摘要:目的应用Mata分析法评价湿润烧伤膏(MEBO)和血竭粉治疗压疮的效果。方法检索1998年—2007年发表的文献,运用随机对照试验评估表对文献进行评估,用RevMan4.1软件包进行统计分析。结果纳入20篇(1109例患者)随机对照试验文献,按治愈和治愈时间作评价。①治愈效果,MEBO对压疮的治愈效果与对照组比较,OR=7.83,95%可信区间(95%CI):5.14~11.92,差异有统计学意义;血竭粉对压疮的治愈效果与对照组比较,OR=5.68,95%CI:4.11~7.85,差异有统计学意义。②治愈时间:MEBO治愈压疮时间与对照组比较,加权均数差(WMD)为6.32,95%CI:-7.15-5.50;差异有统计学意义。血竭粉治愈压疮时间与对照组比较,WMD为-8.94,95%CI:-12.15-5.72,差异有统计学意义。结论MEBO和血竭粉治疗压疮效果显著,优于其他临床常用药物。
摘要:目的观察局部注射Merkel细胞(Merkel cells,MCs)联合美宝湿润烧伤膏(MEBO)外用对大鼠足底创面神经再生的影响。方法取成年大鼠共90只(210±10)g,于左后足检测缩足反射后垂直切取左足底皮肤直至皮下,形成直径为1 cm圆形创面,保留深筋膜。将建模后大鼠随机分为5组:MCs+MEBO组、MCs组、MEBO组、PBS组及m NGF(鼠神经生长因子)组。细胞组用MCs(1×10~6个/m L)每个点25μL分别注射于创面基底中央及创缘3、6、9、12点标记处;m NGF组及PBS组分别予等体积(每个点25μL)的重组β鼠神经生长因子(0. 1μg/m L)和PBS液注射。造模后所有模型鼠均用棉拭子检测大鼠足底缩足反射,记录并统计缩足次数,计算其百分比;在建模第7、14、21天3个时间点每组随机抽取6只大鼠,切取组织并制作石蜡切片,免疫荧光染色观察新生皮肤神经纤维的生长情况。结果缩足反射对比,MCs+MEBO组比MCs组、MEBO组、PBS组反射阈值更低、对刺激更敏感(P <0. 05),与m NGF组相近;MCs+MEBO组在神经纤维数量、排列有序性等方面都优于阴性对照或单一处理组,与m NGF组相近。结论 MCs局部注射联合MEBO外用可促进创面皮肤神经的再生。
摘要:Introduction:? After partial-thickness skin graft (PTSG) harvesting, a dermal surface is exposed and an iatrogenic wound is created. Application of various agents has been studied for enhancement of healing process in PTSG donor area. The ideal agent should accelerate healing, provide comfort to the patient, not allow infection, and be easily applicable and cheap. Materials and Methods:? The Cochrane Central Register of Controlled Trials, PubMed, Scopus. and EMBASE databases were screened for words (“skin graft” + “donor”), by using time limits between 1989 and 2018. This study involved a total of 5 systematic reviews and 43 original articles which met the inclusion criteria. Articles were reviewed and parameters such as healing time, pain, infection rate, cosmetic result, and cost were extracted. Results:? Systematic reviews favor moist dressing materials over dry ones considering healing time and patient comfort. Hydrocolloids provide rapid wound healing, and dressing changes do not cause any disruption to the newly regenerated epithelium. Alginates seem to have a longer healing time than hydrocolloid materials. Polyurethane films are characterized by rapid epithelialization and painless monitoring as well as low costs. The epithelialization time of MEBO?, a cosmeceutical product, is reported to be faster than polyurethane films. Local and systemic drug applications warrant further research before routine clinical usage. Conclusion:? Dressing materials are the most commonly used and appropriate group according to the studies performed to date. It is seen that moist dressing materials are more favorable. Although there is not a subgroup with a clear superiority, it can be seen that the hydrofiber and polyurethane film groups are one step ahead in terms of ease of use, patient comfort, epithelialization speed, and scar quality. Polyurethane films have a cost advantage to the hydrofiber group.
摘要:目的:观察烧伤湿性医疗技术/美宝湿润烧伤膏(MEBT/MEBO)对大鼠深Ⅱ度烧伤创面的细胞、毛细血管形态结构的变化,探讨其改善深Ⅱ度烧伤创面进行性加深的作用机制。方法:SD大鼠20只,背部两侧造成40个对称性圆环形深Ⅱ度烧伤创面,每个创面中央留有一个同心圆岛状区(淤滞区),随机自身对照,治疗组侧使用MEBT/MEBO进行治疗,每6小时换药一次,对照组侧不用任何措施。动态观察烧伤大鼠于伤后2h、6h、8h、12h、24h、72h共6个时相点的创面的病理切片观察皮肤组织形态结构变化和淤滞区切片进行组织病理学评分。结果:①创面细胞形态学改变(病理检查):伤后8h毛细血管扩张、细胞水肿,炎性浸润最明显;治疗组中央淤滞区无进行性坏死,伤后24h后毛细血管扩张、细胞水肿、炎性浸润减轻;对照组2个创面呈进行性坏死(占10%),中央淤滞区细胞水肿、炎性浸润明显,毛细血管血栓形成,伤后72h水肿仍明显,真皮坏死加重;②淤滞区组织病理学评分:治疗组与对照组相比,治疗侧淤滞区的表皮结构相对完整、胶原纤维束相对正常,粒细胞浸润小于5个/400倍视野。结论:MEBT/MEBO能防止大鼠深Ⅱ度烧伤创面进行性加深,促进烧伤后的创面愈合,其作用机制为MEBT/MEBO能使创面局部毛细血管扩张、细胞水肿、炎性浸润减轻,防止微血栓生成,有效改善创面局部的微环境,挽救间生态组织。