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1.河北中医学院,石家庄 050091
2.河北省中医院,石家庄 050011
张禹,在读博士,从事中医药治疗肾病的研究,E-mail:zy1009620089@163.com
郭登洲,教授,博士生导师,从事中医药治疗肾病的研究,E-mail:guodengzhou@sohu.com
收稿日期:2021-01-18,
网络出版日期:2021-03-18,
纸质出版日期:2021-05-20
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张禹,王广伟,吕哲等.基于NF-κB炎症通路探讨五味消毒饮对IgA肾病大鼠的抗炎机制[J].中国实验方剂学杂志,2021,27(10):15-22.
ZHANG Yu,WANG Guang-wei,LYU Zhe,et al.Anti-inflammatory Mechanism of Wuwei Xiaoduyin on IgA Nephropathy Rats Based on NF-κB Inflammatory Signaling Pathway[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(10):15-22.
张禹,王广伟,吕哲等.基于NF-κB炎症通路探讨五味消毒饮对IgA肾病大鼠的抗炎机制[J].中国实验方剂学杂志,2021,27(10):15-22. DOI: 10.13422/j.cnki.syfjx.20210804.
ZHANG Yu,WANG Guang-wei,LYU Zhe,et al.Anti-inflammatory Mechanism of Wuwei Xiaoduyin on IgA Nephropathy Rats Based on NF-κB Inflammatory Signaling Pathway[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(10):15-22. DOI: 10.13422/j.cnki.syfjx.20210804.
目的
2
观察五味消毒饮对免疫球蛋白(Ig)A肾病(IgAN)大鼠核转录因子-
κ
B(NF-
κ
B)信号通路的影响,并探讨其治疗IgA肾病的作用机制。
方法
2
将40只SD大鼠随机分为正常组,模型组,贝那普利组(10 mg·kg·d
-1
),五味消毒饮组(2.75 g·kg·d
-1
),每组10只。采用牛血清白蛋白(BSA)灌胃,四氯化碳(CCl
4
)皮下注射以及脂多糖(LPS)尾静脉注射方法共9周建立IgAN大鼠模型,各组给予相应剂量的药物灌胃,正常组和模型组给予等量生理盐水,连续给药28 d。检测大鼠24 h尿蛋白(UTP),血肌酐(SCr),尿素氮(BUN),血清白蛋白(ALB)水平,酶联免疫吸附测定法(ELISA)检测血清中肿瘤坏死因子-
α
(TNF-
α
),白细胞介素-1
β
(IL-1
β
),白细胞介素-6(IL-6)的含量,苏木素-伊红(HE)染色,免疫荧光及透射电镜观察肾脏病理改变,免疫组化法(IHC),实时荧光定量聚合酶链式反应(Real-time PCR)及蛋白免疫印迹法(Western blot)分别检测肾组织中IL-6,I
κ
B激酶
β
(IKK
β
),磷酸化I
κ
B激酶
β
(p-IKK
β
),NF-
κ
B抑制蛋白
α
(I
κ
B
α
),磷酸化NF-
κ
B抑制蛋白
α
(p-I
κ
B
α
),NF-
κ
B p65,磷酸化NF-
κ
B p65(p-p65)的表达。
结果
2
与正常组比较,模型组大鼠UTP水平显著升高(
P
<
0.01),肾小球系膜细胞增生,系膜基质增多,系膜增厚,电子致密物沉积增多,大量IgA沉积于肾小球系膜区并呈现不规则颗粒及团块状分布;血清中TNF-
α
,IL-1
β
,IL-6水平显著升高(
P
<
0.01);肾组织中IL-6,IKK
β
,p-IKK
β
、I
κ
B
α
,p-I
κ
B
α
,NF-
κ
B p65,p-p65的表达显著升高(
P
<
0.01)。与模型组比较,各给药组大鼠UTP水平显著降低(
P
<
0.01),肾组织损伤情况均有所减轻;血清中TNF-
α
,IL-1
β
,IL-6水平显著降低(
P
<
0.01);肾组织中IL-6,IKK
β
,p-IKK
β
,I
κ
B
α
,p-I
κ
B
α
,NF-
κ
B p65,p-p65的表达显著降低(
P
<
0.01)。各组间SCr,BUN,血清白蛋白相比无明显差异。
结论
2
五味消毒饮可降低IgAN大鼠的蛋白尿,其作用机制可能与抑制NF-
κ
B信号通路及其相关炎症因子的过度表达有关。
Objective
2
To observe the effect of Wuwei Xiaoduyin on the nuclear factor-
κ
B (NF-
κ
B) signaling pathway in immunoglobulinA nephropathy(IgAN) rats, and to explore its mechanism of action in the treatment of IgA nephropathy.
Method
2
The 40 SD rats were randomly divided into control group, model group, benazepril group (10 mg·kg·d
-1
) and Wuwei Xiaoduyin group (2.75 g·kg·d
-1
), with 10 rats in each group. The IgA nephropathy rat model was established by intragastric administration of bovine serum albumin (BSA), subcutaneous injection of carbon tetrachloride (CCl
4
) and tail vein injection of lipopolysaccharide (LPS) for 9 weeks. The rats in each group were given corresponding doses of drugs by gavage, while the rats in the control group and model group were given the same amount of normal saline for successive 28 days. The levels of 24-hour urinary protein (UTP), serum creatinine (SCr), blood urea nitrogen (BUN) and serum albumin (ALB) were detected. The contents of tumor necrosis factor-
α
(TNF-
α
), interleukin-1
β
(IL-1
β
) and interleukin-6 (IL-6) in serum were detected by enzyme-linked immunosorbent assay (ELISA), the hematoxylineosin staining (HE), immunofluorescence and transmission electron microscopy were used to observe the renal pathological changes, the expressions of IL-6, I
κ
B kinase
β
(IKK
β
), phosphorylated I
κ
B kinase
β
(p-IKK
β
), NF-
κ
B inhibitor protein
α
(I
κ
B
α
), phosphorylated NF-
κ
B inhibitor protein
α
(p-I
κ
B
α
), NF-
κ
B p65 and p-NF-
κ
B p65 were detected by immunohistochemistry (IHC), real-time PCR (RT-PCR) and Western blot, respectively.
Result
2
Compared with the control group, the level of UTP in the model group significantly increased (
P
<
0.01), cultured glomerular mesangial cells proliferated, mesangial matrix and electronic dense deposit increased, mesentery thickened. A large amount of IgA was deposited in the glomerular mesangial area and showed irregular particles and mass distribution, the levels of TNF-
α
, IL-1
β
, IL-6 in serum significantly increased (
P
<
0.01), the expression levels of IL-6, IKK
β
, p-IKK
β,
NF-
κ
B p65 and p-NF-
κ
B p65 in renal tissue significantly increased (
P
<
0.01).Compared with the model group, the levels of UTP in each administration group significantly decreased (
P
<
0.01), and the renal tissue injury alleviated, the levels of TNF-
α
, IL-1
β
, IL-6 in serum significantly decreased (
P
<
0.01), the expressions of IL-6, IKK
β
, p-IKK
β
, I
κ
B
α
, p-I
κ
B
α
, NF-
κ
B p65 and p-NF-
κ
B p65 in the renal tissue significantly decreased (
P
<
0.01). There were no significant differences in serum creatinine, blood urea nitrogen and serum albumin among the groups.
Conclusion
2
Wuwei Xiaoduyin can reduce proteinuria in IgA nephropathy rats, and its mechanism may be related to the inhibition of NF-
κ
B signaling pathway and the over expression of related inflammatory factors.
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