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Dutta S, Kumar P, Yadav S, Sharma RD, Shivaprasad P, Vimaleswaran KS, Srivastava A, Sharma RK. Accelerating innovations in C H activation/functionalization through intricately designed magnetic nanomaterials: From genesis to applicability in liquid/regio/photo catalysis. CATAL COMMUN 2023. [DOI: 10.1016/j.catcom.2023.106615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
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Magnetic nanoparticles-based systems for multifaceted biomedical applications. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Monteserín M, Larumbe S, Martínez AV, Burgui S, Francisco Martín L. Recent Advances in the Development of Magnetic Nanoparticles for Biomedical Applications. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2021; 21:2705-2741. [PMID: 33653440 DOI: 10.1166/jnn.2021.19062] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The unique properties of magnetic nanoparticles have led them to be considered materials with significant potential in the biomedical field. Nanometric size, high surface-area ratio, ability to function at molecular level, exceptional magnetic and physicochemical properties, and more importantly, the relatively easy tailoring of all these properties to the specific requirements of the different biomedical applications, are some of the key factors of their success. In this paper, we will provide an overview of the state of the art of different aspects of magnetic nanoparticles, specially focusing on their use in biomedicine. We will explore their magnetic properties, synthetic methods and surface modifications, as well as their most significative physicochemical properties and their impact on the in vivo behaviour of these particles. Furthermore, we will provide a background on different applications of magnetic nanoparticles in biomedicine, such as magnetic drug targeting, magnetic hyperthermia, imaging contrast agents or theranostics. Besides, current limitations and challenges of these materials, as well as their future prospects in the biomedical field will be discussed.
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Affiliation(s)
- Maria Monteserín
- Centre of Advanced Surface Engineering and Advanced Materials, Asociación de la Industria Navarra, Ctra. Pamplona, s/n, Edificio AIN, C.P. 31191, Cordovilla, Navarra (Spain)
| | - Silvia Larumbe
- Centre of Advanced Surface Engineering and Advanced Materials, Asociación de la Industria Navarra, Ctra. Pamplona, s/n, Edificio AIN, C.P. 31191, Cordovilla, Navarra (Spain)
| | - Alejandro V Martínez
- Centre of Advanced Surface Engineering and Advanced Materials, Asociación de la Industria Navarra, Ctra. Pamplona, s/n, Edificio AIN, C.P. 31191, Cordovilla, Navarra (Spain)
| | - Saioa Burgui
- Centre of Advanced Surface Engineering and Advanced Materials, Asociación de la Industria Navarra, Ctra. Pamplona, s/n, Edificio AIN, C.P. 31191, Cordovilla, Navarra (Spain)
| | - L Francisco Martín
- Centre of Advanced Surface Engineering and Advanced Materials, Asociación de la Industria Navarra, Ctra. Pamplona, s/n, Edificio AIN, C.P. 31191, Cordovilla, Navarra (Spain)
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Chandy M, Wu JC. Molecular Imaging of Stem Cell Therapy in Ischemic Cardiomyopathy. Mol Imaging 2021. [DOI: 10.1016/b978-0-12-816386-3.00065-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Uca YO, Hallmann D, Hesse B, Seim C, Stolzenburg N, Pietsch H, Schnorr J, Taupitz M. Microdistribution of Magnetic Resonance Imaging Contrast Agents in Atherosclerotic Plaques Determined by LA-ICP-MS and SR-μXRF Imaging. Mol Imaging Biol 2020; 23:382-393. [PMID: 33289060 PMCID: PMC8099766 DOI: 10.1007/s11307-020-01563-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 10/29/2020] [Accepted: 11/04/2020] [Indexed: 01/12/2023]
Abstract
Purpose Contrast-enhanced magnetic resonance imaging (MRI) has the potential to replace angiographic evaluation of atherosclerosis. While studies have investigated contrast agent (CA) uptake in atherosclerotic plaques, exact CA spatial distribution on a microscale is elusive. The purpose of this study was to investigate the microdistribution of gadolinium (Gd)- and iron (Fe) oxide-based CA in atherosclerotic plaques of New Zealand White rabbits. Procedures The study was performed as a post hoc analysis of archived tissue specimens obtained in a previous in vivo MRI study conducted to investigate signal changes induced by very small superparamagnetic iron oxide nanoparticles (VSOP) and Gd-BOPTA. For analytical discrimination from endogenous Fe, VSOP were doped with europium (Eu) resulting in Eu-VSOP. Formalin-fixed arterial specimens were cut into 5-μm serial sections and analyzed by immunohistochemistry (IHC: Movat’s pentachrome, von Kossa, and Alcian blue (pH 1.0) staining, anti-smooth muscle cell actin (anti-SMA), and anti-rabbit macrophage (anti-RAM-11) immunostaining) and elemental microscopy with laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) and synchrotron radiation μX-ray fluorescence (SR-μXRF) spectroscopy. Elemental distribution maps of Fe, Eu, Gd, sulfur (S), phosphorus (P), and calcium (Ca) were investigated. Results IHC characterized atherosclerotic plaque pathomorphology. Elemental microscopy showed S distribution to match the anatomy of arterial vessel wall layers, while P distribution corresponded well with cellular areas. LA-ICP-MS revealed Gd and Fe with a limit of detection of ~ 0.1 nmol/g and ~ 100 nmol/g, respectively. Eu-positive signal identified VSOP presence in the vessel wall and allowed the comparison of Eu-VSOP and endogenous Fe distribution in tissue sections. Extracellular matrix material correlated with Eu signal intensity, Fe concentration, and maximum Gd concentration. Eu-VSOP were confined to endothelium in early lesions but accumulated in cellular areas in advanced plaques. Gd distribution was homogeneous in healthy arteries but inhomogeneous in early and advanced plaques. SR-μXRF scans at 0.5 μm resolution revealed Gd hotspots with increased P and Ca concentrations at the intimomedial interface, and a size distribution ranging from a few micrometers to submicrometers. Conclusions Eu-VSOP and Gd have distinct spatial distributions in atherosclerotic plaques. While Eu-VSOP distribution is more cell-associated and might be used to monitor atherosclerotic plaque progression, Gd distribution indicates arterial calcification and might help in characterizing plaque vulnerability. Supplementary Information The online version contains supplementary material available at 10.1007/s11307-020-01563-z.
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Affiliation(s)
- Yavuz Oguz Uca
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117, Berlin, Germany.
| | - David Hallmann
- MR and CT Contrast Media Research, Bayer AG, Berlin, Germany
| | - Bernhard Hesse
- Xploraytion GmbH, Berlin, Germany.,European Synchrotron Radiation Facility (ESRF), Grenoble, France
| | - Christian Seim
- Xploraytion GmbH, Berlin, Germany.,Technische Universität Berlin, Berlin, Germany
| | - Nicola Stolzenburg
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117, Berlin, Germany
| | | | - Jörg Schnorr
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117, Berlin, Germany
| | - Matthias Taupitz
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Charitéplatz 1, 10117, Berlin, Germany
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Wang H, Wong A, Lewis LC, Nemeth GR, Jordan VC, Bacon JW, Caravan P, Shafaat HS, Gale EM. Rational Ligand Design Enables pH Control over Aqueous Iron Magnetostructural Dynamics and Relaxometric Properties. Inorg Chem 2020; 59:17712-17721. [PMID: 33216537 DOI: 10.1021/acs.inorgchem.0c02923] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Complexes of Fe3+ engage in rich aqueous solution speciation chemistry in which discrete molecules can react with solvent water to form multinuclear μ-oxo and μ-hydroxide bridged species. Here we demonstrate how pH- and concentration-dependent equilibration between monomeric and μ-oxo-bridged dimeric Fe3+ complexes can be controlled through judicious ligand design. We purposed this chemistry to develop a first-in-class Fe3+-based MR imaging probe, Fe-PyCy2AI, that undergoes relaxivity change via pH-mediated control of monomer vs dimer speciation. The monomeric complex exists in a S = 5/2 configuration capable of inducing efficient T1-relaxation, whereas the antiferromagnetically coupled dimeric complex is a much weaker relaxation agent. The mechanisms underpinning the pH dependence on relaxivity were interrogated by using a combination of pH potentiometry, 1H and 17O relaxometry, electronic absorption spectroscopy, bulk magnetic susceptibility, electron paramagnetic resonance spectroscopy, and X-ray crystallography measurements. Taken together, the data demonstrate that PyCy2AI forms a ternary complex with high-spin Fe3+ and a rapidly exchanging water coligand, [Fe(PyCy2AI)(H2O)]+ (ML), which can deprotonate to form the high-spin complex [Fe(PyCy2AI)(OH)] (ML(OH)). Under titration conditions of 7 mM Fe complex, water coligand deprotonation occurs with an apparent pKa 6.46. Complex ML(OH) dimerizes to form the antiferromagnetically coupled dimeric complex [(Fe(PyCy2AI))2O] ((ML)2O) with an association constant (Ka) of 5.3 ± 2.2 mM-1. The relaxivity of the monomeric complexes are between 7- and 18-fold greater than the antiferromagnetically coupled dimer at applied field strengths ranging between 1.4 and 11.7 T. ML(OH) and (ML)2O interconvert rapidly within the pH 6.0-7.4 range that is relevant to human pathophysiology, resulting in substantial observed relaxivity change. Controlling Fe3+ μ-oxo bridging interactions through rational ligand design and in response to local chemical environment offers a robust mechanism for biochemically responsive MR signal modulation.
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Affiliation(s)
| | | | - Luke C Lewis
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, United States
| | | | | | - Jeffrey W Bacon
- Department of Chemistry, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, United States
| | | | - Hannah S Shafaat
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, United States
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Hu H. Recent Advances of Bioresponsive Nano-Sized Contrast Agents for Ultra-High-Field Magnetic Resonance Imaging. Front Chem 2020; 8:203. [PMID: 32266217 PMCID: PMC7100386 DOI: 10.3389/fchem.2020.00203] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Accepted: 03/04/2020] [Indexed: 12/11/2022] Open
Abstract
The ultra-high-field magnetic resonance imaging (MRI) nowadays has been receiving enormous attention in both biomaterial research and clinical diagnosis. MRI contrast agents are generally comprising of T1-weighted and T2-weighted contrast agent types, where T1-weighted contrast agents show positive contrast enhancement with brighter images by decreasing the proton's longitudinal relaxation times and T2-weighted contrast agents show negative contrast enhancement with darker images by decreasing the proton's transverse relaxation times. To meet the incredible demand of MRI, ultra-high-field T2 MRI is gradually attracting the attention of research and medical needs owing to its high resolution and high accuracy for detection. It is anticipated that high field MRI contrast agents can achieve high performance in MRI imaging, where parameters of chemical composition, molecular structure and size of varied contrast agents show contrasted influence in each specific diagnostic test. This review firstly presents the recent advances of nanoparticle contrast agents for MRI. Moreover, multimodal molecular imaging with MRI for better monitoring is discussed during biological process. To fasten the process of developing better contrast agents, deep learning of artificial intelligent (AI) can be well-integrated into optimizing the crucial parameters of nanoparticle contrast agents and achieving high resolution MRI prior to the clinical applications. Finally, prospects and challenges are summarized.
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Affiliation(s)
- Hailong Hu
- School of Aeronautics and Astronautics, Central South University, Changsha, China
- Research Center in Intelligent Thermal Structures for Aerospace, Central South University, Changsha, China
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Ardelean IL, Ficai D, Sonmez M, Oprea O, Nechifor G, Andronescu E, Ficai A, Titu MA. Hybrid Magnetic Nanostructures For Cancer Diagnosis And Therapy. Anticancer Agents Med Chem 2019; 19:6-16. [PMID: 30411694 DOI: 10.2174/1871520618666181109112655] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 03/17/2018] [Accepted: 10/23/2018] [Indexed: 12/24/2022]
Abstract
Cancer is the second disease in the world from the point of view of mortality. The conventional routes of treatment were found to be not sufficient and thus alternative ways are imposed. The use of hybrid, magnetic nanostructures is a promising way for simultaneous targeted diagnosis and treatment of various types of cancer. For this reason, the development of core@shell structures was found to be an efficient way to develop stable, biocompatible, non-toxic carriers with shell-dependent internalization capacity in cancer cells. So, the multicomponent approach can be the most suitable way to assure the multifunctionality of these nanostructures to achieve the desired/necessary properties. The in vivo stability is mostly assured by the coating of the magnetic core with various polymers (including polyethylene glycol, silica etc.), while the targeting capacity is mostly assured by the decoration of these nanostructures with folic acid. Unfortunately, there are also some limitations related to the multilayered approach. For instance, the increasing of the thickness of layers leads to a decrease the magnetic properties, (hyperthermia and guiding ability in the magnetic field, for instance), the outer shell should contain the targeting molecules (as well as the agents helping the internalization into the cancer cells), etc.
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Affiliation(s)
- Ioana L Ardelean
- University POLITEHNICA of Bucharest, Faculty of Applied Chemistry and Material Science; 1-7 Polizu Str., 011061 Bucharest, Romania
| | - Denisa Ficai
- University POLITEHNICA of Bucharest, Faculty of Applied Chemistry and Material Science; 1-7 Polizu Str., 011061 Bucharest, Romania
| | - Maria Sonmez
- Leather and Footwear Research Institute, Department of Rubber, 93 Ion Minulescu street, 031215, Bucharest, Romania
| | - Ovidiu Oprea
- University POLITEHNICA of Bucharest, Faculty of Applied Chemistry and Material Science; 1-7 Polizu Str., 011061 Bucharest, Romania
| | - Gheorghe Nechifor
- University POLITEHNICA of Bucharest, Faculty of Applied Chemistry and Material Science; 1-7 Polizu Str., 011061 Bucharest, Romania
| | - Ecaterina Andronescu
- University POLITEHNICA of Bucharest, Faculty of Applied Chemistry and Material Science; 1-7 Polizu Str., 011061 Bucharest, Romania
| | - Anton Ficai
- University POLITEHNICA of Bucharest, Faculty of Applied Chemistry and Material Science; 1-7 Polizu Str., 011061 Bucharest, Romania
| | - Mihail A Titu
- "Lucian Blaga" University of Sibiu, Faculty of Engineering, Industrial Engineering and Management Departament, Sibiu, Romania
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Pillarisetti S, Uthaman S, Huh KM, Koh YS, Lee S, Park IK. Multimodal Composite Iron Oxide Nanoparticles for Biomedical Applications. Tissue Eng Regen Med 2019; 16:451-465. [PMID: 31624701 PMCID: PMC6778581 DOI: 10.1007/s13770-019-00218-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Revised: 08/01/2019] [Accepted: 08/19/2019] [Indexed: 12/11/2022] Open
Abstract
Background Iron oxide nanoparticles (IONPs) are excellent candidates for biomedical imaging because of unique characteristics like enhanced colloidal stability and excellent in vivo biocompatibility. Over the last decade, material scientists have developed IONPs with better imaging and enhanced optical absorbance properties by tuning their sizes, shape, phases, and surface characterizations. Since IONPs could be detected with magnetic resonance imaging, various attempts have been made to combine other imaging modalities, thereby creating a high-resolution imaging platform. Composite IONPs (CIONPs) comprising IONP cores with polymeric or inorganic coatings have recently been documented as a promising modality for therapeutic applications. Methods In this review, we provide an overview of the recent advances in CIONPs for multimodal imaging and focus on the therapeutic applications of CIONPs. Result CIONPs with phototherapeutics, IONP-based nanoparticles are used for theranostic application via imaging guided photothermal therapy. Conclusion CIONP-based nanoparticles are known for theranostic application, longstanding effects of composite NPs in in vivo systems should also be studied. Once such issues are fixed, multifunctional CIONP-based applications can be extended for theranostics of diverse medical diseases in the future.
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Affiliation(s)
- Shameer Pillarisetti
- Department of Biomedical Science, BK21 PLUS Center for Creative Biomedical Scientists, Chonnam National University Medical School, 42 Jebong-ro, Dong-gu, Gwangju, 61469 Republic of Korea
| | - Saji Uthaman
- Department of Polymer Science and Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 34134 Republic of Korea
| | - Kang Moo Huh
- Department of Polymer Science and Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 34134 Republic of Korea
| | - Yang Seok Koh
- Department of Surgery, Chonnam National University Hwasun Hospital and Medical School, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Chonnam, 58128 Republic of Korea
| | - Sangjoon Lee
- Department of Chemical and Biomedical Engineering, Cleveland State University, 2121 Euclid Ave, Cleveland, OH 44115 USA
| | - In-Kyu Park
- Department of Biomedical Science, BK21 PLUS Center for Creative Biomedical Scientists, Chonnam National University Medical School, 42 Jebong-ro, Dong-gu, Gwangju, 61469 Republic of Korea
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Abstract
Cardiac fibrosis is a significant increase in collagen volume fraction of myocardial tissue. It plays an important role in the pathophysiology of many cardiovascular abnormalities. Electrophysiologically, myocardial fibrosis produces anisotropic conduction, inhomogeneity, and conduction delay. Several markers are available to detect myocardial fibrosis. CMRI is the most common imaging technique; late gadolinium enhancement cardiac magnetic resonance (LGE-CMR) provides markers for tissue characterization, disease progression and arrhythmic events. LGE-CMR can be used as risk marker of occurrence of pathologic conditions. LGE-CMR demonstrates specific patterns related to different pathologic substrates. We discuss the role of CMRI in ventricular arrhythmogenesis.
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Affiliation(s)
- Mohammad Shenasa
- Heart and Rhythm Medical Group, Department of Cardiovascular Services, O'Connor Hospital, San Jose, CA 95030, USA.
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Doswald S, Stark WJ, Beck-Schimmer B. Biochemical functionality of magnetic particles as nanosensors: how far away are we to implement them into clinical practice? J Nanobiotechnology 2019; 17:73. [PMID: 31151445 PMCID: PMC6544934 DOI: 10.1186/s12951-019-0506-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 05/27/2019] [Indexed: 01/09/2023] Open
Abstract
Magnetic nanosensors have become attractive instruments for the diagnosis and treatment of different diseases. They represent an efficient carrier system in drug delivery or in transporting contrast agents. For such purposes, magnetic nanosensors are used in vivo (intracorporeal application). To remove specific compounds from blood, magnetic nanosensors act as elimination system, which represents an extracorporeal approach. This review discusses principles, advantages and risks on recent advances in the field of magnetic nanosensors. First, synthesis methods for magnetic nanosensors and possibilities for enhancement of biocompatibility with different coating materials are addressed. Then, attention is devoted to clinical applications, in which nanosensors are or may be used as carrier- and elimination systems in the near future. Finally, risk considerations and possible effects of nanomaterials are discussed when working towards clinical applications with magnetic nanosensors.
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Affiliation(s)
- Simon Doswald
- Institute for Chemical and Bioengineering, ETH Zurich, Zurich, Switzerland
| | - Wendelin Jan Stark
- Institute for Chemical and Bioengineering, ETH Zurich, Zurich, Switzerland
| | - Beatrice Beck-Schimmer
- Institute of Anesthesiology, University of Zurich and University Hospital Zurich, Raemistrasse 100, 8091, Zurich, Switzerland.
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Pellico J, Fernández-Barahona I, Benito M, Gaitán-Simón Á, Gutiérrez L, Ruiz-Cabello J, Herranz F. Unambiguous detection of atherosclerosis using bioorthogonal nanomaterials. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2019; 17:26-35. [DOI: 10.1016/j.nano.2018.12.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 12/13/2018] [Accepted: 12/28/2018] [Indexed: 12/21/2022]
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Shelat R, Bhatt LK, Khanna A, Chandra S. A comprehensive toxicity evaluation of novel amino acid-modified magnetic ferrofluids for magnetic resonance imaging. Amino Acids 2019; 51:929-943. [DOI: 10.1007/s00726-019-02726-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Accepted: 03/15/2019] [Indexed: 12/23/2022]
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Mapping the Transport Kinetics of Molecules and Particles in Idealized Intracranial Side Aneurysms. Sci Rep 2018; 8:8528. [PMID: 29867118 PMCID: PMC5986792 DOI: 10.1038/s41598-018-26940-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 05/18/2018] [Indexed: 12/13/2022] Open
Abstract
Intracranial side aneurysms (IA) are pathological blood-filled bulges in cerebral blood vessels. Unlike healthy blood vessels where mass transport is dominated by convection, both diffusion and convection can play an active role in aneurysm sites. Here, we study via dye washout experiments and numerical simulations, the transport characteristics of particles (1 micron) and small molecules (300 Da) into simplified side aneurysms models following bolus injection. Time-lapse fluorescent microscopy imaging performed in our idealized aneurysm models showed that the parent artery geometry (located on the inner vs. outer curvature) as well as the aneurysm aspect ratio (AR) affect the washout kinetics while the pulsatile nature of the flow, maintained within the physiological range, carries only a minor effect. Importantly, in the absence of effective diffusion, particles that are located on slow streamlines linger within the aneurysm cavity, a phenomenon that could be of importance in deposition of cells and nano/micro-particles within aneurysms. Altogether, mass transport studies may provide valuable insights for better understanding of aneurysm pathophysiology as well as for the design of new diagnostic and theranostic nano-medicines.
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Molecular imaging of cardiac remodelling after myocardial infarction. Basic Res Cardiol 2018; 113:10. [PMID: 29344827 PMCID: PMC5772148 DOI: 10.1007/s00395-018-0668-z] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 11/17/2017] [Accepted: 01/08/2018] [Indexed: 02/06/2023]
Abstract
Myocardial infarction and subsequent heart failure is a major health burden associated with significant mortality and morbidity in western societies. The ability of cardiac tissue to recover after myocardial infarction is affected by numerous complex cellular and molecular pathways. Unbalance or failure of these pathways can lead to adverse remodelling of the heart and poor prognosis. Current clinical cardiac imaging modalities assess anatomy, perfusion, function, and viability of the myocardium, yet do not offer any insight into the specific molecular pathways involved in the repair process. Novel imaging techniques allow visualisation of these molecular processes and may have significant diagnostic and prognostic values, which could aid clinical management. Single photon-emission tomography, positron-emission tomography, and magnetic resonance imaging are used to visualise various aspects of these molecular processes. Imaging probes are usually attached to radioisotopes or paramagnetic nanoparticles to specifically target biological processes such as: apoptosis, necrosis, inflammation, angiogenesis, and scar formation. Although the results from preclinical studies are promising, translating this work to a clinical environment in a valuable and cost-effective way is extremely challenging. Extensive evaluation evidence of diagnostic and prognostic values in multi-centre clinical trials is still required.
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Oleshkevich E, Teixidor F, Rosell A, Viñas C. Merging Icosahedral Boron Clusters and Magnetic Nanoparticles: Aiming toward Multifunctional Nanohybrid Materials. Inorg Chem 2017; 57:462-470. [DOI: 10.1021/acs.inorgchem.7b02691] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Elena Oleshkevich
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain
| | - Francesc Teixidor
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain
| | - Anna Rosell
- Neurovascular Research
Laboratory, Vall d’Hebron Research Institute, Universitat Autònoma de Barcelona, Passeig Vall d’Hebron 119-129, 08035 Barcelona, Spain
| | - Clara Viñas
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain
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Vasquez KO, Peterson JD. Early Detection of Acute Drug-Induced Liver Injury in Mice by Noninvasive Near-Infrared Fluorescence Imaging. J Pharmacol Exp Ther 2017; 361:87-98. [PMID: 28115551 PMCID: PMC5363778 DOI: 10.1124/jpet.116.238378] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2016] [Accepted: 01/18/2017] [Indexed: 01/05/2023] Open
Abstract
Hepatocellular and cholestatic forms of drug-induced liver injury (DILI) are major reasons for late-stage termination of small-molecule drug discovery research projects. Biochemical serum markers are limited in their ability to sensitively and specifically detect both of these common DILI forms in preclinical models, and tissue-specific approaches to assessing this are labor intensive, requiring extensive animal dosing, tissue preparation, and pathology assessment. In vivo fluorescent imaging offers noninvasive detection of biologic changes detected directly in the livers of living animals. Three different near-infrared fluorescent imaging probes, specific for cell death (Annexin-Vivo 750), matrix metalloproteases (MMPSense 750 FAST), and transferrin receptor (Transferrin-Vivo 750) were used to measure the effects of single bolus intraperitoneal doses of four different chemical agents known to induce liver injury. Hepatocellular injury–inducing agents, thioacetamide and acetaminophen, showed optimal injury detection with probe injection at 18–24 hours, the liver cholestasis-inducing drug rifampicin required early probe injection (2 hours), and chlorpromazine, which induces mixed hepatocellular/cholestatic injury, showed injury with both early and late injection. Different patterns of liver responses were seen among these different imaging probes, and no one probe detected injury by all four compounds. By using a cocktail of these three near-infrared fluorescent imaging probes, all labeled with 750-nm fluorophores, each of the four different DILI agents induced comparable tissue injury within the liver region, as assessed by epifluorescence imaging. A strategy of probe cocktail injection in separate cohorts at 2 hours and at 20–24 hours allowed the effective detection of drugs with either early- or late-onset injury.
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Abstract
PURPOSE OF REVIEW Spurred by numerous recent technological advances, cardiac MRI (CMR) is now the gold standard for anatomic evaluation, quantitative assessment of chamber size and function, flow quantification, and tissue characterization. This review focuses on recent advances in pediatric and congenital CMR, highlighting recent safety data, and discussing future directions. RECENT FINDINGS CMR has become an important component of risk stratification and procedural planning in numerous congenital and pediatric heart diseases. Innovative approaches to image acquisition and reconstruction are leading the way toward fast, high-resolution, three- and four-dimensional datasets for delineation of cardiac anatomy, function, and flow. In addition, techniques for assessing the composition of the myocardium may help elucidate the pathophysiology of late complications, identify patients at risk for heart failure, and assist in the evaluation of therapeutic strategies. SUMMARY CMR provides invaluable morphologic, hemodynamic, and functional data that help guide diagnosis, assessment, and management of pediatric and adult congenital heart disease. As imaging techniques advance and data accumulate on the relative and additive value of CMR in patient care, its role in a multimodality approach to the care of this population of patients is becoming clear and is likely to continue to evolve.
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Hu B, Zeng M, Chen J, Zhang Z, Zhang X, Fan Z, Zhang X. External Magnetic Field-Induced Targeted Delivery of Highly Sensitive Iron Oxide Nanocubes for MRI of Myocardial Infarction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:4707-4712. [PMID: 27147555 DOI: 10.1002/smll.201600263] [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: 01/27/2016] [Revised: 04/01/2016] [Indexed: 06/05/2023]
Abstract
Magnetic field responsive nanocubes (MFRFs) are synthesized as nanoplatforms for external magnetic field-induced selective targeting of macrophages in the infarcted tissue and magnetic resonance imaging (MRI) monitoring. MFRFs have uniform size, favorable colloidal stability, and high magnetic properties. Under the influence of external magnetic field, MFRFs perform qualitative and quantitative MRI of myocardial infarction.
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Affiliation(s)
- Bingbing Hu
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Mu Zeng
- Department of Radiology, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, Beijing, 100029, P. R. China
| | - Jingli Chen
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Zhenzhong Zhang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Xiaoning Zhang
- Collaborative Innovation Center for Biotherapy, School of Medicine, Tsinghua University, Beijing, 100084, P. R. China
| | - Zhanming Fan
- Department of Radiology, Beijing An Zhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Disease, Beijing, 100029, P. R. China.
| | - Xin Zhang
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
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Zhang C, Liu H, Cui Y, Li X, Zhang Z, Zhang Y, Wang D. Molecular magnetic resonance imaging of activated hepatic stellate cells with ultrasmall superparamagnetic iron oxide targeting integrin αvβ₃ for staging liver fibrosis in rat model. Int J Nanomedicine 2016; 11:1097-108. [PMID: 27051285 PMCID: PMC4807947 DOI: 10.2147/ijn.s101366] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Purpose To evaluate the expression level of integrin αvβ3 on activated hepatic stellate cells (HSCs) at different stages of liver fibrosis induced by carbon tetrachloride (CCl4) in rat model and the feasibility to stage liver fibrosis by using molecular magnetic resonance imaging (MRI) with arginine-glycine-aspartic acid (RGD) peptide modified ultrasmall superparamagnetic iron oxide nanoparticle (USPIO) specifically targeting integrin αvβ3. Materials and methods All experiments received approval from our Institutional Animal Care and Use Committee. Thirty-six rats were randomly divided into three groups of 12 subjects each, and intraperitoneally injected with CCl4 for either 3, 6, or 9 weeks. Controls (n=10) received pure olive oil. The change in T2* relaxation rate (ΔR2*) pre- and postintravenous administration of RGD-USPIO or naked USPIO was measured by 3.0T clinical MRI and compared by one-way analysis of variance or the Student’s t-test. The relationship between expression level of integrin αvβ3 and liver fibrotic degree was evaluated by Spearman’s ranked correlation. Results Activated HSCs were confirmed to be the main cell types expressing integrin αvβ3 during liver fibrogenesis. The protein level of integrin αv and β3 subunit expressed on activated HSCs was upregulated and correlated well with the progression of liver fibrosis (r=0.954, P<0.001; r=0.931, P<0.001, respectively). After injection of RGD-USPIO, there is significant difference in ΔR2* among rats treated with 0, 3, 6, and 9 weeks of CCl4 (P<0.001). The accumulation of iron particles in fibrotic liver specimen is significantly greater for RGD-USPIO than naked USPIO after being injected with equal dose of iron. Conclusion Molecular MRI of integrin αvβ3 expressed on activated HSCs by using RGD-USPIO may distinguish different liver fibrotic stages in CCl4 rat model and shows promising to noninvasively monitor the progression of the liver fibrosis and therapeutic response to antifibrotic treatment.
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Affiliation(s)
- Caiyuan Zhang
- Department of Radiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Huanhuan Liu
- Department of Radiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Yanfen Cui
- Department of Radiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Xiaoming Li
- Department of Radiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Zhongyang Zhang
- Department of Radiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Yong Zhang
- MR Advanced Application and Research Center, GE Healthcare China, Shanghai, People's Republic of China
| | - Dengbin Wang
- Department of Radiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
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Mandal S, Chaudhuri K. Engineered magnetic core shell nanoprobes: Synthesis and applications to cancer imaging and therapeutics. World J Biol Chem 2016; 7:158-167. [PMID: 26981204 PMCID: PMC4768120 DOI: 10.4331/wjbc.v7.i1.158] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Revised: 09/23/2015] [Accepted: 12/04/2015] [Indexed: 02/05/2023] Open
Abstract
Magnetic core shell nanoparticles are composed of a highly magnetic core material surrounded by a thin shell of desired drug, polymer or metal oxide. These magnetic core shell nanoparticles have a wide range of applications in biomedical research, more specifically in tissue imaging, drug delivery and therapeutics. The present review discusses the up-to-date knowledge on the various procedures for synthesis of magnetic core shell nanoparticles along with their applications in cancer imaging, drug delivery and hyperthermia or cancer therapeutics. Literature in this area shows that magnetic core shell nanoparticle-based imaging, drug targeting and therapy through hyperthermia can potentially be a powerful tool for the advanced diagnosis and treatment of various cancers.
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Salvador MA, Costa AS, Gaeti M, Mendes LP, Lima EM, Bakuzis AF, Miotto R. Characterization, nanoparticle self-organization, and Monte Carlo simulation of magnetoliposomes. Phys Rev E 2016; 93:022609. [PMID: 26986379 DOI: 10.1103/physreve.93.022609] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Indexed: 05/15/2023]
Abstract
In this work we have developed and implement a new approach for the study of magnetoliposomes using Monte Carlo simulations. Our model is based on interaction among nanoparticles considering magnetic dipolar, van der Waals, ionic-steric, and Zeeman interaction potentials. The ionic interaction between nanoparticles and the lipid bilayer is represented by an ionic repulsion electrical surface potential that depends on the nanoparticle-lipid bilayer distance and the concentration of ions in the solution. A direct comparison among transmission electron microscopy, vibrating sample magnetometer, dynamic light scattering, nanoparticle tracking analysis, and experimentally derived static magnetic birefringence and simulation data allow us to validate our implementation. Our simulations suggest that confinement plays an important role in aggregate formation.
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Affiliation(s)
- Michele Aparecida Salvador
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Rua Santa Adelia 166, CEP 09210-170, Santo André, SP, Brazil
| | - Anderson Silva Costa
- Instituto de Física, Universidade Federal de Goiás, CEP 74.690-900, Goiânia, Go, Brazil
| | - Marilisa Gaeti
- Faculdade de Farmácia, Universidade Federal de Goiás, CEP 74605-220, Goiânia, Go, Brazil
| | | | - Eliana Martins Lima
- Faculdade de Farmácia, Universidade Federal de Goiás, CEP 74605-220, Goiânia, Go, Brazil
| | | | - Ronei Miotto
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Rua Santa Adelia 166, CEP 09210-170, Santo André, SP, Brazil
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Lee N, Yoo D, Ling D, Cho MH, Hyeon T, Cheon J. Iron Oxide Based Nanoparticles for Multimodal Imaging and Magnetoresponsive Therapy. Chem Rev 2015; 115:10637-89. [PMID: 26250431 DOI: 10.1021/acs.chemrev.5b00112] [Citation(s) in RCA: 586] [Impact Index Per Article: 65.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Nohyun Lee
- School of Advanced Materials Engineering, Kookmin University , Seoul 136-702, Korea
| | - Dongwon Yoo
- Department of Chemistry, Yonsei University , Seoul 120-749, Korea
| | - Daishun Ling
- Center for Nanoparticle Research, Institute for Basic Science (IBS) , Seoul 151-742, Korea.,School of Chemical and Biological Engineering, Seoul National University , Seoul 151-742, Korea.,Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University , Hangzhou 310058, PR China
| | - Mi Hyeon Cho
- Department of Chemistry, Yonsei University , Seoul 120-749, Korea
| | - Taeghwan Hyeon
- Center for Nanoparticle Research, Institute for Basic Science (IBS) , Seoul 151-742, Korea.,School of Chemical and Biological Engineering, Seoul National University , Seoul 151-742, Korea
| | - Jinwoo Cheon
- Department of Chemistry, Yonsei University , Seoul 120-749, Korea
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Du W, Tao H, Zhao S, He ZX, Li Z. Translational applications of molecular imaging in cardiovascular disease and stem cell therapy. Biochimie 2015; 116:43-51. [PMID: 26134715 DOI: 10.1016/j.biochi.2015.06.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 06/25/2015] [Indexed: 12/21/2022]
Abstract
Cardiovascular disease (CVD) is the leading cause of mortality and morbidity worldwide. Molecular imaging techniques provide valuable information at cellular and molecular level, as opposed to anatomical and structural layers acquired from traditional imaging modalities. More specifically, molecular imaging employs imaging probes which interact with specific molecular targets and therefore makes it possible to visualize biological processes in vivo. Molecular imaging technology is now progressing towards preclinical and clinical application that gives an integral and comprehensive guidance for the investigation of cardiovascular disease. In addition, cardiac stem cell therapy holds great promise for clinical translation. Undoubtedly, combining stem cell therapy with molecular imaging technology will bring a broad prospect for the study and treatment of cardiac disease. This review will focus on the progresses of molecular imaging strategies in cardiovascular disease and cardiac stem cell therapy. Furthermore, the perspective on the future role of molecular imaging in clinical translation and potential strategies in defining safety and efficacy of cardiac stem cell therapies will be discussed.
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Affiliation(s)
- Wei Du
- Collaborative Innovation Center for Biotherapy, Nankai University School of Medicine, Tianjin, China; Tianjin Key Laboratory of Tumor Microenvironment and Neurovascular Regulation, Nankai University School of Medicine, Tianjin, China; The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, China
| | - Hongyan Tao
- Collaborative Innovation Center for Biotherapy, Nankai University School of Medicine, Tianjin, China; Tianjin Key Laboratory of Tumor Microenvironment and Neurovascular Regulation, Nankai University School of Medicine, Tianjin, China
| | - Shihua Zhao
- Department of Radiology, Fuwai Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Zuo-Xiang He
- Department of Nuclear Imaging, Fuwai Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China.
| | - Zongjin Li
- Collaborative Innovation Center for Biotherapy, Nankai University School of Medicine, Tianjin, China; Tianjin Key Laboratory of Tumor Microenvironment and Neurovascular Regulation, Nankai University School of Medicine, Tianjin, China; The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, China.
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Grayston JT, Belland RJ, Byrne GI, Kuo CC, Schachter J, Stamm WE, Zhong G. Infection with Chlamydia pneumoniae as a cause of coronary heart disease: the hypothesis is still untested. Pathog Dis 2015; 73:1-9. [PMID: 25854002 PMCID: PMC4492408 DOI: 10.1093/femspd/ftu015] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 09/26/2014] [Accepted: 11/12/2014] [Indexed: 11/13/2022] Open
Abstract
Review of the possible role of Chlamydia pneumoniae infection in the pathogenesis of heart disease.
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Affiliation(s)
- J Thomas Grayston
- Department of Epidemiology, University of Washington, Box 357236, Seattle, WA 98195-7326, USA
| | - Robert J Belland
- Department of Microbiology, Immunology and Biochemistry, University of Tennessee, Health Science Center, Memphis, TN 38163, USA
| | - Gerald I Byrne
- Department of Microbiology, Immunology and Biochemistry, University of Tennessee, Health Science Center, Memphis, TN 38163, USA
| | - Cho Chou Kuo
- Department of Epidemiology, University of Washington, Box 357236, Seattle, WA 98195-7326, USA
| | - Julius Schachter
- Department of Laboratory Medicine, UCSF, San Francisco, CA 94143, USA
| | - Walter E Stamm
- Department of Medicine, University of Washington, Seattle, WA, USA
| | - Guangming Zhong
- Department of Microbiology and Immunology, University of Texas Health Science Center San Antonio, San Antonio, TX 78229, USA
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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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Majidi S, Zeinali Sehrig F, Farkhani SM, Soleymani Goloujeh M, Akbarzadeh A. Current methods for synthesis of magnetic nanoparticles. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2014; 44:722-34. [DOI: 10.3109/21691401.2014.982802] [Citation(s) in RCA: 183] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Multifunctional MR monitoring of the healing process after myocardial infarction. Basic Res Cardiol 2014; 109:430. [PMID: 25098936 DOI: 10.1007/s00395-014-0430-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Revised: 07/22/2014] [Accepted: 07/28/2014] [Indexed: 12/24/2022]
Abstract
Healing of the myocardium after infarction comprises a variety of local adaptive processes which contribute to the functional outcome after the insult. Therefore, we aimed to establish a setting for concomitant assessment of regional alterations in contractile function, morphology, and immunological state to gain prognostic information on cardiac recovery after infarction. For this, mice were subjected to myocardial ischemia/reperfusion (I/R) and monitored for 28 days by cine MRI, T2 mapping, late gadolinium enhancement (LGE), and (19)F MRI. T2 values were calculated from gated multi-echo sequences. (19)F-loaded nanoparticles were injected intravenously for labelling circulating monocytes and making them detectable by (19)F MRI. In-house developed software was used for regional analysis of cine loops, T2 maps, LGE, and (19)F images to correlate local wall movement, tissue damage as well as monocyte recruitment over up to 200 sectors covering the left ventricle. This enabled us to evaluate simultaneously zonal cardiac necrosis, oedema, and inflammation patterns together with sectional fractional shortening (FS) and global myocardial function. Oedema, indicated by a rise in T2, showed a slightly better correlation with FS than LGE. Regional T2 values increased from 19 ms to above 30 ms after I/R. In the course of the healing process oedema resolved within 28 days, while myocardial function recovered. Infiltrating monocytes could be quantitatively tracked by (19)F MRI, as validated by flow cytometry. Furthermore, (19)F MRI proved to yield valuable insight on the outcome of myocardial infarction in a transgenic mouse model. In conclusion, our approach permits a comprehensive surveillance of key processes involved in myocardial healing providing independent and complementary information for individual prognosis.
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Nunes ADC, Ramalho LS, Souza APS, Mendes EP, Colugnati DB, Zufelato N, Sousa MH, Bakuzis AF, Castro CH. Manganese ferrite-based nanoparticles induce ex vivo, but not in vivo, cardiovascular effects. Int J Nanomedicine 2014; 9:3299-312. [PMID: 25031535 PMCID: PMC4099104 DOI: 10.2147/ijn.s64254] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Magnetic nanoparticles (MNPs) have been used for various biomedical applications. Importantly, manganese ferrite-based nanoparticles have useful magnetic resonance imaging characteristics and potential for hyperthermia treatment, but their effects in the cardiovascular system are poorly reported. Thus, the objectives of this study were to determine the cardiovascular effects of three different types of manganese ferrite-based magnetic nanoparticles: citrate-coated (CiMNPs); tripolyphosphate-coated (PhMNPs); and bare magnetic nanoparticles (BaMNPs). The samples were characterized by vibrating sample magnetometer, X-ray diffraction, dynamic light scattering, and transmission electron microscopy. The direct effects of the MNPs on cardiac contractility were evaluated in isolated perfused rat hearts. The CiMNPs, but not PhMNPs and BaMNPs, induced a transient decrease in the left ventricular end-systolic pressure. The PhMNPs and BaMNPs, but not CiMNPs, induced an increase in left ventricular end-diastolic pressure, which resulted in a decrease in a left ventricular end developed pressure. Indeed, PhMNPs and BaMNPs also caused a decrease in the maximal rate of left ventricular pressure rise (+dP/dt) and maximal rate of left ventricular pressure decline (−dP/dt). The three MNPs studied induced an increase in the perfusion pressure of isolated hearts. BaMNPs, but not PhMNPs or CiMNPs, induced a slight vasorelaxant effect in the isolated aortic rings. None of the MNPs were able to change heart rate or arterial blood pressure in conscious rats. In summary, although the MNPs were able to induce effects ex vivo, no significant changes were observed in vivo. Thus, given the proper dosages, these MNPs should be considered for possible therapeutic applications.
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Affiliation(s)
- Allancer D C Nunes
- Department of Physiological Sciences, Federal University of Goiás, Goiânia, Brazil
| | | | - Alvaro P S Souza
- Department of Physiological Sciences, Federal University of Goiás, Goiânia, Brazil
| | - Elizabeth P Mendes
- Department of Physiological Sciences, Federal University of Goiás, Goiânia, Brazil ; National Institute of Science and Technology in Nanobiopharmaceutics, Belo Horizonte, Brazil
| | - Diego B Colugnati
- Department of Physiological Sciences, Federal University of Goiás, Goiânia, Brazil
| | | | - Marcelo H Sousa
- Faculty of Ceilândia, University of Brasília, Brasília-DF, Brazil
| | | | - Carlos H Castro
- Department of Physiological Sciences, Federal University of Goiás, Goiânia, Brazil ; National Institute of Science and Technology in Nanobiopharmaceutics, Belo Horizonte, Brazil
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A novel gadolinium-based trimetasphere metallofullerene for application as a magnetic resonance imaging contrast agent. Invest Radiol 2014; 48:745-54. [PMID: 23748228 DOI: 10.1097/rli.0b013e318294de5d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Macromolecular contrast agents for magnetic resonance imaging (MRI) are useful blood-pool agents because of their long systemic half-life and have found applications in monitoring tumor vasculature and angiogenesis. Macromolecular contrast agents have been able to overcome some of the disadvantages of the conventional small-molecule contrast agent Magnevist (gadolinium-diethylenetriaminepentaacetic acid), such as rapid extravasation and quick renal clearance, which limits the viable MRI time. There is an urgent need for new MRI contrast agents that increase the sensitivity of detection with a higher relaxivity, longer blood half-life, and reduced toxicity from free Gd3+ ions. Here, we report on the characterization of a novel water-soluble, derivatized, gadolinium-enclosed metallofullerene nanoparticle (Hydrochalarone-1) in development as an MRI contrast agent. MATERIALS AND METHODS The physicochemical properties of Hydrochalarone-1 were characterized by dynamic light scattering (hydrodynamic diameter), atomic force microscopy (particle height), ζ potential analysis (surface charge), and inductively coupled plasma-mass spectrometry (gadolinium concentration). The blood compatibility of Hydrochalarone-1 was also assessed in vitro through analysis of hemolysis, platelet aggregation, and complement activation of human blood. In vitro relaxivities, in vivo pharmacokinetics, and a pilot in vivo acute toxicity study were also performed. RESULTS An extensive in vitro and in vivo characterization of Hydrochalarone-1 is described here. The hydrodynamic size of Hydrochalarone-1 was 5 to 7 nm depending on the dispersing media, and it was negatively charged at physiological pH. Hydrochalarone-1 showed compatibility with blood cells in vitro, and no significant hemolysis, platelet aggregation, or complement activation was observed in vitro. In addition, Hydrochalarone-1 had significantly higher r1 and r2 in vitro relaxivities in human plasma in comparison with Magnevist and was not toxic at the doses administered in an in vivo pilot acute-dose toxicity study in mice.In vivo MRI pharmacokinetic analysis after a single intravenous injection of Hydrochalarone-1 (0.2 mmol Gd/kg) showed that the volume of distribution at steady state was approximately 100 mL/kg, suggesting prolonged systemic circulation. Hydrochalarone-1 also had a long blood half-life (88 minutes) and increased relaxivity, suggesting application as a promising blood-pool MRI contrast agent. CONCLUSIONS The evidence suggests that Hydrochalarone-1, with its long systemic half-life, may have significant utility as a blood-pool MRI contrast agent.
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Hussain T, Nguyen QT. Molecular imaging for cancer diagnosis and surgery. Adv Drug Deliv Rev 2014; 66:90-100. [PMID: 24064465 DOI: 10.1016/j.addr.2013.09.007] [Citation(s) in RCA: 210] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Revised: 09/07/2013] [Accepted: 09/13/2013] [Indexed: 12/11/2022]
Abstract
Novel molecular imaging techniques have the potential to significantly enhance the diagnostic and therapeutic approaches for cancer treatment. For solid tumors in particular, novel molecular enhancers for imaging modalities such as US, CT, MRI and PET may facilitate earlier and more accurate diagnosis and staging which are prerequisites for successful surgical therapy. Enzymatically activatable "smart" molecular MRI probes seem particularly promising because of their potential to image tumors before and after surgical removal without re-administration of the probe to evaluate completeness of surgical resection. Furthermore, the use of "smart" MR probes as part of screening programs may enable detection of small tumors throughout the body in at-risk patient populations. Dual labeling of molecular MR probes with fluorescent dyes can add real time intraoperative guidance facilitating complete tumor resection and preservation of important structures. A truly theranostic approach with the further addition of therapeutic agents to the molecular probe for adjuvant therapy is conceivable for the future.
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You DG, Saravanakumar G, Son S, Han HS, Heo R, Kim K, Kwon IC, Lee JY, Park JH. Dextran sulfate-coated superparamagnetic iron oxide nanoparticles as a contrast agent for atherosclerosis imaging. Carbohydr Polym 2013; 101:1225-33. [PMID: 24299895 DOI: 10.1016/j.carbpol.2013.10.068] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Revised: 09/16/2013] [Accepted: 10/21/2013] [Indexed: 01/14/2023]
Abstract
The hallmark of atherosclerosis in its early pathogenic process is the overexpression of class A scavenger receptors (SR-A) by activated macrophages. In this study, dextran sulfate-coated superparamagnetic iron oxide nanoparticles (DS-SPIONs), as a magnetic resonance (MR) imaging contrast agent of atherosclerosis, was prepared via the facile co-precipitation method using a versatile double-hydrophilic block copolymer comprising of a DS segment (ligand for SR-A) and a poly(glyclerol methacrylate) segment (SPIONs surface-anchoring unit). The physicochemical properties of the DS-SPIONs were investigated using various instruments. DS-SPIONs exhibited high aqueous stability compared to dextran-coated SPIONs (Dex-SPIONs), which were used as controls. The cellular uptake behaviors of DS-SPIONs and Dex-SPIONs were evaluated using Prussian blue assay. Interestingly, the DS-SPIONs were effectively taken up by activated macrophages compared to Dex-SPIONs. However, the cellular uptake of DS-SPIONs by activated macrophages was remarkably reduced in the presence of free DS. These results suggest that activated macrophages internalize DS-SPIONs via receptor (SR-A)-mediated endocytosis. T2-weighted MR imaging of the cells demonstrated that activated macrophages treated with DS-SPIONs showed a significantly lower signal intensity compared to those treated with Dex-SPIONs. Overall, these results suggest that DS-SPIONs may be utilized as a potential contrast agent for atherosclerosis MR imaging.
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Affiliation(s)
- Dong Gil You
- Departments of Polymer Science and Chemical Engineering, College of Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea; Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 6, Seongbuk-gu, Seoul 136-791, Republic of Korea
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Abstract
This review focuses on molecular imaging using various radioligands for the tissue characterization of patients with heart failure. 123I-labeled metaiodobenzylguanidine (MIBG), as a marker of adrenergic neuron function, plays an important role in risk stratification in heart failure and may be useful for predicting fatal arrhythmias that may require implantable cardioverter-defibrillator treatment. MIBG has also been used for monitoring treatment effects under various medications. Various positron emission tomography (PET) radioligands have been introduced for the quantitative assessment of presynaptic and postsynaptic neuronal function in vivo. 11C-hydroxyephedrine, like MIBG, has potential for assessing the severity of heart failure. Our PET study using the β-receptor antagonist 11C-CGP 12177 in patients with heart failure showed a reduction of β-receptor density, indicating downregulation, in most of the patients. More studies are needed to confirm the clinical utility of these molecular imaging modalities for the management of heart failure patients.
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Magnetic iron oxide nanoparticles for multimodal imaging and therapy of cancer. Int J Mol Sci 2013; 14:15910-30. [PMID: 23912234 PMCID: PMC3759893 DOI: 10.3390/ijms140815910] [Citation(s) in RCA: 142] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Revised: 07/16/2013] [Accepted: 07/18/2013] [Indexed: 12/24/2022] Open
Abstract
Superparamagnetic iron oxide nanoparticles (SPION) have emerged as an MRI contrast agent for tumor imaging due to their efficacy and safety. Their utility has been proven in clinical applications with a series of marketed SPION-based contrast agents. Extensive research has been performed to study various strategies that could improve SPION by tailoring the surface chemistry and by applying additional therapeutic functionality. Research into the dual-modal contrast uses of SPION has developed because these applications can save time and effort by reducing the number of imaging sessions. In addition to multimodal strategies, efforts have been made to develop multifunctional nanoparticles that carry both diagnostic and therapeutic cargos specifically for cancer. This review provides an overview of recent advances in multimodality imaging agents and focuses on iron oxide based nanoparticles and their theranostic applications for cancer. Furthermore, we discuss the physiochemical properties and compare different synthesis methods of SPION for the development of multimodal contrast agents.
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A two-step stimulus-response cell-SELEX method to generate a DNA aptamer to recognize inflamed human aortic endothelial cells as a potential in vivo molecular probe for atherosclerosis plaque detection. Anal Bioanal Chem 2013; 405:6853-61. [PMID: 23842900 DOI: 10.1007/s00216-013-7155-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Revised: 06/14/2013] [Accepted: 06/17/2013] [Indexed: 02/06/2023]
Abstract
Aptamers are single-stranded oligonucleotides that are capable of binding wide classes of targets with high affinity and specificity. Their unique three-dimensional structures present numerous possibilities for recognizing virtually any class of target molecules, making them a promising alternative to antibodies used as molecular probes in biomedical analysis and clinical diagnosis. In recent years, cell-systematic evolution of ligands by exponential enrichment (SELEX) has been used extensively to select aptamers for various cell targets. However, aptamers that have evolved from cell-SELEX to distinguish the "stimulus-response cell" have not previously been reported. Moreover, a number of cumbersome and time-consuming steps involved in conventional cell-SELEX reduce the efficiency and efficacy of the aptamer selection. Here, we report a "two-step" methodology of cell-SELEX that successfully selected DNA aptamers specifically against "inflamed" endothelial cells. This has been termed as stimulus-response cell-SELEX (SRC-SELEX). The SRC-SELEX enables the selection of aptamers to distinguish the cells activated by stimulus of healthy cells or cells isolated from diseased tissue. We report a promising aptamer, N55, selected by SRC-SELEX, which can bind specifically to inflamed endothelial cells both in cell culture and atherosclerotic plaque tissue. This aptamer probe was demonstrated as a potential molecular probe for magnetic resonance imaging to target inflamed endothelial cells and atherosclerotic plaque detection.
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Heidt T, Nahrendorf M. Multimodal iron oxide nanoparticles for hybrid biomedical imaging. NMR IN BIOMEDICINE 2013; 26:756-765. [PMID: 23065771 PMCID: PMC3549036 DOI: 10.1002/nbm.2872] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2012] [Revised: 08/01/2012] [Accepted: 08/29/2012] [Indexed: 05/31/2023]
Abstract
Iron oxide core nanoparticles are attractive imaging agents because their material properties allow the tuning of pharmacokinetics as well as the attachment of multiple moieties to their surface. In addition to affinity ligands, these include fluorochromes and radioisotopes for detection with optical and nuclear imaging. As the iron oxide core can be detected by MRI, options for combining imaging modalities are manifold. Already, preclinical imaging strategies have combined noninvasive imaging with higher resolution techniques, such as intravital microscopy, to gain unprecedented insight into steady-state biology and disease. Going forward, hybrid iron oxide nanoparticles will help to merge modalities, creating a synergy that will enable imaging in basic research and, potentially, also in the clinic.
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Affiliation(s)
- Timo Heidt
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Matthias Nahrendorf
- Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
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Zhu D, Liu F, Ma L, Liu D, Wang Z. Nanoparticle-based systems for T(1)-weighted magnetic resonance imaging contrast agents. Int J Mol Sci 2013; 14:10591-607. [PMID: 23698781 PMCID: PMC3676856 DOI: 10.3390/ijms140510591] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 05/09/2013] [Accepted: 05/13/2013] [Indexed: 12/29/2022] Open
Abstract
Because magnetic resonance imaging (MRI) contrast agents play a vital role in diagnosing diseases, demand for new MRI contrast agents, with an enhanced sensitivity and advanced functionalities, is very high. During the past decade, various inorganic nanoparticles have been used as MRI contrast agents due to their unique properties, such as large surface area, easy surface functionalization, excellent contrasting effect, and other size-dependent properties. This review provides an overview of recent progress in the development of nanoparticle-based T1-weighted MRI contrast agents. The chemical synthesis of the nanoparticle-based contrast agents and their potential applications were discussed and summarized. In addition, the recent development in nanoparticle-based multimodal contrast agents including T1-weighted MRI/computed X-ray tomography (CT) and T1-weighted MRI/optical were also described, since nanoparticles may curtail the shortcomings of single mode contrast agents in diagnostic and clinical settings by synergistically incorporating functionality.
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Affiliation(s)
- Derong Zhu
- Department of Medicinal Chemistry and Pharmaceutical Analysis, Guangdong Medical College, Dongwan 523770, Guangdong, China; E-Mail:
| | - Fuyao Liu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China; E-Mails: (F.L.); (D.L.)
| | - Lina Ma
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China; E-Mails: (F.L.); (D.L.)
| | - Dianjun Liu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China; E-Mails: (F.L.); (D.L.)
| | - Zhenxin Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China; E-Mails: (F.L.); (D.L.)
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Bakuzis AF, Branquinho LC, Luiz e Castro L, de Amaral e Eloi MT, Miotto R. Chain formation and aging process in biocompatible polydisperse ferrofluids: experimental investigation and Monte Carlo simulations. Adv Colloid Interface Sci 2013; 191-192:1-21. [PMID: 23360743 DOI: 10.1016/j.cis.2012.12.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2012] [Revised: 12/27/2012] [Accepted: 12/28/2012] [Indexed: 11/25/2022]
Abstract
We review the use of Monte Carlo simulations in the description of magnetic nanoparticles dispersed in a liquid carrier. Our main focus is the use of theory and simulation as tools for the description of the properties of ferrofluids. In particular, we report on the influence of polydispersity and short-range interaction on the self-organization of nanoparticles. Such contributions are shown to be extremely important for systems characterized by particles with diameters smaller than 10nm. A new 3D polydisperse Monte Carlo implementation for biocompatible magnetic colloids is proposed. As an example, theoretical and simulation results for an ionic-surfacted ferrofluid dispersed in a NaCl solution are directly compared to experimental data (transmission electron microscopy - TEM, magneto-transmissivity, and electron magnetic resonance - EMR). Our combined theoretical and experimental results suggest that during the aging process two possible mechanisms are likely to be observed: the nanoparticle's grafting decreases due to aggregate formation and the Hamaker constant increases due to oxidation. In addition, we also briefly discuss theoretical agglomerate formation models and compare them to experimental data.
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Gjuvsland AB, Vik JO, Beard DA, Hunter PJ, Omholt SW. Bridging the genotype-phenotype gap: what does it take? J Physiol 2013; 591:2055-66. [PMID: 23401613 PMCID: PMC3634519 DOI: 10.1113/jphysiol.2012.248864] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
The genotype-phenotype map (GP map) concept applies to any time point in the ontogeny of a living system. It is the outcome of very complex dynamics that include environmental effects, and bridging the genotype-phenotype gap is synonymous with understanding these dynamics. The context for this understanding is physiology, and the disciplinary goals of physiology do indeed demand the physiological community to seek this understanding. We claim that this task is beyond reach without use of mathematical models that bind together genetic and phenotypic data in a causally cohesive way. We provide illustrations of such causally cohesive genotype-phenotype models where the phenotypes span from gene expression profiles to development of whole organs. Bridging the genotype-phenotype gap also demands that large-scale biological ('omics') data and associated bioinformatics resources be more effectively integrated with computational physiology than is currently the case. A third major element is the need for developing a phenomics technology way beyond current state of the art, and we advocate the establishment of a Human Phenome Programme solidly grounded on biophysically based mathematical descriptions of human physiology.
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Affiliation(s)
- Arne B Gjuvsland
- Centre for Integrative Genetics, Department of Mathematical and Technological Sciences, Norwegian University of Life Sciences, Norway
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Fernández-Friera L, García-Álvarez A, Ibáñez B. Imagining the future of diagnostic imaging. ACTA ACUST UNITED AC 2012; 66:134-43. [PMID: 24775390 DOI: 10.1016/j.rec.2012.11.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Accepted: 10/01/2012] [Indexed: 01/21/2023]
Abstract
Cardiovascular imaging has become essential to achieving a better understanding of cardiovascular diseases. Due to the advent of new technology and the refinement of existing technologies, imaging's role has extended into the biological, functional, and hemodynamic diagnosis of multiple pathophysiologic processes. Current and future trends in cardiovascular imaging will focus on improving early diagnosis of vascular disease, so as to be able to promote cardiovascular health, and on its development as a useful tool in clinical decision-making. Imaging is also increasingly used to quantify the effect of novel therapies. The rapid development of molecular imaging and fusion imaging techniques improves our understanding of cardiovascular processes from the molecular and cellular points of view and makes it possible to design and test new preventive interventions. The proliferation and integration of imaging techniques in different clinical areas and their role in "translational imaging" plays an important part in the implementation of personalized therapeutic and preventive management strategies for patients with cardiovascular disease.
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Affiliation(s)
- Leticia Fernández-Friera
- Centro Nacional de Investigaciones Cardiovasculares (CNIC) - Imaging in Experimental Cardiology Laboratory (IExC Lab), Madrid, Spain; Servicio de Cardiología, Hospital Universitario Montepríncipe, Madrid, Spain
| | - Ana García-Álvarez
- Centro Nacional de Investigaciones Cardiovasculares (CNIC) - Imaging in Experimental Cardiology Laboratory (IExC Lab), Madrid, Spain; Servicio de Cardiología, Hospital Clínic, Barcelona, Spain
| | - Borja Ibáñez
- Centro Nacional de Investigaciones Cardiovasculares (CNIC) - Imaging in Experimental Cardiology Laboratory (IExC Lab), Madrid, Spain; Instituto Cardiovascular, Hospital Clínico San Carlos, Madrid, Spain.
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Sosnovik DE, Caravan P. Molecular MRI of the Cardiovascular System in the Post-NSF Era. CURRENT CARDIOVASCULAR IMAGING REPORTS 2012; 6:61-68. [PMID: 23504765 DOI: 10.1007/s12410-012-9182-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Two new molecular MRI agents have been approved for clinical use within the last 3 years, and a third agent has completed phase-2 clinical trials. A wealth of preclinical data is also emerging on the general safety of many molecular MR imaging agents. In addition, since the guidelines to avoid nephrogenic systemic fibrosis (NSF) were adopted, at most institutions no new cases of NSF have been reported. Nevertheless, in the post-NSF environment, both those developing and using molecular MR imaging agents need to be increasingly aware of safety issues. This awareness should begin with the design of the agent and, even in early preclinical studies, the demonstration of safety and efficacy should both be given high priority. In this review we discuss some of the issues relevant to the design of safe molecular MR imaging agents and highlight the excellent safety profile of those agents that have been used clinically to date.
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Affiliation(s)
- David E Sosnovik
- Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Boston MA ; Department of Cardiology, Massachusetts General Hospital, Harvard Medical School, Boston MA ; Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston MA
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Reddy LH, Arias JL, Nicolas J, Couvreur P. Magnetic nanoparticles: design and characterization, toxicity and biocompatibility, pharmaceutical and biomedical applications. Chem Rev 2012; 112:5818-78. [PMID: 23043508 DOI: 10.1021/cr300068p] [Citation(s) in RCA: 1101] [Impact Index Per Article: 91.8] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- L Harivardhan Reddy
- Laboratoire de Physico-Chimie, Pharmacotechnie et Biopharmacie, Université Paris-Sud XI, UMR CNRS, Faculté de Pharmacie, IFR, Châtenay-Malabry, France
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Aguor ENE, Arslan F, van de Kolk CWA, Nederhoff MGJ, Doevendans PA, van Echteld CJA, Pasterkamp G, Strijkers GJ. Quantitative T 2* assessment of acute and chronic myocardial ischemia/reperfusion injury in mice. MAGMA (NEW YORK, N.Y.) 2012; 25:369-79. [PMID: 22327962 PMCID: PMC3458196 DOI: 10.1007/s10334-012-0304-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2011] [Revised: 01/21/2012] [Accepted: 01/23/2012] [Indexed: 11/25/2022]
Abstract
OBJECT Imaging of myocardial infarct composition is essential to assess efficacy of emerging therapeutics. T (2) (*) mapping has the potential to image myocardial hemorrhage and fibrosis by virtue of its short T (2) (*) . We aimed to quantify T (2) (*) in acute and chronic myocardial ischemia/reperfusion (I/R) injury in mice. MATERIALS AND METHODS I/R-injury was induced in C57BL/6 mice (n = 9). Sham-operated mice (n = 8) served as controls. MRI was performed at baseline, and 1, 7 and 28 days after surgery. MRI at 9.4 T consisted of Cine, T (2) (*) mapping and late-gadolinium-enhancement (LGE). Mice (n = 6) were histologically assessed for hemorrhage and collagen in the fibrotic scar. RESULTS Baseline T (2) (*) values were 17.1 ± 2.0 ms. At day 1, LGE displayed a homogeneous infarct enhancement. T (2) (*) in infarct (12.0 ± 1.1 ms) and remote myocardium (13.9 ± 0.8 ms) was lower than at baseline. On days 7 and 28, LGE was heterogeneous. T (2) (*) in the infarct decreased to 7.9 ± 0.7 and 6.4 ± 0.7 ms, whereas T (2) (*) values in the remote myocardium were 14.2 ± 1.1 and 15.6 ± 1.0 ms. Histology revealed deposition of iron and collagen in parallel with decreased T (2) (*) . CONCLUSION T (2) (*) values are dynamic during infarct development and decrease significantly during scar maturation. In the acute phase, T (2) (*) values in infarcted myocardium differ significantly from those in the chronic phase. T (2) (*) mapping was able to confirm the presence of a chronic infarction in cases where LGE was inconclusive. Hence, T (2) (*) may be used to discriminate between acute and chronic infarctions.
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Affiliation(s)
- Eissa N. E. Aguor
- Department of Cardiology, University Medical Center Utrecht (UMCU), Utrecht, The Netherlands
- Laboratory of Experimental Cardiology, University Medical Center Utrecht (UMCU), Heidelberglaan 100, 3584 CX Utrecht, The Netherlands
- The Netherlands Heart Institute, Utrecht, The Netherlands
| | - Fatih Arslan
- Department of Cardiology, University Medical Center Utrecht (UMCU), Utrecht, The Netherlands
- Laboratory of Experimental Cardiology, University Medical Center Utrecht (UMCU), Heidelberglaan 100, 3584 CX Utrecht, The Netherlands
- The Netherlands Heart Institute, Utrecht, The Netherlands
| | - Cees W. A. van de Kolk
- Department of Cardiology, University Medical Center Utrecht (UMCU), Utrecht, The Netherlands
| | - Marcel G. J. Nederhoff
- Laboratory of Experimental Cardiology, University Medical Center Utrecht (UMCU), Heidelberglaan 100, 3584 CX Utrecht, The Netherlands
- The Netherlands Heart Institute, Utrecht, The Netherlands
| | - Pieter A. Doevendans
- Department of Cardiology, University Medical Center Utrecht (UMCU), Utrecht, The Netherlands
- The Netherlands Heart Institute, Utrecht, The Netherlands
| | - Cees J. A. van Echteld
- Department of Cardiology, University Medical Center Utrecht (UMCU), Utrecht, The Netherlands
| | - Gerard Pasterkamp
- Laboratory of Experimental Cardiology, University Medical Center Utrecht (UMCU), Heidelberglaan 100, 3584 CX Utrecht, The Netherlands
- The Netherlands Heart Institute, Utrecht, The Netherlands
| | - Gustav J. Strijkers
- Biomedical NMR, Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands
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46
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Kircher MF, Willmann JK. Molecular body imaging: MR imaging, CT, and US. part I. principles. Radiology 2012; 263:633-43. [PMID: 22623690 DOI: 10.1148/radiol.12102394] [Citation(s) in RCA: 133] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Molecular imaging, generally defined as noninvasive imaging of cellular and subcellular events, has gained tremendous depth and breadth as a research and clinical discipline in recent years. The coalescence of major advances in engineering, molecular biology, chemistry, immunology, and genetics has fueled multi- and interdisciplinary innovations with the goal of driving clinical noninvasive imaging strategies that will ultimately allow disease identification, risk stratification, and monitoring of therapy effects with unparalleled sensitivity and specificity. Techniques that allow imaging of molecular and cellular events facilitate and go hand in hand with the development of molecular therapies, offering promise for successfully combining imaging with therapy. While traditionally nuclear medicine imaging techniques, in particular positron emission tomography (PET), PET combined with computed tomography (CT), and single photon emission computed tomography, have been the molecular imaging methods most familiar to clinicians, great advances have recently been made in developing imaging techniques that utilize magnetic resonance (MR), optical, CT, and ultrasonographic (US) imaging. In the first part of this review series, we present an overview of the principles of MR imaging-, CT-, and US-based molecular imaging strategies.
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Affiliation(s)
- Moritz F Kircher
- Department of Radiology, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
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Prieto C, Andia ME, von Bary C, Onthank DC, Schaeffter T, Botnar RM. Accelerating three‐dimensional molecular cardiovascular MR imaging using compressed sensing. J Magn Reson Imaging 2012; 36:1362-71. [DOI: 10.1002/jmri.23763] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2011] [Accepted: 06/21/2012] [Indexed: 11/06/2022] Open
Affiliation(s)
- Claudia Prieto
- King's College London, Division of Imaging Sciences, and Biomedical Engineering, London, United Kingdom
- Pontificia Universidad Catolica de Chile, Escuela de Ingenieria, Santiago, Chile
| | - Marcelo E. Andia
- King's College London, Division of Imaging Sciences, and Biomedical Engineering, London, United Kingdom
| | | | | | - Tobias Schaeffter
- King's College London, Division of Imaging Sciences, and Biomedical Engineering, London, United Kingdom
| | - Rene M. Botnar
- King's College London, Division of Imaging Sciences, and Biomedical Engineering, London, United Kingdom
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48
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Akbarzadeh A, Samiei M, Davaran S. Magnetic nanoparticles: preparation, physical properties, and applications in biomedicine. NANOSCALE RESEARCH LETTERS 2012; 7:144. [PMID: 22348683 PMCID: PMC3312841 DOI: 10.1186/1556-276x-7-144] [Citation(s) in RCA: 478] [Impact Index Per Article: 39.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2011] [Accepted: 02/21/2012] [Indexed: 05/18/2023]
Abstract
Finally, we have addressed some relevant findings on the importance of having well-defined synthetic strategies developed for the generation of MNPs, with a focus on particle formation mechanism and recent modifications made on the preparation of monodisperse samples of relatively large quantities not only with similar physical features, but also with similar crystallochemical characteristics. Then, different methodologies for the functionalization of the prepared MNPs together with the characterization techniques are explained. Theorical views on the magnetism of nanoparticles are considered.
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Affiliation(s)
- Abolfazl Akbarzadeh
- Faculty of Pharmacy, Department of Medicinal Chemistry and Drug Applied Research Center Tabriz University of Medical Sciences, Tabriz, 51368, Iran
| | - Mohamad Samiei
- Faculity of Dentistry, Tabriz University of Medical Sciences, Tabriz, 51368, Iran
| | - Soodabeh Davaran
- Faculty of Pharmacy, Department of Medicinal Chemistry and Drug Applied Research Center Tabriz University of Medical Sciences, Tabriz, 51368, Iran
- Faculity of Dentistry, Tabriz University of Medical Sciences, Tabriz, 51368, Iran
- Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, 51368, Iran
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49
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Cardiac magnetic resonance imaging signal characteristics of cardiac tumors in children. J Am Coll Cardiol 2011; 58:1055-6. [PMID: 21867842 DOI: 10.1016/j.jacc.2011.03.058] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2011] [Accepted: 03/29/2011] [Indexed: 11/24/2022]
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50
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Chen HH, Josephson L, Sosnovik DE. Imaging of apoptosis in the heart with nanoparticle technology. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2011; 3:86-99. [PMID: 20945336 DOI: 10.1002/wnan.115] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Apoptosis plays an important role in the loss of cardiomyocytes in both ischemic injury and heart failure. Pioneering work with single photon emission computed tomography imaging of (99)Tc-annexin showed that cell death in the heart could be imaged in vivo. Over the last 5 years a significant amount of experience with annexin-labeled magnetic nanoparticles, principally AnxCLIO-Cy5.5, has also been gained. Here, we review the experience with AnxCLIO-Cy5.5 in the heart and compare this experience to that of earlier studies with (99)Tc-annexin. The imaging of apoptosis with AnxCLIO-Cy5.5 provides valuable insights not only into molecular imaging in the heart but, more broadly, into the use of nanoparticle technology for molecular imaging in general.
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Affiliation(s)
- Howard H Chen
- Center for Molecular Imaging Research, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
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