吉林大学学报(医学版) ›› 2021, Vol. 47 ›› Issue (2): 265-274.doi: 10.13481/j.1671-587X.20210203

• 基础研究 • 上一篇    下一篇

毛樱桃总黄酮对小鼠皮肤增生性瘢痕的抑制作用及其机制

邹天琪1,柏林1,张铮旭1,李贺1,王春梅1,孙靖辉1,陈建光1,陈曦2(),张成义1()   

  1. 1.北华大学药学院药理教研室,吉林 吉林 132013
    2.北华大学医学院病原学教研室,吉林 吉林 132013
  • 收稿日期:2020-07-30 出版日期:2021-03-28 发布日期:2021-03-25
  • 通讯作者: 陈曦,张成义 E-mail:846617750@qq.com;zhchyjl@163.com
  • 作者简介:邹天琪(1996-),女,吉林省吉林市人,在读硕士研究生,主要从事药理学方面的研究。
  • 基金资助:
    吉林省科技厅科技攻关项目(20190304048YY);吉林省卫健委科研基金项目(2019J046);吉林省吉林市科 技局科技计划项目(201820847)

Inhibitory effect of prunus tomentosa thunb total flavonoids on skin hypertrophic scar in mice and its mechanism

Tianqi ZOU1,Lin BAI1,Zhengxu ZHANG1,He LI1,Chunmei WANG1,Jinghui SUN1,Jianguang CHEN1,Xi CHEN2(),Chengyi ZHANG1()   

  1. 1.Department of Pharmacology,College of Pharmacy,Beihua University,Jilin 132013,China
    2.Department of Etiology,College of Medical Sciences,Beihua University,Jilin 132013,China
  • Received:2020-07-30 Online:2021-03-28 Published:2021-03-25
  • Contact: Xi CHEN,Chengyi ZHANG E-mail:846617750@qq.com;zhchyjl@163.com

摘要: 目的

探讨毛樱桃总黄酮(PTTTF)对小鼠皮肤增生性瘢痕(HS)形成的作用,并阐明其可能的作用机制。

方法

将96只ICR雄性小鼠随机分为空白对照组,模型对照组(给予相同剂量的涂膜剂空白基质),低、中和高剂量毛樱桃涂膜剂(PTTP)组(分别给予0.4、0.8 和1.6 mg·L-1 PTTP),阳性对照复方醋酸地塞米松乳膏(DXM)组,每组16只。除空白对照组外,其余各组小鼠均采用皮肤打孔器,以脊柱为中线在背部两侧制造2个直径为10 mm的全层皮肤缺损模型,每天给药1次,每次给药0.1 mL涂抹。每天观察各组小鼠创面愈合情况,计算伤口愈合率。分别于造模第10、20、30和40天处死每组小鼠4只,取创面全层皮肤组织。采用HE染色观察HS皮肤组织病理形态表现,Western blotting法检测各组小鼠皮肤瘢痕组织中活化的含半胱氨酸的天冬氨酸蛋白酶3(Cleaved caspase-3)、B细胞淋巴瘤2(Bcl-2)和Bcl-2相关X蛋白(Bax)蛋白表达水平。

结果

与模型对照组比较,造模第40天时,低、中和高剂量PTTP组小鼠创面愈合率分别为98.94%、99.14%和99.04%,差异有统计学意义(P<0.05)。HE染色,与模型对照组比较,各剂量PTTP组小鼠伤口愈合较快,逐渐恢复到正常皮肤结构,有皮脂腺、毛囊和汗腺等皮肤附属器生成。Western blotting法检测,与模型对照组比较,各剂量PTTP组小鼠皮肤瘢痕组织中Cleaved caspase-3和Bax蛋白表达水平明显升高(P<0.05或P<0.01),Bcl-2蛋白表达水平明显降低(P<0.05或P<0.01)。

结论

PTTTF可促进伤口愈合,对小鼠HS的形成具有一定的抑制作用,其作用机制可能与诱导细胞凋亡有关。

关键词: 毛樱桃总黄酮, 伤口愈合, 增生性瘢痕, 细胞凋亡

Abstract: Objective

To investigate the effect of prunus tomentosa thunb total flavone (PTTTF) on the formation of skin hypertrophic scar (HS) in the mice, and to elucidate its possible mechanism.

Methods

A total of 96 male ICR mice were randomly divided into blank control group, model control group (given same amount of blank matrix as the plastics), low, middle and high doses of prunus tomentosa thunb plastics (PTTP) groups (given 0.4, 0.8, and 1.6 g·L-1)PTTP and positive control (DXM) group; there were 16 mice in each group. Except for blank control group, the mice in other groups were used to set up two full-thickness skin defect models with diameter of 10 mm made on both sides of the back by using a skin punch with the spine as the midline. The drug was given once a day and smeared with 0.1 mL each time. The wound healing was observed every day and the wound healing rate was calculated. Four mice in each group were killed on the 10th day, 20th day, 30th day and 40th day, respectively, and the full-thickness skin tissue of the wound was taken.The pathomorphology of HS skin tissue was observed by HE staining. Western blotting method was used to detect the protein expression levels of cysteinyl aspartats specific proteinase-3(Cleaved caspase-3), B cell lymphoma-2(Bcl-2) and Bcl-2 associated X protein(Bax) in skin tissue of the mice in various groups.

Results

Compared with model control group, on the 40th day, the healing rates of the mice in low, middle and high doses of PTTP groups were 98.94%, 99.14%, and 99.04%, respectively; there were significant differences (P<0.05). The results of HE staining showed that compared with model control group, the wound in different doses of PTTP groups healed faster and gradually recovered to the normal skin structure, with the formation of skin appendages such as sebaceous glands, hair follicles, sweat glands and so on. The results of Western blotting method showed that compared with model control group, the expression levels of Cleaved caspase-3 and Bax proteins in different doses of PTTP groups were increased significantly (P<0.05 or P<0.01), while the expression levels of Bcl-2 protein were decreased significantly (P<0.05 or P<0.01).

Conclusion

PTTTF can promote wound healing and has a certain inhibitory effect on the formation of HS in the mice; and its mechanism may be related to inducing apoptosis.

Key words: prunus tomentosa thunb total flavones, wound healing, hypertrophic scar, apoptosis

中图分类号: 

  • R285.5