@article{RowinskaGorressenMerxetal.2014, author = {Rowinska, Zuzanna and Gorressen, Simone and Merx, Marc W. and Koeppel, Thomas A. and Liehn, Elisa A. and Zernecke, Alma}, title = {Establishment of a New Murine Elastase-Induced Aneurysm Model Combined with Transplantation}, series = {PLOS ONE}, volume = {9}, journal = {PLOS ONE}, number = {7}, issn = {1932-6203}, doi = {10.1371/journal.pone.0102648}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-115774}, pages = {e102648}, year = {2014}, abstract = {Introduction: The aim of our study was to develop a reproducible murine model of elastase-induced aneurysm formation combined with aortic transplantation. Methods: Adult male mice (n = 6-9 per group) underwent infrarenal, orthotopic transplantation of the aorta treated with elastase or left untreated. Subsequently, both groups of mice were monitored by ultrasound until 7 weeks after grafting. Results: Mice receiving an elastase-pretreated aorta developed aneurysms and exhibited a significantly increased diastolic vessel diameter compared to control grafted mice at 7 week after surgery (1.11 +/- 0.10 mm vs. 0.75 +/- 0.03 mm; p <= 0.001). Histopathological examination revealed disruption of medial elastin, an increase in collagen content and smooth muscle cells, and neointima formation in aneurysm grafts. Conclusions: We developed a reproducible murine model of elastase-induced aneurysm combined with aortic transplantation. This model may be suitable to investigate aneurysm-specific inflammatory processes and for use in gene-targeted animals.}, language = {en} }