Linked Life Data

16246413

Source:http://linkedlifedata.com/resource/pubmed/id/16246413

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
9
pubmed:dateCreated
2005-12-12
pubmed:abstractText
Crosslinked hyaluronan (HA) hydrogels preloaded with two cytokine growth factors, vascular endothelial growth factor (VEGF) and keratinocyte growth factor (KGF), were employed to elicit new microvessel growth in vivo. As a major glycosaminoglycan (GAG) component of extracellular matrix (ECM), HA is an excellent biopolymeric building block for new biomimetic, biocompatible therapeutic materials. HA hydrogel film samples were surgically implanted in the ear pinnae of mice, and the ears were harvested at 7 or 14 days post-implantation. Histologic analysis showed that each of the groups receiving an implant demonstrated significantly more microvessel density than control ears undergoing surgery but receiving no implant (p<0.001). Treatment groups receiving either co-delivery of both KGF and VEGF, an HA hydrogel lacking a growth factor or HA hydrogels containing a single cytokine were statistically unchanged with time, whereas treatment with KGF alone produced continuing increases in vascularization from day 7 to day 14. Strikingly, presentation of both VEGF and KGF in crosslinked HA generated intact microvessel beds with well-defined borders. In addition, an additive response to co-delivery of both cytokines in the HA hydrogel was observed. The HA hydrogels containing KGF+VEGF produced the greatest angiogenic response of any treatment group tested (NI=5.4 at day 14, where NI is a neovascularization index). This was 33% greater vessel density than in the next largest treatment group, that received HA+KGF (NI=4.0, p<0.002). New therapeutic approaches for numerous pathologies could be notably enhanced by the localized, sustained angiogenic response produced by release of both VEGF and KGF from crosslinked HA films.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0142-9612
pubmed:author
pubmed:issnType
Print
pubmed:volume
27
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1868-75
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
2006
pubmed:articleTitle
Dual growth factor-induced angiogenesis in vivo using hyaluronan hydrogel implants.
pubmed:affiliation
Department of Chemical Engineering, Oregon State University, 103 Gleeson Hall, Corvallis, OR 97331, USA. peattie@engr.orst.edu
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't, Research Support, N.I.H., Extramural