Growth hormone directly stimulates gluconeogenesis in canine renal proximal tubule.
Growth hormone directly stimulates gluconeogenesis in canine renal proximal tubule.
复制标题
生长激素直接刺激犬肾近曲小管的糖异生。
DOI:
10.1152/ajpendo.1989.257.5.e751
复制
发表时间:
1989
期刊:
影响因子:
--
通讯作者:
Hammerman,MR
中科院分区:
文献类型:
--
作者:
Rogers,SA;Karl,IE;Hammerman,MR
To characterize the action of growth hormone (GH) on gluconeogenesis in renal proximal tubule, glucose production was measured in suspensions of canine renal proximal tubular segments incubated with 1 mM L-alanine, 10 mM lactate, 1 mM succinate, and various concentrations (10(-11) to 10(-6) M) of recombinant bovine GH (bGH). Production of glucose increased as a function of time for 120 min. Bovine growth hormone (10(-6) M) increased glucose production at 120 min by 55 +/- 16%. Significant enhancement of glucose production occurred in suspensions of segments incubated with as little as 10(-10) M bGH. Half-maximal stimulation occurred at between 10(-9) and 10(-8) M. To ascertain whether these actions of bGH are mediated directly, we determined the effects of insulin-like growth factors (IGFs) I and II on glucose production. Addition of IGF-I to segments enhanced glucose production in a concentration-dependent manner. However, incubation with bGH did not induce measurable IGF-I production in the segments. In contrast to the action of IGF-I, IGF-II did not affect glucose production. We conclude that bGH acts directly on cells within proximal tubular segments to enhance gluconeogenesis. Stimulation of gluconeogenesis in vitro could reflect a counterregulatory action of GH exerted on renal proximal tubule in vivo.
登录
查看更多内容
影响因子:
4.8
作者:
Grichting,G;Levy,LK;Goodman,HM
通讯作者:
Goodman,HM
DOI:
10.1073/pnas.82.24.8724
发表时间:
1985
影响因子:
11.1
作者:
Schwartz,J;Foster,CM;Satin,MS
通讯作者:
Satin,MS
DOI:
10.1530/acta.0.0980514
发表时间:
1981
期刊:
Acta endocrinologica
影响因子:
--
作者:
J. Eigenmann;R. Eigenmann
通讯作者:
R. Eigenmann
DOI:
10.1530/acta.0.1050294
发表时间:
1984
期刊:
Acta endocrinologica
影响因子:
--
作者:
J. Eigenmann;D. Patterson;J. Zapf;E. Froesch
通讯作者:
E. Froesch
DOI:
10.1016/0005-2736(80)90378-8
发表时间:
1980
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
Hammerman,MR;Karl,IE;Hruska,KA
通讯作者:
Hruska,KA