1.湖南中医药大学针灸推拿与康复学院,湖南省长沙市岳麓区含浦科教园学士路300号,410208
2.湖南中医药大学第一附属医院
004321@hnucm.edu.cn
收稿:2025-05-22,
修回:2025-07-31,
纸质出版:2025-10-02
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屈艺卓,周竞颖,来奕恬等.艾灸“肺俞”“天枢”穴对支气管哮喘模型大鼠肺组织巨噬细胞M2极化的影响[J].中医杂志,2025,66(19):2037-2044.
QU Yizhuo,ZHOU Jingying,LAI Yitian,et al.Effects of Moxibustion at "Feishu (BL 13)" and "Tianshux (ST 25) Bronchial Asthma Model Rats Acupoints on M2 Polarization of Macrophages in Lung Tissue in Bronchial Asthma Model Rats[J].Journal of Traditional Chinese Medicine,2025,66(19):2037-2044.
屈艺卓,周竞颖,来奕恬等.艾灸“肺俞”“天枢”穴对支气管哮喘模型大鼠肺组织巨噬细胞M2极化的影响[J].中医杂志,2025,66(19):2037-2044. DOI: 10.13288/j.11-2166/r.2025.19.012.
QU Yizhuo,ZHOU Jingying,LAI Yitian,et al.Effects of Moxibustion at "Feishu (BL 13)" and "Tianshux (ST 25) Bronchial Asthma Model Rats Acupoints on M2 Polarization of Macrophages in Lung Tissue in Bronchial Asthma Model Rats[J].Journal of Traditional Chinese Medicine,2025,66(19):2037-2044. DOI: 10.13288/j.11-2166/r.2025.19.012.
目的
2
从M2型巨噬细胞极化角度探讨艾灸肺俞、天枢穴减轻支气管哮喘肺纤维化的可能作用机制。
方法
2
32只大鼠随机分为正常组、模型组、布地奈德组、艾灸组,每组各8只。除正常组外,其余各组大鼠采用卵清白蛋白致敏并激发的方法制备哮喘大鼠模型。从实验第22天开始,布地奈德组给予吸入用布地奈德混悬液(0.5 mg/ml)雾化治疗,每次30 min;艾灸组先后艾灸大鼠双侧“肺俞”“天枢”穴各15 min。模型组、布地奈德组及艾灸组大鼠在每日干预结束1 h后均采用1% 卵清白蛋白溶液进行雾化激发,每次20 min。以上干预均每天1次,连续14天。正常组大鼠不做任何干预。实验期间观察并记录各组大鼠一般情况,末次干预结束24 h后取材,采用ELISA法检测各组大鼠血清中白细胞介素10(IL-10)、趋化因子CC配体16(CCL-16)、趋化因子CC配体18(CCL-18)含量,HE、Masson及PAS染色法观察肺组织病理形态学改变,Western Blot法检测各组大鼠肺组织中甘露糖受体(CD206)、精氨酸酶1(ARG1)、类抵抗素α(FIZZ1)、壳多糖酶3样蛋白3(CHI3L3)、Ⅰ型胶原蛋白(Col Ⅰ)、弹性蛋白(Elastin)蛋白相对表达量。
结果
2
与正常组比较,模型组肺组织切片显示大鼠支气管周围炎症浸润严重,管壁增厚变窄,胶原纤维沉积严重,杯状细胞增生明显,黏液分泌增多;血清中CCL-16、CCL-18含量及肺组织中CD206、ARG1、CHI3L3、FIZZ1、Col Ⅰ、Elastin蛋白相对表达量均显著升高,血清中IL-10含量降低(
P
<0.05或
P
<0.01)。与模型组比较,布地奈德组及艾灸组大鼠肺组织结构有所改善,炎症细胞浸润及胶原沉积程度均显著降低,杯状细胞增生及黏液分泌减少;血清中CCL16、CCL18含量及肺组织中CD206、ARG1、CHI3L3、FIZZ1、Col Ⅰ、Elastin蛋白相对表达量均显著降低,血清中IL-10含量显著升高(
P
<0.05或
P
<0.01)。与艾灸组比较,布地奈德组大鼠肺组织CD206蛋白相对表达量升高,ARG1、CHI3L3、FIZZ1蛋白相对表达量均降低(
P
<0.01)。
结论
2
艾灸“肺俞”“天枢”穴可能通过调控M2型巨噬细胞极化,降低肺组织中M2型巨噬细胞分泌的肺纤维化相关蛋白水平,调节血清中促纤维化相关因子的含量,进而改善哮喘模型大鼠的肺纤维化程度。
Objective
2
To explore the potential mechanism of moxibustion at Feishu (BL 13) and Tianshu (ST 25) acupoints to alleviate pulmonary fibrosis in bronchial asthma from the perspective of M2 macrophage polarization.
Methods
2
Thirty-two rats were randomly divided into four groups, control group, model group, budesonide group, and moxibustion group, with 8 rats in each group. Except for the control group, asthma models were established by sensitizing rats with ovalbumin followed by challenge. Starting from day 22 of the experiment, the budesonide group received inhaled budesonide suspension (0.5 mg/ml) nebulization therapy for 30 minutes per session; the moxibustion group received bilateral moxibustion at "Feishu (BL 13)" and "Tianshu (ST 25)" acupoints for 15 minutes each. Rats in the model, budesonide, and moxibustion groups received 20-minute nebulized challenges with 1% ovalbumin solution 1 hour after daily intervention. All interventions were administered once daily for 14 consecutive days. Rats in the control group received no intervention. During the experiment, the general condition of rats in each group was observed and recorded. Tissue samples were collected 24 hours after the final intervention. ELISA method was used to detect the levels of interleukin-10 (IL-10), chemokine CC ligand 16 (CCL-16), and chemokine CC ligand 18 (CCL-18) levels in the serum of rats from each group; histopathological changes in lung tissue were examined using hematoxylin and eosin (HE), Masson's trichrome, and periodic acid-Schiff (PAS) staining. Western Blot analysis was performed to detect the relative expression levels of mannose receptor (CD206), arginase 1 (ARG1), fetuin-1 (FIZZ1), chitinase-like protein 3 (CHI3L3), type Ⅰ collagen (Col Ⅰ), and Elastin in lung tissues of rats.
Results
2
Compared with the control group, the model group showed severe inflammatory infiltration around the bronchi, thickened and narrowed bronchial walls, severe deposition of collagen fibers, obvious goblet cell hyperplasia, and increased mucus secretion in lung tissue sections; the levels of CCL-16 and CCL-18 in the serum and the relative expression levels of CD206, ARG1, CHI3L3, FIZZ1, Col Ⅰ, and Elastin in lung tissue significantly increased, while the level of IL-10 in the serum significantly decreased (
P
<0.05 or
P
<0.01). Compared with the model group, the budesonide and moxibustion groups showed improved lung tissue architecture in rats, with significantly reduced inflammatory cell infiltration and collagen deposition, decreased goblet cell hyperplasia, and diminished mucus secretion; serum levels of CCL16 and CCL18, along with relative expression levels of
CD206, ARG1, CHI3L3, FIZZ1, Col Ⅰ, and elastin significantly reduced, while serum IL-10 levels significantly elevated (
P
<0.05 or
P
<0.01). Compared with the moxibustion group, the relative expression of CD206 protein in lung tissue increased in the budesonide group, while the relative expression of ARG1, CHI3L3, and FIZZ1 proteins decreased (
P
<0.01).
Conclusion
2
Moxibustion at "Feishu (BL 13)" and "Tianshu (ST 25)" acupoints may improve pulmonary fibrosis in asthma model rats by regulating M2 macrophage polarization, reducing the expression levels of lung fibrosis-related proteins secreted by M2 macrophages in lung tissue, and modulating the content of pro-fibrotic related factors in serum.
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