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Higher Cell Viability and Enhanced Sample Quality Following Laser-Assisted Liposuction versus Mechanical Liposuction

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Journal of Cosmetics, Dermatological Sciences and Applications 2015年第3期5卷 238-245页

作者： alexander levenberg Mickey Scheinowitz Orna Sharabani-Yosef Department of Plastic Surgery Tel Aviv Sourasky Medical Center Tel Aviv Israel Department of Biomedical Engineering Faculty of Engineering Tel Aviv University Tel Aviv Israel

Background: Despite the popularity of autologous fat transfer applications, high resorption rates, and consequential volume loss, have been reported. Viable adipocyte content has been defined as a key determinant of fat transfer longevity. Moreover, traces of blood, free oil fat and fibrotic tissue accelerate adipocyte degradation. Objective: To compare the effectiveness of a 1470 nm, radial emitting laser-assisted liposection device to a mechanical liposection device in maintaining adipocyte viability in fat tissue harvests. Methods: Bilateral subcutaneous adipose tissue samples were harvested from ten female patients. Fat was harvested from one side using the LipoLife laser-assisted liposuction device and from the other side with a Byron mechanical aspirator. Samples were visually analyzed and blood:fat ratios and cell viability were determined. Results: Laser-harvested samples separated into two distinct phases, with a negligible blood phase at the bottom (1.1%) and a significant adipose phase at the top (98.9%), containing small, uniform-sized cells, of which 95.7% ± 2.7% proved viable. Mechanically harvested samples separated into blood (18%), adipose (60%) and lipid (22%) phases. The adipose phase contained significant amounts of connective tissue, large adipose tissue fragments, large oil droplets and a mean 79.7% ± 18.3% viable adipocytes. Conclusions: Laser liposuctioning was superior to mechanical liposuctioning, providing both higher cell viability and enhanced sample quality. The 1470 nm diode laser bears the potential of improving long-term clinical outcomes of fat transfer procedures. Improved purity of the harvested sample and heightened preadipocyte content are projected to provide for extended graft longevity.

关键词： Laser Liposuction Cell Viability Fat Transfer Preadipocyte

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