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da Rocha LS, Mendes CB, Silva JS, Alcides RLGF, Mendonça IP, Andrade-da-Costa BLS, Machado SS, Ximenes-da-Silva A. Triheptanoin, an odd-medium-chain triglyceride, impacts brain cognitive function in young and aged mice. Nutr Neurosci 2024; 27:212-222. [PMID: 36809120 DOI: 10.1080/1028415x.2023.2178096] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
ABSTRACTThe brain aging process triggers cognitive function impairment, such as memory loss and compromised quality of life. Cognitive impairment is based on bioenergetic status, with reduced glucose uptake and metabolism in aged brains. Anaplerotic substrates are reported to promote mitochondrial ATP generation, having been tested in clinical trials for the treatment of neurological disorders and metabolic diseases.Objectives and Methods: To assess whether the improvement in oxidative capacity ameliorates cognitive function in adults (12 weeks), and aged (22-month-old) C57/6BJ mice, they received (1) a ketogenic diet, (2) a ketogenic diet supplemented with the anaplerotic substance, triheptanoin, or (3) a control diet for 12 weeks. Spontaneous alternation and time spent in a previously closed arm in the Y-maze test and time interacting with an unknown object in the novel object recognition test (NORT) were used to evaluate working memory. Acetylcholinesterase (AChE) activity in the prefrontal lobe, brain left hemisphere, and cerebellum was also evaluated. Glucose transporter 3 (GLUT3) expression in the prefrontal lobe was analyzed by western blotting.Results: The ketogenic diet (KD) reduced spontaneous alternation in aged mice, leading to lower AChE activity in the aged prefrontal lobe and cerebellum, and in the parieto-temporal-occipital lobe of adult mice. Furthermore, KD decreased GLUT3 protein expression in the frontal lobe of the adults.Discussion: Supplementation of KD with triheptanoin prevented memory impairment and showed similar values of AChE activity and GLUT3 expression compared to the controls. Our data suggest that triheptanoin has a potential role in the bioenergetic capacity of the brain, improving cognitive function.
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Affiliation(s)
- L S da Rocha
- Institute of Biological and Health Science, Federal University of Alagoas, Maceió, Brazil
| | - C B Mendes
- Institute of Biological and Health Science, Federal University of Alagoas, Maceió, Brazil
| | - J S Silva
- Institute of Biological and Health Science, Federal University of Alagoas, Maceió, Brazil
| | - R L G F Alcides
- Institute of Biological and Health Science, Federal University of Alagoas, Maceió, Brazil
| | - I P Mendonça
- Department of Physiology and Pharmacology, Federal University of Pernambuco, Recife, Brazil
| | - B L S Andrade-da-Costa
- Department of Physiology and Pharmacology, Federal University of Pernambuco, Recife, Brazil
| | - S S Machado
- Chemistry and Biotechnology Institute, Federal University of Alagoas, Maceió, Brazil
| | - A Ximenes-da-Silva
- Institute of Biological and Health Science, Federal University of Alagoas, Maceió, Brazil
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2
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Guimarães JB, Rodrigues VF, Pereira ÍS, Manso GMDC, Elias-Oliveira J, Leite JA, Waldetario MCGM, de Oliveira S, Gomes ABDSP, Faria AMC, Ramos SG, Bonato VLD, Silva JS, Vinolo MAR, Sampaio UM, Clerici MTPS, Carlos D. Inulin prebiotic ameliorates type 1 diabetes dictating regulatory T cell homing via CCR4 to pancreatic islets and butyrogenic gut microbiota in murine model. J Leukoc Biol 2024; 115:483-496. [PMID: 37947010 DOI: 10.1093/jleuko/qiad132] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 09/04/2023] [Accepted: 10/14/2023] [Indexed: 11/12/2023] Open
Abstract
Gut dysbiosis is linked to type 1 diabetes mellitus (T1D). Inulin (INU), a prebiotic, modulates the gut microbiota, promoting beneficial bacteria that produce essential short-chain fatty acids for immune regulation. However, how INU affects T1D remains uncertain. Using a streptozotocin-induced (STZ) mouse model, we studied INU's protective effects. Remarkably, STZ + INU mice resisted T1D, with none developing the disease. They had lower blood glucose, reduced pancreatic inflammation, and normalized serum insulin compared with STZ + SD mice. STZ + INU mice also had enhanced mucus production, abundant Bifidobacterium, Clostridium cluster IV, Akkermansia muciniphila, and increased fecal butyrate. In cecal lymph nodes, we observed fewer CD4+Foxp3+ regulatory T cells expressing CCR4 and more Foxp3+CCR4+ cells in pancreatic islets, with higher CCL17 expression. This phenotype was absent in CCR4-deficient mice on INU. INU supplementation effectively protects against experimental T1D by recruiting CCR4+ regulatory T cells via CCL17 into the pancreas and altering the butyrate-producing microbiota.
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Affiliation(s)
- Jhefferson Barbosa Guimarães
- Laboratory of Imunorregulation of Metabolic Diseases, Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ave. Bandeirantes, Ribeirão Preto, São Paulo, 14049-900, Brazil
| | - Vanessa Fernandes Rodrigues
- Laboratory of Imunorregulation of Metabolic Diseases, Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ave. Bandeirantes, Ribeirão Preto, São Paulo, 14049-900, Brazil
| | - Ítalo Sousa Pereira
- Laboratory of Imunorregulation of Metabolic Diseases, Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ave. Bandeirantes, Ribeirão Preto, São Paulo, 14049-900, Brazil
| | - Gabriel Martins da Costa Manso
- Laboratory of Imunorregulation of Metabolic Diseases, Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ave. Bandeirantes, Ribeirão Preto, São Paulo, 14049-900, Brazil
| | - Jefferson Elias-Oliveira
- Laboratory of Imunorregulation of Metabolic Diseases, Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ave. Bandeirantes, Ribeirão Preto, São Paulo, 14049-900, Brazil
| | - Jefferson Antônio Leite
- Laboratory of Imunorregulation of Metabolic Diseases, Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ave. Bandeirantes, Ribeirão Preto, São Paulo, 14049-900, Brazil
| | | | - Sarah de Oliveira
- Laboratory of Immunoinflammation, Department of Genetics and Evolution, Microbiology and Immunology, Institute of Biology, State University of Campinas, Campinas, São Paulo, Brazil
| | - Arilson Bernardo Dos Santos Pereira Gomes
- Laboratory of Immunoinflammation, Department of Genetics and Evolution, Microbiology and Immunology, Institute of Biology, State University of Campinas, Campinas, São Paulo, Brazil
| | - Ana Maria Caetano Faria
- Department of Biochemistry and Immunology, Institute of Biological Sciences, University of Minas Gerais, Belo Horizonte, Minas Gerais,31270-901, Brazil
| | - Simone Gusmão Ramos
- Laboratory of Pathology, Department of Pathology, Ribeirão Preto Medical School, University of São Paulo, Ave. Bandeirantes, Ribeirão Preto, São Paulo, 14049-900, Brazil
| | - Vânia L D Bonato
- Laboratory of Immunology and Pulmonary Inflammation, Department of Biochemistry and Immunology, Ribeirao Preto Medical School, University of Sao Paulo, Ave. Bandeirantes, Ribeirão Preto, São Paulo, 14049-900, Brazil
| | - João Santana Silva
- Fiocruz-Bi-Institutional Translational Medicine Plataform, University of São Paulo, Ave. Bandeirantes, Ribeirão Preto, São Paulo, 14049-900, Brazil
| | - Marco Aurélio Ramirez Vinolo
- Laboratory of Immunoinflammation, Department of Genetics and Evolution, Microbiology and Immunology, Institute of Biology, State University of Campinas, Campinas, São Paulo, Brazil
| | - Ulliana Marques Sampaio
- Department of Food Science and Nutrition, School of Food Engineering, State University of Campinas, Campinas, São Paulo, 13083-970, Brazil
| | - Maria Teresa Pedrosa Silva Clerici
- Department of Food Science and Nutrition, School of Food Engineering, State University of Campinas, Campinas, São Paulo, 13083-970, Brazil
| | - Daniela Carlos
- Laboratory of Imunorregulation of Metabolic Diseases, Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ave. Bandeirantes, Ribeirão Preto, São Paulo, 14049-900, Brazil
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3
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Leite JA, Menezes L, Martins E, Rodrigues TS, Tavares L, Ebering A, Schelmbauer C, Martelossi Cebinelli GC, Zinina V, Golden A, Soshnikova N, Zamboni DS, Cunha FQ, Huber M, Silva JS, Waisman A, Carlos D, Saraiva Câmara NO. AIM2 promotes T H17 cells differentiation by regulating RORγt transcription activity. iScience 2023; 26:108134. [PMID: 37867943 PMCID: PMC10585393 DOI: 10.1016/j.isci.2023.108134] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 09/15/2023] [Accepted: 10/02/2023] [Indexed: 10/24/2023] Open
Abstract
AIM2 is an interferon-inducible HIN-200 protein family member and is well-documented for its roles in innate immune responses as a DNA sensor. Recent studies have highlighted AIM2's function on regulatory T cells (Treg) and follicular T cells (Tfh). However, its involvement in Th17 cell differentiation remains unclear. This study reveals that AIM2 promotes Th17 cell differentiation. AIM2 deficiency decreases IL-17A production and downregulates key Th17 associated proteins (RORγt, IL-1R1, IL-23R). AIM2 is located in the nucleus of Th17 cells, where it interacts with RORγt, enhancing its binding to the Il17a promoter. The absence of AIM2 hinders naive CD4 T cells from differentiating into functional Th17 cells and from inducing colitis in Rag1-/- mice. This study uncovers AIM2's role as a regulator of Th17 cell transcriptional programming, highlighting its potential as a therapeutic target for Th17 cell-mediated inflammatory diseases.
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Affiliation(s)
- Jefferson Antônio Leite
- Department of Biochemistry and Immunology, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, São Paulo, Brazil
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Luísa Menezes
- Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, São Paulo, Brazil
| | - Eloisa Martins
- Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, São Paulo, Brazil
- Division of Nephrology, School of Medicine, Federal University of São Paulo, São Paulo, Brazil
| | - Tamara Silva Rodrigues
- Department of Biochemistry and Immunology, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Cellular and Molecular Biology and Pathogenic Bioagents, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Lucas Tavares
- Department of Cellular and Molecular Biology and Pathogenic Bioagents, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Anna Ebering
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Carsten Schelmbauer
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Guilherme C. Martelossi Cebinelli
- Department of Biochemistry and Immunology, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Pharmacology, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Valeriya Zinina
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Artemiy Golden
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Natalia Soshnikova
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Dario S. Zamboni
- Department of Cellular and Molecular Biology and Pathogenic Bioagents, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Fernando Q. Cunha
- Department of Pharmacology, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Magdalena Huber
- Institute of Systems Immunology, Center for Tumor and Immunology, University of Marburg, Marburg, Germany
| | - João Santana Silva
- Department of Biochemistry and Immunology, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Fiocruz-Bi-Institutional Translational Medicine Project, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Ari Waisman
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Daniela Carlos
- Department of Biochemistry and Immunology, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Niels Olsen Saraiva Câmara
- Department of Biochemistry and Immunology, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, São Paulo, Brazil
- Division of Nephrology, School of Medicine, Federal University of São Paulo, São Paulo, Brazil
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Grosche VR, Souza LPF, Ferreira GM, Guevara-Vega M, Carvalho T, Silva RRDS, Batista KLR, Abuna RPF, Silva JS, Calmon MDF, Rahal P, da Silva LCN, Andrade BS, Teixeira CS, Sabino-Silva R, Jardim ACG. Mannose-Binding Lectins as Potent Antivirals against SARS-CoV-2. Viruses 2023; 15:1886. [PMID: 37766292 PMCID: PMC10536204 DOI: 10.3390/v15091886] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 08/17/2023] [Accepted: 08/30/2023] [Indexed: 09/29/2023] Open
Abstract
The SARS-CoV-2 entry into host cells is mainly mediated by the interactions between the viral spike protein (S) and the ACE-2 cell receptor, which are highly glycosylated. Therefore, carbohydrate binding agents may represent potential candidates to abrogate virus infection. Here, we evaluated the in vitro anti-SARS-CoV-2 activity of two mannose-binding lectins isolated from the Brazilian plants Canavalia brasiliensis and Dioclea violacea (ConBR and DVL). These lectins inhibited SARS-CoV-2 Wuhan-Hu-1 strain and variants Gamma and Omicron infections, with selectivity indexes (SI) of 7, 1.7, and 6.5, respectively for ConBR; and 25, 16.8, and 22.3, for DVL. ConBR and DVL inhibited over 95% of the early stages of the viral infection, with strong virucidal effect, and also protected cells from infection and presented post-entry inhibition. The presence of mannose resulted in the complete lack of anti-SARS-CoV-2 activity by ConBR and DVL, recovering virus titers. ATR-FTIR, molecular docking, and dynamic simulation between SARS-CoV-2 S and either lectins indicated molecular interactions with predicted binding energies of -85.4 and -72.0 Kcal/Mol, respectively. Our findings show that ConBR and DVL lectins possess strong activities against SARS-CoV-2, potentially by interacting with glycans and blocking virus entry into cells, representing potential candidates for the development of novel antiviral drugs.
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Affiliation(s)
- Victória Riquena Grosche
- Laboratory of Antiviral Research, Institute of Biomedical Science (ICBIM), Federal University of Uberlândia (UFU), Uberlândia 38405-317, Brazil; (V.R.G.); (G.M.F.)
- Institute of Biosciences, Languages, and Exact Sciences (Ibilce), São Paulo State University (Unesp), São José do Rio Preto 15054-000, Brazil; (T.C.); (M.d.F.C.); (P.R.)
| | - Leandro Peixoto Ferreira Souza
- Innovation Center in Salivary Diagnostic and Nanobiotechnology, Institute of Biomedical Science (ICBIM), Federal University of Uberlândia (UFU), Uberlândia 38405-317, Brazil; (L.P.F.S.); (M.G.-V.)
| | - Giulia Magalhães Ferreira
- Laboratory of Antiviral Research, Institute of Biomedical Science (ICBIM), Federal University of Uberlândia (UFU), Uberlândia 38405-317, Brazil; (V.R.G.); (G.M.F.)
| | - Marco Guevara-Vega
- Innovation Center in Salivary Diagnostic and Nanobiotechnology, Institute of Biomedical Science (ICBIM), Federal University of Uberlândia (UFU), Uberlândia 38405-317, Brazil; (L.P.F.S.); (M.G.-V.)
| | - Tamara Carvalho
- Institute of Biosciences, Languages, and Exact Sciences (Ibilce), São Paulo State University (Unesp), São José do Rio Preto 15054-000, Brazil; (T.C.); (M.d.F.C.); (P.R.)
| | | | | | - Rodrigo Paolo Flores Abuna
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, Brazil; (R.P.F.A.); (J.S.S.)
- Oswaldo Cruz Foundation (Fiocruz), Bi-Institutional Platform for Translational Medicine, Ribeirão Preto 14049-900, Brazil
| | - João Santana Silva
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, Brazil; (R.P.F.A.); (J.S.S.)
- Oswaldo Cruz Foundation (Fiocruz), Bi-Institutional Platform for Translational Medicine, Ribeirão Preto 14049-900, Brazil
| | - Marília de Freitas Calmon
- Institute of Biosciences, Languages, and Exact Sciences (Ibilce), São Paulo State University (Unesp), São José do Rio Preto 15054-000, Brazil; (T.C.); (M.d.F.C.); (P.R.)
| | - Paula Rahal
- Institute of Biosciences, Languages, and Exact Sciences (Ibilce), São Paulo State University (Unesp), São José do Rio Preto 15054-000, Brazil; (T.C.); (M.d.F.C.); (P.R.)
| | | | - Bruno Silva Andrade
- Laboratory of Bioinformatics and Computational Chemistry, State University of Southwest of Bahia, Jequié 45205-490, Brazil;
| | - Claudener Souza Teixeira
- Center of Agrarian Science and Biodiversity, Federal University of Cariri (UFCA), Crato 63130-025, Brazil; (R.R.d.S.S.); (C.S.T.)
| | - Robinson Sabino-Silva
- Innovation Center in Salivary Diagnostic and Nanobiotechnology, Institute of Biomedical Science (ICBIM), Federal University of Uberlândia (UFU), Uberlândia 38405-317, Brazil; (L.P.F.S.); (M.G.-V.)
| | - Ana Carolina Gomes Jardim
- Laboratory of Antiviral Research, Institute of Biomedical Science (ICBIM), Federal University of Uberlândia (UFU), Uberlândia 38405-317, Brazil; (V.R.G.); (G.M.F.)
- Institute of Biosciences, Languages, and Exact Sciences (Ibilce), São Paulo State University (Unesp), São José do Rio Preto 15054-000, Brazil; (T.C.); (M.d.F.C.); (P.R.)
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5
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Silva JS, Herkrath APCQ, Pontes DG, Queiroz AC, Medina PO, Herkrath FJ, Moraes JG, Cohen-Carneiro F. Multidisciplinary Management of Intrusive Luxation: Four-year Clinical Follow-up. Oper Dent 2022; 47:603-611. [DOI: 10.2341/21-060-s] [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] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/22/2021] [Indexed: 11/23/2022]
Abstract
SUMMARY
This article aims to describe the multidisciplinary clinical management of an intrusive luxation case. The clinical case reports the management of crown fracture and intrusive luxation of permanent maxillary incisors. The clinical results and subjective outcomes four years after the trauma and after two years of post-treatment follow-up are presented. An 11-year-old female patient sought dental care at the local University after experiencing dental trauma. Crown fracture of tooth 8 and the intrusion and crown fracture of teeth 9 and 10 were clinically diagnosed. The multidisciplinary treatment performed involved: periodontal surgical procedures; orthodontic traction; endodontic treatment; dental bleaching; and esthetic resin composite restorations. After two years of follow-up, the clinical parameters of the restorations were satisfactory, as well as the periodontal and periapical status. Oral health-related quality of life was assessed before and after treatment using the OHIP-Aes instrument, with a significant improvement in quality of life after treatment. The multidisciplinary approach was an effective treatment for this case of intrusive luxation. The dentofacial function and esthetics were recovered and the patient’s quality of life was improved.
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Affiliation(s)
- JS Silva
- *Jardel dos Santos Silva, MSc, Post-Graduate Program in Dentistry, Dental School, Federal University of Amazonas, Manaus, Amazonas, Brazil
| | - APCQ Herkrath
- Ana Paula Corrêa de Queiroz Herkrath, PhD, Post-Graduate Program in Dentistry, Dental School, Federal University of Amazonas, Manaus, Amazonas, Brazil
| | - DG Pontes
- Danielson Guedes Pontes, PhD, Post-Graduate Program in Dentistry, Dental School, Federal University of Amazonas, Manaus, Brazil; Operative Dentistry Department, School of Health Sciences, State University of Amazonas, Manaus, Amazonas, Brazil
| | - AC Queiroz
- Adriana Corrêa de Queiroz, PhD, Post-Graduate Program in Dentistry, Dental School, Federal University of Amazonas, Manaus, Amazonas, Brazil
| | - PO Medina
- Pollyanna Oliveira Medina, PhD, Federal University of Amazonas, Dental School, Manaus, Amazonas, Brazil
| | - FJ Herkrath
- Fernando José Herkrath, PhD, Superior School of Health Sciences, Amazonas State University, Manaus, Brazil. Instituto Leônidas e Maria Deane, Oswaldo Cruz Foundation, Manaus, Amazonas, Brazil
| | - JG Moraes
- Jamile Gonçalves de Moraes, DDS, Dental Kids, Campinas, São Paulo, Brazil
| | - F Cohen-Carneiro
- Flávia Cohen-Carneiro, PhD, Federal University of Amazonas, Dental School, Manaus, Amazonas, Brazil
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6
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Morais MCC, Silva D, Milagre MM, de Oliveira MT, Pereira T, Silva JS, Costa LDF, Minoprio P, Junior RMC, Gazzinelli R, de Lana M, Nakaya HI. Automatic detection of the parasite Trypanosoma cruzi in blood smears using a machine learning approach applied to mobile phone images. PeerJ 2022; 10:e13470. [PMID: 35651746 PMCID: PMC9150695 DOI: 10.7717/peerj.13470] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 04/29/2022] [Indexed: 01/14/2023] Open
Abstract
Chagas disease is a life-threatening illness caused by the parasite Trypanosoma cruzi. The diagnosis of the acute form of the disease is performed by trained microscopists who detect parasites in blood smear samples. Since this method requires a dedicated high-resolution camera system attached to the microscope, the diagnostic method is more expensive and often prohibitive for low-income settings. Here, we present a machine learning approach based on a random forest (RF) algorithm for the detection and counting of T. cruzi trypomastigotes in mobile phone images. We analyzed micrographs of blood smear samples that were acquired using a mobile device camera capable of capturing images in a resolution of 12 megapixels. We extracted a set of features that describe morphometric parameters (geometry and curvature), as well as color, and texture measurements of 1,314 parasites. The features were divided into train and test sets (4:1) and classified using the RF algorithm. The values of precision, sensitivity, and area under the receiver operating characteristic (ROC) curve of the proposed method were 87.6%, 90.5%, and 0.942, respectively. Automating image analysis acquired with a mobile device is a viable alternative for reducing costs and gaining efficiency in the use of the optical microscope.
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Affiliation(s)
- Mauro César Cafundó Morais
- Hospital Israelita Albert Einstein, São Paulo, Brazil,Scientific Platform Pasteur-University of São Paulo (SPPU), Universidade de São Paulo, Sao Paulo, SP, Brazil,Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences, Universidade de São Paulo, Sao Paulo, SP, Brazil
| | - Diogo Silva
- Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences, Universidade de São Paulo, Sao Paulo, SP, Brazil
| | - Matheus Marques Milagre
- Departamento de Análises Clínicas (DEACL), Programa de Pós-graduação em Ciências Farmacêuticas (CiPHARMA), Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | | | - Thaís Pereira
- Laboratório de Imunopatologia, Instituto René Rachou, Fundação Oswaldo Cruz, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - João Santana Silva
- Fiocruz- Bi-Institutional Translational Medicine Project, FIOCRUZ/SP, Ribeirão Preto, SP, Brazil
| | - Luciano da F. Costa
- São Carlos Institute of Physics (DFCM- IFSC), Universidade de São Paulo, São Carlos, SP, Brazil
| | - Paola Minoprio
- Scientific Platform Pasteur-University of São Paulo (SPPU), Universidade de São Paulo, Sao Paulo, SP, Brazil
| | | | - Ricardo Gazzinelli
- Laboratório de Imunopatologia, Instituto René Rachou, Fundação Oswaldo Cruz, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Marta de Lana
- Departamento de Análises Clínicas (DEACL), Programa de Pós-graduação em Ciências Farmacêuticas (CiPHARMA), Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil,Núcleo de Pesquisas em Ciências Biológicas (NUPEB), Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - Helder I. Nakaya
- Hospital Israelita Albert Einstein, São Paulo, Brazil,Scientific Platform Pasteur-University of São Paulo (SPPU), Universidade de São Paulo, Sao Paulo, SP, Brazil,Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences, Universidade de São Paulo, Sao Paulo, SP, Brazil,Center of Research in Inflammatory Diseases (CRID), Universidade de São Paulo, Ribeirão Preto, SP, Brazil
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7
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de Souza DMS, Silva MC, Farias SEB, Menezes APDJ, Milanezi CM, Lúcio KDP, Paiva NCN, de Abreu PM, Costa DC, Pinto KMDC, Costa GDP, Silva JS, Talvani A. Diet Rich in Lard Promotes a Metabolic Environment Favorable to Trypanosoma cruzi Growth. Front Cardiovasc Med 2021; 8:667580. [PMID: 34113663 PMCID: PMC8185140 DOI: 10.3389/fcvm.2021.667580] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Accepted: 04/15/2021] [Indexed: 01/24/2023] Open
Abstract
Background: Trypanosoma cruzi is a protozoan parasite that causes Chagas disease and affects 6-7 million people mainly in Latin America and worldwide. Here, we investigated the effects of hyperlipidic diets, mainly composed of olive oil or lard on experimental T. cruzi infection. C57BL/6 mice were fed two different dietary types in which the main sources of fatty acids were either monounsaturated (olive oil diet) or saturated (lard diet). Methods: After 60 days on the diet, mice were infected with 50 trypomastigote forms of T. cruzi Colombian strain. We evaluated the systemic and tissue parasitism, tissue inflammation, and the redox status of mice after 30 days of infection. Results: Lipid levels in the liver of mice fed with the lard diet increased compared with that of the mice fed with olive oil or normolipidic diets. The lard diet group presented with an increased parasitic load in the heart and adipose tissues following infection as well as an increased expression of Tlr2 and Tlr9 in the heart. However, no changes were seen in the survival rates across the dietary groups. Infected mice receiving all diets presented comparable levels of recruited inflammatory cells at 30 days post-infection but, at this time, we observed lard diet inducing an overproduction of CCL2 in the cardiac tissue and its inhibition in the adipose tissue. T. cruzi infection altered liver antioxidant levels in mice, with the lard diet group demonstrating decreased catalase (CAT) activity compared with that of other dietary groups. Conclusions: Our data demonstrated that T. cruzi growth is more favorable on tissue of mice subjected to the lard diet. Our findings supported our hypothesis of a relationship between the source of dietary lipids and parasite-induced immunopathology.
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Affiliation(s)
- Débora Maria Soares de Souza
- Laboratory of Immunobiology of Inflammation, Department of Biological Sciences, Federal University of Ouro Preto, Ouro Preto, Brazil.,Biological Science Post-graduate Program, Federal University of Ouro Preto, Ouro Preto, Brazil.,Health and Nutrition Post-graduate Program, Federal University of Ouro Preto, Ouro Preto, Brazil
| | - Maria Cláudia Silva
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Silvia Elvira Barros Farias
- Laboratory of Immunobiology of Inflammation, Department of Biological Sciences, Federal University of Ouro Preto, Ouro Preto, Brazil
| | - Ana Paula de J Menezes
- Laboratory of Immunobiology of Inflammation, Department of Biological Sciences, Federal University of Ouro Preto, Ouro Preto, Brazil
| | - Cristiane Maria Milanezi
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Karine de P Lúcio
- Laboratory of Metabolic Biochemistry, Department of Biological Sciences, Federal University of Ouro Preto, Ouro Preto, Brazil
| | - Nívia Carolina N Paiva
- Center of Research in Biological Sciences, Federal University of Ouro Preto, Ouro Preto, Brazil
| | - Paula Melo de Abreu
- Biological Science Post-graduate Program, Federal University of Ouro Preto, Ouro Preto, Brazil
| | - Daniela Caldeira Costa
- Health and Nutrition Post-graduate Program, Federal University of Ouro Preto, Ouro Preto, Brazil.,Laboratory of Metabolic Biochemistry, Department of Biological Sciences, Federal University of Ouro Preto, Ouro Preto, Brazil
| | - Kelerson Mauro de Castro Pinto
- Laboratory of Immunobiology of Inflammation, Department of Biological Sciences, Federal University of Ouro Preto, Ouro Preto, Brazil.,School of Physical Education, Federal University of Ouro Preto, Ouro Preto, Brazil
| | - Guilherme de Paula Costa
- Laboratory of Immunobiology of Inflammation, Department of Biological Sciences, Federal University of Ouro Preto, Ouro Preto, Brazil.,Health and Nutrition Post-graduate Program, Federal University of Ouro Preto, Ouro Preto, Brazil
| | - João Santana Silva
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil.,Fiocruz-Bi-Institutional Translational Medicine Plataform, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - André Talvani
- Laboratory of Immunobiology of Inflammation, Department of Biological Sciences, Federal University of Ouro Preto, Ouro Preto, Brazil.,Health and Nutrition Post-graduate Program, Federal University of Ouro Preto, Ouro Preto, Brazil.,Health Science, Infectology and Tropical Medicine Post-graduate Program, Federal University of Minas Gerais, Belo Horizonte, Brazil
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8
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Franco KGS, de Amorim FJR, Santos MA, Rollemberg CVV, de Oliveira FA, França AVC, Santos CNO, Magalhães LS, Cazzaniga RA, de Lima FS, Benevides L, Carregaro V, Silva JS, Brito HLDF, Fernandes DA, da Silva ÂM, de Almeida RP, Bezerra-Santos M, de Jesus AR. Association of IL-9, IL-10, and IL-17 Cytokines With Hepatic Fibrosis in Human Schistosoma mansoni Infection. Front Immunol 2021. [PMID: 34970264 DOI: 10.3389/fimmu.2021.779534]] [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] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
This is a case series study to evaluate immunological markers associated with schistosomiasis advanced fibrosis, including 69 patients from an endemic area from the State of Sergipe and from the Hepatology Service of the University Hospital in Sergipe, Brazil. Hepatic fibrosis was classified based on Niamey protocol for ultrasonography (US). Immune response to Schistosoma mansoni antigens was evaluated by stimulating peripheral blood mononuclear cells (PBMCs) from these patients with either adult worm (SWAP-10 μg/ml) or egg (SEA-10 μg/ml) antigens or purified protein derivative of turberculin (PPD-10 μg/ml) or phytohemagglutinin (PHA-1 μg/ml) for 72 h. The levels of IFN-γ, TNF-α, IL-5, IL-10, and IL-17 were measured in these supernatants by ELISA and IL-9 by Luminex. Single nucleotide polymorphisms in IL-17, IL10, and CD209 genes were genotyped using TaqMan probe by qPCR. Higher levels of IL-9, IL-10, and IL-17 were found in PBMC supernatants of patients with advanced hepatic fibrosis. Direct correlations were detected between IL-9 and IL-17 levels with US spleen sizes, portal vein diameters, and periportal thickening. The CD209 rs2287886 AG polymorphism patients produce higher IL-17 levels. Together, these data suggest a role of these cytokines in the immunopathogenesis of advanced fibrosis in human schistosomiasis.
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Affiliation(s)
- Karine Garcez Schuster Franco
- Image and Graphic Methods Unit, University Hospital, Federal Sergipe University, Aracaju, Brazil
- Health Science Graduate Program, Federal University of Sergipe, Aracaju, Brazil
| | - Fabio Jorge Ramalho de Amorim
- Health Science Graduate Program, Federal University of Sergipe, Aracaju, Brazil
- Laboratory of Molecular Biology, University Hospital, Federal Sergipe University, Aracaju, Brazil
| | - Mário Adriano Santos
- Department of Medicine, University Hospital, Federal University of Sergipe, Aracaju, Brazil
| | - Carla Virgínia Vieira Rollemberg
- Health Science Graduate Program, Federal University of Sergipe, Aracaju, Brazil
- Laboratory of Molecular Biology, University Hospital, Federal Sergipe University, Aracaju, Brazil
| | - Fabricia Alvisi de Oliveira
- Health Science Graduate Program, Federal University of Sergipe, Aracaju, Brazil
- Laboratory of Molecular Biology, University Hospital, Federal Sergipe University, Aracaju, Brazil
| | - Alex Vianey Callado França
- Department of Medicine, University Hospital, Federal University of Sergipe, Aracaju, Brazil
- Hepatology Service, University Hospital, Federal University of Sergipe, Aracaju, Brazil
| | - Camilla Natália Oliveira Santos
- Health Science Graduate Program, Federal University of Sergipe, Aracaju, Brazil
- Laboratory of Molecular Biology, University Hospital, Federal Sergipe University, Aracaju, Brazil
| | - Lucas Sousa Magalhães
- Health Science Graduate Program, Federal University of Sergipe, Aracaju, Brazil
- Laboratory of Molecular Biology, University Hospital, Federal Sergipe University, Aracaju, Brazil
| | - Rodrigo Anselmo Cazzaniga
- Health Science Graduate Program, Federal University of Sergipe, Aracaju, Brazil
- Laboratory of Molecular Biology, University Hospital, Federal Sergipe University, Aracaju, Brazil
| | | | - Luciana Benevides
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Vanessa Carregaro
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - João Santana Silva
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | | | | | - Ângela Maria da Silva
- Health Science Graduate Program, Federal University of Sergipe, Aracaju, Brazil
- Department of Medicine, University Hospital, Federal University of Sergipe, Aracaju, Brazil
- Infectology Service, University Hospital, Federal University of Sergipe, Sergipe, Brazil
| | - Roque Pacheco de Almeida
- Health Science Graduate Program, Federal University of Sergipe, Aracaju, Brazil
- Laboratory of Molecular Biology, University Hospital, Federal Sergipe University, Aracaju, Brazil
- Department of Medicine, University Hospital, Federal University of Sergipe, Aracaju, Brazil
- Immunology Institute of Investigation (III), National Institute of Science and Technology (INCT), Brazilian Research and Technology Council (CNPq), São Paulo, Brazil
| | - Márcio Bezerra-Santos
- Health Science Graduate Program, Federal University of Sergipe, Aracaju, Brazil
- Laboratory of Molecular Biology, University Hospital, Federal Sergipe University, Aracaju, Brazil
- Department of Morphology, Federal University of Sergipe, São Cristóvão, Brazil
| | - Amélia Ribeiro de Jesus
- Health Science Graduate Program, Federal University of Sergipe, Aracaju, Brazil
- Laboratory of Molecular Biology, University Hospital, Federal Sergipe University, Aracaju, Brazil
- Department of Medicine, University Hospital, Federal University of Sergipe, Aracaju, Brazil
- Immunology Institute of Investigation (III), National Institute of Science and Technology (INCT), Brazilian Research and Technology Council (CNPq), São Paulo, Brazil
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9
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Franco KGS, de Amorim FJR, Santos MA, Rollemberg CVV, de Oliveira FA, França AVC, Santos CNO, Magalhães LS, Cazzaniga RA, de Lima FS, Benevides L, Carregaro V, Silva JS, Brito HLDF, Fernandes DA, da Silva ÂM, de Almeida RP, Bezerra-Santos M, de Jesus AR. Association of IL-9, IL-10, and IL-17 Cytokines With Hepatic Fibrosis in Human Schistosoma mansoni Infection. Front Immunol 2021; 12:779534. [PMID: 34970264 PMCID: PMC8712476 DOI: 10.3389/fimmu.2021.779534] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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: 09/19/2021] [Accepted: 11/15/2021] [Indexed: 02/05/2023] Open
Abstract
This is a case series study to evaluate immunological markers associated with schistosomiasis advanced fibrosis, including 69 patients from an endemic area from the State of Sergipe and from the Hepatology Service of the University Hospital in Sergipe, Brazil. Hepatic fibrosis was classified based on Niamey protocol for ultrasonography (US). Immune response to Schistosoma mansoni antigens was evaluated by stimulating peripheral blood mononuclear cells (PBMCs) from these patients with either adult worm (SWAP-10 μg/ml) or egg (SEA-10 μg/ml) antigens or purified protein derivative of turberculin (PPD-10 μg/ml) or phytohemagglutinin (PHA-1 μg/ml) for 72 h. The levels of IFN-γ, TNF-α, IL-5, IL-10, and IL-17 were measured in these supernatants by ELISA and IL-9 by Luminex. Single nucleotide polymorphisms in IL-17, IL10, and CD209 genes were genotyped using TaqMan probe by qPCR. Higher levels of IL-9, IL-10, and IL-17 were found in PBMC supernatants of patients with advanced hepatic fibrosis. Direct correlations were detected between IL-9 and IL-17 levels with US spleen sizes, portal vein diameters, and periportal thickening. The CD209 rs2287886 AG polymorphism patients produce higher IL-17 levels. Together, these data suggest a role of these cytokines in the immunopathogenesis of advanced fibrosis in human schistosomiasis.
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Affiliation(s)
- Karine Garcez Schuster Franco
- Image and Graphic Methods Unit, University Hospital, Federal Sergipe University, Aracaju, Brazil
- Health Science Graduate Program, Federal University of Sergipe, Aracaju, Brazil
| | - Fabio Jorge Ramalho de Amorim
- Health Science Graduate Program, Federal University of Sergipe, Aracaju, Brazil
- Laboratory of Molecular Biology, University Hospital, Federal Sergipe University, Aracaju, Brazil
| | - Mário Adriano Santos
- Department of Medicine, University Hospital, Federal University of Sergipe, Aracaju, Brazil
| | - Carla Virgínia Vieira Rollemberg
- Health Science Graduate Program, Federal University of Sergipe, Aracaju, Brazil
- Laboratory of Molecular Biology, University Hospital, Federal Sergipe University, Aracaju, Brazil
| | - Fabricia Alvisi de Oliveira
- Health Science Graduate Program, Federal University of Sergipe, Aracaju, Brazil
- Laboratory of Molecular Biology, University Hospital, Federal Sergipe University, Aracaju, Brazil
| | - Alex Vianey Callado França
- Department of Medicine, University Hospital, Federal University of Sergipe, Aracaju, Brazil
- Hepatology Service, University Hospital, Federal University of Sergipe, Aracaju, Brazil
| | - Camilla Natália Oliveira Santos
- Health Science Graduate Program, Federal University of Sergipe, Aracaju, Brazil
- Laboratory of Molecular Biology, University Hospital, Federal Sergipe University, Aracaju, Brazil
| | - Lucas Sousa Magalhães
- Health Science Graduate Program, Federal University of Sergipe, Aracaju, Brazil
- Laboratory of Molecular Biology, University Hospital, Federal Sergipe University, Aracaju, Brazil
| | - Rodrigo Anselmo Cazzaniga
- Health Science Graduate Program, Federal University of Sergipe, Aracaju, Brazil
- Laboratory of Molecular Biology, University Hospital, Federal Sergipe University, Aracaju, Brazil
| | | | - Luciana Benevides
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Vanessa Carregaro
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - João Santana Silva
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | | | | | - Ângela Maria da Silva
- Health Science Graduate Program, Federal University of Sergipe, Aracaju, Brazil
- Department of Medicine, University Hospital, Federal University of Sergipe, Aracaju, Brazil
- Infectology Service, University Hospital, Federal University of Sergipe, Sergipe, Brazil
| | - Roque Pacheco de Almeida
- Health Science Graduate Program, Federal University of Sergipe, Aracaju, Brazil
- Laboratory of Molecular Biology, University Hospital, Federal Sergipe University, Aracaju, Brazil
- Department of Medicine, University Hospital, Federal University of Sergipe, Aracaju, Brazil
- Immunology Institute of Investigation (III), National Institute of Science and Technology (INCT), Brazilian Research and Technology Council (CNPq), São Paulo, Brazil
| | - Márcio Bezerra-Santos
- Health Science Graduate Program, Federal University of Sergipe, Aracaju, Brazil
- Laboratory of Molecular Biology, University Hospital, Federal Sergipe University, Aracaju, Brazil
- Department of Morphology, Federal University of Sergipe, São Cristóvão, Brazil
| | - Amélia Ribeiro de Jesus
- Health Science Graduate Program, Federal University of Sergipe, Aracaju, Brazil
- Laboratory of Molecular Biology, University Hospital, Federal Sergipe University, Aracaju, Brazil
- Department of Medicine, University Hospital, Federal University of Sergipe, Aracaju, Brazil
- Immunology Institute of Investigation (III), National Institute of Science and Technology (INCT), Brazilian Research and Technology Council (CNPq), São Paulo, Brazil
- *Correspondence: Amélia Ribeiro de Jesus,
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10
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Silva MC, da Silva Medina T, Fuzo CA, Dias FC, Freitas-Castro F, Fukutani KF, Donadi EA, Cunha-Neto E, Cunha TM, Silva JS. Polymorphism in the catalytic subunit of the PI3Kγ gene is associated with Trypanosoma cruzi-induced chronic chagasic cardiomyopathy. Infect Genet Evol 2020; 88:104671. [PMID: 33301989 DOI: 10.1016/j.meegid.2020.104671] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 11/13/2020] [Accepted: 12/06/2020] [Indexed: 10/22/2022]
Abstract
Chagas disease is caused by the protozoan parasite Trypanosoma cruzi. During the chronic phase of disease, while most infected people do not present symptoms, characterizing the asymptomatic form, some patients develop the cardiac form or chronic chagasic cardiomyopathy, which is considered the most severe manifestation of this disease. Considering that the activation of the PI3Kγ signaling pathway is essential for an efficient immune response against T. cruzi infection, we evaluated the PIK3CG C > T (rs1129293) polymorphism in exon 3 of this gene, which encodes the catalytic subunit of PI3Kγ. The PIK3CG CT and TT genotypes were found to be associated with an increased risk of developing the cardiac form of the disease rather than the asymptomatic or digestive forms. In conclusion, the presence of the T allele at single or double doses may differentiate the cardiac from other clinical manifestations of Chagas disease. This finding should help in further studies to evaluate the mechanisms underlying the differential association of PIK3CG in Chagas disease.
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Affiliation(s)
- Maria Cláudia Silva
- Department of Biochemistry and Immunology of Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Tiago da Silva Medina
- Department of Biochemistry and Immunology of Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil; International Research Center, A.C. Camargo Cancer Center, São Paulo, Brazil
| | - Carlos Alessandro Fuzo
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Fabrício Cesar Dias
- Division of Clinical Immunology, Department of Medicine, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Felipe Freitas-Castro
- Department of Cell and Molecular Biology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Kiyoshi Ferreira Fukutani
- Department of Biochemistry and Immunology of Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Eduardo Antônio Donadi
- Division of Clinical Immunology, Department of Medicine, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Edecio Cunha-Neto
- Laboratory of Immunology, Heart Institute, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Thiago Mattar Cunha
- Department of Pharmacology of Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
| | - João Santana Silva
- Department of Biochemistry and Immunology of Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil; Fiocruz-Bi-Institutional Translational Medicine Plataform, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
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11
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Elias-Oliveira J, Leite JA, Pereira ÍS, Guimarães JB, Manso GMDC, Silva JS, Tostes RC, Carlos D. NLR and Intestinal Dysbiosis-Associated Inflammatory Illness: Drivers or Dampers? Front Immunol 2020; 11:1810. [PMID: 32903730 PMCID: PMC7438795 DOI: 10.3389/fimmu.2020.01810] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 07/07/2020] [Indexed: 12/12/2022] Open
Abstract
The intestinal microbiome maintains a close relationship with the host immunity. This connection fosters a health state by direct and indirect mechanisms. Direct influences occur mainly through the production of short-chain fatty acids (SCFAs), gastrointestinal hormones and precursors of bioactive molecules. Indirect mechanisms comprise the crosstalk between bacterial products and the host's innate immune system. Conversely, intestinal dysbiosis is a condition found in a large number of chronic intestinal inflammatory diseases, such as ulcerative colitis and Crohn's disease, as well as in diseases associated with low-grade inflammation, such as obesity, type 1 and 2 diabetes mellitus and cardiovascular diseases. NOD-Like receptors (NLRs) are cytoplasmic receptors expressed by adaptive and innate immune cells that form a multiprotein complex, termed the inflammasome, responsible for the release of mature interleukin (IL)-1β and IL-18. NLRs are also involved in the recognition of bacterial components and production of antimicrobial molecules that shape the gut microbiota and maintain the intestinal homeostasis. Recent novel findings show that NLRs may act as positive or negative regulators of inflammation by modulating NF-κB activation. This mini-review presents current and updated evidence on the interplay between NLRs and gut microbiota and their dual role, contributing to progression or conferring protection, in diabetes and other inflammatory diseases.
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Affiliation(s)
- Jefferson Elias-Oliveira
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Jefferson Antônio Leite
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Ítalo Sousa Pereira
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Jhefferson Barbosa Guimarães
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Gabriel Martins da Costa Manso
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - João Santana Silva
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Rita Cássia Tostes
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Daniela Carlos
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
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12
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Sesti-Costa R, Cervantes-Barragan L, Swiecki MK, Fachi JL, Cella M, Gilfillan S, Silva JS, Colonna M. Leukemia Inhibitory Factor Inhibits Plasmacytoid Dendritic Cell Function and Development. J Immunol 2020; 204:2257-2268. [PMID: 32169845 DOI: 10.4049/jimmunol.1900604] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 02/13/2020] [Indexed: 12/11/2022]
Abstract
Plasmacytoid dendritic cells (pDCs) produce abundant type I IFNs (IFN-I) in response to viral nucleic acids. Generation of pDCs from bone marrow dendritic cell (DC) progenitors and their maintenance is driven by the transcription factor E2-2 and inhibited by its repressor Id2. In this study, we find that mouse pDCs selectively express the receptor for LIF that signals through STAT3. Stimulation of pDCs with LIF inhibited IFN-I, TNF, and IL-6 responses to CpG and induced expression of the STAT3 targets SOCS3 and Bcl3, which inhibit IFN-I and NF-κB signaling. Moreover, although STAT3 has been also reported to induce E2-2, LIF paradoxically induced its repressor Id2. A late-stage bone marrow DC progenitor expressed low amounts of LIFR and developed into pDCs less efficiently after being exposed to LIF, consistent with the induction of Id2. Conversely, pDC development and serum IFN-I responses to lymphocytic choriomeningitis virus infection were augmented in newly generated mice lacking LIFR in either CD11c+ or hematopoietic cells. Thus, an LIF-driven STAT3 pathway induces SOCS3, Bcl3, and Id2, which render pDCs and late DC progenitors refractory to physiological stimuli controlling pDC functions and development. This pathway can be potentially exploited to prevent inappropriate secretion of IFN-I in autoimmune diseases or promote IFN-I secretion during viral infections.
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Affiliation(s)
- Renata Sesti-Costa
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110; and.,Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil 14049-900
| | - Luisa Cervantes-Barragan
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110; and
| | - Melissa K Swiecki
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110; and
| | - José Luís Fachi
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110; and
| | - Marina Cella
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110; and
| | - Susan Gilfillan
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110; and
| | - João Santana Silva
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil 14049-900
| | - Marco Colonna
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110; and
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13
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Ketelut-Carneiro N, Souza COS, Benevides L, Gardinassi LG, Silva MC, Tavares LA, Zamboni DS, Silva JS. Caspase-11-dependent IL-1α release boosts Th17 immunity against Paracoccidioides brasiliensis. PLoS Pathog 2019; 15:e1007990. [PMID: 31425553 PMCID: PMC6715237 DOI: 10.1371/journal.ppat.1007990] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 08/29/2019] [Accepted: 07/18/2019] [Indexed: 12/22/2022] Open
Abstract
The granulomatous lesion resulting from infection with the fungus Paracoccidioides brasiliensis is characterized by a compact aggregate of mature cells, surrounded by a fibroblast- and collagen-rich content. Granuloma formation requires signaling elicited by inflammatory molecules such as members of the interleukin-1 family. Two members of this family have been thoroughly studied, namely IL-1α and IL-1β. In this study, we addressed the mechanisms underlying IL-1α secretion and its functional role on the host resistance to fungal infection. We found that, the expression of caspase-11 triggered by P. brasiliensis infection of macrophages depends on IFN-β production, because its inhibition reduced procaspase-11 levels. Curiously, caspase-11 deficiency did not impair IL-1β production, however caspase-11 was required for a rapid pore-mediated cell lysis. The plasma membrane rupture facilitated the release of IL-1α, which was necessary to induce NO production and restrict fungal replication. Furthermore, P. brasiliensis-infected macrophages required IL-1α to produce optimal levels of IL-6, a major component of Th17 lymphocyte differentiation. Indeed, IL-1α deficiency accounted for a significant reduction of Th17 lymphocytes in lungs of infected mice, correlating with diminished neutrophil infiltration in the lungs. Strikingly, we identified that IL-1α directly reprograms the transcriptional profile of Th17-committed lymphocytes, increasing cellular proliferation, as for boosting IL-17 production by these cells. Beyond neutrophil chemotaxis in vivo, IL-17 also amplified IL-1α production by infected macrophages in vitro, endorsing a critical amplification loop of the inflammatory response. Therefore, our data suggest that the IFN-β/caspase-11/IL-1α pathway shapes a protective antifungal Th17 immunity, revealing a molecular mechanism underlying the cross-talk between innate and adaptive immunity.
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Affiliation(s)
- Natália Ketelut-Carneiro
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Camila Oliveira Silva Souza
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Luciana Benevides
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Luiz Gustavo Gardinassi
- Department of Clinical Analyses, Toxicology and Food Science, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Maria Cláudia Silva
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Lucas Alves Tavares
- Department of Cell Biology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Dario Simões Zamboni
- Department of Cell Biology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - João Santana Silva
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
- Fiocruz-Bi-Institutional Translational Medicine Project, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, SP, Brazil
- * E-mail:
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de Souza PR, Guimarães FR, Sales-Campos H, Bonfá G, Nardini V, Chica JEL, Turato WM, Silva JS, Zamboni DS, Cardoso CRDB. Absence of NOD2 receptor predisposes to intestinal inflammation by a deregulation in the immune response in hosts that are unable to control gut dysbiosis. Immunobiology 2018; 223:577-585. [DOI: 10.1016/j.imbio.2018.07.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 06/26/2018] [Accepted: 07/02/2018] [Indexed: 12/27/2022]
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Maia PIDS, Carneiro ZA, Lopes CD, Oliveira CG, Silva JS, de Albuquerque S, Hagenbach A, Gust R, Deflon VM, Abram U. Organometallic gold(iii) complexes with hybrid SNS-donating thiosemicarbazone ligands: cytotoxicity and anti-Trypanosoma cruzi activity. Dalton Trans 2018; 46:2559-2571. [PMID: 28154849 DOI: 10.1039/c6dt04307k] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Stable organogold(iii) compounds of the composition [AuIII(Hdamp)(L1)]Cl are formed from reactions of [AuCl2(damp)] with H2L1 (damp- = dimethylaminomethylphenyl; H2L1 = N'-(diethylcarbamothioyl)benzimidothiosemicarbazides). The cationic complexes can be neutralized by reactions with weak bases under the formation of [AuIII(damp)(L1)] compounds. The structures of the products show interesting features like relatively short AuH contacts between the methylene protons of the Hdamp ligand and the gold(iii) ions. Preliminary biological studies on the uncoordinated compounds H2L1 and their gold complexes indicate considerable cytotoxicity for the [AuIII(Hdamp)(L1)]Cl complexes against MCF-7 cells. The in vitro trypanocidal activity was evaluated against the intracellular form of Trypanosoma cruzi. The organometallic complexes display a remarkable activity, which is dependent on the alkyl substituents of the thiosemicarbazone building blocks of the ligands. One representative of the cationic [AuIII(Hdamp)(L1)]Cl complexes, where H2L1 contains a dimethylthiosemicarbazide building block, shows a trypanocidal activity against the intracellular amastigote form in the same order of magnitude as that of the standard drug benznidazole. Furthermore, no appreciable toxicity to mice spleen cells is observed for this compound resulting in a therapeutic index of about 30, which strongly recommends it as a promising candidate for the development of a future antiparasitic drug.
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Affiliation(s)
- P I da S Maia
- Departamento de Química, Universidade Federal do Triângulo Mineiro, 38025-440, Uberaba, MG, Brazil.
| | - Z A Carneiro
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto - FCFRP-USP, Universidade de São Paulo, Avenida do Café s/n, 14040-903, Ribeirão Preto, SP, Brazil and Department of Biochemistry and Immunology, School of Medicine, University of São Paulo, Av. Bandeirantes 3900, 14040-900, Ribeirão Preto, SP, Brazil
| | - C D Lopes
- Department of Biochemistry and Immunology, School of Medicine, University of São Paulo, Av. Bandeirantes 3900, 14040-900, Ribeirão Preto, SP, Brazil
| | - C G Oliveira
- Instituto de Química de São Carlos, Universidade de São Paulo, Av. Trabalhador São Carlense, 400, 13566-590, São Carlos, SP, Brazil
| | - J S Silva
- Department of Biochemistry and Immunology, School of Medicine, University of São Paulo, Av. Bandeirantes 3900, 14040-900, Ribeirão Preto, SP, Brazil
| | - S de Albuquerque
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto - FCFRP-USP, Universidade de São Paulo, Avenida do Café s/n, 14040-903, Ribeirão Preto, SP, Brazil
| | - A Hagenbach
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Fabeckstr. 34-36, D-14195 Berlin, Germany.
| | - R Gust
- Freie Universität Berlin, Institute of Pharmacy, Königin-Luise-Str. 2+4, 14195 Berlin, Germany
| | - V M Deflon
- Instituto de Química de São Carlos, Universidade de São Paulo, Av. Trabalhador São Carlense, 400, 13566-590, São Carlos, SP, Brazil
| | - U Abram
- Freie Universität Berlin, Institute of Chemistry and Biochemistry, Fabeckstr. 34-36, D-14195 Berlin, Germany.
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16
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Benevides L, Costa RS, Tavares LA, Russo M, Martins GA, da Silva LLP, Arruda LK, Cunha FQ, Carregaro V, Silva JS. B lymphocyte-induced maturation protein 1 controls T H9 cell development, IL-9 production, and allergic inflammation. J Allergy Clin Immunol 2018; 143:1119-1130.e3. [PMID: 30096391 DOI: 10.1016/j.jaci.2018.06.046] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 05/08/2018] [Accepted: 06/29/2018] [Indexed: 12/24/2022]
Abstract
BACKGROUND The transcriptional repressor B lymphocyte-induced maturation protein 1 (Blimp-1) has a key role in terminal differentiation in various T-cell subtypes. However, whether Blimp-1 regulates TH9 differentiation and its role in allergic inflammation are unknown. OBJECTIVE We aimed to investigate the role of Blimp-1 in TH9 differentiation and in the pathogenesis of allergic airway inflammation. METHODS In vitro TH9 differentiation, flow cytometry, ELISA, and real-time PCR were used to investigate the effects of Blimp-1 on TH9 polarization. T cell-specific Blimp-1-deficient mice, a model of allergic airway inflammation, and T-cell adoptive transfer to recombination-activating gene 1 (Rag-1)-/- mice were used to address the role of Blimp-1 in the pathogenesis of allergic inflammation. RESULTS We found that Blimp-1 regulates TH9 differentiation because deleting Blimp-1 increased IL-9 production in CD4+ T cells in vitro. In addition, we showed that in T cell-specific Blimp-1-deficient mice, deletion of Blimp-1 in T cells worsened airway disease, and this worsening was inhibited by IL-9 neutralization. In asthmatic patients CD4+ T cells in response to TGF-β plus IL-4 increased IL-9 expression and downregulated Blimp-1 expression compared with expression in healthy control subjects. Blimp-1 overexpression in human TH9 cells inhibited IL-9 expression. CONCLUSION Blimp-1 is a pivotal negative regulator of TH9 differentiation and controls allergic inflammation.
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Affiliation(s)
- Luciana Benevides
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School University of São Paulo, Ribeirão Preto, Brazil
| | - Renata Sesti Costa
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School University of São Paulo, Ribeirão Preto, Brazil
| | - Lucas Alves Tavares
- Department of Cellular and Molecular Biology, Ribeirão Preto Medical School University of São Paulo, Ribeirão Preto, Brazil
| | - Momtchilo Russo
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo
| | - Gislâine A Martins
- F. Widjaja Foundation Inflammatory Bowel and Immunobiology Research Institute and Department of Medicine and Biomedical Science, Cedars-Sinai Medical Center (CSMC), Los Angeles, Calif
| | - Luis Lamberti P da Silva
- Department of Cellular and Molecular Biology, Ribeirão Preto Medical School University of São Paulo, Ribeirão Preto, Brazil
| | - L Karla Arruda
- Department of Clinical Medicine, Clinical Hospital of Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Fernando Q Cunha
- Department of Pharmacology, Ribeirão Preto Medical School University of São Paulo, Ribeirão Preto, Brazil
| | - Vanessa Carregaro
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School University of São Paulo, Ribeirão Preto, Brazil
| | - João Santana Silva
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School University of São Paulo, Ribeirão Preto, Brazil; Fiocruz-Bi-Institutional Translational Medicine Platform, Ribeirão Preto, Brazil.
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Santos LX, Almeida DRS, Silva JS, Rizental ACMF, Goes5 PAS, Figueiredo N. A Web-Based Tool for Monitoring and Evaluating Health Care Services: An Analysis of Centers for Dental Specialties Webpage. Pesqui bras odontopediatria clín integr 2018. [DOI: 10.4034/pboci.2018.181.59] [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: 11/15/2022] Open
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18
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Pinheiro CR, Coelho AL, de Oliveira CE, Gasparoto TH, Garlet GP, Silva JS, Santos CF, Cavassani KA, Hogaboam CM, Campanelli AP. Recognition of Candida albicans by gingival fibroblasts: The role of TLR2, TLR4/CD14, and MyD88. Cytokine 2017; 106:67-75. [PMID: 29128406 DOI: 10.1016/j.cyto.2017.10.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [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: 08/04/2017] [Revised: 10/09/2017] [Accepted: 10/11/2017] [Indexed: 12/12/2022]
Abstract
Recent evidence indicates that nonprofessional immune cells such as epithelial cells, endothelial cells, and fibroblasts also contribute to innate immunity via secretion of cytokines. Fibroblasts are the principal type of cell found in the periodontal connective tissues and they are involved in the immune response during periodontal disease. The role of fibroblasts in the recognition of pathogens via Toll-like receptors (TLRs) has been established; however, few studies have been conducted concerning the involvement of innate immune receptors in the recognition of Candida albicans by gingival fibroblast. In the current study, we investigate the functional activity of TLR2, cluster of differentiation 14 (CD14), and myeloid differentiation primary response gene 88 (MyD88) molecules in the recognition of C. albicans by gingival fibroblast. First, we identified that gingival fibroblasts expressed TLR2, TLR3, and TLR4. Our results showed that TLR agonists had no effect on these receptors' expression by TLR2, MyD88, and CD14-deficient cells. Notably, C. albicans and a synthetic triacylated lipoprotein (Pam3CSK4) induced a remarkable increase of TLR3 expression on MyD88-deficient gingival fibroblasts. TLR4 expression levels were lower than TLR2 and TLR3 levels and remained unchanged after TLR agonist stimulation. Gingival fibroblasts presented morphological similarities; however, TLR2 deficiency on these cells leads to a lower proliferative response, whereas the deficiency on CD14 expression resulted in lower levels of type I collagen by these cells. In addition, the recognition of C. albicans by gingival fibroblasts had an effect on the secretion of cytokines and it was dependent on a specific recognition molecule. Specifically, tumor necrosis factor-α (TNF-α) production after the recognition of C. albicans was dependent on MyD88, CD14, and TLR2 molecules, whereas the production of interleukin-1β (IL-1β) and IL-13 was dependent on TLR2. These findings are the first to describe a role of gingival fibroblast in the recognition of C. albicans and the pathways involved in this process. An understanding of these pathways may lead to alternative treatments for patients with periodontal disease.
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Affiliation(s)
- Claudia Ramos Pinheiro
- Department of Biological Sciences, Bauru School of Dentistry - University of São Paulo, Bauru, SP, Brazil
| | - Ana Lúcia Coelho
- Department of Medicine, Advanced Health Sciences Pavilion, Cedars Sinai Medical Center, Los Angeles, CA, USA
| | | | - Thaís Helena Gasparoto
- Department of Biological Sciences, Bauru School of Dentistry - University of São Paulo, Bauru, SP, Brazil
| | - Gustavo Pompermaier Garlet
- Department of Biological Sciences, Bauru School of Dentistry - University of São Paulo, Bauru, SP, Brazil
| | - João Santana Silva
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto - University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Carlos Ferreira Santos
- Department of Biological Sciences, Bauru School of Dentistry - University of São Paulo, Bauru, SP, Brazil
| | - Karen Angélica Cavassani
- Department of Medicine, Advanced Health Sciences Pavilion, Cedars Sinai Medical Center, Los Angeles, CA, USA
| | - Cory M Hogaboam
- Department of Medicine, Advanced Health Sciences Pavilion, Cedars Sinai Medical Center, Los Angeles, CA, USA
| | - Ana Paula Campanelli
- Department of Biological Sciences, Bauru School of Dentistry - University of São Paulo, Bauru, SP, Brazil.
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Sesti-Costa R, Françozo MCS, Silva GK, Proenca-Modena JL, Silva JS. TLR3 is required for survival following Coxsackievirus B3 infection by driving T lymphocyte activation and polarization: The role of dendritic cells. PLoS One 2017; 12:e0185819. [PMID: 28973047 PMCID: PMC5626506 DOI: 10.1371/journal.pone.0185819] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 09/20/2017] [Indexed: 11/21/2022] Open
Abstract
Type B coxsackievirus (CVB) is a common cause of acute and chronic myocarditis, meningitis and pancreatitis, often leading to heart failure and pancreatic deficiency. The polarization of CD4+ T lymphocytes and their cytokine milieu are key factors in the outcome of CVB-induced diseases. Thus, sensing the virus and driving the adaptive immune response are essential for the establishment of a protective immune response. TLR3 is a crucial virus recognition receptor that confers the host with resistance to CVB infection. In the current study, we found that TLR3 expression in dendritic cells plays a role in their activation upon CVB3 infection in vitro, as TLR3-deficient dendritic cells up-regulate CD80 and CD86 to a less degree than WT cells. Instead, they up-regulated the inhibitory molecule PD-L1 and secreted considerably lower levels of TNF-α and IL-10 and a higher level of IL-23. T lymphocyte proliferation in co-culture with CVB3-infected dendritic cells was increased by TLR3-expressing DCs and other cells. Furthermore, in the absence of TLR3, the T lymphocyte response was shifted toward a Th17 profile, which was previously reported to be deleterious for the host. TLR3-deficient mice were very susceptible to CVB3 infection, with increased pancreatic injury and extensive inflammatory infiltrate in the heart that was associated with uncontrolled viral replication. Adoptive transfer of TLR3+ dendritic cells slightly improved the survival of TLR-deficient mice following CVB3 infection. Therefore, our findings highlight the importance of TLR3 signaling in DCs and in other cells to induce activation and polarization of the CD4+ T lymphocyte response toward a Th1 profile and consequently for a better outcome of CVB3 infection. These data provide new insight into the immune-mediated mechanisms by which CVBs are recognized and cleared in order to prevent the development of myocarditis and pancreatitis and may contribute to the design of therapies for enteroviral infections.
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Affiliation(s)
- Renata Sesti-Costa
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Marcela Cristina Santiago Françozo
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
- Institute of Infection Immunology, TWINCORE, Centre for Experimental and Clinical Infection Research GmbH, Hannover, Germany
| | - Grace Kelly Silva
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - José Luiz Proenca-Modena
- Department of Genetics, Evolution and Bioagents, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - João Santana Silva
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
- * E-mail:
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20
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Medina TS, Oliveira GG, Silva MC, David BA, Silva GK, Fonseca DM, Sesti-Costa R, Frade AF, Baron MA, Ianni B, Pereira AC, Chevillard C, Cunha-Neto E, Marin-Neto JA, Silva JS. Ebi3 Prevents Trypanosoma cruzi-Induced Myocarditis by Dampening IFN-γ-Driven Inflammation. Front Immunol 2017; 8:1213. [PMID: 29033934 PMCID: PMC5626942 DOI: 10.3389/fimmu.2017.01213] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Accepted: 09/13/2017] [Indexed: 12/22/2022] Open
Abstract
The identification of anti-inflammatory mediators can reveal important targetable molecules capable of counterbalancing Trypanosoma cruzi-induced myocarditis. Composed of Ebi3 and IL-27p28 subunits, IL-27 is produced by myeloid cells and is able to suppress inflammation by inducing IL-10-producing Tr1 cells, thus emerging as a potential candidate to ameliorate cardiac inflammation induced by T. cruzi. Although IL-27 has been extensively characterized as a suppressive cytokine that prevents liver immunopathogenesis after T. cruzi infection, the mechanisms underlying its effects on T. cruzi-induced myocarditis remain largely unknown. Here, wild-type (WT) and Ebi3-deficient animals were intraperitoneally infected with trypomastigotes of T. cruzi Y strain and used to evaluate the potential anti-inflammatory properties of Ebi3 during T. cruzi infection. The survival rates of mice were daily recorded, the frequency of inflammatory cells was analyzed by flow cytometry and inflammatory mediators were measured by ELISA, real-time PCR and PCR array. We reported that T. cruzi-induced myocarditis was prevented by Ebi3. Stressors mainly recognized by TLR2 and TLR4 receptors on myeloid cells were essential to trigger IL-27p28 production. In addition, Ebi3 regulated IFN-γ-mediated myocarditis by promoting an anti-inflammatory environment through IL-10, which was most likely produced by Tr1 cells rather than classical regulatory T cells (Tregs), in the heart tissue of T. cruzi-infected animals. Furthermore, in vivo IFN-γ blockade ameliorated the host survival without compromising the parasite control in the bloodstream. In humans, IL-27p28 was correlated with cardiac protection during Chagas disease. Patients with mild clinical forms of the disease produced high levels of IL-27p28, whereas lower levels were found in those with severe forms. In addition, polymorphic sites at Ebi3 gene were associated with severe cardiomyopathy in patients with Chagas disease. Collectively, we describe a novel regulatory mechanism where Ebi3 dampens cardiac inflammation by modulating the overproduction of IFN-γ, the bona fide culprit of Chagas disease cardiomyopathy.
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Affiliation(s)
- Tiago Silva Medina
- Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | | | - Maria Cláudia Silva
- Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Bruna Araújo David
- Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Grace Kelly Silva
- Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | | | - Renata Sesti-Costa
- Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Amanda Farage Frade
- Medical School/Heart Institute, University of São Paulo, São Paulo, Brazil.,Department of Bioengineering, Brazil University, São Paulo, Brazil
| | | | - Barbara Ianni
- Medical School/Heart Institute, University of São Paulo, São Paulo, Brazil
| | | | | | - Edécio Cunha-Neto
- Medical School/Heart Institute, University of São Paulo, São Paulo, Brazil
| | | | - João Santana Silva
- Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
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21
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de Oliveira CE, Gasparoto TH, Pinheiro CR, Amôr NG, Nogueira MRS, Kaneno R, Garlet GP, Lara VS, Silva JS, Cavassani KA, Campanelli AP. CCR5-Dependent Homing of T Regulatory Cells to the Tumor Microenvironment Contributes to Skin Squamous Cell Carcinoma Development. Mol Cancer Ther 2017; 16:2871-2880. [DOI: 10.1158/1535-7163.mct-17-0341] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 08/14/2017] [Accepted: 09/07/2017] [Indexed: 11/16/2022]
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22
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Tristão FSM, Rocha FA, Carlos D, Ketelut-Carneiro N, Souza COS, Milanezi CM, Silva JS. Th17-Inducing Cytokines IL-6 and IL-23 Are Crucial for Granuloma Formation during Experimental Paracoccidioidomycosis. Front Immunol 2017; 8:949. [PMID: 28871251 PMCID: PMC5566564 DOI: 10.3389/fimmu.2017.00949] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 07/25/2017] [Indexed: 01/06/2023] Open
Abstract
Paracoccidioidomycosis (PCM), a chronic granulomatous disease caused by the thermally dimorphic fungus Paracoccidioides brasiliensis and Paracoccidioides lutzii, has the highest mortality rate among systemic mycosis. The T helper 1-mediated immunity is primarily responsible for acquired resistance during P. brasiliensis infection, while susceptibility is associated with Th2 occurrence. Th17 is a population of T CD4+ cells that, among several chemokines and cytokines, produces IL-17A and requires the presence of IL-1, IL-6, and TGF-β for differentiation in mice and IL-23 for its maintenance. Th17 has been described as an arm of the immune system that enhances host protection against several bacterial and fungal infections, as Pneumocystis carinii and Candida albicans. In this study, we aimed to evaluate the Th17 immune response and the role of Th17-associated cytokines (IL-6, IL-23, and IL-17A) during experimental PCM. First, we observed that P. brasiliensis infection [virulent yeast strain 18 of P. brasiliensis (Pb18)] increased the IL-17A production in vitro and all the evaluated Th17-associated cytokines in the lung tissue from C57BL/6 wild-type mice. In addition, the deficiency of IL-6, IL-23, or IL-17 receptor A (IL-17RA) impaired the compact granuloma formation and conferred susceptibility during infection, associated with reduced tumor necrosis factor-α, IFN-γ, and inducible nitric oxide synthase enzyme expression. Our data suggest that IL-6 production by bone marrow-derived macrophages (BMDMs) is important to promote the Th17 differentiation during Pb18 infection. In accordance, the adoptive transfer of BMDMs from C57BL/6 to infected IL-6-/- or IL-17RA-/- mice reduced the fungal burden in the lungs compared to nontransferred mice and reestablished the pulmonary granuloma formation. Taken together, these results suggest that Th17-associated cytokines are involved in the modulation of immune response and granuloma formation during experimental PCM.
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Affiliation(s)
- Fabrine Sales Massafera Tristão
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Fernanda Agostini Rocha
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Daniela Carlos
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Natália Ketelut-Carneiro
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Camila Oliveira Silva Souza
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Cristiane Maria Milanezi
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - João Santana Silva
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
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Santos MB, de Oliveira DT, Cazzaniga RA, Varjão CS, Dos Santos PL, Santos MLB, Correia CB, Faria DR, Simon MDV, Silva JS, Dutra WO, Reed SG, Duthie MS, de Almeida RP, de Jesus AR. Distinct Roles of Th17 and Th1 Cells in Inflammatory Responses Associated with the Presentation of Paucibacillary Leprosy and Leprosy Reactions. Scand J Immunol 2017; 86:40-49. [PMID: 28426172 DOI: 10.1111/sji.12558] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 04/13/2017] [Indexed: 01/08/2023]
Abstract
It is well established that helper T cell responses influence resistance or susceptibility to Mycobacterium leprae infection, but the role of more recently described helper T cell subsets in determining severity is less clear. To investigate the involvement of Th17 cells in the pathogenesis of leprosy, we determined the immune profile with variant presentations of leprosy. Firstly, IL-17A, IFN-γ and IL-10 were evaluated in conjunction with CD4+ T cell staining by confocal microscopy of lesion biopsies from tuberculoid (TT) and lepromatous leprosy (LL) patients. Secondly, inflammatory cytokines were measured by multiplex assay of serum samples from Multibacillary (MB, n = 28) and Paucibacillary (PB, n = 23) patients and household contacts (HHC, n = 23). Patients with leprosy were also evaluated for leprosy reaction occurrence: LR+ (n = 8) and LR- (n = 20). Finally, peripheral blood mononuclear cells were analysed by flow cytometry used to determine the phenotype of cytokine-producing cells. Lesions from TT patients were found to have more CD4+ IL-17A+ cells than those from LL patients. Higher concentrations of IL-17A and IL-1β were observed in serum from PB than MB patients. The highest serum IFN-γ concentrations were, however, detected in sera from MB patients that developed leprosy reactions (MB LR+ ). Together, these results indicate that Th1 cells were associated with both the PB presentation and also with leprosy reactions. In contrast, Th17 cells were associated with an effective inflammatory response that is present in the PB forms but were not predictive of leprosy reactions in MB patients.
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Affiliation(s)
- M B Santos
- Laboratory of Molecular Biology, Universidade Federal de Sergipe (UFS), Sao Cristovao, Brazil.,Infectious Diseases Research Institute (IDRI), Seattle, WA, USA
| | - D T de Oliveira
- Laboratory of Molecular Biology, Universidade Federal de Sergipe (UFS), Sao Cristovao, Brazil
| | - R A Cazzaniga
- Laboratory of Molecular Biology, Universidade Federal de Sergipe (UFS), Sao Cristovao, Brazil
| | - C S Varjão
- Laboratory of Molecular Biology, Universidade Federal de Sergipe (UFS), Sao Cristovao, Brazil
| | - P L Dos Santos
- Laboratory of Molecular Biology, Universidade Federal de Sergipe (UFS), Sao Cristovao, Brazil
| | - M L B Santos
- Laboratory of Molecular Biology, Universidade Federal de Sergipe (UFS), Sao Cristovao, Brazil
| | - C B Correia
- Laboratory of Molecular Biology, Universidade Federal de Sergipe (UFS), Sao Cristovao, Brazil
| | - D R Faria
- Laboratory of Biologia das Interações Celulares, Department of Morphology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - M do V Simon
- Laboratory of Molecular Biology, Universidade Federal de Sergipe (UFS), Sao Cristovao, Brazil
| | - J S Silva
- Department of Biochemistry and Immunology, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (FMRP-USP), Ribeirão Preto, Brazil
| | - W O Dutra
- Laboratory of Biologia das Interações Celulares, Department of Morphology, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - S G Reed
- Infectious Diseases Research Institute (IDRI), Seattle, WA, USA
| | - M S Duthie
- Infectious Diseases Research Institute (IDRI), Seattle, WA, USA
| | - R P de Almeida
- Laboratory of Molecular Biology, Universidade Federal de Sergipe (UFS), Sao Cristovao, Brazil.,Departament of Medicine (UFS), Sergipe, Brazil.,Instituto de Investigacão em Imunologia, INCT, CNPq, São Paulo, Brazil
| | - A R de Jesus
- Laboratory of Molecular Biology, Universidade Federal de Sergipe (UFS), Sao Cristovao, Brazil.,Departament of Medicine (UFS), Sergipe, Brazil.,Instituto de Investigacão em Imunologia, INCT, CNPq, São Paulo, Brazil
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24
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Abstract
The inflammatory oral diseases are characterized by the persistent migration of polymorphonuclear leukocytes, monocytes, lymphocytes, plasma and mast cells, and osteoblasts and osteoclasts. In the last decade, there has been a great interest in the mediators responsible for the selective recruitment and activation of these cell types at inflammatory sites. Of these mediators, the chemokines have received particular attention in recent years. Chemokine messages are decoded by specific receptors that initiate signal transduction events, leading to a multitude of cellular responses, including chemotaxis and activation of inflammatory and bone cells. However, little is known about their role in the pathogenesis of inflammatory oral diseases. The purpose of this review is to summarize the findings regarding the role of chemokines in periapical and periodontal tissue inflammation, and the integration, into experimental models, of the information about the role of chemokines in human diseases.
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Affiliation(s)
- T A Silva
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, CEP 31.270-901, Belo Horizonte, Minas Gerais, Brazil.
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25
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Bertolini TB, de Souza AI, Gembre AF, Piñeros AR, Prado RDQ, Silva JS, Ramalho LNZ, Bonato VLD. Genetic background affects the expansion of macrophage subsets in the lungs of Mycobacterium tuberculosis-infected hosts. Immunology 2016; 148:102-13. [PMID: 26840507 DOI: 10.1111/imm.12591] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [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: 12/14/2015] [Revised: 01/27/2016] [Accepted: 01/28/2016] [Indexed: 12/24/2022] Open
Abstract
M1 macrophages are more effective in the induction of the inflammatory response and clearance of Mycobacterium tuberculosis than M2 macrophages. Infected C57BL/6 mice generate a stronger cellular immune response compared with BALB/c mice. We hypothesized that infected C57BL/6 mice would exhibit a higher frequency and function of M1 macrophages than infected BALB/c mice. Our findings show a higher ratio of macrophages to M2 macrophages in the lungs of chronically infected C57BL/6 mice compared with BALB/c mice. However, there was no difference in the functional ability of M1 and M2 macrophages for the two strains in vitro. In vivo, a deleterious role for M2 macrophages was confirmed by M2 cell transfer, which rendered the infected C57BL/6, but not the BALB/c mice, more susceptible and resulted in mild lung inflammation compared with C57BL/6 mice that did not undergo cell transfer. M1 cell transfer induced a higher inflammatory response, although not protective, in infected BALB/c mice compared with their counterparts that did not undergo cell transfer. These findings demonstrate that an inflammation mediated by M1 macrophages may not induce bacterial tolerance because protection depends on the host genetic background, which drives the magnitude of the inflammatory response against M. tuberculosis in the pulmonary microenvironment. The contribution of our findings is that although M1 macrophage is an effector leucocyte with microbicidal machinery, its dominant role depends on the balance of M1 and M2 subsets, which is driven by the host genetic background.
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Affiliation(s)
- Thais Barboza Bertolini
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Alexandre Ignacio de Souza
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Ana Flávia Gembre
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Annie Rocio Piñeros
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Rafael de Queiroz Prado
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - João Santana Silva
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | | | - Vânia Luiza Deperon Bonato
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
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26
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Dias-Teixeira KL, Pereira RM, Silva JS, Fasel N, Aktas BH, Lopes UG. Unveiling the Role of the Integrated Endoplasmic Reticulum Stress Response in Leishmania Infection - Future Perspectives. Front Immunol 2016; 7:283. [PMID: 27499755 PMCID: PMC4956655 DOI: 10.3389/fimmu.2016.00283] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 07/13/2016] [Indexed: 01/15/2023] Open
Abstract
The integrated endoplasmic reticulum stress response (IERSR) is an evolutionarily conserved adaptive mechanism that ensures endoplasmic reticulum (ER) homeostasis and cellular survival in the presence of stress including nutrient deprivation, hypoxia, and imbalance of Ca(+) homeostasis, toxins, and microbial infection. Three transmembrane proteins regulate integrated signaling pathways that comprise the IERSR, namely, IRE-1 that activates XBP-1, the pancreatic ER kinase (PERK) that phosphorylates the eukaryotic translation initiation factor 2 and transcription factor 6 (ATF6). The roles of IRE-1, PERK, and ATF4 in viral and some bacterial infections are well characterized. The role of IERSR in infections by intracellular parasites is still poorly understood, although one could anticipate that IERSR may play an important role on the host's cell response. Recently, our group reported the important aspects of XBP-1 activation in Leishmania amazonensis infection. It is, however, necessary to address the relevance of the other IERSR branches, together with the possible role of IERSR in infections by other Leishmania species, and furthermore, to pursue the possible implications in the pathogenesis and control of parasite replication in macrophages.
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Affiliation(s)
- K L Dias-Teixeira
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro , Rio de Janeiro , Brazil
| | - R M Pereira
- Institute of Microbiology Paulo de Goes, Federal University of Rio de Janeiro , Rio de Janeiro , Brazil
| | - J S Silva
- Department of Biochemistry and Immunology, University of São Paulo , Ribeirão Preto , Brazil
| | - N Fasel
- Department of Biochemistry, Faculty of Biology and Medicine, Center for Immunity and Infection Lausanne, University of Lausanne , Lausanne , Switzerland
| | - B H Aktas
- Laboratory of Translation, Department of Hematology, Brigham and Women's Hospital, Harvard Medical School , Boston, MA , USA
| | - U G Lopes
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro , Rio de Janeiro , Brazil
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27
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Ball MJ, Silva JS. Reflections on the Yearbook from the 1990's to the Present. Yearb Med Inform 2016; Suppl 1:S10-1. [PMID: 27199192 DOI: 10.15265/iys-2016-s001] [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] [Indexed: 11/24/2022] Open
Abstract
The authors highlight IMIA's progress over the past twenty years as a key bridging organization that translates health informatics theory into practice. In contrast, they describe that electronic health record (EHR) systems built in the 20th Century are not meeting the needs of clinical users. Moreover, these EHRs are not architected to keep pace with the rapid changes in the evolving health ecosystem. They conclude that 21st Century health IT systems need to be architected into an ecosystem-wide suite of interacting complex adaptive systems that support individuals, clinicians, managers and policy-makers with the high value/high usability computing paradigm that dominates the Internet today.
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Affiliation(s)
- M J Ball
- Marion J. Ball Ed.D, Senior Advisor, Research Industry Specialist, Healthcare Informatics, IBM Research, Professor Emerita, Johns Hopkins University, 5706 Coley Court, Baltimore, Maryland 21210, USA, Tel: +1 410 433 7110, Fax: +1410 433 6314, Cell: +1443 802 5490, E-mail:
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28
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Ketelut-Carneiro N, Silva GK, Rocha FA, Milanezi CM, Cavalcanti-Neto FF, Zamboni DS, Silva JS. IL-18 triggered by the Nlrp3 inflammasome induces host innate resistance in a pulmonary model of fungal infection. J Immunol 2015; 194:4507-17. [PMID: 25825440 DOI: 10.4049/jimmunol.1402321] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Accepted: 02/25/2015] [Indexed: 12/23/2022]
Abstract
Pathogens are sensed by innate immune receptors that initiate an efficient adaptive immune response upon activation. The elements of the innate immune recognition process for Paracoccidioides brasiliensis include TLR-2, TLR-4, and dectin-1. However, there are additional receptors necessary for the host immune responses to P. brasiliensis. The nucleotide-binding oligomerization domain-like receptor (NLRs), which activate inflammasomes, are candidate receptors that deserve renewed investigation. After pathogen infection, the NLRs form large signaling platforms called inflammasomes, which lead to caspase-1 activation and maturation of proinflammatory cytokines (IL-18 and IL-1β). In this study, we showed that NLR family pyrin domain-containing 3 (Nlrp3) is required to induce caspase-1 activation and further secretion of IL-1β and IL-18 by P. brasiliensis-infected macrophages. Additionally, potassium efflux and lysosomal acidification induced by the fungus were important steps in the caspase-1 activation mechanism. Notably, Nlrp3 and caspase-1 knockout mice were more susceptible to infection than were the wild-type animals, suggesting that the Nlrp3-dependent inflammasomes contribute to host protection against P. brasiliensis. This protective effect occurred owing to the inflammatory response mediated by IL-18, as shown by an augmented fungus burden in IL-18 knockout mice. Taken together, our results show that the Nlrp3 inflammasome is essential for resistance against P. brasiliensis because it orchestrates robust caspase-1 activation and triggers an IL-18-dependent proinflammatory response.
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Affiliation(s)
- Natália Ketelut-Carneiro
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, 14049-900 Ribeirão Preto, São Paulo, Brazil
| | - Grace Kelly Silva
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, 14049-900 Ribeirão Preto, São Paulo, Brazil
| | - Fernanda Agostini Rocha
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, 14049-900 Ribeirão Preto, São Paulo, Brazil
| | - Cristiane Maria Milanezi
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, 14049-900 Ribeirão Preto, São Paulo, Brazil
| | | | - Dario Simões Zamboni
- Department of Cell Biology, Ribeirão Preto Medical School, University of São Paulo, 14049-900 Ribeirão Preto, São Paulo, Brazil
| | - João Santana Silva
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, 14049-900 Ribeirão Preto, São Paulo, Brazil;
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29
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Bonfá G, Benevides L, Souza MDC, Fonseca DM, Mineo TWP, Rossi MA, Silva NM, Silva JS, de Barros Cardoso CR. CCR5 controls immune and metabolic functions during Toxoplasma gondii infection. PLoS One 2014; 9:e104736. [PMID: 25119429 PMCID: PMC4132074 DOI: 10.1371/journal.pone.0104736] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Accepted: 07/16/2014] [Indexed: 11/18/2022] Open
Abstract
CCR5, an important receptor related to cell recruitment and inflammation, is expressed during experimental Toxoplasma gondii infection. However, its role in the immunopathology of toxoplasmosis is not clearly defined yet. Thus, we inoculated WT and CCR5-/- mice with a sub lethal dose of the parasite by oral route. CCR5-/- mice were extremely susceptible to infection, presenting higher parasite load and lower tissue expression of IL-12p40, IFN-γ, TNF, IL-6, iNOS, Foxp3, T-bet, GATA-3 and PPARα. Although both groups presented inflammation in the liver with prominent neutrophil infiltration, CCR5-/- mice had extensive tissue damage with hepatocyte vacuolization, steatosis, elevated serum triglycerides and transaminases. PPARα agonist Gemfibrozil improved the vacuolization but did not rescue CCR5-/- infected mice from high serum triglycerides levels and enhanced mortality. We also found intense inflammation in the ileum of CCR5-/- infected mice, with epithelial ulceration, augmented CD4 and decreased frequency of NK cells in the gut lamina propria. Most interestingly, these findings were accompanied by an outstanding accumulation of neutrophils in the ileum, which seemed to be involved in the gut immunopathology, once the depletion of these cells was accompanied by reduced local damage. Altogether, these data demonstrated that CCR5 is essential to the control of T. gondii infection and to maintain the metabolic, hepatic and intestinal integrity. These findings add novel information on the disease pathogenesis and may be relevant for directing future approaches to the treatment of multi-deregulated diseases.
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Affiliation(s)
- Giuliano Bonfá
- Departamento de Bioquímica e Imunologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Luciana Benevides
- Departamento de Bioquímica e Imunologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Maria do Carmo Souza
- Departamento de Bioquímica e Imunologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Denise Morais Fonseca
- Departamento de Bioquímica e Imunologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | | | - Marcos Antônio Rossi
- Departamento de Patologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Neide Maria Silva
- Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - João Santana Silva
- Departamento de Bioquímica e Imunologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Cristina Ribeiro de Barros Cardoso
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
- * E-mail:
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30
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Soares ECC, Vollmer WM, Cavalcante SC, Pacheco AG, Saraceni V, Silva JS, Neves GR, Golub JE, Efron AR, Durovni B, Chaisson RE. Tuberculosis control in a socially vulnerable area: a community intervention beyond DOT in a Brazilian favela. Int J Tuberc Lung Dis 2014; 17:1581-6. [PMID: 24200272 DOI: 10.5588/ijtld.13.0152] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVES To evaluate the population-based impact of a comprehensive intervention to strengthen tuberculosis (TB) control in Rocinha, the largest urban slum in Rio de Janeiro, Brazil. DESIGN In July 2003, 40 lay persons were hired and trained as community health workers to supervise treatment, implement educational activities and establish a supportive social network for anti-tuberculosis treatment. Between July 2005 and June 2008, a door-to-door active case finding campaign was conducted. Data were obtained from the Brazilian National Reporting System, which collects information from the TB notification form for every reported case. RESULTS Between January 2001 and December 2008, 2623 TB cases were reported, 852 before and 1771 after the start of the program. Following the intervention, treatment success rates increased (67.6% vs. 83.2%, P < 0.001) and default rates dropped (17.8% vs. 5.5%, P < 0.001). Compared to the pre-intervention period, the TB case rate declined by an average of 39 cases per 100,000 population per 6 months (P = 0.003) in the post-intervention period, although this may have been due to secular trends already in place at the start of the intervention. Case rates declined from 591/100,000 in 2001 to 496/100,000 in 2008. CONCLUSION With proper planning and effective community involvement, a successful intervention can lead to high cure rates and may contribute to a decrease in TB notification rates.
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Affiliation(s)
- E C C Soares
- City of Rio de Janeiro Health Secretariat, Rio de Janeiro, Rio de Janeiro, Brazil
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31
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Sanches TLM, Cunha LD, Silva GK, Guedes PMM, Silva JS, Zamboni DS. The use of a heterogeneously controlled mouse population reveals a significant correlation of acute phase parasitemia with mortality in Chagas disease. PLoS One 2014; 9:e91640. [PMID: 24651711 PMCID: PMC3961278 DOI: 10.1371/journal.pone.0091640] [Citation(s) in RCA: 6] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Accepted: 02/13/2014] [Indexed: 11/18/2022] Open
Abstract
Chagas disease develops upon infection with the protozoan parasite Trypanosoma cruzi and undergoes an acute phase characterized by massive parasite replication and the presence of parasites in the blood. This condition is known as acute phase parasitemia. This initial stage may result in a cure, in the development of the chronic stages of the disease or in the death of the infected host. Despite intensive investigation related to the characterization of the acute and chronic phases of the disease, the cause-effect relationship of acute phase parasitemia to the outcome of the disease is still poorly understood. In this study, we artificially generated a heterogeneously controlled mouse population by intercrossing F1 mice obtained from a parental breeding of highly susceptible A/J with highly resistant C57BL/6 mouse strains. This F2 population was infected and used to assess the correlation of acute phase parasitemia with the longevity of the animals. We used nonparametric statistical analyses and found a significant association between parasitemia and mortality. If males and females were evaluated separately, we found that the former were more susceptible to death, although parasitemia was similar in males and females. In females, we found a strong negative correlation between parasitemia and longevity. In males, however, additional factors independent of parasitemia may favor mouse mortality during the development of the disease. The correlations of acute phase parasitemia with mortality reported in this study may facilitate an appropriate prognostic approach to the disease in humans. Moreover, these results illustrate the complexity of the mammalian genetic traits that regulate host resistance during Chagas disease.
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Affiliation(s)
- Tiago L. M. Sanches
- Department of Cell Biology, University of São Paulo, Medical School Ribeirão Preto, FMRP/USP, São Paulo, Brazil
| | - Larissa D. Cunha
- Department of Cell Biology, University of São Paulo, Medical School Ribeirão Preto, FMRP/USP, São Paulo, Brazil
| | - Grace K. Silva
- Department of Biochemistry and Immunology, University of São Paulo, Medical School Ribeirão Preto, FMRP/USP, São Paulo, Brazil
| | - Paulo M. M. Guedes
- Department of Biochemistry and Immunology, University of São Paulo, Medical School Ribeirão Preto, FMRP/USP, São Paulo, Brazil
| | - João Santana Silva
- Department of Biochemistry and Immunology, University of São Paulo, Medical School Ribeirão Preto, FMRP/USP, São Paulo, Brazil
| | - Dario S. Zamboni
- Department of Cell Biology, University of São Paulo, Medical School Ribeirão Preto, FMRP/USP, São Paulo, Brazil
- * E-mail:
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32
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Ponce CH, Brown MS, Silva JS, Schlegel P, Rounds W, Hallford DM. Effects of a dietary sweetener on growth performance and health of stressed beef calves and on diet digestibility and plasma and urinary metabolite concentrations of healthy calves. J Anim Sci 2014; 92:1630-8. [PMID: 24663208 DOI: 10.2527/jas.2013-6795] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Two experiments were conducted to explore the effects of a sodium saccharin-based dietary sweetener (Sucram) on growth performance, health, and physiological responses of feedlot steers. In Exp. 1, 173 newly-received male calves purchased from auction barns were fed 0, 100, 200, or 300 g of Sucram/t of DM over 56 d. Overall, ADG and G:F (P > 0.10) were not different among treatments, but steers receiving 200 g Sucram/t displayed numerically greater ADG (23%). In addition, DMI was 17% greater for steers receiving 200 g of Sucram/t compared to steers fed the control diet (cubic effect, P = 0.09). The morbidity rate for respiratory disease did not differ (P > 0.50) among treatments. In Exp. 2, 15 steers (initial BW = 261 ± 28 kg) were used to evaluate the effects of Sucram on apparent total tract digestibility, plasma metabolite concentrations, and urine monoamine metabolite concentrations. Treatments consisted of ad libitum access to a 60% concentrate diet (Control), ad libitum access to Control + 200 g of Sucram/t of DM (Adlib), and Control + 200 g of Sucram/t of DM with feed intake paired to the Control (Paired). By design, steer DMI during the metabolism period did not differ (P = 0.34) between Paired and Control, but DMI tended (P = 0.14) to be 8.2% greater for Adlib than for Control. Treatments did not alter (P > 0.17) apparent total tract nutrient digestibility. Postprandial plasma citrulline concentration was lower (P = 0.03) for Adlib than for Control and tended to be lower (P = 0.13) for Paired than for Control. Plasma homocysteine concentration was reduced (P < 0.03) by feeding Sucram. Urinary concentrations of ethylmalonic acid, vanillymandelic acid, and 5-hydroxyindolacetic acid were greater (P < 0.06) for Adlib than for Control; Paired steers had a greater (P = 0.02) urine vanillymandelic acid concentration than Control steers and tended (P < 0.12) to have a greater urinary concentration of ethylmalonic and 5-hydroxyindolacetic acid than Control steers. Serum insulin was greater for Adlib than for Control steers (P = 0.04) and tended to be greater for Paired than for Control steers (P = 0.14), but serum prolactin area did not differ (P > 0.22) among treatments. Supplementation with Sucram may increase feed intake by newly-received, stressed feedlot calves. Saccharin supplementation reduced plasma homocysteine and increased urinary excretion of vanillymandelic acid, suggesting an improved activity of the dopamine reward system.
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Affiliation(s)
- C H Ponce
- Feedlot Research Group, West Texas A&M University, Canyon
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33
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Tristão FSM, Rocha FA, Dias FC, Rossi MA, Silva JS. The left lung is preferentially targeted during experimental paracoccidioidomycosis in C57BL/6 mice. Braz J Med Biol Res 2013; 46:839-43. [PMID: 24141611 PMCID: PMC3854305 DOI: 10.1590/1414-431x20133140] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Accepted: 07/29/2013] [Indexed: 11/21/2022] Open
Abstract
Paracoccidioidomycosis (PCM) is a chronic systemic mycosis caused by the
inhalation of the thermally dimorphic fungus Paracoccidioides
brasiliensis as well as the recently described P.
lutzii. Because the primary infection occurs in the lungs, we
investigated the differential involvement of the right and left lungs in
experimental P. brasiliensis infection. Lungs were collected
from C57BL/6 mice at 70 days after intravenous infection with 1×106
yeast cells of a virulent strain of P. brasiliensis (Pb18). The
left lung, which in mice is smaller and has fewer lobes than the right lung,
yielded increased fungal recovery associated with a predominant interleukin-4
response and diminished synthesis of interferon-γ and nitric oxide compared with
the right lung. Our data indicate differential involvement of the right and left
lungs during experimental PCM. This knowledge emphasizes the need for an
accurate, standardized protocol for tissue collection during studies of
experimental P. brasiliensis infection, since experiments using
the same lungs favor the collection of comparable data among different mice.
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Affiliation(s)
- F S M Tristão
- Departamento de Bioquímica e Imunologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão PretoSP, Brasil
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Rodrigues RM, Cardoso CR, Gonçalves ALR, Silva NM, Massa V, Alves R, Ueta MT, Silva JS, Costa-Cruz JM. Increased susceptibility to Strongyloides venezuelensis infection is related to the parasite load and absence of major histocompatibility complex (MHC) class II molecules. Exp Parasitol 2013; 135:580-6. [PMID: 24036323 DOI: 10.1016/j.exppara.2013.09.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [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: 01/25/2013] [Revised: 08/20/2013] [Accepted: 09/03/2013] [Indexed: 10/26/2022]
Abstract
In human and murine models strongyloidiasis induce a Th2 type response. In the current study we investigated the role of different loads of Strongyloides venezuelensis in the immune response raised against the parasite and the participation of the major histocompatibility complex (MHC) class II molecule in the disease outcome in face of the different parasite burden. The C57BL/6 wild type (WT) and MHC II(-/-) mice were individually inoculated by subcutaneous injection with 500 or 3000 S. venezuelensis L3. The MHC II(-/-) mice infected with 3000L3 were more susceptible to S. venezuelensis infection when compared with WT groups, in which the parasite was completely eliminated. The production of Th2 cytokines and specific IgG1 or IgE antibodies against parasite were significantly lowered in MHC II(-/-) infected mice with different larvae inoculums. The infection of MHC II(-/-) mice with S. venezuelensis induced slight inflammatory alterations in the small intestine, and these lesions were lower when compared with WT mice, irrespective of the parasite load utilized to infect animals. Finally, we concluded that MHC class II molecules are essential in the immune response against S. venezuelensis mainly when infection occurs with high parasite inoculum.
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Affiliation(s)
- Rosângela Maria Rodrigues
- Laboratório de Diagnóstico de Parasitoses, Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Av. Pará 1720, 38400-902 Uberlândia, MG, Brazil; Laboratório de Parasitologia, Universidade Federal de Goiás, Campus Jataí, GO, Brazil
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Belai EB, de Oliveira CE, Gasparoto TH, Ramos RN, Torres SA, Garlet GP, Cavassani KA, Silva JS, Campanelli AP. PD-1 blockage delays murine squamous cell carcinoma development. Carcinogenesis 2013; 35:424-31. [PMID: 24031027 DOI: 10.1093/carcin/bgt305] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Engagement of programmed death-1 (PD-1) with its two ligands [programmed death ligand-1 (PD-L1) and PD-L2] has been associated with the suppression of tumor-reactive T cells; however, the underlying mechanism for this T-cell dysfunction is not clear. We hypothesized that PD-1 and PD-L1 signals are, in part, responsible for squamous cell carcinoma (SCC) escape from immune antitumor regulation by modulation of the tumor environment. In the present study, we used a multistage model of SCC to examine the role of PD-1/PD-L1 activation during tumor development. Tumor sites presented an increased percentage of CD4(+) and CD8(+) T cells expressing PD-1 when compared with non-tumorigenic control mice, whereas the expression of PD-L1 was particularly increased in F4/80(+) macrophages in tumor sites. Further, the systemic immune neutralization of PD-1 resulted in a decreased number and delayed incidence rate of papillomas followed by a differential expression of cytokeratins, suggesting that the PD-1-PD-L1 interaction contributes to the progression of SCC by downregulation of antitumor responses. In fact, blocking PD-1 increased the percentage of CD8(+) and CD4(+) T cells, and the levels of interferon-γ in the tumor sites. Our results indicated involvement of PD-1(+) T cells in SCC development and in the modulation of the inflammatory immune response.
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Silva GK, Costa RS, Silveira TN, Caetano BC, Horta CV, Gutierrez FRS, Guedes PMDM, Andrade WA, De Niz M, Gazzinelli RT, Zamboni DS, Silva JS. Apoptosis-associated speck-like protein containing a caspase recruitment domain inflammasomes mediate IL-1β response and host resistance to Trypanosoma cruzi infection. J Immunol 2013; 191:3373-83. [PMID: 23966627 DOI: 10.4049/jimmunol.1203293] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The innate immune response to Trypanosoma cruzi infection comprises several pattern recognition receptors (PRRs), including TLR-2, -4, -7, and -9, as well as the cytosolic receptor Nod1. However, there are additional PRRs that account for the host immune responses to T. cruzi. In this context, the nucleotide-binding oligomerization domain-like receptors (NLRs) that activate the inflammasomes are candidate receptors that deserve renewed investigation. Following pathogen infection, NLRs form large molecular platforms, termed inflammasomes, which activate caspase-1 and induce the production of active IL-1β and IL-18. In this study, we evaluated the involvement of inflammasomes in T. cruzi infection and demonstrated that apoptosis-associated speck-like protein containing a caspase recruitment domain (ASC) inflammasomes, including NLR family, pyrin domain-containing 3 (NLRP3), but not NLR family, caspase recruitment domain-containing 4 or NLR family, pyrin domain-containing 6, are required for triggering the activation of caspase-1 and the secretion of IL-1β. The mechanism by which T. cruzi mediates the activation of the ASC/NLRP3 pathway involves K⁺ efflux, lysosomal acidification, reactive oxygen species generation, and lysosomal damage. We also demonstrate that despite normal IFN-γ production in the heart, ASC⁻/⁻ and caspase-1⁻/⁻ infected mice exhibit a higher incidence of mortality, cardiac parasitism, and heart inflammation. These data suggest that ASC inflammasomes are critical determinants of host resistance to infection with T. cruzi.
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Affiliation(s)
- Grace Kelly Silva
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, 14049-900 Ribeirão Preto, São Paulo, Brazil
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Tureck LV, Santos LC, Wowk PF, Mattar SB, Silva JS, Magalhães JCM, Roxo VMMS, Bicalho MG. HLA-G 5' URR SNPs and 3' UTR 14-bp insertion/deletion polymorphism in an Afro-Brazilian population from Paraná State. Int J Immunogenet 2013; 41:29-33. [PMID: 23829564 DOI: 10.1111/iji.12068] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Revised: 04/04/2013] [Accepted: 05/15/2013] [Indexed: 11/28/2022]
Abstract
The present study investigated 23 SNPs in the 5'URR promoter region and the 14 bp ins/del polymorphism at the 3'UTR region of the HLA-G gene in 150 individuals with Afro-Brazilian ancestry. Three haplotypes were found to be the most frequent. Comparing these polymorphisms in other samples, our data suggest that Afro-Brazilians are more similar to the Euro-Brazilians than to Hutterite population.
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Affiliation(s)
- L V Tureck
- Department of Genetics, Laboratory of Immunogenetics and Histocompatibility, Universidade Federal do Paraná, Curitiba, Brazil
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Carregaro V, Costa DL, Brodskyn C, Barral AM, Barral-Netto M, Cunha FQ, Silva JS. Dual effect of Lutzomyia longipalpis saliva on Leishmania braziliensis infection is mediated by distinct saliva-induced cellular recruitment into BALB/c mice ear. BMC Microbiol 2013; 13:102. [PMID: 23656976 PMCID: PMC3655920 DOI: 10.1186/1471-2180-13-102] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Accepted: 05/04/2013] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Leishmania parasites are transmitted to their vertebrate hosts by infected Phlebotomine sand flies during the blood meal of the flies. Sand fly saliva is known to enhance Leishmania spp. infection, while pre-exposure to saliva protects mice against parasitic infections. In this study, we investigated the initial inflammatory leucocyte composition induced by one or three inocula of salivary gland extract (SGE) from Lutzomyia longipalpis in the presence or absence of Leishmania braziliensis. RESULTS We demonstrated that inoculating SGE once (SGE-1X) or three times (SGE-3X), which represented a co-inoculation or a pre-exposure to saliva, respectively, resulted in different cellular infiltrate profiles. Whereas SGE-1X led to the recruitment of all leucocytes subtypes including CD4(+) T cells, CD4(+)CD25(+) T cells, dendritic cells, macrophages and neutrophils, the immune cell profile in the SGE-3X group differed dramatically, as CD4(+) T cells, CD4(+)CD25(+) T cells, dendritic cells, macrophages and neutrophils were decreased and CD8(+) T cells were increased. The SGE-1X group did not show differences in the ear lesion size; however, the SGE-1X group harbored a higher number of parasites. On the other hand, the SGE-3X group demonstrated a protective effect against parasitic disease, as the parasite burden was lower even in the earlier stages of the infection, a period in which the SGE-1X group presented with larger and more severe lesions. These effects were also reflected in the cytokine profiles of both groups. Whereas the SGE-1X group presented with a substantial increase in IL-10 production, the SGE-3X group showed an increase in IFN-γ production in the draining lymph nodes. Analysis of the inflammatory cell populations present within the ear lesions, the SGE-1X group showed an increase in CD4(+)FOXP3(+) cells, whereas the CD4(+)FOXP3(+) population was reduced in the SGE-3X group. Moreover, CD4(+) T cells and CD8(+) T cells producing IFN-γ were highly detected in the ears of the SGE-3X mice prior to infection. In addition, upon treatment of SGE-3X mice with anti-IFN-γ monoclonal antibody, we observed a decrease in the protective effect of SGE-3X against L. braziliensis infection. CONCLUSIONS These results indicate that different inocula of Lutzomyia longipalpis salivary gland extract can markedly modify the cellular immune response, which is reflected in the pattern of susceptibility or resistance to Leishmania braziliensis infection.
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Affiliation(s)
- Vanessa Carregaro
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, Av Bandeirantes, 3900, Ribeirão Preto, São Paulo, Brazil
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Faustino L, da Fonseca DM, Takenaka MC, Mirotti L, Florsheim EB, Guereschi MG, Silva JS, Basso AS, Russo M. Regulatory T cells migrate to airways via CCR4 and attenuate the severity of airway allergic inflammation. J Immunol 2013; 190:2614-21. [PMID: 23390295 DOI: 10.4049/jimmunol.1202354] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
We have previously shown that regulatory T (Treg) cells that accumulate in the airways of allergic mice upregulate CC-chemokine receptor 4 (CCR4) expression. These Treg cells suppressed in vitro Th2 cell proliferation but not type 2 cytokine production. In the current study, using a well-established murine model of allergic lung disease or oral tolerance, we evaluated the in vivo activity of Treg cells in allergic airway inflammation with special focus on CCR4 function. We found that allergic, but not tolerant, mice treated with anti-CD25 Ab showed increased airway eosinophilia and IL-5- or IL-4-producing Th2 cells when compared with untreated mice. Notably, mice with CCR4 deficiency displayed an augmented airway allergic inflammation compared with wild-type or CCR2 knockout (KO) mice. The allergic phenotype of CCR4KO mice was similar to that observed in anti-CD25-treated mice. The exacerbated allergic inflammation of CCR4KO mice was directly associated with an impaired migration of Treg cells to airways and augmented frequency of pulmonary Th2 cells. Adoptive transfer of CD25(+)CD4(+) T cells expressing high levels of CCR4, but not CCR4KO CD25(+)CD4(+) T cells, attenuated the severe airway Th2 response of CCR4KO mice. Our results show that CCR4 is critically involved in the migration of Treg cells to allergic lungs that, in turn, attenuate airway Th2 activation and allergic eosinophilic inflammation.
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Affiliation(s)
- Lucas Faustino
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, Sao Paulo, SP 05508-900, Brazil
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Dellalibera-Joviliano R, Joviliano EE, Silva JS, Evora PRB. Activation of cytokines corroborate with development of inflammation and autoimmunity in thromboangiitis obliterans patients. Clin Exp Immunol 2012; 170:28-35. [PMID: 22943198 DOI: 10.1111/j.1365-2249.2012.04624.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Thromboangiitis obliterans (TAO) is a segmental inflammatory occlusive disorder that affects the arm and leg arteries of young smokers. The immune system seems to play a critical role in the aetiology of TAO; however, knowledge of the aspects involved in the progression of vascular tissue inflammation and, consequently, the evolution of this disease is still limited. This study was carried out to investigate the cytokine levels of tumour necrosis factor (TNF)-α, interleukin (IL)-1β, IL-4, IL-17 and IL-23 in the plasma of TAO patients presenting with acute clinical manifestations. The study included 20 TAO patients (n = 10 women; n = 10 men) aged 38-59 years under clinical follow-up, classified into two groups: (i) TAO former smokers (n = 11) and (ii) TAO active smokers (n = 9); the control groups included normal volunteer non-smokers (n = 10, active smokers (n = 10) and former smokers (n = 10). Patients' plasma samples were measured using the sandwich enzyme-linked immunosorbent assay. Statistical analyses were performed using the non-parametric Mann-Whitney U-test, with parameters significant at P < 0·05. The activities of all cytokines were different in groups of TAO patients when compared with normal controls, and decreased for control smokers. Increased levels of TNF-α, IL-1β, IL-4, IL-17 and IL-23 were significant in patients with TAO when compared to the controls (P < 0·005, all parameters). The results presented here indicate an increased production of cytokines in TAO, possibly contributing to the inflammatory response observed in the patients' vascular levels. In addition, the increased levels of IL-17 and IL-23 suggest that the disturbance of TAO is involved with mechanisms of autoimmunity. Thus, the discovery of IL-17 and its association with inflammation and autoimmune pathology has reshaped our viewpoint regarding the pathogenesis of TAO, which was based previously on the T helper type 1 (Th1)-Th2 paradigm.
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Repeke CE, Cardoso CR, Claudino M, Silveira EM, Trombone APF, Campanelli AP, Silva JS, Martins W, Garlet GP. Non-inflammatory destructive periodontal disease: a clinical, microbiological, immunological and genetic investigation. J Appl Oral Sci 2012; 20:113-21. [PMID: 22437688 PMCID: PMC3928782 DOI: 10.1590/s1678-77572012000100020] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2009] [Accepted: 04/12/2010] [Indexed: 12/20/2022] Open
Abstract
Periodontitis comprises a group of multifactorial diseases in which periodontopathogens accumulate in dental plaque and trigger host chronic inflammatory and immune responses against periodontal structures, which are determinant to the disease outcome. Although unusual cases of non-inflammatory destructive periodontal disease (NIDPD) are described, their pathogenesis remains unknown. A unique NIDPD case was investigated by clinical, microbiological, immunological and genetic tools. The patient, a non-smoking dental surgeon with excessive oral hygiene practice, presented a generalized bone resorption and tooth mobility, but not gingival inflammation or occlusion problems. No hematological, immunological or endocrine alterations were found. No periodontopathogens (A. actinomycetemcomitans, P. gingivalis, F. nucleatum and T. denticola) or viruses (HCMV, EBV-1 and HSV-1) were detected, along with levels of IL-1β and TNF-a in GCF compatible with healthy tissues. Conversely ALP, ACP and RANKL GCF levels were similar to diseased periodontal sites. Genetic investigation demonstrated that the patient carried some SNPs, as well HLA-DR4 (*0404) and HLA-B27 alleles, considered risk factors for bone loss. Then, a less vigorous and diminished frequency of toothbrushing was recommended to the patient, resulting in the arrest of alveolar bone loss, associated with the return of ALP, ACP and RANKL in GCF to normality levels. In conclusion, the unusual case presented here is compatible with the previous description of NIDPD, and the results that a possible combination of excessive force and frequency of mechanical stimulation with a potentially bone loss prone genotype could result in the alveolar bone loss seen in NIDPD.
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Affiliation(s)
- Carlos Eduardo Repeke
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, SP, Brazil
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Matta Guedes PM, Gutierrez FRS, Nascimento MSL, Do-Valle-Matta MA, Silva JS. Antiparasitical chemotherapy in Chagas' disease cardiomyopathy: current evidence. Trop Med Int Health 2012; 17:1057-65. [PMID: 22686518 DOI: 10.1111/j.1365-3156.2012.03025.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [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: 11/26/2022]
Abstract
Chronic chagasic cardiomyopathy affects 20% of Chagas' disease patients. At present, Chagas' disease chemotherapy uses nitrofurans, benznidazole (Rochagan®, Rodanil®, Roche) or nifurtimox (Lampit®, Bayer). Treatment during acute and recent chronic phases in childhood effects 71.5% and 57.6%, respectively, of parasitological cure. However, in clinical trials during the late chronic phase, only 5.9% of parasitological cure were achieved. This review focuses on the benefit from aetiological treatment to avoid, stop or revert myocarditis. Divergent data gathered from clinical practice are not convincing to support prescription of aetiological treatment as routine for indeterminate and cardiac chronic patients.
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Affiliation(s)
- Paulo Marcos Matta Guedes
- Department of Microbiology and Parasitology, Bioscience Center, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil.
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Guedes PMM, Gutierrez FRS, Silva GK, Dellalibera-Joviliano R, Rodrigues GJ, Bendhack LM, Rassi A, Rassi A, Schmidt A, Maciel BC, Marin Neto JA, Silva JS. Deficient regulatory T cell activity and low frequency of IL-17-producing T cells correlate with the extent of cardiomyopathy in human Chagas' disease. PLoS Negl Trop Dis 2012; 6:e1630. [PMID: 22545173 PMCID: PMC3335880 DOI: 10.1371/journal.pntd.0001630] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [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: 10/05/2011] [Accepted: 03/09/2012] [Indexed: 11/23/2022] Open
Abstract
Background Myocardium damage during Chagas' disease results from the immunological imbalance between pro- and production of anti-inflammatory cytokines and has been explained based on the Th1–Th2 dichotomy and regulatory T cell activity. Recently, we demonstrated that IL-17 produced during experimental T. cruzi infection regulates Th1 cells differentiation and parasite induced myocarditis. Here, we investigated the role of IL-17 and regulatory T cell during human Chagas' disease. Methodology/Principal Findings First, we observed CD4+IL-17+ T cells in culture of peripheral blood mononuclear cells (PBMC) from Chagas' disease patients and we evaluated Th1, Th2, Th17 cytokine profile production in the PBMC cells from Chagas' disease patients (cardiomyopathy-free, and with mild, moderate or severe cardiomyopathy) cultured with T. cruzi antigen. Cultures of PBMC from patients with moderate and severe cardiomyopathy produced high levels of TNF-α, IFN-γ and low levels of IL-10, when compared to mild cardiomyopathy or cardiomyopathy-free patients. Flow cytometry analysis showed higher CD4+IL-17+ cells in PBMC cultured from patients without or with mild cardiomyopathy, in comparison to patients with moderate or severe cardiomyopathy. We then analyzed the presence and function of regulatory T cells in all patients. All groups of Chagas' disease patients presented the same frequency of CD4+CD25+ regulatory T cells. However, CD4+CD25+ T cells from patients with mild cardiomyopathy or cardiomyopathy-free showed higher suppressive activity than those with moderate and severe cardiomyopathy. IFN-γ levels during chronic Chagas' disease are inversely correlated to the LVEF (P = 0.007, r = −0.614), while regulatory T cell activity is directly correlated with LVEF (P = 0.022, r = 0.500). Conclusion/Significance These results indicate that reduced production of the cytokines IL-10 and IL-17 in association with high levels of IFN-γ and TNF-α is correlated with the severity of the Chagas' disease cardiomyopathy, and the immunological imbalance observed may be causally related with deficient suppressor activity of regulatory T cells that controls myocardial inflammation. Dilated cardiomyopathy is one of the clinical forms of Chagas' disease (CD) after the infection caused by the parasite Trypanosoma cruzi. Even though strategies adopted in most Latin-American countries in the last decades towards vector control have been effective in reducing the incidence of CD, active transmission is maintained in some regions, and secondary prevention approaches are still required for the infected patients, mostly because the specific anti-parasitic medications are toxic and perhaps of limited efficacy in chronically infected individuals. Moreover, there are no markers to predict the risk of developing dilated cardiomyopathy in asymptomatic, chronically infected patients, although the failure in the mechanisms that control the immune response can be involved in the development of Chagas' heart disease. In this study we show that preserved activity of regulatory T cells and the production of the cytokine IL-17 are connected with a more benign evolution of the disease, which brings a new understanding on the mechanisms associated with progression of CD.
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Affiliation(s)
- Paulo Marcos Matta Guedes
- Department of Microbiology and Parasitology, Federal University of Rio Grande do Norte, Natal, Brazil
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Fredy Roberto Salazar Gutierrez
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
- School of Medicine, University Antonio Narino, Bogota, Colombia
| | - Grace Kelly Silva
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Renata Dellalibera-Joviliano
- Integrated Faculty Fafibe and Department of Surgery and Anatomy, School of Medicine of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Gerson Jhonatan Rodrigues
- Department of Pharmacology, School of Medicine of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Lusiane Maria Bendhack
- Department of Physical and Chemistry, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Anis Rassi
- Division of Cardiology, Anis Rassi Hospital, Goiânia, Brazil
| | - Anis Rassi
- Division of Cardiology, Anis Rassi Hospital, Goiânia, Brazil
| | - André Schmidt
- Division of Cardiology, School of Medicine of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Benedito Carlos Maciel
- Division of Cardiology, School of Medicine of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - José Antonio Marin Neto
- Division of Cardiology, School of Medicine of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - João Santana Silva
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
- * E-mail:
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Malvestio LMM, Prado C, Campos É, Celes MR, Ferezin P, Silva JS, Rossi MA. Proinflamatory cytokines affect dystrophin expression in cultured newborn cardiomyocytes under different stimuli. FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.1036.2] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Cibele Prado
- PathologyUniversity of São PauloRibeirão PretoBrazil
| | - Érica Campos
- PathologyUniversity of São PauloRibeirão PretoBrazil
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Abstract
BACKGROUND In health care services, the workers from laundry and linen services are exposed to various occupational hazards, including the ergonomic risk. Were decided to study the effect of ergonomic factors at work in the musculoskeletal system for employees in this sector. METHODS Cross-sectional study conducted in a mid-sized general hospital in Brazil. Site visit was conducted to apply recognition of occupational hazards and work activities flow. Medical evaluation of twenty-one workers was performed for designing the health status of them, focusing on orthopedic disorders. RESULTS Their activities are to distribute clothes in all units of hospital care in order to organize and maintain supplies. The principal complaints were back pain (43%) and shoulder pain (24%). The ergonomic risk happens due to repeated movements of lumbar flexion in sealing, raising the arms above shoulder level in storage and transportation of loads on the distribution of clean clothes. CONCLUSIONS The complaints by workers are consistent with the overloads identified in the evaluation of jobs. It is recommended to adjust anthropometrically the sealing workplace; the availability of stairs; the implantation of trolleys with four swivel wheels; short breaks during the workday; and to stretch the muscles before and during work.
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Affiliation(s)
- D A Sacouche
- Deparment of Social Medicine, Santa Casa Medical Sciences School, São Paulo, SP, Brasil
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Valejo FAM, Andrade JM, Sicchieri RD, Antonio HMR, Marana HRC, Mouro LR, Oliveira TMG, Benevides L, Silva JS, Muglia VF, Tiezzi DG. P2-01-18: Cancer Stem-Like Cells in Breast Cancer Progression. Cancer Res 2011. [DOI: 10.1158/0008-5472.sabcs11-p2-01-18] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: increasing evidences support the presence of cancer stem-like cells (CSLCs) within breast carcinomas. A subset of cells enriched for CSLCs within the tumor can be identified by flow cytometry. It has been supposed that CSLC component is responsible for tumor resistance and metastasis. However, the analysis of such population has never been evaluated during breast cancer progression. Patients and Methods: We prospectively included 98 women with histologically proven breast carcinomas to assess the presence of CSLCs within the primary tumor. According to clinical stage (CS), five patients were CS 0 (palpable DCIS), 16 CS I, 20 CS II and negative lymph nodes (IIA-), 20 CS II and positive lymph nodes (IIA+), 6 IIIa, 17 IIIb, 1IIIc and 2 CS IV. Additionally, ten lymph node metastases from IIA+ patients were analyzed. Invasive ductal carcinoma (IDC) was observed in 79 patients. We excluded from the analysis patients with non ductal histology (n= 11). The percentage of CD44+/CD24- (n= 79), ALDH1+ (ALDEFLUOR®) (n= 29), ABCG2+ (n= 44) and CXCR4+ (n= 46) cells within ESA+ cells was determined by flow cytometry in fresh sampled tumors. The mammosphere assay was studied in 14 samples. The relationship between cytometry analyses and clinical and pathological features was analyzed.
Results: The median prevalence of CD44+/CD24- cells within ESA+ population was 1.63% in stage 0, 2.39% in stage I, 0.42% in stage IIA-, 8.15% in stage IIA+, 0.52% in stage III (p=0.005). The CD44+/CD24- cell population was analyzed in 10 lymph node metastasis and, the median prevalence of this population within ESA+ cells was 4.7%. There was no variation of median prevalence of ALDH1+, CXCR4+, ABCG2+ and the median number of spheres among clinical stages (p=0.1, p=0.8, p=0.8, p=0.8, respectively). We didn't observe any association among the expression of, ABCG2+, CXCR4+ with histological grade and the expression of ER and PgR. The median percentage of CD44+/CD24- cells was higher (2.39% vs 0.41%) in ER positive tumors (p=0.003). The median percentage of ESA+/ CXCR4+ cells was higher (42,5% vs 9,7%) in HER2− tumors. There was no correlation between the studied markers and the patients’ age and clinical tumor diameter. The results are summarized in Table 1.
Results of association between expression cells surface markers and ALDH1 activity (Aldefluor®) with clinical and pathological features in invasive ductal carcinomas.
Discussion: We found a significant variation in CSLC population during breast cancer progression. Our data show a gradual increase in CD44+/CD24- cells within ESA+ population from stage 0 to stage IIA+ and a significant decrease in stage III tumors. This observation supports the hypothesis that a population of CSLCs could be associated with breast cancer progression.
Citation Information: Cancer Res 2011;71(24 Suppl):Abstract nr P2-01-18.
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Affiliation(s)
- FAM Valejo
- 1Faculdade de Medicina de Ribeirão Preto — University of São Paulo, Ribeirão preto, SP, Brazil; Faculdade de Medicina de Ribeirão Preto — University of São Paulo, Ribeirao Preto, SP, Brazil
| | - JM Andrade
- 1Faculdade de Medicina de Ribeirão Preto — University of São Paulo, Ribeirão preto, SP, Brazil; Faculdade de Medicina de Ribeirão Preto — University of São Paulo, Ribeirao Preto, SP, Brazil
| | - RD Sicchieri
- 1Faculdade de Medicina de Ribeirão Preto — University of São Paulo, Ribeirão preto, SP, Brazil; Faculdade de Medicina de Ribeirão Preto — University of São Paulo, Ribeirao Preto, SP, Brazil
| | - HMR Antonio
- 1Faculdade de Medicina de Ribeirão Preto — University of São Paulo, Ribeirão preto, SP, Brazil; Faculdade de Medicina de Ribeirão Preto — University of São Paulo, Ribeirao Preto, SP, Brazil
| | - HRC Marana
- 1Faculdade de Medicina de Ribeirão Preto — University of São Paulo, Ribeirão preto, SP, Brazil; Faculdade de Medicina de Ribeirão Preto — University of São Paulo, Ribeirao Preto, SP, Brazil
| | - LR Mouro
- 1Faculdade de Medicina de Ribeirão Preto — University of São Paulo, Ribeirão preto, SP, Brazil; Faculdade de Medicina de Ribeirão Preto — University of São Paulo, Ribeirao Preto, SP, Brazil
| | - TMG Oliveira
- 1Faculdade de Medicina de Ribeirão Preto — University of São Paulo, Ribeirão preto, SP, Brazil; Faculdade de Medicina de Ribeirão Preto — University of São Paulo, Ribeirao Preto, SP, Brazil
| | - L Benevides
- 1Faculdade de Medicina de Ribeirão Preto — University of São Paulo, Ribeirão preto, SP, Brazil; Faculdade de Medicina de Ribeirão Preto — University of São Paulo, Ribeirao Preto, SP, Brazil
| | - JS Silva
- 1Faculdade de Medicina de Ribeirão Preto — University of São Paulo, Ribeirão preto, SP, Brazil; Faculdade de Medicina de Ribeirão Preto — University of São Paulo, Ribeirao Preto, SP, Brazil
| | - VF Muglia
- 1Faculdade de Medicina de Ribeirão Preto — University of São Paulo, Ribeirão preto, SP, Brazil; Faculdade de Medicina de Ribeirão Preto — University of São Paulo, Ribeirao Preto, SP, Brazil
| | - DG Tiezzi
- 1Faculdade de Medicina de Ribeirão Preto — University of São Paulo, Ribeirão preto, SP, Brazil; Faculdade de Medicina de Ribeirão Preto — University of São Paulo, Ribeirao Preto, SP, Brazil
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Pérez AR, Silva-Barbosa SD, Roggero E, Calmon-Hamaty F, Villar SR, Gutierrez FR, Silva JS, Savino W, Bottasso O. Immunoendocrinology of the thymus in Chagas disease. Neuroimmunomodulation 2011; 18:328-38. [PMID: 21952685 DOI: 10.1159/000329494] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
During immune response to infectious agents, the host develops an inflammatory response which could fail to eliminate the pathogen or may become dysregulated. In this case, the ongoing response acquires a new status and turns out to be detrimental. The same elements taking part in the establishment and regulation of the inflammatory response (cytokines, chemokines, regulatory T cells and counteracting compounds like glucocorticoids) may also mediate harmful effects. Thymic disturbances seen during Trypanosoma cruzi (T. cruzi) infection fit well with this conceptual framework. After infection, this organ suffers a severe atrophy due to apoptosis-induced thymocyte exhaustion, mainly affecting the immature double-positive (DP) CD4+CD8+ population. Thymus cellularity depletion, which occurs in the absence of main immunological mediators involved in anti-T. cruzi defense, seems to be linked to a systemic cytokine/hormonal imbalance, involving a dysregulated increase in Tumor Necrosis Factor alpha (TNF-α) and corticosterone hormone levels. Additionally, we have found an anomalous exit of potentially autoimmune DP cells to the periphery, in parallel to a shrinkage in the compartment of natural regulatory T cells. In this context, our data clearly point to the view that the thymus is a target organ of T. cruzi infection. Preserved thymus may be essential for the development of an effective immune response against T. cruzi, but this organ is severely affected by a dysregulated circuit of proinflammatory cytokines and glucocorticoids. Also, the alterations observed in the DP population might have potential implications for the autoimmune component of human Chagas disease.
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Affiliation(s)
- Ana Rosa Pérez
- Institute of Immunology, School of Medical Sciences, National University of Rosario (U.N.R.), Rosario, Argentina. perez_anarosa @ yahoo.com.ar
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da Fonseca DM, Trombone APF, Repeke CE, Avila-Campos MJ, Coelho-Castelo AAM, Silva JS, Campanelli AP, Deperon Bonato VL, Garlet GP. Functional interferences in host inflammatory immune response by airway allergic inflammation restrain experimental periodontitis development in mice. J Clin Periodontol 2010; 38:131-41. [DOI: 10.1111/j.1600-051x.2010.01660.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Silva NM, Manzan RM, Carneiro WP, Milanezi CM, Silva JS, Ferro EAV, Mineo JR. Toxoplasma gondii: The severity of toxoplasmic encephalitis in C57BL/6 mice is associated with increased ALCAM and VCAM-1 expression in the central nervous system and higher blood–brain barrier permeability. Exp Parasitol 2010; 126:167-77. [DOI: 10.1016/j.exppara.2010.04.019] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2010] [Revised: 03/15/2010] [Accepted: 04/20/2010] [Indexed: 01/09/2023]
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Cardoso CR, Favoreto S, Oliveira LL, Vancim JO, Barban GB, Ferraz DB, Silva JS. Oleic acid modulation of the immune response in wound healing: a new approach for skin repair. Immunobiology 2010; 216:409-15. [PMID: 20655616 DOI: 10.1016/j.imbio.2010.06.007] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2010] [Revised: 06/24/2010] [Accepted: 06/27/2010] [Indexed: 10/19/2022]
Abstract
Injury triggers inflammatory responses and tissue repair. Several treatments are currently in use to accelerate healing; however, more efficient formulations are still needed for specific injuries. Since unsaturated fatty acids modulate immune responses, we aimed to evaluate their therapeutic effects on wound healing. Skin wounds were induced in BALB/c mice and treated for 5 days with n-3, n-9 fatty acids or vehicle (control). n-9 treated mice presented smaller wounds than control and n-3 at 120 h post-surgery (p.s.). Collagen III mRNA, TIMP1 and MMP9 were significantly elevated in n-9 group compared to n-3 or vehicle at 120 h p.s. Among the inflammatory mediators studied we found that IL-10, TNF-α and IL-17 were also higher in n-9 treated group compared to n-3 or vehicle at 120 h p.s. Interestingly, COX2 had decreased expression on wound tissue treated with n-9. Inflammatory infiltrate analysis revealed diminished frequency of CD4(+), CD8(+) and CD11b(+) cells in n-9 wounds at 24 and 120 h p.s., which was not related to cell death, since in vitro apoptosis experiments did not show any cell damage after fatty acids administration. These results suggested that unsaturated fatty acids, specifically n-9, modulate the inflammation in the wound and enhance reparative response in vivo. n-9 may be a useful tool in the treatment of cutaneous wounds.
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Affiliation(s)
- C R Cardoso
- Department of Biochemistry and Immunology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto - USP, Av. Bandeirantes 3900, 14049-900 Ribeirão Preto, SP, Brazil
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