Ovulation is associated with the LH-dependent induction of pla2g4aa in zebrafish

Ovulation is associated with the LH-dependent induction of pla2g4aa in zebrafish
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斑马鱼的排卵与 LH 依赖性的 pla2g4aa 诱导有关

DOI:
10.1016/j.mce.2018.01.002
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发表时间:
2018-09
影响因子:
4.1
通讯作者:
Lin Haoran
Lin Haoran
中科院分区:
医学2区
文献类型:
--
作者:
Tang Haipei;Wang Le;Chen Yu;He Jianan;Qu Ling;Guo Yin;Liu Yun;Liu Xiaochun;Lin Haoran

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促排卵前黄体生成素(LH)激增对排卵过程的影响是由前列腺素(pg)介导的,其合成涉及前列腺素合成酶和胞质磷脂酶A2 (cPLA2)。在我们之前的研究中,我们系统地研究了前列腺素内过氧化物合成酶(ptgs)基因在斑马鱼排卵中的作用。然而,cPLA2在斑马鱼排卵中的作用尚未确定。在本研究中,我们研究了cpla2α在围卵泡中PGs产生和排卵中的作用。我们的数据表明,在斑马鱼卵泡发生过程中,pla2g4aa的表达增加,并且卵泡层是pla2g4aa的主要表达区域。此外,pla2g4aaa的体内表达受LHin体外调控。此外,注射cPLA2特异性抑制剂AACOCF3可显著降低卵巢PGs水平,阻断hcg诱导的排卵。总的来说,这些发现表明pla2g4与斑马鱼的排卵过程有关。
The effects of the preovulatory luteinizing hormone (LH) surge on the ovulatory process are mediated by prostaglandins (PGs), the synthesis of which involves prostaglandin synthetase and cytosolic phospholipase A2 (cPLA2). In our previous study, we systematically investigated the function of prostaglandin endoperoxide synthase (ptgs) genes on ovulation in zebrafish. However, the role of cPLA2 in ovulation was not determined in zebrafish. In this study, we investigated the function ofcpla2αin PGs production and ovulation in periovulatory follicles. Our data showed that the expression ofpla2g4aaincreased during zebrafish folliculogenesis and the follicular layer was the primary region with expression ofpla2g4aa.In addition, the expression ofpla2g4aawas regulated by LHin vitroandin vivo. Furthermore, injection of AACOCF3, a specific inhibitor of cPLA2, significantly reduced ovarian PGs level and blocked hCG-induced ovulation. Collectively, these findings suggest thatpla2g4aais related to the ovulation process in zebrafish.
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