用于婴儿配方的轻松加工的脱脂牛奶衍生乳清蛋白缩物:对早产猪肠道发育和免疫力的影响
Karoline Aasmul-Olsen1, Halise Gül Akıllıoğlu2, Line Iadsatian Christiansen1
1Section for Comparative Paediatrics and Nutrition, Department of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg, 1870, Denmark.
Molecular nutrition & food research
|February 23, 2024
概括
乳清蛋白缩物 (WPC) 用于婴儿配方奶粉的加工可能会损害早产婴儿的发育. 轻度加工的脱脂牛奶衍生的WPC (SPC) 显示出类似的耐受性,但可能会导致亚临床肠道问题,而进一步加工会加剧负面影响.
科学领域:
- 新生儿营养新生儿营养
- 胃肠道生理学 胃肠道生理学
- 免疫学 免疫学 免疫学
背景情况:
- 婴儿配方奶粉加工,特别是乳清蛋白缩剂 (WPC),可以导致蛋白质的修改.
- 这些修改可能对早产新生儿的发育产生显著的不良影响.
研究的目的:
- 调查传统WPC对温和加工的脱脂乳制成WPC (SPC) 对早产新生儿肠道和免疫发育的影响.
- 评估额外的热处理和储存对SPC的影响.
主要方法:
- 作为早产婴儿的典范,早产猪被用含有WPC,SPC,额外热处理SPC (HT-SPC) 或存储HT-SPC (HTS-SPC) 的配方养五天.
- 分析包括临床反应,肠道参数 (例如,MRP积累,粘膜,细菌多样性) 和免疫标记 (例如,T细胞,中性粒细胞).
主要成果:
- SPC含有更多的天然乳酸和没有蛋白质聚合物;尽管梅拉德反应产物 (MRP) 的形成较高,但它显示了与WPC相似的临床和大多数肠道/免疫反应.
- 然而,SPC对肠道MRP积累,粘膜和细菌多样性产生了负面影响.
- 食WPC导致T细胞减少,氧化应激/炎症标志物增加.
- HTS-SPC显示蛋白质聚合和MRP增加,导致抗菌活性降低,营养吸收标记物,中性粒细胞和细胞毒性T细胞减少,以及肠道炎症增加.
结论:
- 轻松加工的SPC提供了比WPC更多的原生蛋白质,但具有更高的MRP水平,导致可比性耐受性,但在早产猪中具有亚临床不良肠道影响.
- 进一步的热处理和储存SPC显著增加MRPs,促进肠道炎症和粘膜损伤.
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