ZHANG Yanlei,CUI Longtao,WANG Qiyao,et al.Mechanism of Zhizi Prescription in Protection of CCl4-induced Acute and Subacute Liver Injury in Mice[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(18):30-37.
ZHANG Yanlei,CUI Longtao,WANG Qiyao,et al.Mechanism of Zhizi Prescription in Protection of CCl4-induced Acute and Subacute Liver Injury in Mice[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(18):30-37. DOI: 10.13422/j.cnki.syfjx.20221206.
Mechanism of Zhizi Prescription in Protection of CCl4-induced Acute and Subacute Liver Injury in Mice
To investigate the protective effect of Zhizi prescription (ZZP) on carbon tetrachloride (CCl
4
)-induced acute and subacute liver injury and its mechanism.
Method
2
Acute and subacute liver injury animal models were induced. C57 mice were randomly divided into a normal group, model group, obeccholic acid group, ZZP high-dose (0.5 g·kg
-1
) group, and ZZP low-dose (0.25 g·kg
-1
) group. According to the experiment design, the serum and liver tissue of mice were collected after the last administration. Hematoxylin-eosin (HE) and Sirius staining was used to observe the liver pathological changes. Serum alanine aminotransferase (ALT), aspartate aminotransferase (AST), total bilirubin (TBIL), liver homogenate hydroxyproline (Hyp), malondialdehyde (MDA), and superoxide dismutase (SOD) levels were determined by kit. The levels of tumor necrosis factor-
α
(TNF-
α
) and interleukin-6 (IL-6) in the liver tissue were determined by enzyme-linked immunosorbent assay (ELISA). Real-time fluorescence quantitative polymerase chain reaction (Real-time PCR) was used to detect the mRNA expressions of collagen 1A1 (Col1a1), collagen 3A1 (Col3a1), fibronectin (FN), transforming growth factor
β
receptor Ⅱ (Tgfbr2) and
α
-smooth muscle actin (
α
-SMA) in the liver tissue.
Result
2
In terms of the acute liver injury, as compared with the normal group, the levels of ALT, AST, TBIL and MDA in the model group were significantly increased (
P
<
0.01), while the activity of liver SOD was significantly decreased (
P
<
0.01). Compared with model group, the ZZP high-dose and low-dose groups both significantly reduced the degree of liver cell injury, and protected the acute liver injury induced by CCl
4
. The ZZP high-dose group had a better effect than the ZZP low-dose group. In terms of the subacute liver injury, the levels of ALT, AST, MDA,TNF-
α
and IL-6 in the model group were significantly increased (
P
<
0.01), while the activity of liver SOD was significantly decreased (
P
<
0.01). As compared with the model group, liver Hyp content in the ZZP high-dose and low-dose groups was significantly decreased (
P
<
0.01), and the collagen deposition in liver of both groups was significantly reduced. The ZZP high-dose group also significantly down-regulated the mRNA expressions of
α
-SMA, Col1a1, Col3a1, FN, and Tgfbr2 in the liver of mice (
P
<
0.05,
P
<
0.01).
Conclusion
2
ZZP effectively protects the acute and subacute liver injury induced by CCl
4
, and the protective effect is proportional to its concentration. The mechanism may be related to the increase of the activity of antioxidant enzymes in the liver tissue, the decrease of the level of lipid peroxidation, and the inhibition of inflammatory response, thus reducing collagen deposition and improving early liver fibrosis.
关键词
Keywords
references
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