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The Journal of Tehran University Heart Center، جلد ۱، شماره ۲، صفحات ۸۹-۹۳
عنوان فارسی
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عنوان انگلیسی Induced Myocardial Infarction Using Ligation of the Left Anterior Descending Coronary Artery Major Diagonal Branch: Development of an Ovine Model
چکیده انگلیسی مقاله Background : We report experimental myocardial infarction by occluding coronary arteries in ovine models. Methods: Twelve ewes were included in the study. After the chest was opened by left lateral thoracotomy incision, the second diagonal branch of the left anterior descending coronary artery was ligated at a point approximately 40% distant from its base. Prophylactic antiarrhythmics were administered. Animals were mechanically ventilated during surgery and stayed in the ICU for 24h afterwards. Experiments were then evaluated by echocardiographic, electrocardiographic, hemodynamic, serologic and morphologic investigations. Echocardiographic measurements were repeated after two months and animals were then sacrificed for postmortem cardiac examinations. Results: All animals survived the surgical procedure. Cyanotic discoloration and hypokinesia in the cardiac tissue in an area of 3×4 cm plus ST-segment elevations was detected immediately after vessel ligation. More over, there were pathologic Q- waves 2 months later. Echocardiographic evaluations revealed an average of 22% relative decrease in cardiac ejection fraction. Wall motion analysis demonstrated anteroapical hypokinesia and akinesia in all animals one day and two months after operation. Thin walled infarcted areas with tissue fibrosis were evident in pathologic investigations two months after surgery. Conclusion: In conclusion, we developed a practical and safe method of producing myocardial infarction in large animal models.
کلیدواژه‌های انگلیسی مقاله Myocardial infarction , Animal models , Sheep, LAD
نویسندگان مقاله شهرام ربانی | shahram rabbani
tehran heart center, tehran university of medical sciences, tehran, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (Tehran university of medical sciences)

حسین احمدی | hossein ahmadi
tehran heart center, tehran university of medical sciences, tehran, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (Tehran university of medical sciences)

احسان fayazzadeh | ehsan fayazzadeh
tehran heart center, tehran university of medical sciences, tehran, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (Tehran university of medical sciences)

محمد صاحب جم | mohammad sahebjam
tehran heart center, tehran university of medical sciences, tehran, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (Tehran university of medical sciences)

محمد علی برومند | mohammad ali boroumand
tehran heart center, tehran university of medical sciences, tehran, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (Tehran university of medical sciences)

مریم ستوده | maryam sotudeh
tehran heart center, tehran university of medical sciences, tehran, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (Tehran university of medical sciences)

مهدی نصیری | mehdi nasiri
tehran heart center, tehran university of medical sciences, tehran, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (Tehran university of medical sciences)

نشانی اینترنتی http://jthc.tums.ac.ir/index.php/jthc/article/view/16
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زبان مقاله منتشر شده en
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