红花黄色素对糖尿病小鼠足溃疡创面愈合的影响及机制  

Effect and mechanism of safflower yellow on wound healing of diabetic foot ulcers in mice

作　　者：张杰 刘自新[1] 贾炳学 张爱新[1] 张卓 ZHANG Jie;LIU Zixin;JIA Bingxue;ZHANG Aixin;ZHANG Zhuo(Department of Emergency,Beijing Pinggu Hospital,Beijing 101200,China)

机构地区：[1]北京市平谷区医院急诊科,北京101200

出　　处：《新乡医学院学报》2024年第5期412-418,共7页Journal of Xinxiang Medical University

摘　　要：目的探讨红花黄色素(SY)对糖尿病小鼠足溃疡(DFU)创面愈合的影响及分子机制。方法取45只C57BL/6小鼠腹腔注射链脲佐菌素建立糖尿病模型。将糖尿病小鼠随机分为假手术组、模型组、低剂量SY干预组、高剂量SY干预组及高剂量SY联合胰岛素样生长因子-1(IGF-1)组,每组9只。DFU模型制备前,模型组小鼠不给予干预处理,低剂量SY干预组和高剂量SY干预组分别腹腔注射5、20 mg·kg^(-1)SY,高剂量SY联合IGF-1组腹腔注射20 mg·kg^(-1)SY和0.03 mg·kg^(-1)IGF-1。除假手术组外,其余4组小鼠通过切开足背部皮肤制备DFU模型;假手术组不制作足背部皮肤伤口,余手术步骤与模型组一致。于造模后第14天,用电子秤测量各组小鼠的体质量,采集尾静脉血测定空腹血糖,并使用小型游标卡尺测量创面宽度,然后处死小鼠收集创面组织,采用苏木精-伊红染色检测各组小鼠创面组织病理学变化,反转录-实时荧光定量聚合酶链反应检测各组小鼠创面组织中血小板衍生生长因子(PDGF)、血管内皮生长因子(VEGF)、α-平滑肌肌动蛋白(α-SMA)和I型胶原蛋白(collagen I)、蛋白酪氨酸磷酸酶1B(PTP1B)、晚期糖基化终产物(AGEs)mRNA的相对表达量,蛋白质印迹法检测各组小鼠创面组织中增殖标志物Ki-67、增殖细胞核抗原(PCNA)、凋亡相关蛋白(caspase-3、caspase-6、caspase-7)、p85磷脂酰肌醇-3-激酶(PI3K)和磷酸化蛋白激酶B(p-AKT)蛋白的相对表达量,酶联免疫吸附试验检测各组小鼠创面组织中肿瘤坏死因子-α(TNF-α)、白细胞介素(IL)-1β及IL-6水平。结果假手术组、模型组、低剂量SY干预组、高剂量SY干预组及高剂量SY联合IGF-1组小鼠血糖和体质量比较差异均无统计学意义(P>0.05)。高剂量SY干预组小鼠创面组织愈合率显著大于模型组、低剂量SY干预组及高剂量SY联合IGF-1组(P<0.01)。模型组、低剂量SY干预组及高剂量SY联合IGF-1组创面组织愈合率�Objective To investigate the effect and molecular mechanism of safflower yellow(SY)on wound healing of diabetic foot ulcer(DFU)in mice.Methods Forty-five C57BL/6 mice were injected intraperitoneally with streptozotocin to establish diabetic models.The diabetic mice were randomly divided into the sham operation group,model group,low-dose SY intervention group,high-dose SY intervention group,and high-dose SY combined with insulin-like growth factor-1(IGF-1)group,with 9 mice in each group.Before modelling,mice in the model group were not given any intervention,mice in the low-dose SY intervention group and high-dose SY intervention group were injected intraperitoneally with 5 and 20 mg·kg^(-1)SY,respectively,and mice in the high-dose SY combined with IGF-1 group were injected intraperitoneally with 20 mg·kg^(-1)SY and 0.03 mg·kg^(-1)IGF-1.Except for the sham operation group,the DFU model was established by incising the dorsal skin of the foot in the remaining four groups of mice.No wound on the dorsal skin of the foot was made in the sham operation group,and the remaining surgical steps were the same as those in the model group.The body mass of mice in each group was measured on day 14 after modelling using an electronic scale,tail vein blood was collected for fasting blood glucose measurement,and the wound width was measured using a small vernier caliper.Then,the mice were executed to collect the wound tissues.Hematoxylin-eosin staining was used to detect the histopathological changes in the wound tissues of mice in each group.Reverse transcription-quantitative real-time polymerase chain reaction was used to measure the relative expression levels of platelet-derived growth factor(PDGF),vascular endothelial growth factor(VEGF),alpha-smooth muscle actin(α-SMA),type I collagen(collagen I),protein tyrosine phosphatase 1B(PTP1B)and advanced glycation end products(AGEs)mRNA in the wound tissues of mice in each group.Western blot was used to detect the relative expression levels of proliferation marker Ki-67,prolifera

关 键 词：红花黄色素 糖尿病足溃疡 创面愈合 血管生成 磷脂酰肌醇-3-激酶/蛋白激酶B通路 

分 类 号：R587.1[医药卫生—内分泌]