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Advancing Standardization in Fat Graft Survival Studies: Assessing the Superiority of Paraepididymal Fat Graft as a Donor Site. | LitMetric
Background : There is currently no standardization in the field of research on fat grafts in rats, which is one of the most popular topics in plastic surgery. The aim of our study was to demonstrate the effects of selecting paraepididymal fat grafts as the donor area on enhancing the reliability of fat graft studies.Methods : In this study, 12 male Sprague-Dawley rats were used to obtain adipose grafts from both inguinal and paraepididymal regions. After measuring the graft weights, they were subjected to histological examination using hematoxylin-eosin staining, as well as immunohistochemical staining with antiperilipin antibody. Purity of the samples, viability of adipose cells, and the presence of lymph nodes within the grafts were analyzed.Results : The purity of adipose cells in graft samples obtained from the paraepididymal region was found to be 98.1% compared with the total sample. In contrast, the purity of adipose cells in graft samples obtained from the inguinal region was 58.37%. Hematoxylin-eosin staining revealed significantly higher adipocyte viability and vascularity in the paraepididymal region compared with the inguinal region (P = 0.0134). Conversely, lymphatic tissue content in samples obtained from the inguinal region was significantly higher compared with paraepididymal adipose tissue samples (P < 0.0001). Immunohistochemical staining with antiperilipin antibody showed a denser and more uniform staining pattern in paraepididymal adipose grafts (P < 0.0001).Conclusions : Using paraepididymal fat, devoid of lymphatic tissue, naturally eliminates 2 critical biases (estrogen and lymphatic tissue), enhancing the standardization and reliability of fat graft survival studies.
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