Hostname: page-component-5c6d5d7d68-sv6ng Total loading time: 0 Render date: 2024-08-08T07:25:16.151Z Has data issue: false hasContentIssue false

On the mechanism of silica toxicity

Published online by Cambridge University Press:  15 May 2009

Dinah M. James
Affiliation:
Department of Pharmacology, Welsh National School of Medicine
J. Marks
Affiliation:
Central Tuberculosis Laboratory, Cardiff
Rights & Permissions [Opens in a new window]

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Silicic acid in its polymerized form is toxic to leucocytes in tissue culture and depresses leucocyte respiration, effects which appear to be paralleled by its inhibition of the cytochrome oxidase enzyme system. There is evidence that silicic acid acts on this system by combining with and inactivating cytochrome c and it is suggested that its effect in vivo may have a similar basis. The inhibitory effect of silicic acid on the two other respiratory enzyme systems studied is considerably less intense and probably non-specific.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1956

References

REFERENCES

Holt, P. F. & Bowcott, J. E. L. (1954). Biochem. J. 57, 471.CrossRefGoogle Scholar
Holt, P. F. & Osborne, S. G. (1953). Brit. J. indust. Med. 10, 152.Google Scholar
Keilin, D. & Hartree, E. F. (1938). Proc. roy. Soc. B, 125, 171.Google Scholar
Kind, P. R. N., King, E. J., Pash, V., Roman, W. & Schmidt, E. (1954). Biochem. J. 56, 45.Google Scholar
King, E. J. (1947). Occup. Med. 4, 26.Google Scholar
Kun, E. & Abood, L. G. (1949). Science, 109, 144.CrossRefGoogle Scholar
Marks, J. & Mason, M. A. (1956). Brit. J. indust. Med. (in the Press).Google Scholar
Scheel, L. D., Fleisher, E. & Klemperer, F. W. (1953). Arch. indust. Hyg. occup. Med. 8, 564.Google Scholar
Slater, E. C. (1949a). Biochem. J. 44, 305.CrossRefGoogle Scholar
Slater, E. C. (1949b). Biochem. J. 45, 1.CrossRefGoogle Scholar
Straub, F., Straub, G. & Grabowski, H. A. (1944). Indust. Engng. Chem. (Anal. ed.), 16, 574.Google Scholar