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Trovarelli L, Mirarchi A, Arcuri C, Bruscoli S, Bereshchenko O, Febo M, Carniato F, Costantino F. Relaxometric properties and biocompatibility of a novel nanostructured fluorinated gadolinium metal-organic framework. Dalton Trans 2024. [PMID: 39264337 DOI: 10.1039/d4dt02134g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2024]
Abstract
A novel Gd-MOF based on tetrafluoro-terephthalic acid has been synthesized and its structure has been solved using X-ray single crystal diffraction data. The compound, with the formula [Gd2(F4BDC)3·H2O]·DMF, is isostructural with other Ln-MOFs based on the same ligand and has been recently reported. Its crystals were also reduced to nanometer size by employing acetic acid or cetyltrimethylammonium bromide (CTAB) as a modulator. The relaxometric properties of the nanoparticles were evaluated in solution by measuring 1H T1 and T2 as a function of the applied magnetic field and temperature. The biocompatibility of Gd-MOFs was evaluated on murine microglial BV-2 and human glioblastoma U251 cell lines. In both cell lines, Gd-MOFs do not modify the cell cycle profile or the activation levels of ERK1/2 and Akt, which are protein-serine/threonine kinases that participate in many signal transduction pathways. These pathways are fundamental in the regulation of a large variety of processes such as cell migration, cell cycle progression, differentiation, cell survival, metabolism, transcription, tumour progression and others. These data indicate that Gd-MOF nanoparticles exhibit high biocompatibility, making them potentially valuable for diagnostic and biomedical applications.
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Affiliation(s)
- Letizia Trovarelli
- Department of Chemistry, Biology and Biotechnologies, University of Perugia, Via Elce di Sotto n 8, 06123, Perugia, Italy.
| | - Alessandra Mirarchi
- Department of Medicine and Surgery, University of Perugia, Piazza Lucio Severi 1, 06132, Perugia, Italy
| | - Cataldo Arcuri
- Department of Medicine and Surgery, University of Perugia, Piazza Lucio Severi 1, 06132, Perugia, Italy
| | - Stefano Bruscoli
- Department of Medicine and Surgery, University of Perugia, Piazza Lucio Severi 1, 06132, Perugia, Italy
| | - Oxana Bereshchenko
- Department of Medicine and Surgery, University of Perugia, Piazza Lucio Severi 1, 06132, Perugia, Italy
| | - Marta Febo
- Department of Medicine and Surgery, University of Perugia, Piazza Lucio Severi 1, 06132, Perugia, Italy
| | - Fabio Carniato
- Department of Science and Technological Innovation, University of Eastern Piedmont "A. Avogadro", Viale Teresa Michel 11, 15121, Alessandria, Italy
| | - Ferdinando Costantino
- Department of Chemistry, Biology and Biotechnologies, University of Perugia, Via Elce di Sotto n 8, 06123, Perugia, Italy.
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van der Molen AJ, Quattrocchi CC, Mallio CA, Dekkers IA. Ten years of gadolinium retention and deposition: ESMRMB-GREC looks backward and forward. Eur Radiol 2024; 34:600-611. [PMID: 37804341 PMCID: PMC10791848 DOI: 10.1007/s00330-023-10281-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 07/30/2023] [Accepted: 08/09/2023] [Indexed: 10/09/2023]
Abstract
In 2014, for the first time, visible hyperintensities on unenhanced T1-weighted images in the nucleus dentatus and globus pallidus of the brain were associated with previous Gadolinium-based contrast agent (GBCA) injections and gadolinium deposition in patients with normal renal function. This led to a frenzy of retrospective studies with varying methodologies that the European Society of Magnetic Resonance in Medicine and Biology Gadolinium Research and Educational Committee (ESMRMB-GREC) summarised in 2019. Now, after 10 years, the members of the ESMRMB-GREC look backward and forward and review the current state of knowledge of gadolinium retention and deposition. CLINICAL RELEVANCE STATEMENT: Gadolinium deposition is associated with the use of linear GBCA but no clinical symptoms have been associated with gadolinium deposition. KEY POINTS : • Traces of Gadolinium-based contrast agent-derived gadolinium can be retained in multiple organs for a prolonged time. • Gadolinium deposition is associated with the use of linear Gadolinium-based contrast agents. • No clinical symptoms have been associated with gadolinium deposition.
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Affiliation(s)
- Aart J van der Molen
- Department of Radiology, C-2S, Leiden University Medical Center, Albinusdreef 2, NL-2333 ZA, Leiden, The Netherlands.
| | - Carlo C Quattrocchi
- Centre for Medical Sciences CISMed, University of Trento, 38122, Trento, Italy
| | - Carlo A Mallio
- Department of Medicine and Surgery, Università Campus Bio-Medico di Roma, Roma, Italy
- Operative Research Unit of Diagnostic Imaging, Fondazione Policlinico Universitario Campus Bio-Medico, Roma, Italy
| | - Ilona A Dekkers
- Department of Radiology, C-2S, Leiden University Medical Center, Albinusdreef 2, NL-2333 ZA, Leiden, The Netherlands
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3
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Khalili Najafabad B, Attaran N, Barati M, Mohammadi Z, Mahmoudi M, Sazgarnia A. Cobalt ferrite nanoparticle for the elimination of CD133+CD44 + and CD44 +CD24 -, in breast and skin cancer stem cells, using non-ionizing treatments. Heliyon 2023; 9:e19893. [PMID: 37810832 PMCID: PMC10556613 DOI: 10.1016/j.heliyon.2023.e19893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 09/02/2023] [Accepted: 09/05/2023] [Indexed: 10/10/2023] Open
Abstract
Background Cancer stem cells (CSCs) are the most challenging issue in cancer treatment, because of their high resistance mechanisms, that can cause tumor recurrence after common cancer treatments such as drug and radiation based therapies, and the insufficient efficiency of common treatments in CSCs removal and the recurrence of tumors after these treatments, it is essential to consider other methods, including non-ionizing treatments likes light-based treatments and magnetic hyperthermia (MHT). Method and material After synthesis, characterization and investigation, the toxicity of novel on A375 and MAD-MB-231 cell lines, magnetic hyperthermia and light-based treatments were applied. MTT assay and flow cytometry was employed to determine cell survival. the influence of combination therapy on CD44 + CD24-and CD133 + CD44+ cell population, Comparison and evaluation of combination treatments was done respectively using Combination Indices (CIs). Result The final nanoparticle has a high efficiency in producing hydroxyl radicals and generating heat in MHT. According to CIs, we can conclude that combined using of light-based treatment and MHT in the presence of final synthesized nanoparticle have synergistic effect and a high ability to reduce the population of stem cells in both cell lines compared to single treatments. Conclusion In this study a novel multi-functional nanoplatform acted well in dual and triple combined treatments, and showed a good performance in the eradication of CSCs, in A375 and MAD-MB-231 cell lines.
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Affiliation(s)
- Bahareh Khalili Najafabad
- Medical Physics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Medical Physics, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Neda Attaran
- Department of Medical Nanotechnology, Applied Biophotonics Research Center, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Mehdi Barati
- Department of Pathobiology and Laboratory Sciences, North Khorasan, University of Medical Science, Bojnurd, Iran
| | - Zahra Mohammadi
- Radiological Technology Department of Actually Paramedical Sciences, Babol University of Medical Science, Babol, Iran
| | - Mahmoud Mahmoudi
- Immunology Research Center, Bu-Ali Research Institute, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Ameneh Sazgarnia
- Medical Physics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Medical Physics, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
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Dimov AV, Li J, Nguyen TD, Roberts AG, Spincemaille P, Straub S, Zun Z, Prince MR, Wang Y. QSM Throughout the Body. J Magn Reson Imaging 2023; 57:1621-1640. [PMID: 36748806 PMCID: PMC10192074 DOI: 10.1002/jmri.28624] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/19/2023] [Accepted: 01/20/2023] [Indexed: 02/08/2023] Open
Abstract
Magnetic materials in tissue, such as iron, calcium, or collagen, can be studied using quantitative susceptibility mapping (QSM). To date, QSM has been overwhelmingly applied in the brain, but is increasingly utilized outside the brain. QSM relies on the effect of tissue magnetic susceptibility sources on the MR signal phase obtained with gradient echo sequence. However, in the body, the chemical shift of fat present within the region of interest contributes to the MR signal phase as well. Therefore, correcting for the chemical shift effect by means of water-fat separation is essential for body QSM. By employing techniques to compensate for cardiac and respiratory motion artifacts, body QSM has been applied to study liver iron and fibrosis, heart chamber blood and placenta oxygenation, myocardial hemorrhage, atherosclerotic plaque, cartilage, bone, prostate, breast calcification, and kidney stone.
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Affiliation(s)
- Alexey V. Dimov
- Department of Radiology, Weill Cornell Medicine, New York, NY, United States
| | - Jiahao Li
- Department of Radiology, Weill Cornell Medicine, New York, NY, United States
| | - Thanh D. Nguyen
- Department of Radiology, Weill Cornell Medicine, New York, NY, United States
| | | | - Pascal Spincemaille
- Department of Radiology, Weill Cornell Medicine, New York, NY, United States
| | - Sina Straub
- Department of Radiology, Mayo Clinic, Jacksonville, FL, United States
| | - Zungho Zun
- Department of Radiology, Weill Cornell Medicine, New York, NY, United States
| | - Martin R. Prince
- Department of Radiology, Weill Cornell Medicine, New York, NY, United States
| | - Yi Wang
- Department of Radiology, Weill Cornell Medicine, New York, NY, United States
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Pisani D, Gioacchini FM, Chiarella G, Astorina A, Ricciardiello F, Scarpa A, Re M, Viola P. Vestibular Impairment in Patients with Vestibular Schwannoma: A Journey through the Pitfalls of Current Literature. Audiol Res 2023; 13:285-303. [PMID: 37102775 PMCID: PMC10135541 DOI: 10.3390/audiolres13020025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/17/2023] [Accepted: 04/06/2023] [Indexed: 04/28/2023] Open
Abstract
Vestibular Schwannoma is the most common tumour of Ponto Cerebellar Angle and is capable of strongly impacting the patient's quality of life. In recent decades, the proposals for the management of the disease have multiplied, just as the diagnostic capacity has improved. While in the past, the primary objective was the preservation of the facial function, and subsequently also of the auditory function, the attention to the vestibular symptomatology, which appears to be one of the main indicators of deterioration of quality of life, is still unsatisfactory. Many authors have tried to provide guidance on the best possible management strategy, but a universally recognized guideline is still lacking. This article offers an overview of the disease and the proposals which have advanced in the last twenty years, evaluating their qualities and defects in a critical reading.
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Affiliation(s)
- Davide Pisani
- Unit of Audiology, Regional Centre of Cochlear Implants and ENT Diseases, Department of Experimental and Clinical Medicine, Magna Graecia University, 88100 Catanzaro, Italy
| | - Federico Maria Gioacchini
- Ear, Nose, and Throat Unit, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, Via Conca 71, 60020 Ancona, Italy
| | - Giuseppe Chiarella
- Unit of Audiology, Regional Centre of Cochlear Implants and ENT Diseases, Department of Experimental and Clinical Medicine, Magna Graecia University, 88100 Catanzaro, Italy
| | - Alessia Astorina
- Unit of Audiology, Regional Centre of Cochlear Implants and ENT Diseases, Department of Experimental and Clinical Medicine, Magna Graecia University, 88100 Catanzaro, Italy
| | | | - Alfonso Scarpa
- Department of Medicine and Surgery, University of Salerno, 84084 Salerno, Italy
| | - Massimo Re
- Ear, Nose, and Throat Unit, Department of Clinical and Molecular Sciences, Polytechnic University of Marche, Via Conca 71, 60020 Ancona, Italy
| | - Pasquale Viola
- Unit of Audiology, Regional Centre of Cochlear Implants and ENT Diseases, Department of Experimental and Clinical Medicine, Magna Graecia University, 88100 Catanzaro, Italy
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Fu S, Cai Z, Liu L, Fu X, Wu C, Du L, Xia C, Lui S, Gong Q, Song B, Ai H. Gadolinium(III) Complex-Backboned Branched Polymers as Imaging Probes for Contrast-Enhanced Magnetic Resonance Angiography. ACS APPLIED MATERIALS & INTERFACES 2023; 15:18311-18322. [PMID: 37000117 DOI: 10.1021/acsami.3c00610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Compared to traditional branched polymers with Gd(III) chelates conjugated on their surface, branched polymers with Gd(III) chelates as the internal skeleton are considered to be a reasonable strategy for preparing efficient magnetic resonance imaging contrast agents. Herein, the Gd(III) ligand DOTA was chosen as the internal skeleton; four different molecular weights (3.5, 5.3, 8.6, and 13.1 kDa) and degrees of branching poly-DOTA branched polymers (P1, P2, P3, and P4) were synthesized by a simple "A2 + B4"-type one-pot polymerization. The Gd(III) chelates of these poly-DOTA branched polymers (P1-Gd, P2-Gd, P3-Gd, and P4-Gd) display excellent kinetic stability, which is significantly higher than those of linear Gd-DTPA and cyclic Gd-DOTA-butrol and slightly lower than that of cyclic Gd-DOTA. The T1 relaxivities of P1-Gd, P2-Gd, P3-Gd, and P4-Gd are 29.4, 38.7, 44.0, and 47.9 Gd mM-1 s-1, respectively, at 0.5 T, which are about 6-11 times higher than that of Gd-DOTA (4.4 Gd mM-1 s-1). P4-Gd was selected for in vivo magnetic resonance angiography (MRA) because of its high kinetic stability, T1 relaxivity, and good biosafety. The results showed excellent MRA effect, sensitive detection of vascular stenosis, and prolonged observation window as compared to Gd-DOTA. Overall, Gd(III) chelates of poly-DOTA branched polymers are good candidates of MRI probes, providing a unique design strategy in which Gd chelation can occur at both the interior and surface of the poly-DOTA branched polymers, resulting in excellent relaxivity enhancement. In vivo animal MRA studies of the probe provide possibilities in discovering small vascular pathologies.
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Affiliation(s)
- Shengxiang Fu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610065, China
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu 610041, China
| | - Zhongyuan Cai
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610065, China
| | - Li Liu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610065, China
| | - Xiaomin Fu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610065, China
| | - Changqiang Wu
- Medical Imaging Key Laboratory of Sichuan Province and School of Medical Imaging, North Sichuan Medical College, Nanchong, 637000, China
| | - Liang Du
- Medical Imaging Key Laboratory of Sichuan Province and School of Medical Imaging, North Sichuan Medical College, Nanchong, 637000, China
| | - Chunchao Xia
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Su Lui
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Qiyong Gong
- Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu 610041, China
- Psychoradiology Research Unit of Chinese Academy of Medical Sciences, Sichuan University, Chengdu 610041, China
| | - Bin Song
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Hua Ai
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610065, China
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
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Feng S, Shen S, Yao Y, Liang M, Chen Y, Liu H. Comparison of different analytical methods for speciation of seven gadolinium-based magnetic resonance imaging contrast agents and the applications in wastewater and whole blood. J Sep Sci 2023; 46:e2200575. [PMID: 36525388 DOI: 10.1002/jssc.202200575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 12/13/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022]
Abstract
Three methods, high-performance liquid chromatography hyphenated with inductively coupled plasma mass spectrometry, high-performance liquid chromatography-tandem mass spectrometry, and ion chromatography, were compared for simultaneous speciation of seven commercial gadolinium-based contrast agents for magnetic resonance imaging. Optimizations of experimental conditions for individual method were conducted, respectively. Methods of high-performance liquid chromatography hyphenated with inductively coupled plasma mass spectrometry and high-performance liquid chromatography-tandem mass spectrometry showed the capability of speciation for all seven target compounds, whereas ion chromatography was only suitable for three of them when using electronic conductivity detector. The limits of detection and limits of qualification by the three methods were compared, and high-performance liquid chromatography hyphenated with inductively coupled plasma mass spectrometry was found to be the most sensitive one. The limits of detection for seven target compounds by high-performance liquid chromatography hyphenated with inductively coupled plasma mass spectrometry were in the range of 0.15-0.55 pg. Thus, high-performance liquid chromatography hyphenated with inductively coupled plasma mass spectrometry was chosen as the final method and successfully applied to speciation analysis of seven gadolinium-based contrast agents in wastewater and whole blood. Compounds of gadoxetic acid disodium, gadobenate dimeglumine, gadodiamide, and gadobentetate dimeglumine were found in wastewater.
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Affiliation(s)
- Shunqing Feng
- Instrumental Analysis & Research Center, Sun Yat-Sen University, Guangzhou, P. R. China
| | - Suyun Shen
- Instrumental Analysis & Research Center, Sun Yat-Sen University, Guangzhou, P. R. China
| | - Yao Yao
- Instrumental Analysis & Research Center, Sun Yat-Sen University, Guangzhou, P. R. China
| | - Minsi Liang
- Instrumental Analysis & Research Center, Sun Yat-Sen University, Guangzhou, P. R. China
| | - Yuxin Chen
- Instrumental Analysis & Research Center, Sun Yat-Sen University, Guangzhou, P. R. China
| | - Hongtao Liu
- Instrumental Analysis & Research Center, Sun Yat-Sen University, Guangzhou, P. R. China
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Afkandeh R, Irannejad M, Abedi I, Rabbani M. Automatic detection of active and inactive multiple sclerosis plaques using the Bayesian approach in susceptibility-weighted imaging. Acta Radiol 2022:2841851221143050. [PMID: 36575588 DOI: 10.1177/02841851221143050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND Susceptibility-weighted imaging (SWI) is efficient in detecting multiple sclerosis (MS) plaques and evaluating the level of disease activity. PURPOSE To automatically detect active and inactive MS plaques in SWI images using a Bayesian approach. MATERIAL AND METHODS A 1.5-T scanner was used to evaluate 147 patients with MS. The area of the plaques along with their active or inactive status were automatically identified using a Bayesian approach. Plaques were given an orange color if they were active and a blue color if they were inactive, based on the preset signal intensity. RESULTS Experimental findings show that the proposed method has a high accuracy rate of 91% and a sensitivity rate of 76% for identifying the type and area of plaques. Inactive plaques were properly identified in 87% of cases, and active plaques in 76% of cases. The Kappa analysis revealed an 80% agreement between expert diagnoses based on contrast-enhanced and FLAIR images and Bayesian inferences in SWI. CONCLUSION The results of our study demonstrated that the proposed method has good accuracy for identifying the MS plaque area as well as for identifying the types of active or inactive plaques in SWI. Therefore, it might be helpful to use the proposed method as a supplemental tool to accelerate the specialist's diagnosis.
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Affiliation(s)
- Rezvan Afkandeh
- Department of Medical Physics, School of Medicine, 48455Isfahan University of Medical Sciences, Isfahan, Iran
| | - Maziar Irannejad
- Department of Electrical Engineering, School of Electrical Engineering, 201564Islamic Azad University Najafabad Branch, Najafabad, Iran
| | - Iraj Abedi
- Department of Medical Physics, School of Medicine, 48455Isfahan University of Medical Sciences, Isfahan, Iran
| | - Masoud Rabbani
- Department of Radiology, School of Medicine, 48455Isfahan University of Medical Sciences, Isfahan, Iran
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Do QN, Lenkinski RE, Tircso G, Kovacs Z. How the Chemical Properties of GBCAs Influence Their Safety Profiles In Vivo. Molecules 2021; 27:58. [PMID: 35011290 PMCID: PMC8746842 DOI: 10.3390/molecules27010058] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 12/18/2021] [Accepted: 12/22/2021] [Indexed: 01/21/2023] Open
Abstract
The extracellular class of gadolinium-based contrast agents (GBCAs) is an essential tool for clinical diagnosis and disease management. In order to better understand the issues associated with GBCA administration and gadolinium retention and deposition in the human brain, the chemical properties of GBCAs such as relative thermodynamic and kinetic stabilities and their likelihood of forming gadolinium deposits in vivo will be reviewed. The chemical form of gadolinium causing the hyperintensity is an open question. On the basis of estimates of total gadolinium concentration present, it is highly unlikely that the intact chelate is causing the T1 hyperintensities observed in the human brain. Although it is possible that there is a water-soluble form of gadolinium that has high relaxitvity present, our experience indicates that the insoluble gadolinium-based agents/salts could have high relaxivities on the surface of the solid due to higher water access. This review assesses the safety of GBCAs from a chemical point of view based on their thermodynamic and kinetic properties, discusses how these properties influence in vivo behavior, and highlights some clinical implications regarding the development of future imaging agents.
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Affiliation(s)
- Quyen N. Do
- Department of Radiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA; (Q.N.D.); (R.E.L.)
| | - Robert E. Lenkinski
- Department of Radiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA; (Q.N.D.); (R.E.L.)
| | - Gyula Tircso
- Department of Physical Chemistry Debrecen, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary;
| | - Zoltan Kovacs
- Advanced Imaging Research Center, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA
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Nagendraraj T, Kumaran SS, Mayilmurugan R. Mn(II) complexes of phenylenediamine based macrocyclic ligands as T 1-MRI contrast agents. J Inorg Biochem 2021; 228:111684. [PMID: 34929541 DOI: 10.1016/j.jinorgbio.2021.111684] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 11/22/2021] [Accepted: 11/29/2021] [Indexed: 01/06/2023]
Abstract
The Mn(II) complexes are emerging as alternative T1-MRI contrast agents (CAs) to the currently available Gd-based CAs. The complexes [Mn(L1)] 1 and [Mn(L2)] 2 of o-phenylenediamine based macrocyclic ligands are reported as T1-CAs for MRI applications. The high spin state of the Mn(II) complexes (S = 5/2) is confirmed by EPR spectra. The complexes showed an irreversible Mn(II)/Mn(III) redox potential at pH 7.28, which became more and less positive at the acidic and alkaline pHs, respectively. The species [MnL], [Mn(LH-1), and [Mn(LH-2) are persisted in solution. Complex 1 is inert towards Ca(II), Mg(II), and Zn(II), whereas complex 2 is inert for Ca(II) and Mg(II) and labile under Zn(II) and Cu(II) ions. Complex 1 showed an r1-relaxivity of 3.27 and 2.32 mM-1 s-1 at 1.41 T, 25, and 37 °C respectively via inner-sphere water relaxation, which is lower than that of 2 (r1, 5.56, and 4.19 mM-1 s-1) at pH 7.28 and 1.41 T. The Mn(II) complexes showed a 2-8% enhancement of r1-relaxivity while lowering the pH to acidic, which corresponds to the release of free Mn(II) ions. In contrast, the r1-relaxivity is dropped to 52% and 20% for 1 and 2 respectively under alkaline pH due to the deprotonation of inner-sphere water. Phantom images obtained on Bruker 'BIOSPEC' 47/40 animal research MRI/MRS scanner showed concentration-dependent brightness. The interaction of human serum albumin (HSA) with 1 and 2 exhibited five times higher r1-relaxivities (11.3 and 22.0 mM-1 s-1 at 1.41 T, respectively).
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Affiliation(s)
- Thavasilingam Nagendraraj
- Bioinorganic Chemistry Laboratory/Physical Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, Tamil Nadu, India
| | - S Senthil Kumaran
- Department of NMR, All India Institute of Medical Sciences, Ansari Nagar, New Delhi 110 029, India
| | - Ramasamy Mayilmurugan
- Bioinorganic Chemistry Laboratory/Physical Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, Tamil Nadu, India.
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11
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MR Imaging Safety Considerations of Gadolinium-Based Contrast Agents: Gadolinium Retention and Nephrogenic Systemic Fibrosis. Magn Reson Imaging Clin N Am 2021; 28:497-507. [PMID: 33040991 DOI: 10.1016/j.mric.2020.06.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Gadolinium (Gd)-based contrast agents (GBCAs) have revolutionized of MR imaging, enabling physicians to obtain life-saving medical information that often cannot be obtained with unenhanced MR imaging or other imaging modalities. Since regulatory approval in 1988, more than 450 million intravenous GBCA doses have been administered worldwide, with an extremely favorable pharmacologic safety profile. Recent evidence has demonstrated, however, that a small fraction of Gd is retained in human tissues. No direct correlation between Gd retention and clinical effects has been confirmed; however, a subset of patients have attributed various symptoms to GBCA exposure. This review details current knowledge regarding GBCA safety.
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12
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Gray Matter Nucleus Hyperintensity After Monthly Triple-Dose Gadopentetate Dimeglumine With Long-term Magnetic Resonance Imaging. Invest Radiol 2021; 55:629-635. [PMID: 32898355 DOI: 10.1097/rli.0000000000000663] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVES Gadolinium deposition is widely believed to occur, but questions regarding accumulation pattern and permanence remain. We conducted a retrospective study of intracranial signal changes on monthly triple-dose contrast-enhanced magnetic resonance imaging (MRI) examinations from the previously published Betaseron vs. Copaxone in Multiple Sclerosis With Triple-Dose Gadolinium and 3-Tesla MRI Endpoints Trial (N = 67) to characterize the dynamics of gadolinium deposition in several deep brain nuclei and track persistence versus washout of gadolinium deposition on long-term follow-up (LTFU) examinations (N = 28) obtained approximately 10 years after enrollment in the Betaseron vs. Copaxone in Multiple Sclerosis With Triple-Dose Gadolinium and 3-Tesla MRI Endpoints Trial. MATERIALS AND METHODS Using T2 and proton density images and using image analysis software (ITK-SNAP), manual regions of interest were created ascribing boundaries of the caudate nucleus, dentate nucleus, globus pallidus, pulvinar, putamen, white matter, and air. Intensity analysis was conducted on T1-weighted fat-saturated (fat-sat) images using the FSL package. A linear rigid-body transform was calculated from the fat-sat image at each target time point to the region of interest segmentation reference time point fat-sat image. Serial MRI signal was analyzed using linear mixed regression modeling with random intercept. Annual MRI signal changes including LTFU scans were assessed with t test. RESULTS During monthly scanning, all gray matter structures demonstrated a significant (P < 0.0001) increase in contrast-to-noise ratio. Yearly changes in deposition showed distinctive patterns for the specific nucleus: globus pallidus showed complete retention, pulvinar showed partial washout, while dentate, caudate, and putamen returned to baseline (ie, complete washout). CONCLUSIONS Monthly increased contrast-to-noise ratio in gray matter nuclei is consistent with gadolinium deposition over time. The study also suggests that some deep gray matter nuclei permanently retain gadolinium, whereas others demonstrate washout of soluble gadolinium.
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Anbu S, Hoffmann SHL, Carniato F, Kenning L, Price TW, Prior TJ, Botta M, Martins AF, Stasiuk GJ. A Single-Pot Template Reaction Towards a Manganese-Based T 1 Contrast Agent. Angew Chem Int Ed Engl 2021; 60:10736-10744. [PMID: 33624910 PMCID: PMC8252504 DOI: 10.1002/anie.202100885] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Indexed: 12/23/2022]
Abstract
Manganese-based contrast agents (MnCAs) have emerged as suitable alternatives to gadolinium-based contrast agents (GdCAs). However, due to their kinetic lability and laborious synthetic procedures, only a few MnCAs have found clinical MRI application. In this work, we have employed a highly innovative single-pot template synthetic strategy to develop a MnCA, MnLMe , and studied the most important physicochemical properties in vitro. MnLMe displays optimized r1 relaxivities at both medium (20 and 64 MHz) and high magnetic fields (300 and 400 MHz) and an enhanced r1b =21.1 mM-1 s-1 (20 MHz, 298 K, pH 7.4) upon binding to BSA (Ka =4.2×103 M-1 ). In vivo studies show that MnLMe is cleared intact into the bladder through renal excretion and has a prolonged blood half-life compared to the commercial GdCA Magnevist. MnLMe shows great promise as a novel MRI contrast agent.
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Affiliation(s)
- Sellamuthu Anbu
- Department of Biomedical SciencesUniversity of HullCottingham RoadHullHU6 7RXUK
- Department of ChemistryUniversity of HullCottingham RoadHullHU6 7RXUK
| | - Sabrina H. L. Hoffmann
- Werner Siemens Imaging CenterDepartment of Preclinical Imaging and RadiopharmacyEberhard Karls University Tübingen, Röntgenweg 13/172076TübingenGermany
| | - Fabio Carniato
- Dipartimento di Scienze e InnovazioneTecnologicaUniversità del Piemonte Orientale “A. Avogadro”Viale Teresa Michel 1115121AlessandriaItaly
| | - Lawrence Kenning
- MRI centreHull Royal Infirmary Hospital NHS TrustAnlaby RoadHullHU3 2JZUK
| | - Thomas W. Price
- Department of Imaging Chemistry and BiologySchool of Biomedical Engineering and Imaging SciencesKing's College LondonFourth Floor Lambeth WingSt Thomas' HospitalLondonSE1 7EHUK
| | - Timothy J. Prior
- Department of ChemistryUniversity of HullCottingham RoadHullHU6 7RXUK
| | - Mauro Botta
- Dipartimento di Scienze e InnovazioneTecnologicaUniversità del Piemonte Orientale “A. Avogadro”Viale Teresa Michel 1115121AlessandriaItaly
| | - Andre F. Martins
- Werner Siemens Imaging CenterDepartment of Preclinical Imaging and RadiopharmacyEberhard Karls University Tübingen, Röntgenweg 13/172076TübingenGermany
- Cluster of Excellence iFIT (EXC 2180) “Image-Guided and Functionally Instructed Tumor Therapies”University of TuebingenGermany
| | - Graeme J. Stasiuk
- Department of Imaging Chemistry and BiologySchool of Biomedical Engineering and Imaging SciencesKing's College LondonFourth Floor Lambeth WingSt Thomas' HospitalLondonSE1 7EHUK
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Anbu S, Hoffmann SHL, Carniato F, Kenning L, Price TW, Prior TJ, Botta M, Martins AF, Stasiuk GJ. A Single-Pot Template Reaction Towards a Manganese-Based T1 Contrast Agent. ANGEWANDTE CHEMIE (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 133:10831-10839. [PMID: 38505690 PMCID: PMC10947048 DOI: 10.1002/ange.202100885] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Indexed: 12/20/2022]
Abstract
Manganese-based contrast agents (MnCAs) have emerged as suitable alternatives to gadolinium-based contrast agents (GdCAs). However, due to their kinetic lability and laborious synthetic procedures, only a few MnCAs have found clinical MRI application. In this work, we have employed a highly innovative single-pot template synthetic strategy to develop a MnCA, MnLMe, and studied the most important physicochemical properties in vitro. MnLMe displays optimized r 1 relaxivities at both medium (20 and 64 MHz) and high magnetic fields (300 and 400 MHz) and an enhanced r 1 b=21.1 mM-1 s-1 (20 MHz, 298 K, pH 7.4) upon binding to BSA (K a=4.2×103 M-1). In vivo studies show that MnLMe is cleared intact into the bladder through renal excretion and has a prolonged blood half-life compared to the commercial GdCA Magnevist. MnLMe shows great promise as a novel MRI contrast agent.
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Affiliation(s)
- Sellamuthu Anbu
- Department of Biomedical SciencesUniversity of HullCottingham RoadHullHU6 7RXUK
- Department of ChemistryUniversity of HullCottingham RoadHullHU6 7RXUK
| | - Sabrina H. L. Hoffmann
- Werner Siemens Imaging CenterDepartment of Preclinical Imaging and RadiopharmacyEberhard Karls University Tübingen, Röntgenweg 13/172076TübingenGermany
| | - Fabio Carniato
- Dipartimento di Scienze e InnovazioneTecnologicaUniversità del Piemonte Orientale “A. Avogadro”Viale Teresa Michel 1115121AlessandriaItaly
| | - Lawrence Kenning
- MRI centreHull Royal Infirmary Hospital NHS TrustAnlaby RoadHullHU3 2JZUK
| | - Thomas W. Price
- Department of Imaging Chemistry and BiologySchool of Biomedical Engineering and Imaging SciencesKing's College LondonFourth Floor Lambeth WingSt Thomas' HospitalLondonSE1 7EHUK
| | - Timothy J. Prior
- Department of ChemistryUniversity of HullCottingham RoadHullHU6 7RXUK
| | - Mauro Botta
- Dipartimento di Scienze e InnovazioneTecnologicaUniversità del Piemonte Orientale “A. Avogadro”Viale Teresa Michel 1115121AlessandriaItaly
| | - Andre F. Martins
- Werner Siemens Imaging CenterDepartment of Preclinical Imaging and RadiopharmacyEberhard Karls University Tübingen, Röntgenweg 13/172076TübingenGermany
- Cluster of Excellence iFIT (EXC 2180) “Image-Guided and Functionally Instructed Tumor Therapies”University of TuebingenGermany
| | - Graeme J. Stasiuk
- Department of Imaging Chemistry and BiologySchool of Biomedical Engineering and Imaging SciencesKing's College LondonFourth Floor Lambeth WingSt Thomas' HospitalLondonSE1 7EHUK
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Piera-Velazquez S, Wermuth PJ, Gomez-Reino JJ, Varga J, Jimenez SA. Chemical exposure-induced systemic fibrosing disorders: Novel insights into systemic sclerosis etiology and pathogenesis. Semin Arthritis Rheum 2020; 50:1226-1237. [PMID: 33059296 DOI: 10.1016/j.semarthrit.2020.09.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 08/19/2020] [Accepted: 09/09/2020] [Indexed: 01/19/2023]
Abstract
Numerous drugs and chemical substances are capable of inducing exaggerated tissue fibrotic responses. The vast majority of these agents cause localized fibrotic tissue reactions or fibrosis confined to specific organs. Although much less frequent, chemically-induced systemic fibrotic disorders have been described, sometimes occurring as temporally confined outbreaks. These include the Toxic Oil Syndrome (TOS), the Eosinophilia-Myalgia Syndrome (EMS), and Nephrogenic Systemic Fibrosis (NSF). Although each of these disorders displays some unique characteristics, they all share crucial features with Systemic Sclerosis (SSc), the prototypic idiopathic systemic fibrotic disease, including vasculopathy, chronic inflammatory cell infiltration of affected tissues, and cutaneous and visceral tissue fibrosis. The study of the mechanisms and molecular alterations involved in the development of the chemically-induced systemic fibrotic disorders has provided valuable clues that may allow elucidation of SSc etiology and pathogenesis. Here, we review relevant aspects of the TOS, EMS, and NSF epidemic outbreaks of chemically-induced systemic fibrosing disorders that provide strong support to the hypothesis that SSc is caused by a toxic or biological agent that following its internalization by endothelial cells induces in genetically predisposed individuals a series of molecular alterations that result in the development of SSc clinical and pathological alterations.
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Affiliation(s)
- Sonsoles Piera-Velazquez
- Jefferson Institute of Molecular Medicine and Scleroderma Center, Thomas Jefferson University, Philadelphia, PA, United States
| | - Peter J Wermuth
- Jefferson Institute of Molecular Medicine and Scleroderma Center, Thomas Jefferson University, Philadelphia, PA, United States
| | - Juan J Gomez-Reino
- Fundacion IDIS, Instituto de Investigacion Sanitaria, Hospital Clinico Universitario, Santiago de Compostela, Spain
| | - John Varga
- Rheumatology Division, North Western Scleroderma Program, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Sergio A Jimenez
- Jefferson Institute of Molecular Medicine and Scleroderma Center, Thomas Jefferson University, Philadelphia, PA, United States
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16
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Wallnöfer EA, Thurner GC, Kremser C, Talasz H, Stollenwerk MM, Helbok A, Klammsteiner N, Albrecht-Schgoer K, Dietrich H, Jaschke W, Debbage P. Albumin-based nanoparticles as contrast medium for MRI: vascular imaging, tissue and cell interactions, and pharmacokinetics of second-generation nanoparticles. Histochem Cell Biol 2020; 155:19-73. [PMID: 33040183 DOI: 10.1007/s00418-020-01919-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/31/2020] [Indexed: 12/14/2022]
Abstract
This multidisciplinary study examined the pharmacokinetics of nanoparticles based on albumin-DTPA-gadolinium chelates, testing the hypothesis that these nanoparticles create a stronger vessel signal than conventional gadolinium-based contrast agents and exploring if they are safe for clinical use. Nanoparticles based on human serum albumin, bearing gadolinium and designed for use in magnetic resonance imaging, were used to generate magnet resonance images (MRI) of the vascular system in rats ("blood pool imaging"). At the low nanoparticle doses used for radionuclide imaging, nanoparticle-associated metals were cleared from the blood into the liver during the first 4 h after nanoparticle application. At the higher doses required for MRI, the liver became saturated and kidney and spleen acted as additional sinks for the metals, and accounted for most processing of the nanoparticles. The multiple components of the nanoparticles were cleared independently of one another. Albumin was detected in liver, spleen, and kidneys for up to 2 days after intravenous injection. Gadolinium was retained in the liver, kidneys, and spleen in significant concentrations for much longer. Gadolinium was present as significant fractions of initial dose for longer than 2 weeks after application, and gadolinium clearance was only complete after 6 weeks. Our analysis could not account quantitatively for the full dose of gadolinium that was applied, but numerous organs were found to contain gadolinium in the collagen of their connective tissues. Multiple lines of evidence indicated intracellular processing opening the DTPA chelates and leading to gadolinium long-term storage, in particular inside lysosomes. Turnover of the stored gadolinium was found to occur in soluble form in the kidneys, the liver, and the colon for up to 3 weeks after application. Gadolinium overload poses a significant hazard due to the high toxicity of free gadolinium ions. We discuss the relevance of our findings to gadolinium-deposition diseases.
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Affiliation(s)
- E A Wallnöfer
- Department of Radiology, Medical University of Innsbruck, Anichstrasse 35, 6020, Innsbruck, Austria
| | - G C Thurner
- Department of Radiology, Medical University of Innsbruck, Anichstrasse 35, 6020, Innsbruck, Austria
- Division of Histology and Embryology, Department of Anatomy, Histology and Embryology, Medical University of Innsbruck, Müllerstrasse 59, 6020, Innsbruck, Austria
| | - C Kremser
- Department of Radiology, Medical University of Innsbruck, Anichstrasse 35, 6020, Innsbruck, Austria
| | - H Talasz
- Division of Clinical Biochemistry, Biocenter, Medical University of Innsbruck, Innrain 80-82, 6020, Innsbruck, Austria
| | - M M Stollenwerk
- Faculty of Health and Society, Biomedical Laboratory Science, University Hospital MAS, Malmö University, 205 06, Malmö, Sweden
- Division of Histology and Embryology, Department of Anatomy, Histology and Embryology, Medical University of Innsbruck, Müllerstrasse 59, 6020, Innsbruck, Austria
| | - A Helbok
- Department of Nuclear Medicine, Innsbruck Medical University, Anichstrasse 35, 6020, Innsbruck, Austria
| | - N Klammsteiner
- Division of Histology and Embryology, Department of Anatomy, Histology and Embryology, Medical University of Innsbruck, Müllerstrasse 59, 6020, Innsbruck, Austria
| | - K Albrecht-Schgoer
- Department of Pharmaceutical Technology, Institute of Pharmacy, Leopold-Franzens-University Innsbruck, Innrain 80-82/IV, 6020, Innsbruck, Austria
- Institute of Cell Genetics, Department for Pharmacology and Genetics, Medical University of Innsbruck, Peter-Mayr-Strasse 1a, 6020, Innsbruck, Austria
| | - H Dietrich
- Central Laboratory Animal Facilities, Innsbruck Medical University, Peter-Mayr-Strasse 4a, 6020, Innsbruck, Austria
| | - W Jaschke
- Department of Radiology, Medical University of Innsbruck, Anichstrasse 35, 6020, Innsbruck, Austria
| | - P Debbage
- Division of Histology and Embryology, Department of Anatomy, Histology and Embryology, Medical University of Innsbruck, Müllerstrasse 59, 6020, Innsbruck, Austria.
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New Strategies in the Design of Paramagnetic CAs. CONTRAST MEDIA & MOLECULAR IMAGING 2020; 2020:4327479. [PMID: 33071681 PMCID: PMC7537686 DOI: 10.1155/2020/4327479] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 07/31/2020] [Accepted: 08/04/2020] [Indexed: 11/17/2022]
Abstract
Nowadays, magnetic resonance imaging (MRI) is the first diagnostic imaging modality for numerous indications able to provide anatomical information with high spatial resolution through the use of magnetic fields and gradients. Indeed, thanks to the characteristic relaxation time of each tissue, it is possible to distinguish between healthy and pathological ones. However, the need to have brighter images to increase differences and catch important diagnostic details has led to the use of contrast agents (CAs). Among them, Gadolinium-based CAs (Gd-CAs) are routinely used in clinical MRI practice. During these last years, FDA highlighted many risks related to the use of Gd-CAs such as nephrotoxicity, heavy allergic effects, and, recently, about the deposition within the brain. These alerts opened a debate about the opportunity to formulate Gd-CAs in a different way but also to the use of alternative and safer compounds to be administered, such as manganese- (Mn-) based agents. In this review, the physical principle behind the role of relaxivity and the T1 boosting will be described in terms of characteristic correlation times and inner and outer spheres. Then, the recent advances in the entrapment of Gd-CAs within nanostructures will be analyzed in terms of relaxivity boosting obtained without the chemical modification of CAs as approved in the chemical practice. Finally, a critical evaluation of the use of manganese-based CAs will be illustrated as an alternative ion to Gd due to its excellent properties and endogenous elimination pathway.
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19
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Kefeni KK, Msagati TAM, Nkambule TT, Mamba BB. Spinel ferrite nanoparticles and nanocomposites for biomedical applications and their toxicity. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 107:110314. [PMID: 31761184 DOI: 10.1016/j.msec.2019.110314] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 09/18/2019] [Accepted: 10/13/2019] [Indexed: 12/17/2022]
Abstract
This review focuses on the biomedical applications and toxicity of spinel ferrite nanoparticles (SFNPs) with more emphasis on the recently published work. A critical review is provided on recent advances of SFNPs applications in biomedical areas. The novelty of SFNPs in addressing the bottleneck problems encountered in the areas of health; in particular, for diagnosis and treatment of tumour cells are well reviewed. Furthermore, research gaps, toxicity of SFNPs and areas which still need more attention are highlighted. Based on the result of this review, the SFNPs have unlimited capacity in cancer treatment, disease diagnosis, magnetic resonance imaging, drug delivery and release. Overall, stepping out of the conventional way of treatment is difficult but also essential in bringing long lasting solution for cancer and other diseases treatment. In fact, the toxicity study and commercialisation of the SFNPs based cancer treatment options are the main challenges and need further study, in order to reduce unforeseen consequences.
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Affiliation(s)
- Kebede K Kefeni
- Nanotechnology and Water Sustainability Research Unit, College of Science, Engineering and Technology, University of South Africa, Florida Science Campus, 1710, South Africa.
| | - Titus A M Msagati
- Nanotechnology and Water Sustainability Research Unit, College of Science, Engineering and Technology, University of South Africa, Florida Science Campus, 1710, South Africa
| | - Thabo Ti Nkambule
- Nanotechnology and Water Sustainability Research Unit, College of Science, Engineering and Technology, University of South Africa, Florida Science Campus, 1710, South Africa
| | - Bhekie B Mamba
- Nanotechnology and Water Sustainability Research Unit, College of Science, Engineering and Technology, University of South Africa, Florida Science Campus, 1710, South Africa; State Key Laboratory of Separation Membranes and Membrane Processes, National Centre for International Joint Research on Membrane Science and Technology, Tianjin, 300387, PR China.
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20
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The gadolinium hypothesis for fibromyalgia and unexplained widespread chronic pain. Med Hypotheses 2019; 129:109240. [PMID: 31371082 DOI: 10.1016/j.mehy.2019.109240] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 04/26/2019] [Accepted: 05/19/2019] [Indexed: 02/01/2023]
Abstract
Fibromyalgia (FM) is a chronic, painful, heterogeneous, and common disorder carrying a substantial socio-economical burden. It lacks effective cures and its aetiology is still unknown. There exists evidence for central and peripheral neurological contribution to the symptoms but grasping the real source of abnormal nervous system sensitization remains an ongoing challenge. There exists an association between an injury/trauma and the onset of the symptoms, but a causal relationship has not been yet sufficiently supported by scientific evidence. I postulate a role for gadolinium-based contrast agents and retention of gadolinium in the body. This conjecture breaks the hypothesis of a direct role for a physical injury/trauma per se in favour of an indirect one by the subsequent diagnostic procedures. It creates a new link between retention of gadolinium in the body and painful conditions as FM and unexplained chronic widespread pain reported after a trauma, surgery, or medical illness. Experimental evidence demonstrates possible retention of gadolinium species in human body, still lacking conclusive answers on their pathological consequences. Notwithstanding, there exist some initial data that report unexplained chronic widespread pain and symptoms of FM in those patients: they are suggestive for pathological consequences associated with gadolinium retention. Besides clear compelling symptoms overlapping, biochemical findings are provided to sustain the hypothesis of a role for gadolinium in the disease process focusing on neurotransmitters, endogenous metal cations, cytokines, and muscle tissue. Experimental findings strongly support the hypothesis of impairment at the cellular, intracellular, and systemic levels in FM. And these data are highly compatible with collateral effects associated with the interference of the gadolinium ion and its pharmaceutical chelates into biochemical pathways in vivo. The hypothesis presented in this article, along with the support of scientific evidence, links FM and unexplained chronic widespread pain reported after a trauma, surgery, or medical illness to retention of gadolinium in the body. If the hypothesis is confirmed, it could improve diagnosis and prevention, while providing a ground for development of new treatments.
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Attari H, Cao Y, Elmholdt TR, Zhao Y, Prince MR. A Systematic Review of 639 Patients with Biopsy-confirmed Nephrogenic Systemic Fibrosis. Radiology 2019; 292:376-386. [PMID: 31264946 DOI: 10.1148/radiol.2019182916] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Background Although nephrogenic systemic fibrosis (NSF) affects the use of gadolinium-based contrast agents (GBCAs) in MRI, there continues to be limited knowledge because of the small number of patients with NSF. Purpose To perform a systematic review of NSF. Materials and Methods PubMed database was searched by using the term "Nephrogenic systemic fibrosis" from January 2000 to February 2019. Articles reporting details on individual patients with NSF diagnosis on the basis of both clinical presentations and biopsy confirmation were included. Data were pooled and authors were contacted for clarifications. Rates of NSF were compared through 2008 versus after 2008 and for group I versus group II GBCAs, assuming equal market share. Results Included were 639 patients from 173 articles. Data regarding sex were found for 295 men and 254 women. Age at NSF symptom onset was reported for 177 patients (mean, 49 years ± 16 [standard deviation]; age range, 6-87 years). There were 529 patients with documented exposure to GBCAs including gadodiamide (n = 307), gadopentetate dimeglumine (n = 49), gadoversetamide (n = 6), gadobutrol (n = 1), gadobenate dimeglumine (n = 1), multiple (n = 41), and unknown (n = 120). Among patients with previous exposure, only seven patients were administered GBCA after 2008, yielding a lower rate of NSF after 2008 (P < .001). There were motion limitations in 70.8% (296 of 418) of patients, indicating a more serious debilitation. Associated factors reported for NSF included exposure to GBCA group I (P < .001), dialysis, proinflammatory conditions, hyperphosphatemia, β-blockers, and epoetin. For 341 patients with follow-up, 12 patients were cured and 72 patients partially improved including one during pregnancy. Among those 84 patients reported as cured or improved, in 34 patients cure or improvement occurred after renal function restoration. Four deaths were attributed to NSF. Conclusion Although 639 patients with biopsy-confirmed nephrogenic systemic fibrosis were reported, only seven were after gadolinium-based contrast agent exposure after 2008, indicating that regulatory actions and practice changes have been effective preventive measures. Improvement and sometimes cure with renal function restoration are now possible. © RSNA, 2019 See also the editorial by Davenport in this issue.
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Affiliation(s)
- Hanieh Attari
- From the Department of Radiology, Weill Cornell Medical College & New York Presbyterian Hospital, 416 E 55th St, New York, NY 10022 (H.A., Y.Z., M.R.P.); Department of Radiology, Wayne State University/Detroit Medical Center, Detroit, Mich (Y.C.); Department of Children and Adolescent Psychiatry, Aarhus University Hospital, Aarhus, Denmark (T.R.E.); and Department of Radiology, Columbia University College of Physicians and Surgeons, New York, NY (M.R.P.)
| | - Yan Cao
- From the Department of Radiology, Weill Cornell Medical College & New York Presbyterian Hospital, 416 E 55th St, New York, NY 10022 (H.A., Y.Z., M.R.P.); Department of Radiology, Wayne State University/Detroit Medical Center, Detroit, Mich (Y.C.); Department of Children and Adolescent Psychiatry, Aarhus University Hospital, Aarhus, Denmark (T.R.E.); and Department of Radiology, Columbia University College of Physicians and Surgeons, New York, NY (M.R.P.)
| | - Tina R Elmholdt
- From the Department of Radiology, Weill Cornell Medical College & New York Presbyterian Hospital, 416 E 55th St, New York, NY 10022 (H.A., Y.Z., M.R.P.); Department of Radiology, Wayne State University/Detroit Medical Center, Detroit, Mich (Y.C.); Department of Children and Adolescent Psychiatry, Aarhus University Hospital, Aarhus, Denmark (T.R.E.); and Department of Radiology, Columbia University College of Physicians and Surgeons, New York, NY (M.R.P.)
| | - Yize Zhao
- From the Department of Radiology, Weill Cornell Medical College & New York Presbyterian Hospital, 416 E 55th St, New York, NY 10022 (H.A., Y.Z., M.R.P.); Department of Radiology, Wayne State University/Detroit Medical Center, Detroit, Mich (Y.C.); Department of Children and Adolescent Psychiatry, Aarhus University Hospital, Aarhus, Denmark (T.R.E.); and Department of Radiology, Columbia University College of Physicians and Surgeons, New York, NY (M.R.P.)
| | - Martin R Prince
- From the Department of Radiology, Weill Cornell Medical College & New York Presbyterian Hospital, 416 E 55th St, New York, NY 10022 (H.A., Y.Z., M.R.P.); Department of Radiology, Wayne State University/Detroit Medical Center, Detroit, Mich (Y.C.); Department of Children and Adolescent Psychiatry, Aarhus University Hospital, Aarhus, Denmark (T.R.E.); and Department of Radiology, Columbia University College of Physicians and Surgeons, New York, NY (M.R.P.)
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22
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Beydemir Ş, Türkeş C, Yalçın A. Gadolinium-based contrast agents: in vitro paraoxonase 1 inhibition, in silico studies. Drug Chem Toxicol 2019; 44:508-517. [PMID: 31179770 DOI: 10.1080/01480545.2019.1620266] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Medications show their biological effects by interaction with enzymes, which have been known to play an essential role in the pathogenesis of many diseases. Inhibition or induction of drug metabolizing enzymes has an essential place in the drug design for many kinds of diseases including cardiovascular, neurological, metabolic, and cancer. The main goal of the current study is to contribute to this growing drug design field by observing PON1-drug interactions. In recent years, the safety of gadolinium-based contrast agents (GBCAs) used in magnetic resonance imaging (MRI) has discussed. In the present study, paraoxonase 1 (PON1) enzyme was purified from human serum by simple chromatographic methods with 4095.24 EU mg-1 protein specific activity. The inhibitory activities of gadoteric acid, gadopentetic acid, gadoxetate disodium, and gadodiamide were investigated on PON1 activity of the enzyme. IC50 values were found in the range of 51.28 ± 0.14 to 285.80 ± 0.96 mM. Ki constants were found as 67.95 ± 0.60 mM, 104.97 ± 0.96 mM, 202.33 ± 1.75 mM, and 299.43 ± 2.64 mM for gadoteric acid, gadopentetic acid, gadoxetate disodium, and gadodiamide, respectively. While the inhibition types are determined as competitive of gadoxetate disodium and gadodiamide by the Lineweaver-Burk curves, it was noncompetitive for other compounds. In addition, the molecular docking analyses of gadoxetate disodium and gadodiamide were carried out to understand the binding interactions on the active site of the PON1 enzyme. The structure-activity relationship (SAR) of the drugs was established on the basis of different substituents and their positions in the compounds.
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Affiliation(s)
- Şükrü Beydemir
- Department of Biochemistry, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
| | - Cüneyt Türkeş
- Department of Biochemistry, Faculty of Pharmacy, Erzincan Binali Yıldırım University, Erzincan, Turkey
| | - Ahmet Yalçın
- Department of Radiology, Faculty of Medicine, Erzincan Binali Yıldırım University, Erzincan, Turkey
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Khannam M, Sahoo SK, Mukherjee C. Effect of Ligand Chirality and Hyperconjugation on the Thermodynamic Stability of a Tris(aquated) GdIII
Complex: Synthesis, Characterization, and T
1
-Weighted Phantom MR Image Study. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mahmuda Khannam
- Department of Chemistry; Indian Institute of Technology Guwahati; 781039 Guwahati Assam India
| | - Suban K. Sahoo
- Department of Applied Chemistry; S.V. National Institute of Technology; 395007 Surat Gujarat India
| | - Chandan Mukherjee
- Department of Chemistry; Indian Institute of Technology Guwahati; 781039 Guwahati Assam India
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Koiso T, Yamamoto M, Watanabe S, Barfod BE. Signal intensity increases in dentate nucleus/globus pallidus/pulvinar on unenhanced T1WI MR images after multiple examinations with gadodiamide. Neuroradiol J 2019; 32:215-224. [PMID: 30924388 DOI: 10.1177/1971400919839646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND AND PURPOSE Elevated signal intensity (SI) in the dentate nucleus (DN), globus pallidus (GP) and pulvinar (PUL) was reportedly observed on unenhanced T1-weighted (T1WI) magnetic resonance (MR) images in patients receiving multiple enhanced MR examinations. We aimed to clarify whether this phenomenon influences the long-term neurological status of patients. MATERIALS AND METHODS We studied 196 radiosurgically treated patients undergoing ≥10 MR examinations using a single dose of gadodiamide and the same 1.5 Tesla MR unit. SI ratios were calculated by referencing the brainstem (BS) for the DN and the thalamus (TH) for the GP and PUL. We compared the SI ratios at the first, fifth, and 10th, and at the most recent examinations. The neurological symptoms of all 196 patients were assessed at each MR examination by one of the authors (MY). RESULTS The DN/BS and GP/TH SI ratios were significantly increased at the fifth examination ( p < .0001, p = 0.0094) and, thereafter, gradually increased. Although the PUL/TH SI ratio was not significantly increased at the fifth examination ( p = 0.2515), a significant increase was noted at the 10th examination ( p < .0001). There were no significant predictive factors for DN/BS SI increases. Younger age, no brain metastasis, and normal estimated glomerular filtration rate were related to GP/TH SI ratio increases ( p = 0.0308, p = 0.0001, p = 0.0306). Higher age and total bilirubin level were related to an increased PUL/TH SI ratio ( p = 0.0276, p = 0.0097). No patients experienced gadodiamide-related health problems. CONCLUSIONS Although the SI ratios rose as numbers of gadodiamide administrations increased, no adverse health effects have developed to date.
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Affiliation(s)
- Takao Koiso
- 1 Katsuta Hospital Mito GammaHouse, Hitachinaka, Japan.,2 Department of Neurosurgery, Faculty of Medicine, University of Tsukuba, Japan
| | - Masaaki Yamamoto
- 1 Katsuta Hospital Mito GammaHouse, Hitachinaka, Japan.,3 Department of Neurosurgery, Tokyo Women's Medical University Medical Center East, Japan
| | - Shinya Watanabe
- 2 Department of Neurosurgery, Faculty of Medicine, University of Tsukuba, Japan
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Abstract
The search for high relaxivities and increased specificity continues to be central to the development of paramagnetic contrast agents for magnetic resonance imaging (MRI). Ferritin, due to its unique surface properties, architecture, and biocompatibility, has emerged as a natural nanocage that can potentially help to reach both these goals. This review aims to highlight recent advances in the use of ferritin as a nanoplatform for the delivery of metal-based MRI contrast agents (containing Gd3+, Mn2+, or Fe2O3) alone or in combination with active molecules used for therapeutic purposes. The collected results unequivocally show that the use of ferritin for contrast agent delivery leads to more accurate imaging of cancer cells and a significantly improved targeted therapy.
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Gadolinium as an Emerging Microcontaminant in Water Resources: Threats and Opportunities. GEOSCIENCES 2019. [DOI: 10.3390/geosciences9020093] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
As a result of high doses of paramagnetic gadolinium (Gd) chelates administered in magnetic resonance imaging (MRI) exams, their unmetabolized excretion, and insufficient removal in wastewater treatment plants (WWTPs), large amounts of anthropogenic Gd (Gdanth) are released into surface water. The upward trend of gadolinium-based contrast agent (Gd-CA) administrations is expected to continue growing and consequently higher and higher anthropogenic Gd concentrations are annually recorded in water resources, which can pose a great threat to aquatic organisms and human beings. In addition, the feasibility of Gd retention in patients administered with Gd-CAs repeatedly, and even potentially fatal diseases, including nephrogenic systemic fibrosis (NSF), due to trace amounts of Gd have recently arisen severe health concerns. Thus, there is a need to investigate probable adverse health effects of currently marketed Gd-CAs meticulously and to modify the actual approach in using Gd contrast media in daily practice in order to minimize unknown possible health risks. Furthermore, the employment of enhanced wastewater treatment processes that are capable of removing the stable contrast agents, and the evaluation of the ecotoxicity of Gd chelates and human exposure to these emerging contaminants through dermal and ingestion pathways deserve more attention. On the other hand, point source releases of anthropogenic Gd into the aquatic environment presents the opportunity to assess surface water—groundwater interactions and trace the fate of wastewater plume as a proxy for the potential presence of other microcontaminants associated with treated wastewater in freshwater and marine systems.
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Clases D, Fingerhut S, Jeibmann A, Sperling M, Doble P, Karst U. LA-ICP-MS/MS improves limits of detection in elemental bioimaging of gadolinium deposition originating from MRI contrast agents in skin and brain tissues. J Trace Elem Med Biol 2019; 51:212-218. [PMID: 30466933 DOI: 10.1016/j.jtemb.2018.10.021] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 09/18/2018] [Accepted: 10/29/2018] [Indexed: 10/28/2022]
Abstract
A novel analytical method to detect the retention of gadolinium from contrast agents for magnetic resonance imaging (MRI) in tissue samples of patients is presented. It is based on laser ablation - inductively coupled plasma - triple quadrupole - mass spectrometry (LA-ICP-MS/MS). Both Gd and P were monitored with a mass shift of +16, corresponding to mono-oxygenated species, as well as Zn, Ca, and Fe on-mass. This method resulted in a significantly reduced background and improved limits of detection not only for phosphorus, but also for gadolinium. These improvements were essential to perform elemental bioimaging with improved resolution of 5 μm x 5 μm, allowing the detection of small Gd deposits in fibrotic skin and brain tumour tissue with diameters of approximately 50 μm. Detailed analyses of these regions revealed that most Gd was accompanied with P and Ca, indicating co-precipitation.
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Affiliation(s)
- David Clases
- University of Münster, Institute of Inorganic and Analytical Chemistry, Corrensstr. 30, 48149, Münster, Germany; Elemental Bioimaging Facility, University of Technology Sydney, Broadway, 2007, NSW, Australia
| | - Stefanie Fingerhut
- University of Münster, Institute of Inorganic and Analytical Chemistry, Corrensstr. 30, 48149, Münster, Germany
| | - Astrid Jeibmann
- University Hospital Münster, Institute of Neuropathology, Pottkamp 2, 48149, Münster, Germany
| | - Michael Sperling
- University of Münster, Institute of Inorganic and Analytical Chemistry, Corrensstr. 30, 48149, Münster, Germany; European Virtual Institute for Speciation Analysis (EVISA), Mendelstraße 11, 48149, Münster, Germany
| | - Philip Doble
- Elemental Bioimaging Facility, University of Technology Sydney, Broadway, 2007, NSW, Australia
| | - Uwe Karst
- University of Münster, Institute of Inorganic and Analytical Chemistry, Corrensstr. 30, 48149, Münster, Germany.
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Gianolio E, Gregorio ED, Aime S. Chemical Insights into the Issues of Gd Retention in the Brain and Other Tissues Upon the Administration of Gd-Containing MRI Contrast Agents. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201801220] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Eliana Gianolio
- Dipartimento di Biotecnologie Molecolari e Scienze per la Salute; Centro di Imaging molecolare; Università degli Studi di Torino; Via Nizza 52 10126 Torino Italy
| | - Enza Di Gregorio
- Dipartimento di Biotecnologie Molecolari e Scienze per la Salute; Centro di Imaging molecolare; Università degli Studi di Torino; Via Nizza 52 10126 Torino Italy
| | - Silvio Aime
- Dipartimento di Biotecnologie Molecolari e Scienze per la Salute; Centro di Imaging molecolare; Università degli Studi di Torino; Via Nizza 52 10126 Torino Italy
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Burnett C, Wright P, Keenan AM, Redmond A, Ridgway J. Magnetic Resonance Imaging of synovitis in knees of patients with osteoarthritis without injected contrast agents using T1 quantification. Radiography (Lond) 2018; 24:283-288. [DOI: 10.1016/j.radi.2018.04.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 04/20/2018] [Accepted: 04/23/2018] [Indexed: 10/16/2022]
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The Critical Need for Pediatric and Juvenile Animal Research Addressing Gadolinium Retention in the Developing Body. Invest Radiol 2018; 54:72-75. [PMID: 30273280 DOI: 10.1097/rli.0000000000000516] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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McDonald RJ, Levine D, Weinreb J, Kanal E, Davenport MS, Ellis JH, Jacobs PM, Lenkinski RE, Maravilla KR, Prince MR, Rowley HA, Tweedle MF, Kressel HY. Gadolinium Retention: A Research Roadmap from the 2018 NIH/ACR/RSNA Workshop on Gadolinium Chelates. Radiology 2018; 289:517-534. [PMID: 30204075 DOI: 10.1148/radiol.2018181151] [Citation(s) in RCA: 189] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Gadolinium-based contrast agents (GBCAs) have revolutionized MRI, enabling physicians to obtain crucial life-saving medical information that often cannot be obtained with other imaging modalities. Since initial approval in 1988, over 450 million intravenous GBCA doses have been administered worldwide, with an extremely favorable pharmacologic safety profile; however, recent information has raised new concerns over the safety of GBCAs. Mounting evidence has shown there is long-term retention of gadolinium in human tissues. Further, a small subset of patients have attributed a constellation of symptoms to GBCA exposure, although the association of these symptoms with GBCA administration or gadolinium retention has not been proven by scientific investigation. Despite evidence that macrocyclic GBCAs show less gadolinium retention than linear GBCAs, the safety implications of gadolinium retention are unknown. The mechanism and chemical forms of gadolinium retention, as well as the biologic activity and clinical importance of these retained gadolinium species, remain poorly understood and underscore the need for additional research. In February 2018, an international meeting was held in Bethesda, Md, at the National Institutes of Health to discuss the current literature and knowledge gaps about gadolinium retention, to prioritize future research initiatives to better understand this phenomenon, and to foster collaborative standardized studies. The greatest priorities are to determine (a) if gadolinium retention adversely affects the function of human tissues, (b) if retention is causally associated with short- or long-term clinical manifestations of disease, and (c) if vulnerable populations, such as children, are at greater risk for experiencing clinical disease. The purpose of the research roadmap is to highlight important information that is not known and to identify and prioritize needed research. ©RSNA, 2018 Online supplemental material is available for this article .
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Affiliation(s)
- Robert J McDonald
- From the Division of Neuroradiology, Department of Radiology, Mayo Clinic, Rochester, Minn (R.J.M.); Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA 02215 (D.L., H.Y.K.); Department of Radiology & Biomedical Imaging, Yale School of Medicine, New Haven, Conn (J.W.); Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, Pa (E.K.); Department of Radiology, University of Michigan Health System, Ann Arbor, Mich (M.S.D., J.H.E.); Cancer Imaging Program, National Institutes of Health, National Cancer Institute, Bethesda, Md (P.M.J.); Department of Radiology, UT Southwestern Medical Center, Dallas, Tex (R.E.L.); Department of Radiology, University of Washington, Seattle, Wash (K.R.M.); Department of Radiology, Cornell and Columbia Universities, New York, NY (M.R.P.); Department of Radiology, University of Wisconsin, Madison, Wis (H.A.R.); and Department of Radiology, The Ohio State University, Columbus, Ohio (M.F.T.)
| | - Deborah Levine
- From the Division of Neuroradiology, Department of Radiology, Mayo Clinic, Rochester, Minn (R.J.M.); Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA 02215 (D.L., H.Y.K.); Department of Radiology & Biomedical Imaging, Yale School of Medicine, New Haven, Conn (J.W.); Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, Pa (E.K.); Department of Radiology, University of Michigan Health System, Ann Arbor, Mich (M.S.D., J.H.E.); Cancer Imaging Program, National Institutes of Health, National Cancer Institute, Bethesda, Md (P.M.J.); Department of Radiology, UT Southwestern Medical Center, Dallas, Tex (R.E.L.); Department of Radiology, University of Washington, Seattle, Wash (K.R.M.); Department of Radiology, Cornell and Columbia Universities, New York, NY (M.R.P.); Department of Radiology, University of Wisconsin, Madison, Wis (H.A.R.); and Department of Radiology, The Ohio State University, Columbus, Ohio (M.F.T.)
| | - Jeffrey Weinreb
- From the Division of Neuroradiology, Department of Radiology, Mayo Clinic, Rochester, Minn (R.J.M.); Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA 02215 (D.L., H.Y.K.); Department of Radiology & Biomedical Imaging, Yale School of Medicine, New Haven, Conn (J.W.); Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, Pa (E.K.); Department of Radiology, University of Michigan Health System, Ann Arbor, Mich (M.S.D., J.H.E.); Cancer Imaging Program, National Institutes of Health, National Cancer Institute, Bethesda, Md (P.M.J.); Department of Radiology, UT Southwestern Medical Center, Dallas, Tex (R.E.L.); Department of Radiology, University of Washington, Seattle, Wash (K.R.M.); Department of Radiology, Cornell and Columbia Universities, New York, NY (M.R.P.); Department of Radiology, University of Wisconsin, Madison, Wis (H.A.R.); and Department of Radiology, The Ohio State University, Columbus, Ohio (M.F.T.)
| | - Emanuel Kanal
- From the Division of Neuroradiology, Department of Radiology, Mayo Clinic, Rochester, Minn (R.J.M.); Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA 02215 (D.L., H.Y.K.); Department of Radiology & Biomedical Imaging, Yale School of Medicine, New Haven, Conn (J.W.); Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, Pa (E.K.); Department of Radiology, University of Michigan Health System, Ann Arbor, Mich (M.S.D., J.H.E.); Cancer Imaging Program, National Institutes of Health, National Cancer Institute, Bethesda, Md (P.M.J.); Department of Radiology, UT Southwestern Medical Center, Dallas, Tex (R.E.L.); Department of Radiology, University of Washington, Seattle, Wash (K.R.M.); Department of Radiology, Cornell and Columbia Universities, New York, NY (M.R.P.); Department of Radiology, University of Wisconsin, Madison, Wis (H.A.R.); and Department of Radiology, The Ohio State University, Columbus, Ohio (M.F.T.)
| | - Matthew S Davenport
- From the Division of Neuroradiology, Department of Radiology, Mayo Clinic, Rochester, Minn (R.J.M.); Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA 02215 (D.L., H.Y.K.); Department of Radiology & Biomedical Imaging, Yale School of Medicine, New Haven, Conn (J.W.); Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, Pa (E.K.); Department of Radiology, University of Michigan Health System, Ann Arbor, Mich (M.S.D., J.H.E.); Cancer Imaging Program, National Institutes of Health, National Cancer Institute, Bethesda, Md (P.M.J.); Department of Radiology, UT Southwestern Medical Center, Dallas, Tex (R.E.L.); Department of Radiology, University of Washington, Seattle, Wash (K.R.M.); Department of Radiology, Cornell and Columbia Universities, New York, NY (M.R.P.); Department of Radiology, University of Wisconsin, Madison, Wis (H.A.R.); and Department of Radiology, The Ohio State University, Columbus, Ohio (M.F.T.)
| | - James H Ellis
- From the Division of Neuroradiology, Department of Radiology, Mayo Clinic, Rochester, Minn (R.J.M.); Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA 02215 (D.L., H.Y.K.); Department of Radiology & Biomedical Imaging, Yale School of Medicine, New Haven, Conn (J.W.); Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, Pa (E.K.); Department of Radiology, University of Michigan Health System, Ann Arbor, Mich (M.S.D., J.H.E.); Cancer Imaging Program, National Institutes of Health, National Cancer Institute, Bethesda, Md (P.M.J.); Department of Radiology, UT Southwestern Medical Center, Dallas, Tex (R.E.L.); Department of Radiology, University of Washington, Seattle, Wash (K.R.M.); Department of Radiology, Cornell and Columbia Universities, New York, NY (M.R.P.); Department of Radiology, University of Wisconsin, Madison, Wis (H.A.R.); and Department of Radiology, The Ohio State University, Columbus, Ohio (M.F.T.)
| | - Paula M Jacobs
- From the Division of Neuroradiology, Department of Radiology, Mayo Clinic, Rochester, Minn (R.J.M.); Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA 02215 (D.L., H.Y.K.); Department of Radiology & Biomedical Imaging, Yale School of Medicine, New Haven, Conn (J.W.); Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, Pa (E.K.); Department of Radiology, University of Michigan Health System, Ann Arbor, Mich (M.S.D., J.H.E.); Cancer Imaging Program, National Institutes of Health, National Cancer Institute, Bethesda, Md (P.M.J.); Department of Radiology, UT Southwestern Medical Center, Dallas, Tex (R.E.L.); Department of Radiology, University of Washington, Seattle, Wash (K.R.M.); Department of Radiology, Cornell and Columbia Universities, New York, NY (M.R.P.); Department of Radiology, University of Wisconsin, Madison, Wis (H.A.R.); and Department of Radiology, The Ohio State University, Columbus, Ohio (M.F.T.)
| | - Robert E Lenkinski
- From the Division of Neuroradiology, Department of Radiology, Mayo Clinic, Rochester, Minn (R.J.M.); Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA 02215 (D.L., H.Y.K.); Department of Radiology & Biomedical Imaging, Yale School of Medicine, New Haven, Conn (J.W.); Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, Pa (E.K.); Department of Radiology, University of Michigan Health System, Ann Arbor, Mich (M.S.D., J.H.E.); Cancer Imaging Program, National Institutes of Health, National Cancer Institute, Bethesda, Md (P.M.J.); Department of Radiology, UT Southwestern Medical Center, Dallas, Tex (R.E.L.); Department of Radiology, University of Washington, Seattle, Wash (K.R.M.); Department of Radiology, Cornell and Columbia Universities, New York, NY (M.R.P.); Department of Radiology, University of Wisconsin, Madison, Wis (H.A.R.); and Department of Radiology, The Ohio State University, Columbus, Ohio (M.F.T.)
| | - Kenneth R Maravilla
- From the Division of Neuroradiology, Department of Radiology, Mayo Clinic, Rochester, Minn (R.J.M.); Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA 02215 (D.L., H.Y.K.); Department of Radiology & Biomedical Imaging, Yale School of Medicine, New Haven, Conn (J.W.); Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, Pa (E.K.); Department of Radiology, University of Michigan Health System, Ann Arbor, Mich (M.S.D., J.H.E.); Cancer Imaging Program, National Institutes of Health, National Cancer Institute, Bethesda, Md (P.M.J.); Department of Radiology, UT Southwestern Medical Center, Dallas, Tex (R.E.L.); Department of Radiology, University of Washington, Seattle, Wash (K.R.M.); Department of Radiology, Cornell and Columbia Universities, New York, NY (M.R.P.); Department of Radiology, University of Wisconsin, Madison, Wis (H.A.R.); and Department of Radiology, The Ohio State University, Columbus, Ohio (M.F.T.)
| | - Martin R Prince
- From the Division of Neuroradiology, Department of Radiology, Mayo Clinic, Rochester, Minn (R.J.M.); Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA 02215 (D.L., H.Y.K.); Department of Radiology & Biomedical Imaging, Yale School of Medicine, New Haven, Conn (J.W.); Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, Pa (E.K.); Department of Radiology, University of Michigan Health System, Ann Arbor, Mich (M.S.D., J.H.E.); Cancer Imaging Program, National Institutes of Health, National Cancer Institute, Bethesda, Md (P.M.J.); Department of Radiology, UT Southwestern Medical Center, Dallas, Tex (R.E.L.); Department of Radiology, University of Washington, Seattle, Wash (K.R.M.); Department of Radiology, Cornell and Columbia Universities, New York, NY (M.R.P.); Department of Radiology, University of Wisconsin, Madison, Wis (H.A.R.); and Department of Radiology, The Ohio State University, Columbus, Ohio (M.F.T.)
| | - Howard A Rowley
- From the Division of Neuroradiology, Department of Radiology, Mayo Clinic, Rochester, Minn (R.J.M.); Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA 02215 (D.L., H.Y.K.); Department of Radiology & Biomedical Imaging, Yale School of Medicine, New Haven, Conn (J.W.); Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, Pa (E.K.); Department of Radiology, University of Michigan Health System, Ann Arbor, Mich (M.S.D., J.H.E.); Cancer Imaging Program, National Institutes of Health, National Cancer Institute, Bethesda, Md (P.M.J.); Department of Radiology, UT Southwestern Medical Center, Dallas, Tex (R.E.L.); Department of Radiology, University of Washington, Seattle, Wash (K.R.M.); Department of Radiology, Cornell and Columbia Universities, New York, NY (M.R.P.); Department of Radiology, University of Wisconsin, Madison, Wis (H.A.R.); and Department of Radiology, The Ohio State University, Columbus, Ohio (M.F.T.)
| | - Michael F Tweedle
- From the Division of Neuroradiology, Department of Radiology, Mayo Clinic, Rochester, Minn (R.J.M.); Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA 02215 (D.L., H.Y.K.); Department of Radiology & Biomedical Imaging, Yale School of Medicine, New Haven, Conn (J.W.); Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, Pa (E.K.); Department of Radiology, University of Michigan Health System, Ann Arbor, Mich (M.S.D., J.H.E.); Cancer Imaging Program, National Institutes of Health, National Cancer Institute, Bethesda, Md (P.M.J.); Department of Radiology, UT Southwestern Medical Center, Dallas, Tex (R.E.L.); Department of Radiology, University of Washington, Seattle, Wash (K.R.M.); Department of Radiology, Cornell and Columbia Universities, New York, NY (M.R.P.); Department of Radiology, University of Wisconsin, Madison, Wis (H.A.R.); and Department of Radiology, The Ohio State University, Columbus, Ohio (M.F.T.)
| | - Herbert Y Kressel
- From the Division of Neuroradiology, Department of Radiology, Mayo Clinic, Rochester, Minn (R.J.M.); Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA 02215 (D.L., H.Y.K.); Department of Radiology & Biomedical Imaging, Yale School of Medicine, New Haven, Conn (J.W.); Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, Pa (E.K.); Department of Radiology, University of Michigan Health System, Ann Arbor, Mich (M.S.D., J.H.E.); Cancer Imaging Program, National Institutes of Health, National Cancer Institute, Bethesda, Md (P.M.J.); Department of Radiology, UT Southwestern Medical Center, Dallas, Tex (R.E.L.); Department of Radiology, University of Washington, Seattle, Wash (K.R.M.); Department of Radiology, Cornell and Columbia Universities, New York, NY (M.R.P.); Department of Radiology, University of Wisconsin, Madison, Wis (H.A.R.); and Department of Radiology, The Ohio State University, Columbus, Ohio (M.F.T.)
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Robison RK, Pokorney A, Miller JH. Evaluation of the effect of switching from a linear to a macrocyclic contrast agent on the T1
-weighted brain signal intensity of a child during the course of 43 contrast-enhanced MRI examinations. J Magn Reson Imaging 2018; 49:608-609. [DOI: 10.1002/jmri.26208] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 05/16/2018] [Indexed: 11/06/2022] Open
Affiliation(s)
- Ryan K. Robison
- Department of Radiology; Phoenix Children's Hospital; Phoenix Arizona USA
| | - Amber Pokorney
- Department of Radiology; Phoenix Children's Hospital; Phoenix Arizona USA
| | - Jeffrey H. Miller
- Department of Radiology; Phoenix Children's Hospital; Phoenix Arizona USA
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Khannam M, Weyhermüller T, Goswami U, Mukherjee C. A highly stable l-alanine-based mono(aquated) Mn(ii) complex as a T 1-weighted MRI contrast agent. Dalton Trans 2018; 46:10426-10432. [PMID: 28745775 DOI: 10.1039/c7dt02282d] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The synthesized lithium (S)-6,6'-(1-carboxyethylazanediyl)bis(methylene)dipicolinate (Li3cbda) is a new chiral, alanine-based ligand bearing two picolinate functionalities. The trianionic form of the ligand [(cbda)3-] constitutes a seven-coordinate, water-soluble, pentagonal bipyramidal Mn(ii) complex (1). The structural analysis reveals the presence of a water coordinating site in the complex. The complex is thermodynamically very stable, and the stability is not affected by the presence of physiological anions (HCO3-, PO43-, and F-). The pH of the medium exerts a small effect on the stability of the complex. The r1 relaxivity of 3.02 mM-1 s-1 is exhibited by the complex at 1.41 T, pH ∼7.4, and 25 °C. Phantom images obtained via a clinical MRI BRIVO MR355 system established concentration-dependent signal enhancement by the complex. The cytotoxicity test confirmed complex 1 as a biocompatible potential T1-weighted MRI contrast agent.
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Affiliation(s)
- Mahmuda Khannam
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India.
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Mihajlovic J, Rinklebe J. Rare earth elements in German soils - A review. CHEMOSPHERE 2018; 205:514-523. [PMID: 29705642 DOI: 10.1016/j.chemosphere.2018.04.059] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Revised: 02/27/2018] [Accepted: 04/11/2018] [Indexed: 06/08/2023]
Abstract
Rare earth elements (REEs) are increasingly used in high-tech industry, agriculture, and healthcare technologies what leads to their release into soils and waters, and to the transfer into plants what may have negative impacts on human health and the environment. The toxicity and potential mobilization of REEs in soils can be assessed by their content and geochemical behavior along with soil properties. However, those interactions are so far not reviewed in German soils although such a review is important for a better understanding and prediction of the potential mobilization and toxicity. Therefore, this review summarizes the recent knowledge about REE contents and potential mobilization in different soil profiles in Germany. We found that the REE content tends to decrease in dependence on the parent material in the following order: Carbonatite > basalt > orthogneiss > clay slate > loess > sandstone > Pleistocene and Holocene sediments > organic material. Also, we used data of earlier studies, summarized and newly evaluated those data aiming to quantify the factors influencing the total REE content in German soil profiles. The contents of REEs in soil profiles of different parent material showed significant relations with content of clay, carbonate, organic matter, aluminium, iron, and manganese. Geochemical fractionation results suggest that the bioavailability of REEs is relatively low while the residual fraction is relatively high in German soils. In soils, where water fluctuations are important, the redox potential is a key factor controlling the mobilization of REEs also via related changes of pH.
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Affiliation(s)
- Julia Mihajlovic
- University of Wuppertal, School of Architecture and Civil Engineering, Soil- and Groundwater-Management, Pauluskirchstraße 7, D-42285 Wuppertal, Germany.
| | - Jörg Rinklebe
- University of Wuppertal, School of Architecture and Civil Engineering, Soil- and Groundwater-Management, Pauluskirchstraße 7, D-42285 Wuppertal, Germany; Sejong University, Department of Environment, Energy and Geoinformatics, 98 Gunja-Dong, Guangjin-Gu, Seoul, South Korea.
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Greiser J, Kühnel C, Görls H, Weigand W, Freesmeyer M. N,1,4-Tri(4-alkoxy-2-hydroxybenzyl)-DAZA: efficient one-pot synthesis and labelling with 68Ga for PET liver imaging in ovo. Dalton Trans 2018; 47:9000-9007. [PMID: 29923561 DOI: 10.1039/c8dt01038b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
We report the isolation of a new type of 1,4-diazepan-6-amine (DAZA)-based ligand. Condensation of aldehydes with DAZA gives a novel class of 1,5-diazabicyclo[3.2.1]octanes in nearly quantitative yields. Subsequent reductive cleavage of these bicyclic aminal species with sodium borohydride selectively leads to N,1,4-tri(4-alkoxy-2-hydroxybenzyl)-1,4-diazepan-6-amines (alkoxy = Me: TMeOHB-DAZA; alkoxy = Et: TEtOHB-DAZA) via a unique reductive alkylation reaction in which a substituent is added to the DAZA moiety without the presence of an alkylating agent. Mass spectrometry studies of the intermediates suggest that the mechanism involves insertion of in situ released carbonyl species into an aminal bond to form hemiaminal intermediates, and subsequent reduction. TMeOHB-DAZA and TEtOHB-DAZA are hexadentate ligands suitable for effectively coordinating Ga(iii) ions. Chelation of the radionuclide 68Ga was achieved within 5 min at 100 °C. In vitro stability studies in PBS and human serum confirmed the kinetic inertness of the tracers as no 68Ga demetallation was observed over a period of 4 h. Positron emission tomography (PET)/computed tomography (CT) imaging after in ovo administration to incubated ostrich eggs showed a high uptake in the liver, namely 27% (60 min post injection), and subsequent biliary excretion. These results suggest that [68Ga]Ga-TMeOHB-DAZA and [68Ga]Ga-TEtOHB-DAZA have excellent potential as hepatobiliary PET/CT imaging agents.
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Affiliation(s)
- Julia Greiser
- University Hospital Jena, Clinic of Nuclear Medicine, Am Klinikum 1, 07747 Jena, Germany.
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Clases D, Sperling M, Karst U. Analysis of metal-based contrast agents in medicine and the environment. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2017.12.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Adamiano A, Iafisco M, Sandri M, Basini M, Arosio P, Canu T, Sitia G, Esposito A, Iannotti V, Ausanio G, Fragogeorgi E, Rouchota M, Loudos G, Lascialfari A, Tampieri A. On the use of superparamagnetic hydroxyapatite nanoparticles as an agent for magnetic and nuclear in vivo imaging. Acta Biomater 2018; 73:458-469. [PMID: 29689381 DOI: 10.1016/j.actbio.2018.04.040] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Revised: 04/18/2018] [Accepted: 04/20/2018] [Indexed: 12/14/2022]
Abstract
The identification of alternative biocompatible magnetic NPs for advanced clinical application is becoming an important need due to raising concerns about iron accumulation in soft issues associated to the administration of superparamagnetic iron oxide nanoparticles (NPs). Here, we report on the performance of previously synthetized iron-doped hydroxyapatite (FeHA) NPs as contrast agent for magnetic resonance imaging (MRI). The MRI contrast abilities of FeHA and Endorem® (dextran coated iron oxide NPs) were assessed by 1H nuclear magnetic resonance relaxometry and their performance in healthy mice was monitored by a 7 Tesla scanner. FeHA applied a higher contrast enhancement, and had a longer endurance in the liver with respect to Endorem® at iron equality. Additionally, a proof of concept of FeHA use as scintigraphy imaging agent for positron emission tomography (PET) and single photon emission computed tomography (SPECT) was given labeling FeHA with 99mTc-MDP by a straightforward surface functionalization process. Scintigraphy/x-ray fused imaging and ex vivo studies confirmed its dominant accumulation in the liver, and secondarily in other organs of the mononuclear phagocyte system. FeHA efficiency as MRI-T2 and PET-SPECT imaging agent combined to its already reported intrinsic biocompatibility qualifies it as a promising material for innovative nanomedical applications. STATEMENT OF SIGNIFICANCE The ability of iron-doped hydroxyapatite nanoaprticles (FeHA) to work in vivo as imaging agents for magnetic resonance (MR) and nuclear imaging is demonstrated. FeHA applied an higher MR contrast in the liver, spleen and kidneys of mice with respect to Endorem®. The successful radiolabeling of FeHA allowed for scintigraphy/X-ray and ex vivo biodistribution studies, confirming MR results and envisioning FeHA application for dual-imaging.
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Lord ML, Chettle DR, Gräfe JL, Noseworthy MD, McNeill FE. Observed Deposition of Gadolinium in Bone Using a New Noninvasive in Vivo Biomedical Device: Results of a Small Pilot Feasibility Study. Radiology 2018; 287:96-103. [DOI: 10.1148/radiol.2017171161] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Michelle L. Lord
- From the Interdisciplinary Graduate Program in Radiation Sciences (M.L.L.), Department of Physics and Astronomy (D.R.C., F.E.M.), McMaster School of Biomedical Engineering (M.D.N.), and Department of Electrical and Computer Engineering (M.D.N.), McMaster University, 1280 Main St W, Hamilton, ON, Canada L8S 4L8; and Department of Physics, Ryerson University, Toronto, Ontario, Canada (J.L.G.)
| | - David R. Chettle
- From the Interdisciplinary Graduate Program in Radiation Sciences (M.L.L.), Department of Physics and Astronomy (D.R.C., F.E.M.), McMaster School of Biomedical Engineering (M.D.N.), and Department of Electrical and Computer Engineering (M.D.N.), McMaster University, 1280 Main St W, Hamilton, ON, Canada L8S 4L8; and Department of Physics, Ryerson University, Toronto, Ontario, Canada (J.L.G.)
| | - James L. Gräfe
- From the Interdisciplinary Graduate Program in Radiation Sciences (M.L.L.), Department of Physics and Astronomy (D.R.C., F.E.M.), McMaster School of Biomedical Engineering (M.D.N.), and Department of Electrical and Computer Engineering (M.D.N.), McMaster University, 1280 Main St W, Hamilton, ON, Canada L8S 4L8; and Department of Physics, Ryerson University, Toronto, Ontario, Canada (J.L.G.)
| | - Michael D. Noseworthy
- From the Interdisciplinary Graduate Program in Radiation Sciences (M.L.L.), Department of Physics and Astronomy (D.R.C., F.E.M.), McMaster School of Biomedical Engineering (M.D.N.), and Department of Electrical and Computer Engineering (M.D.N.), McMaster University, 1280 Main St W, Hamilton, ON, Canada L8S 4L8; and Department of Physics, Ryerson University, Toronto, Ontario, Canada (J.L.G.)
| | - Fiona E. McNeill
- From the Interdisciplinary Graduate Program in Radiation Sciences (M.L.L.), Department of Physics and Astronomy (D.R.C., F.E.M.), McMaster School of Biomedical Engineering (M.D.N.), and Department of Electrical and Computer Engineering (M.D.N.), McMaster University, 1280 Main St W, Hamilton, ON, Canada L8S 4L8; and Department of Physics, Ryerson University, Toronto, Ontario, Canada (J.L.G.)
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Phukan B, Mukherjee C, Goswami U, Sarmah A, Mukherjee S, Sahoo SK, Moi SC. A New Bis(aquated) High Relaxivity Mn(II) Complex as an Alternative to Gd(III)-Based MRI Contrast Agent. Inorg Chem 2018; 57:2631-2638. [PMID: 29424537 DOI: 10.1021/acs.inorgchem.7b03039] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Disclosed here are a piperazine, a pyridine, and two carboxylate groups containing pentadentate ligand H2pmpa and its corresponding water-soluble Mn(II) complex (1). DFT-based structural optimization implied that the complex had pentagonal bipyramidal geometry where the axial positions were occupied by two water molecules, and the equatorial plane was constituted by the ligand ON3O donor set. Thus, a bis(aquated) disc-like Mn(II) complex has been synthesized. The complex showed higher stability compared with Mn(II)-EDTA complex [log KMnL = 14.29(3)] and showed a very high r1 relaxivity value of 5.88 mM-1 s-1 at 1.41 T, 25 °C, and pH = 7.4. The relaxivity value remained almost unaffected by the pH of the medium in the range of 6-10. Although the presence of 200 equiv of fluoride and bicarbonate anions did not affect the relaxivity value appreciably, an increase in the value was noticed in the presence of phosphate anion due to slow tumbling of the complex. Cell viability measurements, as well as phantom MR images using clinical MRI imager, consolidated the possible candidature of complex 1 as a positive contrast agent.
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Affiliation(s)
- Bedika Phukan
- Department of Chemistry , Indian Institute of Technology Guwahati , Guwahati 781039 , Assam , India
| | - Chandan Mukherjee
- Department of Chemistry , Indian Institute of Technology Guwahati , Guwahati 781039 , Assam , India
| | - Upashi Goswami
- Centre for Nanotechnology , Indian Institute of Technology Guwahati , Guwahati 781039 , Assam , India
| | - Amrit Sarmah
- Department of Molecular Modelling , Institute of Organic Chemistry and Biochemistry ASCR , Flemingovo nám. 2 , CZ-166 10 Prague 6 , Czech Republic
| | - Subhajit Mukherjee
- Department of Chemistry , National Institute of Technology , Durgapur 713209 , West Bengal , India
| | - Suban K Sahoo
- Department of Applied Chemistry , S.V. National Institute of Technology , Surat 395007 , Gujarat , India
| | - Sankar Ch Moi
- Department of Chemistry , National Institute of Technology , Durgapur 713209 , West Bengal , India
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Hu Y, Mignani S, Majoral JP, Shen M, Shi X. Construction of iron oxide nanoparticle-based hybrid platforms for tumor imaging and therapy. Chem Soc Rev 2018; 47:1874-1900. [DOI: 10.1039/c7cs00657h] [Citation(s) in RCA: 229] [Impact Index Per Article: 38.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This review highlights the most recent progress in the construction of iron oxide nanoparticle-based hybrid platforms for tumor imaging and therapy.
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Affiliation(s)
- Yong Hu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
| | - Serge Mignani
- PRES Sorbonne Paris Cité
- CNRS UMR 860
- Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologique
- Université Paris Descartes
- Paris
| | | | - Mingwu Shen
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
| | - Xiangyang Shi
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
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Rastogi N, Tyagi N, Singh O, Hemanth Kumar B, Singh UP, Ghosh K, Roy R. Mn(II) based T1 and T2 potential MRI contrast agent appended with tryptamine: Recognition moiety for Aβ-plaques. J Inorg Biochem 2017; 177:76-81. [DOI: 10.1016/j.jinorgbio.2017.08.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Revised: 08/18/2017] [Accepted: 08/21/2017] [Indexed: 11/16/2022]
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“Facial vascular anomalies; MRI and TRICKS-MR angiography diagnostic approach”. THE EGYPTIAN JOURNAL OF RADIOLOGY AND NUCLEAR MEDICINE 2017. [DOI: 10.1016/j.ejrnm.2017.08.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Qin L, Sun ZY, Cheng K, Liu SW, Pang JX, Xia LM, Chen WH, Cheng Z, Chen JX. Zwitterionic Manganese and Gadolinium Metal-Organic Frameworks as Efficient Contrast Agents for in Vivo Magnetic Resonance Imaging. ACS APPLIED MATERIALS & INTERFACES 2017; 9:41378-41386. [PMID: 29144731 DOI: 10.1021/acsami.7b09608] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Two water-stable three-dimensional Mn- and Gd-based metal-organic frameworks (MOFs), {[Mn2(Cmdcp)2(H2O)2]·H2O}n (1) and {[Gd(Cmdcp)(H2O)3](NO3)·3H2O}n (2, H3CmdcpBr = N-(4-carboxy benzyl)-(3,5-dicarboxyl)pyridinium bromide), have been prepared and analyzed. In vitro magnetic resonance imaging indicated that MOFs 1 and 2 possess relaxivity r1 values of 17.50 and 13.46 mM-1·S-1, respectively, which are superior to that of the control Gd-DTPA (r1 = 4.87 mM-1·S-1, DTPA = diethylene triamine pentaacetate). MOFs 1 and 2 also possessed good biocompatibility and low cytotoxicity against a model cell line. In vivo magnetic resonance images of treated Kunming mice indicated that kidneys showed remarkably positive signal enhancement after 15 min with intravenous administration of MOF 1 and the hyperintensity of both kidneys persisted for about 240 min with no obvious tissue damage. MOF 1 is therefore promising in vivo probes for imaging intravascular diseases and renal dysfunction.
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Affiliation(s)
- Liang Qin
- Guangdong Provincial Key Laboratory of New Drug Screening and Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University , Guangzhou 510515, China
- School of Chemistry and Chemical Engineering, Zhaoqing University , Zhaoqing 526061, China
| | - Zi-Yan Sun
- Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology , 1095 Jiefang Avenue, Wuhan 430030, China
- Department of Radiology, School of Medicine, Stanford University , 1201 Welch Road, Lucas Center, Stanford, California 94305-5484, United States
| | - Kai Cheng
- Department of Radiology, School of Medicine, Stanford University , 1201 Welch Road, Lucas Center, Stanford, California 94305-5484, United States
| | - Shu-Wen Liu
- Guangdong Provincial Key Laboratory of New Drug Screening and Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University , Guangzhou 510515, China
| | - Jian-Xin Pang
- Guangdong Provincial Key Laboratory of New Drug Screening and Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University , Guangzhou 510515, China
| | - Li-Ming Xia
- Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology , 1095 Jiefang Avenue, Wuhan 430030, China
| | - Wen-Hua Chen
- Guangdong Provincial Key Laboratory of New Drug Screening and Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University , Guangzhou 510515, China
| | - Zhen Cheng
- Department of Radiology, School of Medicine, Stanford University , 1201 Welch Road, Lucas Center, Stanford, California 94305-5484, United States
| | - Jin-Xiang Chen
- Guangdong Provincial Key Laboratory of New Drug Screening and Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, School of Pharmaceutical Sciences, Southern Medical University , Guangzhou 510515, China
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de Angelis P, Miller RK, Darrah TH, Katzman PJ, Pressman EK, Kent TR, O'Brien KO. Elemental content of the placenta: A comparison between two high-risk obstetrical populations, adult women carrying multiples and adolescents carrying singletons. ENVIRONMENTAL RESEARCH 2017; 158:553-565. [PMID: 28715784 DOI: 10.1016/j.envres.2017.07.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 05/30/2017] [Accepted: 07/04/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND The placenta is responsible for the exchange of nutrients and for preventing harmful compounds from entering the fetal circulation. With increasing industrialization, exposures to commercial and toxic metals become a concern for both pregnant women and those planning a pregnancy. The understanding of transport mechanisms and pharmacokinetics for most inorganic elements is incomplete and limited to normal term deliveries. OBJECTIVES To obtain novel data on 46 inorganic elements in placentae from two high-risk obstetric populations, women carrying multiples and adolescents carrying singletons, evaluating differences, if present, and identifying predictors of placental content. METHODS Placental tissue was collected from adolescents carrying singletons and adults carrying multiples. Elemental content was analyzed using inductively coupled plasma-mass spectrometry (ICP-MS). Multivariate regression and factor analyses were used. RESULTS With the exception of Au and Pt, almost all placentae contained quantifiable concentrations of each element analyzed. All placentae contained the essential elements Ca, Fe, Mg, Se and Zn, which clustered together onto the same factor. Most elements were higher in placentae from women carrying multiples. Differences in placental content disappeared after adjusting for maternal age. Rare earth elements (REEs) clustered together and remained higher in the multiples even after adjusting for maternal age. CONCLUSION Human placentae contain a wide range of elements, including REEs. Ranges differed considerably between cohorts. Elements with similar chemical properties, like REEs or nutritionally essential elements, clustered together. Maternal age, and therefore longer environmental exposure, was significantly associated with elevated element concentrations in the placenta. Placental concentrations of several metals that are known to be nutritionally essential (e.g., Fe, Ca, Mg, and Zn) did not differ significantly between cohorts, suggesting tight regulation, whereas concentrations of environmental contaminants differed significantly between groups, even after adjusting for maternal age.
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Affiliation(s)
- Paolo de Angelis
- Dept. of Nutritional Sciences, Cornell University, Ithaca, NY, USA
| | - Richard K Miller
- Dept. of Obstetrics & Gynecology, University of Rochester School of Medicine & Dentistry, Rochester, NY, USA; Dept. of Pathology and Clinical Laboratory Medicine, University of Rochester School of Medicine & Dentistry, Rochester, NY, USA; Dept. of Environmental Medicine, University of Rochester School of Medicine & Dentistry, Rochester, NY, USA
| | - Thomas H Darrah
- School of Earth Science, The Ohio State University, Columbus, OH, USA
| | - Philip J Katzman
- Dept. of Pathology and Clinical Laboratory Medicine, University of Rochester School of Medicine & Dentistry, Rochester, NY, USA
| | - Eva K Pressman
- Dept. of Obstetrics & Gynecology, University of Rochester School of Medicine & Dentistry, Rochester, NY, USA
| | - Tera R Kent
- Dept. of Nutritional Sciences, Cornell University, Ithaca, NY, USA
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Niedbalski P, Parish CR, Wang Q, Hayati Z, Song L, Cleveland ZI, Lumata L. Enhanced Efficiency of 13C Dynamic Nuclear Polarization by Superparamagnetic Iron Oxide Nanoparticle Doping. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2017; 121:19505-19511. [PMID: 31768206 PMCID: PMC6876865 DOI: 10.1021/acs.jpcc.7b06408] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Attainment of high NMR signal enhancements is crucial to the success of in vitro or in vivo hyperpolarized NMR or imaging (MRI) experiments. In this work, we report on the use of a superparamagnetic iron oxide nanoparticle (SPION) MRI contrast agent Feraheme (ferumoxytol) as a beneficial additive in 13C samples for dissolution dynamic nuclear polarization (DNP). Our DNP data at 3.35 T and 1.2 K reveal that addition of 11 mM elemental iron concentration of Feraheme in trityl OX063-doped 3 M [1-13C] acetate samples resulted in a substantial improvement of 13C DNP signal by a factor of almost 3-fold. Concomitant with the large DNP signal increase is the narrowing of the 13C microwave DNP spectra for samples doped with SPION. W-band electron paramagnetic resonance (EPR) spectroscopy data suggest that these two prominent effects of SPION doping on 13C DNP can be ascribed to the shortening of trityl OX063 electron T 1 as explained within the thermal mixing DNP model. Liquid-state 13C NMR signal enhancements as high as 20,000-fold for SPION-doped samples were recorded after dissolution at 9.4 T and 297 K, which is about 3 times the liquid-state NMR signal enhancement of the control sample. While the presence of SPION in hyperpolarized solution drastically reduces 13C T 1, this can be mitigated by polarizing smaller aliquots of DNP samples. Moreover, we have shown that Feraheme nanoparticles (~30 nm in size) can be easily and effectively removed from the hyperpolarized liquid by simple mechanical filtration, thus one can potentially incorporate an in-line filtration for these SPIONS along the dissolution pathway of the hyperpolarizer-a significant advantage over other DNP enhancers such as the lanthanide complexes. The overall results suggest that the commercially-available and FDA-approved Feraheme is a highly efficient DNP enhancer that could be readily translated for use in clinical applications of dissolution DNP.
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Affiliation(s)
- Peter Niedbalski
- Department of Physics, University of Texas at Dallas, 800 West Campbell Road, Richardson, TX 75080 USA
| | - Christopher R. Parish
- Department of Physics, University of Texas at Dallas, 800 West Campbell Road, Richardson, TX 75080 USA
| | - Qing Wang
- Department of Physics, University of Texas at Dallas, 800 West Campbell Road, Richardson, TX 75080 USA
| | - Zahra Hayati
- National High Magnetic Field Laboratory, Florida State University, 1800 E Paul Dirac Drive, Tallahassee, FL 32310
| | - Likai Song
- National High Magnetic Field Laboratory, Florida State University, 1800 E Paul Dirac Drive, Tallahassee, FL 32310
| | - Zackary I. Cleveland
- Center for Pulmonary Imaging Research, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229
- Department of Biomedical Engineering, University of Cincinnati, Cincinnati, OH 45221
| | - Lloyd Lumata
- Department of Physics, University of Texas at Dallas, 800 West Campbell Road, Richardson, TX 75080 USA
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Zou J, Hirvonen T. "Wait and scan" management of patients with vestibular schwannoma and the relevance of non-contrast MRI in the follow-up. J Otol 2017; 12:174-184. [PMID: 29937853 PMCID: PMC6002632 DOI: 10.1016/j.joto.2017.08.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 07/29/2017] [Accepted: 08/04/2017] [Indexed: 02/04/2023] Open
Abstract
Vestibular schwannoma (VS) is a slow-growing benign neoplasm. There has been an evolution in the management of VS from active treatments (microsurgery and stereotactic radiotherapy) to conservative management (wait and scan). Regular MRI scanning is necessary to monitor tumor progression. Conservative management causes significantly less complications and offers a higher quality of life compared with active treatments. The mean growth rate of VS varies from 0.4 to 2.9 mm/year, and spontaneous shrinkage is observed in 3.8 percent of tumors during observation. If significant growth occurs, active treatment is considered. Significant growth is defined as an increase of at least 3 mm in the largest extrameatal diameter in any plane between the first and last available scans. The vestibulocochlear nerve is surrounded by cerebrospinal fluid, which provides natural contrast for MRI; thus, gadolinium may not be needed to detect VS. Specific sequences have high sensitivity, specificity, and accuracy for detection of progression. Hypointense signal in the ipsilateral inner ear fluid might be a useful sign to distinguish VS from meningioma. In this paper, we summarize the current status of research on conservative management and non-contrast MRI for the detection of VS.
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Affiliation(s)
- Jing Zou
- Department of Otolaryngology-Head and Neck Surgery, Center for Otolaryngology-Head & Neck Surgery of Chinese PLA, Changhai Hospital, Second Military Medical University, Shanghai, China
- Corresponding author. Department of Otolaryngology-Head and Neck Surgery, Changhai Hospital, Second Military Medical University, Changhai Road #168, 200433 Shanghai, China.
| | - Timo Hirvonen
- Department of Otorhinolaryngology-Head and Neck Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
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Fuah KW, Lim CTS. Erythema nodosum masking nephrogenic systemic fibrosis as initial skin manifestation. BMC Nephrol 2017; 18:249. [PMID: 28738858 PMCID: PMC5525362 DOI: 10.1186/s12882-017-0666-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 07/14/2017] [Indexed: 11/22/2022] Open
Abstract
Background Nephrogenic systemic fibrosis (NSF) is a complication of the gadolinium-based contrast agent used in imaging studies. It is typically characterised by hard, erythematous and indurated skin plaques with surrounding subcutaneous oedema. Distinct papules and subcutaneous nodules can also be seen. Fibrocytes in NSF are immunohistochemically positive for CD34. Case presentation We present a case of NSF occurred after gadolinium exposure in which the initial presentation mimics an erythema nodosum (EN)-like picture. An initial skin biopsy showed EN. Subsequently the patient developed progressive skin and joints contracture. A repeated skin biopsy done three months later confirmed the diagnosis of NSF. As far as we are aware, this is the second reported case of NSF that mimicked the presentation of EN in the early phase of the disease. Conclusions The appearance of EN-like disease can be one of the early manifestations of NSF. We hope that early recognition of this unusual presentation can alert the physician or nephrologist to the potential diagnosis of NSF.
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Affiliation(s)
- Kar Wah Fuah
- Department of Medicine, Serdang Hospital, Serdang, Malaysia
| | - Christopher Thiam Seong Lim
- Unit of Nephrology, Department of Medicine, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia.
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Weems AC, Szafron JM, Easley AD, Herting S, Smolen J, Maitland DJ. Shape memory polymers with enhanced visibility for magnetic resonance- and X-ray imaging modalities. Acta Biomater 2017; 54:45-57. [PMID: 28259837 PMCID: PMC5811198 DOI: 10.1016/j.actbio.2017.02.045] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 02/27/2017] [Accepted: 02/28/2017] [Indexed: 12/30/2022]
Abstract
Currently, monitoring of minimally invasive medical devices is performed using fluoroscopy. The risks associated with fluoroscopy, including increased risk of cancer, make this method especially unsuitable for pediatric device delivery and follow-up procedures. A more suitable method is magnetic resonance (MR) imaging, which makes use of harmless magnetic fields rather than ionizing radiation when imaging the patient; this method is safer for both the patient and the performing technicians. Unfortunately, there is a lack of research available on bulk polymeric materials to enhance MR-visibility for use in medical devices. Here we show the incorporation of both physical and chemical modifying agents for the enhancement of both MR and X-ray visibility. Through the incorporation of these additives, we are able to control shape recovery of the polymer without sacrificing the thermal transition temperatures or the mechanical properties. For long-term implantation, these MR-visible materials do not have altered degradation profiles, and the release of additives is well below significant thresholds for daily dosages of MR-visible compounds. We anticipate our materials to be a starting point for safer, MR-visible medical devices incorporating polymeric components. STATEMENT OF SIGNIFICANCE Shape memory polymers (SMPs) are polymeric materials with unique shape recovery abilities that are being considered for use in biomedical and medical device applications. This paper presents a methodology for the development of MR and X-ray visible SMPs using either a chemically loaded or physical loaded method during polymer synthesis. Such knowledge is imperative for the development and clinical application of SMPs for biomedical devices, specifically for minimally-invasive vascular occlusion treatments, and while there are studies pertaining to the visibility of polymeric particles, little work has been performed on the utility of biomaterials intended for medical devices and the impact of how adding multiple functionalities, such as imaging, may impact material safety and degradation.
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Affiliation(s)
- A C Weems
- Department of Biomedical Engineering, 5045 Emerging Technologies Building, 3120 TAMU Texas A&M University, College Station, TX 77843-3120, USA
| | - J M Szafron
- Department of Biomedical Engineering, 5045 Emerging Technologies Building, 3120 TAMU Texas A&M University, College Station, TX 77843-3120, USA
| | - A D Easley
- Department of Biomedical Engineering, 5045 Emerging Technologies Building, 3120 TAMU Texas A&M University, College Station, TX 77843-3120, USA
| | - S Herting
- Department of Biomedical Engineering, 5045 Emerging Technologies Building, 3120 TAMU Texas A&M University, College Station, TX 77843-3120, USA
| | - J Smolen
- Department of Biomedical Engineering, 5045 Emerging Technologies Building, 3120 TAMU Texas A&M University, College Station, TX 77843-3120, USA
| | - D J Maitland
- Department of Biomedical Engineering, 5045 Emerging Technologies Building, 3120 TAMU Texas A&M University, College Station, TX 77843-3120, USA.
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Rasschaert M, Idée JM, Robert P, Fretellier N, Vives V, Violas X, Ballet S, Corot C. Moderate Renal Failure Accentuates T1 Signal Enhancement in the Deep Cerebellar Nuclei of Gadodiamide-Treated Rats. Invest Radiol 2017; 52:255-264. [PMID: 28067754 PMCID: PMC5383202 DOI: 10.1097/rli.0000000000000339] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 10/06/2016] [Indexed: 12/02/2022]
Abstract
OBJECTIVES The purpose of this preclinical study was to investigate whether moderate chronic kidney disease is a factor in potentiating gadolinium (Gd) uptake in the brain. MATERIALS AND METHODS A comparative study was performed on renally impaired (subtotal nephrectomy) rats versus rats with normal renal function. The animals received 4 daily injections of 0.6 mmol Gd/kg a week for 5 weeks (cumulative dose of 12 mmol Gd/kg) of gadodiamide or saline solution. The MR signal enhancement in the deep cerebellar nuclei was monitored by weekly magnetic resonance imaging examinations. One week after the final injection, the total Gd concentration was determined by inductively coupled plasma mass spectrometry in different regions of the brain including the cerebellum, plasma, cerebrospinal fluid, parietal bone, and femur. RESULTS After the administration of gadodiamide, the subtotal nephrectomy group presented a significantly higher T1 signal enhancement in the deep cerebellar nuclei and a major increase in the total Gd concentration in all the studied structures, compared with the normal renal function group receiving the same linear Gd-based contrast agent. Those potentiated animals also showed a pronounced hypersignal in the choroid plexus, still persistent 6 days after the last injection, whereas low concentration of Gd was found in the cerebrospinal fluid (<0.05 μmol/L) at this time point. Plasma Gd concentration was then around 1 μmol/L. Interestingly, plasma Gd was predominantly in a dissociated and soluble form (around 90% of total Gd). Total Gd concentrations in the brain, cerebellum, plasma, and bones correlated with creatinine clearance in both the gadodiamide-treated groups. CONCLUSIONS Renal insufficiency in rats potentiates Gd uptake in the cerebellum, brain, and bones.
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Affiliation(s)
- Marlène Rasschaert
- From the *Guerbet Research and Innovation Department, Aulnay-sous-Bois; †Institut Curie, Centre de Recherche, PSL Research University; and ‡Université Paris-Sud, Université Paris-Saclay, CNRS, UMR-9187, INSERM, U1196, F-91405, Orsay, France
| | - Jean-Marc Idée
- From the *Guerbet Research and Innovation Department, Aulnay-sous-Bois; †Institut Curie, Centre de Recherche, PSL Research University; and ‡Université Paris-Sud, Université Paris-Saclay, CNRS, UMR-9187, INSERM, U1196, F-91405, Orsay, France
| | - Philippe Robert
- From the *Guerbet Research and Innovation Department, Aulnay-sous-Bois; †Institut Curie, Centre de Recherche, PSL Research University; and ‡Université Paris-Sud, Université Paris-Saclay, CNRS, UMR-9187, INSERM, U1196, F-91405, Orsay, France
| | - Nathalie Fretellier
- From the *Guerbet Research and Innovation Department, Aulnay-sous-Bois; †Institut Curie, Centre de Recherche, PSL Research University; and ‡Université Paris-Sud, Université Paris-Saclay, CNRS, UMR-9187, INSERM, U1196, F-91405, Orsay, France
| | - Véronique Vives
- From the *Guerbet Research and Innovation Department, Aulnay-sous-Bois; †Institut Curie, Centre de Recherche, PSL Research University; and ‡Université Paris-Sud, Université Paris-Saclay, CNRS, UMR-9187, INSERM, U1196, F-91405, Orsay, France
| | - Xavier Violas
- From the *Guerbet Research and Innovation Department, Aulnay-sous-Bois; †Institut Curie, Centre de Recherche, PSL Research University; and ‡Université Paris-Sud, Université Paris-Saclay, CNRS, UMR-9187, INSERM, U1196, F-91405, Orsay, France
| | - Sébastien Ballet
- From the *Guerbet Research and Innovation Department, Aulnay-sous-Bois; †Institut Curie, Centre de Recherche, PSL Research University; and ‡Université Paris-Sud, Université Paris-Saclay, CNRS, UMR-9187, INSERM, U1196, F-91405, Orsay, France
| | - Claire Corot
- From the *Guerbet Research and Innovation Department, Aulnay-sous-Bois; †Institut Curie, Centre de Recherche, PSL Research University; and ‡Université Paris-Sud, Université Paris-Saclay, CNRS, UMR-9187, INSERM, U1196, F-91405, Orsay, France
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