The use of adipose tissue-derived stem cells within a dermal substitute improves skin regeneration by increasing neoangiogenesis and collagen synthesis.

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

• Level A · Stronger Clinical Evidence
• Level B · Emerging clinical evidence with positive signals
• Level C · Early human research exploring benefits
• Level D · Scientific groundwork from lab and animal studies
• Emerging · Emerging topic under active research

Abstract (original English)

Background Surgical treatment of injuries with loss of skin tissue has improved significantly with the advent of regenerative medicine and tissue bioengineering, and the use of stem cells and dermal substitutes. The success of tissue regeneration depends on optimal local vascularization and the successful integration of the artificial skin. The present study combines the use of autologous adipose-derived stem cells with a commercially available dermal substitute (Integra) for skin regeneration. Methods Adipose-derived stem cells were isolated from the inguinal region of eight Sprague-Dawley adult rats, seeded onto a piece of dermal substitute for 48 hours, and then implanted into the same rat, followed by comparison of the evolution with a contralateral implant without adipose-derived stem cells. After 1, 2, and 3 weeks of regeneration in vivo, implants were removed for histologic evaluation. Results Adipose-derived stem cells adhere properly to the dermal matrix, and autologous tissue integration in the rat was good. The histologic evaluation showed that adipose-derived stem cells significantly increased microvascular density (7.7 ± 0.6 percent versus 5.3. ± 0.5 percent, as assessed by immunohistochemical staining of factor VIII) and the synthesis of collagen type I (24 ± 3 percent versus 16 ± 2 percent, as assessed by Sirius red staining). Although there was greater epithelia

Evidence level

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

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