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Parathyroid hormone and arterial dysfunction in the multi-ethnic study of atherosclerosis

Cortney Bosworth1, Michael C Sachs, Daniel Duprez

  • 1Division of Nephrology and Kidney Research Institute, Department of Medicine, University of Washington, Seattle, WA, USA.

Clinical Endocrinology
|February 14, 2013
PubMed

Insights

High parathyroid hormone (PTH) levels are linked to poorer arterial function, including reduced endothelial function and increased aortic pulse pressure. These findings in a large population may explain PTH

Area of Science:

  • Cardiovascular Science
  • Endocrinology
  • Vascular Biology

Background:

  • Elevated parathyroid hormone (PTH) concentrations are associated with cardiovascular risks like hypertension and mortality.
  • Impaired arterial function is a potential mechanism linking high PTH to cardiovascular disease.
  • Understanding the relationship between PTH and vascular health is crucial for cardiovascular risk assessment.

Purpose of the Study:

  • To investigate the association between serum parathyroid hormone (PTH) concentration and measures of arterial function.
  • To determine if PTH levels correlate with endothelial function and arterial stiffness parameters.

Main Methods:

  • Cross-sectional study involving 6545 participants from the Multi-Ethnic Study of Atherosclerosis.
  • Assessment of brachial artery flow-mediated dilation (FMD) and aortic pulse pressure.
  • Analysis of arterial pulse parameters using Windkessel modeling of radial pressure waveforms.

Main Results:

  • Higher serum PTH concentrations were significantly associated with lower brachial artery FMD (impaired endothelial function).
  • Increased PTH levels correlated with higher aortic pulse pressure and reduced large artery elasticity (capacitive index C1).
  • These associations remained significant after adjusting for calcium, vitamin D, and estimated glomerular filtration rate.

Conclusions:

  • Elevated serum PTH is associated with impaired endothelial function and increased arterial stiffness in a diverse population.
  • The findings suggest that vascular dysfunction may mediate the link between high PTH and cardiovascular disease.
  • These results highlight the potential role of PTH in vascular health and cardiovascular risk.
Abstract

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