摘要
目的观察紫草素对大鼠随意型皮瓣的干预作用并探讨其可能的机制。方法取72只健康清洁级Wistar大鼠随机数字表法平均分为对照组、川芎嗪组和紫草素实验组。在大鼠背部设计蒂在头侧的随意型皮瓣,各组相应给药:紫草素实验组(1mg/kg),川芎嗪组(10mg/kg),对照组(给予等剂量溶剂,1ml/kg),每日1次腹腔注射,连续7d。HE染色观察皮瓣组织形态学变化;免疫荧光组织化学染色分析术后皮瓣组织中诱导型一氧化氮合酶(induciblenitricoxidesynthase,iNOS)和环氧合酶-2(cyclooxygenase-2,COX-2)的表达;ELISA法检测血清肿瘤坏死因子-α(tumornecrosisfactor-α,TNF-α)和白细胞介素-6(Interleukin-6,IL-6)的含量。结果术后对照组大鼠皮瓣炎细胞浸润明显,紫草素组和川芎嗪组炎细胞水平显著降低,与对照组比较差异有统计学意义(P<0.01),紫草素组炎细胞降低更为明显;术后7d,对照组大鼠皮瓣成活率(37.21±5.58)%,川芎嗪组(63.86±5.78)%,紫草素组(66.36±8.04)%,紫草素组与川芎嗪组皮瓣的成活率显著提高,与对照组相比差异有统计学意义(P<0.01);术后紫草素组和川芎嗪组iNOS和COX-2的表达显著低于对照组,差异有统计学意义(P<0.01);术后早期紫草素组iNOS和COX-2的表达明显降低,与川芎嗪组比较差异有统计学意义(P<0.01,P<0.05);紫草素组和川芎嗪组大鼠术后血清TNF-α和IL-6水平显著降低,与对照组比较差异有统计学意义(P<0.01),紫草素组降低更为显著。结论紫草素可显著改善大鼠皮瓣的炎性反应,其机制与抑制iNOS和COX-2炎性分子表达、降低血清TNF-α和IL-6含量、减少炎性因子释放有关。
Objective To investigate the effects and the potential mechanism of shikonin on rat random flaps. Methods Seventy-two wistar male rats in grade SPF were randomly divided into negative control group, tetramethylpyrazine group (TMP group) or shikonin treatment group. The random skin flap sized 8 cm×2 cm, with a cephalic based pedicle, was performed on the back of the rat. Each group was administered accordingly by intraperitoneal injection once per day for 7 days: shikonin treatment group (1 mg/kg), TMP group (10 mg/kg) and control group (1 ml/kg). Morphological changes of skin flaps were observed by HE staining. The positive expression of iNOS and COX-2 in skin flap tissues after operation were detected by immunofluorescence staining. The serum contents of TNF-α and IL-6 were detected by ELISA. Results Inflammatory cell infiltration and inflammatory reaction of flap was more severe in control group at different time points after operation. The number of inflammatory cells in shikonin treatment group and TMP group were significantly decreased, compared with controls (P<0.01). The decrease of the inflammatory cell numbers in shikonin treatment group was more significant. The proliferation of granulation tissue and fibroblast in skin flap was obvious, and the survival rates of the skin flap were significantly increased in shikonin treatment group and TMP group (both P<0.01). The numbers of iNOS or COX-2 positive cells in shikonin treatment group and TMP group were significantly decreased, when compared with controls (both P<0.01). Compared with TMP group, the numbers of iNOS and COX-2 positive cells in shikonin treatment group were significantly decreased (P<0.01 and P<0.05, respectively)in early period after operation. Compared with the control group, serum levels of TNF-α and IL-6 in shikonin treatment group and TMP group were significantly decreased (all P<0.01). The shikonin treatment group developed more significant reduce. Conclusions Shikonin can significantly improve inflammatory response of skin flap in r
作者
邢雁霞
刘斌焰
赵一锦
王佳
李婷
刘斌钰
王亚荣
Xing Yanxia;Liu Binyan;Zhao Yijin;Wang Jia;Li Ting;Liu Binyu;Wang Yarong(Department of Biochemistry, Medical College, Shanxi Datong University, Datong 037009, China;Respiratory and Occupational Disease Research Institute, Shanxi Datong University, Datong 037009,China;Department of Burn and Plastic Surgery, The Third People's Hospital of Datong, Datong 037008,China)
出处
《中华整形外科杂志》
CAS
CSCD
北大核心
2019年第3期289-295,共7页
Chinese Journal of Plastic Surgery
基金
山西省大同市科技公关项目(2015098).
