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China as a Responsible Power Amid the COVID-19 Crisis:Perceptions of Partners and Adversaries on Twitter

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Fudan Journal of the Humanities and Social Sciences 2022年第2期15卷 159-188页

作者： maria Papageorgiou Daniella da silva Nogueira de Melo Department of Political Science and International Relations University of MinhoBragaPortugal

The challenging COVID-19 context has questioned China’s role as a responsible power but also tested its relationship with other *** study seeks to investigate‘How other actors have perceived China’s role as a responsible power amid the COVID-19 crisis’.To do so,we opt for a qualitative approach examining the official Twitter accounts of seven actors that hold different types of relationships with China,namely Brazil,EU,Japan,Iran,Pakistan,Russia,and the *** aim to identify the perceptions of these actors towards China as unfolding from January to June 2020,emphasising the empirical applicability of Twitter’s *** adopting the concept of responsible power approached from a Role Theory perspective,this paper contributes to a more nuanced understanding of interstate relations and role *** findings indicate that there have been variations in the responses and perceptions other states have expressed towards China while its framing as a responsible power differs significantly during the crisis and its landmark events.

关键词： China COVID-19 Twitter Role theory Responsible power

Relationship between head and neck cancer therapy and some genetic endpoints

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World Journal of Clinical Oncology 2014年第2期5卷 93-102页

作者： Eliana maria Minicucci Glenda Nicioli da silva Daisy maria Fávero Salvadori Departamento de Dermatologia e Radioterapia Faculdade de Medicina de BotucatuUniv. Estadual Paulista UNESPBotucatu SP 18618-000 Brazil Departamento de Análises Clínicas Escola de Farmácia Univ. Federal de Ouro Preto UFOPOuro Preto 35400-000 Brazil Departamento de Patologia Faculdade de Medicina de Botucatu Univ. Estadual Paulista UNESPBotucatu SP 18618-000 Brazil

Head and neck cancer(HNC) is the sixth most common human malignancy worldwide. The main forms of treat ment for HNC are surgery, radiotherapy(RT) and che motherapy(CT). However, the choice of therapy de pends on the tumor staging and approaches, which are aimed at organ preservation. Because of systemic RT and CT genotoxicity, one of the important side effects is a secondary cancer that can result from the activity of radiation and antineoplastic drugs on healthy cells Ionizing radiation can affect the DNA, causing single and double-strand breaks, DNA-protein crosslinks and oxidative damage. The severity of radiotoxicity can be directly associated with the radiation dosimetry and the dose-volume differences. Regarding CT, cisplatin is stil the standard protocol for the treatment of squamous cell carcinoma, the most common cancer located in theoral cavity. However, simultaneous treatment with cisplatin, bleomycin and 5-fluorouracil or treatment with paclitaxel and cisplatin are also used. These drugs can interact with the DNA, causing DNA crosslinks, double and single-strand breaks and changes in gene expression. Currently, the late effects of therapy have become a recurring problem, mainly due to the increased survival of HNC patients. Herein, we present an update of the systemic activity of RT and CT for HNC, with a focus on their toxicogenetic and toxicogenomic effects.

关键词： Chemotherapy Head and neck cancer Radiotherapy Toxicogenetic Toxicogenomic

Investigating local corrosion processes of magnesium alloys with scanning probe electrochemical techniques: A review

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Journal of Magnesium and Alloys 2022年第11期10卷 2997-3030页

作者： Mara Cristina Lopes de Oliveira Rejane maria Pereira da silva Ricardo M.Souto Renato Altobelli Antunes Federal University of ABC Center for EngineeringModeling and Applied Social SciencesAv.Dos Estados500109210-580Santo AndréSP Brazil Instituto de Pesquisas Energéticas e Nucleares IPEN/CNENAv.Prof.Lineu Prestes2242São PauloBrazil Institute of Material Science and Nanotechnology University of La LagunaP.O.Box 456La LagunaTenerife 38200Spain

The study of corrosion of magnesium and its alloys has emerged a hot topic in the applications of lightweight structural materials. The inherently high electrochemical activity of bare magnesium surfaces still lacks a convincing mechanism to describe the observed experimental characteristics, and it has prompted the development of various types of protective coatings with the aim of slowing metal dissolution. In recent years, new instruments and techniques have been developed to study with spatial resolution the local corrosion processes that occur in metallic materials in general, and for magnesium and its alloys in particular, both for bare surfaces and coated. Scanning microelectrochemical techniques, such as local electrochemical impedance spectroscopy(LEIS), scanning electrochemical microscopy(SECM), scanning vibrating electrode technique(SVET), scanning ion-selective electrode technique(SIET) and scanning Kelvin probe(SKP) can provide information about the local electrochemical activity of metallic surfaces. In the present work, the applications of these techniques in corrosion studies of magnesium and its alloys are reviewed. Assessment of corrosion mechanisms, barrier properties of conventional coatings and active corrosion behavior of self-healing coatings are examined. Limitations and future developments in this area are discussed.

关键词： Magnesium alloys LEIS SECM SVET SIET SKP

Episcleral brachytherapy as an effective alternative in vasoproliferative tumors

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International Journal of Ophthalmology(English edition) 2018年第12期11卷 2017-2020页

作者： marta Para Prieto maria Antonia Saornil Jesus maria de Frutos Baraja Ciro Garcia Alvarez Patrieia Diezhandino Garcia Francisco Lopez Lara Intraocular Tumors Unit Ophthalmology &Radiotherapy departmentsHospital Clinico UniversitarioValladolid 47005 Spain

The aim of this study is to assess the results of episcleral brachytherapy as treatment of retinal vasoproliferative tumors(RVTs) in a referral Intraocular Tumors Unit(ITU). A retrospective review of all patients diagnosed with vasoproliferative tumors of the retina and treated with episcleral brachytherapy in the ITU, University Hospital of Valladolid between 2009 and 2015 was done. Five patients accomplished the inclusion criteria. All of them presented associated exudation and secondary retinal detachments(RD). Four patients had received prior treatments. Decreased tumor size and exudation regression was found in all cases after treatment. Visual acuity remained stable or increased in all patients. No recurrences have been found after twelve-months follow up. The results of the present study suggest that episcleral brachytherapy is an efficient and safe option in the management of vasoproliferative tumors, especially when large tumor or extensive subretinal fluid is present. In these cases episcleral brachytherapy could be considered as a first line treatment.

关键词： episcleral brachytherapy retinal vasoproliferative tumors

Performance index: An expeditious tool to screen for improved drought resistance in the Lathyrus genus

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Journal of Integrative Plant Biology 2014年第7期56卷 610-621页

作者： Susana Silvestre Susana de Sousa Araújo maria Carlota Vaz Patto Jorge Marques da silva Center for Biodiversity Functional and Integrative Genomics(BioFIG)and Department of Plant BiologyFaculty of ScienceUniversity of LisbonCampo Grande Animal and Veterinary Sciences Research Center Tropical Research Institute(IICT‐CVZ)Faculty of Veterinary Medicine Plant Cell Biotechnology Lab Institute for Chemistry and Biological Technology António Xavier-New University of Lisbon(ITQB‐UNL)

Some species of the Lathyrus genus are among the most promising crops for marginal lands, with high resilience to drought, flood, and fungal diseases, combined with high yields and seed nutritional value. However, lack of knowledge on the mechanisms underlying its outstanding performance and methodologies to identify elite genotypes has hampered its proper use in breeding. Chlorophyl a fast fluorescence transient （JIP test）, was used to evaluate water deficit （WD） resistance in Lathyrus genus. Our results reveal unaltered photochemical values for al studied genotypes showing resistance to mild WD. Under severe WD, two Lathyrus sativus genotypes showed remarkable resilience maintaining the photochemical efficiency, contrary to other genotypes studied. Performance index （PIABS） is the best parameter to screen genotypes with improved performance and grain production under WD. Moreover, we found that JIP indices are good indicators of genotypic grain production under WD. Quantum yield of electron transport （wEo） and efficiency with which＆trapped excitons can move electrons further than QA （c0） revealed as important traits related to improved photosyn-thetic performance and should be exploited in future Lathyrus germplasm improvements. The JIP test herein described showed to be an expeditious tool to screen and to identify elite genotypes with improved drought resistance.

关键词： Grain production JIP test Lathyrus germplasm photochemical performance water deficit

Unlocking the in vitro anti-Trypanosoma cruzi activity of halophyte plants from the southern Portugal

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Asian Pacific Journal of Tropical Medicine 2016年第8期9卷 714-719页

作者： marta Oliveira Policarpo Ademar Sales Junior maria Joao Rodrigues Marina DellaGreca Luisa Barreira silvane maria Fonseca Murta Alvaro Jose Romanha Luisa Custodio Center of Marine Sciences (CCMAR) University of AlgarveCampus de Gambelas 8005-139 FaroPortugal Centro de Pesquisas Rene Rachou FIOCRUZ Belo HorizonteMinas GeraisBrazil Dipartimento di Chimica Organica e Biochimica Universita` Federico Ⅱ Complesso Universitario Monte Sant'AngeloVia Cintia 4I-80126NapoliItaly

Objective:To evaluate the in vitro anti-Trypanosoma cruzi（***） activity of organic extracts prepared from halophyte species collected in the southern coast of Portugal（Algarve）,and chemically characterize the most active ***:Acetone,dichloromethane and methanol extracts were prepared from 31 halophyte species and tested in vitro against trypomastigotes and intracellular amastigotes of the Tulahuen strain of *** most active extract was fractionated by preparative HPLC-DAD,affording 11 *** most selective fraction was fully characterized by ***:From 94 samples tested,one was active,namely the root dichloromethane extract of Juncus acutus(IC50 < 20 μg/mL).This extract was fractionated by HPLC,affording 11 fractions,one of them containing only a pure compound（juncunol）,and tested for anti-parasitic *** 8(IC50 = 4.1 μg/mL) was the most active,and was further characterized by *** major compounds were phenanthrenes,9,10-dihydrophenanthrenes and ***:Our results suggest that the compounds identified in fraction 8 are likely responsible for the observed anti parasitic *** research is in progress aiming to isolate and identify the specific active *** the best of our knowledge,this is the first report on the in vitro anti *** activity of halophyte species.

关键词： Chagas disease Halophytes Trypanosoma cruzi Phenanthrenes Juncunol

Retinal remodeling following photoreceptor degeneration causes retinal ganglion cell death

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Neural Regeneration Research 2018年第11期13卷 1885-1886页

作者： Diego Garcia-Ayuso Johnny Di Pierdomenico marta Agudo-Barriuso Manuel Vidal-Sanz maria P. ViUegas-Perez Departamento de Oftalmologla Facultad de Medicina Universidad de Murcia and Instituto Murciano de Investigacion Biosanitaria Hospital Virgen de la Arrixaca (IMIB-Virgen de la Arrixaca) Murcia Spain

The retina is the extension of the central nervous system that senses *** and rods,situated in the outer retina,convert light into electrical signals that travel through intermediate neurons where these are further pr... 详细信息

关键词： FG Retinal remodeling following photoreceptor degeneration causes retinal ganglion cell death Figure

DNA features beyond the transcription factor binding site specify target recognition by plant MYC2-related bHLH proteins

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Plant Communications 2021年第6期2卷 27-43页

作者： Irene Lopez-Vidriero marta Godoy Joaquin Grau maria Penuelas Roberto Solano Jose M.Franco-Zorrilla Genomics Unit Centro Nacional de BiotecnologiaCSICC/Darwin 328049 MadridSpain Department of Plant Molecular Genetics Centro Nacional de BiotecnologiaCSICC/Darwin 328049 MadridSpain

Transcription factors(TFs)regulate gene expression by binding to cis-regulatory sequences in the promoters of target *** research is helping to decipher in part the cis-regulatory code in eukaryotes,including plants,but it is not yet fully understood how paralogous TFs select their *** we addressed this question by studying several proteins of the basic helix-loop-helix(bHLH)family of plant TFs,all of which recognize the same DNA *** focused on the MYC-related group of bHLHs,that redundantly regulate the jasmonate(JA)signaling pathway,and we observed a high correspondence between DNA-binding profiles in vitro and MYC function in *** demonstrated that A/T-rich modules flanking the MYC-binding motif,conserved from bryophytes to higher plants,are essential for TF recogni*** observed particular DNA-shape features associated with A/T modules,indicating that the DNA shape may contribute to MYC DNA *** extended this analysis to 20 additional bHLHs and observed correspondence between in vitro binding and protein function,but it could not be attributed to A/T modules as in *** conclude that different bHLHs may have their own codes for DNA binding and specific selection of targets that,at least in the case of MYCs,depend on the TF-DNA interplay.

关键词： transcription factor bHLH target specificity plants

Interleukin-6-174G/C polymorphism is associated with a decreased risk of type 2 diabetes in patients with chronic hepatitis C virus

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World Journal of Hepatology 2020年第4期12卷 137-148页

作者： Cliviany Borges da silva Diego Alves Vieira Luisa Freitas de Melo Anna Luiza Soares Chagas Adriana Dias Gomes César Lúcio Lopes de Faria Jr Rosangela Teixeira Dulciene maria de Magalh?es Queiroz Gifone Aguiar Rocha maria marta Sarquis Soares Juliana maria Trindade Bezerra Luciana Diniz silva Sciences Applied to Adult Health Care Post-Graduate Programme Faculdade de MedicinaUniversidade Federal de Minas GeraisBelo Horizonte 30130100Minas GeraisBrazil Outpatient Clinic of Viral Hepatitis Instituto Alfa de GastroenterologiaFaculdade de MedicinaUniversidade Federal de Minas GeraisBelo Horizonte 30130100Minas GeraisBrazil Medical undergraduate student Faculdade de MedicinaUniversidade Federal de Minas GeraisBelo Horizonte 30130100Minas GeraisBrazil Laboratory of Research in Bacteriology Faculdade de MedicinaUniversidade Federal de Minas GeraisBelo Horizonte 30130100Minas GeraisBrazil Department of Internal Medicine Faculdade de MedicinaUniversidade Federal de Minas GeraisBelo Horizonte 30130100Minas GeraisBrazil Division of Endocrinology Department of Internal MedicineFaculdade de MedicinaUniversidade Federal de Minas GeraisBelo Horizonte 30130100Minas GeraisBrazil Epidemiology of Infectious and Parasitic Diseases Laboratory Department of ParasitologyInstitute of Biological SciencesUniversidade Federal de Minas GeraisBelo Horizonte 30130100Minas GeraisBrazil

BACKGROUND Chronic hepatitis C(CHC)is associated with type 2 diabetes *** the pathogenesis remains to be elucidated,a growing evidence has suggested a role of pro-inflammatory immune *** serum concentrations of Interleukin 6(IL-6)have been associated with insulin resistance,type 2 diabetes mellitus as well as advanced forms of liver disease in chronic hepatitis C *** To investigate the frequency of IL-6-174G/C(rs1800795)single nucleotide polymorphism(SNP)in CHC patients and in healthy subjects of the same *** between type 2 diabetes mellitus(dependent variable)and demographic,clinical,nutritional,virological and,IL-6 genotyping data were also investigated in CHC *** Two hundred and forty-five patients with CHC and 179 healthy control subjects(blood donors)were prospectively *** 2 diabetes mellitus was diagnosed according to the criteria of the American Diabetes ***,biochemical,histological and radiological methods were used for the diagnosis of the liver ***-6 polymorphism was evaluated by Taqman SNP genotyping *** data were analysed by logistic regression *** Type 2 diabetes mellitus,blood hypertension and liver cirrhosis were observed in 20.8%(51/245),40.0%(98/245)and 38.4%(94/245)of the patients,*** frequency of the studied IL-6 SNP did not differ between the CHC patients and controls(P=0.81)and all alleles were in Hardy-Weinberg equilibrium(P=0.38).In the multivariate analysis,type 2 diabetes mellitus was inversely associated with GC and CC genotypes of IL-6-174(OR=0.42;95%CI=0.22-0.78;P=0.006)and positively associated with blood hypertension(OR=5.56;95%CI=2.79-11.09;P<0.001).CONCLUSION This study was the first to show that GC and CC genotypes of IL-6-174 SNP are associated with a decreased risk of type 2 diabetes mellitus in patients chronically infected with hepatitis C *** identification of potential inflammatory mediato

关键词： Chronic Hepatitis C Type 2 diabetes mellitus Interleukin 6-174G/Cgenepromoter single nucleotide polymorphism Blood hypertension Healthy control subjects