中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (22): 3495-3499.doi: 10.3969/j.issn.2095-4344.1276

• 纳米生物材料 nanobiomaterials • 上一篇    下一篇

丹黄散-纳米银海绵抑制铜绿假单胞菌的效果

李  桃1,张春玲2,龙  毅2,邸铁涛2,陈  露2,赵  伟2,龙  丽1,黄  蔷1,唐丽莎1,罗开中1
  

  1. 1贵州中医药大学(原贵阳中医学院),贵州省贵阳市  550002;2贵州中医药大学(原贵阳中医学院)第二附属医院,贵州省贵阳市  550003
  • 收稿日期:2019-03-29
  • 通讯作者: 张春玲,主任护师,硕士生导师,贵州中医药大学(原贵阳中医学院)第二附属医院,贵州省贵阳市 550003
  • 作者简介:李桃,女,1989年生,贵州省贵阳市人,汉族,贵州中医药大学(原贵阳中医学院)在读硕士,主要从事中西医结合糖尿病护理方面的研究。
  • 基金资助:

    2017年度贵州省教育厅自然科学基金重大群体创新课题(黔教合KY字[2017]042),项目负责人:张春玲

Inhibitory effects of nanosilver sponge with Danhuang powder on Pseudomonas aeruginosa 

Li Tao1, Zhang Chunling2, Long Yi2, Di Tietao2, Chen Lu2, Zhao Wei2, Long Li1, Huang Qiang1, Tang Lisha1, Luo Kaizhong1
  

  1. 1Guizhou University of Traditional Chinese Medicine (formerly Guiyang College of Traditional Chinese Medicine), Guiyang 550002, Guizhou Province, China; 2Second Affiliated Hospital of Guizhou University of Traditional Chinese Medicine (formerly Guiyang College of Traditional Chinese Medicine), Guiyang 550003, Guizhou Province, China
  • Received:2019-03-29
  • Contact: Zhang Chunling, Chief nurse, Master’s supervisor, Second Affiliated Hospital of Guizhou University of Traditional Chinese Medicine (formerly Guiyang College of Traditional Chinese Medicine), Guiyang 550003, Guizhou Province, China
  • About author:Li Tao, Master candidate, Guizhou University of Traditional Chinese Medicine (formerly Guiyang College of Traditional Chinese Medicine), Guiyang?550002, Guizhou Province, China
  • Supported by:

    The Natural Science Foundation of Guizhou Provincial Department of Education for Major Group Innovation Project in 2017, No. qianjiaohe-KY-[2017]042 (to ZCL)

摘要:

文章快速阅读:

 

文题释义:
丹银海绵:是将丹黄散与纳米银材料进行有机结合而成,使其不仅具有丹黄散镇痛、活血、除痹、生肌等促糖尿足溃疡愈合之功效,还具有纳米银对铜绿假单胞菌的良好抑菌作用,且不产生耐药性,可直接外敷于溃疡面,为临床治疗糖尿病足溃疡提供了新的思路与方法。
铜绿假单胞菌:是糖尿病足溃疡感染的常见革兰阴性杆菌,有研究显示发生铜绿假单胞菌感染的糖尿病足溃疡愈合率较未感染者愈合率明显降低,且铜绿假单胞菌的耐药性呈逐年上升趋势,因此为临床治疗铜绿假单胞菌感染的糖尿病足溃疡提供一种疗效佳且不产生耐药性的治疗方法显得尤为重要。
 
 
背景:课题组前期研究发现丹黄散可促进糖尿病足溃疡的愈合,但抑菌性能较差,因此将具有广谱抗菌作用的纳米银与丹黄散有机结合制成了丹黄散-纳米银海绵(以下简称丹银海绵)。
目的:观察丹银海绵对铜绿假单胞菌的抑制效果。
方法:将含纳米银高、中、低浓度(分别含硝酸银22.22%,16.67%,11.11%)的丹银海绵及高、中、低浓度(分别含硝酸银22.22%,16.67%,11.11%)的纳米银海绵裁剪为直径1 cm的圆形规格,均匀分置于涂满铜绿假单胞菌悬液的培养基上;用同规格纸片蘸取亚胺培南-西司他丁水溶液,置于涂满铜绿假单胞菌悬液培养基上,作为阳性对照组;将壳聚糖海绵裁剪为直径1 cm的圆形规格,分置于涂满铜绿假单胞菌悬液的培养基上,作为阴性对照组。各组均置于35 ℃恒温箱培养24 h,观察比较各组抑菌圈的大小。
结果与结论:亚胺培南-西司他丁组对铜绿假单胞菌的抑菌效果优于各浓度纳米银海绵组、各浓度丹银海绵组及壳聚糖海绵组(P < 0.05);各浓度纳米银海绵组和各浓度丹银海绵组的抑菌效果优于壳聚糖海绵组    (P < 0.05);相同硝酸银浓度下,纳米银海绵组和丹银海绵组具有同等的抑菌效果(P > 0.05);不同浓度的纳米银海绵组抑菌效果无差异(P > 0.05);不同浓度的丹银海绵组抑菌效果无差异(P > 0.05);表明丹银海绵对铜绿假单胞菌具有抑制效果,在糖尿病足溃疡治疗中具有独特的优势。

关键词: 丹黄散-纳米银海绵, 丹银海绵, 纳米银海绵, 亚胺培南-西司他丁, 壳聚糖海绵, 纳米银, 铜绿假单胞菌, 抑菌效果, 糖尿病足溃疡

Abstract:

BACKGROUND: Danhuang powder has been recently shown to promote the healing of diabetic foot ulcers, but its antibacterial activity is not satisfactory. Therefore, broad-spectrum antibacterial nanosilver sponge is loaded with Danhuang powder for clinical application. OBJECTIVE: To investigate the antibacterial activity of nanosilver sponge with Danhuang powder against Pseudomonas aeruginosa.
METHODS: Nanosilver sponge with Danhuang powder containing 22.22%, 16.67%, 11.11% silver nitrate (Danhuang-nanosilver group) and simple nanosilver sponge containing 22.22%, 16.67%, 11.11% silver nitrate (simple nanosilver group) were cut into round pieces (1 cm in diameter) and placed on Pseudomonas aeruginosa suspension-spread culture medium. Paper sheets of the same size were dipped in the imipenem-cilastatin aqueous solution (imipenem-cilastatin group) and then also positioned on Pseudomonas aeruginosa suspension-spread culture medium for positive controls. For negative controls, chitosan sponge of the same size was used (chitosan group). All tested materials were cultured in an incubator at 35 °C for 24 hours, and the size of the inhibition zone was compared.
RESULTS AND CONCLUSION: The antibacterial activity against Pseudomonas aeruginosa in the imipenem-cilastatin group was superior to that in the Danhuang-nanosilver, simple nanosilver, chitosan groups (P < 0.05). The antibacterial activity against Pseudomonas aeruginosa in the Danhuang-nanosilver and simple nanosilver groups was superior to those in the chitosan group (P < 0.05). The antibacterial activity against Pseudomonas aeruginosa was similar between Danhuang-nanosilver and simple nanosilver groups at the same concentration of silver nitrate (P > 0.05). There was no significant difference in the antibacterial activity against Pseudomonas aeruginosa between different concentrations of silver nitrate in the simple nanosilver and Danhuang-nanosilver groups (both P > 0.05). These results suggest that nanosilver sponge with Danhuang powder exhibits antibacterial activity against Pseudomonas aeruginosa, showing unique advantages in the treatment of diabetic foot ulcers.

Key words: nanosilver sponge with Danhuang powder, Danhuang-nanosilver sponge, nanosilver sponge, imipenem-cilastatin, chitosan sponge, nanosilver, Pseudomonas aeruginosa, antibacterial effects, diabetic foot ulcers

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