Density-Based High-Quality Fat: Characterization and Correlation with Different Body Fat Ratio.

[BACKGROUND] Lipoaspirate can be divided into high-quality fat and low-quality fat using Coleman's centrifugation by adding 0.935 g/ml marker float; the ratio obtained by different individuals is different.

[OBJECTIVES] This study aimed to examine the HQF obtained from different individuals and establish the relationship between individual body data and HQF.

[METHODS] We used Coleman's centrifugation method (1200 g, 3 min) with 0.935 g/ml density float to process lipoaspirate and collect HQF from different individuals for the analysis of fat characteristics and in vivo grafting.

[RESULTS] The HQF obtained from different individuals had similar stromal vascular fraction cell numbers and extracellular matrix content. In animal experiments at different time points (especially 12 weeks), the appearance, retention rate, hematoxylin and eosin staining, and immunohistochemistry results of HQF grafts were similar, while being different from those of Coleman fat. The HQF obtained from individuals with higher body fat ratio was less than those with lower body fat ratio. Following the establishment of the relationship between high-quality fat percentage and the body fat ratio of the donors, we proposed an innovative calculation formula model for the required lipoaspirate.

[CONCLUSIONS] HQF obtained from different individuals has similar fat characteristics, transplantation process, and outcome. The HQF percentage obtained from different individuals is negatively correlated with the body fat ratio. The amount of liposuction can be predicted using the proposed formula and improve the predictability of fat transplantation.

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