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1.安徽中医药大学 中医学院,合肥 230038
2.安徽中医药大学 新安医学教育部重点实验室,合肥 230038
李飞翔,在读硕士,从事经方治疗疑难病证研究,E-mail:asvr2018@163.com
储全根,博士,教授,从事经方治疗疑难病证研究,E-mail:286428483@qq.com
收稿日期:2021-08-02,
网络出版日期:2021-09-30,
纸质出版日期:2021-11-20
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李飞翔,储全根,王盼等.痰瘀同治调控TLR4/NF-κB/IκB通路对糖尿病大鼠心肌炎症反应的影响[J].中国实验方剂学杂志,2021,27(22):59-64.
LI Fei-xiang,CHU Quan-gen,WANG Pan,et al.Co-Treatment of Phlegm and Stasis Improves Myocardial Inflammation in Rats with Diabetes Mellitus via TLR4/NF-κB/IκB Pathway[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(22):59-64.
李飞翔,储全根,王盼等.痰瘀同治调控TLR4/NF-κB/IκB通路对糖尿病大鼠心肌炎症反应的影响[J].中国实验方剂学杂志,2021,27(22):59-64. DOI: 10.13422/j.cnki.syfjx.20212237.
LI Fei-xiang,CHU Quan-gen,WANG Pan,et al.Co-Treatment of Phlegm and Stasis Improves Myocardial Inflammation in Rats with Diabetes Mellitus via TLR4/NF-κB/IκB Pathway[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(22):59-64. DOI: 10.13422/j.cnki.syfjx.20212237.
目的
2
观察痰瘀同治对糖尿病大鼠心肌Toll样受体4(TLR4)/核转录因子-
κ
B(NF-
κ
B)/核转录因子-
κ
B抑制蛋白(I
κ
B)信号通路的干预作用,探讨其改善糖尿病大鼠心肌炎症病变的相关机制。
方法
2
选取清洁级雄性SD大鼠45只,随机分为正常组、化痰组、化瘀组、痰瘀同治组、阿拉氯胺组、模型组。除正常组外,其余各大鼠单次腹腔注射链脲佐菌素(STZ)55 mg·kg
-1
建立糖尿病模型,正常喂养3周后,化痰组、化瘀组、痰瘀同治组每日分别给予小陷胸汤(4.05 g·kg
-1
),血府逐瘀汤(7.02 g·kg
-1
),抵当陷胸汤(8.10 g·kg
-1
)灌胃,阿拉氯胺组每日予阿拉氯胺(3 mg·kg
-1
)灌胃,连续给药8周后麻醉取材。采用酶联免疫吸附测定法(ELISA)检测心肌组织TLR4蛋白及肿瘤坏死因子-
α
(TNF-
α
)表达水平;免疫组化法检测NF-
κ
B p65和NF-
κ
B抑制蛋白
α
(I
κ
B
α
)表达水平;实时荧光定量聚合酶链式反应(Real-time PCR)检测大鼠心肌TLR4,NF-
κ
B p65,I
κ
B
α
及TNF-
α
的mRNA表达水平。
结果
2
与正常组比较,模型组TLR4,NF-
κ
B p65,I
κ
B
α
及TNF-
α
蛋白和mRNA表达水平显著升高(
P
<
0.01);与模型组比较,各用药组TLR4,NF-
κ
B p65,I
κ
B
α
及TNF-
α
蛋白和mRNA表达水平均有不同程度下降(
P
<
0.01);组间比较发现,痰瘀同治组TLR4,NF-
κ
B p65,I
κ
B
α
及TNF-
α
蛋白和mRNA表达水平比化瘀组和化痰组下降更明显(
P
<
0.05
,P
<
0.01)。
结论
2
痰瘀同治法能够改善糖尿病大鼠心肌炎症病变,且效果优于单独使用化痰法或化瘀法,其机制可能与抑制TLR4/NF-
κ
B/I
κ
B信号通路的激活有关。
Objective
2
To observe the intervention of phlegm-stasis co-treatment on the myocardial Toll-like receptor 4 (TLR4)/nuclear factor-
κ
B (NF-
κ
B)/nuclear factor-
κ
B inhibitor (I
κ
B) signaling pathway, and to investigate its mechanism in improving myocardial inflammation in rats with diabetes mellitus (DM).
Method
2
Forty-five male SD rats of SPF grade were randomly divided into a normal group, a phlegm-resolving (Xiao Xianxiongtang, 4.05 g·kg
-1
) group, a stasis-resolving (Xuefu Zhuyutang, 7.02 g·kg
-1
) group, a co-treatment (Didang Xianxiong decoction, 8.10 g·kg
-1
) group, an alagebrium chloride (3 mg·kg
-1
) group, and a model group. Except for normal group, the other rats was induced by a single intraperitoneal injection of 55 mg·kg
-1
streptozotocin (STZ) to establish DM model. After adaptive feeding for three weeks, the rats were treated correspondingly by gavage daily for eight weeks. Rats were sampled under anesthesia. Enzyme-linked immunosorbent assay(ELISA) was used to detect the protein expression of TLR4 and tumor necrosis factor-alpha (TNF-
α
) in myocardial tissues. The expression levels of NF-
κ
B p65 and I
κ
B
α
were detected by immunohistochemistry. NF-
κ
B p65, I
κ
B
α
, TNF-
α
, and TLR4 mRNA expression levels were detected by real-time fluorescence-based quantitative polymerase chain reaction(Real-time PCR).
Result
2
The protein and mRNA levels of TLR4, NF-
κ
B p65, I
κ
B
α
, and TNF-
α
were higher in the model group than those in the normal group (
P
<
0.01). TLR4, NF-
κ
B p65, I
κ
B
α
, and TNF-
α
protein and mRNA expression levels were reduced to varying degrees in the groups with drug intervention as compared with those in the model group (
P
<
0.01). The inter-group comparison revealed that the co-treatment group showed more manifest reduction in protein and mRNA expression levels of TLR4, NF-
κ
B p65, I
κ
B
α,
and TNF-
α
than the phlegm-resolving group and the stasis-resolving group (
P
<
0.05
,P
<
0.01).
Conclusion
2
The co-treatment of phlegm and stasis can improve myocardial inflammation in DM rats, with superior effect to either the phlegm-resolving method or the stasis-resolving method. The underlying mechanism may be related to the inhibition of TLR4/NF-
κ
B/I
κ
B signaling pathway activation.
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