中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (22): 3506-3512.doi: 10.3969/j.issn.2095-4344.0847

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深Ⅱ度烫伤创面局部应用神经生长因子-胰岛素凝胶后微血管密度及增殖细胞核抗原的变化

徐海涛1,王 敏2,向喜娟3   

  1. 1重庆医科大学附属永川医院骨科,重庆市 402160;2山东省淄博市中心医院烧伤科,山东省淄博市 255000;3重庆市永川区中医院眼科,重庆市 402160
  • 收稿日期:2018-02-20 出版日期:2018-08-08 发布日期:2018-08-08
  • 通讯作者: 向喜娟,重庆市永川区中医院眼科,重庆市 402160
  • 作者简介:徐海涛,男,1987年生,山东省潍坊市人,硕士,主治医师,主要从事骨科研究。
  • 基金资助:

    重庆医科大学附属永川医院资助项目(YJLCX201540)

Topical usage of nerve growth factor-insulin gel on deep II scald wound increases microvessel density and proliferating cell nuclear antigen expression

Xu Hai-tao1, Wang Min2, Xiang Xi-juan3   

  1. 1Department of Orthopedics, Yongchuan Hospital of Chongqing Medical University, Chongqing 402160, China; 2Department of Burn, Central Hospital of Zibo, Zibo 255000, Shandong Province, China; 3Department of Ophthalmology, Yongchuan District Hospital of Traditional Chinese Medicine, Chongqing 402160, China
  • Received:2018-02-20 Online:2018-08-08 Published:2018-08-08
  • Contact: Xiang Xi-juan, Department of Ophthalmology, Yongchuan District Hospital of Traditional Chinese Medicine, Chongqing 402160, China
  • About author:Xu Hai-tao, Master, Attending physician, Department of Orthopedics, Yongchuan Hospital of Chongqing Medical University, Chongqing 402160, China
  • Supported by:

    the Funded Project of Yongchuan Hospital Affiliated to Chongqing Medical University, No. YJLCX201540

摘要:

文章快速阅读:

 

文题释义:
神经生长因子:当机体受损伤时,神经生长因子是由损伤部位周围组织或细胞分泌的一种促进创面愈合因子,其可增加肉芽厚度,促进再上皮化进程,增强创面组织抗张力强度,促使新血管再生,参与创面修复各个过程并发挥了重要作用。
神经生长因子-胰岛素凝胶修复创面损伤①烫伤创面血管再生能力下降,神经生长因子及其受体表达受抑制,补充外源性神经生长因子可激活血管内皮生长因子A表达,提高烫伤创面血管再生能力,从而抑制血管内皮细胞凋亡;②胰岛素局部应用可作为趋化因子直接对炎性细胞作用,加速创面愈合启动,增加表皮皮生长因子和碱性成纤维细胞生长因子表达,促进成纤维细胞和表皮干细胞增殖、迁移,增加血管内皮生长因子mRNA的合成,促进血管新生和肉芽组织生长;③胰岛素和神经生长因子的协同促进作用:胰岛素局部外用可以显著提高修复细胞的增殖能力,促进神经生长因子分泌,明显增强血管内皮细胞的增殖能力。
 
 
背景:国内外研究表明,神经生长因子可明显促进烫伤创面愈合,但对于糖尿病烫伤创面局部神经生长因子联合用药的报道较少。
目的:研究糖尿病大鼠深Ⅱ度烫伤创面局部应用神经生长因子-胰岛素凝胶后微血管密度及增殖细胞核抗原的变化。
方法:将75只Wistar 大鼠随机分为5组,正常对照组在大鼠背部制作深Ⅱ度烫伤模型,烫伤创面敷卡波姆980凝胶;其余4组均制作糖尿病模型,3 d后在大鼠背部制作深Ⅱ度烫伤模型,模型对照组烫伤创面敷卡波姆980凝胶,神经生长因子组、胰岛素组、联合组(此3组血糖正常)分别在烫伤创面敷含神经生长因子的卡波姆980凝胶、含胰岛素的卡波姆980凝胶及含神经生长因子-胰岛素的卡波姆980凝胶,各组每天换药1次,连续21 d。烫伤后3,7,11,15,21 d,检测各组大鼠创面愈合率及创面微血管密度及增殖细胞核抗原变化。

结果与结论:①联合组烫伤不同时间点的创面愈合率、微血管密度及增殖细胞核抗原表达均高于其余4组   (P < 0.05);②苏木精-伊红染色显示,烫伤后1 d,各组表现为不同程度的组织结构破坏、血管扩张、炎性细胞浸润;烫伤后3 d后可见少量新生毛细血管,联合组最为明显;烫伤后7-11 d,各组毛细血管及炎性细胞逐渐增加;烫伤后15 d,联合组再上皮化明显,新生胶原纤维排列整齐,神经生长因子组、胰岛素组比正常对照组、模型对照组新生血管数量增多,但胶原纤维排列紊乱;烫伤后21 d,联合组创面被上皮细胞覆盖,胶原纤维排列整齐;其他组均有不同程度的上皮化,正常对照组、模型对照组不及神经生长因子组、胰岛素组;③结果表明,糖尿病大鼠深Ⅱ度烫伤创面局部应用神经生长因子-胰岛素凝胶,可增加微血管密度及增殖细胞核抗原的表达,利于创面愈合。

ORCID: 0000-0002-5865-8839(向喜娟)

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程

关键词: 神经生长因子, 胰岛素, 糖尿病, 烫伤创面, 生物材料, 敷料, 凝胶基质

Abstract:

BACKGROUND: Researches have shown that nerve growth factor can promote wound healing, but there are few reports on the topical application of nerve growth factor combined with medication on diabetic scald wound.

OBJECTIVE: To explore the changes of microvessel density and proliferating cell nuclear antigen expression after topical application of nerve growth factor-insulin gel on deep II scald wound in diabetic rats.
METHODS: Seventy-five Wistar rats were randomly divided into five groups. Deep II scald models were made on the back of rats in normal control group followed by topical application of Carbopol 980. Diabetic models and deep II scald models were both made in the remaining rats with an interval of 3 days. Then, the rats in the latter four groups were subjected to topical application of Carbopol 980 alone, or Carbopol 980 containing nerve growth factor, insulin and combination of nerve growth factor and insulin, respectively. The wound in each rat was redressed once a day, for 21 consecutive days. Wound healing rate, microvessel density and proliferating cell nuclear antigen expression in rats were detected at 3, 7, 11, 15, 21 days after scald.

RESULTS AND CONCLUSION: Wound healing rate, microvessel density and proliferating cell nuclear antigen expression were higher in the combination group than the other four groups at different time after scald (P < 0.05). Results from hematoxylin-eosin staining showed that different structure damages, angiectasis and inflammatory cell infiltration were observed in different groups at 1 day after scald. A small amount of new capillaries were visible in each group, especially in the combination group at 3 days after scald. The number of capillary vessels and inflammatory cells increased gradually at 7-11 days after scald. Marked re-epithelialization and regular arrangement of collagen fibers were observed in the combination group at 15 days after scald. Meanwhile, compared with the normal control group and model group, the number of new vessels was increased in the nerve growth factor and insulin groups, but collagen fibers arranged disorderly. The wound in the combination group was covered with epithelial cells and collagen fibers arranged orderly at 21 days after scald, while there are different levels of epithelization in the other four groups. Higher level of epithelization was found in the nerve growth factor and insulin groups than the normal control and model groups. To conclude, topical application of nerve growth factor-insulin gel on deep II scald wound can promote wound healing by increasing microvessel density and proliferating cell nuclear antigen expression.

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程

Key words: Gels, Biological Dressings, Insulin, Nerve Growth Factor, Diabetes Mellitus

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