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1.大理大学基础医学院,云南大理,671003
2.大理大学临床医学院,云南大理,671003
3.大理大学第一附属医院超声科,云南大理,671013
CHENG Jiamao; E-mail: chjmao@163.com
Published:20 January 2024,
Received:25 September 2023,
Accepted:01 December 2023
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杨柳青,范钦,白雅洁等.铁皮石斛多糖通过上皮-间质转化抗肝纤维化[J].中山大学学报(医学科学版),2024,45(01):76-84.
YANG Liuqing,FAN Qin,BAI Yajie,et al.Dendrobium Officinale Polysaccharide Alleviates Hepatic Fibrosis via Epithelial-Mesenchymal Transition[J].Journal of Sun Yat-sen University(Medical Sciences),2024,45(01):76-84.
杨柳青,范钦,白雅洁等.铁皮石斛多糖通过上皮-间质转化抗肝纤维化[J].中山大学学报(医学科学版),2024,45(01):76-84. DOI: 10.13471/j.cnki.j.sun.yat-sen.univ(med.sci).20240004.011.
YANG Liuqing,FAN Qin,BAI Yajie,et al.Dendrobium Officinale Polysaccharide Alleviates Hepatic Fibrosis via Epithelial-Mesenchymal Transition[J].Journal of Sun Yat-sen University(Medical Sciences),2024,45(01):76-84. DOI: 10.13471/j.cnki.j.sun.yat-sen.univ(med.sci).20240004.011.
目的
2
探讨铁皮石斛多糖(DOP)对CCl
4
诱导肝纤维化(HF)的影响及其作用机制。
方法
2
将56 只雄性SD 大鼠随机分为七组:正常组(NG)、模型组(MG)、秋水仙碱组(CG, 0.1mg/ kg)、扶正化瘀组(FG, 0.45g/kg)、低剂量DOP 组(LDG, 0.05 g/kg)、中剂量DOP 组(MDG, 0.1 g/kg)和高剂量DOP 组(HDG,0.2 g/kg),每组8 只。采用皮下注射40% CCl
4
橄榄油混合液制备HF 大鼠模型,每3 d 注射1次,共10周。造模第6周结束后,各药物组分别给予秋水仙碱、扶正化瘀和DOP 溶液灌胃处理,NG 和MG 大鼠给予等量0.9 % 生理盐水处理,每天1次,连续4周。各组大鼠肝组织病理学采用苏木精-伊红(HE)、Masson 染色、天狼星红(Sirius red)染色检测;肝功能和肝纤四项指标采用血液生化法检测;肝组织中α-SMA、Col-I、E-cadherin、ZEB1 基因和蛋白的表达分别采用RT-qPCR 法和Western Blot 法检测。
结果
2
HE、Masson、Sirius red 染色结果显示MG 大鼠肝脏组织出现典型的HF 病理特征,LDG、MDG 和HDG 大鼠HF 均出现不同程度改善。肝功能检测结果显示,LDG、MDG、HDG 大鼠的血清AST、TBIL、AKP 水平与MG 相比均显著降低(
P
<
0.05或
<
0.01),血清ALT 水平除LDG 外均显著降低(
P
<
0.05或
<
0.01)。肝纤四项指标检测结果显示,LDG、MDG、HDG 大鼠的血清HA、LN、PC-Ⅲ、COL-Ⅳ 含量与MG 比较均明显下降(
P
<
0.05或
<
0.01)。基因、蛋白检测结果显示,LDG、MDG、HDG 大鼠肝组织中α-SMA、COL-I、ZEB1 的相对表达量明显降低(
P
<
0.05或
<
0.01),而E-cadherin 的相对表达量升高(
P
<
0.05或
<
0.01)。此外,HA、α-SMA、COL-I、ZEB1、E-cadherin 的表达均存在一定的DOP 剂量依赖性。
结论
2
DOP 可通过抑制大鼠肝组织的上皮-间质转化减轻CCl
4
诱导的HF 程度。
Objective
2
To investigate the effect of
Dendrobium officinale
polysaccharide (DOP)on CCl
4
-induced hepatic fibrosis(HF)and its mechanism.
Methods
2
A total of 56 male SD rats were randomly divided into seven groups: normal group(NG),model group(MG),colchicine group(CG, 0.1 mg/kg), Fuzheng Huayu group(FG, 0.45 g/kg),low-dose DOP group(LDG, 0.05 g/kg),middle-dose DOP group(MDG, 0.1 g/kg)and high-dose DOP group(HDG,0.2 g/kg),with 8 rats in each group. HF rat model was established by subcutaneous injection with 40% CCl
4
olive oil mixture, every 3-day for 10 weeks. At the end of the sixth week, the drug groups were treated with colchicine, Fuzheng Huayu and DOP solution by gavage respectively, once a day for 4 weeks. NG and MG groups were similarly handled with an equal amount of 0.9 % normal saline. Liver histopathology was detected using hematoxylin-eosin (HE), Masson and Sirius red staining; blood biochemistry was tested for liver function and four indicators of HF; RT-qPCR and Western Blot were used to measure the expression of α-SMA, Col-I, E-cadherin, and ZEB1 genes and proteins in the liver tissues of rats, respectively.
Results
2
HE, Masson, and Sirius red staining showed that the liver tissue of MG rats had typical pathologic features of HF, and the degree of HF was alleviated in LDG, MDG, and HDG rats, respectively. Liver function test results showed that the serum AST, TBIL, and AKP levels were significantly lower in LDG, MDG, and HDG, compared with those of the MG (
P
<
0.05 or
<
0.01). Meanwhile, ALT levels in serum deceased remarkably except in LDG (
P
<
0.05 or
<
0.01). The four results of HF showed that the serum HA, LN, PC-Ⅲ, and COL-Ⅳ levels in LDG, MDG, and HDG rats were significantly decreased compared with those of the MG (
P
<
0.05 or
<
0.01). The relative expressions of α-SMA, COL-I, and ZEB1 genes and proteins were significantly decreased in the liver tissues of LDG, MDG, and HDG
(P
<
0.05 or
<
0.01), and the relative expression of E-cadherin gene and protein increased
(P
<
0.05 or
<
0.01). In addition, the expressions of HA, α-SMA, COL-I, ZEB1 and E-cadherin were dependent on the dose of DOP.
Conclusion
2
DOP alleviated the degree of CCl
4
induced HF in rats by inhibiting the epithelial-mesenchymal transition in liver tissue.
肝纤维化铁皮石斛多糖上皮-间质转化E-钙黏蛋白锌指E盒结合同源框1
hepatic fibrosisdendrobium officinale polysaccharideepithelial-mesenchymal transitionE-cadherinZinc finger E-box binding homeobox 1
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