解毒化瘀颗粒对急性肝衰竭小鼠肝损伤的调控作用及机制分析
DOI: 10.12449/JCH260117
Regulatory effect of Jiedu Huayu granules on liver injury in mice with acute liver failure and its mechanism
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摘要:
目的 通过观察解毒化瘀颗粒对急性肝衰竭(ALF)小鼠模型的影响,以预防性给药方式,探究该方改善ALF小鼠肝损伤的作用机制,以期为临床用药提供依据。 方法 将60只雄性SPF级C57BL/6J小鼠按随机数字表随机分为对照组、模型组、解毒化瘀颗粒组(JDHY组)和法尼醇X受体(FXR)激动剂(GW4064)组,每组各15只。采用D-氨基半乳糖联合脂多糖一次性腹腔注射诱导建立ALF模型,JDHY组小鼠在造模前3天预防性给予0.3 g/mL解毒化瘀颗粒中药液灌胃,对照组、模型组小鼠予以0.9% NaCl溶液灌胃,GW4064组在造模前3天连续予以腹腔注射GW4064。造模完成后,处死小鼠,并对小鼠血清、肝组织进行收集;采用兽用全自动生化分析仪测定各组小鼠血清总胆红素(TBil)、总胆汁酸(TBA)、γ-谷氨酰转移酶(GGT)、丙氨酸氨基转移酶(ALT)和天冬氨酸氨基转移酶(AST)水平;苏木精-伊红(HE)染色法观察小鼠肝脏的病理学变化;运用逆转录PCR检测各组小鼠FXR、成纤维细胞生长因子15(FGF15)、成纤维细胞生长因子受体4(FGFR4)、小异二聚体伴侣(SHP)和胆盐输出泵(BSEP)的mRNA表达;蛋白免疫印迹法检测各组小鼠FXR、FGF15、FGFR4、SHP和BSEP的蛋白表达情况。组间比较采用One-way ANOVA方差分析,进一步的组间两两比较用Dunett法。 结果 与对照组相比,模型组小鼠血清TBil、ALT、AST、TBA、GGT表达水平均明显升高(P值均<0.01);与模型组相比,JDHY组、GW4064组小鼠血清TBil、ALT、AST、TBA、GGT的表达水平均明显降低(P值均<0.01)。HE染色结果显示,与模型组相比,JDHY组、GW4064组的病理损伤较轻,肝细胞坏死面积减少,细胞肿胀、水肿程度明显减轻。与对照组相比,模型组小鼠肝组织中FXR、FGF15、FGFR4、SHP和BSEP的mRNA及蛋白表达水平均显著降低(P值均<0.01);与模型组相比,JDHY组、GW4064组小鼠肝组织中FXR、FGF15、FGFR4、SHP、BSEP的mRNA及蛋白表达水平均明显升高(P值均<0.05)。 结论 解毒化瘀颗粒可能通过FXR/SHP轴调控ALF小鼠的肝损伤。 Abstract:Objective To investigate the mechanism of action of Jiedu Huayu granules in improving liver injury in mice with acute liver failure (ALF) by observing its effect on a mouse model of ALF after prophylactic administration, and to provide a basis for clinical medication. Methods A total of 60 specific pathogen-free male C57BL/6J mice were divided into normal group, model group, Jiedu Huayu granules group (JDHY group), and farnesoid X receptor (FXR) agonist (GW4064) group using a random number table, with 15 mice in each group. The model of ALF was induced by a single intraperitoneal injection of D-galactosamine combined with lipopolysaccharide. The mice in the JDHY group were given prophylactic administration of 0.3 g/mL drug solution of Jiedu Huayu granules by gavage for 3 days before modeling, those in the normal group and the model group were given 0.9% NaCl solution by gavage, and those in the GW4064 group were given intraperitoneal injection of GW4064 for 3 consecutive days before modeling. The mice were sacrificed after modeling, and serum and liver tissue samples were collected. A veterinary automatic biochemical analyzer was used to measure the serum levels of total bilirubin (TBil), total bile acids (TBA), gamma-glutamyl transferase (GGT), alanine aminotransferase (ALT), and aspartate aminotransferase (AST) in mice from each group; HE staining was used to observe liver pathological changes; RT-PCR was used to measure the mRNA expression levels of FXR, fibroblast growth factor 15 (FGF15), fibroblast growth factor receptor 4 (FGFR4), small heterodimer partner (SHP), and bile salt export pump (BSEP) in mice, and Western blot was used to measure the protein expression levels of FXR, FGF15, FGFR4, SHP, and BSEP. A one-way analysis of variance was used for comparison between groups, and the Dunett method was used for further comparison between two groups. Results Compared with the normal group, the model group had significant increases in the serum levels of TBil, ALT, AST, TBA, and GGT (all P<0.01), and compared with the model group, the JDHY group and the GW4064 group had significant reductions in the serum levels of TBil, ALT, AST, TBA, and GGT (all P <0.01). HE staining showed that compared with the model group, the JDHY group and the GW4064 group had milder pathological injury, a reduction in the area of hepatocyte necrosis, and alleviation of cellular swelling and edema. Compared with the normal group, the model group had significant reductions in the mRNA and protein expression levels of FXR, FGF15, FGFR4, SHP, and BSEP in liver tissue (all P <0.01), and compared with the model group, the JDHY group and the GW4064 group had significant increases in the mRNA and protein expression levels of FXR, FGF15, FGFR4, SHP, and BSEP in liver tissue (all P <0.05). Conclusion Jiedu Huayu granules may alleviate liver injury in mice with ALF through the FXR/SHP axis. -
Key words:
- Jiedu Huayu Granules /
- Liver Failure,Acute /
- Bile Acid Metabolism
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表 1 引物序列
Table 1. Primer sequences
基因 引物序列 长度(bp) FXR 上游:CTAATGAGGACGACAGCGAAGG
下游:CCTGAGGCATTCTCTGTTTGTTGTA147 FGF15 上游:GAAGACGATTGCCATCAAGGAC
下游:TCCTCCGAGTAGCGAATCAGC93 FGFR4 上游:CTACCCACAGCAAGCACCCTA
下游:CCGAATGCCTCCAATACGAT181 SHP 上游:ATCCTCTTCAACCCAGATGTGC
下游:GCCTGGAATGTTCTTGAGGGTAG171 BSEP 上游:AGTCAATGTTCAGTTCCTCCGTT
下游:GCAATAGCAATGCGTTGTTTC252 β-actin 上游:CCTCGTCCCGTAGACAAAATG
下游:TGAGGTCAATGAAGGGGTCGT133 注:FXR,法尼醇X受体;FGF15,成纤维细胞生长因子15;FGFR4,成纤维细胞生长因子受体4;SHP,小异二聚体伴侣;BSEP,胆盐输出泵;β-actin,β-肌动蛋白。
表 2 目的蛋白灰度值/内参灰度值
Table 2. Target protein gray value / internal reference gray value
指标 例数 FXR SHP FGF15 FGFR4 BSEP 正常组 15 1.20±0.071) 0.95±0.051) 0.90±0.241) 0.90±0.131) 1.16±0.121) 模型组 11 0.65±0.18 0.58±0.09 0.37±0.10 0.50±0.06 0.52±0.09 JDHY组 13 0.89±0.181) 0.82±0.261) 0.49±0.071) 0.72±0.121) 0.71±0.051) GW4064组 14 1.01±0.231) 0.90±0.101) 0.58±0.151) 0.83±0.161) 0.73±0.051) F值 22.45 20.32 22.39 26.78 135.67 P值 <0.01 <0.01 <0.01 <0.01 <0.01 注:与模型组比较,1)P<0.01。FXR,法尼醇X受体;SHP,小异二聚体伴侣;FGF15,成纤维细胞生长因子15;FGFR4,成纤维细胞生长因子受体4;BSEP,胆盐输出泵。
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