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工程教育中心何以推动科教融合——荷兰4TU工程教育中心的探索性单案例研究
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作者 魏丽娜 张炜 《中国高校科技》 2024年第1期60-66,共7页
工程教育中心作为建立在大学或研究机构中的跨学科交叉合作平台,是连接科学研究与教育实践的纽带,在高质量工程人才培养中发挥着重要作用。荷兰4TU工程教育中心利用4所顶尖理工大学在工程学科和教育领域的独特优势,积极与研发单位、教... 工程教育中心作为建立在大学或研究机构中的跨学科交叉合作平台,是连接科学研究与教育实践的纽带,在高质量工程人才培养中发挥着重要作用。荷兰4TU工程教育中心利用4所顶尖理工大学在工程学科和教育领域的独特优势,积极与研发单位、教育单位、企业部门合作,通过将前沿科学研究彻底融入工程课程设计、教学模式等多个方面,形成了独具一格的科教融合工程人才培养模式。文章从战略目标、组织架构、运行机制、质量保障4个维度详实分析了4TU工程教育中心推动科教融合的内在机制,总结归纳其在主题项目设置、教育共同体形成、课程体系迭代、创新网络构建、内外部质量保障等方面的核心特征,期望对我国科教融合的工程教育改革与建设有所启示。 展开更多
关键词 科教融合 4tu工程教育中心 组织架构 运行机制
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沉默TUFM通过AMPK/mTOR信号通路调控线粒体自噬对肺源性心脏病模型大鼠肺动脉高压的影响 被引量:1
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作者 崔本科 王岩 +2 位作者 卢云凤 杜鹃 翟羽涵 《疑难病杂志》 CAS 2024年第4期478-486,共9页
目的探讨线粒体翻译延伸因子Tu(TUFM)通过线粒体自噬促进肺动脉高压(PAH)血管重塑的作用机制。方法2022年1月—2023年6月于辽宁省人民医院中心实验室进行实验。将36只健康雄性Sprague-Dawley大鼠随机分为空白对照(Ctrl)组、模型(PAH)组... 目的探讨线粒体翻译延伸因子Tu(TUFM)通过线粒体自噬促进肺动脉高压(PAH)血管重塑的作用机制。方法2022年1月—2023年6月于辽宁省人民医院中心实验室进行实验。将36只健康雄性Sprague-Dawley大鼠随机分为空白对照(Ctrl)组、模型(PAH)组、TUFM过表达(OE)组、OE阴性对照(OE-NC)组、短发夹RNA(Sh)敲除TUFM(Sh)组和Sh-NC阴性对照(Sh-NC)组,每组6只。除Ctrl组外,其余大鼠均一次性腹腔注射1%野百合碱(60 mg/kg)诱导心源性肺水肿PAH大鼠模型;大鼠肺动脉平滑肌细胞(PASMC)在低氧(3%O 2)条件下培养24 h模拟体内肺动脉高压微环境,分为常氧(Norm)组、低氧(Hyp)组、小干扰RNA(SiRNA)-1组、SiRNA-2组、Si-NC组、OE-NC组和OE组。右心导管插管和脉冲多普勒超声检测大鼠肺血流动力学;苏木素-伊红染色检测肺小动脉病理结构;免疫荧光共染检测TUFM组织定位;细胞计数法检测细胞增殖;透射电镜观察线粒体结构和自噬小体;蛋白免疫印迹检测TUFM、自噬、凋亡和磷酸腺苷活化蛋白激酶(AMPK)/哺乳动物雷帕霉素靶蛋白(mTOR)通路相关蛋白表达。结果与Ctrl组比较,PAH组大鼠TUFM蛋白表达升高,且主要与PASMC标志物α平滑肌肌动蛋白(α-SMA)在肺小动脉内膜存在共定位,而与内皮细胞标志物CD31无共定位,肺动脉收缩压(PASP)升高,肺动脉血流加速时间(PAAT)缩短,远端肺小动脉管壁呈向心性增厚,管腔狭窄几乎堵塞,TUFM、苄氯素1重组蛋白(BECN1)、人微管相关蛋白轻链3(LC3)II/I和B淋巴细胞瘤2(Bcl2)蛋白表达升高,P62、Bcl2相关X蛋白(Bax)和凋亡酶激活因子(Apaf)蛋白表达降低(P<0.05);与PAH组比较,OE组PASP升高,PAAT缩短,肺小动脉管壁厚度升高,肺动脉TUFM、BECN1、LC3II/I和Bcl2表达升高,P62、Bax和Apaf表达降低(P<0.05);与PAH组比较,Sh组PASP降低,PAAT延长,肺小动脉管壁厚度和管腔狭窄度有所改善,TUFM、BECN1、LC3II/I和Bcl2表达降低,P62、Bax和Apaf表达升高(P<0.05)。与Norm组比较,Hyp组PASMC细胞TUFM蛋白表达升高;与Si-NC组细胞相比,SiRNA-1和SiRNA-2组P62、Bax蛋白表达升高,BECN1、LC3II/I、Bcl2、TUFM表达降低,线粒体结构完整,PASMC细胞增殖活性降低,细胞p-AMPK表达降低,p-mTOR表达升高(P<0.05);与OE-NC组比较,OE组细胞P62和Bax蛋白表达降低,BECN1、LC3II/I、Bcl2和TUFM表达升高,部分线粒体损伤崩解,嵴断裂消失,PASMC细胞增殖活性明显升高,细胞p-AMPK表达升高,p-mTOR表达降低(P<0.05)。结论沉默TUFM可通过激活AMPK/mTOR信号通路促进线粒体自噬加速PAH肺动脉平滑肌细胞凋亡。 展开更多
关键词 肺动脉高压 线粒体翻译延伸因子tu 平滑肌细胞 线粒体自噬 AMPK/mTOR通路 大鼠
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秦川牛宰后成熟过程中线粒体翻译延长因子Tu与能量代谢的关联性分析
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作者 司健芳 高爽 +2 位作者 张静 李亚蕾 罗瑞明 《食品科学》 EI CAS CSCD 北大核心 2024年第17期1-8,共8页
目的:线粒体翻译延长因子Tu(mitochondrial Tu translation elongation factor,TUFM)已被证明参与秦川牛宰后成熟过程中的细胞自噬活动,实验探究该过程中TUFM表达与能量代谢变化的关系。方法:以秦川牛背最长肌为研究对象,测定4℃不同成... 目的:线粒体翻译延长因子Tu(mitochondrial Tu translation elongation factor,TUFM)已被证明参与秦川牛宰后成熟过程中的细胞自噬活动,实验探究该过程中TUFM表达与能量代谢变化的关系。方法:以秦川牛背最长肌为研究对象,测定4℃不同成熟时间(0、2、12、24、48、96、144、192 h)TUFM表达量及含量、葡萄糖(glucose,GLU)、乳酸(lactic acid,LA)、腺苷三磷酸(adenosine triphosphate,ATP)、二磷酸腺苷(adenosine diphosphate,ADP)、单磷酸腺苷(adenosine monophosphate,AMP)6种物质含量以及乳酸脱氢酶(lactate dehydrogenase,LDH)、琥珀酸脱氢酶(succinate dehydrogenase,SDH)、磷酸丙糖异构酶(triose phosphate isomerase,TPI)、苹果酸脱氢酶(malate dehydrogenase,MDH)、细胞色素c氧化酶(cytochrome c oxidase,COX)5种酶活性的变化情况。结果:在秦川牛宰后成熟期间,GLU、ATP、ADP、AMP含量和LDH、SDH、TPI活性均呈下降趋势,TUFM表达量、MDH活性及LA和TUFM含量均呈先上升后下降趋势,COX活性呈先下降后上升再下降趋势。能量代谢各指标和TUFM蛋白主要在宰后初期发挥作用,对宰后初期及宰后中后期分别进行Pearson相关性分析,结果表明,在宰后初期牛背最长肌中TUFM表达量与MDH、LA呈极显著正相关(P<0.01),与ATP、ADP、AMP、LDH、SDH、TPI、COX、GLU呈极显著负相关(P<0.01)。在宰后中后期,TUFM表达与所有指标(GLU、LA、ATP、ADP、AMP、LDH、MDH、SDH、TPI、COX)均呈极显著正相关(P<0.01)。结论:在宰后初期TUFM表达量逐渐增加,可为肌肉细胞提供能量从而用于能量代谢途径,该过程可能是TUFM正向参与细胞自噬所致。在宰后中后期能量短缺时,TUFM可能抑制细胞自噬,优先将能量用于除细胞自噬外的其他重要途径(如能量代谢途径)以维持细胞稳态。综上,在宰后成熟过程中TUFM具有双重作用,可调节细胞自噬为能量代途径提供能量,有助于维持宰后能量代谢持续的时间。 展开更多
关键词 线粒体翻译延长因子tu 能量代谢 秦川牛 细胞自噬
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绵羊肺炎支原体EF-Tu蛋白的原核表达及多克隆抗体制备 被引量:2
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作者 王永飞 邓博文 +5 位作者 刘晓艳 哈尔勒哈·阿曼太 郭嘉栋 周正国 蔡江 李有文 《中国畜牧兽医》 CAS CSCD 北大核心 2024年第2期689-699,共11页
[目的]克隆绵羊肺炎支原体(Mycoplasma ovipneumoniae,Mo)EF-Tu基因,原核表达获得EF-Tu蛋白,制备抗EF-Tu蛋白的兔源多克隆抗体,为研究肺炎支原体EF-Tu蛋白的结构和功能奠定基础。[方法]采用重叠延伸PCR方法将pET-28a-EF-Tu质粒中EF-Tu... [目的]克隆绵羊肺炎支原体(Mycoplasma ovipneumoniae,Mo)EF-Tu基因,原核表达获得EF-Tu蛋白,制备抗EF-Tu蛋白的兔源多克隆抗体,为研究肺炎支原体EF-Tu蛋白的结构和功能奠定基础。[方法]采用重叠延伸PCR方法将pET-28a-EF-Tu质粒中EF-Tu基因中间的TGA密码子突变为TGG,并对测序结果与其他支原体参考株进行相似性比对和遗传进化分析,利用在线软件对其推测的蛋白序列进行生物信息学分析。将突变后的重组质粒转化大肠杆菌BL21(DE3)感受态细胞进行原核表达,经SDS-PAGE和Western blotting鉴定,利用镍柱亲和层析法纯化,以纯化的EF-Tu融合蛋白免疫家兔制备多克隆抗体,采用间接ELISA和Western blotting检测多克隆抗体效价及免疫反应性。[结果]试验成功突变了EF-Tu基因中TGA位点,并构建了融合表达His标签pET-28a-EF-Tu′原核表达载体。生物信息学分析表明,克隆的EF-Tu基因与绵羊肺炎支原体MoGH3-3菌株相似性最高,亲缘关系最近;编码387个氨基酸,无N-糖基化位点和跨膜区域,存在10个丝氨酸、20个苏氨酸、4个酪氨酸磷酸化位点,二级结构由无规则卷曲(35.14%)、α-螺旋(26.87%)、延伸链(26.87%)及β-转角(11.11%)构成。SDS-PAGE和Western blotting结果显示,目的蛋白大小约为43 ku,蛋白纯化浓度为0.615 g/L。ELISA和Western blotting结果显示,制备的多克隆抗体效价可达1∶128 000,能够特异性识别EF-Tu融合蛋白,具有良好的免疫反应性。[结论]本研究成功突变了EF-Tu基因的TGA密码子,原核表达并纯化获得EF-Tu融合蛋白,制备其多克隆抗体效价为1∶128 000,为后续研究肺炎支原体EF-Tu蛋白结构和生物学功能及其疫苗研发提供了试验基础。 展开更多
关键词 绵羊肺炎支原体 重叠延伸PCR EF-tu基因 多克隆抗体
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异氟烷麻醉对小鼠自发肌电及TUS/TMAS诱发肌电的影响
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作者 王茹茹 周晓青 +4 位作者 赵渝卉 刘煦 刘志朋 王欣 殷涛 《中国生物医学工程学报》 CAS CSCD 北大核心 2024年第1期10-17,共8页
经颅超声刺激(TUS)和经颅磁声耦合刺激(TMAS)调控运动皮层效果明显,但受限于清醒状态动物难以束缚,已有研究大多在麻醉状态下进行,对麻醉减弱调控效果的分析集中于中枢神经系统。本研究记录了异氟烷麻醉下24只小鼠的肢体自发肌电和TUS/T... 经颅超声刺激(TUS)和经颅磁声耦合刺激(TMAS)调控运动皮层效果明显,但受限于清醒状态动物难以束缚,已有研究大多在麻醉状态下进行,对麻醉减弱调控效果的分析集中于中枢神经系统。本研究记录了异氟烷麻醉下24只小鼠的肢体自发肌电和TUS/TMAS诱发肌电,定量分析了麻醉对自发肌电和诱发肌电发放率、潜伏期、时长和幅值的影响。结果显示,随着异氟烷输出浓度从0.40%增加至0.75%,每周期内小鼠自发肌电频次减少约50%,肌电发放时长变短,呈抑制状态;TUS/TMAS诱发肌电的成功率分别降低约50%和70%、潜伏期均延长约0.1 s、时长分别缩短约0.3和0.5 s,表明TUS/TMAS对运动皮层的调控效果随麻醉程度的加深而减弱。肢体自发和诱发肌电在发放率和时长上存在关联性特征,提示麻醉状态下小鼠自发肌电抑制状态可能是刺激效果减弱的影响因素之一。 展开更多
关键词 经颅超声刺激(tuS) 经颅磁声耦合刺激(TMAS) 肌电 麻醉
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An Investigation of Moxibustion Treatment for Abscesses in the Song Dynasty:Focusing on the“Jiu Ai Tu” 被引量:1
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作者 WANG Li 《Chinese Medicine and Culture》 2024年第3期241-250,共10页
Jiu Ai Tu(The Moxa Treatment)from the Song dynasty is the earliest surviving painting that focuses on the subject of acupuncture and moxibustion.This paper takes the medical activities depicted in the artwork as its r... Jiu Ai Tu(The Moxa Treatment)from the Song dynasty is the earliest surviving painting that focuses on the subject of acupuncture and moxibustion.This paper takes the medical activities depicted in the artwork as its research object and systematically analyzes the external treatment methods for abscesses during the Song dynasty reflected in Jiu Ai Tu.By examining the understanding of abscesses during that period,the paper explores the level of development in external medicine techniques.By analyzing the medical awareness and behaviors of patients when facing such severe illnesses,it aims to explore the societal cognition and experiences regarding health and disease.The paper attempts to present the folk medical ecology of the Song dynasty represented by Jiu Ai Tu. 展开更多
关键词 Jiu Ai tu ABSCESS Moxibustion method Traditional Chinese medicine Chinese external medicine
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Sunitinib-induced hyperammonemic encephalopathy in metastatic gastrointestinal stromal tumors:A case report
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作者 Takaoki Hayakawa Shinsuke Funakoshi +2 位作者 Yasuo Hamamoto Kenro Hirata Takanori Kanai 《World Journal of Clinical Cases》 SCIE 2023年第31期7629-7634,共6页
BACKGROUND Sunitinib,a multi-targeted tyrosine kinase inhibitor(TKI),has been approved for the salvage treatment of gastrointestinal stromal tumors(GIST).Hyperammonemic encephalopathy is a rare but severe complication... BACKGROUND Sunitinib,a multi-targeted tyrosine kinase inhibitor(TKI),has been approved for the salvage treatment of gastrointestinal stromal tumors(GIST).Hyperammonemic encephalopathy is a rare but severe complication of sunitinib use.Here,we present the case of a 66-year-old male with metastatic GIST without underlying liver cirrhosis who developed sunitinib-induced hyperammonemic encephalopathy.CASE SUMMARY A 66-year-old male with metastatic GIST was admitted because of reduced consciousness.Imatinib was administered as the first-line systemic therapy.He experienced repeated episodes of peritonitis due to tumor perforation,and surgery was performed.Progressive disease was confirmed based on increased liver metastasis,and sunitinib was initiated as a salvage treatment.However,23 d after the third course of sunitinib,he presented to the emergency room with an episode of altered consciousness and behavioral changes.Based on the patient clinical history and examination findings,sunitinib-induced encephalopathy was suspected.Sunitinib was discontinued,and the patient was treated for hyperammonemia.The patient had a normal level of consciousness four days later,and the serum ammonia level gradually decreased.No further neurological symptoms were reported in subsequent follow-ups.CONCLUSION TKI-induced hyperammonemic encephalopathy is potentially life-threatening.Patients receiving TKIs experiencing adverse reactions should undergo systemic evaluation and prompt treatment. 展开更多
关键词 Tyrosine protein kinase inhibitors sunitinib malate Hyperammonemic encephalopathy Gastrointestinal stromal tumors Case report
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The water-soluble TF3 component from Eupolyphaga sinensis Walker promotes tibial fracture healing in rats by promoting osteoblast proliferation and angiogenesis
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作者 Binghao Shao Xing Chen +7 位作者 Jin'ge Du Shuang Zou Zhaolong Chen Jing Wang Huaying Jiang Ruifang Lu Wenlan Wang Chunmei Wang 《Journal of Traditional Chinese Medical Sciences》 CAS 2024年第2期245-254,共10页
Objective:To determine the active components of Eupolyphaga sinensis Walker(Tu Bie Chong)and explore the mechanisms underlying its fracture-healing ability.Methods: A modified Einhorn method was used to develop a rat ... Objective:To determine the active components of Eupolyphaga sinensis Walker(Tu Bie Chong)and explore the mechanisms underlying its fracture-healing ability.Methods: A modified Einhorn method was used to develop a rat tibial fracture model.Progression of bone healing was assessed using radiological methods.Safranin O/fast green and CD31 immunohistochemical staining were performed to evaluate the growth of bone cells and angiogenesis at the fracture site.Methylthiazoletetrazolium blue and wound healing assays were used to analyze cell viability and migration.The Transwell assay was used to explore the invasion capacity of the cells.Tubule formation assays were used to assess the angiogenesis capacity of human vascular endothelial cells(HUVECs).qRT-PCR was used to evaluate the changes in gene transcription levels.Results: Tu Bie Chong fraction 3(TF3)significantly shortened the fracture healing time in model rats.X-ray results showed that on day 14,fracture healing in the TF3 treatment group was significantly better than that in the control group(P=.0086).Tissue staining showed that cartilage growth and the number of H-shaped blood vessels at the fracture site of the TF3 treatment group were better than those of the control group.In vitro,TF3 significantly promoted the proliferation and wound healing of MC3T3-E1s and HUVECs(all P<.01).Transwell assays showed that TF3 promoted the migration of HUVECs,but inhibited the migration of MC3T3-E1 cells.Tubule formation experiments confirmed that TF3 markedly promoted the ability of vascular endothelial cells to form microtubules.Gene expression analysis revealed that TF3 significantly promoted the expression of VEGFA,SPOCD1,NGF,and NGFR in HUVECs.In MC3T3-E1 cells,the transcript levels of RUNX2 and COL2A1 were significantly elevated following TF3 treatment.Conclusion: TF3 promotes fracture healing by promoting bone regeneration associated with the RUNX2 pathway and angiogenesis associated with the VEGFA pathway. 展开更多
关键词 tu Bie Chong Water-solube component Fracture RATS OSTEOBLAST ANGIOGENESIS
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TU1无氧铜/316L不锈钢电子束焊接接头组织与性能
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作者 尹中会 曹志森 +2 位作者 杨建军 马建国 刘振飞 《黑龙江工业学院学报(综合版)》 2023年第5期114-119,共6页
采用真空电子束焊分别对2mm、3mm、5mm不同厚度的TU1无氧铜板材和316L不锈钢板材进行异种材料焊接,并对焊接接头的显微组织和力学性能进行了研究。实验结果表明:焊缝区和热影响区呈现波浪形状,焊缝区存在不同程度的混合组织,接头母材区... 采用真空电子束焊分别对2mm、3mm、5mm不同厚度的TU1无氧铜板材和316L不锈钢板材进行异种材料焊接,并对焊接接头的显微组织和力学性能进行了研究。实验结果表明:焊缝区和热影响区呈现波浪形状,焊缝区存在不同程度的混合组织,接头母材区及热影响区的晶粒大小随铜钢板材厚度的增加而增加。TU1热影响区的晶粒明相比母材区,明显增大。焊缝区的硬度高于母材区。在电子束电流为10mA,加速电压为150kV,焊接速度为15mm/s的焊接参数下,2mm、3mm、5mm厚的接头抗拉强度分别是263MPa、174MPa、141MPa。2mm厚的拉伸式样断裂发生在TU1热影响区,而3mm和5mm厚拉伸式样断裂发生在焊缝处,即2mm厚的TU1无氧铜板材和316L不锈钢板材焊接接头抗拉性能最好。 展开更多
关键词 tu1无氧铜 316L不锈钢 电子束焊接 微观组织 力学性能
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Effect of sunitinib on metastatic gastrointestinal stromal tumor in patients with neurofibromatosis type 1: A case report 被引量:5
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作者 M Emin Kalender Alper Sevinc +2 位作者 Ediz Tutar Akif Sirikci Celalettin Camci 《World Journal of Gastroenterology》 SCIE CAS CSCD 2007年第18期2629-2632,共4页
Gastrointestinal stromal tumor (GIST) represents the most common mesenchymal malignancy of the gastrointestinal (GI) tract. In neurofibromatosis (NF), the increased incidence of tumor needs to be considered even... Gastrointestinal stromal tumor (GIST) represents the most common mesenchymal malignancy of the gastrointestinal (GI) tract. In neurofibromatosis (NF), the increased incidence of tumor needs to be considered even in non-symptomatic individuals. Patients with neurofibromatosis NF type 1 have an increased risk of developing GI tumors including rare types such as GIST. We report a case of GIST in a 53-year-old male patient with neurofibromatosis. The patient was diagnosed with NF four years ago and his medical history revealed that he was hospitalized 5 times with a provisional diagnosis of massive lower gastrointestinal bleeding. GIST was diagnosed at explorative laparotomy and the tumor was 21 cm × 13 cm × 7 cm in size. Immunohistochemical examination showed that vimentin, actin and CDl17 were positive. Computerized tomography showed peritoneal implants three months later. Imatinib mesylate (600 mg/d) was initiated. However, control computerized tomography revealed liver and omental metastasis. The dosage was elevated to 800 mg/d. Despite high dosage, the progression of the metastatic lesions continued in the liver and omentum. The patient started oral sunitinib malate (Sutent~ Pfizer Inc, New York, NY, USA) 50 mg per day for 4 consecutive weeks, followed by 2 wk off per treatment cycle. The metastatic lesions in the liver and omentum were decreased in size after four courses, suggesting that sunitinib is also an effective treatment modality for metastatic GIST in NF patients. 展开更多
关键词 NEUROFIBROMATOSIS Gastrointestinal stromal tumors IMATINIB sunitinib
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Perforation of the colon by invading recurrent gastrointestinal stromal tumors during sunitinib treatment 被引量:4
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作者 Hoon Hur Ae Ryoung Park +3 位作者 Sung Bae Jee Seung Eun Jung Wook Kim Hae Myung Jeon 《World Journal of Gastroenterology》 SCIE CAS CSCD 2008年第39期6096-6099,共4页
The molecular targets of sunitinib are receptor tyrosine kinases (RTKs),and this drug has also been known to exert blocking effects on the activation of KIT,which is similar to the mechanism of action of imatinib. Mor... The molecular targets of sunitinib are receptor tyrosine kinases (RTKs),and this drug has also been known to exert blocking effects on the activation of KIT,which is similar to the mechanism of action of imatinib. Moreover,sunitinib has an additional anti-angiogenic effect through its inhibition of the vascular endothelial growth factor receptor activation. We report here a 70-year-old patient diagnosed with a recurrent gastrointestinal stromal tumor (GIST),which invaded the transverse colon and led to a perforation during sunitinib treatment. A computed tomography scan and 3-dimensional reconstruction showed necrosis of the recurrent hepatic mass and perforation of the invaded transverse colon. After percutaneous drainage of the intraperitoneal abscess,antibiotic treatment and restricted diet,the condition of the patient improved. The present case is the first to report that sunitinib,which is administered to treat GIST resistant to imatinib,can cause unexpected colon perforation and subsequent peritonitis. 展开更多
关键词 Gastrointestinal stromal tumors RECURRENCE sunitinib Intestinal perforation
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The current situation of Sunitinib in treating non-small cell lung cancer 被引量:1
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作者 Qingjie Yang Xiaoyan Sun Ming Guo 《The Chinese-German Journal of Clinical Oncology》 CAS 2012年第3期177-180,共4页
Sunitinib malate is one of the multitargeted tyrosine kinase inhibitor,which are being used in clinic.It can inhibit more than 80 kinds of receptor`s tyrosine kinase,including epidermal growth factor receptor (EGFR),p... Sunitinib malate is one of the multitargeted tyrosine kinase inhibitor,which are being used in clinic.It can inhibit more than 80 kinds of receptor`s tyrosine kinase,including epidermal growth factor receptor (EGFR),platelet-derived growth factor receptors,vascular endothelial growth factor receptors (VEGFR),etc.And tyrosine kinase inhibitor is involved in connection with the generation and progression of many kinds of cancer including lung cancer.Several studies have evaluated the effect of Sunitinib on non-small cell lung cancer (NSCLC),by single agent,continuous daily dosing or in combination with chemotherapeutics (with docetaxel or gemcitabine plus cisplatin),which all showed certain effect.The test of Sunitinib in combination with gemcitabine plus cisplatin for advanced NSCLC shown that at the maximum tolerated dose:oral Sunitinib 37.5 mg/day intermittently (Schedule 2/1:2 weeks on treatment,1 week off treatment) schedule with intravenous infusions of gemcitabine (1000 mg/m2 days 1,8) and cisplatin (80 mg/m2 day 1),administered in 3-week cycles,66.7% patients achieved partial responses.And adverse effects were mild to moderate in severity (grades 1 to 2).Therapy was generally well tolerated.In summary,all the evidence above suggests that Sunitinib may play an important role in the treating of NSCLC. 展开更多
关键词 sunitinib multitargeted tyrosine kinase inhibitor non-small cell lung cancer (NSCLC)
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延伸因子Tu GTP结合域蛋白2功能研究进展
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作者 蓝金鑫 刘羽阳 +2 位作者 刘嘉霖 吴海涛 陈凌 《解放军医学院学报》 CAS 北大核心 2023年第10期1157-1161,共5页
延伸因子Tu GTP结合域蛋白2(elongation factor Tu GTP binding domain containing protein,EFTUD2)是剪接体复合物U5小核糖核蛋白的核心组件,通过调节剪接体的剪接功能进而调控相关基因的表达。本文旨在总结EFTUD2在免疫调节、胚胎发... 延伸因子Tu GTP结合域蛋白2(elongation factor Tu GTP binding domain containing protein,EFTUD2)是剪接体复合物U5小核糖核蛋白的核心组件,通过调节剪接体的剪接功能进而调控相关基因的表达。本文旨在总结EFTUD2在免疫调节、胚胎发育和肿瘤进展等方面的重要作用。 展开更多
关键词 延伸因子tu GTP结合域蛋白2 剪接体 胚胎发育 肿瘤进展 免疫调节
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Sunitinib inhibits renal cancer cell growth and invasion in vitro through Wnt/β-catenin signaling pathway: an experimental study
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作者 Yu Yang Zhi-Qiang Shao Jia-Xiang Guo 《Journal of Hainan Medical University》 2017年第8期31-34,共4页
Objective:To study the effect of sunitinib on renal cancer cell growth and invasion in vitro as well as Wnt/β-catenin signaling pathway.Methods: Renal cancer cell lines ACHN were cultured and processed with different... Objective:To study the effect of sunitinib on renal cancer cell growth and invasion in vitro as well as Wnt/β-catenin signaling pathway.Methods: Renal cancer cell lines ACHN were cultured and processed with different doses of sunitinib (1 μmol/L, 2 μmol/L, 4 μmol/L and 8 μmol/L), and sunitinib-free processing condition was used as negative control. 24 h after processing, the mRNA expression levels of apoptosis genes, invasion genes and Wnt/β-catenin signaling pathways in cells were detected.Results: 24 h after treatment, NPRL2, Bax, caspase-3 and caspase-9 mRNA expression in 1 μmol/L, 2 μmol/L, 4 μmol/L and 8 μmol/L sunitinib groups were significantly higher than those in negative control group while MMP2, MMP9, Vimentin, N-cadherin, Wnt andβ-catenin mRNA expression were significantly lower than those in negative control group;the higher the dose of sunitinib, the higher the NPRL2, Bax, caspase-3 and caspase-9 mRNA expression while the lower the MMP2, MMP9, Vimentin, N-cadherin, Wnt andβ-catenin mRNA expression in cells.Conclusion: Sunitinib can inhibit the Wnt/β-catenin signaling pathway in renal cancer cells to increase the expression of apoptosis genes, inhibit the expression of invasion genes and thereby inhibit the cell growth and invasion. 展开更多
关键词 RENAL cancer sunitinib WNT/Β-CATENIN Apoptosis INVASION
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New Photometric Investigations of G-type Contact Binary TU Boo
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作者 Jing-jing Wang Meng Guo +1 位作者 Lin-qiao Jiang Bin Zhang 《Research in Astronomy and Astrophysics》 SCIE CAS CSCD 2023年第4期103-109,共7页
Two sets of CCD photometric observations for contact binary TU Boo were obtained in 2020 and 2021.Different from its asymmetric light curves published from the literature,our BVRcIc-band curves show that the heights o... Two sets of CCD photometric observations for contact binary TU Boo were obtained in 2020 and 2021.Different from its asymmetric light curves published from the literature,our BVRcIc-band curves show that the heights of maximum are almost equal.These distortions of light curves possibly indicate that the components were active in past 25 yr,but they were stable in the last two years.For total-eclipse binary TU Boo,due to some star-spots on the surface of the components,the physical structure obtained by many investigators are different.Therefore,the symmetric multi-color light curves in 2020,2021 are important for understanding configuration and evolution of this system.By using the Wilson–Devinney program,it is confirmed that TU Boo is an A-type shallow-contact binary with the temperature difference ofΔT=152 K and fill-out of f=14.67%.In the O−C diagram of orbital period analysis,a cyclic oscillation superimposed on a continuous decrease was determined.The long-term decreasing is often explained by the mass transfer from the more massive star to less massive one,this system will evolve into a deeper contact binary with time.The cyclic oscillations computed from much more CCD times of light minimum maybe result from the light-travel time effect via the presence of a third body.These characters of structure,evolution and ternary belong to typical A-type W UMa binaries with spectral G. 展开更多
关键词 (stars:)binaries eclipsing-stars solar-type-stars individual(tu Boo)
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河北赤城话“VP+tu■^(53)”结构
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作者 李文张 张学敏 《吉林省教育学院学报》 2023年第6期180-186,共7页
河北赤城话中“VP+tu■^(53)”结构表示未然、假设等语义,在对VP的选择上,动作动词、存现动词、趋向动词、能愿动词可以进入此结构,动宾短语、状中短语、动补短语、连动短语可以进入此结构,自主性动词和非自主性动词都可以进入,动态形... 河北赤城话中“VP+tu■^(53)”结构表示未然、假设等语义,在对VP的选择上,动作动词、存现动词、趋向动词、能愿动词可以进入此结构,动宾短语、状中短语、动补短语、连动短语可以进入此结构,自主性动词和非自主性动词都可以进入,动态形容词也可以进入此结构。“VP+tu■^(53)”结构主要有VP+tu■^(53)、VO+tu■^(53)、V+tu■^(53)+O、VC+tu■^(53)、VC+O+tu■^(53)等格式类型。“VP+tu■^(53)”结构在时体意义上有将要开始、将要完成等表示未然的意义,在语义上表示条件关系和假设关系。与“的时候”相比,“VP+tu■^(53)”结构语法位置自由度高,语义内涵较为狭窄,在语言使用上存在代际差异。 展开更多
关键词 VP+tu?53 河北赤城话 语法化
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miR-216b-5p对喉癌TU686细胞增殖、迁移和侵袭的影响及其机制
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作者 于宗男 崔颖 《吉林大学学报(医学版)》 CAS CSCD 北大核心 2023年第1期116-121,共6页
目的:探讨miR-216b-5p对喉鳞状细胞癌(LSCC)TU686细胞增殖、迁移、侵袭和凋亡的影响,分析其在喉癌细胞中的靶基因及其可能的作用机制。方法:TU686细胞分为对照组和miR-216b-5p组,对照组细胞通过慢病毒感染无义序列,miR-216b-5p组细胞通... 目的:探讨miR-216b-5p对喉鳞状细胞癌(LSCC)TU686细胞增殖、迁移、侵袭和凋亡的影响,分析其在喉癌细胞中的靶基因及其可能的作用机制。方法:TU686细胞分为对照组和miR-216b-5p组,对照组细胞通过慢病毒感染无义序列,miR-216b-5p组细胞通过慢病毒感染过表达miR-216b-5p。采用实时荧光定量PCR(RT-qPCR)法检测2组细胞中miR-216b-5p表达水平,克隆形成实验检测2组细胞克隆形成率,细胞划痕实验检测2组细胞划痕愈合率,Transwell实验检测2组细胞中侵袭细胞数,流式细胞术检测2组细胞凋亡率。通过TargetScan网站预测miR-216b-5p的潜在靶基因,采用RT-qPCR法检测靶基因mRNA表达水平,双荧光素酶报告基因实验检测miR-216b-5p与靶基因间的靶向关系。结果:慢病毒感染后,与对照组比较,miR-216b-5p组细胞中miR-216b-5p表达水平明显升高(P<0.01)。与对照组比较,miR-216b-5p组细胞克隆形成率和划痕愈合率明显降低(P<0.01),侵袭细胞数明显减少(P<0.01),细胞凋亡率明显升高(P<0.01)。TargetScan网站预测,自噬相关基因5(ATG5)为miR-216b-5p潜在的靶基因,与对照组比较,miR-216b-5p组细胞中ATG5 mRNA表达水平明显降低(P<0.01)。双荧光素酶报告基因实验证实ATG5与miR-216b-5p之间存在靶向关系。结论:miR-216b-5p通过抑制喉癌细胞的增殖、迁移、侵袭和诱导细胞凋亡进而发挥抑癌作用,其机制可能与靶向调节ATG5的表达水平有关。 展开更多
关键词 喉肿瘤 喉鳞状细胞癌 miR-216b-5p tu686细胞 自噬相关基因5
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Eftud2对星形胶质细胞炎症的作用研究
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作者 裴洁 李灏 +1 位作者 付文亮 徐东刚 《解放军医学院学报》 CAS 北大核心 2023年第10期1139-1146,共8页
背景创伤性脑损伤后异常激活的神经炎症是预后不良的主要原因之一,星形胶质细胞在炎症发展中具有促进修复或加重损伤的双重作用。延长因子Tu GTP结合域蛋白2(elongation factor Tu GTP binding domain containing protein,Eftud2)是免... 背景创伤性脑损伤后异常激活的神经炎症是预后不良的主要原因之一,星形胶质细胞在炎症发展中具有促进修复或加重损伤的双重作用。延长因子Tu GTP结合域蛋白2(elongation factor Tu GTP binding domain containing protein,Eftud2)是免疫调节因子,在炎症和肿瘤的发生发展中均具重要作用。目的观察Eftud2对星形胶质细胞炎症的影响。方法小鼠随机分为假手术组和创伤性脑损伤组,使用经典控制性皮质撞击装置构建创伤性脑损伤模型。免疫荧光观察损伤前后S100β和Eftud2含量变化。转棒和平衡木实验评估小鼠造模前后运动功能的改变。实时荧光定量PCR检测损伤前后组织中IL-1β、TNF-α、NLRP3转录水平变化。使用小干扰RNA敲低小鼠星形胶质细胞(mouse astrocyte,MA)中的Eftud2,而后使用脂多糖刺激MA细胞系模拟炎性状态,实时荧光定量PCR检测MA细胞中IL-6、IL-1β、TNF-α、GM-CSF、CXCL-10、IL-10、MyD88转录水平变化,蛋白质免疫印迹检测MA细胞中Eftud2和MyD88的蛋白表达变化。结果动物实验中,与假手术组相比,创伤性脑损伤组小鼠损伤部位Eftud2和S100β荧光强度增加(P<0.01),损伤组织周围炎性因子IL-1β、TNF-α、NLRP3转录水平升高(P<0.01)。细胞实验中,用脂多糖刺激后,MA细胞中Eftud2蛋白表达水平上调(P<0.05),同时Eftud2转录水平和单细胞荧光强度也升高(P<0.01)。给予小干扰RNA后,敲低组MA细胞中Eftud2蛋白表达水平、转录水平和单细胞荧光强度均显著下降(P<0.01)。敲低MA细胞中的Eftud2并给予脂多糖刺激后,实时荧光定量PCR结果显示,IL-6转录水平下降(P<0.05),IL-1β、TNF-α、GM-CSF、MyD88和CXCL-10转录水平也下降(P<0.01),抗炎因子IL-10转录水平升高(P<0.05)。蛋白免疫印迹结果显示,MyD88蛋白表达水平下降(P<0.05)。结论Eftud2可能通过MyD88介导的信号通路调控星形胶质细胞的炎症反应,其作用机制有待进一步研究。 展开更多
关键词 创伤性脑损伤 延长因子tu GTP结合域蛋白2 免疫炎症 星形胶质细胞 髓样分化因子88
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不同厚度的316L/TU1异种材料焊接性能的有限元数值模拟分析
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作者 曹志森 杨建军 《新乡学院学报》 2023年第3期54-58,共5页
为分析不同厚度的316L/TU1异种材料的焊接性能,利用双椭球体热源与高斯面热源的复合热源模型,分别对2 mm、3 mm、5 mm3种不同厚度的316L/TU1铜钢薄板真空电子束焊接进行了数值模拟研究,获得了其电子束焊接温度场与应力场的分布特征,并... 为分析不同厚度的316L/TU1异种材料的焊接性能,利用双椭球体热源与高斯面热源的复合热源模型,分别对2 mm、3 mm、5 mm3种不同厚度的316L/TU1铜钢薄板真空电子束焊接进行了数值模拟研究,获得了其电子束焊接温度场与应力场的分布特征,并进行了试验验证。结果表明,模拟获得的熔池形貌与实际熔池形貌基本一致,验证了所建立的热源模型在计算电子束焊缝形貌特征中的可行性。 展开更多
关键词 316L tu1 电子束焊接 SYSWELD仿真 数值模拟
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康复新液联合沙利度胺防治鼻咽癌患者放射性口腔黏膜炎的临床效果
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作者 龚丹 刘艳 +1 位作者 付舒敏 姚兆鹏 《实用临床医学(江西)》 CAS 2024年第3期10-13,29,共5页
目的 探究康复新液联合沙利度胺预防鼻咽癌(NPC)患者放射性口腔黏膜炎(ROM)的临床效果。方法选取2021—2022年就诊于南昌大学第二附属医院的NPC患者60例,采用随机数字表法分为试验组和对照组,各30例。对照组自放疗开始,每日使用复方漱... 目的 探究康复新液联合沙利度胺预防鼻咽癌(NPC)患者放射性口腔黏膜炎(ROM)的临床效果。方法选取2021—2022年就诊于南昌大学第二附属医院的NPC患者60例,采用随机数字表法分为试验组和对照组,各30例。对照组自放疗开始,每日使用复方漱口液含漱和沙利度胺片口服,试验组在对照组基础上加用康复新液,2组均治疗至放疗结束。比较2组ROM发生情况、放射口腔受量、客观缓解率及不良反应的发生情况。结果 第4、6、8周时,试验组ROM的发生率显著低于对照组(P<0.05),且整个放疗期间试验组3、4级ROM的发生率也低于对照组(P<0.05)。2组口腔照射剂量体积的平均剂量、V30、V40、V50、V55、客观缓解率及不良反应发生率比较,差异均无统计学意义(P>0.05)。结论 康复新液联合沙利度胺可降低NPC患者ROM的发生率并减轻其严重程度。 展开更多
关键词 康复新液 沙利度胺 放射性口腔黏膜炎 鼻咽癌
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