Growth inhibitory effects of dimethyl sulfoxide and dimethyl sulfone on vascular smooth muscle and endothelial cells in vitro - PubMed (original) (raw)

• PMID: 3597282
• DOI: 10.1007/BF02623858

Growth inhibitory effects of dimethyl sulfoxide and dimethyl sulfone on vascular smooth muscle and endothelial cells in vitro

D L Layman. In Vitro Cell Dev Biol. 1987 Jun.

Abstract

The growth of bovine aortic smooth muscle and endothelial cells was studied after exposure to dimethyl sulfoxide (DMSO) or its major metabolite, dimethyl sulfone (DMSO2). Both compounds caused a dose-dependent inhibition of cell growth as determined by [3H]thymidine incorporation and by counting the number of cells with time of exposure in culture. The IC50 of DMSO (concentration which produces 50% inhibition of growth) was 1% for smooth muscle cells and 2.9% for endothelial cells. Similarly, the IC50 of DMSO2 was also 1% for smooth muscle cells, but was 1.8% for endothelial cells. After a 4-d exposure to either compound, the growth inhibition of smooth muscle cells was completely reversible at 1%, partially reversible at 2 to 3% and completely irreversible at 4%. By comparison, inhibition of endothelial cell growth was completely reversible up to 4% of either compound. It is concluded that the growth of smooth muscle cells was similarly inhibited by DMSO and DMSO2, but that smooth muscle cells were more susceptible than endothelial cells to the growth inhibitory effects of these compounds. In addition, DMSO2 was a more potent inhibitor of cell growth than DMSO and its growth inhibition was less reversible than that produced by DMSO.

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