Background: Dressing of split-thickness skin graft donor sites can be traumatic for the patient. The most advanced and expensive dressings have been compared to the most basic of dressings, with little or no consensus...Background: Dressing of split-thickness skin graft donor sites can be traumatic for the patient. The most advanced and expensive dressings have been compared to the most basic of dressings, with little or no consensus and an unpersuasive level of evidence. We aimed to determine the efficacy of the locally manufactured non-adherent, hydroconductive Drawtex? dressing and compare it to our current standard-of-care dressing, a thin transparent polyurethane film, in the healing of split-thickness donor sites. Methods: This prospective, within-patient controlled study included 27 adult participants, each with two split-thickness skin donor sites. The 54 donor site wounds were compared with regard to time to re-epithelialisation, perceived pain and healed wound quality. Results: By day 5, complete healing of donor site wounds, defined as >90% of epithelialized surface, was significantly higher in the hydroconductive dressing group compared to the polyurethane film group (22.2% and 3.7%, respectively;p < 0.0001). The hydroconductive dressing-treated donor site wounds were significantly less painful at 24-hours, 48-hours and 7-days post-operatively, and had fewer complications and superior wound healing quality. Conclusion: We have demonstrated that the relatively cheap and readily available dressing made locally in South Africa, Drawtex? is at least as safe, and potentially superior in wound healing, when compared to our current standard-of-care dressing.展开更多
Background: Neck contracture after burns is a major complication that affects function and cosmesis. The aim of covering the raw area and defects is through using good quality pliable skin. Full thickness skin graft a...Background: Neck contracture after burns is a major complication that affects function and cosmesis. The aim of covering the raw area and defects is through using good quality pliable skin. Full thickness skin graft allows a large dimension sheet of good quality skin with low donor-site morbidity. Also it provides similar skin quality to the recipient areas with much less cosmetic difference. Methods: Four men and eight women underwent neck contracture release and reconstruction from December of 2015 to August of 2016. Mean patient age was 29 years (range from 12 to 46 years). Burn scar contracture releases were performed and cervicoplasty was added for optimal neck appearance. Uniformly full thickness skin grafts were applied. Both lateral ends of these grafts (release incisions) were designed with a fishtail shape for sufficient release and to minimize linear scar band formation in the most lateral region of the neck. Results: Full thickness skin grafts as large as 24 ± 12 cm (in length) and 10 - 15 cm (in width) were used. All grafts were taken without significant complications. Range of neck motion increased, and the cervico-mental angle was regained in all patients. A highly natural neck contour was universally obtained without a secondary debulking procedure. Conclusions: Full thickness skin grafts for treatment of post burn neck contraction give good functional and cosmetic results. They give similar color match and good skin quality, also help in regaining of cervico-mental angle.展开更多
Full thickness skin grafts and composite grafts are a workhorse in reconstructive surgery of nose and ear defects whether they are originated from trauma, cancer surgery or burns. The reliability of these grafts has b...Full thickness skin grafts and composite grafts are a workhorse in reconstructive surgery of nose and ear defects whether they are originated from trauma, cancer surgery or burns. The reliability of these grafts has been proved with an established clinical use and morbidity to the donor site is minimal if harvesting and donor site selection if appropriate. Use of double or multiple grafts to reconstruct a complex defect of the nose has not been described and our report is meaningful for the fact that it describes a further use of the surgical concept of grafting.展开更多
目的:通过模拟皮肤损伤修复过程中局部微环境的变化,了解脂肪来源干细胞(adi pose t i ssue deri ved st em,cAeSCl)l的表型改变对细胞功能的影响。方法:由手术废弃皮肤和脂肪组织获取实验所需细胞,并培养扩增。对不同传代数的ASC细胞...目的:通过模拟皮肤损伤修复过程中局部微环境的变化,了解脂肪来源干细胞(adi pose t i ssue deri ved st em,cAeSCl)l的表型改变对细胞功能的影响。方法:由手术废弃皮肤和脂肪组织获取实验所需细胞,并培养扩增。对不同传代数的ASC细胞进行脂肪细胞诱导分化,了解细胞的可诱导分化性能;构建ASC细胞-胶原凝胶,贴壁或悬浮培养,对ASC凝胶进行α-SMA免疫组化染色;培养基中添加TGF-β1,观察TGF-β1对ASC细胞表型和可诱导分化能力的影响;收集培养上清液,El i sa法测定比较成纤维细胞和ASC细胞的细胞生长因子分泌水平,以及经TGF-β1作用,ASC细胞表型发生变化后细胞生长因子分泌水平的变化。结果:ASC细胞可以多次传代,仍保持较好的可诱导分化特性;在培养过程中,张力和TGF-β1可以使ASC获得α-SMA阳性表型;ASC细胞相比成纤维细胞,有较高的VEGF和KGF分泌水平,但TGF-β1分泌水平极低(未测到),获得α-SMA阳性表型的ASC细胞的VEGF分泌水平继续大幅上升,而且也分泌了较高水平的TGF-β1。结论:ASC细胞在创伤局部环境的刺激下或经体外人工诱导,可以产生更有利于创伤愈合的表型。对ASC细胞特性的了解和调控,将有利于ASC细胞在组织修复再生方面的应用。展开更多
文摘Background: Dressing of split-thickness skin graft donor sites can be traumatic for the patient. The most advanced and expensive dressings have been compared to the most basic of dressings, with little or no consensus and an unpersuasive level of evidence. We aimed to determine the efficacy of the locally manufactured non-adherent, hydroconductive Drawtex? dressing and compare it to our current standard-of-care dressing, a thin transparent polyurethane film, in the healing of split-thickness donor sites. Methods: This prospective, within-patient controlled study included 27 adult participants, each with two split-thickness skin donor sites. The 54 donor site wounds were compared with regard to time to re-epithelialisation, perceived pain and healed wound quality. Results: By day 5, complete healing of donor site wounds, defined as >90% of epithelialized surface, was significantly higher in the hydroconductive dressing group compared to the polyurethane film group (22.2% and 3.7%, respectively;p < 0.0001). The hydroconductive dressing-treated donor site wounds were significantly less painful at 24-hours, 48-hours and 7-days post-operatively, and had fewer complications and superior wound healing quality. Conclusion: We have demonstrated that the relatively cheap and readily available dressing made locally in South Africa, Drawtex? is at least as safe, and potentially superior in wound healing, when compared to our current standard-of-care dressing.
文摘Background: Neck contracture after burns is a major complication that affects function and cosmesis. The aim of covering the raw area and defects is through using good quality pliable skin. Full thickness skin graft allows a large dimension sheet of good quality skin with low donor-site morbidity. Also it provides similar skin quality to the recipient areas with much less cosmetic difference. Methods: Four men and eight women underwent neck contracture release and reconstruction from December of 2015 to August of 2016. Mean patient age was 29 years (range from 12 to 46 years). Burn scar contracture releases were performed and cervicoplasty was added for optimal neck appearance. Uniformly full thickness skin grafts were applied. Both lateral ends of these grafts (release incisions) were designed with a fishtail shape for sufficient release and to minimize linear scar band formation in the most lateral region of the neck. Results: Full thickness skin grafts as large as 24 ± 12 cm (in length) and 10 - 15 cm (in width) were used. All grafts were taken without significant complications. Range of neck motion increased, and the cervico-mental angle was regained in all patients. A highly natural neck contour was universally obtained without a secondary debulking procedure. Conclusions: Full thickness skin grafts for treatment of post burn neck contraction give good functional and cosmetic results. They give similar color match and good skin quality, also help in regaining of cervico-mental angle.
文摘Full thickness skin grafts and composite grafts are a workhorse in reconstructive surgery of nose and ear defects whether they are originated from trauma, cancer surgery or burns. The reliability of these grafts has been proved with an established clinical use and morbidity to the donor site is minimal if harvesting and donor site selection if appropriate. Use of double or multiple grafts to reconstruct a complex defect of the nose has not been described and our report is meaningful for the fact that it describes a further use of the surgical concept of grafting.
文摘目的:通过模拟皮肤损伤修复过程中局部微环境的变化,了解脂肪来源干细胞(adi pose t i ssue deri ved st em,cAeSCl)l的表型改变对细胞功能的影响。方法:由手术废弃皮肤和脂肪组织获取实验所需细胞,并培养扩增。对不同传代数的ASC细胞进行脂肪细胞诱导分化,了解细胞的可诱导分化性能;构建ASC细胞-胶原凝胶,贴壁或悬浮培养,对ASC凝胶进行α-SMA免疫组化染色;培养基中添加TGF-β1,观察TGF-β1对ASC细胞表型和可诱导分化能力的影响;收集培养上清液,El i sa法测定比较成纤维细胞和ASC细胞的细胞生长因子分泌水平,以及经TGF-β1作用,ASC细胞表型发生变化后细胞生长因子分泌水平的变化。结果:ASC细胞可以多次传代,仍保持较好的可诱导分化特性;在培养过程中,张力和TGF-β1可以使ASC获得α-SMA阳性表型;ASC细胞相比成纤维细胞,有较高的VEGF和KGF分泌水平,但TGF-β1分泌水平极低(未测到),获得α-SMA阳性表型的ASC细胞的VEGF分泌水平继续大幅上升,而且也分泌了较高水平的TGF-β1。结论:ASC细胞在创伤局部环境的刺激下或经体外人工诱导,可以产生更有利于创伤愈合的表型。对ASC细胞特性的了解和调控,将有利于ASC细胞在组织修复再生方面的应用。
