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Pathological Changes of Adult Mitral Valves after Failed CorMatrix ECM Repair
BACKGROUND AND OBJECTIVES: CorMatrix acts as a tissue scaffold and is intended to promote the proliferation of small vessels and tissue remodeling to replicate normal tissue function. METHODS: At Temple University Hospital, Philadelphia, PA, USA from 2013 to 2016, CorMatrix material was utilized dur...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
2021
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8697744/ https://www.ncbi.nlm.nih.gov/pubmed/34957472 http://dx.doi.org/10.14218/jctp.2021.00009 |
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author | Chakraborty, Baidarbhi Wang, He |
author_facet | Chakraborty, Baidarbhi Wang, He |
author_sort | Chakraborty, Baidarbhi |
collection | PubMed |
description | BACKGROUND AND OBJECTIVES: CorMatrix acts as a tissue scaffold and is intended to promote the proliferation of small vessels and tissue remodeling to replicate normal tissue function. METHODS: At Temple University Hospital, Philadelphia, PA, USA from 2013 to 2016, CorMatrix material was utilized during mitral valve anterior leaflet augmentation repair in 25 adult patients, and four patients required repeat interventions at 4–12 months (8.25 ± 4.35 months) after the initial repair. This study evaluated the pathological changes in four patients. RESULTS: Histological examination of the CorMatrix showed matrix degradation in all cases. At 4 months after repair, mixed acute and chronic inflammatory cells that included eosinophils were visible within the matrix, which was more severe around the suture material. Later, the extent of inflammation abated and became more chronic with macrophage dominance. Some macrophages and multinucleated cells were visible deep in the matrix. The neovascularization was limited to the tissue–matrix boundary at early time points; the more mature vessels with dilated lumens extended deeper into the matrix as time increased, combined with some elongated fibroblast-like cells. In addition, marked acute and chronic inflammation with neutrophil and eosinophil infiltrate was identified in the surrounding native tissue at 4 months, especially around the suture material. Marked granulomatous inflammation was identified in all cases, with prominent multinucleated giant cells present at later time points (50%). Immunohistochemical staining for CD68 and CD163 showed prominent M2 macrophages in the CorMatrix and surrounding tissue. CONCLUSIONS: Our results demonstrated time-dependent changes in failed CorMatrix repaired valves after mitral valve repair, with macrophages and neovascularization in the matrix 12 months after the initial repair. |
format | Online Article Text |
id | pubmed-8697744 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
record_format | MEDLINE/PubMed |
spelling | pubmed-86977442021-12-23 Pathological Changes of Adult Mitral Valves after Failed CorMatrix ECM Repair Chakraborty, Baidarbhi Wang, He J Clin Transl Pathol Article BACKGROUND AND OBJECTIVES: CorMatrix acts as a tissue scaffold and is intended to promote the proliferation of small vessels and tissue remodeling to replicate normal tissue function. METHODS: At Temple University Hospital, Philadelphia, PA, USA from 2013 to 2016, CorMatrix material was utilized during mitral valve anterior leaflet augmentation repair in 25 adult patients, and four patients required repeat interventions at 4–12 months (8.25 ± 4.35 months) after the initial repair. This study evaluated the pathological changes in four patients. RESULTS: Histological examination of the CorMatrix showed matrix degradation in all cases. At 4 months after repair, mixed acute and chronic inflammatory cells that included eosinophils were visible within the matrix, which was more severe around the suture material. Later, the extent of inflammation abated and became more chronic with macrophage dominance. Some macrophages and multinucleated cells were visible deep in the matrix. The neovascularization was limited to the tissue–matrix boundary at early time points; the more mature vessels with dilated lumens extended deeper into the matrix as time increased, combined with some elongated fibroblast-like cells. In addition, marked acute and chronic inflammation with neutrophil and eosinophil infiltrate was identified in the surrounding native tissue at 4 months, especially around the suture material. Marked granulomatous inflammation was identified in all cases, with prominent multinucleated giant cells present at later time points (50%). Immunohistochemical staining for CD68 and CD163 showed prominent M2 macrophages in the CorMatrix and surrounding tissue. CONCLUSIONS: Our results demonstrated time-dependent changes in failed CorMatrix repaired valves after mitral valve repair, with macrophages and neovascularization in the matrix 12 months after the initial repair. 2021-08-24 2021 /pmc/articles/PMC8697744/ /pubmed/34957472 http://dx.doi.org/10.14218/jctp.2021.00009 Text en https://creativecommons.org/licenses/by-nc-nd/4.0/This article has been published under the terms of Creative Commons Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0), which permits noncommercial unrestricted use, distribution, and reproduction in any medium, provided that the following statement is provided (http://creativecommons.org/licenses/by-nc-nd/4.0/ (https://creativecommons.org/licenses/by-nc-nd/4.0/) ). |
spellingShingle | Article Chakraborty, Baidarbhi Wang, He Pathological Changes of Adult Mitral Valves after Failed CorMatrix ECM Repair |
title | Pathological Changes of Adult Mitral Valves after Failed CorMatrix ECM Repair |
title_full | Pathological Changes of Adult Mitral Valves after Failed CorMatrix ECM Repair |
title_fullStr | Pathological Changes of Adult Mitral Valves after Failed CorMatrix ECM Repair |
title_full_unstemmed | Pathological Changes of Adult Mitral Valves after Failed CorMatrix ECM Repair |
title_short | Pathological Changes of Adult Mitral Valves after Failed CorMatrix ECM Repair |
title_sort | pathological changes of adult mitral valves after failed cormatrix ecm repair |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8697744/ https://www.ncbi.nlm.nih.gov/pubmed/34957472 http://dx.doi.org/10.14218/jctp.2021.00009 |
work_keys_str_mv | AT chakrabortybaidarbhi pathologicalchangesofadultmitralvalvesafterfailedcormatrixecmrepair AT wanghe pathologicalchangesofadultmitralvalvesafterfailedcormatrixecmrepair |