Elastin-derived scaffolding associated or not with bone morphogenetic protein (BMP) or hydroxyapatite (HA) in the repair process of metaphyseal bone defects.

Bibliographic Details
Title:	Elastin-derived scaffolding associated or not with bone morphogenetic protein (BMP) or hydroxyapatite (HA) in the repair process of metaphyseal bone defects.
Authors:	Marcelo de Azevedo E Sousa Munhoz, Karina Torres Pomini, Ana Maria de Guzzi Plepis, Virginia da Conceição Amaro Martins, Eduardo Gomes Machado, Renato de Moraes, Fernando Bento Cunha, Arnaldo Rodrigues Santos Junior, Guinea Brasil Camargo Cardoso, Marco Antonio Hungaro Duarte, Murilo Priori Alcalde, Daniela Vieira Buchaim, Rogerio Leone Buchaim, Marcelo Rodrigues da Cunha
Source:	PLoS ONE, Vol 15, Iss 4, p e0231112 (2020)
Publisher Information:	Public Library of Science (PLoS), 2020.
Publication Year:	2020
Collection:	LCC:Medicine LCC:Science
Subject Terms:	Medicine, Science
More Details:	Tissue engineering represents a promising alternative for reconstructive surgical procedures especially for the repair of bone defects that do not regenerate spontaneously. The present study aimed to evaluate the effects of the elastin matrix (E24/50 and E96/37) incorporated with hydroxyapatite (HA) or morphogenetic protein (BMP) on the bone repair process in the distal metaphysis of rat femur. The groups were: control group (CG), hydrolyzed elastin matrix at 50°C/24h (E24/50), E24/50 + HA (E24/50/HA), E24/50 + BMP (E24/50/BMP), hydrolyzed elastin matrix at 37°C/96h (E96/37), E96/37 + HA (E96/37/HA), E96/37 + BMP (E96/37/BMP). Macroscopic and radiographic analyses showed longitudinal integrity of the femur in all groups without fractures or bone deformities. Microtomographically, all groups demonstrated partial closure by mineralized tissue except for the E96/37/HA group with hyperdense thin bridge formation interconnecting the edges of the ruptured cortical. Histologically, there was no complete cortical recovery in any group, but partial closure with trabecular bone. In defects filled with biomaterials, no chronic inflammatory response or foreign body type was observed. The mean volume of new bone formed was statistically significant higher in the E96/37/HA and E24/50 groups (71.28 ± 4.26 and 66.40 ± 3.69, respectively) than all the others. In the confocal analysis, it was observed that all groups presented new bone markings formed during the experimental period, being less evident in the CG group. Von Kossa staining revealed intense calcium deposits distributed in all groups. Qualitative analysis of collagen fibers under polarized light showed a predominance of red-orange birefringence in the newly regenerated bone with no difference between groups. It was concluded that the E24/50 and E96/37/HA groups promoted, with greater speed, the bone repair process in the distal metaphysis of rat femur.
Document Type:	article
File Description:	electronic resource
Language:	English
ISSN:	1932-6203
Relation:	https://doaj.org/toc/1932-6203
DOI:	10.1371/journal.pone.0231112
Access URL:	https://doaj.org/article/454b52c4b059466e82f9232288731dc8
Accession Number:	edsdoj.454b52c4b059466e82f9232288731dc8
Database:	Directory of Open Access Journals
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More Details
ISSN:	19326203
DOI:	10.1371/journal.pone.0231112
Published in:	PLoS ONE
Language:	English