小鼠乳腺炎的模型建立及乳痈汤改善小鼠乳腺炎的机制研究
周云越 , 杨金彪 , 陈星彤 , 王乔 , 薛爽 , 牛雯颖 , 王宽宇
长春中医药大学学报 ›› 2026, Vol. 42 ›› Issue (02) : 179 -186.
小鼠乳腺炎的模型建立及乳痈汤改善小鼠乳腺炎的机制研究
Establishment of a mouse mastitis model and study on the mechanism of Ruyong Decoction in improving mouse mastitis
目的 研究探讨小鼠乳腺炎模型的建立方法及乳痈汤改善脂多糖(LPS)诱导的小鼠乳腺炎机制研究。 方法 通过网络药理学预测乳痈汤治疗乳腺炎的作用机制。取24只产后4 d的SPF级雌性昆明小鼠,确定LPS的最佳造模剂量和时间。根据最佳造模剂量和时间,取产后4 d的SPF级雌性昆明小鼠36只,随机分为空白对照组、模型组、地塞米松组(5 mg·kg-1)、乳痈汤低剂量组(6 g·kg-1)、乳痈汤中剂量组(12 g·kg-1)、乳痈汤高剂量组(24 g·kg-1),各6只。除空白对照组外,其余各组进行乳腺炎造模。造模结束2 h后,各组灌胃相应药物或生理盐水,连续给药7 d。取材后,苏木素-伊红(HE)染色观察乳腺组织的病理变化,酶联免疫吸附测定法检测血清中TNF-α、IL-1β、IL-6水平,免疫荧光染色和蛋白免疫印迹法检测乳腺组织中Wnt3a、β-catenin蛋白表达水平。 结果 通过HE染色确定了LPS的最佳造模剂量为10 μg,最佳造模时间为6 d;与模型组比较,乳痈汤各剂量组乳腺腺泡结构有明显改善,乳腺腺泡及腺泡间质中炎性细胞明显减少,血清中TNF-α、IL-1β、IL-6水平明显降低,乳腺组织中Wnt3a、β-catenin表达水平均明显降低。 结论 乳痈汤可能通过抑制Wnt/β-catenin信号通路的激活来改善LPS诱导的小鼠乳腺炎。
Objective To explore the establishment method of mouse mastitis model and the mechanism of Ruyong Decoction in improving lipopolysaccharide (LPS)-induced mastitis in mice. Methods The mechanism of action of Ruyong Decoction in treating mastitis through network pharmacology was predicted. 24 SPF-grade female Kunming mice at 4 days postpartum were selected to determine the optimal modeling dose and time of LPS. According to the optimal modeling dose and time, 36 SPF-grade female Kunming mice at 4 days postpartum were selected and randomly divided into the blank control group, the model group, the dexamethasone (5 mg·kg-1) group, the low-dose Ruyong Decoction (6 g·kg-1) group, the medium-dose Ruyong Decoction (12 g·kg-1) group, and high-dose Ruyong Decoction (24 g·kg-1) group, with 6 mice in each group. Except for the blank control group, the other groups underwent mastitis modeling. Two hours after the completion of modeling, each group was administered the corresponding drug or normal saline by gavage for 7 consecutive days. After sampling, hematoxylin-eosin (HE) staining was used to observe pathological changes in mammary tissue; ELISA was used to detect serum levels of tumor necrosis factor (TNF-α), interleukin (IL)-1β, and IL-6; and immunofluorescence staining and Western blotting were used to measure the protein expression levels of Wnt3a and β -catenin in mammary tissue. Results HE staining identified the optimal LPS modeling dose to be 10 μg and the optimal modeling time to be 6 days. Compared with the model group, all Ruyong Decoction groups showed significant improvement in mammary acinar structure, marked reduction of inflammatory cells in mammary acini and interacinar stroma, decreased serum levels of TNF-α, IL-1β and IL-6, and notably reduced expression levels of Wnt3a and β-catenin in mammary tissue. Conclusion Ruyong Decoction may ameliorate LPS-induced mastitis in mice by inhibiting the activation of the Wnt/β-catenin signaling pathway.
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黑龙江省卫生健康委科研课题(20220404010995)
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