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Silva RL, Silva RC, Pereira AR. Releasing antiferromagnetic skyrmions from local magnetic-anisotropy defects. J Phys Condens Matter 2023; 36:135803. [PMID: 38100826 DOI: 10.1088/1361-648x/ad162d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 12/15/2023] [Indexed: 12/17/2023]
Abstract
Lattice defects may work as a kind of apparatus for catching topological excitations, preventing their escape. So, the problem of removing skyrmions from eventual local defects in magnetic materials must be closely related to new technologies such as skyrmionic. Here, we examine the conditions for drawing a skyrmion from a magnetic impurity in a two-dimensional antiferromagnetic system by applying spin-polarized currents (SPC). Two types of impurities are investigated (local easy-axis and easy-plane anisotropy defects). Also, two methods to release the skyrmion with SPC are explored. In principle, our results could be qualitatively relevant to any other type of lattice defect.
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Affiliation(s)
- R L Silva
- Departamento de Ciências Naturais, Universidade Federal do Espírito Santo, Rodovia Governador Mário Covas, Km 60, Bairro Litorâneo, São Mateus, ES CEP 29932-540, Brazil
| | - R C Silva
- Departamento de Ciências Naturais, Universidade Federal do Espírito Santo, Rodovia Governador Mário Covas, Km 60, Bairro Litorâneo, São Mateus, ES CEP 29932-540, Brazil
| | - A R Pereira
- Departamento de Física, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-000, Brazil
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Diniz AF, Santos B, Nóbrega LMMO, Santos VRL, Mariz WS, Cruz PSC, Nóbrega RO, Silva RL, Paula AFR, Santos JRDA, Pessôa HLF, Oliveira-Filho AA. Antibacterial activity of Thymus vulgaris (thyme) essential oil against strains of Pseudomonas aeruginosa, Klebsiella pneumoniae and Staphylococcus saprophyticus isolated from meat product. BRAZ J BIOL 2023; 83:e275306. [PMID: 37585936 DOI: 10.1590/1519-6984.275306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 06/01/2023] [Indexed: 08/18/2023] Open
Abstract
Meat products represent an important component of the human diet and are a good source of nutrients. Food-borne microorganisms are the main pathogens that cause human diseases as a result of food consumption, especially products of animal origin. The objective of the present research was to verify the antibacterial activity of the essential oil of Thymus vulgaris against strains of Klebsiella pneumoniae, Pseudomonas aeruginosa and Staphylococcus saprophyticus isolated from meat products. For this, the analyses of Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (MBC) were performed in microdilution plates. The association of the product with antimicrobials was also studied using disk diffusion. And the anti-adherent activity, which was determined in the presence of sucrose, in glass tubes. Thyme oil showed a strong inhibitory activity against K. pneumoniae, P. aeruginosa and S. saprophyticus, with the MIC values ranging from 64 to 512 μg/mL, and bactericidal effect for most strains, with MBC values ranging from 256 to 1,024 μg/mL. T. vulgaris oil exhibited varied interactions in association with the antimicrobials, with synergistic (41.67%), indifferent (50%) and antagonistic (8.33%) effects. Regarding the anti-adherent activity, the test product was effective in inhibiting the adherence of all bacterial strains under study. Therefore, thyme oil presents itself as an antibacterial and anti-adherent agent against K. pneumoniae, P. aeruginosa and S. saprophyticus, being a natural product that can represent an interesting alternative in the efforts to combat foodborne diseases.
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Affiliation(s)
- A F Diniz
- Universidade Federal de Campina Grande - UFCG, Centro de Saúde e Tecnologia Rural, Programa de Pós-graduação em Ciência e Saúde Animal, Patos, PB, Brasil
| | - B Santos
- Universidade Federal de Campina Grande - UFCG, Centro de Saúde e Tecnologia Rural, Programa de Pós-graduação em Ciência e Saúde Animal, Patos, PB, Brasil
| | - L M M O Nóbrega
- Universidade Federal de Campina Grande - UFCG, Centro de Saúde e Tecnologia Rural, Programa de Pós-graduação em Ciência e Saúde Animal, Patos, PB, Brasil
| | - V R L Santos
- Universidade Federal de Campina Grande - UFCG, Centro de Saúde e Tecnologia Rural, Programa de Pós-graduação em Ciência e Saúde Animal, Patos, PB, Brasil
| | - W S Mariz
- Universidade Federal de Campina Grande - UFCG, Centro de Saúde e Tecnologia Rural, Programa de Pós-graduação em Ciência e Saúde Animal, Patos, PB, Brasil
| | - P S C Cruz
- Universidade Federal de Campina Grande - UFCG, Centro de Saúde e Tecnologia Rural, Programa de Pós-graduação em Ciência e Saúde Animal, Patos, PB, Brasil
| | - R O Nóbrega
- Universidade Federal da Paraíba - UFPB, Programa de Pós-graduação em Desenvolvimento e Inovação Tecnológica de Medicamentos, João Pessoa, PB, Brasil
| | - R L Silva
- Universidade Federal da Paraíba - UFPB, Programa de Pós-graduação em Desenvolvimento e Inovação Tecnológica de Medicamentos, João Pessoa, PB, Brasil
| | - A F R Paula
- Universidade Federal da Paraíba - UFPB, Programa de Pós-graduação em Desenvolvimento e Inovação Tecnológica de Medicamentos, João Pessoa, PB, Brasil
| | - J R D A Santos
- Universidade Federal da Paraíba - UFPB, Programa de Pós-graduação em Desenvolvimento e Inovação Tecnológica de Medicamentos, João Pessoa, PB, Brasil
| | - H L F Pessôa
- Universidade Federal da Paraíba - UFPB, Programa de Pós-graduação em Desenvolvimento e Inovação Tecnológica de Medicamentos, João Pessoa, PB, Brasil
| | - A A Oliveira-Filho
- Universidade Federal de Campina Grande - UFCG, Centro de Saúde e Tecnologia Rural, Programa de Pós-graduação em Ciência e Saúde Animal, Patos, PB, Brasil
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Maganin AG, Souza GR, Fonseca MD, Lopes AH, Mano Guimarães RM, Dagostin A, Cecilio NT, Mendes AS, Gonçalves WA, Silva CE, Fernandes Gomes FI, Mauriz Marques LM, Silva RL, Arruda LM, Santana DA, Lemos H, Huang L, Davoli-Ferreira M, Santana-Coelho DS, Sant'Anna MB, Kusuda R, Talbot J, Pacholczyk G, Buqui GA, Lopes N, Alves-Filho JC, Leão RM, O'Connor JC, Cunha FQ, Mellor A, Cunha T. Meningeal dendritic cells drive neuropathic pain through elevation of the kynurenine metabolic pathway in mice. J Clin Invest 2022; 132:153805. [PMID: 36227694 DOI: 10.1172/jci153805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 10/11/2022] [Indexed: 11/17/2022] Open
Abstract
Neuropathic pain is one of the most important clinical consequences of injury to the somatosensory system. Nevertheless, the critical pathophysiological mechanisms involved in neuropathic pain development are poorly understood. In this study, we found that neuropathic pain is abrogated when the kynurenine metabolic pathway initiated by the enzyme indoleamine 2,3-dioxygenase (IDO1) is ablated pharmacologically or genetically. Mechanistically, it was found that IDO1-expressing dendritic cells (DCs) accumulated in the dorsal root leptomeninges and led to an increase in kynurenine levels in the spinal cord. In the spinal cord, kynurenine was metabolized by kynurenine-3-monooxygenase-expressing astrocytes into a pro-nociceptive metabolite 3-hydroxykynurenine. Ultimately, 3-hydroxyanthranilate 3,4-dioxygenase-derived quinolinic acid formed in the final step of the canonical KYNPATH was also involved in neuropathic pain development through the activation of the glutamatergic N-methyl-D-aspartate (NMDA) receptor. In conclusion, these data revealed a novel role for DCs driving neuropathic pain development through elevation of the kynurenine metabolic pathway. This novel paradigm offers potential new targets for drug development against this type of chronic pain.
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Affiliation(s)
- Alexandre Gm Maganin
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Guilherme R Souza
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Miriam D Fonseca
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Alexandre H Lopes
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Rafaela M Mano Guimarães
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - André Dagostin
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Nerry T Cecilio
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Atlante S Mendes
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - William A Gonçalves
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Conceição Ea Silva
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | | | - Lucas M Mauriz Marques
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Rangel L Silva
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Letícia M Arruda
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Denis A Santana
- Department of Pharmacology, University of São Paulo at Ribeirão Preto Medical School, Ribeirao Preto, Brazil
| | - Henrique Lemos
- Cancer Immunology, Inflammation and Tolerance Program, Cancer Center, Georgia Regents University, Augusta, United States of America
| | - Lei Huang
- Cancer Immunology, Inflammation and Tolerance Program, Cancer Center, Georgia Regents University, Augusta, United States of America
| | - Marcela Davoli-Ferreira
- Department of Pharmacology, University of São Paulo at Ribeirão Preto Medical School, Ribeirao Preto, Brazil
| | - Danielle S Santana-Coelho
- Department of Pharmacology, University of Texas Health Science Center at San Antonio and Audie L. Murphy VA Hospital, San Antonio, United States of America
| | - Morena B Sant'Anna
- Department of Pharmacology, University of São Paulo at Ribeirão Preto Medical School, Ribeirao Preto, Brazil
| | - Ricardo Kusuda
- Department of Pharmacology, University of São Paulo at Ribeirão Preto Medical School, Ribeirao Preto, Brazil
| | - Jhimmy Talbot
- Department of Pharmacology, University of São Paulo at Ribeirão Preto Medical School, Ribeirao Preto, Brazil
| | - Gabriela Pacholczyk
- Cancer Immunology, Inflammation and Tolerance Program, Cancer Center, Georgia Regents University, Augusta, United States of America
| | - Gabriela A Buqui
- NPPNS, Department of Physic and Chemistry, School of Pharmaceutical Sciences of Ribeirão Preto, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Norberto Lopes
- NPPNS, Department of Physic and Chemistry, School of Pharmaceutical Sciences of Ribeirão Preto, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Jose C Alves-Filho
- Department of Pharmacology, University of São Paulo at Ribeirão Preto Medical School, Ribeirao Preto, Brazil
| | - Ricardo M Leão
- Graduate Program in Basic and Applied Immunology Ribeirao Preto Medical Sch, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Jason C O'Connor
- Department of Pharmacolog, University of Texas Health Science Center at San Antonio and Audie L. Murphy VA Hospital, San Antonio, United States of America
| | - Fernando Q Cunha
- Department of Pharmacology, University of São Paulo at Ribeirão Preto Medical School, Ribeirao Preto, Brazil
| | - Andrew Mellor
- Cancer Immunology, Inflammation and Tolerance Program, Cancer Center, Georgia Regents University, Augusta, United States of America
| | - Thiago Cunha
- Department of Pharmacology, University of São Paulo at Ribeirão Preto Medical School, Ribeirao Preto, Brazil
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Puls ML, Silva RL, Fernandes PA, Leite LAC, Fabbron GG, Cavalcante JN, Macedo MCMA. BLINATUMOMAB NA LEUCEMIA LINFOIDE AGUDA-B EM CONTEXTO DE PÓS-TRANSPLANTE DE CÉLULAS TRONCO HEMATOPOIÉTICAS: EXPERIÊNCIA DE DOIS SERVIÇOS DE REFERÊNCIA. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Puls ML, Fernandes PA, Leite LAC, Fabbron GG, Cavalcante JN, Macedo MCMA, Silva RL. PNEUMONIA POR CUPRIAVIDUS PAUCULUS EM PACIENTE IMUNOCOMPROMETIDO: DESCRIÇÃO DE CASO RARO. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Gaspardi AC, Silva RL, Lima JLC, Fujita-Neto FG. RELATO DE CASO: INVESTIGAÇÃO IMUNO-HEMATOLÓGICA EM PACIENTE ALOIMUNIZADA DURANTE TRANSFUSÕES DE PLAQUETAS CONTRA ANTÍGENOS DOS SISTEMAS RH E JK. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Costa FV, Cordeiro MEC, Antunes MC, Silva RL. TRATAMENTO DE HEMARTROSES EM PACIENTES HEMOFÍLICOS GRAVES. Hematol Transfus Cell Ther 2021. [DOI: 10.1016/j.htct.2021.10.394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Garces CER, Vieira AS, Almeida CHS, Nasser LM, Leite LAC, Fernandes PA, Silva RL, Macedo MCA. DESAFIO DIAGNÓSTICO - LINFOMA NÃO HODGKIN INTRAVASCULAR DE SISTEMA NERVOSO CENTRAL: RELATO DE CASO. Hematol Transfus Cell Ther 2021. [DOI: 10.1016/j.htct.2021.10.119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Silva RC, Silva RL, Pereira AR. Magnus-force induced skyrmion-antiskyrmion coupling in inhomogeneous racetrack. J Phys Condens Matter 2021; 33:105802. [PMID: 33296891 DOI: 10.1088/1361-648x/abd1fa] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this paper we investigate a magnetic racetrack consisting of a junction of three materials with different properties. Indeed, this magnetic system is composed by two distinct regions (racetracks) connected by a thin interface: the first region (termed sector 1) has isotropic in-plane magnetic chirality and supports skyrmion (S) excitations while the second (sector 3) has anisotropic chirality and consequently supports antiskyrmions (A). The interface, which would be a third region (sector 2, connecting sectors 1 and 3) located in the central part of the racetrack, is an easy-axis Heisenberg ferromagnetic material. The topological structures S and A are put in motion by applying a spin-polarized current. Under certain conditions, we show that the skyrmion and the antiskyrmion created in their respective sectors are simultaneously impelled to the interface (due to the Magnus force) to apparently become a unique object (a skyrmion-antiskyrmion pair or SAP). After glued by sector 2, the skyrmion and the antiskyrmion move together (as a SAP) along the direction of the applied current. It is also shown that such an engineered racetrack can support a sequence of several SAP structures in motion, forming a current.
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Affiliation(s)
- R C Silva
- Departamento de Ciências Naturais, Universidade Federal do Espírito Santo, Rodovia Governador Mário Covas, Km 60, Litorâneo, São Mateus, ES, 29932-540, Brazil
| | - R L Silva
- Departamento de Ciências Naturais, Universidade Federal do Espírito Santo, Rodovia Governador Mário Covas, Km 60, Litorâneo, São Mateus, ES, 29932-540, Brazil
| | - A R Pereira
- Departamento de Física, Universidade Federal de Viçosa, Av. Peter Henry Rolfs, s/n, Campus Universitário, Viçosa, MG, 36570-900, Brazil
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Silva RL, Figueira AA, Silva MM, Dias TS, Machado LS, Soares NM, Nascimento ER, Pereira VLA. Detection of Mycoplasma Synoviae and Other Pathogens in Laying Hens with Respiratory Signs in the Rearing and Production Phases. Braz J Poult Sci 2021. [DOI: 10.1590/1806-9061-2020-1318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- RL Silva
- Universidade Federal Fluminense, Brazil
| | | | - MM Silva
- Universidade Federal Fluminense, Brazil
| | - TS Dias
- Universidade Federal Fluminense, Brazil
| | - LS Machado
- Universidade Federal Fluminense, Brazil; Universidade Federal Fluminense, Brazil
| | | | - ER Nascimento
- Universidade Federal Fluminense, Brazil; Universidade Federal Fluminense, Brazil
| | - VLA Pereira
- Universidade Federal Fluminense, Brazil; Universidade Federal Fluminense, Brazil
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Zanata GC, Pinto LG, da Silva NR, Lopes AHP, de Oliveira FFB, Schivo IRS, Cunha FQ, McNaughton P, Cunha TM, Silva RL. Blockade of bradykinin receptors or angiotensin II type 2 receptor prevents paclitaxel-associated acute pain syndrome in mice. Eur J Pain 2021; 25:189-198. [PMID: 32965065 DOI: 10.1002/ejp.1660] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 06/30/2020] [Accepted: 09/07/2020] [Indexed: 12/18/2022]
Abstract
BACKGROUND Paclitaxel (PCX) is the first-line choice for the treatment of several types of cancer, including breast, ovarian, and lung cancers. However, patients who receive even a single dose with PCX commonly develop mechanical and cold allodynia, a symptom known as PCX-associated acute pain syndrome (P-APS). Here, we assessed possible involvement of kinin-kallikrein and renin-angiotensin systems in P-APS in mice. METHODS Male mice C57Bl/6 wild type (WT) and knockouts for bradykinin receptors, B1 (B1-/- ) and B2 (B2-/- ), were used. Mechanical and cold allodynia were evaluated by using von Frey filaments and acetone test, respectively. P-APS was induced by administration of PCX 4 mg/kg, i.v.. ACE inhibitors (captopril and enalapril), antagonists for angiotensin II type 1 (losartan) and type 2 ([AT2R]; PD123319 and EMA 401) receptors were administrated prior the treatment with PCX. RT-PCR was used to analyse the expression of mRNA for B1, B2 and AT2R receptors. RESULTS Administration of PCX in B1-/- and B2-/- mice induced lower mechanical and cold allodynia compared to the WT. However, the pre-treatment with ACE inhibitors reduced the development of mechanical and cold allodynia in P-APS. Surprisingly, we found that mice pre-treatment with the PD123319 or EMA401, but not losartan, prevented the development of mechanical and cold allodynia induced by PCX. CONCLUSION Our results demonstrated the involvement of bradykinin receptors B1 and B2 as well as AT2R in the induction of P-APS in mice, and suggest the use of AT2R antagonists as a potential therapy for the prevention of P-APS in humans. SIGNIFICANCE Kinin-kallikrein and renin-angiotensin systems, through B1, B2 and AT2 receptors, potentiates paclitaxel-associated acute pain syndrome (P-APS) in mice. Antagonists for AT2R are potential alternatives to prevent P-APS.
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Affiliation(s)
- Graziele C Zanata
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Brazil
- Barão de Maua University Center, Ribeirão Preto, Brazil
| | - Larissa G Pinto
- Wolfson Centre for Age-Related Diseases, King's College London, London, UK
| | - Nicole R da Silva
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Brazil
| | - Alexandre H P Lopes
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Brazil
| | - Francisco F B de Oliveira
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceara, Fortaleza, Brazil
| | - Ieda R S Schivo
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Brazil
| | - Fernando Q Cunha
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Brazil
| | - Peter McNaughton
- Wolfson Centre for Age-Related Diseases, King's College London, London, UK
| | - Thiago M Cunha
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Brazil
| | - Rangel L Silva
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Brazil
- Department of Biochemistry and Immunology, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Brazil
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Lopes AH, Silva RL, Fonseca MD, Gomes FI, Maganin AG, Ribeiro LS, Marques LMM, Cunha FQ, Alves-Filho JC, Zamboni DS, Lopes NP, Franklin BS, Gombault A, Ramalho FS, Quesniaux VFJ, Couillin I, Ryffel B, Cunha TM. Molecular basis of carrageenan-induced cytokines production in macrophages. Cell Commun Signal 2020; 18:141. [PMID: 32894139 PMCID: PMC7487827 DOI: 10.1186/s12964-020-00621-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 07/02/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Low molecular weight carrageenan (Cg) is a seaweed-derived sulfated polysaccharide widely used as inflammatory stimulus in preclinical studies. However, the molecular mechanisms of Cg-induced inflammation are not fully elucidated. The present study aimed to investigate the molecular basis involved in Cg-induced macrophages activation and cytokines production. METHODS Primary culture of mouse peritoneal macrophages were stimulated with Kappa Cg. The supernatant and cell lysate were used for ELISA, western blotting, immunofluorescence. Cg-induced mouse colitis was also developed. RESULTS Here we show that Cg activates peritoneal macrophages to produce pro-inflammatory cytokines such as TNF and IL-1β. While Cg-induced TNF production/secretion depends on TLR4/MyD88 signaling, the production of pro-IL-1β relies on TLR4/TRIF/SYK/reactive oxygen species (ROS) signaling pathway. The maturation of pro-IL1β into IL-1β is dependent on canonical NLRP3 inflammasome activation via Pannexin-1/P2X7/K+ efflux signaling. In vivo, Cg-induced colitis was reduced in mice in the absence of NLRP3 inflammasome components. CONCLUSIONS In conclusion, we unravel a critical role of the NLRP3 inflammasome in Cg-induced pro-inflammatory cytokines production and colitis, which is an important discovery on the pro-inflammatory properties of this sulfated polysaccharide for pre-clinical studies. Video abstract Carrageenan (Cg) is one the most used flogistic stimulus in preclinical studies. Nevertheless, the molecular basis of Cg-induced inflammation is not totally elucidated. Herein, Lopes et al. unraveled the molecular basis for Cg-induced macrophages production of biological active IL-1β. The Cg-stimulated macrophages produces pro-IL-1β depends on TLR4/TRIF/Syk/ROS, whereas its processing into mature IL-1β is dependent on the canonical NLRP3 inflammasome.
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Affiliation(s)
- Alexandre H. Lopes
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Center for Research in Inflammatory Diseases (CRID)Av. Bandeirantes 3900, 14049-900, Ribeirão Preto, SP Brazil
| | - Rangel L. Silva
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Center for Research in Inflammatory Diseases (CRID)Av. Bandeirantes 3900, 14049-900, Ribeirão Preto, SP Brazil
| | - Miriam D. Fonseca
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Center for Research in Inflammatory Diseases (CRID)Av. Bandeirantes 3900, 14049-900, Ribeirão Preto, SP Brazil
| | - Francisco I. Gomes
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Center for Research in Inflammatory Diseases (CRID)Av. Bandeirantes 3900, 14049-900, Ribeirão Preto, SP Brazil
| | - Alexandre G. Maganin
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Center for Research in Inflammatory Diseases (CRID)Av. Bandeirantes 3900, 14049-900, Ribeirão Preto, SP Brazil
| | - Lucas S. Ribeiro
- Institute of Innate Immunity, University Hospitals, University of Bonn, 53127 Bonn, Germany
| | | | - Fernando Q. Cunha
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Center for Research in Inflammatory Diseases (CRID)Av. Bandeirantes 3900, 14049-900, Ribeirão Preto, SP Brazil
| | - Jose C. Alves-Filho
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Center for Research in Inflammatory Diseases (CRID)Av. Bandeirantes 3900, 14049-900, Ribeirão Preto, SP Brazil
| | - Dario S. Zamboni
- Department of Cellular and Molecular Biology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP Brazil
| | - Norberto P. Lopes
- Department of Physics and Chemistry, University of São Paulo, Ribeirão Preto, SP Brazil
| | - Bernardo S. Franklin
- Institute of Innate Immunity, University Hospitals, University of Bonn, 53127 Bonn, Germany
| | - Aurélie Gombault
- University of Orleans and CNRS, UMR7355 Experimental and Molecular Immunology, Orleans, France
| | - Fernando Silva Ramalho
- Department of Pathology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP Brazil
| | - Valerie F. J. Quesniaux
- University of Orleans and CNRS, UMR7355 Experimental and Molecular Immunology, Orleans, France
| | - Isabelle Couillin
- University of Orleans and CNRS, UMR7355 Experimental and Molecular Immunology, Orleans, France
| | - Bernhard Ryffel
- University of Orleans and CNRS, UMR7355 Experimental and Molecular Immunology, Orleans, France
| | - Thiago M. Cunha
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Center for Research in Inflammatory Diseases (CRID)Av. Bandeirantes 3900, 14049-900, Ribeirão Preto, SP Brazil
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13
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Rodrigues IBBE, Silva RL, Menezes J, Machado SCA, Rodrigues DP, Pomba C, Abreu DLC, Nascimento ER, Aquino MHC, Pereira VLA. High Prevalence of Multidrug-Resistant Nontyphoidal Salmonella Recovered from Broiler Chickens and Chicken Carcasses in Brazil. Braz J Poult Sci 2020. [DOI: 10.1590/1806-9061-2019-1206] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | - RL Silva
- Universidade Federal Fluminense, Brazil
| | | | | | | | - C Pomba
- Universidade de Lisboa, Portugal
| | - DLC Abreu
- Universidade Federal Fluminense, Brazil
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14
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Ali Santoro MC, Anagnostakis MJ, Boshkova T, Camacho A, Iljadica MCF, Collins SM, Perez RD, Delgado JU, Đurašavić M, Duch MA, Elvira VH, Gomes RS, Gudelis A, Gurau D, Hurtado Bermudez S, Idoeta R, Jevremović A, Kandić A, Korun M, Karfopolous K, Laubenstein M, Long S, Margineanu RM, Mitsios I, Mulas D, Nikolić JK, Pantelica A, Medina VP, Pibida L, Potiriadis C, Silva RL, Siri S, Šešlak B, Verheyen L, Vodenik B, Vukanac I, Wiedner H, Zorko B. Determining the probability of locating peaks using computerized peak-location methods in gamma-ray spectra as a function of the relative peak-area uncertainty. Appl Radiat Isot 2019; 155:108920. [PMID: 31622844 DOI: 10.1016/j.apradiso.2019.108920] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 09/18/2019] [Accepted: 10/02/2019] [Indexed: 11/26/2022]
Abstract
The probabilities of locating peaks with a high relative peak-area uncertainty were determined empirically with nine types of peak-location software used in laboratories engaged in gamma-ray spectrometry measurements. It was found that it is not possible to locate peaks with a probability of 0.95, when they have a relative peak-area uncertainty in excess of 50%. Locating peaks at these relatively high peak-area uncertainties with a probability greater than 0.95 is only possible in the library-driven mode, where the peak positions are supposed a-priori. The deficiencies of the library-driven mode and the possibilities to improve the probabilities of locating peaks are briefly discussed.
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Affiliation(s)
- M C Ali Santoro
- División Radioquimica Básica y Datos Nucleares, Departamento Quimica Nuclear, Comisión Nacional de Energia Atómica, Argentina
| | - M J Anagnostakis
- Nuclear Engineering Department, National Technical University of Athens, 15780, Athens, Greece
| | - T Boshkova
- Faculty of Physics, St. Kliment Ohridsky University of Sofia, 5 James Bourchier Blvd., 1164 Sofia, Bulgaria
| | - A Camacho
- Universitat Politècnica de Catalunya (UPC), Institut de Tecniques Energetiques, Diagonal 647, 08028, Barcelona, Spain
| | - M C Fornaciari Iljadica
- División Radioquimica Básica y Datos Nucleares, Departamento Quimica Nuclear, Comisión Nacional de Energia Atómica, Argentina
| | - S M Collins
- National Physical Laboratory, Teddington, Middlesex, TW11 0LW, UK
| | - R Diaz Perez
- CITIUS, Universidad de Sevilla, Avda. Reina Mercedes 4B, 41012, Sevilla, Spain
| | - J U Delgado
- Laboratório Nacional de Metrologia das Radiações Ionizantes - LNMRI, Instituto de Radioproteção e Dosimetria - IRD / CNEN, Brasilia, Brazil
| | - M Đurašavić
- Vinča Institute of Nuclear Sciences, Laboratory for Nuclear and Plasma Physics, University of Belgrade, Belgrade, Serbia
| | - M A Duch
- Universitat Politècnica de Catalunya (UPC), Institut de Tecniques Energetiques, Diagonal 647, 08028, Barcelona, Spain
| | - V H Elvira
- Laboratorio de Metrologia de Radiaciones Ionizantes, Avda. Complutense 40, 28040, Madrid, Spain
| | - R S Gomes
- Laboratório Nacional de Metrologia das Radiações Ionizantes - LNMRI, Instituto de Radioproteção e Dosimetria - IRD / CNEN, Brasilia, Brazil
| | - A Gudelis
- Center for Physical Sciences End Technology, Savanoriu Ave. 231, Vilnus, Lithuania
| | - D Gurau
- Horia Hulubei National Institute for Research and Development in Physics and Nuclear Engineering (IFIN_HH), 30 Reactorului St., POB MG-6, RO-0077125, Bucharest-Magurele, Romania
| | - S Hurtado Bermudez
- CITIUS, Universidad de Sevilla, Avda. Reina Mercedes 4B, 41012, Sevilla, Spain
| | - R Idoeta
- Esquela de Ingenieria de Bilbao, Universidad del Pais Vasco UPV/EHU, Plaza Ingeniero Torres Quevedo 1, 48013, Bilbao, Spain
| | - A Jevremović
- Vinča Institute of Nuclear Sciences, Laboratory for Nuclear and Plasma Physics, University of Belgrade, Belgrade, Serbia
| | - A Kandić
- Vinča Institute of Nuclear Sciences, Laboratory for Nuclear and Plasma Physics, University of Belgrade, Belgrade, Serbia
| | - M Korun
- "Jožef Stefan" Institute, Jamova Cesta 39, 1000, Ljubljana, Slovenia.
| | - K Karfopolous
- Greek Atomic Energy Commission, Agia Paraskevi, Athens, Greece
| | - M Laubenstein
- Laboratori Nazionali del Gran Sasso, Instituto Nazionale di Fisica Nucleare, Via G. Acitelli 22, I-67100, Assergi (AQ), Italy
| | - S Long
- Australian Radiation Protection and Nuclear Safety Agency, 619 Lower Plenty Road, Yallambie, 3085, Australia
| | - R M Margineanu
- Horia Hulubei National Institute for Research and Development in Physics and Nuclear Engineering (IFIN_HH), 30 Reactorului St., POB MG-6, RO-0077125, Bucharest-Magurele, Romania
| | - I Mitsios
- Nuclear Engineering Department, National Technical University of Athens, 15780, Athens, Greece
| | - D Mulas
- Universitat Politècnica de Catalunya (UPC), Institut de Tecniques Energetiques, Diagonal 647, 08028, Barcelona, Spain
| | - J K Nikolić
- Vinča Institute of Nuclear Sciences, Laboratory for Radiation and Environmental Protection, University of Belgrade, Belgrade, Serbia
| | - A Pantelica
- Horia Hulubei National Institute for Research and Development in Physics and Nuclear Engineering (IFIN_HH), 30 Reactorului St., POB MG-6, RO-0077125, Bucharest-Magurele, Romania
| | - V Peyres Medina
- Laboratorio de Metrologia de Radiaciones Ionizantes, Avda. Complutense 40, 28040, Madrid, Spain
| | - L Pibida
- National Institute of Standards and Technology, 100 Bureau DR, MS8462, Gaithersburg, MD, 20899-8462, USA
| | - C Potiriadis
- Greek Atomic Energy Commission, Agia Paraskevi, Athens, Greece
| | - R L Silva
- Laboratório Nacional de Metrologia das Radiações Ionizantes - LNMRI, Instituto de Radioproteção e Dosimetria - IRD / CNEN, Brasilia, Brazil
| | - S Siri
- División Radioquimica Básica y Datos Nucleares, Departamento Quimica Nuclear, Comisión Nacional de Energia Atómica, Argentina
| | - B Šešlak
- Vinča Institute of Nuclear Sciences, Laboratory for Nuclear and Plasma Physics, University of Belgrade, Belgrade, Serbia
| | - L Verheyen
- Belgian Nuclear Research Centre, Boeretang 200, BE-2400, Mol, Belgium
| | - B Vodenik
- "Jožef Stefan" Institute, Jamova Cesta 39, 1000, Ljubljana, Slovenia
| | - I Vukanac
- Vinča Institute of Nuclear Sciences, Laboratory for Radiation and Environmental Protection, University of Belgrade, Belgrade, Serbia
| | - H Wiedner
- BEV - Bundesamt für Eich- und Vermessungswesen, Physikalisch-technischer Prüfdienst, Arltgasse 35, 1160, Wien, Austria
| | - B Zorko
- "Jožef Stefan" Institute, Jamova Cesta 39, 1000, Ljubljana, Slovenia
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15
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Abstract
Topological objects interacting with lattice defects is an important topic in condensed matter physics. In this paper, we would like to explore the ballistic trajectory of an antiferromagnetic skyrmion in a racetrack to study processes such as collisions of skyrmions and holes in the magnetic sample. The skyrmion is impelled against the hole-obstacle by means of a spin polarized current. Depending on the skyrmion velocity (associated to the strength of the applied current) and the type of collision (frontal or lateral), it will be captured, scattered or completely destroyed by the hole. In some cases, this obstacle can shift the skyrmion center from a straight line to another one, and it appears as an effective way of manipulating skyrmion trajectories and dynamics.
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Affiliation(s)
- R L Silva
- Departamento de Ciências Naturais, Universidade Federal do Espírito Santo, São Mateus, ES, 29932-540, Brazil
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16
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Silva RL, Silveira GT, Wanderlei CW, Cecilio NT, Maganin AGM, Franchin M, Marques LMM, Lopes NP, Crippa JA, Guimarães FS, Alves-Filho JCF, Cunha FQ, Cunha TM. DMH-CBD, a cannabidiol analog with reduced cytotoxicity, inhibits TNF production by targeting NF-kB activity dependent on A 2A receptor. Toxicol Appl Pharmacol 2019; 368:63-71. [PMID: 30796934 DOI: 10.1016/j.taap.2019.02.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 02/16/2019] [Accepted: 02/19/2019] [Indexed: 12/26/2022]
Abstract
Cannabidiol (CBD) is a natural compound with psychoactive therapeutic properties well described. Conversely, the immunological effects of CBD are still poorly explored. In this study, the potential anti-inflammatory effects and underlying mechanisms of CBD and its analog Dimethyl-Heptyl-Cannabidiol (DMH-CBD) were investigated using RAW 264.7 macrophages. CBD and DMH-CBD suppressed LPS-induced TNF production and NF-kB activity in a concentration-dependent manner. Both compounds reduced the NF-kB activity in a μM concentration range: CBD (IC50 = 15 μM) and DMH-CBD (IC50 = 38 μM). However, the concentrations of CBD that mediated NF-kB inhibition were similar to those that cause cytotoxicity (LC50 = 58 μM). Differently, DMH-CBD inhibited the NF-kB activation without cytotoxic effects at the same concentrations, although it provokes cytotoxicity at long-term exposure. The inhibitory action of the DMH-CBD on NF-kB activity was not related to the reduction in IkBα degradation or either p65 (NF-kB) translocation to the nucleus, although it decreased p38 MAP kinase phosphorylation. Additionally, 8-(3-Chlorostyryl) caffeine (CSC), an A2A antagonist, reversed the effect of DMH-CBD on NF-kB activity in a concentration-dependent manner. Collectively, our results demonstrated that CBD reduces NF-kB activity at concentrations intimately associated with those that cause cell death, whereas DMH-CBD decreases NF-kB activity at non-toxic concentrations in an A2A receptor dependent-manner.
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Affiliation(s)
- Rangel L Silva
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Brazil
| | - Gabriela T Silveira
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Brazil
| | - Carlos W Wanderlei
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Brazil; Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceara, Fortaleza, Brazil
| | - Nerry T Cecilio
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Brazil
| | - Alexandre G M Maganin
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Brazil
| | - Marcelo Franchin
- Piracicaba Dental School, University of Campinas, Piracicaba 13414-903, SP, Brazil
| | - Lucas M M Marques
- Department of Physical Chemistry, Faculty of Pharmaceutical Sciences of Ribeirao Preto, University of São Paulo, Ribeirao Preto, Brazil
| | - Norberto P Lopes
- Department of Physical Chemistry, Faculty of Pharmaceutical Sciences of Ribeirao Preto, University of São Paulo, Ribeirao Preto, Brazil
| | - José A Crippa
- Department of Neurosciences and Behavior, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Brazil
| | - Francisco S Guimarães
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Brazil
| | - José C F Alves-Filho
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Brazil
| | - Fernando Q Cunha
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Brazil
| | - Thiago M Cunha
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Brazil.
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17
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Campa CC, Silva RL, Margaria JP, Pirali T, Mattos MS, Kraemer LR, Reis DC, Grosa G, Copperi F, Dalmarco EM, Lima-Júnior RCP, Aprile S, Sala V, Dal Bello F, Prado DS, Alves-Filho JC, Medana C, Cassali GD, Tron GC, Teixeira MM, Ciraolo E, Russo RC, Hirsch E. Inhalation of the prodrug PI3K inhibitor CL27c improves lung function in asthma and fibrosis. Nat Commun 2018; 9:5232. [PMID: 30542075 PMCID: PMC6290777 DOI: 10.1038/s41467-018-07698-6] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 11/14/2018] [Indexed: 12/11/2022] Open
Abstract
PI3K activation plays a central role in the development of pulmonary inflammation and tissue remodeling. PI3K inhibitors may thus offer an improved therapeutic opportunity to treat non-resolving lung inflammation but their action is limited by unwanted on-target systemic toxicity. Here we present CL27c, a prodrug pan-PI3K inhibitor designed for local therapy, and investigate whether inhaled CL27c is effective in asthma and pulmonary fibrosis. Mice inhaling CL27c show reduced insulin-evoked Akt phosphorylation in lungs, but no change in other tissues and no increase in blood glycaemia, in line with a local action. In murine models of acute or glucocorticoid-resistant neutrophilic asthma, inhaled CL27c reduces inflammation and improves lung function. Finally, inhaled CL27c administered in a therapeutic setting protects from bleomycin-induced lung fibrosis, ultimately leading to significantly improved survival. Therefore, local delivery of a pan-PI3K inhibitor prodrug reduces systemic on-target side effects but effectively treats asthma and irreversible pulmonary fibrosis. Activation of PI3K plays a role in pulmonary inflammation. Here, the authors develop a drug inhibitor of PI3K, and show that it inhibits lung inflammation and damage in mouse models of asthma and lung fibrosis.
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Affiliation(s)
- Carlo C Campa
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Via Nizza 52, 10126, Torino, Italy
| | - Rangel L Silva
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Via Nizza 52, 10126, Torino, Italy.,Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes 3900, 14049-900, Ribeirao Preto, Brazil
| | - Jean P Margaria
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Via Nizza 52, 10126, Torino, Italy
| | - Tracey Pirali
- Dipartimento di Scienze del Farmaco, Università degli Studi del Piemonte Orientale "A. Avogadro", Largo Donegani 2, 28100, Novara, Italy
| | - Matheus S Mattos
- Laboratory of Pulmonary Immunology and Mechanics, Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais/UFMG, Avenida Antonio Carlos 6627, Belo Horizonte, 31270-901, Brazil
| | - Lucas R Kraemer
- Laboratory of Pulmonary Immunology and Mechanics, Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais/UFMG, Avenida Antonio Carlos 6627, Belo Horizonte, 31270-901, Brazil
| | - Diego C Reis
- Laboratory of Pulmonary Immunology and Mechanics, Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais/UFMG, Avenida Antonio Carlos 6627, Belo Horizonte, 31270-901, Brazil.,Laboratory of Comparative Pathology, Department of General Pathology Institute of Biological Sciences, Universidade Federal de Minas Gerais/UFMG, Avenida Antonio Carlos 6627, Belo Horizonte, 31270-901, Brazil
| | - Giorgio Grosa
- Dipartimento di Scienze del Farmaco, Università degli Studi del Piemonte Orientale "A. Avogadro", Largo Donegani 2, 28100, Novara, Italy
| | - Francesca Copperi
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Via Nizza 52, 10126, Torino, Italy
| | - Eduardo M Dalmarco
- Department of Clinical Analysis, Universidade Federal de Santa Catarina/UFSC, Rua Delfino Conti, S/N, Florianopolis, 88040-370, Brazil
| | - Roberto C P Lima-Júnior
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Via Nizza 52, 10126, Torino, Italy.,Laboratory of Pharmacology of Inflammation and Cancer, Department of Physiology and Pharmacology, Universidade Federal do Ceará/UFC, Rua Cel Nunes de Melo 1127, Fortaleza, 60430-270, Brazil
| | - Silvio Aprile
- Dipartimento di Scienze del Farmaco, Università degli Studi del Piemonte Orientale "A. Avogadro", Largo Donegani 2, 28100, Novara, Italy
| | - Valentina Sala
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Via Nizza 52, 10126, Torino, Italy
| | - Federica Dal Bello
- Department of Molecular Biotechnology and Health Sciences, Mass Spectrometry Unit, University of Torino, Via Giuria 5, 10125, Torino, Italy
| | - Douglas Silva Prado
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes 3900, 14049-900, Ribeirao Preto, Brazil
| | - Jose Carlos Alves-Filho
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes 3900, 14049-900, Ribeirao Preto, Brazil
| | - Claudio Medana
- Department of Molecular Biotechnology and Health Sciences, Mass Spectrometry Unit, University of Torino, Via Giuria 5, 10125, Torino, Italy
| | - Geovanni D Cassali
- Laboratory of Comparative Pathology, Department of General Pathology Institute of Biological Sciences, Universidade Federal de Minas Gerais/UFMG, Avenida Antonio Carlos 6627, Belo Horizonte, 31270-901, Brazil
| | - Gian Cesare Tron
- Dipartimento di Scienze del Farmaco, Università degli Studi del Piemonte Orientale "A. Avogadro", largo Donegani 2, 28100, Novara, Italy.,Kither Biotech S.r.l., Via Nizza 52, 10126, Torino, Italy
| | - Mauro M Teixeira
- Laboratory of Immunopharmacology, Department of Biochemistry and Immunology, Institute of Biological Sciences, Universidade Federal de Minas Gerais/UFMG, Avenida Antonio Carlos 6627, Belo Horizonte, 31270-901, Brazil
| | - Elisa Ciraolo
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Via Nizza 52, 10126, Torino, Italy. .,Max Delbrück Center for Molecular Medicine, 13125, Berlin, Germany.
| | - Remo C Russo
- Laboratory of Pulmonary Immunology and Mechanics, Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais/UFMG, Avenida Antonio Carlos 6627, Belo Horizonte, 31270-901, Brazil.,Laboratory of Immunopharmacology, Department of Biochemistry and Immunology, Institute of Biological Sciences, Universidade Federal de Minas Gerais/UFMG, Avenida Antonio Carlos 6627, Belo Horizonte, 31270-901, Brazil
| | - Emilio Hirsch
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Via Nizza 52, 10126, Torino, Italy.,Kither Biotech S.r.l., Via Nizza 52, 10126, Torino, Italy
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18
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Wanderley CW, Colon DF, Luiz JPM, Oliveira FF, Viacava PR, Leite CA, Pereira JA, Silva CM, Silva CR, Silva RL, Speck-Hernandez CA, Mota JM, Alves-Filho JC, Lima-Júnior RC, Cunha TM, Cunha FQ. Paclitaxel reduces tumor growth by reprogramming tumor-associated macrophages to an M1- profile in a TLR4-dependent manner. Cancer Res 2018; 78:5891-5900. [DOI: 10.1158/0008-5472.can-17-3480] [Citation(s) in RCA: 151] [Impact Index Per Article: 25.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 05/23/2018] [Accepted: 06/18/2018] [Indexed: 12/18/2022]
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19
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Pirali T, Ciraolo E, Aprile S, Massarotti A, Berndt A, Griglio A, Serafini M, Mercalli V, Landoni C, Campa CC, Margaria JP, Silva RL, Grosa G, Sorba G, Williams R, Hirsch E, Tron GC. Identification of a Potent Phosphoinositide 3-Kinase Pan Inhibitor Displaying a Strategic Carboxylic Acid Group and Development of Its Prodrugs. ChemMedChem 2017; 12:1542-1554. [PMID: 28857471 PMCID: PMC5697638 DOI: 10.1002/cmdc.201700340] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 07/25/2017] [Indexed: 02/03/2023]
Abstract
Activation of the phosphoinositide 3-kinase (PI3K) pathway is a key signaling event in cancer, inflammation, and other proliferative diseases. PI3K inhibitors are already approved for some specific clinical indications, but their systemic on-target toxicity limits their larger use. In particular, whereas toxicity is tolerable in acute treatment of life-threatening diseases, this is less acceptable in chronic conditions. In the past, the strategy to overcome this drawback was to block selected isoforms mainly expressed in leukocytes, but redundancy within the PI3K family members challenges the effectiveness of this approach. On the other hand, decreasing exposure to selected target cells represents a so-far unexplored alternative to circumvent systemic toxicity. In this manuscript, we describe the generation of a library of triazolylquinolones and the development of the first prodrug pan-PI3K inhibitor.
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Affiliation(s)
- Tracey Pirali
- Dipartimento di Scienze del FarmacoUniversità degli Studi del Piemonte Orientale “A. Avogadro”Largo Donegani 228100NovaraItaly
| | - Elisa Ciraolo
- Department of Molecular Biotechnology and Health SciencesUniversity of TorinoVia Nizza 5210126TorinoItaly
| | - Silvio Aprile
- Dipartimento di Scienze del FarmacoUniversità degli Studi del Piemonte Orientale “A. Avogadro”Largo Donegani 228100NovaraItaly
| | - Alberto Massarotti
- Dipartimento di Scienze del FarmacoUniversità degli Studi del Piemonte Orientale “A. Avogadro”Largo Donegani 228100NovaraItaly
| | - Alex Berndt
- MRC Laboratory of Molecular BiologyMedical Research CouncilCambridgeCB2 0QHUK
| | - Alessia Griglio
- Dipartimento di Scienze del FarmacoUniversità degli Studi del Piemonte Orientale “A. Avogadro”Largo Donegani 228100NovaraItaly
| | - Marta Serafini
- Dipartimento di Scienze del FarmacoUniversità degli Studi del Piemonte Orientale “A. Avogadro”Largo Donegani 228100NovaraItaly
| | - Valentina Mercalli
- Dipartimento di Scienze del FarmacoUniversità degli Studi del Piemonte Orientale “A. Avogadro”Largo Donegani 228100NovaraItaly
| | - Clarissa Landoni
- Dipartimento di Scienze del FarmacoUniversità degli Studi del Piemonte Orientale “A. Avogadro”Largo Donegani 228100NovaraItaly
| | - Carlo Cosimo Campa
- Department of Molecular Biotechnology and Health SciencesUniversity of TorinoVia Nizza 5210126TorinoItaly
| | - Jean Piero Margaria
- Department of Molecular Biotechnology and Health SciencesUniversity of TorinoVia Nizza 5210126TorinoItaly
| | - Rangel L. Silva
- Department of Pharmacology, Ribeirão Preto Medical SchoolUniversity of São PauloAvenida Bandeirantes 390014049-900Ribeirão PretoBrazil
| | - Giorgio Grosa
- Dipartimento di Scienze del FarmacoUniversità degli Studi del Piemonte Orientale “A. Avogadro”Largo Donegani 228100NovaraItaly
| | - Giovanni Sorba
- Dipartimento di Scienze del FarmacoUniversità degli Studi del Piemonte Orientale “A. Avogadro”Largo Donegani 228100NovaraItaly
| | - Roger Williams
- MRC Laboratory of Molecular BiologyMedical Research CouncilCambridgeCB2 0QHUK
| | - Emilio Hirsch
- Department of Molecular Biotechnology and Health SciencesUniversity of TorinoVia Nizza 5210126TorinoItaly
- Kither Biotech S.r.l.Molecular Biotechnology CenterVia Nizza 5210126TorinoItaly
| | - Gian Cesare Tron
- Dipartimento di Scienze del FarmacoUniversità degli Studi del Piemonte Orientale “A. Avogadro”Largo Donegani 228100NovaraItaly
- Kither Biotech S.r.l.Molecular Biotechnology CenterVia Nizza 5210126TorinoItaly
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20
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Silva RL, Lopes AH, Guimarães RM, Cunha TM. CXCL1/CXCR2 signaling in pathological pain: Role in peripheral and central sensitization. Neurobiol Dis 2017; 105:109-116. [PMID: 28587921 DOI: 10.1016/j.nbd.2017.06.001] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 05/31/2017] [Accepted: 06/02/2017] [Indexed: 02/04/2023] Open
Abstract
Pathological pain conditions can be triggered after peripheral nerve injury and/or inflammation. It is associated with plasticity of nociceptive pathway in which pain is prolonged even after healing of the injured tissue. Generally combinations of analgesic drugs are not sufficient to achieve selective palliation from chronic pain, besides causing a greater number of side effects. In order to identify novel alternatives for more effective treatments, it is necessary to clarify the underlying mechanisms of pathological pain. It is well established that there are two main components in pathological pain development and maintenance: (i) primary sensory neuron sensitization (peripheral sensitization), and (ii) central sensitization. In both components cytokines and chemokines act as key mediators in pain modulation. CXCL1 is a chemokine that promote both nociceptor and central sensitization via its main receptor CXCR2, which is a promising target for novel analgesic drugs. Here, we reviewed and discussed the role of the CXCL1/CXCR2 signaling axis in pathological pain conditions triggered by either peripheral inflammation or nerve injury.
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Affiliation(s)
- Rangel L Silva
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil.
| | - Alexandre H Lopes
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Rafaela M Guimarães
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil; Graduate Program in Basic and Applied Immunology, Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Thiago M Cunha
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
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Oliveira EAS, Silva RL, Silva RC, Pereira AR. Effects of second neighbor interactions on skyrmion lattices in chiral magnets. J Phys Condens Matter 2017; 29:205801. [PMID: 28248638 DOI: 10.1088/1361-648x/aa63dd] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this paper we investigate the influences of the second neighbor interactions on a skyrmion lattice in two-dimensional chiral magnets. Such a system contains the exchange and the Dzyaloshinskii-Moriya for the spin interactions and therefore, we analyse three situations: firstly, the second neighbor interaction is present only in the exchange coupling; secondly, it is present only in the Dzyaloshinskii-Moriya coupling. Finally, the second neighbor interactions are present in both exchange and Dzyaloshinskii-Moriya couplings. We show that such effects cause important modifications to the helical and skyrmion phases when an external magnetic field is applied.
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Affiliation(s)
- E A S Oliveira
- Coordenadoria de Física, Instituto Federal do Espírito Santo, Av. Vitória, 1729- Jucutuquara, Vitória, ES, 29040-780, Brazil
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22
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Silva DF, Alves CQ, Brandão HN, David JM, David JP, Silva RL, Franchin M, Cunha TM, Martins FT, Oliveira CMA. Poligalen, a new coumarin from Polygala boliviensis, reduces the release of TNF and IL-6 independent of NF-kB downregulation. Fitoterapia 2016; 113:139-43. [PMID: 27491751 DOI: 10.1016/j.fitote.2016.07.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2016] [Revised: 07/18/2016] [Accepted: 07/31/2016] [Indexed: 12/26/2022]
Abstract
An unusually substituted coumarin, named poligalen, was isolated from a chloroform extract of the aerial parts of Polygala boliviensis. This coumarin was identified by one- and two-dimensional NMR techniques, and the structure of the compound was confirmed by X-ray diffraction. Poligalen exhibits immunomodulatory effects, reducing the levels of IL-6 and TNF after LPS stimulation in peritoneal macrophages. However, poligalen potentiates NF-kB activation.
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Affiliation(s)
- Danielle F Silva
- Departamento de Saúde, Universidade Estadual de Feira de Santana, 44036-900 Feira de Santana, BA, Brazil
| | - Clayton Q Alves
- Departamento de Exatas, Universidade Estadual de Feira de Santana, 44036-900 Feira de Santana, BA, Brazil
| | - Hugo N Brandão
- Departamento de Saúde, Universidade Estadual de Feira de Santana, 44036-900 Feira de Santana, BA, Brazil.
| | - Jorge M David
- Instituto de Química, Universidade Federal da Bahia, 40170-290 Salvador, BA, Brazil
| | - Juceni P David
- Faculdade de Farmácia, Universidade Federal da Bahia, 40170-290 Salvador, BA, Brazil
| | - Rangel L Silva
- Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, 14049-900 Ribeirão Preto, SP, Brazil
| | - Marcelo Franchin
- Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, 14049-900 Ribeirão Preto, SP, Brazil
| | - Thiago M Cunha
- Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, 14049-900 Ribeirão Preto, SP, Brazil
| | - Felipe T Martins
- Instituto de Química, Universidade Federal de Goiás, 74001-970 Goiânia, Go, Brazil
| | - Cecilia M A Oliveira
- Instituto de Química, Universidade Federal de Goiás, 74001-970 Goiânia, Go, Brazil
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23
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Silva RL, Castanheira FV, Figueiredo JG, Bassi GS, Ferreira SH, Cunha FQ, Cunha TM, Kanashiro A. Pharmacological Beta-Adrenergic Receptor Activation Attenuates Neutrophil Recruitment by a Mechanism Dependent on Nicotinic Receptor and the Spleen. Inflammation 2016; 39:1405-13. [DOI: 10.1007/s10753-016-0372-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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24
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Pinho-Ribeiro FA, Zarpelon AC, Mizokami SS, Borghi SM, Bordignon J, Silva RL, Cunha TM, Alves-Filho JC, Cunha FQ, Casagrande R, Verri WA. The citrus flavonone naringenin reduces lipopolysaccharide-induced inflammatory pain and leukocyte recruitment by inhibiting NF-κB activation. J Nutr Biochem 2016; 33:8-14. [PMID: 27260463 DOI: 10.1016/j.jnutbio.2016.03.013] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Revised: 03/17/2016] [Accepted: 03/24/2016] [Indexed: 12/25/2022]
Abstract
Lipopolysaccharide (LPS) is the major structural component of Gram-negative bacteria cell wall and a highly pro-inflammatory toxin. Naringenin is found in Citrus fruits and exhibits antioxidant and anti-inflammatory properties through inhibition of NF-κB activation but its effects in LPS-induced inflammatory pain and leukocyte recruitment were not investigated yet. We investigated the effects of naringenin in mechanical hyperalgesia, thermal hyperalgesia and leukocyte recruitment induced by intraplantar injection of LPS in mice. We found that naringenin reduced hyperalgesia to mechanical and thermal stimuli, myeloperoxidase (MPO, a neutrophil and macrophage marker) and N-acetyl-β-D-glucosaminidase (NAG, a macrophage marker) activities, oxidative stress and cytokine (TNF-α, IL-1β, IL-6, and IL-12) production in the paw skin. In the peritoneal cavity, naringenin reduced neutrophil and mononuclear cell recruitment, and abrogated MPO and NAG activity, cytokine and superoxide anion production, and lipid peroxidation. In vitro, pre-treatment with naringenin inhibited superoxide anion and cytokine (TNF-α, IL-1β, IL-6, and IL-12) production by LPS-stimulated RAW 264.7 macrophages. Finally, we demonstrated that naringenin inhibited NF-κB activation in vitro and in vivo. Therefore, naringenin is a promising compound to treat LPS-induced inflammatory pain and leukocyte recruitment.
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Affiliation(s)
- Felipe A Pinho-Ribeiro
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Rod. Celso Garcia Cid, Km 380, PR445, 86057-970, Cx., Postal 10.011, Londrina, Paraná, Brazil
| | - Ana C Zarpelon
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Rod. Celso Garcia Cid, Km 380, PR445, 86057-970, Cx., Postal 10.011, Londrina, Paraná, Brazil
| | - Sandra S Mizokami
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Rod. Celso Garcia Cid, Km 380, PR445, 86057-970, Cx., Postal 10.011, Londrina, Paraná, Brazil
| | - Sergio M Borghi
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Rod. Celso Garcia Cid, Km 380, PR445, 86057-970, Cx., Postal 10.011, Londrina, Paraná, Brazil
| | - Juliano Bordignon
- Carlos Chagas Institute/Fiocruz, Rua Professor Algacyr Munhoz Mader, 3775, 81350-010, Curitiba, Brazil
| | - Rangel L Silva
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes, 14050-490 Ribeirão Preto, São Paulo, Brazil
| | - Thiago M Cunha
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes, 14050-490 Ribeirão Preto, São Paulo, Brazil
| | - Jose C Alves-Filho
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes, 14050-490 Ribeirão Preto, São Paulo, Brazil
| | - Fernando Q Cunha
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes, 14050-490 Ribeirão Preto, São Paulo, Brazil
| | - Rubia Casagrande
- Departamento de Ciências Farmacêuticas, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Avenida Robert Koch, 60, Hospital Universitário, 86038-350 Londrina, Paraná, Brazil
| | - Waldiceu A Verri
- Departamento de Ciências Patológicas, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Rod. Celso Garcia Cid, Km 380, PR445, 86057-970, Cx., Postal 10.011, Londrina, Paraná, Brazil.
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25
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Santa-Cecília FV, Socias B, Ouidja MO, Sepulveda-Diaz JE, Acuña L, Silva RL, Michel PP, Del-Bel E, Cunha TM, Raisman-Vozari R. Doxycycline Suppresses Microglial Activation by Inhibiting the p38 MAPK and NF-kB Signaling Pathways. Neurotox Res 2016; 29:447-59. [DOI: 10.1007/s12640-015-9592-2] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Revised: 12/21/2015] [Accepted: 12/23/2015] [Indexed: 11/24/2022]
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26
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Lopes AH, Brandolini L, Aramini A, Bianchini G, Silva RL, Zaperlon AC, Verri WA, Alves-Filho JC, Cunha FQ, Teixeira MM, Allegretti M, Cunha TM. DF2755A, a novel non-competitive allosteric inhibitor of CXCR1/2, reduces inflammatory and post-operative pain. Pharmacol Res 2016; 103:69-79. [DOI: 10.1016/j.phrs.2015.11.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Revised: 11/11/2015] [Accepted: 11/13/2015] [Indexed: 02/02/2023]
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Oliveira AE, Iwahara A, Silva CJ, Cruz PAL, Poledna R, Silva RL, Laranjeira AS, Delgado JU, Tauhata L, Loureiro JS, Toledo BC, Braghirolli AMS, Andrade EAL, Silva JL, Hernandes HOK, Valente ES, Dalle HM, Almeida VM, Silva TG, Fragoso MCF, Oliveira ML, Nascimento ESS, Oliveira EM, Herrerias R, Souza AA, Bambalas E, Bruzinga WA. Traceability from governmental producers of radiopharmaceuticals in measuring (18)F in Brazil. Appl Radiat Isot 2015; 109:236-241. [PMID: 26688362 DOI: 10.1016/j.apradiso.2015.11.051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Accepted: 11/20/2015] [Indexed: 11/16/2022]
Abstract
Since the inception of its proficiency test program to evaluate radionuclide measurement in hospitals and clinics, the National Metrology Laboratory of Ionizing Radiation-LNMRI, that represents Brazilian National Metrology Institute (NMI) for ionizing radiation has expanded its measurement and calibration capability. Requirements from the National Health Surveillance Agency from Ministry of Health (ANVISA), to producers of radiopharmaceuticals provided an opportunity to improve the full traceability chain to the highest level. Fluorodeoxyglucose (FDG-(18)F) is the only radiopharmaceutical simultaneously produced by all Brazilian radiopharmaceutical production centers (RPCs). By running this proficiency test, LNMRI began to provide them with the required traceability. For evaluation, the ratio of RPC to reference value results and ISO/IEC17043:2010 criteria were used. The reference value established as calibration factor on the secondary standard ionization chamber was obtained from three absolute measurements systems, and routinely confirmed in each round of proficiency test by CIEMAT/NIST liquid scintillation counting. The γ-emitting impurities were checked using a High-Purity Germanium (HPGe) detector. The results show that Brazilian RPCs are in accordance with (accuracy within ±10%) the Brazilian standard for evaluation of measurements with radionuclide calibrators (CNEN NN 3.05., 2013). Nevertheless, the RPCs should improve the methodology of uncertainty estimates, essential when using the statistical criteria of ISO/IEC 17043 standard, in addition to improving accuracy to levels consistent with their position in the national traceability chain.
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Affiliation(s)
- A E Oliveira
- Laboratório Nacional de Metrologia das Radiações Ionizantes (LNMRI)/Instituto de Radioproteção e Dosimetria (IRD)/Comissão Nacional de Energia Nuclear (CNEN), Av. Salvador Allende s/n, 22780-160 Recreio CEP Rio de Janeiro, Brazil.
| | - A Iwahara
- Laboratório Nacional de Metrologia das Radiações Ionizantes (LNMRI)/Instituto de Radioproteção e Dosimetria (IRD)/Comissão Nacional de Energia Nuclear (CNEN), Av. Salvador Allende s/n, 22780-160 Recreio CEP Rio de Janeiro, Brazil
| | - C J Silva
- Laboratório Nacional de Metrologia das Radiações Ionizantes (LNMRI)/Instituto de Radioproteção e Dosimetria (IRD)/Comissão Nacional de Energia Nuclear (CNEN), Av. Salvador Allende s/n, 22780-160 Recreio CEP Rio de Janeiro, Brazil
| | - P A L Cruz
- Laboratório Nacional de Metrologia das Radiações Ionizantes (LNMRI)/Instituto de Radioproteção e Dosimetria (IRD)/Comissão Nacional de Energia Nuclear (CNEN), Av. Salvador Allende s/n, 22780-160 Recreio CEP Rio de Janeiro, Brazil
| | - R Poledna
- Laboratório Nacional de Metrologia das Radiações Ionizantes (LNMRI)/Instituto de Radioproteção e Dosimetria (IRD)/Comissão Nacional de Energia Nuclear (CNEN), Av. Salvador Allende s/n, 22780-160 Recreio CEP Rio de Janeiro, Brazil
| | - R L Silva
- Laboratório Nacional de Metrologia das Radiações Ionizantes (LNMRI)/Instituto de Radioproteção e Dosimetria (IRD)/Comissão Nacional de Energia Nuclear (CNEN), Av. Salvador Allende s/n, 22780-160 Recreio CEP Rio de Janeiro, Brazil
| | - A S Laranjeira
- Laboratório Nacional de Metrologia das Radiações Ionizantes (LNMRI)/Instituto de Radioproteção e Dosimetria (IRD)/Comissão Nacional de Energia Nuclear (CNEN), Av. Salvador Allende s/n, 22780-160 Recreio CEP Rio de Janeiro, Brazil
| | - J U Delgado
- Laboratório Nacional de Metrologia das Radiações Ionizantes (LNMRI)/Instituto de Radioproteção e Dosimetria (IRD)/Comissão Nacional de Energia Nuclear (CNEN), Av. Salvador Allende s/n, 22780-160 Recreio CEP Rio de Janeiro, Brazil
| | - L Tauhata
- Laboratório Nacional de Metrologia das Radiações Ionizantes (LNMRI)/Instituto de Radioproteção e Dosimetria (IRD)/Comissão Nacional de Energia Nuclear (CNEN), Av. Salvador Allende s/n, 22780-160 Recreio CEP Rio de Janeiro, Brazil
| | - J S Loureiro
- Laboratório Nacional de Metrologia das Radiações Ionizantes (LNMRI)/Instituto de Radioproteção e Dosimetria (IRD)/Comissão Nacional de Energia Nuclear (CNEN), Av. Salvador Allende s/n, 22780-160 Recreio CEP Rio de Janeiro, Brazil
| | - B C Toledo
- Laboratório Nacional de Metrologia das Radiações Ionizantes (LNMRI)/Instituto de Radioproteção e Dosimetria (IRD)/Comissão Nacional de Energia Nuclear (CNEN), Av. Salvador Allende s/n, 22780-160 Recreio CEP Rio de Janeiro, Brazil
| | - A M S Braghirolli
- Instituto de Engenharia Nuclear (IEN)/Comissão Nacional de Energia Nuclear (CNEN), Cidade Universitária, Ilha do Fundão, ⁎ Caixa Postal 68550, CEP 21945-970 Rio de Janeiro, Brazil
| | - E A L Andrade
- Instituto de Engenharia Nuclear (IEN)/Comissão Nacional de Energia Nuclear (CNEN), Cidade Universitária, Ilha do Fundão, ⁎ Caixa Postal 68550, CEP 21945-970 Rio de Janeiro, Brazil
| | - J L Silva
- Instituto de Engenharia Nuclear (IEN)/Comissão Nacional de Energia Nuclear (CNEN), Cidade Universitária, Ilha do Fundão, ⁎ Caixa Postal 68550, CEP 21945-970 Rio de Janeiro, Brazil
| | - H O K Hernandes
- Instituto de Engenharia Nuclear (IEN)/Comissão Nacional de Energia Nuclear (CNEN), Cidade Universitária, Ilha do Fundão, ⁎ Caixa Postal 68550, CEP 21945-970 Rio de Janeiro, Brazil
| | - E S Valente
- Centro de Desenvolvimento da Tecnologia Nuclear (CDTN)/CNEN, Avenida Presidente Antônio Carlos, 6.627-Campus UFMG, CEP 31270-901-Caixa Postal 941, CEP 30161-970 Belo Horizonte, Minas, Brazil
| | - H M Dalle
- Centro de Desenvolvimento da Tecnologia Nuclear (CDTN)/CNEN, Avenida Presidente Antônio Carlos, 6.627-Campus UFMG, CEP 31270-901-Caixa Postal 941, CEP 30161-970 Belo Horizonte, Minas, Brazil
| | - V M Almeida
- Centro Regional de Ciências Nucleares (CRCN - NE)/ CNEN, Avenida Professor Luiz Freire, no. 200, Cidade Universitária, CEP: 50.740-545 Recife-PE, Brazil
| | - T G Silva
- Centro Regional de Ciências Nucleares (CRCN - NE)/ CNEN, Avenida Professor Luiz Freire, no. 200, Cidade Universitária, CEP: 50.740-545 Recife-PE, Brazil
| | - M C F Fragoso
- Centro Regional de Ciências Nucleares (CRCN - NE)/ CNEN, Avenida Professor Luiz Freire, no. 200, Cidade Universitária, CEP: 50.740-545 Recife-PE, Brazil
| | - M L Oliveira
- Centro Regional de Ciências Nucleares (CRCN - NE)/ CNEN, Avenida Professor Luiz Freire, no. 200, Cidade Universitária, CEP: 50.740-545 Recife-PE, Brazil
| | - E S S Nascimento
- Centro Regional de Ciências Nucleares (CRCN - NE)/ CNEN, Avenida Professor Luiz Freire, no. 200, Cidade Universitária, CEP: 50.740-545 Recife-PE, Brazil
| | - E M Oliveira
- Instituto de Pesquisas Energéticas e Nucleares (IPEN)/CNEN, Caixa Postal 11049, CEP 05422-970 São Paulo, Brazil
| | - R Herrerias
- Instituto de Pesquisas Energéticas e Nucleares (IPEN)/CNEN, Caixa Postal 11049, CEP 05422-970 São Paulo, Brazil
| | - A A Souza
- Instituto de Pesquisas Energéticas e Nucleares (IPEN)/CNEN, Caixa Postal 11049, CEP 05422-970 São Paulo, Brazil
| | - E Bambalas
- Instituto de Pesquisas Energéticas e Nucleares (IPEN)/CNEN, Caixa Postal 11049, CEP 05422-970 São Paulo, Brazil
| | - W A Bruzinga
- Instituto de Pesquisas Energéticas e Nucleares (IPEN)/CNEN, Caixa Postal 11049, CEP 05422-970 São Paulo, Brazil
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Wong DVT, Lima-Júnior RCP, Carvalho CBM, Borges VF, Wanderley CWS, Bem AXC, Leite CAVG, Teixeira MA, Batista GLP, Silva RL, Cunha TM, Brito GAC, Almeida PRC, Cunha FQ, Ribeiro RA. The Adaptor Protein Myd88 Is a Key Signaling Molecule in the Pathogenesis of Irinotecan-Induced Intestinal Mucositis. PLoS One 2015; 10:e0139985. [PMID: 26440613 PMCID: PMC4595146 DOI: 10.1371/journal.pone.0139985] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Accepted: 09/21/2015] [Indexed: 01/03/2023] Open
Abstract
Intestinal mucositis is a common side effect of irinotecan-based anticancer regimens. Mucositis causes cell damage, bacterial/endotoxin translocation and production of cytokines including IL–1 and IL–18. These molecules and toll-like receptors (TLRs) activate a common signaling pathway that involves the Myeloid Differentiation adaptor protein, MyD88, whose role in intestinal mucositis is unknown. Then, we evaluated the involvement of TLRs and MyD88 in the pathogenesis of irinotecan-induced intestinal mucositis. MyD88-, TLR2- or TLR9-knockout mice and C57BL/6 (WT) mice were given either saline or irinotecan (75 mg/kg, i.p. for 4 days). On day 7, animal survival, diarrhea and bacteremia were assessed, and following euthanasia, samples of the ileum were obtained for morphometric analysis, myeloperoxidase (MPO) assay and measurement of pro-inflammatory markers. Irinotecan reduced the animal survival (50%) and induced a pronounced diarrhea, increased bacteremia, neutrophil accumulation in the intestinal tissue, intestinal damage and more than twofold increased expression of MyD88 (200%), TLR9 (400%), TRAF6 (236%), IL–1β (405%), IL–18 (365%), COX–2 (2,777%) and NF-κB (245%) in the WT animals when compared with saline-injected group (P<0.05). Genetic deletion of MyD88, TLR2 or TLR9 effectively controlled the signs of intestinal injury when compared with irinotecan-administered WT controls (P<0.05). In contrast to the MyD88-/- and TLR2-/- mice, the irinotecan-injected TLR9-/- mice showed a reduced survival, a marked diarrhea and an enhanced expression of IL–18 versus irinotecan-injected WT controls. Additionally, the expression of MyD88 was reduced in the TLR2-/- or TLR9-/- mice. This study shows a critical role of the MyD88-mediated TLR2 and TLR9 signaling in the pathogenesis of irinotecan-induced intestinal mucositis.
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Affiliation(s)
- Deysi V. T. Wong
- Nucleus for the Study of Toxicities of the Cancer Treatment, Department of Physiology and Pharmacology, Faculty of Medicine–Federal University of Ceará, Fortaleza, Brazil
- Laboratory of Molecular Biology, Department of Pathology, Cancer Institute of Ceará, Fortaleza, Brazil
| | - Roberto C. P. Lima-Júnior
- Nucleus for the Study of Toxicities of the Cancer Treatment, Department of Physiology and Pharmacology, Faculty of Medicine–Federal University of Ceará, Fortaleza, Brazil
| | - Cibele B. M. Carvalho
- Department of Pathology and Forensic Medicine, Faculty of Medicine–Federal University of Ceará, Fortaleza, Brazil
| | - Vanessa F. Borges
- Department of Pharmacology, School of Medicine of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Carlos W. S. Wanderley
- Nucleus for the Study of Toxicities of the Cancer Treatment, Department of Physiology and Pharmacology, Faculty of Medicine–Federal University of Ceará, Fortaleza, Brazil
| | - Amanda X. C. Bem
- Nucleus for the Study of Toxicities of the Cancer Treatment, Department of Physiology and Pharmacology, Faculty of Medicine–Federal University of Ceará, Fortaleza, Brazil
| | - Caio A. V. G. Leite
- Nucleus for the Study of Toxicities of the Cancer Treatment, Department of Physiology and Pharmacology, Faculty of Medicine–Federal University of Ceará, Fortaleza, Brazil
| | - Maraiza A. Teixeira
- Nucleus for the Study of Toxicities of the Cancer Treatment, Department of Physiology and Pharmacology, Faculty of Medicine–Federal University of Ceará, Fortaleza, Brazil
| | - Gabriela L. P. Batista
- Nucleus for the Study of Toxicities of the Cancer Treatment, Department of Physiology and Pharmacology, Faculty of Medicine–Federal University of Ceará, Fortaleza, Brazil
| | - Rangel L. Silva
- Department of Pharmacology, School of Medicine of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Thiago M. Cunha
- Department of Pharmacology, School of Medicine of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Gerly A. C. Brito
- Department of Morphology, Faculty of Medicine–Federal University of Ceará, Fortaleza, Brazil
| | - Paulo R. C. Almeida
- Department of Pathology and Forensic Medicine, Faculty of Medicine–Federal University of Ceará, Fortaleza, Brazil
| | - Fernando Q. Cunha
- Department of Pharmacology, School of Medicine of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Ronaldo A. Ribeiro
- Nucleus for the Study of Toxicities of the Cancer Treatment, Department of Physiology and Pharmacology, Faculty of Medicine–Federal University of Ceará, Fortaleza, Brazil
- Department of Clinical Oncology, Cancer Institute of Ceará, Fortaleza, Brazil
- * E-mail: ;
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Vaz ER, Fujimura PT, Araujo GR, da Silva CAT, Silva RL, Cunha TM, Lopes-Ferreira M, Lima C, Ferreira MJ, Cunha-Junior JP, Taketomi EA, Goulart LR, Ueira-Vieira C. A Short Peptide That Mimics the Binding Domain of TGF-β1 Presents Potent Anti-Inflammatory Activity. PLoS One 2015; 10:e0136116. [PMID: 26312490 PMCID: PMC4552549 DOI: 10.1371/journal.pone.0136116] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 07/29/2015] [Indexed: 12/30/2022] Open
Abstract
The transforming growth factor beta 1 (TGF-β1) is a pleiotropic cytokine with multiple roles in development, wound healing, and immune regulation. TGF-β1-mediated immune dysfunction may lead to pathological conditions, such as inflammation. Chronic inflammatory process is characterized by a continuous release of pro-inflammatory cytokines, and the inhibition or the blockage of these cytokines signaling pathways are considered a target treatment. In this context, despite the high numbers of TGF-β-targeted pathways, the inducible regulatory T cells (iTreg) to control inflammation seems to be a promising approach. Our aim was to develop novel peptides through phage display (PhD) technology that could mimic TGF-β1 function with higher potency. Specific mimetic peptides were obtained through a PhD subtraction strategy from whole cell binding using TGF-β1 recombinant as a competitor during elution step. We have selected a peptide that seems to play an important role on cellular differentiation and modulation of TNF-α and IL-10 cytokines. The synthetic pm26TGF-β1 peptide tested in PBMC significantly down-modulated TNF-α and up-regulated IL-10 responses, leading to regulatory T cells (Treg) phenotype differentiation. Furthermore, the synthetic peptide was able to decrease leukocytes rolling in BALB/C mice and neutrophils migration during inflammatory process in C57BL/6 mice. These data suggest that this peptide may be useful for the treatment of inflammatory diseases, especially because it displays potent anti-inflammatory properties and do not exhibit neutrophils’ chemoattraction.
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Affiliation(s)
- Emília R. Vaz
- Laboratory of Nanobiotechnology Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
- * E-mail:
| | - Patrícia T. Fujimura
- Laboratory of Nanobiotechnology Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Galber R. Araujo
- Laboratory of Nanobiotechnology Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Carlos A. T. da Silva
- Laboratory of Nanobiotechnology Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Rangel L. Silva
- Department of Pharmacology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Thiago M. Cunha
- Department of Pharmacology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Mônica Lopes-Ferreira
- Immunoregulation Unit, Special Laboratory of Applied Toxicology (CEPID/FAPESP), Butantan Institute, São Paulo, São Paulo State, Brazil
| | - Carla Lima
- Immunoregulation Unit, Special Laboratory of Applied Toxicology (CEPID/FAPESP), Butantan Institute, São Paulo, São Paulo State, Brazil
| | - Márcio J. Ferreira
- Immunoregulation Unit, Special Laboratory of Applied Toxicology (CEPID/FAPESP), Butantan Institute, São Paulo, São Paulo State, Brazil
| | - Jair P. Cunha-Junior
- Laboratory of Immunotechnology and Immunochemistry, Institute of Biomedical Sciences, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Ernesto A. Taketomi
- Laboratory of Immunotechnology and Immunochemistry, Institute of Biomedical Sciences, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Luiz R. Goulart
- Laboratory of Nanobiotechnology Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
- Department of Medical Microbiology and Immunology, University of California Davis, Davis, CA, United States of America
| | - Carlos Ueira-Vieira
- Laboratory of Nanobiotechnology Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
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30
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Ruiz-Miyazawa KW, Pinho-Ribeiro FA, Zarpelon AC, Staurengo-Ferrari L, Silva RL, Alves-Filho JC, Cunha TM, Cunha FQ, Casagrande R, Verri WA. Vinpocetine reduces lipopolysaccharide-induced inflammatory pain and neutrophil recruitment in mice by targeting oxidative stress, cytokines and NF-κB. Chem Biol Interact 2015; 237:9-17. [PMID: 25980587 DOI: 10.1016/j.cbi.2015.05.007] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 03/24/2015] [Accepted: 05/08/2015] [Indexed: 01/07/2023]
Abstract
In response to lipopolysaccharide (LPS), tissue resident macrophages and recruited neutrophils produce inflammatory mediators through activation of Toll-like receptor 4 (TLR4)/nuclear factor kappa B (NF-κB) signaling pathway. These mediators include inflammatory cytokines and reactive oxygen species that, in turn, sensitize nociceptors and lead to inflammatory pain. Vinpocetine is a nootropic drug widely used to treat cognitive and neurovascular disorders, and more recently its anti-inflammatory properties through inhibition of NF-κB activation have been described. In the present study, we used the intraplantar and intraperitoneal LPS stimulus in mice to investigate the effects of vinpocetine pre-treatment (3, 10, or 30mg/kg by gavage) in hyperalgesia, leukocyte recruitment, oxidative stress, and pro-inflammatory cytokine production (TNF-α, IL-1β, and IL-33). LPS-induced NF-κB activation and cytokine production were investigated using RAW 264.7 macrophage cell in vitro. Vinpocetine (30mg/kg) significantly reduces hyperalgesia to mechanical and thermal stimuli, and myeloperoxidase (MPO) activity (a neutrophil marker) in the plantar paw skin, and also inhibits neutrophil and mononuclear cell recruitment, superoxide anion and nitric oxide production, oxidative stress, and cytokine production (TNF-α, IL-1β and IL-33) in the peritoneal cavity. At least in part, these effects seem to be mediated by direct effects of vinpocetine on macrophages, since it inhibited the production of the same cytokines (TNF-α, IL-1β and IL-33) and the NF-κB activation in LPS-stimulated RAW 264.7 macrophages. Our results suggest that vinpocetine represents an important therapeutic approach to treat inflammation and pain induced by a gram-negative bacterial component by targeting NF-κB activation and NF-κB-related cytokine production in macrophages.
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Affiliation(s)
- Kenji W Ruiz-Miyazawa
- Departamento de Ciências Patológicas, Universidade Estadual de Londrina-UEL, Rod. Celso Garcia Cid, Km 380, PR445, 86057-970, Cx. Postal 10.011, Londrina, Paraná, Brazil
| | - Felipe A Pinho-Ribeiro
- Departamento de Ciências Patológicas, Universidade Estadual de Londrina-UEL, Rod. Celso Garcia Cid, Km 380, PR445, 86057-970, Cx. Postal 10.011, Londrina, Paraná, Brazil
| | - Ana C Zarpelon
- Departamento de Ciências Patológicas, Universidade Estadual de Londrina-UEL, Rod. Celso Garcia Cid, Km 380, PR445, 86057-970, Cx. Postal 10.011, Londrina, Paraná, Brazil
| | - Larissa Staurengo-Ferrari
- Departamento de Ciências Patológicas, Universidade Estadual de Londrina-UEL, Rod. Celso Garcia Cid, Km 380, PR445, 86057-970, Cx. Postal 10.011, Londrina, Paraná, Brazil
| | - Rangel L Silva
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes s/n, 14050-490 Ribeirão Preto, São Paulo, Brazil
| | - Jose C Alves-Filho
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes s/n, 14050-490 Ribeirão Preto, São Paulo, Brazil
| | - Thiago M Cunha
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes s/n, 14050-490 Ribeirão Preto, São Paulo, Brazil
| | - Fernando Q Cunha
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes s/n, 14050-490 Ribeirão Preto, São Paulo, Brazil
| | - Rubia Casagrande
- Departamento de Ciências Farmacêuticas, Universidade Estadual de Londrina-UEL, Avenida Robert Koch, 60, Hospital Universitário, 86038-350 Londrina, Paraná, Brazil
| | - Waldiceu A Verri
- Departamento de Ciências Patológicas, Universidade Estadual de Londrina-UEL, Rod. Celso Garcia Cid, Km 380, PR445, 86057-970, Cx. Postal 10.011, Londrina, Paraná, Brazil.
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31
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Souza GR, Cunha TM, Silva RL, Lotufo CM, Verri WA, Funez MI, Villarreal CF, Talbot J, Sousa LP, Parada CA, Cunha FQ, Ferreira SH. Involvement of nuclear factor kappa B in the maintenance of persistent inflammatory hypernociception. Pharmacol Biochem Behav 2015; 134:49-56. [PMID: 25902407 DOI: 10.1016/j.pbb.2015.04.005] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 04/07/2015] [Accepted: 04/15/2015] [Indexed: 01/09/2023]
Abstract
The pathophysiology of chronic inflammatory pain remains poorly understood. In this context, we developed an experimental model in which successive daily injection of prostaglandin E2 (PGE2) for 14days into rat hind paws produces a persistent state of hypernociception (i.e. decrease in mechanical nociceptive threshold). This state persists for more than 30days after discontinuing PGE2 injection. In the present study, we investigated the participation of nuclear factor kappa B (NF-κB), in the maintenance of this process. Mechanical hypernociception was evaluated using the electronic von Frey test. Activation of NF-κB signaling was measured through the determination of NF-κB p65 subunit translocation to the nucleus of dorsal root ganglion neurons (DRG) by immunofluorescence and western blotting. Herein, we detected an increase in NF-κB p65 subunit translocation to the nucleus of DRG neurons along with persistent inflammatory hypernociception compared with controls. Intrathecal treatment with either dexamethasone or PDTC (NF-κB activation inhibitor) after ending of the induction phase of the persistent inflammatory hypernociception, curtailed the hypernociception period as well as reducing NF-κB p65 subunit translocation. Treatment with antisense oligonucleotides against the NF-κB p65 subunit for 5 consecutive days also reduced persistent inflammatory hypernociception. Inhibition of PKA and PKCε reduced persistent inflammatory hypernociception, which was associated with inhibition of NF-κB p65 subunit translocation. Together these results suggest that peripheral activation of NF-κB by PKA and PKC in primary sensory neurons plays an important role in maintaining persistent inflammatory pain.
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Affiliation(s)
- Guilherme R Souza
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Thiago M Cunha
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Rangel L Silva
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Celina M Lotufo
- Instituto de Ciências Biomédicas, Federal University of Uberlandia, Umuarama, MG 38405-320 Uberlândia, Brazil
| | - Waldiceu A Verri
- Departamento de Ciencias Patologicas, Universidade Estadual de Londrina, Londrina, Parana, Brazil
| | - Mani I Funez
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Christiane F Villarreal
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Jhimmy Talbot
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Lirlândia P Sousa
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Carlos A Parada
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Fernando Q Cunha
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil.
| | - Sergio H Ferreira
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil.
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Silva RL, Lopes AH, França RO, Vieira SM, Silva ECC, Amorim RCN, Cunha FQ, Pohlit AM, Cunha TM. The quassinoid isobrucein B reduces inflammatory hyperalgesia and cytokine production by post-transcriptional modulation. J Nat Prod 2015; 78:241-9. [PMID: 25667960 DOI: 10.1021/np500796f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Isobrucein B (1) is a quassinoid isolated from the Amazonian medicinal plant Picrolemma sprucei. Herein we investigate the anti-inflammatory and antihyperalgesic effects of this quassinoid. Isobrucein B (1) (0.5-5 mg/kg) inhibited carrageenan-induced inflammatory hyperalgesia in mice in a dose-dependent manner. Reduced hyperalgesia was associated with reduction in both neutrophil migration and pronociceptive cytokine production. Pretreatment with 1 inhibited in vitro production/release of cytokines TNF, IL-1β, and KC/CXCL1 by lipopolysaccharide-stimulated macrophages. To investigate its molecular mechanism, RAW 264.7 macrophages with a luciferase reporter gene controlled by the NF-κB promoter were used (RAW 264.7-Luc). Quassinoid 1 reduced the luminescence emission by RAW 264.7-Luc stimulated by different compounds. Unexpectedly, NF-κB translocation to macrophage nuclei was not inhibited by 1 when evaluated by Western blotting and immunofluorescence. Furthermore, quassinoid 1 did not change the levels of TNF mRNA transcription in stimulated macrophages, suggesting post-transcriptional modulation. In addition, constitutive expression of luciferase in RAW 264.7 cells transiently transfected with a plasmid containing a universal promoter was inhibited by 1. Thus, isobrucein B (1) displays anti-inflammatory and antihyperalgesic activities by nonselective post-transcriptional modulation, resulting in decreased production/release of pro-inflammatory cytokines and neutrophil migration.
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Affiliation(s)
- Rangel L Silva
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo , São Paulo, Brazil
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Shen J, Samul R, Silva RL, Akiyama H, Liu H, Saishin Y, Hackett SF, Zinnen S, Kossen K, Fosnaugh K, Vargeese C, Gomez A, Bouhana K, Aitchison R, Pavco P, Campochiaro PA. Suppression of ocular neovascularization with siRNA targeting VEGF receptor 1. Gene Ther 2006; 13:225-34. [PMID: 16195704 DOI: 10.1038/sj.gt.3302641] [Citation(s) in RCA: 201] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
In this study, we used small interfering RNA (siRNA) directed against vascular endothelial growth factor receptor 1 (vegfr1) mRNA to investigate the role of VEGFR1 in ocular neovascularization (NV). After evaluating many siRNAs, Sirna-027 was identified; it cleaved vegfr1 mRNA at the predicted site and reduced its levels in cultured endothelial cells and in mouse models of retinal and choroidal neovascularization (CNV). Compared to injection of an inverted control sequence, quantitative reverse transcriptase-PCR demonstrated statistically significant reductions of 57 and 40% in vegfr1 mRNA after intravitreous or periocular injection of Sirna-027, respectively. Staining showed uptake of 5-bromodeoxyuridine-labeled Sirna-027 in retinal cells that lasted between 3 and 5 days after intravitreous injection and was still present 5 days after periocular injection. In a CNV model, intravitreous or periocular injections of Sirna-027 resulted in significant reductions in the area of NV ranging from 45 to 66%. In mice with ischemic retinopathy, intravitreous injection of 1.0 mug of Sirna-027 reduced retinal NV by 32% compared to fellow eyes treated with 1.0 mug of inverted control siRNA. These data suggest that VEGFR1 plays an important role in the development of retinal and CNV and that targeting vegfr1 mRNA with siRNA has therapeutic potential.
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Affiliation(s)
- J Shen
- 1The Departments of Ophthalmology and Neuroscience, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Melo GB, Silva RL, Melo VA, Antoniolli AR, Souza MEJ, Jordani MC, Castro-e-Silva O. Effect of the aqueous extract of Hyptis pectinata on liver mitochondrial respiration. Phytomedicine 2005; 12:359-62. [PMID: 15957370 DOI: 10.1016/j.phymed.2004.02.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Some studies have indicated that mitochondria may be the target organelle of plants. We therefore decided to assess the effects of the aqueous extract of Hyptis pectinata leaves on liver mitochondrial respiratory function in vitro. Eight rat livers were subjected to isolation of mitochondria by differential centrifugation. In an adequate medium, the plant extract was added at different concentrations. The analyzed data were: state 3, state 4 and respiratory control ratio (RCR). H. pectinata extract caused a statistically significant decrease in state 3 (at 0.05, 0.1 and 0.2 mg/mg protein) and RCR (at 0.05, 0.1 and 0.2 mg/mg protein). Respiratory state 4 was not altered by the increasing concentrations. In conclusion, the aqueous extract of H. pectinata leaves may not injure the mitochondrial inner membrane but decreases significantly the oxidative phosphorylation.
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Affiliation(s)
- G B Melo
- Department of Medicine, Universidade Federal de Sergipe, Aracaju, Brazil
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Heins-Vaccari EM, Machado CM, Saboya RS, Silva RL, Dulley FL, Lacaz CS, Freitas Leite RS, Hernandez Arriagada GL. Phialemonium curvatum infection after bone marrow transplantation. Rev Inst Med Trop Sao Paulo 2001; 43:163-6. [PMID: 11452326 DOI: 10.1590/s0036-46652001000300009] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
We report a case of cutaneous infection caused by Phialemonium curvatum GAMS et COOKE, 1983, after bone marrow transplantation. The genus Phialemonium was created by GAMS & MCGINNIS in 1983 including three new species: Ph. obovatum, Ph. curvatum and Ph. dimorphosporum, and represents an intermediate genus between Acremonium and Phialophora. Nowadays, the genus Phialemonium is considered to be a pheoid fungus which may cause the eventual lesions observed in pheo- and hyalohyphomycosis. Species of this genus have been described as opportunistic agents in humans and animals, mainly as a result of immunosuppression. In the present case, the patient had multiple myeloma and received an allogenic bone marrow transplant from his HLA-compatible brother. Two months after transplantation, he developed purplish and painful nodular lesions on the right ankle. Some of these lesions drained spontaneously and apparently hyaline mycelial filaments were observed, whose culture was initially identified as Acremonium sp. Subsequent studies showed that the fungus was Phialemonium curvatum. The infection was treated with amphotericin B, followed by ketoconazole. The patient was submitted to surgical debridement followed by two skin grafts to repair the bloody area. The duration of the treatment was 4 months and secondary prophylaxis with ketoconazole alone was maintained for one additional month. No recurrence was observed after discontinuation of treatment. The authors comment on the pathogenicity of the genus Phialemonium.
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Affiliation(s)
- E M Heins-Vaccari
- Laboratório de Micologia, Instituto de Medicina Tropical de São Paulo. Brasil
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Machado CM, Macedo MC, Medeiros RS, Massumoto C, Silva AC, Castelli JB, Silva RL, Ostronoff M, Dulley FL. Primary Pneumocystis carinii prophylaxis with aerosolized pentamidine after bone marrow transplantation. Acta Haematol 2000; 99:54-6. [PMID: 9490570 DOI: 10.1159/000040719] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Patients undergoing immunosuppressive therapy have a 21% risk of developing <i>Pneumocystis carinii</i> pneumonia (PCP) if no prophylaxis is used [1]. During the first 6 months after bone marrow transplantation (BMT), the recipients have an estimated 9% risk of developing PCP [2]. Standard prophylaxis with sulfamethoxazole and trimethoprim (SMX/TMP) daily or intermittent doses has been used effectively in transplant and other immunosuppressed patients [2–4]. However, poor compliance and undesirable myelotoxicity are expected with this schedule, especially if other myelotoxic drugs such as ganciclovir have to be administered. Aerosolized pentamidine (AP) has been considered an attractive alternative in AIDS patients who do not tolerate SMX/TMP because only 4% of the patients discontinue AP prophylaxis due to side effects [5].
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Affiliation(s)
- C M Machado
- BMT Program, Pró Sangue Hemocentro Foundation and Discipline of Hematology, São Paulo, Brazil
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Machado CM, Dulley FL, Boas LS, Castelli JB, Macedo MC, Silva RL, Pallota R, Saboya RS, Pannuti CS. CMV pneumonia in allogeneic BMT recipients undergoing early treatment of pre-emptive ganciclovir therapy. Bone Marrow Transplant 2000; 26:413-7. [PMID: 10982288 DOI: 10.1038/sj.bmt.1702526] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The incidence, treatment and outcome of CMV interstitial pneumonia (CMV-IP) were reviewed in 139 consecutive allogeneic BMT patients undergoing extended CMV antigenemia surveillance and two different ganciclovir (GCV) strategies to control CMV infection. Nineteen cases of CMV-IP were reviewed, 16 of 63 patients (25.4%) who received early GCV treatment (ET) and three of 76 patients (3.9%) who received preemptive (PE) GCV therapy. In the ET group, the median time for occurrence of CMV-IP was 55 (range 36 to 311) days. Two patients had three episodes of CMV-IP recurrences after day +100. CMV-IP-related death occurred in two patients (15.4%). In the PE group, 41 patients received pre-emptive GCV therapy prompted by the appearance of positive antigenemia > or =2 cells. The median time for the occurrence of CMV-IP was 92 (range 48 to 197) days. Response to therapy was observed when GCV was introduced within 6 days of antigenemia positivity. The use of IVIg in association with GCV did not play a major role in response to therapy. The median time for occurrence of CMV-IP was delayed during PE strategy and the cost-effectiveness of CMV surveillance after day +100 should be investigated in this population.
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MESH Headings
- Adolescent
- Adult
- Antigens, Viral/metabolism
- Antiviral Agents/administration & dosage
- Antiviral Agents/standards
- Bone Marrow Transplantation/adverse effects
- Child
- Child, Preschool
- Cytomegalovirus Infections/drug therapy
- Cytomegalovirus Infections/epidemiology
- Cytomegalovirus Infections/immunology
- Drug Therapy, Combination
- Ganciclovir/administration & dosage
- Ganciclovir/standards
- Humans
- Immunoglobulins, Intravenous/administration & dosage
- Immunoglobulins, Intravenous/standards
- Incidence
- Lung Diseases, Interstitial/drug therapy
- Lung Diseases, Interstitial/epidemiology
- Lung Diseases, Interstitial/virology
- Middle Aged
- Pneumonia, Viral/drug therapy
- Pneumonia, Viral/epidemiology
- Premedication
- Retrospective Studies
- Survival Rate
- Transplantation, Homologous/adverse effects
- Treatment Outcome
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Affiliation(s)
- C M Machado
- BMT Program, Fundação Pró Sangue Hemocentro de São Paulo, Discipline of Hematology, Brazil
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da Fonseca FG, Silva RL, Marques JT, Ferreira PC, Kroon EG. The genome of cowpox virus contains a gene related to those encoding the epidermal growth factor, transforming growth factor alpha and vaccinia growth factor. Virus Genes 1999; 18:151-60. [PMID: 10403701 DOI: 10.1023/a:1008072720217] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Cowpox virus (CPV) is a member of the Orthopoxvirus genus and has the genetic capacity to encode a multitude of genes that interfere with the host inflammatory and immune response or modulate the physiological state of infected and non-infected cells. Among these CPV factors are receptors homologous to interferon and tumor necrosis factor receptors and also a viral cellular serine-proteinase analog. Here we describe the detection of a CPV gene that encodes a protein homologous to epidermal growth factor, transforming growth factor alpha and poxvirus growth factors, such as the vaccinia growth factor (VGF). The VGF and other poxvirus growth factors are produced early in the infection and are secreted into the medium where they bind to the EGF receptors, generating mytotic responses. The cowpox growth factor (CGF) gene was detected in three copies on the virus genome by PCR, and by northern and southern blot hybridization using VGF nucleotide sequences as primers and probes. The CPV gene has a strong nucleotide and predicted amino acid similarity with VGF, and is also produced early in the infection.
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Affiliation(s)
- F G da Fonseca
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brasil
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Machado CM, Martins MA, Heins-Vaccari EM, Lacaz CDS, Macedo MC, Castelli JB, Medeiros RS, Silva RL, Dulley FL. Scedosporium apiospermum sinusitis after bone marrow transplantation: report of a case. Rev Inst Med Trop Sao Paulo 1998; 40:321-3. [PMID: 10030078 DOI: 10.1590/s0036-46651998000500010] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A forty-year-old man underwent an allogeneic BMT from his HLA identical sister. GvHD prophylaxis was done with cyclosporine (CyA), methotrexate and prednisone (PDN). On day +90 extensive GvHD was noted and higher doses of immunosuppressive drugs alternating CyA with PDN were initiated. Patient's follow-up was complicated by intermittent episodes of leukopenia and monthly episodes of sinusitis or pneumonia. One year after BMT, the patient developed hoarseness and nasal voice. No etiologic agent could be identified on a biopsy sample of the vocal chord. Upon tapering the doses of immunosuppressive drugs, the patient had worsening of chronic GvHD and was reintroduced on high doses of cyclosporine alternating with prednisone on day +550. Three months later, GvHD remained out of control and the patient was started on azathioprine. On day +700, hoarseness and nasal voice recurred. Another biopsy of the left vocal chord failed to demonstrate infection. Episodes of sinusitis became more frequent and azathioprine was withheld 3 months after it was started. One month later, the patient had bloody nasal discharge and surgical drainage of maxillary sinuses was performed. Histopathology showed hyphae and cultures grew Scedosporium apiospermum. Itraconazole 800 mg/day was initiated. The patient developed progressive respiratory failure and died 15 days later.
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Affiliation(s)
- C M Machado
- Mycology Laboratory, Instituto de Medicina Tropical de São Paulo, Brasil
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40
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Yoshida EL, Silva RL, Cortez LS, Corrêa FM. [Finding of Leishmania species in Didelphis marsupialis aurita in the state of São Paulo, Brazil. preliminary note]. Rev Inst Med Trop Sao Paulo 1979; 21:110-3. [PMID: 573492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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