Vanillin Induces Relaxation in Rat Mesenteric Resistance Arteries by Inhibiting Extracellular Ca[sup.2+] Influx

Vanillin is a phenolic aldehyde, which is found in plant species of the Vanilla genus. Although recent studies have suggested that vanillin has various beneficial properties, the effect of vanillin on blood vessels has not been studied well. In the present study, we investigated whether vanillin has...

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Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2022-12, Vol.28 (1)
Main Authors: Choi, Sooyeon, Haam, Chae Eun, Oh, Eun-Yi, Byeon, Seonhee, Choi, Soo-Kyoung, Lee, Young-Ho
Format: Article
Language:English
Subjects:
Dosage and administration
Drug therapy
Hypertension
Patient outcomes
Vanillin
Vasodilators
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Summary:Vanillin is a phenolic aldehyde, which is found in plant species of the Vanilla genus. Although recent studies have suggested that vanillin has various beneficial properties, the effect of vanillin on blood vessels has not been studied well. In the present study, we investigated whether vanillin has vascular effects in rat mesenteric resistance arteries. To examine the vascular effect of vanillin, we measured the isometric tension of arteries using a multi-wire myograph system. After the arteries were pre-contracted with high K[sup.+] (70 mM) or phenylephrine (5 µM), vanillin was administered. Vanillin induced concentration-dependent vasodilation. Endothelial denudation or treatment of eNOS inhibitor (L-NNA, 300 μM) did not affect the vasodilation induced by vanillin. Treatment of K[sup.+] channel inhibitor (TEA, 10 mM) or sGC inhibitor (ODQ, 10 μM) or COX-2 inhibitor (indomethacin, 10 μM) did not affect the vanillin-induced vasodilation either. The treatment of vanillin decreased the contractile responses induced by Ca[sup.2+] addition. Furthermore, vanillin significantly reduced vascular contraction induced by BAY K 8644 (30 nM). Vanillin induced concentration-dependent vascular relaxation in rat mesenteric resistance arteries, which was endothelium-independent. Inhibition of extracellular Ca[sup.2+] influx was involved in vanillin-induced vasodilation. Treatment of vanillin reduced phopsho-MLC[sub.20] in vascular smooth muscle cells. These results suggest the possibility of vanillin as a potent vasodilatory molecule.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules28010288