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Accumulation of mercury in the anterior pituitary of rats following oral or intraperitoneal administration of methyl mercury

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Virchows Archiv B

Summary

A sensitive histochemical technique has been used to visualize the ultrastructural localization of mercury in the anterior pituitary of rats which have been exposed to methyl mercury. After administration of methyl mercury in the drinking water (20 mg × 1−1 methyl mercury in distilled water) or intraperitoneally (daily dose 100 ug or 200 ug methyl mercury) intracellular accumulations of mercury were found in the lysosomes and granules of secretory cells (somatotrophs, thyrotrophs and corticotrophs). In non-secretory cells (follicular cell and marginal layer cells) mercury deposits were found in lysosomes. In orally treated rats, the number of mercury deposits increased significantly with time up to day 21. In rats exposed intraperitoneally, a continuous increase was seen in intracellular mercury accumulation. Apart from vacuolation of lysosomes, no structural damage was observed in the cells containing mercury.

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  1. Institute of Anatomy B (Neurobiology), University of Aarhus, DK-8000, Aarhus C, Denmark

    Bjarne Møller-Madsen & Ole Thorlacius-Ussing

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  1. Bjarne Møller-Madsen
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  2. Ole Thorlacius-Ussing
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Møller-Madsen, B., Thorlacius-Ussing, O. Accumulation of mercury in the anterior pituitary of rats following oral or intraperitoneal administration of methyl mercury. Virchows Archiv B Cell Pathol 51, 303–311 (1986). https://doi.org/10.1007/BF02899039

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  • DOI: https://doi.org/10.1007/BF02899039

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