Choi Hong Jin, Khan Zeeshan Ahmad, Ansari AbuZar, Choi Jeonghyun, Kim Eun Jin, Han Seo-Hee, Song Ho-Jun, Jeong Ok Chan, Hong Yonggeun
Department of Digital Anti-Aging Healthcare, Graduate School of Inje University, Gimhae 50834, Republic of Korea.
Department of Physical Therapy, College of Biomedical Science & Health, Inje University, Gimhae 50834, Republic of Korea.
Gels. 2025 Mar 24;11(4):239. doi: 10.3390/gels11040239.
BACKGROUND: The skin acts as a barrier against external threats, and moisture is crucial for effective wound healing, as it promotes epithelial cell migration. Thus, a high water content supports wound healing by maintaining moisture, absorbing exudate, and forming a protective barrier. Here, we created three different micro-patterned hydrogels and tested them on rat skin wounds. MATERIALS AND METHODS: Three different micro-patterned (waves, lines, and checks) hydrogel patches were created using three-dimensional polymer networks. On SD rat skin, wounds were created by making incisions, and the hydrogel patches were applied. The rats were divided into three experimental groups based on the hydrogel micro-patterns. Rats without hydrogel (vehicle) and those with flat hydrogel (no shape) were considered as controls. The wound closure rate (WCR) was calculated, and the expression of Col1A protein was measured by western blot. RESULTS: After 7 days, the WCR was significantly higher in the groups treated with micro-patterned hydrogel patches compared to the vehicle and no-shape groups. Specifically, the WCR was highest in the checks micro-patterned hydrogel group compared to the waves and lines micro-patterned hydrogel groups. Furthermore, Col1A protein expression was evaluated at days 7 and 14, revealing a significant increase in expression after 14 days in the checks micro-patterned hydrogel group compared to the waves and lines micro-patterned hydrogel groups. CONCLUSIONS: The checks micro-patterned hydrogel patches demonstrated superior wound healing efficacy, as indicated by a higher WCR and increased Col1A protein expression after 14 days. These findings highlight the importance of hydrogel pattern design in improving wound healing suggesting that optimized micro-patterns can enhance therapeutic outcomes in skin wound management.
背景:皮肤作为抵御外部威胁的屏障,水分对于有效的伤口愈合至关重要,因为它促进上皮细胞迁移。因此,高含水量通过保持水分、吸收渗出液和形成保护屏障来支持伤口愈合。在此,我们制备了三种不同的微图案水凝胶,并在大鼠皮肤伤口上进行了测试。 材料与方法:使用三维聚合物网络制备了三种不同的微图案(波浪形、线形和方格形)水凝胶贴片。在SD大鼠皮肤上,通过切口制造伤口,并应用水凝胶贴片。根据水凝胶微图案将大鼠分为三个实验组。未使用水凝胶(赋形剂)的大鼠和使用扁平水凝胶(无形状)的大鼠作为对照。计算伤口闭合率(WCR),并通过蛋白质免疫印迹法测量Col1A蛋白的表达。 结果:7天后,与赋形剂组和无形状组相比,使用微图案水凝胶贴片治疗的组的WCR显著更高。具体而言,与波浪形和线形微图案水凝胶组相比,方格形微图案水凝胶组的WCR最高。此外,在第7天和第14天评估Col1A蛋白表达,结果显示与波浪形和线形微图案水凝胶组相比,方格形微图案水凝胶组在第14天后表达显著增加。 结论:方格形微图案水凝胶贴片显示出卓越的伤口愈合效果,表现为较高的WCR和14天后Col1A蛋白表达增加。这些发现突出了水凝胶图案设计在改善伤口愈合中的重要性,表明优化的微图案可以提高皮肤伤口管理的治疗效果。
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