K/Akt/β-catenin pathway activation.

Main Results:

  • Insulin significantly increased ASM cell proliferation, collagen release, calcium response, and mitochondrial respiration.
  • Intranasal insulin in mice led to increased lung collagen and airway hyperresponsiveness.
  • Insulin-induced PI3K/Akt activation of β-catenin was observed in lung cells and tissues.

Conclusions:

  • Hyperinsulinemia may negatively impact airway structure and function.
  • Insulin-induced β-catenin activation and ASM cell effects may contribute to asthma-like phenotypes.
  • Further research is warranted on inhaled insulin's respiratory implications.