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Rucher G, Cameliere L, Fendri J, Anfray A, Abbas A, Kamel S, Dupas Q, Delcroix N, Berger L, Manrique A. Molecular imaging of endothelial activation and mineralization in a mouse model of accelerated atherosclerosis. EJNMMI Res 2019; 9:80. [PMID: 31440854 PMCID: PMC6706501 DOI: 10.1186/s13550-019-0550-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 08/09/2019] [Indexed: 02/08/2023] Open
Abstract
Purpose Preclinical imaging of endothelial activation and mineralization using both positron emission tomography (PET) and magnetic resonance (MR) remains scarce. Procedures A group of uremic ApoE−/− (Ur), non-uremic ApoE−/− (NUr), and control C57Bl/6 J mice (Ctl) were investigated. Mineralization process was assessed using sodium fluoride ([18F]NaF) PET, and MR imaging combined with intravenous injection of MPIO-αVCAM-1 was used to evaluate endothelial activation. Micro- and macrocalcifications were evaluated by flame atomic absorption spectroscopy and von Kossa staining, respectively. Results Ur mice showed an active and sustained mineralization process compared to Ctl mice (p = 0.002) using [18F]NaF PET imaging. Calcium plasma level was increased in Ur (2.54 ± 0.09 mM, n = 17) compared to NUr and Ctl mice (2.24 ± 0.01, n = 22, and 2.14 ± 0.02, n = 27, respectively; p < 0.0001). Likewise, vascular calcium content was increased in Ur (0.51 ± 0.06 μg Ca2+ per milligram of dry weight aorta, n = 11) compared to NUr (0.27 ± 0.05, n = 9, p = 0.013) and Ctl (0.28 ± 0.05, n = 11, p = 0.014). Ur mice also had a higher inflammatory state using MPIO-αVCAM-1 MR (p global = 0.01, post hoc analysis Ur vs. Ctl p = 0.003) associated with increased VCAM-1 expression (p global = 0.02). Aortic remodeling at the level of the brachiocephalic trunk, brachiocephalic trunk itself, and aortic arch in Ur mice was also demonstrated using MR. Conclusions Preclinical molecular imaging allowed in vivo characterization of the early phase of atherosclerosis. [18F]NaF PET showed early and sustained vascular mineralization in uremic ApoE−/− mice. MPIO-αVCAM-1 MR imaging demonstrated aortic endothelial activation, predominantly in segments with vascular remodeling.
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Affiliation(s)
- Guillaume Rucher
- Normandie Univ, UNICAEN, EA 4650, GIP Cyceron, 14000, Caen, France
| | - Lucie Cameliere
- Normandie Univ, UNICAEN, EA 4650, GIP Cyceron, 14000, Caen, France.,Chirurgie Vasculaire, CHU de Caen, Avenue de la Côte de Nacre, 14000, Caen, France
| | - Jihene Fendri
- Normandie Univ, UNICAEN, EA 4650, GIP Cyceron, 14000, Caen, France.,Chirurgie Vasculaire, CHU de Caen, Avenue de la Côte de Nacre, 14000, Caen, France
| | - Antoine Anfray
- Normandie Univ, UNICAEN, INSERM, UMR-S U1237, Physiopathology and Imaging of Neurological Disorders (PhIND), 14000, Caen, France
| | - Ahmed Abbas
- Normandie Univ, UNICAEN, EPHE, INSERM, U1077, Neuropsychologie et Imagerie de la Mémoire Humaine, 14000, Caen, France
| | - Saïd Kamel
- EA7517, MP3CV, CURS, University of Picardie Jules Verne, Amiens, France.,Biochemistry Laboratory, Amiens University Hospital, Amiens, France
| | - Quentin Dupas
- Normandie Univ, UNICAEN, EA 4650, GIP Cyceron, 14000, Caen, France
| | - Nicolas Delcroix
- CNRS, UMS-3048, GIP Cyceron, Campus Jules Horowitz, 14000, Caen, France
| | - Ludovic Berger
- Normandie Univ, UNICAEN, EA 4650, GIP Cyceron, 14000, Caen, France.,Chirurgie Vasculaire, CHU de Caen, Avenue de la Côte de Nacre, 14000, Caen, France
| | - Alain Manrique
- Normandie Univ, UNICAEN, EA 4650, GIP Cyceron, 14000, Caen, France. .,Médecine Nucléaire, CHU de Caen, Avenue de la Côte de Nacre, 14000, Caen, France. .,GIP Cyceron, Campus Jules Horowitz, Boulevard Henri Becquerel, 5229, 14074, Caen, BP, France.
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