摘要：目的:本研究将从环鸟苷酸腺苷酸合成酶-干扰素基因刺激因子(Cyclic guanine nucleotide adenine nucleotide synthetase-Stimulator of interferon genes,cGAS-STING)通路入手,明确湿润暴露疗法/湿润烧伤膏(Moist exposed burn therapy/Moist exposed burn ointment,MEBT/MEBO)能否通过调控cGAS-STING信号通路减轻创面组织炎症反应状态,从而加快糖尿病创面修复的进程,为之后的临床治疗和科学研究提供可靠的参考数据。方法:1.通过网络药理学数据库筛选出MEBT/MEBO治疗糖尿病创面的活性成分和关键靶点,并对其进行京都基因和基因组百科全书(Kyoto Encyclopedia of Genes and Genomes,KEGG)和基因本体(Gene Ontology,GO)富集分析和蛋白质相互作用网络(Protein-protein interaction,PPI)分析,对活性成分和关键靶点进行分子对接验证其结合能力。2.动物实验验证:(1)选取48只Wistar雄性大鼠随机分为4组:空白组、MEBO组、贝复新组、对照组,其中空白组构建正常大鼠急性创面模型,MEBO组、贝复新组和对照组构建糖尿病大鼠创面模型。(2)通过HE染色观察各组大鼠造模后第3、7、14天创面愈合情况、组织形态学变化。(3)采用Western Blot、Real-time qPCR检测cGAS-STING通路相关蛋白表达变化差异及mRNA转录水平差异。结果:(1)通过网络药理学方法筛选出77个湿润烧伤膏和糖尿病创面的交集靶点,显示刺槐素、汉黄芩素、槲皮素、吴茱萸次碱等为湿润烧伤膏核心活性成分,对交集靶点进行PPI网络分析筛选出TP53、TNF、HSP90AA1等关键靶点,KEGG富集分析结果显示TNF、PI3K-Akt、AGE-RAGE信号通路在湿润烧伤膏对糖尿病创面的治疗中起到重要作用,GO富集分析结果显示这些交集靶点的生物过程主要涉及炎症反应调节和血管新生过程。我们进一步对核心活性成分和关键靶点进行分子对接,结果显示均具有较强结合活性。(2)创面愈合情况:造模后第3天,各组之间的创面愈合率无明显差异(P>0.05);造模后第7、14天,与对照组相比,空白组、MEBO组和贝复新组的创面愈合...
摘要：目的 探讨重组人酸性成纤维细胞生长因子(rh-aFGF)结合纳米银敷料与美宝湿润烧伤膏在烧伤创面削痂术后的作用。方法 选取2019年9月—2021年7月南阳南石医院深Ⅱ度烧伤患者70例，随机分为观察组与对照组，每组各35例患者，所有患者均在伤后48 h内进行削痂手术，术后对照组给予纳米银敷料与美宝湿润烧伤膏，观察组给予rh-aFGF结合纳米银敷料与美宝湿润烧伤膏，比较两组创面愈合情况、创面细菌阳性率、创面肉芽与上皮生长情况、瘢痕情况[温哥华瘢痕量表(VSS)评分]、血清炎性因子[白细胞介素-2/-6/-10(IL-2/6/10)、肿瘤坏死因子-α(TNF-α)]以及创面组织指标[血管内皮生长因子(VEGF)、转化生长因子-β1(TGF-β1)]表达水平。结果 观察组术后1周、2周、3周时创面愈合率高于对照组(P<0.05);术后1周，观察组创面细菌阳性率14.29%低于对照组37.14%(P<0.05);观察组术后1周、2周、3周时创面肉芽与上皮生长情况优于对照组(P<0.05);观察组术后3个月瘢痕VSS评分中血管分布、颜色、厚度、柔软度维度评分均低于对照组(P<0.05);两组术后1周血清IL-6、TNF-α、IL-2、IL-10水平比较(P>0.05);观察组术后1周创面组织VEGF mRNA、TGF-β1 mRNA表达水平高于对照组(P<0.05)。结论 rh-aFGF结合纳米银敷料与美宝湿润烧伤膏有利于加快烧伤创面削痂术后创面愈合进程，促进创面肉芽与上皮生长，减少瘢痕形成，提高细菌清除率，调节创面VEGF、TGF-β1表达，促进组织修复。
摘要：目的:慢性难愈合创面是临床中常见的病种之一,但在治疗上缺乏有效的手段干预,越来越多的研究将慢性难愈合创面的治疗靶向转变为促进创面血管新生,探究MEBT/MEBO在促进血管新生过程的作用机制,为临床推广和应用MEBT/MEBO治疗慢性难愈合创面提供理论依据和参考价值;方法:应用付小兵及沈道修相结合的造模方法,分组为空白组、急性创面组、慢性难愈合创面组、贝复济组、MEBT/MEBO组,采用Image J软件、Western Blot、RT-PCR等方法,从宏观到微观观察PTEN-Akt-VEGF信号通路在各组中的动态变化;结果:MEBT/MEBO能够通过调控PTEN-Akt-VEGF信号通路,促进VEGF表达及其mRNA的转录,促进创面血管新生,提高创面愈合率。结论:(1)血管新生是创面修复的一个重要过程,上调VEGF的表达可加速血管新生,并以此促进创面愈合;(2)MEBT/MEBO在慢性难愈合创面的治疗中是安全、高效的治疗手段,可通过调控PTEN-Akt-VEGF信号通路,促进创面血管新生,达到创面愈合的效果。
摘要：Moist exposed burn ointment (MEBO) is becoming increasingly popular in China as it shortens wound?healing time and reduces scar formation. However, its exact mechanism in mediating the wound?healing process is not yet clear. In the present study a total of 90?healthy adult male Wistar rats of specific-pathogen-free grade were divided equally into a control group, wound group, MEBO group, recombinant bovine basic fibroblast growth factor (rb?bFGF) group and sham operation group. Wound healing was observed from the extracted granulation tissues and recorded at three time points on 3, 7 and 14?days. Different levels of tumor necrosis factor?α (TNF?α) and interleukin?6 (IL?6) in tissue homogenate were detected using ELISA. Western blot analysis and quantitative PCR were used to detect the expression of nerve growth factor (NGF), substance P (SP) as?well?as tyrosine kinase?A (TrkA) receptor protein and the corresponding mRNA levels in granulation tissue. It was observed that the wound healing progressed faster in the MEBO and rb?bFGF groups compared with the wound group (P<0.01). TNF?α and IL?6 had an upward?downward trend at three time points, with the wound group demonstrating the most obvious increase (P<0.01). NGF and SP mRNA and protein levels in granulation tissue in MEBO, rb?bFGF and sham operation groups reached their highest levels on day?7 and then decreased on day?14. The expression level of TrkA was also measured simultaneously and its expression pattern was similar to that of NGF and SP. These results suggested that MEBO may promote nerve repair and accelerate wound healing through mediating the expression levels of NGF and SP, as?well?as TrkA.