L-Cysteine protects intestinal integrity, attenuates intestinal inflammation and oxidant stress, and modulates NF-B and Nrf2 pathways in weaned piglets after LPS challenge
L-Cysteine protects intestinal integrity, attenuates intestinal inflammation and oxidant stress, and modulates NF-B and Nrf2 pathways in weaned piglets after LPS challenge
复制标题
L-半胱氨酸可保护断奶仔猪 LPS 攻击后的肠道完整性、减轻肠道炎症和氧化应激并调节 NF-B 和 Nrf2 通路
DOI：
10.1177/1753425916632303
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发表时间：
2016-04-01
期刊：
影响因子：
3.2
通讯作者：
Hu, Cai Hong
中科院分区：
文献类型：
--
作者：
Song, Ze he;Tong, Guo;Hu, Cai Hong
In this study we investigated whether L-cysteine (L-cys) could alleviate LPS-induced intestinal disruption and its underlying mechanism. Piglets fed with an L-cys-supplemented diet had higher average daily gain. L-cys alleviated LPS-induced structural and functional disruption of intestine in weanling piglets, as demonstrated by higher villus height, villus height (VH) to crypt depth (CD) ratio, and transepithelial electrical resistance (TER) and lower FITC-dextran 4 (FD4) kDa flux in jejunum and ileum. Supplementation with L-cys up-regulated occludin and claudin-1 expression, reduced caspase-3 activity and enhanced proliferating cell nuclear antigen expression of jejunum and ileum relative to LPS group. Additionally, L-cys suppressed the LPS-induced intestinal inflammation and oxidative stress, as demonstrated by down-regulated TNF-, IL-6 and IL-8 mRNA levels, increased catalase, superoxide dismutase, glutathione peroxidase activity, glutathione (GSH) contents and the ratio of GSH and oxidized glutathione in jejunum and ileum. Finally, a diet supplemented with L-cys inhibited NF-B(p65) nuclear translocation and elevated NF erythroid 2-related factor 2 (Nrf2) translocation compared with the LPS group. Collectively, our results indicated the protective function of L-cys on intestinal mucosa barrier may closely associated with its anti-inflammation, antioxidant and regulating effect on the NF-B and Nrf2 signaling pathways.
