孕产妇IgY加速乳杆菌殖民,改善肠道屏障功能和沙门氏杆菌 (Salmonella pullorum) 对幼的抵抗力
Ya-Nan Ding1,2,3, Kun Xie1,2,3, De-Run Wang1,2,3
1College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China.
Animal science journal = Nihon chikusan Gakkaiho
|August 11, 2025
概括
蛋黄中的母体免疫球蛋白Y (IgY) 增强了的胚胎发育和肠道微生物群的多样性. 高水平的IgY可以提高后代的免疫力和肠道屏障功能,增加对沙门氏菌感染的抵抗力.
科学领域:
- 禽畜科学 禽畜科学 禽畜科学
- 免疫学 免疫学 免疫学
- 微生物学 微生物学
背景情况:
- 母亲抗体在鸟类后代的早期免疫力中起着至关重要的作用.
- 蛋黄免疫球蛋白Y (IgY) 是发育的被动免疫的主要来源.
- 了解母体IgY对后代健康和抗病能力的影响对于家禽业至关重要.
研究的目的:
- 研究母卵黄免疫球蛋白Y (IgY) 水平对胚胎发育的影响.
- 评估母体IgY对肠道微生物群组成和后代小的殖民的影响.
- 为了确定母体IgY对幼对沙门氏杆菌感染的耐药性的影响.
主要方法:
- 60名育种者根据蛋黄IgY含量被分为高 (HIgY) 和低 (LIgY) 蛋黄IgY组.
- 在化后的第8天,后代小受到沙门氏菌 (Salmonella pullorum) 的挑战.
- 分析了肠道微生物群的多样性,细菌负载,免疫基因表达 (NOS2,IL-1β,MUC2,Occludin) 和胚胎发育.
主要成果:
- 与LIgY组相比,HIgY组的小胚胎体重增加,肠道微生物群丰富和多样性增加.
- 在7天大的小中,HIgY组表现出较高的乳酸菌的相对丰度.
- 在HIgY组中的后代在感染后减少了,肝脏和盲体的细菌负荷,并改善了肠道屏障基因 (MUC2,Occludin) 和免疫基因 (NOS2,IL-1β) 的表达.
结论:
- 母性IgY显著增强胚胎发育,并促进有益的肠道微生物群殖民,包括乳酸菌.
- 增加的母体IgY可以改善后代的免疫力和肠道屏障完整性,从而提高对沙门氏菌感染的抵抗力.
- 优化母体IgY转移是改善家禽健康和降低疾病易感性的有希望的策略.
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