摘要：This study explored the effects of Moist Exposed Burn Ointment (MEBO) on the healing process of pressure-induced wounds. Using a stage IV pressure ulcer model established in 42 rats, divided equally into a control gel group and an MEBO group, we investigated the efficacy of MEBO through topical application. The control group received Carbomer gel, while the MEBO group was treated with MEBO until complete wound healing. Results showed that MEBO significantly accelerated wound healing compared to the control group. Histological analysis, including hematoxylin and eosin (HE) staining and Masson’s trichrome staining, revealed enhanced epithelialization and collagen deposition in the MEBO group. Furthermore, 16S rRNA sequencing indicated that MEBO reduced microbial diversity at the wound site and reshaped the microbial composition. Notably, The increased abundance of Acinetobacter and Staphylococcus, coupled with a reduction in Pseudomonas, may reflect a shift in the wound microbiome that could be conducive to healing. However, the exact role of these microbial shifts in promoting wound healing requires further investigation, as microbial dynamics in wound environments are complex and context-dependent. These findings suggest that MEBO facilitates wound healing by optimizing the wound microbiome, thereby offering a promising therapeutic approach for managing pressure ulcers.
摘要：研究背景和目的糖尿病创面是糖尿病常见并发症,具有病程长、易复发等特点,给患者带来极大困扰,探寻其病理机制及治疗具有重要意义。巨噬细胞和成纤维细胞是创面中的重要效应细胞。现发现ADAM-10调控细胞粘附、生长、迁移等过程。但ADAM-10在糖尿病创面中的具体机制尚不明确。本研究探究ADAM-10在巨噬细胞、成纤维细胞中的调控作用;及其在糖尿病创面愈合过程中的作用机制;结合药物治疗创面,验证研究结果。研究方法1.临床上筛选慢性难愈合创面,随机分组:湿润暴露疗法/湿润烧伤膏(MM)组、重组牛碱性成纤维细胞生长因子凝胶(rb-b FGF)组。在治疗第3、10天,取肉芽及少量上皮组织,免疫荧光(IF)染色ADAM-10、MMP-12,观察蛋白变化特点。2.对sh ADAM-10 RAW264.7细胞进行蛋白组学分析,筛选差异蛋白,并进行生物信息学分析。3.对RAW264.7和J774a.1细胞,进行sh ADAM-10(sh)或EX ADAM-10(EX)干预,随后给予脂多糖(LPS)或MMP-12抑制剂+LPS(MMP-12inh+LPS)刺激,检测细胞活力、基因转录、蛋白表达等情况。4.对L929成纤维细胞进行EX干预,随后LPS刺激,观察细胞活力、ADAM-10以及其它蛋白表达水平。5.正常、糖尿病大鼠分别制备创面,分组为急性(Acute)组、模型(Model)组、MM组以及rb-b FGF组。观察第3、7、10、14天的创面情况;创面率;病理结构;亚细胞结构;ADAM-10转录水平;蛋白表达及定位情况。结果1.慢性难愈合创面治疗第3天,MM组内ADAM-10、MMP-12表达均低于rb-b FGF组。相较于治疗第3天,第10天ADAM-10表达增加;MMP-12降低;MM增加ADAM-10作用低于rb-b FGF;rb-b FGF降低MMP-12作用明显。2.sh RAW264.7细胞蛋白组学检测结果显示:干扰ADAM-10影响创面愈合相关的多种生物学过程,并导致MMP-12和AKT降低。3.巨噬细胞中(1)对较于CON组,1000ng/ml的LPS作用9 h～24 h增加细胞活力(P<0.05);1.5μmol/L的MMP-12inh作用12 h～36 h对细胞活力无影响(P>0.05)。LPS作用12 h显著降低ADAM-10、增加MMP-12基因转录水平(P<0.01);LPS增加MMP-12、i NOS、T...
摘要：目的评价金因肽(AC)液联合使用超薄型美皮康处理放射性湿性皮炎的疗效,为临床治疗提供参考依据。方法将86例放射性湿性皮炎患者随机分为观察组与对照组,各43例。对照组给予美宝湿润烧伤膏进行治疗,观察组给予AC液联合超薄型美皮康进行治疗,比较两组患者的治疗效果。结果观察组治疗总有效率为95.35%,对照组为79.07%,两组总有效率比较差异有统计学意义(P<0.05);观察组平均愈合时间及中位愈合时间为(6.76±0.77)d和6.00 d,均低于对照组,两组比较差异有统计学意义(P<0.05);观察组生活质量各部分得分均低于对照组,两组比较差异有统计学意义(P<0.05)。结论 AC液联合超薄型美皮康治疗放射性湿性皮炎效果显著,安全性高,缩短了创面愈合的时间,提高了患者的生活质量,值得临床推广应用。