Sediment grain size in the deltaic environment of the Luanhe River(LR),Liaoning,China,contains sediment transport pathway information useful in elucidating the shoreline change and fluvialmarine interaction.In this st...Sediment grain size in the deltaic environment of the Luanhe River(LR),Liaoning,China,contains sediment transport pathway information useful in elucidating the shoreline change and fluvialmarine interaction.In this study,we utilized numerical partitioning of the sedimentary components and geostatistical grain size trend analysis(GSTA)to define the sediment transport pattern in the Luanhe River delta(LRD)and interpolated the sediment transport pattern using content changes of end numbers(EM).EM1(the mean grain size 7.12Ф,fine silt),EM2(2.37Ф,fine sand),and EM3(1.27Ф,medium sand)components were identified by the numerical partitioning by GSTA.Kriging interpolation method was used to interpolate the parameters of the grain size for the regular grid,and the interpolation radius was 0.015 decimal degree.We chose 0.09 decimal degree as the characteristic distance for GSTA in the semivariogram model using the geostatistical method.The FB(-)case(finer,better sorted and more negatively skewed)was adopted in GSTA for its satisfaction in the Global Moran’s I test.The result of the GSTA shows that the sediments in the south barriers(SBs)were transported to the southwest of the study area.The sediments in the north,in the SE direction of sediment transport trend from the river mouth,indicated that the sediments in the north of the study area were transported from the LR to the northern beaches,and to the south and east of the study area.The sediment transport trend that simplified by GSTA as the FB(-)case was approved by the content changes of sedimentary components(i.e.EM1,EM2,and EM3).In addition,the turbulent jet diffusion pattern indicated that the coarse sediments(EM3)were delivered by LR during the flood season,and the EM2 and EM1 were from wave and tide,respectively.展开更多
为研究谷胱甘肽S转移酶A1(GSTA1)在肝损伤早期诊断中的价值,本试验通过检测血清谷丙转氨酶(GPT)及肝组织指标丙二醛(MDA)、超氧化物歧化酶(SOD)、谷胱甘肽(GSH)、谷胱甘肽过氧化物酶(GSH-Px)变化,成功复制急性酒精性肝损伤小鼠模型;通...为研究谷胱甘肽S转移酶A1(GSTA1)在肝损伤早期诊断中的价值,本试验通过检测血清谷丙转氨酶(GPT)及肝组织指标丙二醛(MDA)、超氧化物歧化酶(SOD)、谷胱甘肽(GSH)、谷胱甘肽过氧化物酶(GSH-Px)变化,成功复制急性酒精性肝损伤小鼠模型;通过时间-效应和剂量-效应关系研究血清中GSTA1和ALT变化。结果显示,给予小鼠灌服乙醇溶液后,2 h血清中GSTA1含量变化与对照组相比差异极显著(P<0.01),而ALT活性变化在6 h才显示出一定的差异性(P<0.05);当乙醇剂量为10 m L/kg体重时,血清中GSTA1含量变化与对照组相比差异极显著(P<0.01),而当乙醇剂量达到14 m L/kg体重时,ALT活性变化与对照组相比差异极显著(P<0.01)。表明在急性酒精性肝损伤模型中,GSTA1的含量变化在肝损伤早期就可检测出来,作为肝损伤标记物,GSTA1比ALT更敏感。展开更多
目的:探讨谷胱甘肽硫转移酶A3(GSTA3)在鼻咽癌中的表达及其意义。方法:利用GCBI(Gene Cloud of Biotechnology Information)在线基因数据分析平台分析鼻咽癌原发肿瘤与正常对照组织的表达谱芯片数据(GSE13597、GSE64634、GSE12452),从...目的:探讨谷胱甘肽硫转移酶A3(GSTA3)在鼻咽癌中的表达及其意义。方法:利用GCBI(Gene Cloud of Biotechnology Information)在线基因数据分析平台分析鼻咽癌原发肿瘤与正常对照组织的表达谱芯片数据(GSE13597、GSE64634、GSE12452),从中探寻GSTA3的表达水平。通过实时荧光定量PCR(qPCR)方法验证GSTA3在鼻咽癌细胞和组织中的转录水平差异,进一步利用免疫组织化学染色研究GSTA3在鼻咽癌肿瘤组织中蛋白表达的情况。结果:生物信息分析提示,GSTA3转录水平在3组鼻咽癌表达谱芯片中均表达下调(P<0.05);与正常组织比较,鼻咽癌组织中GSTA3mRNA的转录水平明显下降,差异具有统计学意义(P<0.05),与正常鼻咽上皮细胞NP69比较,5个鼻咽癌细胞系中GSTA3mRNA的转录水平均明显下降(均P<0.001);GSTA3蛋白在鼻咽癌患者中的表达水平低于正常组织(P<0.001)。结论:GSTA3在鼻咽癌中表达下调,可能参与鼻咽癌的发生和发展。展开更多
The aim of the study was to investigate the hepatoprotective effects of Folium syringae(FS) extracts against ethanolinduced acute liver injury. Mice and primary hepatocytes were pretreated with FS extracts at differen...The aim of the study was to investigate the hepatoprotective effects of Folium syringae(FS) extracts against ethanolinduced acute liver injury. Mice and primary hepatocytes were pretreated with FS extracts at different dosages before ethanol administration. Transaminases, glutathione S-transferase A1 level and hepatic biochemical indices(malondialdehyde, superoxide dismutase, glutathione and glutathione peroxidase) were determined. Pretreatment with FS extracts significantly inhibited the damage caused by ethanol and the hepatoprotective effects of FS were almost similar to Silymarin that was used to treat alcoholic liver injury. GSTA1 contents in all the FS extract-treated groups were significantly different from those in the ethanol-induced acute liver injury model group(p<0.01), and similar trends were observed in transaminases and hepatic indices level both in vitro and in vivo. The results showed that FS extracts had hepatoprotective effects against ethanol-induced injury. Those effects might be related to the enhancement of antioxidant capacity of liver cells, and FS extracts could reduce the release of liver GSTA1, which contributed to improve liver detoxification.展开更多
基金Supported by the National Science Foundation of China and Shandong Provincial Government(No.U1706214)the Basic Scientific Fund for National Public Research Institutes of China(No.2016Q06)
文摘Sediment grain size in the deltaic environment of the Luanhe River(LR),Liaoning,China,contains sediment transport pathway information useful in elucidating the shoreline change and fluvialmarine interaction.In this study,we utilized numerical partitioning of the sedimentary components and geostatistical grain size trend analysis(GSTA)to define the sediment transport pattern in the Luanhe River delta(LRD)and interpolated the sediment transport pattern using content changes of end numbers(EM).EM1(the mean grain size 7.12Ф,fine silt),EM2(2.37Ф,fine sand),and EM3(1.27Ф,medium sand)components were identified by the numerical partitioning by GSTA.Kriging interpolation method was used to interpolate the parameters of the grain size for the regular grid,and the interpolation radius was 0.015 decimal degree.We chose 0.09 decimal degree as the characteristic distance for GSTA in the semivariogram model using the geostatistical method.The FB(-)case(finer,better sorted and more negatively skewed)was adopted in GSTA for its satisfaction in the Global Moran’s I test.The result of the GSTA shows that the sediments in the south barriers(SBs)were transported to the southwest of the study area.The sediments in the north,in the SE direction of sediment transport trend from the river mouth,indicated that the sediments in the north of the study area were transported from the LR to the northern beaches,and to the south and east of the study area.The sediment transport trend that simplified by GSTA as the FB(-)case was approved by the content changes of sedimentary components(i.e.EM1,EM2,and EM3).In addition,the turbulent jet diffusion pattern indicated that the coarse sediments(EM3)were delivered by LR during the flood season,and the EM2 and EM1 were from wave and tide,respectively.
文摘为研究谷胱甘肽S转移酶A1(GSTA1)在肝损伤早期诊断中的价值,本试验通过检测血清谷丙转氨酶(GPT)及肝组织指标丙二醛(MDA)、超氧化物歧化酶(SOD)、谷胱甘肽(GSH)、谷胱甘肽过氧化物酶(GSH-Px)变化,成功复制急性酒精性肝损伤小鼠模型;通过时间-效应和剂量-效应关系研究血清中GSTA1和ALT变化。结果显示,给予小鼠灌服乙醇溶液后,2 h血清中GSTA1含量变化与对照组相比差异极显著(P<0.01),而ALT活性变化在6 h才显示出一定的差异性(P<0.05);当乙醇剂量为10 m L/kg体重时,血清中GSTA1含量变化与对照组相比差异极显著(P<0.01),而当乙醇剂量达到14 m L/kg体重时,ALT活性变化与对照组相比差异极显著(P<0.01)。表明在急性酒精性肝损伤模型中,GSTA1的含量变化在肝损伤早期就可检测出来,作为肝损伤标记物,GSTA1比ALT更敏感。
文摘目的:探讨谷胱甘肽硫转移酶A3(GSTA3)在鼻咽癌中的表达及其意义。方法:利用GCBI(Gene Cloud of Biotechnology Information)在线基因数据分析平台分析鼻咽癌原发肿瘤与正常对照组织的表达谱芯片数据(GSE13597、GSE64634、GSE12452),从中探寻GSTA3的表达水平。通过实时荧光定量PCR(qPCR)方法验证GSTA3在鼻咽癌细胞和组织中的转录水平差异,进一步利用免疫组织化学染色研究GSTA3在鼻咽癌肿瘤组织中蛋白表达的情况。结果:生物信息分析提示,GSTA3转录水平在3组鼻咽癌表达谱芯片中均表达下调(P<0.05);与正常组织比较,鼻咽癌组织中GSTA3mRNA的转录水平明显下降,差异具有统计学意义(P<0.05),与正常鼻咽上皮细胞NP69比较,5个鼻咽癌细胞系中GSTA3mRNA的转录水平均明显下降(均P<0.001);GSTA3蛋白在鼻咽癌患者中的表达水平低于正常组织(P<0.001)。结论:GSTA3在鼻咽癌中表达下调,可能参与鼻咽癌的发生和发展。
基金Supported by the National Natural Science Foundation of China(31472241)the Application Technology Research and Development Projects in Heilongjiang Province of China(PC13S03)
文摘The aim of the study was to investigate the hepatoprotective effects of Folium syringae(FS) extracts against ethanolinduced acute liver injury. Mice and primary hepatocytes were pretreated with FS extracts at different dosages before ethanol administration. Transaminases, glutathione S-transferase A1 level and hepatic biochemical indices(malondialdehyde, superoxide dismutase, glutathione and glutathione peroxidase) were determined. Pretreatment with FS extracts significantly inhibited the damage caused by ethanol and the hepatoprotective effects of FS were almost similar to Silymarin that was used to treat alcoholic liver injury. GSTA1 contents in all the FS extract-treated groups were significantly different from those in the ethanol-induced acute liver injury model group(p<0.01), and similar trends were observed in transaminases and hepatic indices level both in vitro and in vivo. The results showed that FS extracts had hepatoprotective effects against ethanol-induced injury. Those effects might be related to the enhancement of antioxidant capacity of liver cells, and FS extracts could reduce the release of liver GSTA1, which contributed to improve liver detoxification.
