| Autor: |
Mariann Gyöngyösi, Noemi Pavo, Dominika Lukovic, Katrin Zlabinger, Andreas Spannbauer, Denise Traxler, Georg Goliasch, Ljubica Mandic, Jutta Bergler-Klein, Alfred Gugerell, Andras Jakab, Zsuzsanna Szankai, Levente Toth, Rita Garamvölgyi, Gerald Maurer, Frederic Jaisser, Faiez Zannad, Thomas Thum, Sándor Bátkai, Johannes Winkler |
| Jazyk: |
angličtina |
| Rok vydání: |
2017 |
| Předmět: |
|
| Zdroj: |
Journal of Translational Medicine, Vol 15, Iss 1, Pp 1-15 (2017) |
| Druh dokumentu: |
article |
| ISSN: |
1479-5876 |
| DOI: |
10.1186/s12967-017-1299-0 |
| Popis: |
Abstract Background Meaningful translational large animal models for cardiac diseases are indispensable for studying disease mechanisms, development of novel therapeutic strategies, and evaluation of potential drugs. Methods For induction of heart failure, cardiac hypertrophy and fibrosis, a bare metal stent was implanted in the descending aorta of growing pigs (n = 7), inducing pressure stress on the left ventricle (group HYPI). The constant stent size in growing pigs resulted in antegrade partial obstruction of the aortic flow with a gradual increase in afterload. Five pigs with sham intervention served as control. Serial haemodynamic, pressure–volume loop measurements and transthoracic echocardiography (TTE) were performed to detect developing pressure overload of the LV and cardiac MRI with late enhancement for measuring LV and RV mass and ejection fraction. Results At 5-month follow-up, CT and contrast aortography, and intraluminal echocardiography confirmed aortic isthmus stenosis with a mean trans-stenotic gradient of 64 ± 13.9 mmHg. Invasive haemodynamic measurements revealed a secondary increase in pulmonary artery pressure (44.6 ± 5.1 vs 25.9 ± 6.2 mmHg, HYPI vs control, p |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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