本文在Higher Order Concerns(HOCs) 和 Lower Order Concerns(LOCs)系统概念指导下,通过对实验写作文本采集与分析,结合HOCs和LOCs写作分类系统,提出大学英语写作教学阶梯式分级教学模式,旨在分层、系统地进行大学英语写作知识教授与...本文在Higher Order Concerns(HOCs) 和 Lower Order Concerns(LOCs)系统概念指导下,通过对实验写作文本采集与分析,结合HOCs和LOCs写作分类系统,提出大学英语写作教学阶梯式分级教学模式,旨在分层、系统地进行大学英语写作知识教授与技能训练,打造大学英语写作教学金课,提高学生大学英语书面表达能力。展开更多
In the field work of populationbased research, 3 groups of eyes were graded by 2 observers in LOCS Ⅱ. The reproducibility of LOCS Ⅱwas evaluated by agreements(85%-100%) and k values(0.661-1) obtained in our study. T...In the field work of populationbased research, 3 groups of eyes were graded by 2 observers in LOCS Ⅱ. The reproducibility of LOCS Ⅱwas evaluated by agreements(85%-100%) and k values(0.661-1) obtained in our study. The satisfying results show that LOCS Ⅱis not only easy to be learned and to be applied consistently by different observers, but also good reproducibility in the field work. The longitudinal cataract study is going to be performed in our plan.展开更多
Background:Renalfibrosis is an important process in the development of chronic kidney disease.Understanding the pathogenesis andfinding effective treatments for renalfibrosis is crucial.This study aims to investigate whe...Background:Renalfibrosis is an important process in the development of chronic kidney disease.Understanding the pathogenesis andfinding effective treatments for renalfibrosis is crucial.This study aims to investigate whether a newly discovered long non-coding RNA(lncRNA)called LOC103694972 could be a potential target for treatingfibrosis of NRK-49F cells.Methods:LncRNA Chip was used to identify differentially expressed lncRNAs between TGF-β1-induced NRK-49F cells and normal cells.The dual-luciferase assay confirmed the binding between miR-29c-3p and signal transducer and activator of transcription(STAT3),as well as between miR-29c-3p and lncRNA LOC103694972.Si-LOC103694972 and miR-29c-3p mimic were then transfected into TGF-β1-induced NRK-49F cells.Results:The study found that LOC103694972 was highly expressed in TGF-β1-induced NRK-49F cells.These cells exhibited increased cell length and activity compared to the control group.The expression levels of Collagen I,α-Smooth muscle actin(α-SMA),and tissue inhibitor of metalloproteinase(TIMP-1)were increased,while matrix Metalloproteinase 2(MMP2)and matrix Metalloproteinase 9(MMP9)expression was decreased.However,transfection with si-LOC103694972 and miR-29c-3p mimics restored cell morphology and reduced cell viability.This led to a decrease in the levels of Collagen I,α-SMA,and TIMP-1,as well as an increase in MMP2 and MMP9 expression.Additionally,TGF-β1-induced NRK-49F cells transfected with miR-29c-3p mimics activated the STAT3-Smad3/CTGF pathway.Conclusion:Based on thesefindings,lncRNA LOC103694972 shows promise as a target for treating renalfibrosis.It negatively regulates miR-29c-3p and activates the STAT3-Smad3/CTGF pathway.展开更多
文摘本文在Higher Order Concerns(HOCs) 和 Lower Order Concerns(LOCs)系统概念指导下,通过对实验写作文本采集与分析,结合HOCs和LOCs写作分类系统,提出大学英语写作教学阶梯式分级教学模式,旨在分层、系统地进行大学英语写作知识教授与技能训练,打造大学英语写作教学金课,提高学生大学英语书面表达能力。
文摘In the field work of populationbased research, 3 groups of eyes were graded by 2 observers in LOCS Ⅱ. The reproducibility of LOCS Ⅱwas evaluated by agreements(85%-100%) and k values(0.661-1) obtained in our study. The satisfying results show that LOCS Ⅱis not only easy to be learned and to be applied consistently by different observers, but also good reproducibility in the field work. The longitudinal cataract study is going to be performed in our plan.
基金This work was supported by the Hunan Provincial Education Department General Project Research Fund(No.20C1412)the Hunan Graduate Scientific Research Innovation Project(No.CX2018B474)the National Famous Elderly Chinese Medicine Experts Xinyu Chen Inheritance Workshop Construction Project(No.[2022]75).
文摘Background:Renalfibrosis is an important process in the development of chronic kidney disease.Understanding the pathogenesis andfinding effective treatments for renalfibrosis is crucial.This study aims to investigate whether a newly discovered long non-coding RNA(lncRNA)called LOC103694972 could be a potential target for treatingfibrosis of NRK-49F cells.Methods:LncRNA Chip was used to identify differentially expressed lncRNAs between TGF-β1-induced NRK-49F cells and normal cells.The dual-luciferase assay confirmed the binding between miR-29c-3p and signal transducer and activator of transcription(STAT3),as well as between miR-29c-3p and lncRNA LOC103694972.Si-LOC103694972 and miR-29c-3p mimic were then transfected into TGF-β1-induced NRK-49F cells.Results:The study found that LOC103694972 was highly expressed in TGF-β1-induced NRK-49F cells.These cells exhibited increased cell length and activity compared to the control group.The expression levels of Collagen I,α-Smooth muscle actin(α-SMA),and tissue inhibitor of metalloproteinase(TIMP-1)were increased,while matrix Metalloproteinase 2(MMP2)and matrix Metalloproteinase 9(MMP9)expression was decreased.However,transfection with si-LOC103694972 and miR-29c-3p mimics restored cell morphology and reduced cell viability.This led to a decrease in the levels of Collagen I,α-SMA,and TIMP-1,as well as an increase in MMP2 and MMP9 expression.Additionally,TGF-β1-induced NRK-49F cells transfected with miR-29c-3p mimics activated the STAT3-Smad3/CTGF pathway.Conclusion:Based on thesefindings,lncRNA LOC103694972 shows promise as a target for treating renalfibrosis.It negatively regulates miR-29c-3p and activates the STAT3-Smad3/CTGF pathway.
文摘目的:利用多中心样本探究长非编码RNA LOC285194在宫颈癌组织中的表达水平及相关内源竞争RNA网络。方法:收集来自GEO、TCGA、ArrayExpress、SRA等数据库中与宫颈癌相关的高通量数据集,利用散点图和独立样本t检验探究各个数据集中LOC285194在宫颈癌组织与非癌宫颈组织对照中的表达差异。同时,合并计算标准化均数差(SMD)以综合评估LOC285194在宫颈癌组织中的表达水平。DIANA-LncBase v3和TargetScan Human v8.0数据库用于预测与LOC285194有靶向关系的miRNA以及相关的mRNA,ENCORI数据库用于计算miRNA与相应靶基因表达的相关性。结果:通过综合计算618例样本(CC样本399例,正常宫颈样本219例)的SMD,结果提示LOC285194在宫颈癌组织中的表达水平显著低于正常对照组织(SMD=-0.43,95%CI-0.61~-0.25,P<0.05)。结合预测以及综合计算SMD,3个与LOC285194相关的miRNA被纳入:hsa-miR-130b-5p、hsa-miR-141-5p和hsa-miR-200a-5p。同时,通过综合计算,hsa-miR-141-5p在宫颈癌组织中的高表达及其靶基因ZNF385D的低表达得到了验证。结论:LOC285194在宫颈癌组织中呈显著的低表达,其可能通过相关的内源竞争RNA机制参与宫颈癌的发生与发展,值得进一步的研究探讨。
