Summary
Dimethindene (DMI) decreased the maximum rate of rise of action potential (AP) without changing the resting potential in cat ventricular myocardium. DMI abolished the histamine-induced slow APs in left atria but not in right ventricular papillary muscles of guinea-pig, suggesting that DMI blocked the histamine H1-receptors.
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Mészáros, J., Hlavacsek-Póka, E. & Szegi, J. Effect of dimethindene, an antihistaminic drug, on the transmembrane potentials of mammalian myocardium. Experientia 39, 400–402 (1983). https://doi.org/10.1007/BF01963146
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DOI: https://doi.org/10.1007/BF01963146