Use of autologous tissue engineered skin to treat porcine full-thickness skin defects

来源 :中华创伤杂志英文版 | 被引量 : 0次 | 上传用户:WOAILANTIAN112358
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Objective: To explore a feasible method to repair full-thickness skin defects utilizing tissue engineered techniques. Methods: The Changfeng hybrid swines were used and the skin specimens were cut from the posterior limb girdle region, from which the keratinocytes and fibroblasts were isolated and harvested by trypsin, EDTA, and type II collagenase. The cells were seeded in Petri dishes for primary culture. When the cells were in logarithmic growth phase, they were treated with trypsin to separate them from the floor of the tissue culture dishes. A biodegradable material, Pluronic F-127, was prefabricated and mixed with these cells, and then the cell-Pluronic compounds were seeded evenly into a polyglycolic acid (PGA). Then the constructs were replanted to the autologous animals to repair the full-thickness skin defects. Histology and immunohistochemistry of the neotissue were observed in 1, 2, 4, and 8 postoperative weeks. Results: The cell-Pluronic F-127-PGA compounds repaired autologous full-thickness skin defects 1 week after implantation. Histologically, the tissue engineered skin was similar to the normal skin with stratified epidermis overlying a moderately thick collageneous dermis. Three of the structural proteins in the epidermal basement membrane zone, type IV collagen, laminin, and type VII collagen were detected using immunohistochemical methods. Conclusions: By studying the histology and immunohistochemistry of the neotissue, the bioengineered skin graft holds great promise for improving healing of the skin defects.
其他文献
期刊
Introduction: Superior semicircular canal dehiscence(SCD) remains difficult to diagnose despite advances in high-resolution computed tomography(HRCT) imaging. W
期刊
本文通过测量采用PPTC器件的ADSL设备的传输性能,证实了PPTC电路保护器件对ADSL设备性能发挥的效力.
Objective: To evaluate the effect of laparoscopic spleen-preserving operation for traumatic spleen rupture. Methods: From 1997 to 2003, 15 cases of traumatic sp
“丰田86是近年来为数不多的,并且可玩性极高的日系性能车型之一。这么说的原因并不是忽略了其他日系性能车型的存在,而是丰田86作为一款标准规格的跑车,其售价仅相当于一辆普通的中高级轿车。对于大多数日系跑车的粉丝来说,丰田86使他们的梦想更容易实现。这也直接导致了在上市之后,不管是在日本本土,还是在其他地方的市场上,丰田86始终一车难求。  关于丰田86,很多人都听过这样一句话——这款车丰田只完成了一
基于光学变换理论,提出了一种新型的具有旋转和放大功能的光学变换器件,该器件可由具有正折射率参数的超常媒质实现。推导了所提出的器件材料的本构参数张量的通解表达式,并
期刊
目的 探讨少年型肾单位肾痨(NPHP)临床和基因突变特点.方法 收集2010年1月至2016年7月广东省6家医院临床拟诊或病理确诊来自25个家系的27例少年型NPHP患儿的临床资料和外周血