Prostaglandin Metabolism in the Ovine Corpus Luteum: Catabolism of Prostaglandin F2α (PGF2α) Coincides with Resistance of the Corpus Luteum to PGF2α1

Prostaglandin Metabolism in the Ovine Corpus Luteum: Catabolism of Prostaglandin F2α (PGF2α) Coincides with Resistance of the Corpus Luteum to PGF2α1
复制标题

绵羊黄体中的前列腺素代谢:前列腺素 F2α (PGF2α) 的分解代谢与黄体对 PGF2α1 的抵抗一致

DOI:
--
复制
发表时间:
2000
期刊:
影响因子:
--
通讯作者:
G. Niswender
G. Niswender
中科院分区:
--
文献类型:
--
作者:
P. Silva;J. Juengel;M. K. Rollyson;G. Niswender

文献摘要

参考文献

被引文献

相似文献

为探讨绵羊黄体抵抗前列腺素F 2 α(PG F 2 α)溶黄体活性的可能机制,测定了发情周期第4、13天和妊娠第13天绵羊黄体中15-羟基前列腺素脱氢酶(PGDH)的活性及PGDH和环氧合酶(考克斯-2)的mRNA表达。在发情周期第4天和妊娠第13天,黄体对PGF 2 α的作用具有抵抗性,而在发情周期第13天,黄体对PGF 2 α的作用敏感。在发情周期第4天(P < 0.05)和妊娠第13天(P <0.05),黄体中PGDH的酶活性(以PGF 2 α转化为PGFM的速率衡量)高于发情周期第13天。在发情周期第4天(P < 0.01)和妊娠第13天(P < 0.01),黄体中PGDH mRNA的表达水平也高于发情周期第13天(P < 0.01)。因此,在早期发情周期和早期妊娠期间,黄体具有更大的分解代谢PGF的能力,这可能在黄体抵抗这种激素的作用中发挥作用。在发情周期第13天收集的黄体中未检测到编码考克斯-2的mRNA水平,但在发情周期第4天和妊娠第13天收集的黄体中分别为11 ± 4和44 ± 28 μg poly(A)+ RNA。这些数据表明,发情周期早期和妊娠早期合成PGF 2 α的能力高于发情周期第13天。结论PGDH酶活性可能在黄体抵抗PGF 2 α溶黄体作用的机制中起重要作用。
Abstract To examine possible mechanisms involved in resistance of the ovine corpus luteum to the luteolytic activity of prostaglandin (PG)F2α, the enzymatic activity of 15-hydroxyprostaglandin dehydrogenase (PGDH) and the quantity of mRNA encoding PGDH and cyclooxygenase (COX-2) were determined in ovine corpora lutea on Days 4 and 13 of the estrous cycle and Day 13 of pregnancy. The corpus luteum is resistant to the action of PGF2α on Days 4 of the estrous cycle and 13 of pregnancy while on Day 13 of the estrous cycle the corpus luteum is sensitive to the actions PGF2α. Enzymatic activity of PGDH, measured by rate of conversion of PGF2α to PGFM, was greater in corpora lutea on Day 4 of the estrous cycle (P < 0.05) and Day 13 of pregnancy (P < 0.05) than on Day 13 of the estrous cycle. Levels of mRNA encoding PGDH were also greater in corpora lutea on Day 4 of the estrous cycle (P < 0.01) and Day 13 of pregnancy (P < 0.01) than on Day 13 of the estrous cycle. Thus, during the early estrous cycle and early pregnancy, the corpus luteum has a greater capacity to catabolize PGF, which may play a role in the resistance of the corpus luteum to the actions of this hormone. Levels of mRNA encoding COX-2 were undetectable in corpora lutea collected on Day 13 of the estrous cycle but were 11 ± 4 and 44 ± 28 amol/μg poly(A)+ RNA in corpora lutea collected on Day 4 of the estrous cycle and Day 13 of pregnancy, respectively. These data suggest that there is a greater capacity to synthesize PGF2α, early in the estrous cycle and early in pregnancy than on Day 13 of the estrous cycle. In conclusion, enzymatic activity of PGDH may play an important role in the mechanism involved in luteal resistance to the luteolytic effects of PGF2α.
前列腺素 F2α 诱导绵羊黄体中前列腺素 G/H 合酶 2 的表达:黄体溶解过程中的潜在正反馈回路。
DOI: 10.1095/biolreprod57.5.1016
发表时间: 1997
影响因子: 3.6
作者:
Tsai,SJ;Wiltbank,MC
通讯作者: Wiltbank,MC
不同的机制调节牛排卵前卵泡中前列腺素 (PG) G/H 合酶 2、PGE (EP3) 受体和 PGF2 α 受体的信使核糖核酸的诱导。
DOI: 10.1210/endo.137.8.8754761
发表时间: 1996
期刊: Endocrinology.
影响因子: --
作者:
Tsai,SJ;Wiltbank,MC;Bodensteiner,KJ
通讯作者: Bodensteiner,KJ
绵羊黄体组织中编码两种蛋白激酶 C 抑制剂的 mRNA 的稳态浓度。
DOI: 10.1530/jrf.0.1130299
发表时间: 1998
期刊: Journal of reproduction and fertility
影响因子: --
作者:
Juengel,JL;Melner,MH;Clapper,JA;Turzillo,AM;Moss,GE;Nett,TM;Niswender,GD
通讯作者: Niswender,GD
前列腺素 F2α 调节早期和中期牛黄体的明显生理变化。
DOI: 10.1095/biolreprod58.2.346
发表时间: 1998
影响因子: 3.6
作者:
Tsai,SJ;Wiltbank,MC
通讯作者: Wiltbank,MC