组织工程化真皮在四肢关节部位瘢痕整形术中的应用

目的:探讨应用脱细胞异体真皮与自体表皮复合移植,修复四肢关节挛缩瘢痕切除后的创面的临床效果。方法:肘关节、腕关节、膝关节和距小腿(踝)关节挛缩瘢痕切除松解后,以脱细胞异体真皮与自体表皮构成复合皮,I期移植修复创面,创面最小7cm×11cm,最大12cm×19cm,其中肘关节部位例,距小腿(踝)6关节部位例,膝关节部位例,腕关节部位例。观察移植复合皮的753成活率及愈合皮片色泽、质地和关节功能改善情况。结果:临床应用21例,术后移植复合皮成活率93.7%,随访3个月～2年,移植皮片颜色与周围正常皮肤颜色接近,皮片柔软,瘢痕增生不明显,关节功能较术前显著改善。结论:组织工程化脱细胞异体真皮和自体表皮复合移植修复关节部位的切瘢后创面不失为一种较理想的材料,尤其对自体皮源有限的患者。     

组织工程化真皮在四肢关节部位瘢痕整形术中的应用

目的：探讨应用脱细胞异体真皮与自体表皮复合移植，修复四肢关节挛缩瘢痕切除后的创面的临床效果。方法：肘关节、腕关节、膝关节和距小腿(踝)关节挛缩瘢痕切除松解后。以脱细胞异体真皮与自体表皮构成复合皮，Ⅰ期移植修复创面，创面最小7cm&;#215;11cm，最大12cm&;#215;19cm，其中肘关节部位6例，距小腿(踝)关节部位7例，膝关节部位5例，腕关节部位3例。观察移植复合皮的成活率及愈合皮片色泽、质地和关节功能改善情况。结果：临床应用21例，术后移植复合皮成活率93．7％，随访3个月～2年，移植皮片颜色与周围正常皮肤颜色接近，皮片柔软，瘢痕增生不明显，关节功能较术前显著改善。结论：组织工程化脱细胞异体真皮和自体表皮复合移植修复关节部位的切瘢后创面不失为一种较理想的材料，尤其对自体皮源有限的患者。     

脱细胞异体真皮与自体刃厚皮复合移植在烧伤整形中的应用

目的：探讨烧伤后全层皮肤缺损创面新的修复手术方法。方法：回顾分析2000～20HD4年16例26个部位深度烧伤及烧伤后期 瘢痕整形患者的脱细胞异体真皮与自体刃厚皮片复合移植手术效果。结果：复合皮成活良好，成活率95%以上，外观及功能接近正常 皮肤，取得良好效果。结论：脱细胞异体真皮与自体刃厚皮片复合移植可有效保证移植部位外观及功能，减轻供皮区瘢痕。     

复合皮片移植治疗烧伤后功能部位瘢痕20例

目的:观察复合皮片移植对烧伤后功能部位瘢痕的修复效果。方法:选择2002-05/2005-12在柳州医学高等专科学校第一附属医院烧伤整形科住院的复合皮片移植治疗烧伤功能部位瘢痕患者20例,患者均知情同意。所有病例均在全麻下行功能部位瘢痕切除,将脱细胞异体真皮(广西北生药业北京桀亚莱福生物技术有限公司生产,物理性能柔软、有弹性、弯曲不易断裂、乳白色、呈网状、分光洁面与粗糙面)移植于创面上,异体真皮粗糙面紧贴创面,光洁面朝上,缝合创周。取自体薄皮片(取自头皮、躯干或四肢)移植于异体真皮上,皮片间隙尽量小,以减少异体真皮外露。术后2周换药,术后定时随访。观察术后2周~1年复合皮的移植成活率、挛缩率、平整光滑度、皮肤弹性、关节部位功能恢复情况及供皮区愈合情况。结果:20例患者复合皮移植后随访时间1个月~1年,1~3个月4例,4~6个月3例,7个月~1年13例。31个部位复合皮移植一期成活30个部位,另1个部位创面因自体皮片间隙过大异体真皮外露影响皮片成活,植皮成活率达93.00%。植皮区外观平整,较光滑,弹性尚可,挛缩轻,关节功能活动良好。供皮区愈合良好。结论:复合皮片移植成活率高,能明显改善烧伤功能部位瘢痕所致功能障碍及外观畸形。     

脱细胞异体真皮联合头刃厚皮修复儿童瘢痕创面

目的探讨脱细胞异体真皮联合头刃厚皮修复儿童瘢痕创面的临床效果。方法 52例外伤及烧伤后瘢痕,根据瘢痕切除后创面封闭术式分为复合植皮组和自体植皮组各26例,一次性切除瘢痕后,复合植皮组采用脱细胞异体真皮联合头刃厚皮移植修复创面,自体植皮组采用自体刃厚皮片或薄中厚皮片移植修复创面。比较2组植皮成活率和植皮后创面完全愈合时间,随访10个月,观察创面移植区域的色泽、质地、皮下丰满度、瘢痕增生情况及对关节功能的影响等。结果复合植皮组创面植皮成活率(92.31%)、创面愈合时间[(12.62±3.18)d]与自体植皮组[96.15%、(11.90±2.61)d]比较差异均无统计学意义(P>0.05);复合植皮组植皮区丰满,瘢痕增生轻,色泽、质地优于自体植皮组(P<0.05);复合植皮组关节功能受影响5例,自体植皮组关节功能受影响10例,差异有统计学意义(P<0.05);复合植皮组头皮供皮区均无瘢痕增生,自体植皮组供皮区色素改变16例,瘢痕形成10例,其中2种情况均发生者8例,供皮区瘙痒16例,供皮区反复破溃3例,影响睡眠5例。结论脱细胞异体真皮联合头刃厚皮修复儿童瘢痕丰满度高、瘢痕增生轻,功能恢复好,供皮区损伤小。     

自制异种猪去细胞真皮修复切除瘢痕区创面的愈合质量

目的:观察自制异种猪去细胞真皮基质与自体刃厚皮复合皮移植在瘢痕切除后植皮区的成活率和瘢痕形成情况组织病理学结果,并于单纯行自体中厚皮移植进行比较。方法:选择2004-03/2005-04解放军总医院第三○四临床部烧伤整形科烧烫伤后瘢痕形成患者21例共29处。瘢痕增生伴痛痒症状明显者15例,瘢痕挛缩明显者6例;供皮区正常皮肤者15例,扁平状瘢痕皮肤者6例。其中取23处为实验组;取6例6个部位的另一侧肢体创面作为对照组,参与患者知情同意。①用健康白色家猪制得异种猪去细胞真皮基质。②移植部位:四肢、躯干。完整切除瘢痕,实验组根据创面大小剪裁自制真皮基质,移植最大面积为10cm×8cm,真皮面接触植皮区,自体刃厚皮覆盖其上。对照组切除瘢痕后单纯行自体中厚皮移植。两组切除瘢痕手术操作相同。于术后2周和2个月观察植皮成活率和瘢痕形成情况,13个月时取1例患者复合皮组织进行病理学观察。移植皮成活标准为移植皮片色泽红润平坦,与受皮区基底贴附牢固,创缘愈合好,皮片质地柔软,颜色与周围皮肤接近。结果:按意向处理分析,纳入患者21例,均进入结果分析。①术后两组植皮区大体观察:实验组术后2周,植皮成活率100%(23/23)。可见大部分自体刃厚皮红润,有些植皮区尚可看到自体刃厚皮下的网状真皮支架,刃厚皮与其下的真皮基质结合牢固。术后2个月复查,复合皮平整柔软,弹性较好,关节活动正常,但稍有色素沉着,与对照组的中厚皮覆盖的植皮区效果相似,但实验组供皮区瘢痕形成明显轻于对照组。②组织病理学观察:光镜下可见复合皮皮肤结构完整,但表皮较薄,表皮-真皮连接区较平坦,真皮内可见胶原纤维排列较规整,可见微血管结构及成纤维细胞,少许慢性炎性细胞浸润。结论:应用自制异种猪去细胞真皮支架与自体刃厚皮复合移植,可明显改善瘢痕切除后植皮的愈合质量,经济实用。     

功能部位创面修复中脱细胞异体真皮与自体皮复合移植的作用

目的探讨脱细胞异体真皮与自体薄断层皮片复合移植用于修复功能部位肉芽创面的临床疗效。方法1999-03/2004-03广西医科大学第一附属医院烧伤整形康复中心收治功能部位肉芽创面患者48例,随机分成2组,治疗组与对照组各24例,治疗组采用J-1型脱细胞异体真皮与自体薄断层皮复合移植一次性完成创面修复共28个功能部位;对照组共30个功能部位仅移植自体薄断层皮片。结果两组皮片均成活良好;经随访观察6～24个月,治疗组脱细胞异体真皮无排异反应,植皮处光滑平整,色泽及弹性良好,瘢痕增生轻,关节运动角度正常;对照组表皮反复起水泡,瘢痕增生重,关节运动角度较正常小。结论复合皮移植一次性完成对功能部位肉芽创面的修复是一种理想的方法,皮片成活率高,远期瘢痕增生轻,关节活动功能无明显受限。     

功能部位创面修复中脱细胞异体真皮与自体皮复合移植的作用

目的探讨脱细胞异体真皮与自体薄断层皮片复合移植用于修复功能部位肉芽创面的临床疗效.方法 1999-03/2004-03广西医科大学第一附属医院烧伤整形康复中心收治功能部位肉芽创面患者48例,随机分成2组,治疗组与对照组各24例,治疗组采用J-1型脱细胞异体真皮与自体薄断层皮复合移植一次性完成创面修复共28个功能部位;对照组共30个功能部位仅移植自体薄断层皮片.结果两组皮片均成活良好;经随访观察6～24个月,治疗组脱细胞异体真皮无排异反应,植皮处光滑平整,色泽及弹性良好,瘢痕增生轻,关节运动角度正常;对照表皮反复起水泡,瘢痕增生重,关节运动角度较正常小.结论复合皮移植一次性完成对功能部位肉芽创面的修复是一种理想的方法,皮片成活率高,远期瘢痕增生轻,关节活动功能无明显受限.     

异种(猪)脱细胞真皮与自体微粒皮复合移植的疗效观察

目的用异种(猪)脱细胞真皮与自体微粒复合移植解决烧伤患者自体微粒皮移植术后功能欠佳的问题。方法5例男性,TBSA50％～95％,Ⅲ度30％～70％,异种脱细胞真皮移植100～150cm2,采用两步法,外层覆盖异体皮。结果术后4～6周异体皮脱落,创面愈合80％左右,复合皮移植处外观平整,皮肤弹性及关节功能较对照部位好。半年后复诊关节功能正常,疤痕增生不明显。结论异种(猪)脱细胞真皮来源容易、价格低廉,与自体微粒皮复合移植,疗效满意。     

异体表皮干细胞与猪脱细胞真皮构建复合皮移植6例

2005-01/2006-10在南昌大学第一附属医院烧伤科就诊的深度烧伤患者6例,均为四肢Ⅲ度烧伤创面.异种(猪)脱细胞真皮与异体表皮干细胞构建的复合皮由南昌大学第一附属医院烧伤中心提供.清创消毒后,6例患者均进行复合皮移植、自体刃厚皮移植,共移植复合皮12块,自体刃厚皮96块.复合皮移植是将复合皮剪成1.5 cm×1.5 cm,粗糙面向下、光滑面向上植于创面上;自体刃厚皮移植是将大片自体刃厚皮铺于矾土林纱布上,剪成1.5cm×1.5 cm,植于复合皮的四周.移植后3 d揭去创面外层纱布,见复合皮及自体刃厚皮与创面粘连好、湿润,呈淡红色:7 d复合皮及自体刃厚皮大部分成活,随后成活的皮片向四周扩展,至14 d大部分皮片接近融合,21 d时创面已基本愈合.移植的复合皮、自体刃厚皮成活数量比较,差异无显著性意义(P＞0.05).因复合皮扩展情况不如自体刃厚皮,所以复合皮移植后的创面愈合面积小于自体刃厚皮移植(P＜0.01).在临床观察中6例患者暂末发生不良事件和副反应.提示表皮干细胞和(猪)脱细胞真皮构建的人工复合皮移植到受区,可建立血液循环,并保持一定的活力,达到覆盖创面、防止感染、防止体液流失的目的.     

Acellular porcine dermal matrix produced with different methods and an experimental study on its transplantation to skin wound.]

OBJECTIVE: To observed the effect of healing quality of composite skin grafting consisting of acellular porcine dermal matrix combined with autologous split-thickness skin graft. METHODS: Porcine skin was treated with dispase II/triton X-100 or hyperosmotic saline/sodium-dodecyl-sulfate (SDS) respectively, and acellular porcine dermal matrix I (APDMI) and APDM II were obtained. Sixty-three Sprague-Dawley rats with full-thickness skin defects on the back were separately covered with APDMT + split-thickness autologous skin, or APDM II + split-thickness autologous skin. The quality of wound healing was observed, the rates of survival and contraction of the grafts were calculated, the tissue samples were harvested for histological examination, and compared with that of autologous split-thickness skin graft. RESULTS: The wound healing quality of composite skin I, and II was good. There was no significant difference in the rate of survival and contraction of the grafts between the two composite skin grafting groups. It was indicated by histological examination intact basal membrane. There was no significant difference in the survival rate between composite skin grafting groups and autologous split-thickness skin at the 6 th week after operation, but the contraction rates of the grafts in the composite skin groups were lower. CONCLUSION: Full-thickness skin defect can be healed by covering with acellular porcine dermal matrix produced by two methods combined with split-thickness autolograft, and it can help improve the quality of wound healing.     

The application of acellular dermal matrix allograft in functional position of patients with post-barns plastic operation

AIM: To investigate the effect of allogeneic acellular dermal matrix(ADM) on cograft in joint functional positions of patients with post-burn plastic operation. METHODS: 9 patients vrith hypertrophic scar and joint dysfunction after severe burns were used After pre-treating with trypsin and TritonX-100, 13 reticulated ADM were overlapped with autogenous ultrathin split-thickness skin grafts (USTS), and were transplanted to the scar excision wounds in the joints of four limbs at the same time. The neighbouring autogenous thin split-thickness skin grafts(TSTS) were used as control RESULTS: The composite skin grafts as well as the controls were all survived The rejection and hypertrophic scars were not found during (1-5) years follow-up studies. The appearance, fiber and function of composite skin grafts were near to normal skins. CONCLUSION: The ADM could be used to joint functional positions of patients with post-burn hypertrophic scan and could produce satisfactory plastic results as dermal substitute.     

深度手烧伤的治疗及功能康复

目的 :探讨深度手烧伤早期创面修复及功能康复最好的治疗方法。方法 :应用中厚皮、异体去细胞真皮基质作支架加自体刃厚皮片移植 ,腹部真皮血管网皮片及超薄皮瓣移植等手术方式 ,进行深度手烧伤早期切削痂。结果 :2 94例 4 6 2只手功能良好者 138例 2 32只手 (5 0 % ) ,功能较好者 79例 134只手 (2 9% ) ,功能障碍者 77例 96只手 (2 1% )。结论 :应用早期切削痂植皮的方法可减少瘢痕增生和畸形 ,使深度手烧伤后获得满意的外形和功能     

异体脱细胞真皮联合自体皮复合移植在创面修复中的应用及远期疗效观察

目的寻找功能部位深度烧伤创面与瘢痕畸形修复的理想覆盖材料。方法将功能部位的深度烧伤、瘢痕切除后创面或溃疡创面行脱细胞异体真皮＋自体刃厚皮复合移植。结果30例患者复合皮全部成活,复合皮光滑柔软,局部弹性好,关节功能恢复良好。结论脱细胞异体真皮＋自体皮是功能部位创面修复的理想覆盖材料。     

Natural expansion of artificial dermal template by successful full-term pregnancy

Extensive postburn scars of the trunk may cause breathing difficulty and, in female patients of reproductive age, render future pregnancy a serious reconstructive goal. Scar excision and skin grafting with or without artificial dermal templates is the current preferred management. A patient who underwent staged extensive grafting of the abdominal wall by dermal regeneration template and completed a full-term successful pregnancy is presented here. Although tissue expanders have been used to expand artificial dermal templates, natural expansion by pregnancy has not been previously documented. A 30-year-old woman with extensive chest and abdominal wall, bilateral gluteal and breast scars after burns sustained at childhood presented with difficulty in deep breathing. Abdominal scar tissue was excised and the abdominal wall was reconstructed by dermal regeneration template and autologous thin split-thickness skin graft in two stages. Six months postoperatively, spirometric values were improved by 15%, while 1 year later the patient completed successfully a full-term pregnancy. Reconstruction of extensive abdominal postburn scars by dermal regeneration template improves breathing by increasing elasticity and compliance of the reconstructed area. In female patients, the template can be extensively and naturally expanded by the gradually growing uterus, allowing for full-term pregnancy.     

全层皮肤缺损创面移植异种脱细胞真皮基质与薄自体皮重塑基底膜的实验观察

背景异种脱细胞真皮基质与薄自体皮复合移植修复全层皮肤缺损创面取得了良好的效果,但对移植后基底膜的重塑尚不十分清楚.目的观察异种(猪)脱细胞真皮基质与薄自体皮复合移植模型中基底膜重塑的变化规律.设计随机对照实验研究.地点和材料动物实验在上海市烧伤研究所完成,指标检测在上海第二医科大学细胞生物学教研室完成.清洁级雄性SD大鼠(由中国医学科学院上海实验动物中心提供),体质量200～250 g.干预将SD大鼠随机分为两组,每组42只.所有动物均饲养在层流房间内,恒定的湿度与温度,单笼饲养.A组单纯移植薄自体皮组;B组脱细胞猪真皮基质(江苏启东医疗用品研究所提供)+薄自体皮复合移植.将异种(猪)脱细胞真皮基质与薄自体皮复合移植于大鼠创面,分别于移植后1,2,3,4,8,12,16周留取标本,采用免疫组化、透射电镜等方法.主要观察指标观察基底膜中层粘连蛋白的变化规律及12周时基底膜的超微结构,同时以单纯薄自体皮移植进行对照.结果B组移植后1,2,3,4,8,12,16周,层粘连蛋白的表达分别为88.32±2.72,89.22±2.16,88.84±3.43,93.49 ±4.59,87.57±3.33,95.87±1.84,86.57±2.45,A组分别为78.96±1.68,85.37±5.41,82.49±3.73,84.27±2.69,72.88±3.57,88.19±3.36,82.82±2.86,12周时复合皮移植组基底膜结构清晰连续,而单纯移植薄自体皮组基底膜模糊、不连续.结论异种脱细胞真皮基质与薄自体皮复合移植后,基底膜中层粘连蛋白表达增高,可能有利于复合皮移植后基底膜的重塑,增强表皮和真皮之间的连接,进而改善创面愈合质量.     

异种(猪)无细胞真皮基质的制备及体外生物相容性

背景:人同种无细胞真皮基质作为一种永久性真皮支架,已成功应用于烧伤创面修复及美容医学等领域,但由于来源有限,限制了其应用.目的;研制异种(猪)无细胞真皮基质,并对其体外生物相容性进行评价.设计、时间及地点:体外细胞学对比观察实验,于2007-08/2008-06在中国辐射防护研究院生物材料与制药技术研究所实验室完成.材料:实验猪由中国辐射防护研究院实验动物中心提供;人成纤维细胞来自武警山西总队医院健康儿童包皮环切术切除的包皮组织.方法:无菌条件下获取健康小白猪猪皮,用高渗盐溶液-去污剂、胰酶消化及超声清洗的方法,制备猪无细胞真皮基质.体外培养人成纤维细胞,用猪无细胞真皮基质浸提液法及人成纤维细胞和猪无细胞真皮基质直接贴附法,评价猪无细胞真皮基质体外生物相容性.主要观察指标:①猪无细胞真皮基质的组织学形态.②猪无细胞真皮基质的体外生物相容性.结果:制备的猪无细胞真皮基质,完全去除了表皮和真皮中的细胞成分,保留了胶原基质.猪无细胞真皮基质浸提液对人成纤维细胞增殖无明显影响.人成纤维细胞可以在猪无细胞真皮基质上贴附、增殖.结论:此种方法制备的无细胞真皮基质完全去除了表皮和真皮中的细胞成分,有较好的体外生物相容性.     

无细胞异体真皮基质在烧伤后整形患者功能部位的应用

AIM:To investigate the effect of allogeneic acellular dermal matrix(ADM) on cograft in joint functional positions of patients with post burn plastic operation. METHODS:9 patients with hypertrophic scar and joint dysfunction after severe burns were used. After pre treating with trypsin and TritonX 100, 13 reticulated ADM were overlapped with autogenous ultrathin split thickness skin grafts(USTS), and were transplanted to the scar excision wounds in the joints of four limbs at the same time. The neighbouring autogenous thin split thickness skin grafts(TSTS) were used as control.RESULTS:The composite skin grafts as well as the controls were all survived. The rejection and hypertrophic scars were not found during (1- 5) years follow up studies. The appearance, fiber and function of composite skin grafts were near to normal skins. CONCLUSION:The ADM could be used to joint functional positions of patients with post burn hypertrophic scars and could produce satisfactory plastic results as dermal substitute.     

异种(猪)脱细胞真皮基质治疗小儿Ⅱ度烧伤的护理

目的:探讨异种(猪)脱细胞真皮基质一次性覆盖创面治疗患儿Ⅱ度烧伤的护理。方法:159例Ⅱ度烧伤患儿采用真皮基质覆盖创面后,加强生命体征的监测、准确补液抗休克、密切观察创面情况及加强营养供给。结果:159例患儿全部安全渡过休克期,真皮基质包扎治疗Ⅱ度烧伤患儿,疗效好,愈合时间缩短,疤痕增生轻。结论:正确的创面处理方法,及时有效的护理措施及准确无误的病情监测等是增进患儿烧伤治疗效果的关键,真皮基质是一种良好的生物敷料,值得推广。