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http://cibnor.repositorioinstitucional.mx/jspui/handle/1001/2323| Relationship between self-reported fish and shellfish consumption, carbon and nitrogen stable isotope values and total mercury concentrations in pregnant women (II) from Baja California Sur, Mexico | |
| Rebecca Bentzen J. Margaret Castellini Ramón Gaxiola Robles TANIA ZENTENO SAVIN Lía Celina Méndez Rodríguez | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| DOI: 10.1016/j.toxrep.2014.09.014 URL: https://www.sciencedirect.com/science/article/pii/S221475001400095X | |
| Mercury, Hair, Piscivory, Pregnancy, Stable isotopes | |
| "Seafood is a valuable source of nutrients important for fetal development. However, seafood consumption is the main route of exposure to monomethyl mercury (MeHg+) for humans. MeHg+ is highly bioavailable and potentially adversely affects fetal neurodevelopment. MeHg+ exposure from fish consumption varies significantly by age and trophic level of fish consumed as well as the frequency and amount of fish consumed. This study investigates total Hg concentrations ([THg]) in hair segments of pregnant Mexican women in relation to (1) self-reported frequency of fish and shellfish consumption, (2) maternal trophic level and marine diet contributions, determined using hair carbon (C) and nitrogen (N) stable isotopes, and (3) relates [THg] to various hair advisory thresholds. We also examined whether variation in C and N isotope values is explained by self-reported frequency of fish and shellfish consumption. A significant proportion of hair samples had [THg] higher than suggested agency thresholds and, for women within the range of the various advisory thresholds (1–20 _g g−1), the specific statistic used and threshold applied are important considerations for assessing and communicating risk. Individuals enriched in 15N (_15N values) had higher [THg] as did individuals that reported consuming fish and shellfish more frequently, suggesting that variation in [THg] can be explained by both consumer reported diet and diet as determined by C and N stable isotope assessment. However, at higher reported fish consumption levels the trophic level is maintained while [THg] is paradoxically lower. This suggests that THg exposure and assimilation are more complicated in higher fish frequency consumption categories..." | |
| Elsevier | |
| 2014 | |
| Artículo | |
| Toxicology Reports | |
| Inglés | |
| OTRAS | |
| Versión publicada | |
| publishedVersion - Versión publicada | |
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