A water flow simulation device capable of adjusting flow velocity was designed in flow velocity range of 0–30 cm/s,with which an indoor experiment was conducted to simulate the movement and adhesive behaviors of diff...A water flow simulation device capable of adjusting flow velocity was designed in flow velocity range of 0–30 cm/s,with which an indoor experiment was conducted to simulate the movement and adhesive behaviors of different-sized Apostichopus japonicus under different flow velocities.Observation showed that,in slow flow(~5 cm/s),A.japonicus moved more distance than in still water,and hardly moved in the riptide(~30 cm/s);and the adhesive capacity of A.japonicus was related to the flow velocity and attachment time.A.japonicus were able to attach to the bottom after any attachment time in the slow flow,after 10 s in the medium flow(~15 cm/s),and after 60 s in the riptide(~30 cm/s).In addition,larger A.japonicus were stronger with adhesive ability than smaller ones.The transcriptome data showed that the expression of transient receptor potential cation channel subfamily A,member 1(TRPA1)in the tube feet was increased significantly in a flowing water,but those in the tentacles and tube feet were not significantly changed.Fluorescence in-situ hybridization results showed that TRPA1 was expressed around the watervascular of tentacles,tube feet,body wall,and spines.Therefore,tube feet were important for sea cucumbers to keep themselves stable in relatively swift flow with adhesion ability.展开更多
目的观察疏肝和胃方对胃食管反流大鼠模型背根神经节中内脏敏感因子瞬时受体电位香草酸亚型1(TRPV1)表达的影响,探讨其治疗胃食管反流病的机理。方法将40只SD大鼠按随机数字表法分为正常组、模型组、中药组及西药组,每组10只,除正常组...目的观察疏肝和胃方对胃食管反流大鼠模型背根神经节中内脏敏感因子瞬时受体电位香草酸亚型1(TRPV1)表达的影响,探讨其治疗胃食管反流病的机理。方法将40只SD大鼠按随机数字表法分为正常组、模型组、中药组及西药组,每组10只,除正常组外均行贲门肌切开术加幽门半结扎术制备反流性食管炎模型,并分别给予相应干预措施。免疫组化法及实时荧光定量核酸扩增检测(QPCR)方法观察各组大鼠背根神经节TRPV1受体及TRPV1 m RNA的表达。结果与正常组相比,模型组、西药组大鼠背根神经节中TRPV1阳性表达明显增高(P<0.05);中药组与正常组比较无统计学差异(P>0.05);与西药组比较,中药组TRPV1阳性表达明显降低(P<0.05)。模型组背根神经节组织中TRPV1 m RNA表达水平明显高于正常组、中药组及西药组(P<0.05);中药组、西药组与正常组比较差异无统计学意义(P>0.05);中药组与西药组比较,两组背根神经节组织中TRPV1 m RNA表达差异无统计学意义(P>0.05)。结论疏肝和胃方可能通过抑制TRPV1过度表达来发挥其治疗胃食管反流病的作用。展开更多
基金the National Key R&D Program of China(No.2019YFD0900800)the National Science Foundation for Young Scientists of China(No.41606171)+1 种基金the Marine S&T Fund of Shandong Province for Pilot National Laboratory for Marine Science and Technology(Qingdao)(No.2018SDKJ0502)the Science and Technology Service Network Program of Chinese Academy of Sciences(No.KFJ-STS-ZDTP-55)。
文摘A water flow simulation device capable of adjusting flow velocity was designed in flow velocity range of 0–30 cm/s,with which an indoor experiment was conducted to simulate the movement and adhesive behaviors of different-sized Apostichopus japonicus under different flow velocities.Observation showed that,in slow flow(~5 cm/s),A.japonicus moved more distance than in still water,and hardly moved in the riptide(~30 cm/s);and the adhesive capacity of A.japonicus was related to the flow velocity and attachment time.A.japonicus were able to attach to the bottom after any attachment time in the slow flow,after 10 s in the medium flow(~15 cm/s),and after 60 s in the riptide(~30 cm/s).In addition,larger A.japonicus were stronger with adhesive ability than smaller ones.The transcriptome data showed that the expression of transient receptor potential cation channel subfamily A,member 1(TRPA1)in the tube feet was increased significantly in a flowing water,but those in the tentacles and tube feet were not significantly changed.Fluorescence in-situ hybridization results showed that TRPA1 was expressed around the watervascular of tentacles,tube feet,body wall,and spines.Therefore,tube feet were important for sea cucumbers to keep themselves stable in relatively swift flow with adhesion ability.
文摘目的观察疏肝和胃方对胃食管反流大鼠模型背根神经节中内脏敏感因子瞬时受体电位香草酸亚型1(TRPV1)表达的影响,探讨其治疗胃食管反流病的机理。方法将40只SD大鼠按随机数字表法分为正常组、模型组、中药组及西药组,每组10只,除正常组外均行贲门肌切开术加幽门半结扎术制备反流性食管炎模型,并分别给予相应干预措施。免疫组化法及实时荧光定量核酸扩增检测(QPCR)方法观察各组大鼠背根神经节TRPV1受体及TRPV1 m RNA的表达。结果与正常组相比,模型组、西药组大鼠背根神经节中TRPV1阳性表达明显增高(P<0.05);中药组与正常组比较无统计学差异(P>0.05);与西药组比较,中药组TRPV1阳性表达明显降低(P<0.05)。模型组背根神经节组织中TRPV1 m RNA表达水平明显高于正常组、中药组及西药组(P<0.05);中药组、西药组与正常组比较差异无统计学意义(P>0.05);中药组与西药组比较,两组背根神经节组织中TRPV1 m RNA表达差异无统计学意义(P>0.05)。结论疏肝和胃方可能通过抑制TRPV1过度表达来发挥其治疗胃食管反流病的作用。
