广西地区早产儿氨基酸代谢特点研究  

Characteristics of amino acid metabolism in preterm infants in Guangxi,China

作　　者：林彩娟[1,2,3,4] 耿国兴 彭振仁[2,3] 黄小桃 吴柳霖 徐钰琪 李威 钱家乐 罗静思[1,2,3,4] LIN Cai-Juan;GENG Guo-Xing;PENG Zhen-Ren;HUANG Xiao-Tao;WU Liu-Lin;XU Yu-Qi;LI Wei;QIAN Jia-Le;LUO Jing-Si(Genetic Metabolism Center Laboratory,Maternal and Child Health Care Hospital of Guangxi Zhuang Autonomous Region,Nanning 530012,China)

机构地区：[1]广西壮族自治区妇幼保健院遗传代谢中心实验室,广西南宁530012 [2]广西出生缺陷预防控制研究所,广西南宁530012 [3]广西生殖健康与出生缺陷防治重点实验室,广西南宁530012 [4]广西新生儿疾病筛查中心,广西南宁530012

出　　处：《中国当代儿科杂志》2022年第2期162-168,共7页Chinese Journal of Contemporary Pediatrics

基　　金：广西壮族自治区卫生健康委员会自筹经费科研课题(Z20200684)。

摘　　要：目的探讨广西地区早产儿的氨基酸代谢变化特点。方法回顾性收集2018~2020年于广西新生儿疾病筛查中心进行遗传代谢病筛查且检测结果为阴性的30757例新生儿的临床资料,其中28611例正常足月儿为正常对照组。早产儿2146例,根据胎龄分为极早产组(n=209)、中期早产组(n=307)、晚期早产组(n=1630);根据出生体重分为极低出生体重组(n=161)、低出生体重组(n=1085)、正常出生体重组(n=900);根据出生后采血时间分为3~7 d组(n=1664)、8~14 d组(n=314)、15~28 d组(n=168)。采用串联质谱法检测新生儿干血斑中11种氨基酸水平,并分析其在各组中的水平差异。结果在控制了相关混杂因素后,按胎龄分组,各组间11种氨基酸水平差异均有统计学意义(P<0.05),与正常对照组比较,晚期早产组除瓜氨酸、蛋氨酸外,其余氨基酸水平差异均有统计学意义(P<0.05);按出生体重分组,各组间11种氨基酸水平差异均有统计学意义(P<0.05);按采血时间分组,除鸟氨酸外其余氨基酸在各组间水平差异均有统计学意义(P<0.05)。结论广西地区早产儿体内氨基酸在不同胎龄、出生体重和采血日龄呈现不同的代谢差异,为实验室建立早产儿血氨基酸水平参考标准和临床判读,以及改善早产儿营养代谢状况提供了科学依据。Objective To study the characteristics of amino acid metabolism in preterm infants in Guangxi,China.Methods A retrospective analysis was performed on the medical data of 30757 neonates who underwent the screening for inherited metabolic diseases and had negative results in Guangxi Neonatal Disease Screening Center from 2018 to 2020.Among these neonates,there were 28611 normal full-term infants(control group)and 2146 preterm infants(preterm birth group).According to gestational age,the preterm infants were further divided into four groups:very preterm(n=209),moderately preterm(n=307),and late preterm group(n=1630).According to birth weight,they were divided into three groups:very low birth weight group(n=161),low birth weight group(n=1085),and normal birth weight group(n=900).According to blood collection time,they were divided into three groups:3-7 days group(n=1664),8-14 days group(n=314)and 15-28 days group(n=168).Tandem mass spectrometry was performed to measure the levels of 11 amino acids in dried blood spots,which were then compared between groups.Results After adjustment for confounding factors,there were significant differences in the levels of 11 amino acids among different gestational age groups(P<0.05),and significant differences were observed in the levels of the 11 amino acids between the control group and the various preterm groups(except for citrulline and methionine in the late preterm group).There were significant differences in the levels of 11 amino acids among different birth weight groups(P<0.05).Except for ornithine,there were significant differences in the levels of other amino acids among the different blood collection time groups(P<0.05).Conclusions Gestational age,birth weight and blood collection time all affect amino acid metabolism in preterm infants in Guangxi,China.This provides a basis for the laboratory to establish the reference standard and clinical interpretation of blood amino acid levels in preterm infants,and to improve the nutritional metabolism of preterm infants.

关 键 词：氨基酸 代谢 广西地区 早产儿 

分 类 号：R722.6[医药卫生—儿科]