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Guo B, Li Z, Tu P, Tang H, Tu Y. Molecular Imaging and Non-molecular Imaging of Atherosclerotic Plaque Thrombosis. Front Cardiovasc Med 2021; 8:692915. [PMID: 34291095 PMCID: PMC8286992 DOI: 10.3389/fcvm.2021.692915] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 06/08/2021] [Indexed: 12/11/2022] Open
Abstract
Thrombosis in the context of atherosclerosis typically results in life-threatening consequences, including acute coronary events and ischemic stroke. As such, early detection and treatment of thrombosis in atherosclerosis patients is essential. Clinical diagnosis of thrombosis in these patients is typically based upon a combination of imaging approaches. However, conventional imaging modalities primarily focus on assessing the anatomical structure and physiological function, severely constraining their ability to detect early thrombus formation or the processes underlying such pathology. Recently, however, novel molecular and non-molecular imaging strategies have been developed to assess thrombus composition and activity at the molecular and cellular levels more accurately. These approaches have been successfully used to markedly reduce rates of atherothrombotic events in patients suffering from acute coronary syndrome (ACS) by facilitating simultaneous diagnosis and personalized treatment of thrombosis. Moreover, these modalities allow monitoring of plaque condition for preventing plaque rupture and associated adverse cardiovascular events in such patients. Sustained developments in molecular and non-molecular imaging technologies have enabled the increasingly specific and sensitive diagnosis of atherothrombosis in animal studies and clinical settings, making these technologies invaluable to patients' health in the future. In the present review, we discuss current progress regarding the non-molecular and molecular imaging of thrombosis in different animal studies and atherosclerotic patients.
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Affiliation(s)
- Bingchen Guo
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Zhaoyue Li
- Department of Cardiology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Peiyang Tu
- College of Clinical Medicine, Hubei University of Science and Technology, Xianning, China
| | - Hao Tang
- Department of Cardiology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yingfeng Tu
- Department of Cardiology, The First Affiliated Hospital of Harbin Medical University, Harbin, China
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Bertrand MJ, Abran M, Maafi F, Busseuil D, Merlet N, Mihalache-Avram T, Geoffroy P, Tardif PL, Abulrob A, Arbabi-Ghahroudi M, Ni F, Sirois M, L'Allier PL, Rhéaume É, Lesage F, Tardif JC. In Vivo Near-Infrared Fluorescence Imaging of Atherosclerosis Using Local Delivery of Novel Targeted Molecular Probes. Sci Rep 2019; 9:2670. [PMID: 30804367 PMCID: PMC6389905 DOI: 10.1038/s41598-019-38970-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 01/08/2019] [Indexed: 01/04/2023] Open
Abstract
This study aimed to evaluate the feasibility and accuracy of a technique for atherosclerosis imaging using local delivery of relatively small quantities (0.04-0.4 mg/kg) of labeled-specific imaging tracers targeting ICAM-1 and unpolymerized type I collagen or negative controls in 13 rabbits with atheroma induced by balloon injury in the abdominal aorta and a 12-week high-cholesterol diet. Immediately after local infusion, in vivo intravascular ultrasonography (IVUS)-NIRF imaging was performed at different time-points over a 40-minute period. The in vivo peak NIRF signal was significantly higher in the molecular tracer-injected rabbits than in the control-injected animals (P < 0.05). Ex vivo peak NIRF signal was significantly higher in the ICAM-1 probe-injected rabbits than in controls (P = 0.04), but not in the collagen probe-injected group (P = 0.29). NIRF signal discrimination following dual-probe delivery was also shown to be feasible in a single animal and thus offers the possibility of combining several distinct biological imaging agents in future studies. This innovative imaging strategy using in vivo local delivery of low concentrations of labeled molecular tracers followed by IVUS-NIRF catheter-based imaging holds potential for detection of vulnerable human coronary artery plaques.
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Affiliation(s)
- Marie-Jeanne Bertrand
- Montreal Heart Institute, 5000 Belanger street, Montreal, Quebec, H1T 1C8, Canada
- Department of medicine, Université de Montréal, 2900 Édouard-Montpetit, Montreal, Quebec, H3T 1J4, Canada
| | - Maxime Abran
- Montreal Heart Institute, 5000 Belanger street, Montreal, Quebec, H1T 1C8, Canada
- Département de Génie Électrique et Institut de Génie Biomédical, École Polytechnique de Montréal, 2900 Édouard-Montpetit, Montreal, Quebec, H3T 1J4, Canada
| | - Foued Maafi
- Montreal Heart Institute, 5000 Belanger street, Montreal, Quebec, H1T 1C8, Canada
| | - David Busseuil
- Montreal Heart Institute, 5000 Belanger street, Montreal, Quebec, H1T 1C8, Canada
| | - Nolwenn Merlet
- Montreal Heart Institute, 5000 Belanger street, Montreal, Quebec, H1T 1C8, Canada
| | | | - Pascale Geoffroy
- Montreal Heart Institute, 5000 Belanger street, Montreal, Quebec, H1T 1C8, Canada
| | - Pier-Luc Tardif
- Montreal Heart Institute, 5000 Belanger street, Montreal, Quebec, H1T 1C8, Canada
- Département de Génie Électrique et Institut de Génie Biomédical, École Polytechnique de Montréal, 2900 Édouard-Montpetit, Montreal, Quebec, H3T 1J4, Canada
| | - Abedelnasser Abulrob
- Department of Translational Biosciences, Human Health Therapeutics Research Centre, National Research Council of Canada, 1200 chemin de Montréal, Ottawa, Ontario, K1A 0R6, Canada
| | - Mehdi Arbabi-Ghahroudi
- Department of Translational Biosciences, Human Health Therapeutics Research Centre, National Research Council of Canada, 1200 chemin de Montréal, Ottawa, Ontario, K1A 0R6, Canada
| | - Feng Ni
- Department of Downstream Processing and Analytics, Human Health Therapeutics Research Centre, National Research Council of Canada, 6100 Royalmount Avenue, Montreal, Quebec, H4P 2R2, Canada
| | - Martin Sirois
- Montreal Heart Institute, 5000 Belanger street, Montreal, Quebec, H1T 1C8, Canada
| | - Philippe L L'Allier
- Montreal Heart Institute, 5000 Belanger street, Montreal, Quebec, H1T 1C8, Canada
- Department of medicine, Université de Montréal, 2900 Édouard-Montpetit, Montreal, Quebec, H3T 1J4, Canada
| | - Éric Rhéaume
- Montreal Heart Institute, 5000 Belanger street, Montreal, Quebec, H1T 1C8, Canada
- Department of medicine, Université de Montréal, 2900 Édouard-Montpetit, Montreal, Quebec, H3T 1J4, Canada
| | - Frédéric Lesage
- Montreal Heart Institute, 5000 Belanger street, Montreal, Quebec, H1T 1C8, Canada
- Département de Génie Électrique et Institut de Génie Biomédical, École Polytechnique de Montréal, 2900 Édouard-Montpetit, Montreal, Quebec, H3T 1J4, Canada
| | - Jean-Claude Tardif
- Montreal Heart Institute, 5000 Belanger street, Montreal, Quebec, H1T 1C8, Canada.
- Department of medicine, Université de Montréal, 2900 Édouard-Montpetit, Montreal, Quebec, H3T 1J4, Canada.
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Lefebvre J, Delafontaine-Martel P, Pouliot P, Girouard H, Descoteaux M, Lesage F. Fully automated dual-resolution serial optical coherence tomography aimed at diffusion MRI validation in whole mouse brains. NEUROPHOTONICS 2018; 5:045004. [PMID: 30681668 PMCID: PMC6215086 DOI: 10.1117/1.nph.5.4.045004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Accepted: 10/12/2018] [Indexed: 06/09/2023]
Abstract
An automated dual-resolution serial optical coherence tomography (2R-SOCT) scanner is developed. The serial histology system combines a low-resolution ( 25 μ m / voxel ) 3 × OCT with a high-resolution ( 1.5 μ m / voxel ) 40 × OCT to acquire whole mouse brains at low resolution and to target specific regions of interest (ROIs) at high resolution. The 40 × ROIs positions are selected either manually by the microscope operator or using an automated ROI positioning selection algorithm. Additionally, a multimodal and multiresolution registration pipeline is developed in order to align the 2R-SOCT data onto diffusion MRI (dMRI) data acquired in the same ex vivo mouse brains prior to automated histology. Using this imaging system, 3 whole mouse brains are imaged, and 250 high-resolution 40 × three-dimensional ROIs are acquired. The capability of this system to perform multimodal imaging studies is demonstrated by labeling the ROIs using a mouse brain atlas and by categorizing the ROIs based on their associated dMRI measures. This reveals a good correspondence of the tissue microstructure imaged by the high-resolution OCT with various dMRI measures such as fractional anisotropy, number of fiber orientations, apparent fiber density, orientation dispersion, and intracellular volume fraction.
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Affiliation(s)
- Joël Lefebvre
- École Polytechnique de Montréal, Laboratoire d’imagerie optique et moléculaire, Montreal, Canada
| | | | - Philippe Pouliot
- École Polytechnique de Montréal, Laboratoire d’imagerie optique et moléculaire, Montreal, Canada
- Université de Montréal, Research Centre, Montréal Heart Institute, Montreal, Canada
| | - Hélène Girouard
- Université de Montréal, Institut universitaire de gériatrie de Montréal, Montreal, Canada
| | - Maxime Descoteaux
- Université de Sherbrooke, Sherbrooke Connectivity Imaging Laboratory, Sherbrooke, Canada
| | - Frédéric Lesage
- École Polytechnique de Montréal, Laboratoire d’imagerie optique et moléculaire, Montreal, Canada
- Université de Montréal, Research Centre, Montréal Heart Institute, Montreal, Canada
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Castonguay A, Lefebvre J, Pouliot P, Avti P, Moeini M, Lesage F. Serial optical coherence scanning reveals an association between cardiac function and the heart architecture in the aging rodent heart. BIOMEDICAL OPTICS EXPRESS 2017; 8:5027-5038. [PMID: 29188099 PMCID: PMC5695949 DOI: 10.1364/boe.8.005027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 10/11/2017] [Accepted: 10/12/2017] [Indexed: 05/10/2023]
Abstract
Normal aging is accompanied by structural changes in the heart architecture. To explore this remodeling, we used a serial optical coherence tomography scanner to image entire mouse hearts at micron scale resolution. Ex vivo hearts of 7 young (4 months) and 5 old (24 months) C57BL/6 mice were acquired with the imaging platform. OCT of the myocardium revealed myofiber orientation changing linearly from the endocardium to the epicardium. In old mice, this rate of change was lower when compared to young mice while the average volume of old mice hearts was significantly larger (p<0.05). Myocardial wall thickening was also accompanied by extracellular spacing in the endocardium, resulting in a lower OCT attenuation coefficient in old mice endocardium (p<0.05). Prior to serial sectioning, cardiac function of the same hearts was imaged in vivo using MRI and revealed a reduced ejection fraction with aging. The use of a serial optical coherence tomography scanner allows new insight into fine age-related changes of the heart associated with changes in heart function.
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Affiliation(s)
- Alexandre Castonguay
- École Polytechnique de Montréal, C.P. 6079, Succ. Centre-Ville, Montréal QC, H3C3A7, Canada
| | - Joël Lefebvre
- École Polytechnique de Montréal, C.P. 6079, Succ. Centre-Ville, Montréal QC, H3C3A7, Canada
| | - Philippe Pouliot
- École Polytechnique de Montréal, C.P. 6079, Succ. Centre-Ville, Montréal QC, H3C3A7, Canada
- Institut de Cardiologie de Montréal, 5000 rue Bélanger Est, Montréal, QC, H1T1C8, Canada
| | - Pramod Avti
- Department of Biophysics, Postgraduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Mohammad Moeini
- École Polytechnique de Montréal, C.P. 6079, Succ. Centre-Ville, Montréal QC, H3C3A7, Canada
- Institut de Cardiologie de Montréal, 5000 rue Bélanger Est, Montréal, QC, H1T1C8, Canada
| | - Frédéric Lesage
- École Polytechnique de Montréal, C.P. 6079, Succ. Centre-Ville, Montréal QC, H3C3A7, Canada
- Institut de Cardiologie de Montréal, 5000 rue Bélanger Est, Montréal, QC, H1T1C8, Canada
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Lefebvre J, Castonguay A, Pouliot P, Descoteaux M, Lesage F. Whole mouse brain imaging using optical coherence tomography: reconstruction, normalization, segmentation, and comparison with diffusion MRI. NEUROPHOTONICS 2017; 4:041501. [PMID: 28721357 PMCID: PMC5506292 DOI: 10.1117/1.nph.4.4.041501] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Accepted: 06/19/2017] [Indexed: 05/10/2023]
Abstract
An automated massive histology setup combined with an optical coherence tomography (OCT) microscope was used to image a total of [Formula: see text] whole mouse brains. Each acquisition generated a dataset of thousands of OCT volumetric tiles at a sampling resolution of [Formula: see text]. This paper describes techniques for reconstruction and segmentation of the sliced brains. In addition to the measured OCT optical reflectivity, a single scattering photon model was used to compute the attenuation coefficients within each tissue slice. Average mouse brain templates were generated for both the OCT reflectivity and attenuation contrasts and were used with an [Formula: see text]-tissue segmentation algorithm. To better understand the brain tissue OCT contrast origin, one of the mouse brains was acquired using dMRI and coregistered to its corresponding assembled brain. Our results indicate that the optical reflectivity in a fiber bundle varies with its orientation, its fiber density, and the number of fiber orientations it contains. The OCT mouse brain template generation and coregistration to dMRI data demonstrate the potential of this massive histology technique to pursue cross-sectional, multimodal, and multisubject investigations of small animal brains.
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Affiliation(s)
- Joël Lefebvre
- École Polytechnique de Montréal, Montréal, Québec, Canada
- Address all correspondence to: Joël Lefebvre, E-mail:
| | | | - Philippe Pouliot
- École Polytechnique de Montréal, Montréal, Québec, Canada
- Institut de Cardiologie de Montréal, Montréal, Québec, Canada
| | - Maxime Descoteaux
- Université de Sherbrooke, Sherbrooke Connectivity Imaging Laboratory, Sherbrooke, Québec, Canada
| | - Frédéric Lesage
- École Polytechnique de Montréal, Montréal, Québec, Canada
- Institut de Cardiologie de Montréal, Montréal, Québec, Canada
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