肢体复合皮移植术后中远期病理及电镜结构特征

目的 观察对比肢体正常皮肤与脱细胞异体真皮加自体刃厚头皮复合皮移植术后中远期病理及电镜结构,为复合皮移植远期疗效提供组织学依据.方法 收集2003年3月～2006年8月17例行四肢挛缩瘢痕切除,缺损皮肤创面采用脱细胞异体真皮加自体刃厚头皮复合皮移植修复术后9月～2年的组织标本.取复合皮组织标本23份为观察组,并取患者临近正常皮肤组织标本23份为对照组.分别进行HE染色及扫描电镜观察,观察表皮细胞层数、基底膜厚度、真皮结构成分、成纤维细胞及血管计数等.结果 HE染色:复合皮组织结构完整,具备正常表皮及真皮各种结构成分,基底膜再生完整.复合皮及正常皮肤的表皮细胞层数分别为16.33±5.89和26.57+3.46(P=0.007);基底膜厚度(μm)分别为1.05～0.21和1.13±0.17(P=0.168).扫描电镜观察:复合皮半桥粒、成纤维细胞及再生毛细血管计数与正常皮肤组织十分接近.分别为6.33±2.31和6.79±1.57(P=0.127),7.59±2.06和8.02+9.85(P=0.067),以及14.03+9.60和13.34±3.52(P=0.369).结论 肢体复合皮移植后中远期组织结构接近正常皮肤,移植效果满意.

Histopathology and ultrastructural characteristics of acellular allogenic dermal matrix engrafted with thin split-thickness skin autograft:mid-and long-term results

Objective To observe mid-and long-term changes in the histopathology and electron microscopic characteristics of the acellular dermal matrix engrafted with thin split-thickness skin autograft.Methods Twenty-three biopsy samples were collected from 17 patients undergoing extremity scar resection,who received subsequent grafting using allogenic dermal matrix dressed with thin split-thickness skin autografts.Six months to 2 years after the grafting,the grafts were sampled for histopathological and electron mic...