目的探究竹沥对肝纤维化小鼠Ras同源基因-Rho相关螺旋卷曲蛋白激酶(Ras homologousgene-Rho-associatedcoiled-coilcontainingkinases,Rho-ROCK)信号转导通路的作用,分析竹沥抗肝纤维化的分子机制。方法将40只KM小鼠随机分为空白组、模...目的探究竹沥对肝纤维化小鼠Ras同源基因-Rho相关螺旋卷曲蛋白激酶(Ras homologousgene-Rho-associatedcoiled-coilcontainingkinases,Rho-ROCK)信号转导通路的作用,分析竹沥抗肝纤维化的分子机制。方法将40只KM小鼠随机分为空白组、模型组、竹沥组和丹参酚酸B组,每组10只,模型组、竹沥组和丹参酚酸B组小鼠给予40%CCl4花生油混合液(剂量2μl/g),空白组给予等量生理盐水,腹腔注射,2次/周,连续8周。模型构建成功后,竹沥组以竹沥灌胃,每日1次,每次30 ml/100 g;丹参酚酸B组以丹参酚酸B溶液灌胃,每日1次,每次用量0.25 mg/100 g;其余2组给予等量生理盐水灌胃,持续4周。末次给药后对小鼠眼球取血并处死,采用HE染色观察肝组织病理并进行Ishak评分,采用γ放射免疫全自动双探头计数器检测肝纤维化指标,包括透明质酸、层粘连蛋白、Ⅲ型前胶原和Ⅳ型胶原,采用实时荧光定量聚合酶链式反应(real-time quantitative polymerase chain reaction,q RT-PCR)检测Rho A和ROCK2m RNA的相对表达量,采用Western blot检测Rho A和ROCK2蛋白的相对表达量。结果空白组、模型组、竹沥组和丹参酚酸B组小鼠Ishak评分分别为(0.40±0.05)分、(4.80±0.84)分、(3.20±0.45)分和(2.80±0.83)分,差异有统计学意义(F=34.807,P<0.001),其中空白组显著低于模型组、竹沥组和丹参酚酸B组(t=8.690,P<0.001;t=5.674,P<0.001;t=4.768,P=0.001),模型组显著高于竹沥组和丹参酚酸B组(t=3.016,P=0.017;t=3.922,P=0.004),竹沥组和丹参酚酸B组差异无统计学意义(t=0.809,P=0.464)。空白组小鼠肝纤维化指标均显著低于模型组、竹沥组和丹参酚酸B组[透明质酸:(26.14±2.69)μg/L vs(53.69±5.87)μg/L vs(37.21±3.04)μg/L vs(32.88±3.60)μg/L,层粘连蛋白:(120.37±15.57)μg/L vs(214.48±21.39)μg/L vs(162.54±19.22)μg/L vs(161.66±14.23)μg/L,Ⅲ型前胶原:(4.04±1.01)μg/L vs(11.70±3.09)μg/L vs(8.12±1.87)μg/L vs(7.80±1.72)μg/L,Ⅳ型胶原:(12.96±2.82)μg/L vs(31.34±4.44)μg/L vs(23.72±3.69)μg/L vs(22.85±3.00)μg/L;P均<0.05],模型组小鼠肝纤维化指标均显著高于竹沥组和丹参酚酸B组(P均<0.05),竹沥组和丹参酚酸B组差异无统计学意义(P均>0.05)。空白组Rho A和ROCK2m RNA相对表达量均显著低于模型组、竹沥组和丹参酚酸B组(Rho A m RNA:1.05±0.18 vs 2.61±0.37 vs 1.62±0.21 vs 1.50±0.14,ROCK2 m RNA:1.04±0.17vs2.32±0.29vs1.46±0.08vs1.45±0.09;P均<0.05),模型组Rho A和ROCK2m RNA相对表达量均显著高于竹沥组和丹参酚酸B组(P均<0.05),竹沥组和丹参酚酸B组差异无统计学意义(P均>0.05)。空白组Rho A和ROCK2蛋白相对表达量均显著低于模型组、竹沥组和丹参酚酸B组(Rho A蛋白:0.14±0.03 vs 0.43±0.05 vs 0.26±0.02 vs 0.30±0.15;ROCK2蛋白:0.28±0.03 vs 0.76±0.09 vs 0.38±0.04 vs 0.49±0.03;P均<0.05),模型组Rho A和ROCK2蛋白相对表达量均显著高于竹沥组和丹参酚酸B组(P均<0.05),竹沥组和丹参酚酸B组差异无统计学意义(P均>0.05)。结论竹沥可抑制Rho-ROCK信号转导通路的活动,可能是其抗肝纤维化的作用机制。展开更多
The effect of aeration and waterscape structures reaeration system on nitrogen and phosphorus removal efficiency in revetment wetlands was studied by laboratory simulation. The results showed that the removal efficien...The effect of aeration and waterscape structures reaeration system on nitrogen and phosphorus removal efficiency in revetment wetlands was studied by laboratory simulation. The results showed that the removal efficiency of TN, TP in tranquil flow waterscape was 61% and 72%; aeration and waterscape structure system promoted nitrogen and phosphorus removal efficiency in revetment wetland through increasing the DO content in the water, compared with system without artificial oxygen, the removal efficiency of TP in waterscape structures increased by 11. 6%-19. 1%, and that of TN increased by 10.5%-16. 1%; meanwhile, disturbance brought by the waterscape structure systems enhanced the adsorption of TP and flocculation effect; in addition, nitrification was confirmed as the main control step of TN removal in revetment wetland system.展开更多
文摘目的探究竹沥对肝纤维化小鼠Ras同源基因-Rho相关螺旋卷曲蛋白激酶(Ras homologousgene-Rho-associatedcoiled-coilcontainingkinases,Rho-ROCK)信号转导通路的作用,分析竹沥抗肝纤维化的分子机制。方法将40只KM小鼠随机分为空白组、模型组、竹沥组和丹参酚酸B组,每组10只,模型组、竹沥组和丹参酚酸B组小鼠给予40%CCl4花生油混合液(剂量2μl/g),空白组给予等量生理盐水,腹腔注射,2次/周,连续8周。模型构建成功后,竹沥组以竹沥灌胃,每日1次,每次30 ml/100 g;丹参酚酸B组以丹参酚酸B溶液灌胃,每日1次,每次用量0.25 mg/100 g;其余2组给予等量生理盐水灌胃,持续4周。末次给药后对小鼠眼球取血并处死,采用HE染色观察肝组织病理并进行Ishak评分,采用γ放射免疫全自动双探头计数器检测肝纤维化指标,包括透明质酸、层粘连蛋白、Ⅲ型前胶原和Ⅳ型胶原,采用实时荧光定量聚合酶链式反应(real-time quantitative polymerase chain reaction,q RT-PCR)检测Rho A和ROCK2m RNA的相对表达量,采用Western blot检测Rho A和ROCK2蛋白的相对表达量。结果空白组、模型组、竹沥组和丹参酚酸B组小鼠Ishak评分分别为(0.40±0.05)分、(4.80±0.84)分、(3.20±0.45)分和(2.80±0.83)分,差异有统计学意义(F=34.807,P<0.001),其中空白组显著低于模型组、竹沥组和丹参酚酸B组(t=8.690,P<0.001;t=5.674,P<0.001;t=4.768,P=0.001),模型组显著高于竹沥组和丹参酚酸B组(t=3.016,P=0.017;t=3.922,P=0.004),竹沥组和丹参酚酸B组差异无统计学意义(t=0.809,P=0.464)。空白组小鼠肝纤维化指标均显著低于模型组、竹沥组和丹参酚酸B组[透明质酸:(26.14±2.69)μg/L vs(53.69±5.87)μg/L vs(37.21±3.04)μg/L vs(32.88±3.60)μg/L,层粘连蛋白:(120.37±15.57)μg/L vs(214.48±21.39)μg/L vs(162.54±19.22)μg/L vs(161.66±14.23)μg/L,Ⅲ型前胶原:(4.04±1.01)μg/L vs(11.70±3.09)μg/L vs(8.12±1.87)μg/L vs(7.80±1.72)μg/L,Ⅳ型胶原:(12.96±2.82)μg/L vs(31.34±4.44)μg/L vs(23.72±3.69)μg/L vs(22.85±3.00)μg/L;P均<0.05],模型组小鼠肝纤维化指标均显著高于竹沥组和丹参酚酸B组(P均<0.05),竹沥组和丹参酚酸B组差异无统计学意义(P均>0.05)。空白组Rho A和ROCK2m RNA相对表达量均显著低于模型组、竹沥组和丹参酚酸B组(Rho A m RNA:1.05±0.18 vs 2.61±0.37 vs 1.62±0.21 vs 1.50±0.14,ROCK2 m RNA:1.04±0.17vs2.32±0.29vs1.46±0.08vs1.45±0.09;P均<0.05),模型组Rho A和ROCK2m RNA相对表达量均显著高于竹沥组和丹参酚酸B组(P均<0.05),竹沥组和丹参酚酸B组差异无统计学意义(P均>0.05)。空白组Rho A和ROCK2蛋白相对表达量均显著低于模型组、竹沥组和丹参酚酸B组(Rho A蛋白:0.14±0.03 vs 0.43±0.05 vs 0.26±0.02 vs 0.30±0.15;ROCK2蛋白:0.28±0.03 vs 0.76±0.09 vs 0.38±0.04 vs 0.49±0.03;P均<0.05),模型组Rho A和ROCK2蛋白相对表达量均显著高于竹沥组和丹参酚酸B组(P均<0.05),竹沥组和丹参酚酸B组差异无统计学意义(P均>0.05)。结论竹沥可抑制Rho-ROCK信号转导通路的活动,可能是其抗肝纤维化的作用机制。
基金Sponsored by Shaanxi Provincial Water Conservancy Science and Technology Program(2015slkj-17)
文摘The effect of aeration and waterscape structures reaeration system on nitrogen and phosphorus removal efficiency in revetment wetlands was studied by laboratory simulation. The results showed that the removal efficiency of TN, TP in tranquil flow waterscape was 61% and 72%; aeration and waterscape structure system promoted nitrogen and phosphorus removal efficiency in revetment wetland through increasing the DO content in the water, compared with system without artificial oxygen, the removal efficiency of TP in waterscape structures increased by 11. 6%-19. 1%, and that of TN increased by 10.5%-16. 1%; meanwhile, disturbance brought by the waterscape structure systems enhanced the adsorption of TP and flocculation effect; in addition, nitrification was confirmed as the main control step of TN removal in revetment wetland system.
