CAI Zhengyin,CHU Jun,CHU Quangen,et al.Effect of Didang Xianxiong Decoction on Myocardium Ultrastructure and Expression of CTGF and Its Receptor LRP in Diabetic Rats[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(22):100-105.
CAI Zhengyin,CHU Jun,CHU Quangen,et al.Effect of Didang Xianxiong Decoction on Myocardium Ultrastructure and Expression of CTGF and Its Receptor LRP in Diabetic Rats[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(22):100-105. DOI: 10.13422/j.cnki.syfjx.20221202.
Effect of Didang Xianxiong Decoction on Myocardium Ultrastructure and Expression of CTGF and Its Receptor LRP in Diabetic Rats
To observe the effect of Didang Xianxiong decoction on the ultrastructure of myocardium and the expression of connective tissue growth factor (CTGF) and low-density lipoprotein receptor-related protein (LRP) in diabetic rats.
Method
2
The diabetic rat model was established by the intraperitoneal injection of high-dose streptozotocin (55 mg·kg
-1
) and the rats were further fed for 3 weeks. Forty model rats were randomly assigned into model group, a Xiao Xianxiongtang (4.05 g·kg
-1
·d
-1
) group, Xuefu Zhuyutang (6.30 g·kg
-1
·d
-1
) group, Didang Xianxiong decoction (8.10 g·kg
-1
·d
-1
) group, and alagebrium chloride (ALT-711, 3 mg·kg
-1
·d
-1
) group, with 8 rats in each group. Ten normal healthy rats were randomly selected as the blank group. The corresponding drugs were administrated by gavage, and the blank group and the model group were given distilled water at a dose of 10 mL·kg
-1
·d
-1
for 8 weeks. The myocardial tissue was collected from the rats under anesthesia at the end of the 8
th
week for pathological examination. The expression of CTGF and its receptor LRP in the myocardial tissue was detected by immunohistochemistry and Western blot.
Result
2
Compared with the blank group, the modeling led to obvious ultrastructural damage of the myocardium, up-regulated the expression of CTGF (
P
<
0.01), and did not significantly change the expression of LRP. Compared with the model group, the drugs alleviated the damage in myocardium ultrastructure, down-regulated the expression of CTGF (
P
<
0.01), and did not significantly change the expression of LRP. Moreover, Didang Xianxiong decoction showed better performance than Xiao Xianxiongtang and Xuefu Zhuyutang (
P
<
0.01).
Conclusion
2
Didang Xianxiong decoction may protect myocardial tissue by down-regulating the high expression of CTGF in myocardial tissue of diabetic rats, thereby delaying myocardial fibrosis. The results indicate that the therapy of treating both phlegm and blood stasis has better performance than the simple method of resolving phlegm or stasis.
关键词
Keywords
references
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