Effetto promoter indotto da HgCl2 attraverso lo studio della comunicazione intercellulare

Translated title of the contribution: Promoter effect induced by HgCl2 by studying the intercellular communication

M. Lasalvia, R. Zefferino, C. Piccoli, D. Boffoli, N. Capitanio, L. Ambrosi, N. L'abbate

Research output: Contribution to journalArticlepeer-review


This work aims at assessing at molecular level the effect caused by the HgCl2 intercellular communication inhibition at non-cytotoxic doses. On the basis of our previous experiences, we exposed the human keratinocytes (HUKE) at 10 nM of HgCl2 for 24 hours Next, we estimated: a) the protein expression of connexines Cx43, Cx32 and Cx26 by western blotting; b) the amount of mRNA corresponding to the three connexines by semi-quantitative RT-PCR; and c) the production of reactive oxygen species in HgCl2 treated cells using a specific probe, i.e. DCF in confocal microscopy. Our study demonstrated a higher expression of the transcripts for Cx26, Cx32, Cx43, and a higher amount of proteins Cx43, Cx32 and Cx26, compared to the negative controls. Furthermore, we studied the effect of HgCl2 on the ROS production in keratinocytes, by the analysis in confocal microscopy carried out with the DCF, fit for marking the oxygen free radicals. In HgCl2 treated keratinocytes we obtained an increase of the ROS production compared to controls; and further the mitochondrions resulted the place of ROS production. The results of this study suggest that non-cytotoxic HgCl2 concentrations, might cause an unbalancing of the redox cellular state (ROS increased level), and we can assume that the activation of a redox signalling involves the inactivation of gap junctions.

Translated title of the contributionPromoter effect induced by HgCl2 by studying the intercellular communication
Original languageItalian
Pages (from-to)542-544
Number of pages3
JournalGiornale Italiano di Medicina del Lavoro ed Ergonomia
Issue number3
Publication statusPublished - Jul 2007

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health
  • Rehabilitation


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