紫白膏促进创面修复的作用及机制研究
Effect and Mechanism of Zibai Ointment in Promoting Wound Repair
目的 探究紫白膏促进大鼠创面修复的作用及可能机制。 方法 ① 动物实验:采用外科创面结合金黄色葡萄球菌感染建立大鼠红肿创面模型。将造模成功的大鼠随机分为空白组、凡士林组和紫白膏组,每组7只。凡士林组外用凡士林,紫白膏组外用紫白膏,涂抹量均为3 g;空白组不做处理。创面清洁包扎防治感染,每天进行换药至创面完全愈合。观察3组大鼠创面色泽、质地,测量创面面积。待创面完全恢复后将大鼠脱颈处死,剥离新生的组织。RT-qPCR检测大鼠创面组织血管内皮细胞生长因子(VEGF)和血管生成素-1(Ang-1)mRNA相对表达水平。② 细胞实验:将HUVEC细胞分为DMSO组、1 mg/mL组、5 mg/mL组和10 mg/mL组,DMSO组用DMSO溶液干预,1、5、10 mg/mL组分别用1、5、10 mg/mL紫白膏混悬液干预,均干预48 h。MTT法检测干预12、24、48 h后细胞活力;划痕愈合实验检测细胞迁移能力;Transwell迁移和侵袭实验检测细胞迁移和侵袭能力;RT-qPCR检测HUVEC细胞VEGF和Ang-1 mRNA相对表达水平。 结果 ① 动物实验:与空白组和凡士林组比较,紫白膏组治疗第4天后创面面积均明显缩小(P<0.05)。与空白组比较,凡士林组和紫白膏组VEGF和Ang-1 mRNA相对表达水平明显升高(P<0.05);与凡士林组比较,紫白膏组VEGF和Ang-1 mRNA相对表达水平明显升高(P<0.05)。② 细胞实验:与DMSO组比较,1 mg/mL组干预12、24、48 h后活力明显提高(P<0.05),5、10 mg/mL组干预12、24、36、48 h后细胞活力明显提高(P<0.05)。与DMSO组比较,1、5、10 mg/mL组细胞迁移率明显升高(P<0.05),侵袭和迁移的细胞计数明显增多(P<0.05),VEGF和Ang-1 mRNA相对表达水平明显升高(P<0.05)。 结论 紫白膏通过促进创面血管生成,从而加速创面愈合。
Objective To explore the effect and mechanism of Zibai ointment in promoting wound repair in rats. Methods 1) animal experiment: a full-layer incision was made on the back of the rats and staphylococcus aureus was used to establish the wound redness and swelling model. The rats with successful modeling were randomly divided into blank group, vaseline group and Zibai ointment group, with 7 rats in each group. The vaseline group was externally coated with vaseline, and the Zibai ointment group was externally coated with Zibai ointment, with a dosage of 3 g. The wound was cleaned and bandaged to prevent infection, and dressing was changed daily until the wound was completely healed. The color and texture of the wound were observed, and the area of the wound was measured. The mRNA expression level of vascular endothelial growth factor (VEGF) and angiopoietin-1 (Ang-1) was detected by RT-qPCR. 2) Cells experiment: HUVEC cells were divided into DMSO group, 1 mg/mL group, 5 mg/mL group, and 10 mg/mL group. The DMSO group was intervened with DMSO solution, while the 1, 5, and 10 mg/mL groups were intervened with 1, 5, and 10 mg/mL Zibai ointment paste suspension, respectively, for 48 hours. MTT assay was used to detect the cells viability after 12, 24 and 48 hours of intervention; the cell migration ability was detected by scratch healing test; the transwell migration and invasion assay was used to detect the migration and invasion ability of cells; the mRNA expression level of VEGF and Ang-1 was detected by RT-qPCR. Results 1) animal experiment: Compared with the blank group and vaseline group, the wound area of Zibai ointment treatment group significantly decreased after 4 days of treatment (P<0.05). Compared with the blank group, the mRNA expression level of VEGF and Ang-1 in vaseline and Zibai ointment groups significantly increased (P<0.05). Compared with the vaseline group, the mRNA expression level of VEGF and Ang-1 in Zibai ointment group significantly increased (P<0.05). 2) Cell experiment: Compared with the DMSO group, the cells viability of 1 mg/mL group significantly increased after intervention for 12, 24 and 48 hours (P<0.05), and 5, 10 mg/mL groups significantly increased after intervention for 12, 24, 36, and 48 h (P<0.05). Compared with the DMSO group, the cell migration rate in 1, 5 and 10 mg/mL groups significantly increased (P<0.05); the number of cells attacked and migrated significantly increased (P<0.05); the mRNA expression level of VEGF and Ang-1 mRNA significantly increased (P<0.05). Conclusion Zibai ointment can accelerate wound healing by promoting wound angiogenesis.
创面修复 / 紫白膏 / 血管生成 / 划痕愈合 / 侵袭 / 迁移
wound repair / Zibai ointment / angiogenesis / scratch healing / invasiveness / migration
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福建省教育厅中青年教师教育科研项目(JAT220123)
福建省第四批老中医药专家学术经验继承项目(闽卫中医函〔2022〕554号)
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