40 results on '"Guimarães, Elisalva Teixeira"'
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2. Potent immunosuppressive activity of a phosphodiesterase-4 inhibitor N-acylhydrazone in models of lipopolysaccharide-induced shock and delayed-type hypersensitivity reaction
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Guimarães, Elisalva Teixeira, dos Santos, Tatiana Barbosa, Silva, Dahara Keyse Carvalho, Meira, Cássio Santana, Moreira, Diogo Rodrigo Magalhães, da Silva, Tiago Fernandes, Salmon, Didier, Barreiro, Eliezer J., and Soares, Milena Botelho Pereira
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- 2018
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3. Betulinic acid derivative BA5, a dual NF-kB/calcineurin inhibitor, alleviates experimental shock and delayed hypersensitivity
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Meira, Cássio Santana, Espírito Santo, Renan Fernandes do, dos Santos, Tatiana Barbosa, Orge, Iasmim Diniz, Silva, Dahara Keyse Carvalho, Guimarães, Elisalva Teixeira, Aragão França, Luciana Souza de, Barbosa-Filho, José Maria, Moreira, Diogo Rodrigo Magalhães, and Soares, Milena Botelho Pereira
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- 2017
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4. Antiparasitic evaluation of betulinic acid derivatives reveals effective and selective anti-Trypanosoma cruzi inhibitors
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Meira, Cássio Santana, Barbosa-Filho, José Maria, Lanfredi-Rangel, Adriana, Guimarães, Elisalva Teixeira, Moreira, Diogo Rodrigo Magalhães, and Soares, Milena Botelho Pereira
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- 2016
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5. Determination of phenolic bioactive compounds and evaluation of the antioxidant and hemolytic activities in the methanolic extracts of Tradescantia zebrina
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Da Silva, Vagner Cardoso, primary, Magalhães, Bárbara Elizabeth Alves de, additional, Magalhães, Tatiana Barbosa dos Santos, additional, Guimarães, Elisalva Teixeira, additional, Guedes, Alessandra da Silva, additional, Mota, Milleno Dantas, additional, Dos Santos, Walter Nei Lopes, additional, Cerqueira, Bruno Antonio Veloso, additional, and Santos Júnior, Aníbal de Freitas, additional
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- 2023
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6. In vitro and in vivo antiparasitic activity of Physalis angulata L. concentrated ethanolic extract against Trypanosoma cruzi
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Meira, Cássio Santana, Guimarães, Elisalva Teixeira, dos Santos, Jamyle Andrade Ferreira, Moreira, Diogo Rodrigo Magalhães, Nogueira, Renata Campos, Tomassini, Therezinha Coelho Barbosa, Ribeiro, Ivone Maria, de Souza, Claudia Valeria Campos, Ribeiro dos Santos, Ricardo, and Soares, Milena Botelho Pereira
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- 2015
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7. Design, synthesis and structure–activity relationship of phthalimides endowed with dual antiproliferative and immunomodulatory activities
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Cardoso, Marcos Veríssimo de Oliveira, Moreira, Diogo Rodrigo Magalhães, Filho, Gevanio Bezerra Oliveira, Cavalcanti, Suellen Melo Tiburcio, Coelho, Lucas Cunha Duarte, Espíndola, José Wanderlan Pontes, Gonzalez, Laura Rubio, Rabello, Marcelo Montenegro, Hernandes, Marcelo Zaldini, Ferreira, Paulo Michel Pinheiro, Pessoa, Cláudia, Alberto de Simone, Carlos, Guimarães, Elisalva Teixeira, Soares, Milena Botelho Pereira, and Leite, Ana Cristina Lima
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- 2015
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8. Potent anti-inflammatory activity of betulinic acid treatment in a model of lethal endotoxemia
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Oliveira Costa, José Fernando, Barbosa-Filho, José Maria, de Azevedo Maia, Gabriela Lemos, Guimarães, Elisalva Teixeira, Meira, Cássio Santana, Ribeiro-dos-Santos, Ricardo, Pontes de Carvalho, Lain Carlos, and Soares, Milena Botelho Pereira
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- 2014
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9. Optimization of anti-Trypanosoma cruzi oxadiazoles leads to identification of compounds with efficacy in infected mice
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dos Santos Filho, José Maurício, Moreira, Diogo Rodrigo M., de Simone, Carlos Alberto, Ferreira, Rafaela Salgado, McKerrow, James H., Meira, Cássio Santana, Guimarães, Elisalva Teixeira, and Soares, Milena Botelho Pereira
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- 2012
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10. Reduction of galectin-3 expression and liver fibrosis after cell therapy in a mouse model of cirrhosis
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de Oliveira, Sheilla Andrade, de Freitas Souza, Bruno Solano, Barreto, Elton Pereira Sá, Kaneto, Carla Martins, Neto, Hélio Almeida, Azevedo, Carine Machado, Guimarães, Elisalva Teixeira, de Freitas, Luiz Antonio Rodrigues, Ribeiro-Dos-Santos, Ricardo, and Soares, Milena Botelho Pereira
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- 2012
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11. Therapeutic Applications of Physalins: Powerful Natural Weapons
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Meira, Cássio Santana, primary, Soares, José Waldson Capinan, additional, dos Reis, Bruna Padilha Zurita Claro, additional, Pacheco, Luciano Vasconcellos, additional, Santos, Ivanilson Pimenta, additional, Silva, Dahara Keyse Carvalho, additional, de Lacerda, Julia Costa, additional, Daltro, Sérgio Ricardo Teixeira, additional, Guimarães, Elisalva Teixeira, additional, and Soares, Milena Botelho Pereira, additional
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- 2022
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12. Mesenchymal and embryonic characteristics of stem cells obtained from mouse dental pulp
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Guimarães, Elisalva Teixeira, Cruz, Gabriela Silva, de Jesus, Alan Araújo, Lacerda de Carvalho, Acácia Fernandes, Rogatto, Silvia Regina, Pereira, Lygia da Veiga, Ribeiro-dos-Santos, Ricardo, and Soares, Milena Botelho Pereira
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- 2011
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13. A Betulinic Acid Derivative, BA5, Induces G0/G1 Cell Arrest, Apoptosis Like-Death, and Morphological Alterations in Leishmania sp
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Magalhães, Tatiana Barbosa dos Santos, primary, Silva, Dahara Keyse Carvalho, additional, Teixeira, Jessica da Silva, additional, De Lima, Juliana Dizaira Teles, additional, Barbosa-Filho, José Maria, additional, Moreira, Diogo Rodrigo Magalhães, additional, Guimarães, Elisalva Teixeira, additional, and Soares, Milena Botelho Pereira, additional
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- 2022
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14. Aspectos botánicos, fitoquímicos y citotóxicos de las especies vegetales de las Moraceae, Asteraceae, Theaceae, Malvaceae, Junglandaceae, Celastraceae e Illiciaceae: revisión de la literatura
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Santana, Rebeca Oliveira de, Ribeiro, Erika Maria de Oliveira, Pacheco, Luciano Vasconcellos, Guimarães, Elisalva Teixeira, Santos Junior, Genario Oliveira, Vale, Ademir Evangelista do, and Ferreira Filho, Raymundo Paraná
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Phytochemistry ,Citotoxicidade ,Botânica ,Fitoquímica ,Cytotoxicity ,Medicinal plants ,Plantas medicinales ,Botánica ,Botany ,Citotoxicidad ,Plantas medicinais - Abstract
This integrative review aims to present botanical, phytochemical and cytotoxic information about plant species commonly used. As a strategy to search for articles, the databases of Latin American and Caribbean Literature in Health Sciences (LILACS), Scientific Electronic Library Online (SCIELO), Science Direct, and Google Scholar were used. selected works in Portuguese, English and Spanish. After reading the abstract, studies that met the requirements of the topic addressed were included. Works that, after reading in full, did not directly address the proposed theme were excluded. Records of the use of medicinal plants dating back to 1500 BC were observed. Associated with this, the "Green Pharmacopoeia", from 1926, was the first official Brazilian document with botanical descriptions of some medicinal plants. Concerning the families Moraceae, Asteraceae, Theaceae, Malvaceae, Junglandaceae, Celastraceae and Illiciaceae, the most abundant worldwide was the Asteraceae with about 1,600 genera and 23,000 species, while Theaceae, with about 10 genera and 195 species, was the least found . It was observed that the cytotoxicity assays, in vitro, both by direct and indirect methods, are configured as a tool to assess the toxicity of medicinal plants and some biological activities. In this context, in vitro cytotoxicity assays are a preliminary tool to assess the toxicity and biological activity of a medicinal plant. Esta revisión integradora tiene como objetivo presentar información botánica, fitoquímica y citotóxica sobre las especies de plantas de uso común. Como estrategia de búsqueda de artículos se utilizaron las bases de datos de Literatura Latinoamericana y Caribeña en Ciencias de la Salud (LILACS), Scientific Electronic Library Online (SCIELO), Science Direct y Google Scholar, trabajos seleccionados en portugués, inglés y español. Luego de la lectura del resumen, se incluyeron los estudios que cumplieron con los requisitos del tema abordado. Se excluyeron los trabajos que, después de leerlos íntegramente, no abordaran directamente el tema propuesto. Se observaron registros de uso de plantas medicinales que datan del 1500 aC Asociado a esto, la "Farmacopea Verde", de 1926, fue el primer documento oficial brasileño con descripciones botánicas de algunas plantas medicinales. En cuanto a las familias Moraceae, Asteraceae, Theaceae, Malvaceae, Junglandaceae, Celastraceae e Illiciaceae, la más abundante a nivel mundial fue la Asteraceae con cerca de 1.600 géneros y 23.000 especies, mientras que Theaceae, con cerca de 10 géneros y 195 especies, fue la menos encontrada. Se observó que los ensayos de citotoxicidad, in vitro, tanto por métodos directos como indirectos, se configuran como una herramienta para evaluar la toxicidad de plantas medicinales y algunas actividades biológicas. En este contexto, los ensayos de citotoxicidad in vitro son una herramienta preliminar para evaluar la toxicidad y la actividad biológica de una planta medicinal. A presente revisão integrativa tem por objetivo apresentar informações botânicas, fitoquímicas e citotóxicas sobre espécies vegetais usadas popularmente. Como estratégia para busca de artigos, utilizaram-se as bases de dados de Literatura Latino-americana e do Caribe em Ciências da Saúde (LILACS), a Scientific Electronic Library Online (SCIELO), a Science Direct, e o Google Scholar, e, foram selecionados trabalhos nos idiomas português, inglês e espanhol. Após a leitura do resumo, foram incluídos estudos que atendiam aos requisitos do tema abordado. Foram excluídos os trabalhos que, após leitura na íntegra não abordaram diretamente a temática proposta. Observaram-se registros do uso de plantas medicinais datados desde 1500 A.C, associado a isso, a "Farmacopeia Verde", de 1926, foi o primeiro documento oficial brasileiro com descrições botânicas de algumas plantas medicinais. Referente às famílias Moraceae, Asteraceae, Theaceae, Malvaceae, Junglandaceae, Celastraceae e Illiciaceae, a mais abundante mundialmente foi a Asteraceae com cerca de 1.600 gêneros e 23.000 espécies, enquanto a Theaceae, com cerca de 10 gêneros e 195 espécies, foi a menos encontrada. Observou-se que os ensaios de citotoxicidade, in vitro, tanto por métodos direto quanto indiretos, configuram-se como uma ferramenta para avaliar toxicidade das plantas medicinais e algumas atividades biológicas. Nesse contexto, os ensaios de citotoxicidade in vitro é uma ferramenta preliminar para avaliar a toxicidade e atividade biológica de uma planta medicinal.
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- 2021
15. Aspectos botânicos, fitoquímicos e citotóxicos de espécies vegetais pertencentes às famílias Moraceae, Asteraceae, Theaceae, Malvaceae, Junglandaceae, Celastraceae e Illiciaceae: uma revisão da literatura
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Santana, Rebeca Oliveira de, primary, Ribeiro, Erika Maria de Oliveira, additional, Pacheco, Luciano Vasconcellos, additional, Guimarães, Elisalva Teixeira, additional, Santos Junior, Genario Oliveira, additional, Vale, Ademir Evangelista do, additional, and Ferreira Filho, Raymundo Paraná, additional
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- 2021
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16. Structural Design, Synthesis and Antioxidant, Antileishmania, Anti-Inflammatory and Anticancer Activities of a Novel Quercetin Acetylated Derivative
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da Silva, Saul Vislei Simões, primary, Barboza, Orlando Maia, additional, Souza, Jéssica Teles, additional, Soares, Érica Novaes, additional, dos Santos, Cleonice Creusa, additional, Pacheco, Luciano Vasconcellos, additional, Santos, Ivanilson Pimenta, additional, Magalhães, Tatiana Barbosa dos Santos, additional, Soares, Milena Botelho Pereira, additional, Guimarães, Elisalva Teixeira, additional, Meira, Cássio Santana, additional, Costa, Silvia Lima, additional, da Silva, Victor Diógenes Amaral, additional, de Santana, Lourenço Luís Botelho, additional, and de Freitas Santos Júnior, Aníbal, additional
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- 2021
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17. Tratamiento de leishmaniasis, limitaciones de la terapéutica actual y la necesidad de nuevas alternativas: Una revisión narrativa
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Santiago, Alexandre Silva, Pita, Samuel Silva da Rocha, and Guimarães, Elisalva Teixeira
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Leishmania ,Mecanismos moleculares de ação farmacológica ,Tratamiento Farmacológico ,Molecular mechanisms of pharmacological action ,Mecanismos moleculares de acción farmacológica ,Neglected Diseases ,Enfermedades desatendidas ,Pharmacological treatment ,Doenças Negligenciadas ,Tratamento Farmacológico - Abstract
Leishmaniasis groups some neglected diseases caused by intracellular protozoa Leishmania. Its main clinical forms are the tegumentary (LT) and Visceral (LV). Currently, the therapy against leishmaniasis is based on the use of five drugs: the pentavalent antimonials, amphotericin B and its liposomal formulation, miltefosine, paromomycin and pentamidine. These compounds present limitations that difficult patient’s adherence to treatment, such as high toxicity and the need for prolonged parenteral administration, in addition to the selection of resistant strains. Thus, employing the literature narrative review, we brought a panorama of the current leishmaniasis treatment, its elucidated action mechanisms, attributed toxicity, adverse effects and administration routes. Aiming to point this, the more updated data available in the literature were brought to facilitate access information on therapeutic options, in addition to new therapeutic alternatives and vaccine perspectives against this neglected disease. Leishmaniasis es un grupo de enfermedades desatendidas causadas por protozoarios intracelulares del género Leishmania. Sus principales formas clínicas son tegumentario (LT) y visceral (LV). Actualmente, la terapéutica contra leishmaniosis es basada en la utilización de cinco fármacos: los antimoniales pentavalentes, la anfotericina B y su formulación liposomal, la miltefosina, la paromomicina y la pentamidina. Estos compuestos presentan limitaciones que dificultan la adherencia del paciente al tratamiento como: la elevada toxicidad y la necesidad de administración prolongada por vía parenteral, así como una posible selección de cepas resistentes. Así, utilizando la revisión narrativa de literatura, se busca aclarar un panorama del tratamiento actual de la leishmaniasis, sus mecanismos de acción elucidados, su toxicidad, sus efectos adversos y vías de administración. Para tanto, se traen los datos más actuales disponibles en la literatura para facilitar el acceso a las informaciones sobre las opciones terapéuticas, y también de las nuevas alternativas terapéuticas y perspectivas de vacunas contra esta enfermedad desatendida. As leishmanioses são um grupo de doenças negligenciadas causadas por protozoários intracelulares do gênero Leishmania. Suas principais formas clínicas são a tegumentar (LT) e a visceral (LV). Atualmente a terapêutica contra a leishmaniose baseia-se na utilização de cinco fármacos: os antimoniais pentavalentes, a anfotericina B e a sua formulação lipossômica, a miltefosina, a paromomicina e a pentamidina. Estes compostos apresentam limitações que dificultam a adesão do paciente ao tratamento como: a elevada toxicidade e a necessidade de administração prolongada por via parenteral, além da possível seleção de cepas resistentes. Assim, utilizando a revisão narrativa de literatura, buscou-se elucidar um panorama do tratamento atual da leishmaniose, seus mecanismos de ação elucidados, sua toxicidade atribuída, seus efeitos adversos e vias de administração. Para tanto, os dados mais atualizados disponíveis na literatura foram trazidos para facilitar o acesso às informações sobre as opções terapêuticas, além das novas alternativas terapêuticas e perspectivas de vacinas contra esta doença negligenciada.
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- 2021
18. Tratamento da leishmaniose, limitações da terapêutica atual e a necessidade de novas alternativas: Uma revisão narrativa
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Santiago, Alexandre Silva, primary, Pita, Samuel Silva da Rocha, additional, and Guimarães, Elisalva Teixeira, additional
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- 2021
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19. Novel ruthenium(iii) complexes with hydroxybenzophenones: experimental and theoretical characterization and in vitro leishmanicidal activity comparing complexes and ligands
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Dias, Júlia Scaff Moreira, primary, Martins, Felipe Terra, additional, de Araújo Neto, João Honorato, additional, Castellano, Eduardo Ernesto, additional, Viana, Rommel Bezerra, additional, Teixeira, Jéssica da Silva, additional, Guimarães, Elisalva Teixeira, additional, Soares, Milena Botelho Pereira, additional, Frazão Barbosa, Marília Imaculada, additional, and Doriguetto, Antônio Carlos, additional
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- 2021
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20. Activity of antimalarial drugs in vitro and in a murine model of cutaneous leishmaniasis
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Rocha, Vinícius Pinto Costa, Nonato, Fabiana Regina, Guimarães, Elisalva Teixeira, Rodrigues de Freitas, Luiz Antônio, and Soares, Milena Botelho Pereira
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- 2013
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21. In Vitro, In Vivo and In Silico Effectiveness of LASSBio-1386, an N-Acyl Hydrazone Derivative Phosphodiesterase-4 Inhibitor, Against Leishmania amazonensis
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Silva, Dahara Keyse Carvalho, primary, Teixeira, Jessicada Silva, additional, Moreira, Diogo Rodrigo Magalhães, additional, da Silva, Tiago Fernandes, additional, Barreiro, Eliezer Jesus de Lacerda, additional, Freitas, Humberto Fonseca de, additional, Pita, Samuel Silva da Rocha, additional, Teles, André Lacerda Braga, additional, Guimarães, Elisalva Teixeira, additional, and Soares, Milena Botelho Pereira, additional
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- 2020
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22. Journal of Medical Microbiology
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Rocha, Vinícius Pinto Costa, Nonato, Fabiana Regina, Guimarães, Elisalva Teixeira, Freitas, Luiz Antônio Rodrigues de, and Soares, Milena Botelho Pereira
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Leishmaniasis, Cutaneous ,Leishmaniasis - Abstract
Texto completo: acesso restrito. p. 1001-1010 Submitted by Edileide Reis (leyde-landy@hotmail.com) on 2014-11-10T11:46:38Z No. of bitstreams: 1 Vinícius Pinto Costa Rocha.pdf: 859888 bytes, checksum: ecd6260a82081c5d0aa3a3b670bf0ba8 (MD5) Approved for entry into archive by Flávia Ferreira (flaviaccf@yahoo.com.br) on 2014-11-11T16:05:31Z (GMT) No. of bitstreams: 1 Vinícius Pinto Costa Rocha.pdf: 859888 bytes, checksum: ecd6260a82081c5d0aa3a3b670bf0ba8 (MD5) Made available in DSpace on 2014-11-11T16:05:31Z (GMT). No. of bitstreams: 1 Vinícius Pinto Costa Rocha.pdf: 859888 bytes, checksum: ecd6260a82081c5d0aa3a3b670bf0ba8 (MD5) Previous issue date: 2013 The currently used treatments for leishmaniasis, a neglected parasitic disease, are associated with several side effects, high cost and resistance of the Leishmania parasites. Here we evaluated in vitro and in vivo the antileishmanial activity of five antimalarial drugs against Leishmania amazonensis. Mefloquine was effective against promastigotes in axenic cultures and showed an IC50 (concentration giving half-maximal inhibition) value of 8.4±0.7 µM. In addition, mefloquine, chloroquine and hydroxychloroquine were active against intracellular amastigotes in macrophage-infected cultures, presenting IC50 values of 1.56±0.19 µM, 0.78±0.08 µM and 0.67±0.12 µM, respectively. The ultrastructural analysis of chloroquine- or mefloquine-treated amastigotes showed an accumulation of multivesicular bodies in the cytoplasm of the parasite, suggesting endocytic pathway impairment, in addition to the formation of myelin-like figures and enlargement of the Golgi cisternae. CBA mice were infected with L. amazonensis in the ear dermis, and treated by oral and/or topical routes with chloroquine and mefloquine. Treatment of L. amazonensis-infected mice with chloroquine by the oral route reduced lesion size, which was associated with a decrease in the number of parasites in the ear, as well as the parasite burden in the draining lymph nodes. In contrast, mefloquine administration by both routes decreased the lesion size in infected mice without causing a reduction in parasite burden. Our results revealed a promising antileishmanial effect of chloroquine and suggest its use in cutaneous leishmaniasis treatment.
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- 2013
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23. CAPÍTULO 56 - Terapia com Células–tronco
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Penha, Euler Moraes, Soares, Milena Botelho Pereira, and Guimarães, Elisalva Teixeira
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- 2012
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24. Cytotherapy
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Oliveira, Sheilla Andrade de, Souza, Bruno Solano de Freitas, Barreto, Elton Pereira Sá, Kaneto, Carla Martins, Almeida Neto, Hélio, Azevedo, Carine Machado, Guimarães, Elisalva Teixeira, Freitas, Luiz Antonio Rodrigues de, Santos, Ricardo Ribeiro dos, and Soares, Milena Botelho Pereira
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mice ,stem cells ,galectin-3 ,carbon tetrachloride ,hepatic cirrhosis - Abstract
Texto completo: acesso restrito. p. 339–349 Submitted by Edileide Reis (leyde-landy@hotmail.com) on 2014-08-19T15:06:24Z No. of bitstreams: 1 Antonio Rodrigues de Freitas.pdf: 617438 bytes, checksum: cf6db99b23516a431130f0307e2e0657 (MD5) Approved for entry into archive by Delba Rosa (delba@ufba.br) on 2014-10-09T15:43:27Z (GMT) No. of bitstreams: 1 Antonio Rodrigues de Freitas.pdf: 617438 bytes, checksum: cf6db99b23516a431130f0307e2e0657 (MD5) Made available in DSpace on 2014-10-09T15:43:28Z (GMT). No. of bitstreams: 1 Antonio Rodrigues de Freitas.pdf: 617438 bytes, checksum: cf6db99b23516a431130f0307e2e0657 (MD5) Previous issue date: 2012 Background aims Cirrhosis, end-stage liver disease, is caused by different mechanisms of injury, associated with persistent inflammation. Galectin-3 is an important regulator of fibrosis that links chronic inflammation to fibrogenesis. We investigated the role of bone marrow cell (BMC) transplantation in chronic inflammation and hepatic fibrosis. Methods Liver cirrhosis was induced by administration of carbon tetrachloride and ethanol to wild-type C57BL/6 or bone marrow chimeric mice. Bone marrow chimeras were generated by lethal irradiation and transplantation with BMC obtained from green fluorescent protein (GFP+ )donors. Wild-type cirrhotic mice were transplanted with BMC without irradiation. Livers from chimeras and cirrhotic transplanted mice were obtained for evaluation of inflammation, fibrosis and regulatory factors [galectin-3, matrix metallopeptidase (MMP)-9, tissue inhibitor of metalloproteinase (TIMP)-1 and transforming growth factor (TGF)-β]. Results The development of cirrhosis was associated with increased expression of galectin-3 by F4/80+ cells and intense migration of BMC to the liver. Furthermore, when transplanted after the establishment of cirrhosis, BMC also migrated to the liver and localized within the fibrous septa. Two months after BMC therapy, cirrhotic mice had a significant reduction in liver fibrosis and expression of type I collagen. We did not find any difference in levels of TGF-β, TIMP-1 and MMP-9 between saline and BMC groups. However, the numbers of inflammatory cells, phagocytes and galectin-3+ cells were markedly lower in the livers of cirrhotic mice treated with BMC. Conclusions Our results demonstrate an important role for BMC in the regulation of liver fibrosis and that transplantation of BMC can accelerate fibrosis regression through modulatory mechanisms.
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- 2012
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25. Collection and culture of stem cells derived from dental pulp of deciduous teeth: technique and clinical case report
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Jesus,Alan Araujo de, Soares,Milena Botelho Pereira, Soares,Ana Prates, Nogueira,Renata Campos, Guimarães,Elisalva Teixeira, Araújo,Telma Martins de, and Santos,Ricardo Ribeiro dos
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Técnicas de cultura de células ,Tissue therapy ,Dentes natais ,Deciduous teeth ,Stem cells ,Células-tronco ,Terapia tecidual ,Cell culture techniques - Abstract
INTRODUÇÃO: as células-tronco (CT) possuem capacidade de induzir a regeneração tecidual e, portanto, apresentam um potencial terapêutico. Assim como a medula óssea e o cordão umbilical, a polpa dentária é uma das fontes disponíveis de CT. O seu fácil acesso e o fato de os dentes decíduos não serem órgãos vitais, que normalmente são descartados após a esfoliação, provêm um atrativo para testes de segurança e viabilidade terapêutica dessas células. OBJETIVOS: descrever a coleta, o isolamento e o cultivo de CT obtidas da polpa de dentes decíduos, assim como a sua caracterização por meio de citometria de fluxo e da indução da diferenciação em linhagens osteogênica e adipogênica. MÉTODOS: as CT foram obtidas de forma relativamente simples e apresentaram boa capacidade proliferativa, mesmo a partir de pouca quantidade de tecido pulpar. RESULTADOS: a análise por citometria de fluxo confirmou as características de CT mesenquimais, com baixos níveis de expressão dos antígenos CD34 e CD45, que são marcadores de células hematopoiéticas, e altos níveis de expressão dos antígenos CD105, CD166, CD90 e CD73, que são marcadores de CT mesenquimais. A plasticidade das células foi confirmada pela identificação de depósitos de cálcio nas culturas que receberam meio osteogênico, e de acúmulo lipídico intracelular nas culturas que receberam meio adipogênico. CONCLUSÕES: as CT de dentes decíduos têm um potencial promissor de aplicação em regeneração tecidual. Sendo assim, é importante difundir entre os cirurgiões-dentistas o conhecimento sobre a existência e as características dessa fonte de CT, discutindo a técnica utilizada, suas limitações e possíveis indicações. INTRODUCTION: Stem cells (SCs) are capable of inducing tissue regeneration and are, therefore, potentially therapeutic. Similarly to bone marrow and umbilical cords, dental pulp is one of the available sources of SCs. The fact that these cells are easily accessible and that deciduous teeth are not vital organs, and are normally discarded after exfoliation, make them particularly attractive for use in safety and viability tests. OBJECTIVE: To describe the collection, isolation and culture of SCs obtained from the pulp of deciduous teeth as well as their characterization by flow cytometry, and the induction of differentiation into osteogenic and adipogenic lineages. METHODS: SCs were obtained in a relatively straightforward manner and showed good proliferative capacity, even from a small amount of pulp tissue. RESULTS: Analysis by flow cytometry confirmed the characteristics of mesenchymal SCs with low expression of CD34 and CD45 antigens, which are markers for hematopoietic cells, and high levels of expression of CD105, CD166, CD90 and CD73 antigens, which are markers for mesenchymal SCs. Cell plasticity was confirmed by identifying calcium deposits in cultures that received osteogenic medium, and intracellular lipid accumulation in adipogenic cultures that received adipogenic medium. CONCLUSIONS: SCs collected from deciduous teeth show promising potential for application in tissue regeneration. Therefore, it is important that knowledge about the existence and characteristics of this source of stem cells be disseminated among dentists and that the technique, its limitations and possible indications are highlighted and discussed.
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- 2011
26. A New Source of (R)-Limonene and Rotundifolone from Leaves of Lippia pedunculosa (Verbenaceae) and their Trypanocidal Properties
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Menezes, Leociley Rocha Alencar, primary, Santos, Nilmara Nunes, additional, Meira, Cássio Santana, additional, dos Santos, Jamyle Andrade Ferreira, additional, Guimarães, Elisalva Teixeira, additional, Soares, Milena Botelho Pereira, additional, Nepel, Angelita, additional, Barison, Andersson, additional, and Costa, Emmanoel Vilaça, additional
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- 2014
- Full Text
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27. Use of Autologous Mesenchymal Stem Cells Derived from Bone Marrow for the Treatment of Naturally Injured Spinal Cord in Dogs
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Penha, Euler Moraes, primary, Meira, Cássio Santana, additional, Guimarães, Elisalva Teixeira, additional, Mendonça, Marcus Vinícius Pinheiro, additional, Gravely, Faye Alice, additional, Pinheiro, Cláudia Maria Bahia, additional, Pinheiro, Taiana Maria Bahia, additional, Barrouin-Melo, Stella Maria, additional, Ribeiro-dos-Santos, Ricardo, additional, and Soares, Milena Botelho Pereira, additional
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- 2014
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- View/download PDF
28. Transplantation of Stem Cells Obtained from Murine Dental Pulp Improves Pancreatic Damage, Renal Function, and Painful Diabetic Neuropathy in Diabetic Type 1 Mouse Model
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Guimarães, Elisalva Teixeira, primary, Da Silva Cruz, Gabriela, additional, De Almeida, Tiago Farias, additional, De Freitas Souza, Bruno Solano, additional, Kaneto, Carla Martins, additional, Vasconcelos, Juliana Fraga, additional, Santos, Washington Luis Conrado Dos, additional, Ribeiro-Dos-Santos, Ricardo, additional, Villarreal, Cristiane Flora, additional, and Soares, Milena Botelho Pereira, additional
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- 2013
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29. Chemical Composition and Anti-Trypanosoma cruzi Activity of Essential Oils Obtained from Leaves of Xylopia frutescens and X. laevigata (Annonaceae)
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da Silva, Thanany Brasil, primary, Menezes, Leociley Rocha Alencar, additional, Sampaio, Marília Fernanda Chaves, additional, Meira, Cássio Santana, additional, Guimarães, Elisalva Teixeira, additional, Soares, Milena Botelho Pereira, additional, do Nascimento Prata, Ana Paula, additional, de Lima Nogueira, Paulo Cesar, additional, and Costa, Emmanoel Vilaça, additional
- Published
- 2013
- Full Text
- View/download PDF
30. Structural Investigation of Anti-Trypanosoma cruzi 2-Iminothiazolidin-4-ones Allows the Identification of Agents with Efficacy in Infected Mice
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Moreira, Diogo Rodrigo Magalhaes, primary, Costa, Salvana Priscylla Manso, additional, Hernandes, Marcelo Zaldini, additional, Rabello, Marcelo Montenegro, additional, de Oliveira Filho, Gevanio Bezerra, additional, de Melo, Cristiane Moutinho Lagos, additional, da Rocha, Lucas Ferreira, additional, de Simone, Carlos Alberto, additional, Ferreira, Rafaela Salgado, additional, Fradico, Jordana Rodrigues Barbosa, additional, Meira, Cássio Santana, additional, Guimarães, Elisalva Teixeira, additional, Srivastava, Rajendra Mohan, additional, Pereira, Valéria Rêgo Alves, additional, Soares, Milena Botelho Pereira, additional, and Leite, Ana Cristina Lima, additional
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- 2012
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31. Coleta e cultura de células-tronco obtidas da polpa de dentes decíduos: técnica e relato de caso clínico
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Jesus, Alan Araujo de, primary, Soares, Milena Botelho Pereira, additional, Soares, Ana Prates, additional, Nogueira, Renata Campos, additional, Guimarães, Elisalva Teixeira, additional, Araújo, Telma Martins de, additional, and Santos, Ricardo Ribeiro dos, additional
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- 2011
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- View/download PDF
32. Structural Investigation of Anti-Trypanosomacruzi2-Iminothiazolidin-4-ones Allows the Identification of Agents with Efficacy in Infected Mice.
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Moreira, Diogo Rodrigo Magalhaes, Costa, Salvana Priscylla Manso, Hernandes, Marcelo Zaldini, Rabello, Marcelo Montenegro, de Oliveira Filho, Gevanio Bezerra, de Melo, Cristiane Moutinho Lagos, da Rocha, Lucas Ferreira, de Simone, Carlos Alberto, Ferreira, Rafaela Salgado, Fradico, Jordana Rodrigues Barbosa, Meira, Cássio Santana, Guimarães, Elisalva Teixeira, Srivastava, Rajendra Mohan, Pereira, Valéria Rêgo Alves, Soares, Milena Botelho Pereira, and Leite, Ana Cristina Lima
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- 2012
- Full Text
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33. Collection and culture of stem cells derived from dental pulp of deciduous teeth: Technique and clinical case report.
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de Jesus, Alan Araujo, Soares, Milena Botelho Pereira, Soares, Ana Prates, Nogueira, Renata Campos, Guimarães, Elisalva Teixeira, de Araújo, Telma Martins, and Santos, Ricardo Ribeiro dos
- Subjects
DENTAL pulp ,DECIDUOUS teeth ,STEM cells ,CELL culture ,UMBILICAL cord ,BONE marrow - Abstract
Introduction: Stem cells (SCs) are capable of inducing tissue regeneration and are, therefore, potentially therapeutic. Similarly to bone marrow and umbilical cords, dental pulp is one of the available sources of SCs. The fact that these cells are easily accessible and that deciduous teeth are not vital organs, and are normally discarded after exfoliation, make them particularly attractive for use in safety and viability tests. Objective: To describe the collection, isolation and culture of SCs obtained from the pulp of deciduous teeth as well as their characterization by flow cytometry, and the induction of differentiation into osteogenic and adipogenic lineages. Methods: SCs were obtained in a relatively straightforward manner and showed good proliferative capacity, even from a small amount of pulp tissue. Results: Analysis by flow cytometry confirmed the characteristics of mesenchymal SCs with low expression of CD34 and CD45 antigens, which are markers for hematopoietic cells, and high levels of expression of CD105, CD166, CD90 and CD73 antigens, which are markers for mesenchymal SCs. Cell plasticity was confirmed by identifying calcium deposits in cultures that received osteogenic medium, and intracellular lipid accumulation in adipogenic cultures that received adipogenic medium. Conclusions: SCs collected from deciduous teeth show promising potential for application in tissue regeneration. Therefore, it is important that knowledge about the existence and characteristics of this source of stem cells be disseminated among dentists and that the technique, its limitations and possible indications are highlighted and discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2011
34. Colaboradores
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ODUNAYO, ADESOLA, QUINTANA, ADRIANA LÓPEZ, LIMA, ALEXANDRE, VIEIRA, ALINE BOMFIM, DE CASTRO, ANDERSON VIEIRA, DE ABREU OLIVEIRA, ANDRÉ LACERDA, ROMALDINI, ANDRÉ FONSECA, CONTI-PATARA, ANDREZA, DA CRUZ, ANTÔNIO CARLOS GONÇALVES, RECHE, ARCHIVALDO, Junior, MARTINS RIBEIRO, CÉSAR AUGUSTO, SILVA, CÉSAR AUGUSTO MELO E, VIDALES, DANIEL SÁEZ, SILVERSTEIN, DEBORAH C., LIU, DEBRA TA-YING, ROCHA, DENERSON FERREIRA, FANTONI, DENISE T., CROWE, DENNIS T. (TIM), Jr., PORTELA, DIEGO A., MACINTIRE, DOUGLASS K., DE CARVALHO, EDGAR FRANCO RAMOS, DE MERLO, ELENA MARTÍNEZ, MAZZAFERRO, ELISA, THOMAS, EMILY K., JARAMILLO, ENRIQUE YARTO, GARCIA, ENRY, VIDAL, ENZO BOSCO, GUIMARÃES, ELISALVA TEIXEIRA, GOMES, EROS SILVA, MELE, ESTEBAN, PENHA, EULER MORAES, ARAYA, FELIPE JAVIER LILLO, DA COSTA, FERNANDA AMORIM VIEIRA, VIANA, FERNANDO ANTÔNIO BRETAS, DOS SANTOS, FLÁVIO AUGUSTO MARQUES, NORSWORTHY, GARY D., NETO, GLÁUCIA BUENO PEREIRA, DE OLIVEIRA FULGÊNCIO, GUSTAVO, BAKKER, JAN, LAZO, JAVIER GREEN, ARAOS, JOAQUIN, Jr., TOLEDO, JOÃO CARLOS, Júnior, SOARES, JOÃO HENRIQUE NEVES, FILHO, JOSÉ CARLOS KLOSS, ROSA, KALEIZU TEODORO, SANOTORO-BEER, KARI, CARDOZO, LARISSA B., FADEL, LEANDRO, WANG, LILIA, BERNARDES, LOURENÇO, GASPAR, LUCIANO LIMA, TELLO, LUIS H., PIMENTA, MARCELA MALVINI, DA ROZA, MARCELLO RODRIGUES, KAHVEGIAN, MARCIA, DA COSTA, MARCO ANTONIO FERREIRA, GIOSO, MARCO ANTONIO, DE ALBUQUERQUE GRESS, MARIA ALICE KUSTER, LIMA, MARIA CARMEN CIOGLIA DIAS, DOS SANTOS, MARIA CAROLINA FARAH PAPPALARDO, NIZA, MARIA MANUELA RODEIA ESPADA, CAVALCANTI, MARIANA FERNANDES, ZORZELLA, MARIANA, REZENDE, MARILHA, SOARES, MILENA BOTELHO PEREIRA, FÉLIX, NUNO MANUEL MIRA FLOR SANTOS, NETO, OTÁVIO PEDRO, GOMES, OTONI M., OTERO, PABLO, GUZMÁN, PATRICIO TORRES, DE SOUZA, RAQUEL PUSCH, PIETRO, RENATA, RABELO, RODRIGO CARDOSO, CARDOSO, RUBEM BITTENCOURT, Junior, GONÇALVES, SIMONE, KALENSKI, TABATHA DO AMARAL, FORGIONE, UBER EDUARDO, TEIXEIRA, VALÉRIA NATASCHA, THAWLEY, VINCENT J., and SEVERO, WANDERLEY, Jr.
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- 2012
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35. NMR data from the compounds described in the paper "Inhibition of Macrophage Activation and Lymphocyte Function of Annona vepretorum Mart. (Annonaceae) Natural Products"
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Santos, Tatiana Barbosa, primary, Meira, Cássio Santana, additional, MIranda, Cibele do Carmo, additional, Menezes, Leociley Rocha Alencar, additional, Dutra, Lívia Macedo, additional, Soares, Liviane do Nascimento, additional, Barison, Andersson, additional, Costa, Emmanoel Vilaça, additional, Guimarães, Elisalva Teixeira, additional, and Soares, Milena Botelho Pereira, additional
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- View/download PDF
36. A New Source of (R)-Limonene and Rotundifolone from Leaves of Lippia pedunculosa(Verbenaceae) and their Trypanocidal Properties
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Menezes, Leociley Rocha Alencar, Santos, Nilmara Nunes, Meira, Cássio Santana, dos Santos, Jamyle Andrade Ferreira, Guimarães, Elisalva Teixeira, Soares, Milena Botelho Pereira, Nepel, Angelita, Barison, Andersson, and Costa, Emmanoel Vilaça
- Abstract
Investigation by GC-FID and GC-MS of the essential oil (LPOE) from the leaves of Lippia pedunculosarevealed, as the major compounds, the monoterpenes rotundifolone (71.7%) and (R)-limonene (21.8%). These two compounds and the minor constituent piperitenone (1.2%) were also isolated from the leaves and identified by spectrometric analysis. LPOE and isolated compounds were evaluated for their trypanocidal activity against epimastigote and trypomastigote forms of Trypanosoma cruzi. Significant results with IC50values lower than 34.0 μg.mL−1were observed against these forms of T. cruzifor LPOE and isolated compounds. Rotundifolone was the most active compound with an IC50lower than 10.0 μg.mL–1for both forms of T. cruzi. The effects of LPOE and isolated compounds were also evaluated in cultures of macrophages infected with T. cruzi. Treatment with (R)-limonene and rotundifolone caused a moderate reduction in the percentage of macrophages infected by T. cruziand in the number of intracellular parasites at concentrations non-toxic to macrophages.
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- 2014
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37. Chemical Composition and Anti-Trypanosoma cruziActivity of Essential Oils Obtained from Leaves of Xylopia frutescensand X. laevigata(Annonaceae)
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da Silva, Thanany Brasil, Menezes, Leociley Rocha Alencar, Sampaio, Marília Fernanda Chaves, Meira, Cássio Santana, Guimarães, Elisalva Teixeira, Soares, Milena Botelho Pereira, do Nascimento Prata, Ana Paula, de Lima Nogueira, Paulo Cesar, and Costa, Emmanoel Vilaça
- Abstract
Essential oils from leaves of Xylopia frutescens(XFMJ) and two specimens of Xylopia laevigata(XLMC and XLSI) were obtained by hydrodistillation using a Clevenger-type apparatus, and analyzed by GC-MS and GC-FID. Sesquiterpenes dominated the essential oils. The main constituents of XFMJ were (E)-caryophyllene (24.8%), bicyclogermacrene (20.8%), germacrene D (17.0%), β-elemene (7.9%), and (E)-β-ocimene (6.8%). XLMC contained significant quantities of germacrene D (18.9%), bicyclogermacrene (18.4%), β-elemene (9.5%), 5-selinene (9.2%), (E)-caryophyllene (8.5%), germacrene B (5.7%) and γ-muurolene (5.7%), while germacrene D (27.0%), bicyclogermacrene (12.8%), (E)-caryophyllene (8.6%), γ-muurolene (8.6%), 5-cadinene (6.8%), and germacrene B (6.0%) were the main components of XLSI. The essential oils had trypanocidal activity against the Y strain of Trypanosoma cruzi. with IC50values lower than 30 μg.mL−1and 15 μg.mL−1against epimastigote and trypomastigote forms of T. cruzi. respectively, and were also able to reduce the percentage in vitroof T. cruzi-infected macrophages and the intracellular number of amastigotes at concentrations that were non-cytotoxic to macrophages.
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- 2013
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38. Avaliação do potencial terapêutico das células mesenquimais e do meio condicionado no tratamento das disfunções cardíacas decorrentes da obesidade e DM2 experimental
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Daltro, Pâmela Santana, Macambira, Simone Garcia, Baccan, Gyselle Chrystina, Guimarães, Elisalva Teixeira, França, Luciana Souza de Aragão, and Tavares, Natalia Machado
- Subjects
Bioquímica ,Disfunção cardíaca ,Obesidade ,Células tronco mesenquimais ,Mesenchymal stromal cells ,Cardiac dysfunction ,Obesity ,Terapia Celular ,Cell therapy - Abstract
Submitted by PMBqBM null (pmbqbm@ufba.br) on 2021-11-26T18:55:41Z No. of bitstreams: 1 TESE Pamela S Daltro_PMBqBM UFBA.pdf: 2934190 bytes, checksum: b2daa5b258e251d443e279afc0984d91 (MD5) Approved for entry into archive by Delba Rosa (delba@ufba.br) on 2021-11-29T15:07:25Z (GMT) No. of bitstreams: 1 TESE Pamela S Daltro_PMBqBM UFBA.pdf: 2934190 bytes, checksum: b2daa5b258e251d443e279afc0984d91 (MD5) Made available in DSpace on 2021-11-29T15:07:25Z (GMT). No. of bitstreams: 1 TESE Pamela S Daltro_PMBqBM UFBA.pdf: 2934190 bytes, checksum: b2daa5b258e251d443e279afc0984d91 (MD5) FAPESB Hábitos alimentares com altos teores de gordura e o estilo de vida sedentário são fatores desencadeantes da obesidade, diabetes mellitus tipo 2 (DM2) e insuficiência cardíaca. Células mesenquimais (MSC) surgem como uma ferramenta terapêutica capaz de melhorar o quadro de doenças cardiovasculares, mas também de outras condições degenerativas, devido ao seu efeito regenerativo induzido pela sua ação parácrina. Com base nisso, os fatores secretados no meio condicionado (MC) destas células também são investigados na regeneração tecidual. Este estudo visou avaliar o potencial terapêutico das MSC e do seu MC no tratamento das complicações cardíacas em modelo experimental de obesidade e diabetes induzidas por dieta com alto teor de gordura (HFD). Avaliações bioquímicas, murinométricas e funcionais cardíacas foram realizadas nos períodos: pré-indução da obesidade, pós-indução e póstratamento. Após 36 semanas de uso da HFD, esta foi substituída pela dieta padrão seguida pelo tratamento: MSC, MC e DMEM. A disfunção metabólica foi avaliada através de parâmetros bioquímicos e índice de massa corpórea. A função cardíaca foi avaliada por eletrocardiografia, ecocardiografia e teste ergométrico. A presença de fibrose no miocárdio foi avaliada por análise histopatológica. Os mecanismos de ação da terapia celular foram investigados no tecido cardíaco por qRT-PCR. A caracterização do MC foi realizada por protein array que revelou a presença de 19 proteínas incluindo citocinas e fatores de crescimento. Os camundongos alimentados com HFD apresentaram arritmias cardíacas, expressão alterada de genes cardíacos e fibrose do miocárdio, refletindo na redução da capacidade de efetuar esforço físico. A administração da MSC ou MC reverteu as arritmias e recuperou a capacidade de realizar exercício físico. Na primeira etapa deste estudo, observouse a melhora funcional cardíaca em consonância com a normalização da expressão dos genes GATA4, conexina 43 e COL1A1 nos corações de camundongos tratados com MSC ou MC. A expressão dos genes troponina I, adiponectina, TGF-β1, PPARγ, IGF-1, SOCS3, MMP9 e TIMP1 normalizaram após o tratamento com MSC, mas não com o MC. Além disso, a administração de MSC ou MC reduziu o percentual de área com fibrose. A fim de elucidar a melhora significativa alcançada pelas MSC, na segunda etapa deste estudo, aprofundou-se a investigação dos mecanismos moleculares envolvidos neste efeito terapêutico. Foi investigada a expressão de genes relacionados ao remodelamento tecidual (SPARC, CTGF e SMAD7), à inflamação (CCL2 e CHI3L3), bem como, à sobrevivência e proliferação celular (PTEN e STAT3) por qRT-PCR. Elevados níveis da expressão gênica do SMAD7, SPARC, CTGF, CCL2, CHI3L3, STAT3 e PTEN foram detectados apenas no grupo tratado com MSC. Os resultados apresentados neste estudo sugerem que MSC e CM têm um efeito benéfico sobre os distúrbios cardíacos decorrentes da obesidade e DM2, corroborando com a ação parácrina das MSC através da modulação de elementos envolvidos em processos de regeneração tecidual, tais como desenvolvimento de fibrose. High fat eating habits and sedentary lifestyle are triggering factors of obesity, diabetes mellitus type 2 (DM2) and heart failure. Mesenchymal cells (MSC) appear as a therapeutic tool capable of improving cardiovascular disease, but also other degenerative conditions, due to its regenerative effect induced by its paracrine action. Based on this, the factors secreted in the conditioned medium (CM) of these cells are also investigated in tissue regeneration. This study aimed to evaluate the therapeutic potential of MSC and its CM in the treatment of cardiac complications in an experimental model of obesity and diabetes induced by high fat diet (HFD). Biochemical, murinometric and cardiac functional evaluations were performed in the following periods: pre-induction of obesity, post-induction and post-treatment. After 36 weeks of use of HFD, it was replaced by the standard diet followed by treatment: MSC, MC and DMEM. Metabolic dysfunction was assessed by biochemical parameters and body mass index. Cardiac function was assessed by electrocardiography, echocardiography and treadmill test. The presence of myocardial fibrosis was assessed by histopathological analysis. The action mechanisms of cell therapy were investigated in cardiac tissue by qRT-PCR. CM characterization was performed by protein array which revealed the presence of 19 proteins including cytokines and growth factors. HFD-fed mice had cardiac arrhythmias, altered expression of cardiac genes, and myocardial fibrosis, reflecting the reduced ability to exercise. MSC or CM administration reversed arrhythmias and regained the ability to exercise. In the first stage of this study, cardiac functional improvement was observed in line with normalization of GATA4, connexin 43 and COL1A1 gene expression in the hearts of mice treated with MSC or CM. The expression of troponin I, adiponectin, TGF-β1, PPARγ, IGF-1, SOCS3, MMP9 and TIMP1 genes normalized after treatment with MSC, but not with CM. In addition, administration of MSC or CM reduced the percentage of fibrosis area. In order to elucidate the most significant improvement achieved by MSC, in the second stage of this study, the investigation of the molecular mechanisms involved in this therapeutic effect was deepened. The expression of genes related to tissue remodeling (SPARC, CTGF and SMAD7), inflammation (CCL2 and CHI3L3), as well as cell survival and proliferation (PTEN and STAT3) by qRT-PCR were investigated. High levels of SMAD7, SPARC, CTGF, CCL2, CHI3L3, STAT3 and PTEN gene expression were detected only in the MSC treated group. These results suggest that MSC and CM have a beneficial effect on cardiac disorders due to obesity and DM2, corroborating to the paracrine action of MSCs by modulating elements involved in tissue regeneration processes, such as fibrosis development.
- Published
- 2020
39. Efeito anti-inflamatório de derivado N-acil-hidrazona (HAH2) em modelo murino de inflamação alérgica das vias aéreas inferiores
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Cerqueira, Jéssica Vieira, Soares, Milena Botelho Pereira, França, Luciana Souza de Aragão, Costa, Ryan dos Santos, and Guimarães, Elisalva Teixeira
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inflamação alérgica experimental ,N acil-hidrazonas ,IMUNOLOGIA ,Asma - Abstract
Submitted by Pós Imunologia (ppgimicsufba@gmail.com) on 2017-12-19T18:41:29Z No. of bitstreams: 1 DISSERTAÇÃO-MESTRADO JESSICA.versaofinal.pdf: 1574441 bytes, checksum: 1e30141e7c5b11bb57def43ebb99bc3a (MD5) Approved for entry into archive by Edvaldo Souza (edvaldosouza@ufba.br) on 2017-12-21T20:21:07Z (GMT) No. of bitstreams: 1 DISSERTAÇÃO-MESTRADO JESSICA.versaofinal.pdf: 1574441 bytes, checksum: 1e30141e7c5b11bb57def43ebb99bc3a (MD5) Made available in DSpace on 2017-12-21T20:21:07Z (GMT). No. of bitstreams: 1 DISSERTAÇÃO-MESTRADO JESSICA.versaofinal.pdf: 1574441 bytes, checksum: 1e30141e7c5b11bb57def43ebb99bc3a (MD5) CAPES Estima-se que cerca de 334 milhões de pessoas em todo mundo sofram de asma, e essas estimativas, bem como a gravidade dos sintomas, têm aumentado nas últimas décadas. A asma é uma doença inflamatória crônica, complexa e heterogênea, caracterizada por obstrução das vias aéreas inferiores. Atualmente os glicocorticóides são os fármacos mais utilizados no tratamento e controle dos sintomas da asma, porém seu uso prolongado pode causar efeitos adversos graves. Um grupo químico que tem demonstrado efeitos farmacológicos benéficos, como anti-inflamatórios, é o das hidrazonas, apresentando na sua estrutura básica centros ativos compostos por carbono e nitrogênio, os principais responsáveis pelas propriedades físicas e químicas da hidrazonas. O composto HAH2 (3,5-dinitro-N’-(2-(4mitrofenil)hidrazino)propano-2-ilideno)benzohidrazida) é um derivado de N-acil-hidrazonas, que fazem parte de uma família de hidrazonas com estrutura química frequentemente utilizada para design de novos fármacos e de compostos heterocíclicos. O objetivo desse trabalho foi investigar o efeito terapêutico do HAH2 em modelo murino de inflamação alérgica das vias aéreas. Camundongos BALB/c foram sensibilizados e desafiados com ovalbumina por cinco dias consecutivos. O tratamento com HAH2 foi realizado por via oral 1 hora antes do desafio com antígenos. A administração de HAH2 causou redução da celularidade e dos eosinófilos no BALF (BALF, do inglês broncho-alveolar lavage fluid). O tratamento com HAH2 também reduziu citocinas do perfil de resposta Th2, IL-4, IL-5 e IL-13, de modo semelhante ao observado em camundongos tratados com dexametasona. Em contrapartida, a produção de IgE não foi significativamente alterada após o tratamento com HAH2. Os animais que receberam o tratamento com HAH2, também tiveram uma redução do infiltrado de leucócitos no tecido pulmonar, quando comparados com o grupo que recebeu apenas o veículo como tratamento. Além disso, foi observado uma redução na produção de muco dos animais tratados quando comparados com os que receberam apenas veículo. Os resultados mostraram que o composto HAH2 possui característica imunomodulatória, sugerindo potencial terapêutico para tratar doenças alérgicas. It is estimated that about 334 million people worldwide suffer from asthma, and these estimates, as well as the severity of symptoms, have increased in the last decades. Asthma is a chronic, complex and heterogeneous inflammatory disease, characterized by obstruction of the lower airways. Glucocorticoids are currently the most widely used drugs in the treatment and control of asthma symptoms, but their prolonged use can cause serious adverse effects. A chemical group that has demonstrated beneficial pharmacological effects, such as anti-inflammatories, is that of hydrazones, presenting in its basic structure active centers composed of carbon and nitrogen, the main ones responsible for the physical and chemical properties of the hydrazones. The HAH 2 compound (3,5-dinitro-N’-(2-(4mitrofenil)hidrazino)propano-2-ilideno)benzohidrazida) is derived from the N-acyl-hydrazones, which are part of a hydrazone family of chemical structure often used to design novel drugs and heterocyclic compounds. The objective of this study was to investigate the therapeutic effect of HAH2 in an murine model of allergic airway inflammation. BALB/c mice were sensitized and challenged with ovalbumin for five consecutive days. Treatment with HAH2 was performed orally 1 hour prior to challenge with antigens. Administration of HAH2 caused reduction of cellularity and eosinophils in BALF (broncho-alveolar lavage fluid). Treatment with HAH2 also reduced cytokines in the Th2 response profile, IL-4, IL-5 and IL-13, similar to that seen in mice treated with dexamethasone. In contrast, IgE production was not significantly altered after treatment with HAH2. Animals that received HAH2 treatment also had a reduction in leukocyte infiltrate in lung tissue when compared to the group that received only vehicle as treatment. In addition, a reduction in the mucus production of the treated animals was observed as compared to those receiving vehicle alone. The results showed that the compound HAH2 possesses immunomodulatory characteristics, suggesting therapeutic potential to treat allergic diseases.
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- 2017
40. Potent anti-inflammatory activity of betulinic acid treatment in a model of lethal endotoxemia.
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Costa JF, Barbosa-Filho JM, Maia GL, Guimarães ET, Meira CS, Ribeiro-dos-Santos R, de Carvalho LC, and Soares MB
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- Animals, Cytokines genetics, Cytokines metabolism, Gene Expression Regulation drug effects, Interleukin-10 genetics, Interleukin-10 metabolism, Lipopolysaccharides administration & dosage, Male, Mice, Mice, Inbred BALB C, Mice, Inbred C57BL, Mice, Knockout, Molecular Structure, Nitric Oxide genetics, Nitric Oxide metabolism, Pentacyclic Triterpenes, Triterpenes administration & dosage, Betulinic Acid, Anti-Inflammatory Agents pharmacology, Endotoxemia drug therapy, Lipopolysaccharides toxicity, Triterpenes therapeutic use
- Abstract
Betulinic acid (BA) is a lupane-type triterpene with a number of biological activities already reported. While potent anti-HIV and antitumoral activities were attributed to BA, it is considered to have a moderate anti-inflammatory activity. Here we evaluated the effects of BA in a mouse model of endotoxic shock. Endotoxemia was induced through intraperitoneally LPS administration, nitric oxide (NO) and cytokines were assessed by Griess method and ELISA, respectively. Treatment of BALB/c mice with BA at 67 mg/kg caused a 100% survival against a lethal dose of lipopolysaccharide (LPS). BA treatment caused a reduction in TNF-α production induced by LPS but did not alter IL-6 production. Moreover, BA treatment increased significantly the serum levels of IL-10 compared to vehicle-treated, LPS-challenged mice. To investigate the role of IL-10 in BA-induced protection, wild-type and IL-10(-/-) mice were studied. In contrast to the observations in IL-10(+/+) mice, BA did not protect IL-10(-/-) mice against a lethal LPS challenge. Addition of BA inhibited the production of pro-inflammatory mediators by macrophages stimulated with LPS, while promoting a significant increase in IL-10 production. BA-treated peritoneal exudate macrophages produced lower concentrations of TNF-α and NO and higher concentrations of IL-10 upon LPS stimulation. Similarly, macrophages obtained from BA-treated mice produced less pro-inflammatory mediators and increased IL-10 when compared to non-stimulated macrophages obtained from vehicle-treated mice. In conclusion, we have shown that BA has a potent anti-inflammatory activity in vivo, protecting mice against LPS by modulating TNF-α production by macrophages in vivo through a mechanism dependent on IL-10., (Copyright © 2014 Elsevier B.V. All rights reserved.)
- Published
- 2014
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