[en] Polylactide-co-glycolide (PLGA) foams of tubular shape were assessed for their use as soft-tissue engineering scaffolds in vitro and in vivo. Porous membranes were fabricated by a thermally induced phase separation process of PLGA solutions in dimethylcarbonate. The parameters investigated were the PLGA concentration and the casting volume of solution. Membranes produced from 5 wt/v % polymer solutions and a 6 ml casting volume of polymer solution were selected for fabricating tubes of 3 mm diameter, 20 mm length and a nominal wall thickness of 1.5 mm. Scanning electron microscopy revealed that the structure of the tubularfoams consisted of radially oriented and highly interconnected pores with a large size distribution (50-300 µm). Selected tubes were implanted subcutaneously into adult male Lewis rats. Although the lumen of the tubes collapsed within one week of implantation, histological examination of the implanted scaffolds revealed that the foam tubes were well tolerated. Cellular infiltration into the foams, consisting mainly of fibrovascular tissue, was evident after two weeks and complete within eight weeks of implantation. The polymer was still evident in the scaffolds after eight weeks of implantation. The results from this study demonstrate that the PLGA tubular foams may be useful as soft-tissue engineering scaffolds with modification holding promise for the regeneration of tissues requiring a tubular shape scaffold such as intestine.
Research Center/Unit :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Materials science & engineering Chemistry
Author, co-author :
Day, Richard M; St. Mark’s Hospital and Acacdemic Institute, Harrow, UK
Boccaccini, Aldo R.; Imperial College, London, UK > Department of Materials and Centre for Tissue Engineering and Regenerative Medicine
Maquet, Véronique; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Shurey, Sandra; St. Mark’s Hospital and Acacdemic Institute, Harrow, UK
Forbes, Alastair; St. Mark’s Hospital and Acacdemic Institute (Harrow) and Imperial college, (London), UK > Division of Surgery, Anaesthetics and Intensive Care (London)
Gabe, Simon M; St. Mark’s Hospital and Acacdemic Institute (Harrow) and Imperial college, (London), UK > Division of Surgery, Anaesthetics and Intensive Care (London)
Jérôme, Robert ; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Language :
English
Title :
In vivo characterisation of a novel bioresorbable poly(lactide-co-glycolide) tubular foam scaffold for tissue engineering applications
Publication date :
June 2004
Journal title :
Journal of Materials Science: Materials in Medicine
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE] The Medical Research Council for a Discipline Hopper Award
Commentary :
The authors acknowledge Journal of Materials Science: Materials in Medicine (Springer) for allowing them to archive this paper. The original publication is available at http://www.springerlink.com/content/u502126511166l25/fulltext.pdf
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