Early colonization of intestinal microbiota during the neonatal stage plays an important role on the development of intestinal immune system and nutrients absorption of the host.Compared to the normal birth weight(NBW...Early colonization of intestinal microbiota during the neonatal stage plays an important role on the development of intestinal immune system and nutrients absorption of the host.Compared to the normal birth weight(NBW)piglets,intrauterine growth restricted(IUGR)piglets have a different intestinal microbiota during their early life,which is related to maternal imprinting on intestinal microbial succession during gestation,at birth and via suckling.Imbalanced allocation of limited nutrients among fetuses during gestation could be one of the main causes for impaired intestinal development and microbiota colonization in neonatal IUGR piglets.In this review,we summarized the potential impact of maternal imprinting on the colonization of the intestinal microbiota in IUGR piglets,including maternal undernutrition,imbalanced allocation of nutrients among fetuses,as well as vertical microbial transmission from mother to offspring during gestation and lactation.At the same time,we give information about the current maternal nutritional strategies(mainly breastfeeding,probiotics and prebiotics)to help colonization of the advantageous intestinal microbiota for IUGR piglets.展开更多
目的:研究三丁酸甘油酯(tributyrin,TB)对宫内发育迟缓(intrauterine growth retardation,IUGR)哺乳仔猪肝脏抗氧化和线粒体功能的调节作用。方法:选取8头正常初生体质量仔猪和16头IUGR仔猪,将IUGR仔猪随机均分为2组,分别饲喂基础人工乳...目的:研究三丁酸甘油酯(tributyrin,TB)对宫内发育迟缓(intrauterine growth retardation,IUGR)哺乳仔猪肝脏抗氧化和线粒体功能的调节作用。方法:选取8头正常初生体质量仔猪和16头IUGR仔猪,将IUGR仔猪随机均分为2组,分别饲喂基础人工乳(IUGR组)、基础人工乳+0.1%TB(IUGR+TB,IT组),正常仔猪饲喂基础人工乳(NBW组)。从仔猪7日龄开始饲喂,21日龄时每组选取6头体质量接近的仔猪进行屠宰取样,并对肝脏进行组织切片观察,酶活力以及相关酶m RNA表达量的测定。结果:与NBW组相比,IUGR组仔猪的肝脏组织切片出现中央静脉充血现象,而IT组无显著变化。IUGR组仔猪肝脏谷胱甘肽过氧化物酶(glutathione peroxidase,GSH-Px)活力较NBW组显著降低(P<0.05),丙二醛(malondialdehyde,MDA)含量极显著升高(P<0.01),线粒体苹果酸脱氢酶(malate dehydrogenase,MDH)、锰-超氧化物歧化酶(Mn-superoxide dismutase,Mn-SOD)活力显著低于NBW组(P<0.05);与IUGR组相比,IT组仔猪肝脏SOD活力、还原型谷胱甘肽(glutathione,GSH)含量、GSH-Px活力及总抗氧化能力(total antioxidant capacity,T-AOC)均显著升高(P<0.05),且MDA含量极显著降低(P<0.01),线粒体MDH、Mn-SOD活力均显著升高(P<0.05);与NBW组相比,IT组仔猪肝脏GSH含量、T-AOC显著升高(P<0.05),MDA含量极显著降低(P<0.01),其他指标无显著差异。与NBW组相比,IUGR组仔猪肝脏SOD、CAT m RNA表达水平均显著升高(P<0.05),IT组仔猪肝脏SOD、PRDX3 m RNA表达水平均显著升高(P<0.05)。IT组仔猪肝脏CAT m RNA表达水平较IUGR组显著降低(P<0.05),PRDX3 m RNA表达水平较IUGR组显著升高(P<0.05)。结论:IUGR哺乳仔猪肝脏抗氧化能力降低,线粒体功能受损。TB能够提高IUGR仔猪肝脏抗氧化能力,保护线粒体免受损伤,具有作为抗氧化剂的潜力。展开更多
基金supported by the Beijing Municipal Natural Science Foundation(S170001)the National Natural Science Foundation of China(31630074,31272449 and 31902170)+2 种基金the National Key Research and Development Program of China(2016YFD0500506 and 2018YDF0501002)the 111 Project(B16044)the Jinxinnong Animal Science Developmental Foundation.
文摘Early colonization of intestinal microbiota during the neonatal stage plays an important role on the development of intestinal immune system and nutrients absorption of the host.Compared to the normal birth weight(NBW)piglets,intrauterine growth restricted(IUGR)piglets have a different intestinal microbiota during their early life,which is related to maternal imprinting on intestinal microbial succession during gestation,at birth and via suckling.Imbalanced allocation of limited nutrients among fetuses during gestation could be one of the main causes for impaired intestinal development and microbiota colonization in neonatal IUGR piglets.In this review,we summarized the potential impact of maternal imprinting on the colonization of the intestinal microbiota in IUGR piglets,including maternal undernutrition,imbalanced allocation of nutrients among fetuses,as well as vertical microbial transmission from mother to offspring during gestation and lactation.At the same time,we give information about the current maternal nutritional strategies(mainly breastfeeding,probiotics and prebiotics)to help colonization of the advantageous intestinal microbiota for IUGR piglets.
文摘目的:研究三丁酸甘油酯(tributyrin,TB)对宫内发育迟缓(intrauterine growth retardation,IUGR)哺乳仔猪肝脏抗氧化和线粒体功能的调节作用。方法:选取8头正常初生体质量仔猪和16头IUGR仔猪,将IUGR仔猪随机均分为2组,分别饲喂基础人工乳(IUGR组)、基础人工乳+0.1%TB(IUGR+TB,IT组),正常仔猪饲喂基础人工乳(NBW组)。从仔猪7日龄开始饲喂,21日龄时每组选取6头体质量接近的仔猪进行屠宰取样,并对肝脏进行组织切片观察,酶活力以及相关酶m RNA表达量的测定。结果:与NBW组相比,IUGR组仔猪的肝脏组织切片出现中央静脉充血现象,而IT组无显著变化。IUGR组仔猪肝脏谷胱甘肽过氧化物酶(glutathione peroxidase,GSH-Px)活力较NBW组显著降低(P<0.05),丙二醛(malondialdehyde,MDA)含量极显著升高(P<0.01),线粒体苹果酸脱氢酶(malate dehydrogenase,MDH)、锰-超氧化物歧化酶(Mn-superoxide dismutase,Mn-SOD)活力显著低于NBW组(P<0.05);与IUGR组相比,IT组仔猪肝脏SOD活力、还原型谷胱甘肽(glutathione,GSH)含量、GSH-Px活力及总抗氧化能力(total antioxidant capacity,T-AOC)均显著升高(P<0.05),且MDA含量极显著降低(P<0.01),线粒体MDH、Mn-SOD活力均显著升高(P<0.05);与NBW组相比,IT组仔猪肝脏GSH含量、T-AOC显著升高(P<0.05),MDA含量极显著降低(P<0.01),其他指标无显著差异。与NBW组相比,IUGR组仔猪肝脏SOD、CAT m RNA表达水平均显著升高(P<0.05),IT组仔猪肝脏SOD、PRDX3 m RNA表达水平均显著升高(P<0.05)。IT组仔猪肝脏CAT m RNA表达水平较IUGR组显著降低(P<0.05),PRDX3 m RNA表达水平较IUGR组显著升高(P<0.05)。结论:IUGR哺乳仔猪肝脏抗氧化能力降低,线粒体功能受损。TB能够提高IUGR仔猪肝脏抗氧化能力,保护线粒体免受损伤,具有作为抗氧化剂的潜力。
