柴黄清胰活血颗粒对重症急性胰腺炎大鼠肾素-血管紧张素系统的影响

目的基于肾素-血管紧张素系统(RAS)探讨柴黄清胰活血颗粒(柴胡、生大黄、赤芍、白芍、厚朴等)对重症急性胰腺炎(SAP)大鼠的作用机制。方法将64只SD大鼠随机分为4组:假手术组、模型组、柴黄清胰活血颗粒组(4.42 g·kg^(-1))、卡托普利组(5 mg·kg^(-1)),各组再分为12、24 h两个亚组,每组8只。采用经胰胆管逆行注射3.5%牛磺胆酸钠复制SAP大鼠模型。卡托普利组腹腔注射给药;柴黄清胰活血颗粒组灌胃给药,每6 h灌胃1次。术后12、24 h采集标本,采用生化法检测血清淀粉酶(AMY)活性;HE染色法观察胰腺组织病理变化;化学发光法检测血清醛固酮(ALD)含量;ELISA法检测血清肾素(Renin)、血管紧张素转换酶(ACE)、血管紧张素Ⅱ(Ang-Ⅱ)含量;Western Blot法检测胰腺组织AT1R蛋白表达。结果在12、24 h同一亚组中,与假手术组比较,模型组大鼠的血清AMY活性均明显升高(P<0.05),胰腺组织病理评分明显升高(P<0.05),血清ALD、Renin、Ang-Ⅱ、ACE水平均明显上升(P<0.05),胰腺组织AT1R蛋白表达明显上调(P<0.05)。与模型组比较,柴黄清胰活血颗粒组、卡托普利组大鼠的血清AMY活性均明显下降(P<0.05),胰腺组织病理评分明显降低(P<0.05),血清ALD、Renin、Ang-Ⅱ、ACE水平均明显下降(P<0.05),胰腺组织AT1R蛋白表达明显下调(P<0.05)。与卡托普利组比较,柴黄清胰活血颗粒组大鼠的血清AMY活性均明显降低(P<0.05),胰腺组织病理评分明显降低(P<0.05),血清ALD、Renin、Ang-Ⅱ、ACE水平均明显下降(P<0.05)。结论柴黄清胰活血颗粒可能通过下调ACE-Ang-Ⅱ-AT1R经典轴的表达,抑制Renin、ALD的生成,从而发挥对SAP大鼠的保护作用。

Intervention effect and mechanism of Jisheng Shenqi Decoction plus Panax notoginseng and Bionjia on CCl4-induced hepatic fibrosis rat model

Objective:To investigate the intervention effect and specific mechanism of Jisheng Shenqi Decoction plus Panax notoginseng and Turmeric on carbon tetrachloride(CCl4)-induced liver fibrosis in rats.Methods:SPF SD rats were randomly divided into control group,model group,and Chinese medicine treatment(low,medium and high dose)groups.The model group and Chinese medicine treatment group were given intraperitoneal injection of 40%CCl4 olive oil solution twice a week.A rat model of liver fibrosis was replicated by the method for 8 weeks.After successful modeling,each drug-administered group was gavaged with corresponding drugs,and the control group and model group were gavaged with equal volume of distilled water,once a day,for 4 weeks.After the last intragastric administration,HE staining and Masson staining were used to observe the pathological morphology of liver tissue,and liver function(ALT,AST)was detected;ELISA method was used to determine transforming growth factorβ(TGF-β),angiotensin II(Ang-Ⅱ),chitinase 3-like protein 1(CHI3L1),interleukin-1(IL-1),interleukin-6(IL-6),tumor necrosis factor-α(TNF-α)content;The expression levels of type I,type III collagen(Col-Ⅰ,Col-Ⅲ)and TGF-βmRNA were determined by RT-PCR.Results:①HE and Masson staining showed that a large number of liver cells in the model group were inflamed and necrotic,the collagen fibers in the liver tissue were extensively proliferated,the fibrous septa were interconnected,and the pseudolobules were formed.Compared with the model group,the levels of ALT,AST,TGF-β,Ang-Ⅱ,CHI3L1,IL-1,IL-6 and TNF-αin the traditional Chinese medicine treatment group were decreased,while the levels of Col-Ⅰ,Col-ⅢThe expressions ofⅢand TGF-βmRNA were decreased,and the effect was most obvious in the middle and high dose groups of traditional Chinese medicine(P<0.01).Conclusion:Jisheng Shenqi Decoction combined with Panax notoginseng and Biejia can significantly improve liver fibrosis induced by CCl4 in rats,and its mechanism may be related to the down-regulation of angiotensin-converting enzyme(ACE)-angiotensin II(Ang-II)-angiotensin II receptor 1(AT1R)signaling pathway related gene expression,reducing the level of related cytokines,promoting the degradation of extracellular matrix and so on.

济生肾气汤加三七、鳖甲对CCl4诱导肝纤维化大鼠模型的干预作用及机制

目的:探讨济生肾气汤加三七、鳖甲对四氯化碳(CCl;)诱导的肝纤维化大鼠模型的干预作用及具体机制。方法:将SPF级SD大鼠随机分为对照组、模型组、中药治疗(低、中、高剂量)组,模型组与中药治疗组采用腹腔注射40%CCl4橄榄油溶液,每周2次,持续8周的方法复制肝纤维化大鼠模型。造模成功后,各给药组分别灌胃相应药物,对照组及模型组予等体积蒸馏水灌胃,每天1次,治疗4周。末次灌胃结束后,对肝组织切片进行HE染色和Masson染色观察肝组织病理形态学,检测肝功能指标(ALT、AST);ELISA法测定转化生长因子β(TGF-β)、血管紧张素Ⅱ(Ang-Ⅱ)、壳多糖酶3样蛋白1(CHI3L1)、白介素-1(IL-1)、白介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)含量;RT-PCR法测定Ⅰ型、Ⅲ型胶原蛋白(Col-Ⅰ、Col-Ⅲ)及TGF-βmRNA的表达水平。结果:HE和Masson染色显示模型组大鼠大量肝细胞炎症坏死,肝组织胶原纤维广泛增生,纤维间隔相互连接,假小叶形成,而中药各剂量治疗组大鼠的肝脏炎症及肝纤维化程度均较模型组减轻;与模型组比较,中药治疗组ALT、AST、TGF-β、Ang-Ⅱ、CHI3L1、IL-1、IL-6、TNF-α水平均下降,Col-Ⅰ、Col-Ⅲ、TGF-βmRNA表达均减少,其中以中药中、高剂量组效果最为明显(P<0.01)。结论:济生肾气汤加三七、鳖甲对CCL4诱导的大鼠肝纤维化具有明显的改善作用,其作用机制可能与下调血管紧张素转换酶(ACE)-血管紧张素Ⅱ(Ang-Ⅱ)-血管紧张素Ⅱ受体1(AT1R)信号通路相关基因表达,降低相关细胞因子水平、促进细胞外基质降解方面等有关。