PMID- 31617687 OWN - NLM STAT- MEDLINE DCOM- 20210528 LR - 20210528 IS - 2472-1727 (Electronic) VI - 112 IP - 1 DP - 2020 Jan 1 TI - Toxic effects of maternal exposure to silver nanoparticles on mice fetal development during pregnancy. PG - 81-92 LID - 10.1002/bdr2.1605 [doi] AB - BACKGROUND: Silver nanoparticles (SNPs) are being increasingly used in medical and industrial products. The aim of the present study was to evaluate the toxic effect of maternal exposure to SNP (1 mg/kg/day, 70 nm) on fetal development during the first and second weeks of pregnancy. METHODS: Twenty-four pregnant mice were divided into four groups. SNP was administered by oral gavage on gestational days (GD) 1-7, GD8-14, or GD1-14. Phosphate buffered saline was administered by oral gavage to a control group. On GD15, the uteri were excised, and fetal bodies and placentas were weighed. Head and placental circumferences and fetal crown-rump length were measured, and fetuses were evaluated for external malformation. TUNEL assay was performed to assess apoptosis in the fetal midbrain. Hematoxylin-eosin staining was carried out to determine changes in fetal histomorphology. Fetal liver cells were used for karyotype analysis. RESULTS: Significant decreases in fetal body weight, and crown-rump length were observed in SNP-treated groups. Exencephaly, small head, scoliosis, lordosis, short thorax and trunk, also fused digits were detected in SNPs-treated groups. Fibrosis, necrosis, and apoptotic cells in fetal midbrains increased significantly in the GD8-14 and GD1-14 groups compared to the control group. Chromosomal features were not different in fetuses between groups. CONCLUSIONS: Exposure to 1 mg/kg/day SNP during pregnancy in mice adversely affected on fetal development. The results do suggest a potential risk for humans that needs to be followed up with more definitive investigations. CI - (c) 2019 Wiley Periodicals, Inc. FAU - Mozafari, Maryam AU - Mozafari M AD - Department of Biology, Ashkezar Islamic Azad University, Yazd, Iran. FAU - Khoradmehr, Arezoo AU - Khoradmehr A AUID- ORCID: 0000-0001-7460-1616 AD - Research and Clinical Center for Infertility, Yazd Reproduction Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. FAU - Danafar, Amirhossein AU - Danafar A AD - Seyedhassani Medical Sciences Center, Yazd, Iran. FAU - Miresmaeili, Mohsen AU - Miresmaeili M AD - Science and Arts University, Biology department, Yazd, Iran. FAU - Kalantar, Seyed Mehdi AU - Kalantar SM AD - Research and Clinical Center for Infertility, Yazd Reproduction Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20191016 PL - United States TA - Birth Defects Res JT - Birth defects research JID - 101701004 RN - 3M4G523W1G (Silver) SB - IM MH - Animals MH - Female MH - Fetal Development/drug effects MH - Fetus/drug effects MH - Male MH - Maternal Exposure/*adverse effects MH - Metal Nanoparticles/*adverse effects/*toxicity MH - Mice MH - Mice, Inbred Strains MH - Placenta/drug effects MH - Pregnancy MH - Silver/adverse effects/toxicity OTO - NOTNLM OT - apoptotic cell OT - histomorphology OT - mouse OT - pregnancy OT - silver nanoparticle EDAT- 2019/10/17 06:00 MHDA- 2021/05/29 06:00 CRDT- 2019/10/17 06:00 PHST- 2018/10/01 00:00 [received] PHST- 2019/08/26 00:00 [revised] PHST- 2019/10/03 00:00 [accepted] PHST- 2019/10/17 06:00 [pubmed] PHST- 2021/05/29 06:00 [medline] PHST- 2019/10/17 06:00 [entrez] AID - 10.1002/bdr2.1605 [doi] PST - ppublish SO - Birth Defects Res. 2020 Jan 1;112(1):81-92. doi: 10.1002/bdr2.1605. Epub 2019 Oct 16.