OBJECTIVE To study the effect of polygonatum polysaccharide on zebrafish with Alzheimer disease.METHODS Zebrafish were trained in T maze for 7 d.The 40 zebrafish successfully trained were divided into 4 groups:blank g...OBJECTIVE To study the effect of polygonatum polysaccharide on zebrafish with Alzheimer disease.METHODS Zebrafish were trained in T maze for 7 d.The 40 zebrafish successfully trained were divided into 4 groups:blank group,model group,positive group and polygonatum polysaccharide group.Model group,positive group and polygonatum polysaccharide group were put in AlCl3100μg·L^(-1) for 6 d.The positive group was exposed to Huperzine A solution 4μg·L^(-1),and the polygonatum polysaccharide group was exposed to polygonatum polysaccharide solution 6 g·L^(-1) for 6 d.The model group was not treated,and the blank group was not treated.Each stage of zebrafish was recorded by video,and the time of each group in the EC region was analyzed.After administration,the brain tissue was taken out and the expression of N-cadherin,P38 and p-P38 protein factors was determined by Western blotting.RESULTS In behavior,the analysis of the time spent in the EC area,the blank group,the positive group and the polygonatum polysaccharide group were compared with the model group,respectively,there were statistically significant differences(P<0.05).At the protein level,compared with the model group,the P38 and p-P38 proteins in the positive group and the polygonatum polysaccharide group were down-regulated,while the N-cadherin protein was up-regulated,with statistical difference(P<0.05).CONCLUSION Polygonatum polysaccharide can improve the learning and memory ability of zebrafish with Alzheimer disease by up regulating the protein level of N-cadherin and hindering P38 phosphorylation.展开更多
OBJECTIVE To investigate the effect of rhynchophylline on zebrafish with Alzheimer disease induced by AlCl3.METHODS Zebrafish were trained in T maze for 7 d.60 zebrafish were selected and divided into 6 groups:blank g...OBJECTIVE To investigate the effect of rhynchophylline on zebrafish with Alzheimer disease induced by AlCl3.METHODS Zebrafish were trained in T maze for 7 d.60 zebrafish were selected and divided into 6 groups:blank group,model group,positive group,low-dose group,medium-dose group and high-dose group,with 10 in each group.Feeding zebrafish adaptively for 2 d,starting training on the third day,and recording its movement track;Except the blank group,the other five groups were modeled and their motion trajectories were recorded.After modeling,the drug group was giv⁃en rhynchophylline,while the positive group was given huperzine A,and the movement track was recorded.The recorded movement track was analyzed by behavioral record analysis software smart 3.0.The expression levels of P38,p-P38 protein and N-cadherin protein in zebrafish brain tissue were detected by Western blotting.RESULTS The data of time spent in the green short arm area of six groups of zebrafish were compared and analyzed:there was significant dif⁃ference between blank group and model group(P<0.05),and there was significant difference between model group and positive group,low dose group,middle dose group and high dose group(P<0.05).Comparative analysis of the time percentage of zebrafish in the green arm area of six groups:there was significant differ⁃ence between the blank group and the model group(P<0.05),and there was significant differ⁃ence between the model group and the positive group,the rhynchophylline administration group,low dose group,middle dose group and high dose group(P<0.05).The protein was detected by Western blotting.Compared with the model group,the expression level of N-cadherin protein was up-regulated(P<0.05).Compared with the model group,the expression levels of p-P38 pro⁃tein in blank group,positive group and rhyncho⁃phylline administration group were down-regulat⁃ed(P<0.05).CONCLUSION Uncaria rhyncho⁃phylline can down-regulate the ratio of p-P38/P38 and up-regulate N-cadherin,thus improving the learning and memory ability of zebrafish with Alzheimer disease.展开更多
OBJECTIVE To investigate the effect of rhynchophylline on behavior of zebrafish with Alzheimer disease induced by AlCl3.METH⁃ODS Take a video of the zebrafish before train⁃ing,which is convenient for judging whether t...OBJECTIVE To investigate the effect of rhynchophylline on behavior of zebrafish with Alzheimer disease induced by AlCl3.METH⁃ODS Take a video of the zebrafish before train⁃ing,which is convenient for judging whether the zebrafish has been trained successfully.Then,the zebrafish were trained for 7 d.The 60 zebraf⁃ish that were successfully trained were randomly divided into 6 groups:normal group,model group,positive group,low-dose rhynchophylline group,middle-dose group,and high-dose group.The normal group was video-recorded,while the model group,positive group,low-dose group,middle-dose group,and high-dose group were given AlCl3 for modeling.After that,the model group was videotaped,and the other groups were given drug intervention.Both the positive group and the rhynchophylline administration group were administered for 6 d,and finally all the administration groups were videotaped.After all the video is finished,the behavioral analysis software smart 3.0 was used for behavioral anal⁃ysis,and conclusions are drawn by analyzing the data.RESULTS The data of the 6 groups of zebrafish staying in the red short arm area were used for comparative analysis:there was a signif⁃icant difference between the normal group and the model group(P<0.05),the model group and the positive group,and the middle-dose group of rhynchophylline There are significant differences in the high-dose group(P<0.05).Comparative analysis with the data of the percentage of zebraf⁃ish in the red short arm area of the 6 groups:the normal group and the model group are signifi⁃cantly different(P<0.05),There were significant differences between the model group and posi⁃tive group,the dose of the rhynchophylline administration group high-dose group and the middle-dose group(P<0.05).Comparing the data of the swimming distance of the 6 groups of zebrafish in the red short arm area:the normal group and the model group are not significantly different(P>0.05),while the model group is only significantly different from the high-dose group(P<0.05).However,the comparison of the percentage of zebrafish swimming distance in the red short arm area of the 6 groups of data:the normal group and the model group are signifi⁃cantly different(P<0.05),the model group and the positive group,and the rhynchophylline administration group There were significant differ⁃ences between the dose group and the high-dose group(P<0.05).CONCLUSION Rhynchophyl⁃line can improve the behavior of zebrafish with Alzheimer disease.展开更多
The single-electron detachment cross sections of Cu^(-) in collision with He have been measured in the range of 10-30keV by a growth rate method. The typical value of the cross section is 7.63×10-16 cm^(2) at an ...The single-electron detachment cross sections of Cu^(-) in collision with He have been measured in the range of 10-30keV by a growth rate method. The typical value of the cross section is 7.63×10-16 cm^(2) at an energy of 20 keV. The experimental uncertainty of the results is about ±8%.展开更多
文摘OBJECTIVE To study the effect of polygonatum polysaccharide on zebrafish with Alzheimer disease.METHODS Zebrafish were trained in T maze for 7 d.The 40 zebrafish successfully trained were divided into 4 groups:blank group,model group,positive group and polygonatum polysaccharide group.Model group,positive group and polygonatum polysaccharide group were put in AlCl3100μg·L^(-1) for 6 d.The positive group was exposed to Huperzine A solution 4μg·L^(-1),and the polygonatum polysaccharide group was exposed to polygonatum polysaccharide solution 6 g·L^(-1) for 6 d.The model group was not treated,and the blank group was not treated.Each stage of zebrafish was recorded by video,and the time of each group in the EC region was analyzed.After administration,the brain tissue was taken out and the expression of N-cadherin,P38 and p-P38 protein factors was determined by Western blotting.RESULTS In behavior,the analysis of the time spent in the EC area,the blank group,the positive group and the polygonatum polysaccharide group were compared with the model group,respectively,there were statistically significant differences(P<0.05).At the protein level,compared with the model group,the P38 and p-P38 proteins in the positive group and the polygonatum polysaccharide group were down-regulated,while the N-cadherin protein was up-regulated,with statistical difference(P<0.05).CONCLUSION Polygonatum polysaccharide can improve the learning and memory ability of zebrafish with Alzheimer disease by up regulating the protein level of N-cadherin and hindering P38 phosphorylation.
基金National Natural Science Foundation of China(8216140711)Natural Sci⁃ence Foundation of Guangxi Zhuang Autono⁃mous Region(2017GXNSFAA198255)+3 种基金Natural Science Foundation of Guangxi Zhuang Autono⁃mous Region(2018GXNSFBA138028)Guangxi Key Laboratory of Brain and Cognitive Neurosci⁃ence Open Project Funding(GKLBCN-20180105-03)2019 College Student Innovation and Entrepreneurship Project Training Plan(201910601038)and the Fourth Training Plan for Thousands of Young and Mid-aged Mainstay Teachers in Guangxi Colleges and Universities。
文摘OBJECTIVE To investigate the effect of rhynchophylline on zebrafish with Alzheimer disease induced by AlCl3.METHODS Zebrafish were trained in T maze for 7 d.60 zebrafish were selected and divided into 6 groups:blank group,model group,positive group,low-dose group,medium-dose group and high-dose group,with 10 in each group.Feeding zebrafish adaptively for 2 d,starting training on the third day,and recording its movement track;Except the blank group,the other five groups were modeled and their motion trajectories were recorded.After modeling,the drug group was giv⁃en rhynchophylline,while the positive group was given huperzine A,and the movement track was recorded.The recorded movement track was analyzed by behavioral record analysis software smart 3.0.The expression levels of P38,p-P38 protein and N-cadherin protein in zebrafish brain tissue were detected by Western blotting.RESULTS The data of time spent in the green short arm area of six groups of zebrafish were compared and analyzed:there was significant dif⁃ference between blank group and model group(P<0.05),and there was significant difference between model group and positive group,low dose group,middle dose group and high dose group(P<0.05).Comparative analysis of the time percentage of zebrafish in the green arm area of six groups:there was significant differ⁃ence between the blank group and the model group(P<0.05),and there was significant differ⁃ence between the model group and the positive group,the rhynchophylline administration group,low dose group,middle dose group and high dose group(P<0.05).The protein was detected by Western blotting.Compared with the model group,the expression level of N-cadherin protein was up-regulated(P<0.05).Compared with the model group,the expression levels of p-P38 pro⁃tein in blank group,positive group and rhyncho⁃phylline administration group were down-regulat⁃ed(P<0.05).CONCLUSION Uncaria rhyncho⁃phylline can down-regulate the ratio of p-P38/P38 and up-regulate N-cadherin,thus improving the learning and memory ability of zebrafish with Alzheimer disease.
基金National Natural Science Foundation of China(8216140711)Natural Sci⁃ence Foundation of Guangxi Zhuang Autono⁃mous Region(2017GXNSFAA198255)+3 种基金Natural Science Foundation of Guangxi Zhuang Autono⁃mous Region(2018GXNSFBA138028)Guangxi Key Laboratory of Brain and Cognitive Neurosci⁃ence Open Project Funding(GKLBCN-20180105-03)2019 College Student Innovation and En⁃trepreneurship Project Training Plan(201910601038)and the Fourth Training Plan for Thou⁃sands of Young and Mid-aged Mainstay Teach⁃ers in Guangxi Colleges and Universities.
文摘OBJECTIVE To investigate the effect of rhynchophylline on behavior of zebrafish with Alzheimer disease induced by AlCl3.METH⁃ODS Take a video of the zebrafish before train⁃ing,which is convenient for judging whether the zebrafish has been trained successfully.Then,the zebrafish were trained for 7 d.The 60 zebraf⁃ish that were successfully trained were randomly divided into 6 groups:normal group,model group,positive group,low-dose rhynchophylline group,middle-dose group,and high-dose group.The normal group was video-recorded,while the model group,positive group,low-dose group,middle-dose group,and high-dose group were given AlCl3 for modeling.After that,the model group was videotaped,and the other groups were given drug intervention.Both the positive group and the rhynchophylline administration group were administered for 6 d,and finally all the administration groups were videotaped.After all the video is finished,the behavioral analysis software smart 3.0 was used for behavioral anal⁃ysis,and conclusions are drawn by analyzing the data.RESULTS The data of the 6 groups of zebrafish staying in the red short arm area were used for comparative analysis:there was a signif⁃icant difference between the normal group and the model group(P<0.05),the model group and the positive group,and the middle-dose group of rhynchophylline There are significant differences in the high-dose group(P<0.05).Comparative analysis with the data of the percentage of zebraf⁃ish in the red short arm area of the 6 groups:the normal group and the model group are signifi⁃cantly different(P<0.05),There were significant differences between the model group and posi⁃tive group,the dose of the rhynchophylline administration group high-dose group and the middle-dose group(P<0.05).Comparing the data of the swimming distance of the 6 groups of zebrafish in the red short arm area:the normal group and the model group are not significantly different(P>0.05),while the model group is only significantly different from the high-dose group(P<0.05).However,the comparison of the percentage of zebrafish swimming distance in the red short arm area of the 6 groups of data:the normal group and the model group are signifi⁃cantly different(P<0.05),the model group and the positive group,and the rhynchophylline administration group There were significant differ⁃ences between the dose group and the high-dose group(P<0.05).CONCLUSION Rhynchophyl⁃line can improve the behavior of zebrafish with Alzheimer disease.
基金Supported by the National Natural Science Foundation of China under Grant No.19874015。
文摘The single-electron detachment cross sections of Cu^(-) in collision with He have been measured in the range of 10-30keV by a growth rate method. The typical value of the cross section is 7.63×10-16 cm^(2) at an energy of 20 keV. The experimental uncertainty of the results is about ±8%.
