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Increased oxygen consumption and OXpHOS potential in superhealer mesenchymal stem cells

Cell Regeneration 2012年第1期1卷 11-18页

作者： Curtis C Hughey maria p alfaro Darrell D Belke Jeffery N Rottman pampee p Young David H Wasserman Jane Shearer Department of Biochemistry and Molecular Biology Faculty of MedicineUniversity of CalgaryCalgaryABCanadaT2N 1N4 Department of pathology School of MedicineVanderbilt UniversityNashvilleTNUSA37232 Faculty of Kinesiology University of CalgaryCalgaryABCanadaT2N 1N4 Department of Medicine Division of Cardiovascular MedicineSchool of MedicineVanderbilt UniversityNashvilleTNUSA37240 Department of Veterans Affairs Medical Center NashvilleTNUSA37232 Department of Molecular physiology and Biophysics School of MedicineVanderbilt UniversityNashvilleTNUSA37240 University of Calgary KNB Rm 3318.2500 University Dr.NWCalgaryABCanadaT2N 1N4.

Background:Cell-based therapies show promise in repairing cardiac tissue and improving contractile performance following a myocardial *** this,ischemia-induced death of transplanted cells remains a major hurdle to the efficacy of treatment.‘Superhealer’MRL/MpJ mesenchymal stem cells(MRL-MSCs)have been reported to exhibit increased engraftment resulting in reduced infarct size and enhanced contractile *** study determines whether intrinsic differences in mitochondrial oxidative phosphorylation(OXpHOS)assist in explaining the enhanced cellular survival and engraftment of ***:Compared to wild type MSCs(WT-MSCs),mitochondria from intact MRL-MSCs exhibited an increase in routine respiration and maximal electron transport capacity by 2.0-and 3.5-fold,*** routine oxygen utilization is expressed as a portion of maximal cellular oxygen flux,the MRL-MSCs have a greater spare respiratory ***,glutamate/malate-and succinate-supported oxygen consumption in permeabilized cells was elevated approximately 1.25-and 1.4-fold in the MRL-MSCs,***:The results from intact and permeabilized MSCs indicate MRL-MSCs exhibit a greater reliance on and capacity for aerobic *** greater capacity for oxidative metabolism may provide a protective effect by increasing ATp synthesis per unit substrate and prevent glycolysis-mediated acidosis and subsequent cell death upon transplantation into the glucose-and oxygen-deprived environment of the infarcted heart.

关键词： Energetics Mitochondria Oxidative phosphorylation Stem cells

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Ion-conducting Membranes Based on Bacterial Cellulose Nanofibers Modified by poly(sodium acrylate-co-2-acrylamido-2-methylpropanesulfonic acid)

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Chinese Journal of polymer Science 2024年第3期42卷 333-343,I0007页

作者： Elizaveta V.Batishcheva Nikolay N.Smirnov Natalya V.Bobrova maria p.Sokolova Michael A.Smirnov Institute of Macromolecular Compounds Russian Academy of SciencesBolshoy pr.31Saint Petersburg 199004Russia

Green method for preparation of ion-conducting membranes(ICM) based on bacterial cellulose nanofibers(CNF) modified by a copolymer of sodium acrylate and 2-acrylamido-2-methylpropanesulfonic acid was elaborated. FTIR and NMR data confirmed grafting of polyacrylate onto cellulose surface. Formation of porous structure of the ICM was controlled by SEM and AFM. The maximal ionic conductivity of the membranes reaches 1.5 and 3.1 mS·cm^(-1)(60 ℃ and 98% relative humidity) when they are saturated with water or H_2SO_4(1 mol·L^(-1)) electrolyte,respectively. prepared ICM was tested as a separator in a symmetrical supercapacitor with electrodes based on polyaniline hydrogel. The assembled cell demonstrate ability to operate at high current density up to 100 A·g^(-1) maintaining specific capacitance 165 F·g^(-1). Maximal specific capacitance of 289 F·g^(-1) was achieved at current density 1 A·g^(-1). Retaining of 90% of initial capacitance after 10000 of charge-discharge cycles proves high electrochemical stability of prepared ICM.

关键词： Bacterial cellulose Ion conductivity porous membrane Supercapacitor

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Self-healable and Robust Film Based on Electroactive polymer Brush as Electrode for Flexible Supercapacitor

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Chinese Journal of polymer Science 2024年第8期42卷 1049-1059页

作者： maria p.Sokolova Vitaly K.Vorobiov Nikolay N.Smirnov Ivan S.Kuryndin Natalya V.Bobrova Michael A.Smirnov Institute of Macromolecular Compounds Russian Academy of SciencesBolshoy pr.31Saint Petersburg 199004Russia

The aim of this study was to develop self-healable and robust elect roconductive film based on polyaniline copolymer for application as electrode in flexible *** this purpose,the electroconductive polymer brushes(EpB)was *** synthesis of EpB is based on graft polymerizations of acrylamide(AAm)on poly(vinyl alcohol)(pVA)with formation of pVA-pAAm polymer brush and subsequent graft copolymerization of aniline and p-phenylenediamine on pVA-pAAm resulting in formation of EpB with electroconducting copoly(aniline-co-pphenylenediamine)(pAph DA).It was found that the ratio between pVA and pAAm at the first stage greatly influence the electrochemical performance of the *** films were prepared by casting of EpB solution with subsequent *** of electrical current distribution through the film with AFM reveal more uniform distribution of pAphDA in EpB in comparison with reference pVA-pAphDA and pAAm-pAphDA *** was demonstrated that mechanical cha racteristics and electrical conductivity values of films restore at large extent after curring and self-healing under optimal relative humidity level(58%).The flexile supercapacitor cell with EpB film electrodes demon strate specific capacitance 602 mF·cm^(-2)at the current density of 1 mA·cm^(-2)and retention 94%of initial capacitance after 5000 charge/discharge cycles.

关键词： polymer brush polyaniline Flexible supercapacitor Self-healing Electroconducting film

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Impact of multifocal gas-permeable lens designs on short-term choroidal response, axial length, and retinal defocus profile

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International Journal of Ophthalmology(English edition) 2024年第2期17卷 247-256页

作者： Muteb Alanazi patrick Caroline Amane Alshamrani maria Liu Optometry Department College of Applied Medical SciencesKing Saud UniversityRiyadh 14813Saudi Arabia College of Optometry Pacific UniversityForest GroveOregon 97116-1756United States Optometry School University of California at BerkeleyCalifornia 94720United States

AIM:To investigate the impact of multifocal gas permeable contact lens(MFGpCL)in various add power and distance/near area allocation on short-term changes of choroidal thickness(ChT),axial length(AL),and retinal defocus profile in young ***:Seventeen young adults(2 males and 15 females;age 23.17±4.48y)were randomly assigned to wear two designs binocularly with a one-week washout period in *** of four MFGpCL designs were *** designs were distance-center that varied in two add power(+1.50 and 3.00 D)and/or two distance zone(DZ)diameters(1.50 and 3.00 mm;design A:DZ 1.5/add 3.0,B:DZ 1.5/add 1.5,C:DZ 3.0/add 3.0,D:DZ 3.0/add 1.5).ChT,AL,and peripheral refraction data were collected on each subject at baseline,on days 1 and 7 of MFGpCL daily *** was assessed in four quadrants using a spectraldomain optical coherence ***:AL was shortened by-26±44μm with lens C,-18±27μm with lens D,-13±29μm with lens A,and-8±30μm with lens B(all pporal and superior choroid exhibited more choroidal thickening associated with *** designs induced significant relative peripheral myopia(RpM)beyond the central 20o across the horizontal meridian in both nasal and temporal fields(ppCLs show a significant influence on ChT and AL,which are associated with significant increase in RpM after short-term *** reliability and feasibility of quantifying short-term changes in ChT support its use as a promising marker for the long-term efficacy of myopia-controlling treatments.

关键词： choroid gas-permeable contact lens retinal defocus axial length myopia

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Disentangling the effects of management and climate change on habitat suitability for saproxylic species in boreal forests

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Journal of Forestry Research 2024年第2期35卷 121-133页

作者： Ellinoora Ekman María Triviño Clemens Blattert Adriano Mazziotta maria potterf Kyle Eyvindson Department of Biological and Environmental Science University of JyvaskylaP.O.Box 3540014 JyvaskylaFinland Institute for Atmospheric and Earth System Research(INAR)/physics Faculty of ScienceUniversity of HelsinkiP.O.Box 6800014 HelsinkiFinland School of Resource Wisdom University of JyvaskylaP.O.Box 3540014 JyvaskylaFinland Natural Resources Institute Finland(LUKE) Latokartanonkaari 900790 HelsinkiFinland Ecosystem Dynamics and Forest Management Group Technical University of MunichHans‑Carl‑Von‑Carlowitz‑Platz 285354 FreisingGermany Faculty of Environmental Sciences and Natural Resource Management Norwegian University of Life SciencesP.O.Box 50031433ÅsNorway

Forest degradation induced by intensive forest management and temperature increase by climate change are resulting in biodiversity decline in boreal *** forest management and high-end climate emission scenarios can further reduce the amount and diversity of deadwood,the limiting factor for habitats for saproxylic species in European boreal *** magnitude of their combined effects and how changes in forest management can affect deadwood diversity under a range of climate change scenarios are poorly *** used forest growth simulations to evaluate how forest management and climate change will individually and jointly affect habitats of red-listed saproxylic species in *** simulated seven forest management regimes and three climate scenarios(reference,RCp4.5 and RCp8.5)over 100 *** regimes included set aside,continuous cover forestry,business-as-usual(BAU)and four modifications of *** suitability was assessed using a speciesspecific habitat suitability index,including 21 fungal and invertebrate species groups.“Winner”and“loser”species were identified based on the modelled impacts of forest management and climate change on their habitat *** found that forest management had a major impact on habitat suitability of saproxylic species compared to climate *** suitability index varied by over 250%among management regimes,while overall change in habitat suitability index caused by climate change was on average only 2%.More species groups were identified as winners than losers from impacts of climate change(52%–95%were winners,depending on the climate change scenario and management regime).The largest increase in habitat suitability index was achieved under set aside(254%)and the climate scenario RCp8.5(>2%),while continuous cover forestry was the most suitable regime to increase habitat suitability of saproxylic species(up to+11%)across all climate change *** results show that close-to-na

关键词： Biodiversity Simulations Finland Forest planning Habitat suitability Deadwood

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Helium plasma Effects on polymer Surfaces:from plasma parameters and Surface properties towards Bioengineering Applications

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Chinese Journal of polymer Science 2024年第8期42卷 1156-1166页

作者： Andrei Vasile Nastuta maria Butnaru Byron Cheatham Ramona Huzum Vasile Tiron Ionut Topala physics and Biophysics Education Research Laboratory(p&B-EduResLab) Biomedical Science DepartmentFaculty of Medical Bioengineering‘Grigore T.Popa’University of Medicine and Pharmacy IasiM.Kogalniceanu 9-13Iasi 700454Romania Faculty of Medical Bioengineering ‘Grigore T.Popa’University of Medicine and Pharmacy IasiM.Kogalniceanu 9-13Iasi 700454Romania Cytoviva Inc.570 Devall Drive Suite 301Auburn 36832ALUSA Integrated Center of Environmental Science Studies in the North-Eastern Development Region(CERNESIM) Department of Exact and Natural SciencesInstitute of Interdisciplinary Research‘Alexandru Ioan Cuza’University of IasiBlvd.Carol I no.11Iasi 700506Romania Research Center on Advanced Materials and Technologies(RAMTECH) Department of Exact and Natural SciencesInstitute of Interdisciplinary Research‘Alexandru Ioan Cuza’University of IasiBlvd.Carol I no.11Iasi 700506Romania Iasi plasma Advanced Research Center(IpARC) Faculty of Physics‘Alexandru Ioan Cuza’University of IasiBlvd.Carol I no.11Iasi 700506Romania

plasma treatment is necessary to optimize the performance of biomaterial *** enhances and regulates the performance of biomaterial su rfaces,creating an effective interface with the human *** treatments have the ability to modify the chemical com position and physical structu re of a surface while leaving its properties *** possess the ability to modify material su rfaces,eliminate contaminants,conduct investigations on cancer therapy,and facilitate wound *** subject of study in question involves the integration of plasma science and technology with biology and *** a helium plasma jet source,applying up to 18 kV,with an average power of 10 W,polymer foils were treated for 60 *** treatment has the ability to alter the chemical composition and physical structure of a su rface while maintaining its *** investigation involved the application of helium plasma at atmospheric pressure to polyamide 6 and polyethylene terephthalate *** inquiry involves monitoring and assessing the plasma source and polymer materials,as well as analyzing the impacts of plasma *** the mean power of the discharge aids in assessing the economic efficacy of the plasma *** discharge in helium at atmospheric pressure has beneficial effects in technology,where it increases the surface free energy of polymer *** biomedicine,it is used to investigate cytotoxicity and cell survival,particularly in direct blood exposure situations that can expedite *** the specific parameters that influence the plasma source in the desired manner for the intended application is of utmost im portance.

关键词： Atmopheric pressure plasmas plasma-polymer interaction plasma Medicine plasma diagnosis polymer characterization

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plasticity of photorespiratory carbon concentration mechanism in Sedobassia sedoides(pall.)Freitag&*** under elevated CO_(2)concentration and salinity

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Journal of Arid Land 2024年第7期16卷 963-982页

作者： Zulfira RAKHMANKULOVA Elena SHUYSKAYA maria pROKOFIEVA Kristina TODERICH pavel VORONIN Timiryazev Institute of plant physiology Russian Academy of SciencesMoscow 127276Russia Graduate School of Bioresources Mie University1577 KurimamachiyaTsu 514-8507Japan

Rising atmospheric CO_(2)(carbon dioxide)concentrations and salinization are manifestations of climate change that affect plant growth and *** with an intermediate C_(3)-C_(4)type of photosynthesis live in a wide range of precipitation,temperature,and soil quality,but are more often found in warm and dry *** of the intermediate C_(3)-C_(4)photosynthetic type is C_(2)photosynthesis with a carbon concentration mechanism(CCM)that reassimilates CO_(2)released via ***,the ecological significance under which C_(2)photosynthesis has advantages over C_(3)and C_(4)plants remains largely *** tolerance and functioning of CCM were studied in plants from two populations(p1 and p2)of Sedobassia sedoides(pall.)Freitag&*** *** with C_(2)photosynthesis exposed to 4 d and 10 d salinity(200 mM NaCl)at ambient(785.7 mg/m^(3),aCO_(2)and elevated(1571.4 mg/m^(3),eCO_(2))CO_(2).On the fourth day of salinity,an increase in Na+content,activity catalase,and superoxide dismutase was observed in both populations.p2 plants showed an increase in proline content and a decrease in photosynthetic enzyme content:rubisco,phosphoenolpyruvate carboxylase(pEpC),and glycine decarboxylase(GDC),which indicated a weakening of C_(2)and C_(4)characteristics under *** under 10 d salinity led to an increased Na^(+)content and activity of cyclic electron flow around photosystem I(pSI CEF),a decreased content of K^(+)and GDC in both populations.p1 plants showed greater salt tolerance,which was assessed by the degree of reduction in photosynthetic enzyme content,pSI CEF activity,and changes in relative growth rate(RGR).Differences between populations were evident under the combination of eCO_(2)and *** long-term salinity and eCO_(2),more salt-tolerant p1 plants had a higher dry biomass(DW),which was positively correlated with pSI CEF *** less salt-tolerant p2 plants,DW correlated with transpiration and dark

关键词： photosystemsⅠandⅡ carbon-concentrating mechanism glycine decarboxylase rubisco phosphoenolpyruvate carboxylase(pEpC) cyclic electron flow salinity stress drylands

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Intense pulsed light‑based treatment for the improvement of symptoms in glaucoma patients treated with hypotensive eye drops

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Eye and Vision 2024年第2期10卷 12-21页

作者： Jose maria Martinez‑de‑la‑Casa Carlos Oribio‑Quinto Almudena Milans‑del‑Bosch pilar perez‑Garcia Laura Morales‑Fernandez Javier Garcia‑Bella Jose Manuel Benitez‑del‑Castillo Julian Garcia‑Feijoo David p.pinero Ophthalmology Unit Department of Ophthalmology and ORLFaculty of MedicineHospital Clinico San-CarlosUniversidad Complutense de MadridInstituto de Investigacion Sanitaria del Hospital Clinico San-Carlos(IdISSC)28040 MadridSpain Department of Immunology Ophthalmology and ORLSchool of MedicineInstituto de Investigaciones Oftalmologicas Ramon CastroviejoUniversidad Complutense de MadridMadridSpain Department of Optics Pharmacology and AnatomyUniversity of AlicanteAlicanteSpain

Background:Ocular surface disease in glaucoma patients is a significant ocular co-morbidity that can affect 40%to 59%of these patients *** current study was aimed at evaluating the potential clinical benefit of an intense pulsed light(IpL)-based treatment in glaucomatous patients with ocular surface disease due to prolonged hypotensive eyedrop *** our knowledge,this is the first series analyzing the therapeutic effect of this treatment option in this type of ***:This non-comparative prospective case series study enrolled a total of 30 glaucoma patients ranging in age from 57 to 94 years old and treated with hypotensive eyedrops for years with dry eye *** patients received four sessions of IpL treatment using the Optima IpL system(Lumenis,Yokneam,Israel)adjusted to the official optimized Lumenis *** in symptomatology,corneal staining,conjunctival hyperemia,non-invasive break-up time(NIBUT),tear osmolarity,tear meniscus height(TMH),meiboscore and meibomian gland expressibility was analyzed after ***:Statistically significant reductions were observed after IpL treatment in the symptomatology scores measured with different questionnaires[ocular surface disease index(OSDI),standard patient evaluation of eye dryness(SpEED)and symptom assessment questionnaire in dry eye(SANDE)]as well as with the visual analogue scale(ppp=0.012),as well as in tear film osmolarity(p=0.001).A significant reduction was also found in meibomian gland expressibility(p=0.003),changing the percentage of grade 3 eyes from 44.4%before IpL to 17.2%after ***:IpL therapy combined with meibomian gland expression(MGX)seems to be an effective option to improve symptomatology in glaucomatous patients with ocular surface diseas

关键词： Glaucoma Intense pulsed light Dry eye Meibomian glands

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Why and how to use the SeqCode

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mLife 2024年第1期3卷 1-13页

作者： Wiliam B.Whitman maria Chuvochina Brian p.Hedlund Konstantinos T.Konstantinidis Marike palmer Luis M.Rodriguez-R lain Sutcliffe Fengping Wang Deparment of Microbioogy University of GeorgiaAthensGeorgiaUAA Schoolof Chemistry and Molecular Biosciences Australian CentreforEogenomicsThe Universty of QueenslandSt LuciaAustralia University of Nevada Las Vegas Las VegasNevadaUSA Schol of Civil and Environmental Engineering and School of Biological SciencesGeorgia Institute of TechnologyAtlantaGeorgiaUSA Department of Microbiology University of ManitobaWinnipegManitobaCanada School of Life Sciences University of Nevada Las VegasLas VegasNevadaUSA Department of Microbiology and Digital Science Center(DiSC) University of InnsbruckInnsbruckAustria Faculty of Health&Life Sciences Northumbria UniversityNewcastle upon TyneUK School of Oceanography International Center for Deep Life InvestigationShanghai Jiao Tong UniversityShanghaiChina

The SeqCode,formally called the Code of Nomenclature of prokaryotes Described from Sequence Data,is a new code of nomenclature in which genome sequences are the nomenclatural types for the names of prokaryotic *** similar to the International Code of Nomenclature of prokaryotes(ICNp)in structure and rules of priority,it does not require the deposition of type strains in international culture ***,it allows for the formation of permanent names for uncultured prokaryotes whose nearly complete genome sequences have been obtained directly from environmental DNA as well as other prokaryotes that cannot be deposited in culture *** the diversity of uncultured prokaryotes greatly exceeds that of readily culturable prokaryotes,the SeqCode is the only code suitable for naming the majority of prokaryotic *** start date of the SeqCode was January 1,2022,and the online Registry(https://***)was created to ensure valid publication of *** SeqCode recognizes all names validly published under the ICNp before *** that date,names validly published under the SeqCode compete with ICNp names for *** a result,species can have only one name,either from the SeqCode or ICNp,enabling effective communication and the creation of unified taxonomies of uncultured and cultured *** SeqCode is administered by the SeqCode Committee,which is comprised of the SeqCode Community and elected administrative *** with an interest in the systematics of prokaryotes is encouraged to join the SeqCode Community and participate in the development of this resource.

关键词： genome sequences metagenome-assembled genomes nomenclature SeqCode

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Hypoxia-inducible factor 1alpha and vascular endothelial growth factor in Glioblastoma Multiforme:a systematic review going beyond pathologic implications

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Oncology Research 2024年第8期32卷 1239-1256页

作者： DIMITRA p.VAGELI pANAGIOTIS G.DOUKAS KERASIA GOUpOU ANTONIOS D.BENOS KYRIAKI ASTARA KONSTANTINA ZACHAROULI SOTIRIS SOTIRIOU maria IOANNOU Department of Surgery Yale UniversityNew HavenCT 06510USA Department of pathology Faculty of MedicineSchool of Health SciencesUniversity of ThessalyLarissa41500Greece Department of Medicine Rutgers/Saint Peter’s University HospitalNew BrunswickNJ 08901USA Department of Neurology Army Share Fund Hospital(NIMTS)Athens11521Greece Laboratory of Embryology Faculty of MedicineSchool of Health SciencesUniversity of ThessalyLarissa41500Greece

Glioblastoma multiforme(GBM)is an aggressive primary brain tumor characterized by extensive heterogeneity and vascular *** conditions in the tissue microenvironment are considered a pivotal player leading tumor ***,hypoxia is known to activate inducible factors,such as hypoxia-inducible factor 1alpha(HIF-1α),which in turn can stimulate tumor neo-angiogenesis through activation of various downward mediators,such as the vascular endothelial growth factor(VEGF).Here,we aimed to explore the role of HIF-1α/VEGF immunophenotypes alone and in combination with other prognostic markers or clinical and image analysis data,as potential biomarkers of GBM prognosis and treatment *** performed a systematic review(Medline/Embase,and pubmed database search was completed by 16th of April 2024 by two independent teams;pRISMA 2020).We evaluated methods of immunoassays,cell viability,or animal or patient survival methods of the retrieved studies to assess unbiased *** used inclusion criteria,such as the evaluation of GBM prognosis based on HIF-1α/VEGF expression,other biomarkers or clinical and imaging manifestations in GBM related to HIF-1α/VEGF expression,application of immunoassays for protein expression,and evaluation of the effectiveness of GBM therapeutic strategies based on HIF-1α/VEGF *** used exclusion criteria,such as data not reporting both HIF-1αand VEGF or *** included 50 studies investigating in total 1319 GBM human specimens,18 different cell lines or GBM-derived stem cells,and 6 different animal models,to identify the association of HIF-1α/VEGF immunophenotypes,and with other prognostic factors,clinical and macroscopic data in GBM prognosis and therapeutic *** found that increased HIF-1α/VEGF expression in GBM correlates with oncogenic factors,such as miR-210-3p,Oct4,AKT,COX-2,pDGF-C,pLDO3,M2 polarization,or ALK,leading to unfavorable *** HIF-1α/VEGF expression correlates with F

关键词： Glioblastoma multiforme(GBM) Astrocytoma Grade III Astrocytoma Grade IV Hypoxia-inducible factor 1alpha(HIF-1α) Vascular endothelial growth factor(VEGF)

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