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Environ Anal Health Toxicol > Volume 38:2023 > Article
Environmental Analysis Health and Toxicology 2023;38(4):e2023023-0. doi: https://doi.org/10.5620/eaht.2023023
Tissue distribution, placental transfer and excretion of silver nanoparticles in pregnant rats after a single oral dose
Khaled Y. Abdel-Halim1 , Elsayed I. Salim2 , Ahmed S. Abdel-Latif3, Sally E. Abu-Risha3
1Mammalian & Aquatic Toxicology Department, Central Agricultural Pesticides Laboratory, Agricultural Research Center, Giza, Egypt
2Tanta University, Faculty of Science, Department of Zoology, Research Lab. of Molecular Carcinogenesis, Tanta, Egypt
3Tanta University, Faculty of Pharmacy, Department of Pharmacology & Toxicology, Tanta, Egypt
Corresponding Author: Khaled Y. Abdel-Halim ,Email: khaled_yassen68@yahoo.com
Received: August 10, 2023;  Accepted: October 10, 2023.
A quantitative assessment of silver nanoparticles (AgNPs) in fluids and some organs of pregnant rats as well as their fetal blood were carried out in this study. A single oral dose (1mg/kg) of AgNPs with a size range of 4-20 nm was administered to pregnant rats on the 19th of gestation. Five groups were euthanized after 10 min, 1, 6, 12, and 24 hr as well as the control group. Total Silver (Ag) contents were measured in bloods (maternal and fetal) and several organs using Inductive Coupled Plasma Optical Emission Spectroscopy (ICP-OES) followed by acid digestion. In maternal blood, AgNPs were found to increase time-dependently after 12 and 24 hr into 0.135 and 0.224 μg/ml, but it was slightly higher in fetal blood (0.32 and 0.31 μg/ml) after 10 min and 1 hr. In other samples: kidneys, liver, spleen, placenta, and uterus the data indicated that NPs were rapidly absorbed from the dosing site (gastrointestinal tract) as evidenced by the detection of Ag in the analyzed samples (fluids and tissues). On the other hand, the cumulative percentages of excretion level in urine was 8.25% which was higher than in feces (4.77%) after 24 hr. These findings indicate the ability of AgNPs to accumulate in pregnant rats and transfer to their fetus imposing adverse outcomes and male formation. Thus, further investigations must be followed for direct and/or indirect exposure to such NPs before decision for their practices.
Keywords: Silver nanoparticles, Pregnant rats, Excretion, ICP-OES, Tissue distribution, Placental transfer
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