K T Tan1, D Wijeratne, B Shih, A D Baildam, A Bayat. 1. Plastic and Reconstructive Surgery Research, School of Translational Medicine, Manchester Interdisciplinary Biocentre, University of Manchester, Manchester, UK.
Abstract
BACKGROUND: The pathogenesis of periprosthetic capsular contracture following breast implant surgery is unclear. The aim of this study was to identify the expression of tumour necrosis factor-α (TNF-α), collagen type III α(1) (COL3A1), transforming growth factor-β(1) (TGF-β(1)) and connective tissue growth factor (CTGF) in different Baker grades of breast capsular contracture. METHODS: Seven periprosthetic breast capsule specimens were collected from 6 patients. TNF-α, COL3A1, TGF-β(1) and CTGF gene expression were analysed using real-time quantitative polymerase chain reaction. Immunohistolocalisation of TNF-α was performed on paraffin-embedded sections. Significant correlations were analysed using the Pearson correlation coefficient. RESULTS: TNF-α expression was associated with increased Baker grade of capsular contracture (Pearson correlation, r = 0.558; p = 0.02). COL3A1 gene expression was reduced with increasing severity of contracture (r = -0.490; p = 0.05). There were no significant correlations between TGF-β(1) and CTGF expression with Baker grade. Positive TNF-α staining in breast capsules was localised to fibroblasts, macrophages, and extracellularly close to the prosthesis. CONCLUSION: The increased expression of TNF-α may play a key role in the inflammatory response associated with capsular contracture. The corresponding decrease in COL3A1 may contribute to the change in capsular physical properties seen in capsular contracture.
BACKGROUND: The pathogenesis of periprosthetic capsular contracture following breast implant surgery is unclear. The aim of this study was to identify the expression of tumour necrosis factor-α (TNF-α), collagen type III α(1) (COL3A1), transforming growth factor-β(1) (TGF-β(1)) and connective tissue growth factor (CTGF) in different Baker grades of breast capsular contracture. METHODS: Seven periprosthetic breast capsule specimens were collected from 6 patients. TNF-α, COL3A1, TGF-β(1) and CTGF gene expression were analysed using real-time quantitative polymerase chain reaction. Immunohistolocalisation of TNF-α was performed on paraffin-embedded sections. Significant correlations were analysed using the Pearson correlation coefficient. RESULTS: TNF-α expression was associated with increased Baker grade of capsular contracture (Pearson correlation, r = 0.558; p = 0.02). COL3A1 gene expression was reduced with increasing severity of contracture (r = -0.490; p = 0.05). There were no significant correlations between TGF-β(1) and CTGF expression with Baker grade. Positive TNF-α staining in breast capsules was localised to fibroblasts, macrophages, and extracellularly close to the prosthesis. CONCLUSION: The increased expression of TNF-α may play a key role in the inflammatory response associated with capsular contracture. The corresponding decrease in COL3A1 may contribute to the change in capsular physical properties seen in capsular contracture.
Authors: Mimi R Borrelli; Dre Irizzary; Ronak A Patel; Dung Nguyen; Arash Momeni; Michael T Longaker; Derrick C Wan Journal: Aesthet Surg J Date: 2020-03-23 Impact factor: 4.283
Authors: Yara Bachour; Linda Poort; Stephan P Verweij; Gijs van Selms; Hay A H Winters; Marco J P F Ritt; Frank B Niessen; Andries E Budding Journal: Aesthetic Plast Surg Date: 2019-05-02 Impact factor: 2.326
Authors: Julia Tolksdorf; Raymund E Horch; Jasmin S Grüner; Rafael Schmid; Annika Kengelbach-Weigand; Dirk W Schubert; Siegfried Werner; Dominik Schneidereit; Oliver Friedrich; Ingo Ludolph Journal: J Mater Sci Mater Med Date: 2020-02-03 Impact factor: 3.896