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Transport of arsenolipids to the milk of a nursing mother after consuming salmon fish
- Objective:
We address two questions relevant to infants' exposure to potentially toxic arsenolipids, namely, are the arsenolipids naturally present in fish transported intact to a mother's milk, and what is the efficiency of this transport.
Methods:
We investigated the transport of arsenolipids and other arsenic species present in fish to mother's milk by analyzing the milk of a single nursing mother at 15 sampling times over a 3-day period after she had consumed a meal of salmon. Total arsenic values were obtained by elemental mass spectrometry, and arsenic species were measured by HPLC coupled to both elemental and molecular mass spectrometry.
Results:
Total arsenic increased from background levels (0.1 mu g As kg(-1)) to a peak value of 1.72 lig As kg(-1) eight hours after the fish meal. The pattern for arsenolipids was similar to that of total arsenic, increasing from undetectable background levels (< 0.01 mu g As kg(-1)) to a peak after eight hours of 0.45 mu g As kg(-1). Most of the remaining total arsenic in theObjective:
We address two questions relevant to infants' exposure to potentially toxic arsenolipids, namely, are the arsenolipids naturally present in fish transported intact to a mother's milk, and what is the efficiency of this transport.
Methods:
We investigated the transport of arsenolipids and other arsenic species present in fish to mother's milk by analyzing the milk of a single nursing mother at 15 sampling times over a 3-day period after she had consumed a meal of salmon. Total arsenic values were obtained by elemental mass spectrometry, and arsenic species were measured by HPLC coupled to both elemental and molecular mass spectrometry.
Results:
Total arsenic increased from background levels (0.1 mu g As kg(-1)) to a peak value of 1.72 lig As kg(-1) eight hours after the fish meal. The pattern for arsenolipids was similar to that of total arsenic, increasing from undetectable background levels (< 0.01 mu g As kg(-1)) to a peak after eight hours of 0.45 mu g As kg(-1). Most of the remaining total arsenic in the milk was accounted for by arsenobetaine. The major arsenolipids in the salmon were arsenic hydrocarbons (AsHCs; 55 % of total arsenolipids), and these compounds were also the dominant arsenolipids in the milk where they contributed over 90 % of the total arsenolipids.
Conclusions:
Our study has shown that ca 2-3 % of arsenic hydrocarbons, natural constituents of fish, can be directly transferred unchanged to the milk of a nursing mother. In view of the potential neurotoxicity of AsHCs, the effects of these compounds on the brain developmental stage of infants need to be investigated.…
Author details: | Chan XiongORCiD, Michael StibollerORCiD, Ronald A. GlabonjatORCiD, Jaqueline Rieger, Lhiam PatonORCiD, Kevin A. Francesconi |
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DOI: | https://doi.org/10.1016/j.jtemb.2020.126502 |
ISSN: | 0946-672X |
Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/32344278 |
Title of parent work (English): | Journal of trace elements in medicine and biology |
Publisher: | Elsevier |
Place of publishing: | München |
Publication type: | Article |
Language: | English |
Date of first publication: | 2020/04/09 |
Publication year: | 2020 |
Release date: | 2024/01/12 |
Tag: | HPLC/HR-ESMS; HPLC/ICPMS; arsenolipids; human milk; salmon fish |
Volume: | 61 |
Article number: | 126502 |
Number of pages: | 6 |
Funding institution: | Austrian Science FundAustrian Science Fund (FWF) [FWF I2412-B21, FWF; J-4315-B21]; NAWI Graz |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Ernährungswissenschaft |
DDC classification: | 5 Naturwissenschaften und Mathematik / 54 Chemie / 540 Chemie und zugeordnete Wissenschaften |
5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie | |
6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 610 Medizin und Gesundheit | |
Peer review: | Referiert |