目的:探讨粪菌移植对Th17/Treg平衡的调控及帕金森病(PD)小鼠的神经保护作用。方法:将18只小鼠均分为正常对照组、粪菌移植对照组及粪菌移植组,后两组采用—方法建立PD模型;粪菌移植组小鼠在建立PD模型后、以正常对照组小鼠的粪便菌悬...目的:探讨粪菌移植对Th17/Treg平衡的调控及帕金森病(PD)小鼠的神经保护作用。方法:将18只小鼠均分为正常对照组、粪菌移植对照组及粪菌移植组,后两组采用—方法建立PD模型;粪菌移植组小鼠在建立PD模型后、以正常对照组小鼠的粪便菌悬液灌胃,粪菌移植对照组和正常对照组予生理盐水灌胃;爬杆实验评价小鼠的行动能力,牵引实验评价小鼠肌肉力量及平衡能力;Real-time PCR、Western blot检测小鼠黑质致密部(SNpc)RORγt、Foxp3 m RNA及蛋白表达;免疫荧光双染检测小鼠SNpc中Th17细胞(RORγt+CD4+)及Treg细胞(Foxp3+CD4+)的表达;ELISA检测小鼠纹状体中DA、5-HT的表达以及外周血与SNpc中IL-17A、IL-22、TGF-β、IL-10的表达。结果:与粪菌移植对照组比较,粪菌移植组小鼠爬杆实验中返回到杆底部的时间明显缩短(P<0.01),牵引实验中得分明显增加(P<0.01),小鼠SNpc中RORγt m RNA和蛋白的表达明显下调(P<0.01),粪菌移植组小鼠Foxp3 m RNA及蛋白表达明显上调(P<0.01),小鼠纹状体内DA及5-HT的含量明显升高(P<0.01),小鼠外周血与SNpc中IL-17A与IL-22的含量明显下调(P<0.01),IL-10与TGF-β明显上调(P<0.01),小鼠SNpc中Th17细胞(RORγt+CD4+)的数量有所下调,而Treg细胞(Foxp3+CD4+)的数量有所上调。结论:粪便移植对PD小鼠有神经保护作用,其机制可能与调节Th17/Treg平衡、DA与5-HT含量有关。展开更多
The environmental impact of greenhouse gases based on natural gas flaring influences the rate of gas recovery around the world. In the Republic of Congo, the natural gas reserve in 2019 is estimated at 90 billion cubi...The environmental impact of greenhouse gases based on natural gas flaring influences the rate of gas recovery around the world. In the Republic of Congo, the natural gas reserve in 2019 is estimated at 90 billion cubic meters (BCM). In this study, from the Congolese gas reserve we used five gas turbines with a capacity of 150 MW each;these five turbines consume 1.69 billion cubic meters (BCM)/year for the power of 273.750 MW and consumption of 6.57 billion kilowatt-hours. The results of this study revealed that an investment capital of 192,305,137 euros was required with a net profit of 9,581,250 euros at an annual rate of return of 4.98% with an investment payback period of approximately 20 years. This will allow the Congolese government to accomplish its policy of valuing gas and developing the country;the electricity produced by the National Petroleum Company of Congo (SNPC) will be sold to the Electrical Energy of Congo (E<sup>2</sup>C) at 0.06 euro/kWh.展开更多
Adsorption behavior and electronic structure of tin-phthalocyanine (SnPc) on Ag(111) surface with Sn-up and Sn-down conformations are investigated using first-principles calculations. Two predicted adsorption configur...Adsorption behavior and electronic structure of tin-phthalocyanine (SnPc) on Ag(111) surface with Sn-up and Sn-down conformations are investigated using first-principles calculations. Two predicted adsorption configurations agree well with the experimentally determined structures. SnPc molecule energetically prefers to adsorb on Ag(111) surface with Sn-down conformation. The energy required to move the central Sn atom through the frame of a phthalocyanine molecule, switching from the Sn-up to Sn-down conformation, is about 1.68 eV. The simulated scanning tunneling microscopy images reproduce the main features of experimental observations. Moreover, the experimentally proposed hole attachment mechanism is verified based on the calculated density of states of SnPc on Ag(111) with three different adsorption configurations.展开更多
文摘目的:探讨粪菌移植对Th17/Treg平衡的调控及帕金森病(PD)小鼠的神经保护作用。方法:将18只小鼠均分为正常对照组、粪菌移植对照组及粪菌移植组,后两组采用—方法建立PD模型;粪菌移植组小鼠在建立PD模型后、以正常对照组小鼠的粪便菌悬液灌胃,粪菌移植对照组和正常对照组予生理盐水灌胃;爬杆实验评价小鼠的行动能力,牵引实验评价小鼠肌肉力量及平衡能力;Real-time PCR、Western blot检测小鼠黑质致密部(SNpc)RORγt、Foxp3 m RNA及蛋白表达;免疫荧光双染检测小鼠SNpc中Th17细胞(RORγt+CD4+)及Treg细胞(Foxp3+CD4+)的表达;ELISA检测小鼠纹状体中DA、5-HT的表达以及外周血与SNpc中IL-17A、IL-22、TGF-β、IL-10的表达。结果:与粪菌移植对照组比较,粪菌移植组小鼠爬杆实验中返回到杆底部的时间明显缩短(P<0.01),牵引实验中得分明显增加(P<0.01),小鼠SNpc中RORγt m RNA和蛋白的表达明显下调(P<0.01),粪菌移植组小鼠Foxp3 m RNA及蛋白表达明显上调(P<0.01),小鼠纹状体内DA及5-HT的含量明显升高(P<0.01),小鼠外周血与SNpc中IL-17A与IL-22的含量明显下调(P<0.01),IL-10与TGF-β明显上调(P<0.01),小鼠SNpc中Th17细胞(RORγt+CD4+)的数量有所下调,而Treg细胞(Foxp3+CD4+)的数量有所上调。结论:粪便移植对PD小鼠有神经保护作用,其机制可能与调节Th17/Treg平衡、DA与5-HT含量有关。
文摘The environmental impact of greenhouse gases based on natural gas flaring influences the rate of gas recovery around the world. In the Republic of Congo, the natural gas reserve in 2019 is estimated at 90 billion cubic meters (BCM). In this study, from the Congolese gas reserve we used five gas turbines with a capacity of 150 MW each;these five turbines consume 1.69 billion cubic meters (BCM)/year for the power of 273.750 MW and consumption of 6.57 billion kilowatt-hours. The results of this study revealed that an investment capital of 192,305,137 euros was required with a net profit of 9,581,250 euros at an annual rate of return of 4.98% with an investment payback period of approximately 20 years. This will allow the Congolese government to accomplish its policy of valuing gas and developing the country;the electricity produced by the National Petroleum Company of Congo (SNPC) will be sold to the Electrical Energy of Congo (E<sup>2</sup>C) at 0.06 euro/kWh.
文摘Adsorption behavior and electronic structure of tin-phthalocyanine (SnPc) on Ag(111) surface with Sn-up and Sn-down conformations are investigated using first-principles calculations. Two predicted adsorption configurations agree well with the experimentally determined structures. SnPc molecule energetically prefers to adsorb on Ag(111) surface with Sn-down conformation. The energy required to move the central Sn atom through the frame of a phthalocyanine molecule, switching from the Sn-up to Sn-down conformation, is about 1.68 eV. The simulated scanning tunneling microscopy images reproduce the main features of experimental observations. Moreover, the experimentally proposed hole attachment mechanism is verified based on the calculated density of states of SnPc on Ag(111) with three different adsorption configurations.
