黑素补充剂在体外没有改善绵羊化前或化后的发育.
M Carvajal-Serna1, N Martínez de Los Reyes2, P Marigorta2
1Departamento de Reproducción Animal, INIA, CSIC, Madrid, Spain; Grupo BIOFITER-Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Veterinaria, Instituto Universitario de Investigación en Ciencias Ambientales de Aragón (IUCA), Universidad de Zaragoza, Zaragoza, Spain.
Theriogenology
|April 10, 2025
概括
黑素补充剂在体外没有改善绵羊胚胎的发育. 虽然没有影响早期阶段,但高度的黑激素降低了后期胚胎发育中的表皮质细胞存活率.
科学领域:
- 生殖生物学 生殖生物学
- 胚胎学 胚胎学
- 动物科学动物科学
背景情况:
- 黑色素调节羊的生殖季节性.
- 黑素补充剂在体内和体外用于增强生育能力和胚胎发育.
- 之前的研究仅在体外评估了黑激素的效果,直到化胚芽细胞阶段.
研究的目的:
- 评估黑激素补充剂对绵羊胚胎发育的影响,从卵细胞成熟到化后的阶段.
- 为了研究黑激素对三种主要胚胎血统的发育的影响在体外.
主要方法:
- 绵羊卵细胞经历了体外成熟 (IVM),体外受精 (IVF) 和体外培养 (IVC) 与黑素 (10-8或10-6M).
- 在第8天评估胚胎发育的裂变率和胚囊细胞发育率.
- 胚胎的存活,生长和血统发展 (低质细胞和高质细胞) 在第12天被评估.
主要成果:
- 补充黑素在第8天没有改变裂变或囊胚细胞的速率.
- 在第12天,没有观察到对胚胎存活或生长的显著影响.
- 低质细胞发育没有受到影响,但在第12天,随着10-6M的黑色素治疗从囊阶段开始,表质细胞生存率下降.
结论:
- 在绵羊卵细胞成熟,受精和早期胚胎培养期间补充黑素并没有为体外胚胎生产带来明显的好处.
- 高度的黑激素 (10-6M) 在化后的胚胎发育阶段对表皮质细胞存活率产生了负面影响.
- 需要进一步的研究来澄清黑激素在绵羊生殖技术中的作用和最佳应用.
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