alexa The novel peptide apelin lowers blood pressure via a nitric oxide-dependent mechanism.
Cardiology

Cardiology

Journal of Clinical & Experimental Cardiology

Author(s): Tatemoto K, Takayama K, Zou MX, Kumaki I, Zhang W,

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Abstract Apelin is an endogenous ligand of the human orphan receptor APJ. We detected apelin-like immunoreactivity in the adipocytes, gastric mucosa, and Kupffer cells in the liver. We also detected apelin-like immunoreactivity localized within the endothelia of small arteries in various organs. Further, it was found that mean arterial pressure after the administration of apelin-12, apelin-13, and apelin-36 at a dose of 10 nmol/kg in anaesthetized rats was reduced by 26+/-5, 11+/-4, and 5+/-4 mm Hg, respectively. In the presence of a nitric oxide (NO) synthase inhibitor, the effect of apelin-12 on blood pressure was abolished. Furthermore, the administration of apelin-12 (10 nmol/kg) in rats produced a transitory elevation of the plasma nitrite/nitrate concentration from a basal level of 21.4+/-1.6 to 27.0+/-1.5 microM. Thus, apelin may lower blood pressure via a nitric oxide-dependent mechanism.
This article was published in Regul Pept and referenced in Journal of Clinical & Experimental Cardiology

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