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  • Title: The effect of the volatile oil from ginger rhizomes (Zingiber officinale), its fractions and isolated compounds on the 5-HT3 receptor complex and the serotoninergic system of the rat ileum.
    Author: Riyazi A, Hensel A, Bauer K, Geissler N, Schaaf S, Verspohl EJ.
    Journal: Planta Med; 2007 Apr; 73(4):355-62. PubMed ID: 17511060.
    Abstract:
    A contribution of the volatile oil from ginger rhizomes (Zingiber officinale Roscoe) on inhabiting the 5-HT3 receptor complex had been shown. In the present study a possible interaction of some compounds of the volatile oil with the 5-HT3 receptor system expressed in N1E-115 cells and with the serotoninergic system of the rat ileum was investigated. The volatile oil was obtained by steam distillation and fractionated using a silica gel column resulting in five fractions. Compounds of the fractions were identified by GC-MS. The influence of the volatile oil, its fractions and pure components on serotonin-induced [14C]guanidinium influx into N1E-115 cells was measured indicating the inhibitory interaction with the 5-HT3 receptor channel system. Most potent inhibitors of cation influx were the volatile oil, fraction 4, beta-pinene, terpinolene, alpha-copaene and alpha-phellandrene. The volatile oil and fractions 1 and 4 were not able to significantly influence either serotonin (10 microM)-induced maximum contraction of the rat ileum or the second phase of the biphasic contraction 2.5 min after serotonin addition. However, beta-pinene, terpinolene and alpha-phellandrene reduced both contractions. In conclusion, the volatile oil and distinct compounds such as terpinolene, beta-pinene and alpha-phellandrene interact with 5-HT3 receptor channel system and possess an antispasmodic effect at the rat ileum.
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