The cytotoxic effect of Pingyangmycin (PYM) (Bleomycin A5) on the laryngeal cancer Hep 2 line in vitro was observed with two experimental methods of MTT colorimetric assay and living cell count.Results:(1) The PYM val...The cytotoxic effect of Pingyangmycin (PYM) (Bleomycin A5) on the laryngeal cancer Hep 2 line in vitro was observed with two experimental methods of MTT colorimetric assay and living cell count.Results:(1) The PYM value of IC50 (index of light density of PYM inhibited Hep 2 cell line) was 35μg/ml by MTT colorime tric assay.It showed that the proliferation activity of Hep 2 cell was inhibited strongly when the concentration of PYM increased.(2) The assay of living cell count showed that the livability of the Hep 2 was 46% when the concetration of the PYM in 30μg/ml.In our study,it was found that the PYM could induce the apoptosis effect of the Hep 2 cell in a certain range.展开更多
目的探讨血清代替血浆检测SEPT9基因甲基化在结直肠癌(CRC)诊断中的价值。方法收集70例CRC患者、38例腺瘤或息肉患者及15例其他肠道疾病患者血清样本。用Epi pro Colon 2.0试剂盒进行SEPT9基因甲基化检测,依据肠镜病理诊断进行验证,比...目的探讨血清代替血浆检测SEPT9基因甲基化在结直肠癌(CRC)诊断中的价值。方法收集70例CRC患者、38例腺瘤或息肉患者及15例其他肠道疾病患者血清样本。用Epi pro Colon 2.0试剂盒进行SEPT9基因甲基化检测,依据肠镜病理诊断进行验证,比较SEPT9、癌胚抗原(CEA)和粪便潜血试验(FOBT)的敏感性和特异性,并进行统计学分析。结果 CRC患者血清SEPT9的阳性率(81.4%)明显高于对照组(13.2%),差异有统计学意义(χ2=92.814,P〈0.01)。CRC患者血清SEPT9的敏感性为81.4%(95%CI:72.4%-90.4%)、特异性为86.7%(95%CI:72.4%-100%)。临床分期为Ⅰ期的CRC患者SEPT9阳性率为42.9%,Ⅱ期为88.9%,Ⅲ期为82.4%,Ⅳ期为100%,差异有统计学意义(χ2=16.572,P〈0.01)。SEPT9的ROC曲线下面积(AUCROC)为0.841,明显高于CEA(0.716)和FOBT(0.792)。3者联合检测AUCROC可达0.935。结论血清SEPT9基因甲基化的检测是早期诊断CRC的有效方法,联合检测CEA及FOBT可以提高诊断效能。展开更多
文摘The cytotoxic effect of Pingyangmycin (PYM) (Bleomycin A5) on the laryngeal cancer Hep 2 line in vitro was observed with two experimental methods of MTT colorimetric assay and living cell count.Results:(1) The PYM value of IC50 (index of light density of PYM inhibited Hep 2 cell line) was 35μg/ml by MTT colorime tric assay.It showed that the proliferation activity of Hep 2 cell was inhibited strongly when the concentration of PYM increased.(2) The assay of living cell count showed that the livability of the Hep 2 was 46% when the concetration of the PYM in 30μg/ml.In our study,it was found that the PYM could induce the apoptosis effect of the Hep 2 cell in a certain range.
文摘目的探讨血清代替血浆检测SEPT9基因甲基化在结直肠癌(CRC)诊断中的价值。方法收集70例CRC患者、38例腺瘤或息肉患者及15例其他肠道疾病患者血清样本。用Epi pro Colon 2.0试剂盒进行SEPT9基因甲基化检测,依据肠镜病理诊断进行验证,比较SEPT9、癌胚抗原(CEA)和粪便潜血试验(FOBT)的敏感性和特异性,并进行统计学分析。结果 CRC患者血清SEPT9的阳性率(81.4%)明显高于对照组(13.2%),差异有统计学意义(χ2=92.814,P〈0.01)。CRC患者血清SEPT9的敏感性为81.4%(95%CI:72.4%-90.4%)、特异性为86.7%(95%CI:72.4%-100%)。临床分期为Ⅰ期的CRC患者SEPT9阳性率为42.9%,Ⅱ期为88.9%,Ⅲ期为82.4%,Ⅳ期为100%,差异有统计学意义(χ2=16.572,P〈0.01)。SEPT9的ROC曲线下面积(AUCROC)为0.841,明显高于CEA(0.716)和FOBT(0.792)。3者联合检测AUCROC可达0.935。结论血清SEPT9基因甲基化的检测是早期诊断CRC的有效方法,联合检测CEA及FOBT可以提高诊断效能。