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南京中医药大学 附属医院,南京 210029
卓月,在读硕士,从事中医儿科学研究,E-mail:1954409441@qq.com
*袁雪晶,博士,副教授,主任医师,硕士生导师,从事儿童哮喘、紫癜、抽动症等研究,E-mail:yuanxuejing2007@126.com
收稿日期:2018-11-08,
网络出版日期:2019-01-18,
纸质出版日期:2019-05-20
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卓月, 袁雪晶, 纪建建. 固本防哮饮对小鼠哮喘缓解期TLR4及TLR7的调节作用[J]. 中国实验方剂学杂志, 2019,25(10):57-63.
Yue ZHUO, Xue-jing YUAN, Jian-jian JI. Regulatory Effect of Guben Fangxiao Decoction on Expression of TLR4 and TLR7 in Mice with Asthma Remission[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(10): 57-63.
卓月, 袁雪晶, 纪建建. 固本防哮饮对小鼠哮喘缓解期TLR4及TLR7的调节作用[J]. 中国实验方剂学杂志, 2019,25(10):57-63. DOI: 10.13422/j.cnki.syfjx.20190940.
Yue ZHUO, Xue-jing YUAN, Jian-jian JI. Regulatory Effect of Guben Fangxiao Decoction on Expression of TLR4 and TLR7 in Mice with Asthma Remission[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(10): 57-63. DOI: 10.13422/j.cnki.syfjx.20190940.
目的:
2
观察固本防哮饮对哮喘缓解期小鼠模型Toll-样受体(TLR)4,TLR7,核转录因子-
κ
B p65(NF-
κ
B p65),NF-
κ
B抑制蛋白
α
(I
κ
B
α
)的调节作用,探讨固本防哮饮治疗哮喘缓解期的机制。
方法:
2
呼吸道合胞病毒(RSV)联合鸡卵蛋白(OVA)对3周龄BALB/c小鼠制备哮喘缓解期模型,将60只小鼠分为空白组、模型组、地塞米松组(0.001 g·kg
-1
)以及固本防哮饮低、中、高剂量(6.5,13,26 g·kg
-1
)组,分别进行干预,共给药28 d,每天1次。给药结束后处死小鼠,苏木素-伊红(HE)染色观察哮喘小鼠肺组织病理形态学变化,并对肺部炎症情况进行评分;蛋白免疫印迹法(Western blot)检测小鼠肺组织TLR4,TLR7,I
κ
B
α
及肺组织细胞核内NF-
κ
B p65蛋白表达水平;免疫荧光共聚焦观察NF-
κ
B p65在细胞核表达情况。
结果:
2
与空白组比较,模型组小鼠肺组织有明显炎症细胞浸润及支气管狭窄(
P
<
0.01),同时小鼠肺组织细胞核内NF-
κ
B p65分布显著增多(
P
<
0.01),表达明显增高(
P
<
0.05),TLR4,TLR7,I
κ
B
α
蛋白表达明显降低(
P
<
0.05);与模型组比较,固本防哮饮各剂量组能显著缓解小鼠肺组织炎症浸润(
P
<
0.01),降低肺组织核蛋白NF-
κ
B p65的表达(
P
<
0.01),核蛋白NF-
κ
B p65入核情况减轻(
P
<
0.01),同时显著增加TLR4,TLR7,I
κ
B
α
蛋白的表达(
P
<
0.01)。
结论:
2
固本防哮饮能够缓解气道炎症,并且可能是通过调节TLR4,TLR7,NF-
κ
B p65,I
κ
B
α
实现其治疗作用。
Objective:
2
To observe the regulatory effect of Guben Fangxiao decoction on Toll-like receptor (TLR)4
TLR7
nuclear factor-kappa B p65 (NF-
κ
B p65) and NF-
κ
B inhibitor protein alpha (I
κ
B
α
) in mice with asthma remission
in order to explore the mechanism of Guben Fangxiao decoction in treating asthma remission.
Method:
2
Respiratory syncytial virus (RSV) combined with chicken ovalbumin (OVA) was used to build asthma remission model in 3-week-old BALB/c mice. Sixty mice were divided into blank group
model group
dexamethasone group (0.001 g·kg
-1
)
low
medium and high-dose Guben Fangxiao decoction group (6.5
13
26 g·kg
-1
)
respectively. Intervention was given once a day for 28 days. After administration
the mice were put to death. Hematoxylin-eosin (HE) staining was used to observe the pathological changes of lung tissue and score the pulmonary inflammation. Western blot was used to detect the expressions of TLR4
TLR7
I
κ
B
α
and nuclear NF-
κ
B p65 in lung tissue of mice. Immunofluorescence was used to observe the expression of NF-
κ
B p65 in cellnucleuses.
Result:
2
Compared with blank group
the lung tissue of model group showed obvious inflammatory cell infiltration (
P
<
0.01) and bronchial stenosis
the nuclear distribution of NF-
κ
B p65 increased significantly (
P
<
0.01)
and the expressions of TLR4
TLR7 and I
κ
B
α
proteins increased significantly (
P
<
0.05). Compared with the model group
Guben Fangxiao decoction could significantly alleviate the inflammatory infiltration of lung tissue in mice (
P
<
0.01)
reduce the expression of nuclear protein NF-
κ
B p65 (
P
<
0.01)
relieve the nuclear entry of nuclear protein NF-
κ
B p65 (
P
<
0.01)
and increase the expressions of TLR4
TLR7 and I
κ
B
α
proteins (
P
<
0.01).
Conclusion:
2
Guben Fangxiao decoction can alleviate airway inflammation
and its therapeutic effect may be achieved by regulating TLR4
TLR7
NF-
κ
B p65 and I
κ
B
α
.
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