Myoepithelioma(ME)is a rare tumor composed of myoepithelial cells that usually surround glandular tissue.MEs differ from mixed tumors as they present minimal or no ductal differentiation^([1]).MEs can originate from s...Myoepithelioma(ME)is a rare tumor composed of myoepithelial cells that usually surround glandular tissue.MEs differ from mixed tumors as they present minimal or no ductal differentiation^([1]).MEs can originate from soft tissue and bones,but histogenesis remains uncertain.展开更多
目的观察角膜绷带镜对生物工程角膜移植术后的临床治疗作用。方法收集我院2017年1月至2018年6月住院并使用生物工程角膜进行板层角膜移植手术治疗的感染性角膜溃疡患者30例30眼的临床资料,随机分为A、B两组,各15例。A组角膜上皮愈合后...目的观察角膜绷带镜对生物工程角膜移植术后的临床治疗作用。方法收集我院2017年1月至2018年6月住院并使用生物工程角膜进行板层角膜移植手术治疗的感染性角膜溃疡患者30例30眼的临床资料,随机分为A、B两组,各15例。A组角膜上皮愈合后给予戴角膜绷带镜联合滴眼液点眼治疗,2周更换1次,术后3个月拆线后停用。B组患者不戴角膜绷带镜,药物治疗同A组。观察生物工程角膜移植术后角膜植片上皮化时间,比较术后第1、2、3、4周两组角膜植片水肿程度,比较术后第1、2、3个月两组角膜植片上皮完整性和泪膜破裂时间(breakup time of tear film,BUT),比较两组角膜植片水肿消退时间和术后3个月两组角膜植片存活率。结果术后3~5 d角膜植片上皮化,2~4周植片水肿消退。A组患者术后第2~3周角膜植片水肿消退,B组患者第3~4周角膜植片水肿消退,时间长于A组(P <0.001),术后第2~3周A组角膜植片水肿程度明显轻于B组(第2周P=0.002,第3周P <0.001)。术后第1、2、3个月时A组患者角膜荧光素染色评分均低于B组(均P <0.001),BUT时长高于B组(P=0.009、0.002、0.33)。A组患者中1例未按时复诊戴角膜绷带镜近5周,继发细菌感染,退出研究,术后3个月A组植片存活率93.3%(14/15);B组患者有2例1个月后出现角膜上皮无菌性缺损,另有1例术后2个月出现角膜溶解,3例均退出研究,术后3个月B组植片存活率80.0%(12/15),与A组相比差异无统计学意义(P=0.283)。结论生物工程角膜上皮化后戴角膜绷带镜可加速角膜植片水肿消退,保护角膜上皮完整性,维持眼表泪液稳定,有利于维护眼表微环境健康,对生物工程角膜术后角膜植片修复有明显促进作用。展开更多
Objective:The study was undertaken to evaluate the wound healing profile of alcoholic extract of Abroma augusta and its effect on dexamethasone suppressed wound healing in Wistar rats.Methods:An alcoholic extract of A...Objective:The study was undertaken to evaluate the wound healing profile of alcoholic extract of Abroma augusta and its effect on dexamethasone suppressed wound healing in Wistar rats.Methods:An alcoholic extract of Abroma augusta was prepared.Three models were used - incision,excision and dead space wound models. Four groups of animals were used for each model.They were administered 2%gum acacia(orally),alcoholic extract of Abroma augusta(orally),dexamethasone(intramuscularly) and combination of Abroma augusta(orally) with dexamethasone(intramuscularly) respectively.The parameters studied included breaking strength of incision wound,period of epithelization and wound contraction rate in the excision wound,breaking strength,dry weight and hydroxyproline content of granulation tissue in dead space wound.Results:The breaking strength of incision wound of Abroma augusta treated group was significantly increased(P <0.001 ) while that of dexamethasone treated animals was significantly decreased(P<0.001) as compared to control. Coadministration of dexamethasone and Abroma augusta significantly reversed the dexamethasone suppressed wound healing in incision wound model(P< 0.001 ).Animals treated with both dexamethasone and Abroma augusta also showed significant(P <0.004) increase in the breaking strength of granulation tissue in the dead space wound and a significant(P <0.011) reduction in the period of epithelization in the excision wound as compared to rats treated with dexamethasone alone.The rate of wound contraction was not significantly altered in any of the groups.Conclusion:The alcoholic extract of Abroma augusta was found to reverse dexamethasone suppressed wound healing.展开更多
In order to study and copare the diffe-rence of DNA repair synthesis induced bychemical carcinogens in human respiratoryepithelial cells and fibroblast cells,the nasopharyngeal and
The carcinogenic effect of BaP on the re-spiratory system have been extensively inves-tigated.It has not been reported that thehuman respiratory tract(HRT)would undergopreneoplastic lesions experimentally afterexposur...The carcinogenic effect of BaP on the re-spiratory system have been extensively inves-tigated.It has not been reported that thehuman respiratory tract(HRT)would undergopreneoplastic lesions experimentally afterexposure to BaP,because of being in diffi-culty to obtain the studying materials ofnormal HRT.展开更多
基金supported by a major project grant from the national science and technology of Liaoning Province[No.2020JH1/10300001]。
文摘Myoepithelioma(ME)is a rare tumor composed of myoepithelial cells that usually surround glandular tissue.MEs differ from mixed tumors as they present minimal or no ductal differentiation^([1]).MEs can originate from soft tissue and bones,but histogenesis remains uncertain.
文摘目的观察角膜绷带镜对生物工程角膜移植术后的临床治疗作用。方法收集我院2017年1月至2018年6月住院并使用生物工程角膜进行板层角膜移植手术治疗的感染性角膜溃疡患者30例30眼的临床资料,随机分为A、B两组,各15例。A组角膜上皮愈合后给予戴角膜绷带镜联合滴眼液点眼治疗,2周更换1次,术后3个月拆线后停用。B组患者不戴角膜绷带镜,药物治疗同A组。观察生物工程角膜移植术后角膜植片上皮化时间,比较术后第1、2、3、4周两组角膜植片水肿程度,比较术后第1、2、3个月两组角膜植片上皮完整性和泪膜破裂时间(breakup time of tear film,BUT),比较两组角膜植片水肿消退时间和术后3个月两组角膜植片存活率。结果术后3~5 d角膜植片上皮化,2~4周植片水肿消退。A组患者术后第2~3周角膜植片水肿消退,B组患者第3~4周角膜植片水肿消退,时间长于A组(P <0.001),术后第2~3周A组角膜植片水肿程度明显轻于B组(第2周P=0.002,第3周P <0.001)。术后第1、2、3个月时A组患者角膜荧光素染色评分均低于B组(均P <0.001),BUT时长高于B组(P=0.009、0.002、0.33)。A组患者中1例未按时复诊戴角膜绷带镜近5周,继发细菌感染,退出研究,术后3个月A组植片存活率93.3%(14/15);B组患者有2例1个月后出现角膜上皮无菌性缺损,另有1例术后2个月出现角膜溶解,3例均退出研究,术后3个月B组植片存活率80.0%(12/15),与A组相比差异无统计学意义(P=0.283)。结论生物工程角膜上皮化后戴角膜绷带镜可加速角膜植片水肿消退,保护角膜上皮完整性,维持眼表泪液稳定,有利于维护眼表微环境健康,对生物工程角膜术后角膜植片修复有明显促进作用。
文摘Objective:The study was undertaken to evaluate the wound healing profile of alcoholic extract of Abroma augusta and its effect on dexamethasone suppressed wound healing in Wistar rats.Methods:An alcoholic extract of Abroma augusta was prepared.Three models were used - incision,excision and dead space wound models. Four groups of animals were used for each model.They were administered 2%gum acacia(orally),alcoholic extract of Abroma augusta(orally),dexamethasone(intramuscularly) and combination of Abroma augusta(orally) with dexamethasone(intramuscularly) respectively.The parameters studied included breaking strength of incision wound,period of epithelization and wound contraction rate in the excision wound,breaking strength,dry weight and hydroxyproline content of granulation tissue in dead space wound.Results:The breaking strength of incision wound of Abroma augusta treated group was significantly increased(P <0.001 ) while that of dexamethasone treated animals was significantly decreased(P<0.001) as compared to control. Coadministration of dexamethasone and Abroma augusta significantly reversed the dexamethasone suppressed wound healing in incision wound model(P< 0.001 ).Animals treated with both dexamethasone and Abroma augusta also showed significant(P <0.004) increase in the breaking strength of granulation tissue in the dead space wound and a significant(P <0.011) reduction in the period of epithelization in the excision wound as compared to rats treated with dexamethasone alone.The rate of wound contraction was not significantly altered in any of the groups.Conclusion:The alcoholic extract of Abroma augusta was found to reverse dexamethasone suppressed wound healing.
文摘In order to study and copare the diffe-rence of DNA repair synthesis induced bychemical carcinogens in human respiratoryepithelial cells and fibroblast cells,the nasopharyngeal and
文摘The carcinogenic effect of BaP on the re-spiratory system have been extensively inves-tigated.It has not been reported that thehuman respiratory tract(HRT)would undergopreneoplastic lesions experimentally afterexposure to BaP,because of being in diffi-culty to obtain the studying materials ofnormal HRT.
