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Pulsed Acoustic Cellular Expression (PACE) Reduces Capsule Formation Around Silicone Implants

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Abstract

Capsular contracture remains a major complication after reconstructive or aesthetic breast augmentation. Formation of capsular fibrosis is a multifactorial process. An initial inflammatory reaction appears to be key to the development of capsular contracture. Recent studies have shown that pulsed acoustic cellular expression (PACE) has significant antiinflammatory effects. Thus, this study aimed to determine the potential of PACE to prevent or attenuate capsular contracture around silicone implants in a rodent model. For this study, 36 Lewis rats were divided into two groups, and a textured silicone implant was placed in a dorsal submuscular pocket. One group received PACE treatment, whereas the other group served as the control group and received no treatment. Follow-up evaluations were performed after 10, 35, and 100 days. Capsule thickness, collagen density, myofibroblasts, vascular density, and a semiquantitative real-time polymerase chain reaction that addressed differential gene expression were assessed. The PACE treatment significantly reduced capsule thickness on days 10, 35, and 100 compared with the control group (day 10: 632.9 ± 164.5 vs 932.6 ± 160.8, p < 0.05; day 35: 709.5 ± 175 vs 825.9 ± 313.3, p < 0.0.5; day 100: 736.3 ± 198.1 vs 1,062.3 ± 151.9, p < 0.05). This was accompanied by a significant suppression of proinflammatory genes (cluster of differentiation 68, monocyte chemotactic protein-1, CCL4) and synergistic alterations of pro- and antifibrotic proteins (transforming growth factor-beta 1, matrix metalloproteinase-2). This study showed that the PACE application significantly reduces capsular contracture around silicone implants. A decrease in capsular thickness after PACE treatment seems to be associated with a downregulation of proinflammatory genes and proteins. The study identifies PACE technology as a potential low-cost technique that is easy to use for reduction of capsular contracture after augmentation using silicone implants.

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Acknowledgments

The dermaPACE device was kindly provided by Sanuwave, Inc. (Alpharetta, GA, USA). The silicone implants were kindly provided by Pascal Hüser from Polytech Health and Aesthetic (Dieburg, Germany).

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Authors and Affiliations

  1. ETHIANUM - Clinic for Plastic and Reconstructive Surgery, Aesthetic and Preventive Medicine at Heidelberg University Hospital, Voßstrasse 6, 69115, Heidelberg, Germany

    Matthias A. Reichenberger, Sina Heimer, Günter Germann & Eva Köllensperger

  2. Department of Neuropathology, University Hospital Leipzig, University of Leipzig, Leipzig, Germany

    Wolf Mueller

  3. Clinical Cooperation Unit Neuropathology, German Cancer Research Center, Heidelberg, Germany

    Ulrike Lass

  4. Department of Plastic and Reconstructive Surgery, Burn Centre, BG University Hospital Bergmannsheil, Ruhr University Bochum, Bochum, Germany

    Tobias Hirsch

  5. Clinic for Hand, Plastic and Reconstructive Surgery, Burn Centre, BG Trauma Centre Ludwigshafen, Hand and Plastic Surgery of the University of Heidelberg, Heidelberg, Germany

    Sebastian Fischer

Authors
  1. Matthias A. Reichenberger
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  2. Sina Heimer
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  3. Ulrike Lass
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  4. Günter Germann
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  5. Eva Köllensperger
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  6. Wolf Mueller
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  7. Tobias Hirsch
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  8. Sebastian Fischer
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Correspondence to Matthias A. Reichenberger.

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Reichenberger, M.A., Heimer, S., Lass, U. et al. Pulsed Acoustic Cellular Expression (PACE) Reduces Capsule Formation Around Silicone Implants. Aesth Plast Surg 38, 244–251 (2014). https://doi.org/10.1007/s00266-013-0235-9

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  • DOI: https://doi.org/10.1007/s00266-013-0235-9

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