Determination of ellagic acid compounds in Euscaphis japonica by using UPLC

School of Pharmacy, Guiyang Medical College, Guiyang 550004, China.
Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica 12/2009; 34(24):3235-8.
Source: PubMed


To develop an ultra performance liquid chromatography (UPLC) method for simultaneous determination of five ellagic acids in Euscaphis japonica.
Analysis was carried out on an Acquity BEH C18 (2.1 mm x 100 mm, 1.7 microm) column at 40 degrees C eluted with acetonitrile-0.1% phosphoric acid aqueous solution as mobile phases in gradient elution. The flow rate was 0.2 mL x min(-1), and the detection wavelength set was monitored at 245 nm.
All calibration curves showed good linear relationship within test ranges (r >0.9997), and the overall recoveries were in the range of 97.2%-102.1%, with RSD less than 3.2% (n = 6). The overall RSD of precision test were less than 2.9%.
The developed method was simple, rapid, accurate and reproducible, and can be used for the quality control of E. japonica.

3 Reads
  • [Show abstract] [Hide abstract]
    ABSTRACT: In the rat, intravenous injection of large doses (30 mg/Kg) of ellagic acid (EA) induced a decrease in the plasma level of fibrinogen and in the blood platelet content and an increase of the activated partial thromboplastin time. The long-lasting thrombocytopenia was inhibited by heparin (4 mg/Kg), defibrase (20 U/Kg), clocoumarol (4 mg/Kg) and CCI 17810 (120 mg/Kg). It was not inhibited by aspirin (90 mg/Kg), indomethacin (8 mg/Kg), ketoprofen (4-10 mg/Kg), epsilon-aminocaproic acid (150 mg/Kg), methysergide (4 mg/Kg), chlorpromazine (10 mg/Kg) and promethazine (4 mg/Kg). On the contrary, the small doses of indomethacin (4 mg/Kg) and of ketoprofen (0.5-2 mg/Kg) increased the thrombopenic effect of EA. EA induced the accumulation of Cr51-labelled platelets into the lungs and the liver, accompanied by a 64% fall in Cr51 blood radioactivity. The platelet stimulating effect of EA would depend on an intravascular coagulation which occurs in the whole cardiovascular system. It is suggested that the pro-aggregating derivatives of arachidonic acid had a minor role in this stimulation. The intravascular coagulation induced by EA was accompanied by a swelling of the lymph nodes and of the spleen. In immune platelet depleted rats, EA induced only the swelling of lymph nodes.
    Thrombosis Research 02/1987; 45(2):153-63. DOI:10.1016/0049-3848(87)90169-1 · 2.45 Impact Factor