JIANG Hui,LIU Cui-zhe,CHANG Jin-hua.Effect of Acute Liver Injury on Pharmacokinetics and Tissue Distribution of Baicalin Magnesium in Rats[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(05):116-123.
JIANG Hui,LIU Cui-zhe,CHANG Jin-hua.Effect of Acute Liver Injury on Pharmacokinetics and Tissue Distribution of Baicalin Magnesium in Rats[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(05):116-123. DOI: 10.13422/j.cnki.syfjx.20211847.
Effect of Acute Liver Injury on Pharmacokinetics and Tissue Distribution of Baicalin Magnesium in Rats
To establish a high performance liquid chromatography (HPLC) for simultaneous determination of baicalin magnesium and baicalein in rat plasma and tissues, and to investigate the effect of acute liver injury on pharmacokinetics and tissue distribution of baicalin magnesium in rats.
Method
2
Acute liver injury rat model was induced by carbon tetrachloride (CCl
4
). Normal rats and acute liver injury model rats were given an equal dose (287.31 mg·kg
-1
) of baicalin magnesium aqueous solution by intragastric administration, the orbital blood was collected at different time points, and HPLC was used to simultaneously determine the concentrations of baicalin magnesium and baicalein in rat plasma at each time point, the concentration-time curves were drawn, the pharmacokinetic parameters were calculated with DAS 3.0, and SPSS 23.0 was used for statistical analysis. After oral administration of baicalin magnesium aqueous solution, HPLC was used to simultaneously determine the contents of baicalin magnesium and baicalein in rat liver, lung, kidney, stomach, brain and small intestine at different time points, the mobile phase was 0.1% phosphoric acid aqueous solution-methanol, and the detection wavelength was 278 nm.
Result
2
In the acute liver injury model group, the peak concentration (
C
max
) of baicalin magnesium was 0.58 times that of the normal group, the area under concentration-time curve (AUC
0-
t
) was 0.5 times that of the normal group (
P
<
0.05), the apparent volume of distribution (
V
d
) was 2.3 times that of the normal group (
P
<
0.05), and baicalein is almost undetectable in plasma. The content of baicalin magnesium in liver, stomach and brain of the acute liver injury model group was higher than that of the normal group at each time point, while the content of baicalin magnesium in the samples of lung at 8 h, kidney at 8 h and 12 h, and small intestine at 0.333 h was lower than that of the normal group. The content of baicalein in lung, stomach and small intestine of the model group was higher than that of the normal group at each time point, while the content of baicalein in the tissue samples of liver at 6, 8 h and kidney at 0.333, 4, 6 h was lower than that in the normal group, and baicalein could hardly be detected in the brain.
Conclusion
2
After intragastric administration of the same dose of baicalin magnesium aqueous solution, acute liver injury induced by CCl
4
can affect the pharmacokinetics and tissue distribution characteristics of baicalin magnesium in rats, and there is biotransformation of baicalin magnesium and baicalein in liver, lung, kidney, stomach and small intestine.
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