TY - CHAP A1 - Werner, Rudolf A1 - Wakabayashi, Hiroshi A1 - Jahns, Roland A1 - Ergün, Süleyman A1 - Jahns, Valerie A1 - Higuchi, Takahiro T1 - PET-Guided Histological Characterization of Myocardial Infiltrating Cells in a Rat Model of Myocarditis T2 - European Heart Journal - Cardiovascular Imaging N2 - No abstract available. KW - Myokarditis KW - positron emission tomography KW - myocarditis KW - PET KW - 18F-FDG Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-161127 SN - 2047-2404 N1 - This is a pre-copyedited, author-produced version of an article accepted for publication in European Heart Journal Cardiovascular Imaging following peer review. The version of record . Eur Heart J Cardiovasc Imaging. ISSN: 2047-2404. Supplement, vol. 18, i1-i3, May 2017 is available online at: 10.1093/ehjci/jex071. VL - 18 IS - Supplement PB - Oxford University Press ER - TY - JOUR A1 - Werner, Rudolf A1 - Wakabayashi, Hiroshi A1 - Bauer, Jochen A1 - Schütz, Claudia A1 - Zechmeister, Christina A1 - Hayakawa, Nobuyuki A1 - Javadi, Mehrbod S. A1 - Lapa, Constantin A1 - Jahns, Roland A1 - Ergün, Süleyman A1 - Jahns, Valerie A1 - Higuchi, Takahiro T1 - Longitudinal \(^{18}\)F-FDG PET imaging in a Rat Model of Autoimmune Myocarditis JF - European Heart Journal Cardiovascular Imaging N2 - Aims: Although mortality rate is very high, diagnosis of acute myocarditis remains challenging with conventional tests. We aimed to elucidate the potential role of longitudinal 2-Deoxy-2-\(^{18}\)F-fluoro-D-glucose (\(^{18}\)F-FDG) positron emission tomography (PET) inflammation monitoring in a rat model of experimental autoimmune myocarditis. Methods and results: Autoimmune myocarditis was induced in Lewis rats by immunizing with porcine cardiac myosin emulsified in complete Freund’s adjuvant. Time course of disease was assessed by longitudinal \(^{18}\)F-FDG PET imaging. A correlative analysis between in- and ex vivo \(^{18}\)F-FDG signalling and macrophage infiltration using CD68 staining was conducted. Finally, immunohistochemistry analysis of the cell-adhesion markers CD34 and CD44 was performed at different disease stages determined by longitudinal \(^{18}\)F-FDG PET imaging. After immunization, myocarditis rats revealed a temporal increase in 18F-FDG uptake (peaked at week 3), which was followed by a rapid decline thereafter. Localization of CD68 positive cells was well correlated with in vivo \(^{18}\)F-FDG PET signalling (R\(^2\) = 0.92) as well as with ex vivo 18F-FDG autoradiography (R\(^2\) = 0.9, P < 0.001, respectively). CD44 positivity was primarily observed at tissue samples obtained at acute phase (i.e. at peak 18F-FDG uptake), while CD34-positive staining areas were predominantly identified in samples harvested at both sub-acute and chronic phases (i.e. at \(^{18}\)F-FDG decrease). Conclusion: \(^{18}\)F-FDG PET imaging can provide non-invasive serial monitoring of cardiac inflammation in a rat model of acute myocarditis. KW - positron emission tomography KW - Myokarditis KW - myocarditis KW - inflammation KW - 18F-FDG KW - PET KW - personalized treatment Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-165601 SN - 2047-2404 ER -