磷脂酰肌醇3激酶与2型糖尿病

被引:9
作者
王军
姜宏卫
机构
[1] 青岛市内分泌糖尿病研究所
[2] 青岛市内分泌糖尿病研究所 山东青岛
[3] 山东青岛
关键词
磷脂酰肌醇3激酶; 糖尿病; 胰岛素抵抗; 信号转导;
D O I
暂无
中图分类号
R587.102 [];
学科分类号
1002 ; 100201 ;
摘要
磷脂酰肌醇 3激酶 (PI 3K)作为胰岛素信号转导中的关键酶 ,在调节糖代谢中起重要作用。 2型糖尿病和胰岛素抵抗 (IR)患者中 ,PI 3K的含量和活性均降低 ,并存在对胰岛素刺激的反应缺陷。研究表明 ,PI 3K及其相关物质的基因变异是其mRNA表达和激酶活性降低的主要原因。此外 ,多种致IR物质 ,如游离脂肪酸、肿瘤坏死因子 α等也可影响PI 3K活性 ,说明PI 3K是这些物质导致IR的中介分子之一
引用
收藏
页码:294 / 296
页数:3
相关论文
共 5 条
[1]  
Natural variants of human p85α phosphoinositide 3-kinase in severe insulin resistance: a novel variant with impaired insulin-stimulated lipid kinase activity[J] . K. C.R. Baynes,C. A. Beeton,G. Panayotou,R. Stein,M. Soos,T. Hansen,H. Simpson,S. O’Rahilly,P. R. Shepherd,J. P. Whitehead.Diabetologia . 2000 (3)
[2]   Defective regulation of phosphatidylinositol-3-kinase gene expression in skeletal muscle and adipose tissue of non-insulin-dependent diabetes mellitus patients [J].
Andreelli, F ;
Laville, M ;
Ducluzeau, PH ;
Vega, N ;
Vallier, P ;
Khalfallah, Y ;
Riou, JP ;
Vidal, H .
DIABETOLOGIA, 1999, 42 (03) :358-364
[3]  
Fatty acid induced insulin resistance in rat-1 fibroblasts overexpressing human insulin receptors: impaired insulin-stimulated mitogen-activated protein kinase activity[J] . I. Usui,Y. Takata,T. Imamura,H. Morioka,T. Sasaoka,T. Sawa,H. Ishihara,M. Ishiki,M. Kobayashi.Diabetologia . 1997 (8)
[4]   Defects in insulin signal transduction in liver and muscle of pregnant rats [J].
Saad, MJA ;
Maeda, L ;
Brenelli, SL ;
Carvalho, CRO ;
Paiva, RS ;
Velloso, LA .
DIABETOLOGIA, 1997, 40 (02) :179-186
[5]  
Tumor necrosis factoralpha causes insulin receptor substrate-2-mediated insulin resistance and inhibits insulin-induced adipogenesis in fetal brown adipocytes .2 Valverde A M,Teruel T,Navarro P. Endocrinology . 1998