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Circadian clocks and vascular function

Georgios K Paschos1, Garret A FitzGerald

  • 1Department of Pharmacology, 153 Johnson Pavilion, 3620 Hamilton Walk, Philadelphia, PA 19104-6084. garret@upenn.edu.

Circulation Research
|March 20, 2010
PubMed

Insights

The body's internal clock, or circadian clock, influences cardiovascular health. Disrupting this clock in blood vessels affects vascular tone and blood clot formation, impacting heart health.

Area of Science:

  • Physiology
  • Cardiovascular Biology
  • Chronobiology

Background:

  • The circadian clock regulates numerous physiological processes, including cardiovascular function.
  • Vascular cells (endothelial, smooth muscle, fibroblasts) possess intrinsic circadian oscillators.
  • Vascular tone and thrombus formation exhibit daily rhythms, crucial for cardiovascular events.

Purpose of the Study:

  • To review how genetic disruption of circadian clock elements impacts vascular function.
  • To highlight the role of the circadian clock in maintaining cardiovascular homeostasis.

Main Methods:

  • This is a review article, synthesizing existing research.
  • Focuses on studies involving genetic manipulation of circadian clock components in the vasculature.

Main Results:

  • Genetic disruption of the circadian clock leads to significant alterations in vascular function.
  • Specific clock gene deficiencies result in abnormal vascular tone and altered thrombus formation.

Conclusions:

  • The circadian clock is essential for normal vascular physiology.
  • Disrupting the vascular circadian clock has detrimental effects on cardiovascular health, potentially increasing risks for adverse events.

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