目的探讨应用猪脱细胞真皮基质覆盖深Ⅱ度烧伤削痂后的创面。方法将80例烧伤总体表面积(total body surface area,TBSA)1%～93%病例随机分为两组,猪脱细胞真皮基质(治疗组)40例,传统保痂组(对照组)40例。观察两组创面愈合时间和愈合质...目的探讨应用猪脱细胞真皮基质覆盖深Ⅱ度烧伤削痂后的创面。方法将80例烧伤总体表面积(total body surface area,TBSA)1%～93%病例随机分为两组,猪脱细胞真皮基质(治疗组)40例,传统保痂组(对照组)40例。观察两组创面愈合时间和愈合质量及并发症情况,治愈患者经过2个月～2年的随访,观察疤痕增生情况。结果治疗组中途创面不需换药,创面愈合时间缩短,平均(13.8±2.6)d,而对照组愈合时间(18.2±3.8)d,差异具有统计学意义(P<0.05)。同时,治疗组疤痕增生较对照减轻或无疤痕。结论猪脱细胞真皮基质治疗覆盖Ⅱ度烧伤削痂后的创面疗效显著,能加快创面愈合,减轻疤痕增生,降低烧伤感染和炎症反应综合症的发生,同时减轻病人的经济负担。展开更多
Regeneration of periodontal tissue is the most promising method for restoring periodontal structures.To find a suitable bioactive three- dimensional scaffold promoting cell proliferation and differentiation is critica...Regeneration of periodontal tissue is the most promising method for restoring periodontal structures.To find a suitable bioactive three- dimensional scaffold promoting cell proliferation and differentiation is critical in periodontal tissue engineering.The objective of this study was to evaluate the biocompatibility of a novel porcine acellular dermal matrix as periodontal tissue scaffolds both in vitro and in vivo.The scaffolds in this study were purified porcine acellular dermal matrix(PADM) and hydroxyapatite-treated PADM(HA-PADM). The biodegradation patterns of the scaffolds were evaluated in vitro.The biocompatibility of the scaffolds in vivo was assessed by implanting them into the sacrospinal muscle of 20 New Zealand white rabbits.The hPDL cells were cultured with PADM or HA-PADM scaffolds for 3,7,14,21 and 28 days.Cell viability assay,scanning electron microscopy(SEM),hematoxylin and eosin(H&E) staining, immunohistochemistry and confocal microscopy were used to evaluate the biocompatibility of the scaffolds.In vitro,both PADM and HA-PADM scaffolds displayed appropriate biodegradation pattern,and also,demonstrated favorable tissue compatibility without tissue necrosis,fibrosis and other abnormal response.The absorbance readings of the WST-1 assay were increased with the time course, suggesting the cell proliferation in the scaffolds.The hPDL cells attaching,spreading and morphology on the surface of the scaffold were visualized by SEM,H&E staining,immnuohjstochemistry and confocal microscopy,demonstrated that hPDL cells were able to grow into the HA-PADM scaffolds and the amount of cells were growing up in the course of time.This study proved that HA-PADM scaffold had good biocompatibility in animals in vivo and appropriate biodegrading characteristics in vitro.The hPDL cells were able to proliferate and migrate into the scaffold.These observations may suggest that HA-PADM scaffold is a potential cell carrier for periodontal tissue regeneration.展开更多
文摘目的探讨应用猪脱细胞真皮基质覆盖深Ⅱ度烧伤削痂后的创面。方法将80例烧伤总体表面积(total body surface area,TBSA)1%～93%病例随机分为两组,猪脱细胞真皮基质(治疗组)40例,传统保痂组(对照组)40例。观察两组创面愈合时间和愈合质量及并发症情况,治愈患者经过2个月～2年的随访,观察疤痕增生情况。结果治疗组中途创面不需换药,创面愈合时间缩短,平均(13.8±2.6)d,而对照组愈合时间(18.2±3.8)d,差异具有统计学意义(P<0.05)。同时,治疗组疤痕增生较对照减轻或无疤痕。结论猪脱细胞真皮基质治疗覆盖Ⅱ度烧伤削痂后的创面疗效显著,能加快创面愈合,减轻疤痕增生,降低烧伤感染和炎症反应综合症的发生,同时减轻病人的经济负担。
基金supported by Chinese post-doctoral fund(20090451410)International cooperation program of science of Shandong Province (201lHZ035)
文摘Regeneration of periodontal tissue is the most promising method for restoring periodontal structures.To find a suitable bioactive three- dimensional scaffold promoting cell proliferation and differentiation is critical in periodontal tissue engineering.The objective of this study was to evaluate the biocompatibility of a novel porcine acellular dermal matrix as periodontal tissue scaffolds both in vitro and in vivo.The scaffolds in this study were purified porcine acellular dermal matrix(PADM) and hydroxyapatite-treated PADM(HA-PADM). The biodegradation patterns of the scaffolds were evaluated in vitro.The biocompatibility of the scaffolds in vivo was assessed by implanting them into the sacrospinal muscle of 20 New Zealand white rabbits.The hPDL cells were cultured with PADM or HA-PADM scaffolds for 3,7,14,21 and 28 days.Cell viability assay,scanning electron microscopy(SEM),hematoxylin and eosin(H&E) staining, immunohistochemistry and confocal microscopy were used to evaluate the biocompatibility of the scaffolds.In vitro,both PADM and HA-PADM scaffolds displayed appropriate biodegradation pattern,and also,demonstrated favorable tissue compatibility without tissue necrosis,fibrosis and other abnormal response.The absorbance readings of the WST-1 assay were increased with the time course, suggesting the cell proliferation in the scaffolds.The hPDL cells attaching,spreading and morphology on the surface of the scaffold were visualized by SEM,H&E staining,immnuohjstochemistry and confocal microscopy,demonstrated that hPDL cells were able to grow into the HA-PADM scaffolds and the amount of cells were growing up in the course of time.This study proved that HA-PADM scaffold had good biocompatibility in animals in vivo and appropriate biodegrading characteristics in vitro.The hPDL cells were able to proliferate and migrate into the scaffold.These observations may suggest that HA-PADM scaffold is a potential cell carrier for periodontal tissue regeneration.
