1
|
Mitin D, Bullinger F, Dobrynin S, Engelmann J, Scheffler K, Kolokolov M, Krumkacheva O, Buckenmaier K, Kirilyuk I, Chubarov A. Contrast Agents Based on Human Serum Albumin and Nitroxides for 1H-MRI and Overhauser-Enhanced MRI. Int J Mol Sci 2024; 25:4041. [PMID: 38612851 PMCID: PMC11012161 DOI: 10.3390/ijms25074041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 03/18/2024] [Accepted: 03/20/2024] [Indexed: 04/14/2024] Open
Abstract
In cancer diagnostics, magnetic resonance imaging (MRI) uses contrast agents to enhance the distinction between the target tissue and background. Several promising approaches have been developed to increase MRI sensitivity, one of which is Overhauser dynamic nuclear polarization (ODNP)-enhanced MRI (OMRI). In this study, a macromolecular construct based on human serum albumin and nitroxyl radicals (HSA-NIT) was developed using a new synthesis method that significantly increased the modification to 21 nitroxide residues per protein. This was confirmed by electron paramagnetic resonance (EPR) spectroscopy and matrix-assisted laser desorption/ionization time-of-flight (MALDI ToF) mass spectrometry. Gel electrophoresis and circular dichroism showed no significant changes in the structure of HSA-NITs, and no oligomers were formed during modification. The cytotoxicity of HSA-NITs was comparable to that of native albumin. HSA-NITs were evaluated as potential "metal-free" organic radical relaxation-based contrast agents for 1H-MRI and as hyperpolarizing contrast agents for OMRI. Relaxivities (longitudinal and transversal relaxation rates r1 and r2) for HSA-NITs were measured at different magnetic field strengths (1.88, 3, 7, and 14 T). Phantoms were used to demonstrate the potential use of HSA-NIT as a T1- and T2-weighted relaxation-based contrast agent at 3 T and 14 T. The efficacy of 1H Overhauser dynamic nuclear polarization (ODNP) in liquids at an ultralow magnetic field (ULF, B0 = 92 ± 0.8 μT) was investigated for HSA-NIT conjugates. The HSA-NITs themselves did not show ODNP enhancement; however, under the proteolysis conditions simulating cancer tissue, HSA-NIT conjugates were cleaved into lower-molecular-weight (MW) protein fragments that activate ODNP capabilities, resulting in a maximum achievable enhancement |Emax| of 40-50 and a radiofrequency power required to achieve half of Emax, P1/2, of 21-27 W. The HSA-NIT with a higher degree of modification released increased the number of spin probes upon biodegradation, which significantly enhanced the Overhauser effect. Thus, HSA-NITs may represent a new class of MRI relaxation-based contrast agents as well as novel cleavable conjugates for use as hyperpolarizing contrast agents (HCAs) in OMRI.
Collapse
Affiliation(s)
- Dmitry Mitin
- Institute of Chemical Biology and Fundamental Medicine SB RAS, 630090 Novosibirsk, Russia;
| | - Friedemann Bullinger
- High-Field Magnetic Resonance Center, Max Planck Institute for Biological Cybernetics, 72076 Tuebingen, Germany; (F.B.); (J.E.); (K.S.); (K.B.)
| | - Sergey Dobrynin
- N.N. Vorozhtsov Institute of Organic Chemistry SB RAS, 630090 Novosibirsk, Russia;
| | - Jörn Engelmann
- High-Field Magnetic Resonance Center, Max Planck Institute for Biological Cybernetics, 72076 Tuebingen, Germany; (F.B.); (J.E.); (K.S.); (K.B.)
| | - Klaus Scheffler
- High-Field Magnetic Resonance Center, Max Planck Institute for Biological Cybernetics, 72076 Tuebingen, Germany; (F.B.); (J.E.); (K.S.); (K.B.)
- Department of Biomedical Magnetic Resonance, Eberhard-Karls University, 72076 Tuebingen, Germany
| | - Mikhail Kolokolov
- International Tomography Center SB RAS, 630090 Novosibirsk, Russia; (M.K.); (O.K.)
| | - Olesya Krumkacheva
- International Tomography Center SB RAS, 630090 Novosibirsk, Russia; (M.K.); (O.K.)
| | - Kai Buckenmaier
- High-Field Magnetic Resonance Center, Max Planck Institute for Biological Cybernetics, 72076 Tuebingen, Germany; (F.B.); (J.E.); (K.S.); (K.B.)
| | - Igor Kirilyuk
- N.N. Vorozhtsov Institute of Organic Chemistry SB RAS, 630090 Novosibirsk, Russia;
| | - Alexey Chubarov
- Institute of Chemical Biology and Fundamental Medicine SB RAS, 630090 Novosibirsk, Russia;
| |
Collapse
|
2
|
Shen Q, Yu C. Advances in superparamagnetic iron oxide nanoparticles modified with branched polyethyleneimine for multimodal imaging. Front Bioeng Biotechnol 2024; 11:1323316. [PMID: 38333548 PMCID: PMC10851169 DOI: 10.3389/fbioe.2023.1323316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 12/18/2023] [Indexed: 02/10/2024] Open
Abstract
Multimodal imaging are approaches which combines multiple imaging techniques to obtain multi-aspect information of a target through different imaging modalities, thereby greatly improve the accuracy and comprehensiveness of imaging. Superparamagnetic iron oxide nanoparticles (SPIONs) modified with branched polyethyleneimine have revealed good biocompatibility and stability, high drug loading capacity and nucleic acid transfection efficiency. SPIONs have been developed as functionalized platforms which can be further modified to enhance their functionalities. Those further modifications facilitate the application of SPIONs in multimodal imaging. In this review, we discuss the methods, advantages, applications, and prospects of BPEI-modified SPIONs in multimodal imaging.
Collapse
Affiliation(s)
- Qiaoling Shen
- Department of Nuclear Medicine, Affiliated Hospital of Jiangnan University, Wuxi, China
- Wuxi School of Medicine, Jiangnan University, Wuxi, China
| | - Chunjing Yu
- Department of Nuclear Medicine, Affiliated Hospital of Jiangnan University, Wuxi, China
| |
Collapse
|
3
|
Breto AL, Cullison K, Zacharaki EI, Wallaengen V, Maziero D, Jones K, Valderrama A, de la Fuente MI, Meshman J, Azzam GA, Ford JC, Stoyanova R, Mellon EA. A Deep Learning Approach for Automatic Segmentation during Daily MRI-Linac Radiotherapy of Glioblastoma. Cancers (Basel) 2023; 15:5241. [PMID: 37958415 PMCID: PMC10647471 DOI: 10.3390/cancers15215241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 10/25/2023] [Accepted: 10/30/2023] [Indexed: 11/15/2023] Open
Abstract
Glioblastoma changes during chemoradiotherapy are inferred from high-field MRI before and after treatment but are rarely investigated during radiotherapy. The purpose of this study was to develop a deep learning network to automatically segment glioblastoma tumors on daily treatment set-up scans from the first glioblastoma patients treated on MRI-linac. Glioblastoma patients were prospectively imaged daily during chemoradiotherapy on 0.35T MRI-linac. Tumor and edema (tumor lesion) and resection cavity kinetics throughout the treatment were manually segmented on these daily MRI. Utilizing a convolutional neural network, an automatic segmentation deep learning network was built. A nine-fold cross-validation schema was used to train the network using 80:10:10 for training, validation, and testing. Thirty-six glioblastoma patients were imaged pre-treatment and 30 times during radiotherapy (n = 31 volumes, total of 930 MRIs). The average tumor lesion and resection cavity volumes were 94.56 ± 64.68 cc and 72.44 ± 35.08 cc, respectively. The average Dice similarity coefficient between manual and auto-segmentation for tumor lesion and resection cavity across all patients was 0.67 and 0.84, respectively. This is the first brain lesion segmentation network developed for MRI-linac. The network performed comparably to the only other published network for auto-segmentation of post-operative glioblastoma lesions. Segmented volumes can be utilized for adaptive radiotherapy and propagated across multiple MRI contrasts to create a prognostic model for glioblastoma based on multiparametric MRI.
Collapse
Affiliation(s)
- Adrian L. Breto
- Department of Radiation Oncology, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL 33136, USA; (A.L.B.); (K.C.); (R.S.)
| | - Kaylie Cullison
- Department of Radiation Oncology, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL 33136, USA; (A.L.B.); (K.C.); (R.S.)
| | - Evangelia I. Zacharaki
- Department of Radiation Oncology, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL 33136, USA; (A.L.B.); (K.C.); (R.S.)
| | - Veronica Wallaengen
- Department of Radiation Oncology, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL 33136, USA; (A.L.B.); (K.C.); (R.S.)
| | - Danilo Maziero
- Department of Radiation Oncology, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL 33136, USA; (A.L.B.); (K.C.); (R.S.)
- Department of Radiation Medicine & Applied Sciences, UC San Diego Health, La Jolla, CA 92093, USA
| | - Kolton Jones
- Department of Radiation Oncology, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL 33136, USA; (A.L.B.); (K.C.); (R.S.)
- West Physics, Atlanta, GA 30339, USA
| | - Alessandro Valderrama
- Department of Radiation Oncology, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL 33136, USA; (A.L.B.); (K.C.); (R.S.)
| | - Macarena I. de la Fuente
- Department of Neurology, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL 33136, USA
| | - Jessica Meshman
- Department of Radiation Oncology, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL 33136, USA; (A.L.B.); (K.C.); (R.S.)
| | - Gregory A. Azzam
- Department of Radiation Oncology, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL 33136, USA; (A.L.B.); (K.C.); (R.S.)
| | - John C. Ford
- Department of Radiation Oncology, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL 33136, USA; (A.L.B.); (K.C.); (R.S.)
| | - Radka Stoyanova
- Department of Radiation Oncology, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL 33136, USA; (A.L.B.); (K.C.); (R.S.)
| | - Eric A. Mellon
- Department of Radiation Oncology, Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL 33136, USA; (A.L.B.); (K.C.); (R.S.)
| |
Collapse
|
4
|
Le TN, Oakden W, Mukherjee S, Ferdous Z, Kuroiwa M, Liu VM, Zhang Z, Situ Y, Paul B, Stanisz G. Magnetic Targeting of Gadolinium Contrast to Enhance MRI of the Inner Ear in Endolymphatic Hydrops. Laryngoscope 2023; 133:914-923. [PMID: 35766261 DOI: 10.1002/lary.30267] [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: 03/12/2022] [Revised: 05/06/2022] [Accepted: 06/06/2022] [Indexed: 11/12/2022]
Abstract
OBJECTIVES 1. Determine the feasibility and efficiency of local magnetic targeting delivery of gadolinium (Gad) contrast to the inner ear in rodents. 2. Assess any potential ototoxicity of magnetic targeting delivery of Gad in the inner ear. 3. Study the utility of magnetic targeting delivery of Gad to visualize and quantify endolymphatic hydrops (EH) in a transgenic mouse model. STUDY DESIGN Controlled in vivo animal model study. METHODS Paramagnetic Gad was locally delivered to the inner ear using the magnetic targeting technique in both rat and mouse models. Efficiency of contrast delivery was assessed using magnetic resonance imaging (MRI). Ototoxicity of Gad was examined with histology of the cochlea and functional audiological tests. The Phex mouse model was used to study EH, hearing loss, and balance dysfunction. Magnetic targeting delivery of Gad contrast was used in the Phex mouse model to visualize the effects of EH using MRI. RESULTS Magnetic targeting improved the delivery of Gad to the inner ear and the technique was reproducible in both rat and mouse models. The delivery method did not result in microstructural damage or any significant hearing loss in a normal animal. Magnetic targeting of Gad in the Phex mouse model allowed detailed visualization and quantification of EH. CONCLUSION This study provided the first evidence of the effectiveness and efficiency of the local magnetic targeting delivery of gadolinium contrast to the inner ear and its application to the visualization and quantification of EH. Laryngoscope, 133:914-923, 2023.
Collapse
Affiliation(s)
- Trung N Le
- Department of Otolaryngology - Head and Neck Surgery, University of Toronto, Toronto, Ontario, Canada.,Biological Sciences Platform, Hurvitz Brain Sciences Program, Sunnybrook Research Institute, Toronto, Ontario, Canada
| | - Wendy Oakden
- Physical Sciences Platform, Hurvitz Brain Sciences Program, Sunnybrook Research Institute, Toronto, Ontario, Canada
| | - Subhendu Mukherjee
- Biological Sciences Platform, Hurvitz Brain Sciences Program, Sunnybrook Research Institute, Toronto, Ontario, Canada
| | - Zannatul Ferdous
- Biological Sciences Platform, Hurvitz Brain Sciences Program, Sunnybrook Research Institute, Toronto, Ontario, Canada
| | - Maya Kuroiwa
- Department of Otolaryngology - Head and Neck Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Violet M Liu
- Biological Sciences Platform, Hurvitz Brain Sciences Program, Sunnybrook Research Institute, Toronto, Ontario, Canada
| | - Zhifen Zhang
- Biological Sciences Platform, Hurvitz Brain Sciences Program, Sunnybrook Research Institute, Toronto, Ontario, Canada
| | - Yumai Situ
- Biological Sciences Platform, Hurvitz Brain Sciences Program, Sunnybrook Research Institute, Toronto, Ontario, Canada
| | - Brandon Paul
- Department of Psychology, Ryerson University, Toronto, Ontario, Canada
| | - Greg Stanisz
- Physical Sciences Platform, Hurvitz Brain Sciences Program, Sunnybrook Research Institute, Toronto, Ontario, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, Canada.,Department of Neurosurgery & Pediatric Neurosurgery, Medical University, Lublin, Poland
| |
Collapse
|
5
|
Fluorinated Human Serum Albumin as Potential 19F Magnetic Resonance Imaging Probe. Molecules 2023; 28:molecules28041695. [PMID: 36838682 PMCID: PMC9959765 DOI: 10.3390/molecules28041695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 02/06/2023] [Accepted: 02/09/2023] [Indexed: 02/12/2023] Open
Abstract
Fluorinated human serum albumin conjugates were prepared and tested as potential metal-free probes for 19F magnetic resonance imaging (MRI). Each protein molecule was modified by several fluorine-containing compounds via the N-substituted natural acylating reagent homocysteine thiolactone. Albumin conjugates retain the protein's physical and biological properties, such as its 3D dimensional structure, aggregation ability, good solubility, proteolysis efficiency, biocompatibility, and low cytotoxicity. A dual-labeled with cyanine 7 fluorescence dye and fluorine reporter group albumin were synthesized for simultaneous fluorescence imaging and 19F MRI. The preliminary in vitro studies show the prospects of albumin carriers for multimodal imaging.
Collapse
|
6
|
Iacob R, Stoicescu ER, Cerbu S, Manolescu DL, Bardan R, Cumpănaş A. Could Biparametric MRI Replace Multiparametric MRI in the Management of Prostate Cancer? Life (Basel) 2023; 13:465. [PMID: 36836822 PMCID: PMC9961917 DOI: 10.3390/life13020465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 02/02/2023] [Accepted: 02/04/2023] [Indexed: 02/11/2023] Open
Abstract
Prostate cancer (PCa) is a worldwide epidemiological problem, since it is one of the most prevalent types of neoplasia among men, and the third-leading cause of cancer-related deaths, after lung and colorectal tumors. Unfortunately, the early stages of PCa have a wide range of unspecific symptoms. For these reasons, early diagnosis and accurate evaluation of suspicious lesions are crucial. Multiparametric MRI (mpMRI) is currently the imaging modality of choice for diagnostic screening and local staging of PCa, but also has a leading role in guiding biopsies and in treatment biparametric MRI (bpMRI) could partially replace mpMRI due to its lack of adverse reactions caused by contrast agents, relatively lower costs, and shorter acquisition time. Further, 31 relevant articles regarding the advantages and disadvantages of the aforementioned imaging techniques were scanned. As a result, while bpMRI has comparable accuracy in detecting PCa, its roles in the other steps of PCa management are limited.
Collapse
Affiliation(s)
- Roxana Iacob
- Doctoral School, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
- Discipline of Radiology and Medical Imaging, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square No. 2, 300041 Timisoara, Romania
| | - Emil-Robert Stoicescu
- Doctoral School, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
- Discipline of Radiology and Medical Imaging, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square No. 2, 300041 Timisoara, Romania
- Research Center for Pharmaco-Toxicological Evaluations, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square No. 2, 300041 Timisoara, Romania
| | - Simona Cerbu
- Discipline of Radiology and Medical Imaging, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square No. 2, 300041 Timisoara, Romania
| | - Diana-Luminiţa Manolescu
- Discipline of Radiology and Medical Imaging, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square No. 2, 300041 Timisoara, Romania
- Center for Research and Innovation in Precision Medicine of Respiratory Diseases (CRIPMRD), “Victor Babeș” University of Medicine and Pharmacy, 300041 Timișoara, Romania
| | - Răzvan Bardan
- Discipline of Urology, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square No. 2, 300041 Timisoara, Romania
| | - Alin Cumpănaş
- Discipline of Urology, “Victor Babes” University of Medicine and Pharmacy Timisoara, Eftimie Murgu Square No. 2, 300041 Timisoara, Romania
| |
Collapse
|
7
|
Liu X, Zhang Y, Cui X, Fan T, Shu J, Li H, Huo X, Lu C. Gadopentetate meglumine activates mast cells to cause IgE-independent allergic reactions both in vitro and in vivo. Int Immunopharmacol 2022; 106:108602. [DOI: 10.1016/j.intimp.2022.108602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 01/19/2022] [Accepted: 01/30/2022] [Indexed: 11/05/2022]
|
8
|
The Effect of Magnetic Field Gradient and Gadolinium-Based MRI Contrast Agent Dotarem on Mouse Macrophages. Cells 2022; 11:cells11050757. [PMID: 35269379 PMCID: PMC8909262 DOI: 10.3390/cells11050757] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 02/10/2022] [Accepted: 02/14/2022] [Indexed: 02/04/2023] Open
Abstract
Magnetic resonance imaging (MRI) is widely used in diagnostic medicine. MRI uses the static magnetic field to polarize nuclei spins, fast-switching magnetic field gradients to generate temporal and spatial resolution, and radiofrequency (RF) electromagnetic waves to control the spin orientation. All these forms of magnetic static and electromagnetic RF fields interact with human tissue and cells. However, reports on the MRI technique's effects on the cells and human body are often inconsistent or contradictory. In both research and clinical MRI, recent progress in improving sensitivity and resolution is associated with the increased magnetic field strength of MRI magnets. Additionally, to improve the contrast of the images, the MRI technique often employs contrast agents, such as gadolinium-based Dotarem, with effects on cells and organs that are still disputable and not fully understood. Application of higher magnetic fields requires revisiting previously observed or potentially possible bio-effects. This article focuses on the influence of a static magnetic field gradient with and without a gadolinium-based MRI contrast agent (Dotarem) and the cellular and molecular effects of Dotarem on macrophages.
Collapse
|
9
|
Tsai YF, Yang JS, Tsai FJ, Lu CC, Chiu YJ, Tsai SC. In Vitro Toxicological Assessment of Gadodiamide in Normal Brain SVG P12 Cells. In Vivo 2021; 35:2621-2630. [PMID: 34410949 DOI: 10.21873/invivo.12544] [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: 05/01/2021] [Revised: 05/15/2021] [Accepted: 06/01/2021] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM Magnetic resonance imaging (MRI) is a technique for evaluating patients with primary and metastatic tumors. The contrast agents improve the diagnostic accuracy of MRI. Large quantities of a contrast agent must be administrated into the patient to obtain useful images, which leads to cell injury. Gadolinium has been reported to cause central lobular necrosis of the liver and nephrogenic systemic fibrosis. However, the toxicity caused on brain tissue is uncertain. MATERIALS AND METHODS This study mainly aimed on the in vitro study of high concentration (2 and 5-fold of normal concentration) gadolinium-based contrast agents (GBCAs), gadodiamide (Omniscan®), on normal brain glial SVG P12 cells. MTT assay, DAPI staining, immunofluorescent staining, LysoTracker Red staining, and western blotting analysis were applied on the cells. RESULTS The viability of gadodiamide (1.3, 2.6, 5.2, 13 and 26 mM)-treated SVG P12 cells was significantly reduced after 24 h of incubation. Gadodiamide caused significant autophagic flux at 2.6, 5.2 and 13.0 mM as seen by acridine orange (AO) staining, LC-3-GFP and LysoTracker Red staining. The expression levels of autophagy-related proteins such as beclin-1, ATG-5, ATG-14 and LC-3 II were up-regulated after 24 h of gadodiamide incubation. Autophagy inhibitors including 3-methyladenine (3-MA), chloroquine (CQ) and bafilomycin A1 (Baf) significantly alleviated the autophagic cell death effect of gadodiamide on normal brain glial SVG P12 cells. Gadodiamide induced significant apoptotic effects at 5.2 mM and 13.0 mM as seen by DAPI staining and the pan-caspase inhibitor significantly alleviated the apoptotic effect. Gadodiamide at 5.2 mM and 13.0 mM inhibited antiapoptotic protein expression levels of Bcl-2 and Bcl-XL, while promoted pro-apoptotic protein expression levels of Bax, BAD, cytochrome c, Apaf-1, cleaved-caspase-9 and cleaved-caspase-3. CONCLUSION Normal brain glial SVG P12 cells treated with high concentrations of gadodiamide can undergo autophagy and apoptosis.
Collapse
Affiliation(s)
- Yuh-Feng Tsai
- Department of Diagnostic Radiology, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan, R.O.C.,School of Medicine, Fu-Jen Catholic University, New Taipei, Taiwan, R.O.C
| | - Jai-Sing Yang
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan, R.O.C
| | - Fuu-Jen Tsai
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan, R.O.C.,China Medical University Children's Hospital, China Medical University, Taichung, Taiwan, R.O.C
| | - Chi-Cheng Lu
- Department of Sport Performance, National Taiwan University of Sport, Taichung, Taiwan, R.O.C
| | - Yu-Jen Chiu
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Taipei Veterans General Hospital, Taipei, Taiwan, R.O.C.; .,Department of Surgery, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan, R.O.C.,Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan, R.O.C
| | - Shih-Chang Tsai
- Department of Biological Science and Technology, China Medical University, Taichung, Taiwan, R.O.C.
| |
Collapse
|
10
|
So YH, Lee W, Park EA, Kim PK. Investigation of the Characteristics of New, Uniform, Extremely Small Iron-Based Nanoparticles as T1 Contrast Agents for MRI. Korean J Radiol 2021; 22:1708-1718. [PMID: 34402245 PMCID: PMC8484154 DOI: 10.3348/kjr.2020.1455] [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: 12/13/2020] [Revised: 04/06/2021] [Accepted: 05/10/2021] [Indexed: 11/21/2022] Open
Abstract
Objective The purpose of this study was to evaluate the magnetic resonance (MR) characteristics and applicability of new, uniform, extremely small iron-based nanoparticles (ESIONs) with 3–4-nm iron cores using contrast-enhanced magnetic resonance angiography (MRA). Materials and Methods Seven types of ESIONs were used in phantom and animal experiments with 1.5T, 3T, and 4.7T scanners. The MR characteristics of the ESIONs were evaluated via phantom experiments. With the ESIONs selected by the phantom experiments, animal experiments were performed on eight rabbits. In the animal experiments, the in vivo kinetics and enhancement effect of the ESIONs were evaluated using half-diluted and non-diluted ESIONs. The between-group differences were assessed using a linear mixed model. A commercially available gadolinium-based contrast agent (GBCA) was used as a control. Results All ESIONs showed a good T1 shortening effect and were applicable for MRA at 1.5T and 3T. The relaxivity ratio of the ESIONs increased with increasing magnetic field strength. In the animal experiments, the ESIONs showed peak signal intensity on the first-pass images and persistent vascular enhancement until 90 minutes. On the 1-week follow-up images, the ESIONs were nearly washed out from the vascular structures and organs. The peak signal intensity on the first-pass images showed no significant difference between the non-diluted ESIONs with 3-mm iron cores and GBCA (p = 1.000). On the 10-minutes post-contrast images, the non-diluted ESIONs showed a significantly higher signal intensity than did the GBCA (p < 0.001). Conclusion In the phantom experiments, the ESIONs with 3–4-nm iron oxide cores showed a good T1 shortening effect at 1.5T and 3T. In the animal experiments, the ESIONs with 3-nm iron cores showed comparable enhancement on the first-pass images and superior enhancement effect on the delayed images compared to the commercially available GBCA at 3T.
Collapse
Affiliation(s)
- Young Ho So
- Department of Radiology, SMG-SNU Boramae Medical Center, Seoul, Korea.,Department of Radiology, Seoul National University College of Medicine, Seoul, Korea
| | - Whal Lee
- Department of Radiology, Seoul National University College of Medicine, Seoul, Korea.,Department of Radiology, Seoul National University Hospital, Seoul, Korea.,Institute of Radiation Medicine, Seoul National University Medical Research Center, Seoul, Korea.
| | - Eun Ah Park
- Department of Radiology, Seoul National University College of Medicine, Seoul, Korea.,Department of Radiology, Seoul National University Hospital, Seoul, Korea
| | - Pan Ki Kim
- Department of Radiology and Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| |
Collapse
|
11
|
Jeon M, Halbert MV, Stephen ZR, Zhang M. Iron Oxide Nanoparticles as T 1 Contrast Agents for Magnetic Resonance Imaging: Fundamentals, Challenges, Applications, and Prospectives. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e1906539. [PMID: 32495404 PMCID: PMC8022883 DOI: 10.1002/adma.201906539] [Citation(s) in RCA: 173] [Impact Index Per Article: 57.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Revised: 01/15/2020] [Accepted: 02/10/2020] [Indexed: 05/23/2023]
Abstract
Gadolinium-based chelates are a mainstay of contrast agents for magnetic resonance imaging (MRI) in the clinic. However, their toxicity elicits severe side effects and the Food and Drug Administration has issued many warnings about their potential retention in patients' bodies, which causes safety concerns. Iron oxide nanoparticles (IONPs) are a potentially attractive alternative, because of their nontoxic and biodegradable nature. Studies in developing IONPs as T1 contrast agents have generated promising results, but the complex, interrelated parameters influencing contrast enhancement make the development difficult, and IONPs suitable for T1 contrast enhancement have yet to make their way to clinical use. Here, the fundamental principles of MRI contrast agents are discussed, and the current status of MRI contrast agents is reviewed with a focus on the advantages and limitations of current T1 contrast agents and the potential of IONPs to serve as safe and improved alternative to gadolinium-based chelates. The past advances and current challenges in developing IONPs as a T1 contrast agent from a materials science perspective are presented, and how each of the key material properties and environment variables affects the performance of IONPs is assessed. Finally, some potential approaches to develop high-performance and clinically relevant T1 contrast agents are discussed.
Collapse
Affiliation(s)
- Mike Jeon
- Department of Materials Science & Engineering, University of Washington, Seattle, WA, 98195, USA
| | - Mackenzie V Halbert
- Department of Materials Science & Engineering, University of Washington, Seattle, WA, 98195, USA
| | - Zachary R Stephen
- Department of Materials Science & Engineering, University of Washington, Seattle, WA, 98195, USA
| | - Miqin Zhang
- Department of Materials Science & Engineering, University of Washington, Seattle, WA, 98195, USA
| |
Collapse
|
12
|
Chen CW, Ting H, Chen PY, Weng JC, Hsu YC, Wang SC, Tseng YH, Huang YK. Usefulness of triggered non-contrast-enhanced magnetic resonance angiography in assessing lower extremity venous disease. Medicine (Baltimore) 2021; 100:e25809. [PMID: 34011044 PMCID: PMC8137012 DOI: 10.1097/md.0000000000025809] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 04/15/2021] [Indexed: 01/05/2023] Open
Abstract
Although venous duplex ultrasonography (USG) is reliable for diagnosing lower extremity venous disease (LEVD), cross-sectional imaging studies were usually required before intervention or surgery. Patients of LEVD with renal insufficiency usually restrict the use of contrast-enhanced imaging modalities. In seeking an alternative imaging solution for these patients, we explore the clinical utility of triggered angiography non-contrast-enhanced magnetic resonance imaging (TRANCE-MRI) in the assessment of LEVD.We collected data from patients presenting to a tertiary wound-care center with symptoms of LEVD from April 2017-November 2019. Each participant underwent baseline USG followed by TRANCE-MRI on a 1.5T MR scanner (Philips Ingenia, Philips Healthcare, Best, The Netherlands). Inter-rater reliability was measured using Cohen's kappa (κ).All 80 participants (mean age, 61.9 ± 14.8 years; 35 males, 45 females) were assessed and were classified into one of five disease groups, deep vein thrombosis (n = 38), venous static ulcer (n = 16), symptomatic varicose veins (n = 18), recurrent varicose veins (n = 3), and lymphoedema (n = 5). The inter-rater reliability between TRANCE-MRI and doppler USG showed substantial agreement (κ, 0.73). The sensitivity, specificity, and accuracy of TRANCE-MRI were 90.5%, 88.1%, and 88.8%, respectively. In 59 (73.8%) USG-negative patients, we were able to diagnose positive findings (deep venous thrombosis, n = 7; varicose veins, n = 15; lymphedema, n = 10; iliac vein compression with thrombosis, n = 6; external venous compression, n = 5; vena cava anomaly, n = 2; occult peripheral artery disease, n = 5; ccluded bypass graft, n = 1) by using TRANCE-MRI. Of these, 9 (15.3%) patients underwent additional vascular surgery based on positive TRANCE-MRI findings.TRANCE technique provides the limb's entire venous drainage in clear images without background contamination by associated arterial imaging. Additionally, simultaneous evaluation of bilateral lower extremities can help determine the lesion's exact site. Although TRANCE-MRI can provide MR arteriography and MR venography, we recommend performing only MR venography in symptomatic LEVD patients because the incidence of occult arterial disease is low.
Collapse
Affiliation(s)
- Chien-Wei Chen
- Institute of Medicine, Chung Shan Medical University, Taichung
- Department of Diagnostic Radiology, Chang Gung Memorial Hospital Chiayi Branch, College of Medicine, Chang Gung University, Chiayi and Taoyuan
- Department of Medical Imaging and Radiology, Shu-Zen Junior College of Medicine and Management, Kaohsiung
| | - Hua Ting
- Institute of Medicine, Chung Shan Medical University, Taichung
- Department of Physical Medicine and Rehabilitation, Sleep Medicine Center, Chung Shan Medical University Hospital, Taichung
| | - Pang-Yen Chen
- Department of Emergency Medicine, Mackay Memorial Hospital, Institute of Public Health, School of Medicine, National Yang-Ming University, Yuanpei University of Medical Technology, Taipei and Hsinchu
| | - Jun-Cheng Weng
- Institute of Medicine, Chung Shan Medical University, Taichung
- Department of Psychiatry, Chang Gung Memorial Hospital Chiayi Branch, Department of Medical Imaging and Radiological Sciences
| | - Yin-Chen Hsu
- Department of Diagnostic Radiology, Chang Gung Memorial Hospital Chiayi Branch, College of Medicine, Chang Gung University, Chiayi and Taoyuan
| | - Shih-Chung Wang
- Department of Diagnostic Radiology, Chang Gung Memorial Hospital Chiayi Branch, College of Medicine, Chang Gung University, Chiayi and Taoyuan
- Department of Medical Imaging and Radiology, Shu-Zen Junior College of Medicine and Management, Kaohsiung
| | - Yuan-Hsi Tseng
- Division of Thoracic and Cardiovascular Surgery, Chang Gung Memorial Hospital Chiayi Branch, College of Medicine, Chang Gung University, Chiayi and Taoyuan, Taiwan
| | - Yao-Kuang Huang
- Division of Thoracic and Cardiovascular Surgery, Chang Gung Memorial Hospital Chiayi Branch, College of Medicine, Chang Gung University, Chiayi and Taoyuan, Taiwan
| |
Collapse
|
13
|
Chauhan G, Upadhyay A. Gadolinium-based contrast agent-induced neurotoxicity: seeing is believing! BMJ Case Rep 2021; 14:e241372. [PMID: 33500314 PMCID: PMC7843330 DOI: 10.1136/bcr-2020-241372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/09/2021] [Indexed: 01/28/2023] Open
Affiliation(s)
- Gaurav Chauhan
- Chronic Pain Division, Department of Anesthesiology and Perioperative Medicine, UPMC, Pittsburgh, Pennsylvania, USA
| | - Aman Upadhyay
- Anesthesiology, Pain Management and Perioperative Medicine, Henry Ford Health System, Detroit, Michigan, USA
| |
Collapse
|
14
|
Li Y, Li B, Wang X, Meng Y, Bai L, Zheng Y. Safe and efficient magnetic resonance imaging of acute myocardial infarction with gadolinium-doped carbon dots. Nanomedicine (Lond) 2020; 15:2385-2398. [PMID: 32914700 DOI: 10.2217/nnm-2020-0160] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Aim: The magneto-fluorescent gadolinium-doped carbon dots (Gd-CDs) were developed as a cardiac MR imaging contrast agent to detect the infarcted myocardium on a myocardial ischemia/reperfusion (I/R) mice model. Materials & methods: The chemophysical features, cardiac MR imaging effect, biodistribution and biocompatibility of Gd-CDs were studied. Results: The ultrasmall size and good aqueous dispersibility endows Gd-CDs with high longitudinal relaxivity, intense fluorescence, excellent physiological stability and superior biocompatibility. More importantly, Gd-CDs preferentially target the infarcts as determined by the confocal microscopy and MR imaging on the I/R mice at the acute stage of myocardial infarction. Conclusion: Gd-CDs manifest great potential for development as an MR imaging contrast agent to facilitate accurate visualization and image-guided therapy of acute myocardial infarction.
Collapse
Affiliation(s)
- Yingxu Li
- Department of Pharmacology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, PR China
| | - Bing Li
- Department of Pharmacology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, PR China
| | - Xuechun Wang
- Department of Chemistry & Biology, School of Pharmaceutical Sciences, Capital Medical University, Beijing, 100069, PR China
| | - Yan Meng
- Department of Pathology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, PR China
| | - Lu Bai
- Department of Pharmacology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, PR China
| | - Yuanyuan Zheng
- Department of Pharmacology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, PR China
| |
Collapse
|
15
|
Novel Diagnostic Options without Contrast Media or Radiation: Triggered Angiography Non-Contrast-Enhanced Sequence Magnetic Resonance Imaging in Treating Different Leg Venous Diseases. Diagnostics (Basel) 2020; 10:diagnostics10060355. [PMID: 32485855 PMCID: PMC7344462 DOI: 10.3390/diagnostics10060355] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 05/23/2020] [Accepted: 05/27/2020] [Indexed: 02/07/2023] Open
Abstract
OBJECTIVES Venous diseases in the lower extremities long lacked an objective diagnostic tool prior to the advent of the triggered angiography non-contrast-enhanced (TRANCE) technique. METHODS An observational study with retrospective data analysis. MATERIALS Between April 2017 and June 2019, 66 patients were evaluated for venous diseases through TRANCE-magnetic resonance imaging (MRI) and were grouped according to whether they had occlusive venous (OV) disease, a static venous ulcer (SU), or symptomatic varicose veins (VV). The clinical appliance of TRANCE-MRI was analysed by groups. RESULTS In total, 63 patients completed the study. TRANCE-MRI could identify venous thrombosis, including that of the abdominal and pelvic vessels, and it enabled the timely treatment of underlying diseases in patients with OV disease. TRANCE-MRI was statistically compared with the duplex scan, the gold standard to exclude deep vein thrombosis (DVT) in the legs, with regard to their abilities to detect venous thrombosis by using Cohen's kappa coefficient at a compatible value of 0.711. It could provide the occlusion degree of the peripheral artery for treating an SU. Finally, TRANCE-MRI can be used to outline all collateral veins and occult thrombi before treating symptomatic or recurrent VV to ensure a perfect surgical plan and to avoid complications. CONCLUSIONS TRANCE-MRI is an innovative tool in the treatment of versatile venous pathology in the lower extremities and is widely used for vascular diseases in our institution.
Collapse
|
16
|
Human Serum Albumin Labelled with Sterically-Hindered Nitroxides as Potential MRI Contrast Agents. Molecules 2020; 25:molecules25071709. [PMID: 32276437 PMCID: PMC7180620 DOI: 10.3390/molecules25071709] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 04/03/2020] [Accepted: 04/07/2020] [Indexed: 11/29/2022] Open
Abstract
Four albumin-nitroxide conjugates were prepared and tested as metal-free organic radical contrast agents (ORCAs) for magnetic resonance imaging (MRI). Each human serum albumin (HSA) carrier bears multiple nitroxides conjugated via homocysteine thiolactones. These molecular conjugates retain important physical and biological properties of their HSA component, and the resistance of their nitroxide groups to bioreduction was retained or enhanced. The relaxivities are similar for these four conjugates and are much greater than those of their individual components: the HSA or the small nitroxide molecules. This new family of conjugates has excellent prospects for optimization as ORCAs.
Collapse
|
17
|
The semi-automated algorithm for the detection of bone marrow oedema lesions in patients with axial spondyloarthritis. Rheumatol Int 2020; 40:625-633. [PMID: 31955226 DOI: 10.1007/s00296-020-04511-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Accepted: 01/02/2020] [Indexed: 10/25/2022]
Abstract
The aim of the study was to create the efficient tool for semi-automated detection of bone marrow oedema lesions in patients with axial spondyloarthritis (axSpA). MRI examinations of 22 sacroiliac joints of patients with confirmed axSpA-related sacroiliitis (median SPARCC score: 14 points) were included into the study. Design of our algorithm is based on Maksymowych et al. evaluation method and consists of the following steps: manual segmentation of bones (T1W sequence), automated detection of reference signal region, sacroiliac joint central lines and ROIs, a division of ROIs into quadrants, automated detection of inflammatory changes (STIR sequence). As a gold standard, two sets of manual lesion delineations were created. Two approaches to the performance assessment of lesion detection were considered: pixel-wise (detections compared pixel by pixel) and quadrant-wise (quadrant to quadrant). Statistical analysis was performed using Spearman's correlation coefficient. Correlation coefficient obtained for pixel-wise comparison of semi-automated and manual detections was 0.87 (p = 0.001), while for quadrant-wise analysis was 0.83 (p = 0.001). The correlation between two sets of manual detections was 0.91 for pixel-wise comparison (p = 0.001) and 0.88 (p = 0.001) for quadrant-wise approach. Spearman's correlation between two manual assessments was not statistically different from the correlation between semi-automated and manual evaluations, both for pixel- (p = 0.14) and quadrant-wise (p = 0.17) analysis. Average single slice processing time: 0.64 ± 0.30 s. Our method allows for objective detection of bone marrow oedema lesions in patients with axSpA. The quantification of affected pixels and quadrants has comparable reliability to manual assessment.
Collapse
|
18
|
Huang YK, Tseng YH, Lin CH, Tsai YH, Hsu YC, Wang SC, Chen CW. Evaluation of venous pathology of the lower extremities with triggered angiography non-contrast-enhanced magnetic resonance imaging. BMC Med Imaging 2019; 19:96. [PMID: 31847822 PMCID: PMC6918566 DOI: 10.1186/s12880-019-0395-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Accepted: 11/26/2019] [Indexed: 12/16/2022] Open
Abstract
Background To explore the diagnostic performance of triggered angiography non-contrast-enhanced magnetic resonance imaging (TRANCE-MRI) for the evaluation of venous pathology of the lower extremity. Methods This was a single-centre prospective cohort study of 25 patients with suspected venous disease in the lower extremities. Each patient received Doppler ultrasonography (for venous evaluation) before the scheduled TRANCE-MRI (for venous and arterial evaluations) on a 1.5 T MR scanner (Philips Ingenia, Philips Healthcare, Best, the Netherlands), followed by lymphography and computed tomography angiography that were arranged according to the diagnostic indications. Results The sensitivity, specificity and accuracy of TRANCE-MRI were 85.7%, 88/9 and 88%, respectively. The inter-rater agreement for deep vein thrombosis (DVT) of the thigh between the ultrasonography and TRANCE-MRI results was substantial agreement (Cohen’s kappa κ, 0.72). In ultrasonography-negative cases, TRANCE-MRI detected four additional cases (16%, 4/25) of DVT; three cases (12%, 3/25) of venous compression caused by pelvic lymphadenopathy, hip prosthesis or knee joint effusion; one case (4%, 1/25) of vena cava anomaly; two cases (8%, 2/25) of occult peripheral artery disease (PAD); and one case (4%, 1/25) of an occluded bypass graft. Conclusion TRANCE-MRI can be used as an alternative and objective tool for assessing lower extremity diseases, especially suspected venous pathology. Compared with ultrasonography, TRANCE-MRI plays a better role in assessing varicose veins of the lower extremities and deep veins of the pelvis and abdomen. However, false-positive results may occur in the left common iliac vein of elderly patients. Finally, occult PAD rarely occurs in patients with suspected lower extremity venous disease. Therefore, we recommend performing the TRANCE-MRV protocol instead of the full protocol (MRV + MRA) in the clinical setting in patients with venous scenarios.
Collapse
Affiliation(s)
- Yao-Kuang Huang
- Division of Thoracic and Cardiovascular Surgery, Chang Gung Memorial Hospital, Chiayi, Taiwan.,Wound Center and Plastic Surgery, Chang Gung Memorial Hospital Chiayi Branch, Chiayi, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Yuan-Hsi Tseng
- Division of Thoracic and Cardiovascular Surgery, Chang Gung Memorial Hospital, Chiayi, Taiwan.,Wound Center and Plastic Surgery, Chang Gung Memorial Hospital Chiayi Branch, Chiayi, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Chih-Hung Lin
- Wound Center and Plastic Surgery, Chang Gung Memorial Hospital Chiayi Branch, Chiayi, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Yuan-Hsiung Tsai
- College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Department of Diagnostic Radiology, Chang Gung Memorial Hospital Chiayi Branch, Chiayi and Taoyuan, Taiwan
| | - Yin-Chen Hsu
- College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Department of Diagnostic Radiology, Chang Gung Memorial Hospital Chiayi Branch, Chiayi and Taoyuan, Taiwan
| | - Shih-Chung Wang
- College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Department of Diagnostic Radiology, Chang Gung Memorial Hospital Chiayi Branch, Chiayi and Taoyuan, Taiwan.,Department of Medical Imaging and Radiology, Shu-Zen Junior College of Medicine and Management, Kaohsiung, Taiwan
| | - Chien-Wei Chen
- College of Medicine, Chang Gung University, Taoyuan, Taiwan. .,Department of Diagnostic Radiology, Chang Gung Memorial Hospital Chiayi Branch, Chiayi and Taoyuan, Taiwan. .,Department of Medical Imaging and Radiology, Shu-Zen Junior College of Medicine and Management, Kaohsiung, Taiwan. .,Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan.
| |
Collapse
|
19
|
Magnetic Resonance Imaging as a Biomarker in Rodent Peripheral Nerve Injury Models Reveals an Age-Related Impairment of Nerve Regeneration. Sci Rep 2019; 9:13508. [PMID: 31534149 PMCID: PMC6751200 DOI: 10.1038/s41598-019-49850-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 08/24/2019] [Indexed: 12/12/2022] Open
Abstract
Assessment of myelin integrity in peripheral nerve injuries and pathologies has largely been limited to post-mortem analysis owing to the difficulty in obtaining biopsies without affecting nerve function. This is further encumbered by the small size of the tissue and its location. Therefore, the development of robust, non-invasive methods is highly attractive. In this study, we used magnetic resonance imaging (MRI) techniques, including magnetization transfer ratio (MTR), to longitudinally and non-invasively characterize both the sciatic nerve crush and lysolecithin (LCP) demyelination models of peripheral nerve injury in rodents. Electrophysiological, gene expression and histological assessments complemented the extensive MRI analyses in young and aged animals. In the nerve crush model, MTR analysis indicated a slower recovery in regions distal to the site of injury in aged animals, as well as incomplete recovery at six weeks post-crush when analyzing across the entire nerve surface. Similar regional impairments were also found in the LCP demyelination model. This research underlines the power of MTR for the study of peripheral nerve injury in small tissues such as the sciatic nerve of rodents and contributes new knowledge to the effect of aging on recovery after injury. A particular advantage of the approach is the translational potential to human neuropathies.
Collapse
|
20
|
Abstract
Ultrasound (US) and Doppler are often the first imaging to be carried out for arterial disease, and with good reason. US is noninvasive, free of radiation exposure and crucial for follow up imaging. The review that follows aims to highlight the various applications of US in imaging of the arterial system.
Collapse
Affiliation(s)
- Prashant Gupta
- Department of Radiology, Scunthorpe General Hospital, Northern Lincolnshire and Goole NHS Foundation Trust, UK
| | - Shannon Lyons
- Division of Cardiovascular Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Sandeep Hedgire
- Division of Cardiovascular Imaging, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| |
Collapse
|
21
|
Kucybała I, Ciuk S, Urbanik A, Wojciechowski W. The usefulness of diffusion-weighted imaging (DWI) and dynamic contrast-enhanced (DCE) sequences visual assessment in the early diagnosis of axial spondyloarthritis. Rheumatol Int 2019; 39:1559-1565. [PMID: 31292710 DOI: 10.1007/s00296-019-04373-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 07/04/2019] [Indexed: 01/06/2023]
Abstract
The aim of the study was to compare the diagnostic efficacy of the visual assessment of diffusion-weighted imaging (DWI) and dynamic contrast-enhanced (DCE) sequences compared to the STIR sequence in the diagnostics of active sacroiliitis in the course of axial spondyloarthritis (axSpA). The study group consisted of 49 patients who had undergone multiparametric magnetic resonance imaging of the sacroiliac joints (SIJs) due to clinical suspicion of axSpA. Two independent observers retrospectively assessed four quadrants of the SIJs for the presence of subchondral bone marrow oedema/osteitis with the use of modified SPARCC score in sequences: STIR, DWI (with ADC map) and DCE. Diagnostic efficiency parameters were calculated for DWI and DCE sequence separately, using STIR sequence as a reference. Inter-observer agreement was evaluated with the use of κ coefficient. Patients' clinical symptoms were analysed to identify the group fulfilling the imaging arm of the ASAS criteria for axSpA. Overall, 46.9% (n = 23) of patients fulfilled the imaging arm of ASAS criteria for axial spondyloarthritis. DWI with ADC map: accuracy 95.6%, sensitivity 99.4%, specificity 54.0%. DCE sequence: accuracy 96.8%, sensitivity 98.4%, specificity 79.5%. The highest level of inter-observer agreement was achieved for STIR sequence (κ = 0.888), slightly lower for DCE sequence (κ = 0.773) and the lowest for DWI with ADC (κ = 0.674). Visual assessment of the DWI and DCE sequences has high accuracy and sensitivity of bone marrow oedema/osteitis detection, but the specificity and inter-observer agreement are poor, especially for the DWI sequence with ADC maps.
Collapse
Affiliation(s)
- Iwona Kucybała
- Department of Radiology, Jagiellonian University Medical College, 19 Kopernika Street, 31-501, Krakow, Poland
| | - Szymon Ciuk
- Department of General and Interventional Radiology and Neuroradiology, Wroclaw Medical University, 213 Borowska Street, 50-556, Wroclaw, Poland
| | - Andrzej Urbanik
- Department of Radiology, Jagiellonian University Medical College, 19 Kopernika Street, 31-501, Krakow, Poland
| | - Wadim Wojciechowski
- Department of Radiology, Jagiellonian University Medical College, 19 Kopernika Street, 31-501, Krakow, Poland.
| |
Collapse
|
22
|
Tasker F, Fleming H, McNeill G, Creamer D, Walsh S. Contrast media and cutaneous reactions. Part 1. Immediate hypersensitivity reactions to contrast media and gadolinium deposition. Clin Exp Dermatol 2019; 44:839-843. [DOI: 10.1111/ced.13990] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/14/2019] [Indexed: 12/26/2022]
Affiliation(s)
- F. Tasker
- Department of Dermatology King's College Hospital London UK
| | - H. Fleming
- Department of Radiology St Vincent's University Hospital Dublin Ireland
| | - G. McNeill
- Department of Radiology St Vincent's University Hospital Dublin Ireland
| | - D. Creamer
- Department of Dermatology King's College Hospital London UK
| | - S. Walsh
- Department of Dermatology King's College Hospital London UK
| |
Collapse
|
23
|
Bouzidi Y, Barteau E, Lejeune J, Dejobert M, Gravellier B, Sirinelli D, Cottier JP, Morel B. Detection of recurrent brain tumors in children: No significant difference in sensitivity between unenhanced and contrast-enhanced MRI. Neuroradiol J 2019; 32:259-266. [PMID: 31017042 DOI: 10.1177/1971400919845619] [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 Magnetic resonance imaging (MRI) with a gadolinium injection is currently used in the follow-up of children in remission of cerebral tumors (CTs). Intracerebral gadolinium deposition has been recently reported with unknown risks. The aim of this study was to evaluate the sensitivity of unenhanced brain MRI (U-MRI) in detection of tumor recurrence. METHODS AND MATERIALS A set of 58 U-MRIs of children in remission was retrospectively evaluated by three seniors (a neuroradiologist, a pediatric and a general radiologist) and one junior to look for any recurrence. Clinical, tumoral and imaging data were collected. The final diagnosis was anatomopathological when available, or the clinicoradiological evolution. Sensitivity, specificity, predictive values and interobserver agreement were calculated. A Fisher test and Fleiss kappa coefficient were performed. RESULTS For the seniors, the U-MRI had a sensitivity of 81% (95% confidence interval (CI): 0.56-0.90), and a negative predictive value (NPV) of 82% (95% CI: 0.63-0.94). The U-MRI sensitivity, regardless of the observer, was not significantly different from the contrast-enhanced MRI sensitivity (86%) according to a Fisher test (p > 0.05). No significant difference in sensitivity within the subgroups was found. The interobserver agreement of seniors was good (κ = 0.68). CONCLUSION U-MRI brain was suboptimal for 80% of patients. Three-dimensional millimetric, fluid-attenuated inversion recovery, and diffusion would constitute helpful sequences in follow-up. Further specific studies depending on each tumor type are still required to determine whether a potential abstention of gadolinium intravenous injection should be discussed for children.
Collapse
Affiliation(s)
- Yasmina Bouzidi
- 1 Pediatric Radiology Department, Clocheville Hospital, University Hospital Center of Tours, France
| | - Emmanuel Barteau
- 1 Pediatric Radiology Department, Clocheville Hospital, University Hospital Center of Tours, France
| | - Julien Lejeune
- 2 Pediatric Oncologic Department, Clocheville Hospital, University Hospital Center of Tours, France
| | - Maelle Dejobert
- 3 Neuroradiology Department, Bretonneau Hospital, University Hospital Center of Tours, France
| | - Bastien Gravellier
- 1 Pediatric Radiology Department, Clocheville Hospital, University Hospital Center of Tours, France
| | - Dominique Sirinelli
- 1 Pediatric Radiology Department, Clocheville Hospital, University Hospital Center of Tours, France.,4 Faculty of Medicine, Francois Rabelais University, Tours, France
| | - Jean Philippe Cottier
- 3 Neuroradiology Department, Bretonneau Hospital, University Hospital Center of Tours, France.,4 Faculty of Medicine, Francois Rabelais University, Tours, France
| | - Baptiste Morel
- 1 Pediatric Radiology Department, Clocheville Hospital, University Hospital Center of Tours, France.,4 Faculty of Medicine, Francois Rabelais University, Tours, France
| |
Collapse
|
24
|
Janke HP, Güvener N, Dou W, Tiemessen DM, YantiSetiasti A, Cremers JGO, Borm PJA, Feitz WFJ, Heerschap A, Kiessling F, Oosterwijk E. Labeling of Collagen Type I Templates with a Naturally Derived Contrast Agent for Noninvasive MR Imaging in Soft Tissue Engineering. Adv Healthc Mater 2018; 7:e1800605. [PMID: 30058274 DOI: 10.1002/adhm.201800605] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 06/26/2018] [Indexed: 12/14/2022]
Abstract
In vivo monitoring of tissue-engineered constructs is important to assess their integrity, remodeling, and degradation. However, this is challenging when the contrast with neighboring tissues is low, necessitating labeling with contrast agents (CAs), but current CAs have limitations (i.e., toxicity, negative contrast, label instability, and/or inappropriate size). Therefore, a naturally derived hemin-L-lysine (HL) complex is used as a potential CA to label collagen-based templates for magnetic resonance imaging (MRI). Labeling does not change the basic characteristics of the collagen templates. When hybrid templates composed of collagen type I reinforced with degradable polymers are subcutaneously implanted in mice, longitudinal visualization by MRI is possible with good contrast and in correlation with template remodeling. In contrast, unlabeled collagen templates are hardly detectable and the fate of these templates cannot be monitored by MRI. Interestingly, tissue remodeling and vascularization are enhanced within HL-labeled templates. Thus, HL labeling is presented as a promising universal imaging marker to label tissue-engineered implants for MRI, which additionally seems to accelerate tissue regeneration.
Collapse
Affiliation(s)
- Heinz P. Janke
- Department of Urology; Radboud Institute for Molecular Life Sciences; Radboud University Medical Center; Geert Grooteplein 28 6525 GA Nijmegen The Netherlands
| | - Nihan Güvener
- Institute for Experimental Molecular Imaging; Center for Biohybrid Medical Systems Uniklinik RWTH and Helmholtz Institute for Biomedical Engineering; RWTH Aachen University; Forckenbeckstr. 55 52074 Aachen Germany
- Nano4Imaging GmbH; Zentrum für Biomedizintechnik (ZBMT); Pauwelsstrasse 17 52074 Aachen Germany
| | - Weiqiang Dou
- Department of Radiology and Nuclear Medicine; Radboud University Medical Center; PO Box 9101 6500 HB Nijmegen The Netherlands
- GE Healthcare; MR Research China; Beijing 100176 China
| | - Dorien M. Tiemessen
- Department of Urology; Radboud Institute for Molecular Life Sciences; Radboud University Medical Center; Geert Grooteplein 28 6525 GA Nijmegen The Netherlands
| | - Anglita YantiSetiasti
- Department of Urology; Radboud Institute for Molecular Life Sciences; Radboud University Medical Center; Geert Grooteplein 28 6525 GA Nijmegen The Netherlands
- Department of Anatomical Pathology; Faculty of Medicine; University of Padjadjaran; Jalan Professor Eyckman No. 38; Bandung 4016 Indonesia
| | - Jozef G. O. Cremers
- Institute for Experimental Molecular Imaging; Center for Biohybrid Medical Systems Uniklinik RWTH and Helmholtz Institute for Biomedical Engineering; RWTH Aachen University; Forckenbeckstr. 55 52074 Aachen Germany
- Nano4Imaging GmbH; Zentrum für Biomedizintechnik (ZBMT); Pauwelsstrasse 17 52074 Aachen Germany
| | - Paul J. A. Borm
- Nano4Imaging GmbH; Zentrum für Biomedizintechnik (ZBMT); Pauwelsstrasse 17 52074 Aachen Germany
| | - Wout F. J. Feitz
- Department of Urology; Radboud Institute for Molecular Life Sciences; Radboud University Medical Center; Geert Grooteplein 28 6525 GA Nijmegen The Netherlands
- Radboudumc Amalia Children's Hospital; Radboud University Medical Center; Geert Grooteplein 28 6525 GA Nijmegen The Netherlands
| | - Arend Heerschap
- Department of Radiology and Nuclear Medicine; Radboud University Medical Center; PO Box 9101 6500 HB Nijmegen The Netherlands
| | - Fabian Kiessling
- Institute for Experimental Molecular Imaging; Center for Biohybrid Medical Systems Uniklinik RWTH and Helmholtz Institute for Biomedical Engineering; RWTH Aachen University; Forckenbeckstr. 55 52074 Aachen Germany
| | - Egbert Oosterwijk
- Department of Urology; Radboud Institute for Molecular Life Sciences; Radboud University Medical Center; Geert Grooteplein 28 6525 GA Nijmegen The Netherlands
| |
Collapse
|
25
|
Abstract
Contrast-enhanced ultrasound (CEUS) is a relatively new addition to the diagnostic armamentarium in the United States. The pairing of intravenously injected contrast agents with advanced ultrasound image processing techniques permits improved detection and characterization of different tissue types compared with conventional sonography. The use and efficacy of CEUS is well established in echocardiographic applications in the United States and in many other applications worldwide. Recent approval by the U.S. Food and Drug Administration of an ultrasound contrast agent for use in evaluating adult and pediatric hepatic pathology opens the door to a new era in sonographic diagnosis. An understanding of the underlying physical and technical principles of CEUS is essential for the accurate interpretation of the information obtained from this exciting emerging modality.
Collapse
Affiliation(s)
- Jim Baun
- Mindray Innovation Center–Silicon Valley, Mountain View, CA, USA
| |
Collapse
|