A method for generating obstructive thrombi in the coronary arteries of the conscious dog
| Autor: | Adrian Kantrowitz, Merlin E. Ekstrom, Ikuo Hayashi, Paul S. Freed, Hiroshi Yoshizu, Apul Stein, Tarik Wasfie, Jerzy Polanski |
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| Rok vydání: | 1983 |
| Předmět: |
Male
medicine.medical_specialty Time Factors Physiology medicine.medical_treatment Infarction Autopsy Coronary Disease Dogs Electricity Physiology (medical) Internal medicine Methods Medicine Animals cardiovascular diseases Thoracotomy Thrombus Creatine Kinase business.industry medicine.disease Coronary Vessels Electrodes Implanted Coronary arteries Isoenzymes medicine.anatomical_structure Tissue sections cardiovascular system Cardiology Cardiology and Cardiovascular Medicine business Perfusion Artery |
| Zdroj: | Cardiovascular research. 17(5) |
| ISSN: | 0008-6363 |
| Popis: | A technique for staging the generation of obstructive thrombi in the coronary arteries of conscious dogs is described. At thoracotomy, electrodes are placed in the lumina of coronary artery branches. When thrombus generation in proximity to the intraluminal electrode tip is desired, anodal current is applied to the exteriorised end of the electrode. In each of nine anaesthetised adult mongrel dogs two to seven intracoronary electrodes were implanted for a total of 35. One to 75 days later, 50 to 800 microA anodal current was applied to 16 electrodes for 30 min to 48 h. Upon autopsy, thrombi in various stages of organisation were found in proximity to the intracoronary portion of 15 electrodes. Six electrodes were found to be damaged or broken. In contrast, only four of the 13 control electrodes were sites of thrombus formation. In seven dogs tissue sections indicated either myocardial ischaemia or infarct in regions whose perfusion was blocked by thrombi. This method may provide for discretionary generation of intracoronary thrombi in the desired quantity, at the preferred site(s), at selected times of onset. Consequently, it offers the possibility of adjusting the onset, severity, and time course of myocardial ischaemia. |
| Databáze: | OpenAIRE |
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