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8篇 您的检索式:作者名="Youyi Yan"
    题名 作者 年代 出处 被引量
1Cardiomyocyte overexpression of miR-27b induces cardiac hypertrophy and dysfunction in mice显示文摘最近的研究开始在心脏的肥大和机能障碍的致病揭示了 microRNAs (miRNAs ) 的关键角色。在这研究,我们测试了是否转变生长 factor-β(TGF-β) 调整 miRNA 在心脏的肥大和心失败(HF ) 的发展起了一个枢轴的作用。我们观察到 miR-27b 是在 cardiomyocyte 特定的 Smad4 猛烈老鼠的心的 upregulated,它开发了心脏的肥大。在 vitro,实验证明 miR-27b 表示能被 TGF-β 禁止; 1 并且它的 overexpression 支持了 hypertrophic 房间生长,当 miR-27b 抑制导致了 hypertrophic 房间的抑制时,生长由 phenylephrine (PE ) 引起了处理。而且,有 miR-27b 的 cardiomyocyte 特定的 overexpression 的转基因的老鼠的分析表明 miR-27b overexpression 是足够的导致心脏的肥大和机能障碍。我们验证了 peroxisome 激活 proliferator 的 receptor-γ(PPAR-γ) 作为在 cardiomyocyte 的 miR-27b 的一个直接目标。一致地, miR-27b 转基因的老鼠显著地显示了 PPAR-γ 的底层;比控制鼠标。而且,在用在一只 pressure-overload-induced 老鼠的特定的 antagomir 的 miR-27b 的 vivo silencing, HF 的模型增加了心脏的 PPAR-γ表示,稀释心脏的肥大和机能障碍。我们的学习的结果表明那 TGF-β 1-regulated miR-27b 涉及心脏的肥大的规定,并且为心脏病作为一个有效治疗学的目标验证 miR-27b。Jian Wang Yao Song Yan Zhang Han Xiao Qiang Sun Ning Hou Shuilong Guo Youliang Wang Kaiji Fan Dawei Zhan Lagabaiyila Zha Yang Cao Zhenhua Li Xuan Cheng Youyi Zhang Xiao Yang 2012Cell Research2012,22,3:36
2Internalization of the TGF-β type I receptor into caveolin-1 and EEA1 double-positive early endosomes显示文摘Kangmin He Xiaohua Yan Nan Li Song Dang Li Xu Bing Zhao Zijian Li Zhizhen Lv Xiaohong Fang Youyi Zhang Ye-Guang Chen 2015Cell Research2015,25,6:7
3Does Security of Land Operational Rights Matter for the Improvement of Agricultural Production Efficiency under the Collective Ownership in China?显示文摘Under the'separation of three rights'policy,the impact of security of land operationalrights on agricultural production efficiency has attracted much attention in recentyears.Data envelopment analysis and mediation effect analysis were applied to 888family farms run by new-type agricultural operators from Songjiang to identify themechanism of the effect of land operational rights security on agricultural productionefficiency through long-term investment.The results show that greater security of landoperational rights generally increased agricultural production efficiency.Approximately37.94 percent of the impact could be explained by long-term investment.The resultsalso indicate that significant heterogeneity exists in the effect of land operational rightssecurity on agricultural production efficiency at various levels of the family farms'efficiency distributions.lt is suggested that government should legalize land operationalrights and give them a status equal to those of households'contractual rights and landownership rights in China's future land tenure reform.Xianqing Ji Shouying Liu Jianan Yan Youyi Li 2021China & World Economy2021,29,1:2
4A Preliminary Urinary Metabolomics Study of Sprague-Dawley Rats after Short‑term Ketamine Administration by Proton Nuclear Magnetic Resonance Spectroscopy显示文摘Drug abuse has become a global problem.The mass spectrometry‑based metabolic consequences of ketamine administration in anesthesia and therapy have been well studied,but to the best of our knowledge,metabolomic studies of ketamine abuse based on nuclear magnetic resonance(NMR)spectroscopy are still lacking.In this study,twenty Sprague–Dawley rats were randomly assigned into two groups:a control group(n=10)and a ketamine group(n=10).The animals in the ketamine group received intraperitoneal injections of ketamine twice daily at 12‑h intervals at progressively increasing doses over a period of 9 days,while the control group received an equal volume of saline.The urine samples were collected for 24 h at days 0,1,3,5,7,and 9 for the metabolomics study.The metabolic changes in urine after short‑term ketamine administration were analyzed by proton NMR coupled with multivariate statistical analysis.The results indicated that short‑term ketamine exposure led to significant alterations of the metabolites in the urine of the rats.Specifically,1,3,7‑trimethyluric acid,1,3‑dimethyluric acid,acetoacetic acid,acetylglycine,creatine,sarcosine,dimethylglycine,glycine,and theobromine were significantly increased in the urine.Significant changes were also found in metabolites related to antioxidant and energy metabolism,including acetoacetic acid,succinate,1,3,7‑trimethyluric acid,1,3‑dimethyluric acid,creatine,and taurine.Our findings indicated that short‑term ketamine administration leads to disorder of energy metabolism and oxidative stress.In addition,the modified metabolites identified could serve as the new biological markers and potential biological indices reflecting the underlying mechanism of ketamine abuse.Xiang Lu Qunxing Tang Yi Ye Run Guo Fan Chen Xinhua Dai Youyi Yan Linchuan Liao 2016Journal of Forensic Science and Medicine2016,2,2:1
5Nonlinear optical properties of silver colloidal solution by in situ synthesis technique 显示文摘Deng Yan Sun Youyi Wang Pei 2007Current Ppl Phys2007,8,1:1
6Nonlinear optical properties of silver colloidal solution by in situ synthesis technique显示文摘Yan Deng Youyi Sun Pei Wang Douguo Zhang Xiaojin Jiao Hai Ming Qijing Zhang Yang Jiao Xiaoquan Sun 2007Current Applied Physics2007,,:1
7Polymorphism study of nine SNPs associated with subjective response to alcohol in Chinese Han, Hui, Tibetan, Mongolian and Uygur populations显示文摘Heavy alcohol drinking is a major public health problem,causing a large disease,social and economic burden in societies.Subjective response (SR) to alcohol is an intermediate characteristic of heavy drinking.A variety of candidate genes have been reported to be associated with SR to alcohol.In this study,we investigated nine single nucleotide polymorphisms (SNPs) related to SR to alcohol in healthy individuals from five Chinese ethnic groups,the Han,Hui,Tibetan,Mongolian and Uygur populations,and a total of 584 bloodstain samples were collected.The nine SNPs included four SNPs in alcohol-metabolizing genes (ADH1B,ADH1C,ALDH2 and CYP2E1*5B) and five SNPs in genes of neurobiological pathways (GABRA2,OPRM1,CHRNA3,HYKK and SLC6A4).A SNaPshot analysis method was developed to type these SNPs simultaneously,and all samples were typed successfully.Statistical analyses of the allele frequencies indicated that the frequencies of all SNPs,except for ADH1C,showed varying degrees of difference in the five studied ethnic groups.Tibetans showed the highest frequencies of risk alleles for heavy drinking at most loci.The genetic polymorphic differences found in this study revealed the variation in genetic susceptibility to heavy drinking in the studied populations.Qingtao Wei Yi Ye Fan Chen Jienan Li Hao Wu Yingqiang Fu Youyi Yan Linchuan Liao 2018Forensic Sciences Research2018,3,2:1
8Determination of Chlorpyrifos in Human Blood by Gas Chromatography-Mass Spectrometry显示文摘Gas chromatography-mass spectrometry method was developed for the qualitative and quantitative analyses of chlorpyrifos in human blood samples.The chlorpyrifos and parathion(internal standard)in human blood were extracted with a mixed solvent of hexane and acetonitrile.Chlorpyrifos was well separated from the internal standard.The linear range of chlorpyrifos was 0.01-2 μg/ml in blood.The limit of detection and limit of quantification were estimated at 0.002 and 0.01μg/ml,respectively.The inter-and intra-day precisions,accuracy,and recovery were assessed to verify this method.The results showed that the developed method is rapid,sensitive,and reliable.It is suitable for the determination of chlorpyrifos in forensic toxicological analysis and clinical diagnosis.Xinhua Dai Fei Fan Yi Ye Fan Chen Zhigui Wu Xiang Lu Qingtao Wei Jianxia Chen Youyi Yan Linchuan Liao 2017Journal of Forensic Science and Medicine2017,3,1:0
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