title: The Effects of Early Life Lead Exposure on the Expression of Glycogen Synthase Kinase-3β and Insulin-like Growth Factor 1 Receptor in the Hippocampus of Mouse Pups.
abstract: The present study was undertaken to investigate the effects of maternal lead exposure on expression of GSK-3β and IGF1R in the hippocampus of mice offspring. Lead exposure initiated from beginning of gestation to weaning. Lead acetate administered in drinking solutions was dissolved in distilled deionized water at the concentrations of 0.1, 0.5, and 1%, respectively. On the 21st postnatal day, the Pb levels were determined by graphite furnace atomic absorption spectrometry. The expression of GSK-3β and IGF1R in hippocampus was examined by immunohistochemistry and Western blotting. The lead levels in blood and hippocampus of all lead exposure groups were significantly higher than those of the control group (P < 0.05). Compared with the control group, the expression of GSK-3β was increased in lead-exposed groups (P < 0.05), but the expression of IGF1R was decreased (P < 0.05). The high expression of GSK-3β and low expression of IGF1R in the hippocampus of pups may contribute to the neurotoxicity associated with maternal Pb exposure.
authors.affiliation: College of Food Science and Technology, Henan Agriculture University, Agriculture Road 63, Zhengzhou, 450002, China. ln8028@163.com.
authors.forename: Ning
authors.initials: N
authors.lastname: Li
authors.affiliation: College of Food Science and Technology, Henan Agriculture University, Agriculture Road 63, Zhengzhou, 450002, China.
authors.forename: MingWu
authors.initials: M
authors.lastname: Qiao
authors.affiliation: College of Food Science and Technology, Henan Agriculture University, Agriculture Road 63, Zhengzhou, 450002, China.
authors.forename: PingAn
authors.initials: P
authors.lastname: Zhang
authors.affiliation: Public Health College, Zhengzhou University, 450001, Zhengzhou, China.
authors.forename: Xing
authors.initials: X
authors.lastname: Li
authors.affiliation: College of Food Science and Technology, Henan Agriculture University, Agriculture Road 63, Zhengzhou, 450002, China.
authors.forename: Li
authors.initials: L
authors.lastname: Li
authors.affiliation: Public Health College, Zhengzhou University, 450001, Zhengzhou, China.
authors.forename: ZengLi
authors.initials: Z
authors.lastname: Yu
mesh_terms: D000818:Animals; D005260:Female; D038362:Glycogen Synthase Kinase 3 / Q000378:metabolism*; D000071679:Glycogen Synthase Kinase 3 beta; D006624:Hippocampus / Q000187:drug effects* / Q000378:metabolism*; D007854:Lead / Q000633:toxicity*; D051379:Mice; D017526:Receptor, IGF Type 1 / Q000378:metabolism*; D013997:Time Factors
chemical_list: D007854:Lead; D017526:Receptor, IGF Type 1; D000071679:Glycogen Synthase Kinase 3 beta; C000605507:Gsk3b protein, mouse; D038362:Glycogen Synthase Kinase 3
keywords: GSK-3β; Hippocampus; IGF1R; Lead; Neurotoxicity