alexa Effects of therapeutic angiogenesis with plasmid VEGF165 on ventricular function in a canine model of chronic myocardial infarction.
Diabetes & Endocrinology

Diabetes & Endocrinology

Journal of Diabetes & Metabolism

Author(s): Furlani AP, Kalil RA, Castro I, CaedoDelgado A, Barra M,

Abstract Share this page

Abstract OBJECTIVE: Therapeutic angiogenesis is currently under investigation in ischemic heart disease. We examined the effect on left ventricular function induced by therapeutic angiogenesis by intramyocardial injection of plasmid VEGF(165), in a canine model of chronic myocardial infarction. METHODS: Left thoracotomy was performed in 10 mongrel dogs, and myocardial infarction induced by ligation of the major diagonal coronary artery. At 7 postoperative (p.o.) day (pre-treatment), left ventricular ejection fraction was assessed by echocardiogram, and a second procedure was done: saline or plasmid VEGF(165) at 200 mg/mL was injected over 10 points of the ischemic areas of control or treated groups, respectively. Fourteen days later (post-treatment, day 21) a control echocardiogram was performed, the animals were sacrificed and histological examination was performed. RESULTS: Ejection fraction was maintained in the treated group: 52.45 +/- 15.1\% on day 7 and 48.53 +/-11.74\% on day 21 (P=0.59), and tended to decrease in the control group, from 59.3 +/- 4\% to 39.37 +/- 19.43\% (P=0.04), although absolute values did not differ significantly between groups. Histological examination revealed a non significant increase in capillary vessels number in all areas in treated group. Paradoxically, arterioles were significantly less in number in all areas of treated dogs. CONCLUSION: Intramyocardial injection of plasmid VEGF(165), in this canine model of chronic myocardial infarction, resulted in preservation of left ventricular ejection fraction, contrary to the control group where left ventricular ejection fraction showed continuous decline during the experiment. Histological examination, however, was unable to explain completely these results.
This article was published in Rev Bras Cir Cardiovasc and referenced in Journal of Diabetes & Metabolism

Relevant Expert PPTs

Relevant Speaker PPTs

Relevant Topics

Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version