An investigation to optimize angiogenesis within potential dermal replacements.

Abstract:

BACKGROUND:Acute and chronic wounds are costly and invariably expose significant structures. Surgical reconstruction causes donor-site morbidity, scarring, and the need for intensive care. Reconstruction using an artificial dermis avoids donor sites, but available collagen-based solutions are susceptible to poor take. Using an in vitro angiogenic assay, the authors investigated dermal matrices for potential inclusion in a second-generation proangiogenic synthetic dermal replacement. METHODS:Human placental endothelial cells were cocultured on Cytodex beads (Pharmacia Biotech) and plated in eight different extracellular matrix gels (collagen, fibrin, four glycosaminoglycans, vitronectin, and fibronectin), with or without stimulation from two soluble angiogenic factors. Three different cell lines were used, with 30 beads per condition. Cellular invasion into gels was calculated using Sigma Scan computer software, and statistical comparisons were made. RESULTS:The authors found that fibrin provided greatest stimulus for endothelial invasion, with invasion in fibrin inhibited by collagen in a concentration-dependent fashion. Invasion by alternative extracellular matrix components and soluble angiogenic factors was far less than that in fibrin. CONCLUSIONS:The authors identified that extracellular matrices can provide greater angiogenic potential than soluble angiogenic factors. Fibrin provided a better proangiogenic scaffold than collagen. This could well be used to encourage blood vessel ingress and eventual take of a second-generation proangiogenic synthetic dermal replacement.

journal_name

Plast Reconstr Surg

authors

Potter MJ,Linge C,Cussons P,Dye JF,Sanders R

doi

10.1097/01.prs.0000218843.86011.f8

subject

Has Abstract

pub_date

2006-05-01 00:00:00

pages

1876-85

issue

6

eissn

0032-1052

issn

1529-4242

pii

00006534-200605000-00028

journal_volume

117

pub_type

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