ZHAO Minghong,LU Tianming,LIU Li,et al.Mechanism of Glycyrrhizae Radix et Rhizoma Alleviating Tripterygium wilfordii Polyglycoside Tablets-induced Liver Injury[J].Chinese Journal of Experimental Traditional Medical Formulae,2023,29(05):24-31.
ZHAO Minghong,LU Tianming,LIU Li,et al.Mechanism of Glycyrrhizae Radix et Rhizoma Alleviating Tripterygium wilfordii Polyglycoside Tablets-induced Liver Injury[J].Chinese Journal of Experimental Traditional Medical Formulae,2023,29(05):24-31. DOI: 10.13422/j.cnki.syfjx.20222039.
Mechanism of Glycyrrhizae Radix et Rhizoma Alleviating Tripterygium wilfordii Polyglycoside Tablets-induced Liver Injury
To investigate the protective effect of cytochrome P4502D6 (CYP2D6) and cytochrome P4503A4 (CYP3A4), key enzymes of drug metabolism in liver, on acute liver injury in water extract of Glycyrrhizae Radix et Rhizoma (WEOGRR).
Method
2
Healthy male Kunming mice were divided into normal group, model group, WEOGRR low-, medium- and high-dose groups (5, 10, 15 g·kg
-1
·d
-1
) and positive drug group (diammonium glycyrrhizinate, 75 mg·kg
-1
·d
-1
), with 10 in each group. One week after preventive administration, acute liver injury model was induced by single intragastric administration of 270 mg·kg
-1
Tripterygium Glycosides tablets, and samples were collected after 18 h. The pathological changes of liver were observed by hematoxylin-eosin (HE) staining. Serum liver function indexes including alanine aminotransferase (ALT), aspartate aminotransferase (AST),
γ
-glutamyl transpeptadase (
γ
-GT), alkaline phosphatase (ALP), and total bilirubin (TBIL) as well as the levels of oxidative stress indexes including malondialdehyde (MDA) and superoxide dismutase (SOD) in hepatocytes were determined by biochemical method. Real-time polymerase chain reaction (Real-time PCR) and Western blot were performed to detect the mRNA and protein expression levels of CYP2D6 and CYP3A4, respectively.
Result
2
Compared with normal group, model group had significant hepatocyte swelling and inflammatory cell infiltration (
P
<
0.01), increased AST, ALT,
γ
-GT, ALP and TBIL (
P
<
0.05), elevated MDA and decreased SOD (
P
<
0.01) as well as down-regulated mRNA and protein expression levels of CYP2D6 and CYP3A4 (
P
<
0.05). Compared with the model group, the normal group had intact liver structure without obvious abnormality, and the WEOGRR groups and positive drug group presented alleviated hepatocyte swelling and inflammatory cell infiltration (
P
<
0.01), reduced AST, ALT,
γ
-GT, ALP and TBIL (
P
<
0.01), lowered MDA and increased SOD (
P
<
0.01) as well as up-regulated expression levels of CYP2D6 and CYP3A4 (
P
<
0.01).
Conclusion
2
The protective effect of WEOGRR on acute liver injury induced by Tripterygium glycosides tablets may be related to reducing the contents of AST, ALT,
γ
-GT, ALP and TBIL in serum, inhibiting MDA and increasing the activity of SOD in liver cells, and enhancing the activities of CYP2D6 and CYP3A4, thus accelerating the metabolism of toxic substances.
关键词
雷公藤多苷片肝损伤甘草细胞色素P450
Keywords
Tripterygium wilfordii polyglycoside tabletsliver injuryGlycyrrhizae Radix et Rhizomacytochrome P450
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