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Paleoproterozoic juvenile magmatism within the northeastern sector of the Sao francisco paleocontinent:Insights from the shoshonitic high Ba-Sr Montezuma granitoids

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Geoscience Frontiers 2020年第5期11卷 1821-1840页

作者： Samuel Moreira Bersan Alice Fernanda de Oliveira Costa Andre Danderfer francisco roberio de abreu Cristiano Lana Glaucia Queiroga Craig Storey Hugo Moreira Universidade Federal de Ouro Preto Programa de Pos-graduacaoDepartamento de GeologiaCampus Morro do CruzeiroOuro PretoMGCEP 35400-000Brazil Universidade Federal de Ouro Preto Departamento de GeologiaCampus Morro do CruzeiroOuro PretoMGCEP 35400-000Brazil Sustain Geologia Ltda Teresa M.Valadares 503/502Belo HorizonteMGCEP 30575-160Brazil University of Portsmouth School of Earth and Environmental SciencesBurnaby BuildingBurnaby RoadPortsmouthPO13QLUK

New,integrated petrographic,mineral chemistry,whole rock geochemical,zircon and titanite UPb geochronology,and zircon Hf isotopic data from the Montezuma granitoids,as well as new geochemical results for its host rocks represented by the Corrego Tingui Complex,provides new insights into the late-to post-collisional evolution of the northeastern Sao francisco paleocontinent.U-Pb zircon dates from the Montezuma granitoids spread along the Concordia between ca.2.2 Ga to 1.8 Ga and comprise distinct *** I have crystallization ages between ca.2.15 Ga and 2.05 Ga and are interpreted as inherited *** II zircon dates vary from 2.04 Ga to1.9 Ga and corresponds to the crystallization of the Montezuma granitoids,which were constrained at ca.2.03 Ga by the titanite U-Pb *** age zoning is common within the ca.1.8 Ga Group III zircon ages,being related to fluid isotopic re-setting during the Espinhaco rifiting ***εHf(t)analysis show dominantly positive values for both Group I(-4 to+9)andⅡ(-3 to+8)zircons and TDM2 model ages of 2.7-2.1 Ga and 2.5-1.95 Ga,***,the Montezuma granitoids are weakly peraluminous to metaluminous magnesian granitoids,enriched in LILES and LREE,with high to moderate Mg#and depleted in some of the *** lithochemical signature,added to the juvenile signature of both inherited and crystallized zircons,allowed its classification as a shoshonitic high Ba-Sr granitoid related to a late-to post-collisional lithosphere delamination followed by asthenospheric *** this scenario,the partial melting of the lithospheric mantle interacted with the roots of an accreted juvenile intra-oceanic arc,being these hybrid magma interpreted as the source of the Montezuma *** Corrego Tingui Complex host rocks are akin to a syn-to late-collisional volcanic arc granitoids originated from the partial melting of ancient crustal *** results presented in this study have revealed the occurrence of j

关键词： Zircon U–Pb-Hf Titanite U–Pb High Ba–Sr Late-to post-collisional Sao francisco paleocontinent

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A perspective on potassic and ultrapotassic rocks:Constraints on the Paleoproterozoic late to post-collisional event in the São francisco paleocontinent

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Geoscience Frontiers 2022年第5期13卷 242-266页

作者： Samuel Moreira Bersan AndréDanderfer Craig Storey Henrique Bruno Hugo Moreira francisco abreu Cristiano Lana Leonardo Gonçalves Isabela Nahas Universidade Federal de Ouro Preto Departamento de GeologiaCampus Morro do CruzeiroOuro PretoMG CEP 35400-000Brazil University of Portsmouth School of the EnvironmentGeography and GeosciencesBurnaby BuildingBurnaby RoadPortsmouth PO13QLUK Tektos Research Group UERJ-Rio de Janeiro State UniversityBrazil Sustain Geologia Belo HorizonteBrazil

The late-to post-collisional stage in orogenic systems is characterized by the coeval existence of bimodal potassic to ultrapotassic magmatic activity related to partial melting of an enriched lithospheric mantle together with crustal derived *** this paper,we present new whole rock geochemical analyses combined with zircon and titanite U–Pb and zircon Hf isotopic data from potassic to ultrapotassic rocks from six plutons that occur within the Archean Itacambira-Monte Azul block(BIMA),to discuss their petrogenesis and the tectonic implications for the São francisco *** new U–Pb ages range from ca.2.06 Ga to 1.98 Ga and reveal long-lasting potassic magmatism within the BIMA,which is within the late-to-post-collisional stage of the São francisco paleocontinent *** ultrapotassic rocks are compatible with a fluid-related metasomatized mantle source enriched by previous subduction events,whereas the potassic rocks are bimodal and have a transitional shoshonitic to A-type *** rocks have a hybrid nature,possible related to the mixing between the mafic potassic/ultrapotassic rocks and high temperature crustal melts of the Archean continental *** results also show an increase of within-plate signature towards the younger potassic *** participation of an important Archean crustal component in the genesis of these rocks is highlighted by the common and occasionally abundant occurrence of Archean inherited *** Hf isotopic record shows that most of the zircon inheritance has dominantly subchondriticεHf(t)values,which fits a crustal reworking derivation from a similar Eo-to Paleoarchean precursor ***,the presence of juvenile 2.36 Ga zircon inheritance in an ultrapotassic sample reveal the existence of a hidden reservoir that is somewhat similar to the described for the Mineiro Belt in southern São francisco paleocontinent.

关键词： Late-to post-collisional Potassic-ultrapotassic rocks U–Pb dating São francisco paleocontinent Rhyacian-Orosirian orogenic system

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Bi-objective mathematical model for choosing sugarcane varieties with harvest residual biomass in energy cogeneration

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International Journal of Agricultural and Biological Engineering 2012年第3期5卷 50-58页

作者： francisco Regis abreu Gomes Coordination of Natural Resources Federal Institute of EducationScience and Technology of CearáRoad o f CedroQuixadáCEBrazil

Sugarcane crop occupies an area of about 23.78 million hectares in 103 countries,and an estimated production of 1.66 billion tons,adding to this volume more than 6%to 17%concerning residual biomass resulting from *** destination of this residual biomass is a major challenge to managers of *** are at least two alternatives which are reduction in residue production and increased output in electricity *** two conflicting objectives are mathematically modeled as a bi-objective *** study developed a bi-objective mathematical model for choosing sugarcane varieties that result in maximum revenue from electricity sales and minimum gathering cost of sugarcane harvesting residual *** approach used to solve the proposed model was based on theε-constraints *** were performed using real data from sugarcane varieties and costs and showed effectiveness of model and method *** experiments showed the possibility of increasing net revenue from electricity sale,i.e.,already discounted the cost increase with residual biomass gathering,in up to 98.44%.

关键词： sugarcane harvested residual biomass bi-objective mathematical programming ε-constraints method energy cogeneration

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Rhyacian-Orosirian tectonic history of the Juiz de Fora Complex:Evidence for an Archean crustal reservoir within an island-arc system

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Geoscience Frontiers 2022年第5期13卷 350-369页

作者： Rasec Almeida Vitalino Elizeu Henrique Bruno Samuel Moreira Bersan Lucas Eduardo de abreu Barbosa Araujo Ivo Dussin Claudio de Morisson Valeriano Carla Neto Monica Heilbron Universidade do Estado do Rio de Janeiro Faculdade de GeologiaTektos–Grupo de Pesquisa em GeotectônicaRua São Francisco Xavier 524MaracanãRio de JaneiroBrazil Laboratório de Geocronologia e Isótopos Radiogênicos Universidade do Estado do Rio de JaneiroRua São Francisco Xavier 524MaracanãRio de JaneiroBrazil

The southern São francisco Paleocontinent(SFP)comprises Archean nuclei and Paleoproterozoic complexes encompassing magmatic arcs juxtaposed during a Rhyacian to Orosirian orogenic *** Juiz de Fora Complex(JFC)represents an imbricated thrust system that comprises orthogranulites with a wide compositional range formed in an intra-oceanic setting during the Siderian to the Orosirian and later accreted to the southeastern margin of the *** we report new petrological,geochemical,whole-rock Nd and Sr data,as well as zircon U–Pb ages from felsic and mafic orthogranulites from the *** new data is combined with a regional compilation that enables an evaluation of the interaction between magmatism and orogenetic episodes in the context of the consolidation of São francisco Paleocontinent during the Rhyacian–*** collisional Island Arc tholeiites(IAT),Tonalites-Tron dhjemites-Granodiorites(TTGs)and sanukitoid magmatism occurred from 2200 Ma to 2085 *** was followed by post-collisional magmatism,which is represented by hybrid granitoids coeval with the emplacement of E-MORB basic *** signatures for the Rhyacian to Orosirian evolution are highlighted by the dominance of negativeεNd(t)associated with Meso-to Neoarchean Nd TDMmodel ages as well as inherited zircon grains from the hybrid *** JFC is extensively highlighted in the literature as a primitive intra-oceanic arc,but here we propose the reworking or recycling of ancient crustal segments within the mature arc stage of the JFC,suggesting a Mesoarchean crustal source involved in the JFC evolution.

关键词： Juiz de Fora complex Paleoproterozoic magmatic arc TTG and sanukitoid São francisco Paleocontinent

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Characterization of Chemical Constituents of Luffa operculata(Cucurbitaceae)

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American Journal of Analytical Chemistry 2011年第8期2卷 989-995页

作者： Cleia Rocha de Sousa Feitosa roberio Costa da Silva Raimundo Braz-Filho Jane Eire Silva Alencar de Menezes Sonia Maria Costa Siqueira francisco Jose Queiroz Monte Programa de Pos-Graduacao em Quimica-DQOI-CC Universidade Federal do CearaFortalezaBrazil Universidade Estadual do Norte Fluminense Darcy Ribeiro Campos dos GoytacazesBrazil Universidade Estadual do Ceara Faculdades de Educacao de CrateusFortalezaBrazil Universidade Estadual do Ceara Itapipoca FortalezaBrazil Universidade Estadual do Ceara e campos do ItaperiFortalezaBrazil

A mixture of new ceramides (1, 2, 3, 4 and 5) together with a binary mixture of ceramides with long chain alkyl (6 and 7), triterpenoid (10) and steroids (11 and 12) have been isolated from bark of the fruits and of the stems of Luffa operculata (Cucurbitaceae). The structures were elucidated by comprehensive spectro- scopic analysis including 1H and 13C NMR, dePT (distortionless enhancement by polarization transfer), COSY (correlated spectroscopy), HMQC (heteronuclear multiple quantum coherence), HMBC (heteronu- clear multiple bond connectivity), IR (infrared), HR-ESI-MS (electrospray ionization-high resolution mass spectra) and LR-MS (low resolution electron ionization mass spectra) experiments. All the ceramides are reported for the first time in Cucurbitaceae and this is the first report of the rare triterpene 10 isolated from Luffa operculata. The ceramides 6 and 7 showed a high acetylcholine esterase inhibitory effect.

关键词： Cucurbitaceae Ceramides Triterpenes Spectroscopic Data

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Hydralazine Hydrochloride:An Alternative Complexometric Reagent for Total Iron Spotometric determination

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American Journal of Analytical Chemistry 2011年第7期2卷 776-782页

作者： Arlan de Assis Gonsalves Cleonia Roberta Melo Araujo Cristiane Xavier Galhardo Marilia Oliveira Fonseca Goulart Fabiane Caxico de abreu Colegiado de Ciencias Farmaceuticas Universidade Federal do Vale do Sao FranciscoPetrolinaBrazil Colegiado de Engenharia Agronomica Universidade Federal do Vale do Sao FranciscoPetrolinaBrazil Instituto de Quimica e Biotecnologia Universidade Federal de AlagoasMaceioBrazil

An alternative spectrophotometric method has been developed for total iron determination using flow injection analysis (FIA). The procedure is based on the coordination reaction between hydralazine and Fe2+ ions, which results in the formation of a purple complex monitored at 538 nm. For determination of total iron, Fe3+ ions were reduced using ascorbic acid. Under optimized conditions, a linear calibration graph (0.1 - 6.0 ?g?ml–1;n = 6) was obtained. The method allows LOD (3? of blank/slope = 0.06 ?g?ml–1) and LOQ (10? of blank/slope = 0.22 ?g?ml–1). The RSD ((s/ ) × 100) for a mixed standard containing 0.60 ?g?ml–1 Fe2+ and Fe3+ was 0.10% (n = 10). Recoveries of spiked samples were 94.3% - 106.0%. The analytical frequency was 60 h–1. The effect of possible interferences has been studied. The procedure was successfully applied for analysis of environmental samples. The real samples results were comparable with those obtained by the official method considering a paired t-test and 95% of confidence level.

关键词： Hydralazine Total Iron determination Spectrophotometry Flow Injection Analysis

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Sexual Diversity and Homophobia in Health Care Services: Perceptions of Homosexual and Bisexual Population in the Cross-Cultural Theory

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Open Journal of Nursing 2016年第6期6卷 470-482页

作者： Grayce Alencar Albuquerque Glauberto da Silva Quirino francisco Winter dos Santos Figueiredo Laércio da Silva Paiva Luiz Carlos de abreu Vitor Engrácia Valenti Vânia Barbosa do Nascimento Erika da Silva Maciel Fernando Rodrigues Peixoto Quaresma Fernando Adami Regional University of Cariri Ceará Brazil School of Medicine of ABC S&atildeo Paulo Brazil Paulista State University Campus of Marilia S&atildeo Paulo Brazil University Center Lutheran of Palmas CEULP-ULBRA Tocantins Brazil

The provision of care by health professionals seems to be related to cultural patterns in which these workers are inserted. The relationship between culture and care becomes a challenge for the provision of health care to homosexual and bisexual population. Thus, this study aimed to identify the perception of Gays, Lesbians, Bisexuals and Transgenders in relation to the care received from health professionals, in the light of Cross-Cultural Theory. This is a qualitative, ethnographic study, conducted with 30 members of sexual minorities in Juazeiro do Norte, Brazil. The data analysis lead to the elaboration of five categories based on of the Theory of Cultural Care Diversity and Universality. The participants emphasized the constant violation of their rights to universal and equitable access to the National Health System, stating that they have suffered from prejudice and exclusion, as result of a heteronormative culture. They highlighted that homophobia and dehumanization of care have a strong relation to sexual orientation. The transvestites are the most prone to humiliation and pejorative attitudes of professionals and such condition is a barrier to accessing services.

关键词： Health Care Health Disparities Discrimination Homophobia Theory

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Siting Study of Solar Thermoelectric Plants in the State of Minas Gerais

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Journal of Geographic Information System 2014年第5期6卷 423-439页

作者： Chigueru Tiba Ruibran Januario dos Reis Reis Julio Cesar Ezequiel da Costa Veronica Wilma Bezerra Azevedo Joao francisco abreu Melina Amoni Silveira Alves Daniel Pereira Guimaraes Marco Aurelio Dumont Porto Nuclear Energy department Federal University of PernambucoRecifeBrazil Programa de Pos-Graduacao em Geografia PUCBelo HorizonteBrazil Companhia Energetica de Minas Gerais Belo HorizonteBrazil Embrapa Milho e Sorgo Sete LagoasBrazil

The generation of heliothermal electricity has received increasing attention throughout the world in countries such as Spain, the USA, Germany and many others. In Brazil, this type of energy generation in the form of large projects (above 80 MW) remains unexplored. However, it is known that in the country, there are extensive areas of normal direct irradiation with high intensity and a low seasonality factor, especially in the semiarid regions in Brazil, mainly the North and Northeast of Minas Gerais. Moreover, these Minas Gerais regions have other significant characteristics for the installation of these plants: proximity to transmission lines, flatness, the fact that the respective vegetation is not endangered, a suitable land use profile (availability of land not used in agriculture), low wind speed, low population density, and, most recently, an increase in the demand for local electric energy due to the economic growth above the Brazilian average rate. Furthermore, the introduction of solar plants in that region, due to its distributed nature, will bring development and growth to the region (normally poor) by generating employment and income. This article presents a study of the optimal location of thermoelectric plants in the semiarid regions of Minas Gerais, conducted with Geographical Information System (GIS) technology. GIS consists of a set of specialised resources that allow the manipulation of spatial data, bringing efficiency and agility in the identification of suitable places for the installation of solar plants, while simultaneously enabling the consideration of future scenarios for energy planning, with its respective impact, costs and benefits. The study has identified very promising solar irradiation levels for the electric generation by solar energy, whether thermoelectric or photovoltaic, reaching an annual solar irradiation of 2700 kWh/m2 in the summer and in the range of 2200 - 2400 kWh/m2 on an annual basis. This area includes a vast region i

关键词： Solar Energy Thermoelectric Solar Plant Geographical Information System Promising Regions in the Minas Gerais

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Real-world disease activity and sociodemographic,clinical and treatment characteristics of moderate-to-severe inflammatory bowel disease in Brazil

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World Journal of Gastroenterology 2021年第2期27卷 208-223页

作者： Cyrla Zaltman Rogério Serafim Parra Ligia Yukie Sassaki Genoile Oliveira Santana Maria de Lourdes abreu Ferrari Sender J Miszputen Heda M B S Amarante Roberto Luiz Kaiser Junior Cristina Flores Wilson R Catapani JoséMiguel Luz Parente Mauro Bafutto Odery Ramos Carolina D Gonçalves Isabella Miranda Guimaraes Jose J R da Rocha Marley R Feitosa Omar Feres Rogerio Saad-Hossne francisco Guilherme Cancela Penna Pedro Ferrari Sales Cunha Tarcia NF Gomes Rodrigo Bremer Nones Mikaell Alexandre Gouvea Faria Mírian Perpétua Palha Dias Parente António S Scotton Rosana Fusaro Caratin Juliana Senra Júlio Maria Chebli department of Internal Medicine Federal University of Rio de JaneiroRio de Janeiro 21941-913Brazil department of Surgery and Anatomy Ribeirão Preto Medical SchoolUniversity of São PauloRibeirao Preto 14049-900São PauloBrazil department of Internal Medicine São Paulo State University(UNESP)Medical SchoolBotucatu 18618-687São PauloBrazil IBD Unit Federal University of BahiaSalvador 41150-000BahiaBrazil department of Clinical Medicine Medical SchoolUniversidade Federal de Minas GeraisBelo Horizonte 30130-100Minas GeraisBrazil department of Gastroenterology Escola Paulista de MedicinaSão Paulo 04023-900Brazil Hospital de Clinicas Universidade Federal do ParanaCuritiba 80060-900ParanaBrazil department of Proctology Beneficencia Portuguesa Hospital/Kaiser Day HospitalSao Jose do Rio Preto 15015110São PauloBrazil department of Gastroenterology and Hepatology Sciences Hospital de ClínicasUniversidade Federal do Rio Grande do SulPorto Alegre 90560002Rio Grande do SulBrazil department of Gastroenterology Faculdade de Medicina do ABCSanto Andre 09060-870São PauloBrazil department of General Medicine Gastroenterology UnitUniversity HospitalFederal University of PiauiTeresina 64049-550PiauíBrazil department of Gastroenterology Faculdade de MedicinaUniversidade Federal de GoiásGoiania 74535-170GoiasBrazil department of Surgery Botucatu Medical School at São Paulo State University(UNESP)Botucatu 18618687São PauloBrazil department of Gastroenterology UNIFESPSão Paulo 04040-002Brazil IBD unit Gastroenterology DepartmentHospital Nossa Senhora das GraçasCuritiba 80810-040ParanaBrazil department of Proctology Kaiser Hospital DiaSao Jose do Rio Preto 15015-110São PauloBrazil Health Sciences Center Epidemiology UnitState University of PiauiTeresina 64001-280PiauíBrazil department of Gastroenterology CMIP Centro Mineiro de PesquisaJuiz de Fora 36010-570Minas GeraisBrazil Scientific Affairs Takeda Pharmaceuticals BrazilSão Paulo 04709-011Brazil Clinical Research Takeda Pharma

BACKGROUND Understanding the treatment landscape of inflammatory bowel diseases(IBD)is essential for improving disease management and patient *** is the largest Latin American country,and it presents socioeconomic and health care differences across its geographical *** country has the highest increase in IBD incidence and prevalence in Latin America,but information about the clinical and treatment characteristics of IBD is *** To describe the sociodemographic,clinical,and treatment characteristics of IBD outpatients in Brazil overall and in the Southeast,South and Northeast/Midwest *** Multicenter,cross-sectional study with a 3-year retrospective chart review *** with moderate-to-severe Crohn’s disease(CD)or ulcerative colitis(UC)were consecutively enrolled between October 2016 and February *** CD at enrollment was defined as a Harvey Bradshaw Index≥8 or a CD Activity Index≥220 or a calprotectin level>200μg/g or an active result based on colonoscopy suggestive of inadequate control during the previous year;active UC was defined as a partial Mayo score≥*** statistics were used to analyze all *** In a total of 407 included patients,CD was more frequent than UC,both overall(264 CD/143 UC patients)and by region(CD:UC ratios of 2.1 in the Southeast,1.6 in the South and 1.2 in the Northeast/Midwest).The majority of patients were female(54.2%of CD;56.6%of UC),and the mean ages were 45.9±13.8 years(CD)and 42.9±13.0 years(UC).The median disease duration was 10.0(range:0.5-45)years for both IBD *** enrollment,44.7%[95%confidence interval(CI):38.7-50.7]of CD patients and 25.2%(95%CI:18.1-32.3)of UC patients presented with active *** than 95%of IBD patients were receiving treatment at enrollment;CD patients were commonly treated with biologics(71.6%)and immunosuppressors(67.4%),and UC patients were commonly treated with mesalazine[5-Aminosalicylic acid(5-ASA)]derivates(69.9%)and

关键词： Inflammatory bowel disease Crohn's disease Ulcerative colitis Disease activity Epidemiology Treatment

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Virtual screening of flavonoids from Jatropha gossypiifolia *** potential drugs for diabetic complications

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Traditional Medicine Research 2022年第2期7卷 34-42页

作者： Yudith Cañizares-Carmenate Roberto Díaz-Amador Mirtha Mayra Gonzalez-Bedia Tan Tran Quang Nhat francisco Torrens Juan Alberto Castillo-Garit Unit of Computer-Aided Molecular“Biosilico”Discovery and Bioinformatic Research Departamento de FarmaciaFacultad de Química-FarmaciaUniversidad Central“Marta Abreu”de Las VillasSanta Clara 54830Villa ClaraCuba departamento de Ciencias de la Computación Facultad de MatemáticaFísica y ComputaciónUniversidad CelaraCuntral“Marta Abreu”de Las VillasSanta Clara 54830Villa ClaraCuba Institut Universitari de Ciència Molecular Universitat de ValènciaEdifici d’Instituts de PaternaP.O.Box 22085ValènciaSpain. Unidad de Toxicología Experimental Universidad de Ciencias Médicas de Villa ClaraSanta Clara 50200Villa ClaraCuba.

Background:Diabetes mellitus is a chronic metabolic disease that is a risk factor for epidemic *** hyperglycemic conditions,the enzyme aldose reductase catalyzes the formation of sorbitol in the metabolism of glucose via polyols,leading to the development of diabetic ***,inhibitors of this enzyme are therapeutic targets for the prophylaxis and treatment of these ***:In this study,a generalized linear regression model was developed to analyze flavonoids-obtained from a database-that have been tested as inhibitors of aldose *** this sense,the molecular descriptors implemented in DRAGON and MATLAB software were used to determine the correlation between the chemical structure of the inhibitors and their pharmacological *** model was validated according to the Organisation for Economic Co-operation and development Standards and subsequently used for the virtual screening of the flavonoids identified in Jatropha gossypiifolia ***:The proposed model showed a good fit for its statistical parameters(R2=0.95).In addition,it showed good predictive power(R2 ext=0.94)and robustness(Q2 LOO=0.92).The experimental chemical space wherein the predictions were reliable(domain of application)was also ***,the model was used to identify 10 flavonoids from Jatropha gossypiifolia *** candidates for natural *** with a low probability of oral absorption were identified,among which the elagic acid biflavonoid showed the greatest promise(pIC50 predicted=9.75).Conclusion:The Jatropha gossypiifolia *** harbors flavonoids with high potential as inhibitors of the aldose reductase enzyme,in which the biflavonoid ellagic acid was shown to be the most promising inhibitor of the aldose reductase enzyme,suggesting its possible use in the treatment of the late complications of diabetes mellitus.

关键词： Jatropha gossypiifolia L. aldose reductase generalized linear regression model diabetic complications

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