Advancing understanding of human coronary artery disease requires new methods that can be used in patients for studying atherosclerotic plaque microstructure in relation to the molecular mechanisms that underlie its initiation, progression and clinical complications, including myocardial infarction and sudden cardiac death. Here we report a dual-modality intra-arterial catheter for simultaneous microstructural and molecular imaging in vivo using a combination of optical frequency domain imaging (OFDI) and near-infrared fluorescence (NIRF) imaging. By providing simultaneous molecular information in the context of the surrounding tissue microstructure, this new catheter could provide new opportunities for investigating coronary atherosclerosis and stent healing and for identifying high-risk biological and structural coronary arterial plaques in vivo.
Bibliographical noteFunding Information:
We thank J. Gardecki for preparation of the cadaver coronary artery and CVPath for pathology of the stented artery. We also thank A. Rosenthal and G. Mallas for their technical support and A. Mauskapf for preparing and assisting in animal procedures. We thank Y. Iwamoto, Y. Yagi and E. Salomatina for assistance in histopathology. This research was supported in part by the US National Institutes of Health (R01HL076398 and R01HL093717 to G.J.T. and R01HL108229-01A1 to F.A.J.), the Center for Integration of Medicine and Innovative Technology (DAMD17-02-2-0006 to G.J.T. and F.A.J.), an American Heart Association Scientist Development grant (#0830352N to F.A.J.), a Howard Hughes Medical Institute Early Career Award (F.A.J.) and the CardioVascular Research Foundation (CVRF, J.W.K.).
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)