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A simple, rapid and sensitive liquid chromatography tandem mass spectrometry method is presented for the simultaneous determination of oleanolic acid, p-coumaric acid, ferulic acid, kaemperol and quercetin in rat plasma. Glycyrrhetinic acid was used as an internal standard, and sample pretreatment consisted of a liquid-liquid extraction. Chromatographic(More)
Many publications have reported the growing application of complementary and alternative medicine, particularly the use of Chinese herbal medicine (CHM) in combination with routine pharmacotherapy (RP) for senile vascular dementia (SVD), but its efficacy remains largely unexplored. The purpose of this study is to evaluate the efficacy of CHM adjunctive(More)
AIM OF THE STUDY Ferulic acid (FA), a compound isolated from herbs, has a big potential to be developed into a useful drug for the treatment of cardiovascular disease. Early estimation of potential drug interaction is critical for drug development. As a common Chinese herb and Western drug respectively, Honghua and clopidogrel are often combined with(More)
A novel, simple, and sensitive method for the determination of jujuboside A in rat plasma using liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) was developed. Following solid-phase extraction, measurement of jujuboside A was performed by negative ion electrospray ionization (ESI) in multiple reaction monitoring (MRM) mode. The limit of(More)
ETHNOPHARMACOLOGICAL RELEVANCE Geniposidic acid (GPA) is the main constituent of Gardenia jasminoides Ellis (Rubiaceae), which has long been used to treat inflammation, jaundice and hepatic disorders. The cholagogic effect of Gardenia jasminoides Ellis (Rubiaceae) and GPA have been widely reported, but the underlying occurrence mechanism remains unclear. (More)
OBJECTIVE To observe the effect of borneol on level of HA and 5-HT in rat's hypothalamus. METHODS The levels of HA and 5-HT in rat's hypothalamus were determined before and after p.o. with different amount of borneol by high performance liquid chromatography with electrochemical detection (HPLC-ECD), and the borneol's effect on the levels of HA and 5-HT(More)
The aim of this work was to study the pharmacokinetics of piperaquine in healthy volunteers. Healthy volunteers received piperaquine and tablets of Artekin by oral administration. The plasma samples were analyzed for piperaquine by liquid-liquid extraction and determined by HPLC-UV. The results demonstrated that the plasma drug concentration-time curves of(More)
A high performance liquid chromatographic method was developed for the simultaneous determination of eight derivatives of propranolol. Cassette dosing method was used in the epithelium side of cornea in vitro to get the effect of penetrant, and the perfusate was collected in the side of endothelium. The protein in the sample was precipitated and discarded(More)
BACKGROUND Medical research using human participants must conform to the basic ethical principles found in the Declaration of Helsinki (DoH) of the World Medical Association. OBJECTIVE The purpose of this review was to assess whether journals in China have improved in regard to the fulfillment of ethical disclosure procedures for clinical trials of(More)
A method was established for evaluating cytochrome P450 3A4 (CYP3A4) activity using testosterone in vitro by high performance liquid chromatography-ultraviolet detection (HPLC-UV). It employed a Phenomenex C18 column (4.6 mm x 150 mm, 5 microm) at 30 degrees C. The mobile phase consisted of (A) methanol-acetonitrile-0.05% phosphate solution (pH 2.45)(More)