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西酞普兰促进血管发生对脑缺血再灌注大鼠的神经保护作用

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国际脑血管病杂志 2013年第2期21卷 96-101页

作者：付蓓蓓刘煜敏孔朝红程仙送武汉大学中南医院神经内科 430071

目的探讨西酞普兰对局灶性脑缺血再灌注大鼠的神经保护作用及其可能机制。方法75只雄性sprague—Dawley大鼠随机分为假手术组、生理盐水对照组和西酞普兰干预组，每组25只。线栓法制作大鼠局灶性脑缺血再灌注模型。改良神经功能缺损量... 详细信息

目的探讨西酞普兰对局灶性脑缺血再灌注大鼠的神经保护作用及其可能机制。方法75只雄性sprague—Dawley大鼠随机分为假手术组、生理盐水对照组和西酞普兰干预组，每组25只。线栓法制作大鼠局灶性脑缺血再灌注模型。改良神经功能缺损量表评价大鼠神经功能缺损（每组5只）。激光共聚焦技术观察缺血区微血管直径、密度和总面积（每组5只）。酶联免疫吸附法检测血浆血管内皮生长因子（vascular endothelial growth factor，VEGF）浓度（每组5只）。免疫组织化学染色法（每组5只）和蛋白质印迹法（每组5只）检测缺血脑组织VEGF表达。结果模型制作后14d时，西酞普兰干预组神经功能缺损较生理盐水对照组显著改善[（4．39±0．92）分对（6．57±1．13）分，P=0．015]。三维共聚焦血管成像显示，西酞普兰干预组毛细血管直径显著性小于生理盐水对照组[（2．93±0．19）μm对（3．56±0．22）μm；P=0．000]；血管密度显著性高于生理盐水对照组[（232．68±12．54）个／0．002一对（176．26±10．87）个／0．002mm3；P=0．000]；微血管总面积显著性大于生理盐水对照组[（89154±3298）μm2／0．002耐对（75368．14±3519）μm2／0．002mm3；P=0．000]。酶联免疫吸附法显示，西酞普兰干预组血浆VEGF浓度显著性高于生理盐水对照组[（50．35±5．44）pg／ml对（13．75±4．12）pg／ml；P=0．000]。免疫组织化学分析显示，西酞普兰干预组缺血区VEGF表达显著性高于生理盐水对照组（P=0．000）。蛋白质印迹法显示，西酞普兰干预组缺血脑组织VEGF表达显著性高于生理盐水对照组[（0．94±0．18）对（0．62±0．22）；P=0．006]。结论西酞普兰可显著减轻脑缺血再灌注大鼠的神经功能缺损，其机制可能与VEGF介导的血管发生有关。

关键词：西酞普兰脑缺血血管内皮生长因子神经保护药疾病模型动物大鼠

Linguistic Features of Oral English Corpora and Their Implications for English Teaching in Colleges and Universities

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Journal of Contemporary Educational Research 2024年第2期8卷 208-212页

作者： Yanru Li Yu bei Taishan University Taishan 271000Shandong ProvinceChina

The main goal of English teaching in colleges and universities is to cultivate students’ability to use the language,but many students are still unable to complete oral communication fluently after years of *** this reason,teachers need to deeply analyze and study the linguistic features of oral English corpora and formulate reasonable teaching strategies to improve students’oral expression *** paper outlines the linguistic features of oral English corpora,comparatively analyzes the differences between oral English corpora and written English corpora,and explores effective teaching strategies,hoping to provide guidelines for relevant teachers.

关键词： Oral English corpora Linguistic features Colleges and universities English teaching

The key role of myostatin b in somatic growth in fishes derived from distant hybridization

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Science China(Life Sciences) 2024年第7期67卷 1441-1454页

作者： Qingfeng Liu Lujiao Duan bei Li Xuanyi Zhang Fanglei Liu Jianming Yu Yuqin Shu Fangzhou Hu Jingjing Lin Xiaoxia Xiong Shaojun Liu State Key Laboratory of Developmental Biology of Freshwater Fish Hunan Normal UniversityChangsha 410081China College of Life Sciences Hunan Normal UniversityChangsha 410081China

The basic mechanism of heterosis has not been systematically and completely *** previous studies,we obtained three economically important fishes that exhibit rapid growth,WR(WCC♀×RCC♂),WR-Ⅱ(WR♀×WCC♂),and WR-Ⅲ(WR-Ⅱ♀×4nAU♂),through distant ***,the mechanism underlying this rapid growth remains *** this study,we found that WR,WR-Ⅱ,and WR-Ⅲshowed muscle hypertrophy and higher muscle protein and fat contents compared with their parent species(RCC and WCC).Candidate genes responsible for this rapid growth were then obtained through an analysis of 12 muscle ***,the mRNA level of mstnb(myostatin b),which is a negative regulator of myogenesis,was significantly reduced in WR,WR-Ⅱ,and WR-Ⅲcompared with the parent *** verify the function of mstnb,a mstnb-deficient mutant RCC line was generated using the CRISPR-Cas9 *** average body weight of mstnb-deficient RCC at 12 months of age was significantly increased by 29.57%compared with that in wild-type ***,the area and number of muscle fibers were significantly increased in mstnb-deficient RCC,indicating hypertrophy and ***,the muscle protein and fat contents were significantly increased in mstnb-deficient *** molecular regulatory mechanism of mstnb was then revealed by transcription profiling,which showed that genes related to myogenesis(myod,myog,and myf5),protein synthesis(PI3K-AKT-mTOR),and lipogenesis(pparγand fabp3)were highly activated in hybrid fishes and mstnb-deficient *** study revealed that low expression or deficiency of mstnb regulates somatic growth by promoting myogenesis,protein synthesis,and lipogenesis in hybrid fishes and mstnb-deficient RCC,which provides evidence for the molecular mechanism of heterosis via distant hybridization.

关键词： distant hybridization heterosis somatic growth myostatin b genome editing

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弗雷格的知识论图景:从真是对象的观点看

自然辩证法研究 2024年第9期40卷 55-61页

作者：高贝贝华南师范大学哲学与社会发展学院广州510631

“知识”与“真”紧密相连。从“真是对象”的观点看,“思想”“判断”“真”“知识”之间的关系得以清晰刻画。判断作为识别“真”的方式,判断行为以非判断的方式将句子的指称与作为对象的“真”相同一。命题知识是由对作为对象的“真... 详细信息

“知识”与“真”紧密相连。从“真是对象”的观点看,“思想”“判断”“真”“知识”之间的关系得以清晰刻画。判断作为识别“真”的方式,判断行为以非判断的方式将句子的指称与作为对象的“真”相同一。命题知识是由对作为对象的“真”的认识产生的,这种认识是由识别“真”的能力之知构成的。基于此,弗雷格的知识论图景得以建立,它与当代知识论的思想相兼容,为刻画知识三元定义,为理解人们的认知活动提供一种独特的分析方式。弗雷格知识论图景有望使得能力之知、对象之知和命题之知紧密相连,在一定程度上弥补了弗雷格在知识论领域解释的空白。

关键词：弗雷格真对象判断知识

METTL5 promotes gastric cancer progression via sphingomyelin metabolism

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World Journal of Gastrointestinal Oncology 2024年第5期16卷 1925-1946页

作者： Ya-Qiong Zhang Jian Li Zhe Qin De-Ming Li Fang-Zhou Ye Song-Hua bei Xiao-Hong Zhang Li Feng Endoscopy Center Minhang Hospital Affiliated to Fudan UniversityShanghai 201100China

BACKGROUND The treatment of gastric cancer(GC)has caused an enormous social burden *** studies have reported that N6-methyladenosine(m6A)is closely related to tumor ***5 is a m6A methyltransferase that plays a pivotal role in maintaining the metabolic stability of ***,its aberrant regulation in GC has not been fully *** To excavate the role of METTL5 in the development of *** METTL5 expression and clinicopathological characteristics were analyzed via The Cancer Genome Atlas dataset and further verified via immunohistochemistry,western blotting and real-time quantitative polymerase chain reaction in tissue microarrays and clinical *** tumor-promoting effect of METTL5 on HGC-27 and AGS cells was explored in vitro by Cell Counting Kit-8 assays,colony formation assays,scratch healing assays,transwell assays and flow *** tumor-promoting role of METTL5 in vivo was evaluated in a xenograft tumor *** EpiQuik m6A RNA Methylation Quantification Kit was used for m6A ***,liquid chromatography-mass spectrometry was used to evaluate the association between METTL5 and sphingomyelin metabolism,which was confirmed by Enzyme-linked immunosorbent assay and rescue *** addition,we investigated whether METTL5 affects the sensitivity of GC cells to cisplatin via colony formation and transwell *** Our research revealed substantial upregulation of METTL5,which suggested a poor prognosis of GC *** METTL5 expression indicated distant lymph node metastasis,advanced cancer stage and pathological *** increased level of METTL5 correlated with a high degree of m6A ***5 markedly promotes the proliferation,migration,and invasion of GC cells in ***5 also promotes the growth of GC in animal ***5 knockdown resulted in significant changes in sphingomyelin metabolism,which implies that METTL5 may impact the development of GC via sphin

关键词： Gastric cancer METTL5 Sphingomyelin metabolism Cisplatin

Traditional Chinese medicine Pien-Tze-Huang ameliorates LPS-induced sepsis through bile acid-mediated activation of TGR5-STAT3-A20 signalling

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Journal of Pharmaceutical Analysis 2024年第4期14卷 601-614页

作者： bei Li Yong Zhang Xinyuan Liu Ziyang Zhang Shuqing Zhuang Xiaoli Zhong Wenbo Chen Yilin Hong Pingli Mo Shuhai Lin Shicong Wang Chundong Yu State Key Laboratory of Cellular Stress Biology School of Life SciencesXiamen UniversityXiamen361102China fujian Pien Tze Huang Enterprise Key Laboratory of Natural Medicine Research and Development ZhangzhouFujian363000China Xiang'an Hospital of Xiamen University School of MedicineXiamen UniversityXiamen361005China Department of Cardiology Xiamen Key Laboratory of Cardiac ElectrophysiologyXiamen Institute of Cardiovascular DiseasesThe First Affiliated Hospital of Xiamen UniversitySchool of MedicineXiamen UniversityXiamen361003China

Pien Tze Huang(PZH),a class-1 nationally protected traditional Chinese medicine(TCM),has been used to treat liver diseases such as hepatitis;however,the effect of PZH on the progression of sepsis is ***,we reported that PZH attenuated lipopolysaccharide(LPS)-induced sepsis in mice and reduced LPS-induced production of proinflammatory cytokines in macrophages by inhibiting the activation of mitogen-activated protein kinase(MAPK)and nuclear factor-kappa B(NF-κB)***,PZH stimulated signal transducer and activator of transcription 3(STAT3)phosphorylation to induce the expression of A20,which could inhibit the activation of NF-κB and MAPK *** of the bile acid(BA)receptor G protein-coupled bile acid receptor 1(TGR5)in macrophages abolished the effects of PZH on STAT3 phosphorylation and A20 induction,as well as the LPS-induced inflammatory response,suggesting that BAs in PZH may mediate its anti-inflammatory effects by activating ***,deprivation of BAs in PZH by cholestyramine resin reduced the effects of PZH on the expression of phosphorylated-STAT3 and A20,the activation of NF-κB and MAPK signalling,and the production of proinflammatory cytokines,whereas the addition of BAs to cholestyramine resin-treated PZH partially restored the inhibitory effects on the production of proinflammatory ***,our study identifies BAs as the effective components in PZH that activate TGR5-STAT3-A20 signalling to ameliorate LPS-induced sepsis.

关键词： Pien Tze Huang Bile acids Sepsis Inflammation TGR5 STAT3-A20 signalling

Intelligent diagnostic model for pterygium by combining attention mechanism and MobileNetV2

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International Journal of Ophthalmology(English edition) 2024年第7期17卷 1184-1192页

作者： Mao-Nian Wu Kai He Yi-bei Yu Bo Zheng Shao-Jun Zhu Xiang-Qian Hong Wen-Qun Xi Zhe Zhang School of Information Engineering Huzhou UniversityHuzhou 313000Zhejiang ProvinceChina Zhejiang Province Key Laboratory of Smart Management and Application of Modern Agricultural Resources Huzhou UniversityHuzhou 313000Zhejiang ProvinceChina School of Mathematical Information Shaoxing UniversityShaoxing 312000Zhejiang ProvinceChina Shenzhen Eye Institute Shenzhen Eye HospitalJinan UniversityShenzhen 518040Guangdong ProvinceChina

AIM:To evaluate the application of an intelligent diagnostic model for ***:For intelligent diagnosis of pterygium,the attention mechanisms—SENet,ECANet,CBAM,and Self-Attention—were fused with the lightweight MobileNetV2 model structure to construct a tri-classification *** study used 1220 images of three types of anterior ocular segments of the pterygium provided by the Eye Hospital of Nanjing Medical *** classification models—VGG16,ResNet50,MobileNetV2,and EfficientNetB7—were trained on the same dataset for *** evaluate model performance in terms of accuracy,Kappa value,test time,sensitivity,specificity,the area under curve(AUC),and visual heat map,470 test images of the anterior segment of the pterygium were ***:The accuracy of the MobileNetV2+Self-Attention model with 281 MB in model size was 92.77%,and the Kappa value of the model was 88.92%.The testing time using the model was 9ms/image in the server and 138ms/image in the local *** sensitivity,specificity,and AUC for the diagnosis of pterygium using normal anterior segment images were 99.47%,100%,and 100%,respectively;using anterior segment images in the observation period were 88.30%,95.32%,and 96.70%,respectively;and using the anterior segment images in the surgery period were 88.18%,94.44%,and 97.30%,***:The developed model is lightweight and can be used not only for detection but also for assessing the severity of pterygium.

关键词： deep learning attention mechanism pterygium intelligent diagnosis

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可能世界理论视域下的跨界叙事

文艺理论研究 2024年第1期44卷 157-164页

作者：邱蓓深圳技术大学外国语学院

跨界是一种特殊的叙事现象,是指文学作品中的人物、情节、场景等从一个叙事空间迁移到另一个叙事空间。借助可能世界理论中的“跨界同一性”(transworld identity)和“客观对应物”(counterpart)这两个核心概念,可以把跨界叙事划分为纵... 详细信息

跨界是一种特殊的叙事现象,是指文学作品中的人物、情节、场景等从一个叙事空间迁移到另一个叙事空间。借助可能世界理论中的“跨界同一性”(transworld identity)和“客观对应物”(counterpart)这两个核心概念,可以把跨界叙事划分为纵向跨界叙事和横向跨界叙事两大类型,其中纵向跨界又可以分为下降跨界叙事和上升跨界叙事,而横向跨界叙事则可以细分为同文本横向跨界叙事和跨文本横向跨界叙事。利用可能世界理论的方法对跨界叙事问题进行系统的分类研究,可以从新的视角审视元小说、平行世界、衍生、戏仿、挪用等后现代文学现象,探讨跨界叙事产生的效果。

关键词：纵向跨界叙事横向跨界叙事可能世界理论跨界叙事同一体客观对应物

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富氮气调--磷化氢的可供替换技术

粮油食品科技 2024年第3期32卷 55-68页

作者： Manjree AGARWAL James NEWMAN Yan-yu LI Li GU bei-bei LI Yong-lin REN 李燕羽(译) 西澳大利亚政府化学中心澳大利亚珀斯WA 6102 CBH澳大利亚谷物有限公司澳大利亚珀斯WA 6000 默多克大学环境和生命科学学院澳大利亚珀斯WA 6150 国家粮食和物资储备局科学研究院粮食储运研究所北京100037 国家粮食和物资储备局科学研究院粮食储运研究所

在粮食储藏上利用氮气的方法已经有30多年的历史,但直到最近经济有效的变压吸附(PSA)和膜分离(MS)制氮设备的出现,才使得该技术在储粮上使用成为可能。本研究首先在25、30和35℃、99%、98%和97%氮气的环境下,对小麦、大麦、燕麦、羽扇... 详细信息

在粮食储藏上利用氮气的方法已经有30多年的历史,但直到最近经济有效的变压吸附(PSA)和膜分离(MS)制氮设备的出现,才使得该技术在储粮上使用成为可能。本研究首先在25、30和35℃、99%、98%和97%氮气的环境下,对小麦、大麦、燕麦、羽扇豆和油菜籽中的花斑皮蠹、赤拟谷盗、谷蠹和米象成虫和非成虫虫态进行了为期4、3和2周的实验室生物测定。然后在终端用户LakeGrace和CBH(Cooperative BulkHandling)谷物进出口公司Albany出口港码头开展实仓验证,测定小麦、大麦和油菜籽中不同储粮害虫虫种和油菜籽瓢虫和肖叶甲类两种田间害虫的防治效果。同时对处理后的粮食品质进行了测定。实验结果表明,害虫死亡率随着氧气浓度降低、暴露时间和温度的增加而增加,富氮低氧在低温条件下不能100%致死花斑皮蠹幼虫。氮气处理对磷化氢抗性和敏感品系储粮害虫防治效果没有差异。与其他粮种相比,在油菜籽中的防治效果更好。各种粮种的水分含量、蛋白质、含油量、淀粉和籽粒颜色品质指标均未受到影响。成功开发了富氮低氧商业规模应用模式,为磷化氢高抗性害虫治理提供了解决方案,满足市场日益增长对无害虫和无化学残留粮食的需求。

关键词：气调储藏害虫治理磷化氢抗药性粮食品质应用模式