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On Some Mathematical Connections between the Cyclic Universe, Inflationary Universe, p-Adic Inflation, p-Adic Cosmology and Various Sectors of Number Theory
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作者 Michele Nardelli 《Journal of Modern Physics》 2024年第11期1869-1958,共90页
This paper is a review, a thesis, of some interesting results that have been obtained in various research concerning the “brane collisions in string and M-theory” (Cyclic Universe), p-adic inflation and p-adic cosmo... This paper is a review, a thesis, of some interesting results that have been obtained in various research concerning the “brane collisions in string and M-theory” (Cyclic Universe), p-adic inflation and p-adic cosmology. In Section 2, we have described some equations concerning cosmic evolution in a Cyclic Universe. In Section 3, we have described some equations concerning the cosmological perturbations in a Big Crunch/Big Bang space-time, the M-theory model of a Big Crunch/Big Bang transition and some equations concerning the solution of a braneworld Big Crunch/Big Bang Cosmology. In Section 4, we have described some equations concerning the generating ekpyrotic curvature perturbations before the Big Bang, some equations concerning the effective five-dimensional theory of the strongly coupled heterotic string as a gauged version of N=1five-dimensional supergravity with four-dimensional boundaries, and some equations concerning the colliding branes and the origin of the Hot Big Bang. In Section 5, we have described some equations regarding the “null energy condition” violation concerning the inflationary models and some equations concerning the evolution to a smooth universe in an ekpyrotic contracting phase with w>1. In Section 6, we have described some equations concerning the approximate inflationary solutions rolling away from the unstable maximum of p-adic string theory. In Section 7, we have described various equations concerning the p-adic minisuperspace model, zeta strings, zeta nonlocal scalar fields and p-adic and adelic quantum cosmology. In Section 8, we have shown various and interesting mathematical connections between some equations concerning the p-adic inflation, the p-adic quantum cosmology, the zeta strings and the brane collisions in string and M-theory. Furthermore, in each section, we have shown the mathematical connections with various sectors of Number Theory, principally the Ramanujan’s modular equations, the Aurea Ratio and the Fibonacci’s numbers. 展开更多
关键词 String theory M-theory Cyclic Cosmology p-Adic and Adelic Analysis Number theory Ramanujan’s Modular equations
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Exercise-induced modulation of miR-149-5p and MMP9 in LPS-triggered diabetic myoblast ER stress: licorice glycoside E as a potential therapeutic target 被引量:1
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作者 Yi Du Hong Liu 《Traditional Medicine Research》 2024年第8期23-34,共12页
Background:This study explores the relationship between endoplasmic reticulum(ER)stress and diabetes,particularly focusing on the impact of physical exercise on ER stress mechanisms and identifying potential therapeut... Background:This study explores the relationship between endoplasmic reticulum(ER)stress and diabetes,particularly focusing on the impact of physical exercise on ER stress mechanisms and identifying potential therapeutic drugs and targets for diabetes-related sepsis.The research also incorporates traditional physical therapy perspectives,emphasizing the genomic insights gained from exercise therapy in disease management and prevention.Methods:Gene analysis was conducted on the GSE168796 and GSE94717 datasets to identify ER stress-related genes.Gene interactions and immune cell correlations were mapped using GeneCard and STRING databases.A screening of 2,456 compounds from the TCMSP database was performed to identify potential therapeutic agents,with a focus on their docking potential.Techniques such as luciferase reporter gene assay and RNA interference were used to examine the interactions between microRNA-149-5p and MMP9.Results:The study identified 2,006 differentially expressed genes and 616 miRNAs.Key genes like MMP9,TNF-α,and IL1B were linked to an immunosuppressive state.Licorice glycoside E demonstrated high affinity for MMP9,suggesting its potential effectiveness in treating diabetes.The constructed miRNA network highlighted the regulatory roles of MMP9,IL1B,IFNG,and TNF-α.Experimental evidence confirmed the binding of microRNA-149-5p to MMP9,impacting apoptosis in diabetic cells.Conclusion:The findings highlight the regulatory role of microRNA-149-5p in managing MMP9,a crucial gene in diabetes pathophysiology.Licorice glycoside E emerges as a promising treatment option for diabetes,especially targeting MMP9 affected by ER stress.The study also underscores the significance of physical exercise in modulating ER stress pathways in diabetes management,bridging traditional physical therapy and modern scientific understanding.Our study has limitations.It focuses on the microRNA-149-5p-MMP9 network in sepsis,using cell-based methods without animal or clinical trials.Despite strong in vitro findings,in vivo studies are needed to confirm licorice glycoside E’s therapeutic potential and understand the microRNA-149-5p-MMP9 dynamics in real conditions. 展开更多
关键词 eR stress diabetes physical exercise gene expression microRNA-149-5p MMp9 licorice glycoside e traditional physical therapy genomics insights
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Theoretical analysis of the double-differential cross-sections of neutron,proton,deuteron,^(3)He,andαfor the p+^(6) Li reaction
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作者 Fang-Lei Zou Xiao-Jun Sun +10 位作者 Jing-Shang Zhang Hai-Rui Guo Yin-Lu Han Rui-Rui Xu Xi Tao Ji-Min Wang Xiao-Dong Sun Yuan Tian Tao Ye Yong-Li Xu Chun-Tian Liang 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2024年第3期181-197,共17页
Based on the unified Hauser–Feshbach and exciton model,which can describe the particle emission processes between discrete energy levels with energy,angular momentum,and parity conservations,a statistical theory of l... Based on the unified Hauser–Feshbach and exciton model,which can describe the particle emission processes between discrete energy levels with energy,angular momentum,and parity conservations,a statistical theory of light nucleus reaction(STLN)is developed to calculate the double-differential cross-sections of the outgoing neutron and light charged particles for the proton-induced^(6) Li reaction.A significant difference is observed between the p+^(6) Li and p+^(7) Li reactions owing to the discrepancies in the energy-level structures of the targets.The reaction channels,including sequential and simultaneous emission processes,are analyzed in detail.Taking the double-differential cross-sections of the outgoing proton as an example,the influence of contaminations(such as^(1) H,^(7)Li,^(12)C,and^(16)O)on the target is identified in terms of the kinetic energy of the first emitted particles.The optical potential parameters of the proton are obtained by fitting the elastic scattering differential cross-sections.The calculated total double-differential cross-sections of the outgoing proton and deuteron at E_(p)=14 MeV agree well with the experimental data for different outgoing angles.Simultaneously,the mixed double differential cross-sections of^(3) He andαare in good agreement with the measurements.The agreement between the measured data and calculated results indicates that the two-body and three-body breakup reactions need to be considered,and the pre-equilibrium reaction mechanism dominates the reaction processes.Based on the STLN model,a PLUNF code for the p+^(6) Li reaction is developed to obtain an ENDF-6-formatted file of the double-differential cross-sections of the nucleon and light composite charged particles. 展开更多
关键词 Statistical theory of light nucleus reaction p%pLUS%^(6)Li reaction Light composite charged particle Double-differential cross-sections Two-body breakup Three-body breakup
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System Assimilation of E-Skills in Tertiary Institutions to Empower Graduates in South Africa
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作者 Oluwaseun Johnson Awosejo Agnieta Pretorius Tendani Justice Lavhengwa 《Journal of Intelligent Learning Systems and Applications》 2024年第3期222-241,共20页
The value of system assimilation is to improve working relationships between tutors and learners while increasing workflow efficiency among tertiary institutions with low operational costs. E-skills could be described... The value of system assimilation is to improve working relationships between tutors and learners while increasing workflow efficiency among tertiary institutions with low operational costs. E-skills could be described as electronic education development, to assist ICT professionals to reach their future career goals and aim to help users boost their ICT skills. In a society that is expanding, it is also a crucial issue to take into account. Researchers have turned their attention to this topic because of its significance and contribution to the empowerment of graduates in digital education. Many scholars have proposed many methods for integrating e-skills into society with impressive results, but the rising rate of graduate unemployment in South Africa is gradually becoming a big worry in our society. A model based on Activity Theory (AT) and e-skills will be developed in our tertiary institution to equip graduates with skills that will increase their employability and provide more individualized work opportunities as part of this study’s effort to solve this issue. With the use of the Statistical Package for the Social Sciences (SPSS) and Cronbach’s Alpha for validity and reliability testing, the study will create an experimental performance to assess the approach taken to measure e-skills in tertiary institutions to empower graduates in South Africa. The study established that system development and e-skilled models for tertiary institutions are growing gradually, especially in South African institutions, that empower graduates with profitable employability with experiences to improve work operation in the industries. In conclusion, system development and e-skills are very demanding but important to empower graduate employability to determine competency in the professional workforce. 展开更多
关键词 System Integration e-Skills empower Graduate Tertiary Institution Activity theory Tertiary Institution
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清肾颗粒对大鼠NRK-52E细胞转分化模型miR-23b和PINK1/Parkin通路的影响 被引量:2
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作者 金华 张叶青 +4 位作者 呼琴 张磊 陈诺 韩燕全 王亿平 《中国药理学通报》 CAS CSCD 北大核心 2024年第1期162-170,共9页
目的 探讨TGF-β1诱导大鼠NRK-52E细胞转分化模型中miR-23b对PINK1/Parkin通路的靶向调节机制,并阐明清肾颗粒含药血清对NRK-52E细胞转分化的干预机理。方法 采用超高效液相色谱(UPLC)指纹图谱法对清肾颗粒进行全指纹图谱分析。构建TGF-... 目的 探讨TGF-β1诱导大鼠NRK-52E细胞转分化模型中miR-23b对PINK1/Parkin通路的靶向调节机制,并阐明清肾颗粒含药血清对NRK-52E细胞转分化的干预机理。方法 采用超高效液相色谱(UPLC)指纹图谱法对清肾颗粒进行全指纹图谱分析。构建TGF-β1诱导大鼠NRK-52E细胞转分化模型,转染siRNA后分为模拟物空载对照组、miR-23b-5p模拟物组、抑制剂空载对照组、miR-23b-5p抑制剂组,观察miR-23b-5p对PINK1表达量的影响。再将NRK-52E细胞分组为正常组、TGF-β1组、清肾颗粒组、miR-23b-mimic-NC组、miR-23b-mimic组、miR-23b-mimic+清肾颗粒组,Western blot法检测NRK-52E细胞中Pink1、Parkin、LC3Ⅱ、Beclin-1、P62、α-SMA蛋白表达,RT-qPCR法检测NRK-52E细胞中miR-23b-5p、Pink1、Parkin、Beclin-1、α-SMA mRNA的表达,双荧光素酶报告基因实验检测miR-23b-5p与PINK1的靶向关系。结果 UPLC指纹图谱法鉴定出清肾颗粒中11个活性成分。miR-23b-5p过表达后,PINK1 mRNA表达量也显著增加(P<0.05);而miR-23b-5p表达沉默后,PINK1 mRNA表达量也显著减少(P<0.05)。双荧光素酶报告显示,Rno-miR-23b-5p能显著下调Rno-PINK1-WT荧光素酶活性(P<0.05),但未能下调突变Rno-PINK1-mut荧光素酶活性(P>0.05)。清肾颗粒含药血清干预实验发现,TGF-β1组的miR-23b-5p、Pink1、Parkin、Beclin-1、LC3Ⅱ表达及LC3Ⅱ/Ⅰ比值均明显低于正常组,P62和α-SMA表达明显高于正常组(P<0.05)。清肾颗粒组和miR-23b-mimic组的miR-23b-5p、Pink1、Parkin、Beclin-1、LC3Ⅱ表达及LC3Ⅱ/Ⅰ比值均明显高于TGF-β1组,P62和α-SMA表达明显低于TGF-β1组(P<0.05)。miR-23b-mimic+清肾颗粒组的表现更优于miR-23b-mimic组(P<0.05)。结论 清肾颗粒能够上调NRK-52E细胞内miR-23b-5p表达,并通过增强PINK1/Parkin通路介导的线粒体自噬活性,抑制NRK-52E细胞转分化进程。 展开更多
关键词 miR-23b-5p pINK1/parkin信号通路 线粒体自噬 NRK-52e细胞 清肾颗粒 上皮细胞转分化
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Analysis of Young Girls’Eagerness to Spend for Disney Virtual Characters Based on Marketing Mix Theory
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作者 HUANG Xiaoyu 《Psychology Research》 2023年第4期188-194,共7页
A virtual character is a design of a fictitious creature with distinctive characteristics created by people,and Disney virtual characters are those Intellectual Property(IP)images that appeared in Disneyland and Disne... A virtual character is a design of a fictitious creature with distinctive characteristics created by people,and Disney virtual characters are those Intellectual Property(IP)images that appeared in Disneyland and Disney movies.This investigation aimed to explore why many younger females are keen to spend money on Disney virtual characters.This paper adopted the Marketing Mix Theory strategy(product,price,placement,and promotion(4P)),and the SWOT analysis method has been utilized.This paper investigated the relationship between the 4Ps and consumers’purchasing intentions,and it turned out that unique design and effective promotion in this Disney case would promote consumers’purchase intention,while the higher price and less accessible placements affected their purchase intentions.Thus,the high price and limited places somewhat inhibit customers’desire to buy;due to the attractiveness of the product itself and the promotion on the internet,the target consumers are still willing to consume. 展开更多
关键词 Marketing Mix theory 4p SWOT(strengths WeAKNeSS opportunities threats)analysis DISNeY virtual characters
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Linc01419调控miR-34a-5p/E2F3轴促进膀胱癌细胞增殖与侵袭
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作者 向威 吕磊 +2 位作者 郑福鑫 袁敬东 吴维 《现代肿瘤医学》 CAS 2024年第16期2921-2929,共9页
目的:探讨长链非编码RNA Linc01419对膀胱癌细胞增殖和侵袭的影响及作用机制。方法:通过UALCAN软件(https://ualcan.path.uab.edu/)分析TCGA数据库中Linc01419在膀胱癌组织与正常膀胱组织中的表达差异;采用实时荧光定量聚合酶链反应(rea... 目的:探讨长链非编码RNA Linc01419对膀胱癌细胞增殖和侵袭的影响及作用机制。方法:通过UALCAN软件(https://ualcan.path.uab.edu/)分析TCGA数据库中Linc01419在膀胱癌组织与正常膀胱组织中的表达差异;采用实时荧光定量聚合酶链反应(real-time fluorescence quantitative polymerase chain reaction,RT-qPCR)检测Linc01419在不同膀胱癌细胞系、22例经病理证实为膀胱癌的手术患者的肿瘤组织及癌旁正常膀胱组织中的表达水平;应用细胞增殖/毒性检测(cell counting kit-8,CCK-8)实验和Transwell小室侵袭实验检测敲低Linc01419表达对膀胱癌细胞增殖与侵袭的影响;采用双荧光素酶报告基因检测法分析Linc01419与miR-34a-5p及miR-34a-5p与E2F3之间的靶向调控关系。结果:UALCAN数据库分析显示相较正常膀胱组织,Linc01419在膀胱癌组织中显著高表达(P<0.001);RT-qPCR分析结果显示相较癌旁正常膀胱组织,Linc01419在22例膀胱癌组织中表达明显上调(P<0.001),与UALCAN数据库分析结果一致;Linc01419在4株膀胱癌细胞中的表达明显高于正常膀胱上皮细胞(P<0.01);敲低Linc01419表达,可显著抑制膀胱癌细胞的增殖、侵袭及N-cadherin、PCNA蛋白的表达,而显著促进E-cadherin的蛋白表达(P<0.05);miR-34a-5p过表达对膀胱癌细胞具有类似的抑制作用;双荧光素酶报告基因实验、RIP及Pull-down实验证实Linc01419可靶向结合miR-34a-5p,而后者进一步介导了对E2F3的靶向调控;抑制miR-34a-5p表达,可显著削弱Linc01419沉默对膀胱癌细胞生物学行为及E-cadherin、N-cadherin、PCNA、E2F3表达的影响。结论:Linc01419在膀胱癌中异常高表达,其通过调控miR-34a-5p/E2F3轴促进膀胱癌细胞增殖和侵袭,很可能是膀胱癌发生、发展过程中的一个重要环节。 展开更多
关键词 膀胱癌 Linc01419 miR-34a-5p e2F3
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p16/Ki-67双染检测、HPVE6/E7mRNA检测在宫颈病变诊断中的价值研究
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作者 彭海兰 梁土玉 +1 位作者 黄之文 李德峰 《黑龙江医药》 CAS 2024年第1期41-44,共4页
目的:探讨p16/Ki-67双染检测、HPVE6/E7mRNA检测在宫颈病变诊断中的价值。方法:选择2021年4月至2023年2月我院收治的605例高危型HPV阳性患者为研究对象,所有患者入院后均进行阴道镜检查与病理活检,取患者细胞学样本分别进行p16/Ki-67双... 目的:探讨p16/Ki-67双染检测、HPVE6/E7mRNA检测在宫颈病变诊断中的价值。方法:选择2021年4月至2023年2月我院收治的605例高危型HPV阳性患者为研究对象,所有患者入院后均进行阴道镜检查与病理活检,取患者细胞学样本分别进行p16/Ki-67双染检测、HPVE6/E7mRNA检测。比较两种方法单独检查与联合检测对宫颈病变阳性检出率的差异;比较三种检查方法对宫颈病变诊断效能的差异。结果:联合检测检出CIN1~3阳性率均高于p16/Ki-67双标记、HPVE6/E7mRNA检测(P<0.05);三种检测方式的浸润癌阳性检出率比较无明显差异(P>0.05)。Kappa检验分析结果显示,p16/Ki-67双标记与HPVE6/E7mRNA检查结果与病理诊断结果具有较好的一致性(Kappa值=0.719,P<0.05);联合检测结果与病理诊断结果具有高度的一致性(Kappa值=0.894,P<0.05)。联合检测对宫颈病变的诊断灵敏度、特异性与准确率高于p16/Ki-67双标记与HPVE6/E7mRNA检查(P<0.05)。结论:p16Ki-67双染与HPVE6/E7mRNA联合检测可准确检出宫颈病变程度,对宫颈病变疾病类型的鉴别可提供充足可靠的数据支持,联合检查的诊断效能较好,对患者后续相关治疗开展有积极指导意义。 展开更多
关键词 p16/Ki-67双标记 HHpVe6/e7mRNA 宫颈病变 鉴别诊断 人乳头瘤病毒
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miR-150-5p靶向ZEB1调控EMT对子宫内膜癌细胞恶性生物学行为的影响
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作者 张桂萍 韩立 彭丽 《实用癌症杂志》 2024年第6期878-882,890,共6页
目的探讨微小RNA-150-5p(miR-150-5p)是否可靶向锌指E盒结合蛋白1(ZEB1)调控子宫内膜癌(EC)细胞上皮间质转化(EMT)进而影响癌细胞的恶性生物学行为。方法RT-qPCR技术检测正常子宫内膜和EC组织中、子宫内膜上皮细胞系hEEC及EC细胞系Ishik... 目的探讨微小RNA-150-5p(miR-150-5p)是否可靶向锌指E盒结合蛋白1(ZEB1)调控子宫内膜癌(EC)细胞上皮间质转化(EMT)进而影响癌细胞的恶性生物学行为。方法RT-qPCR技术检测正常子宫内膜和EC组织中、子宫内膜上皮细胞系hEEC及EC细胞系Ishikawa和HEC-1-A中miR-150-5p相对表达量。过表达miR-150-5p,MTT法、菌落形成实验、伤口愈合实验和Transwell实验分别评估Ishikawa细胞活力、克隆形成、迁移及侵袭能力;双荧光素酶报告基因实验验证miR-150-5p与ZEB1的靶向关系;RT-qPCR检测miR-150-5p及ZEB1 mRNA相对表达量;Western blot技术检测ZEB1、E-钙黏蛋白(E-cadherin)、N-钙黏蛋白(N-cadherin)、波形蛋白(Vimentin)及基质金属蛋白酶9(MMP-9)蛋白表达量。结果与正常子宫内膜组织比较,EC组织中miR-150-5p相对表达量降低(P<0.05);与hEEC细胞比较,HEC-1-A细胞和Ishikawa细胞中miR-150-5p相对表达量降低(P<0.05),Ishikawa细胞中最低(P<0.05)。与空白组比较,miR-150-5p mimics组细胞490 nm处吸光度值、细胞菌落数、迁移数和侵袭数、ZEB1 mRNA和蛋白相对表达量及N-cadherin、Vimentin和MMP-9蛋白相对表达量显著降低,miR-150-5p相对表达量、E-cadherin蛋白相对表达量显著升高(P<0.05)。经生物信息学分析,ZEB1被预测为miR-150-5p的潜在靶基因。结论miR-150-5p可靶向ZEB1抑制癌细胞的恶性生物学行为,其作用机制可能与调控EC细胞EMT进展有关。 展开更多
关键词 微小RNA-150-5p 锌指e盒结合蛋白1 子宫内膜癌 上皮间质转化 恶性生物学行为
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清胆利肝方治疗肝经郁热型带状疱疹临床疗效及对患者T淋巴细胞亚群、血清疼痛物质P、PGE2的影响 被引量:1
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作者 汪华英 许莹 +1 位作者 郭生红 李彤彤 《中国老年学杂志》 CAS 北大核心 2024年第5期1083-1087,共5页
目的 探讨清胆利肝方治疗肝经郁热型带状疱疹临床疗效及对患者血清疼痛物质(S)P、前列腺素(PG)E2的影响。方法 收集肝经郁热型带状疱疹患者144例,根据随机数字表法随机分为对照组及观察组,每组72例,对照组给予阿昔洛韦及甲钴胺进行常规... 目的 探讨清胆利肝方治疗肝经郁热型带状疱疹临床疗效及对患者血清疼痛物质(S)P、前列腺素(PG)E2的影响。方法 收集肝经郁热型带状疱疹患者144例,根据随机数字表法随机分为对照组及观察组,每组72例,对照组给予阿昔洛韦及甲钴胺进行常规治疗,观察组在对照组用药基础上给予清胆利肝方进行治疗,两组均治疗2 w。对比两组临床疗效,检测治疗前后T淋巴细胞亚群、血清SP、PGE2水平的变化情况,同时记录并比较两组疼痛视觉模拟评分(VAS)及不良反应;治疗后随访2个月,观察后遗神经痛(PHN)的发生情况。结果 治疗后,观察组临床总体有效率显著高于对照组(P<0.05);观察组疱疹结痂消退时间及疼痛缓解时间显著短于对照组(P<0.05)。随访2个月,观察组PHN发生率显著低于对照组(P<0.05)。治疗后,两组血清白细胞介素(IL)-4,IL-6,肿瘤坏死因子(TNF)-α及CD8^(+)水平与治疗前相比明显降低,且观察组上述指标显著低于对照组(P<0.05);治疗后,两组血清CD4^(+)及CD4^(+)/CD8^(+)与治疗前相比显著增加,且观察组升高水平显著高于对照组(P<0.05);治疗后与对照组相比,观察组血清中SP、PGE2显著降低(P<0.05)。结论 清胆利肝方可提高肝经郁热型带状疱疹患者T淋巴细胞亚群水平,降低患者血清中PGE2水平及SP含量,有效减少炎症反应并缓解疼痛。 展开更多
关键词 清胆利肝方 肝经郁热型 带状疱疹 T淋巴细胞亚群 疼痛物质p 前列腺素e2
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MiRNA-145-5p inhibits gastric cancer progression via the serpin family E member 1-extracellular signal-regulated kinase-1/2 axis 被引量:1
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作者 Hong-Xia Bai Xue-Mei Qiu +1 位作者 Chun-Hong Xu Jian-Qiang Guo 《World Journal of Gastrointestinal Oncology》 SCIE 2024年第5期2123-2140,共18页
BACKGROUND MicroRNAs(miRNAs)regulate gene expression and play a critical role in cancer physiology.However,there is still a limited understanding of the function and regulatory mechanism of miRNAs in gastric cancer(GC... BACKGROUND MicroRNAs(miRNAs)regulate gene expression and play a critical role in cancer physiology.However,there is still a limited understanding of the function and regulatory mechanism of miRNAs in gastric cancer(GC).AIM To investigate the role and molecular mechanism of miRNA-145-5p(miR145-5p)in the progression of GC.METHODS Real-time polymerase chain reaction(RT-PCR)was used to detect miRNA expression in human GC tissues and cells.The ability of cancer cells to migrate and invade was assessed using wound-healing and transwell assays,respectively.Cell proliferation was measured using cell counting kit-8 and colony formation assays,and apoptosis was evaluated using flow cytometry.Expression of the epithelial-mesenchymal transition(EMT)-associated protein was determined by Western blot.Targets of miR-145-5p were predicated using bioinformatics analysis and verified using a dual-luciferase reporter system.Serpin family E member 1(SERPINE1)expression in GC tissues and cells was evaluated using RT-PCR and immunohistochemical staining.The correlation between SERPINE1 expression and overall patient survival was determined using Kaplan-Meier plot analysis.The association between SERPINE1 and GC progression was also tested.A rescue experiment of SERPINE1 overexpression was conducted to verify the relationship between this protein and miR-145-5p.The mechanism by which miR-145-5p influences GC progression was further explored by assessing tumor formation in nude mice.RESULTS GC tissues and cells had reduced miR-145-5p expression and SERPINE1 was identified as a direct target of this miRNA.Overexpression of miR-145-5p was associated with decreased GC cell proliferation,invasion,migration,and EMT,and these effects were reversed by forcing SERPINE1 expression.Kaplan-Meier plot analysis revealed that patients with higher SERPINE1 expression had a shorter survival rate than those with lower SERPINE1 expression.Nude mouse tumorigenesis experiments confirmed that miR-145-5p targets SERPINE1 to regulate extracellular signal-regulated kinase-1/2(ERK1/2).CONCLUSION This study found that miR-145-5p inhibits tumor progression and is expressed in lower amounts in patients with GC.MiR-145-5p was found to affect GC cell proliferation,migration,and invasion by negatively regulating SERPINE1 levels and controlling the ERK1/2 pathway. 展开更多
关键词 Gastric cancer MicroRNA-145-5p Serpin family e member 1 epithelial-mesenchymal transition proliferation extracellular signal-regulated kinase-1/2
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长链非编码RNA RP11-497E19.1对胃癌细胞增殖和侵袭的影响及机制实验研究
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作者 伍勇彬 黄山 +1 位作者 姚巧玲 张晓伟 《陕西医学杂志》 CAS 2024年第6期729-733,共5页
目的:探讨长链非编码RNA(lncRNA)RP11-497E19.1对胃癌细胞增殖和侵袭的影响及其机制。方法:实时荧光定量PCR(RT-qPCR)检测胃癌HS-746T、BGC823、NCI-N87、SGC7901、AGS细胞和永生化胃上皮细胞GES-1中RP11-497E19.1表达水平,筛选表达最... 目的:探讨长链非编码RNA(lncRNA)RP11-497E19.1对胃癌细胞增殖和侵袭的影响及其机制。方法:实时荧光定量PCR(RT-qPCR)检测胃癌HS-746T、BGC823、NCI-N87、SGC7901、AGS细胞和永生化胃上皮细胞GES-1中RP11-497E19.1表达水平,筛选表达最高的细胞进行后续实验。将HS-746T细胞分为si-NC组和si-RP11-497E19.1组,分别转染阴性对照寡核苷酸或RP11-497E19.1小干扰RNA。集落形成实验和Transwell实验分析转染HS-746T细胞的增殖、侵袭能力。双荧光素酶报告基因实验验证RP11-497E19.1与微小RNA(miR)-545-5p的靶向关系。RT-qPCR检测转染HS-746T细胞miR-545-5p的表达。Western blot检测转染HS-746T细胞间质表皮转化因子(c-Met)/胆绿素还原酶(BVR)/活化复制因子2(ATF-2)分子通路相关蛋白的表达。结果:与GES-1细胞比较,HS-746T、BGC823、NCI-N87、SGC7901、AGS细胞中RP11-497E19.1表达水平均上升,且HS-746T细胞RP11-497E19.1表达水平最高(均P<0.05)。与si-NC组比较,si-RP11-497E19.1组HS-746T细胞活力和细胞侵袭数降低(均P<0.05)。双荧光素酶报告基因实验证实RP11-497E19.1靶向结合miR-545-5p,可负向调控miR-545-5p表达(P<0.05)。与si-NC组比较,si-RP11-497E19.1组HS-746T细胞c-Met/BVR/ATF-2分子通路蛋白c-Met、BVR、p-ATF-2、锌指蛋白1(Snail1)、锌指蛋白2(Snail2)表达降低(均P<0.05)。结论:胃癌细胞中RP11-497E19.1呈高表达,沉默RP11-497E19.1通过靶向miR-545-5p/c-Met/BVR/ATF-2分子通路抑制胃癌HS-746T细胞的增殖及侵袭。 展开更多
关键词 胃癌 长链非编码RNA Rp11-497e19.1 微小RNA-545-5p 细胞增殖 细胞侵袭 分子通路
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miR-30a-5p靶向E2F7阻滞A549细胞周期并抑制其增殖
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作者 鲍祯 乔亚红 《河南医学研究》 CAS 2024年第17期3106-3113,共8页
目的探究miR-30a-5p靶向E2F7调控非小细胞肺癌细胞周期和增殖的机制。方法通过荧光定量(qRT-PCR)验证miR-30a-5p在非小细胞肺癌A549细胞与人正常肺上皮细胞BEAS-2B中的相对表达水平。在线软件预测了miR-30a-5p的靶基因及其靶向结合位点... 目的探究miR-30a-5p靶向E2F7调控非小细胞肺癌细胞周期和增殖的机制。方法通过荧光定量(qRT-PCR)验证miR-30a-5p在非小细胞肺癌A549细胞与人正常肺上皮细胞BEAS-2B中的相对表达水平。在线软件预测了miR-30a-5p的靶基因及其靶向结合位点,双荧光素酶报告基因实验进一步验证miR-30a-5p和E2F7 mRNA 3’UTR区域的靶向关系。其次在A549细胞中分别转染miR-30a-5p模拟物(miR-30a-5p mimics)和miR-30a-5p抑制剂(miR-30a-5p inhibitor),应用CCK-8细胞计数试剂盒检测A549细胞增殖情况,流式细胞术检测A549细胞凋亡和细胞周期。qRT-PCR和免疫印迹检测细胞周期相关基因和肺腺癌相关基因的mRNA和蛋白表达水平。结果miR-30a-5p在A549细胞中表达水平低于BEAS-2B,且miR-30a-5p靶向结合与E2F7 mRNA 3’UTR 514-520位点,抑制E2F7表达。转染miR-30a-5p mimics抑制A549细胞增殖,并促进A549凋亡。将A549细胞周期阻滞在G 1期。调控肺腺癌相关基因TFDP3、CDK1、E2F8、CCNA2和CDC6的mRNA和蛋白表达水平。结论非小细胞肺癌A549细胞中miR-30a-5p通过靶向负调控E2F7的表达,调控TFDP3、CDK1、E2F8、CCNA2和CDC6的mRNA和蛋白表达,抑制A549细胞增殖和细胞周期。 展开更多
关键词 非小细胞肺癌 miR-30a-5p e2F7 基因表达 细胞周期 凋亡
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急性心肌梗死患者外周血内皮细胞微粒中miR-126和P-选择素及E-选择素水平特点及其临床意义
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作者 马清玉 马艺萍 +4 位作者 阿卜拉江·艾合麦提 尼格热·阿力木 帕丽达·玉山江 刘柯 穆叶赛·尼加提 《中国心血管病研究》 CAS 2024年第7期600-605,共6页
目的分析急性心肌梗死(AMI)患者外周血内皮细胞微粒(EMPs)中miR-126、P-选择素、E-选择素的表达水平,探究其与AMI的关系及临床意义。方法选择2021年9月至2022年9月新疆维吾尔自治区人民医院收治的45例AMI患者作为研究组,45例同期健康体... 目的分析急性心肌梗死(AMI)患者外周血内皮细胞微粒(EMPs)中miR-126、P-选择素、E-选择素的表达水平,探究其与AMI的关系及临床意义。方法选择2021年9月至2022年9月新疆维吾尔自治区人民医院收治的45例AMI患者作为研究组,45例同期健康体检者作为对照组。冠状动脉狭窄的评估基于冠状动脉病变数量和Genisi评分。利用流式细胞仪检测外周血中的EMPs,用PCR法检测EMPs中的miR-126表达水平,通过ELISA法测定EMPs中的P-选择素、E-选择素表达。结果AMI组外周血EMPs中miR-126水平低于健康组,P-选择素和E-选择素水平显著高于健康组。外周血EMPs中miR-126水平在三支血管病变组中的表达水平明显低于双支病变组和单支病变组,且外周血EMPs中miR-126水平与Genisi评分呈负相关。外周血EMPs中P-选择素水平在三支血管病变组中的表达水平明显高于双支病变组和单支病变组,且P-选择素与Genisi评分呈正相关。多因素logistic回归显示,外周血EMPs中P-选择素、E-选择是AMI的危险因素。受试者工作曲线(ROC)分析结果显示,外周血EMPs中miR-126、P-选择素及E-选择素单独诊断AMI的效能较低,外周血EMPs中miR-126、P-选择素及E-选择素联合诊断AMI具有良好的诊断效能。结论外周血EMPs中P-选择素和E-选择素是AMI的危险因素。外周血EMPs中miR-126、P-选择素及E-选择素联合对AMI有诊断价值,可作为AMI诊断的生物学标志物。 展开更多
关键词 急性心肌梗死 内皮细胞微粒 MIR-126 p-选择素 e-选择素
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Mo_(2)P Monolayer as a Superior Electrocatalyst for Urea Synthesis from Nitrogen and Carbon Dioxide Fixation:A Computational Study
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作者 Dongxu Jiao Zhongxu Wang +4 位作者 Yuejie Liu Qinghai Cai Jingxiang Zhao Carlos R.Cabrera Zhongfang Chen 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2024年第1期207-214,共8页
Urea synthesis through the simultaneous electrocatalytic reduction of N_(2)and CO_(2)molecules under ambient conditions holds great promises as a sustainable alternative to its industrial production,in which the devel... Urea synthesis through the simultaneous electrocatalytic reduction of N_(2)and CO_(2)molecules under ambient conditions holds great promises as a sustainable alternative to its industrial production,in which the development of stable,highly efficient,and highly selective catalysts to boost the chemisorption,activation,and coupling of inert N_(2)and CO_(2)molecules remains rather challenging.Herein,by means of density functional theory computations,we proposed a new class of two-dimensional nanomaterials,namely,transition-metal phosphide monolayers(TM_(2)P,TM=Ti,Fe,Zr,Mo,and W),as the potential electrocatalysts for urea production.Our results showed that these TM_(2)P materials exhibit outstanding stability and excellent metallic properties.Interestingly,the Mo_(2)P monolayer was screened out as the best catalyst for urea synthesis due to its small kinetic energy barrier(0.35 eV)for C-N coupling,low limiting potential(-0.39 V),and significant suppressing effects on the competing side reactions.The outstanding catalytic activity of the Mo_(2)P monolayer can be ascribed to its optimal adsorption strength with the key^(*)NCON species due to its moderate positive charges on the Mo active sites.Our findings not only propose a novel catalyst with high-efficiency and high-selectivity for urea production but also further widen the potential applications of metal phosphides in electrocatalysis. 展开更多
关键词 C-N coupling density functional theory Mo_(2)p monolayer urea synthesis
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CK34βE12、P504s、Ki-67在前列腺癌的表达及其临床意义分析
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作者 王磊 薛永豪 +2 位作者 刘星达 刘鸿宇 王超奇 《内蒙古民族大学学报(自然科学版)》 2024年第5期43-47,共5页
研究收集95例前列腺癌(PCa)和良性前列腺增生(BPH)患者的样本,采用免疫组化技术检测CK34βE12、P504s、Ki-67的表达情况,旨在分析CK34βE12、P504s、Ki-67在前列腺癌中的表达情况及其临床意义。结果显示:与BPH样本相比,PCa样本中P504s和... 研究收集95例前列腺癌(PCa)和良性前列腺增生(BPH)患者的样本,采用免疫组化技术检测CK34βE12、P504s、Ki-67的表达情况,旨在分析CK34βE12、P504s、Ki-67在前列腺癌中的表达情况及其临床意义。结果显示:与BPH样本相比,PCa样本中P504s和Ki-67的阳性率显著升高,而CK34βE12的阳性率则显著降低。此外,P504s和Ki-67的表达与前列腺癌的病理分期和Gleason评分均相关。因此,本研究认为CK34βE12、P504s、Ki-67联合检测在前列腺癌的诊断及肿瘤进展评估中具有较高价值。 展开更多
关键词 前列腺癌 CK34Βe12 p504S KI-67 临床意义
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微RNA-204-5p、蛋白锌指E盒结合同源盒蛋白1在新生儿肺炎血清中的表达
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作者 白彦红 陈华 +1 位作者 谢影 王少君 《安徽医药》 CAS 2024年第2期362-365,共4页
目的 探讨微RNA-204-5p(miR-204-5p)、蛋白锌指E盒结合同源盒蛋白1(ZEB1)在新生儿肺炎(NP)病儿血清中的表达变化及其在病情评估及预后预测中的临床价值。方法 选取2021年10月至2022年5月张家口市妇幼保健院收治的NP病儿80例为NP组,另选... 目的 探讨微RNA-204-5p(miR-204-5p)、蛋白锌指E盒结合同源盒蛋白1(ZEB1)在新生儿肺炎(NP)病儿血清中的表达变化及其在病情评估及预后预测中的临床价值。方法 选取2021年10月至2022年5月张家口市妇幼保健院收治的NP病儿80例为NP组,另选取同期该院出生的健康新生儿80例为对照组。检测血清miR-204-5p、ZEB1、肌酸激酶(CK)、肌酸激酶同工酶(CK-MB)及C反应蛋白(CRP)水平并比较;采用Pearson法分析NP病儿血清miR-204-5p、ZEB1水平及其与临床指标的相关性;应用受试者操作特征(ROC)曲线分析miR-204-5p、ZEB1及二者联合预测NP不良预后的价值。结果 NP组血清miR-204-5p水平(0.47±0.16比1.01±0.21)、血氧饱和度[(83.99±6.15)%比(95.32±6.74)%]显著低于对照组,血清ZEB1[(4.76±0.71)ng/L比(2.15±0.36)ng/L]、CK、CK-MB[(46.25±12.52)U/L比(23.22±9.64)U/L]及CRP水平[(18.09±4.29)mg/L比(3.31±0.71)mg/L]均显著高于对照组(P<0.05)。重症组血清miR-204-5p水平、血氧饱和度显著低于轻症组,血清ZEB1、CK、CK-MB及CRP水平均显著高于轻症组(P<0.05)。血清miR-204-5p与CPIS评分、CK-MB及CRP水平呈负相关(r=-0.33、-0.30、-0.40,P<0.05),与血氧饱和度呈正相关(r=0.41,P<0.05);血清ZEB1水平与CPIS评分、CK-MB及CRP水平呈正相关(r=0.28、0.37、0.44,P<0.05),与血氧饱和度呈负相关(r=-0.36,P<0.05);血清miR-204-5p与ZEB1水平呈负相关(r=-0.56,P<0.05)。预后不良组血清miR-204-5p水平、血氧饱和度低于预后良好组(P<0.05),血清ZEB1、CK、CK-MB及CRP水平均显著高于预后良好组(P<0.05)。ROC曲线显示,miR-204-5p对NP不良预后预测的AUC为0.89,截断值为0.47,其灵敏度、特异度分别为95.12%、72.41%;ZEB1对NP不良预后预测的AUC为0.92,截断值为5.16,其灵敏度、特异度分别为87.80%、86.21%;二者联合对预后预测的AUC为0.99,明显高于二者单独诊断,其灵敏度、特异度分别为97.56%、94.83%。结论 miR-204-5p在NP病儿血清中低表达,ZEB1在NP病儿血清中高表达,均与NP病情严重程度有关,二者联合对NP不良预后具有较高的预测价值。 展开更多
关键词 新生儿肺炎 e盒结合锌指蛋白1 微RNA-204-5p 蛋白锌指e盒结合同源盒蛋白1 预后
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Functionalized selenium nanoparticles ameliorated acetaminophen-induced hepatotoxicity through synergistically triggering PKCδ/Nrf2 signaling pathway and inhibiting CYP 2E1
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作者 Si Zou Yetao Gong +4 位作者 Xiujie Li Yanbin Wu Jinzhong Wu Jianguo Wu Ka-Hing Wong 《Food Science and Human Wellness》 SCIE CSCD 2024年第2期932-945,共14页
Selenium nanoparticles(SeNPs)have been demonstrated potential for use in diseases associated with oxidative stress.Functionalized SeNPs with lower toxicity and higher biocompatibility could bring better therapeutic ac... Selenium nanoparticles(SeNPs)have been demonstrated potential for use in diseases associated with oxidative stress.Functionalized SeNPs with lower toxicity and higher biocompatibility could bring better therapeutic activity and clinical application value.Herein,this work was conducted to investigate the protective effect of Pleurotus tuber-regium polysaccharide-protein complex funtionnalized SeNPs(PTR-SeNPs)against acetaminophen(APAP)-induced oxidative injure in HepG2 cells and C57BL/6J mouse liver.Further elucidation of the underlying molecular mechanism,in particular their modulation of Nrf2 signaling pathway was also performed.The results showed that PTR-SeNPs could significantly ameliorate APAP-induced oxidative injury as evidenced by a range of biochemical analysis,histopathological examination and immunoblotting study.PTR-SeNPs could hosphorylate and activate PKCδ,depress Keap1,and increase nuclear accumulation of Nrf2,resulting in upregulation of GCLC,GCLM,HO-1 and NQO-1 expression.Besides,PTR-SeNPs suppressed the biotransformation of APAP to generate intracellular ROS through CYP 2E1 inhibition,restoring the mitochondrial morphology.Furthermore,the protective effect of PTR-SeNPs against APAP induced hepatotoxicity was weakened as Nrf2 was depleted in vivo,indicating the pivotal role of Nrf2 signaling pathway in PTR-SeNPs mediated hepatoprotective efficacy.Being a potential hepatic protectant,PTR-SeNPs could serve as a new source of selenium supplement for health-promoting and biomedical applications. 展开更多
关键词 pTR-SeNps(polysaccharide-proteincomplex functionalized selenium nanoparticles) Acetaminophen-induced hepatotoxicity Nuclear factor erythroid 2-related factor 2 Cytochrome p450 enzyme 2e1 Mitochondria
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结肠癌组织微小RNA-3607-3p、细胞周期蛋白E2表达及其与患者术后5年预后关系研究
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作者 王瑜崴 李濛 +1 位作者 康博 杨超 《陕西医学杂志》 CAS 2024年第8期1124-1129,共6页
目的:探讨结肠癌组织微小RNA-3607-3p(miR-3607-3p)、细胞周期蛋白E2(CCNE2)表达及其与患者术后5年预后的关系。方法:选取行结肠癌根治术治疗的88例结肠癌患者癌组织和癌旁组织。RT-qPCR法测定组织miR-3607-3p、CCNE2 mRNA表达。免疫组... 目的:探讨结肠癌组织微小RNA-3607-3p(miR-3607-3p)、细胞周期蛋白E2(CCNE2)表达及其与患者术后5年预后的关系。方法:选取行结肠癌根治术治疗的88例结肠癌患者癌组织和癌旁组织。RT-qPCR法测定组织miR-3607-3p、CCNE2 mRNA表达。免疫组化法检测组织CCNE2蛋白表达。随访术后5年内结肠癌患者生存情况,根据生存情况将患者分为生存组(48例)和病死组(40例)。分析miR-3607-3p、CCNE2 mRNA与TNM分期、肿瘤分化程度、淋巴结转移的相关性。Cox回归分析结肠癌患者术后5年预后的影响因素。绘制受试者工作特征(ROC)曲线分析miR-3607-3p、CCNE2 mRNA对患者术后5年内生存的预测价值。结果:结肠癌组织miR-3607-3p表达水平低于癌旁组织,CCNE2 mRNA表达水平和CCNE2蛋白阳性表达率高于癌旁组织(均P<0.05)。miR-3607-3p低表达和CCNE2 mRNA高表达患者TNM分期Ⅲ期、肿瘤低分化、有淋巴结转移的占比更高(均P<0.05)。结肠癌组织miR-3607-3p与CCNE2 mRNA、TNM分期、淋巴结转移呈负相关,与肿瘤分化程度呈正相关(均P<0.05)。CCNE2 mRNA与TNM分期、淋巴结转移呈正相关,与肿瘤分化程度呈负相关(均P<0.05)。miR-3607-3p高表达、CCNE2 mRNA低表达患者5年总生存率高于miR-3607-3p低表达、CCNE2 mRNA高表达患者(均P<0.05)。病死组TNM分期Ⅲ期、肿瘤低分化、有淋巴结转移的患者占比更高(均P<0.05)。病死组结肠癌组织CCNE2 mRNA和蛋白阳性表达率高于生存组,miR-3607-3p低于生存组(均P<0.05)。TNM分期Ⅲ期、肿瘤低分化、有淋巴结转移、miR-3607-3p低表达、CCNE2 mRNA高表达、CCNE2蛋白阳性表达是影响结肠癌患者术后5年生存的独立危险因素(均P<0.05)。结肠癌组织miR-3607-3p、CCNE2 mRNA两者联合预测患者术后5年内生存的曲线下面积(AUC)高于miR-3607-3p、CCNE2 mRNA单独预测的AUC(均P<0.05)。结论:结肠癌组织miR-3607-3p呈低表达,CCNE2呈高表达,两者与患者术后5年预后有关,有望成为结肠癌患者术后5年内生存的预测指标。 展开更多
关键词 结肠癌 微小RNA-3607-3p 细胞周期蛋白e2 临床病理特征 相关性 预后 预测价值
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基于P-E-R和成本收益模型的青岛市适度人口规模研究
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作者 王彦颖 王旗 《东北师大学报(自然科学版)》 CAS 北大核心 2024年第2期150-160,共11页
基于P-E-R模型,选取反映经济发展和资源利用水平的各项指标,通过加权分析建立回归模型,对青岛市适度人口规模进行了研究,同时从成本收益角度分析构建了适度人口测度模型考察了青岛市的城镇化质量,以新型城镇化发展为焦点,为应对未来人... 基于P-E-R模型,选取反映经济发展和资源利用水平的各项指标,通过加权分析建立回归模型,对青岛市适度人口规模进行了研究,同时从成本收益角度分析构建了适度人口测度模型考察了青岛市的城镇化质量,以新型城镇化发展为焦点,为应对未来人口增长提供了资源配置方案及建议.结果表明:青岛市经济人口承载力优势显著,明显高于资源人口承载力;现阶段青岛市人口发展符合适度人口规模,人口增长存在一定空间,但人口增长速度低于全国水平;预计到2035年,青岛市人口约为1200万人. 展开更多
关键词 适度人口 p-e-R模型 成本收益模型 人口承载力
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