Background:Dihydroartemisinin(DHA)is reported to be a potential anticancer agent,and the mechanisms underlying the effects of DHA on diffuse large B cell lymphoma however are still obscure.This study aimed to assess t...Background:Dihydroartemisinin(DHA)is reported to be a potential anticancer agent,and the mechanisms underlying the effects of DHA on diffuse large B cell lymphoma however are still obscure.This study aimed to assess the antitumor effect of DHA on diffuse large B cell lymphoma cells and to determine the potential underlying mechanisms of DHA-induced cell apoptosis.Methods:Here,the Cell Counting Kit 8 assay was conducted to study cell proliferation.We performed Annexin V-FITC/propidium iodide staining,real-time polymerase chain reaction,and western blot analysis to analyze cell apoptosis and potential molecular mechanisms.Results:The results showed that DHA substantially suppressed cell proliferation and induced cell apoptosis in vitro in a time-and concentration-dependent fashion.Moreover,STAT3 activity could be inhibited after stimulation with DHA.Conclusion:These results imply that the underlying anti-tumoral effect of DHA may increase apoptosis in diffuse large B cell lymphoma cells via the STAT3 signaling pathway.In addition,DHA might be an effective drug for diffuse large B cell lymphoma therapy.展开更多
目的探讨MRI多参数在鉴别嗅神经母细胞瘤(olfactory neuroblastoma,ONB)和鼻腔鼻窦弥漫大B细胞淋巴瘤(diffusion large B cell lymphoma,DLBCL)中的价值。方法34例鼻腔鼻窦ONB和29例DLBCL患者治疗前行MRI检查。MRI评估指标包括常规征像...目的探讨MRI多参数在鉴别嗅神经母细胞瘤(olfactory neuroblastoma,ONB)和鼻腔鼻窦弥漫大B细胞淋巴瘤(diffusion large B cell lymphoma,DLBCL)中的价值。方法34例鼻腔鼻窦ONB和29例DLBCL患者治疗前行MRI检查。MRI评估指标包括常规征像和半定量参数。连续变量比较采用独立样本t检验或秩和检验,分类变量比较采用χ^(2)检验。二元Logistic回归用于识别最有诊断能力的MRI指标。结果ONB T2WI呈等稍高信号,累及嗅裂,易形成颅内肿块(P=0.004);DLBCL T2WI呈等略低信号(P<0.001),常累及上颌窦、眼眶(P<0.001,P=0.024)。ONB的鼻甲外移、边缘分叶征较DLBCL多见(P=0.001,P=0.004)。ONB的ADC_(ave)值更高(P<0.001),CI_(max)、WR更大(P<0.001、P=0.011),TTP小(P=0.003),TIC曲线流出型更多(P=0.022)。Logistic回归显示部位(累及嗅裂或上颌窦)、T2WI信号、ADC0.82值及以TTP52是鉴别ONB和DLBCL的独立影响因素。结论MRI的多参数联合有助于鉴别鼻腔鼻窦ONB和DLBCL。展开更多
基金supported by the Shandong Provincial Natural Science Foundation of China(ZR2019MH096).
文摘Background:Dihydroartemisinin(DHA)is reported to be a potential anticancer agent,and the mechanisms underlying the effects of DHA on diffuse large B cell lymphoma however are still obscure.This study aimed to assess the antitumor effect of DHA on diffuse large B cell lymphoma cells and to determine the potential underlying mechanisms of DHA-induced cell apoptosis.Methods:Here,the Cell Counting Kit 8 assay was conducted to study cell proliferation.We performed Annexin V-FITC/propidium iodide staining,real-time polymerase chain reaction,and western blot analysis to analyze cell apoptosis and potential molecular mechanisms.Results:The results showed that DHA substantially suppressed cell proliferation and induced cell apoptosis in vitro in a time-and concentration-dependent fashion.Moreover,STAT3 activity could be inhibited after stimulation with DHA.Conclusion:These results imply that the underlying anti-tumoral effect of DHA may increase apoptosis in diffuse large B cell lymphoma cells via the STAT3 signaling pathway.In addition,DHA might be an effective drug for diffuse large B cell lymphoma therapy.
文摘目的探讨MRI多参数在鉴别嗅神经母细胞瘤(olfactory neuroblastoma,ONB)和鼻腔鼻窦弥漫大B细胞淋巴瘤(diffusion large B cell lymphoma,DLBCL)中的价值。方法34例鼻腔鼻窦ONB和29例DLBCL患者治疗前行MRI检查。MRI评估指标包括常规征像和半定量参数。连续变量比较采用独立样本t检验或秩和检验,分类变量比较采用χ^(2)检验。二元Logistic回归用于识别最有诊断能力的MRI指标。结果ONB T2WI呈等稍高信号,累及嗅裂,易形成颅内肿块(P=0.004);DLBCL T2WI呈等略低信号(P<0.001),常累及上颌窦、眼眶(P<0.001,P=0.024)。ONB的鼻甲外移、边缘分叶征较DLBCL多见(P=0.001,P=0.004)。ONB的ADC_(ave)值更高(P<0.001),CI_(max)、WR更大(P<0.001、P=0.011),TTP小(P=0.003),TIC曲线流出型更多(P=0.022)。Logistic回归显示部位(累及嗅裂或上颌窦)、T2WI信号、ADC0.82值及以TTP52是鉴别ONB和DLBCL的独立影响因素。结论MRI的多参数联合有助于鉴别鼻腔鼻窦ONB和DLBCL。
