PMID: 3213424Jan 1, 1988Paper

Abnormal neuronal distribution within the cerebral cortex after prenatal methylmercury intoxication

Acta Neuropathologica
N H Peckham, B H Choi

Abstract

C57BL/6J mice were poisoned with methylmercury during pregnancy, and the location of heavily labeled neurons generated at embryonic day 16 was determined by tritiated thymidine autoradiography of the cerebral cortex of offspring at postnatal day 10. Camera lucida plotting of the distribution of radioactively labeled cortical neurons revealed statistically significant differences between control and methylmercury-treated groups. While control animals showed regular and tight packing of labeled neurons within the upper part of the cortical layer II, in methylmercury-treated animals such neurons were irregularly distributed throughout cortical layers II and III. Short-term intermittent and long-term low-dosage regimens of intoxication produced similar results. These findings support the hypothesis that prenatal methylmercury poisoning results in abnormal neuronal migration and anomalous cortical cytoarchitectonic patterning within the developing brain and provide a possible morphological basis for some of the neurobehavioral abnormalities that may be observed in association with sublethal prenatal intoxication in humans.

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Citations

Apr 24, 2007·Neurotoxicity Research·Carolina JohanssonSandra Ceccatelli
Jan 1, 1989·Progress in Neurobiology·B H Choi
Mar 28, 2008·Toxicological Sciences : an Official Journal of the Society of Toxicology·Matthew D RandJeffrey Bond
Apr 1, 1997·Reviews on Environmental Health·J C Hansen, G Danscher
May 5, 2009·Neurotoxicology·Matthew D RandTodd A Clason
May 17, 2008·Regulatory Toxicology and Pharmacology : RTP·Anna F CastoldiLuigi Manzo
Jan 1, 1990·Toxicologic Pathology·P M Rodier
Jun 6, 2021·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·M Diana NeelyAaron B Bowman

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