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Association between EGF +61A/G polymorphism and gastric cancer in Caucasians

World journal of Gastroenterology 2011年第4期17卷 488-492页

作者： ana Paula araújo Bruno M Costa ana L Pinto-Correia Maria Fragoso Paula Ferreira Mário Dinis-Ribeiro Sandra Costa Rui M Reis Rui Medeiros Molecular Oncology Group Portuguese Institute of Oncology of Porto Life and Health Sciences Research Institute (ICVS) School of Health Sciences Oncology department Portuguese Institute of Oncology of Porto Gastroenterology department Portuguese Institute of Oncology of Porto Portugal Cintesis/Faculty of Medicine University of Porto Centro de Estudos em Biomedicina Health Sciences Faculty-Fernando Pessoa University Instituto de Ciencias Biomédicas de Abel Salazar Abel Salazar Institute for the Biomedical Sciences

AIM: To investigate the association between epidermal growth factor (EGF) +61A/G polymorphism and susceptibility to gastric cancer, through a cross-sectional study. METHODS: Polymerase chain reaction resctriction fragment lenght polymorphism analyses were used to genotype EGF +61 in 207 patients with gastric lesions (162 patients with gastric adenocarcinomas, 45 with atrophy or intestinal metaplasia) and 984 controls. All subjects were Caucasian. RESULTS: Genotype distribution was 23.5% for GG and 76.5% for GA/AA in the control group, 18.4% for GG and 68.6% for GA/AA in the entire group with gastric lesions and 17.9% for GG and 82.1% for GA/AA in the group with gastric adenocarcinoma. No statistically significant associations were found between EGF +61 variants and risk for developing gastric cancer [odds ratios (OR) = 1.41, 95% confidence intervals (CI): 0.90-2.21, P = 0.116]. However, the stratification of individuals by gender revealed that males carrying A alleles (EGF +61A/G or AA) had an increased risk for developing gastric cancer as compared to GG homozygous males (OR = 1.55, 95% CI: 1.05-2.28, P = 0.021). CONCLUSION: In summary, we found that males who were A carriers for EGF +61 had an increased risk for developing gastric cancer. This result may be explained by the suggestion that women secrete less gastric acid than men.

关键词： Epidermal growth factor polymorphism Epidermal growth factor receptor Gastric cancer

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Antibacterial activity and inhibition against Staphylococcus aureus NorA efflux pump by ferulic acid and its esterified derivatives

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Asian Pacific journal of Tropical Biomedicine 2021年第9期11卷 405-413页

作者： Patrícia Gonçalves Pinheiro Gilvandete Maria Pinheiro Santiago Francisco Erivaldo Freitas da Silva ana Carolina Justino de araújo Cícera Rejane Tavares de Oliveira Priscilla Ramos Freitas Janaína Esmeraldo Rocha joséBezerra de araújo Neto Maria Milene Costa da Silva Saulo Relison Tintino Irwin Rose Alencar de Menezes Henrique Douglas Melo Coutinho joséGalberto Martins da Costa departamento de Química Biológica Programa de Pos-Graduação em Química BiológicaUniversidade Regional do Cariri–URCACrato–CEBrazil Programa de Pós-Graduação em Química Centro de CiênciasUniversidade Federal do Ceará–UFCFortaleza–CEBrazil

Objective:To evaluate the inhibitory activity of ferulic acid and four of its esterified derivatives(methyl,ethyl,propyl,and butyl)against resistance mechanisms in Staphylococcus aureus ***:Ferulic acid derivatives were obtained by esterification with methanol,ethanol,propanol,and butanol,and then characterized by hydrogen and carbon-13 nuclear magnetic resonance *** minimum inhibitory concentrations(MIC)of ferulic acid and its esterified derivatives,ethidium bromide,and norfloxacin were obtained using the microdilution test,while the efflux pump inhibition test was conducted by examining reduction in the MICs of norfloxacin and ethidium *** docking was also carried out using the Schrodinger Suite 2015 molecular modeling software.A three-dimensional model of NorA efflux pump was generated using *** best scoring model was used as a receptor for ligand-receptor ***:The methyl and butyl ester derivatives did not demonstrate significant antimicrobial ***,a significant synergic effect was evidenced when norfloxacin was combined with the ethyl and propyl esterified *** docking study demonstrated favorable energy of interaction between ferulate derivatives and NorA,and amino acid residues TYR57,TYR58,and LEU255 were present commonly in stabilizing all *** PCA analysis corroborated the docking hypothesis that the lipophilic character and hydrogen bond interactions were the most relevant characteristics involved with NorA *** pharmacokinetic parameters of ferulic acid derivatives showed good ADMET properties,demonstrating that they can be easily absorbed and have no effect or inhibit the cytochrome P450 enzyme complex,revealing their potential as drug ***:This study provides strong evidence that the molecular basis for this activity is potentially due to the NorA efflux pump.

关键词： Ferulic acid Esterified derivatives Efflux pump Staphylococcus aureus Resistance mechanisms

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Overcoming mitochondrial dysfunction in neurodegenerative diseases

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Neural Regeneration Research 2023年第7期18卷 1486-1488页

作者： joão Pessoa ana I.Duarte CNC-Center for Neuroscience and Cell Biology CIBB-Center for Innovative Biomedicine and BiotechnologyUniversity of CoimbraCoimbraPortugal

Due to their intense electrical activity,neurons have high energy *** requirement makes them particularly sensitive to mitochondrial *** all eukaryotic cells,neurons have intrinsic mechanisms to mitigate the impact of mitochondrial dysfunction and its consequent production of toxic *** such(neuro)protective mechanisms,mitochondrial autophagy(mitophagy)is responsible for the removal of dysfunctional *** inhibition of mitophagy,together with insufficient mitochondrial activity,results in a shortage of adenosine triphosphate(ATP)and the accumulation of reactive oxygen species(ROS)(Simmons et al.,2020).

关键词： protective dysfunction intense

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Bioaccessibility of phenolic compounds from Brazilian grape juices using a digestion model with intestinal barrier passage

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Food Bioscience 2023年第2期52卷 1343-1351页

作者： Maria da Conceicao Prudencio Dutra ana Beatriz Martins da Silva Ederlan de Souza Ferreira ana Julia de brito araujo Carvalho Marcos dos Santos Lima Aline Camarao Telles Biasoto Graduate Program in Food Science Faculty of PharmacyFederal University of BahiaSalvadorBahiaBrazil Federal Institute of Education Science and Technology of Sertao PernambucanoLiquid Chromatography LaboratoryCampus IndustrialPetrolinaPernambucoBrazil Brazilian Agricultural Research Corporation Embrapa Semi-arid RegionPetrolinaPernambucoBrazil Brazilian Agricultural Research Corporation Embrapa EnvironmentJaguariunaSao PauloBrazil

Grape juices are rich in bioactive compounds;however,for these compounds to exert their functionality,they must be ***,the present study evaluated a simulated digestion process on the main bioactive compounds of monovarietal grape juices of five Brazilian hybrid cultivars(*** x ***).Characterization of the chemical profiles in liquid chromatography(HPLC-DAD-RID),behaviour of phenolics in the stages of digestion and bioaccessibility through the INFOGEST protocol plus intestinal barrier passage were carried *** the 24 polyphenols identified in the grape juice samples,11 were bioaccessible,with emphasis on the class of *** B2(101-426%),(+)-catechin(169-370%)and gallic acid(61-230%)stood out in all juices,showing that these compounds are key to the functionality of these *** were observed to differ between juices,demonstrating that factors such as the cultivar should be explored more extensively in studies on functional *** study also suggests that quality components such as sugars and organic acids influence the bioaccessibility of beverages.

关键词： Grape cultivars Functional beverages Phytochemicals Digestion simulation Bioactivity

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The brain as a source and a target of prolactin in mammals

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Neural Regeneration Research 2022年第8期17卷 1695-1702页

作者： ana R.Costa-brito Isabel Gonçalves Cecília R.A.Santos CICS-UBI-Health Sciences Research Centre Universidade da Beira InteriorCovilhãPortugal C4-UBI-Cloud Computing Competence Centre Universidade da Beira InteriorCovilhãPortugal

Prolactin is a polypeptide hormone associated with an extensive variety of biological *** the roles of prolactin in vertebrates,some were preserved throughout *** is the case of its function in the brain,where prolactin receptors,are expressed in different structures of the central nervous *** the brain,prolactin actions are principally associated with reproduction and parental behavior,and involves the modulation of adult neurogenesis,neuroprotection,and neuroplasticity,especially during pregnancy,thereby preparing the brain to *** is mainly produced by specialized cells in the anterior pituitary ***,during vertebrate evolution many other extrapituitary tissues do also produce prolactin,like the immune system,endothelial cells,reproductive structures and in several regions of the *** review summarizes the relevance of prolactin for brain function,the sources of prolactin in the central nervous system,as well as its local production and secretion.A highlight on the impact of prolactin in human neurological diseases is also provided.

关键词： brain brain disease choroid plexus neurogenesis neuroplasticity neuroprotection prolactin prolactin receptor

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Neotropical mustelids: fecal metabolome diversity and its potential for taxonomic discrimination

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Integrative Zoology 2023年第3期18卷 518-529页

作者： Lana Resende de ALMEIDA Marina Amaral ALVES ana Maria Obino MASTELLA Rafael GARRETT Maria joão Ramos PEREIRA Bird and Mammal Evolution Systematics and Ecology LabPrograma de Pós-Graduação em Biologia AnimalUniversidade Federal do Rio Grande do SulPorto AlegreRio Grande do SulBrazil Programa de Pós-Graduação em Biologia Animal Universidade Federal do Rio Grande do SulPorto AlegreRio Grande do SulBrazil Chemistry Institute Metabolomics Laboratory(LabMeta–LADETEC/IQ–UFRJ)Avenida Horácio MacedoFederal University of Rio de JaneiroRio de JaneiroRJBrazil Walter Mors Institute of Research on Natural Products Universidade Federal do Rio de JaneiroRio de JaneiroRJBrazil

Chemical proﬁles of non-invasive biological material,such as feces,have great potential to study elusive animals or those with low population ***,we use a metabolomic approach to evaluate Neotropical mustelids as a biological model to describe the diversity of the metabolites present in fecal samples,as well as to evaluate the potential of chemical proﬁles for taxonomic *** collected fecal samples from captive individuals of 5 species of mustelids occurring in Brazil and analyzed them by liquid chromatography coupled to high-resolution mass *** 200 compounds have been annotated;“bile acids,alcohols and derivatives”was the most expressive class in the metabolome of all the *** successfully discriminated 3 taxonomic groups:1—tayra(Eira barbara);2—otters(Lontra longicaudis and Pteronura brasiliensis;1);and 3—grisons(Galictis vittata and Galictis cuja).Several compounds seemed to be associated with food intake and the digestive process,while others were found for theﬁrst time in Neotropical *** concluded that mustelids show high metabolome diversity and that species-speciﬁc identiﬁcation through metabolomic proﬁles is possible,thus contributing to the development and implementation of additional non-invasive approaches in the study of mustelids.

关键词： chemical proﬁles ecology high-resolution mass spectrometry metabolomics Mustelidae

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Integrating species and successional classes for wood production in a mixed forest restoration system in a neotropical region

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journal of Forestry Research 2021年第6期32卷 2313-2321页

作者： ananias Francisco dias Junior ana Lucia Martins Sodero Pincelli ana Paula Camara da Silva Alison Moreira da Silva Natalia dias de Souza Mario Tommasiello Filho jose Otavio brito Wood and Forestry Science department Federal University of EspIrito Santo(UFES)Av.Governador Lindemberg316JerOnimo Monteiro CityES 29550-000Brazil São Paulo State School of Technology(FATec/SP) Av.DiacOno Jair de Oliveira651PiracicabaSP 13414-141Brazil Forest Products department Federal Rural University of Rio de Janeiro(UFRRJ)BR 465km 07SeropEdicaRJ 29890-000Brazil University of SAo Paulo “Luiz de Queiroz”College of Agriculture(USP/ESALQ)Av.PAdua Dias11PiracicabaSP 13418-900Brazil

As forests in neotropical regions,particularly in developing countries,are devastated,interventions to restore biodiversity and its ecological functions are *** producers have thus been encouraged to grow trees for wood production as an economic *** objective of this study was to quantify the increment of wood density of four forest species from different successional classes of a mixed system of restoration in a neotropical forest in *** discs were sampled at breast height and analyzed radially by X-ray densitometry to obtain apparent density and basic *** trees each of a species from the pioneer,early and late secondary successional stages and of the dominant species in the climax *** radial profiles indicated increasing density from the pith to bark of trunks,except for some variations due to wood defects and *** density was 0.576 g cm^(-3),0.655 g cm^(-3),0.706 g cm^(-3)and 0.775 g cm^(-3),respectively,for Peltophorum dubium,Schinus terebinthifolius,Cariniana estrellensis and Hymenaea *** profiles indicated higher amplitudes in the apparent densities for slow-growing species.X-ray densitometry generated parameters such as minimum,average and maximum densities,and radial density *** parameters are important for understanding the ecological functional role of successional classes of the Atlantic Forest from the Neotropical region.

关键词： X-ray densitometry Timber species of neotropical forest Successional classes of forest species Maintenance of forest restoration

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Mechanical behavior of iron ore tailings under standard compression and extension triaxial stress paths

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journal of Rock Mechanics and Geotechnical Engineering 2023年第7期15卷 1883-1894页

作者： Alexia Cindy Wagner joão Paulo de Sousa Silva joão Vítor de Azambuja Carvalho ana Luisa Cezar Rissoli Pedro Pazzoto Cacciari Helder Mansur Chaves Hugo Carlos Scheuermann Filho Nilo Cesar Consoli Universidade Federal do Rio Grande do Sul Porto Alegre90035-190Brazil Mineral development Centre Vale S.A.Santa Luzia33040-900Brazil department of Civil Geological and Mining EngineeringPolytechnique MontrealMontrealH3C 3A7Canada

The disposal of mining tailings has increasingly focused on the use of dry *** structures offer more security since they use filtered and compacted *** of the construction method and the heights achieved,the material that compounds the structure can be subjected to different stress paths along the failure *** theoretical framework considered in the design of these structures generally is the critical state soil mechanics(CSSM).However,the data in the literature concerning the uniqueness of critical state line(CSL)is still controversial as the soil is subjected to different stress *** respect to tailings,this question is even more *** paper studies two tailings with different gradings due to the beneficial processes over extension and compression paths.A series of drained and undrained triaxial tests was conducted over a range of initial densities and stress *** the q-p'plane,different critical stress ratio(M)values were obtained for compression and extension stress ***,the critical state friction angle is very similar with a slightly higher critical state friction angle for extension *** stress path dependent CSLs were obtained in the n-lnp0 plane with the extension tests below the CSL defined in *** the fines content,the studied tailings presented very similar M and critical state friction angle ***,the fines content af-fects the volumetric behavior of the studied tailings and the CSLs on the n-lnp0 plane shift downwards with the increasing fines content for compression and extension *** relation to dilatancy analysis,the fines content did not present an evident influence on the dilatancy of the ***,different values of mean stress ratio N were obtained between compression and extension tests and can corroborate the existence of non-unique CSLs for these materials.

关键词： Iron ore tailings(IOTs) Dry stacking Critical state soil mechanics Extension tests Stress path

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Cloning and characterization of gene-resistant analogs(RGAs)involved in rust(Puccinia psidii) resistance in Eucalyptus grandis

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journal of Forestry Research 2015年第3期26卷 711-718页

作者： Marcelo Luiz Laia Acelino Couto Alfenas Sergio Hermínio Brommonschenkel Shinitiro Oda Eduardo josé de Melo Inaê Mariêde araú jo Silva Janaína Fernandes Gonalves Ariadne Marques departamento de Engenharia Florestal Universidade Federal dos Vales do Jequitinhonha e Mucuri DiamantinaMinas Gerais 39100-000 Brazil departamento de Fitopatologia Universidade Federal de Viosa Viosa Minas Gerais 36570-900 Brazil Suzano Bahia Sul Celulose S/A Suzano So Paulo Brazil

Disease-resistant genes play an important role in defending against a variety of pathogens and insect pests in plants. Most of the disease-resistant genes encode pro- teins with conserved leucine rich repeat and nucleotide binding site domains. In this study, we cloned and char- acterized gene-resistant analogs （RGAs） from Eucalyptus grandis using degenerate PCR, with primers specifically targeting these two domains. The amplified fragments were cloned into the pGEM-T vector and transformed into Escherichia coli. Among the 90 clones obtained, 13 were sequenced and compared with each other and with previ- ously identified gene-resistant diseases. A BLASTX search in GenBank revealed high similarities among the con- served domains of these cloned genes with RGA genes. Some clones, however, showed no significant similarity with DNA sequences in GenBank. Southern blotting ana- lysis identified several polymorphic RFLP loci between distinct genotypes. However, none of them co-segregated with the Puccinia psidii Winter resistance gene 1 （Ppr1） in a population study.

关键词： Cloning Conserved domains RGAs Rust Eucalyptus

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Identification of victims of the collapse of a mine tailing dam in Brumadinho

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Forensic Sciences Research 2022年第4期7卷 580-589页

作者： Ricardo Moreira araújo Yara Vieira Lemos Erlon dias do Nascimento Anna Helena Silva Paraizo Alberto Julius Alves Wainstein ana Paula Drummond-Lage Faculty of Medical Sciences of Minas Gerais Belo HorizonteBrazil Instituto Médico Legal AndréRoquette Belo HorizonteBrazil Corpo de Bombeiros Militar de Minas Gerais Juiz de ForaBrazil

The collapse of the B1 Dam of VALESAmining company in Brumadinho,Minas Gerais,Brazil was the largest humanitarian disaster and occupational accident in the country’s history,and it posed challenges regarding the management and identification of multiple *** evaluated the impact of the iron ore tailings on the victims’*** examined the scientific identification of the victims and the dynamics of the disaster over the 1st year after it *** also determined the socio-demographic profiles of the *** this retrospective,cross-sectional study,we investigated the expert reports of the victims’biological remains from 25 January 2019 to 25 January *** analysed the socio-demographic data,identification methods,identification status,identification time,and necroscopic *** the study period,259 of 270 victims were identified,and 603 biological materials were analysed;among them,86.2%were body parts and 13.8%were whole *** the total cases registered that year,476(78.9%)were submitted during the first 10 weeks after the *** ridge analysis accounted for 67.9%of primary identifications and DNAanalysis did so for 91.6%of re-identification *** dismemberment was 3.4 times greater among mine workers than among community *** males accounted for the greatest number of victims(Pdents underlines the occupational dangers in the mining industry and clarifies the dynamics of the *** the initial weeks after the dam collapsed,friction ridge analysis was the most appropriate method for ***,DNAanalysis became the most-used technique for identification and re-identification owing to the great volume of body parts and decomposed biological ***

关键词： Disasters victim identification tailings mining legal medicine developing countries man-made disasters traumatic amputation

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