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Role of lipids in the control of autophagy and primary cilium signaling in neurons

Neural Regeneration Research 2024年第2期19卷 264-271页

作者： María Paz Hernández-Cáceres daniela Pinto-Nuñez Patricia Rivera Paulina Burgos Francisco Díaz-Castro Alfredo Criollo Maria Jose Yañez Eugenia Morselli Instituto de Investigación en Ciencias Odontológicas(ICOD) Facultad de OdontologíaUniversidad de ChileSantiagoChile Department of Basic Sciences Faculty of Medicine and ScienceUniversidad San SebastiánSantiagoChile Physiology Department Faculty of Biological SciencesPontificia Universidad Católica de ChileSantiagoChile Advanced Center for Chronic Diseases(ACCDiS) Facultad de Ciencias Químicas y Farmacéuticas&Facultad de MedicinaUniversidad de ChileSantiagoChile Autophagy Research Center SantiagoChile

The brain is,after the adipose tissue,the organ with the greatest amount of lipids and diversity in their composition in the human *** neurons,lipids are involved in signaling pathways controlling autophagy,a lysosome-dependent catabolic process essential for the maintenance of neuronal homeostasis and the function of the primary cilium,a cellular antenna that acts as a communication hub that transfers extracellular signals into intracellular responses required for neurogenesis and brain development.A crosstalk between primary cilia and autophagy has been established;however,its role in the control of neuronal activity and homeostasis is barely *** this review,we briefly discuss the current knowledge regarding the role of autophagy and the primary cilium in *** we review the recent literature about specific lipid subclasses in the regulation of autophagy,in the control of primary cilium structure and its dependent cellular signaling in physiological and pathological conditions,specifically focusing on neurons,an area of research that could have major implications in neurodevelopment,energy homeostasis,and neurodegeneration.

关键词： autophagic flux cholesterol fatty acids GPCR lysosomal storage diseases neurons NPC1 phosphoinositides primary cilium

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Rescue of p53 functions by in vitro-transcribed mRNA impedes the growth of high-grade serous ovarian cancer

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Cancer Communications 2024年第1期44卷 101-126页

作者： Monika Raab Izabela Kostova Samuel Peña-Llopis daniela Fietz Monika Kressin Seyed Mohsen Aberoumandi Evelyn Ullrich Sven Becker Mourad Sanhaji Klaus Strebhardt Department of Gynecology Medical SchoolGoethe-UniversityFrankfurt am MainGermany Translational Genomics in Solid Tumors West German Cancer CenterUniversity HospitalEssenGermany German Cancer Consortium(DKTK) EssenGermany German Cancer Research Center(DKFZ) HeidelbergGermany Histology and Embryology Institute for Veterinary AnatomyGiessenGermany Franfurt Cancer Institute(FCI) Goethe UniversityFrankfurt am MainGermany German Cancer Consortium(DKTK) Partner site Frankfurt/Mainza partnership between DKFZ and University Hospital FrankfurtFrankfurt am MainGermany Experimental Immunology Department for Children and Adolescents MedicineUniversity Hospital FrankfurtGoethe UniversityFrankfurt am MainGermany

Background:The cellular tumor protein p53(TP53)is a tumor suppressor gene that is frequently mutated in human *** various cancer types,the very aggressive high-grade serous ovarian carcinoma(HGSOC)exhibits the high-est prevalence of TP53 mutations,present in>96%of *** intensive efforts to reactivate p53,no clinical drug has been approved to rescue p53 *** this study,our primary objective was to administer in vitro-transcribed(IVT)wild-type(WT)p53-mRNA to HGSOC cell lines,primary cells,and ortho-topic mouse models,with the aim of exploring its impact on inhibiting tumor growth and dissemination,both in vitro and in ***:To restore the activity of p53,WT p53 was exogenously expressed in HGSOC cell lines using a mammalian vector ***,IVT WT p53 mRNA was delivered into different HGSOC model systems(primary cells and patient-derived organoids)using liposomes and studied for proliferation,cell cycle progression,apoptosis,colony formation,and chromosomal *** alterations induced by p53 mRNA were analyzed using RNA sequencing in OVCAR-8 and primary HGSOC cells,followed by ingenuity path-way *** vivo effects on tumor growth and metastasis were studied using orthotopic xenografts and metastatic intraperitoneal mouse ***:Reactivation of the TP53 tumor suppressor gene was explored in differ-ent HGSOC model systems using newly designed IVT mRNA-based *** introduction of WT p53 mRNA triggered dose-dependent apoptosis,cell cycle arrest,and potent long-lasting inhibition of HGSOC cell *** analysis of OVCAR-8 cells upon mRNA-based p53 reactivation revealed significant alterations in gene expression related to p53 signaling,such as apoptosis,cell cycle regulation,and DNA *** p53 function concurrently reduces chromosomal instability within the HGSOC cells,under-scoring its crucial contribution in safeguarding genomic integrity by moderating the baselin

关键词： apoptosis cell cycle chromosomal instability HGSOC metastatic intraperitoneal mouse model HGSOC orthotopic Xenograft model high-grade serous ovarian cancer in vitro-transcribed p53-mRNA liposomal IVT mRNA delivery system patient-derived organoid patient-derived primary cancer cell

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Dose-response effect of pre-exercise carbohydrates under muscle glycogen unavailability:Insights from McArdle disease

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Journal of Sport and Health Science 2024年第3期13卷 398-408页

作者： Pedro L.Valenzuela Alfredo Santalla Lidia B.Alejo Andrea Merlo Asuncion Bustos Laura Castellote-Belles Roser Ferrer-Costa Nicola A.Maffiuletti David Barranco-Gil Tomas Pinos Alejandro lucia Physical Activity and Health Research Group(“PaHerg”) Research Institute of Hospital“12 de Octubre”(“imas12”)Madrid 28041Spain Department of Systems Biology University of AlcalaMadrid 28871Spain Department of Sport and Computer Science Section of Physical Education and SportsFaculty of SportUniversidad Pablo de OlavideSevilla 41013Spain EVOPRED Research Group Universidad Europea de CanariasTenerife 38300Spain Faculty of Sport Sciences Universidad Europea de MadridMadrid 28670Spain Gait&Motion Analysis Laboratory Sol et Salus HospitalTorre Pedrera di Rimini(RN)47922Italy Department of Clinical Biochemistry Laboratoris ClınicsHospital Universitari Vall d’HebronBarcelona 08035Spain Human Performance Lab Schulthess ClinicZurich 8008Switzerland Biomedical Research Networking Center on Rare Disorders(CIBERER) Barcelona 08035Spain Mitochondrial and Neuromuscular Disorders Unit Vall d’Hebron Institut de RecercaUniversitat Autonoma de BarcelonaBarcelona 08035Spain

Background:This study aimed to determine the effect of different carbohydrate(CHO)doses on exercise capacity in patients with McArdle disease—the paradigm of“exercise intolerance”,characterized by complete muscle glycogen unavailability—and to determine whether higher exogenous glucose levels affect metabolic responses at the McArdle muscle cell(in vitro)***:Patients with McArdle disease(n=8)and healthy controls(n=9)underwent a 12-min submaximal cycling constant-load bout followed by a maximal ramp test 15 min after ingesting a non-caloric *** a randomized,double-blinded,cross-over design,patients repeated the tests after consuming either 75 g or 150 g of CHO(glucose:fructose=2:1).Cardiorespiratory,biochemical,perceptual,and electromyographic(EMG)variables were ***,glucose uptake and lactate appearance were studied in vitro in wild-type and McArdle mouse myotubes cultured with increasing glucose concentrations(0.35,1.00,4.50,and 10.00 g/L).Results:Compared with controls,patients showed the“classical”second-wind phenomenon(after prior disproportionate tachycardia,myalgia,and excess electromyographic activity during submaximal exercise,all p<0.05)and an impaired endurance exercise capacity(-51%ventilatory threshold and55%peak power output,both p<0.001).Regardless of the CHO dose(p<0.05 for both doses compared with the placebo),CHO intake increased blood glucose and lactate levels,decreased fat oxidation rates,and attenuated the second wind in the ***,only the higher dose increased ventilatory threshold(+27%,p=0.010)and peak power output(+18%,p=0.007).In vitro analyses revealed no differences in lactate levels across glucose concentrations in wild-type myotubes,whereas a doseresponse effect was observed in McArdle ***:CHO intake exerts beneficial effects on exercise capacity in McArdle disease,a condition associated with total muscle glycogen *** of these benefits are dose dependent.

关键词： Endurance Glycogen storage disease Glycogenosis Nutrition Supplement

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The effect of Laves phases and nano-precipitates on the electrochemical corrosion resistance of Mg-Al-Ca alloys under alkaline conditions

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Journal of Magnesium and Alloys 2024年第6期12卷 2447-2461页

作者： Markus Felten Veronika Chaineux Siyuan Zhang Ali Tehranchi Tilmann Hickel Christina Scheu Joshua Spille Marta Lipińska-Chwałek Joachim Mayer Benjamin Berkels Marcus Hans Imke Greving Silja Flenner Sandra Sefa daniela Zander Chair of Corrosion and Corrosion Protection RWTH Aachen UniversityAachen 52072 Germany Max-Planck-Institut für Eisenforschung GmbH Düsseldorf 40237 Germany Central Facility for Electron Microscopy RWTH Aachen UniversityAachen 52074 Germany Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons Forschungszentrum Jülich GmbHJülich 52428Germany Mathematical Image and Signal Processing Aachen Institute for Advanced Study in Computational Engineering ScienceRWTH Aachen UniversityAachen 52062 Germany Materials Chemistry RWTH Aachen UniversityAachen 52074 Germany Institute of Materials Physics Helmholtz-Zentrum HereonGeesthacht 21502 Germany

The electrochemical corrosion mechanisms of Mg alloys were extensively studied in previous investigations of different chemical com-positions,modified surface states and various electrolyte ***,recent research focused on the active state of Mg dissolution,leading to unresolved effects of secondary phases adjacent to a stableα-solid solution passive *** present study investigates the fundamental electrochemical corrosion mechanisms of three different Laves phases with varying phase morphologies and phase fractions in the passive state of Mg-Al-Ca *** microstructure was characterized by(transmission-)electron microscopy and synchrotron-based transmission X-ray *** electrochemical corrosion resistance was determined with a standard three-electrode setup and advanced in-situ flow cell measurements.A new electrochemical activity sequence(C15>C36>α-Mg>C14)was obtained,as a result of a stable passive layer formation on theα-solid ***,nm-scale Mg-rich precipitates were identified within the Laves phases,which tend to inhibit the corrosion kinetics.

关键词： Laves phase STEM Magnesium Corrosion Passive layer

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Bridging the gap: Predicting brain metastasis in breast cancer

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World Journal of Clinical Oncology 2024年第2期15卷 356-359页

作者： daniela Gonsalves Raquel Ciérvide Felipe Couñago Department of Radiation Oncology GenesisCare MadridMadrid 28043Spain Facultad de Medicina Salud y Deporte Universidad Europea de MadridMadrid 28670Spain Department of Radiation Oncology HM HospitalesMadrid 28050Spain

Chen et al explored clinicopathological features and prognostic factors,revealing advanced tumor stage,lung metastases,HER-2 overexpression,and triple-negative status as key *** research connects astrocytes'role in brain metastasis with signaling pathways and the impact of Trastuzumab on HER-2 tumor *** such as positive HER2 status,lack of estrogen receptor expression,and liver metastasis are identified as additional risk *** routine use of magnetic resonance imaging,insights into gene mutations associated with metastasis,and the role of radiotherapy,including prophylaxis possibilities,is controversial in clinical *** these risk factors in a multidisciplinary collaboration is precise for local treatments and targeted therapies,particularly for HER2+tumors,impacting directly on longer survival.

关键词： Brain metastases Breast cancer Clinicopathological features High-risk factors

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Two-dimensional atomically thin Pt layers on MXenes: The role of electronic effects during catalytic dehydrogenation of ethane and propane

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Nano Research 2024年第3期17卷 1251-1258页

作者： Zhe Li Tobias K.Misicko Fan Yang Xiaopeng Liu Zhenwei Wu Xiaoyang Gao Tao Ma Jeffrey T.Miller daniela S.Mainardi Collin D.Wick Zhenhua Zeng Yang Xiao Yue Wu Department of Chemical and Biological Engineering Iowa State University618 Bissell RoadAmesIA 50011USA Institute for Micromanufacturing Louisiana Tech University505 Tech DriveRustonLA 71272USA Davidson School of Chemical Engineering Purdue University480 Stadium Mall DriveWest LafayetteIN 47907USA Michigan Center for Materials Characterization University of Michigan2800 Plymouth RdAnn Arbor MI 48109USA College of Engineering and Science Louisiana Tech UniversityRustonLA 71272USA

Atomically thin Pt nanolayers were synthesized on the surface of Mo2TiC2 MXenes and used for the catalytic dehydrogenation of ethane and propane into ethylene and propylene,two important chemicals for the petrochemical *** compared with Pt nanoparticles,the atomically thin Pt nanolayer catalyst showed superior coke-resistance(no deactivation for 24 h),high activity(turnover frequencies(TOFs)of 0.4–1.2 s^(-1)),and selectivity(>95%)toward ethylene and *** unique Pt nanolayer has a similar geometric surface to Pt nanoparticles,enabling the investigations of the electronic effect on the catalytic performance,where the geometric effect is *** is found that the electronic effect plays a critical role in dehydrogenative product selectivity and catalyst *** metal–support interaction is found dependent on the substrate and metal components,providing wide opportunities to explore high-performance MXene-supported metallic catalysts.

关键词： MXene catalysis alkane dehydrogenation nanolayers

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Dielectric spectroscopy characterization of Naþ ion-conducting polymer nanocomposite system PEO–PVP–NaIO_(4)–TiO_(2)

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Journal of Advanced Dielectrics 2024年第1期14卷 59-73页

作者： Georgi B.Hadjichristov daniela G.Kovacheva Yordan G.Marinov daniela B.Karashanova Todor E.Vlakhov Nicola Scaramuzza Georgi Nadjakov Institute of Solid State Physics Bulgarian Academy of Sciences 72 Tzarigradsko Chaussee Blvd.BG-1784 SofiaBulgaria Institute of General and Inorganic Chemistry Bulgarian Academy of Sciences Acad.Georgi Bonchev Str. 11 bd.BG-1113 SofiaBulgaria Institute of Optical Materials and Technologies“Acad.Jordan Malinowski” Bulgarian Academy of Sciences Acad.Georgi Bonchev Str.bl.109BG-1113 SofiaBulgaria Dipartimento di Fisica Universita degli Studi della Calabria Via P.BucciCubo 33BRende(CS)IT-87036Italy

We studied the effect of titanium dioxide(TiO_(2))nanoparticles(NPs)on dielectric behavior of Naþion-conducting salt-complexed polymer nanocomposite system formed from a binary polymer blend of poly(ethylene oxide)(PEO)and polyvinyl pyrrolidone(PVP),with the addition of both sodium metaperiodate(NaIO_(4))at concentration 10 wt.%and TiO_(2) NPs of size10 nm,at concentrations 1,2,3,4 and 5 wt.%.Free standing nanocomposite PEO/PVP/NaIO_(4)/TiO_(2) films(150m)were characterized at room-temperature by analyzing their complex electrical impedance and dielectric spectra in the range 1 Hz–1 *** the concentration of 3 wt.%of TiO_(2) NPs,both ion conductivity and dielectric permittivity of the PEO/PVP/NaIO_(4)/TiO_(2) ion-conducting dielectrics reach an enhancement by more than one order of magnitude as compared to nanoadditive-free case.

关键词： Dielectric properties sodium-ion-polymer electrolyte systems titanium dioxide(TiO_(2))nanoparticles nanocomposites KWW model

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Sc元素添加对双辊铸轧Al−Cu−Li−Mg−Zr基合金热处理的影响

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Transactions of Nonferrous Metals Society of China 2024年第6期34卷 1759-1773页

作者： Rostislav KRÁLÍK Barbora KŘIVSKÁ lucia BAJTOŠOVÁ Mykhailo STOLBCHENKO Mirko SCHAPER Olexandr GRYDIN Miroslav CIESLAR Department of Physics of Materials Faculty of Mathematics and PhysicsCharles UniversityKe Karlovu 512116PragueCzech Republic Department of Materials Science Faculty of Mechanical EngineeringUniversity of PaderbornWarburger Straße 10033098PaderbornGermany

提出制备含Sc的Al−Cu−Li−Mg−Zr基合金带材的工艺方案。即先采用双辊铸轧技术制备近净形状的3 mm厚带材,再对其进行均匀化/固溶处理。研究两种Al−Cu−Li−Mg−Zr基双辊铸轧合金,其中一种添加质量分数为0.17%的Sc,另一种未添加Sc。两种合金... 详细信息

提出制备含Sc的Al−Cu−Li−Mg−Zr基合金带材的工艺方案。即先采用双辊铸轧技术制备近净形状的3 mm厚带材,再对其进行均匀化/固溶处理。研究两种Al−Cu−Li−Mg−Zr基双辊铸轧合金,其中一种添加质量分数为0.17%的Sc,另一种未添加Sc。两种合金均先在300℃下退火30 min,然后在450℃下退火30 min以及530℃下退火30 min,随后进行室温水淬。前两段退火后组织中生成了细小、弥散的Al_(3)Zr/Al_(3)(Sc,Zr)颗粒。最后的退火步骤起到了均匀化/固溶处理的作用。双辊铸轧材料的细小晶粒结构使含有主要合金元素的原始颗粒在较短的退火时间内溶解。缩短保温时间可以限制表面层中Li的耗尽和Al_(3)Zr/Al_(3)(Sc,Zr)弥散相的明显粗化。铸态含Sc材料已经具有明显细小的晶粒结构,而经均匀化/固溶处理后生成的Al_(3)(Sc,Zr)弥散相抑制了晶粒在高温下发生粗化。在后续180℃下时效处理后,形成了θʹ(Al_(2)Cu)、T1(Al_(2)CuLi)和S'(Al_(2)CuMg)强化相。在峰值时效状态下,屈服强度提高了200 MPa,这一数值与类似直接冷却铸造材料的相当,从而证实了所提方案的合理性。

关键词：显微组织力学性能 Al−Cu−Li基合金 Sc合金化双辊铸轧

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Reliability of Echocardiographic Pulmonary Vascular Resistance to Screen for the New Definition of Precapillary Pulmonary Hypertension in Uncorrected Secundum Atrial Septal Defect

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Congenital Heart Disease 2024年第3期19卷 315-324页

作者： Risalina Myrtha Hasanah Mumpuni Real Kusumanjaya Marsam Dyah Wulan Anggrahini Anggoro Budi Hartopo lucia Kris Dinarti Department of Cardiology and Vascular Medicine Faculty of MedicineUniversitas Sebelas MaretSurakarta57126Indonesia Department of Cardiology and Vascular Medicine Universitas Sebelas Maret HospitalSukoharjo57161Indonesia Department of Cardiology and Vascular Medicine Faculty of MedicinePublic Healthand NursingUniversitas Gadjah MadaYogyakarta55281Indonesia Department of Cardiology and Vascular Medicine Dr.Sardjito HospitalYogyakarta55284Indonesia

Background and Objective:The most feared complication of uncorrected secundum Atrial Septal Defect(ASD)is pulmonary arterial hypertension(PAH).Pulmonary vascular resistance(PVR)is crucial in detecting precapil-lary pulmonary hypertension(PH)to guide the need for PAH-speciﬁc *** is a change in the cut-off value of PVR according to the recently updated PH *** echocardiographic PVR(PVRecho)correlates to PVR by right heart catheterization(RHC)(PVRcath)according to the new guidelines has not been *** aim of this study is to determine the reliability of PVRecho in detecting PAH in Uncorrected Ostium Secundum ASD based on the current updated guideline and to help screen the high PVR ***:429 ostium secun-dum ASD in the COngenital HeARt Disease in Adult and Pulmonary Hypertension(COHARD-PH)registry was divided into three groups according to the *** was calculated using Abbas’Formula and compared the its gold standard,the *** correlation between the two methods was *** Bland-Altman plot was used to analyze the agreement between the two *** operating characteristics(ROC)analysis was used to determine the PVRecho cut-off value for high ***:The majority of the population(63.5%)had high *** gender dominated the study population(84%).PVR_(echo) was signiﬁcantly correlated with PVRcath(r=0.6225,p1.62 WU showed good dis-criminatory power in determining high PVR.

关键词： Pulmonary vascular resistance atrial septal defect echocardiography

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ICF框架下运动疗法对慢性非特异性颈痛效果的Meta分析

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中国康复理论与实践 2024年第7期30卷 778-788页

作者：温艳飞杨露班玥 Ykabaru daniela BERBESI NORIEGA 张郝琪王丽刘华首都体育学院北京市100191

目的基于《国际功能、残疾和健康分类》(ICF)框架,系统评价运动疗法对慢性非特异性颈痛(CNSNP)患者身体结构、功能、活动和参与等方面的干预效果。方法构建PICO架构,系统检索CBM、万方、维普、中国知网、Cochrane Library、Embase、Pu... 详细信息

目的基于《国际功能、残疾和健康分类》(ICF)框架,系统评价运动疗法对慢性非特异性颈痛(CNSNP)患者身体结构、功能、活动和参与等方面的干预效果。方法构建PICO架构,系统检索CBM、万方、维普、中国知网、Cochrane Library、Embase、PubMed和Web of Science等中、英文数据库,纳入有关运动疗法干预CNSNP患者的随机对照试验,时间范围为建库至2024年3月。采用Cochrane偏倚风险评估工具和物理治疗证据数据库(PEDro)量表对纳入文献进行质量评价,采用GRADE对结局指标进行证据质量评价,采用RevMan 5.3进行数据合并和分析,采用Stata 18.0进行偏倚风险评估。结果最终纳入11篇文献,共668例患者。PEDro量表评分5~8分。运动疗法类型包括肌力训练、稳定性训练、本体感觉训练、瑜伽和普拉提等;对照组包括空白对照、物理因子治疗和健康教育。运动疗法可显著增加患者颅椎角(SMD=0.84, 95%CI 0.42~1.26, P <0.001),降低疼痛视觉模拟量表评分(SMD=-2.05,95%CI-2.58~-1.52, P <0.001),提高压力疼痛阈值(MD=112.27, 95%CI 75.03~149.50, P <0.001),提高颈椎前屈(SMD=1.24, 95%CI 0.34~2.15, P=0.007)、侧屈(SMD=1.52, 95%CI 0.40~2.65, P=0.008)关节活动度,提高颈深屈肌耐力(SMD=1.02, 95%CI 0.10~1.94, P=0.03),改善颈椎关节位置觉(SMD=-1.00,95%CI-1.47~-0.53, P <0.001),但对于改善后屈(SMD=0.85, 95%CI-1.04~2.75, P=0.38)、旋转(SMD=1.65, 95%CI-0.35~3.65, P=0.11)关节活动度的效果不显著;运动疗法还能降低患者颈椎功能障碍指数评分(MD=-11.88, 95%CI-16.09~-7.68, P <0.001),对健康调查简表评分效果不显著(MD=19.04, 95%CI-3.00~41.08, P=0.09)。结论运动疗法可以改善CNSNP患者的异常姿势、疼痛、前屈和侧屈运动、颈屈肌耐力和关节位置觉,改善功能障碍,但对提高颈部后屈和旋转运动,改善生活质量方面仍需进一步的研究。

关键词：慢性非特异性颈痛运动国际功能、残疾和健康分类 Meta分析

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