Negative Pressure From an Internal Spiral Tissue Expander Generates New Subcutaneous Adipose Tissue in an In Vivo Animal Model.
Aesthet Surg J
; 40(4): 448-459, 2020 03 23.
Article
em En
| MEDLINE
| ID: mdl-31504155
ABSTRACT
BACKGROUND:
Tissue expanders are widely utilized in plastic surgery. Traditional expanders usually are "inflatable balloons," which are planned to grow additional skin and/or to create space to be filled, for example, with an implant. In very recent years, reports suggest that negative pressure created by an external device (ie, Brava) induces both skin expansion and adipogenesis.OBJECTIVES:
The authors evaluated and assessed the adipogenetic potential of a novel internal tissue expander in an in vivo animal model.METHODS:
New Zealand female rabbits were enrolled in the study. A prototype spiral inner tissue expander was employed. It consisted of a-dynamic conic expander (DCE) with a valve at the end when empty, it is flat (Archimedean spiral), whereas when filled with a fluid, it takes a conic shape. Inside the conic spiral, a negative pressure is therefore created. DCE is implanted flat under the latissimus dorsi muscle in experimental animals (rabbit) and then filled to reach the conical shape. Animals were investigated with magnetic resonance imaging, histology, and transmission electronic microscopy at 3, 6, and 12 months.RESULTS:
Magnetic resonance imaging revealed a marked increase in newly formed adipose tissue, reaching its highest amount at 12 months after the DCE implantation. Histology confirmed the existence of new adipocytes, whereas transmission electronic microscopy ultrastructure confirmed that most of these new cells were mature adipocytes.CONCLUSIONS:
Tensile stress, associated with negative-pressure expanders, generated newly white subcutaneous adipose tissue.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Implantes de Mama
/
Procedimentos de Cirurgia Plástica
Limite:
Animals
Idioma:
En
Revista:
Aesthet Surg J
Ano de publicação:
2020
Tipo de documento:
Article