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A targeted high-efficiency angiogenesis strategy as therapy for myocardial infarction.
MedLine Citation:
PMID:  22469972     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
AIMS: The aim of this study was to prove that an intramyocardial injection of a mixture of low-dose human growth factor (HGF) plasmid and microbubbles (MB) in combination with insonation was an effective therapy for myocardial infarction. MAIN METHODS: Twenty dogs with myocardial infarction were divided into 4 groups: (1) HGF, MB and ultrasound (HGF+MB/US), (2) HGF and US (HGF+US), (3) HGF alone and (4) surgery alone (control). In the HGF+MB/US group, HGF plasmid DNA (500μg) mixed with 0.5ml of MB solution was injected 5min after coronary occlusion followed by insonation. With the exception of the control group, the other dogs were divided into two groups, one treated with the HGF gene and insonation and the other with the HGF gene only. KEY FINDINGS: Compared to the HGF group, infarct size decreased from 32%±7% (control) to 23%±5% in the HGF+MB/US group 28d later (P<0.05). Capillary density increased from 21.7±4.2/mm(2) (control) to 114.3±28.9/mm(2) in the HGF+MB/US group (P<0.01). Compared to the HGF group, there was a 14% decrease in the ratio of left ventricle weight/body weight and a 25% decrease in hydroxyproline content. We also observed a 29% and 20% decrease in collagen volume fraction of type I and type III collagen, respectively in the HGF-US/MB group. SIGNIFICANCE: Intramyocardial injection of HGF and MB in combination with insonation enhances neovascularization and reduces ventricular remodeling and infarct size.
Authors:
Qiao-Ying Yuan; Jing Huang; Bao-Cheng Chu; Xue-Jun Li; Xing-Sheng Li; Liang-Yi Si
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-3-24
Journal Detail:
Title:  Life sciences     Volume:  -     ISSN:  1879-0631     ISO Abbreviation:  -     Publication Date:  2012 Mar 
Date Detail:
Created Date:  2012-4-3     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0375521     Medline TA:  Life Sci     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012. Published by Elsevier Inc.
Affiliation:
Department of Geriatrics, Southwest Hospital, the Third Military Medical University, Chongqing 400038, PR China.
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