| Elevated cord serum manganese level is associated with a neonatal high ponderal index. | |
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MedLine Citation:
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PMID: 23164521 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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BACKGROUND: The effects of low-level prenatal manganese (Mn) exposure on neonatal growth remain unclear. The level of fetal Mn that may be considered "safe" has never been examined. METHODS: A multicenter study including 1377 mother-infant pairs was conducted from 2008 through 2009 in Shanghai. Mn concentrations were determined for both the cord and maternal serum, as well as neonatal birth weight and birth length. The ponderal index (PI) was calculated as (birth weight g/birth length cm(3))×100, and a ponderal index ≥3.17 was defined as a high ponderal index (HPI). RESULTS: The median serum Mn concentration was 4.0μg/L in the cord blood, and was 2.8μg/L in maternal blood. Of 1377 infants, 135 (9.8%) had a HPI. After adjusting for potential confounders, cord serum Mn was not associated with birth weight. However, there was a linear relationship between the cord serum Mn and the birth length (adjusted ß=-0.5, 95% CI=-0.7 to -0.2, p<0.0001). Additionally, a nonlinear relationship was observed between the cord serum Mn and the ponderal index, and between the cord serum Mn and HPI. The ponderal index and the prevalence of HPI increased with Mn levels above 5.0μg/L (Log Mn ≥0.7). A high level of Mn in the cord (≥5.0μg/L) was associated with a higher ponderal index (adjusted ß=0.2, 95% CI=0.1 to 0.2, p<0.001) and a high risk of HPI (adjusted OR=3.3, 95% CI=1.8-6.0, p<0.001). CONCLUSIONS: Higher prenatal Mn exposure, even at a low level, is associated with a higher prevalence of HPI in a nonlinear pattern. Cord serum Mn levels less than 5.0μg/L may be considered safe with respect to neonatal ponderal index assessment. |
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Authors:
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Xiaodan Yu; Lulu Cao; Xiaogang Yu |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-11-16 |
Journal Detail:
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Title: Environmental research Volume: - ISSN: 1096-0953 ISO Abbreviation: Environ. Res. Publication Date: 2012 Nov |
Date Detail:
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Created Date: 2012-11-20 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0147621 Medline TA: Environ Res Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2012 Elsevier Inc. All rights reserved. |
Affiliation:
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MOE-Shanghai Key Lab of Children's Environmental Health, XinHua Hospital affiliated to Shanghai Jiao Tong University School of Medicine, 1665 Kong Jiang Road, Shanghai 200092, China. Electronic address: shahd1230@yahoo.com.cn. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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