胰岛素抗炎作用的体外实验研究

目的通过体外培养人外周血单核细胞,观察不同浓度胰岛素对脂多糖(LPS)刺激的单核细胞早期生长反应因子-1(Egr-1)活性和组织因子(TF)表达的影响,探讨胰岛素的抗炎作用及其机制。方法收集20名健康成人外周血各100 mL,分离单核细胞,分4组进行培养干预,A:空白对照组(葡萄糖浓度2 g/L);B:高葡萄糖组(葡萄糖浓度3 g/L);C:高葡萄糖+低胰岛素(100 mu/L)组;D:高葡萄糖+高胰岛素(1 000 mu/L)组。每组设两个亚组,孵育24 h后加LPS继续培养,1 h后一个亚组用免疫印迹法检测Egr-1活性;6 h后,另一亚组离心收集细胞上清液,采用酶联免疫吸附法检测TF含量...

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Published in西安交通大学学报(医学版) Vol. 32; no. 3; pp. 324 - 327
Main Author 孟艳平 朱本章
Format Journal Article
LanguageChinese
Published 西安交通大学医学院第一附属医院内分泌科,陕西西安,710061 2011
山东济宁医学院附属金乡医院,山东金乡,272200%西安交通大学医学院第一附属医院内分泌科,陕西西安,710061
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ISSN1671-8259

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Summary:目的通过体外培养人外周血单核细胞,观察不同浓度胰岛素对脂多糖(LPS)刺激的单核细胞早期生长反应因子-1(Egr-1)活性和组织因子(TF)表达的影响,探讨胰岛素的抗炎作用及其机制。方法收集20名健康成人外周血各100 mL,分离单核细胞,分4组进行培养干预,A:空白对照组(葡萄糖浓度2 g/L);B:高葡萄糖组(葡萄糖浓度3 g/L);C:高葡萄糖+低胰岛素(100 mu/L)组;D:高葡萄糖+高胰岛素(1 000 mu/L)组。每组设两个亚组,孵育24 h后加LPS继续培养,1 h后一个亚组用免疫印迹法检测Egr-1活性;6 h后,另一亚组离心收集细胞上清液,采用酶联免疫吸附法检测TF含量。结果①B组较A组Egr-1活性升高,TF含量增加(P〈0.05);②C组、D组与B组相比Egr-1活性降低,TF含量减低(P〈0.05);③D组较C组Egr-1活性降低,TF含量减低(P〈0.05)。结论增加培养液中葡萄糖的浓度可刺激炎性因子Egr-1和TF的分泌;胰岛素有直接抗炎作用,其机制与抑制Egr-1活性、降低TF的表达有关;且抗炎效应呈剂量相关性变化
Bibliography:MENG Yan-ping,ZHU Ben-zhang (1.Department of Endocrinology,the First Affiliated Hospital,Medical School of Xi’an Jiaotong University,Xi’an 710061;2.Jinxiang Hospital Affiliated to Jining Medical College,Jinxiang 272200,China)
insulin; anti-inflammation; Egr-l; tissue factor (TF)
Objective To study the effect of insulin on Egr-1 and tissue factor(TF) in peripheral blood monocytes stimulated by lipopolysaccharide(LPS),and then discuss the anti-inflammatory effects of insulin and its mechanism.Methods Peripheral blood of 100 mL was collected from 20 healthy adults;monocytes were isolated and incubated for 24 hours with different groups: A: blank control group(glucose concentration of 2 g/L);B: high-glucose group(3 g/L);C: high-glucose + low-insulin(100 mu/L);D: high-glucose + high-insulin(1 000 mu/L) group.Two subgroups were set in each category.We incubated the cells for 24 hours,then continued to culture them after adding LPS.One hour later we detected Egr-1 activity in one of the sub-groups with Western blottin
ISSN:1671-8259