Objectives:Photodynamic therapy(PDT)is a minimally invasive method used in the treatment of various cancers and skin diseases,but it is not widely used in bone cancer,where the current therapy is often not effective a...Objectives:Photodynamic therapy(PDT)is a minimally invasive method used in the treatment of various cancers and skin diseases,but it is not widely used in bone cancer,where the current therapy is often not effective and accompanied by side effects.Alternative and more effective therapies like PDT are needed.In this in-vitro study,the effect of the photosensitizer(PS)chlorin e6(Ce6)on cancerous bone tumor cells using PDT was examined.Methods:A total of 27 tissue specimens from patients with primary bone cancers or bone metastases of different origins were genetically characterized and treated with PDT.Following a 24-h incubation,cell viability was determined,and the effect of PDT on cell migration was analyzed over 48 h.Results:We could demonstrate that the effect on proliferation of PDT in combination with the PS Ce6 was best in cells isolated from primary osteosarcoma and in bone metastases from mammary carcinomas.Besides proliferation,PDT was also effective in inhibiting the migration of these cells.A statistically significant correlation between the PDT effect and CD164 gene expression was detected,indicating that a high expression of this gene could result in a higher effectiveness of the photodynamic treatment.Conclusion:This study analyzes for the first time the effect of PDT in bone cancers and metastases and shows the potential of treating these cancer types with Ce6 PDT.展开更多
目的:通过原位杂交检测技术探索高危型人乳头瘤病毒(HR-HPV)分型检测阴性的子宫颈高级别鳞状上皮内病变(HSIL)是否由人乳头瘤病毒(HPV)感染引起,进而为子宫颈HSIL的精确诊断及治疗提供新思路。方法:收集2020年1月至2022年10月就诊于山...目的:通过原位杂交检测技术探索高危型人乳头瘤病毒(HR-HPV)分型检测阴性的子宫颈高级别鳞状上皮内病变(HSIL)是否由人乳头瘤病毒(HPV)感染引起,进而为子宫颈HSIL的精确诊断及治疗提供新思路。方法:收集2020年1月至2022年10月就诊于山东第二医科大学附属医院妇科行子宫颈活检或手术治疗的305例子宫颈HSIL患者的病历资料,其中HR-HPV分型检测阴性患者为研究组(15例),阳性患者为对照组(290例)。采用RNAscope原位杂交技术检测两组患者样本中HPV E6/E7 m RNA的表达,并使用染色强度半定量评分分析HPV E6/E7 m RNA的表达情况,同时采用免疫组织化学(IHC)方法检测p16、Ki-67的表达情况。结果:(1)305例HSIL患者中,15例(4.9%)HR-HPV分型检测为阴性。(2)研究组中73.3%(11/15)HPV E6/E7 m RNA呈阳性表达,与对照组100.0%(290/290)比较,差异有统计学意义(P<0.001)。(3)研究组p16的阳性表达率与对照组比较,差异有统计学意义(93.3%vs.100.0%,P=0.049),两组Ki-67阳性表达率均为100.0%。(4)组织病理学类型为子宫颈上皮内瘤变(CIN)2的样本中,研究组HPV E6/E7 m RNA总体评分明显低于对照组,差异有统计学意义(P=0.004);CIN3的样本中,研究组HPV E6/E7 m RNA总体评分虽低于对照组,但差异无统计学意义(P=0.158)。结论:子宫颈癌筛查中,单纯采用HR-HPV分型检测可能导致4.9%的HSIL患者因结果阴性而出现漏诊或误诊。HPV E6/E7 m RNA原位杂交检测技术可能有助于降低HR-HPV分型检测在HSIL中的假阴性率,并辅助预测子宫颈病变的发展方向,进而为实现个体化精准治疗提供新的思路。展开更多
文摘Objectives:Photodynamic therapy(PDT)is a minimally invasive method used in the treatment of various cancers and skin diseases,but it is not widely used in bone cancer,where the current therapy is often not effective and accompanied by side effects.Alternative and more effective therapies like PDT are needed.In this in-vitro study,the effect of the photosensitizer(PS)chlorin e6(Ce6)on cancerous bone tumor cells using PDT was examined.Methods:A total of 27 tissue specimens from patients with primary bone cancers or bone metastases of different origins were genetically characterized and treated with PDT.Following a 24-h incubation,cell viability was determined,and the effect of PDT on cell migration was analyzed over 48 h.Results:We could demonstrate that the effect on proliferation of PDT in combination with the PS Ce6 was best in cells isolated from primary osteosarcoma and in bone metastases from mammary carcinomas.Besides proliferation,PDT was also effective in inhibiting the migration of these cells.A statistically significant correlation between the PDT effect and CD164 gene expression was detected,indicating that a high expression of this gene could result in a higher effectiveness of the photodynamic treatment.Conclusion:This study analyzes for the first time the effect of PDT in bone cancers and metastases and shows the potential of treating these cancer types with Ce6 PDT.
文摘目的:通过原位杂交检测技术探索高危型人乳头瘤病毒(HR-HPV)分型检测阴性的子宫颈高级别鳞状上皮内病变(HSIL)是否由人乳头瘤病毒(HPV)感染引起,进而为子宫颈HSIL的精确诊断及治疗提供新思路。方法:收集2020年1月至2022年10月就诊于山东第二医科大学附属医院妇科行子宫颈活检或手术治疗的305例子宫颈HSIL患者的病历资料,其中HR-HPV分型检测阴性患者为研究组(15例),阳性患者为对照组(290例)。采用RNAscope原位杂交技术检测两组患者样本中HPV E6/E7 m RNA的表达,并使用染色强度半定量评分分析HPV E6/E7 m RNA的表达情况,同时采用免疫组织化学(IHC)方法检测p16、Ki-67的表达情况。结果:(1)305例HSIL患者中,15例(4.9%)HR-HPV分型检测为阴性。(2)研究组中73.3%(11/15)HPV E6/E7 m RNA呈阳性表达,与对照组100.0%(290/290)比较,差异有统计学意义(P<0.001)。(3)研究组p16的阳性表达率与对照组比较,差异有统计学意义(93.3%vs.100.0%,P=0.049),两组Ki-67阳性表达率均为100.0%。(4)组织病理学类型为子宫颈上皮内瘤变(CIN)2的样本中,研究组HPV E6/E7 m RNA总体评分明显低于对照组,差异有统计学意义(P=0.004);CIN3的样本中,研究组HPV E6/E7 m RNA总体评分虽低于对照组,但差异无统计学意义(P=0.158)。结论:子宫颈癌筛查中,单纯采用HR-HPV分型检测可能导致4.9%的HSIL患者因结果阴性而出现漏诊或误诊。HPV E6/E7 m RNA原位杂交检测技术可能有助于降低HR-HPV分型检测在HSIL中的假阴性率,并辅助预测子宫颈病变的发展方向,进而为实现个体化精准治疗提供新的思路。
