中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (11): 1538-1543.doi: 10.3969/j.issn.2095-4344.2016.11.003

• 皮肤粘膜组织构建 skin and mucosal tissue construction • 上一篇    下一篇

P物质对表皮细胞聚集、分化控制及在皮肤创伤修复中的应用

彭希亮,张玉红,倪文琼   

  1. 郑州大学附属郑州中心医院,河南省郑州市 450007
  • 收稿日期:2016-01-26 出版日期:2016-03-11 发布日期:2016-03-11
  • 作者简介:彭希亮,男,1970年生,河南省汝南县人, 2004年华中科技大学同济医学院毕业,副主任医师,主要从事感染溃疡性皮肤病和皮肤血管炎的研究。
  • 基金资助:
    河南省中医药科研专项课题(2014ZY02082)

Substance P effects on aggregation and differentiation control of epidermal stem cells and skin wound repair

Peng Xi-liang, Zhang Yu-hong, Ni Wen-qiong   

  1. Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou 450007, Henan Province, China
  • Received:2016-01-26 Online:2016-03-11 Published:2016-03-11
  • About author:Peng Xi-liang, Associate chief physician, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou 450007, Henan Province, China
  • Supported by:

    the Scientific Research Project of Traditional Chinese Medicine of Henan Province, No. 2014ZY02082

摘要:

文章快速阅读:

文题释义:

P物质:它是一种高活性的神经肽类物质,广泛地分布于神经系统和其他外周组织器官内,具有多种生理功能。在皮肤内,P 物质主要由感觉神经末梢释放,它通过趋化免疫细胞、调节细胞因子的产生以及舒张微血管等参与皮肤局部免疫炎症反应;还可促进皮肤内多种细胞的分裂、增殖以及细胞DNA的合成,参与皮肤创伤的修复。

创伤反应:是一种完整的生物进化的固有应答,即可溶性介质从一个细胞释放最终引起另一些细胞发生一系列的反应,导致基因转录、蛋白翻译,最终修复创口界面,也是一个复杂而有序的生物学过程,涉及炎症反应、细胞增殖、迁移、创面重塑等多个连贯又相互交叉的病理生理学过程。

 

背景:表皮干细胞是皮肤及其附属器修复的源泉细胞,研究其分化、迁移的调控机制是实现其完美愈合的关键。
目的:探讨P物质在皮肤创伤修复中的应用效果。
方法:采用随机对照方法将30只Wistar大鼠分为P物质组、辣椒素组和对照组,每组10只。建立皮肤缺损模型后分别于创面局部注射外源性神经肽P物质、辣椒素、生理盐水,均连续注射5 d。用药不同时间点检测3组大鼠皮肤厚度、皮肤创伤面积、BrdU阳性细胞率。

结果与结论:①用药第14天3组大鼠皮肤厚度差异无显著性意义(P > 0.05);随着用药时间的不断延长,表皮厚度开始变薄;用药第42天,P物质组表皮厚度明显缩小,对照组表皮厚度变化不明显,辣椒素组表皮厚度有所缩小。②皮肤创伤3,5,7 d时P物质组皮肤创伤面积显著小于对照组和辣椒素组(P < 0.05),辣椒素组和对照组的创伤面积差异无显著性意义(P > 0.05)。③P物质组在用药第3,5,7,12天时BrdU细胞阳性率显著高于辣椒素组和对照组(P < 0.05);辣椒素组在第3,5,7,12天时BrdU细胞阳性率显著低于对照组(P < 0.05)。④结果提示P物质能够促进表皮细胞增殖,加速创面部位愈合。 

ORCID: 0000-0003-3920-1283(彭希亮)

关键词: 组织构建, 组织工程, 表皮细胞, P物质, 聚集, 皮肤创伤, 辣椒素

Abstract:

BACKGROUND: Epidermal stem cells are the source of cells for repairing the skin and its appendages. To study differentiation and migration of epidermal stem cells is crucial for perfect healing.
Objective: To investigate the effects of substance P in skin wound repair.
METHODS: Thirty Wistar rats were randomized into groups of substance P, capsaicin and control (n=10 per group). After the establishment of skin defect models, exogenous neuropeptide substance P, capsaicin, and normal saline were daily injected at the wound for continuous 5 days. Skin thickness, skin wound area, BrdU-positive cells were detected in the three groups at different time after injection.
Results and conclusions: No difference n the skin thickness was found in the three groups at 14 days after injection (P > 0.05), but with time, the epidermal thickness was reduced. At 42 days, the epidermal thickness was reduced remarkably in the substance P group and decreased certainly in the capsaicin group, but unchanged in the control group. The wound area of the substance P group was significantly lower than that in the control and capsaicin groups at 3, 5, 7 days after injection (P < 0.05), but there was no difference between the control and capsaicin group (P > 0.05). The BrdU positive rates in the three groups were significantly different at 3, 5, 7, 12 days after injection: the substance P group > the control group > the capsaicin group (P < 0.05). These results show that substance P can promote epidermal cell proliferation and accelerate wound healing.