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Combined Intravital Microscopy and Contrast-enhanced Ultrasonography of the Mouse Hindlimb to Study Insulin-induced Vasodilation and Muscle Perfusion
08:22

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Published on: March 20, 2017

Vascular actions of insulin in obesity

H Yki-Järvinen1, J Westerbacka

  • 1University of Helsinki, Department of Medicine, Finland.

International Journal of Obesity and Related Metabolic Disorders : Journal of the International Association for the Study of Obesity
|September 21, 2000
PubMed

Insights

Abdominal obesity increases cardiovascular disease risk. Insulin resistance affects non-classic insulin actions, impacting vascular health, but the exact causes remain unclear.

Area of Science:

  • Metabolic disorders
  • Vascular biology
  • Obesity research

Background:

  • Abdominal obesity is a major risk factor for cardiovascular disease (CVD).
  • Skeletal muscle glucose metabolism defects do not fully explain the link between insulin resistance and vascular disease.
  • Non-classic insulin actions on hemodynamics, nerve function, hemostasis, and lipoprotein metabolism are potentially more relevant to vascular complications.

Purpose of the Study:

  • To investigate the role of non-classic insulin actions in the link between obesity and cardiovascular disease.
  • To explore insulin resistance in non-classic insulin effects in obese individuals.

Main Methods:

  • The study reviews existing literature on insulin resistance and its non-classic effects.
  • Focuses on insulin's actions beyond glucose uptake, including vascular, neural, hemostatic, and metabolic pathways.

Main Results:

  • Obese individuals exhibit insulin resistance to several non-classic insulin actions.
  • These include impaired insulin effects on large vessel compliance, nitric oxide-mediated vasodilation, sympathetic nervous system activation, platelet anti-aggregation, and hepatic very low-density lipoprotein production.

Conclusions:

  • Insulin resistance to non-classic insulin actions is evident in obesity.
  • Understanding the mechanisms behind this resistance is crucial for elucidating the connection between obesity and cardiovascular disease.

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