Dietary Nucleotides Supplementation Improves the Intestinal Development and Immune Function of Neonates with Intra-Uterine Growth Restriction in a Pig Model

被引：50

作者：

Che, Lianqiang ^{[1
]}

Hu, Liang ^{[1
]}

Liu, Yan ^{[1
]}

Yan, Chuan ^{[1
]}

Peng, Xie ^{[1
]}

Xu, Qin ^{[1
]}

Wang, Ru ^{[1
]}

Cheng, Yuanfang ^{[1
,3
]}

Chen, Hong ^{[2
]}

Fang, Zhengfeng ^{[1
]}

Lin, Yan ^{[1
]}

Xu, Shengyu ^{[1
]}

Feng, Bin ^{[1
]}

Chen, Daiwen ^{[1
]}

Wu, De ^{[1
]}

机构：

[1] Sichuan Agr Univ, Inst Anim Nutr, 211 Huimin Rd, Chengdu 611130, Sichuan, Peoples R China

[2] Sichuan Agr Univ, Coll Food Sci, 211 Huimin Rd, Chengdu 611130, Sichuan, Peoples R China

[3] Tongwei Grp Co Ltd, Inst Livestock Nutr, 588 Tianfu Rd, Chengdu 610041, Sichuan, Peoples R China

来源：

PLOS ONE | 2016年 / 11卷 / 06期

基金：

中国国家自然科学基金;

关键词：

FORMULA-FED INFANTS; TOLL-LIKE RECEPTORS; NECROTIZING ENTEROCOLITIS; EXOGENOUS NUCLEOTIDES; GUT STRUCTURE; PERFORMANCE; IUGR; PROLIFERATION; RETARDATION; DIFFERENTIATION;

D O I：

10.1371/journal.pone.0157314

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The current study aimed to determine whether dietary nucleotides supplementation could improve growth performance, intestinal development and immune function of intra-uterine growth restricted (IUGR) neonate using pig as animal model. A total of 14 pairs of normal birth weight (NBW) and IUGR piglets (7 days old) were randomly assigned to receive a milk-based control diet (CON diet) or diet supplemented with nucleotides (NT diet) for a period of 21 days. Blood samples, intestinal tissues and digesta were collected at necropsy and analyzed for morphology, digestive enzyme activities, microbial populations, peripheral immune cells, expression of intestinal innate immunity and barrier-related genes and proteins. Compared with NBW piglets, IUGR piglets had significantly lower average daily dry matter intake and body weight gain (P<0.05). Moreover, IUGR markedly decreased the villous height and villi: crypt ratio in duodenum (P<0.05), as well as the maltase activity in jejunum (P<0.05). In addition, IUGR significantly decreased the serum concentrations of IgA, IL-1 beta and IL-10 (P<0.05), as well as the percentage of peripheral lymphocytes (P<0.05). Meanwhile, the down-regulation of innate immunity-related genes such as TOLLIP (P<0.05), TLR-9 (P = 0.08) and TLR-2 (P = 0.07) was observed in the ileum of IUGR relative to NBW piglets. Regardless of birth weight, however, feeding NT diet markedly decreased (P<0.05) feed conversion ratio, increased the villous height in duodenum(P<0.05), activities of lactase and maltase in jejunum (P<0.05), count of peripheral leukocytes (P<0.05), serum concentrations of IgA and IL-1 beta as well as gene expressions of TLR-9, TLR-4 and TOLLIP in ileum (P<0.05). In addition, expressions of tight junction proteins (Claudin-1 and ZO-1) in ileum were markedly increased by feeding NT diet relative to CON diet (P<0.05). These results indicated that IUGR impaired growth performance, intestinal and immune function, but dietary nucleotides supplementation improved nutrients utilization, intestinal function and immunity.

引用

页数：18

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