Melatonin is a multifunctional hormone synthesized in the pineal gland and peripheral reproductive tissues that regulates many biological processes. There is increasing evidence for a role of melatonin in oocyte maturation and embryonic development in various mammals. However, no study has reported evidence for the existence of melatonergic system, such as melatonin synthesis enzymes, melatonin membrane receptors, or melatonin binding sites in non-human primate cumulus–oocyte complexes (COCs).

中文翻译：

---

食蟹猴卵丘-卵母细胞复合物减数分裂成熟过程中褪黑激素系统的表达

褪黑激素是一种在松果体和周围生殖组织中合成的多功能激素，可调节许多生物过程。越来越多的证据表明褪黑激素在各种哺乳动物的卵母细胞成熟和胚胎发育中发挥着作用。然而，还没有研究报告褪黑激素系统存在的证据，例如褪黑激素合成酶、褪黑激素膜受体或非人类灵长类动物卵丘-卵母细胞复合物（COC）中的褪黑激素结合位点。