Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.freeradbiomed.2012.07.014
Title: Does iron inhibit calcification during atherosclerosis?
Authors: Rajendran, R. 
Minqin, R. 
Ronald, J.A.
Rutt, B.K.
Halliwell, B.
Watt, F. 
Keywords: Atherosclerosis
Calcium
Free radicals
Iron
PIXE
RBS
STIM
Issue Date: 1-Oct-2012
Citation: Rajendran, R., Minqin, R., Ronald, J.A., Rutt, B.K., Halliwell, B., Watt, F. (2012-10-01). Does iron inhibit calcification during atherosclerosis?. Free Radical Biology and Medicine 53 (9) : 1675-1679. ScholarBank@NUS Repository. https://doi.org/10.1016/j.freeradbiomed.2012.07.014
Abstract: Oxidative stress has been implicated in the etiology of atherosclerosis and even held responsible for plaque calcification. Transition metals such as iron aggravate oxidative stress. To understand the relation between calcium and iron in atherosclerotic lesions, a sensitive technique is required that is quantitatively accurate and avoids isolation of plaques or staining/fixing tissue, because these processes introduce contaminants and redistribute elements within the tissue. In this study, the three ion-beam techniques of scanning transmission ion microscopy, Rutherford backscattering spectrometry, and particle-induced X-ray emission have been combined in conjunction with a high-energy (MeV) proton microprobe to map the spatial distribution of the elements and quantify them simultaneously in atherosclerotic rabbit arteries. The results show that iron and calcium within the atherosclerotic lesions exhibit a highly significant spatial inverse correlation. It may be that iron accelerates the progression of atherosclerotic lesion development, but suppresses calcification. Alternatively, calcification could be a defense mechanism against atherosclerotic progression by excluding iron. © 2012 Elsevier Inc. All rights reserved.
Source Title: Free Radical Biology and Medicine
URI: http://scholarbank.nus.edu.sg/handle/10635/96260
ISSN: 08915849
DOI: 10.1016/j.freeradbiomed.2012.07.014
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