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钒酸盐对培养的大鼠肝细胞中6-磷酸果糖-2-激酶活性及果糖-2,6-二磷酸水平的影响。

Effects of vanadate on 6-phosphofructo 2-kinase activity and fructose 2,6-bisphosphate levels in cultured rat hepatocytes.

作者信息

Miralpeix M, Katz N R, Bartrons R

机构信息

Departament de Ciències Fisiològiques Humanes de la Nutrició, Universitat de Barcelona, Spain.

出版信息

Cell Biochem Funct. 1990 Oct;8(4):237-41. doi: 10.1002/cbf.290080409.

DOI:10.1002/cbf.290080409
PMID:2148713
Abstract

The presence of vanadate in primary cultures of rat hepatocytes produced a significant increase in the concentration of fructose 2,6-bisphosphate and in the activity of 6-phosphofructo 2-kinase. Compared with insulin, vanadate had a more potent action on the metabolite increase, but a similar effect on the 6-phosphofructo 2-kinase activity. Both the insulin- and the vanadate-dependent enhancements of 6-phosphofructo 2-kinase were inhibited by cycloheximide which specifically blocks protein synthesis on the translational level, suggesting that the increase of the enzyme activity was due to induction rather than to a change in the catalytic activity.

摘要

钒酸盐存在于大鼠肝细胞原代培养物中时,会使果糖2,6 -二磷酸的浓度以及6 -磷酸果糖-2 -激酶的活性显著增加。与胰岛素相比,钒酸盐对代谢物增加的作用更强,但对6 -磷酸果糖-2 -激酶活性的影响相似。胰岛素和钒酸盐依赖的6 -磷酸果糖-2 -激酶增强作用均被环己酰亚胺抑制,环己酰亚胺在翻译水平特异性阻断蛋白质合成,这表明酶活性的增加是由于诱导作用而非催化活性的改变。

相似文献

1
Effects of vanadate on 6-phosphofructo 2-kinase activity and fructose 2,6-bisphosphate levels in cultured rat hepatocytes.钒酸盐对培养的大鼠肝细胞中6-磷酸果糖-2-激酶活性及果糖-2,6-二磷酸水平的影响。
Cell Biochem Funct. 1990 Oct;8(4):237-41. doi: 10.1002/cbf.290080409.
2
Vanadate raises fructose 2,6-bisphosphate concentrations and activates glycolysis in rat hepatocytes.钒酸盐可提高大鼠肝细胞中果糖2,6-二磷酸的浓度并激活糖酵解。
Biochem J. 1988 Oct 15;255(2):507-12.
3
Modulation of glucose metabolism by sulfonylureas in primary cultures of adult rat hepatocytes.磺酰脲类药物对成年大鼠原代肝细胞葡萄糖代谢的调节作用
Biochem Int. 1990 Sep;21(6):1125-34.
4
Tolbutamide enhances insulin action on gluconeogenesis and on fructose 2,6-bisphosphate levels in isolated rat hepatocytes.甲苯磺丁脲可增强胰岛素对分离的大鼠肝细胞糖异生及果糖-2,6-二磷酸水平的作用。
Diabete Metab. 1988 Dec;14(6):712-6.
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Vanadate counteracts glucagon effects in isolated rat hepatocytes.钒酸盐可抵消胰高血糖素对离体大鼠肝细胞的作用。
Life Sci. 1989;44(20):1491-7. doi: 10.1016/0024-3205(89)90328-7.
6
Activation of glycolysis by insulin with a sequential increase of the 6-phosphofructo-2-kinase activity, fructose-2,6-bisphosphate level and pyruvate kinase activity in cultured rat hepatocytes.胰岛素激活培养的大鼠肝细胞中的糖酵解,伴随6-磷酸果糖-2-激酶活性、果糖-2,6-二磷酸水平和丙酮酸激酶活性依次增加。
Eur J Biochem. 1985 Dec 2;153(2):347-53. doi: 10.1111/j.1432-1033.1985.tb09309.x.
7
Vanadate activates pentose phosphate pathway and glycolysis, and raises fructose 2,6-bisphosphate concentration in slices of lactating rat mammary gland.钒酸盐可激活戊糖磷酸途径和糖酵解,并提高泌乳期大鼠乳腺切片中果糖2,6 -二磷酸的浓度。
Biochem Int. 1991 Aug;24(6):1111-8.
8
Insulin-like effects of vanadate on glucokinase activity and fructose 2,6-bisphosphate levels in the liver of diabetic rats.钒酸盐对糖尿病大鼠肝脏中葡萄糖激酶活性和果糖2,6 -二磷酸水平的类胰岛素作用。
J Biol Chem. 1988 Feb 5;263(4):1868-71.
9
Vanadate treatment increases the activity of glycolytic enzymes and raises fructose 2,6-bisphosphate concentration in hearts from diabetic rats.钒酸盐处理可增加糖尿病大鼠心脏中糖酵解酶的活性,并提高果糖2,6 -二磷酸的浓度。
Biochem Int. 1992 Nov;28(3):525-31.
10
Vanadate treatment rapidly improves glucose transport and activates 6-phosphofructo-1-kinase in diabetic rat intestine.钒酸盐处理可迅速改善糖尿病大鼠肠道中的葡萄糖转运并激活6-磷酸果糖-1-激酶。
Diabetologia. 1995 Apr;38(4):403-12. doi: 10.1007/BF00410277.

引用本文的文献

1
Vanadate treatment rapidly improves glucose transport and activates 6-phosphofructo-1-kinase in diabetic rat intestine.钒酸盐处理可迅速改善糖尿病大鼠肠道中的葡萄糖转运并激活6-磷酸果糖-1-激酶。
Diabetologia. 1995 Apr;38(4):403-12. doi: 10.1007/BF00410277.
2
Oral administration of vanadate to diabetic rats restores liver 6-phosphofructo-2-kinase content and mRNA.给糖尿病大鼠口服钒酸盐可恢复肝脏中6-磷酸果糖-2-激酶的含量及信使核糖核酸水平。
Diabetologia. 1992 Mar;35(3):243-8. doi: 10.1007/BF00400924.