目的:初步探讨不同能量负荷对正常糖耐量人群的GLP-1(glucagon like peptide-1)影响。方法:14例正常糖耐量受试者先后接受75g葡萄糖及混合餐试验,检测空腹及葡萄糖或混合餐后15,30,60,90和120min的血糖、胰岛素及GLP-1。结果:(1)本组人...目的:初步探讨不同能量负荷对正常糖耐量人群的GLP-1(glucagon like peptide-1)影响。方法:14例正常糖耐量受试者先后接受75g葡萄糖及混合餐试验,检测空腹及葡萄糖或混合餐后15,30,60,90和120min的血糖、胰岛素及GLP-1。结果:(1)本组人群的GLP-1在葡萄糖负荷后15min出现第一峰值;第二峰值在60min。(2)混合餐负荷GLP-1分泌无明显峰值。(3)两种能量负荷GLP-1曲线下面积差异无显著性。结论:本研究正常糖耐量人群葡萄糖负荷后GLP-1的分泌呈双时相,混合餐负荷后GLP-1无明显峰值。不同能量负荷对正常糖耐量人群GLP-1影响不同。展开更多
[Objective]The study was to analyze the expression of the deletion fragments from the promoter of a glycosyltransferase gene induced both by MeJA and SA cloned from tobacco W38（sm-Ngt） in transgenic tobacco plants.[...[Objective]The study was to analyze the expression of the deletion fragments from the promoter of a glycosyltransferase gene induced both by MeJA and SA cloned from tobacco W38（sm-Ngt） in transgenic tobacco plants.[Method]Using T1 seedlings of sm-Ngt transgenic tobacco lines containing Gus gene controlled by five 5＇ flank deletion promoter fragments different in length as experimental materials,GUS histochemical staining and fluorometric analysis of T1 seedlings treated with MeJA and SA for 16 h were conducted to analyze the effect of MeJA and SA treatment on the expression of 5＇ flank deletion promoter fragments.[Result]Of five 5＇ flank deletion promoter fragments transgenic plant lines,30 d old T1 seedlings containing 220-0 bp promoter fragment performed worst in GUS staining（showing least staining spots）,those containing-524-0 bp and-468-0 bp promoter fragment both performed best.In the plants not treated with MeJA and SA,activities of GUS driven by-524-0 bp and-468-0 bp deletion promoter fragments were enormously higher than that driven by-1 150-0,-800-0 or-220 0 bp,and which were proved to be not resulted from insert copy number by Southern blot.For GUS expression,promoter fragment-800-0 bp expression was doubly induced by both MeJA and SA,while fragment-1 150-0 was induced by MeJA.[Conclusion]There are activity enhancement elements within-524--220 bp of the sm-Ngt in promoter and activity down regulation elements within-1 150--524 bp region,as well as MeJA and SA doubly inducing activity regulation elements in this promoter.展开更多
文摘目的:初步探讨不同能量负荷对正常糖耐量人群的GLP-1(glucagon like peptide-1)影响。方法:14例正常糖耐量受试者先后接受75g葡萄糖及混合餐试验,检测空腹及葡萄糖或混合餐后15,30,60,90和120min的血糖、胰岛素及GLP-1。结果:(1)本组人群的GLP-1在葡萄糖负荷后15min出现第一峰值;第二峰值在60min。(2)混合餐负荷GLP-1分泌无明显峰值。(3)两种能量负荷GLP-1曲线下面积差异无显著性。结论:本研究正常糖耐量人群葡萄糖负荷后GLP-1的分泌呈双时相,混合餐负荷后GLP-1无明显峰值。不同能量负荷对正常糖耐量人群GLP-1影响不同。
基金Supported by Natural Science Foundation of Hubei Province(2004ABA123)~~
文摘[Objective]The study was to analyze the expression of the deletion fragments from the promoter of a glycosyltransferase gene induced both by MeJA and SA cloned from tobacco W38（sm-Ngt） in transgenic tobacco plants.[Method]Using T1 seedlings of sm-Ngt transgenic tobacco lines containing Gus gene controlled by five 5＇ flank deletion promoter fragments different in length as experimental materials,GUS histochemical staining and fluorometric analysis of T1 seedlings treated with MeJA and SA for 16 h were conducted to analyze the effect of MeJA and SA treatment on the expression of 5＇ flank deletion promoter fragments.[Result]Of five 5＇ flank deletion promoter fragments transgenic plant lines,30 d old T1 seedlings containing 220-0 bp promoter fragment performed worst in GUS staining（showing least staining spots）,those containing-524-0 bp and-468-0 bp promoter fragment both performed best.In the plants not treated with MeJA and SA,activities of GUS driven by-524-0 bp and-468-0 bp deletion promoter fragments were enormously higher than that driven by-1 150-0,-800-0 or-220 0 bp,and which were proved to be not resulted from insert copy number by Southern blot.For GUS expression,promoter fragment-800-0 bp expression was doubly induced by both MeJA and SA,while fragment-1 150-0 was induced by MeJA.[Conclusion]There are activity enhancement elements within-524--220 bp of the sm-Ngt in promoter and activity down regulation elements within-1 150--524 bp region,as well as MeJA and SA doubly inducing activity regulation elements in this promoter.
