负载富血小板血浆的水凝胶促进糖尿病大鼠创面愈合  

Hydrogel loaded with platelet-rich plasma promotes wound healing in diabetic rats

作　　者：张娅 牟秋菊 王自林 刘宏杰 祝丽丽 Zhang Ya;Mu Qiuju;Wang Zilin;Liu Hongjie;Zhu Lili(Teaching and Research Department of Clinical Laboratory Fundamentals and Hematology,School of Medical Laboratory,Guizhou Medical University,Guiyang 550000,Guizhou Province,China;Department of Blood Transfusion,Affiliated Hospital of Guizhou Medical University,Guiyang 550000,Guizhou Province,China)

机构地区：[1]贵州医科大学医学检验学院临床检验基础与血液学检验教研室,贵州省贵阳市550000 [2]贵州医科大学附属医院输血科,贵州省贵阳市550000

出　　处：《中国组织工程研究》2024年第5期690-696,共7页Chinese Journal of Tissue Engineering Research

基　　金：贵州省卫健委项目(gzwkj2021-366),项目负责人:祝丽丽;贵阳市科技局项目筑科合([2018]1-75),项目负责人:祝丽丽。

摘　　要：背景:糖尿病创面存在感染、缺血、周围神经病变、血管病变等复杂情况,结构功能单一的普通水凝胶敷料不能满足糖尿病创面愈合的需求。目的:探讨负载富血小板血浆的水凝胶修复糖尿病大鼠皮肤全厚层缺损创面的效果。方法:抽取SD大鼠血液,制备富血小板血浆;分别制备单纯的羧甲基壳聚糖/氧化硫酸软骨素水凝胶与负载富血小板血浆的羧甲基壳聚糖/氧化硫酸软骨素水凝胶。取成年雄性SD大鼠,腹腔注射链脲佐菌素诱导糖尿病模型。造模成功后,在糖尿病大鼠背部制作直径为2 cm的圆形全厚层皮肤缺损创面,采用随机数字表法分为4组干预,每组10只:空白组创面贴敷纱布,水凝胶组、富血小板血浆组和复合水凝胶组创面分别贴敷单纯的水凝胶、富血小板血浆和负载富血小板血浆的水凝胶,治疗20 d内观察创面愈合情况。结果与结论:①治疗后第20天,水凝胶组、富血小板血浆组和复合水凝胶组创面愈合率高于空白组(P<0.05),复合水凝胶组创面愈合率高于富血小板血浆组(P<0.05);②治疗后第5天的苏木精-伊红染色显示,与空白组、水凝胶组和富血小板血浆组相比,复合水凝胶组创面组织中有大量的炎细胞浸润、新生肉芽组织及毛细血管生成;③治疗后第5天的免疫组化染色及Western blot检测结果显示,复合水凝胶组创面组织中的肿瘤坏死因子α和白细胞介素1β蛋白表达低于空白组、水凝胶组和富血小板血浆组(P<0.05);④Masson染色显示,治疗后第15天,与空白组、水凝胶组和富血小板血浆组相比,复合水凝胶组创面组织中胶原纤维更多,排列整齐、分布均匀致密;⑤CD31免疫荧光染色显示,治疗后第15天,复合水凝胶组创面组织中的CD31表达高于空白组、水凝胶组和富血小板血浆组(P<0.05);⑥结果显示,负载富血小板血浆的复合水凝胶能够通过促进肉芽组织生成、胶原纤维合成、血�BACKGROUND:Diabetic wounds have complicated conditions such as infection,ischemia,peripheral neuropathy,and vascular disease.Ordinary hydrogel dressings with single structure and function cannot meet the needs of diabetic wound healing.OBJECTIVE:To explore the effect of a hydrogel loaded with platelet-rich plasma on wound healing of full-thickness skin defects in diabetic rats.METHODS:The blood of SD rats was extracted to prepare platelet-rich plasma.Carboxymethyl chitosan/oxychondroitin sulfate hydrogel and carboxymethyl chitosan/oxychondroitin sulfate hydrogel loaded with platelet-rich plasma were prepared separately.Streptozotocin was used to induce diabetes model in adult male SD rats.A round full-thickness skin wound with a diameter of 2 cm was made on the back of diabetic rats.The rats were randomly divided into four groups(n=10 per group).The blank group was applied with gauze on the wound.The hydrogel group,platelet-rich plasma group,and composite hydrogel group were respectively applied with the corresponding hydrogel,platelet-rich plasma and hydrogel loaded with platelet-rich plasma.The wound healing was observed within 20 days after treatment.RESULTS AND CONCLUSION:(1)On day 20 after treatment,the wound healing rate of the hydrogel group,platelet-rich plasma group and composite hydrogel group was significantly higher than that of the blank group(P<0.05).The wound healing rate of the composite hydrogel group was significantly higher than that of the platelet-rich plasma group(P<0.05).(2)The results of hematoxylin-eosin staining on day 5 after treatment showed that compared with the blank group,hydrogel group and platelet-rich plasma group,there were a large number of inflammatory cell infiltration,new granulation tissue and capillary formation in the wound tissue of the composite hydrogel group.(3)On day 5 after treatment,the results of immunohistochemical staining and western blot assay showed that the expression levels of tumor necrosis factorαand interleukin 1βin wound tissue in the composite hydro

关 键 词：糖尿病创面 水凝胶 富血小板血浆 创面愈合 炎症 血管生成 

分 类 号：R459.9[医药卫生—治疗学] R318[医药卫生—临床医学] R641