We studied the effect of dopamine in concentrations of 10-9, 10-8, 10-7, 10-6, and 10-5 M on contraction strength of isolated myocardial strips from the right atrium and right ventricle of rats aging 21, 42, 56, and 100 days. Dopamine in a concentration of 10-9 M had a positive inotropic effect in rats of various ages. Increasing the concentration of dopamine to 10-7-10-5 M was accompanied by a negative inotropic effect on the heart.
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Translated from Byulleten’ Eksperimental’noi Biologii i Meditsiny, Vol. 156, No. 8, pp. 136-139, August, 2013
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Bilalova, G.A., Kazanchikova, L.M., Zefirov, T.L. et al. Inotropic Effect of Dopamine on Rat Heart during Postnatal Ontogeny. Bull Exp Biol Med 156, 173–176 (2013). https://doi.org/10.1007/s10517-013-2303-1
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DOI: https://doi.org/10.1007/s10517-013-2303-1