Wei-yi JIA, Jia-jia LIU, Rui HU, et al. Therapeutic Mechanism of Xiaochaihu Granule on Acute Liver Injury Induced by Thioacetamide in Rats Through Nrf2 Pathway[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(8): 54-59.
DOI:
Wei-yi JIA, Jia-jia LIU, Rui HU, et al. Therapeutic Mechanism of Xiaochaihu Granule on Acute Liver Injury Induced by Thioacetamide in Rats Through Nrf2 Pathway[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(8): 54-59. DOI: 10.13422/j.cnki.syfjx.20190840.
Therapeutic Mechanism of Xiaochaihu Granule on Acute Liver Injury Induced by Thioacetamide in Rats Through Nrf2 Pathway
To observe the therapeutic effect of Xiaochaihu granule on acute liver injury (ALI) induced by thioacetamide (TAA) in rats
and to explore the role of transcription factor (NF)-E2 related factor 2 (Nrf2) in the pathway of oxidative damage.
Method:
2
SD rats were randomly divided into control group
model group
Xiaochaihu granule low
middle and high dose groups (1
2
4 g·kg
-1
). 250 mg·kg
-1
TAA was given to the rats by
ip
. administration for 2 days to prepare the liver injury model
and from the 3
rd
day
same amount of double distilled water or different doses of Xiaochaihu granule was given to corresponding groups by
ig
. administration for 2 weeks. 24 hours after the last administration
liver tissues were taken and stained with hematoxylin-eosin(HE) staining. The activities of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) in serum were measured by colorimetry. The activities of total superoxide dismutase (T-SOD) and malondialdehyde (MDA) in liver tissues were measured by colorimetry. Real-time PCR was used to detect Nrf2 pathway related mRNA expression.
Result:
2
As compared with control group
ALT
AST and MDA in model group were significantly increased
while T-SOD was significantly decreased (
P
<
0.05
P
<
0.01)
and pathological features showed large inflammatory infiltration
both mRNA and protein expression levels of Nrf2
Kelch-like ECH-associated protein 1(Keap1)
quinone oxidoreductase(NQO1)
heme oxygenase-1(HO-1)
glutamate-cysteine ligase catalytic subunit(GCLC) and glutamate-cysteine ligase modifier subunit(GCLM) were decreased to different degrees (
P
<
0.01). As compared with model group
ALT
AST
MDA levels in Xiaochaihu granule treatment groups were decreased
while T-SOD was increased significantly (
P
<
0.05
P
<
0.01). Pathological results showed that the range and severity of liver lesions in rats were improved to varying degrees after treatment
both mRNA and protein expression levels of Nrf2
Keap1
NQO1
HO-1
GCLC and GCLM were increased to varying degrees (
P
<
0.05
P
<
0.01).
Conclusion:
2
Xiaochaihu granule may play a therapeutic role in TAA induced ALI in rats by up-regulating the expression of downstream molecules in Nrf2 signaling pathway.
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