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Chen D, Liu P, Liu Y, Wang Z, Zhou Y, Jiang L, Yuan C, Li Y, Lin W, Huang M. A Clot-Homing Near-Infrared Probe for In Vivo Imaging of Murine Thromboembolic Models. Adv Healthc Mater 2022; 11:e2102213. [PMID: 34994110 DOI: 10.1002/adhm.202102213] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 12/16/2021] [Indexed: 11/09/2022]
Abstract
Direct thrombus imaging contributes to early detection of thrombosis, and animal models with clinical relevance are vital in the development of new thrombolytics. Here, a facile clot-homing strategy is developed based on the finding that blood clot is negatively charged. Positively charged pentalysine moiety is coupled with phthalocyanine-based fluorophore , and its applications in murine thromboembolic models are described. The probe efficiently stains the cryosection of intracranial thrombi retrieved from patients with cardioembolic stroke. In vitro, the fibrin-rich clot is labeled by the probe at sub-nanomolar concentration. The probe-labeled clot is formed into microparticles (1-5 µm) and intravenously injected into mice for pulmonary embolism modeling. In vivo imaging demonstrates fast accumulation and retention of fluorescent clot microparticles in pulmonary vessels. Recombinant tissue-type plasminogen activator (rtPA) administration greatly reduces near-infrared signal in the lungs in a time-dependent manner. This probe is also tested in a stroke model. Middle cerebral artery is occluded by autologous thrombi formed under electric stimulation. In vivo imaging shows that the probe efficiently homes to thrombus at early stage. Hence, this probe has great potential in real-time imaging of thromboembolism in clinically relevant models, promoting bench-to-bedside translation. This clot-homing principle can be used in other applications.
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Affiliation(s)
- Dan Chen
- College of Chemistry Fuzhou University No. 2 Wulongjiang North Avenue Fuzhou 350108 P. R. China
| | - Peiwen Liu
- College of Chemistry Fuzhou University No. 2 Wulongjiang North Avenue Fuzhou 350108 P. R. China
| | - Yurong Liu
- College of Chemistry Fuzhou University No. 2 Wulongjiang North Avenue Fuzhou 350108 P. R. China
| | - Zhiyou Wang
- College of Chemistry Fuzhou University No. 2 Wulongjiang North Avenue Fuzhou 350108 P. R. China
| | - Yang Zhou
- College of Chemistry Fuzhou University No. 2 Wulongjiang North Avenue Fuzhou 350108 P. R. China
| | - Longguang Jiang
- College of Chemistry Fuzhou University No. 2 Wulongjiang North Avenue Fuzhou 350108 P. R. China
| | - Cai Yuan
- College of Chemistry Fuzhou University No. 2 Wulongjiang North Avenue Fuzhou 350108 P. R. China
| | - Yongkun Li
- Department of Neurology Fujian Provincial Hospital, Shengli Clinical College of Fujian Medical University No. 134 Dong Street Fuzhou Fujian 350001 P. R. China
| | - Wei Lin
- Fujian Institute of integrated traditional Chinese and Western Medicine Fujian University of Traditionial Chinese Medicine No. 1 Qiuyang Road, Minhou District Fuzhou 350122 P. R. China
| | - Mingdong Huang
- College of Chemistry Fuzhou University No. 2 Wulongjiang North Avenue Fuzhou 350108 P. R. China
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Königstein K, Büschges JC, Sarganas G, Krug S, Neuhauser H, Schmidt-Trucksäss A. Exercise and Carotid Properties in the Young-The KiGGS-2 Study. Front Cardiovasc Med 2022; 8:767025. [PMID: 35071349 PMCID: PMC8766972 DOI: 10.3389/fcvm.2021.767025] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 10/29/2021] [Indexed: 11/13/2022] Open
Abstract
Background: Carotid intima-media thickness (cIMT) and stiffness (cS) are predictive markers of early vascular aging and atherosclerotic risk. This study assessed, whether exercise has protective effects on carotid structure and function or on vascular risk in the young. Methods: Volume and change of exercise (recreational and organized sports participation) of German adolescents and young adults was assessed within the prospective population-study KiGGS at KiGGS-Wave-1 (2009-2012) and KiGGS-Wave-2 (2014-2017) using standardized self-reporting questionnaires. CIMT and cS were measured by real-time B-mode ultrasound sequences with semi-automated edge-detection and automatic electrocardiogram-gated quality control in 2,893 participants (14-28 years, 49.6% female). A cumulative index for atherosclerotic risk (CV-R) included z-scores of mean arterial pressure, triglycerides, total/HDL-cholesterol-ratio, body mass index, and HbA1c. Results: At KiGGS-Wave-2 cross-sectional CV-R but not cS and cIMT was lower in all exercise-groups compared to "no exercise" (B = -0.73, 95%-CI = -1.26 to 0.19, p = 0.008). Longitudinal volume of exercise was negatively associated with CV-R (B = -0.37, 95%-CI = -0.74 to 0.00, p = 0.048) but not with cS and cIMT. Cross-sectional relative risk of elevated CV-R but not cS and cIMT was lower in all exercise-groups compared to "no exercise" (RR = 0.80, 95%-CI = 0.66 to 0.98, p = 0.033). High exercise volumes were associated with lower relative risk of elevated CV-R (RR = 0.80, 95%-CI = 0.65-0.97, p = 0.021) and cS in tendency but not with cIMT. Conclusions: Increased levels of exercise are associated with a better cardiovascular risk profile in young individuals, but not with cS and cIMT. Our study confirms previous recommendations on exercise in this age group without demonstrating a clear benefit on surrogate markers of vascular health.
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Affiliation(s)
- Karsten Königstein
- Department of Epidemiology and Health Monitoring, Robert Koch Institute, Berlin, Germany
- Division Sports and Exercise Medicine, Department of Sport, Exercise and Health, University of Basel, Basel, Switzerland
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
| | - Julia Charlotte Büschges
- Department of Epidemiology and Health Monitoring, Robert Koch Institute, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
| | - Giselle Sarganas
- Department of Epidemiology and Health Monitoring, Robert Koch Institute, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
| | - Susanne Krug
- Department of Epidemiology and Health Monitoring, Robert Koch Institute, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
| | - Hannelore Neuhauser
- Department of Epidemiology and Health Monitoring, Robert Koch Institute, Berlin, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany
| | - Arno Schmidt-Trucksäss
- Division Sports and Exercise Medicine, Department of Sport, Exercise and Health, University of Basel, Basel, Switzerland
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Prigent K, Vigne J. Advances in Radiopharmaceutical Sciences for Vascular Inflammation Imaging: Focus on Clinical Applications. Molecules 2021; 26:molecules26237111. [PMID: 34885690 PMCID: PMC8659223 DOI: 10.3390/molecules26237111] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 11/09/2021] [Accepted: 11/19/2021] [Indexed: 01/18/2023] Open
Abstract
Biomedical imaging technologies offer identification of several anatomic and molecular features of disease pathogenesis. Molecular imaging techniques to assess cellular processes in vivo have been useful in advancing our understanding of several vascular inflammatory diseases. For the non-invasive molecular imaging of vascular inflammation, nuclear medicine constitutes one of the best imaging modalities, thanks to its high sensitivity for the detection of probes in tissues. 2-[18F]fluoro-2-deoxy-d-glucose ([18F]FDG) is currently the most widely used radiopharmaceutical for molecular imaging of vascular inflammatory diseases such as atherosclerosis and large-vessel vasculitis. The combination of [18F]FDG and positron emission tomography (PET) imaging has become a powerful tool to identify and monitor non-invasively inflammatory activities over time but suffers from several limitations including a lack of specificity and avid background in different localizations. The use of novel radiotracers may help to better understand the underlying pathophysiological processes and overcome some limitations of [18F]FDG PET for the imaging of vascular inflammation. This review examines how [18F]FDG PET has given us deeper insight into the role of inflammation in different vascular pathologies progression and discusses perspectives for alternative radiopharmaceuticals that could provide a more specific and simple identification of pathologies where vascular inflammation is implicated. Use of these novel PET tracers could lead to a better understanding of underlying disease mechanisms and help inform the identification and stratification of patients for newly emerging immune-modulatory therapies. Future research is needed to realize the true clinical translational value of PET imaging in vascular inflammatory diseases.
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Affiliation(s)
- Kevin Prigent
- CHU de Caen Normandie, Department of Nuclear Medicine, Normandie Université, UNICAEN, 14000 Caen, France;
| | - Jonathan Vigne
- CHU de Caen Normandie, Department of Nuclear Medicine, Normandie Université, UNICAEN, 14000 Caen, France;
- CHU de Caen Normandie, Department of Pharmacy, Normandie Université, UNICAEN, 14000 Caen, France
- UNICAEN, INSERM U1237, Etablissement Français du Sang, Physiopathology and Imaging of Neurological Disorders (PhIND), Cyceron, Institut Blood and Brain @ Caen-Normandie (BB@C), Normandie University, 14000 Caen, France
- Correspondence:
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Gao B, Xu J, Zhou J, Zhang H, Yang R, Wang H, Huang J, Yan F, Luo Y. Multifunctional pathology-mapping theranostic nanoplatforms for US/MR imaging and ultrasound therapy of atherosclerosis. NANOSCALE 2021; 13:8623-8638. [PMID: 33929480 DOI: 10.1039/d1nr01096d] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Atherosclerotic thrombosis is the leading cause of most life-threatening cardiovascular diseases (CVDs), particularly as a result of rupture or erosion of vulnerable plaques. Rupture or erosion-prone plaques are quite different in cellular composition and immunopathology, requiring different treatment strategies. The current imaging technology cannot distinguish the types of vulnerable plaques, and thus empirical treatment is still applied to all without a tailored and precise treatment. Herein, we propose a novel strategy called "Multifunctional Pathology-mapping Theranostic Nanoplatform (MPmTN)" for the tailored treatment of plaques based on the pathological classification. MPmTNs are made up of poly(lactic-co-glycolic acid) (PLGA) nanoparticles (NPs), containing contrast imaging materials Fe3O4 and perfluoropentane (PFP), and coated with specific plaque-targeted peptides PP1 and cyclic RGD. The PFP encapsulated inside the MPmTN can undergo a phase change from nanodroplets to gas microbubbles under therapeutic ultrasound (TUS) exposure. The acoustic and biological effects induced by TUS and disruption of microbubbles may further promote therapeutic effects. Hypothetically, MPmTN NPs can target the rupture-prone plaque via the binding of PP1 to class A scavenger receptors (SR-A) on macrophages, induce the apoptosis due to TUS exposure and thus reduce the chronic soakage of inflammatory cells. The MPmTN NPs can also target the erosion-prone plaque through the binding of cRGD to glycoprotein (GP) IIb/IIIa on activated platelets and promote platelet disaggregation under TUS exposure. Therefore, MPmTNs may work as a multifunctional pathology-mapping therapeutic agent. Our in vitro results show that the MPmTN with PP1 and cRGD peptides had a high binding affinity both for activated macrophages and blood clots. Under TUS exposure, the MPmTN could effectively induce macrophage apoptosis, destroy thrombus and exhibit good imaging properties for ultrasound (US) and MRI. In apoE-/- mice, MPmTNs can selectively accumulate at the plaque site and reduce the T2-weighted signal. The apoptosis of macrophages and disaggregation of activated platelets on the plaques were also confirmed in vivo. In summary, this study provides a potential strategy for a tailored treatment of vulnerable plaques based on their pathological nature and a multimodal imaging tool for the risk stratification and assessment of therapeutic efficacy.
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Affiliation(s)
- Binyang Gao
- Department of Ultrasound, Laboratory of Ultrasound Imaging and Drug, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China.
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5
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Weisel JW, Litvinov RI. Visualizing thrombosis to improve thrombus resolution. Res Pract Thromb Haemost 2021; 5:38-50. [PMID: 33537528 PMCID: PMC7845077 DOI: 10.1002/rth2.12469] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 11/05/2020] [Accepted: 11/15/2020] [Indexed: 12/12/2022] Open
Abstract
The severity, course, and outcomes of thrombosis are determined mainly by the size and location of the thrombus, but studying thrombus structure and composition has been an important but challenging task. The substantial progress in determination of thrombus morphology has become possible due to new intravital imaging methodologies in combination with mechanical thrombectomy, which allows extraction of a fresh thrombus from a patient followed by microscopy. Thrombi have been found to contain various structural forms of fibrin along with platelet aggregates, leukocytes, and red blood cells, many of which acquire a polyhedral shape (polyhedrocytes) as a result of intravital platelet-driven contraction. The relative volume fractions of thrombus components and their structural forms vary substantially, depending on the clinical and pathogenic characteristics. This review summarizes recent research that describes quantitative and qualitative morphologic characteristics of arterial and venous thrombi that are relevant for the pathogenesis, prophylaxis, diagnosis, and treatment of thrombosis.
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Affiliation(s)
- John W. Weisel
- Department of Cell and Developmental BiologyUniversity of Pennsylvania Perelman School of MedicinePhiladelphiaPAUSA
| | - Rustem I. Litvinov
- Department of Cell and Developmental BiologyUniversity of Pennsylvania Perelman School of MedicinePhiladelphiaPAUSA
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6
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VCAM-1 Target in Non-Invasive Imaging for the Detection of Atherosclerotic Plaques. BIOLOGY 2020; 9:biology9110368. [PMID: 33138124 PMCID: PMC7692297 DOI: 10.3390/biology9110368] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 10/16/2020] [Accepted: 10/23/2020] [Indexed: 02/07/2023]
Abstract
Simple Summary Cardiovascular diseases are the first cause of morbimortality worldwide. They are mainly caused by atherosclerosis, with progressive plaque formation in the arterial wall. In this context, several imaging techniques have been developed to screen, detect and quantify atherosclerosis. Early screening improves primary prevention and promotes the prescription of adequate medication before adverse clinical events. In this review, we focus on the imaging of vascular cell adhesion molecule-1, an adhesion molecule involved in the first stages of the development of atherosclerosis. This molecule could therefore be a promising target to detect early atherosclerosis non-invasively. Potential clinical applications are critically discussed. Abstract Atherosclerosis is a progressive chronic arterial disease characterised by atheromatous plaque formation in the intima of the arterial wall. Several invasive and non-invasive imaging techniques have been developed to detect and characterise atherosclerosis in the vessel wall: anatomic/structural imaging, functional imaging and molecular imaging. In molecular imaging, vascular cell adhesion molecule-1 (VCAM-1) is a promising target for the non-invasive detection of atherosclerosis and for the assessment of novel antiatherogenic treatments. VCAM-1 is an adhesion molecule expressed on the activated endothelial surface that binds leucocyte ligands and therefore promotes leucocyte adhesion and transendothelial migration. Hence, for several years, there has been an increase in molecular imaging methods for detecting VCAM-1 in MRI, PET, SPECT, optical imaging and ultrasound. The use of microparticles of iron oxide (MPIO), ultrasmall superparamagnetic iron oxide (USPIO), microbubbles, echogenic immunoliposomes, peptides, nanobodies and other nanoparticles has been described. However, these approaches have been tested in animal models, and the remaining challenge is bench-to-bedside development and clinical applicability.
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7
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Li B, Aid-Launais R, Labour MN, Zenych A, Juenet M, Choqueux C, Ollivier V, Couture O, Letourneur D, Chauvierre C. Functionalized polymer microbubbles as new molecular ultrasound contrast agent to target P-selectin in thrombus. Biomaterials 2019; 194:139-150. [DOI: 10.1016/j.biomaterials.2018.12.023] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 11/28/2018] [Accepted: 12/20/2018] [Indexed: 12/30/2022]
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8
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Willson C, Watanabe M, Tsuji-Hosokawa A, Makino A. Pulmonary vascular dysfunction in metabolic syndrome. J Physiol 2018; 597:1121-1141. [PMID: 30125956 DOI: 10.1113/jp275856] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 07/30/2018] [Indexed: 12/20/2022] Open
Abstract
Metabolic syndrome is a critically important precursor to the onset of many diseases, such as cardiovascular disease, and cardiovascular disease is the leading cause of death worldwide. The primary risk factors of metabolic syndrome include hyperglycaemia, abdominal obesity, dyslipidaemia, and high blood pressure. It has been well documented that metabolic syndrome alters vascular endothelial and smooth muscle cell functions in the heart, brain, kidney and peripheral vessels. However, there is less information available regarding how metabolic syndrome can affect pulmonary vascular function and ultimately increase an individual's risk of developing various pulmonary vascular diseases, such as pulmonary hypertension. Here, we review in detail how metabolic syndrome affects pulmonary vascular function.
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Affiliation(s)
- Conor Willson
- Department of Physiology, University of Arizona, Tucson, AZ, USA
| | - Makiko Watanabe
- Department of Physiology, University of Arizona, Tucson, AZ, USA
| | | | - Ayako Makino
- Department of Physiology, University of Arizona, Tucson, AZ, USA
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9
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Aanei IL, Huynh T, Seo Y, Francis MB. Vascular Cell Adhesion Molecule-Targeted MS2 Viral Capsids for the Detection of Early-Stage Atherosclerotic Plaques. Bioconjug Chem 2018; 29:2526-2530. [DOI: 10.1021/acs.bioconjchem.8b00453] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Ioana L. Aanei
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratories, Berkeley, California 94720, United States
| | - Tony Huynh
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, California 94143, United States
| | - Youngho Seo
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, California 94143, United States
| | - Matthew B. Francis
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratories, Berkeley, California 94720, United States
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10
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Lechuga-Vieco AV, Groult H, Pellico J, Mateo J, Enríquez JA, Ruiz-Cabello J, Herranz F. Protein corona and phospholipase activity drive selective accumulation of nanomicelles in atherosclerotic plaques. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2018; 14:643-650. [DOI: 10.1016/j.nano.2017.12.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 11/27/2017] [Accepted: 12/23/2017] [Indexed: 10/24/2022]
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11
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Chen Y, Cao J, Zhao Q, Luo H, Wang Y, Dai W. Silencing MR-1 attenuates atherosclerosis in ApoE -/- mice induced by angiotensin II through FAK-Akt-mTOR-NF-kappaB signaling pathway. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2018. [PMID: 29520165 PMCID: PMC5840071 DOI: 10.4196/kjpp.2018.22.2.127] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Myofibrillogenesis regulator-1 (MR-1) is a novel protein involved in cellular proliferation, migration, inflammatory reaction and signal transduction. However, little information is available on the relationship between MR-1 expression and the progression of atherosclerosis. Here we report atheroprotective effects of silencing MR-1 in a model of Ang II-accelerated atherosclerosis, characterized by suppression focal adhesion kinase (FAK) and nuclear factor kappaB (NF-κB) signaling pathway, and atherosclerotic lesion macrophage content. In this model, administration of the siRNA-MR-1 substantially attenuated Ang II-accelerated atherosclerosis with stabilization of atherosclerotic plaques and inhibited FAK, Akt, mammalian target of rapamycin (mTOR) and NF-kB activation, which was associated with suppression of inflammatory factor and atherogenic gene expression in the artery. In vitro studies demonstrated similar changes in Ang II-treated vascular smooth muscle cells (VSMCs) and macrophages: siRNA-MR-1 inhibited the expression levels of proinflammatory factor. These studies uncover crucial proinflammatory mechanisms of Ang II and highlight actions of silencing MR-1 to inhibit Ang II signaling, which is atheroprotective.
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Affiliation(s)
- Yixi Chen
- Hunan Environment-Biological Polytechnic College, Hengyang Hunan 421005, China
| | - Jianping Cao
- Hunan Environment-Biological Polytechnic College, Hengyang Hunan 421005, China
| | - Qihui Zhao
- Hunan Environment-Biological Polytechnic College, Hengyang Hunan 421005, China
| | - Haiyong Luo
- Hunan Environment-Biological Polytechnic College, Hengyang Hunan 421005, China
| | - Yiguang Wang
- Key Lab of Antibiotic Biotechnology, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences, Beijing 100050, China
| | - Wenjian Dai
- Hunan Environment-Biological Polytechnic College, Hengyang Hunan 421005, China
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12
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Wang S, Hossack JA, Klibanov AL. Targeting of microbubbles: contrast agents for ultrasound molecular imaging. J Drug Target 2018; 26:420-434. [PMID: 29258335 DOI: 10.1080/1061186x.2017.1419362] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
For contrast ultrasound imaging, the most efficient contrast agents comprise highly compressible gas-filled microbubbles. These micrometer-sized particles are typically filled with low-solubility perfluorocarbon gases, and coated with a thin shell, often a lipid monolayer. These particles circulate in the bloodstream for several minutes; they demonstrate good safety and are already in widespread clinical use as blood pool agents with very low dosage necessary (sub-mg per injection). As ultrasound is an ubiquitous medical imaging modality, with tens of millions of exams conducted annually, its use for molecular/targeted imaging of biomarkers of disease may enable wider implementation of personalised medicine applications, precision medicine, non-invasive quantification of biomarkers, targeted guidance of biopsy and therapy in real time. To achieve this capability, microbubbles are decorated with targeting ligands, possessing specific affinity towards vascular biomarkers of disease, such as tumour neovasculature or areas of inflammation, ischaemia-reperfusion injury or ischaemic memory. Once bound to the target, microbubbles can be selectively visualised to delineate disease location by ultrasound imaging. This review discusses the general design trends and approaches for such molecular ultrasound imaging agents, which are currently at the advanced stages of development, and are evolving towards widespread clinical trials.
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Affiliation(s)
- Shiying Wang
- a Department of Biomedical Engineering , University of Virginia , Charlottesville , VA , USA
| | - John A Hossack
- a Department of Biomedical Engineering , University of Virginia , Charlottesville , VA , USA
| | - Alexander L Klibanov
- a Department of Biomedical Engineering , University of Virginia , Charlottesville , VA , USA.,b Cardiovascular Division (Department of Medicine), Robert M Berne Cardiovascular Research Center , University of Virginia , Charlottesville , VA , USA
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13
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Bode C, von zur Mühlen C. MRI, the technology for imaging of thrombi and inflammation. Hamostaseologie 2017; 35:252-62. [DOI: 10.5482/hamo-14-11-0061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Accepted: 01/13/2015] [Indexed: 11/05/2022] Open
Abstract
SummaryAtherosclerosis and its sequelae have a major impact on morbidity and mortality. The rupture of an inflamed atherosclerotic plaque is a crucial event, since it can result in acute thrombotic closure of an arterial vessel, resulting e. g. in myocardial infarction or stroke. Not only detection of early plaque rupture with imminent closure is therefore of clinical interest, but also timely detection of vascular inflammation and atherosclerotic plaque progression. However, plaque inflammation or even plaque rupture without vessel occlusion is not reliably detectable by current imaging techniques. Coronary angiography is the gold standard for evaluation of the coronary vessels, but only allows visualization of the vessel lumen without characterizing the important pathophysiology of the vessel wall. Therefore, highly inflamed and rupture prone plaques can be missed, or appear as a minor vessel narrowing. Although currently available techniques such as intravascular ultrasound or optical coherence tomography allow a further characterization of atherosclerotic plaques, it would be desirable to detect plaque inflammation, early plaque rupture or vascular thrombosis by non-invasive techniques such as magnetic resonance imaging (MRI), since they could allow early identification of patients at risk or triage of symptomatic patients.In this manuscript, different strategies for detection of vascular inflammation, plaque-rupture and thrombosis by MRI will be discussed, with a special focus on molecular imaging contrast agents.
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Noguchi T, Nakao K, Asaumi Y, Morita Y, Otsuka F, Kataoka Y, Hosoda H, Miura H, Fukuda T, Yasuda S. Noninvasive Coronary Plaque Imaging. J Atheroscler Thromb 2017; 25:281-293. [PMID: 29225326 PMCID: PMC5906180 DOI: 10.5551/jat.rv17019] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Early identification of high-risk or vulnerable atherosclerotic plaques prone to rupture and performing preemptive therapy prior to catastrophic cardiovascular events are optimal goals of plaque imaging. Despite the advances in imaging modalities to identify vulnerable characteristics, the predictive value of the imaging techniques in the clinical setting is still developing. In this regard, reliable and high-sensitive imaging modalities identifying vulnerable plaque characters that may lead to future cardiovascular events will be useful. In this review article, we describe a current non-invasive plaque imaging technique to identify high-risk coronary plaque features.
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Affiliation(s)
- Teruo Noguchi
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center
| | - Kazuhiro Nakao
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center
| | - Yasuhide Asaumi
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center
| | - Yoshiaki Morita
- Department of Radiology, National Cerebral and Cardiovascular Center
| | - Fumiyuki Otsuka
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center
| | - Yu Kataoka
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center
| | - Hayato Hosoda
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center
| | - Hiroyuki Miura
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center
| | - Tetsuya Fukuda
- Department of Radiology, National Cerebral and Cardiovascular Center
| | - Satoshi Yasuda
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center
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Pérez-Medina C, Hak S, Reiner T, Fayad ZA, Nahrendorf M, Mulder WJM. Integrating nanomedicine and imaging. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2017; 375:rsta.2017.0110. [PMID: 29038380 PMCID: PMC5647268 DOI: 10.1098/rsta.2017.0110] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/10/2017] [Indexed: 05/05/2023]
Abstract
Biomedical engineering and its associated disciplines play a pivotal role in improving our understanding and management of disease. Motivated by past accomplishments, such as the clinical implementation of coronary stents, pacemakers or recent developments in antibody therapies, disease management now enters a new era in which precision imaging and nanotechnology-enabled therapeutics are maturing to clinical translation. Preclinical molecular imaging increasingly focuses on specific components of the immune system that drive disease progression and complications, allowing the in vivo study of potential therapeutic targets. The first multicentre trials highlight the potential of clinical multimodality imaging for more efficient drug development. In this perspective, the role of integrating engineering, nanotechnology, molecular imaging and immunology to yield precision medicine is discussed.This article is part of the themed issue 'Challenges for chemistry in molecular imaging'.
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Affiliation(s)
- Carlos Pérez-Medina
- Department of Radiology, Icahn School of Medicine at Mount Sinai, Translational and Molecular Imaging Institute, One Gustave L. Levy Place, Box 1234, New York, NY 10029, USA
| | - Sjoerd Hak
- Department of Circulation and Medical Imaging, The Norwegian University of Science and Technology, 7030 Trondheim, Norway
| | - Thomas Reiner
- Department of Radiology, Memorial Sloan-Kettering Cancer Center, New York, NY 10065, USA
- Department of Radiology, Weill Cornell Medical College, New York, NY 10065, USA
| | - Zahi A Fayad
- Department of Radiology, Icahn School of Medicine at Mount Sinai, Translational and Molecular Imaging Institute, One Gustave L. Levy Place, Box 1234, New York, NY 10029, USA
| | - Matthias Nahrendorf
- Center for Systems Biology and Department of Imaging, Simches Research Building, 185 Cambridge Street, Boston, MA 02114, USA
- Cardiovascular Research Center, Massachusetts General Hospital and Harvard Medical School, Simches Research Building, 185 Cambridge Street, Boston, MA 02114, USA
| | - Willem J M Mulder
- Department of Radiology, Icahn School of Medicine at Mount Sinai, Translational and Molecular Imaging Institute, One Gustave L. Levy Place, Box 1234, New York, NY 10029, USA
- Department of Vascular Medicine, Academic Medical Center, Meibergdreef 9, Amsterdam 1105 AZ, The Netherlands
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16
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Desu HR, Thoma LA, Wood GC. αvβ3 Integrin Receptor Targeting and Near-Infrared Imaging of Solid Tumors Using Surface-Modified Nanoliposomes. J Pharm Innov 2017. [DOI: 10.1007/s12247-017-9296-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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17
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Günther F, Heidt T, Kramer M, Khanicheh E, Klibanov AL, Geibel-Zehender A, Ferrante EA, Hilgendorf I, Wolf D, Zirlik A, Reinöhl J, Bode C, Peter K, Kaufmann BA, Mühlen CVZ. Dual targeting improves capture of ultrasound microbubbles towards activated platelets but yields no additional benefit for imaging of arterial thrombosis. Sci Rep 2017; 7:14898. [PMID: 29097799 PMCID: PMC5668440 DOI: 10.1038/s41598-017-15080-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 10/20/2017] [Indexed: 01/13/2023] Open
Abstract
Platelets can be found on the surface of inflamed and ruptured atherosclerotic plaques. Thus, targeting of activated platelets may allow for molecular imaging of vulnerable atherosclerotic lesions. We here investigated microbubbles (MB) functionalized with the selectin ligand sialyl Lewisa individually (MBsLea) or dually with sLea and an antibody targeting ligand-induced binding sites of the activated GPIIb/IIIa receptor (MBDual). Assessed by in vitro flow chamber, targeted MB exhibited increased adhesion to platelets as compared to MBControl. While MBsLea rolled slowly on the platelets’ surface, MBDual enhanced the percentage of firm adhesion. In vivo, MB were investigated by ultrasound in a model of ferric chloride induced non-occlusive carotid artery thrombosis. MBsLea and MBDual revealed a higher ultrasound mean acoustic intensity than MBControl (p < 0.05), however MBDual demonstrated no additional increase in mean signal intensity as compared to MBsLea. The degree of carotid artery stenosis on histology correlated well with the ultrasound acoustic intensity of targeted MB (p < 0.05). While dual targeting of MB using fast binding carbohydrate polymers and specific antibodies is a promising strategy to support adhesion to activated platelets under arterial shear stress, these advantages seem not readily translatable to in vivo models.
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Affiliation(s)
- F Günther
- Heart Center Freiburg University and Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - T Heidt
- Heart Center Freiburg University and Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - M Kramer
- Heart Center Freiburg University and Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - E Khanicheh
- University Hospital of Basel, Basel, Switzerland
| | | | - A Geibel-Zehender
- Heart Center Freiburg University and Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - E A Ferrante
- National Institute of Health, NHLBI, Bethesda, USA
| | - I Hilgendorf
- Heart Center Freiburg University and Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - D Wolf
- Heart Center Freiburg University and Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - A Zirlik
- Heart Center Freiburg University and Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - J Reinöhl
- Heart Center Freiburg University and Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - C Bode
- Heart Center Freiburg University and Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - K Peter
- Baker IDI Heart and Diabetes Institute, Melbourne, Australia
| | - B A Kaufmann
- University Hospital of Basel, Basel, Switzerland
| | - C von Zur Mühlen
- Heart Center Freiburg University and Faculty of Medicine, University of Freiburg, Freiburg, Germany.
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18
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Abstract
The development of new methods to image the onset and progression of thrombosis is an unmet need. Non-invasive molecular imaging techniques targeting specific key structures involved in the formation of thrombosis have demonstrated the ability to detect thrombus in different disease state models and in patients. Due to its high concentration in the thrombus and its essential role in thrombus formation, the detection of fibrin is an attractive strategy for identification of thrombosis. Herein we provide an overview of recent and selected fibrin-targeted probes for molecular imaging of thrombosis by magnetic resonance imaging (MRI), positron emission tomography (PET), single photon emission computed tomography (SPECT), and optical techniques. Emphasis is placed on work that our lab has explored over the last 15 years that has resulted in the progression of the fibrin-binding PET probe [64Cu]FBP8 from preclinical studies into human trials.
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Affiliation(s)
- Bruno L Oliveira
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK.
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19
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Jung C, Christiansen S, Kaul MG, Koziolek E, Reimer R, Heeren J, Adam G, Heine M, Ittrich H. Quantitative and qualitative estimation of atherosclerotic plaque burden in vivo at 7T MRI using Gadospin F in comparison to en face preparation evaluated in ApoE KO mice. PLoS One 2017; 12:e0180407. [PMID: 28771481 PMCID: PMC5542445 DOI: 10.1371/journal.pone.0180407] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Accepted: 06/15/2017] [Indexed: 12/18/2022] Open
Abstract
Background The aim of the study was to quantify atherosclerotic plaque burden by volumetric assessment and T1 relaxivity measurement at 7T MRI using Gadospin F (GDF) in comparison to en face based measurements. Methods and results 9-weeks old ApoE-/- (n = 5 for each group) and wildtype mice (n = 5) were set on high fat diet (HFD). Progression group received MRI at 9, 13, 17 and 21 weeks after HFD initiation. Regression group was reswitched to chow diet (CD) after 13 weeks HFD and monitored with MRI for 12 weeks. MRI was performed before and two hours after iv injection of GDF (100 μmol/kg) at 7T (Clinscan, Bruker) acquiring a 3D inversion recovery gradient echo sequence and T1 Mapping using Saturation Recovery sequences. Subsequently, aortas were prepared for en face analysis using confocal microscopy. Total plaque volume (TPV) and T1 relaxivity were estimated using ImageJ (V. 1.44p, NIH, USA). 2D and 3D en face analysis showed a strong and exponential increase of plaque burden over time, while plaque burden in regression group was less pronounced. Correspondent in vivo MRI measurements revealed a more linear increase of TPV and T1 relaxivity for regression group. A significant correlation was observed between 2D and 3D en face analysis (r = 0.79; p<0.001) as well as between 2D / 3D en face analysis and MRI (r = 0.79; p<0.001; r = 0.85; p<0.001) and delta R1 (r = 0.79; p<0.001; r = 0.69; p<0.01). Conclusion GDF-enhanced in vivo MRI is a powerful non-invasive imaging technique in mice allowing for reliable estimation of atherosclerotic plaque burden, monitoring of disease progression and regression in preclinical studies.
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Affiliation(s)
- Caroline Jung
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- * E-mail:
| | - Sabine Christiansen
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Michael Gerhard Kaul
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Eva Koziolek
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Department of Nuclear Medicine, Berlin Experimental Radionuclide Imaging Center (BERIC), University Medical Center Charité, Berlin, Germany
| | - Rudolph Reimer
- Heinrich-Pette-Institute, Leibniz Institute for Experimental Virology, Hamburg, Germany
| | - Jörg Heeren
- Department of Biochemistry and Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Gerhard Adam
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Markus Heine
- Department of Biochemistry and Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Harald Ittrich
- Department of Diagnostic and Interventional Radiology and Nuclear Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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20
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Zhang X, Li J, Qin JJ, Cheng WL, Zhu X, Gong FH, She Z, Huang Z, Xia H, Li H. Oncostatin M receptor β deficiency attenuates atherogenesis by inhibiting JAK2/STAT3 signaling in macrophages. J Lipid Res 2017; 58:895-906. [PMID: 28258089 PMCID: PMC5408608 DOI: 10.1194/jlr.m074112] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 03/03/2017] [Indexed: 12/31/2022] Open
Abstract
Oncostatin M (OSM) is a secreted cytokine mainly involved in chronic inflammatory and cardiovascular diseases through binding to OSM receptor β (OSMR-β). Recent studies demonstrated that the presence of OSM contributed to the destabilization of atherosclerotic plaque. To investigate whether OSMR-β deficiency affects atherosclerosis, male OSMR-β−/−ApoE−/− mice were generated and utilized. Here we observed that OSMR-β expression was remarkably upregulated in both human and mouse atherosclerotic lesions, which were mainly located in macrophages. We found that OSMR-β deficiency significantly ameliorated atherosclerotic burden in aorta and aortic root relative to ApoE-deficient littermates and enhanced the stability of atherosclerotic plaques by increasing collagen and smooth muscle cell content, while decreasing macrophage infiltration and lipid accumulation. Moreover, bone marrow transplantation of OSMR-β−/− hematopoietic cells to atherosclerosis-prone mice displayed a consistent phenotype. Additionally, we observed a relatively reduced level of JAK2 and signal transducer and activator of transcription (STAT)3 in vivo and under Ox-LDL stimulation in vitro. Our findings suggest that OSMR-β deficiency in macrophages improved high-fat diet-induced atherogenesis and plaque vulnerability. Mechanistically, the protective effect of OSMR-β deficiency on atherosclerosis may be partially attributed to the inhibition of the JAK2/STAT3 activation in macrophages, whereas OSM stimulation can activate the signaling pathway.
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Affiliation(s)
- Xin Zhang
- Department of Cardiology, Renmin Hospital, Wuhan University, Wuhan, China.,Institute of Model Animals, Wuhan University, Wuhan, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan, China
| | - Jing Li
- Department of Cardiology, Renmin Hospital, Wuhan University, Wuhan, China
| | - Juan-Juan Qin
- Department of Cardiology, Renmin Hospital, Wuhan University, Wuhan, China.,Institute of Model Animals, Wuhan University, Wuhan, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan, China
| | - Wen-Lin Cheng
- Department of Cardiology, Renmin Hospital, Wuhan University, Wuhan, China.,Institute of Model Animals, Wuhan University, Wuhan, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan, China
| | - Xueyong Zhu
- Department of Cardiology, Renmin Hospital, Wuhan University, Wuhan, China.,Institute of Model Animals, Wuhan University, Wuhan, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan, China
| | - Fu-Han Gong
- Department of Cardiology, Renmin Hospital, Wuhan University, Wuhan, China
| | - Zhigang She
- Department of Cardiology, Renmin Hospital, Wuhan University, Wuhan, China.,Institute of Model Animals, Wuhan University, Wuhan, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan, China
| | - Zan Huang
- College of Life Science, Wuhan University, Wuhan, China
| | - Hao Xia
- Department of Cardiology, Renmin Hospital, Wuhan University, Wuhan, China
| | - Hongliang Li
- Department of Cardiology, Renmin Hospital, Wuhan University, Wuhan, China .,Institute of Model Animals, Wuhan University, Wuhan, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan, China
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21
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Wu M, Springeling G, Lovrak M, Mastik F, Iskander-Rizk S, Wang T, van Beusekom HMM, van der Steen AFW, Van Soest G. Real-time volumetric lipid imaging in vivo by intravascular photoacoustics at 20 frames per second. BIOMEDICAL OPTICS EXPRESS 2017; 8:943-953. [PMID: 28270995 PMCID: PMC5330573 DOI: 10.1364/boe.8.000943] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 01/10/2017] [Accepted: 01/11/2017] [Indexed: 05/03/2023]
Abstract
Lipid deposition can be assessed with combined intravascular photoacoustic/ultrasound (IVPA/US) imaging. To date, the clinical translation of IVPA/US imaging has been stalled by a low imaging speed and catheter complexity. In this paper, we demonstrate imaging of lipid targets in swine coronary arteries in vivo, at a clinically useful frame rate of 20 s-1. We confirmed image contrast for atherosclerotic plaque in human samples ex vivo. The system is on a mobile platform and provides real-time data visualization during acquisition. We achieved an IVPA signal-to-noise ratio of 20 dB. These data show that clinical translation of IVPA is possible in principle.
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Affiliation(s)
- Min Wu
- Department of Biomedical Engineering, Thorax Center, Erasmus University Medical Center, PO Box 2040, 3000 CA Rotterdam, The Netherlands
| | - Geert Springeling
- Department of Experimental Medical Instrumentation, Erasmus University Medical Center PO Box 2040, 3000 CA Rotterdam, The Netherlands
| | - Matija Lovrak
- Department of Chemical Engineering, Delft University of Technology, van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Frits Mastik
- Department of Biomedical Engineering, Thorax Center, Erasmus University Medical Center, PO Box 2040, 3000 CA Rotterdam, The Netherlands
| | - Sophinese Iskander-Rizk
- Department of Biomedical Engineering, Thorax Center, Erasmus University Medical Center, PO Box 2040, 3000 CA Rotterdam, The Netherlands
| | - Tianshi Wang
- Department of Biomedical Engineering, Thorax Center, Erasmus University Medical Center, PO Box 2040, 3000 CA Rotterdam, The Netherlands
| | - Heleen M. M. van Beusekom
- Department of Biomedical Engineering, Thorax Center, Erasmus University Medical Center, PO Box 2040, 3000 CA Rotterdam, The Netherlands
| | - A. F. W. van der Steen
- Department of Biomedical Engineering, Thorax Center, Erasmus University Medical Center, PO Box 2040, 3000 CA Rotterdam, The Netherlands
- Department of Imaging Science and Technology, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, 518055 Shenzhen, China
| | - Gijs Van Soest
- Department of Biomedical Engineering, Thorax Center, Erasmus University Medical Center, PO Box 2040, 3000 CA Rotterdam, The Netherlands
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22
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Chan JMS, Cheung MSH, Gibbs RGJ, Bhakoo KK. MRI detection of endothelial cell inflammation using targeted superparamagnetic particles of iron oxide (SPIO). Clin Transl Med 2017; 6:1. [PMID: 28044245 PMCID: PMC5206220 DOI: 10.1186/s40169-016-0134-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 12/21/2016] [Indexed: 01/10/2023] Open
Abstract
Background There is currently no clinical imaging technique available to assess the degree of inflammation associated with atherosclerotic plaques. This study aims to develop targeted superparamagnetic particles of iron oxide (SPIO) as a magnetic resonance imaging (MRI) probe for detecting inflamed endothelial cells. Methods The in vitro study consists of the characterisation and detection of inflammatory markers on activated endothelial cells by immunocytochemistry and MRI using biotinylated anti-P-selectin and anti-VCAM-1 (vascular cell adhesion molecule 1) antibody and streptavidin conjugated SPIO. Results Established an in vitro cellular model of endothelial inflammation induced with TNF-α (tumor necrosis factor alpha). Inflammation of endothelial cells was confirmed with both immunocytochemistry and MRI. These results revealed both a temporal and dose dependent expression of the inflammatory markers, P-selectin and VCAM-1, on exposure to TNF-α. Conclusion This study has demonstrated the development of an in vitro model to characterise and detect inflamed endothelial cells by immunocytochemistry and MRI. This will allow the future development of contrast agents and protocols for imaging vascular inflammation in atherosclerosis. This work may form the basis for a translational study to provide clinicians with a novel tool for the in vivo assessment of atherosclerosis.
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Affiliation(s)
- Joyce M S Chan
- Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong SAR, People's Republic of China. .,Regional Vascular Unit, St Mary's Hospital, Imperial College Healthcare NHS Trust, Imperial College London, London, UK. .,Translational Molecular Imaging Group, Singapore Bioimaging Consortium, Agency for Science, Technology and Research (A*STAR), 11 Biopolis Way, Helios, 138667, Singapore.
| | - Maggie S H Cheung
- Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong SAR, People's Republic of China
| | - Richard G J Gibbs
- Regional Vascular Unit, St Mary's Hospital, Imperial College Healthcare NHS Trust, Imperial College London, London, UK
| | - Kishore K Bhakoo
- Translational Molecular Imaging Group, Singapore Bioimaging Consortium, Agency for Science, Technology and Research (A*STAR), 11 Biopolis Way, Helios, 138667, Singapore
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23
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VanderLaan D, Karpiouk A, Yeager D, Emelianov S. Real-Time Intravascular Ultrasound and Photoacoustic Imaging. IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL 2017; 64:141-149. [PMID: 28092507 PMCID: PMC5985516 DOI: 10.1109/tuffc.2016.2640952] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Combined intravascular ultrasound and intravascular photoacoustic (IVUS/IVPA) imaging is an emerging hybrid modality being explored as a means of improving the characterization of atherosclerotic plaque anatomical and compositional features. While initial demonstrations of the technique have been encouraging, they have been limited by catheter rotation and data acquisition, displaying, and processing rates on the order of several seconds per frame as well as the use of off-line image processing. Herein, we present a complete IVUS/IVPA imaging system and method capable of real-time IVUS/IVPA imaging, with online data acquisition, image processing, and display of both IVUS and IVPA images. The integrated IVUS/IVPA catheter is fully contained within a 1-mm outer diameter torque cable coupled on the proximal end to a custom-designed spindle enabling optical and electrical coupling to system hardware, including a nanosecond-pulsed laser with a controllable pulse repetition frequency capable of greater than 10 kHz, motor and servo drive, a US pulser/receiver, and a 200-MHz digitizer. The system performance is characterized and demonstrated on a vessel-mimicking phantom with an embedded coronary stent intended to provide IVPA contrast within content of an IVUS image.
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Affiliation(s)
- Donald VanderLaan
- Electrical & Computer Engineering, Georgia Institute of Technology, Atlanta GA 30332, United States
| | - Andrei Karpiouk
- Electrical & Computer Engineering, Georgia Institute of Technology, Atlanta GA 30332, United States
| | - Doug Yeager
- Electrical & Computer Engineering, Georgia Institute of Technology, Atlanta GA 30332, United States
| | - Stanislav Emelianov
- Electrical & Computer Engineering, Georgia Institute of Technology, Atlanta GA 30332, United States
- Corresponding author:
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24
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Pelisek J, Wendorff H, Wendorff C, Kuehnl A, Eckstein HH. Age-associated changes in human carotid atherosclerotic plaques. Ann Med 2016; 48:541-551. [PMID: 27595161 DOI: 10.1080/07853890.2016.1204468] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Little is known about changes in carotid plaque morphology during aging and the possible impact on cardiovascular events. Only few studies addressed so far age-related modifications within atherosclerotic lesions. Therefore, in this work we endeavored to summarize the current knowledge about changing of plaque composition in elderly. The data from hitherto existing studies confirm that atherosclerotic plaques undergo distinct alternations with advanced age. However, the results are often ambiguous and the changes do not seem to be as disastrous as expected. Interestingly, none of the studies could definitely evidence increased plaque vulnerability with advanced age. Nevertheless, based on the previous work showing decrease in elastin fibers, fibroatheroma, SMCs, overall cellularity and increase in the area of lipid core, hemorrhage, and calcification, the plaque morphology appears to transform toward unstable plaques. Otherwise, even if inflammatory cells often accumulate in plaques of younger patients, their amount is reduced in the older age and so far no clear association has been observed between thin fibrous cap and aging. Thus, the accurate contribution of age-related changes in plaque morphology to cardiovascular events has yet to be elucidated. KEY MESSAGES Composition of carotid atherosclerotic lesions changes during aging. These alternations are however, just moderate and depend upon additional variables, such as life style, accompanying disease, genetics, and other factors that have yet to be determined. Based on the current data, the age-associated plaque morphology seems to transform toward vulnerable plaques. However, the changes do not seem to be as disastrous as expected.
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Affiliation(s)
- Jaroslav Pelisek
- a Department of Vascular and Endovascular Surgery , Klinikum rechts der Isar der Technischen Universitaet Muenchen , Munich , Germany
| | - Heiko Wendorff
- a Department of Vascular and Endovascular Surgery , Klinikum rechts der Isar der Technischen Universitaet Muenchen , Munich , Germany
| | - Carina Wendorff
- a Department of Vascular and Endovascular Surgery , Klinikum rechts der Isar der Technischen Universitaet Muenchen , Munich , Germany
| | - Andreas Kuehnl
- a Department of Vascular and Endovascular Surgery , Klinikum rechts der Isar der Technischen Universitaet Muenchen , Munich , Germany
| | - Hans-Henning Eckstein
- a Department of Vascular and Endovascular Surgery , Klinikum rechts der Isar der Technischen Universitaet Muenchen , Munich , Germany
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25
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Daeichin V, Wu M, De Jong N, van der Steen AFW, van Soest G. Frequency Analysis of the Photoacoustic Signal Generated by Coronary Atherosclerotic Plaque. ULTRASOUND IN MEDICINE & BIOLOGY 2016; 42:2017-25. [PMID: 27181689 DOI: 10.1016/j.ultrasmedbio.2016.03.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Revised: 03/10/2016] [Accepted: 03/20/2016] [Indexed: 05/11/2023]
Abstract
The identification of unstable atherosclerotic plaques in the coronary arteries is emerging as an important tool for guiding percutaneous coronary interventions and may enable preventive treatment of such plaques in the future. Assessment of plaque stability requires imaging of both structure and composition. Spectroscopic photoacoustic (sPA) imaging can visualize atherosclerotic plaque composition on the basis of the optical absorption contrast. It is an established fact that the frequency content of the photoacoustic (PA) signal is correlated with structural tissue properties. As PA signals can be weak, it is important to match the transducer bandwidth to the signal frequency content for in vivo imaging. In this ex vivo study on human coronary arteries, we combined sPA imaging and analysis of frequency content of the PA signals. Using a broadband transducer (-3-dB one-way bandwidth of 10-35 MHz) and a 1-mm needle hydrophone (calibrated for 1-20 MHz), we covered a large frequency range of 1-35 MHz for receiving the PA signals. Spectroscopic PA imaging was performed at wavelengths ranging from 1125 to 1275 nm with a step of 2 nm, allowing discrimination between plaque lipids and adventitial tissue. Under sPA imaging guidance, the frequency content of the PA signals from the plaque lipids was quantified. Our data indicate that more than 80% of the PA energy of the coronary plaque lipids lies in the frequency band below 8 MHz. This frequency information can guide the choice of the transducer element used for PA catheter fabrication.
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Affiliation(s)
- Verya Daeichin
- Thoraxcenter Biomedical Engineering, Erasmus MC, Rotterdam, The Netherlands.
| | - Min Wu
- Thoraxcenter Biomedical Engineering, Erasmus MC, Rotterdam, The Netherlands
| | - Nico De Jong
- Thoraxcenter Biomedical Engineering, Erasmus MC, Rotterdam, The Netherlands; Acoustic Wavefield Imaging, Delft University of Technology, Delft, The Netherlands
| | - Antonius F W van der Steen
- Thoraxcenter Biomedical Engineering, Erasmus MC, Rotterdam, The Netherlands; Acoustic Wavefield Imaging, Delft University of Technology, Delft, The Netherlands
| | - Gijs van Soest
- Thoraxcenter Biomedical Engineering, Erasmus MC, Rotterdam, The Netherlands
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26
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Chung J, Shim H, Kim K, Lee D, Kim WJ, Kang DH, Kang SW, Jo H, Kwon K. Discovery of novel peptides targeting pro-atherogenic endothelium in disturbed flow regions -Targeted siRNA delivery to pro-atherogenic endothelium in vivo. Sci Rep 2016; 6:25636. [PMID: 27173134 PMCID: PMC4901192 DOI: 10.1038/srep25636] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 04/20/2016] [Indexed: 01/27/2023] Open
Abstract
Atherosclerosis occurs preferentially in arterial regions exposed to disturbed blood flow. Targeting these pro-atherogenic regions is a potential anti-atherogenic therapeutic approach, but it has been extremely challenging. Here, using in vivo phage display approach and the partial carotid ligation model of flow-induced atherosclerosis in mouse, we identified novel peptides that specifically bind to endothelial cells (ECs) exposed to disturbed flow condition in pro-atherogenic regions. Two peptides, CLIRRTSIC and CPRRSHPIC, selectively bound to arterial ECs exposed to disturbed flow not only in the partially ligated carotids but also in the lesser curvature and branching point of the aortic arch in mice as well as human pulmonary artery branches. Peptides were conjugated to branched polyethylenimine-polyethylene glycol polymer to generate polyplexes carrying siRNA targeting intercellular adhesion molecule-1 (siICAM-1). In mouse model, CLIRRTSIC polyplexes carrying si-ICAM-1 specifically bound to endothelium in disturbed flow regions, reducing endothelial ICAM-1 expression. Mass spectrometry analysis revealed that non-muscle myosin heavy chain II A (NMHC IIA) is a protein targeted by CLIRRTSIC peptide. Further studies showed that shear stress regulates NMHC IIA expression and localization in ECs. The CLIRRTSIC is a novel peptide that could be used for targeted delivery of therapeutics such as siRNAs to pro-atherogenic endothelium.
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Affiliation(s)
- Jihwa Chung
- Medical Research Institute, School of Medicine, Ewha Womans University, Seoul,158-710, Republic of Korea
| | - Hyunbo Shim
- Departments of Bioinspired Science and Life Science, Ewha Womans University, 11-1 Daehyun-dong, Seodaemoon-gu, Seoul, 120-750, Republic of Korea
| | - Kwanchang Kim
- Department of Thoracic surgery, School of Medicine, Ewha Womans University, Seoul, 158-710, Republic of Korea
| | - Duhwan Lee
- Center for Self-assembly and Complexity, Institute for Basic Science (IBS), and Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Won Jong Kim
- Center for Self-assembly and Complexity, Institute for Basic Science (IBS), and Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Dong Hoon Kang
- Department of Life Science, College of Natural Science, Ewha Womans University, 11-1 Daehyun-dong, Seodaemoon-gu, Seoul, 120-750, Republic of Korea
| | - Sang Won Kang
- Department of Life Science, College of Natural Science, Ewha Womans University, 11-1 Daehyun-dong, Seodaemoon-gu, Seoul, 120-750, Republic of Korea
| | - Hanjoong Jo
- Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia, USA
| | - Kihwan Kwon
- Medical Research Institute, School of Medicine, Ewha Womans University, Seoul,158-710, Republic of Korea.,Department of Internal Medicine, Cardiology Division, School of Medicine, Ewha Womans University, Seoul, 158-710, Republic of Korea
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27
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Abstract
Molecular imaging offers great potential for noninvasive visualization and quantitation of the cellular and molecular components involved in atherosclerotic plaque stability. In this chapter, we review emerging molecular imaging modalities and approaches for quantitative, noninvasive detection of early biological processes in atherogenesis, including vascular endothelial permeability, endothelial adhesion molecule up-regulation, and macrophage accumulation, with special emphasis on mouse models. We also highlight a number of targeted imaging nanomaterials for assessment of advanced atherosclerotic plaques, including extracellular matrix degradation, proteolytic enzyme activity, and activated platelets using mouse models of atherosclerosis. The potential for clinical translation of molecular imaging nanomaterials for assessment of atherosclerotic plaque biology, together with multimodal approaches is also discussed.
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29
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Abstract
The mouse is the mammalian model of choice for investigating cardiovascular biology, given our ability to manipulate it by genetic, pharmacologic, mechanical, and environmental means. Imaging is an important approach to phenotyping both function and structure of cardiac and vascular components. This review details commonly used imaging approaches, with a focus on echocardiography and magnetic resonance imaging and brief overviews of other imaging modalities. We also briefly outline emerging imaging approaches but caution that reliability and validity data may be lacking.
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Affiliation(s)
- Colin K L Phoon
- Division of Pediatric Cardiology, Department of Pediatrics, New York University School of Medicine, New York, New York
| | - Daniel H Turnbull
- Departments of Radiology and Pathology, New York University School of Medicine, New York, New York.,Skirball Institute of Biomolecular Medicine, New York University School of Medicine, New York, New York
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30
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Eid M, De Cecco CN, Schoepf UJ, Mangold S, Tesche C, Varga-Szemes A, Suranyi P, Stalcup S, Ball BD, Caruso D. The Role of MRI and CT in the Diagnosis of Atherosclerosis in an Aging Population. CURRENT RADIOLOGY REPORTS 2016. [DOI: 10.1007/s40134-016-0141-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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31
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Chhour P, Naha PC, O'Neill SM, Litt HI, Reilly MP, Ferrari VA, Cormode DP. Labeling monocytes with gold nanoparticles to track their recruitment in atherosclerosis with computed tomography. Biomaterials 2016; 87:93-103. [PMID: 26914700 DOI: 10.1016/j.biomaterials.2016.02.009] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Revised: 01/26/2016] [Accepted: 02/07/2016] [Indexed: 01/21/2023]
Abstract
Monocytes are actively recruited from the circulation into developing atherosclerotic plaques. In the plaque, monocytes differentiate into macrophages and eventually form foam cells. Continued accumulation of foam cells can lead to plaque rupture and subsequent myocardial infarction. X-ray computed tomography (CT) is the best modality to image the coronary arteries non-invasively, therefore we have sought to track the accumulation of monocytes into atherosclerotic plaques using CT. Gold nanoparticles were synthesized and stabilized with a variety of ligands. Select formulations were incubated with an immortalized monocyte cell line in vitro and evaluated for cytotoxicity, effects on cytokine release, and cell uptake. These data identified a lead formulation, 11-MUDA capped gold nanoparticles, to test for labeling primary monocytes. The formulation did not the affect the viability or cytokine release of primary monocytes and was highly taken up by these cells. Gold labeled primary monocytes were injected into apolipoprotein E deficient mice kept on Western diet for 10 weeks. Imaging was done with a microCT scanner. A significant increase in attenuation was measured in the aorta of mice receiving the gold labeled cells as compared to control animals. Following the experiment, the biodistribution of gold was evaluated in major organs. Additionally, plaques were sectioned and examined with electron microscopy. The results showed that gold nanoparticles were present inside monocytes located within plaques. This study demonstrates the feasibility of using gold nanoparticles as effective cell labeling contrast agents for non-invasive imaging of monocyte accumulation within plaques with CT.
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Affiliation(s)
- Peter Chhour
- Department of Radiology, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104, USA; Department of Bioengineering, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104, USA
| | - Pratap C Naha
- Department of Radiology, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104, USA
| | - Sean M O'Neill
- Department of Medicine, Division of Cardiovascular Medicine, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104, USA
| | - Harold I Litt
- Department of Radiology, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104, USA; Department of Medicine, Division of Cardiovascular Medicine, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104, USA
| | - Muredach P Reilly
- Department of Medicine, Division of Cardiovascular Medicine, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104, USA
| | - Victor A Ferrari
- Department of Medicine, Division of Cardiovascular Medicine, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104, USA
| | - David P Cormode
- Department of Radiology, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104, USA; Department of Bioengineering, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104, USA; Department of Medicine, Division of Cardiovascular Medicine, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104, USA.
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32
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Kaczyńska A, Guzdek K, Derszniak K, Karewicz A, Lewandowska-Łańcucka J, Mateuszuk Ł, Skórka T, Banasik T, Jasiński K, Kapusta C, Chlopicki S, Nowakowska M. Novel nanostructural contrast for magnetic resonance imaging of endothelial inflammation: targeting SPIONs to vascular endothelium. RSC Adv 2016. [DOI: 10.1039/c6ra10994b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This study aimed to develop superparamagnetic iron oxide nanoparticles (SPIONs) targeted to the areas of vascular endothelium changed in the initial inflammation process, a first step of numerous cardiovascular diseases.
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33
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Wu M, Fw van der Steen A, Regar E, van Soest G. Emerging Technology Update Intravascular Photoacoustic Imaging of Vulnerable Atherosclerotic Plaque. Interv Cardiol 2016; 11:120-123. [PMID: 29588718 DOI: 10.15420/icr.2016:13:3] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
The identification of vulnerable atherosclerotic plaques in the coronary arteries is emerging as an important tool for guiding atherosclerosis diagnosis and interventions. Assessment of plaque vulnerability requires knowledge of both the structure and composition of the plaque. Intravascular photoacoustic (IVPA) imaging is able to show the morphology and composition of atherosclerotic plaque. With imminent improvements in IVPA imaging, it is becoming possible to assess human coronary artery disease in vivo. Although some challenges remain, IVPA imaging is on its way to being a powerful tool for visualising coronary atherosclerotic features that have been specifically associated with plaque vulnerability and clinical syndromes, and thus such imaging might become valuable for clinical risk assessment in the catheterisation laboratory.
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Affiliation(s)
- Min Wu
- Department of Biomedical Engineering, Thorax Centre, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Antonius Fw van der Steen
- Department of Biomedical Engineering, Thorax Centre, Erasmus Medical Center, Rotterdam, The Netherlands.,Interuniversity Cardiology Institute of The Netherlands, Netherlands Heart Institute, Utrecht, The Netherlands.,Department of Imaging Science and Technology, Delft University of Technology, Delft, The Netherlands.,Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Evelyn Regar
- Department of interventional cardiology, Thorax Center, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Gijs van Soest
- Department of Biomedical Engineering, Thorax Centre, Erasmus Medical Center, Rotterdam, The Netherlands
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34
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Hui J, Yu Q, Ma T, Wang P, Cao Y, Bruning RS, Qu Y, Chen Z, Zhou Q, Sturek M, Cheng JX, Chen W. High-speed intravascular photoacoustic imaging at 1.7 μm with a KTP-based OPO. BIOMEDICAL OPTICS EXPRESS 2015; 6:4557-66. [PMID: 26601018 PMCID: PMC4646562 DOI: 10.1364/boe.6.004557] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 10/18/2015] [Accepted: 10/19/2015] [Indexed: 05/03/2023]
Abstract
Lipid deposition inside the arterial wall is a hallmark of plaque vulnerability. Based on overtone absorption of C-H bonds, intravascular photoacoustic (IVPA) catheter is a promising technology for quantifying the amount of lipid and its spatial distribution inside the arterial wall. Thus far, the clinical translation of IVPA technology is limited by its slow imaging speed due to lack of a high-pulse-energy high-repetition-rate laser source for lipid-specific first overtone excitation at 1.7 μm. Here, we demonstrate a potassium titanyl phosphate (KTP)-based optical parametric oscillator with output pulse energy up to 2 mJ at a wavelength of 1724 nm and with a repetition rate of 500 Hz. Using this laser and a ring-shape transducer, IVPA imaging at speed of 1 frame per sec was demonstrated. Performance of the IVPA imaging system's resolution, sensitivity, and specificity were characterized by carbon fiber and a lipid-mimicking phantom. The clinical utility of this technology was further evaluated ex vivo in an excised atherosclerotic human femoral artery with comparison to histology.
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Affiliation(s)
- Jie Hui
- Department of Physics and Astronomy, Purdue University, West Lafayette, IN, 47906, USA ; These authors contributed equally to this work
| | - Qianhuan Yu
- Key Laboratory of Space Laser Communication and Detection Technology, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China ; University of Chinese Academy of Science, Beijing 100049, China ; These authors contributed equally to this work
| | - Teng Ma
- Department of Biomedical Engineering, NIH Ultrasonic Transducer Resource Center, University of Southern California, Los Angeles, CA, 90089, USA ; These authors contributed equally to this work
| | - Pu Wang
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, 47906, USA
| | - Yingchun Cao
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, 47906, USA
| | - Rebecca S Bruning
- Department of Cellular & Integrative Physiology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Yueqiao Qu
- Department of Biomedical Engineering, University of California, Irvine, Irvine, CA, 92612, USA
| | - Zhongping Chen
- Department of Biomedical Engineering, University of California, Irvine, Irvine, CA, 92612, USA
| | - Qifa Zhou
- Department of Biomedical Engineering, NIH Ultrasonic Transducer Resource Center, University of Southern California, Los Angeles, CA, 90089, USA
| | - Michael Sturek
- Department of Cellular & Integrative Physiology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Ji-Xin Cheng
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, 47906, USA ;
| | - Weibiao Chen
- Key Laboratory of Space Laser Communication and Detection Technology, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China ;
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35
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Magnetic Resonance Imaging of Atherosclerosis Using CD81-Targeted Microparticles of Iron Oxide in Mice. BIOMED RESEARCH INTERNATIONAL 2015; 2015:758616. [PMID: 26266263 PMCID: PMC4523685 DOI: 10.1155/2015/758616] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 06/23/2015] [Accepted: 06/25/2015] [Indexed: 02/07/2023]
Abstract
The goal of this study is to investigate the feasibility of using CD81- (Cluster of Differentiation 81 protein-) targeted microparticles of iron oxide (CD81-MPIO) for magnetic resonance imaging (MRI) of the murine atherosclerosis. CD81-MPIO and IgG- (Immunoglobulin G-) MPIO were prepared by covalently conjugating, respectively, with anti-CD81 monoclonal and IgG antibodies to the surface of the tosyl activated MPIO. The relevant binding capability of the MPIO was examined by incubating them with murine bEnd.3 cells stimulated with phenazine methosulfate (PMS) and its effect in shortening T2 relaxation time was also examined. MRI in apolipoprotein E-deficient mice was studied in vivo. Our results show that CD81-MPIO, but not IgG-MPIO, can bind to the PMS-stimulated bEnd.3 cells. The T2 relaxation time was significantly shortened for stimulated bEnd.3 cells when compared with IgG-MPIO. In vivo MRI in apolipoprotein E-deficient mice showed highly conspicuous areas of low signal after CD81-MPIO injection. Quantitative analysis of the area of CD81-MPIO contrast effects showed 8.96- and 6.98-fold increase in comparison with IgG-MPIO or plain MPIO, respectively (P < 0.01). Histological assay confirmed the expression of CD81 and CD81-MPIO binding onto atherosclerotic lesions. In conclusion, CD81-MPIO allows molecular assessment of murine atherosclerotic lesions by magnetic resonance imaging.
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36
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Nörenberg D, Ebersberger HU, Diederichs G, Hamm B, Botnar RM, Makowski MR. Molecular magnetic resonance imaging of atherosclerotic vessel wall disease. Eur Radiol 2015; 26:910-20. [DOI: 10.1007/s00330-015-3881-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Revised: 04/27/2015] [Accepted: 06/08/2015] [Indexed: 11/29/2022]
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37
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Lee GY, Kim JH, Choi KY, Yoon HY, Kim K, Kwon IC, Choi K, Lee BH, Park JH, Kim IS. Hyaluronic acid nanoparticles for active targeting atherosclerosis. Biomaterials 2015; 53:341-8. [DOI: 10.1016/j.biomaterials.2015.02.089] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 02/13/2015] [Accepted: 02/19/2015] [Indexed: 02/02/2023]
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38
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Hannan PA, Khan JA, Iqbal Z, Ullah I, Rehman WU, Rehman M, Nasir F, Khan A, Ismail, Muhammad S, Hassan M. Simultaneous Determination of Endogenous Antioxidants and Malondialdehyde by RP-HPLC Coupled with Electrochemical Detector in Serum Samples. J LIQ CHROMATOGR R T 2015. [DOI: 10.1080/10826076.2015.1012522] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
| | | | - Zafar Iqbal
- Department of Pharmacy, University of Peshawar, Peshawar, Pakistan
| | - Irfan Ullah
- Department of Pharmacy, University of Peshawar, Peshawar, Pakistan
| | - Waheed Ur Rehman
- Department of Pharmacy, University of Peshawar, Peshawar, Pakistan
| | - Mehreen Rehman
- Department of Pharmacy, University of Peshawar, Peshawar, Pakistan
| | - Fazli Nasir
- Department of Pharmacy, University of Peshawar, Peshawar, Pakistan
| | - Abad Khan
- Department of Pharmacy, University of Swabi, Swabi, Pakistan
| | - Ismail
- Department of Pharmacy, University of Peshawar, Peshawar, Pakistan
| | - Salar Muhammad
- Department of Pharmacy, Abdul Wali Khan University Mardan, Mardan, Pakistan
| | - Muhammad Hassan
- Department of Pharmacy, University of Peshawar, Peshawar, Pakistan
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39
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Makris GC, Teng Z, Patterson AJ, Lin JM, Young V, Graves MJ, Gillard JH. Advances in MRI for the evaluation of carotid atherosclerosis. Br J Radiol 2015; 88:20140282. [PMID: 25826233 DOI: 10.1259/bjr.20140282] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Carotid artery atherosclerosis is an important source of mortality and morbidity in the Western world with significant socioeconomic implications. The quest for the early identification of the vulnerable carotid plaque is already in its third decade and traditional measures, such as the sonographic degree of stenosis, are not selective enough to distinguish those who would really benefit from a carotid endarterectomy. MRI of the carotid plaque enables the visualization of plaque composition and specific plaque components that have been linked to a higher risk of subsequent embolic events. Blood suppressed T1 and T2 weighted and proton density-weighted fast spin echo, gradient echo and time-of-flight sequences are typically used to quantify plaque components such as lipid-rich necrotic core, intraplaque haemorrhage, calcification and surface defects including erosion, disruption and ulceration. The purpose of this article is to review the most important recent advances in MRI technology to enable better diagnostic carotid imaging.
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Affiliation(s)
- G C Makris
- Department of Radiology, University of Cambridge, Cambridge, UK
| | - Z Teng
- Department of Radiology, University of Cambridge, Cambridge, UK
| | - A J Patterson
- Department of Radiology, University of Cambridge, Cambridge, UK
| | - J-M Lin
- Department of Radiology, University of Cambridge, Cambridge, UK
| | - V Young
- Department of Radiology, University of Cambridge, Cambridge, UK
| | - M J Graves
- Department of Radiology, University of Cambridge, Cambridge, UK
| | - J H Gillard
- Department of Radiology, University of Cambridge, Cambridge, UK
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40
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Particle generation, functionalization and sortase A–mediated modification with targeting of single-chain antibodies for diagnostic and therapeutic use. Nat Protoc 2014; 10:90-105. [DOI: 10.1038/nprot.2014.177] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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41
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Lavin B, Phinikaridou A, Henningsson M, Botnar RM. Current Development of Molecular Coronary Plaque Imaging using Magnetic Resonance Imaging towards Clinical Application. CURRENT CARDIOVASCULAR IMAGING REPORTS 2014. [DOI: 10.1007/s12410-014-9309-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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42
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Wang P, Ma T, Slipchenko MN, Liang S, Hui J, Shung KK, Roy S, Sturek M, Zhou Q, Chen Z, Cheng JX. High-speed intravascular photoacoustic imaging of lipid-laden atherosclerotic plaque enabled by a 2-kHz barium nitrite raman laser. Sci Rep 2014; 4:6889. [PMID: 25366991 PMCID: PMC4219167 DOI: 10.1038/srep06889] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Accepted: 10/14/2014] [Indexed: 11/09/2022] Open
Abstract
Lipid deposition inside the arterial wall is a key indicator of plaque vulnerability. An intravascular photoacoustic (IVPA) catheter is considered a promising device for quantifying the amount of lipid inside the arterial wall. Thus far, IVPA systems suffered from slow imaging speed (~50 s per frame) due to the lack of a suitable laser source for high-speed excitation of molecular overtone vibrations. Here, we report an improvement in IVPA imaging speed by two orders of magnitude, to 1.0 s per frame, enabled by a custom-built, 2-kHz master oscillator power amplifier (MOPA)-pumped, barium nitrite [Ba(NO3)2] Raman laser. This advancement narrows the gap in translating the IVPA technology to the clinical setting.
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Affiliation(s)
- Pu Wang
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, 47906, USA
| | - Teng Ma
- Department of Biomedical Engineering, NIH Ultrasonic Transducer Resource Center, University of Southern California, Los Angeles, California 90089, USA
| | - Mikhail N Slipchenko
- 1] Weldon School of Biomedical Engineering, Purdue University, West Lafayette, 47906, USA [2] Spectral Energy, LLC, Dayton, Ohio, 45431, USA
| | - Shanshan Liang
- 1] Department of Biomedical Engineering, University of California, Irvine, California 92697, USA [2] Beckman Laser Institute, University of California, Irvine, California 92612, USA and Edwards Lifesciences Center for Advanced Cardiovascular Technology, University of California, Irvine, California 92697, USA
| | - Jie Hui
- Physics Department, Purdue University, West Lafayette, 47906, USA
| | - K Kirk Shung
- Department of Biomedical Engineering, NIH Ultrasonic Transducer Resource Center, University of Southern California, Los Angeles, California 90089, USA
| | - Sukesh Roy
- Spectral Energy, LLC, Dayton, Ohio, 45431, USA
| | - Michael Sturek
- Department of Cellular &Integrative Physiology, Indiana University School of Medicine, Indianapolis, Indiana, 46202, USA
| | - Qifa Zhou
- Department of Biomedical Engineering, NIH Ultrasonic Transducer Resource Center, University of Southern California, Los Angeles, California 90089, USA
| | - Zhongping Chen
- Department of Biomedical Engineering, University of California, Irvine, California 92697, USA
| | - Ji-Xin Cheng
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, 47906, USA
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43
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Obermeyer AC, Capehart SL, Jarman JB, Francis MB. Multivalent viral capsids with internal cargo for fibrin imaging. PLoS One 2014; 9:e100678. [PMID: 24960118 PMCID: PMC4069081 DOI: 10.1371/journal.pone.0100678] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Accepted: 05/30/2014] [Indexed: 12/25/2022] Open
Abstract
Thrombosis is the cause of many cardiovascular syndromes and is a significant contributor to life-threatening diseases, such as myocardial infarction and stroke. Thrombus targeted imaging agents have the capability to provide molecular information about pathological clots, potentially improving detection, risk stratification, and therapy of thrombosis-related diseases. Nanocarriers are a promising platform for the development of molecular imaging agents as they can be modified to have external targeting ligands and internal functional cargo. In this work, we report the synthesis and use of chemically functionalized bacteriophage MS2 capsids as biomolecule-based nanoparticles for fibrin imaging. The capsids were modified using an oxidative coupling reaction, conjugating ∼90 copies of a fibrin targeting peptide to the exterior of each protein shell. The ability of the multivalent, targeted capsids to bind fibrin was first demonstrated by determining the impact on thrombin-mediated clot formation. The modified capsids out-performed the free peptides and were shown to inhibit clot formation at effective concentrations over ten-fold lower than the monomeric peptide alone. The installation of near-infrared fluorophores on the interior surface of the capsids enabled optical detection of binding to fibrin clots. The targeted capsids bound to fibrin, exhibiting higher signal-to-background than control, non-targeted MS2-based nanoagents. The in vitro assessment of the capsids suggests that fibrin-targeted MS2 capsids could be used as delivery agents to thrombi for diagnostic or therapeutic applications.
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Affiliation(s)
- Allie C. Obermeyer
- Department of Chemistry, University of California, Berkeley, California, United States of America
| | - Stacy L. Capehart
- Department of Chemistry, University of California, Berkeley, California, United States of America
| | - John B. Jarman
- Department of Chemistry, University of California, Berkeley, California, United States of America
| | - Matthew B. Francis
- Department of Chemistry, University of California, Berkeley, California, United States of America
- Materials Sciences Division, Lawrence Berkeley National Laboratories, Berkeley, California, United States of America
- * E-mail:
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44
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Ma J, Martin KH, Dayton PA, Jiang X. A preliminary engineering design of intravascular dual-frequency transducers for contrast-enhanced acoustic angiography and molecular imaging. IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL 2014; 61:870-80. [PMID: 24801226 PMCID: PMC4090360 DOI: 10.1109/tuffc.2014.6805699] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Current intravascular ultrasound (IVUS) probes are not optimized for contrast detection because of their design for high-frequency fundamental-mode imaging. However, data from transcutaneous contrast imaging suggests the possibility of utilizing contrast ultrasound for molecular imaging or vasa vasorum assessment to further elucidate atherosclerotic plaque deposition. This paper presents the design, fabrication, and characterization of a small-aperture (0.6 × 3 mm) IVUS probe optimized for high-frequency contrast imaging. The design utilizes a dual-frequency (6.5 MHz/30 MHz) transducer arrangement for exciting microbubbles at low frequencies (near their resonance) and detecting their broadband harmonics at high frequencies, minimizing detected tissue backscatter. The prototype probe is able to generate nonlinear microbubble response with more than 1.2 MPa of rarefractional pressure (mechanical index: 0.48) at 6.5 MHz, and is also able to detect microbubble response with a broadband receiving element (center frequency: 30 MHz, -6-dB fractional bandwidth: 58.6%). Nonlinear super-harmonics from microbubbles flowing through a 200-μm-diameter micro-tube were clearly detected with a signal-to-noise ratio higher than 12 dB. Preliminary phantom imaging at the fundamental frequency (30 MHz) and dual-frequency super-harmonic imaging results suggest the promise of small aperture, dual-frequency IVUS transducers for contrast-enhanced IVUS imaging.
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Affiliation(s)
- Jianguo Ma
- Department of Mechanical & Aerospace Engineering, North Carolina State University, Raleigh, NC
| | - K. Heath Martin
- Joint Department of Biomedical Engineering, University of North Carolina and North Carolina State University, Chapel Hill, NC
| | - Paul A. Dayton
- Joint Department of Biomedical Engineering, University of North Carolina and North Carolina State University, Chapel Hill, NC
| | - Xiaoning Jiang
- Department of Mechanical & Aerospace Engineering, North Carolina State University, Raleigh, NC
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45
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Bonnard T, Yang G, Petiet A, Ollivier V, Haddad O, Arnaud D, Louedec L, Bachelet-Violette L, Derkaoui SM, Letourneur D, Chauvierre C, Visage CL. Abdominal aortic aneurysms targeted by functionalized polysaccharide microparticles: a new tool for SPECT imaging. Am J Cancer Res 2014; 4:592-603. [PMID: 24723981 PMCID: PMC3982130 DOI: 10.7150/thno.7757] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Accepted: 12/16/2013] [Indexed: 02/02/2023] Open
Abstract
Aneurysm diagnostic is nowadays limited by the lack of technology that enables early detection and rupture risk prediction. New non invasive tools for molecular imaging are still required. In the present study, we present an innovative SPECT diagnostic tool for abdominal aortic aneurysm (AAA) produced from injectable polysaccharide microparticles radiolabeled with technetium 99m (99mTc) and functionalized with fucoidan, a sulfated polysaccharide with the ability to target P-Selectin. P-Selectin is a cell adhesion molecule expressed on activated endothelial cells and platelets which can be found in the thrombus of aneurysms, as well as in other vascular pathologies. Microparticles with a maximum hydrodynamic diameter of 4 µm were obtained by crosslinking the polysaccharides dextran and pullulan. They were functionalized with fucoidan. In vitro interactions with human activated platelets were assessed by flow cytometry that demonstrated a specific affinity of fucoidan functionalized microparticles for P-Selectin expressed by activated platelets. For in vivo AAA imaging, microparticles were radiolabeled with 99mTc and intravenously injected into healthy and AAA rats obtained by elastase perfusion through the aorta wall. Animals were scanned by SPECT imaging. A strong contrast enhancement located in the abdominal aorta of AAA rats was obtained, while no signal was obtained in healthy rats or in AAA rats after injection of non-functionalized control microparticles. Histological studies revealed that functionalized radiolabeled polysaccharide microparticles were localized in the AAA wall, in the same location where P-Selectin was expressed. These microparticles therefore constitute a promising SPECT imaging tool for AAA and potentially for other vascular diseases characterized by P-Selectin expression. Future work will focus on validating the efficiency of the microparticles to diagnose these other pathologies and the different stages of AAA. Incorporation of a therapeutic molecule is also considered.
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46
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The Great Migration: How MRI Replaces Traditional Imaging Techniques for the Characterization of Atherosclerosis. CURRENT RADIOLOGY REPORTS 2014. [DOI: 10.1007/s40134-013-0040-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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47
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Ala-Korpela M. Potential role of body fluid1H NMR metabonomics as a prognostic and diagnostic tool. Expert Rev Mol Diagn 2014; 7:761-73. [DOI: 10.1586/14737159.7.6.761] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Ardipradja K, Yeoh SD, Alt K, O'Keefe G, Rigopoulos A, Howells DW, Scott AM, Peter K, Ackerman U, Hagemeyer CE. Detection of activated platelets in a mouse model of carotid artery thrombosis with 18 F-labeled single-chain antibodies. Nucl Med Biol 2013; 41:229-37. [PMID: 24440583 DOI: 10.1016/j.nucmedbio.2013.12.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Revised: 11/14/2013] [Accepted: 12/07/2013] [Indexed: 11/29/2022]
Abstract
INTRODUCTION Activated platelets are key players in thrombosis and inflammation. We previously generated single-chain antibodies (scFv) against ligand-induced binding sites (LIBS) on the highly abundant platelet glycoprotein integrin receptor IIb/IIIa. The aim of this study was the construction and characterisation of a novel (18)F PET radiotracer based on this antibody. METHODS ScFv(anti-LIBS) and control antibody mut-scFv were reacted with N-succinimidyl-4-[(18)F]fluorobenzoate (S[(18)F]FB). Radiolabeled scFv was incubated with in vitro formed platelet clots and injected into mice with FeCl(3) induced thrombus in the left carotid artery. Clots were imaged in the PET scanner and amount of radioactivity measured using an ionization chamber and image analysis. Assessment of vessel injury as well as the biodistribution of the radiolabeled scFv was studied. RESULTS After incubation with increasing concentrations of (18)F-scFv(anti-LIBS) clots had retained significantly higher amounts of radioactivity compared to clots incubated with radiolabeled (18)F-mut-scFv (13.3 ± 3.8 vs. 3.6 ± 1 KBq, p < 0.05, n = 9, decay corrected). In the in vivo experiments we found an high uptake of the tracer in the injured vessel compared with the non-injured vessel, with 12.6 ± 4.7% injected dose per gram (ID/g) uptake in the injured vessel and 3.7 ± 0.9% ID/g in the non-injured vessel 5 minutes after injection (p < 0.05, n = 6). CONCLUSIONS Our results show that the novel antibody radiotracer (18)F-scFv(anti-LIBS) is useful for the sensitive detection of activated platelets and thrombosis. ADVANCES IN KNOWLEDGE AND IMPLICATIONS FOR PATIENT CARE We describe the first (18)F variant of a scFv(anti-LIBS) against activated platelets. This diagnostic agent could provide a powerful tool for the assessment of acute thrombosis and inflammation in patients in the future.
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Affiliation(s)
- Katie Ardipradja
- Vascular Biotechnology Laboratory, Baker IDI, Melbourne, Australia; Atherothrombosis and Vascular Biology Laboratory, Baker IDI, Melbourne, Australia; Departments of Nuclear Medicine and Centre for PET, Austin Hospital, Melbourne, Australia; Department of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, Australia
| | - Shinn Dee Yeoh
- Departments of Nuclear Medicine and Centre for PET, Austin Hospital, Melbourne, Australia
| | - Karen Alt
- Vascular Biotechnology Laboratory, Baker IDI, Melbourne, Australia; Atherothrombosis and Vascular Biology Laboratory, Baker IDI, Melbourne, Australia
| | - Graeme O'Keefe
- Departments of Nuclear Medicine and Centre for PET, Austin Hospital, Melbourne, Australia
| | - Angela Rigopoulos
- Ludwig Institute for Cancer Research, Austin Hospital, Melbourne, Australia
| | - David W Howells
- The Florey Institute of Neuroscience and Mental Health, Austin Hospital, Melbourne, Australia
| | - Andrew M Scott
- Departments of Nuclear Medicine and Centre for PET, Austin Hospital, Melbourne, Australia; Department of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, Australia; Ludwig Institute for Cancer Research, Austin Hospital, Melbourne, Australia
| | - Karlheinz Peter
- Atherothrombosis and Vascular Biology Laboratory, Baker IDI, Melbourne, Australia; Central Clinical School, Monash University, Melbourne, Australia
| | - Uwe Ackerman
- Departments of Nuclear Medicine and Centre for PET, Austin Hospital, Melbourne, Australia; Department of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, Australia; Ludwig Institute for Cancer Research, Austin Hospital, Melbourne, Australia
| | - Christoph E Hagemeyer
- Vascular Biotechnology Laboratory, Baker IDI, Melbourne, Australia; Central Clinical School, Monash University, Melbourne, Australia.
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Noguchi T, Kawasaki T, Tanaka A, Yasuda S, Goto Y, Ishihara M, Nishimura K, Miyamoto Y, Node K, Koga N. High-intensity signals in coronary plaques on noncontrast T1-weighted magnetic resonance imaging as a novel determinant of coronary events. J Am Coll Cardiol 2013; 63:989-99. [PMID: 24345595 DOI: 10.1016/j.jacc.2013.11.034] [Citation(s) in RCA: 126] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 11/08/2013] [Accepted: 11/26/2013] [Indexed: 01/08/2023]
Abstract
OBJECTIVES The aim of this study was to determine whether coronary high-intensity plaques (HIPs) visualized by noncontrast T1-weighted imaging can predict future coronary events. BACKGROUND Coronary HIPs are associated with characteristics of vulnerable plaques, including positive remodeling, lower Hounsfield units, and ultrasound attenuation. However, it remains unclear whether the presence of HIPs is associated with increased risk for coronary events. METHODS The signal intensity of coronary plaques was prospectively examined in 568 patients with suspected or known coronary artery disease (CAD) who underwent noncontrast T1-weighted imaging to determine the plaque-to-myocardium signal intensity ratio (PMR). RESULTS During the follow-up period (median 55 months), coronary events were observed in 55 patients. Receiver-operating characteristic curve analysis identified a PMR of 1.4 as the optimal cutoff for predicting prognosis. Multivariate Cox regression analysis identified the presence of plaques with PMRs ≥1.4 as the significant independent predictor of coronary events (hazard ratio: 3.96; 95% confidence interval: 1.92 to 8.17; p < 0.001) compared with the presence of CAD (hazard ratio: 3.56; 95% confidence interval: 1.76 to 7.20; p < 0.001) and other traditional risk factors. Among the 4 groups based on PMR cutoff and the presence of CAD, coronary event-free survival was lowest in the group with PMRs ≥1.4 and CAD and highest in the group with PMRs <1.4 but no CAD. Importantly, the group with PMRs ≥1.4 and no CAD had an intermediate rate of coronary events, similar to the group with PMRs <1.4 and CAD. CONCLUSIONS HIPs identified in a noninvasive, quantitative manner are significantly associated with coronary events and may thus represent a novel predictive factor.
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Affiliation(s)
- Teruo Noguchi
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan.
| | | | - Atsushi Tanaka
- Department of Cardiovascular Medicine, Saga University, Saga, Japan
| | - Satoshi Yasuda
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Yoichi Goto
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Masaharu Ishihara
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Kunihiro Nishimura
- Department of Preventive Medicine and Epidemiology, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Yoshihiro Miyamoto
- Department of Preventive Medicine and Epidemiology, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Koichi Node
- Department of Cardiovascular Medicine, Saga University, Saga, Japan
| | - Nobuhiko Koga
- Cardiovascular Center, Shin-Koga Hospital, Kurume, Japan
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Phinikaridou A, Andia ME, Lacerda S, Lorrio S, Makowski MR, Botnar RM. Molecular MRI of atherosclerosis. Molecules 2013; 18:14042-69. [PMID: 24232739 PMCID: PMC6270261 DOI: 10.3390/molecules181114042] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Revised: 10/29/2013] [Accepted: 10/29/2013] [Indexed: 11/22/2022] Open
Abstract
Despite advances in prevention, risk assessment and treatment, coronary artery disease (CAD) remains the leading cause of morbidity and mortality in Western countries. The lion's share is due to acute coronary syndromes (ACS), which are predominantly triggered by plaque rupture or erosion and subsequent coronary thrombosis. As the majority of vulnerable plaques does not cause a significant stenosis, due to expansive remodeling, and are rather defined by their composition and biological activity, detection of vulnerable plaques with x-ray angiography has shown little success. Non-invasive vulnerable plaque detection by identifying biological features that have been associated with plaque progression, destabilization and rupture may therefore be more appropriate and may allow earlier detection, more aggressive treatment and monitoring of treatment response. MR molecular imaging with target specific molecular probes has shown great promise for the noninvasive in vivo visualization of biological processes at the molecular and cellular level in animals and humans. Compared to other imaging modalities; MRI can provide excellent spatial resolution; high soft tissue contrast and has the ability to simultaneously image anatomy; function as well as biological tissue composition and activity.
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Affiliation(s)
- Alkystis Phinikaridou
- Division of Imaging Sciences and Biomedical Engineering, King’s College London, 4th Floor, Lambeth Wing, St Thomas’ Hospital, London SE1 7EH, UK; E-Mails: (A.P.); (M.E.A.); (S.L.); (S.L.); (M.R.M.)
| | - Marcelo E. Andia
- Division of Imaging Sciences and Biomedical Engineering, King’s College London, 4th Floor, Lambeth Wing, St Thomas’ Hospital, London SE1 7EH, UK; E-Mails: (A.P.); (M.E.A.); (S.L.); (S.L.); (M.R.M.)
- Radiology Department, School of Medicine, Pontificia Universidad Catolica de Chile, Santiago 8331150, Chile
| | - Sara Lacerda
- Division of Imaging Sciences and Biomedical Engineering, King’s College London, 4th Floor, Lambeth Wing, St Thomas’ Hospital, London SE1 7EH, UK; E-Mails: (A.P.); (M.E.A.); (S.L.); (S.L.); (M.R.M.)
| | - Silvia Lorrio
- Division of Imaging Sciences and Biomedical Engineering, King’s College London, 4th Floor, Lambeth Wing, St Thomas’ Hospital, London SE1 7EH, UK; E-Mails: (A.P.); (M.E.A.); (S.L.); (S.L.); (M.R.M.)
| | - Marcus R. Makowski
- Division of Imaging Sciences and Biomedical Engineering, King’s College London, 4th Floor, Lambeth Wing, St Thomas’ Hospital, London SE1 7EH, UK; E-Mails: (A.P.); (M.E.A.); (S.L.); (S.L.); (M.R.M.)
- Department of Radiology, Charite, Berlin 10117, Germany
| | - René M. Botnar
- Division of Imaging Sciences and Biomedical Engineering, King’s College London, 4th Floor, Lambeth Wing, St Thomas’ Hospital, London SE1 7EH, UK; E-Mails: (A.P.); (M.E.A.); (S.L.); (S.L.); (M.R.M.)
- Wellcome Trust and ESPRC Medical Engineering Center, King’s College London, London SE1 7EH, UK
- BHF Centre of Excellence, King’s College London, London SE1 7EH, UK
- NIHR Biomedical Research Centre, King’s College London, London SE1 7EH, UK
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