ZHANG Mengting,HUANG Ting,LIU Xinyan,et al.Effect of Shuxie Decoction (疏泄方) on Hepatic Lipid Accumulation and Bmal1 Clock Gene Expression Circadian Rhythm Disorders Model Mice[J].Journal of Traditional Chinese Medicine,2025,66(18):1934-1943.
ZHANG Mengting,HUANG Ting,LIU Xinyan,et al.Effect of Shuxie Decoction (疏泄方) on Hepatic Lipid Accumulation and Bmal1 Clock Gene Expression Circadian Rhythm Disorders Model Mice[J].Journal of Traditional Chinese Medicine,2025,66(18):1934-1943.DOI: 10.13288/j.11-2166/r.2025.18.013.
Effect of Shuxie Decoction (疏泄方) on Hepatic Lipid Accumulation and Bmal1 Clock Gene Expression Circadian Rhythm Disorders Model Mice
(疏泄方) in alleviating hepatic lipid accumulation caused by circadian rhythm disorders (CRD).
Methods
2
Totally 240 C57BL/6 mice were randomly divided into control group, model group, low-dose
Shuxie Decoction
group, high-dose
Shuxie Decoction
group, and agomelatine (Ago) group, with 48 mice in each group. Except for the control group, mice models of CRD were established by light deprivation. Two weeks after modeling, mice in low- and high-dose
Shuxie Decoction
groups groups were treated with 0.15 and 0.31 g/day of
Shuxie Decoction
per 10 g of body weight via oral gavage, respectively; mice in Ago group were given 0.03 mg/day of agomelatine tablets per 10 g of body weight via oral gavage; while mice in the control group and the model group wer
e given 0.1 ml/day of distilled water per 10 g of body weight by intragastric administration. All groups were administered once daily for a total of 2 weeks. On the day after the last administration, the total number of wheel rotations during the daytime (8:00-20:00) and nighttime (20:01-8:00
+1
) was observed using a running wheel experiment; metabolic cages were used to record food intake at 11:00 (ZT3), 15:00 (ZT7), 19:00 (ZT11), 23:00 (ZT15), 3:00
+1
(ZT19), and 7:00
+1
(ZT23) Beijing Time; colorimetric assay was used to measure triglyceride (TG) levels in liver tissue at different time points across groups; Hematoxylin
&
Eosin (H
&
E) Staining was used to examine liver tissue pathology; immunofluorescence assay was used to measure the immunofluorescence density of perilipin 1 (PLIN1); RT-qPCR and Western Blot assays was used to measure the mRNA expression and protein levels of brain and muscle aromatic hydrocarbon receptor nuclear translocator-like protein 1 (Bmal1) and peroxisome proliferator-activated receptor gamma coactivator 1a (PGC-1α) in brain and muscle tissues.
Results
2
The total number of nighttime wheel rotations in the control group, the low-dose
Shuxie Decoction
group and Ago group were significantly higher than that in the daytime of the same group (
P
<0.01); compared with the control group at the same time point, the total number of daytime wheel rotations in the model group was significantly increased (
P
<0.01); compared with the model group at the same time point, the total number of daytime wheel rotations in low-dose
Shuxie Decoction
group and Ago group significantly reduced, and low-dose
Shuxie Decoction
group showed a significant decrease in food intake at ZT7 (
P
<0.05). The liver pathology results showed that the liver cells of mice in control group, Ago group, low- and high-dose
Shuxie Decoction
groups ha
d regular morphology, while the model group had disordered liver cell arrangement and a small number of vacuolar cells. Compared with the control group at the same time points, TG levels in the model group significantly elevated at ZT11 and ZT15, the immunofluorescence density of perilipin1 protein in liver tissue enhanced at ZT15,
Bmal1
mRNA expression significantly elevated at ZT3 and ZT7, Bmal1 protein and its mRNA levels significantly reduced at ZT15, and
PGC
-
1α
mRNA expression and its protein levels decreased at ZT11 but increased at ZT15 (
P
<0.05 or
P
<0.01). Compared with the model group at the same time point, TG levels were reduced in low-dose
Shuxie Decoction
group and Ago group at ZT15; the immunofluorescence density of perilipin1 protein was weakened in low- and high-dose
Shuxie Decoction
groups; in low-dose
Shuxie Decoction
group,
Bmal1
mRNA expression decreased at ZT7, while Bmal1 protein levels increased at ZT3, ZT11, and ZT15, while
PGC
-
1α
mRNA expression and its protein levels increased at ZT11, and
PGC
-
1α
mRNA expression and its protein levels decreased at ZT15 (
P
<0.05 or
P
<0.01).
Conclusion
2
Low-dose
Shuxie Decoction
can regulate circadian rhythm disorders and improve hepatic lipid accumulation. The mechanism may be related to the reduction of hepatic triglycerides through the upregulation of hepatic Bmal1 and PGC-1a levels.
关键词
Keywords
references
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