The human epidermal growth factor gene was synthesized with DNA synthesizer andby enzymes.Computer assisted to design the gene sequence and the restriction enzyme sites,andto elhninate the repeated and self-complement...The human epidermal growth factor gene was synthesized with DNA synthesizer andby enzymes.Computer assisted to design the gene sequence and the restriction enzyme sites,andto elhninate the repeated and self-complementary sequences.So that multiple doning and gene ex-pression were available for the designed gene sequence.The whole gene was formed by annealing8 chemically synthesized oligodeoxynucleotide fragments,enzymatically filling up the 4 twenty-basespaces and ligating the nicks,and was inserted into EcoR I and HInc Ⅱ sites ofplasmid pUC12.The recombinant plasmid was transformed into E.coli JM103 and 200 whitedones were obtained by X-gal and ampicilin screening.The positive clones were isolated andcharacterized by restriction enzyme analysis and DNA sequencing.展开更多
In this study the w/o/w extraction–evaporation technique was adopted to prepare poly(lactic-co-glycolic acid) (PLGA) microspheres loading recombinant human epidermal growth factor (rhEGF). The micro-spheres were char...In this study the w/o/w extraction–evaporation technique was adopted to prepare poly(lactic-co-glycolic acid) (PLGA) microspheres loading recombinant human epidermal growth factor (rhEGF). The micro-spheres were characterized for morphology by transmission electron microscopy (TEM) and particle size distribution. The release performances, the proliferation effects and therapeutic effects of rhEGF-loaded PLGA microspheres were all studied. The results showed that these spherical micro-spheres had a narrow size distribution and a high drug encapsulation efficiency (85.6%). RhEGF-loaded microspheres enhanced the growth rate of fibroblasts and wound healing more efficiently than pure rhEGF. The number of the proliferating cell nuclear antigen (PCNA) in the epidermis layer with the mi-crosphere treatment was significantly larger than those of the control groups. Overall locally sustained delivery of rhEGF from biodegradable PLGA microspheres may serve as a novel therapeutic strategy for diabetic ulcer repair.展开更多
[目的]研究重组人表皮生长因子(recombinant human epidermal growth factor,rhEGF)在治疗外伤性鼓膜穿孔过程中的作用。[方法]对门诊就诊的外伤性鼓膜穿孔患者123例患者,随机的分别采用4种不同的治疗方法(即常规治疗方法、贴膜法、应用...[目的]研究重组人表皮生长因子(recombinant human epidermal growth factor,rhEGF)在治疗外伤性鼓膜穿孔过程中的作用。[方法]对门诊就诊的外伤性鼓膜穿孔患者123例患者,随机的分别采用4种不同的治疗方法(即常规治疗方法、贴膜法、应用rhEGF喷剂法、贴膜和rhEGF喷剂联合应用法),定期观察鼓膜愈合情况、瘢痕的轻重,记录鼓膜完全愈合的时间,按鼓膜穿孔的大、中、小,分3组进行统计学处理。[结果]对小穿孔4种治疗方法差异无显著性意义(愈合时间,P>0.05),对中等穿孔,传统组、贴膜组与rhEGF组、贴膜+rhEGF组之间分别两两比较差异有显著性意义(P<0.05)。对大穿孔,传统组、贴膜组、贴膜+rhEGF组三者之间两两比较差异均有显著性意义(P<0.05)。[结论]外伤性鼓膜穿孔中的中等穿孔和大穿孔应用rhEGF或rhEGF与贴膜联合应用,可以显著地缩短愈合时间,并减轻鼓膜瘢痕,提高治愈率。展开更多
目的观察黄连解毒汤联合重组人表皮生长因子(recombinant human epidermal growth factor,rhEGF)凝胶治疗深Ⅱ度烧伤的临床疗效以及对患者血清炎症因子水平的影响。方法选取2018年1月至2019年1月重庆市开州区人民医院收治的64例深Ⅱ度...目的观察黄连解毒汤联合重组人表皮生长因子(recombinant human epidermal growth factor,rhEGF)凝胶治疗深Ⅱ度烧伤的临床疗效以及对患者血清炎症因子水平的影响。方法选取2018年1月至2019年1月重庆市开州区人民医院收治的64例深Ⅱ度烧伤患者作为研究对象,按照不同干预方法将其分为观察组(32例)与对照组(32例),观察组患者予以黄连解毒汤联合rhEGF凝胶治疗局部创面,对照组患者单独予以rhEGF凝胶治疗局部创面,对比两组患者创面愈合时间、简明烧伤健康量表(burn specific health scale-brief,BSHS-B)评分以及血清肿瘤坏死因子-α(TNF-α)、白细胞介素-2 (IL-2)、白细胞介素-6 (IL-6)、白细胞介素-10 (IL-10)水平变化情况。结果观察组患者创面愈合时间明显短于对照组(t=4.066,P=0.000),治疗后BSHS-B评分明显高于对照组(t=4.944,P=0.000);治疗第7天,观察组患者血清TNF-α、IL-6水平明显低于对照组(t=7.617、4.832,P均=0.000),血清IL-2、IL-10水平明显高于对照组(t=5.310、5.626,P均=0.000)。结论与rhEGF凝胶单独应用相比,黄连解毒汤与rhEGF凝胶联合应用可有效促进深Ⅱ度烧伤创面愈合,提高患者生活质量,其作用机制可能与黄连解毒汤能够降低患者炎症反应程度有关。展开更多
文摘The human epidermal growth factor gene was synthesized with DNA synthesizer andby enzymes.Computer assisted to design the gene sequence and the restriction enzyme sites,andto elhninate the repeated and self-complementary sequences.So that multiple doning and gene ex-pression were available for the designed gene sequence.The whole gene was formed by annealing8 chemically synthesized oligodeoxynucleotide fragments,enzymatically filling up the 4 twenty-basespaces and ligating the nicks,and was inserted into EcoR I and HInc Ⅱ sites ofplasmid pUC12.The recombinant plasmid was transformed into E.coli JM103 and 200 whitedones were obtained by X-gal and ampicilin screening.The positive clones were isolated andcharacterized by restriction enzyme analysis and DNA sequencing.
基金the National Natural Science Foundation of China (Grant No. 50373033)the Applied Foundational Research Key Fund of Tianjin (Grant No. 05YFJZJC01001)the International Cooperative Fund of Tianjin (Grant No. 05YFGHHZ20070)
文摘In this study the w/o/w extraction–evaporation technique was adopted to prepare poly(lactic-co-glycolic acid) (PLGA) microspheres loading recombinant human epidermal growth factor (rhEGF). The micro-spheres were characterized for morphology by transmission electron microscopy (TEM) and particle size distribution. The release performances, the proliferation effects and therapeutic effects of rhEGF-loaded PLGA microspheres were all studied. The results showed that these spherical micro-spheres had a narrow size distribution and a high drug encapsulation efficiency (85.6%). RhEGF-loaded microspheres enhanced the growth rate of fibroblasts and wound healing more efficiently than pure rhEGF. The number of the proliferating cell nuclear antigen (PCNA) in the epidermis layer with the mi-crosphere treatment was significantly larger than those of the control groups. Overall locally sustained delivery of rhEGF from biodegradable PLGA microspheres may serve as a novel therapeutic strategy for diabetic ulcer repair.
文摘[目的]研究重组人表皮生长因子(recombinant human epidermal growth factor,rhEGF)在治疗外伤性鼓膜穿孔过程中的作用。[方法]对门诊就诊的外伤性鼓膜穿孔患者123例患者,随机的分别采用4种不同的治疗方法(即常规治疗方法、贴膜法、应用rhEGF喷剂法、贴膜和rhEGF喷剂联合应用法),定期观察鼓膜愈合情况、瘢痕的轻重,记录鼓膜完全愈合的时间,按鼓膜穿孔的大、中、小,分3组进行统计学处理。[结果]对小穿孔4种治疗方法差异无显著性意义(愈合时间,P>0.05),对中等穿孔,传统组、贴膜组与rhEGF组、贴膜+rhEGF组之间分别两两比较差异有显著性意义(P<0.05)。对大穿孔,传统组、贴膜组、贴膜+rhEGF组三者之间两两比较差异均有显著性意义(P<0.05)。[结论]外伤性鼓膜穿孔中的中等穿孔和大穿孔应用rhEGF或rhEGF与贴膜联合应用,可以显著地缩短愈合时间,并减轻鼓膜瘢痕,提高治愈率。
文摘目的观察黄连解毒汤联合重组人表皮生长因子(recombinant human epidermal growth factor,rhEGF)凝胶治疗深Ⅱ度烧伤的临床疗效以及对患者血清炎症因子水平的影响。方法选取2018年1月至2019年1月重庆市开州区人民医院收治的64例深Ⅱ度烧伤患者作为研究对象,按照不同干预方法将其分为观察组(32例)与对照组(32例),观察组患者予以黄连解毒汤联合rhEGF凝胶治疗局部创面,对照组患者单独予以rhEGF凝胶治疗局部创面,对比两组患者创面愈合时间、简明烧伤健康量表(burn specific health scale-brief,BSHS-B)评分以及血清肿瘤坏死因子-α(TNF-α)、白细胞介素-2 (IL-2)、白细胞介素-6 (IL-6)、白细胞介素-10 (IL-10)水平变化情况。结果观察组患者创面愈合时间明显短于对照组(t=4.066,P=0.000),治疗后BSHS-B评分明显高于对照组(t=4.944,P=0.000);治疗第7天,观察组患者血清TNF-α、IL-6水平明显低于对照组(t=7.617、4.832,P均=0.000),血清IL-2、IL-10水平明显高于对照组(t=5.310、5.626,P均=0.000)。结论与rhEGF凝胶单独应用相比,黄连解毒汤与rhEGF凝胶联合应用可有效促进深Ⅱ度烧伤创面愈合,提高患者生活质量,其作用机制可能与黄连解毒汤能够降低患者炎症反应程度有关。
