Near-infrared autofluorescence induced by intraplaque hemorrhage and heme degradation as marker for high-risk atherosclerotic plaques

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Abstract

Atherosclerosis is a major cause of mortality and morbidity, which is mainly driven by complications such as myocardial infarction and stroke. These complications are caused by thrombotic arterial occlusion localized at the site of high-risk atherosclerotic plaques, of which early detection and therapeutic stabilization are urgently needed. Here we show that near-infrared autofluorescence is associated with the presence of intraplaque hemorrhage and heme degradation products, particularly bilirubin by using our recently created mouse model, which uniquely reflects plaque instability as seen in humans, and human carotid endarterectomy samples. Fluorescence emission computed tomography detecting near-infrared autofluorescence allows in vivo monitoring of intraplaque hemorrhage, establishing a preclinical technology to assess and monitor plaque instability and thereby test potential plaque-stabilizing drugs. We suggest that near-infrared autofluorescence imaging is a novel technology that allows identification of atherosclerotic plaques with intraplaque hemorrhage and ultimately holds promise for detection of high-risk plaques in patients.

Item Type: Journal Article
Subjects: R Medicine > RC Internal medicine
Divisions: Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group)
SWORD Depositor: Library Publications Router
Library of Congress Subject Headings (LCSH): Atherosclerosis -- Risk factors, Atherosclerotic plaque -- Imaging, Tomography, Emission, Fluorescence spectroscopy
Journal or Publication Title: Nature Communications
Publisher: Nature Publishing Group
ISSN: 2041-1723
Official Date: 13 July 2017
Dates:
Date
Event
13 July 2017
Published
2 June 2017
Accepted
Volume: 8
Number: 1
Number of Pages: 16
Article Number: 75
DOI: 10.1038/s41467-017-00138-x
Status: Peer Reviewed
Publication Status: Published
Re-use Statement: ** From PubMed via Jisc Publications Router. ** History: ** received: 28-03-2016 ** accepted: 02-06-2017
Access rights to Published version: Open Access (Creative Commons open licence)
Date of first compliant deposit: 3 August 2017
Date of first compliant Open Access: 3 August 2017
Funder: National Health and Medical Research Council (Australia) (NHMRC)
Grant number: 1003234, 1056569, 1080604
RIOXX Funder/Project Grant:
Project/Grant ID
RIOXX Funder Name
Funder ID
1003234
National Health and Medical Research Council
1056569
National Health and Medical Research Council
1080604
National Health and Medical Research Council
URI: https://wrap.warwick.ac.uk/90431/

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