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Jpn J Pharmacol. 1989 Jul;50(3):253-61.

Modulation of eicosanoid-induced contraction of mouse and rat blood vessels by gingerols.

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Department of Chemical Pharmacology, Faculty of Pharmaceutical Sciences, Toyama Medical and Pharmaceutical University, Japan.


The effects of the active principles of crude ginger (a traditional Sino-Japanese medicine), the gingerols, on the contractile responses to eicosanoids were compared using isolated mouse and rat blood vessels. Leukotrienes (LT) C4 and D4, a thromboxane (TX) A2 derivative (U-46619), prostaglandins (PG) F2 alpha, PGI2-Na, PGE2, the stable PGI2 derivative TRK-100, and PGD2 induced contraction in longitudinal segments of mouse mesenteric veins in that order of potency. Exogenous arachidonic acid and PGE1 did not cause contraction. The mesenteric veins also contracted in response to noradrenaline (NA) and phenylephrine (PhE), but not to clonidine. The gingerols alone relaxed the muscle transiently and then augmented the response to PGF2 alpha, PGE2, PGI2-Na, and TRK-100, but suppressed the response to PGD2, U-46619, LTC4, LTD4, NA and PhE. (+/-)-[6]-Gingerol also potentiated the PGF2 alpha-induced contraction in longitudinal segments of rat mesenteric vein and vena cava, but inhibited it in circular segments of rat aorta and longitudinal segments of mouse mesenteric arteries. These results showed that (+/-)-[6]- and (+/-)-[8]-gingerols potentiated the contraction induced by prostanoids (except PGD2) and inhibited that produced by PGD2, TXA2, and LT, suggesting the modulation of eicosanoids-induced responses by (+/-)-[6]- or (+/-)-[8]-gingerol.

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