Comparison of two preclinical myocardial infarct models: coronary coil deployment versus surgical ligation

Carolina Gálvez-Montón, Cristina Prat-Vidal, Idoia Díaz-Güemes, Verónica Crisóstomo, Carolina Soler-Botija, Santiago Roura, Aida Llucià-Valldeperas, Isaac Perea-Gil, Francisco M Sánchez-Margallo, Antoni Bayes-Genis

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Abstract

BACKGROUND: Despite recent advances, myocardial infarction (MI) remains the leading cause of death worldwide. Pre-clinical animal models that closely mimic human MI are pivotal for a quick translation of research and swine have similarities in anatomy and physiology. Here, we compared coronary surgical ligation versus coil embolization MI models in swine.

METHODS: Fifteen animals were randomly distributed to undergo surgical ligation (n=7) or coil embolization (n=8). We evaluated infarct size, scar fibrosis, inflammation, myocardial vascularization, and cardiac function by magnetic resonance imaging (MRI).

RESULTS: Thirty-five days after MI, there were no differences between the models in infarct size (P=0.53), left ventricular (LV) ejection fraction (P=0.19), LV end systolic volume (P=0.22), LV end diastolic volume (P=0.84), and cardiac output (P=0.89). Histologically, cardiac scars did not differ and the collagen content, collagen type I (I), collagen type III (III), and the I/III ratio were similar in both groups. Inflammation was assessed using specific anti-CD3 and anti-CD25 antibodies. There was similar activation of inflammation throughout the heart after coil embolization (P=0.78); while, there were more activated lymphocytes in the infarcted myocardium in the surgical occlusion model (P=0.02). Less myocardial vascularization in the infarction areas compared with the border and remote zones only in coil embolization animals was observed (P=0.004 and P=0.014, respectively).

CONCLUSIONS: Our results support that surgical occlusion and coil embolization MI models generate similar infarct size, cardiac function impairment, and myocardial fibrosis; although, inflammation and myocardial vascularization levels were closer to those found in humans when coil embolization was performed.

Original languageEnglish
Pages (from-to)137
JournalJournal of Translational Medicine
Volume12
DOIs
Publication statusPublished - 21 May 2014

Cite this

Gálvez-Montón, C., Prat-Vidal, C., Díaz-Güemes, I., Crisóstomo, V., Soler-Botija, C., Roura, S., ... Bayes-Genis, A. (2014). Comparison of two preclinical myocardial infarct models: coronary coil deployment versus surgical ligation. Journal of Translational Medicine, 12, 137. https://doi.org/10.1186/1479-5876-12-137