Pharmacokinetic study of salvianolic acid A in rat after intravenous administration of Danshen injection.
In order to research the pharmacokinetics of salvianolic acid A (SalA), a herbal ingredient isolated from Salvia miltiorrhiza Bunge, after intravenous administration to rats, a specific and accurate high-performance liquid chromatography (HPLC) was developed. The assay procedure involved simple liquid-liquid extraction of SalA and internal standard (IS, ethyl-p-hydroxybenzoate) from plasma into ethyl acetate. The organic layer was separated and evaporated under reduced pressure at 40 degrees C. The residue was reconstituted in the mobile phase and analyzed on an Inertsil C8 column, monitored at 285 nm. The mobile phase, which consisted of methanol-acetonitrile-water-formic acid (10:20:70:0.4, by vol), was used at a flow rate of 1.0 mL/min. The ratio of the peak area of the analyte to IS was applied to quantify the plasma samples. The standard curve for SalA was linear (r2 = 0.9999) in the concentration range of 0.75-150 microg/mL. The limit of quantitation (LOQ) of SalA was 0.75 microg/mL. The intra- and inter-day precisions (RSD) of the quality control (QC) samples were in the ranges of 2.17-3.29 and 1.24-5.28%, respectively. Accuracy in the measurement of QC samples ranged from 94.7 to 101.1%. This method was validated for specificity, accuracy and precision and was successfully applied to the pharmacokinetic study of SalA in rat plasma after intravenous administration of Danshen injection.
Hou
Yuan-Yuan
YY
West China School of Pharmacy, Sichuan University, Chengdu 610041, People's Republic of China.
Peng
Jia-Min
JM
Chao
Ruo-Bing
RB
D000818:Animals; D019540:Area Under Curve; D002109:Caffeic Acids / Q000097:blood* / Q000493:pharmacokinetics*; D002138:Calibration; D002851:Chromatography, High Pressure Liquid; D004365:Drugs, Chinese Herbal / Q000008:administration & dosage* / Q000737:chemistry; D007275:Injections, Intravenous; D007773:Lactates / Q000097:blood* / Q000493:pharmacokinetics*; D008297:Male; D015394:Molecular Structure; D010618:Phenanthrolines / Q000008:administration & dosage* / Q000737:chemistry; D051381:Rats; D017207:Rats, Sprague-Dawley; D015203:Reproducibility of Results; D027561:Salvia miltiorrhiza / Q000737:chemistry*; D012680:Sensitivity and Specificity; D013056:Spectrophotometry, Ultraviolet
D002109:Caffeic Acids; D004365:Drugs, Chinese Herbal; D007773:Lactates; D010618:Phenanthrolines; C028972:dan-shen root extract; C066201:salvianolic acid A