Wound healing is a complex biologic event. Numerous growth factors are involved in the regulation of tissue repair and remodelling processes. In this study, several techniques were used to observe the effects of recom...Wound healing is a complex biologic event. Numerous growth factors are involved in the regulation of tissue repair and remodelling processes. In this study, several techniques were used to observe the effects of recombinant human epidermal growth factors (rh-EGF) on porcine partial-thickness burn wound healing. Healing rates of the burn wounds were quantitated by computer image analysis of the wound Pkotographs. Biopsies were taken for examining the cell DNA cycle by flow cytometry, and for observing the keratinocyte migration and degree of reepithelialization quantitated by anti-keratin antibodies. The results indicated that daily topical application of rh-EGF in suitable concentrations accelerated epithelial healing of partial-thickness burn wounds, and there was also a dose-dependent effect of rh-EGF on healing rates of the partial-thickness burn wounds.展开更多
将基因重组的人表皮细胞生长因子(rh-EGF)、酸性成纤维细胞生长因子(r-aFGF)、碱性成纤维细胞生长因子(r-bFGF)和牛脑提取液(bBE)外用于烧伤创面,旨在探讨皮肤组织和细胞 DNA 的含量及周期变化。实验结果显示:烧伤创面经应用 rh-EGF,r-a...将基因重组的人表皮细胞生长因子(rh-EGF)、酸性成纤维细胞生长因子(r-aFGF)、碱性成纤维细胞生长因子(r-bFGF)和牛脑提取液(bBE)外用于烧伤创面,旨在探讨皮肤组织和细胞 DNA 的含量及周期变化。实验结果显示:烧伤创面经应用 rh-EGF,r-aFGF,r-bFGF 和 bBE 后第5天与生理盐水组(NS)相比,创面愈合率、表皮细胞和全厚层皮肤组织的 DNA 含量均高于 NS 组(P<0.01);全厚层皮肤 DNA 的流式细胞仪分析表明,应用生长因子各组的 S 期细胞数百分比均高于 NS 组(P<0.01),细胞分裂增殖旺盛,G 期细胞不断进入 S 期,使 S 期细胞数增加,DNA 的合成和含量增加。提示:烧伤创面外用细胞生长因子可促进表皮细胞的增殖,加速创面的愈合。展开更多
文摘Wound healing is a complex biologic event. Numerous growth factors are involved in the regulation of tissue repair and remodelling processes. In this study, several techniques were used to observe the effects of recombinant human epidermal growth factors (rh-EGF) on porcine partial-thickness burn wound healing. Healing rates of the burn wounds were quantitated by computer image analysis of the wound Pkotographs. Biopsies were taken for examining the cell DNA cycle by flow cytometry, and for observing the keratinocyte migration and degree of reepithelialization quantitated by anti-keratin antibodies. The results indicated that daily topical application of rh-EGF in suitable concentrations accelerated epithelial healing of partial-thickness burn wounds, and there was also a dose-dependent effect of rh-EGF on healing rates of the partial-thickness burn wounds.
文摘将基因重组的人表皮细胞生长因子(rh-EGF)、酸性成纤维细胞生长因子(r-aFGF)、碱性成纤维细胞生长因子(r-bFGF)和牛脑提取液(bBE)外用于烧伤创面,旨在探讨皮肤组织和细胞 DNA 的含量及周期变化。实验结果显示:烧伤创面经应用 rh-EGF,r-aFGF,r-bFGF 和 bBE 后第5天与生理盐水组(NS)相比,创面愈合率、表皮细胞和全厚层皮肤组织的 DNA 含量均高于 NS 组(P<0.01);全厚层皮肤 DNA 的流式细胞仪分析表明,应用生长因子各组的 S 期细胞数百分比均高于 NS 组(P<0.01),细胞分裂增殖旺盛,G 期细胞不断进入 S 期,使 S 期细胞数增加,DNA 的合成和含量增加。提示:烧伤创面外用细胞生长因子可促进表皮细胞的增殖,加速创面的愈合。