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1.陕西中医药大学 基础医学院,陕西 咸阳 712046
2.陕西中医药大学 附属医院,陕西 咸阳 712000
惠毅,博士,副教授,从事肺肠合治法治疗呼吸系统疾病的基础与临床研究,Tel:029-38185122,E-mail:drhy1982@126.com
史捷,主任医师,从事中医药治疗呼吸系统疾病的基础与临床研究,Tel:029-33322595,E-mail:2780067265@qq.com
收稿日期:2021-04-13,
网络出版日期:2021-07-29,
纸质出版日期:2022-04-20
移动端阅览
惠毅,张新悦,郑旭锐等.肺肠合治法对支气管哮喘小鼠血管活性肠肽和p38 MAPK信号通路的影响[J].中国实验方剂学杂志,2022,28(08):108-115.
HUI Yi,ZHANG Xin-yue,ZHENG Xu-rui,et al.Effect of Combined Therapy of Lung and Intestine on VIP and p38 MAPK Signaling Pathways in Bronchial Asthma Mice[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(08):108-115.
惠毅,张新悦,郑旭锐等.肺肠合治法对支气管哮喘小鼠血管活性肠肽和p38 MAPK信号通路的影响[J].中国实验方剂学杂志,2022,28(08):108-115. DOI: 10.13422/j.cnki.syfjx.20211801.
HUI Yi,ZHANG Xin-yue,ZHENG Xu-rui,et al.Effect of Combined Therapy of Lung and Intestine on VIP and p38 MAPK Signaling Pathways in Bronchial Asthma Mice[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(08):108-115. DOI: 10.13422/j.cnki.syfjx.20211801.
目的
2
观察中医治疗肺系疾病的常用治法肺肠合治法对支气管哮喘小鼠的治疗作用,进一步检测与哮喘发病机制密切相关的血管活性肠肽(VIP)和p38丝裂原活化蛋白激酶(p38 MAPK)信号通路相关蛋白的变化,以阐明肺肠合治法治疗支气管哮喘的作用机制。
方法
2
将60只昆明种小鼠随机选12只作为正常组。其余小鼠通过卵清蛋白致敏复制小鼠支气管哮喘模型。分为正常组、模型组、地塞米松组(0.5 mg·kg
-1
·d
-1
)、中药治肺组(2.73 g·kg
-1
·d
-1
)、肺肠合治组(6.825 g·kg
-1
·d
-1
),灌胃30 d后取血清及肺组织样本。酶联免疫吸附测定法(ELISA)检测各组小鼠血清中VIP、白细胞介素-6(IL-6)、肿瘤坏死因子-
α
(TNF-
α
)含量,实时荧光定量聚合酶链式反应(Real-time PCR)法检测各组小鼠肺组织中TNF-
α
、IL-6、p38 MAPK mRNA的表达,蛋白免疫印迹法(Western blot)检测各组小鼠肺组织中TNF-
α
、IL-6、p38 MAPK,磷酸化p38 MAPK(p-p38 MAPK)蛋白的表达。
结果
2
与正常组比较,模型组小鼠血清VIP含量明显降低(
P<
0.05),TNF-
α
、IL-6含量明显升高(
P<
0.05),肺组织TNF-
α
、IL-6、p38 MAPK mRNA和TNF-
α
、IL-6、p-p38 MAPK/p38 MAPK蛋白相对表达量明显升高(
P<
0.05);与模型组比较,各治疗组小鼠血清VIP含量明显升高(
P<
0.05),TNF-
α
、IL-6含量明显升高(
P<
0.05),肺组织TNF-
α
、IL-6、p38 MAPK mRNA和TNF-
α
、IL-6、p-p38 MAPK/p38 MAPK蛋白相对表达量明显降低(
P<
0.05);与肺肠合治组比较,地塞米松组小鼠血清TNF-
α
、IL-6明显增高(
P<
0.05),肺组织TNF-
α
、IL-6 mRNA和TNF-
α
、IL-6蛋白相对表达量明显降低(
P<
0.05),肺组织p38 MAPK、VIP mRNA和p-p38 MAPK/p38 MAPK蛋白相对表达量明显升高(
P<
0.05),中药治肺组小鼠血清VIP、TNF-
α
、IL-6明显降低(
P<
0.05),肺组织TNF-
α
、IL-6、p38 MAPK mRNA和TNF-
α
、IL-6、p-p38 MAPK/p38 MAPK蛋白相对表达量均明显升高(
P<
0.05),肺组织VIP mRNA表达水平明显降低(
P<
0.05)。
结论
2
肺肠合治法可以增加内源性VIP,抑制p38 MAPK信号通路的过度活化,减少炎症因子释放,抑制肺部炎症反应,治疗支气管哮喘。
Objective
2
To observe the therapeutic effects of the combined therapy of lung and intestine, a common treatment for pulmonary diseases in traditional Chinese medicine (TCM), on bronchial asthma mice, and further detect the changes of vasoactive intestinal peptide (VIP) and p38 mitogen-activated protein kinase (p38 MAPK) signaling pathway-related proteins which are closely related to the pathogenesis of asthma, in order to elucidate the mechanism of the combined therapy of lung and intestine in the treatment of bronchial asthma.
Method
2
A total of 60 Kunming mice were randomly divided into normal group, model group, dexamethasone group (0.5 mg·kg
-1
·d
-1
), TCM group (2.73 g·kg
-1
·d
-1
), and lung-intestine treatment group (6.825 g·kg
-1
·d
-1
), 12 mice in each group. All mice except the normal group were sensitized by ovalbumin to induce bronchial asthma. After 30 days of intragastric administration, serum and lung tissue samples were obtained. The content of VIP, interleukin-6 (IL-6), and tumor necrosis factor-
α
(TNF-
α
) in the serum of mice in each group was detected by enzyme-linked immunosorbent assay (ELISA). The mRNA levels of TNF-
α
, IL-6, and p38 MAPK in lung tissues of mice were detected by real-time quantitative polymerase chain reaction (Real-time PCR), and the protein levels of TNF-
α
, IL-6, p38 MAPK, and phosphorylated p38 MAPK (p-p38 MAPK) in lung tissues of mice were assayed by Western blot (WB).
Result
2
Compared with the normal group, the model group showed decreased content of serum VIP (
P
<
0.05), increased content of TNF-
α
and IL-6 (
P
<
0.05), up-regulated mRNA levels of TNF-
α
, IL-6, and p38 MAPK, and elevated protein levels of TNF-
α
, IL-6, and p-p38 MAPK/p38 MAPK in lung tissues (
P
<
0.05). Compared with the model group, the treatment groups exhibited increased content of serum VIP, TNF-
α
, and IL-6 (
P
<
0.05), down-regulated mRNA levels of TNF-
α
, IL-6, and p38 MAPK, and lower protein levels of TNF-
α
, IL-6, and p-p38 MAPK/p38 MAPK in lung tissues (
P
<
0.05). As compared with the lung-intestine treatment group, the serum TNF-
α
and IL-6 levels in the dexamethasone group were increased (
P
<
0.05), and the mRNA and protein levels of TNF-
α
and IL-6 in lung tissues were down-regulated (
P
<
0.05), while the levels of p38 MAPK, VIP mRNA, and p-p38 MAPK/p38 MAPK protein in lung tissues were up-regulated (
P
<
0.05). The serum VIP, TNF-
α
, and IL-6 levels in the TCM group were decreased (
P
<
0.05), and the mRNA levels of TNF-
α
, IL-6, p38 MAPK and protein levels of TNF-
α
, IL-6, p-p38 MAPK/p38 MAPK in lung tissues were up-regulated (
P
<
0.05), while the level of VIP mRNA in lung tissues was down-regulated (
P
<
0.05).
Conclusion
2
Through increasing endogenous VIP and inhibiting the excessive activation of p38 MAPK signaling pathway, the combined therapy of lung and intestine can reduce the release of inflammatory factors, inhibit pulmonary inflammation response, and treat bronchial asthma.
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