20.500.12556/RUL-141294 Mercury speciation in prenatal exposure in Slovenian and Croatian population - PHIME study In recent years, several studies have addressed the issue of prenatal exposure to methylmercury (MeHg); however, few have actually analysed MeHg blood concentrations. Our study population included mothers and their new-borns from Slovenia (central region; N = 584) and Croatia (coastal region; N = 234). We have measurements of total Hg (THg) and MeHg in maternal hair, maternal peripheral blood, and cord blood. Cord blood Hg concentrations were low to moderate (median THg = 1.84 ng/g and MeHg = 1.69 ng/g). The proportion of THg as MeHg (%MeHg) in maternal and cord blood varied between 4% and 100% (coefficient of variation, CV = 32%) and between 8% and 100% (CV = 20%), respectively. Our data shows that variability of %MeHg was higher at lower blood THg levels. Concentrations of MeHg in maternal blood and cord blood were highly correlated (Rs = 0.943), in the case of inorganic Hg correlation was significant but weaker (Rs = 0.198). MeHg levels in maternal blood and cord blood were positively associated with seafood intake, maternal age, and negatively associated with pre-pregnancy BMI. Additionally, MeHg in maternal blood was positively associated with plasma selenium levels, and cord blood MeHg was negatively associated with parity. The results of multiple linear regression models showed that speciation analysis provides more defined estimation of prenatal exposure in association modelling. Associations between Hg exposure and cognitive performance of children (assessed using Bayley Scales of Infant and Toddler development) adjusted for maternal or child Apolipoprotein E genotypes showed higher model R2 and lower p-values when adjusted for MeHg compared to THg. This study demonstrates that Hg speciation improves the association between exposure and possible negative health effects. ekologija varstvo naravnih virov ogrožanje okolja in njegovo varstvo true false true Angleški jezik Angleški jezik Članek v reviji 2022-09-28 08:12:54 2022-09-28 08:13:02 2022-09-29 04:03:38 0000-00-00 00:00:00 2019 0 0 Str. 108627-1-108627-10 Vol. 177 art. 108627 2019 0000-00-00 Zaloznikova NiDoloceno NiDoloceno 0000-00-00 0000-00-00 2019-01-01 502/504 0013-9351 10.1016/j.envres.2019.108627 32549415 1-s2.0-S0013935119304244-main.pdf 1-s2.0-S0013935119304244-main.pdf 1 D77FB605B3FA89E616E4074F0E8AC8E6 b301387f119b7341b705e880e1d4d25c5b3776e6a431d5ba624a91366767835f 76fcb8bd-3ef5-11ed-9c94-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=162288 https://www.sciencedirect.com/science/article/pii/S0013935119304244?via%3Dihub 1 a1ec011c-3ef4-11ed-9c94-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=162286 Fakulteta za farmacijo 0 0 0