PMID: 15374479Nov 1, 1990Paper

Effects of idebenone on mitogen-induced proliferation of human lymphocytes

Archives of Gerontology and Geriatrics
G Lustyik, J J O'Leary

Abstract

In vitro effect of idebenone on human lymphocytes isolated from old and young donors was determined. The effects of drug were the same with the old and young donors cells. At concentrations of 2 microg/ml (6 microM) or less in the culture medium, idebenone showed no effect on phytohemagglutinin (PHA)-induced proliferation and protein synthesis, or on cell viability measured by Trypan Blue exclusion. Concentrations of 25 and 50 microg/ml showed dose-dependent suppression of the proliferation and protein synthesis which was associated with significant cytotoxicity. At concentrations of 8-10 microg/ml the compound appears to have just detectable effect on lymphocyte viability or ability to respond to PHA stimulation. It seems clear that such in vivo concentrations which would be associated with lymphopenia and immunologic suppression are not achieved with therapeutic doses of idebenone. The pattern of protein bands observed on fluorograms of sodium dodecyl sulfate-polyacrylamide gels of cells incubated with [(3)H]leucine and [(35)S]methionine was similar in control and idebenone-treated samples, consistent with a slight, nonspecific inhibitory effect on protein synthesis in cultures with higher doses of the compound. At these conc...Continue Reading

References

May 1, 1978·Clinical Immunology and Immunopathology·H M HallgrenE J Yunis
May 1, 1989·Archives of Gerontology and Geriatrics·Y NagaiA Nagaoka
Nov 30, 1988·Mechanisms of Ageing and Development·J J O'LearyH M Hallgren
Feb 1, 1986·Mechanisms of Ageing and Development·T L JensenJ J O'Leary
May 31, 1985·Mechanisms of Ageing and Development·H M HallgrenJ J O'Leary
Jan 1, 1974·The Journal of Clinical Investigation·M E Weksler, T H Hütteroth
Feb 1, 1983·Mechanisms of Ageing and Development·J J O'LearyW G Yasmineh
Nov 1, 1990·Archives of Gerontology and Geriatrics·I Zs -Nagy

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