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首页> 外文期刊>Радиационная биология, радиоэкология >Effects of prenatal #gamma#-radiation on the functional coupling of components of adenylyl cyclase system in rat liver
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Effects of prenatal #gamma#-radiation on the functional coupling of components of adenylyl cyclase system in rat liver

机译:prenatal#gamma#-radiation对大鼠肝脏腺苷酸环酶系统组分功能偶联的影响

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摘要

The effects of long-term prenatal #gamma#-radiation (0.5 Gy) on the glucagon signalling through adenylyl cyclase in adult rat liver have been investigated. The coupling of receptor/G_S-protein/adenylyl cyclase was tested using kinetic constants for stimulation of adenylyl cyclase by GTP, Gp(NH)pp, AlF_4~- and glucagon. The estimated data suggests that prenatal chronic #gamma#-radiation prompted (i) a decrease in rate of GTP hydrolysis on G_S-protein; (ii) a reduction of glucagon potency to accelerate the exchange GDP for GTP on G_S-protein.
机译:研究了长期产前#Gamma#-radiation(0.5Gy)对通过成年大鼠肝脏中腺苷环酶的胰高血糖素信号传导的影响。 使用动力学常数测试受体/ g_s-蛋白/腺苷酸环酶的偶联,用于通过GTP,GP(NH)PP,ALF_4〜 - 和胰高血糖素刺激腺苷酸环化酶。 估计的数据表明,产前慢性#gamma#-radiation促使(i)降低GTP水解对G_s-蛋白的速率; (ii)减少胰高血糖素效力,以加速GTP对G_S-蛋白的Exchange GDP。

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