People's livelihood improvement is the prerequisite of social harmony.Food,clothing shelter and transportation are the direct manifestation of the people's livelihood.In China's vast rural areas,the most s...People's livelihood improvement is the prerequisite of social harmony.Food,clothing shelter and transportation are the direct manifestation of the people's livelihood.In China's vast rural areas,the most significant manifestation of people's livelihood improvement is the improvement of living conditions.Based on the data on two censuses,this paper analyzes the degree of improvement of rural residents'living conditions from the changes in the rural residents'residential structure.Finally this paper puts forth the following recommendations for improving the rural residents'residential structure:continuing to put farmers in the first place;taking truly improving the residential structure as a starting point,and prohibiting the"vanity project";taking preferential policies for the improvement of living conditions.展开更多
Neomycin belongs to the family of 2-deoxystreptamine-containing aminoglycoside antibiotics.It is widely used for bacterial infections,targeting most gram-negative and some gram-positive bacteria.Neomycin has also been...Neomycin belongs to the family of 2-deoxystreptamine-containing aminoglycoside antibiotics.It is widely used for bacterial infections,targeting most gram-negative and some gram-positive bacteria.Neomycin has also been reported to show antiviral activity.Here,we evaluated the toxicity of neomycin sulfate,and investigated its effect on non-specific immunity and viral infection in crucian carp(Carassius auratus gibelio).The safe concentration of neomycin sulfate for crucian carp was determined to be 102.9 mg/kg in vivo.In oxidative damage assays,neomycin sulfate increased superoxide dismutase and catalase activity and decreased malondialdehyde in the liver of crucian carp.In non-specific blood immune assays,the white blood cell count and complement 3 content significantly increased after neomycin sulfate treatment,while no significant changes were observed in antibacterial or lysozyme activity.In a challenge test,neomycin sulfate protected the crucian carp from cyprinid herpesvirus 2(CyHV-2)infection and inhibited CyHV-2 replication.In cytotoxicity assays,low concentrations of neomycin sulfate had no cytotoxicity on cells from the fins of crucian carp.The results of the present study indicate that oral administration of neomycin sulfate reduced oxidative damage,enhanced immunity and provided protection against CyHV-2 in crucian carp.展开更多
基金Supported by Project of Hebei Provincial Federation of Humanities & Social Sciences(201201081)
文摘People's livelihood improvement is the prerequisite of social harmony.Food,clothing shelter and transportation are the direct manifestation of the people's livelihood.In China's vast rural areas,the most significant manifestation of people's livelihood improvement is the improvement of living conditions.Based on the data on two censuses,this paper analyzes the degree of improvement of rural residents'living conditions from the changes in the rural residents'residential structure.Finally this paper puts forth the following recommendations for improving the rural residents'residential structure:continuing to put farmers in the first place;taking truly improving the residential structure as a starting point,and prohibiting the"vanity project";taking preferential policies for the improvement of living conditions.
基金This work was supported by the Earmarked Fund for China Agriculture Research System(grant number CARS-45-19).The authors report no conflicts of interest in this paper.
文摘Neomycin belongs to the family of 2-deoxystreptamine-containing aminoglycoside antibiotics.It is widely used for bacterial infections,targeting most gram-negative and some gram-positive bacteria.Neomycin has also been reported to show antiviral activity.Here,we evaluated the toxicity of neomycin sulfate,and investigated its effect on non-specific immunity and viral infection in crucian carp(Carassius auratus gibelio).The safe concentration of neomycin sulfate for crucian carp was determined to be 102.9 mg/kg in vivo.In oxidative damage assays,neomycin sulfate increased superoxide dismutase and catalase activity and decreased malondialdehyde in the liver of crucian carp.In non-specific blood immune assays,the white blood cell count and complement 3 content significantly increased after neomycin sulfate treatment,while no significant changes were observed in antibacterial or lysozyme activity.In a challenge test,neomycin sulfate protected the crucian carp from cyprinid herpesvirus 2(CyHV-2)infection and inhibited CyHV-2 replication.In cytotoxicity assays,low concentrations of neomycin sulfate had no cytotoxicity on cells from the fins of crucian carp.The results of the present study indicate that oral administration of neomycin sulfate reduced oxidative damage,enhanced immunity and provided protection against CyHV-2 in crucian carp.
