自体脂肪颗粒及微粒皮混合移植修复烧伤患者深度创面

目的 了解自体脂肪颗粒及微粒皮混合移植修复大面积烧伤深度创面的效果. 方法选择20例重度烧伤患者,采用自身同体对照法,将患者双侧肢体或躯干对称部位创面分为脂肪颗粒+微粒皮组和微粒皮组,分别行自体脂肪颗粒+微粒皮(体积比1:1)混合移植和自体微粒皮移植.术后30、45、60 d计算2组创面愈合率;术后7、14、21、28 d取创面组织,行HE染色和增殖细胞核抗原(PCNA)免疫组织化学观察. 结果移植术后30、45、60 d,脂肪颗粒+微粒皮组创面愈合率分别为(56.3±3.1)%、(76.4±6.1)%、(96.2±1.5)%,均明显高于微粒皮组的(28.3±2.0)%、(47.3±4.8)%、(85.4±2.2)%(P<0.01).HE染色显示脂肪颗粒+微粒皮组创面上皮化早于微粒皮组,胶原纤维排列较整齐.脂肪颗粒+微粒皮组PCNA阳性细胞较微粒皮组多,主要分布于表皮基底层. 结论自体脂肪颗粒+微粒皮混合移植可促进创面愈合.

Clinical study on the repair of extensive deep burn wounds with autogenous fat granules and autologous microskin grafts in mixed grafting

OBJECTIVE: To observe the effects of autologous fat granules in mixed grafting gous microskin grafts on repair of extensive deep burn wounds in patients. METHODS: Twenty patients hospitalized in our ward were enrolled for autogenous self-control test in wounds on both or symmetrical parts of wounds of the trunk, and they were randomly divided into experimental (E) trol (C) groups, the wounds in E group were repaired with autologous fat granules together with microskin in mixed grafting (volume ratio 1 : 1), and in C group only autologous microskin grafting was given. Wound healing rate was measured on 30th, 45th, and 60th day after operation. Wound specimens harvested for HE staining and PCNA immunohistochemistry examination on 7th, 14th, 21st, and after operation. RESULTS: (1) The mean wound healing rate on 30th, 45th, and 60th day after E group was (56.3 +/- 3.1)%, (76.4 +/-6.1)%, (96.2 +/- 1.5)%, which were respectively higher C group (28.3 +/-2.0)%, (47.3 +/-4.8)%, (85.4 +/- 2.2)%, P < 0.01]. HE staining showed epithelization in E group was earlier than that in C group, with regular arrangement of collagen fibers. The quantity NA positive cells in E group were larger than that in C group, and PCNA was mainly expressed cells of basal layer . CONCLUSION: Autologous fat granules in mixed grafting with autologous microskin promote wound healing.