PMID- 20167364 OWN - NLM STAT- MEDLINE DCOM- 20100624 LR - 20151119 IS - 1532-3102 (Electronic) IS - 0143-4004 (Linking) VI - 31 IP - 4 DP - 2010 Apr TI - Gestational age and dose influence on placental transfer of 63Ni in rats. PG - 305-11 LID - 10.1016/j.placenta.2010.01.015 [doi] AB - The effects of gestational age and dose of nickel exposure on regulating and influencing placental transfer were investigated. Pregnant rats on gestational day (GD) 12, 15 or 20 were injected intraperitoneally with saline, 64,320 or 640 kBq/kg body weight of (63)Ni. Twenty-four hours after administration, samples were harvested from each for measurement of radioactivity by liquid scintillation counting and for autoradiography. In placenta, amniotic fluid and fetal membrane, (63)Ni concentrations increased with increasing doses and gestational age. In fetus, (63)Ni concentrations reached a maximum on GD 15 and then declined on GD 20 although they maintained a dose-dependency for each GD group. In fetal blood on GD 20, (63)Ni concentration increased dose-dependently and was higher than in maternal blood. The autoradiographs demonstrated that (63)Ni radioactivity was located within placental basal lamina, fetal bones and most organs. These findings suggest that the nickel uptake, retention and transport in placenta increase dose- and gestation age-dependently, and nickel transfer through placental barrier is primarily from mother into the fetus, but hardly from fetus to mother. CI - Copyright 2010 Elsevier Ltd. All rights reserved. FAU - Wang, X-W AU - Wang XW AD - Department of Neuroscience, Anatomy, Histology and Embryology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, Gansu, PR China. FAU - Gu, J-Y AU - Gu JY FAU - Li, Z AU - Li Z FAU - Song, Y-F AU - Song YF FAU - Wu, W-S AU - Wu WS FAU - Hou, Y-P AU - Hou YP LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20100218 PL - Netherlands TA - Placenta JT - Placenta JID - 8006349 RN - 0 (Radioisotopes) RN - 696BNE976J (nickel chloride) RN - 7OV03QG267 (Nickel) SB - IM MH - Abnormalities, Drug-Induced MH - Amniotic Fluid/metabolism MH - Animals MH - Autoradiography MH - Bone and Bones/embryology/metabolism MH - Extraembryonic Membranes/metabolism MH - Female MH - Fetus/metabolism MH - *Gestational Age MH - Kidney/metabolism MH - Maternal-Fetal Exchange MH - Nickel/administration & dosage/*metabolism/toxicity MH - Placenta/metabolism MH - Pregnancy MH - Radioisotopes/*metabolism MH - Rats MH - Rats, Wistar EDAT- 2010/02/20 06:00 MHDA- 2010/06/25 06:00 CRDT- 2010/02/20 06:00 PHST- 2009/11/16 00:00 [received] PHST- 2010/01/24 00:00 [revised] PHST- 2010/01/26 00:00 [accepted] PHST- 2010/02/20 06:00 [entrez] PHST- 2010/02/20 06:00 [pubmed] PHST- 2010/06/25 06:00 [medline] AID - S0143-4004(10)00041-X [pii] AID - 10.1016/j.placenta.2010.01.015 [doi] PST - ppublish SO - Placenta. 2010 Apr;31(4):305-11. doi: 10.1016/j.placenta.2010.01.015. Epub 2010 Feb 18.