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承德医学院,河北省中药研究与开发重点实验室,河北 承德 067000
江慧,在读硕士,从事中药制剂现代化研究,E-mail:jianghui0469@163.com
刘翠哲,博士,研究员,从事中药制剂现代化研究,Tel:0314-2291142,E-mail:liucuizhexy@163.com; *
常金花,硕士,副教授,从事中药制剂现代化研究,E-mail:xiaoniqiu@126.com
收稿日期:2021-04-29,
网络出版日期:2021-07-27,
纸质出版日期:2022-03-05
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江慧,刘翠哲,常金花.急性肝损伤对黄芩苷镁在大鼠体内药代动力学和组织分布的影响[J].中国实验方剂学杂志,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.
江慧,刘翠哲,常金花.急性肝损伤对黄芩苷镁在大鼠体内药代动力学和组织分布的影响[J].中国实验方剂学杂志,2022,28(05):116-123. DOI: 10.13422/j.cnki.syfjx.20211847.
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.
目的
2
建立一种可同时测定大鼠血浆和组织中黄芩苷镁和黄芩素的高效液相色谱法(HPLC);考察急性肝损伤对黄芩苷镁在大鼠体内药动学和组织分布特征的影响。
方法
2
采用四氯化碳(CCl
4
)诱导大鼠急性肝损伤模型;正常大鼠和急性肝损伤模型大鼠灌胃给予等剂量(287.31 mg·kg
-1
)黄芩苷镁水溶液后,在不同时间点眼眶取血,采用HPLC同时测定各时间点大鼠血浆中黄芩苷镁和黄芩素的药物浓度,绘制药-时曲线,利用DAS 3.0软件计算药动学参数,应用SPSS 23.0进行统计学分析;灌胃给予黄芩苷镁水溶液后,运用HPLC同时测定黄芩苷镁和黄芩素在不同时间点收集的大鼠肝、肺、肾、胃、脑、小肠中的含量,流动相0.1%磷酸水溶液-甲醇,检测波长278 nm。
结果
2
黄芩苷镁在急性肝损伤模型组大鼠的药峰浓度(
C
max
)是正常组的0.58倍,药时曲线下面积(AUC
0-
t
)是正常组的0.5倍(
P
<
0.05),表观分布容积(
V
d
)是正常组的2.3倍(
P
<
0.05),血浆中几乎检测不到黄芩素。黄芩苷镁在急性肝损伤模型组大鼠的肝、胃、脑中各时间点的质量分数均高于正常组,而在肺8 h,肾8,12 h,小肠0.333 h样品中黄芩苷镁的质量分数低于正常组;黄芩素在模型组大鼠的肺、胃、小肠中各时间点的质量分数均高于正常组,而在肝6,8 h,肾0.333,4,6 h组织样品中黄芩素的质量分数低于正常组,在脑中几乎检测不到黄芩素。
结论
2
大鼠灌胃等剂量的黄芩苷镁水溶液后,CCl
4
诱导的急性肝损伤可以影响黄芩苷镁在大鼠体内的药动学行为和组织分布特征,而且黄芩苷镁和黄芩素在肝、肺、肾、胃、小肠组织中存在生物转化。
Objective
2
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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