Meletta R Steier L Borel N Mu L Keller C Chiotellis A Russo E Halin C Ametamey SM Schibli R Krämer SD Müller Herde A 2017 PURPOSE A shear stress-induced atherosclerosis mouse model was characterized for its expression of inflammation markers with focus on CD80. With this model, we evaluated two positron emission tomography (PET) radiotracers targeting CD80 as well as 2-deoxy-2-[18F]fluoro-D-mannose ([18F]FDM) in comparison with 2-deoxy-2-[18F]fluoro-D-glucose ([18F]FDG). PROCEDURE A flow constrictive cuff implanted around the common carotid artery in apolipoprotein E knockout mice resulted in plaque formation. CD80 expression levels and plaque histopathology were evaluated. Serial PET/X-ray computed tomography scans were performed to follow inflammation. RESULTS Plaque formation with increased levels of CD80 was observed. Histologically, plaques presented macrophage-rich and large necrotic areas covered by a thin fibrous cap. Of the CD80-specific tracers, one displayed an increased uptake in plaques by PET. Both [18F]FDG and [18F]FDM accumulated in atherosclerotic plaques. CONCLUSION This mouse model presented, similar to humans, an increased expression of CD80 which renders it suitable for non-invasively targeting CD80-positive immune cells and evaluating CD80-specific radiotracers. application/pdf https://sonar.ch/global/documents/181111 eng info:eu-repo/semantics/altIdentifier/doi/10.1007/s11307-016-0987-0 info:eu-repo/semantics/altIdentifier/pmid/27430577 info:eu-repo/semantics/openAccess Molecular imaging and biology. - 2017 ApoE KO Atherosclerosis CD80 Plaque inflammation Positron emission tomography Shear stress [18F]FDG Animals Antigens, CD Antigens, Differentiation, Myelomonocytic Apolipoproteins E Arteries Atherosclerosis B7-1 Antigen Body Weight Disease Models, Animal Gene Expression Regulation Immunohistochemistry Lipids Mice, Inbred C57BL Mice, Knockout Positron-Emission Tomography Radiopharmaceuticals Stress, Mechanical Tomography, X-Ray Computed Up-Regulation CD80 Is Upregulated in a Mouse Model with Shear Stress-Induced Atherosclerosis and Allows for Evaluating CD80-Targeting PET Tracers. http://purl.org/coar/resource_type/c_6501