ArticleEJNMMI research2014
Utility of (18) F-FDG and (11)C-PBR28 microPET for the assessment of rat aortic aneurysm inflammation.
Article in EJNMMI research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 17 citations in OpenAlex.
- "Attractive" Treatment for Abdominal Aortic Aneurysm Repair: Magnetic Localization of Silk-Iron Packaged Extracellular Vesicles.Journal of functional biomaterials · 2025Article
- Chemokine Receptor 2 Is a Theranostic Biomarker for Abdominal Aortic Aneurysms.JACC. Basic to translational science · 2025Article
- Pilot first-in-human CCR2 PET/CT to detect abdominal aortic aneurysm wall instability.Theranostics · 2025Article
- A dual tracer [Bioelectronic medicine · 2022Article
- Prospect of positron emission tomography for abdominal aortic aneurysm risk stratification.Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology · 2021Review
- [EJNMMI research · 2020Article
- CCR2 Positron Emission Tomography for the Assessment of Abdominal Aortic Aneurysm Inflammation and Rupture Prediction.Circulation. Cardiovascular imaging · 2020Article
- Characterization of the 18 kDa translocator protein (TSPO) expression in post-mortem normal and Alzheimer's disease brains.Brain pathology (Zurich, Switzerland) · 2020Article
- Tracking Macrophage Infiltration in a Mouse Model of Pancreatic Cancer with the Positron Emission Tomography Tracer [11C]PBR28.The Journal of surgical research · 2018Article
- Positron Emission Tomography Imaging of Macrophages in Atherosclerosis withContrast media & molecular imaging · 2018Article
- In vivo imaging of inflammation and oxidative stress in a nonhuman primate model of cardiac sympathetic neurodegeneration.NPJ Parkinson's disease · 2018Article
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Authors and funding
10 authors at 3 institutions in 1 country.
Funding
Abstract
backgroundThe utility of (18) F-FDG and (11)C-PBR28 to identify aortic wall inflammation associated with abdominal aortic aneurysm (AAA) development was assessed.
methodsUtilizing the porcine pancreatic elastase (PPE) perfusion model, abdominal aortas of male Sprague-Dawley rats were infused with active PPE (APPE, AAA; N = 24) or heat-inactivated PPE (IPPE, controls; N = 16). Aortic diameter increases were monitored by ultrasound (US). Three, 7, and 14 days after induction, APPE and IPPE rats were imaged using (18) F-FDG microPET (approximately 37 MBq IV) and compared with (18) F-FDG autoradiography (approximately 185 MBq IV) performed at day 14. A subset of APPE (N = 5) and IPPE (N = 6) animals were imaged with both (11)C-PBR28 (approximately 19 MBq IV) and subsequent (18) F-FDG (approximately 37 MBq IV) microPET on the same day 14 days post PPE exposure. In addition, autoradiography of the retroperitoneal torso was performed after (11)C-PBR28 (approximately 1,480 MBq IV) or (18) F-FDG (approximately 185 MBq IV) administration at 14 days post PPE exposure. Aortic wall-to-muscle ratios (AMRs) were determined for microPET and autoradiography. CD68 and translocator protein (TSPO) immunohistochemistry (IHC), as well as TSPO gene expression assays, were performed for validation.
resultsMean 3 (p = 0.009), 7 (p < 0.0001) and 14 (p < 0.0001) days aortic diameter increases were significantly greater for APPE AAAs compared to IPPE controls. No significant differences in (18) F-FDG AMR were determined at days 3 and 7 post PPE exposure; however, at day 14, the mean (18) F-FDG AMR was significantly elevated in APPE AAAs compared to IPPE controls on both microPET (p = 0.0002) and autoradiography (p = 0.02). Similarly, mean (11)C-PBR28 AMR was significantly increased at day 14 in APPE AAAs compared to IPPE controls on both microPET (p = 0.04) and autoradiography (p = 0.02). For APPE AAAs, inhomogeneously increased (18) F-FDG and (11)C-PBR28 uptake was noted preferentially at the anterolateral aspect of the AAA. Compared to controls, APPE AAAs demonstrated significantly increased macrophage cell counts by CD68 IHC (p = 0.001) as well as increased TSPO staining (p = 0.004). Mean TSPO gene expression for APPE AAAs was also significantly elevated compared to IPPE controls (p = 0.0002).
conclusionRat AAA wall inflammation can be visualized using (18) F-FDG and (11)C-PBR28 microPET revealing regional differences of radiotracer uptake on microPET and autoradiography. These results support further investigation of (18) F-FDG and (11)C-PBR28 in the noninvasive assessment of human AAA development.
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