YANG Fan,ZHANG Xiaoyun,ZHANG Yajing,et al.Supplemented Buyang Huanwutang Ameliorates Kidney Injury by Inhibiting Inflammation and Fibrosis in Diabetic Kidney Disease Mice[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(24):114-121.
YANG Fan,ZHANG Xiaoyun,ZHANG Yajing,et al.Supplemented Buyang Huanwutang Ameliorates Kidney Injury by Inhibiting Inflammation and Fibrosis in Diabetic Kidney Disease Mice[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(24):114-121. DOI: 10.13422/j.cnki.syfjx.20222238.
Supplemented Buyang Huanwutang Ameliorates Kidney Injury by Inhibiting Inflammation and Fibrosis in Diabetic Kidney Disease Mice
To investigate the effect of supplemented Buyang Huanwutang on kidney tissue, nuclear factor-
κ
B (NF-
κ
B) pathway, and fibrosis factors in diabetic kidney disease (DKD) mice.
Method
2
A total of 24 db/db mice (11-12 weeks old) were randomized into the model group (equivalent volume of distilled water, once/day, 8 weeks), supplemented Buyang Huanwutang group (16.0 g·kg
-1
, once/day, 8 weeks), and irbesartan group (13.5 mg·kg
-1
, once/day, 8 weeks) after adaptive feeding for 1 week and positive urinary protein monitoring, with 8 in each group. Another 8 db/m mice (11-12 weeks old) were included in the normal group (equivalent volume of distilled water, once/day, 8 weeks). Then samples were collected, and the levels of fasting blood glucose (FBG), total cholesterol (TC), triglyceride (TG), blood urea nitrogen (BUN), serum creatinine (SCr), and urinary microalbumin (mALB) were detected. The mRNA expression of tumor necrosis factor-
α
(TNF-
α
), interleukin-1
β
(IL-1
β
), and monocyte chemoattractant protein-1 (MCP-1) was determined by real-time polymerase chain reaction (Real-time PCR). The expression of nuclear factor-
κ
B (NF-
κ
B), NF-
κ
B inhibitor
α
(I
κ
B
α
), phosphorylated I
κ
B
α
(p-I
κ
B
α
), transforming growth factor-
β
1
(TGF-
β
1
),
α
-smooth muscle actin (
α
-SMA), and fibronectin (FN) in kidney tissue was measured by Western blot. The expression of NF-
κ
B in renal tissue was detected by immunofluorescence. The pathological changes of kidney were observed under light microscope.
Result
2
Compared with the normal group, the model group showed glomerular hypertrophy, increase in extracellular matrix, thickening of basement membrane, small cystic lumen, interstitial inflammatory cell infiltration, and some interstitial fibrosis (
P
<
0.01). Moreover, the model group had higher content of FBG, mALB, TC, TG, BUN, and SCr (
P
<
0.01), higher expression of inflammatory factors TNF-
α
, IL-1
β
, and MCP-1, and fibrosis-related proteins TGF-
β
1
,
α
-SMA, and FN (
P
<
0.01), and stronger activation of NF-
κ
B pathway in renal tissue (
P
<
0.01) than the normal group. Compared with the model group, supplemented Buyang Huanwutang alleviated the pathological injury in kidney (
P
<
0.01), decreased the content of mALB, TC, and TG, the content of BUN and SCr (
P
<
0.01), and the content of TNF-
α
, IL-1
β
, and MCP-1 (
P
<
0.05,
P
<
0.01), and inhibited the activation of NF-
κ
B pathway and the expression of fibrosis factors in renal tissue (
P
<
0.05,
P
<
0.01), but had no significant effect on blood glucose level.
Conclusion
2
By inhibiting NF-
κ
B pathway and the expression of fibrosis factors in renal tissue, supplemented Buyang Huanwutang can exert anti-inflammatory and anti-fibrosis effect and alleviate the pathological damage in kidney tissue, thereby protecting the kidney.
关键词
Keywords
references
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