| Development of biologic coronary artery bypass grafting in a rabbit model: revival of a classic concept with modern biotechnology. | |
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MedLine Citation:
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PMID: 15173714 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: We have developed a technique for biologic coronary artery bypass grafting, which is a revival of a classic concept with modern biotechnology. METHODS: Acute myocardial infarction was created by ligating the major branch of the circumflex artery in rabbits. Animals were divided into four groups: a nontreated group (group N), a group in which omentum was used to wrap the infarcted area (group G), a group in which a gelatin hydrogel sheet incorporating 100 microg basic fibroblast growth factor was placed over the infarcted area (group F), and a group in which the infarcted area was similarly treated with basic fibroblast growth factor followed by omental wrapping (group FG). Cardiac function was subsequently assessed by echocardiography. Postmortem angiography through the gastroepiploic artery was done in groups G and FG. Infarct size and arteriolar density were evaluated. RESULTS: Group FG showed a better fractional area change than did the other groups (group N P <.001, group G P =.002, group F P <.001). Angiography revealed that communication from the gastroepiploic artery to the coronary artery was created through a rich bed of neovascularization in all 7 animals of group FG, whereas poor collaterals were recognized in only 2 of 7 animals in group G. Infarct size was reduced to a greater extent in group FG than in groups F, G, and N (10% +/- 3%, 16% +/- 5%, 19% +/- 7%, 23% +/- 2%, respectively, group F P =.04, groups G and N P <.01). The number of arterioles 20 to 100 microm in diameter was increased to a greater extent in group FG than in groups F, G, and N (23 +/- 5 arterioles/mm(2), 14 +/- 3 arterioles/mm(2), 10 +/- 1 arterioles/mm(2), 4 +/- 2 arterioles/mm(2), respectively), with the differences being significant. CONCLUSIONS: These results show that bypass from the gastroepiploic artery to coronary arteries can be achieved without surgical anastomosis through slow release of basic fibroblast growth factor in this rabbit acute myocardial infarction model. This new revascularization concept, biologic coronary artery bypass grafting, could be applicable for revascularizing many tiny coronary vessels in patients who are difficult to treat with conventional surgery or catheter intervention. |
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Authors:
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Koji Ueyama; Gao Bing; Yasuhiko Tabata; Makoto Ozeki; Kazuhiko Doi; Kazunobu Nishimura; Hisayoshi Suma; Masashi Komeda |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: The Journal of thoracic and cardiovascular surgery Volume: 127 ISSN: 0022-5223 ISO Abbreviation: J. Thorac. Cardiovasc. Surg. Publication Date: 2004 Jun |
Date Detail:
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Created Date: 2004-06-02 Completed Date: 2004-07-13 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0376343 Medline TA: J Thorac Cardiovasc Surg Country: United States |
Other Details:
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Languages: eng Pagination: 1608-15 Citation Subset: AIM; IM |
Affiliation:
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Department of Cardiovascular Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Analysis of Variance Anastomosis, Surgical Animals Biocompatible Materials / pharmacology* Biotechnology* Coronary Angiography Coronary Artery Bypass / methods* Disease Models, Animal Echocardiography, Doppler Female Fibroblast Growth Factor 2 / pharmacology* Gels / pharmacology Graft Rejection Graft Survival Male Myocardial Infarction / mortality, surgery*, ultrasonography Probability Rabbits Random Allocation Sensitivity and Specificity |
| Chemical | |
Reg. No./Substance:
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0/Biocompatible Materials; 0/Gels; 103107-01-3/Fibroblast Growth Factor 2 |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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