Name: in vivo near infrared fluorescence (nirf) intravascular molecular imaging of inflammatory plaque, a multimodal approach to imaging of atherosclerosis
Uploaded: 2011-08-04T12:00:00
Description: Watch this Scientific Journal Video about In vivo Near Infrared Fluorescence NIRF Intravascular Molecular Imaging of Inflammatory Plaque, a Multimodal Approach to Imaging of Atherosclerosis at JoVE.co

Поддержка эта работа была предоставлена ​​Национальным институтом здоровья грант R01 HL 108229, Американской ассоциации сердца Ученый развития грант № 0830352N, Медицинского института Говарда Хьюза развития карьеры Award, Бродвью Ventures, Седьмой рамочной программы Европейского сообщества (FP7/2007-2013 по гранту договор № 235689), и MGH Уильям Шрейер стипендий.

В модели животных онлайне: Поколение экспериментальной Атеросклероз аортоподвздошный 1) Базовый Ангиография и воздушных шаров Денудация <ol><li> До получения базовых ангиографии и воздушный шар денудации, Новой Зеландии белый кролик питается высокий уровень хол...

<ol>
	<li>Andersson, J., Libby, P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Adaptive+immunity+and+atherosclerosis.">Adaptive immunity and atherosclerosis.</a> Clin Immunol. 134, 33-46 (2010).</li><li>Calfon, M. A., Vinegoni, C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Intravascular+near-infrared+fluorescence+molecular+imaging+of+atherosclerosis:+toward+coronary+arterial+visualization+of+biologically+high-risk+plaques.">Intravascular near-infrared fluorescence molecular imaging of atherosclerosis: toward coronary arterial visualization of biologically high-risk plaques.</a> Journal of Biomedical Optics. 15, 011107-011107 (2010).</li><li>Chen, J., Tung, C. -. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=In+Vivo+Imaging+of+Proteolytic+Activity+in+Atherosclerosis.">In Vivo Imaging of Proteolytic Activity in Atherosclerosis.</a> Circulation. 105, 2766-2771 (2002).</li><li>Jaffer, F. A., Libby, P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Molecular+Imaging+of+Cardiovascular+Disease.">Molecular Imaging of Cardiovascular Disease.</a> Circulation. 116, 1052-1061 (2007).</li><li>Jaffer, F. A., Libby, P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Optical+and+Multimodality+Molecular+Imaging:+Insights+Into+Atherosclerosis.">Optical and Multimodality Molecular Imaging: Insights Into Atherosclerosis.</a> Arterioscler Thromb Vasc Biol. 29, 1017-1024 (2009).</li><li>Jaffer, F. A., Vinegoni, C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Real-Time+Catheter+Molecular+Sensing+of+Inflammation+in+Proteolytically+Active+Atherosclerosis.">Real-Time Catheter Molecular Sensing of Inflammation in Proteolytically Active Atherosclerosis.</a> Circulation. 118, 1802-1809 (2008).</li><li>Kim, D. -. E., Kim, J. -. Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Protease+Imaging+of+Human+Atheromata+Captures+Molecular+Information+of+Atherosclerosis,+Complementing+Anatomic+Imaging.">Protease Imaging of Human Atheromata Captures Molecular Information of Atherosclerosis, Complementing Anatomic Imaging.</a> Arterioscler Thromb Vasc Biol. 30, 449-456 (2010).</li><li>Libby, P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Inflammation+in+atherosclerosis.">Inflammation in atherosclerosis.</a> Nature. 420, 868-874 (2002).</li><li>Naghavi, M., Libby, P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=From+Vulnerable+Plaque+to+Vulnerable+Patient:+A+Call+for+New+Definitions+and+Risk+Assessment+Strategies:+Part+I.">From Vulnerable Plaque to Vulnerable Patient: A Call for New Definitions and Risk Assessment Strategies: Part I.</a> Circulation. 108, 1664-1672 (2003).</li><li>Weissleder, R., Tung, C. -. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=In+vivo+imaging+of+tumors+with+protease-activated+near-infrared+fluorescent+probes.">In vivo imaging of tumors with protease-activated near-infrared fluorescent probes.</a> Nat Biotech. 17, 375-375 (1999).</li><li>Razansky, R. N., Rosenthal, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Near-infrared+fluorescence+catheter+system+for+two-dimensional+intravascular+imaging+in+vivo.">Near-infrared fluorescence catheter system for two-dimensional intravascular imaging in vivo.</a> Optics Express. 18, 11372-11381 (2010).</li><li>Jaffer, F. A., Calfon, M. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Two-Dimensional+Intravascular+Near-Infrared+Fluorescence+Molecular+Imaging+of+Inflammation+in+Atherosclerosis+and+Stent-Induced+Vascular+Injury.">Two-Dimensional Intravascular Near-Infrared Fluorescence Molecular Imaging of Inflammation in Atherosclerosis and Stent-Induced Vascular Injury.</a> Journal of the American College of Cardiology. 57, 2516-2526 (2011).</li></ol>

Воспаление высокого риска и уязвимых бляшек, вероятно, ответственны за большинство инфарктов миокарда. Выявления таких бляшек до появления симптомов имеет важное клиническое значение как в прогнозировании исходов и руководящие медикаментозной терапии. Обычные коронарных артерий фо...

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in vivo near infrared fluorescence (nirf) intravascular molecular imaging of inflammatory plaque, a multimodal approach to imaging of atherosclerosis

The vascular response to injury is a well-orchestrated inflammatory response triggered by the accumulation of macrophages within the vessel wall leading to an accumulation of lipid-laden intra-luminal plaque, smooth muscle cell proliferation and progressive narrowing of the vessel lumen. The formation of such vulnerable plaques prone to rupture underlies the majority of cases of acute myocardial infarction. The complex molecular and cellular inflammatory cascade is orchestrated by the recruitment of T lymphocytes and macrophages and their paracrine effects on endothelial and smooth muscle cells.1
Molecular imaging in atherosclerosis has evolved into an important clinical and research tool that allows in vivo visualization of inflammation and other biological processes. Several recent examples demonstrate the ability to detect high-risk plaques in patients, and assess the effects of pharmacotherapeutics in atherosclerosis.4 While a number of molecular imaging approaches (in particular MRI and PET) can image biological aspects of large vessels such as the carotid arteries, scant options exist for imaging of coronary arteries.2 The advent of high-resolution optical imaging strategies, in particular near-infrared fluorescence (NIRF), coupled with activatable fluorescent probes, have enhanced sensitivity and led to the development of new intravascular strategies to improve biological imaging of human coronary atherosclerosis.
Near infrared fluorescence (NIRF) molecular imaging utilizes excitation light with a defined band width (650-900 nm) as a source of photons that, when delivered to an optical contrast agent or fluorescent probe, emits fluorescence in the NIR window that can be detected using an appropriate emission filter and a high sensitivity charge-coupled camera. As opposed to visible light, NIR light penetrates deeply into tissue, is markedly less attenuated by endogenous photon absorbers such as hemoglobin, lipid and water, and enables high target-to-background ratios due to reduced autofluorescence in the NIR window. Imaging within the NIR 'window' can substantially improve the potential for in vivo imaging.2,5
Inflammatory cysteine proteases have been well studied using activatable NIRF probes10, and play important roles in atherogenesis. Via degradation of the extracellular matrix, cysteine proteases contribute importantly to the progression and complications of atherosclerosis8. In particular, the cysteine protease, cathepsin B, is highly expressed and colocalizes with macrophages in experimental murine, rabbit, and human atheromata.3,6,7 In addition, cathepsin B activity in plaques can be sensed in vivo utilizing a previously described 1-D intravascular near-infrared fluorescence technology6, in conjunction with an injectable nanosensor agent that consists of a poly-lysine polymer backbone derivatized with multiple NIR fluorochromes (VM110/Prosense750, ex/em 750/780nm, VisEn Medical, Woburn, MA) that results in strong intramolecular quenching at baseline.10 Following targeted enzymatic cleavage by cysteine proteases such as cathepsin B (known to colocalize with plaque macrophages), the fluorochromes separate, resulting in substantial amplification of the NIRF signal. Intravascular detection of NIR fluorescence signal by the utilized novel 2D intravascular NIRF catheter now enables high-resolution, geometrically accurate in vivo detection of cathepsin B activity in inflamed plaque.
In vivo molecular imaging of atherosclerosis using catheter-based 2D NIRF imaging, as opposed to a prior 1-D spectroscopic approach,6 is a novel and promising tool that utilizes augmented protease activity in macrophage-rich plaque to detect vascular inflammation.11,12 The following research protocol describes the use of an intravascular 2-dimensional NIRF catheter to image and characterize plaque structure utilizing key aspects of plaque biology. It is a translatable platform that when integrated with existing clinical imaging technologies including angiography and intravascular ultrasound (IVUS), offers a unique and novel integrated multimodal molecular imaging technique that distinguishes inflammatory atheromata, and allows detection of intravascular NIRF signals in human-sized coronary arteries.

Watch this Scientific Journal Video about In vivo Near Infrared Fluorescence NIRF Intravascular Molecular Imaging of Inflammatory Plaque, a Multimodal Approach to Imaging of Atherosclerosis at JoVE.co

In vivo Near Infrared Fluorescence NIRF Intravascular Molecular Imaging of Inflammatory Plaque, a Multimodal Approach to Imaging of Atherosclerosis

Мы подробно нового ближней инфракрасной флуоресценции (NIRF) катетер для 2-мерных внутрисосудистого молекулярной визуализации налета биологии<em&gt; В естественных условиях</em&gt;. Катетер NIRF может визуализировать ключевые биологические процессы, такие как воспаление, сообщая о наличии зубного налета-заядлый активируемые и целевых флуорохромами НДК. Катетер использует клинические требования и силовой, и предназначена для применения в человеческой коронарных артерий. Следующие исследования исследование описывает смешанные стратегии визуализации, которая использует новые<em&gt; В естественных условиях</em&gt; Внутрисосудистого NIRF катетер, чтобы изображение и количественно воспалительные бляшки в протеолитически активной воспаленными atheromata кролика.

В естественных условиях ближней инфракрасной флуоресценции (NIRF) внутрисосудистого молекулярной визуализации воспалительных Зубной налет, мультимодальный подход к изображений атеросклероза

The vascular response to injury is a well-orchestrated inflammatory response triggered by the accumulation of macrophages within the vessel wall leading ...

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In vivo Near Infrared Fluorescence (NIRF) Intravascular Molecular Imaging of Inflammatory Plaque, a Multimodal Approach to Imaging of Atherosclerosis

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