甘氨酸酸可通过减弱肉中的TLR4/NF-κB通路来改善DSS诱导的肠壁功能障碍
Yaqi Chang1, Ke Wang1, Guangmang Liu1
1Institute of Animal Nutrition, Key Laboratory for Animal Disease-Resistance Nutrition of China, Ministry of Education, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.
Journal of animal science and biotechnology
|January 19, 2024
概括
甘氨酸酸盐 (Zn-Gly) 在炎症期间改善了子的生长和肠道健康. 它通过调节关键炎症通路来增强肠道形态和屏障功能.
科学领域:
- 动物营养 动物营养
- 胃肠病学 胃肠病学
- 免疫学 免疫学 免疫学
背景情况:
- 甘氨酸 (Zn-Gly) 具有抗炎和促进生长的作用.
- 尚不清楚Zn-Gly改善桃谷患肠道炎症的肠道屏障功能的具体机制.
研究的目的:
- 为了研究Zn-Gly补充剂对谷子肠道屏障功能和肠道炎症的影响.
- 阐明潜在的分子机制,包括TLR4/MYD88/NF-κB信号通路.
主要方法:
- 三百只1天大的桃谷被随机分配到五组.
- 组包括一个对照组,一种硫酸 (DSS) 诱导的炎症模型和三个实验组,补充了70,120或170毫克/公斤Zn作为Zn-Gly.
- 评估了肠道形态,屏障功能标记物 (D-LA,FITC-D),炎症细胞因子和关键信号分子的基因/蛋白质表达.
主要成果:
- 补充Zn-Gly显著改善了体重,状的高度和与密室的比率,同时降低了密室深度.
- 通过减少D-乳酸和FITC-D流量,Zn-Gly增加了杯状细胞数量并增强了肠道屏障的完整性.
- 补充剂降低了促炎性细胞因子 (IL-1β,IL-6,TNF-α) 和增加了抗炎性细胞因子 (IL-10,IL-22,sIgA,IgG). 它还调节了紧结蛋白 (CLDN-1,OCLN,CLDN-2) 的表达,并降低了TLR4/MYD88/NF-κB信号通路的调节.
结论:
- 补充Zn-Gly有效改善体重,并减轻子的肠道损伤.
- 这些益处归因于调节肠道形态,增强屏障功能,并通过TLR4/MYD88/NF-κB信号通路调节肠道炎症.
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