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Rapid Rise of Cardio-Ankle Vascular Index May Be a Trigger of Cerebro-Cardiovascular Events: Proposal of Smooth

Kazuhiro Shimizu1, Mao Takahashi1, Shuji Sato1

  • 1Department of Internal Medicine, Toho University Sakura Medical Center, Sakura, Chiba, Japan.

Vascular Health and Risk Management
|February 19, 2021
PubMed

Insights

A rapid rise in the cardio-ankle vascular index (CAVI), an indicator of arterial stiffness, suggests smooth muscle cell contraction. This finding supports a new hypothesis linking arterial smooth muscle cell contraction to plaque rupture in cardiovascular disease.

Area of Science:

  • Cardiovascular medicine
  • Vascular biology
  • Biomedical engineering

Background:

  • Cardiovascular diseases are the leading global cause of mortality.
  • Arterial stiffness, measured by the cardio-ankle vascular index (CAVI), reflects arteriosclerosis progression.
  • A rapid increase in CAVI is associated with arterial smooth muscle cell contraction.

Purpose of the Study:

  • To propose a novel hypothesis for plaque rupture.
  • To investigate the link between smooth muscle cell contraction and atheroma.
  • To explore the implications of rapid CAVI changes in cardiovascular disease.

Main Methods:

  • Utilized the established cardio-ankle vascular index (CAVI) as a measure of arterial stiffness.
  • Analyzed the relationship between CAVI changes and arterial smooth muscle cell behavior.
  • Considered the vascular architecture of atheroma, including vasa vasorum penetration.

Main Results:

  • A rapid rise in CAVI signifies arterial smooth muscle cell contraction.
  • This contraction, in the context of atheroma vasculature, can be interpreted as "choked" atheroma.
  • The findings support a "smooth muscle cell contraction" hypothesis for plaque rupture.

Conclusions:

  • Smooth muscle cell contraction, indicated by a rapid CAVI rise, is proposed as a mechanism for plaque rupture.
  • This hypothesis offers a new perspective on the pathophysiology of cardiovascular events.
  • Understanding CAVI dynamics may provide insights into managing arteriosclerosis and preventing plaque rupture.

Keywords:
CAVIarterial stiffnessatherosclerosissmooth muscle cell contraction

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