中国组织工程研究 ›› 2021, Vol. 25 ›› Issue (20): 3150-3155.doi: 10.3969/j.issn.2095-4344.3221

• 组织构建实验造模 experimental modeling in tissue construction • 上一篇    下一篇

隐丹参酮抑制模型兔耳增生性瘢痕的作用及机制

杨  莉,李雪莉,宋静卉,禹卉千,王伟霞   

  1. 河南省人民医院皮肤科,郑州大学人民医院,河南省郑州市   450003
  • 收稿日期:2020-05-11 修回日期:2020-05-15 接受日期:2020-06-04 出版日期:2021-07-18 发布日期:2021-01-15
  • 通讯作者: 杨莉,博士,主治医师,河南省人民医院皮肤科,郑州大学人民医院,河南省郑州市 450003
  • 作者简介:杨莉,女,1980年生,河南省郑州市人,2018年昆明医科大学毕业,博士,主治医师,主要从事皮肤美容方面的研究。
  • 基金资助:
    河南省医学教育研究项目(Wjlx2018086) ,项目负责人:李雪莉

Effect of cryptotanshinone on hypertrophic scar of rabbit ear and its related mechanism

Yang Li, Li Xueli, Song Jinghui, Yu Huiqian, Wang Weixia   

  1. Department of Dermatology, Henan Provincial People’s Hospital, Zhengzhou University People’s Hospital, Zhengzhou 450003, Henan Province, China
  • Received:2020-05-11 Revised:2020-05-15 Accepted:2020-06-04 Online:2021-07-18 Published:2021-01-15
  • Contact: Yang Li, Department of Dermatology, Henan Provincial People’s Hospital, Zhengzhou University People’s Hospital, Zhengzhou 450003, Henan Province, China
  • About author:Yang Li, MD, Attending physician, Department of Dermatology, Henan Provincial People’s Hospital, Zhengzhou University People’s Hospital, Zhengzhou 450003, Henan Province, China
  • Supported by:
    the Henan Medical Education Research Project, No. Wjlx2018086 (to LXL)

摘要:

文题释义:
隐丹参酮:是从丹参根及根茎中提取出的一种脂溶性醌类衍生物,具有抗炎、抗氧化及抗肿瘤细胞增殖等多种药理作用,同时对心血管疾病、内分泌代谢疾病及慢性肾功能衰竭等疾病具有预防作用。近年研究发现隐丹参酮具有抗纤维化作用。
增生性瘢痕:是各种烧、创伤后的常见并发症,常伴有瘙痒、疼痛及关节活动受限等不适症状,其病理特征主要表现为肌成纤维细胞的过度增殖及细胞外基质尤其是胶原的过度沉积。增生性瘢痕不仅影响组织外观,还会干扰皮肤功能恢复,严重影响患者的身心健康。
背景:研究表明隐丹参酮对增生性瘢痕组织增生具有一定的抑制作用,但具体机制尚不明确。
目的:探讨隐丹参酮对兔耳增生性瘢痕组织的抑制作用及其对转化生长因子β1/Smads信号通路的影响。
方法:建立增生性瘢痕兔耳模型,随机分为模型组、隐丹参酮27 mg/L组和隐丹参酮81 mg/L组,3组于建模后21 d分别局部注射生理盐水、27 mg/L及81 mg/L隐丹参酮,1 次/d,共7 d;同时以正常兔为对照组。给药结束后测量瘢痕指数,取材后采用苏木精-伊红染色和Masson染色进行病理学分析,免疫组化法检测α-平滑肌肌动蛋白表达,碱水解法检测羟脯氨酸含量,免疫印迹法检测Ⅰ,Ⅲ型胶原及转化生长因子β1/Smads信号通路相关蛋白表达水平。
结果与结论:①与对照组比较,模型组瘢痕指数、成纤维细胞及胶原纤维数量明显升高,瘢痕组织中α-平滑肌肌动蛋白水平、羟脯氨酸含量及Ⅰ,Ⅲ型胶原、转化生长因子β1、p-Smad2、p-Smad3、Smad4的蛋白表达水平均明显升高(P < 0.05);②与模型组比较,隐丹参酮27 mg/L组和隐丹参酮81 mg/L组瘢痕指数、成纤维细胞及胶原纤维数量明显降低,瘢痕组织中α-平滑肌肌动蛋白水平、羟脯氨酸含量及Ⅰ,Ⅲ型胶原、转化生长因子β1、p-Smad2、p-Smad3、Smad4的蛋白表达水平均明显降低(P < 0.05),且隐丹参酮81 mg/L组变化更明显(P < 0.05);③提示隐丹参酮对兔耳增生性瘢痕的形成具有一定的抑制作用,其机制可能与转化生长因子β1/Smads信号通路有关。

关键词: 隐丹参酮, 增生性瘢痕, 胶原, 转化生长因子β1, Smads, 通路

Abstract: BACKGROUND: Cryptotanshinone (CTS) has been shown to have a certain inhibitory effect on hyperplastic scar hyperplasia, but the specific mechanism is still unclear.
OBJECTIVE: To investigate the inhibitory effect of CTS on hypertrophic scar of the rabbit ear and its effect on transforming growth factor-β1/Smads signaling pathway. 
METHODS: The rabbit ear model of hypertrophic scar was established and then rabbit models were randomly divided into model group, low and high-dose CTS groups, followed by local injection of normal saline, 27 and 81 mg/L CTS respectively beginning at 21 days after modeling, once a day, for 7 days. Meanwhile, normal rabbits were used as the control group. Scar index was measured after administration. Pathological analysis was carried out by hematoxylin-eosin staining and Masson staining after sampling. The expression of α-smooth muscle actin was detected by immunohistochemistry. Hydroxyproline content was determined by alkaline hydrolysis. The expression of type I collagen, type III collagen and transforming growth factor-β1/Smads signaling pathway related proteins were detected by western blot.
RESULTS AND CONCLUSION: Compared with the control group, the scar index, the number of fibroblasts and collagen fibers were significantly increased, the levels of α-smooth muscle actin and hydroxyproline in scar tissue, and the protein levels of type I collagen, type III collagen, transforming growth factor-β1, p-Smad2, p-Smad3 and Smad4 were significantly increased in the model group (P < 0.05). Compared with the model group, the scar index, the number of fibroblasts and collagen fibers were significantly decreased, the levels of α-smooth muscle actin and hydroxyproline in scar tissue, and the protein levels of type I collagen, type III collagen, transforming growth factor-β1, p-Smad2, p-Smad3 and Smad4 were significantly decreased in the low and high-dose CTS groups (P < 0.05). The above-mentioned parameters changed more significantly in the high-dose CTS group compared to the low-dose CTS group (P < 0.05). To conclude, CTS has a certain inhibitory effect on the formation of hypertrophic scar in rabbit ears, and its mechanism may be related to transforming growth factor-β1/Smads signaling pathway. 

Key words: cryptotanshinone, hypertrophic scar, collagen, transforming growth factor-β1, Smads, pathway

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