Noninvasive in vivo imaging of monocyte trafficking to atherosclerotic lesions

Article

关键词: POSITRON-EMISSION-TOMOGRAPHY;    ACUTE CORONARY SYNDROMES;    C-REACTIVE PROTEIN;    CIRCULATING MONOCYTES;    MICE;    INFLAMMATION;    ATORVASTATIN;    RECRUITMENT;    MACROPHAGES;    ATHEROGENESIS;   

DOI  :  10.1161/CIRCULATIONAHA.107.719765

来源: SCIE

【 摘 要 】

Background-Monocytes play a key role in atherogenesis, but their participation has been discerned largely via ex vivo analyses of atherosclerotic lesions. We sought to establish a noninvasive technique to determine monocyte trafficking to atherosclerotic lesions in live animals. Methods and Results-Using a micro-single-photon emission computed tomography small-animal imaging system and a Food and Drug Administration-approved radiotracer ([ indium 111] oxyquinoline, In-111-oxine), we demonstrate here that monocyte recruitment to atherosclerotic lesions can be visualized in a noninvasive, dynamic, and 3-dimensional fashion in live animals. We show in vivo that monocytes are recruited avidly to plaques within days of adoptive transfer. Using micro-single-photon emission computed tomography imaging as a screening tool, we were able to investigate modulatory effects on monocyte recruitment in live animals. We found that 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitors rapidly and substantially reduce monocyte recruitment to existing atherosclerotic lesions, as imaged here in vivo. Conclusions-This novel approach to track monocytes to atherosclerotic plaques in vivo should have broad applications and create new insights into the pathogenesis of atherosclerosis and other inflammatory diseases.

【 授权许可】

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