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Physiological agonism and antagonism is the mechanism of substances to induce the same ultimate effects in the body as other substances, as if they were receptor agonists or antagonists, but without binding to the same receptor.
- Adrenaline induces platelet aggregation and so does hepatocyte growth factor (HGF). Thus, they are physiological agonists to each other.
- There are several physiological antagonists that have antihistaminergic action. For instance, adrenaline raises arterial pressure through vasoconstriction mediated by β-adrenergic receptor activation, in contrast to the histamine effect of lowering arterial pressure. However, only such substances that bind and block the histamine receptor are true antihistamines.
- ↑ doi:10.1016/j.febslet.2005.06.072 Met identification on human platelets: Role of hepatocyte growth factor in the modulation of platelet activation Copyright © 2005 Published by Elsevier B.V. Edited by Veli-Pekka Lehto. Daniela Pietrapiana, Marilena Sala, Maria Prat1 and Fabiola Sinigaglia, 1, Department of Medical Science, University “A. Avogadro”, Via Solaroli, 17, Novara 28100, Italy Received 4 May 2005; revised 15 June 2005; accepted 21 June 2005. Available online 19 July 2005.
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