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Huang B, Geng D, Zhan S, Li H, Xu X, Yi C. Magnetic resonance imaging characteristics of hepatocyte apoptosis (induced by right portal vein ligation) and necrosis (induced by combined right portal vein and right hepatic artery ligation) in rats. J Int Med Res 2014; 43:80-92. [PMID: 25446177 DOI: 10.1177/0300060513503760] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Objective Using magnetic resonance imaging (MRI), this study aimed to demonstrate the appearance of hepatocytes following ligation of the right portal vein or combined ligation of the right portal vein and right hepatic artery, in a rat model. Methods Ninety adult Sprague–Dawley rats (body weight 250–300 g) were divided into three groups ( n = 30 per group): ligation of the right portal vein (Group A); combined ligation of the right portal vein and right hepatic artery (Group B); no intervention to obstruct blood supply (control group). Rats were then randomly subdivided into five groups that underwent examination at 3 h and 1, 3, 7 and 14 days postprocedure ( n = 6 per group). Livers were examined by routine MRI, diffusion-weighted imaging (DWI) and magnetic resonance spectroscopy (MRS). After examination, each group of rats was sacrificed. Right hepatic lobes were removed and examined by pathology in six rats per timepoint; transmission electron microscopy (TEM) was undertaken in up to three rats per timepoint. Results Hepatocyte apoptosis and necrosis, by right portal vein ligation and combined right portal vein and right hepatic artery ligation respectively, were confirmed by pathology and TEM. In Group A, there were slight increases in intensity of T1- and T2-weighted images and in the apparent diffusion coefficient (ADC). In addition there were larger areas under the lactic acid and lipid peaks on MRS. In Group B, there were increased T1 and T2 signals, a decrease in the ADC and an increase of the area under the lactic acid peaks on MRS. Conclusions Hepatocyte apoptosis and necrosis induced by ligation procedures exhibited specific changes that were evident on MRI, DWI and MRS, and could be detected in vivo by MRI, in a rat model.
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Affiliation(s)
- Bingcang Huang
- Department of Radiology, Shanghai Pudong New Area Gongli Hospital, Shanghai, China
| | - Daoying Geng
- Department of Radiology, Huashan Hospital, Fudan University, Shanghai, China
| | - Songhua Zhan
- Department of Radiology, Shanghai Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Huanhuan Li
- Department of Radiology, Shanghai Pudong New Area Gongli Hospital, Shanghai, China
| | - Xiaolan Xu
- Department of Radiology, Shanghai Pudong New Area Gongli Hospital, Shanghai, China
| | - Chunyan Yi
- Department of Radiology, Shanghai Pudong New Area Gongli Hospital, Shanghai, China
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Burtea C, Ballet S, Laurent S, Rousseaux O, Dencausse A, Gonzalez W, Port M, Corot C, Elst LV, Muller RN. Development of a Magnetic Resonance Imaging Protocol for the Characterization of Atherosclerotic Plaque by Using Vascular Cell Adhesion Molecule-1 and Apoptosis-Targeted Ultrasmall Superparamagnetic Iron Oxide Derivatives. Arterioscler Thromb Vasc Biol 2012; 32:e36-48. [DOI: 10.1161/atvbaha.112.245415] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Objective—
Acute ischemic events are often caused by the disruption of lipid-rich plaques, which are frequently not angiographically visible. Vascular cell adhesion molecule-1 and apoptotic cell-targeted peptides studied during our previous work were conjugated to ultrasmall superparamagnetic iron oxide (USPIO) (USPIO-R832 for vascular cell adhesion molecule-1 targeting; USPIO-R826 for apoptosis targeting) and assessed by magnetic resonance imaging.
Methods and Results—
Apolipoprotein E knockout mice were injected with 0.1 mmol Fe/kg body weight and were imaged on a 4.7-T Bruker magnetic resonance imaging until 24 hours after contrast agent administration. Aortic samples were then harvested and examined by histochemistry, and the magnetic resonance images and histological micrographs were analyzed with ImageJ software. The plaques enhanced by USPIO-R832 contained macrophages concentrated in the cap and a large necrotic core, whereas USPIO-R826 produced a negative enhancement of plaques rich in macrophages and neutral fats concentrated inside the plaque. Both USPIO derivatives colocalized with their target on histological sections and were able to detect plaques with a vulnerable morphology, but each one is detecting a specific environment.
Conclusion—
Our vascular cell adhesion molecule-1 and apoptotic cell targeted USPIO derivatives seem to be highly promising tools for atherosclerosis imaging contributing to the detection of vulnerable plaques. They are able to attain their target in low doses and as fast as 30 minutes after administration.
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Affiliation(s)
- Carmen Burtea
- From the Department of General, Organic and Biomedical Chemistry, NMR and Molecular Imaging Laboratory, University of Mons, Mons, Belgium (C.B., S.L., L.V.E., R.N.M.); and Biological Research (S.B., A.D., W.G.), Chemical Discovery (O.R., M.P.), Research Director (C.C.), Guerbet, Research Center, Aulnay-sous-Bois, France
| | - Sébastien Ballet
- From the Department of General, Organic and Biomedical Chemistry, NMR and Molecular Imaging Laboratory, University of Mons, Mons, Belgium (C.B., S.L., L.V.E., R.N.M.); and Biological Research (S.B., A.D., W.G.), Chemical Discovery (O.R., M.P.), Research Director (C.C.), Guerbet, Research Center, Aulnay-sous-Bois, France
| | - Sophie Laurent
- From the Department of General, Organic and Biomedical Chemistry, NMR and Molecular Imaging Laboratory, University of Mons, Mons, Belgium (C.B., S.L., L.V.E., R.N.M.); and Biological Research (S.B., A.D., W.G.), Chemical Discovery (O.R., M.P.), Research Director (C.C.), Guerbet, Research Center, Aulnay-sous-Bois, France
| | - Olivier Rousseaux
- From the Department of General, Organic and Biomedical Chemistry, NMR and Molecular Imaging Laboratory, University of Mons, Mons, Belgium (C.B., S.L., L.V.E., R.N.M.); and Biological Research (S.B., A.D., W.G.), Chemical Discovery (O.R., M.P.), Research Director (C.C.), Guerbet, Research Center, Aulnay-sous-Bois, France
| | - Anne Dencausse
- From the Department of General, Organic and Biomedical Chemistry, NMR and Molecular Imaging Laboratory, University of Mons, Mons, Belgium (C.B., S.L., L.V.E., R.N.M.); and Biological Research (S.B., A.D., W.G.), Chemical Discovery (O.R., M.P.), Research Director (C.C.), Guerbet, Research Center, Aulnay-sous-Bois, France
| | - Walter Gonzalez
- From the Department of General, Organic and Biomedical Chemistry, NMR and Molecular Imaging Laboratory, University of Mons, Mons, Belgium (C.B., S.L., L.V.E., R.N.M.); and Biological Research (S.B., A.D., W.G.), Chemical Discovery (O.R., M.P.), Research Director (C.C.), Guerbet, Research Center, Aulnay-sous-Bois, France
| | - Marc Port
- From the Department of General, Organic and Biomedical Chemistry, NMR and Molecular Imaging Laboratory, University of Mons, Mons, Belgium (C.B., S.L., L.V.E., R.N.M.); and Biological Research (S.B., A.D., W.G.), Chemical Discovery (O.R., M.P.), Research Director (C.C.), Guerbet, Research Center, Aulnay-sous-Bois, France
| | - Claire Corot
- From the Department of General, Organic and Biomedical Chemistry, NMR and Molecular Imaging Laboratory, University of Mons, Mons, Belgium (C.B., S.L., L.V.E., R.N.M.); and Biological Research (S.B., A.D., W.G.), Chemical Discovery (O.R., M.P.), Research Director (C.C.), Guerbet, Research Center, Aulnay-sous-Bois, France
| | - Luce Vander Elst
- From the Department of General, Organic and Biomedical Chemistry, NMR and Molecular Imaging Laboratory, University of Mons, Mons, Belgium (C.B., S.L., L.V.E., R.N.M.); and Biological Research (S.B., A.D., W.G.), Chemical Discovery (O.R., M.P.), Research Director (C.C.), Guerbet, Research Center, Aulnay-sous-Bois, France
| | - Robert N. Muller
- From the Department of General, Organic and Biomedical Chemistry, NMR and Molecular Imaging Laboratory, University of Mons, Mons, Belgium (C.B., S.L., L.V.E., R.N.M.); and Biological Research (S.B., A.D., W.G.), Chemical Discovery (O.R., M.P.), Research Director (C.C.), Guerbet, Research Center, Aulnay-sous-Bois, France
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Mahmoudi M, Serpooshan V, Laurent S. Engineered nanoparticles for biomolecular imaging. NANOSCALE 2011; 3:3007-26. [PMID: 21717012 DOI: 10.1039/c1nr10326a] [Citation(s) in RCA: 158] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
In recent years, the production of nanoparticles (NPs) and exploration of their unusual properties have attracted the attention of physicists, chemists, biologists and engineers. Interest in NPs arises from the fact that the mechanical, chemical, electrical, optical, magnetic, electro-optical and magneto-optical properties of these particles are different from their bulk properties and depend on the particle size. There are numerous areas where nanoparticulate systems are of scientific and technological interest, particularly in biomedicine where the emergence of NPs with specific properties (e.g. magnetic and fluorescence) for contrast agents can lead to advancing the understanding of biological processes at the biomolecular level. This review will cover a full description of the physics of various imaging methods, including MRI, optical techniques, X-rays and CT. In addition, the effect of NPs on the improvement of the mentioned non-invasive imaging methods will be discussed together with their advantages and disadvantages. A detailed discussion will also be provided on the recent advances in imaging agents, such as fluorescent dye-doped silica NPs, quantum dots, gold- and engineered polymeric-NPs, superparamagnetic iron oxide NPs (SPIONs), and multimodal NPs (i.e. nanomaterials that are active in both MRI and optical methods), which are employed to overcome many of the limitations of conventional contrast agents (e.g. gadolinium).
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Affiliation(s)
- Morteza Mahmoudi
- National Cell Bank, Pasteur Institute of Iran, Tehran, 11365-8639, Iran
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