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Year : 2015  |  Volume : 11  |  Issue : 43  |  Page : 455-462

A study of pharmacokinetic interactions among co-existing ingredients in Viscum coloratum after intravenous administration of three different preparations to rats

Department of Pharmaceutical Analysis, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China

Correspondence Address:
Yunli Zhao
School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016
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Source of Support: upported by the National Natural Science Foundation of China (Grant No. 30901967) and Natural Science Foundation of Liaoning Province (Grant No. 2013020223), Conflict of Interest: None declared.

DOI: 10.4103/0973-1296.160448

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Background: Viscum coloratum (Komar) Nakai, known as Hujisheng in china, has been widely used as a herb medicine to treat a variety of diseases, including cardiovascular diseases, cancer, hypertension, hepatitis and hemorrhage. Objective: The aim was to investigate pharmacokinetic interactions among co existing ingredients in V. coloratum after intravenous administration of three different preparations (four monomer solutions, the mixture of them and Viscum coloratum extracts) to rats. Materials and Methods: After protein precipitation pretreatment with plasma samples, high performance liquid chromatographic methods were developed and applied to quantitatively determinate the four components [syringin (Syri), homoeriodictyol 7 O-β-D glycoside (Hedt III), homoeriodictyol 7 O-β-D apiose (1 → 2)-β-D glycoside (Hedt II) and homoeriodictyol 7 O-β-D apiosiyl (1 → 5)-β-D apiosyl (1 → 2)-β-D glycoside (Hedt I)].The pharmacokinetic parameters (Area under the curve [AUC (0-t)], AUC (0-∞), t1/2) were calculated using DAS 2.1 software (Chinese Pharmacological Society,Shanghai,China) and compared statistically by One way analysis of variance using SPSS software (18.0, Chicago, IL, USA) with P < 0.05 considered statistically significant. Results: Good linearities were achieved in the measured concentration range with R2 it0.9920. Precision, accuracy and extraction recovery were all within the acceptable range. For Syri, there was a significant difference only on t1/2 among three treatment groups. For Hedt I, Hedt II and Hedt III, three flavonoid glycosides, the change of AUC (0-t), AUC (0-∞) and t1/2 were markedly distinctive and even converse. Conclusion: Complex, extensive pharmacokinetic interactions were observed among these components in V. coloratum. They were mutually influenced by the in vivo absorption, distribution, metabolism and elimination. The result suggested traditional Chinese medicine was a complicated system, and we should take a scientific and dialectic view in the research and development processes.

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