Changes in cytosolic and nuclear progesterone receptors during pregnancy in rat placenta.

Changes in cytosolic and nuclear progesterone receptors during pregnancy in rat placenta.
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大鼠胎盘妊娠期间胞质和核孕酮受体的变化。

DOI:
10.1095/biolreprod40.5.1012
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发表时间:
1989
影响因子:
3.6
通讯作者:
Soares,MJ
Soares,MJ
中科院分区:
生物学2区
文献类型:
--
作者:
Ogle,TF;Mills,TM;Soares,MJ

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这些研究检查了妊娠第9天和第22天之间胎盘生长和整个胎盘中孕酮受体(Rp)丰度的变化。此外,在测定Rp之前,将一些胎盘解剖成蜕膜基底层、结合区和迷路区。高亲和力结合的3 H-孕酮的RP检测在整个胎盘和底蜕膜和胎盘交界区的妊娠的各个阶段。在两种组织中,胞质和核受体对孕酮表现出相似的亲和力(Kd分别为3.1 ± 0.3和4.4 ± 0.7 nM)。从第9天到第12天,整个胎盘中的受体结合增加(p<0.05),在第16天显著下降(p<0.05),并在第19天和第22天恢复到以前的水平(p<0.05)。在第14天,基底蜕膜含有总Rp的84%,其在第17天下降至67%(p<0.05)。第14天,交界区占总Rp的16%,第17天占33%。在第17天之后,结合区是Rp的唯一来源。第16天的下降,在RP的消退后,蜕膜;恢复的RP此后是由于生长的交界区。迷宫区没有表达显着的RP量在任何阶段,尽管在怀孕后期的增长增加了4倍。虽然对Rp在维持妊娠中的生物学作用知之甚少,但这些研究表明母体基底蜕膜和胎儿交界区是孕酮作用的靶点。
These studies examine changes in placental growth and the abundance of progesterone receptors (Rp) in whole placentas between Days 9 and 22 of pregnancy. In addition, some placentas were dissected into decidual basalis, junctional zone, and labyrinth zone before assay of Rp. High affinity binding of3H-progesterone to Rp was detected at all stages of pregnancy in whole placentas and in decidua basalis and the junctional zone of the placenta. Cytosolic and nuclear receptors exhibited similar affinity for progesterone in both tissues (Kd= 3.1 ± 0.3 and 4.4 ± 0.7 nM, respectively). Receptor binding in whole placentas increased from Day 9 to Day 12 (p<0.05), declined markedly at Day 16 (p<0.05), and returned to former levels on Days 19 and 22 (p<0.05). Decidua basalis contained 84% of total Rp on Day 14, which declined to 67% on Day 17 (p<0.05). The junctional zone contained 16% of total Rp on Day 14 and 33% on Day 17. After Day 17, junctional zone was the only source of Rp. The decline in Rp on Day 16 followed regression of decidua basalis; recovery of Rp thereafter was due to growth of the junctional zone. The labyrinth zone did not express significant amounts of Rp at any stage despite a 4-fold increase in growth in late pregnancy. Although the biologic role of the Rp in maintenance of pregnancy is poorly understood, these studies suggest that the maternal decidua basalis and fetal junctional zone are targets of progesterone action.
黄体酮和 RU38486 对大鼠胎盘蛋白质合成的作用。
DOI: --
发表时间: 1987
影响因子: --
作者:
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通过黄体酮控制子宫雌激素受体水平。
DOI: --
发表时间: 1976
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发表时间: 1978
期刊: Endocrinology
影响因子: 4.8
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DOI: 10.1002/aja.1001140109
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期刊: The American journal of anatomy
影响因子: --
作者:
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通讯作者: W. Jollie
DOI: 10.1016/0022-4731(86)90345-6
发表时间: 1986
期刊: Journal of steroid biochemistry
影响因子: --
作者:
T. Ogle
通讯作者: T. Ogle