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Although lead is a potent developmental neurotoxin, the effects of postnatal lead exposure on progenitor cell proliferation in the hippocampus has not been examined. Postnatal day 25 rats were fed a lead containing diet (1500 ppm lead acetate) for 30-35 days and administered bromodeoxyuridine (BrdU, 50 mg/kg, i.p.) during the last 5 days of lead exposure. Animals were killed 24 h after the last BrdU injection. Proliferation of new cells in the subgranular zone and dentate gyrus was significantly decreased in lead-exposed rats compared to control animals that ate a similar diet devoid of lead. These results suggest that postnatal lead exposure can have significant deleterious effects on progenitor cell proliferation and thus the structure and function of the hippocampus. © 2004 Elsevier Inc. All rights reserved.




Schneider, J. S., Anderson, D. W., Wade, T. V., Smith, M. G., Leibrandt, P., Zuck, L., & Lidsky, T. I. (2005). Inhibition of progenitor cell proliferation in the dentate gyrus of rats following post-weaning lead exposure. NeuroToxicology, 26(1), 141–145. https://doi.org/10.1016/j.neuro.2004.06.006

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