Comparison of two porcine-derived materials for repairing abdominal wall defects in rats

The purpose of this study was to compare the mechanical properties, host responses and incorporation of porcine small intestine submucosa (PSIS) and porcine acellular dermal matrix (PADM) in a rat model of abdominal wall defect repair. Prior to implantation, PSIS and PADM were prepared and evaluated...

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Veröffentlicht in:PloS one 2011-05, Vol.6 (5), p.e20520-e20520
Hauptverfasser: Liu, Zhengni, Tang, Rui, Zhou, Zhiyuan, Song, Zhicheng, Wang, Huichun, Gu, Yan
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Tang, Rui
Zhou, Zhiyuan
Song, Zhicheng
Wang, Huichun
Gu, Yan
description The purpose of this study was to compare the mechanical properties, host responses and incorporation of porcine small intestine submucosa (PSIS) and porcine acellular dermal matrix (PADM) in a rat model of abdominal wall defect repair. Prior to implantation, PSIS and PADM were prepared and evaluated in terms of structure and mechanical properties. Full-thickness abdominal wall defects were created in 50 Sprague-Dawley rats, and were repaired using either PSIS or PADM. Rats were sacrificed 1, 2, 4, 8 and 12 weeks post-repair and examined for herniation, infection, adhesions, contraction, and changes in the thickness and strength of the tissues incorporated at the defect sites. Histopathology and immunohistochemistry were performed to analyze inflammatory responses, collagen deposition and vascularization. PADM showed more dense collagen deposition and stronger mechanical properties than PSIS prior to implantation (P
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However, PADM tissue induced less adhesion and increased in thickness more slowly, and showed less infiltration by foreign giant cells, polymorphonuclear cells, and mononuclear cells. Improved remodeling of host tissue was observed after PSIS implantation, which was apparent from the orientation of bands of fibrous connective tissue, intermixed with newly formed blood vessels by Week 12. PSIS showed weaker mechanical properties prior to implantation. However, after implantation PSIS induced more pronounced host responses and showed better incorporation into host tissues than PADM.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>21637777</pmid><doi>10.1371/journal.pone.0020520</doi><tpages>e20520</tpages><oa>free_for_read</oa></addata></record>
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subjects Abdomen
Abdominal wall
Abdominal Wall - pathology
Animal tissues
Animals
Biocompatible Materials - pharmacology
Biology
Blood vessels
Collagen
Connective tissues
Contraction
Defects
Deposition
Dermis - metabolism
Extracellular matrix
Extracellular Matrix - drug effects
Extracellular Matrix - ultrastructure
Giant cells
Health aspects
Hernias
Histopathology
Immunohistochemistry
Implantation
Infiltration
Inflammation
Intestinal Mucosa - drug effects
Intestinal Mucosa - ultrastructure
Intestine, Small - metabolism
Laboratory animals
Leukocytes (mononuclear)
Leukocytes (polymorphonuclear)
Male
Materials Science
Materials Testing
Mechanical Phenomena - drug effects
Mechanical properties
Medicine
Morphology
Physics
Plastic surgery
Prostheses
Prosthesis Implantation
Rats
Rats, Sprague-Dawley
Repair
Rodents
Skin
Small intestine
Surface Properties - drug effects
Sus scrofa
Test methods
Textiles
Tissue Adhesions - pathology
Tissue Scaffolds - chemistry
Transplants & implants
Vascularization
Wound Healing - drug effects
title Comparison of two porcine-derived materials for repairing abdominal wall defects in rats
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