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Response of L-929 Fibroblasts, Human Gingival Fibroblasts, and Human Tissue Mast Cells to Various Metal Cations

Institute of Histology and Embryology, The University of Vienna, Austria, Institute of General and Experimental Pathology, The University of Vienna, Austria

P. Samorapoompichit

Institute of General and Experimental Pathology, The University of Vienna, Austria

X.H. Rausch-Fan

Institute of General and Experimental Pathology, The University of Vienna, Austria

A. Franz

Institute of General and Experimental Pathology, The University of Vienna, Austria

W. Füreder

Department of Internal Medicine I, Division of Hematology, The University of Vienna, Austria

W.R. Sperr

Department of Internal Medicine I, Division of Hematology, The University of Vienna, Austria

W. Sperr

School of Dentistry, The University of Vienna, Austria

A. Ellinger

Department of Internal Medicine I, Division of Hematology, The University of Vienna, Austria

R. Slavicek

School of Dentistry, The University of Vienna, Austria

G. Boltz-Nitulescu

Institute of General and Experimental Pathology, The University of Vienna, Austria

P. Valent

Department of Internal Medicine I, Division of Hematology, The University of Vienna, Austria

Recent data suggest that under certain conditions, various metal cations are released from dental alloys. These ions may produce adverse effects in various cell types in vivo. In this study, the cytopathogenic effects of 13 metal cations on murine L-929 fibroblasts, human gingival fibroblasts, and human tissue mast cells were analyzed in vitro. Several metal cations (dose range, from 0.0033 to 1.0 mmol/L) were found to induce dose-dependent inhibition of 3H-thymidine incorporation into cultured fibroblasts. The rank order of potency (lowest observed effect level, LOEL) for L-929 fibroblasts was: Ag+ > Pt4+ > Co²⁺ > In³⁺ > Ga3+ > Au3+ > Cu ²⁺ > Ni2+ > Zn2+ > Pd2+ > Mo⁵⁺ > Sn2+ > Cr2+. A similar rank order of potency was obtained for primary human gingival fibroblasts: Pt4+ > Ag+ > Au³⁺ > In3+ > Ga3+ > Ni2+ > Co²⁺ > Zn ²⁺ > Cu²⁺ > Cr²⁺ > Pd2+ > Mo⁵⁺ > Sn2+. In primary human mast cells, Ag+ and Au3+ caused dose-dependent toxic histamine release, whereas the other metal cations were ineffective over the dose range tested. To investigate the mechanism of metal cation-induced effects, we performed DNA as well as electron microscopic analyses on cultured fibroblasts. Both the DNA pattern and the ultrastructure of L-929 cells and gingival fibroblasts after exposure to cytopathogenic metal cations revealed signs of necrosis but no signs of apoptosis. Together, our data provide evidence that various metal cations produce dose-dependent cytopathogenic effects in distinct cell types, including human gingival fibroblasts and human tissue mast cells. Further studies are required to assess whether these effects play a role in adverse reactions to dental alloys which release metal cations in vivo.

Key Words: metal cations • dental alloys • fibroblasts • mast cells • apoptosis

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Journal of Dental Research, Vol. 74, No. 8, 1513-1520 (1995)
DOI: 10.1177/00220345950740081301


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This Article Abstract Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Schedle, A. Articles by Valent, P. Search for Related Content PubMed PubMed Citation Articles by Schedle, A. Articles by Valent, P. Pubmed/NCBI databases Compound via MeSH Substance via MeSH Hazardous Substances DB CHROMIUM COMPOUNDS CHROMIUM, ELEMENTAL COBALT COPPER, ELEMENTAL GALLIUM GOLD INDIUM MOLYBDENUM NICKEL, ELEMENTAL PALLADIUM PLATINUM PLATINUM COMPOUNDS SILVER COMPOUNDS SILVER, ELEMENTAL TIN TIN COMPOUNDS ZINC COMPOUNDS ZINC, ELEMENTAL Social Bookmarking                         What's this?