Characterisation of an atherosclerotic micro-calcification model using ApoE−/− mice and PET/CT

MacAskill, Mark G. and McDougald, Wendy and Alcaide-Corral, Carlos and Newby, David E. and Tavares, Adriana A.S. and Hadoke, Patrick W.F. and Wu, Junxi (2020) Characterisation of an atherosclerotic micro-calcification model using ApoE−/− mice and PET/CT. IJC Heart and Vasculature, 31. 100672. ISSN 2352-9067 (https://doi.org/10.1016/j.ijcha.2020.100672)

[thumbnail of MacAskill-etal-IJC-HV-2020-Characterisation-of-an-atherosclerotic-micro-calcification-model]
Preview
 Text. Filename: MacAskill_etal_IJC_HV_2020_Characterisation_of_an_atherosclerotic_micro_calcification_model.pdf
Final Published Version
License: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 logo
Download (706kB)| Preview

Abstract

Intraplaque calcification is a prominent feature of advanced atherosclerotic plaque development. Current clinical evidence suggests that the size of calcium deposit may confer different effects on plaque stability [1], [2], [3]. Macro-calcified deposits (CT detected) are thought to confer plaque stability whereas micro-calcification ([18F]NaF PET detected) are thought to be a feature of high-risk ‘vulnerable’ plaques which are prone to rupture. Following on from the emerging role of micro-calcification in high risk plaques within the clinic [4], there is now an urgent need for preclinical atherosclerotic models with this feature to gain mechanistic insights and assess the impact of calcification-targeted therapies. Using a combination of invasive and ex vivo methods, ApoE−/− mice placed on an atherogenic diet have been shown to develop intraplaque calcification [5]. Additionally, [18F]NaF PET/CT has been used to assess the impact of exercise on calcification in ApoE−/− mice on a western diet [6]. In this study, we set out to determine if [18F]NaF PET/CT could be used to non-invasively detect and quantify micro-calficiation in the ApoE−/− high cholesterol diet (HCD) mouse model, and examine the temporal nature of this process.

ORCID iDs

MacAskill, Mark G., McDougald, Wendy, Alcaide-Corral, Carlos, Newby, David E., Tavares, Adriana A.S., Hadoke, Patrick W.F. and Wu, Junxi ORCID logoORCID: https://orcid.org/0000-0002-1334-887X;
CORE (COnnecting REpositories)