Low blood lead levels and hemoglobin concentrations in preschool children in China.

IF 1.1 4区 环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES
Jianghong Liu, Linda McCauley, Chonghuai Yan, Xiaoming Shen, Jennifer A Pinto-Martin
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引用次数: 8

Abstract

It is well known that lead (Pb) produces reduced haemoglobin (Hb) levels and risk of anemia when blood lead levels (BPb) are greater than 20 µg dL-1. Two recent studies reported an increased risk of anemia in children with BPb between 10-20 µg dL-1, but few studies examined the association between Hb levels or risk of anemia and BPb under 10 µg dL-1. In the present study this association was examined using data of 140 preschool children from a larger prospective cohort study in China. Data showed that compared to children with BPb <5 µg dL-1, children with BPb between 7.5-10 µg dL-1 had significantly lower Hb levels, but there were no marked differences for other groups. A linear regression model showed a negative relationship between BPb and Hb levels after controlling for age, gender, height, weight, and iron (Fe) deficiency. This finding, although limited by a small sample size, suggests it may be important to examine Pb-induced hemosynthesis effect at concentrations less than 10 µg dL-1.

中国学龄前儿童低血铅水平和血红蛋白浓度。
众所周知,铅(Pb)产生血红蛋白(Hb)水平降低和贫血的风险,当血铅水平(BPb)大于20µg dL-1。最近的两项研究报告了血铅含量在10-20µg dL-1之间的儿童贫血风险增加,但很少有研究检查Hb水平或贫血风险与血铅含量低于10µg dL-1之间的关系。在本研究中,使用来自中国一项大型前瞻性队列研究的140名学龄前儿童的数据来检验这种关联。数据显示,与BPb -1的儿童相比,BPb在7.5-10µg dL-1之间的儿童Hb水平显著降低,但其他组间无显著差异。线性回归模型显示,在控制年龄、性别、身高、体重和铁(Fe)缺乏后,BPb和Hb水平呈负相关。这一发现虽然受到样本量小的限制,但表明在浓度低于10µg dL-1时检查铅诱导的血液合成效应可能是重要的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Toxicological and Environmental Chemistry
Toxicological and Environmental Chemistry ENVIRONMENTAL SCIENCES-TOXICOLOGY
CiteScore
3.50
自引率
5.60%
发文量
0
期刊介绍: The journal is interdisciplinary in outlook, and manuscripts published in it cover all relevant areas: • inorganic chemistry – trace elements in food and the environment, metal complexes and chelates; • organic chemistry – environmental fate, chemical reactions, metabolites and secondary products, synthesis of standards and labelled materials; • physical chemistry – photochemistry, radiochemistry; • environmental chemistry – sources, fate, and sinks of xenochemicals, environmental partitioning and transport, degradation and deposition; • analytical chemistry – development and optimisation of analytical methods, instrumental and methodological advances, miniaturisation and automation; • biological chemistry – pharmacology and toxicology, uptake, metabolism, disposition of xenochemicals, structure-activity relationships, modes of action, ecotoxicological testing.
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