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Melgarejo-Ramírez Y, Sánchez-Sánchez R, García-López J, Brena-Molina AM, Gutiérrez-Gómez C, Ibarra C, Velasquillo C. Characterization of pediatric microtia cartilage: a reservoir of chondrocytes for auricular reconstruction using tissue engineering strategies. Cell Tissue Bank 2016; 17:481-9. [PMID: 27566509 DOI: 10.1007/s10561-016-9574-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 08/01/2016] [Indexed: 10/21/2022]
Abstract
The external ear is composed of elastic cartilage. Microtia is a congenital malformation of the external ear that involves a small reduction in size or a complete absence. The aim of tissue engineering is to regenerate tissues and organs clinically implantable based on the utilization of cells and biomaterials. Remnants from microtia represent a source of cells for auricular reconstruction using tissue engineering. To examine the macromolecular architecture of microtia cartilage and behavior of chondrocytes, in order to enrich the knowledge of this type of cartilage as a cell reservoir. Auricular cartilage remnants were obtained from pediatric patients with microtia undergoing reconstructive procedures. Extracellular matrix composition was characterized using immunofluorescence and histological staining methods. Chondrocytes were isolated and expanded in vitro using a mechanical-enzymatic protocol. Chondrocyte phenotype was analyzed using qualitative PCR. Microtia cartilage preserves structural organization similar to healthy elastic cartilage. Extracellular matrix is composed of typical cartilage proteins such as type II collagen, elastin and proteoglycans. Chondrocytes displayed morphological features similar to chondrocytes derived from healthy cartilage, expressing SOX9, COL2 and ELN, thus preserving chondral phenotype. Cell viability was 94.6 % during in vitro expansion. Elastic cartilage from microtia has similar characteristics, both architectural and biochemical to healthy cartilage. We confirmed the suitability of microtia remnant as a reservoir of chondrocytes with potential to be expanded in vitro, maintaining phenotypical features and viability. Microtia remnants are an accessible source of autologous cells for auricular reconstruction using tissue engineering strategies.
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Affiliation(s)
- Y Melgarejo-Ramírez
- Laboratorio de Biotecnología, Centro Nacional de Investigación y Atención de Quemados (CENIAQ), Instituto Nacional de Rehabilitación, Calzada México-Xochimilco No. 289, Col. Arenal de Guadalupe, C.P. 14389, Mexico City, Mexico
| | - R Sánchez-Sánchez
- Laboratorio de Biotecnología, Centro Nacional de Investigación y Atención de Quemados (CENIAQ), Instituto Nacional de Rehabilitación, Calzada México-Xochimilco No. 289, Col. Arenal de Guadalupe, C.P. 14389, Mexico City, Mexico
| | - J García-López
- Unidad de Ingeniería de tejidos, terapia celular y medicina regenerativa, Instituto Nacional de Rehabilitación, Calzada México-Xochimilco No. 289, Col. Arenal de Guadalupe, C.P. 14389, Mexico City, D.F., Mexico
| | - A M Brena-Molina
- Laboratorio de Biotecnología, Centro Nacional de Investigación y Atención de Quemados (CENIAQ), Instituto Nacional de Rehabilitación, Calzada México-Xochimilco No. 289, Col. Arenal de Guadalupe, C.P. 14389, Mexico City, Mexico
| | - C Gutiérrez-Gómez
- División de cirugía plástica y reconstructiva, Hospital General Dr. Manuel Gea González, Calz. De Tlalpan No. 4800 Col. Sección XVI, C.P. 14080, Mexico City, Mexico
| | - C Ibarra
- Unidad de Ingeniería de tejidos, terapia celular y medicina regenerativa, Instituto Nacional de Rehabilitación, Calzada México-Xochimilco No. 289, Col. Arenal de Guadalupe, C.P. 14389, Mexico City, D.F., Mexico
| | - C Velasquillo
- Laboratorio de Biotecnología, Centro Nacional de Investigación y Atención de Quemados (CENIAQ), Instituto Nacional de Rehabilitación, Calzada México-Xochimilco No. 289, Col. Arenal de Guadalupe, C.P. 14389, Mexico City, Mexico.
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Pradel-Mora J, Gutiérrez-Gómez C, Arteaga-Martínez S, Soto-Paulino A, Perez-Dosal M, López-Mendoza F. Anatomía de la arteria temporal superficial: importancia quirúrgica: estudio piloto en cadáveres. Cir plást iberolatinoam 2015. [DOI: 10.4321/s0376-78922015000100007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Erazo-Cortés C, Gutiérrez-Gómez C, Mucharraz-Diaz M. Sutura metálica con aguja doble armada para reconstrucción auricular: experiencia en su fabricación y uso. Cir plást iberolatinoam 2013. [DOI: 10.4321/s0376-78922013000300012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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