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  • Title: Systemic circulatory effects of pentagastrin.
    Author: Pawlik WW, Gustaw P, Czarnobilski K, Konturek SJ.
    Journal: Acta Physiol Pol; 1987; 38(5):418-24. PubMed ID: 3452974.
    Abstract:
    Effects of pentagastrin on systemic circulation were studied in anesthetized cats. Systemic arterial, central venous and portal pressure were monitored with electromanometers and blood flow through the superior mesenteric artery, common carotid artery, femoral artery and ascending aorta were measured with an electromagnetic blood flow meter. Pentagastrin injected intravenously at a doses of 2.0, 4.0 and 8.0 micrograms/kg induced a dose-dependent fall in arterial pressure, heart rate and cardiac output, increased mesenteric blood flow, decreased common carotid artery blood flow, did not change femoral artery blood flow and slightly rose central venous pressure. Atropine blocked observed effects. After repeated injections of the peptide, tachyphylaxis quickly developed. The obtained results indicate that pentagastrin influences general hemodynamics probably via interaction with cholinergic receptors.
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