目的探讨尿液中核酸氧化代谢产物8-oxo-Gsn和8-oxo-d Gsn对HBV感染引起肝损伤程度的评估价值。方法收集笔者医院94例慢性乙型肝炎(以下简称慢乙肝)患者行超声引导下肝穿刺活检前的尿液,95例健康者以及25例乙肝表面携带者的随机尿液,采...目的探讨尿液中核酸氧化代谢产物8-oxo-Gsn和8-oxo-d Gsn对HBV感染引起肝损伤程度的评估价值。方法收集笔者医院94例慢性乙型肝炎(以下简称慢乙肝)患者行超声引导下肝穿刺活检前的尿液,95例健康者以及25例乙肝表面携带者的随机尿液,采用同位素稀释高效液相-串联质谱法(ID-LC-MS/MS)分析尿液中DNA氧化标志物8-oxod Gsn和RNA氧化标志物8-oxo-Gsn,并结合病理结果和生化指标(ALT和AST),分析各指标之间的相关性,通过ROC曲线评估二者对肝损伤程度的预测价值,并分析8-oxo-Gsn和8-oxo-d Gsn在不同炎症活动度和不同纤维化程度患者中的水平差异。结果实验组中,88.5%(46/52)的男性8-oxo-Gsn高于正常对照组,85.7%(36/42)的女性8-oxo-Gsn高于正常对照组;肝脏炎症程度高的患者(G_3~G_4)尿液中RNA氧化标志物8-oxo-Gsn显著高于炎症程度低的患者(G_0~G_2)(4.28 vs 3.26,χ~2=11.117,P=0.009),纤维化程度高的患者8-oxo-Gsn水平也高于纤维化程度低的患者(3.66 vs 3.29),但未达到显著性水平(χ~2=3.626,P=0.323)。尿液中RNA氧化标志物8-oxo-Gsn对肝脏炎症程度有较好的预测价值(敏感度为82.4%,特异性为75%,AUC=0.813),对纤维化程度有较好的预测价值(敏感度为83.3%,特异性为77.1%,AUC=0.824)。结论尿液中RNA氧化标志物8-oxo-Gsn可能是HBV感染引起的肝损伤严重程度的评估指标。展开更多
Radiation-induced lung injury is one of the main dose limiting factors for thoracic radiation therapy.Gelsolin(GSN) is a widespread,multifunctional regulator of cellular structure and metabolism.In this work,the roles...Radiation-induced lung injury is one of the main dose limiting factors for thoracic radiation therapy.Gelsolin(GSN) is a widespread,multifunctional regulator of cellular structure and metabolism.In this work,the roles of GSN in radiation-induced lung injury in Balb/c mice were studied.The GSN levels in plasma reduced progressively in 72 hours after irradiation,and then increased gradually.GSN contents in the bronchoalveolar lavage(BAL) fluid increased after thoracic irradiation,whereas mRNA levels of GSN in the lung tissue decreased significantly within 24 hours after irradiation and then increased again.Mice were intravenously injected with 50 ug GSN antibody 0.5 hour before 20 Gy of thoracic irradiation.GSN antibody pretreatment increased lung inflammation,protein concentration in the BAL fluid and leukocytes infiltration in the irradiated mice.The activities of superoxidase dismutase(SOD) in the plasma and the BAL fluid in irradiated mice injected with GSN antibody were less than that of control groups,whereas the levels of malondialdehyde(MDA)increased.These results suggest that pretreatment of GSN antibody may aggravate radiation-induced pneumonitis.展开更多
文摘目的探讨尿液中核酸氧化代谢产物8-oxo-Gsn和8-oxo-d Gsn对HBV感染引起肝损伤程度的评估价值。方法收集笔者医院94例慢性乙型肝炎(以下简称慢乙肝)患者行超声引导下肝穿刺活检前的尿液,95例健康者以及25例乙肝表面携带者的随机尿液,采用同位素稀释高效液相-串联质谱法(ID-LC-MS/MS)分析尿液中DNA氧化标志物8-oxod Gsn和RNA氧化标志物8-oxo-Gsn,并结合病理结果和生化指标(ALT和AST),分析各指标之间的相关性,通过ROC曲线评估二者对肝损伤程度的预测价值,并分析8-oxo-Gsn和8-oxo-d Gsn在不同炎症活动度和不同纤维化程度患者中的水平差异。结果实验组中,88.5%(46/52)的男性8-oxo-Gsn高于正常对照组,85.7%(36/42)的女性8-oxo-Gsn高于正常对照组;肝脏炎症程度高的患者(G_3~G_4)尿液中RNA氧化标志物8-oxo-Gsn显著高于炎症程度低的患者(G_0~G_2)(4.28 vs 3.26,χ~2=11.117,P=0.009),纤维化程度高的患者8-oxo-Gsn水平也高于纤维化程度低的患者(3.66 vs 3.29),但未达到显著性水平(χ~2=3.626,P=0.323)。尿液中RNA氧化标志物8-oxo-Gsn对肝脏炎症程度有较好的预测价值(敏感度为82.4%,特异性为75%,AUC=0.813),对纤维化程度有较好的预测价值(敏感度为83.3%,特异性为77.1%,AUC=0.824)。结论尿液中RNA氧化标志物8-oxo-Gsn可能是HBV感染引起的肝损伤严重程度的评估指标。
基金Supported by grants from the National Natural Science Foundation of China(No.31270897,81202149,and 81271682)Graduate Education Innovation Project of Jiangsu Province and the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)
文摘Radiation-induced lung injury is one of the main dose limiting factors for thoracic radiation therapy.Gelsolin(GSN) is a widespread,multifunctional regulator of cellular structure and metabolism.In this work,the roles of GSN in radiation-induced lung injury in Balb/c mice were studied.The GSN levels in plasma reduced progressively in 72 hours after irradiation,and then increased gradually.GSN contents in the bronchoalveolar lavage(BAL) fluid increased after thoracic irradiation,whereas mRNA levels of GSN in the lung tissue decreased significantly within 24 hours after irradiation and then increased again.Mice were intravenously injected with 50 ug GSN antibody 0.5 hour before 20 Gy of thoracic irradiation.GSN antibody pretreatment increased lung inflammation,protein concentration in the BAL fluid and leukocytes infiltration in the irradiated mice.The activities of superoxidase dismutase(SOD) in the plasma and the BAL fluid in irradiated mice injected with GSN antibody were less than that of control groups,whereas the levels of malondialdehyde(MDA)increased.These results suggest that pretreatment of GSN antibody may aggravate radiation-induced pneumonitis.
