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Ahmed M, Tegnebratt T, Tran TA, Lu L, Damberg P, Gisterå A, Tarnawski L, Bone D, Hedin U, Eriksson P, Holmin S, Gustafsson B, Caidahl K. Molecular Imaging of Inflammation in a Mouse Model of Atherosclerosis Using a Zirconium-89-Labeled Probe. Int J Nanomedicine 2020; 15:6137-6152. [PMID: 32884268 PMCID: PMC7434576 DOI: 10.2147/ijn.s256395] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 07/23/2020] [Indexed: 12/31/2022] Open
Abstract
Background Beyond clinical atherosclerosis imaging of vessel stenosis and plaque morphology, early detection of inflamed atherosclerotic lesions by molecular imaging could improve risk assessment and clinical management in high-risk patients. To identify inflamed atherosclerotic lesions by molecular imaging in vivo, we studied the specificity of our radiotracer based on maleylated (Mal) human serum albumin (HSA), which targets key features of unstable atherosclerotic lesions. Materials and Methods Mal-HSA was radiolabeled with a positron-emitting metal ion, zirconium-89 (89Zr4+). The targeting potential of this probe was compared with unspecific 89Zr-HSA and 18F-FDG in an experimental model of atherosclerosis (Apoe–/– mice, n=22), and compared with wild-type (WT) mice (C57BL/6J, n=21) as controls. Results PET/MRI, gamma counter measurements, and autoradiography showed the accumulation of 89Zr-Mal-HSA in the atherosclerotic lesions of Apoe–/– mice. The maximum standardized uptake values (SUVmax) for 89Zr-Mal-HSA at 16 and 20 weeks were 26% and 20% higher (P<0.05) in Apoe–/– mice than in control WT mice, whereas no difference in SUVmax was observed for 18F-FDG in the same animals. 89Zr-Mal-HSA uptake in the aorta, as evaluated by a gamma counter 48 h postinjection, was 32% higher (P<0.01) for Apoe–/– mice than in WT mice, and the aorta-to-blood ratio was 8-fold higher (P<0.001) for 89Zr-Mal-HSA compared with unspecific 89Zr-HSA. HSA-based probes were mainly distributed to the liver, spleen, kidneys, bone, and lymph nodes. The phosphor imaging autoradiography (PI-ARG) results corroborated the PET and gamma counter measurements, showing higher accumulation of 89Zr-Mal-HSA in the aortas of Apoe–/– mice than in WT mice (9.4±1.4 vs 0.8±0.3%; P<0.001). Conclusion 89Zr radiolabeling of Mal-HSA probes resulted in detectable activity in atherosclerotic lesions in aortas of Apoe–/– mice, as demonstrated by quantitative in vivo PET/MRI. 89Zr-Mal-HSA appears to be a promising diagnostic tool for the early identification of macrophage-rich areas of inflammation in atherosclerosis.
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Affiliation(s)
- Mona Ahmed
- Department of Molecular Medicine and Surgery, Center for Molecular Medicine, BioClinicum, Karolinska Institutet, Stockholm, SE 17176, Sweden.,Department of Cardiology, Karolinska University Hospital, Stockholm, SE 17176, Sweden
| | - Tetyana Tegnebratt
- Department of Clinical Neuroscience, BioClinicum, Karolinska Institutet, Stockholm, SE 17176, Sweden.,Department of Radiopharmacy, Karolinska University Hospital, Stockholm, SE 17176, Sweden
| | - Thuy A Tran
- Department of Clinical Neuroscience, BioClinicum, Karolinska Institutet, Stockholm, SE 17176, Sweden.,Department of Radiopharmacy, Karolinska University Hospital, Stockholm, SE 17176, Sweden
| | - Li Lu
- Department of Clinical Neuroscience, BioClinicum, Karolinska Institutet, Stockholm, SE 17176, Sweden.,Department of Radiopharmacy, Karolinska University Hospital, Stockholm, SE 17176, Sweden
| | - Peter Damberg
- Department of Clinical Neuroscience, BioClinicum, Karolinska Institutet, Stockholm, SE 17176, Sweden
| | - Anton Gisterå
- Department of Medicine Solna, Center for Molecular Medicine, BioClinicum, Karolinska Institutet, Stockholm, SE 17176, Sweden
| | - Laura Tarnawski
- Department of Medicine Solna, Center for Molecular Medicine, BioClinicum, Karolinska Institutet, Stockholm, SE 17176, Sweden
| | - Dianna Bone
- Department of Molecular Medicine and Surgery, Center for Molecular Medicine, BioClinicum, Karolinska Institutet, Stockholm, SE 17176, Sweden.,Department of Clinical Physiology, Karolinska University Hospital, Stockholm, SE 17176, Sweden
| | - Ulf Hedin
- Department of Molecular Medicine and Surgery, Center for Molecular Medicine, BioClinicum, Karolinska Institutet, Stockholm, SE 17176, Sweden.,Department of Vascular Surgery, Karolinska University Hospital, Stockholm, SE 17176, Sweden
| | - Per Eriksson
- Department of Medicine Solna, Center for Molecular Medicine, BioClinicum, Karolinska Institutet, Stockholm, SE 17176, Sweden
| | - Staffan Holmin
- Department of Clinical Neuroscience, BioClinicum, Karolinska Institutet, Stockholm, SE 17176, Sweden.,Department of Neuroradiology, Karolinska University Hospital, Stockholm, SE 17176, Sweden
| | - Björn Gustafsson
- Department of Molecular Medicine and Surgery, Center for Molecular Medicine, BioClinicum, Karolinska Institutet, Stockholm, SE 17176, Sweden
| | - Kenneth Caidahl
- Department of Molecular Medicine and Surgery, Center for Molecular Medicine, BioClinicum, Karolinska Institutet, Stockholm, SE 17176, Sweden.,Department of Clinical Physiology, Karolinska University Hospital, Stockholm, SE 17176, Sweden.,Department of Clinical Physiology, Region Västra Götaland, Sahlgrenska University Hospital, Gothenburg, SE 41345, Sweden.,Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, SE 41345, Sweden
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Okamura H, Pisani LJ, Dalal AR, Emrich F, Dake BA, Arakawa M, Onthank DC, Cesati RR, Robinson SP, Milanesi M, Kotek G, Smit H, Connolly AJ, Adachi H, McConnell MV, Fischbein MP. Assessment of elastin deficit in a Marfan mouse aneurysm model using an elastin-specific magnetic resonance imaging contrast agent. Circ Cardiovasc Imaging 2014; 7:690-6. [PMID: 24814820 DOI: 10.1161/circimaging.114.001658] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Ascending aortic dissection and rupture remain a life-threatening complication in patients with Marfan syndrome. The extracellular matrix provides strength and elastic recoil to the aortic wall, thereby preventing radial expansion. We have previously shown that ascending aortic aneurysm formation in Marfan mice (Fbn1(C1039G/+)) is associated with decreased aortic wall elastogenesis and increased elastin breakdown. In this study, we test the feasibility of quantifying aortic wall elastin content using MRI with a gadolinium-based elastin-specific magnetic resonance contrast agent in Fbn1(C1039G/+) mice. METHODS AND RESULTS Ascending aorta elastin content was measured in 32-week-old Fbn1(C1039G/+) mice and wild-type (n=9 and n=10, respectively) using 7-T MRI with a T1 mapping sequence. Significantly lower enhancement (ie, lower R1 values, where R1=1/T1) was detected post-elastin-specific magnetic resonance contrast agent in Fbn1(C1039G/+) compared with wild-type ascending aortas (1.15±0.07 versus 1.36±0.05; P<0.05). Post-elastin-specific magnetic resonance contrast agent R1 values correlated with ascending aortic wall gadolinium content directly measured by inductively coupled mass spectroscopy (P=0.006). CONCLUSIONS Herein, we demonstrate that MRI with elastin-specific magnetic resonance contrast agent accurately measures elastin bound gadolinium within the aortic wall and detects a decrease in aortic wall elastin in Marfan mice compared with wild-type controls. This approach has translational potential for noninvasively assessing aneurysm tissue changes and risk, as well as monitoring elastin content in response to therapeutic interventions.
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Affiliation(s)
- Homare Okamura
- From the Departments of Cardiothoracic Surgery (H.O., A.R.D., F.E., B.A.D., M.A., M.P.F.), Radiology (L.J.P.), and Pathology (A.J.C.), Stanford University, CA; Department of Cardiovascular Surgery, Jichi Medical University, Saitama Medical Center, Saitama, Japan (H.O., M.A., H.A.); Lantheus Medical Imaging, North Billerica, MA (D.C.O., R.R.C., S.P.R.); Agilent Technologies, Yarnton, Oxford, United Kingdom (M.M.); Departments of Radiology (G.K.) and Medical Informatics and Radiology (H.S.), Erasmus MC, Rotterdam, The Netherlands; and Division of Cardiovascular Medicine, Stanford University, CA (M.V.M.)
| | - Laura J Pisani
- From the Departments of Cardiothoracic Surgery (H.O., A.R.D., F.E., B.A.D., M.A., M.P.F.), Radiology (L.J.P.), and Pathology (A.J.C.), Stanford University, CA; Department of Cardiovascular Surgery, Jichi Medical University, Saitama Medical Center, Saitama, Japan (H.O., M.A., H.A.); Lantheus Medical Imaging, North Billerica, MA (D.C.O., R.R.C., S.P.R.); Agilent Technologies, Yarnton, Oxford, United Kingdom (M.M.); Departments of Radiology (G.K.) and Medical Informatics and Radiology (H.S.), Erasmus MC, Rotterdam, The Netherlands; and Division of Cardiovascular Medicine, Stanford University, CA (M.V.M.)
| | - Alex R Dalal
- From the Departments of Cardiothoracic Surgery (H.O., A.R.D., F.E., B.A.D., M.A., M.P.F.), Radiology (L.J.P.), and Pathology (A.J.C.), Stanford University, CA; Department of Cardiovascular Surgery, Jichi Medical University, Saitama Medical Center, Saitama, Japan (H.O., M.A., H.A.); Lantheus Medical Imaging, North Billerica, MA (D.C.O., R.R.C., S.P.R.); Agilent Technologies, Yarnton, Oxford, United Kingdom (M.M.); Departments of Radiology (G.K.) and Medical Informatics and Radiology (H.S.), Erasmus MC, Rotterdam, The Netherlands; and Division of Cardiovascular Medicine, Stanford University, CA (M.V.M.)
| | - Fabian Emrich
- From the Departments of Cardiothoracic Surgery (H.O., A.R.D., F.E., B.A.D., M.A., M.P.F.), Radiology (L.J.P.), and Pathology (A.J.C.), Stanford University, CA; Department of Cardiovascular Surgery, Jichi Medical University, Saitama Medical Center, Saitama, Japan (H.O., M.A., H.A.); Lantheus Medical Imaging, North Billerica, MA (D.C.O., R.R.C., S.P.R.); Agilent Technologies, Yarnton, Oxford, United Kingdom (M.M.); Departments of Radiology (G.K.) and Medical Informatics and Radiology (H.S.), Erasmus MC, Rotterdam, The Netherlands; and Division of Cardiovascular Medicine, Stanford University, CA (M.V.M.)
| | - Benjamin A Dake
- From the Departments of Cardiothoracic Surgery (H.O., A.R.D., F.E., B.A.D., M.A., M.P.F.), Radiology (L.J.P.), and Pathology (A.J.C.), Stanford University, CA; Department of Cardiovascular Surgery, Jichi Medical University, Saitama Medical Center, Saitama, Japan (H.O., M.A., H.A.); Lantheus Medical Imaging, North Billerica, MA (D.C.O., R.R.C., S.P.R.); Agilent Technologies, Yarnton, Oxford, United Kingdom (M.M.); Departments of Radiology (G.K.) and Medical Informatics and Radiology (H.S.), Erasmus MC, Rotterdam, The Netherlands; and Division of Cardiovascular Medicine, Stanford University, CA (M.V.M.)
| | - Mamoru Arakawa
- From the Departments of Cardiothoracic Surgery (H.O., A.R.D., F.E., B.A.D., M.A., M.P.F.), Radiology (L.J.P.), and Pathology (A.J.C.), Stanford University, CA; Department of Cardiovascular Surgery, Jichi Medical University, Saitama Medical Center, Saitama, Japan (H.O., M.A., H.A.); Lantheus Medical Imaging, North Billerica, MA (D.C.O., R.R.C., S.P.R.); Agilent Technologies, Yarnton, Oxford, United Kingdom (M.M.); Departments of Radiology (G.K.) and Medical Informatics and Radiology (H.S.), Erasmus MC, Rotterdam, The Netherlands; and Division of Cardiovascular Medicine, Stanford University, CA (M.V.M.)
| | - David C Onthank
- From the Departments of Cardiothoracic Surgery (H.O., A.R.D., F.E., B.A.D., M.A., M.P.F.), Radiology (L.J.P.), and Pathology (A.J.C.), Stanford University, CA; Department of Cardiovascular Surgery, Jichi Medical University, Saitama Medical Center, Saitama, Japan (H.O., M.A., H.A.); Lantheus Medical Imaging, North Billerica, MA (D.C.O., R.R.C., S.P.R.); Agilent Technologies, Yarnton, Oxford, United Kingdom (M.M.); Departments of Radiology (G.K.) and Medical Informatics and Radiology (H.S.), Erasmus MC, Rotterdam, The Netherlands; and Division of Cardiovascular Medicine, Stanford University, CA (M.V.M.)
| | - Richard R Cesati
- From the Departments of Cardiothoracic Surgery (H.O., A.R.D., F.E., B.A.D., M.A., M.P.F.), Radiology (L.J.P.), and Pathology (A.J.C.), Stanford University, CA; Department of Cardiovascular Surgery, Jichi Medical University, Saitama Medical Center, Saitama, Japan (H.O., M.A., H.A.); Lantheus Medical Imaging, North Billerica, MA (D.C.O., R.R.C., S.P.R.); Agilent Technologies, Yarnton, Oxford, United Kingdom (M.M.); Departments of Radiology (G.K.) and Medical Informatics and Radiology (H.S.), Erasmus MC, Rotterdam, The Netherlands; and Division of Cardiovascular Medicine, Stanford University, CA (M.V.M.)
| | - Simon P Robinson
- From the Departments of Cardiothoracic Surgery (H.O., A.R.D., F.E., B.A.D., M.A., M.P.F.), Radiology (L.J.P.), and Pathology (A.J.C.), Stanford University, CA; Department of Cardiovascular Surgery, Jichi Medical University, Saitama Medical Center, Saitama, Japan (H.O., M.A., H.A.); Lantheus Medical Imaging, North Billerica, MA (D.C.O., R.R.C., S.P.R.); Agilent Technologies, Yarnton, Oxford, United Kingdom (M.M.); Departments of Radiology (G.K.) and Medical Informatics and Radiology (H.S.), Erasmus MC, Rotterdam, The Netherlands; and Division of Cardiovascular Medicine, Stanford University, CA (M.V.M.)
| | - Matteo Milanesi
- From the Departments of Cardiothoracic Surgery (H.O., A.R.D., F.E., B.A.D., M.A., M.P.F.), Radiology (L.J.P.), and Pathology (A.J.C.), Stanford University, CA; Department of Cardiovascular Surgery, Jichi Medical University, Saitama Medical Center, Saitama, Japan (H.O., M.A., H.A.); Lantheus Medical Imaging, North Billerica, MA (D.C.O., R.R.C., S.P.R.); Agilent Technologies, Yarnton, Oxford, United Kingdom (M.M.); Departments of Radiology (G.K.) and Medical Informatics and Radiology (H.S.), Erasmus MC, Rotterdam, The Netherlands; and Division of Cardiovascular Medicine, Stanford University, CA (M.V.M.)
| | - Gyula Kotek
- From the Departments of Cardiothoracic Surgery (H.O., A.R.D., F.E., B.A.D., M.A., M.P.F.), Radiology (L.J.P.), and Pathology (A.J.C.), Stanford University, CA; Department of Cardiovascular Surgery, Jichi Medical University, Saitama Medical Center, Saitama, Japan (H.O., M.A., H.A.); Lantheus Medical Imaging, North Billerica, MA (D.C.O., R.R.C., S.P.R.); Agilent Technologies, Yarnton, Oxford, United Kingdom (M.M.); Departments of Radiology (G.K.) and Medical Informatics and Radiology (H.S.), Erasmus MC, Rotterdam, The Netherlands; and Division of Cardiovascular Medicine, Stanford University, CA (M.V.M.)
| | - Henk Smit
- From the Departments of Cardiothoracic Surgery (H.O., A.R.D., F.E., B.A.D., M.A., M.P.F.), Radiology (L.J.P.), and Pathology (A.J.C.), Stanford University, CA; Department of Cardiovascular Surgery, Jichi Medical University, Saitama Medical Center, Saitama, Japan (H.O., M.A., H.A.); Lantheus Medical Imaging, North Billerica, MA (D.C.O., R.R.C., S.P.R.); Agilent Technologies, Yarnton, Oxford, United Kingdom (M.M.); Departments of Radiology (G.K.) and Medical Informatics and Radiology (H.S.), Erasmus MC, Rotterdam, The Netherlands; and Division of Cardiovascular Medicine, Stanford University, CA (M.V.M.)
| | - Andrew J Connolly
- From the Departments of Cardiothoracic Surgery (H.O., A.R.D., F.E., B.A.D., M.A., M.P.F.), Radiology (L.J.P.), and Pathology (A.J.C.), Stanford University, CA; Department of Cardiovascular Surgery, Jichi Medical University, Saitama Medical Center, Saitama, Japan (H.O., M.A., H.A.); Lantheus Medical Imaging, North Billerica, MA (D.C.O., R.R.C., S.P.R.); Agilent Technologies, Yarnton, Oxford, United Kingdom (M.M.); Departments of Radiology (G.K.) and Medical Informatics and Radiology (H.S.), Erasmus MC, Rotterdam, The Netherlands; and Division of Cardiovascular Medicine, Stanford University, CA (M.V.M.)
| | - Hideo Adachi
- From the Departments of Cardiothoracic Surgery (H.O., A.R.D., F.E., B.A.D., M.A., M.P.F.), Radiology (L.J.P.), and Pathology (A.J.C.), Stanford University, CA; Department of Cardiovascular Surgery, Jichi Medical University, Saitama Medical Center, Saitama, Japan (H.O., M.A., H.A.); Lantheus Medical Imaging, North Billerica, MA (D.C.O., R.R.C., S.P.R.); Agilent Technologies, Yarnton, Oxford, United Kingdom (M.M.); Departments of Radiology (G.K.) and Medical Informatics and Radiology (H.S.), Erasmus MC, Rotterdam, The Netherlands; and Division of Cardiovascular Medicine, Stanford University, CA (M.V.M.)
| | - Michael V McConnell
- From the Departments of Cardiothoracic Surgery (H.O., A.R.D., F.E., B.A.D., M.A., M.P.F.), Radiology (L.J.P.), and Pathology (A.J.C.), Stanford University, CA; Department of Cardiovascular Surgery, Jichi Medical University, Saitama Medical Center, Saitama, Japan (H.O., M.A., H.A.); Lantheus Medical Imaging, North Billerica, MA (D.C.O., R.R.C., S.P.R.); Agilent Technologies, Yarnton, Oxford, United Kingdom (M.M.); Departments of Radiology (G.K.) and Medical Informatics and Radiology (H.S.), Erasmus MC, Rotterdam, The Netherlands; and Division of Cardiovascular Medicine, Stanford University, CA (M.V.M.)
| | - Michael P Fischbein
- From the Departments of Cardiothoracic Surgery (H.O., A.R.D., F.E., B.A.D., M.A., M.P.F.), Radiology (L.J.P.), and Pathology (A.J.C.), Stanford University, CA; Department of Cardiovascular Surgery, Jichi Medical University, Saitama Medical Center, Saitama, Japan (H.O., M.A., H.A.); Lantheus Medical Imaging, North Billerica, MA (D.C.O., R.R.C., S.P.R.); Agilent Technologies, Yarnton, Oxford, United Kingdom (M.M.); Departments of Radiology (G.K.) and Medical Informatics and Radiology (H.S.), Erasmus MC, Rotterdam, The Netherlands; and Division of Cardiovascular Medicine, Stanford University, CA (M.V.M.).
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