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cardiovascular molecular imaging

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https://www.readbyqxmd.com/read/29449411/molecular-imaging-in-drug-discovery-and-development
#1
Jonathan R Lindner, Jeanne Link
Noninvasive imaging has played an increasing role in the process of cardiovascular drug development. This review focuses specifically on the use of molecular imaging, which has been increasingly applied to improve and accelerate certain preclinical steps in drug development, including the identification of appropriate therapeutic targets, evaluation of on-target and off-target effects of candidate therapies, assessment of dose response, and the evaluation of drug or biological biodistribution and pharmacodynamics...
February 2018: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29431119/hypermetabolic-macrophages-in-rheumatoid-arthritis-and-coronary-artery-disease-due-to-glycogen-synthase-kinase-3b-inactivation
#2
Markus Zeisbrich, Rolando E Yanes, Hui Zhang, Ryu Watanabe, Yinyin Li, Lukas Brosig, Jison Hong, Barbara B Wallis, John C Giacomini, Themistocles L Assimes, Jörg J Goronzy, Cornelia M Weyand
OBJECTIVES: Accelerated atherosclerotic disease typically complicates rheumatoid arthritis (RA), leading to premature cardiovascular death. Inflammatory macrophages are key effector cells in both rheumatoid synovitis and the plaques of coronary artery disease (CAD). Whether both diseases share macrophage-dependent pathogenic mechanisms is unknown. METHODS: Patients with RA or CAD (at least one myocardial infarction) and healthy age-matched controls were recruited into the study...
February 3, 2018: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/29370377/big-data-from-electronic-health-records-for-early-and-late-translational-cardiovascular-research-challenges-and-potential
#3
Harry Hemingway, Folkert W Asselbergs, John Danesh, Richard Dobson, Nikolaos Maniadakis, Aldo Maggioni, Ghislaine Jm van Thiel, Maureen Cronin, Gunnar Brobert, Panos Vardas, Stefan D Anker, Diederick E Grobbee, Spiros Denaxas
Aims: Cohorts of millions of people's health records, whole genome sequencing, imaging, sensor, societal and publicly available data present a rapidly expanding digital trace of health. We aimed to critically review, for the first time, the challenges and potential of big data across early and late stages of translational cardiovascular disease research. Methods and results: We sought exemplars based on literature reviews and expertise across the BigData@Heart Consortium...
August 29, 2017: European Heart Journal
https://www.readbyqxmd.com/read/29361487/novel-approach-for-in%C3%A2-vivo-detection-of-vulnerable-coronary-plaques-using-molecular-3-t-cmr-imaging-with-an-albumin-binding-probe
#4
Leif-Christopher Engel, Ulf Landmesser, Kevin Gigengack, Thomas Wurster, Constantina Manes, Georg Girke, Milosz Jaguszewski, Carsten Skurk, David M Leistner, Alexander Lauten, Andreas Schuster, Bernd Hamm, Rene M Botnar, Marcus R Makowski, Boris Bigalke
OBJECTIVES: This study sought to investigate the potential of the noninvasive albumin-binding probe gadofosveset-enhanced cardiac magnetic resonance (GE-CMR) for detection of coronary plaques that can cause acute coronary syndromes (ACS). BACKGROUND: ACS are frequently caused by rupture or erosion of coronary plaques that initially do not cause hemodynamically significant stenosis and are therefore not detected by invasive x-ray coronary angiography (XCA). METHODS: A total of 25 patients with ACS or symptoms of stable coronary artery disease underwent GE-CMR, clinically indicated XCA, and optical coherence tomography (OCT) within 24 h...
January 12, 2018: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29361478/targeted-imaging-for-cell-death-in-cardiovascular-disorders
#5
REVIEW
Aditya Shekhar, Peter Heeger, Chris Reutelingsperger, Eloisa Arbustini, Navneet Narula, Leonard Hofstra, Jeroen J Bax, Jagat Narula
Cell death is desirable in cancer cells and undesirable in organs with limited regenerative potential, like the heart. Cell death comes in many forms, but only apoptosis and to a lesser degree necrosis is currently relevant to the clinical imager. Noninvasive imaging of cell death is an attractive option to understand pathophysiology, track disease activity, and evaluate response to intervention. Apoptosis seems to be the most promising target for imaging cell death, because it could be reversible and might be modulated with interventions...
January 12, 2018: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29236892/joinville-stroke-biobank-study-protocol-and-first-year-s-results
#6
Leslie Ecker Ferreira, Paulo Henrique Condeixa de França, Vivian Nagel, Vanessa Venancio, Juliana Safanelli, Felipe Ibiapina Dos Reis, Luis Furtado, Rui Kleber Martins, Gustavo Weiss, Elder Oda, Iscia Lopes-Cendes, Octavio Pontes-Neto, Norberto Luiz Cabral
Aiming to contribute to studies that use detailed clinical and genomic information of biobanks, we present the initial results of the first Latin American Stroke Biobank. METHODS: Blood samples were collected from patients included in the Joinville Stroke Registry and four Brazilian cities. Demographic socio-economic data, cardiovascular risk factors, Causative Classification System for Ischemic Stroke, Trial of Org 10172 in Acute Stroke Treatment and National Institutes of Health scores, functional stroke status (modified Rankin) and brain images were recorded...
December 2017: Arquivos de Neuro-psiquiatria
https://www.readbyqxmd.com/read/29223438/-bringing-on-the-light-in-a-complex-clinical-scenario-optical-coherence-tomography-guided-discontinuation-of-antiplatelet-therapy-in-cancer-patients-with-coronary-artery-disease-protect-oct-registry
#7
Cezar A Iliescu, Mehmet Cilingiroglu, Dana E Giza, Oscar Rosales, Jake Lebeau, Israel Guerrero-Mantilla, Juan Lopez-Mattei, Juhee Song, Guillherme Silva, Pranav Loyalka, Andre R M Paixao, Syed Wamique Yusuf, Emerson Perin, Vernon H Anderson, Konstantinos Marmagkiolis
BACKGROUND: Cancer patients with recently placed drug-eluting stents (DESs) often require premature dual antiplatelet therapy (DAPT) discontinuation for cancer-related procedures. Optical coherence tomography (OCT) can identify risk factors for stent thrombosis such as stent malapposition, incomplete strut coverage and in-stent restenosis and may help guide discontinuation of DAPT. METHODS: We conducted a single-center prospective study in cancer patients with recently placed (1-12 months) DES who required premature DAPT discontinuation...
December 2017: American Heart Journal
https://www.readbyqxmd.com/read/29222786/nerve-growth-factor-induced-angiogenesis-1-endothelial-cell-tube-formation-assay
#8
Philip Lazarovici, Adi Lahiani, Galit Gincberg, Dikla Haham, Arnon Fluksman, Ofra Benny, Cezary Marcinkiewicz, Peter I Lelkes
Nerve growth factor (NGF) is a neurotrophin promoting survival, proliferation, differentiation, and neuroprotection in the embryonal and adult nervous system. NGF also induces angiogenic effects in the cardiovascular system, which may be beneficial in engineering new blood vessels and for developing novel anti-angiogenesis therapies for cancer. Angiogenesis is a cellular process characterized by a number of events, including endothelial cell migration, invasion, and assembly into capillaries. In vitro endothelial tube formation assays are performed using primary human umbilical vein endothelial cells, human aortic endothelial cells, and other human or rodent primary endothelial cells isolated from the vasculature of both tumors and normal tissues...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29222120/targeting-cardiovascular-implant-infection-multimodality-and-molecular-imaging
#9
REVIEW
Jan M Sohns, Udo Bavendiek, Tobias L Ross, Frank M Bengel
Owing to their success in clinical practice, the prevalence of cardiovascular implants is continuously increasing. Implant infection is a relevant complication but remains a diagnostic challenge because echocardiography as a first-line test may be limited. Accordingly, a multimodality approach is increasingly used for diagnostic workup and supported by recent guidelines. As reviewed here, computed tomography and nuclear imaging provide incremental diagnostic value and may be combined in a single hybrid imaging session using positron emission tomography/computed tomography or single photon emission computed tomography/computed tomography...
December 2017: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29203849/an-integrated-brain-behavior-model-for-working-memory
#10
D A Moser, G E Doucet, A Ing, D Dima, G Schumann, R M Bilder, S Frangou
Working memory (WM) is a central construct in cognitive neuroscience because it comprises mechanisms of active information maintenance and cognitive control that underpin most complex cognitive behavior. Individual variation in WM has been associated with multiple behavioral and health features including demographic characteristics, cognitive and physical traits and lifestyle choices. In this context, we used sparse canonical correlation analyses (sCCAs) to determine the covariation between brain imaging metrics of WM-network activation and connectivity and nonimaging measures relating to sensorimotor processing, affective and nonaffective cognition, mental health and personality, physical health and lifestyle choices derived from 823 healthy participants derived from the Human Connectome Project...
December 5, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/29191926/molecular-ultrasound-imaging-of-junctional-adhesion-molecule-a-depicts-acute-alterations-in-blood-flow-and-early-endothelial-dysregulation
#11
Adelina Curaj, Zhuojun Wu, Anne Rix, Oliver Gresch, Marieke Sternkopf, Setareh Alampour-Rajabi, Twan Lammers, Marc van Zandvoort, Christian Weber, Rory R Koenen, Elisa A Liehn, Fabian Kiessling
OBJECTIVE: The junctional adhesion molecule A (JAM-A) is physiologically located in interendothelial tight junctions and focally redistributes to the luminal surface of blood vessels under abnormal shear and flow conditions accompanying atherosclerotic lesion development. Therefore, JAM-A was evaluated as a target for molecularly targeted ultrasound imaging of transient endothelial dysfunction under acute blood flow variations. APPROACH AND RESULTS: Flow-dependent endothelial dysfunction was induced in apolipoprotein E-deficient mice (n=43) by carotid partial ligation...
January 2018: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/29158839/characterization-of-cardiac-dynamics-in-an-acute-myocardial-infarction-model-by-four-dimensional-optoacoustic-and-magnetic-resonance-imaging
#12
Hsiao-Chun Amy Lin, Xosé Luís Déan-Ben, Ivana Ivankovic, Melanie A Kimm, Katja Kosanke, Helena Haas, Reinhard Meier, Fabian Lohöfer, Moritz Wildgruber, Daniel Razansky
Extraction of murine cardiac functional parameters on a beat-by-beat basis is limited with the existing imaging modalities due to insufficient three-dimensional temporal resolution. Faster volumetric imaging methods enabling in vivo characterization of functional parameters are poised to advance cardiovascular research and provide a better understanding of the mechanisms underlying cardiac diseases. We present a new approach based on analyzing contrast-enhanced optoacoustic (OA) images acquired at high volumetric frame rate without using cardiac gating or other approaches for motion correction...
2017: Theranostics
https://www.readbyqxmd.com/read/29119374/review-of-cardiovascular-imaging-in-the-journal-of-nuclear-cardiology-2017-part-1-of-2-positron-emission-tomography-computed-tomography-and-magnetic-resonance
#13
Wael A AlJaroudi, Fadi G Hage
Several original articles and editorials have been published in the Journal of Nuclear Cardiology in 2017. It has become a tradition at the beginning of each year to summarize some of these key articles in 2 sister reviews. In this first part one, we will discuss some of the progress made in the field of heart failure (cardio-oncology, myocardial blood flow, viability, dyssynchrony, and risk stratification), inflammation, molecular and hybrid imaging using advancement in positron emission tomography, computed tomography, and magnetic resonance imaging...
November 8, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29114179/tspo-pet-imaging-from-microglial-activation-to-peripheral-sterile-inflammatory-diseases
#14
REVIEW
Bérenger Largeau, Anne-Claire Dupont, Denis Guilloteau, Maria-João Santiago-Ribeiro, Nicolas Arlicot
Peripheral sterile inflammatory diseases (PSIDs) are a heterogeneous group of disorders that gathers several chronic insults involving the cardiovascular, respiratory, gastrointestinal, or musculoskeletal system and wherein inflammation is the cornerstone of the pathophysiology. In PSID, timely characterization and localization of inflammatory foci are crucial for an adequate care for patients. In brain diseases, in vivo positron emission tomography (PET) exploration of inflammation has matured over the last 20 years, through the development of radiopharmaceuticals targeting the translocator protein-18 kDa (TSPO) as molecular biomarkers of activated microglia...
2017: Contrast Media & Molecular Imaging
https://www.readbyqxmd.com/read/29089763/a-review-of-molecular-imaging-of-atherosclerosis-and-the-potential-application-of-dendrimer-in-imaging-of-plaque
#15
REVIEW
Gulinigaer Anwaier, Cong Chen, Yini Cao, Rong Qi
Despite the fact that technological advancements have been made in diagnosis and treatment, cardiovascular diseases (CVDs) remain the leading cause of mortality and morbidity worldwide. Early detection of atherosclerosis (AS), especially vulnerable plaques, plays a crucial role in the prevention of acute coronary syndrome (ACS). Targeting the critical cytokines and molecules that are upregulated during the biological process of AS by in vivo molecular imaging has been widely used in plaque imaging. With their three-dimensional architecture, composition, and abundant terminal functional groups, dendrimers provide a platform for multitargeting and multimodal imaging...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29022256/the-effects-of-exercise-on-cardiovascular-biomarkers-new-insights-recent-data-and-applications
#16
Lin Che, Dong Li
The benefit of regular exercise or physical activity with appropriate intensity on improving cardiopulmonary function and endurance has long been accepted with less controversy. The challenge remains, however, quantitatively evaluate the effect of exercise on cardiovascular health due in part to the amount and intensity of exercise varies widely plus lack of effective, robust and efficient biomarker evaluation systems. Better evaluating the overall function of biomarker and validate biomarkers utility in cardiovascular health should improve the evidence regarding the benefit or the effect of exercise or physical activity on cardiovascular health, in turn increasing the efficiency of the biomarker on individuals with mild to moderate cardiovascular risk...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28916148/chemokine-receptor-directed-imaging-and-therapy
#17
REVIEW
Andreas K Buck, Antje Stolzenburg, Heribert Hänscheid, Andreas Schirbel, Katharina Lückerath, Margret Schottelius, Hans-Jürgen Wester, Constantin Lapa
The C-X-C chemokine receptor 4 (CXCR4) and its natural ligand CXCL12 are key factors in the process of cell migration, homing of hematopoietic stem cells to the bone marrow, and represent important mediators of angiogenesis and cell proliferation. The CXCR4/CXCL12 interplay can be disrupted by CXCR4 antagonists such as Plerixafor which are already in daily clinical use, i.e. for mobilization and subsequent harvesting of hematopoietic progenitor cells and stem cell transplantation. In a pathological condition, involvement in the process of metastasis and homing of cancer cells to a protective niche has been described, making CXCR4 an attractive target for imaging and treatment of malignant diseases...
November 1, 2017: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/28893911/molecular-and-functional-characterization-of-the-endothelial-atp-sensitive-potassium-channel
#18
Qadeer Aziz, Yiwen Li, Naomi Anderson, Leona Ojake, Elena Tsisanova, Andrew Tinker
ATP-sensitive potassium (KATP) channels are widely expressed in the cardiovascular system, where they regulate a range of biological activities by linking cellular metabolism with membrane excitability. KATP channels in vascular smooth muscle have a well-defined role in regulating vascular tone. KATP channels are also thought to be expressed in vascular endothelial cells, but their presence and function in this context are less clear. As a result, we aimed to investigate the molecular composition and physiological role of endothelial KATP channels...
October 27, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28881270/molecular-and-clinical-characterization-of-a-series-of-patients-with-childhood-onset-lysosomal-acid-lipase-deficiency-retrospective-investigations-follow-up-and-detection-of-two-novel-lipa-pathogenic-variants
#19
Livia Pisciotta, Giulia Tozzi, Lorena Travaglini, Roberta Taurisano, Tiziano Lucchi, Giuseppe Indolfi, Francesco Papadia, Maja Di Rocco, Lorenzo D'Antiga, Patricia Crock, Komal Vora, Scott Nightingale, Helen Michelakakis, Anastasia Garoufi, Lilia Lykopoulou, Stefano Bertolini, Sebastiano Calandra
BACKGROUND AND AIMS: Childhood/Adult-onset Lysosomal Acid Lipase Deficiency (LAL-D) is a recessive disorder due to loss of function variants of LAL, the enzyme which hydrolyses cholesteryl esters, derived from internalized apoB containing lipoproteins. The disease is characterized by multi-organ involvement including the liver, spleen, intestine and cardiovascular system. The aim of this study was the clinical and molecular characterization of 14 (13 unrelated) previously unreported patients with childhood-onset LAL-D...
October 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28875946/pva-dextran-hydrogel-patches-as-delivery-system-of-antioxidant-astaxanthin-a-cardiovascular-approach
#20
Marisol Zuluaga, Giulia Gregnanin, Claudia Cencetti, Chiara Di Meo, Virginie Gueguen, Didier Letourneur, Anne Meddahi-Pellé, Graciela Pavon-Djavid, Pietro Matricardi
After myocardial infarction, the heart's mechanical properties and its intrinsic capability to recover are compromised. To improve this recovery, several groups have developed cardiac patches based on different biomaterials strategies. Here, we developed polyvinylalcohol/dextran (PVA/Dex) elastic hydrogel patches, obtained through the freeze thawing (FT) process, with the aim to deliver locally a potent natural antioxidant molecule, astaxanthin, and to assist the heart's response against the generated myofibril stress...
September 6, 2017: Biomedical Materials
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