Abstract
Background: Tissue healing consists of four main phases: coagulation, inflammation, proliferation, and remodeling. In diabetic patients, this process is stagnant in the inflammatory stage, leading to chronic wounds. The aim of this study is to evaluate in an animal model the biological evidence related to the use of the Rigenera® technology (Turin Italy), an innovative mechanical procedure to isolate autologous micrografts (AMG). Methods: Fifty male Wistar rats were divided into four groups: control (C), control treated with micrografts (CM), diabetic (DB), and diabetic treated with micrografts (DBM). The experimental setup involved: the quantification of the total collagen and elastic fibers; histopathological analysis; immunohistochemical analysis for collagen type I (COL1), collagen type III (COL3), vascular endothelial growth factor (VEGF-A), and interleukin 4 (IL4) and 10 (IL10); evaluation of the oxidative stress; measurement of gluthatione (GSH); and, finally, an enzyme-linked immunosorbent assay (ELISA) on tumor necrosis factor-α (TNF-α). Results: The AMG technology induces a faster healing process: VEGF-A, IL4, IL10, and GSH increased, while TNF-α and oxidative stress decreased. Conclusions: Animals treated with micrografts showed more favorable results for healing compared to those that did not receive treatment, demonstrating a positive participation of the micrografts in the treatment of difficult-to-heal wounds.
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