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2-Ethylpyrazine Induces Vasodilatation by Releasing Nitric Oxide in the Endothelium

2-Ethylpyrazine Induces Vasodilatation by Releasing Nitric Oxide in the Endothelium

Hiroshi Ashigai, Emiko Ikeshima, Kumiko Koizumi, Keiko Nakashima, Mai Mizutani, Hiroaki Yajima

Biol Pharm Bull. 2017 Dec 1;40(12):2153-2157.

PMID: 28966226

Abstract:

Oxygen transportation and regulation of some physiological processes are facilitated by blood flow. Furthermore, blood flow is regulated by various factors such as nitric oxide (NO) and the autonomic nerve system. In modern life, many people suffer from chilliness (hiesho) because of mental stress and an excessive use air-conditioning systems, which induces vasoconstriction in the peripheral skin. In this study, we focused on pyrazine derivatives, particularly compounds that are used as food flavoring materials, and investigated their effects on vascular function and blood flow. We examined the vasodilatory effect of pyrazine derivatives in the rat thoracic aorta and found 2-ethylpyrazine (2-EP) to be the most active pyrazine compound. Additionally, we found that 2-EP induces vasodilatation through the activities of endothelium-derived relaxing factors. 2-EP activates NO synthesis through the effect of endothelial NO synthase in the endothelium. As a result, cyclic GMP levels rise in smooth muscle cells and vasodilatation is induced. We also confirmed that 2-EP increases peripheral blood flow in rats. From these results, we concluded that 2-EP induces vasodilatation by inducing the release of NO and increasing peripheral blood flow.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP13925003	Ethylpyrazine		13925-00-3	Price

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