首页> 外文期刊>American Journal of Physiology >Influence of size at birth on the endocrine profiles and expression of uncoupling proteins in subcutaneous adipose tissue, lung, and muscle of neonatal pigs.
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Influence of size at birth on the endocrine profiles and expression of uncoupling proteins in subcutaneous adipose tissue, lung, and muscle of neonatal pigs.

机译:出生时大小对新生猪皮下脂肪组织,肺和肌肉内分泌谱和解偶联蛋白表达的影响。

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Epidemiological studies suggest that infants of low birth weight show poor neonatal growth and increased susceptibility to adult diseases such as diabetes and lung disease. Uncoupling protein 2 and 3 (UCP2 and UCP3) have been implicated in the development of such diseases; pigs provide an ideal model to examine the influence of birth weight due to the natural variance in piglet weight within a litter. This study examined whether birth weight influences the expression of UCP2 and UCP3 in adipose tissue, skeletal muscle, and lung. Piglets from 11 litters were ranked according to birth weight and three from each litter assigned to small (SFD), normal (NFD), or large for dates (LFD) groups. Blood samples and morphometric measurements were taken over the first 14 days of life, and tissue samples were taken on day 7 or 14. Plasma hormone and metabolite concentrations and the expression of UCP2 and UCP3 mRNA in adipose tissue, skeletal muscle, and lung were measured. UCP2 and UCP3 expression in adipose tissuewas lower in the SFD compared with the LFD group on day 7. UCP3 expression in skeletal muscle was higher than that of adipose tissue. Lung UCP2 and skeletal muscle UCP3 mRNA expression were unaffected by size at birth. Regression analysis indicated that UCP3 expression was differentially associated with IGF-1, leptin, and insulin. In conclusion, low birth weight is associated with tissue-specific effects on UCP expression. It remains to be established whether these subsequently contribute to pathological conditions such as diabetes.
机译:流行病学研究表明,低出生体重的婴儿表现出较差的新生儿生长,并且对成人疾病(如糖尿病和肺部疾病)的敏感性增加。分离蛋白2和3(UCP2和UCP3)已经牵涉到此类疾病的发展。猪提供了一个理想的模型来检查出生体重对仔猪体重自然变化的影响。这项研究检查了出生体重是否影响脂肪组织,骨骼肌和肺中UCP2和UCP3的表达。根据出生体重对来自11窝的仔猪进行排名,将每个窝中的三只仔猪分为小(SFD),正常(NFD)或大枣(LFD)组。在生命的前14天进行血样和形态测量,并在第7天或第14天进行组织采样。测量脂肪组织,骨骼肌和肺中血浆激素和代谢产物的浓度以及UCP2和UCP3 mRNA的表达。 。与第7天的LFD组相比,SFD中脂肪组织中的UCP2和UCP3表达较低。骨骼肌中的UCP3表达高于脂肪组织。肺UCP2和骨骼肌UCP3 mRNA表达在出生时不受大小的影响。回归分析表明UCP3表达与IGF-1,瘦素和胰岛素相关。总之,低出生体重与UCP表达的组织特异性作用有关。这些是否随后导致诸如糖尿病的病理状况尚待确定。

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