To investigate the role of AQP9 in brain edema, the expression of AQP9 in an infectious rat brain edema model induced by the injection of lipopolysaccharide (LPS) was examined. Immuno-histochemistry and reverse transc...To investigate the role of AQP9 in brain edema, the expression of AQP9 in an infectious rat brain edema model induced by the injection of lipopolysaccharide (LPS) was examined. Immuno-histochemistry and reverse transcription-polymerase chain reaction (RT-PCR) analysis demonstrated that the expressions of AQP9 mRNA and protein at all observed intervals were significantly increased in LPS-treated animals in comparison with the control animals. Time-course analysis showed that the first signs of blood-brain barrier disruption and the increase of brain water content in LPS-treated animals were evident 6 h after LPS injection, with maximum value appearing at 12 h, which coincided with the expression profiles of AQP9 mRNA and protein in LPS-treated animals. The further correlation analysis revealed strong positive correlations among the brain water content, the disruption of the blood-brain barrier and the enhanced expressions of AQP9 mRNA and protein in LPS-treated animals. These results suggested that the regulation of AQP9 expression may play important roles in water movement and in brain metabolic homeostasis associated with the pathophysiology of brain edema induced by LPS injection.展开更多
目的探讨外周血Septin9基因甲基化(mSEPT9)检测在结直肠腺瘤诊断中的预测意义。方法收集2020年10月至2022年5月在昆明市第一人民医院病理科诊断为结直肠腺瘤的31名患者作为实验组,21例肠镜阴性受试者(消化科门诊患者)作为对照组。对2组...目的探讨外周血Septin9基因甲基化(mSEPT9)检测在结直肠腺瘤诊断中的预测意义。方法收集2020年10月至2022年5月在昆明市第一人民医院病理科诊断为结直肠腺瘤的31名患者作为实验组,21例肠镜阴性受试者(消化科门诊患者)作为对照组。对2组人员进行外周血mSEPT9检测,并收集其相应外周血CEA检测结果,对检测结果采用受试者特征曲线进行统计分析。结果mSEPT9检测对腺瘤的曲线下预测面积(AREA of the ROC:AUC)为0.7205(P<0.05),分界值(CT值)为39.55,此时对应的敏感度为90.91%,特异度为56.67%;CEA检测对腺瘤的AUC为0.5333(P>0.05)。结论外周血mSEPT9检测筛查结直肠腺瘤效果优于外周血CEA肿瘤标记物,具有较好的敏感度及特异度,一定程度上对mSEPT9筛查阳性人群再行侵入性肠镜检查,更易为该类人群接受且可早期筛查结直肠腺瘤。展开更多
基金supported by a grant for Scientific Research Program from the Health Bureau of Henan Province (No.200202)
文摘To investigate the role of AQP9 in brain edema, the expression of AQP9 in an infectious rat brain edema model induced by the injection of lipopolysaccharide (LPS) was examined. Immuno-histochemistry and reverse transcription-polymerase chain reaction (RT-PCR) analysis demonstrated that the expressions of AQP9 mRNA and protein at all observed intervals were significantly increased in LPS-treated animals in comparison with the control animals. Time-course analysis showed that the first signs of blood-brain barrier disruption and the increase of brain water content in LPS-treated animals were evident 6 h after LPS injection, with maximum value appearing at 12 h, which coincided with the expression profiles of AQP9 mRNA and protein in LPS-treated animals. The further correlation analysis revealed strong positive correlations among the brain water content, the disruption of the blood-brain barrier and the enhanced expressions of AQP9 mRNA and protein in LPS-treated animals. These results suggested that the regulation of AQP9 expression may play important roles in water movement and in brain metabolic homeostasis associated with the pathophysiology of brain edema induced by LPS injection.
文摘目的探讨外周血Septin9基因甲基化(mSEPT9)检测在结直肠腺瘤诊断中的预测意义。方法收集2020年10月至2022年5月在昆明市第一人民医院病理科诊断为结直肠腺瘤的31名患者作为实验组,21例肠镜阴性受试者(消化科门诊患者)作为对照组。对2组人员进行外周血mSEPT9检测,并收集其相应外周血CEA检测结果,对检测结果采用受试者特征曲线进行统计分析。结果mSEPT9检测对腺瘤的曲线下预测面积(AREA of the ROC:AUC)为0.7205(P<0.05),分界值(CT值)为39.55,此时对应的敏感度为90.91%,特异度为56.67%;CEA检测对腺瘤的AUC为0.5333(P>0.05)。结论外周血mSEPT9检测筛查结直肠腺瘤效果优于外周血CEA肿瘤标记物,具有较好的敏感度及特异度,一定程度上对mSEPT9筛查阳性人群再行侵入性肠镜检查,更易为该类人群接受且可早期筛查结直肠腺瘤。