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Candida albicans isolated from urine:Phenotypic and molecular identification,virulence factors and antifungal susceptibility

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Asian Pacific Journal of Tropical Biomedicine 2017年第7期7卷 624-628页

作者： Laura Wiebusch Adriana Araújo de Almeida-Apolonio Luana Mireli Carbonera Rodrigues Bruna de Paula Bicudo Danielly Beraldo dos Santos Silva danielle ferreira lonchiati Renata Pires de Araujo Alexéia Barufatti Grisolia Kelly Mari Pires de Oliveira Faculdade de Ciencias Biologicas e Ambientais Universidade Federal da Grande DouradosDouradosMSBrazil Faculdade de Medicina Universidade Federal de Mato Grosso do SulCampo GrandeMSBrazil Faculdade de Ciencias da Saude Universidade Federal da Grande DouradosDouradosMSBrazil Faculdade de Ciencias Agrarias e Veterinarias Universidade Estadual Paulista“Julio de Mesquita Filho”JaboticabalSPBrazil

Objective: To isolate Candida albicans(C. albicans) from the urine of hospitalized patients and assess the virulence factors and antifungal susceptibility profiles of the ***: Yeasts were identified using the chromogenic medium CHROMagar?, the VITEK~?2 system, hypertonic Sabouraud broth, tobacco agar, polymerase chain reaction,and DNA sequencing. The evaluated virulence factors were proteinase production,phospholipase production, and biofilm production on polystyrene. The broth microdilution technique was used to determine the minimum inhibitory ***: All yeasts isolated from urine were identified as C. albicans using both classical and molecular methods. Although 91.3% of the isolates showed no phospholipase activity, 56.5% showed strong proteinase activity and 91.7% produced biofilm. All microorganisms were sensitive to fluconazole, voriconazole and amphotericin B, but 56.5% of the yeasts showed resistance to ***: C. albicans isolates from urine have a high capacity for virulence and can be associated with infectious processes. Furthermore, the high percentage of isolates resistant to itraconazole is important because this antifungal agent is commonly used to treat fungal infections in the hospital environment.

关键词： Candidiasis Urinary tract Infection Virulence Antifungal susceptibility

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MYC and gastric adenocarcinoma carcinogenesis

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World Journal of Gastroenterology 2008年第39期14卷 5962-5968页

作者： danielle Queiroz Calcagno Mariana ferreira Leal Paulo Pimentel Assumpo Marília de Arruda Cardoso Smith Rommel Rodríguez Burbano Human Cytogenetics Laboratory Biology Science InstituteFederal University of ParáBelém PA 66075-900Brazil Genetics Division Department of Morphology and GeneticsFederal University of So PauloSo Paulo SP 04023-900Brazil Joo de Barros Barreto University Hospital Federal University of ParáBelém PA 66073-000Brazil

MYC is an oncogene involved in cell cycle regulation, cell growth arrest, cell adhesion, metabolism, ribosome biogenesis, protein synthesis, and mitochondrial function. It has been described as a key element of several carcinogenesis processes in humans. Many studies have shown an association between MYC deregulation and gastric cancer. MYC deregulation is also seen in gastric preneoplastic lesions and thus it may have a role in early gastric carcinogenesis. Several studies have suggested that amplification is the main mechanism of MYC deregulation in gastric cancer. In the present review, we focus on the deregulation of the MYC oncogene in gastric adenocarcinoma carcinogenesis, including its association with Helicobacterpylori （Hpylon] and clinical applications.

关键词： MYC Gastric adenocarcinoma Gastric preneoplastic lesions Gastric carcinogenesis Helicobacter pylori

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Targeting infections and inflammation through micro and nano-nutraceuticals

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Food Bioscience 2022年第5期49卷 50-67页

作者： Fabiana Helen Santos Sandeep K.Panda danielle Cristine Mota ferreira Gargi Dey Gustavo Molina Franciele Maria Pelissari Laboratory of Green Materials Institute of Science and TechnologyFederal University of Jequitinhonha and Mucuri ValleysCEP 39100-000DiamantinaMGBrazil Department of Food Technology School of Food EngineeringUniversity of CampinasMonteiro Lobato80CEP 13083-862CampinasSPBrazil School of Biotechnology Campus 11KIIT UniversityBhubaneswar751024India Laboratory of Food Materials Studies Department of Food TechnologyUniversity of ViçosaCEP 36570-900ViçosaMinas GeraisBrazil Laboratory of Food Biotechnology Institute of Science and TechnologyFederal University of Jequitinhonha and Mucuri ValleysCEP 39100-000DiamantinaMGBrazil

Nowadays,the pharma and food industries have been gearing up to meet the urgent need for anti-infective and anti-inflammatory nutritional *** this way,several nutraceutical compounds are being re-evaluated due to their established *** compounds have been or may be efficiently targeted against infections,inflammatory conditions and for immune ***,for successful management of these metabolic conditions,the nutraceuticals need to be designed into effective nutritional *** recent years there have been tremendous progress in the re-engineering of structurally delivery vehicles which provide stability,enhance bioaccessibility and bioavailability of these *** this perspective,this review focuses on the structural and functional aspects of several such bio-based delivery vehicles like the micro and nano particles,nano-emulsions and liposome-based *** aim is to bring forth recent information on the efficacious nutraceuticals and the suitable delivery vehicles which would be useful against infections and inflammatory conditions.

关键词： Bioactive compounds Bioavailability Probiotics Delivery systems Nanotechnology Infection diseases

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Clinical implication of 14-3-3 epsilon expression in gastric cancer

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World Journal of Gastroenterology 2012年第13期18卷 1531-1537页

作者： Mariana ferreira Leal danielle Queiroz Calcagno Smia Demachki Paulo Pimentel Assumpo Roger Chammas Rommel Rodríguez Burbano Marília de Arruda Cardoso Smith Genetics Division Department of Morphology and GeneticFederal University of So PauloSo Paulo 04023-900Brazil Pathology Service Joo de Barros Barreto University HospitalFederal University of ParáBelém 60673-000Brazil Surgery Service Joo de Barros Barreto University HospitalFederal University of ParáBelém 60673-000Brazil Laboratory of Experimental Oncology School of MedicineUniversity of So PauloSo Paulo 01246-903Brazil Human Cytogenetics Laboratory Institute of Biological SciencesFederal University of ParáBelém 66073-000Brazil

AIM:To evaluate for the first time the protein and mRNA expression of 14-3-3εin gastric ***:14-3-3εprotein expression was determined by western blotting,and mRNA expression was examined by real-time quantitative RT-PCR in gastric tumors and their matched non-neoplastic gastric tissue ***:Authors observed a significant reduction of 14-3-3εprotein expression in gastric cancer(GC)samples compared to their matched non-neoplastic *** levels of 14-3-3εwere also associated with diffuse-type GC and early-onset of this *** data suggest that reduced 14-3-3εmay have a role in gastric carcinogenesis ***:Our results reveal that the reduced 14-3-3εexpression in GC and investigation of 14-3-3ε interaction partners may help to elucidate the carcino-genesis process.

关键词： Gastric cancer 14-3-3 epsilon YWHAE Geneexpression Protein expression

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Interrelationship between chromosome 8 aneuploidy,C-MYC amplification and increased expression in individuals from northern Brazil with gastric adenocarcinoma

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World Journal of Gastroenterology 2006年第38期12卷 6207-6211页

作者： danielle Queiroz Calcagno Mariana ferreira Leal Aline Damaceno Seabra Andre Salim Khayat Elizabeth Suchi Chen Samia Demachki Paulo Pimentel Assumpcao Mario Henrique Girao Faria Silvia Helena Barem Rabenhorst Márcia Valéria Pitombeira ferreira Marília de Arruda Cardoso Smith Rommel Rodríguez Burbano Human Cytogenetics and Toxicological Genetics Laboratory Department of BiologyCenter of Biological SciencesFederal University of ParáBelémPABrazil Genetics Division Department of Morphology Federal University of Sao PauloSao PauloSPBrazil Department of Pathology and Surgery Service Federal University of ParáBelémPABrazil Joao de Barros Barreto University Hospital Federal University of ParáBelémPABrazil Molecular Genetics Laboratory Department of Pathology Medical SchoolFederal University of CearáFortalezaCEBrazil

AIM: To investigate chromosome 8 numerical aberra- tions, C-MYC oncogene alterations and its expression in gastric cancer and to correlate these findings with histo- pathological characteristics of gastric tumors. METHODS: Specimens were collected surgically from seven patients with gastric adenocarcinomas. Immu- nostaining for C-MYC and dual-color fluorescence in situ hybridization (FISH) for C-MYC gene and chromosome 8 centromere were performed. RESULTS: All the cases showed chromosome 8 aneu- ploidy and C-MYC amplification, in both the diffuse and intestinal histopathological types of Lauren. No significant difference (P < 0.05) was observed between the level ofchromosome 8 ploidy and the site, stage or histological type of the adenocarcinomas. C-MYC high amplification, like homogeneously stained regions (HSRs) and double minutes (DMs), was observed only in the intestinal-type. Structural rearrangement of C-MYC, like translocation, was observed only in the diffuse type. Regarding C-MYC gene, a significant difference (P < 0.05) was observed between the two histological types. The C-MYC protein was expressed in all the studied cases. In the intestinal- type the C-MYC immunoreactivity was localized only in the nucleus and in the diffuse type in the nucleus and cytoplasm. CONCLUSION: Distinct patterns of alterations between intestinal and diffuse types of gastric tumors support the hypothesis that these types follow different genetic path- ways.

关键词： Chromosome 8 aneuploidy C-MYC amplification Immunostaining Gastric adenocarcinoma

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Promoter hypermethylation of CDH1, FHIT, MTAP and PLAGL1 in gastric adenocarcinoma in individuals from Northern Brazil

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World Journal of Gastroenterology 2007年第18期13卷 2568-2574页

作者： Mariana ferreira Leal Eleonidas Moura Lima Patrícia Natália Oliveira Silva Paulo Pimentel Assumpo danielle Queiroz Calcagno Spencer Luiz Marques Payo Rommel Rodríguez Burbano Marília de Arruda Cardoso Smith Genetics Division Department of Morphology Federal University of So Paulo So Paulo SP Brazil Department of Biology Campus Ministro Reis Velloso/Parnába Federal University of Piauí PI Brazil Joo de Barros Barreto University Hospital Federal University of Pará Belém PA Brazil Human Cytogenetics and Toxicological Genetics Laboratory Department of Biology Center of Biological Sciences Federal University of Pará Belém PA Brazil Genetics and Molecular Biology Hemocenter Faculty of Medicine of Marília Marília SP Brazil

AIM：To evaluate the methylation status of CDH1, FHIT, MTAP and PLAGL1 promoters and the association of these findings with clinico-pathological characteristics.METHODS： Methylation-specific PCR （MSP） assay was performed in 13 nonneoplastic gastric adenocarcinorna, 30 intestinal-type gastric adenocarcinorna and 35 diffuse-type gastric adenocarcinorna samples from individuals in Northern Brazil. Statistical analyses were performed using the chi-square or Fisher＇s exact test to assess associations between rnethylation status and clinico-pathological characteristics.RESULTS： Hypermethylation frequencies of CDH1, FHIT, MTAPand PLAGL1 promoter were 98.7%, 53.9%, 23.1% and 29.5%, respectively. Hyperrnethylation of three or four genes revealed a significant association with diffuse-type gastric cancer compared with nonneoplastic cancer. A higher hyperrnethylation frequency was significantly associated with H pylori infection in gastric cancers, especially with diffuse-type. Cancer samples without lymph node metastasis showed a higher FHIT hypermethylation frequency. MTAP hypermethylation was associated with H pylori in gastric cancer samples, as well as with diffuse-type compared with intestinal-type. In diffuse-type, MTAP hypermethylation was associated with female gender.CONCLUSION： Our findings show differential gene methylation in tumoral tissue, which allows us to conclude that hypermethylation is associated with gastric carcinogenesis. MTAP promoter hypermethylation can be characterized as a marker of diffuse-type gastric cancer, especially in women and may help in diagnosis, prognosis and therapies. The H pylori infectious agent was present in 44.9% of the samples. This infection may be correlated with the carcinogenic process through the gene promoter hypermethylation, especially the MTAP promoter in diffuse-type. A higher H pylori infection in diffuse-type may be due to greater genetic predisposition.

关键词： Gastric adenocarcinoma DNA hypermethylation CDH1 FHIT MTAP PLAGL1

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Environmental determinants of social wasp diversity and assemblage structure in an Amazonian archipelagic landscape

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Zoological Research(Diversity and Conservation) 2024年第2期1卷 121-129页

作者： Jose Victor Alves ferreira Alexandre Somavilla Maíra Benchimol Ana Filipa Palmeirim Carlos A.Peres danielle Storck-Tonon Laboratório de Ecologia Aplicada àConservação Universidade Estadual de Santa CruzIlhéus 45662-900Brazil Instituto Nacional de Pesquisas da Amazônia Coordenação de BiodiversidadeManaus 69067-001Brazil CIBIO Centro de Investigação em Biodiversidade e Recursos GenéticosInBIO Laboratório AssociadoCampus de VairãoUniversidade do PortoVairão 4485-661Portugal BIOPOLIS Program in Genomics Biodiversity and Land PlanningCIBIOCampus de VairãoVairão 4485-661Portugal School of Environmental Sciences University of East AngliaNorwich NR47TJUK Instituto Juruá Manaus69057-060Brazil Programa de Pós-Graduação em Ambiente e Sistemas de Produção Agrícola(PPGASP) Universidade do Estado de Mato GrossoTangaráda Serra 78300-970Brazil

Hydropower development has become an important driver of habitat loss and fragmentation across lowland tropical *** ample evidence on the detrimental effects of insular habitat fragmentation on biodiversity,invertebrate taxa,that may be critical to ecosystem functioning,have been *** assessed the assemblage-level responses of social wasps to forest insularization induced by the Balbina Hydroelectric Dam in Central Brazilian *** Malaise trapping,we captured wasps on 27 forest islands and three continuous *** constructed Generalized Linear Models and employed a model selection approach to examine the impact of local variables(fire severity(FIRE)and basal area of pioneer tree species(PIONEER))and landscape-scale variables(amount of habitat(COVER))on patterns of species richness,composition,and body size of wasps.A total of 374 individuals(29 species)were collected across all sampling *** was the main predictor of species richness,while PIONEER was the only variable that explained variation in community composition,with a negative effect on body *** results add evidence to the pervasive impacts of large hydroelectric dams on tropical forest biodiversity,and suggest that social wasps,among other invertebrates,can be used as bioindicators in infrastructure development projects.

关键词： Habitat amount hypothesis Habitat fragmentation Habitat loss Hydroelectric dams Invertebrates

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Identification of IL11RA and MELK amplification in gastric cancer by comprehensive genomic profiling of gastric cancer cell lines

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World Journal of Gastroenterology 2016年第43期22卷 9506-9514页

作者： danielle Queiroz Calcagno Sylvia Santomi Takeno Carolina Oliveira Gigek Mariana ferreira Leal Fernanda Wisnieski Elizabeth Suchi Chen Taíssa Maíra Thomaz Araújo Eleonidas Moura Lima Maria Isabel Melaragno Samia Demachki Paulo Pimentel Assumpcao Rommel Rodriguez Burbano Marília Cardoso Smith Disciplina de Genética Departamento de Morfologia e GenéticaUniversidade Federal de Sao Paulo Núcleo de Pesquisas em Oncologia Hospital Universitário Joao de Barros Barreto Departamento de Biologia Molecular Universidade Federal da Paraíba Disciplina de Gastroenterologia Cirúrgica Universidade Federal de Sao Paulo Departamento de Ortopedia e Traumatologia Universidade Federal de Sao Paulo

AIM To identify common copy number alterations on gastric cancer cell *** Four gastric cancer cell lines(ACP02, ACP03, AGP01 and PG100) underwent chromosomal comparative genome hybridization and array comparative genome hybridization. We also confirmed the results by fluorescence in situ hybridization analysis using the bacterial artificial chromosome clone and quantitative real time PCR *** The amplification of 9p13.3 was detected in all cell lines by both methodologies. An increase in the copy number of 9p13.3 was also confirmed by fluorescence in situ hybridization analysis. Moreover, the interleukin 11 receptor alpha(IL11RA) and maternal embryonic leucine zipper kinase(MELK) genes, which are present in the 9p13.3 amplicon, revealed gains of the MELK gene in all the cell lines studied. Additionally, a gain in the copy number of IL11 RA and MELK was observed in 19.1%(13/68) and 55.9%(38/68) of primary gastric adenocarcinoma samples, respectively. CONCLUSION The characterization of a small gain region at 9p13.3 in gastric cancer cell lines and primary gastric adenocarcinoma samples has revealed MELK as a candidate target gene that is possibly related to the development of gastric cancer.

关键词： IL11RA Gastric cancer Genomic profiling MELK 9p13.3

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Reference genes for quantitative RT-PCR data in gastric tissues and cell lines

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World Journal of Gastroenterology 2013年第41期19卷 7121-7128页

作者： Fernanda Wisnieski danielle Queiroz Calcagno Mariana ferreira Leal Leonardo Caires dos Santos Carolina de Oliveira Gigek Elizabeth Suchi Chen Thaís Brilhante Pontes Paulo Pimentel Assumpo Mnica Barauna de Assumpo Smia Demachki Rommel Rodríguez Burbano Marília de Arruda Cardoso Smith Disciplina de Genética Departamento de Morfologia e GenéticaUniversidade Federal de So PauloSo Paulo 04023900Brazil Departamento de Ortopedia e Traumatologia Universidade Federal de So PauloSo Paulo 04038031Brazil Núcleo de Pesquisa em Oncologia Hospital Joo de Barros BarretoUniversidade Federal do ParáBelém 60673000Brazil Laboratório de Citogenética Humana Instituto de Ciências BiológicasUniversidade Federal do ParáBelém 66075110Brazil

AIM:To evaluate the suitability of reference genes in gastric tissue samples and cell ***:The suitability of genes ACTB,B2M,GAPDH,RPL29,and 18S rRNA was assessed in21 matched pairs of neoplastic and adjacent nonneoplastic gastric tissues from patients with gastric adenocarcinoma,27 normal gastric tissues from patients without cancer,and 4 cell lines using reverse transcription quantitative real-time polymerase chain reaction(RT-qPCR).The ranking of the best single and combination of reference genes was determined by NormFinder,geNorm,BestKeeper,and *** addition,GenEx software was used to determine the optimal number of reference *** validate the results,the mRNA expression of a target gene,DNMT1,was quantified using the different reference gene combinations suggested by the various software packages for ***:ACTB was the best reference gene for all gastric tissues,cell lines and all gastric tissues plus cell ***+B2M or ACTB+B2M was the best combination of reference genes for all the gastric *** the other hand,ACTB+B2M was the best combination for all the cell lines tested and was also the best combination for analyses involving all the gastric tissues plus cell *** to the GenEx software,2 or 3 genes were the optimal number of references genes for all the gastric *** relative quantification of DNMT1 showed similar patterns when normalized by each combination of reference *** level of expression of DNMT1 in neoplastic,adjacent non-neoplastic and normal gastric tissues did not differ when these samples were normalized using GAPDH+B2M(P=0.32),ACTB+B2M(P=0.61),or GAPDH+B2M+ACTB(P=0.44).CONCLUSION:GAPDH+B2M or ACTB+B2M is the best combination of reference gene for all the gastric tissues,and ACTB+B2M is the best combination for the cell lines tested.

关键词： Gastric cancer Reference gene Normalization Gene expression Quantitative real-time polymerase chain reaction

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Role of mi RNAs and their potential to be useful as diagnostic and prognostic biomarkers in gastric cancer

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World Journal of Gastroenterology 2016年第35期22卷 7951-7962页

作者： Kelly Cristina da Silva Oliveira Taíssa Maíra Thomaz Araújo Camila Inagaki Albuquerque Gabriela Alcantara Barata Carolina Oliveira Gigek Mariana ferreira Leal Fernanda Wisnieski Fernando Augusto Rodrigues Mello Junior André Salim Khayat Paulo Pimentel de Assumpcao Rommel Mário Rodriguez Burbano Marília Cardoso Smith danielle Queiroz Calcagno Núcleo de Pesquisas em Oncologia Universidade Federal do Pará Hospital Universitário Joao de Barros Barreto Disciplina de Genética Departamento de Morfologia e Genética Universidade Federal de Sao Paulo Laboratório de Citogenética Humana Instituto de Ciências Biológicas Universidade Federal do Pará

Alterations in epigenetic control of gene expression play an important role in many diseases, including gastric cancer. Many studies have identified a large number of upregulated oncogenic mi RNAs and downregulated tumour-suppressor mi RNAs in this type of cancer. In this review, we provide an overview of the role of mi RNAs, pointing to their potential to be useful as diagnostic and/or prognostic biomarkers in gastric cancer. Moreover, we discuss the influence of polymorphisms and epigenetic modifications on mi RNA activity.

关键词： Gastric cancer Epigenetic Diagnostic biomarkers miRNAs Prognostic biomarkers

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