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Abstract
This study was conducted to explore the effect of adipose-derived stem cells (ASCs) on the graft survival rates of fat particles in rabbits. Six domestic rabbits were used for a 3-month study; 1.4 grams of fat tissues were harvested from the bilateral inguinal regions of each animal. They were cut into granules and divided into three parts (A = 0.4 g, B = 0.4 g, and C = 0.6 g). Part A was centrifuged after 0.075% collagenase digestion for isolation of the stromal vascular fraction (SVF). About 0.2 grams of SVF containing ASCs was obtained, and then incorporated with part B to create a treated group, whereas part C was treated as a control group. The tissues in both groups were randomly transplanted into a subcutaneous space that had been created on each side of the dorsal midline of the rabbit. The grafts were taken out after 3 months for calculation of the survival rates. The graft survival rate in the treated group was 23.56 ± 2.49%, while that in the control group was 11.06 ± 2.10%. The graft survival rate in the treated group increased significantly, compared with in the control group (p < 0.01). Improved transplantation effects may be obtained by implanting the fat particles mixed with ASCs. It is suggested that this approach has the potential for becoming a new method of fat graft in clinical practice.
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