45 results on '"Seiva, Fábio Rodrigues Ferreira"'
Search Results
2. Melatonin changes energy metabolism and reduces oncogenic signaling in ovarian cancer cells
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Silveira, Henrique Spaulonci, Cesário, Roberta Carvalho, Vígaro, Renan Aparecido, Gaiotte, Leticia Barbosa, Cucielo, Maira Smaniotto, Guimarães, Fernando, Seiva, Fábio Rodrigues Ferreira, Zuccari, Debora Aparecida P.C., Reiter, Russel J., and Chuffa, Luiz Gustavo de Almeida
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- 2024
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3. New approaches concerning the testis of Astyanax lacustris (Characidae): immunohistochemical studies
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Costa, Fabiano Gonçalves, Gomes, Chayrra Chehade, Adolfi, Mateus Contar, da Cruz Gallo de Carvalho, Mayra Costa, Zanoni, Marco Antônio, Seiva, Fábio Rodrigues Ferreira, and Borella, Maria Inês
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- 2023
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4. Melatonin modulates the Warburg effect and alters the morphology of hepatocellular carcinoma cell line resulting in reduced viability and migratory potential
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Cruz, Ellen Mayara Souza, Concato, Virginia Marcia, de Morais, Juliana Maria Bitencourt, Silva, Taylon Felipe, Inoue, Fabricio Seidy Ribeiro, de Souza Cremer, Milena, Bidóia, Danielle Lazarin, Machado, Rayanne Regina Beltrame, de Almeida Chuffa, Luiz Gustavo, Mantovani, Mário Sérgio, Panis, Carolina, Pavanelli, Wander Rogério, and Seiva, Fábio Rodrigues Ferreira
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- 2023
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5. REPERCUSSÕES DA DIETA RICA EM SACAROSE E DO PTEROSTILBENO SOBRE A MORFOLOGIA E INERVAÇÃO INTRÍNSECA DO DUODENO
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Barbosa, Ana Paula da Silva, primary, Menezes, Joice Moraes, additional, Caputo, Wesley Ladeira, additional, Rosa, Carlos Vinícius Dalto da, additional, Seiva, Fábio Rodrigues Ferreira, additional, and Schoffen, João Paulo Ferreira, additional
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- 2022
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6. Hepatocellular carcinoma and miRNAs: An in silico approach revealing potential therapeutic targets for polyphenols
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Chuffa, Luiz Gustavo de Almeida, de Souza, Milena Cremer, Cruz, Ellen Mayara Souza, Ferreira, Francielle Belinelli, de Morais, Juliana Maria Bitencourt, and Seiva, Fábio Rodrigues Ferreira
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- 2022
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7. The proteomic landscape of ovarian cancer cells in response to melatonin
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Cesário, Roberta Carvalho, Gaiotte, Leticia Barbosa, Cucielo, Maira Smaniotto, Silveira, Henrique Spaulonci, Delazari dos Santos, Lucilene, de Campos Zuccari, Debora Aparecida Pires, Seiva, Fábio Rodrigues Ferreira, Reiter, Russel J., and de Almeida Chuffa, Luiz Gustavo
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- 2022
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8. Melatonin regulates endoplasmic reticulum stress in diverse pathophysiological contexts: A comprehensive mechanistic review.
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de Almeida Chuffa, Luiz Gustavo, Seiva, Fábio Rodrigues Ferreira, Silveira, Henrique S., Cesário, Roberta Carvalho, da Silva Tonon, Karolina, Simão, Vinicius Augusto, Zuccari, Debora Aparecida P. C., and Reiter, Russel J.
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UNFOLDED protein response , *ENDOPLASMIC reticulum , *INSULIN resistance , *CELL death , *HOMEOSTASIS - Abstract
The endoplasmic reticulum (ER) is crucial for protein quality control, and disruptions in its function can lead to various diseases. ER stress triggers an adaptive response called the unfolded protein response (UPR), which can either restore cellular homeostasis or induce cell death. Melatonin, a safe and multifunctional compound, shows promise in controlling ER stress and could be a valuable therapeutic agent for managing the UPR. By regulating ER and mitochondrial functions, melatonin helps maintain cellular homeostasis via reduction of oxidative stress, inflammation, and apoptosis. Melatonin can directly or indirectly interfere with ER‐associated sensors and downstream targets of the UPR, impacting cell death, autophagy, inflammation, molecular repair, among others. Crucially, this review explores the mechanistic role of melatonin on ER stress in various diseases including liver damage, neurodegeneration, reproductive disorders, pulmonary disease, cardiomyopathy, insulin resistance, renal dysfunction, and cancer. Interestingly, while it alleviates the burden of ER stress in most pathological contexts, it can paradoxically stimulate ER stress in cancer cells, highlighting its intricate involvement in cellular homeostasis. With numerous successful studies using in vivo and in vitro models, the continuation of clinical trials is imperative to fully explore melatonin's therapeutic potential in these conditions. [ABSTRACT FROM AUTHOR]
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- 2024
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9. In Silico Analysis of Non-Conventional Oxidative Stress-Related Enzymes and Their Potential Relationship with Carcinogenesis.
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Seiva, Fábio Rodrigues Ferreira, Agneis, Maria Luisa Gonçalves, de Almeida, Matheus Ribas, Caputo, Wesley Ladeira, de Souza, Milena Cremer, das Neves, Karoliny Alves, Oliveira, Érika Novais, Justulin Jr., Luis Antônio, and Chuffa, Luiz Gustavo de Almeida
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GENE expression ,CANCER invasiveness ,PROTEIN expression ,DATA mining ,OXIDATIVE stress - Abstract
Carcinogenesis is driven by complex molecular events, often involving key enzymes that regulate oxidative stress (OS). While classical enzymes such as SOD, catalase, and GPx have been extensively studied, other, non-classical oxidative stress-related enzymes (OSRE) may play critical roles in cancer progression. We aimed to explore the role of OSRE involved in an OS scenario and to assess their potential contribution to carcinogenesis in some of the most prevalent cancer types. Through data mining and bioinformatic analysis of gene and protein expression and mutation data, we identified OSRE with altered expression and mutations across cancer types. Functional pathways involving EGFR, MT-ND, GST, PLCG2, PRDX6, SRC, and JAK2 were investigated. Our findings reveal that enzymes traditionally considered peripheral to OS play significant roles in tumor progression. Those OSRE may contribute to cancer initiation and progression, as well as be involved with cancer hallmarks, such as EMT and invasion, proliferation, and ROS production. In addition, enzymes like SRC and JAK2 were found to have dual roles in both promoting ROS generation and being modulated by OS. OSRE also interact with key oncogenic signaling pathways, including Wnt/β-catenin and JAK2/STAT3, linking them to cancer aggressiveness and therapeutic resistance. Future research should focus on translating these findings into clinical applications, including the development of novel inhibitors or drugs targeting these non-classical enzymes. [ABSTRACT FROM AUTHOR]
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- 2024
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10. Voluntary Exercise Attenuates Hyperhomocysteinemia, But Does not Protect Against Hyperhomocysteinemia-Induced Testicular and Epididymal Disturbances
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dos Santos, Dayane Priscila, Ribeiro, Diogo Farias, Frigoli, Giovanna Fachetti, Erthal, Rafaela Pires, da Silva Scarton, Suellen Ribeiro, de Lion Siervo, Glaucia Eloísa Munhoz, Seiva, Fábio Rodrigues Ferreira, Staurengo-Ferrari, Larissa, Verri, Jr, Waldiceu Aparecido, Deminice, Rafael, and Fernandes, Glaura Scantamburlo Alves
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- 2022
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11. Pterostilbene influences glycemia and lipidemia and enhances antioxidant status in the liver of rats that consumed sucrose solution
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de Morais, Juliana Maria Bitencourt, Cruz, Ellen Mayara Souza, da Rosa, Carlos Vinícius Dalto, Cesário, Roberta Carvalho, Comar, Jurandir Fernando, Moreira, Carolina Campos Lima, de Almeida Chuffa, Luiz Gustavo, and Seiva, Fábio Rodrigues Ferreira
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- 2021
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12. The role of Toll-like receptor 4 signaling pathway in ovarian, cervical, and endometrial cancers
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Lupi, Luiz Antonio, Cucielo, Maira Smaniotto, Silveira, Henrique Spaulonci, Gaiotte, Letícia Barbosa, Cesário, Roberta Carvalho, Seiva, Fábio Rodrigues Ferreira, and de Almeida Chuffa, Luiz Gustavo
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- 2020
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13. Mitochondrial functions and melatonin: a tour of the reproductive cancers
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de Almeida Chuffa, Luiz Gustavo, Seiva, Fábio Rodrigues Ferreira, Cucielo, Maira Smaniotto, Silveira, Henrique Spaulonci, Reiter, Russel J., and Lupi, Luiz Antonio
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- 2019
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14. The role of sex hormones and steroid receptors on female reproductive cancers
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Chuffa, Luiz Gustavo de Almeida, Lupi-Júnior, Luiz Antonio, Costa, Aline Balandis, Amorim, João Paulo de Arruda, and Seiva, Fábio Rodrigues Ferreira
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- 2017
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15. CRIAÇÃO DE VIDEOAULAS COM MATERIAIS DE BAIXO CUSTO: DISSEMINAÇÃO DO CONHECIMENTO DE MANEIRA ACESSIVEL E BARATA
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Seiva, Fábio Rodrigues Ferreira, primary, Caputo, Wesley Ladeira, additional, Silva, Laísa Ferreira da, additional, and Tashima, Cristiano Massao, additional
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- 2019
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16. AVALIAÇÃO HISTOPATOLÓGICA TESTICULAR APÓS UMA DIETA ELEVADA DE SACAROSE EM RATOS WISTAR
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Medaglia, Daniele Sapede Alvarenga, primary, PUNHAGUI, ANA PAULA FRANCO, additional, ERTHAL, RAFAELA PIRES, additional, SEIVA, FÁBIO RODRIGUES FERREIRA, additional, and FERNANDES, GLAURA SCANTAMBURLO ALVES, additional
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- 2023
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17. Comprehensive Profiling and Therapeutic Insights into Differentially Expressed Genes in Hepatocellular Carcinoma.
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Caputo, Wesley Ladeira, de Souza, Milena Cremer, Basso, Caroline Rodrigues, Pedrosa, Valber de Albuquerque, and Seiva, Fábio Rodrigues Ferreira
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DRUG repositioning ,SEQUENCE analysis ,CARCINOGENESIS ,PHOSPHOTRANSFERASES ,MICROARRAY technology ,RNA ,BIOINFORMATICS ,GENES ,GENE expression profiling ,RESEARCH funding ,TRANSCRIPTION factors ,HEPATOCELLULAR carcinoma - Abstract
Simple Summary: Hepatocellular carcinoma remains crucial due to its high prevalence and the need for improved understanding and treatment options. This study utilizes extensive microarray and RNA-seq data to identify key differentially expressed genes in hepatocellular carcinoma (HCC) and FDA-approved novel druggable genes. We uncovered potential associations between metal ion exposure and tumorigenesis, as well as the relevance of kinases in HCC. Topological analysis reveals 25 hub genes and their regulatory transcription factors, while computational drug repurposing suggests several novel therapeutic candidates targeting key genes, highlighting potential avenues for future experimental assays and clinical cohorts with HCC patients. Background: Drug repurposing is a strategy that complements the conventional approach of developing new drugs. Hepatocellular carcinoma (HCC) is a highly prevalent type of liver cancer, necessitating an in-depth understanding of the underlying molecular alterations for improved treatment. Methods: We searched for a vast array of microarray experiments in addition to RNA-seq data. Through rigorous filtering processes, we have identified highly representative differentially expressed genes (DEGs) between tumor and non-tumor liver tissues and identified a distinct class of possible new candidate drugs. Results: Functional enrichment analysis revealed distinct biological processes associated with metal ions, including zinc, cadmium, and copper, potentially implicating chronic metal ion exposure in tumorigenesis. Conversely, up-regulated genes are associated with mitotic events and kinase activities, aligning with the relevance of kinases in HCC. To unravel the regulatory networks governing these DEGs, we employed topological analysis methods, identifying 25 hub genes and their regulatory transcription factors. In the pursuit of potential therapeutic options, we explored drug repurposing strategies based on computational approaches, analyzing their potential to reverse the expression patterns of key genes, including AURKA, CCNB1, CDK1, RRM2, and TOP2A. Potential therapeutic chemicals are alvocidib, AT-7519, kenpaullone, PHA-793887, JNJ-7706621, danusertibe, doxorubicin and analogues, mitoxantrone, podofilox, teniposide, and amonafide. Conclusion: This multi-omic study offers a comprehensive view of DEGs in HCC, shedding light on potential therapeutic targets and drug repurposing opportunities. [ABSTRACT FROM AUTHOR]
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- 2023
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18. Melatonin Reverses the Warburg-Type Metabolism and Reduces Mitochondrial Membrane Potential of Ovarian Cancer Cells Independent of MT1 Receptor Activation
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Cucielo, Maira Smaniotto, primary, Cesário, Roberta Carvalho, additional, Silveira, Henrique Spaulonci, additional, Gaiotte, Letícia Barbosa, additional, dos Santos, Sérgio Alexandre Alcantara, additional, de Campos Zuccari, Debora Aparecida Pires, additional, Seiva, Fábio Rodrigues Ferreira, additional, Reiter, Russel J., additional, and de Almeida Chuffa, Luiz Gustavo, additional
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- 2022
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19. N-acetylcysteine in high-sucrose diet-induced obesity: Energy expenditure and metabolic shifting for cardiac health
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Novelli, Ethel Lourenzi Barbosa, Santos, Priscila Portugal, Assalin, Heloisa Balan, Souza, Gisele, Rocha, Katiucha, Ebaid, Geovana Xavier, Seiva, Fábio Rodrigues Ferreira, Mani, Fernanda, and Fernandes, Ana Angélica
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- 2009
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20. Diagnóstico e Tratamento da COVID-19: protocolo de scoping review
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Bortolato-Major, Carina, Costa, Aline Balandis, Dalcol , Camila, Seiva, Fábio Rodrigues Ferreira, Alcantara, Leia Regina de Souza, Cruz, Carolina Fordellone Rosa, and Melo, Emiliana Cristina
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Tratamiento farmacológico ,Management of drug therapy ,Diagnóstico ,Infecciones por coronavirus ,Diagnosis ,Efeito do uso de drogas ,COVID-19 ,Efecto del uso de drogas ,SARS-COV-2 ,Coronavirus infections ,Pharmacological treatment ,Tratamento Farmacológico ,Infecções por coronavírus - Abstract
This protocol is aimed at mapping publications related to diagnosis and treatment of COVID-19. It is a scoping review protocol that follows the method preconized by the Joanna Briggs Institute, other authors and the Guideline Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for Scoping Reviews. The PCC strategy (population, concept and context) did systematize the search that did be performed in the months of May and June of 2020, within PubMed, Cochrane, Embase, CINAHL, LILACS, SCOPUS and Web of Science databases. As for grey literature, Google Scholar will be used. The results will be analyzed quantitatively and will be organized by themes and presented in terms of absolute and relative frequency. It is expected that this scoping review will contribute to the development of strategies for coping with the disease. Este protocolo tiene como objetivo localizar publicaciones relacionadas con el diagnóstico y el tratamiento del COVID-19. Es un protocolo scoping review de acuerdo con el método del Instituto Joanna Briggs Institute, otros autores y la guia Elementos de informes preferidos para revisiones sistemáticas y extensión de metaanálisis para revisiones de alcance. La estrategia PCC (población - concepto - contexto) sistematizado la búsqueda que se sucedio a cabo entre mayo y agosto del 2020, en las bases de datos de PubMed, Cochrane, Embase, CINAHL, LILACS, SCOPUS y Web of Science. De igual forma en literatura no convencional: Google Scholar. Os resultados serão analisados quantitativamente e serão organizados por temas e apresentados em termos de frequência absoluta e relativa. Se espera que esta revisión sistemática exploratoria contribuya a elaborar estrategias para enfrentar la enfermedad, así como al desarrollo de políticas de salud pública. Este protocolo tem como objetivo mapear as publicações relacionadas ao diagnóstico e tratamento da COVID-19. É um protocolo de revisão de escopo que segue o método preconizado pelo Joanna Briggs Institute, demais autores e a Diretriz Itens de Relatório Preferidos Para Revisões Sistemáticas e Extensão de meta-análises para revisões de escopo. A estratégia PCC (população, conceito e contexto) sistematizou a busca que foi realizada nos meses de maio e junho de 2020, nas bases de dados PubMed, Cochrane, Embase, CINAHL, LILACS, SCOPUS e Web of Science. Quanto à literatura cinzenta, serão usados o Google Scholar. Os resultados serão analisados quantitativamente e serão organizados por temas e apresentados em termos de frequência absoluta e relativa. Espera-se que esta revisão de escopo contribua para o desenvolvimento de estratégias de enfrentamento da doença.
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- 2021
21. Voluntary Exercise Attenuates Hyperhomocysteinemia, But Does not Protect Against Hyperhomocysteinemia-Induced Testicular and Epididymal Disturbances
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dos Santos, Dayane Priscila, primary, Ribeiro, Diogo Farias, additional, Frigoli, Giovanna Fachetti, additional, Erthal, Rafaela Pires, additional, da Silva Scarton, Suellen Ribeiro, additional, de Lion Siervo, Glaucia Eloísa Munhoz, additional, Seiva, Fábio Rodrigues Ferreira, additional, Staurengo-Ferrari, Larissa, additional, Verri, Waldiceu Aparecido, additional, Deminice, Rafael, additional, and Fernandes, Glaura Scantamburlo Alves, additional
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- 2021
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22. Melatonin-Loaded Nanocarriers: New Horizons for Therapeutic Applications
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Chuffa, Luiz Gustavo de Almeida, primary, Seiva, Fábio Rodrigues Ferreira, additional, Novais, Adriana Alonso, additional, Simão, Vinícius Augusto, additional, Martín Giménez, Virna Margarita, additional, Manucha, Walter, additional, Zuccari, Debora Aparecida Pires de Campos, additional, and Reiter, Russel J., additional
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- 2021
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23. COVID-19: The question of genetic diversity and therapeutic intervention approaches
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Figueiredo, David Livingstone Alves, primary, Ximenez, João Paulo Bianchi, additional, Seiva, Fábio Rodrigues Ferreira, additional, Panis, Carolina, additional, Bezerra, Rafael dos Santos, additional, Ferrasa, Adriano, additional, Cecchini, Alessandra Lourenço, additional, Medeiros, Alexandra Ivo de, additional, Almeida, Ana Marisa Fusco, additional, Ramão, Anelisa, additional, Boldt, Angelica Beate Winter, additional, Moya, Carla Fredrichsen, additional, Chin, Chung Man, additional, Paula, Daniel de, additional, Rech, Daniel, additional, Gradia, Daniela Fiori, additional, Malheiros, Danielle, additional, Venturini, Danielle, additional, Tavares, Eliandro Reis, additional, Carraro, Emerson, additional, Ribeiro, Enilze Maria de Souza Fonseca, additional, Pereira, Evani Marques, additional, Tuon, Felipe Francisco, additional, Follador, Franciele Aní Caovilla, additional, Fernandes, Glaura Scantamburlo Alves, additional, Volpato, Hélito, additional, Cólus, Ilce Mara de Syllos, additional, Oliveira, Jaqueline Carvalho de, additional, Rodrigues, Jean Henrique da Silva, additional, Santos, Jean Leandro dos, additional, Visentainer, Jeane Eliete Laguila, additional, Brandi, Juliana Cristina, additional, Serpeloni, Juliana Mara, additional, Bonini, Juliana Sartori, additional, Oliveira, Karen Brajão de, additional, Fiorentin, Karine, additional, Lucio, Léia Carolina, additional, Faccin-Galhardi, Ligia Carla, additional, Ferreto, Lirane Elize Defante, additional, Lioni, Lucy Megumi Yamauchi, additional, Consolaro, Marcia Edilaine Lopes, additional, Vicari, Marcelo Ricardo, additional, Arbex, Marcos Abdo, additional, Pileggi, Marcos, additional, Watanabe, Maria Angelica Ehara, additional, Costa, Maria Antônia Ramos, additional, Giannini, Maria José S. Mendes, additional, Amarante, Marla Karine, additional, Khalil, Najeh Maissar, additional, Lima Neto, Quirino Alves de, additional, Herai, Roberto H., additional, Guembarovski, Roberta Losi, additional, Shinsato, Rogério N., additional, Mainardes, Rubiana Mara, additional, Giuliatti, Silvana, additional, Yamada-Ogatta, Sueli Fumie, additional, Gerber, Viviane Knuppel de Quadros, additional, Pavanelli, Wander Rogério, additional, Silva, Weber Claudio da, additional, Petzl-Erler, Maria Luiza, additional, Valente, Valeria, additional, Soares, Christiane Pienna, additional, Cavalli, Luciane Regina, additional, and Silva Jr, Wilson Araujo, additional
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- 2021
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24. Weekend ethanol consumption and high-sucrose diet: resveratrol effects on energy expenditure, substrate oxidation, lipid profile, oxidative stress and hepatic energy metabolism
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Rocha, Katiucha Karolina Honório Ribeiro, Souza, Gisele Aparecida, Seiva, Fábio Rodrigues Ferreira, Ebaid, Geovana Xavier, and Novelli, Ethel Lourenzi Barbosa
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- 2011
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25. A meta‐analysis of microRNA networks regulated by melatonin in cancer: Portrait of potential candidates for breast cancer treatment
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Chuffa, Luiz Gustavo de Almeida, primary, Carvalho, Robson Francisco, additional, Justulin, Luis Antônio, additional, Cury, Sarah Santiloni, additional, Seiva, Fábio Rodrigues Ferreira, additional, Jardim‐Perassi, Bruna Victorasso, additional, Zuccari, Debora Aparecida Pires de Campos, additional, and Reiter, Russel J., additional
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- 2020
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26. Long-term sucrose solution consumption causes metabolic alterations and affects hepatic oxidative stress in wistar rats
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Souza Cruz, Ellen Mayra, primary, Bitencourt de Morais, Juliana Maria, additional, Rosa, Carlos Vinícius Dalto da, additional, Simões, Mellina da Silva, additional, Comar, Jurandir Fernando, additional, Chuffa, Luiz Gustavo de Almeida, additional, and Seiva, Fábio Rodrigues Ferreira, additional
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- 2020
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27. Melatonin Promotes Uterine and Placental Health: Potential Molecular Mechanisms
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de Almeida Chuffa, Luiz Gustavo, primary, Lupi, Luiz Antonio, additional, Cucielo, Maira Smaniotto, additional, Silveira, Henrique Spaulonci, additional, Reiter, Russel J., additional, and Seiva, Fábio Rodrigues Ferreira, additional
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- 2019
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28. A matemática como norteadora do evento de divulgação científica “Conhecendo o cérebro”
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Ekuni, Roberta, primary, Costa, Priscila Caroza Frasson, additional, Rocha, Luiz Renato Martins da, additional, Merlin, José Reinaldo, additional, Oliveira, Rone Batista de, additional, and Seiva, Fábio Rodrigues Ferreira, additional
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- 2019
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29. Clock genes and the role of melatonin in cancer cells: an overview
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Chuffa, Luiz Gustavo de Almeida, primary, Seiva, Fábio Rodrigues Ferreira, primary, Cucielo, Maira Smaniotto, primary, Silveira, Henrique Spaulonci, primary, Reiter, Russel J, primary, and Lupi, Luiz Antonio, primary
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- 2019
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30. Criação de vídeo-aulas com materiais de baixo custo: disseminação do conhecimento de maneira acessível e barata
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Seiva, Fábio Rodrigues Ferreira, Caputo, Wesley Ladeira, and Tashima, Cristiano Massao
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Acessibilidade ,Mídias digitais ,Ensino - vídeo-aula - Abstract
Anais do 35º Seminário de Extensão Universitária da Região Sul - Área temática: Educação Nos dias atuais, os meios de informação e comunicação estão cada vez mais flexíveis. A internet proporciona uma rápida busca de conhecimento em diversas fontes, o que antes só era possível por meio de livros. As vídeo-aulas são recursos multimídia e audiovisual, em que as informações transmitidas podem ser ouvidas e visualizadas, facilitando assim, a compreensão. Este trabalho tem como objetivo apresentar a metodologia utilizada pelo nosso grupo, para a elaboração de vídeo-aulas; mais precisamente, pretende-se demostrar como é possível o uso de materiais acessíveis e de baixo custo para criação de vídeos com qualidade. Todos os materiais utilizados para a montagem do “estúdio de gravação” são encontrados em lojas convencionais e são eles: papel alumínio, canos PVC, fio elétrico, papelão, cola-quente, pano de tecido, lâmpadas, lápis coloridos e folhas. Microfones e câmeras podem ser facilmente substituídos por celulares. Os refletores utilizados foram construídos com canos de PVC, papelão, papel alumínio, fios e lâmpadas, que podem ser de led ou incandescentes. O fundo do vídeo é construído sob um pano de tecido da cor verde, para a posterior inclusão de animações. Esse pano tem 2 x 4m, podendo variar o tamanho. Além da gravação do apresentador, pode-se utilizar ilustrações e esquemas, pré-preparados em folhas de papel sulfite e com lápis de cores. A criação de um “estúdio de gravação” de baixo custo se mostrou efetivo e possibilitou a confecção de um vídeo piloto cuja captação, tanto de áudio e imagem, foram de boa qualidade. Ressalta-se que parte do material a ser utilizado pode ser conseguido por meio de reciclagem. Assim, a disseminação do conhecimento acadêmico, por meio de vídeo-aulas, torna-se uma ferramenta importante e possível de ser executada por qualquer instituição
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- 2017
31. Minicurso: apresentações personalisadas - o PPT como estratégia comunicativa na Universidade
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Tashima, Cristiano Massao, Oliveira, Leticia Coutinho de, and Seiva, Fábio Rodrigues Ferreira
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Comunidade escolar ,Ensino-aprendizagem - Abstract
Anais do 35º Seminário de Extensão Universitária da Região Sul - Área temática: Educação As Tecnologias Digitais de Informação e Comunicação são excelentes ferramentas para melhorar a qualidade da educação, porém apenas utiliza-las não é a solução. É necessário contextualizá-las no processo ensino aprendizagem, uma vez que é comum confundir tecnologia de informação com conhecimento. A tecnologia de informação por si só não possui a capacidade de mudar o homem, mas o conhecimento pode alterar seu comportamento. Desta forma o objetivo deste trabalho é ampliar o conhecimento de docentes e acadêmicos quanto ao uso do PowerPoint, tornando-o mais produtivo. Foram realizados cinco encontros, divididos em três etapas. A primeira fase consistiu de três reuniões onde o programa foi apresentado, o assunto a ser trabalhado foi definido e a criação do roteiro textual construído. Na segunda etapa, realizada em um único encontro, os participantes assistiram a vídeos com conteúdo motivacionais e acessaram sites para auxilia-los no processo criativo e inspira-los. A finalização do projeto ocorreu com a produção das apresentações, bem como o compartilhamento dos conhecimentos adquiridos. Pôde-se verificar uma certa dificuldade por parte dos participantes quanto ao uso correto do programa e de suas ferramentas. A definição do assunto, bem como a criação do roteiro foi individual. Após serem instigados quanto aos seus processos criativos e induzi-los a se inspirarem, as apresentações foram criadas e compartilhadas fazendo com que cada ideia única fosse repassada dos seus detentores para os demais participantes. Ser criativo é uma capacidade inata do homem, porém se não estimulada ela tende a diminuir com o tempo. Logo o pensamento linear dificulta a contextualização das Tecnologias Digitais de Informação e Comunicação na educação, fazendo-as serem subutilizadas ou mesmo tornando-as ferramentas sem adequação
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- 2017
32. Alcohol extract of Bauhinia forficata link reduces lipid peroxidation in the testis and epididymis of adult Wistar rats
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Sampaio, Carolina Ferreira, primary, Lucchetta, Nicla Renata, additional, Punhagui, Ana Paula Franco, additional, Banedetti, Philippe Rodrigues, additional, Arakawa, Nilton Syogo, additional, Seiva, Fábio Rodrigues Ferreira, additional, and Fernandes, Glaura Scantamburlo Alves, additional
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- 2018
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33. Mitochondrial functions and melatonin: a tour of the reproductive cancers
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de Almeida Chuffa, Luiz Gustavo, primary, Seiva, Fábio Rodrigues Ferreira, additional, Cucielo, Maira Smaniotto, additional, Silveira, Henrique Spaulonci, additional, Reiter, Russel J., additional, and Lupi, Luiz Antonio, additional
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- 2018
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34. Alcohol extract of Bauhinia forficata link reduces lipid peroxidation in the testis and epididymis of adult Wistar rats.
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Sampaio, Carolina Ferreira, Lucchetta, Nicla Renata, Punhagui, Ana Paula Franco, Banedetti, Philippe Rodrigues, Arakawa, Nilton Syogo, Seiva, Fábio Rodrigues Ferreira, and Fernandes, Glaura Scantamburlo Alves
- Abstract
Bauhinia forficata is a medicinal plant that has flavonoid components with hypoglycemic, antioxidant, hepatoprotective, antibacterial, antiviral and anti‐inflammatory action. Aim of this study is to evaluate the action of B. forficata alcoholic extract in the male genital system of adult male Wistar rats. For that, 20 adult male Wistar rats were distributed into two experimental groups: the B. forficata group, receiving B. forficata alcoholic extract (0.1 ml/10 g body weight/day) on alternate days, and the control group, receiving just the vehicle for 30 days straight both via gavage. On the 31st day, the animals were euthanized, and the testis and epididymis were collected for histopathological, biochemical, morphometric, and sperm count analysis. Mass spectrometry identified new compounds in the extract: trans‐caffeic acid, liquiritigenin, gallocatechin, and 2,4,6‐trihydroxyphenanthren‐2‐glycoside. Biochemical analysis showed higher total cholesterol levels in the testis and lower malondialdehyde levels in the testis and epididymis, in the B. forficata group. The mast cell count showed a reduction in degranulated mast cells in the caput region of the epididymis, in the B. forficata group. The luminal compartment of the caput and the epithelial of the epididymis cauda were reduced, whereas the stromal region of the epididymis caput was increased in the B. forficata group, compared with the control group. The testicular tissue was less impaired, considering that all the histological analyses were similar to the control. We believe that B. forficata alcoholic extract in the male genital system showed antioxidant action, especially in the epididymal tissue. Mass spectra identified new compound in Bauhinia forficata alcoholic extractThe biochemical analysis was impaired by the extract in genital organs of ratsTesticular tissue was less impaired considering the histological analyses [ABSTRACT FROM AUTHOR]
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- 2019
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35. Increased toll-like receptors and p53 levels regulate apoptosis and angiogenesis in non-muscle invasive bladder cancer: mechanism of action of P-MAPA biological response modifier
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Garcia, Patrick Vianna, primary, Seiva, Fábio Rodrigues Ferreira, additional, Carniato, Amanda Pocol, additional, de Mello Júnior, Wilson, additional, Duran, Nelson, additional, Macedo, Alda Maria, additional, de Oliveira, Alexandre Gabarra, additional, Romih, Rok, additional, Nunes, Iseu da Silva, additional, Nunes, Odilon da Silva, additional, and Fávaro, Wagner José, additional
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- 2016
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36. A bioquímica do envelhecimento e obesidade
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Seiva, Fábio Rodrigues Ferreira [UNESP], Universidade Estadual Paulista (Unesp), and Novelli, Ethel Lourenzi Barbosa [UNESP]
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Aging ,Obesidade ,Envelhecimento ,Obesity ,Somatotropina - Abstract
Made available in DSpace on 2014-06-11T19:32:12Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-02-08Bitstream added on 2014-06-13T20:23:13Z : No. of bitstreams: 1 seiva_fr_dr_botfm.pdf: 3896394 bytes, checksum: 25ac2f0fac725c9d2ad1833b75059c15 (MD5) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) O envelhecimento populacional mundial é considerado um processo relativamente novo na história da humanidade e está associado a melhorias na área de prevenção e tratamento na saúde publica, bem como à diminuição da taxa de fertilidade, elevando rapidamente assim, o número de pessoas com mais de 60 anos em vários países ao redor do mundo (ACEVEDO, 1998). Embora esse aumento possa ser visto como um ponto positivo, ainda é preciso alcançar também melhorias na qualidade de vida entre as pessoas idosas. Comorbidades e complicações advindas de processos que acompanham o envelhecimento, tais quais, diabetes, sobrepeso e obesidade, hipertensão arterial, doenças neurodegenerativas e principalmente complicações cardiovasculares, ainda são problemas, que além de onerarem o sistema único de saúde, elevam a taxa de mortalidade na população senil. GH, ou hormônio de crescimento, produzido e secretado na hipófise anterior, atua direta ou indiretamente, via IGF-I (hormônio de crescimento insulina-símile) produzido principalmente no fígado, levando ao crescimento longitudinal ósseo, muscular e das cartilagens. O GH também é um importante mediador de algumas vias metabólicas, como a oxidação lipídica. Em relação ao metabolismo dos carboidratos, o GH apresenta efeitos antagônicos aos efeitos clássicos da insulina, sendo por muitos, considerado um hormônio diabetogênico (COPELAND et al, 1990; HAJIMA et al, 2005) Life expectancy is increasing in world population and with it, the incidence of public health problems such as obesity and cardiac alterations. Because growth hormone (GH) concentration is referred to be decreased in aging conditions, a question must be addressed: what is the effect of GH on aging related adverse changes? To investigate the effects of GH on cardiac energy metabolism and its association with calorimetric parameters, lipid profile and oxidative stress in aged and obese rats, initially 32 male Wistar rats were divided into two groups (n=16):(C) given standard-chow and water;(H) given hypercaloric-chow and receiving 30% sucrose in its drinking water. After 45 days, both C and H groups were divided into two subgroups (n=8):(C+PL) standard-chow, water and receiving saline subcutaneously;(C+GH) standard-chow, water and receiving 2 mg/kg/day rhGH subcutaneously;(H+PL) hypercaloricchow, 30% sucrose, receiving saline subcutaneously;(H+GH) hypercaloric-chow, 30% sucrose, receiving rhGH subcutaneously. After 30 days, C+GH and H+PL rats had higher body mass index, Lee-index, body fat content, percent-adiposity, serum triacylglycerol, cardiac lipid-hydroperoxide and triacylglycerol than C+PL. Energy-expenditure (RMR)/body weight, oxygen consumption and fat-oxidation were higher in H+GH than in H+PL. LDLcholesterol was highest in H+GH rats, whereas cardiac pyruvate-dehydrogenase and phosphofrutokinase activities were higher in H+GH and H+PL rats than in C+PL. In conclusion, the present study brought new insights on aging and obesity, demonstrating for the first time that GH therapy was harmful in aged and obesity conditions, impairing calorimetric parameters, lipid profile and oxidative stress. GH was disadvantageous in old rats, having undesirable effects on cardiac energy metabolism
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- 2011
37. Efeitos do hormônio de crescimento sobre o metabolismo energético e estresse oxidativo no miocárdio de ratos portadores de insuficiência cardíaca secundária à estenose aórtica
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Seiva, Fábio Rodrigues Ferreira [UNESP], Universidade Estadual Paulista (Unesp), and Novelli, Ethel Lourenzi Barbosa [UNESP]
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Somatotropina ,Fisiopatologia - Abstract
Made available in DSpace on 2014-06-11T19:23:32Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-02-12Bitstream added on 2014-06-13T19:29:40Z : No. of bitstreams: 1 seiva_frf_me_botfm.pdf: 670644 bytes, checksum: ccc77171cfda2b164b3a96480997f362 (MD5) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) O presente trabalho teve como objetivo avaliar os efeitos do hormônio de crescimento (GH) sobre o estresse oxidativo, metabolismo energético e sobre a fibrose miocárdica em ratos submetidos experimentalmente a insuficiência cardíaca. Foram utilizados 24 ratos Wistar machos, divididos em quatro grupos: controle recebendo salina (C-P) e controle recebendo GH (C-GH), estenose aórtica mais salina (EA-P) e estenose aórtica recebendo GH (EA-GH). A dose de GH utilizada foi de 1 mg/kg durante 14 dias. Os animais tratados com GH tiveram aumentados os níveis de IGF-I. Os dois grupos com EA tiveram a relação Peso do Coração/Peso Corporal maior quando comparados com os respectivos controles. O índice de fibrose miocárdica foi maior no grupo EA-P comparado aos grupos C e diminuiu no grupo EA tratado com o GH. Ambos os grupos tratados com GH tiveram elevada atividade da enzima lactato desidrogenase. O grupo EA-GH apresentou elevação da enzima marcadora do metabolismo de ácidos graxos (OHADH); já a enzima citrato sintase foi significantemente maior no grupo C-GH em relação aos grupos C-P e EA-GH. Os níveis de hidroperóxido de lipídio diminuíram nos animais do grupo EA-GH. Não houve alteração da enzima catalase nos quatro grupos estudados. A atividade da superóxido dismutase esteve maior nos grupos com EA. A principal via alterada pelo GH foi o sistema das glutationas. O GH aumentou a atividade da GSH-Px no grupo com EA. O grupo EA-P teve aumentada a relação GSH-GSSG, indicando um aumento do estresse oxidativo neste grupo. Conclui-se que o GH alterou as vias metabólicas do coração aumentando a oxidação de ácidos graxos e elevando o metabolismo anaeróbico. O GH também causou efeitos benéficos em relação ao estresse oxidativo, aumentando as defesas antioxidantes do coração, evitando os danos provocados pelos radicais livres. Not available.
- Published
- 2008
38. Increased toll-like receptors and p53 levels regulate apoptosis and angiogenesis in non-muscle invasive bladder cancer: mechanism of action of P-MAPA biological response modifier.
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Vianna Garcia, Patrick, Ferreira Seiva, Fábio Rodrigues, Pocol Carniato, Amanda, de Mello Júnior, Wilson, Duran, Nelson, Maria Macedo, Alda, de Oliveira, Alexandre Gabarra, Romih, Rok, da Silva Nunes, Iseu, da Silva Nunes, Odilon, José Fávaro, Wagner, Garcia, Patrick Vianna, Seiva, Fábio Rodrigues Ferreira, Carniato, Amanda Pocol, Macedo, Alda Maria, Nunes, Iseu da Silva, Nunes, Odilon da Silva, and Fávaro, Wagner José
- Subjects
APOPTOSIS ,NEOVASCULARIZATION ,BLADDER cancer ,CARCINOGENS ,TOBACCO & cancer ,PROTEIN metabolism ,ANIMAL experimentation ,BCG vaccines ,BIOCHEMISTRY ,BLADDER tumors ,CANCER invasiveness ,CELL physiology ,CELL receptors ,GENES ,IMMUNOLOGICAL adjuvants ,IMMUNOTHERAPY ,PHENOMENOLOGY ,ORGANOPHOSPHORUS compounds ,RATS ,TUMORS ,LINOLEIC acid ,INTRAVESICAL administration ,PATHOLOGIC neovascularization ,PHARMACODYNAMICS ,METABOLISM - Abstract
Background: The new modalities for treating patients with non-muscle invasive bladder cancer (NMIBC) for whom BCG (Bacillus Calmette-Guerin) has failed or is contraindicated are recently increasing due to the development of new drugs. Although agents like mitomycin C and BCG are routinely used, there is a need for more potent and/or less-toxic agents. In this scenario, a new perspective is represented by P-MAPA (Protein Aggregate Magnesium-Ammonium Phospholinoleate-Palmitoleate Anhydride), developed by Farmabrasilis (non-profit research network). This study detailed and characterized the mechanisms of action of P-MAPA based on activation of mediators of Toll-like Receptors (TLRs) 2 and 4 signaling pathways and p53 in regulating angiogenesis and apoptosis in an animal model of NMIBC, as well as, compared these mechanisms with BCG treatment.Results: Our results demonstrated the activation of the immune system by BCG (MyD88-dependent pathway) resulted in increased inflammatory cytokines. However, P-MAPA intravesical immunotherapy led to distinct activation of TLRs 2 and 4-mediated innate immune system, resulting in increased interferons signaling pathway (TRIF-dependent pathway), which was more effective in the NMIBC treatment. Interferon signaling pathway activation induced by P-MAPA led to increase of iNOS protein levels, resulting in apoptosis and histopathological recovery. Additionally, P-MAPA immunotherapy increased wild-type p53 protein levels. The increased wild-type p53 protein levels were fundamental to NO-induced apoptosis and the up-regulation of BAX. Furthermore, interferon signaling pathway induction and increased p53 protein levels by P-MAPA led to important antitumor effects, not only suppressing abnormal cell proliferation, but also by preventing continuous expansion of tumor mass through suppression of angiogenesis, which was characterized by decreased VEGF and increased endostatin protein levels.Conclusions: Thus, P-MAPA immunotherapy could be considered an important therapeutic strategy for NMIBC, as well as, opens a new perspective for treatment of patients that are refractory or resistant to BCG intravesical therapy. [ABSTRACT FROM AUTHOR]- Published
- 2016
- Full Text
- View/download PDF
39. Alcoholism and alcohol abstinence: N-acetylcysteine to improve energy expenditure, myocardial oxidative stress, and energy metabolism in alcoholic heart disease
- Author
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Seiva, Fábio Rodrigues Ferreira, primary, Amauchi, Juliana Fujihara, additional, Rocha, Katiucha Karolina Ribeiro, additional, Ebaid, Geovana Xavier, additional, Souza, Gisele, additional, Fernandes, Ana Angélica Henrique, additional, Cataneo, Ana Catarina, additional, and Novelli, Ethel Lourenzi Barbosa, additional
- Published
- 2009
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40. Melatonin Promotes Uterine and Placental Health: Potential Molecular Mechanisms.
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de Almeida Chuffa, Luiz Gustavo, Lupi, Luiz Antonio, Cucielo, Maira Smaniotto, Silveira, Henrique Spaulonci, Reiter, Russel J., and Seiva, Fábio Rodrigues Ferreira
- Subjects
MELATONIN ,EMBRYO implantation ,LUTEAL phase ,MISCARRIAGE ,MENSTRUAL cycle ,SOMATOTROPIN ,PREECLAMPSIA ,GROWTH factors - Abstract
The development of the endometrium is a cyclic event tightly regulated by hormones and growth factors to coordinate the menstrual cycle while promoting a suitable microenvironment for embryo implantation during the "receptivity window". Many women experience uterine failures that hamper the success of conception, such as endometrium thickness, endometriosis, luteal phase defects, endometrial polyps, adenomyosis, viral infection, and even endometrial cancer; most of these disturbances involve changes in endocrine components or cell damage. The emerging evidence has proven that circadian rhythm deregulation followed by low circulating melatonin is associated with low implantation rates and difficulties to maintain pregnancy. Given that melatonin is a circadian-regulating hormone also involved in the maintenance of uterine homeostasis through regulation of numerous pathways associated with uterine receptivity and gestation, the success of female reproduction may be dependent on the levels and activity of uterine and placental melatonin. Based on the fact that irregular production of maternal and placental melatonin is related to recurrent spontaneous abortion and maternal/fetal disturbances, melatonin replacement may offer an excellent opportunity to restore normal physiological function of the affected tissues. By alleviating oxidative damage in the placenta, melatonin favors nutrient transfer and improves vascular dynamics at the uterine–placental interface. This review focuses on the main in vivo and in vitro functions of melatonin on uterine physiological processes, such as decidualization and implantation, and also on the feto-maternal tissues, and reviews how exogenous melatonin functions from a mechanistic standpoint to preserve the organ health. New insights on the potential signaling pathways whereby melatonin resists preeclampsia and endometriosis are further emphasized in this review. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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- View/download PDF
41. Potenciais estratégias terapêuticas para o câncer de bexiga urinária não-músculo invasivo baseadas na associação da imunoterapia intravesical com P-MAPA e administrações sistêmicas de cisplatina e doxorrubicina
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Dias, Queila Cristina, 1985, Fávaro, Wagner José, 1980, Pimentel, Edson Rosa, Seiva, Fábio Rodrigues Ferreira, Universidade Estadual de Campinas. Instituto de Biologia, Programa de Pós-Graduação em Biologia Celular e Estrutural, and UNIVERSIDADE ESTADUAL DE CAMPINAS
- Subjects
P-Mapa ,Doxorrubicina ,Bladder neoplasms ,Doxorubicin ,Antineoplastic agents - Therapeutic use ,Imunoterapia ,Agentes antineoplásicos - Uso terapêutico ,Immunotherapy ,Neoplasias da bexiga ,P-Map - Abstract
Orientador: Wagner José Fávaro Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Biologia Resumo: A baixa eficácia dos tratamentos e as altas taxas de recorrência do câncer de bexiga urinária não-músculo invasivo (CBNMI) podem estar relacionadas aos baixos efeitos dessas terapias sobre os mecanismos de proliferação celular e angiogênese. Atualmente, a terapia mais eficaz para o CBNMI é a imunoterapia com BCG (Bacilo Calmette-Guerin) associada com a ressecção transuretral (RTU). Entretanto, a utilização do BCG está associada à efeitos colaterais de intensidades variadas, o que contribui para a interrupção do tratamento, além de apresentar alto índice de recorrência tumoral. A incidência de efeitos adversos locais e sistêmicos é significativamente reduzida com a utilização de agentes quimioterápicos, mas, no entanto, a resposta à quimioterapia intravesical é incompleta e a recorrência tumoral também é elevada. Diante deste cenário destaca-se o imunomodulador P-MAPA, que por sua grande versatilidade e mínima citoxicidade, abre uma nova perspectiva para o combate de alguns tipos de cânceres, incluindo o CBNMI. A administração sistêmica de agentes quimioterápicos, como cisplatina e doxorrubicina, associados à imunoterapia intravesical pode constituir uma promissora alternativa terapêutica na falha ou recidiva do BCG. Assim, os objetivos gerais deste estudo foram caracterizar e comparar os efeitos histopatológicos e moleculares da imunoterapia intravesical com P-MAPA associada às administrações sistêmicas dos quimioterápicos (cisplatina e doxorrubicina) no tratamento do CBNMI induzido em ratos, bem como estabelecer os efeitos destas estratégias terapêuticas envolvendo os fatores envolvidos nos mecanismos de proliferação celular e angiogênese.Para a indução do CBNMI, foram utilizadas 60 ratas da variedade Fischer 344.Os animais foram previamente anestesiadas e receberam quatro doses (1,5mg/kg) do carcinógeno N-metil-N-nitrosoureia (MNU), intravesicalmente, durante 8 semanas. Outros dez animais (Grupo 1: Controle) receberam 0,2 mL de solução salina fisiológica (0,9%) durante 6 semanas. Duas semanas após a última dose de MNU, os animais foram subdivididos em 6 grupos: Grupo 2: MNU (Câncer): recebeu o mesmo tratamento que o grupo Grupo 1; Grupo 3: MNU+P-MAPA: recebeu uma dose intravesical de 5 mg/Kg de P-MAPA por 6 semanas consecutivas; Grupo 4: MNU+Cisplatina: recebeu uma dose intraperitoneal de 0,25 mg/Kg de cisplatina uma vez por semana durante 4 semanas consecutivas; Grupo 5: MNU+Doxorrubicina:recebeu uma dose intraperitoneal de 3 mg/Kg de doxorrubicina a cada 15 dias, totalizando 4 doses; Grupo 6: MNU+P-MAPA+Cisplatina: recebeu tratamento simultâneo com P-MAPA e cisplatina nas mesmas concentrações e vias de administrações que os grupos 3 e 4; Grupo 7: MNU+P-MAPA+Doxorrubicina: recebeu tratamento simultâneo com P-MAPA e doxorrubicina nas mesmas concentrações e vias de administrações que os grupos 3 e 5. Após os períodos de tratamento, as bexigas urinárias foram coletadas e submetidas às análises histopatológicas e de Western Blotting.Os resultados demonstraram alta taxa de regressão tumoral (80%) nos animais tratados com a associação cisplatina+P-MAPA. A associação entre a imunoterapia intravesical com P-MAPA e agentes quimioterapêuticos promoveu redução na atividade da via PI3K/ Akt, estimulada via PTEN, culminando com níveis reduzidos de NF-kB, e consequente diminuição da proliferação de células tumorais uroteliais. Os menores níveis protéicos de VEGF também foram verificados nos grupos submetidos à associação de terapias, evidenciando diminuição do processo de angiogênese. Assim, pode-se concluir que a associação entre a imunoterapia intravesical com P-MAPA aos agentes quimioterapêuticos, especialmente cisplatina, foi eficaz, bem tolerada e não mostrou sinais aparentes de antagonismo entre os fármacos. Considerando os dados em conjunto, esse trabalho aponta a associação do uso intravesical de P-MAPA e cisplatina sistêmica como alternativa terapêutica promissora para o CBNMI Abstract: The low effectiveness of treatments and high rates of recurrence of urinary bladder cancer non-muscle invasive (CBNMI) may be related to low effects of these therapies on the mechanisms of cell proliferation and angiogenesis. Currently, the most effective therapy for the CBNMI is immunotherapy with BCG (Bacillus Calmette-Guerin) associated with Transurethral resection (RTU). However, the use of BCG is associated with side effects of varying intensities, which contributes to stopping treatment, in addition to presenting high rate of tumor recurrence. The incidence of local and systemic adverse effects is significantly reduced with the use of chemotherapy agents, but, however, the answer to intravesical chemotherapy is incomplete and tumor recurrence is also high. In this scenario the immunomodulator P-MAPA, which by its great versatility and cytotoxic minimum, opens a new perspective for the combat of some types of cancers, including the CBNMI. The systemic administration of chemotherapeutic agents, such as cisplatin and doxorubicin, associated with intravesical immunotherapy may be a promising therapeutic alternative in failure or relapse of BCG. Thus, the overall objectives of this study were to characterize and compare the histopathological and molecular effects of intravesical immunotherapy with P-MAPA associated with systemic administration of chemotherapy (cisplatin and doxorubicin) in the treatment of CBNMI induced in rats, as well as establish the effects of these therapeutic strategies involving the factors involved in the mechanisms of cell proliferation and angiogenesis. For the induction of CBNMI were used 60 rats of the Fischer 344 variety. The animals were anaesthetised beforehand and received four doses (1.5 mgkg) the carcinogen N-methyl-N-nitrosoureia (MNU), intravesicalmente, for 8 weeks. Ten other animals (Group 1: control) received 0.2 mL of physiological saline (0.9%) during 6 weeks. Two weeks after the last dose of MNU, the animals were divided into 6 groups: Group 2: MNU (cancer): received the same treatment as the Group 1; Group 3: MNU+P-MAPA: received a intravesical dose of 5 mg/Kg of P-MAPA for 6 consecutive weeks; Group 4: MNU+Cisplatin: received an intraperitoneal dose of 0.25 mg/Kg of cisplatin once a week for 4 consecutive weeks; Group 5: MNU+Doxorrubicin: received an intraperitoneal dose of 3 mg/Kg of doxorubicin every 15 days, for a total of 4 doses; Group 6: MNU+Cisplatin+P-MAPA: received simultaneous treatment with P-MAPA and cisplatin in the same concentrations and routes of administrations that groups 3 and 4; Group 7: MNU+Doxorrubicin+P-MAPA: received simultaneous treatment with P-MAPA and doxorubicin in the same concentrations and routes of administrations that groups 3 and 5. After periods of treatment, urinary bladders were collected and subjected to Histopathological Analysis and Western Blotting. The results showed high rate of tumor regression (80%) in animals treated with the cisplatin+P-MAPA association. The association between intravesical immunotherapy with P-MAPA and chemotherapeutic agents promoted reduction of activity via PI3K/ Akt, PTEN pathway stimulated, culminating with reduced levels of NF-kB, and the consequent decrease in the proliferation of urotellial tumor cells. The lowest levels of VEGF protein were also recorded on groups undergoing therapy Association, reducing the process of angiogenesis. Thus, we can conclude that the association between intravesical immunotherapy with P-MAPA to chemotherapeutic agents, especially cisplatin was effective, well tolerated and showed no apparent signs of antagonism between the drugs. Considering the data together, this work points the Association of intravesical of P-MAPA and cisplatin therapy as an alternative promising systemic to the CBNMI Agência de fomento: Agência de fomento: Mestrado Anatomia Mestra em Biologia Celular e Estrutural
- Published
- 2021
- Full Text
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42. COVID-19: The question of genetic diversity and therapeutic intervention approaches.
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Figueiredo DLA, Ximenez JPB, Seiva FRF, Panis C, Bezerra RDS, Ferrasa A, Cecchini AL, Medeiros AI, Almeida AMF, Ramão A, Boldt ABW, Moya CF, Chin CM, Paula D, Rech D, Gradia DF, Malheiros D, Venturini D, Tavares ER, Carraro E, Ribeiro EMSF, Pereira EM, Tuon FF, Follador FAC, Fernandes GSA, Volpato H, Cólus IMS, Oliveira JC, Rodrigues JHDS, Santos JLD, Visentainer JEL, Brandi JC, Serpeloni JM, Bonini JS, Oliveira KB, Fiorentin K, Lucio LC, Faccin-Galhardi LC, Ferreto LED, Lioni LMY, Consolaro MEL, Vicari MR, Arbex MA, Pileggi M, Watanabe MAE, Costa MAR, Giannini MJSM, Amarante MK, Khalil NM, Lima Neto QA, Herai RH, Guembarovski RL, Shinsato RN, Mainardes RM, Giuliatti S, Yamada-Ogatta SF, Gerber VKQ, Pavanelli WR, Silva WCD, Petzl-Erler ML, Valente V, Soares CP, Cavalli LR, and Silva WA Jr
- Abstract
Coronavirus disease 2019 (COVID-19), caused by the Severe Acute Respiratory Syndrome Coronavirus type 2 (SARS-CoV-2), is the largest pandemic in modern history with very high infection rates and considerable mortality. The disease, which emerged in China's Wuhan province, had its first reported case on December 29, 2019, and spread rapidly worldwide. On March 11, 2020, the World Health Organization (WHO) declared the COVID-19 outbreak a pandemic and global health emergency. Since the outbreak, efforts to develop COVID-19 vaccines, engineer new drugs, and evaluate existing ones for drug repurposing have been intensively undertaken to find ways to control this pandemic. COVID-19 therapeutic strategies aim to impair molecular pathways involved in the virus entrance and replication or interfere in the patients' overreaction and immunopathology. Moreover, nanotechnology could be an approach to boost the activity of new drugs. Several COVID-19 vaccine candidates have received emergency-use or full authorization in one or more countries, and others are being developed and tested. This review assesses the different strategies currently proposed to control COVID-19 and the issues or limitations imposed on some approaches by the human and viral genetic variability.
- Published
- 2022
- Full Text
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43. Melatonin Promotes Uterine and Placental Health: Potential Molecular Mechanisms.
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Chuffa LGA, Lupi LA, Cucielo MS, Silveira HS, Reiter RJ, and Seiva FRF
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- Circadian Rhythm, Female, Humans, Menstrual Cycle, Pregnancy, Abortion, Habitual metabolism, Abortion, Habitual pathology, Endometriosis metabolism, Endometriosis pathology, Endometrium metabolism, Melatonin metabolism, Placenta metabolism, Placenta pathology, Pre-Eclampsia metabolism, Pre-Eclampsia pathology
- Abstract
The development of the endometrium is a cyclic event tightly regulated by hormones and growth factors to coordinate the menstrual cycle while promoting a suitable microenvironment for embryo implantation during the "receptivity window". Many women experience uterine failures that hamper the success of conception, such as endometrium thickness, endometriosis, luteal phase defects, endometrial polyps, adenomyosis, viral infection, and even endometrial cancer; most of these disturbances involve changes in endocrine components or cell damage. The emerging evidence has proven that circadian rhythm deregulation followed by low circulating melatonin is associated with low implantation rates and difficulties to maintain pregnancy. Given that melatonin is a circadian-regulating hormone also involved in the maintenance of uterine homeostasis through regulation of numerous pathways associated with uterine receptivity and gestation, the success of female reproduction may be dependent on the levels and activity of uterine and placental melatonin. Based on the fact that irregular production of maternal and placental melatonin is related to recurrent spontaneous abortion and maternal/fetal disturbances, melatonin replacement may offer an excellent opportunity to restore normal physiological function of the affected tissues. By alleviating oxidative damage in the placenta, melatonin favors nutrient transfer and improves vascular dynamics at the uterine-placental interface. This review focuses on the main in vivo and in vitro functions of melatonin on uterine physiological processes, such as decidualization and implantation, and also on the feto - maternal tissues, and reviews how exogenous melatonin functions from a mechanistic standpoint to preserve the organ health. New insights on the potential signaling pathways whereby melatonin resists preeclampsia and endometriosis are further emphasized in this review., Competing Interests: Authors declare no conflict of interest.
- Published
- 2019
- Full Text
- View/download PDF
44. Cardiac energy metabolism and oxidative stress biomarkers in diabetic rat treated with resveratrol.
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Carolo dos Santos K, Pereira Braga C, Octavio Barbanera P, Seiva FR, Fernandes Junior A, and Fernandes AA
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- Animals, Biomarkers metabolism, Blood Glucose, Diabetes Mellitus, Experimental drug therapy, Energy Intake, Fatty Acids, Nonesterified blood, Glutathione metabolism, Male, Rats, Wistar, Resveratrol, Antioxidants therapeutic use, Diabetes Mellitus, Experimental metabolism, Energy Metabolism, Myocardium metabolism, Oxidative Stress, Stilbenes therapeutic use
- Abstract
Resveratrol (RSV), polyphenol from grape, was studied to evaluate its effects on calorimetric parameters, energy metabolism, and antioxidants in the myocardium of diabetic rats. The animals were randomly divided into four groups (n = 8): C (control group): normal rats; C-RSV: normal rats receiving RSV; DM: diabetic rats; and DM-RSV: diabetics rats receiving RSV. Type 1 diabetes mellitus was induced with administration of streptozotocin (STZ; 60 mg(-1) body weight, single dose, i.p.). After 48 hours of STZ administration, the animals received RSV (1.0 mg/kg/day) for gavage for 30 days. Food, water, and energy intake were higher in the DM group, while administration of RSV caused decreases (p<0.05) in these parameters. The glycemia decreased and higher final body weight increased in DM-RSV when compared with the DM group. The diabetic rats showed higher serum-free fatty acid, which was normalized with RSV. Oxygen consumption (VO2) and carbon dioxide production (VCO2) decreased (p<0.05) in the DM group. This was accompanied by reductions in RQ. The C-RSV group showed higher VO2 and VCO2 values. Pyruvate dehydrogenase activity was lower in the DM group and normalizes with RSV. The DM group exhibited higher myocardial β-hydroxyacyl coenzyme-A dehydrogenase and citrate synthase activity, and RSV decreased the activity of these enzymes. The DM group had higher cardiac lactate dehydrogenase compared to the DM-RSV group. Myocardial protein carbonyl was increased in the DM group. RSV increased reduced glutathione in the cardiac tissue of diabetic animals. The glutathione reductase activity was higher in the DM-RSV group compared to the DM group. In conclusion, diabetes is accompanied by cardiac energy metabolism dysfunction and change in the biomarkers of oxidative stress. The cardioprotective effect may be mediated through RVS's ability to normalize free fatty acid oxidation, enhance utilization glucose, and control the biomarkers' level of oxidative stress under diabetic conditions.
- Published
- 2014
- Full Text
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45. Combined effects of age and diet-induced obesity on biochemical parameters and cardiac energy metabolism in rats.
- Author
-
Chuffa LG and Seiva FR
- Subjects
- Animals, Male, Rats, Rats, Wistar, Aging, Body Size, Diet, High-Fat adverse effects, Energy Metabolism, Heart physiopathology, Obesity etiology, Obesity physiopathology
- Abstract
Obesity is often associated with decreased fat oxidation and aging is a well-recognized risk factor for cardiovascular disease. This study investigated calorimetric and morphometric parameters, as well as the glucose levels, lipid profile and cardiac energy metabolism in young and old, controls and obese rats. The animals were divided into four groups: Group I (GI): young rats fed normal diet for 75 days; Group II (GII): young rats fed hypercaloric diet (HD) for 75 days; Group III (GIII): old rats fed normal diet for 510 days; and Group IV (G IV): old rats fed HD for 510 days. The following analyses were performed: calorimetric, glucose and lipid concentrations, atherogenic index (AI), total antioxidant substances (TAS), fat depots, cardiac lipid hydroperoxide (LH) and cardiac lactate dehydrogenase (LDH), citrate synthase (CS), phosphofructokinase (PFK) and pyruvate dehydrogenase (PDH) activities. Older animals were heavier than young and the hypercaloric animals were heavier than controls. Animals from GIV had lower fat oxidation than GIII, which in turn, had higher fat oxidation than GI. Total cholesterol, LDL-C and all fat depots were higher in the GII, as compared to GI. The GIV rats had higher VLDL, retroperitoneal fat, serum lipids and cardiac glycogen levels than GII. Furthermore, GIV rats had higher fat depots, triacylglycerol, total cholesterol and VLDL than GIII. Animals from GII and -IV showed higher LH and AI than age-matched controls. Older hypercaloric rats also had higher TAS than older control rats, which also had lower LH and TAS than younger control rats. Aged animals had increased CS and LDH and decreased PFK and PDH activities. Additionally, GIV rats exhibited an increase in PDH activity, compared to GIII. We conclude that the consumption of HD coupled with aging leads to impaired basal and cardiac metabolism.
- Published
- 2013
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