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Related Experiment Video

Updated: May 19, 2026

Calcification of Vascular Smooth Muscle Cells and Imaging of Aortic Calcification and Inflammation
08:43

Calcification of Vascular Smooth Muscle Cells and Imaging of Aortic Calcification and Inflammation

Published on: May 31, 2016

Does iron inhibit calcification during atherosclerosis?

Reshmi Rajendran1, Ren Minqin, John A Ronald

  • 1Centre for Ion Beam Applications, Department of Physics, National University of Singapore, Singapore.

Free Radical Biology & Medicine
|September 4, 2012
PubMed
Summary
This summary is machine-generated.

Iron and calcium show an inverse correlation in atherosclerotic lesions. This suggests iron may worsen lesion development while inhibiting calcification, or calcification might defend against atherosclerosis by limiting iron.

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Published on: May 10, 2021

Area of Science:

  • Cardiovascular Research
  • Trace Element Analysis
  • Atherosclerosis Pathophysiology

Background:

  • Oxidative stress is linked to atherosclerosis and plaque calcification.
  • Transition metals like iron can exacerbate oxidative stress.
  • Understanding iron-calcium interactions in atherosclerotic lesions is crucial.

Purpose of the Study:

  • To investigate the spatial relationship between iron and calcium in atherosclerotic lesions.
  • To quantify elemental distribution without tissue contamination or redistribution.
  • To elucidate the roles of iron and calcium in atherosclerosis progression and calcification.

Main Methods:

  • Combined ion-beam techniques: scanning transmission ion microscopy, Rutherford backscattering spectrometry, and particle-induced X-ray emission.
  • Utilized a high-energy (MeV) proton microprobe for simultaneous elemental mapping and quantification.
  • Analyzed elemental distribution directly in atherosclerotic rabbit arteries.

Main Results:

  • Demonstrated a highly significant spatial inverse correlation between iron and calcium in atherosclerotic lesions.
  • Observed distinct spatial patterns for iron and calcium distribution within the lesions.

Conclusions:

  • Iron may accelerate atherosclerotic lesion development while suppressing calcification.
  • Calcification could potentially act as a protective mechanism against atherosclerosis by excluding iron.
  • Ion-beam analysis provides a sensitive, quantitative method for studying elemental roles in cardiovascular disease.