Cartwright Brian Michael, Fox Sean James, Underdown Mary Jane, Clark William Andrew, Molnar Joseph Andrew
ETSU Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614, USA.
Department of Rehabilitative Sciences, College of Clinical and Rehabilitative Health Sciences, East Tennessee State University, Johnson City, TN 37614, USA.
Antioxidants (Basel). 2023 May 30;12(6):1176. doi: 10.3390/antiox12061176.
Current treatments for deep tissue burns are limited, and most serve only to enhance hydration or prevent bacterial growth. This leaves burn healing dependent on slow natural processes to debride the wound and reestablish the epidermal and dermal layers of the skin. Infections are well known to destabilize this process through a variety of mechanisms, most notably through increased inflammation and the resulting oxidative stress. In this study, we show that ARAG (an antioxidant-rich antimicrobial gel) can suppress the growth of multiple bacteria commonly found to infect burns (, , , and ). This inhibition is comparable to that conferred by silver ion release from burn dressings such as Mepilex-Ag. We further show, using a porcine model for deep partial-thickness burns, that ARAG allows for enhanced wound healing over Mepilex-Ag, the current standard of care. Histological findings indicate this is likely due to increased wound debridement and dampening of late inflammatory processes, leading to more balanced physiologic healing. Taken together, these findings show promise for ARAG as a superior alternative to the current standard of care.
目前针对深度组织烧伤的治疗方法有限,且大多数仅用于增强水合作用或防止细菌生长。这使得烧伤愈合依赖于缓慢的自然过程来清创伤口并重新建立皮肤的表皮和真皮层。众所周知,感染会通过多种机制破坏这一过程,最显著的是通过增加炎症反应以及由此产生的氧化应激。在本研究中,我们表明ARAG(一种富含抗氧化剂的抗菌凝胶)可以抑制多种常见的烧伤感染细菌(、、和)的生长。这种抑制作用与烧伤敷料(如Mepilex-Ag)释放银离子所产生的抑制作用相当。我们进一步使用猪的深Ⅱ度烧伤模型表明,与当前的护理标准Mepilex-Ag相比,ARAG能促进伤口愈合。组织学结果表明,这可能是由于伤口清创增加以及晚期炎症过程的减轻,从而导致更平衡的生理愈合。综上所述,这些发现表明ARAG有望成为当前护理标准的优质替代方案。