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mtOR失调导致的自噬缺陷可促进肾结石形成

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中华医学杂志 2021年第38期101卷 3126-3126页

作者：简钟宇(编译) Unno R kawabata t taguchi K 四川大学华西医院泌尿外科不详

肾结石发病率高,与生活方式息息相关。然而除了外科干预外,肾结石的药物治疗发展缓慢。研究已经证实炎症和氧化应激能增加草酸钙(CaOx)晶体对肾小管细胞(RtCs)的粘,促进肾结石的形成。因此,减轻细胞损伤和炎症反应可以作为抑制肾结石形... 详细信息

肾结石发病率高,与生活方式息息相关。然而除了外科干预外,肾结石的药物治疗发展缓慢。研究已经证实炎症和氧化应激能增加草酸钙(CaOx)晶体对肾小管细胞(RtCs)的粘,促进肾结石的形成。因此,减轻细胞损伤和炎症反应可以作为抑制肾结石形成的一种策略。而在抗细胞损伤的保护机制中,自噬与泛素蛋白酶体系统是主要的细胞降解途径。当细胞准备进行结构重塑时,自噬上调。

关键词：泛素蛋白酶体系统肾小管细胞细胞损伤外科干预肾结石自噬草酸钙氧化应激

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苦木素类B、C、D、E环型化合物的全合成

中国药科大学学报 1985年第4期 1-7页

作者： Grieco P A 屠树滋 kawabata t Kim H 南京药学院有机化学教研室

苦木素类(Quassinoids)化合物具有明显的抗肿瘤活性。根据对化学结构与生理活性关系的研究,以及这类化合物基本骨架中A环与D环的类似性,本文设计了全合成B、C、D、E环型化合物(50)a)、b)、c)、d),并报道了由环已酮[2]甲酸乙酯为原料合... 详细信息

苦木素类(Quassinoids)化合物具有明显的抗肿瘤活性。根据对化学结构与生理活性关系的研究,以及这类化合物基本骨架中A环与D环的类似性,本文设计了全合成B、C、D、E环型化合物(50)a)、b)、c)、d),并报道了由环已酮[2]甲酸乙酯为原料合成中间体α-羟基内酯(48)的三十五步反应。原料经鲁宾森环合反应得B、C环。用乙烯基锂对不饱和酮(21)进行1,4加成,引入乙烯基,然后用NBS溴化,进一步在DMF中加热,可形成E环。内酯(42)经水解得到酸,再用碘进行卤内酯化得D环。

关键词：苦木素类全合成抗肿瘤活性

评估乳腺t2W MRI上乳腺水肿的表现有助于诊断隐匿性炎性乳腺癌并能预测新辅助化疗的预后

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国际医学放射学杂志 2021年第3期44卷 356-356页

作者： t.L.Harada t.Uematsu K.Nakashima t.kawabata S.Nishimura K.takahashi 杨淑杰

摘要基于t2W MRI上乳腺水肿的表现可预测隐匿性炎性乳腺癌（IBC）和乳腺癌预后,即使是没有IBC临床症状的病人,这种预测都有助于提前制定治疗方案、指导预后,同时

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Energy exchange between charged relativistic fluids in f(t) gravity

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Communications in theoretical Physics 2024年第10期76卷 108-120页

作者： Z Yousaf U A Khokhar Nasser Bin turki t Suzuki Department of Mathematics University of the Punjab Quaid-i-Azam Campus Department of Mathematics College of Science King Saud University Department of Regional Management Faculty of Management Fukushima College

this study focuses on the effects of a polytropic fluid on a charged gravitational source within f(t) gravity, where t is the torsion scalar. We investigate how the electromagnetic field affects the flow of energy in spherically symmetric and static celestial objects that contain relativistic fluids. By using the gravitational decoupling technique, we analyze the effects of polytropic fluid on the dynamics of the gravitational source, accompanied by the matching of the interior geometry with an exterior at the hypersurface Σ. Finally, with the help of the tolman ⅡV solution, we observe the conduct of energy conditions with the existence of charge using f(t)field equations and got the intended outcomes.

关键词： anisotropy complexity energy exchange hydrodynamics self-gravitating systems

Evaluation of periglacial landforms and formation of soil properties on the Mount Honaz,SW türkiye

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Journal of Mountain Science 2024年第9期21卷 3047-3067页

作者： SERİN Soner UNCU Levent DEDE Volkan tÜRKEŞMurat Institute of Social Sciences İstanbul Universityİstanbul 34119Türkiye Department of Geography BilecikŞeyh Edebali UniversityBilecik 11234Türkiye Department of Geography Ardahan UniversityArdahan 75002Türkiye Center for Climate Change and Policy Studies Boğaziçi Universityİstanbul 34342Türkiye

the main aim of this study is to explain periglacial processes on the summits of Mount Honaz(2571 m a.s.l.),define periglacial landforms,and determine the relationships between morphometric features and topographic *** circles,stony earth circles,non sorted steps,and non sorted stripes were identified on the summits of Mount ***'s correlation coefficient(r)and linear regression analyses were performed by taking metric measurements from 125 periglacial landforms to describe their morphometric features(length,width,height)of periglacial landforms and explain the relationships between them and topographic factors(elevation,slope).to explain the relationships between periglacial landforms and soil properties,soil samples from 11 periglacial landforms were taken and *** landforms,which continue to develop on the summits of Mount Honaz today,have been evaluated with present climate *** of soil samples indicates a notable impact of parent material on the genesis of periglacial *** high ratio of organic matter in mud circle and non sorted step landforms and the high lime ratio in stony earth circle landforms prove a strong relationship between the formation mechanisms of landforms and the soil ***,it is consistent with the findings obtained from the analysis that severe periglacial processes and washing and scavenging events are experienced more on the northern slopes.

关键词： Periglacial processes and geomorphology Soil analysis Morphometric analysis Mount Honaz türkiye

Preparation of microparticles and nanoparticles using membrane-assisted dispersion,micromixing,and evaporation processes

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Particuology 2024年第1期84卷 30-44页

作者： Goran t.Vladisavljevic Chemical Engineering Department Loughborough UniversityLoughboroughLeicestershire LE113TUUnited Kingdom

Synthetic microporous membranes are increasingly used for energy-efficient and controlled production of micro-and nanoparticles and micro-and nanoemulsions with tuneable morphology and physico-chemical properties through various micromixing,emulsification,and evaporation *** emul-sification processes,the membrane pores are used for dispersed phase injection and size-controlled generation of droplets and droplet-templated *** micromixing processes,membrane is utilised as a micromixer for mixing two miscible liquids,usually solvent and antisolvent-rich solutions,which leads to the creation of supersaturation and subsequent nanoprecipitation or *** mem-brane evaporation processes,membrane is used to prevent phase dispersion while allowing efficient molecular diffusion of solvent and/or antisolvent vapour through gas-filled *** dispersion processes can be operated continuously by decoupling shear stress on the membrane surface from cross flow using tube insets,flow pulsations,swirling flow,membrane oscillations or membrane *** generation and solidification can be performed continuously in a single pass by connecting membrane module with a downstream *** dispersion processes can be used for pro-duction of nanoparticles such as nanovesicles(liposomes,micelles,ethosomes,and niosomes),nanogels,polymeric,lipid and metallic nanoparticles,and *** main advantages of membrane-assisted particle generation are in low energy consumption,controlled geometry and hydrodynamic conditions at the microscale level,flexible throughput due to modular and scalable design of membrane devices,and a wide choice of available microporous membranes with various wall porosities,wetta-bilities,pore sizes,and pore morphologies to suit different applications.

关键词： Nanoparticles Microparticles Nanoemulsions Microemulsions Microporous membrane Crystallisation Flash nanoprecipitation Emulsification Zero liquid discharge

Late Ordovician Mass Extinction: Earth, fire and ice

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National Science Review 2024年第1期11卷 51-65页

作者： David A.t.Harper Palaeoecosystems Group Department of Earth SciencesDurham University

the Late Ordovician Mass Extinction was the earliest of the ‘big’ five extinction events and the earliest to affect the trajectory of metazoan life. two phases have been identified near the start of the Hirnantian period and in the middle. It was a massive taxonomic extinction, a weak phylogenetic extinction and a relatively benign ecological extinction. A rapid cooling, triggering a major ice age that reduced the temperature of surface waters, prompted a drop in sea level of some 100 m and introduced toxic bottom waters onto the shelves. these symptoms of more fundamental planetary processes have been associated with a range of factors with an underlying driver identified as volcanicity. Volcanic eruptions, and other products, may have extended back in time to at least the Sandbian and early Katian, suggesting the extinctions were more protracted and influential than hitherto documented.

关键词： Ordovician LOME paleoecology palaeobiogeography biotas

Neutron and Alpha Structure in Neutron Deficient Nuclei in Astrophysics

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原子核物理评论 2016年第2期33卷 212-216页

作者： S.Kubono 何建军 H.Yamaguchi D.M.Kahl S.Hayakawa t.teranishi S.Cheribini M.Gulino Y.K.Kwon t.Hashimoto Y.Wakabayashi N.Iwasa S.Kato t.Komatsubara D.N.Binh L.H.Khiem N.N.Duy t.kawabata C.Spitaleri G.G.Rapisarda M.La Cognata L.Lamia R.G.Pizzone S.Romano A.Coc N.de Sereville F.Hammache G.Kiss S.Bishop Institute of Modern Physics Chinese Academy of Sciences RIKEN Nishina Center Center for Nuclear Study University of Tokyo Department of Physics Kyushu University Laboratori Nazionali del Sud Istituto Nazionale di Fisica Nucleare Institute for Basic Science 70Yuseong-daero 1689-gil RIKEN Nishina Center 2-1 Hirosawa Department of Physics Tohoku University Department of Physics Yamagata University Institute of Physics Vietnam Academy for Science and Technology Department of Physics Kyoto University IN2P3 Institute for Nuclear Research (MtA-AtOMKI) tUM

the paper includes discussions on the important role of neutron and alpha configurations in proton-rich nuclei in nuclear astrophysics in terms of nucleosynthesis under extremely high-temperature hydrogenburning conditions. the νp-process, which is supposed to take place at the very early epoch of type II supernovae, has considerable neutrons and alphas together with protons. the alpha-induced reactions on proton-rich unstable nuclei in the light mass regions is expected to play a crucial role, but very few of them were investigated well yet because of the experimental difficulties. Specifically, I report our recent experimental effort for the breakout process from the pp-chain region,~7Be(α, γ)^(11)C(α,p)^(14)N under the νp-process. the neutron-induced reactions on proton-rich nuclei, which is even more a challenging subject, were investigated previously for very few nuclei. One possible experimental method is the trojan Horse Method(tHM). We successfully have applied tHM to the ^(18)F(n,α)^(14)N reaction study with an unstable beam of ^(18)F.

关键词： alpha-and neutron-induced stellar reactions in proton-rich nuclear region νp-process pp-chain breakout nuclear cluster structures in astrophysics low-energy RI beam

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Beta-lactam antibiotic resistance among Escherichia coli isolates from patients with urinary tract infections in Vietnam:A systematic review and meta-analysis

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Asian Pacific Journal of tropical Medicine 2024年第6期17卷 243-255,I0001-I0003页

作者： Dat t Nguyen Princess Margaret Cancer Centre University Health NetworkTorontoOntarioCanada

Objective:to investigate the evolving patterns of antimicrobial resistance against beta-lactam antibiotics in Escherichia coli isolates from urinary tract infection patients in Vietnam,covering the period from 2005 to ***:29 Descriptive studies published between 2010 and 2022 in English and Vietnamese were included in the *** on resistance rates to beta-lactam antibiotics,including cephalosporins and carbapenems,were extracted and *** pooled resistance rates were calculated using random-effects *** trends in resistance were assessed using linear regression ***:Among the beta-lactam antibiotics studied,Escherichia coli exhibited varying levels of resistance,with cephalosporins showing higher resistance rates compared to *** pooled resistance rates were 66%for cefotaxime,65%for ceftriaxone,54%for ceftazidime,and 56%for *** contrast,carbapenems demonstrated lower resistance rates,with weighted pooled resistance rates ranging from 3%to 4%for meropenem,ertapenem,and *** rates were also observed for amoxicillin/clavulanate(35%),ticarcillin/clavulanate(26%),and piperacillin/tazobactam(12%).Significant annual increases in resistance were noted for imipenem(0.56%,Pthis study highlights the critical issue of antimicrobial resistance in urinary tract infections in Vietnam and emphasizes the importance of prudent antibiotic use and the regular monitoring of resistance *** insights are useful for guiding healthcare professionals in optimizing treatment strategies and for policymakers in formulating evidence-based clinical guidelines to combat antibiotic resistance effectively.

关键词： Antimicrobial resistance Urinary tract infection Vietnam