Citations to this article

Hepatocellular copper toxicity and its attenuation by zinc.
M L Schilsky, … , R J Stockert, I Sternlieb
M L Schilsky, … , R J Stockert, I Sternlieb
Published November 1, 1989
Citation Information: J Clin Invest. 1989;84(5):1562-1568. https://doi.org/10.1172/JCI114333.
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Hepatocellular copper toxicity and its attenuation by zinc.

Abstract

We studied the mechanisms by which excess copper exerts, and zinc mitigates, toxic effects on HepG2 cells. Survival and cell growth were reduced in media containing greater than 500 microM copper chloride for 48 h; LD50 was 750 microM. At 1,000 microM copper for 1 h, there was a general reduction of protein synthesis, and no recognizable changes in cellular ultrastructure. Incubation of cells with 200 microM zinc acetate before exposure to copper, raised the LD50 for confluent cells to 1,250 microM copper chloride, improved protein synthesis, and increased synthesis of a 10-kD protein, apparently metallothionein. The mitigation, by zinc, of copper's toxicity may in part be mediated through induction of this protein in the hepatocyte.

Authors

M L Schilsky, R R Blank, M J Czaja, M A Zern, I H Scheinberg, R J Stockert, I Sternlieb

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