[关键词]
[摘要]
目的 探讨中风星蒌通腑胶囊介导胆囊收缩素八肽 (CCK-8) 对白细胞介素 10 (IL-10) /信号转导与转录激 活子 3 (STAT3) 信号通路对脑出血小鼠的脑部炎症反应的调控作用及机制。方法 将 110 只 C57BL/6 小鼠按随 机数字表法分为假手术组、脑出血组及中风星蒌通腑胶囊低、中、高剂量组,每组 22 只。采用胶原酶法建立 脑出血模型,模型复制 2 h 后进行中风星蒌通腑胶囊混悬液灌胃 (10 mL·kg-1 ) ,假手术组与脑出血组灌以等量 的生理盐水。记录小鼠的神经功能学评分及左转率;于术后 72 h 采用干湿质量法检测脑含水量;于术后 72 h 采用 Western Blot 法检测小鼠血肿周围肿瘤坏死因子 α (TNF-α) 、白细胞介素 1β (IL-1β) 、白细胞介素 6 (IL-6) 、白细胞介素 10 (IL-10) 以及 Janus 激酶 1 (JAK-1) 、STAT3、磷酸化 STAT3 (p-STAT3) 通路蛋白的相对 表达水平;于术后第 3、5 天采用 Elisa 法检测小鼠 CCK-8 的相对表达水平;采用荧光定量 PCR (qPCR) 法检测 IL-10、STAT3 的 mRNA 的表达水平。结果 与脑出血组比较,中风星蒌通腑胶囊低、中、高剂量组干预治疗 后,第 3 天及第 5 天小鼠改良神经功能缺陷 (NDS) 评分明显降低 (P<0.01) ,低剂量组第 3 天及第 5 天左转率 降低 (P<0.05) ,中剂量组第 3 天 (P<0.05) 及第 5 天 (P<0.01) 左转率降低,高剂量组第 3 天及第 5 天左转率 明显降低 (P<0.01) 。低剂量组小鼠脑含水量减少 (P<0.05) ,中、高剂量组小鼠脑含水量明显减少 (P<0.01) 。 低剂量组促炎因子 TNF-α、IL-6 及 JAK-1、STAT3、p-STAT3 通路蛋白的表达均明显减少 (P<0.01) ,IL-1β 表达减少 (P<0.05) ,抑炎因子 IL-10 表达明显增加 (P<0.01) ;中、高剂量组促炎因子 TNF-α、IL-1β、IL-6 及 JAK-1、STAT3、p-STAT3 通路蛋白的表达均明显减少 (P<0.01) ,抑炎因子 IL-10 表达明显增加 (P<0.01) 。 低剂量组 CCK-8 的含量在用药后第 3 天增加 (P<0.05) ,第 5 天含量明显增加 (P<0.01) ;中、高剂量组 CCK-8 的含量在用药后第 3 天及第 5 天明显增加 (P<0.01) 。IL-10 的 mRNA 相对表达水平在用药后均明显增高 (P< 0.01) ,STAT3 mRNA 相对表达水平在用药后均明显降低 (P<0.01) 。结论 中风星蒌通腑胶囊可以增加脑肠肽CCK-8 的表达,调控 IL-10/STAT3 信号通路,从而减轻小鼠脑出血后的继发性炎症反应及细胞毒性脑水肿。
[Key word]
[Abstract]
Objective To explore the regulatory effect and mechanism of Zhongfeng Xinglou Tongfu Capsule on the brain inflammatory response of mice with cerebral hemorrhage through cholecystokinin octapeptide (CCK-8) mediated the interleukin 10 (IL-10)/signal transduction and transcriptional activator 3 (STAT3) signaling pathway. Methods A total of 110 C57BL/6 mice were divided into sham operation group,cerebral hemorrhage group,Zhongfeng Xinglou Tongfu Capsule low-,medium-,and high- dose groups according to the random number table method, with 22 mice in each group. The intracerebral hemorrhage model was established by collagenase method. At 2 hours after the establishment of the model,Zhongfeng Xinglou Tongfu Capsule suspension was intragastrically administered at a dose of 10 mL·kg-1 . The sham operation group and the cerebral hemorrhage group were intragastrically administered with the same dose of normal saline. The neurofunctional score and left-turn rate of the mice were recorded. The dry and wet weight method was used to detect brain water content on the 72 h after surgery,and the Western Blot method was used to detect tumor necrosis factor-α(TNF-α),interleukin 1β (IL-1β),interleukin 6 (IL-6),interleukin 10 (IL-10),and the relative expression levels of JAK-1,STAT3, and p-STAT3 pathway proteins around the hematoma of mice at 72 h after surgery. On the 3rd and 5th day after surgery,Elisa method was used to detect the relative expression level of CCK-8,qPCR method was used to detect the expression levels of IL-10 and STAT3 mRNA. Results Compared with the cerebral hemorrhage group,the NDS scores of mice in the low- , medium- , and high- dose groups of Zhongfeng Xinglou Tongfu Capsules were significantly reduced on the 3rd and 5th days after intervention treatment(P<0.01). And the left-turn rate in the low-dose group on the 3rd and 5th days after intervention treatment was reduced (P<0.05),the left-turn rate in the medium-dose group was reduced on the 3rd day (P<0.05) and the 5th day (P<0.01). Furthermore,the left-turn rate was obviously reduced on the 3rd and 5th day in the high-dose group (P<0.01). The brain water content of mice in the low-dose group was reduced(P<0.05),and the brain water content of mice in the medium- and high- dose groups was significantly reduced (P<0.01). In the low-dose group,the expressions of pro- inflammatory factors TNF-α,IL-6 and JAK-1,STAT3,and p-STAT3 pathway proteins were significantly reduced (P<0.01),while the expression of IL-1β was reduced(P<0.05),the expression of IL-10 increased significantly (P<0.01). The expression of pro-inflammatory factors TNF-α,IL-1β,IL-6,as well as JAK-1,STAT3,and p-STAT3 pathway proteins in the medium- and high- dose groups was significantly reduced (P<0.01),the expression of anti-inflammatory factor IL-10 increased significantly(P<0.01). The content of CCK-8 in the low- dose group was increased on the 3rd day after treatment(P<0.05),and the content increased significantly on the 5th day(P<0.01). The content of CCK-8 in the medium- and high- dose groups obviously increased on the 3rd and the 5th day after treatment (P<0.01). The relative expression level of IL-10 mRNA was significantly increased after treatment(P<0.01),but the relative expression level of STAT3 mRNA was significantly decreased after treatment (P<0.01). Conclusion Zhongfeng Xinglou Tongfu Capsule can target the content of brain-gut peptide CCK-8 and regulate the IL-10/STAT3 signaling pathway to reduce the secondary inflammatory reaction and cytotoxic brain edema after cerebral hemorrhage.
[中图分类号]
R285.5
[基金项目]
“十四五”国家重点研发计划“中医药现代化研究”重点专项 (2022YFC3501103);河南省中医药管理局基金资助项目 (2022ZY1009); 河南省高等学校重点科研基金资助项目 (22A320037);河南省中医药管理局基金资助项目 (2024ZY1007)