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- Title
Study of the Effect of Different Breast Implant Surfaces on Capsule Formation and Host Inflammatory Response in an Animal Model.
- Authors
Pompeo, Fabio Santanelli di; Sorotos, Michail; Canese, Rossella; Valeri, Mauro; Roberto, Cirombella; Giorgia, Scafetta; Firmani, Guido; Napoli, Arianna di; di Pompeo, Fabio Santanelli; Cirombella, Roberto; Scafetta, Giorgia; di Napoli, Arianna
- Abstract
<bold>Background: </bold>Breast implants are biomaterials eliciting a physiological and mandatory foreign body response.<bold>Objectives: </bold>We designed an animal study to investigate the impact of different implant surfaces on the formation of the perirprosthetic capsule, the inflammatory response and the cellular composition.<bold>Methods: </bold>We implanted 1 scaled-down version of breast implants by different manufactures on 70 female Sprague Dawley rats. Animals were divided into five groups of 14 animals. Group A received a smooth implant (Ra≈0.5µm) according to the ISO 14607-2018 classification, Group B smooth implant (Ra≈3.2µm), Group C smooth implant (Ra≈5µm), Group D macrotextured implant (Ra≈62µm) and Group E macrotextured implant (Ra≈75µm). At 60 days, all animals received a magnetic resonance imaging (MRI) and 35 animals were sacrificed and their capsules sent for histology (capsule thickness, inflammatory infiltrate) and immunohistochemistry analysis (cellular characterization). The remaining animals repeated the MRI at 120 days and were sacrificed following the same protocol.<bold>Results: </bold>MRI showed a thinner capsule in the smooth implants (Group A, B, C) at 60 days (p < 0.001) but not at 120 days (p = 0.039), confirmed with histology both at 60 days (p = 0.005) and 120 days (p < 0.001). Smooth implants (Group A, B, C) presented a mild inflammatory response at 60 days that was maintained at 120 days and a high M2-Macrophage concentration (anti-inflammatory).<bold>Conclusions: </bold>Our study confirms that smooth implants form a thinner capsule, inferior inflammatory infiltrate and a cellular composition that indicates a mild host inflammatory response. A new host inflammatory response classification is elaborated classifying breast implants into mild, moderate, and high.
- Publication
Aesthetic Surgery Journal, 2023, Vol 43, Issue 4, p506
- ISSN
1090-820X
- Publication type
journal article
- DOI
10.1093/asj/sjac301