Planta Med 2007; 73(4): 355-362
DOI: 10.1055/s-2007-967171
Original Paper
Pharmacology
© Georg Thieme Verlag KG Stuttgart · New York

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

A. Riyazi1 , A. Hensel2 , K. Bauer1 , N. Geißler1 , S. Schaaf1 , E. J. Verspohl1
  • 1Department of Pharmacology, Institute of Pharmaceutical and Medicinal Chemistry, University of Muenster, Germany
  • 2Institute of Pharmaceutical Biology and Phytochemistry, University of Muenster, Germany
Further Information

Publication History

Received: August 11, 2006 Revised: November 7, 2006

Accepted: February 21, 2007

Publication Date:
04 April 2007 (online)

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Abstract

A contribution of the volatile oil from ginger rhizomes (Zingiber officinale Roscoe) on inhibiting 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 [14 C]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, β-pinene, terpinolene, α-copaene and α-phellandrene. The volatile oil and fractions 1 and 4 were not able to significantly influence either serotonin (10 μM)-induced maximum contraction of the rat ileum or the second phase of the biphasic contraction 2.5 min after serotonin addition. However, β-pinene, terpinolene and α-phellandrene reduced both contractions. In conclusion, the volatile oil and distinct compounds such as terpinolene, β-pinene and α-phellandrene interact with 5-HT3 receptor channel system and possess an antispasmodic effect at the rat ileum.

Abbreviations

GC:gas chromatography

MS:mass spectrometry

LRI:linear retention index

NIST:National Institute for Safety and Technology, USA

cpm:counts per minute

5-HT:5-hydroxytryptamine, serotonin

2-Me-5-HT:2-Methyl-5-hydroxytryptamine, 5-HT3 receptor agonist

References

Dr. E. J. Verspohl

Department of Pharmacology

Institute of Pharmaceutical and Medicinal Chemistry

Hittorfstr. 58-62

48149 Münster

Germany

Email: verspoh@uni-muenster.de