1.遵义医科大学附属医院全科医学科,贵州 遵义 563000
2.遵义医科大学第二附属医院呼吸内科,贵州 遵义 563000
3.遵义医科大学附属医院呼吸内科,贵州 遵义 563000
Received:15 November 2022,
Revised:2023-03-29,
Accepted:30 March 2023,
Published:15 May 2023
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邹曲,符丹丹,范腾阳,等.汉黄芩素对慢性阻塞性肺疾病模型大鼠气道炎症的影响及机制 [J].中国药房,2023,34(09):1060-1065.
ZOU Qu,FU Dandan,FAN Tengyang,et al.Effects and mechanisms of wogonin on airway inflammation in rats with chronic obstructive pulmonary disease[J].ZHONGGUO YAOFANG,2023,34(09):1060-1065.
邹曲,符丹丹,范腾阳,等.汉黄芩素对慢性阻塞性肺疾病模型大鼠气道炎症的影响及机制 [J].中国药房,2023,34(09):1060-1065. DOI: 10.6039/j.issn.1001-0408.2023.09.07.
ZOU Qu,FU Dandan,FAN Tengyang,et al.Effects and mechanisms of wogonin on airway inflammation in rats with chronic obstructive pulmonary disease[J].ZHONGGUO YAOFANG,2023,34(09):1060-1065. DOI: 10.6039/j.issn.1001-0408.2023.09.07.
目的
2
研究汉黄芩素(Wog)对慢性阻塞性肺疾病(COPD)模型大鼠气道炎症的影响及可能机制。
方法
2
将84只大鼠按随机数字表法分为对照组,模型组,Wog低、高剂量组(灌胃给药,50、100 mg/kg),氨茶碱组(阳性对照,灌胃给药,2.3 mg/kg),重组大鼠受体相互作用蛋白激酶1[rRIPK1,受体相互作用蛋白激酶1(RIPK1)激活剂
]
组(尾静脉注射给药,8 µg/kg),Wog高剂量+rRIPK1组(灌胃100 mg/kg Wog并尾静脉注射8 µg/kg rRIPK1),每组12只。除对照组外,其余各组大鼠均利用烟熏联合气管注射脂多糖的方法构建COPD模型。建模24 h后,进行给药处理;每天给药1次,持续4周。末次给药后,测定各组大鼠的吸气峰流量(PIF)、呼气峰流量(PEF)、每
分钟通气量(MV)和第1秒用力呼气容积(FEV
1
)/用力肺活量(FVC)比值,测定大鼠血清中白细胞介素1β(IL-1β)、IL-6、肿瘤坏死因子α(TNF-α)水平,观察大鼠肺组织病理形态学变化,测定大鼠肺上皮细胞凋亡率,并测定大鼠肺组织中RIPK1、RIPK3、混合系激酶区域样蛋白(MLKL) mRNA和RIPK1、RIPK3、磷酸化MLKL(p-MLKL)蛋白表达水平。
结果
2
与对照组比较,模型组大鼠PIF、PEF、MV、FEV
1
/FVC比值显著降低(
P
<0.05),IL-1β、IL-6、TNF-α水平显著升高(
P
<0.05),肺组织有大量炎症细胞浸润、支气管壁增厚,肺上皮细胞凋亡率及RIPK1、RIPK3、MLKL mRNA和RIPK1、RIPK3、p-MLKL蛋白表达水平也显著升高(
P
<0.05)。与模型组比较,Wog低、高剂量组大鼠上述指标均显著改善(
P
<0.05),病理损伤明显减轻;而rRIPK1组大鼠对应指标却显著恶化(
P
<0.05),病理损伤也进一步加重;并且,rRIPK1可明显减弱高剂量Wog对COPD大鼠气道炎症和RIPK1/RIPK3/MLKL通路的抑制作用(
P
<0.05)。
结论
2
Wog可能通过抑制RIPK1/RIPK3/MLKL信号通路改善COPD大鼠的气道炎症。
OBJECTIVE
2
To study the effects and potential mechanism of wogonin (Wog) on airway inflammation in rats with chronic obstructive pulmonary disease (COPD).
METHODS
2
Eighty-four rats were randomly divided into control group, model group, Wog low-dose and high-dose groups (intragastric administration of 50, 100 mg/kg), aminophylline group (positive control, intragastric administration of 2.3 mg/kg), recombinant rat receptor-interacting protein kinase 1 [rRIPK1, receptor-interacting protein kinase 1 (RIPK1) activator
]
group (tail vein injection of 8 µg/kg), and Wog high-dose+rRIPK1 group (intragastric administration of Wog 100 mg/kg+tail vein injection of rRIPK 8 µg/kg), with 12 rats in each group. Except for control group, COPD model of other groups was induced by smoking combined with tracheal injection of lipopolysaccharide. Twenty-four hours after successful modeling, the rats were administered once a day for 4 weeks. The changes of peak inspiratory flow (PIF), peak expiratory flow (PEF) and minute ventilation (MV),forced expiratory volume in one second(FEV
1
)/forced vital capacity(FVC) were measured after the last medication; the serum levels of inter
leukin 1β(IL-1β), IL-6 and tumor necrosis factor-α (TNF-α) were measured by ELISA; the pathological changes of lung tissue in rats were observed; the apoptotic rate of pulmonary epithelial cells was detected. mRNA expressions of RIPK1, RIPK3 and mixed lineage kinase domain-like protein (MLKL), and protein expressions of RIPK1, RIPK3 and p-MLKL were all detected in lung tissue of rats.
RESULTS
2
Compared with control group, PIF, PEF, MV and FEV
1
/FVC of model group were decreased significantly (
P
<0.05), while the levels of IL-1β, IL-6 and TNF-α were increased significantly (
P
<0.05); there was a large number of inflammatory cells infiltration in the lung tissue and bronchial wall thickening in model group; the apoptotic rate of pulmonary epithelial cells,mRNA expressions of RIPK1, RIPK3 and MLKL, protein expressions of RIPK1, RIPK3 and p-MLKL were increased significantly (
P
<0.05). Compared with model group, above indexes of rats were improved significantly in Wog low-dose and high-dose groups (
P
<0.05), and pathological injuries were alleviated significantly. The corresponding indexes of rats were worsened in rRIPK1 group (
P
<0.05), and pathological damage had further worsened. rRIPK1 significantly attenuated the inhibitory effect of high-dose Wog on airway inflammation and RIPK1/RIPK3/MLKL pathway in COPD rats (
P
<0.05).
CONCLUSIONS
2
Wog may improve airway inflammation in COPD rats by inhibiting RIPK1/RIPK3/MLKL signal pathway.
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