[目的]研究参芪泄浊饮对腺嘌呤致大鼠慢性肾衰肾组织基质金属蛋白酶1(MMP-1)、基质金属蛋白酶抑制剂1(TIMP-1)基因表达的影响。[方法]SPF级雄性SD大鼠54只,采用Yokozawa法复制慢性肾衰大鼠模型,随机分为参芪泄浊饮高剂量组、参芪泄浊饮...[目的]研究参芪泄浊饮对腺嘌呤致大鼠慢性肾衰肾组织基质金属蛋白酶1(MMP-1)、基质金属蛋白酶抑制剂1(TIMP-1)基因表达的影响。[方法]SPF级雄性SD大鼠54只,采用Yokozawa法复制慢性肾衰大鼠模型,随机分为参芪泄浊饮高剂量组、参芪泄浊饮常规剂量组、氯沙坦组、模型组,分别予高剂量组、常规剂量组、氯沙坦组以参芪泄浊饮水煎液20m L/kg·d、10m L/kg·d、氯沙坦组9mg/kg·d,模型组与空白组大鼠均予纯净水10m L/kg·d,连续灌胃干预8周,ELISA法测量血肌酐(Scr)、尿素氮(BUN)、丙氨酸转氨酶(ALT);荧光定量PCR方法检测肾组织中MMP-1、TIMP-1。[结果]1Scr、BUN各组大鼠较空白组均有升高(P<0.05),氯沙坦组明显低于模型组(P<0.05);Scr高剂量组大鼠明显低于常规剂量组、氯沙坦组及模型组大鼠(P<0.05),常规剂量组与氯沙坦组亦低于模型组(P<0.05);BUN变化趋势与Scr相同,高剂量组降低不明显(P>0.05)。2MMP-1 m RNA各组均高于空白组(P<0.05),高剂量组显著高于常规剂量组、氯沙坦组及模型组(P<0.05),常规剂量组与氯沙坦组也显著高于模型组(P<0.05);TIMP-1 m RNA各组均高于空白组(P<0.05),高剂量组明显低于常规剂量组、氯沙坦组及模型组(P<0.05),常规剂量组与氯沙坦组明显低于模型组(P<0.05)。[结论]参芪泄浊饮可通过促进MMP-1 m RNA及抑制TIMP-1 m RNA表达,使细胞外基质(extracellular matrix,ECM)的降解增加,堆积减少,进而减缓CRF的进一步发展,保护肾脏。展开更多
The purpose of this study was to explore the protective effect of Dendrobium officinale polysaccharides （DOP） onphotoaging human skin fibroblasts and its specific mechanism of action. The photoaging fibroblast model...The purpose of this study was to explore the protective effect of Dendrobium officinale polysaccharides （DOP） onphotoaging human skin fibroblasts and its specific mechanism of action. The photoaging fibroblast model wasestablished by ultraviolet B （UVB） irradiation. The toxic effects of different concentrations of DOP were detected usingMTT. Senescent cells were detected using a β-galactosidase kit. Reactive oxygen species （ROS） in cells were detectedusing a flow cytometer. The expression of matrix metalloproteinase-1 （MMP-1）, type I collagen C-terminal peptide（CICP）, and transforming growth factor β-1 （TGF-β1） in spent culture medium was detected by ELISA. The resultsshowed that the low concentration of DOP （20, 40, 80 μg/mL） had no cytotoxicity on fibroblasts. After 60 mJ/cm2UVBirradiation, the number of aging β-gal-positive cells increased, the levels of CICP and TGF-β1 in spent culture mediumdecreased, while the levels of MMP-1 and ROS increased. After administration of DOP on photoaging fibroblasts, thenumber of aging β-gal-positive cells decreased, the levels of ROS and MMP-1 decreased, and the levels of TGF-β1 andCICP increased. This experiment suggests that DOP has the effect of removing ROS induced by UVB, regulating thebalance of collagen production and degradation, and protecting photoaging human skin fibroblasts.展开更多
目的：探讨杜仲多糖治疗肝纤维化（HF）作用,并探讨其相关的作用机制。方法：将60只健康SD大鼠随机分成2组,正常组（10只）和肝纤维化造模组（50只）。造模组采用40%四氯化碳（CCl4）腹腔注射制备HF动物模型,造模成功后将其随机分为5个...目的：探讨杜仲多糖治疗肝纤维化（HF）作用,并探讨其相关的作用机制。方法：将60只健康SD大鼠随机分成2组,正常组（10只）和肝纤维化造模组（50只）。造模组采用40%四氯化碳（CCl4）腹腔注射制备HF动物模型,造模成功后将其随机分为5个组,分别为模型组,杜仲多糖高、中、低剂量组及秋水仙碱组每组10只。秋水仙碱组（1.0×10^-4g·kg^-1）,杜仲多糖高、中、低剂量组（0.14,0.07,0.035 g·kg^-1）分别连续灌胃给药8周后收集样本,测定法大鼠体质量及计算肝脏系数;采用酶联免疫吸附测定（ELISA）检测血清白细胞介素-6（IL-6）,高迁移率族蛋白B1（high-mobility group box 1,HMGB1）,脂多糖（LPS）,肝组织基质金属蛋白酶-1（MMP-1）和金属蛋白酶组织抑制因子-1（TIMP-1）水平;逆转录聚合酶链式反应（RT-PCR）技术分析各组大鼠肝组织Ⅰ,Ⅲ型胶原蛋白,MMP-1,TIMP-1及转化生长因子-β1（TGF-β1）mRNA表达情况。结果：与正常组比较,CCl4能显著降低实验大鼠体质量（P〈0.01）,提高肝脏系数（P〈0.01）;杜仲多糖能显著增加HF模型的体质量（P〈0.01）,显著降低HF模型肝脏系数（P〈0.01）;ELISA检测表明,杜仲多糖能显著降低肝纤维化大鼠血清IL-6,HMGB1及LPS含量（P〈0.01）;RT-PCR检测结果显示,杜仲多糖及秋水仙碱能显著降低HF肝脏中Ⅰ,Ⅲ型胶原蛋白,TIMP-1及TGF-β1mRNA含量（P〈0.05）,明显提高MMP-1含量（P〈0.05,P〈0.01）,且呈量效关系。结论：杜仲多糖具有显著的抗肝纤维化作用,其作用机制可能与抑制降低HF肝脏中Ⅰ,Ⅲ型胶原蛋白,TIMP-1及TGF-β1mRNA表达有关。展开更多
文摘[目的]研究参芪泄浊饮对腺嘌呤致大鼠慢性肾衰肾组织基质金属蛋白酶1(MMP-1)、基质金属蛋白酶抑制剂1(TIMP-1)基因表达的影响。[方法]SPF级雄性SD大鼠54只,采用Yokozawa法复制慢性肾衰大鼠模型,随机分为参芪泄浊饮高剂量组、参芪泄浊饮常规剂量组、氯沙坦组、模型组,分别予高剂量组、常规剂量组、氯沙坦组以参芪泄浊饮水煎液20m L/kg·d、10m L/kg·d、氯沙坦组9mg/kg·d,模型组与空白组大鼠均予纯净水10m L/kg·d,连续灌胃干预8周,ELISA法测量血肌酐(Scr)、尿素氮(BUN)、丙氨酸转氨酶(ALT);荧光定量PCR方法检测肾组织中MMP-1、TIMP-1。[结果]1Scr、BUN各组大鼠较空白组均有升高(P<0.05),氯沙坦组明显低于模型组(P<0.05);Scr高剂量组大鼠明显低于常规剂量组、氯沙坦组及模型组大鼠(P<0.05),常规剂量组与氯沙坦组亦低于模型组(P<0.05);BUN变化趋势与Scr相同,高剂量组降低不明显(P>0.05)。2MMP-1 m RNA各组均高于空白组(P<0.05),高剂量组显著高于常规剂量组、氯沙坦组及模型组(P<0.05),常规剂量组与氯沙坦组也显著高于模型组(P<0.05);TIMP-1 m RNA各组均高于空白组(P<0.05),高剂量组明显低于常规剂量组、氯沙坦组及模型组(P<0.05),常规剂量组与氯沙坦组明显低于模型组(P<0.05)。[结论]参芪泄浊饮可通过促进MMP-1 m RNA及抑制TIMP-1 m RNA表达,使细胞外基质(extracellular matrix,ECM)的降解增加,堆积减少,进而减缓CRF的进一步发展,保护肾脏。
文摘The purpose of this study was to explore the protective effect of Dendrobium officinale polysaccharides （DOP） onphotoaging human skin fibroblasts and its specific mechanism of action. The photoaging fibroblast model wasestablished by ultraviolet B （UVB） irradiation. The toxic effects of different concentrations of DOP were detected usingMTT. Senescent cells were detected using a β-galactosidase kit. Reactive oxygen species （ROS） in cells were detectedusing a flow cytometer. The expression of matrix metalloproteinase-1 （MMP-1）, type I collagen C-terminal peptide（CICP）, and transforming growth factor β-1 （TGF-β1） in spent culture medium was detected by ELISA. The resultsshowed that the low concentration of DOP （20, 40, 80 μg/mL） had no cytotoxicity on fibroblasts. After 60 mJ/cm2UVBirradiation, the number of aging β-gal-positive cells increased, the levels of CICP and TGF-β1 in spent culture mediumdecreased, while the levels of MMP-1 and ROS increased. After administration of DOP on photoaging fibroblasts, thenumber of aging β-gal-positive cells decreased, the levels of ROS and MMP-1 decreased, and the levels of TGF-β1 andCICP increased. This experiment suggests that DOP has the effect of removing ROS induced by UVB, regulating thebalance of collagen production and degradation, and protecting photoaging human skin fibroblasts.
文摘目的：探讨杜仲多糖治疗肝纤维化（HF）作用,并探讨其相关的作用机制。方法：将60只健康SD大鼠随机分成2组,正常组（10只）和肝纤维化造模组（50只）。造模组采用40%四氯化碳（CCl4）腹腔注射制备HF动物模型,造模成功后将其随机分为5个组,分别为模型组,杜仲多糖高、中、低剂量组及秋水仙碱组每组10只。秋水仙碱组（1.0×10^-4g·kg^-1）,杜仲多糖高、中、低剂量组（0.14,0.07,0.035 g·kg^-1）分别连续灌胃给药8周后收集样本,测定法大鼠体质量及计算肝脏系数;采用酶联免疫吸附测定（ELISA）检测血清白细胞介素-6（IL-6）,高迁移率族蛋白B1（high-mobility group box 1,HMGB1）,脂多糖（LPS）,肝组织基质金属蛋白酶-1（MMP-1）和金属蛋白酶组织抑制因子-1（TIMP-1）水平;逆转录聚合酶链式反应（RT-PCR）技术分析各组大鼠肝组织Ⅰ,Ⅲ型胶原蛋白,MMP-1,TIMP-1及转化生长因子-β1（TGF-β1）mRNA表达情况。结果：与正常组比较,CCl4能显著降低实验大鼠体质量（P〈0.01）,提高肝脏系数（P〈0.01）;杜仲多糖能显著增加HF模型的体质量（P〈0.01）,显著降低HF模型肝脏系数（P〈0.01）;ELISA检测表明,杜仲多糖能显著降低肝纤维化大鼠血清IL-6,HMGB1及LPS含量（P〈0.01）;RT-PCR检测结果显示,杜仲多糖及秋水仙碱能显著降低HF肝脏中Ⅰ,Ⅲ型胶原蛋白,TIMP-1及TGF-β1mRNA含量（P〈0.05）,明显提高MMP-1含量（P〈0.05,P〈0.01）,且呈量效关系。结论：杜仲多糖具有显著的抗肝纤维化作用,其作用机制可能与抑制降低HF肝脏中Ⅰ,Ⅲ型胶原蛋白,TIMP-1及TGF-β1mRNA表达有关。
