Abstract
MANY drugs which, affect the nervous system seem to be capable of altering the physical properties of cell membranes1. The concept of membrane stabilizing drugs has evolved since Spirtes and Guth2 observed an inhibition of mitochondrial swelling in the presence of chlorpromazine. Recently, a wide range of local anaesthetics and central nervous system depressants have been shown to stabilize the red cell membrane3. If concurrent membrane changes in nerve cells occurred and produced a decreased ionic permeability of axons or an inhibition of transmitter release, this would result in a depression of neuronal activity. It is unlikely, however, that drugs which act on membranes have a similar action on all cells, and in some cases specific organelles may be selectively involved. For example, Tanaka and Tizuka4 showed that some anti-inflammatory drugs decrease the permeability of the lysosomal membrane to acid hydrolases. Also, even though barbiturates decrease the excitability of pre and postsynaptic neurenal membrane, with low concentrations of the drug, the predominant effect appears to be an inhibition of release of neurotransmitter5.
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References
Weatherall, M., Recent Advances in Pharmacology, fourth ed. (edit. by Robson, J. M., and Stacey, R. S.), 1 (Churchill, London, 1968).
Spirtes, M. A., and Guth, P. S., Biochem. Pharmacol., 12, 37 (1963).
Seeman, P., and Weinstein, J., Biochem. Pharmacol., 15, 1737 (1966).
Tanaka, K., and Tizuka, Y., Biochem. Pharmacol., 17, 2023 (1968).
Curtis, D. R., Brit. Med. Bull., 21, 5 (1965).
Von Euler, U. S., and Lishajko, F., Biochimica Applicata, 14, 17 (1968).
Shepherd, H., Tsien, W. H., and Burghardt, C., Biochem. Pharmacol., 18, 2215 (1969).
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MIKIKITS, W., MORTARA, A. & SPECTOR, R. Effect of Drugs on Red Cell Fragility. Nature 225, 1150–1151 (1970). https://doi.org/10.1038/2251150a0
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DOI: https://doi.org/10.1038/2251150a0
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