Differential effects of placental lactogen, growth hormone and prolactin on rat liver ornithine decarboxylase activity in the perinatal period.
Differential effects of placental lactogen, growth hormone and prolactin on rat liver ornithine decarboxylase activity in the perinatal period.
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胎盘催乳素、生长激素和催乳素对围产期大鼠肝脏鸟氨酸脱羧酶活性的差异影响。
DOI:
10.1016/0024-3205(80)90394-x
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发表时间:
1980
期刊:
影响因子:
6.1
通讯作者:
Handwerger,S
中科院分区:
文献类型:
--
作者:
Hurley,TW;Kuhn,CM;Schanberg,SM;Handwerger,S
Abstract Ovine placental lactogen,(oPL), ovine growth hormone,(oGH), and ovine prolactin,(oPRL) are present in high concentrations in the fetal circulation late in gestation. To determine if these hormones stimulate the activity of ornithine decarboxylase (ODC), an enzyme widely implicated in the control of cellular growth, rat fetuses were injected in utero with 100 μg of oPL, oGH, oPRL, rat growth hormone (rGH) or rat prolactin (rPRL) and ODC activity in the livers, hearts, and brains of the fetuses was measured 2, 4, and 6 hours after injection. OPL stimulated fetal liver ODC activity by 282±45%(mean±SEM) as compared to litter mates injected with buffer alone but oGH, oPRL, rGH and rPRL had no effect on fetal liver ODC activity. However, in neonatal rats 24–48 hours old all five hormones significantly increased liver ODC activity. ODC activities in the hearts and brains of the fetuses and neonates were unaffected by any of the five hormones. In other experiments 50 μg of oPL significantly stimulated fetal liver ODC activity while 250 μg of oGH were without effect. However 25 μg of oGH significantly stimulated liver ODC activity in rat pups 1–2 days after birth. These results suggest that oPL, by its stimulation of ODC activity, has somatotropic effects in the fetus and that rat liver ODC activity becomes responsive to growth hormone and prolactin in the perinatal period.
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影响因子:
6.1
作者:
Stephen R. Butler;Thomas Hurley;Saul M. Schanberg;Stuart Handwerger
通讯作者:
Stuart Handwerger
影响因子:
8.8
作者:
B. Reviews;G. Murphy;Arnold Mittel;P. J. O 'connor
通讯作者:
P. J. O 'connor
影响因子:
4.1
作者:
A. Pegg;H. G. Williams
通讯作者:
H. G. Williams
影响因子:
4.8
作者:
P. Gluckman;P. L. Mueller;S. Kaplan;A. Rudolph;M. Grumbach
通讯作者:
M. Grumbach
DOI:
10.1677/joe.0.0480251
发表时间:
1970
期刊:
The Journal of endocrinology
影响因子:
--
作者:
J. Bassett;G. Thorburn;A. Wallace
通讯作者:
A. Wallace