Inhibin A, inhibin B and activin A in the follicular fluid of regularly cycling women.

Inhibin A, inhibin B and activin A in the follicular fluid of regularly cycling women.
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定期骑自行车的女性卵泡液中的抑制素 A、抑制素 B 和激活素 A。

DOI:
10.1093/humrep/12.8.1714
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发表时间:
1997
期刊:
Human reproduction (Oxford, England)
影响因子:
--
通讯作者:
Jakimiuk,AJ
Jakimiuk,AJ
中科院分区:
--
文献类型:
--
作者:
Magoffin,DA;Jakimiuk,AJ

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最近循环抑制素A和抑制素B浓度的测量表明,抑制素B可能在优势卵泡的选择中起重要作用。采用特异性双位点酶联免疫吸附法测定了47例定期循环妇女的61个卵泡(直径4.8-20 mm)中抑制素A、抑制素B和激活素A的浓度。通过测定卵泡液雄烯二酮和雌二醇浓度来表征每个卵泡的微环境。所有大小的卵泡(4 ~ 17 mm)的平均激活素A浓度均< 8 ng/ml。抑制素A在< 6mm的卵泡中浓度< 1ng /ml,在< 13mm的卵泡中逐渐升高至50ng /ml。雄烯二酮/雌二醇比值<或= 4的卵泡抑制素A浓度高于雄烯二酮/雌二醇比值bb0 4的卵泡。抑制素B在所有卵泡中的浓度均高于抑制素A,从4mm卵泡的19.2 +/- 8.3 ng/ml上升到13mm卵泡的409 +/- 9.6 ng/ml,然后下降到17mm卵泡的275 +/- 47 ng/ml。这些结果支持了抑制素B可能比抑制素a在卵泡发育和促卵泡激素(FSH)分泌方面发挥更重要的旁分泌作用的假设。
Recent measurements of circulating inhibin A and inhibin B concentrations indicate that inhibin B may play an important role in the selection of dominant follicles. The concentrations of inhibin A, inhibin B and activin A were measured in the follicular fluids of 61 individual follicles (4.8-20 mm in diameter) from 47 regularly cycling women using specific two-site enzyme-linked immunosorbent assays. The microenvironment of each follicle was characterized by measuring follicular fluid androstenedione and oestradiol concentrations. The mean activin A concentrations were < 8 ng/ml for follicles of all sizes (4-17 mm). Inhibin A concentrations were < 1 ng/ml in follicles < 6 mm, and progressively increased to concentrations > 50 ng/ml in follicles > or = 13 mm. Follicles with androstenedione/oestradiol ratios < or = 4 had higher concentrations of inhibin A than follicles with androstenedione/oestradiol ratios > 4. Inhibin B concentrations were higher than inhibin A concentrations in all follicles, increasing from 19.2 +/- 8.3 ng/ml in 4 mm follicles to 409 +/- 9.6 ng/ml in 13 mm follicles and then declining to 275 +/- 47 ng/ml in 17 mm follicles. These results support the hypothesis that inhibin B may play a more important paracrine role in developing follicles and a greater regulatory role with respect to follicle stimulating hormone (FSH) secretion than inhibin A.
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