粒细胞一巨噬细胞集落刺激因子对大鼠深Ⅱ度烫伤创面血管生成素-1表达的影响  

Influence of granulocyte macrophagecolony stimulating factor on the expression of angiopoietin-1 in deep partial thickness burn wound in rats

作　　者：赵菁玲[1] 徐盈斌[1] 唐锦明[1] 舒斌[1] 薛亮[1] 谢举临[1] 祁少海[1] 刘旭盛[1] 

机构地区：[1]中山大学附属第一医院烧伤外科,广州510080

出　　处：《中华实验外科杂志》2013年第4期697-700,共4页Chinese Journal of Experimental Surgery

基　　金：国家自然科学基金青年基金资助项目（81000839）;创伤、烧伤与复合伤国家重点实验室开放基金资助项目（SKLKF200808）

摘　　要：目的观察粒细胞-巨噬细胞集落刺激因子（GM-CSF）对大鼠深Ⅱ度烫伤创面愈合过程中血管生成素-1（Ang-1）表达的影响。方法建立SD大鼠深Ⅱ度烫伤模型,按自身对照的方法将创面随机分为GM-CSF实验组和对照组。分别取伤后1、3、7、14、21 d创面皮肤组织，采用实时荧光定量逆转录-聚合酶链反应（FQ-PCR）分析Ang-1的mRNA表达;免疫组织化学法和Western blot法检测创面Ang-1蛋白的表达;免疫组织化学法检测创面CD31的表达，计算微血管密度（MVD）。结果仓插Ang-1的mRNA表达量于伤后1、3 d呈下降趋势，实验组（1. 44 ± 0. 20、0. 30 ± 0. 17）低于对照组（2. 36 ±0. 18、1. 34±0.24）（P〈0.05）；之后其表达量逐渐升高，伤后7、14、21 d实验组（4. 52＋0.21,8.47 ＋0. 14、7. 52 ±0. 20）均明显高于对照组（2. 71 ±0. 12,3. 69 ±0.24,3.07 ±0. 17）（p〈0.05）。实验组创面Ang-1的蛋白表达量于伤后1、3 d可见显著下降（0.491 ±0.055、0. 181 ±0. 025），与对照组（0. 735 ± 0. 080、0. 436 ± 0. 071）比较明显降低（P 〈 0. 05）;之后其表达量持续升高，至伤后 14 d 达峰值，实验组（0.821 ±0.060,1.257 ± 0.225,1. 126 ± 0. 131）较对照组（0. 701 ±0.078,0.825 ±0.072,0. 733 ± 0. 073）明显增高（P 〈 0. 05）。；实验组创面于伤后第3天起见较多CD31 阳性血管并逐渐增多，MVD 值在伤后 3、7、14、21 d（9. 5 ± 1.8、3. 4 ± 2. 9、38. 4 ± 3. 1、24. 6 ±2.5）均明显高于对照组（4.0 ± 1.9,10.5 ±2.0,22.9 ±2.7,15. 1 4 2.6,P〈0.05）. 结论 GM-CSF降低Ang-1在烧伤创面愈合早期的表达,有利于创面血管新生;促进Ang-1在愈合中、后期表达，利于创面血管成熟，加快创面愈合。Objective To investigate the influence of granulocyte macrophage colony stimulatingfactor （ GM-CSF） on the expression of angiopoietin-1 （Ang-1） in deep partial thickness bum wound in 1rats. Methods The models of deep partial thickness bum wounds on the back in Spregue-Dawley （ SD）rats were established. The paired wounds on the same rats were randomly divided into GM-CSF treatment（test） and control groups by self-control. Tissue samples were harvested from the wounds on the 1st,3rd,7th, 14th and 21st day respectively after bums. The mRNA expression of Ang-1 was detected by using re-al-time reverse transcriptase-polymerase chain reaction （ FQ-PCR） . And the protein expression of Ang-1was detected by immunohistochemical and western blot, the protein expression of CD31 by using immuno-histochemical staining,and the microvascular density was calculated. Results The mRNA expression levelof Ang-1 in the bum wounds was decreased slightly on the 1st and 3rd postbum days and that in test group（1. 44 ±0. 20,0. 30 ± 0. 17 ） was lower than that in control group （2. 36 ± 0. 18 , 1. 34 ± 0. 24） （P 〈0.05）. Then the Ang-1 mRNA expression was gradually increased on the 7 th and 14 th postbum days anddecreased slightly on the 21st postbum day, and the expression level in the test group at the above timepoints （4. 52 ±0. 21,8. 47 ±0. 14, 7. 52 ±0. 20） was higher than that in control group （2. 71 ±0. 12,3.69 ±0. 24,3. 07 ±0. 17）（p 〈0. 05）. The protein expression of Ang-1 was declined remarkably on the 1stand 3rd postburn days, which in test group （0. 491 ±0. 055, 0. 181 ±0. 025） was lower than that in control group （0. 735 ± O. 080, O. 436 ± 0. 071 ） （ P 〈 O. 05 ）. Then the Ang-1 protein expression was gradually in- creased and reached the peak on the 14th postburn day and the expression in the test group （0. 821 ±0. 060, 1. 257 ± 0. 225, 1. 126 ±0. 131 ） was higher than that in the control group （0. 701 ± 0. 078, 0. 825 ± 0. 072, 0. 733 ±0. 073 �

关 键 词：粒细胞-巨噬细胞集落刺激因子 血管生成素 烧伤 创面愈合 

分 类 号：R6[医药卫生—外科学]