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Ferreira MA, Castilho ADP, Vargas GS, Patini BE, Moreira ALE, dos Santos JP, Xavier RSDF, Del Negro GMB, Taborda CP, Gremião ID, Ferreira Á. First occurrence of feline sporotrichosis in a metropolitan area of Central-West Brazil. Rev Inst Med Trop Sao Paulo 2024; 66:e19. [PMID: 38597519 PMCID: PMC11000498 DOI: 10.1590/s1678-9946202466019] [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: 10/04/2023] [Accepted: 01/30/2024] [Indexed: 04/11/2024] Open
Abstract
Sporotrichosis is a neglected mycosis that affects human and animal hosts, including domestic cats. In Brazil, its most frequently diagnosed etiological agent is Sporothrix brasiliensis. Zoonotic transmission of S. brasiliensis occurs via direct contact between an infected cat and a susceptible human host. Notification of confirmed cases of feline sporotrichosis is not mandatory in Brazil. The metropolitan area of Goiania city can be considered a silent area for the occurrence of feline sporotrichosis. In this context, voluntary reporting of feline sporotrichosis cases is recommended for all healthcare professionals. This study aimed to report the first occurrence of S. brasiliensis in a cat from the metropolitan area of Goiania city. Cytopathology, mycology, thermal dimorphism and calmodulin gene amplification tests were performed. The mycological and molecular biological diagnoses corresponded to S. brasiliensis. The etiological agent of zoonotic sporotrichosis was detected in the metropolitan area of Goiania city, and therefore there is a risk of the emergence of new cases of cats infected with S. brasiliensis and the occurrence of zoonotic transmission of this fungus.
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Affiliation(s)
- Mariana Almeida Ferreira
- Universidade Federal de Goiás, Escola de Veterinária e Zootecnia, Departamento de Medicina Veterinária Preventiva, Goiânia, Goiás, Brazil
- Universidade Federal de Goiás, Escola de Veterinária e Zootecnia, Programa de Pós-Graduação em Ciência Animal, Goiânia, Goiás, Brazil
| | - Allana de Paula Castilho
- Universidade Federal de Goiás, Escola de Veterinária e Zootecnia, Departamento de Medicina Veterinária Preventiva, Goiânia, Goiás, Brazil
| | - Gabrielle Silveira Vargas
- Universidade Federal de Goiás, Escola de Veterinária e Zootecnia, Departamento de Medicina Veterinária Preventiva, Goiânia, Goiás, Brazil
| | | | - André Luís Elias Moreira
- Universidade Federal de Goiás, Instituto de Ciências Biológicas, Laboratório de Biologia Molecular, Goiânia, Goiás, Brazil
| | | | - Roseli Santos de Freitas Xavier
- Universidade de São Paulo, Faculdade de Medicina, Instituto de Medicina Tropical de São Paulo, Laboratório de Micologia Médica, São Paulo, São Paulo, Brazil
| | - Gilda Maria Barbaro Del Negro
- Universidade de São Paulo, Faculdade de Medicina, Instituto de Medicina Tropical de São Paulo, Laboratório de Micologia Médica, São Paulo, São Paulo, Brazil
| | - Carlos Pelleschi Taborda
- Universidade de São Paulo, Faculdade de Medicina, Instituto de Medicina Tropical de São Paulo, Laboratório de Micologia Médica, São Paulo, São Paulo, Brazil
- Universidade de São Paulo, Instituto de Ciências Biomédicas, Departamento de Microbiologia, São Paulo, São Paulo, Brazil
| | - Isabella Dib Gremião
- Fundação Oswaldo Cruz, Instituto Nacional de Doenças Infecciosas Evandro Chagas, Laboratório de Pesquisa Clínica em Doenças Zoonóticas dos Animais Domésticos, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Álvaro Ferreira
- Universidade Federal de Goiás, Escola de Veterinária e Zootecnia, Departamento de Medicina Veterinária Preventiva, Goiânia, Goiás, Brazil
- Universidade Federal de Goiás, Escola de Veterinária e Zootecnia, Programa de Pós-Graduação em Ciência Animal, Goiânia, Goiás, Brazil
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Rossi SA, García-Barbazán I, Chamorro-Herrero I, Taborda CP, Zaragoza Ó, Zambrano A. Use of 2D minilungs from human embryonic stem cells to study the interaction of Cryptococcus neoformans with the respiratory tract. Microbes Infect 2024; 26:105260. [PMID: 37981028 DOI: 10.1016/j.micinf.2023.105260] [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: 09/13/2023] [Revised: 11/09/2023] [Accepted: 11/16/2023] [Indexed: 11/21/2023]
Abstract
Organoids can meet the needs between the use of cell culture and in vivo work, bringing together aspects of multicellular tissues, providing a more similar in vitro system for the study of various components, including host-interactions with pathogens and drug response. Organoids are structures that resemble organs in vivo, originating from pluripotent stem cells (PSCs) or adult stem cells (ASCs). There is great interest in deepening the understanding of the use of this technology to produce information about fungal infections and their treatments. This work aims the use 2D human lung organoid derived from human embryonic stem cells (hESCs), to investigate Cryptococcus neoformans-host interactions. C. neoformans is an opportunistic fungus acquired by inhalation that causes systemic mycosis mainly in immunocompromised individuals. Our work highlights the suitability of human minilungs for the study of C. neoformans infection (adhesion, invasion and replication), the interaction with the surfactant and induction of the host's alveolar pro-inflammatory response.
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Affiliation(s)
- Suélen Andreia Rossi
- Biotechnology of Stem Cells and Organoids, Chronic Disease Program, Carlos III Health Institute, Madrid, Spain; Department of Microbiology, Biomedical Sciences Institute, University of São Paulo (USP), São Paulo, Brazil; Mycology Reference Laboratory, National Centre for Microbiology, Carlos III Health Institute, Madrid, Spain
| | - Irene García-Barbazán
- Mycology Reference Laboratory, National Centre for Microbiology, Carlos III Health Institute, Madrid, Spain
| | - Irene Chamorro-Herrero
- Biotechnology of Stem Cells and Organoids, Chronic Disease Program, Carlos III Health Institute, Madrid, Spain
| | - Carlos Pelleschi Taborda
- Department of Microbiology, Biomedical Sciences Institute, University of São Paulo (USP), São Paulo, Brazil; Tropical Medicine Institute, Department of Dermatology, Faculty of Medicine, University of São Paulo, São Paulo 05403-000, Brazil.
| | - Óscar Zaragoza
- Mycology Reference Laboratory, National Centre for Microbiology, Carlos III Health Institute, Madrid, Spain; Center for Biomedical Research in Network in Infectious Diseases (CIBERINFEC, Carlos III Health Institute, CB21/13/00105), Madrid, Spain.
| | - Alberto Zambrano
- Biotechnology of Stem Cells and Organoids, Chronic Disease Program, Carlos III Health Institute, Madrid, Spain.
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Santos Júnior SRD, Barbalho FV, Nosanchuk JD, Amaral AC, Taborda CP. Biodistribution and Adjuvant Effect of an Intranasal Vaccine Based on Chitosan Nanoparticles against Paracoccidioidomycosis. J Fungi (Basel) 2023; 9:jof9020245. [PMID: 36836359 PMCID: PMC9964167 DOI: 10.3390/jof9020245] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 11/26/2022] [Accepted: 12/03/2022] [Indexed: 02/15/2023] Open
Abstract
Paracoccidioidomycosis (PCM) is a fungal infection caused by the thermodimorphic Paracoccidioides sp. PCM mainly affects the lungs, but, if it is not contained by the immune response, the disease can spread systemically. An immune response derived predominantly from Th1 and Th17 T cell subsets facilitates the elimination of Paracoccidioides cells. In the present work, we evaluated the biodistribution of a prototype vaccine based on the immunodominant and protective P. brasiliensis P10 peptide within chitosan nanoparticles in BALB/c mice infected with P. brasiliensis strain 18 (Pb18). The generated fluorescent (FITC or Cy5.5) or non-fluorescent chitosan nanoparticles ranged in diameter from 230 to 350 nm, and both displayed a Z potential of +20 mV. Most chitosan nanoparticles were found in the upper airway, with smaller amounts localized in the trachea and lungs. The nanoparticles complexed or associated with the P10 peptide were able to reduce the fungal load, and the use of the chitosan nanoparticles reduced the necessary number of doses to achieve fungal reduction. Both vaccines were able to induce a Th1 and Th17 immune response. These data demonstrates that the chitosan P10 nanoparticles are an excellent candidate vaccine for the treatment of PCM.
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Affiliation(s)
- Samuel Rodrigues Dos Santos Júnior
- Laboratory of Pathogenic Dimorphic Fungi, Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508000, Brazil
- Correspondence: (S.R.D.S.J.); (C.P.T.)
| | - Filipe Vieira Barbalho
- Laboratory of Pathogenic Dimorphic Fungi, Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508000, Brazil
| | - Joshua D. Nosanchuk
- Department of Medicine and Department of Microbiology and Immunology—The Bronx, Albert Einstein College of Medicine, New York, NY 10461, USA
| | - Andre Correa Amaral
- Laboratory of Nano&Biotechnology, Department of Biotechnology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiânia 74605050, Brazil
| | - Carlos Pelleschi Taborda
- Laboratory of Pathogenic Dimorphic Fungi, Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508000, Brazil
- Laboratory of Medical Mycology, School of Medicine/IMT/SP-LIM53, University of São Paulo, São Paulo 05403000, Brazil
- Correspondence: (S.R.D.S.J.); (C.P.T.)
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Flórez-Álvarez L, de Souza EE, Botosso VF, de Oliveira DBL, Ho PL, Taborda CP, Palmisano G, Capurro ML, Pinho JRR, Ferreira HL, Minoprio P, Arruda E, de Souza Ferreira LC, Wrenger C, Durigon EL. Hemorrhagic fever viruses: Pathogenesis, therapeutics, and emerging and re-emerging potential. Front Microbiol 2022; 13:1040093. [PMID: 36386719 PMCID: PMC9640979 DOI: 10.3389/fmicb.2022.1040093] [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: 09/08/2022] [Accepted: 10/06/2022] [Indexed: 01/29/2023] Open
Abstract
Hemorrhagic fever viruses (HFVs) pose a threat to global public health owing to the emergence and re-emergence of highly fatal diseases. Viral hemorrhagic fevers (VHFs) caused by these viruses are mostly characterized by an acute febrile syndrome with coagulation abnormalities and generalized hemorrhage that may lead to life-threatening organ dysfunction. Currently, the events underlying the viral pathogenicity associated with multiple organ dysfunction syndrome still underexplored. In this minireview, we address the current knowledge of the mechanisms underlying VHFs pathogenesis and discuss the available development of preventive and therapeutic options to treat these infections. Furthermore, we discuss the potential of HFVs to cause worldwide emergencies along with factors that favor their spread beyond their original niches.
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Affiliation(s)
| | | | | | | | - Paulo Lee Ho
- Virology Laboratory, Butantan Institute, São Paulo, Brazil
| | | | - Giuseppe Palmisano
- Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | | | - João Renato Rebello Pinho
- Albert Einstein Institute for Teaching and Research (IIEP), Hospital Israelita Albert Einstein, São Paulo, Brazil,Hospital das Clínicas da Faculdade de Medicina, University of São Paulo, São Paulo, Brazil
| | - Helena Lage Ferreira
- Faculty of Animal Science and Food Engineering, University of São Paulo, São Paulo, Brazil
| | | | - Eurico Arruda
- Faculty of Medicine of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Luís Carlos de Souza Ferreira
- Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil,Scientific Platform Pasteur-USP, São Paulo, Brazil
| | - Carsten Wrenger
- Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil,*Correspondence: Carsten Wrenger, ; Edison Luiz Durigon,
| | - Edison Luiz Durigon
- Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil,Scientific Platform Pasteur-USP, São Paulo, Brazil,*Correspondence: Carsten Wrenger, ; Edison Luiz Durigon,
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5
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Sempere J, Rossi SA, Chamorro-Herrero I, González-Camacho F, de Lucas MP, Rojas-Cabañeros JM, Taborda CP, Zaragoza Ó, Yuste J, Zambrano A. Minilungs from Human Embryonic Stem Cells to Study the Interaction of Streptococcus pneumoniae with the Respiratory Tract. Microbiol Spectr 2022; 10:e0045322. [PMID: 35695525 PMCID: PMC9241785 DOI: 10.1128/spectrum.00453-22] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 05/20/2022] [Indexed: 11/20/2022] Open
Abstract
The new generation of organoids derived from human pluripotent stem cells holds a promising strategy for modeling host-bacteria interaction studies. Organoids recapitulate the composition, diversity of cell types, and, to some extent, the functional features of the native organ. We generated lung bud organoids derived from human embryonic stem cells to study the interaction of Streptococcus pneumoniae (pneumococcus) with the alveolar epithelium. Invasive pneumococcal disease is an important health problem that may occur as a result of the spread of pneumococcus from the lower respiratory tract to sterile sites. We show here an efficient experimental approach to model the main events of the pneumococcal infection that occur in the human lung, exploring bacterial adherence to the epithelium and internalization and triggering an innate response that includes the interaction with surfactant and the expression of representative cytokines and chemokines. Thus, this model, based on human minilungs, can be used to study pneumococcal virulence factors and the pathogenesis of different serotypes, and it will allow therapeutic interventions in a reliable human context. IMPORTANCE Streptococcus pneumoniae is responsible for high morbidity and mortalities rates worldwide, affecting mainly children and adults older than 65 years. Pneumococcus is also the most common etiologic agent of bacterial pneumonia and nonepidemic meningitis, and it is a frequent cause of bacterial sepsis. Although the introduction of pneumococcal vaccines has decreased the burden of pneumococcal disease, the rise of antibiotic-resistant strains and nonvaccine types by serotype replacement is worrisome. To study the biology of pneumococcus and to establish a reliable human model for pneumococcal pathogenesis, we generated human minilungs from embryonic stem cells. The results show that these organoids can be used to model some events occurring during the interaction of pneumococcus with the lung, such as adherence, internalization, and the initial alveolar innate response. This model also represents a great alternative for studying virulence factors involved in pneumonia, drug screening, and other therapeutic interventions.
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Affiliation(s)
- Julio Sempere
- Biotechnology of Stem Cells and Organoids, Chronic Diseases Program, Instituto de Salud Carlos III, Madrid, Spain
- Spanish Pneumococcal Reference Laboratory, Centro Nacional de Microbiología, and CIBER of Respiratory Diseases (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
| | - Suélen Andreia Rossi
- Biotechnology of Stem Cells and Organoids, Chronic Diseases Program, Instituto de Salud Carlos III, Madrid, Spain
- Department of Microbiology, Biomedical Sciences Institute, University of São Paulo (USP), São Paulo, Brazil
- Mycology Reference Laboratory, Centro Nacional de Microbiología and CIBER of Infectious Diseases (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain
| | - Irene Chamorro-Herrero
- Biotechnology of Stem Cells and Organoids, Chronic Diseases Program, Instituto de Salud Carlos III, Madrid, Spain
| | - Fernando González-Camacho
- Spanish Pneumococcal Reference Laboratory, Centro Nacional de Microbiología, and CIBER of Respiratory Diseases (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
| | - María Pilar de Lucas
- Cellular Biology Unit, Chronic Diseases Program and CIBER of Cancer (CIBERONC), Instituto de Salud Carlos III, Madrid, Spain
| | - José María Rojas-Cabañeros
- Cellular Biology Unit, Chronic Diseases Program and CIBER of Cancer (CIBERONC), Instituto de Salud Carlos III, Madrid, Spain
| | - Carlos Pelleschi Taborda
- Department of Microbiology, Biomedical Sciences Institute, University of São Paulo (USP), São Paulo, Brazil
| | - Óscar Zaragoza
- Mycology Reference Laboratory, Centro Nacional de Microbiología and CIBER of Infectious Diseases (CIBERINFEC), Instituto de Salud Carlos III, Madrid, Spain
| | - José Yuste
- Spanish Pneumococcal Reference Laboratory, Centro Nacional de Microbiología, and CIBER of Respiratory Diseases (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
| | - Alberto Zambrano
- Biotechnology of Stem Cells and Organoids, Chronic Diseases Program, Instituto de Salud Carlos III, Madrid, Spain
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6
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Buccheri R, Duarte-Neto AN, Silva FLB, Haddad GC, Silva LBRD, Azevedo Netto R, Ledesma FL, Taborda CP, Benard G. Chronic exposure to cigarette smoke transiently worsens the disease course in a mouse model of pulmonary paracoccidioidomycosis. Rev Inst Med Trop Sao Paulo 2022; 64:e71. [DOI: 10.1590/s1678-9946202264071] [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] [Received: 07/22/2022] [Accepted: 09/26/2022] [Indexed: 11/16/2022] Open
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7
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Kischkel B, Boniche-Alfaro C, Menezes IDG, Rossi SA, Angeli CB, de Almeida SR, Palmisano G, Lopes-Bezerra L, Nosanchuk JD, Taborda CP. Immunoproteomic and Immunopeptidomic Analyses of Histoplasma capsulatum Reveal Promiscuous and Conserved Epitopes Among Fungi With Vaccine Potential. Front Immunol 2021; 12:764501. [PMID: 34880863 PMCID: PMC8645968 DOI: 10.3389/fimmu.2021.764501] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 08/25/2021] [Accepted: 10/29/2021] [Indexed: 12/27/2022] Open
Abstract
As there are more than 6 million human deaths due to mycoses each year, there is an urgent need to develop fungal vaccines. Moreover, given the similarities among pathogenic fungi, it may be possible to create a multi-fungi vaccine. In this study, we combined immunoproteomic and immunopeptidomic methods, for which we have adapted a technique based on co-immunoprecipitation (Co-IP) that made it possible to map Histoplasma capsulatum epitopes for the first time in a natural context using murine dendritic cells (DCs) and macrophages (Mφ). Although polysaccharide epitopes exist, this research focused on mapping protein epitopes as these are more immunogenic. We used different algorithms to screen proteins and peptides identified by two-dimensional electrophoresis (2-D) and Co-IP. Seventeen proteins were revealed by 2-D gels, and 45 and 24 peptides from distinct proteins were presented by DCs and Mφ, respectively. We then determined which epitopes were restricted to MHC-I and II from humans and mice and showed high promiscuity, but lacked identity with human proteins. The 4 most promising peptides were synthesized, and the peptides with and without incorporation into glucan particles induced CD4+ and CD8+ T cell proliferation and produced a Th1 and Th17 response marked by the secretion of high levels of IFN-γ, IL-17 and IL-2. These epitopes were from heat shock protein 60, enolase, and the ATP-dependent molecular chaperone HSC82, and they each have a high degree of identity with proteins expressed by other medically important pathogenic fungi. Thus, the epitopes described in this study have the potential for use in the development of vaccines that could result in cross-protection among fungal species.
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Affiliation(s)
- Brenda Kischkel
- Department of Microbiology, Biomedical Sciences Institute, University of São Paulo, São Paulo, Brazil
| | - Camila Boniche-Alfaro
- Department of Microbiology, Biomedical Sciences Institute, University of São Paulo, São Paulo, Brazil
| | - Isabela de Godoy Menezes
- Department of Clinical and Toxicological Analysis, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Suelen Andreia Rossi
- Department of Microbiology, Biomedical Sciences Institute, University of São Paulo, São Paulo, Brazil.,Department of Dermatology, Tropical Medicine Institute, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - Claudia Blanes Angeli
- Department of Parasitology, Biomedical Sciences Institute, University of São Paulo, São Paulo, Brazil
| | - Sandro Rogério de Almeida
- Department of Clinical and Toxicological Analysis, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Giuseppe Palmisano
- Department of Parasitology, Biomedical Sciences Institute, University of São Paulo, São Paulo, Brazil
| | - Leila Lopes-Bezerra
- Department of Microbiology, Biomedical Sciences Institute, University of São Paulo, São Paulo, Brazil
| | - Joshua D Nosanchuk
- Division of Infectious Diseases, Department of Medicine, Albert Einstein College of Medicine, New York, NY, United States.,Department of Microbiology and Immunology, Albert Einstein College of Medicine, New York, NY, United States
| | - Carlos Pelleschi Taborda
- Department of Microbiology, Biomedical Sciences Institute, University of São Paulo, São Paulo, Brazil.,Department of Dermatology, Tropical Medicine Institute, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
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Boniche-Alfaro C, Kischkel B, Thomaz L, Carvalho-Gomes MM, Lopes-Bezerra LM, Nosanchuk JD, Taborda CP. Antibody- Based Immunotherapy Combined With Antimycotic Drug TMP- SMX to Treat Infection With Paracoccidioides brasiliensis. Front Immunol 2021; 12:725882. [PMID: 34737741 PMCID: PMC8562153 DOI: 10.3389/fimmu.2021.725882] [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: 06/15/2021] [Accepted: 09/24/2021] [Indexed: 01/17/2023] Open
Abstract
Monoclonal antibodies (mAbs) are promising alternatives to treat infectious diseases, especially given their potential for applications in combination therapies with antimicrobial drugs to enhance the antifungal efficacy. Protection mediated by mAbs used to treat experimental paracoccidioidomycosis (PCM) has been demonstrated previously. Our aim in the present work was to characterize a monoclonal antibody (mAbF1.4) raised against a cell wall glycoconjugate fraction of Paracoccidioides spp. and to analyze its efficacy combined with trimethoprim-sulfamethoxazole (TMP/SMX) as treatment for experimental PCM. We demonstrated that the epitope recognized by mAbF1.4 is consistent with branched glucose residues present on a cell wall β-glucan polymer. In vitro, mAbF1.4 increased the phagocytic capacity and nitric oxide concentration induced by the macrophage cell line J774.1A, and this resulted in a significant reduction in the viability of the opsonophagocytized yeasts. In vivo, we detected a significant reduction in pulmonary fungal burdens of mice treated with mAbF1.4 in association with TMP/SMX, which correlated with increased pulmonary concentrations (determined by ELISA) of IFN- γ, TNF-α, IL-10 and IL-17. In parallel, we observed a decrease in IL-4, suggesting that the treatment was associated with a mixed Th1-Th17 type immune response. Histopathology of lung segments from mice receiving the combination therapy showed a significant reduction in granulomas, which were well-defined, and improved maintenance of lung architecture. These findings demonstrate that mAbF1.4 + TMP/SMX therapy is a promising approach to combat PCM as well as decrease disease sequelae and highlights the potential benefits of immune mediators in PCM combined immunotherapy.
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Affiliation(s)
- Camila Boniche-Alfaro
- Instituto de Ciências Biomédicas, Departamento de Microbiologia, Universidade de São Paulo, São Paulo, Brazil
| | - Brenda Kischkel
- Instituto de Ciências Biomédicas, Departamento de Microbiologia, Universidade de São Paulo, São Paulo, Brazil
| | - Luciana Thomaz
- Instituto de Ciências Biomédicas, Departamento de Microbiologia, Universidade de São Paulo, São Paulo, Brazil
| | | | - Leila M Lopes-Bezerra
- Instituto de Ciências Biomédicas, Departamento de Microbiologia, Universidade de São Paulo, São Paulo, Brazil.,BIDiagnostics, Centro de Inovação, Empreendedorismo e Tecnologia (CIETEC)/Universidade de São Paulo, São Paulo, Brazil
| | - Joshua Daniel Nosanchuk
- Department of Medicine (Division of Infectious Diseases), Microbiology and Immunology, Albert Einstein College of Medicine, New York City, NY, United States
| | - Carlos Pelleschi Taborda
- Instituto de Ciências Biomédicas, Departamento de Microbiologia, Universidade de São Paulo, São Paulo, Brazil.,Laboratory of Medical Mycology, Institute of Tropical Medicine of São Paulo, Department of Dermatology, School of Medicine, University of São Paulo, São Paulo, Brazil
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9
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Dias LDS, Silva LBR, Nosanchuk JD, Taborda CP. Neutrophil Cells Are Essential for The Efficacy of a Therapeutic Vaccine against Paracoccidioidomycosis. J Fungi (Basel) 2021; 7:jof7060416. [PMID: 34073466 PMCID: PMC8226764 DOI: 10.3390/jof7060416] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 05/04/2021] [Revised: 05/21/2021] [Accepted: 05/23/2021] [Indexed: 11/25/2022] Open
Abstract
Paracoccidioidomycosis (PCM), caused by the Paracoccidioides species, is a systemic disease endemic in several Latin American countries, mainly in Brazil, Colombia, Argentina, and Venezuela. Current treatment approaches are challenging as they require prolonged durations of antifungal drugs that have potential toxicities, and despite antifungals, relapses are common. Hence, new therapeutic approaches, such as vaccines, are being investigated. The therapeutic vaccine consisting of peptide P10 associated with lipid cationic DODAB (P10+DODAB) is effective in murine models of PCM. However, the specific immune mechanisms required for the protective response has not been fully elucidated. The present work aims at evaluating the participation of neutrophils in the immune response induced by P10+DODAB. We found that the vaccine reduced both the influx of pulmonary neutrophils and the fungal load in comparison to infected animals that did not receive this treatment. The parenchymal architecture of the lungs of P10+DODAB-treated animals was largely preserved with only a few granulomas present, and tissue cytokine analysis showed a Th1 cytokine profile with augmented levels of IL-12, IFN-γ and TNF-α, and low levels of IL-4. When neutrophils were depleted 24 h prior to each treatment, the effectiveness of the P10+DODAB vaccine was completely lost as the fungal burdens remained high and histological examination showed a marked inflammation and fungal dissemination with a dysregulated cytokine response. In conclusion, these findings indicate that neutrophils are vital to ensure the triggering of an effective immune response to P10+DODAB.
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Affiliation(s)
- Lucas dos Santos Dias
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000, Brazil; (L.d.S.D.); (L.B.R.S.)
| | - Leandro B. R. Silva
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000, Brazil; (L.d.S.D.); (L.B.R.S.)
| | - Joshua D. Nosanchuk
- Departments of Medicine (Division of Infectious Diseases), Microbiology and Immunology, Albert Einstein College of Medicine, New York, NY 10461, USA;
| | - Carlos Pelleschi Taborda
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000, Brazil; (L.d.S.D.); (L.B.R.S.)
- Laboratory of Medical Mycology, Tropical Medicine Institute USP-LIM53, University of São Paulo, São Paulo 05403-000, Brazil
- Correspondence:
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10
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Scorzoni L, Alves de Paula e Silva AC, de Oliveira HC, Tavares dos Santos C, de Lacorte Singulani J, Akemi Assato P, Maria Marcos C, Teodoro Oliveira L, Ferreira Fregonezi N, Rossi DCP, Buffoni Roque da Silva L, Pelleschi Taborda C, Fusco-Almeida AM, Soares Mendes-Giannini MJ. In Vitro and In Vivo Effect of Peptides Derived from 14-3-3 Paracoccidioides spp. Protein. J Fungi (Basel) 2021; 7:jof7010052. [PMID: 33451062 PMCID: PMC7828505 DOI: 10.3390/jof7010052] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 12/14/2020] [Revised: 12/28/2020] [Accepted: 01/05/2021] [Indexed: 02/06/2023] Open
Abstract
Background: Paracoccidioidomycosis (PCM) is a chronic disease that causes sequelae and requires prolonged treatment; therefore, new therapeutic approaches are necessary. In view of this, three peptides from Paracoccidioides brasiliensis 14-3-3 protein were selected based on its immunogenicity and therapeutic potential. Methods: The in vitro antifungal activity and cytotoxicity of the 14-3-3 peptides were evaluated. The influence of the peptides in immunological and survival aspects was evaluated in vivo, using Galleria mellonella and the expression of antimicrobial peptide genes in Caenorhabditis elegans. Results: None of the peptides were toxic to HaCaT (skin keratinocyte), MRC-5 (lung fibroblast), and A549 (pneumocyte) cell lines, and only P1 exhibited antifungal activity against Paracoccidioides spp. The peptides could induce an immune response in G. mellonella. Moreover, the peptides caused a delay in the death of Paracoccidioides spp. infected larvae. Regarding C. elegans, the three peptides were able to increase the expression of the antimicrobial peptides. These peptides had essential effects on different aspects of Paracoccidioides spp. infection showing potential for a therapeutic vaccine. Future studies using mammalian methods are necessary to validate our findings.
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Affiliation(s)
- Liliana Scorzoni
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo 14800-903, Brazil; (L.S.); (A.C.A.d.P.eS.); (H.C.d.O.); (C.T.d.S.); (J.d.L.S.); (P.A.A.); (C.M.M.); (L.T.O.); (N.F.F.); (A.M.F.-A.)
| | - Ana Carolina Alves de Paula e Silva
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo 14800-903, Brazil; (L.S.); (A.C.A.d.P.eS.); (H.C.d.O.); (C.T.d.S.); (J.d.L.S.); (P.A.A.); (C.M.M.); (L.T.O.); (N.F.F.); (A.M.F.-A.)
| | - Haroldo Cesar de Oliveira
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo 14800-903, Brazil; (L.S.); (A.C.A.d.P.eS.); (H.C.d.O.); (C.T.d.S.); (J.d.L.S.); (P.A.A.); (C.M.M.); (L.T.O.); (N.F.F.); (A.M.F.-A.)
| | - Claudia Tavares dos Santos
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo 14800-903, Brazil; (L.S.); (A.C.A.d.P.eS.); (H.C.d.O.); (C.T.d.S.); (J.d.L.S.); (P.A.A.); (C.M.M.); (L.T.O.); (N.F.F.); (A.M.F.-A.)
| | - Junya de Lacorte Singulani
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo 14800-903, Brazil; (L.S.); (A.C.A.d.P.eS.); (H.C.d.O.); (C.T.d.S.); (J.d.L.S.); (P.A.A.); (C.M.M.); (L.T.O.); (N.F.F.); (A.M.F.-A.)
| | - Patricia Akemi Assato
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo 14800-903, Brazil; (L.S.); (A.C.A.d.P.eS.); (H.C.d.O.); (C.T.d.S.); (J.d.L.S.); (P.A.A.); (C.M.M.); (L.T.O.); (N.F.F.); (A.M.F.-A.)
| | - Caroline Maria Marcos
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo 14800-903, Brazil; (L.S.); (A.C.A.d.P.eS.); (H.C.d.O.); (C.T.d.S.); (J.d.L.S.); (P.A.A.); (C.M.M.); (L.T.O.); (N.F.F.); (A.M.F.-A.)
| | - Lariane Teodoro Oliveira
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo 14800-903, Brazil; (L.S.); (A.C.A.d.P.eS.); (H.C.d.O.); (C.T.d.S.); (J.d.L.S.); (P.A.A.); (C.M.M.); (L.T.O.); (N.F.F.); (A.M.F.-A.)
| | - Nathália Ferreira Fregonezi
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo 14800-903, Brazil; (L.S.); (A.C.A.d.P.eS.); (H.C.d.O.); (C.T.d.S.); (J.d.L.S.); (P.A.A.); (C.M.M.); (L.T.O.); (N.F.F.); (A.M.F.-A.)
| | - Diego Conrado Pereira Rossi
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000, Brazil; (D.C.P.R.); (L.B.R.d.S.); (C.P.T.)
| | - Leandro Buffoni Roque da Silva
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000, Brazil; (D.C.P.R.); (L.B.R.d.S.); (C.P.T.)
| | - Carlos Pelleschi Taborda
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000, Brazil; (D.C.P.R.); (L.B.R.d.S.); (C.P.T.)
| | - Ana Marisa Fusco-Almeida
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo 14800-903, Brazil; (L.S.); (A.C.A.d.P.eS.); (H.C.d.O.); (C.T.d.S.); (J.d.L.S.); (P.A.A.); (C.M.M.); (L.T.O.); (N.F.F.); (A.M.F.-A.)
| | - Maria José Soares Mendes-Giannini
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo 14800-903, Brazil; (L.S.); (A.C.A.d.P.eS.); (H.C.d.O.); (C.T.d.S.); (J.d.L.S.); (P.A.A.); (C.M.M.); (L.T.O.); (N.F.F.); (A.M.F.-A.)
- Correspondence:
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11
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de Araújo MV, Santos Júnior SRD, Nosanchuk JD, Taborda CP. Therapeutic Vaccination with Cationic Liposomes Formulated with Dioctadecyldimethylammonium and Trehalose Dibehenate (CAF01) and Peptide P10 Is Protective in Mice Infected with Paracoccidioides brasiliensis. J Fungi (Basel) 2020; 6:jof6040347. [PMID: 33302372 PMCID: PMC7762540 DOI: 10.3390/jof6040347] [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: 10/16/2020] [Revised: 11/25/2020] [Accepted: 12/04/2020] [Indexed: 02/07/2023] Open
Abstract
The peptide P10 is a vaccine candidate for Paracoccidioidomycosis, a systemic mycosis caused by fungal species of the genus Paracoccidioides spp. We have previously shown that peptide P10 vaccination, in the presence of several different adjuvants, induced a protective cellular immune response mediated by CD4+ Th1 lymphocytes that was associated with the increased production of IFN-γ in mice challenged with a virulent isolate of Paracoccidoides brasiliensis. Cationic liposomes formulated with dioctadecyldimethylammonium and trehalose dibehenate (DDA/TDB, termed also CAF01–cationic adjuvant formulation) have been developed for safe administration in humans and CAF01 liposomes are utilized as an adjuvant for modulating a robust Th1/Th17 cellular response. We evaluated the efficacy of the adsorption of peptide P10 to CAF01 cationic liposomes and used the generated liposomes to vaccinate C57Bl/6 mice infected with P. brasiliensis. Our results showed that P10 was efficiently adsorbed onto CAF01 liposomes. The vaccination of infected mice with cationic liposomes formulated with DDA/TDB 250/50 µg/mL and 20 µg of P10 induced an effective cellular immune response with increased levels of Th17 cytokines, which correlated with significant decreases in the fungal burdens in lungs and protective granulomatous tissue responses. Hence, cationic liposomes of DDA/TDB 250/50 µg/mL with 20 µg of P10 are a promising therapeutic for safely and effectively improving the treatment of paracoccidioidomycosis.
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Affiliation(s)
- Marcelo Valdemir de Araújo
- Departamento de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo 05508-000, Brazil; (M.V.d.A.); (S.R.D.S.J.)
| | - Samuel Rodrigues Dos Santos Júnior
- Departamento de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo 05508-000, Brazil; (M.V.d.A.); (S.R.D.S.J.)
| | - Joshua D. Nosanchuk
- Departments of Medicine (Division of Infectious Disease), Microbiology and Immunology, Albert Einstein College of Medicine and Montefiore Medical Center, Bronx, NY 10461, USA;
| | - Carlos Pelleschi Taborda
- Departamento de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo 05508-000, Brazil; (M.V.d.A.); (S.R.D.S.J.)
- Departamento de Dermatologia, Instituto de Medicina Tropical de São Paulo—LIM53, Faculdade de Medicina, Universidade de São Paulo, São Paulo 4023-062, Brazil
- Correspondence: ; Tel.: +55-11-3091-7351
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12
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Boniche C, Rossi SA, Kischkel B, Vieira Barbalho F, Nogueira D’Aurea Moura Á, Nosanchuk JD, Travassos LR, Pelleschi Taborda C. Immunotherapy against Systemic Fungal Infections Based on Monoclonal Antibodies. J Fungi (Basel) 2020; 6:jof6010031. [PMID: 32121415 PMCID: PMC7151209 DOI: 10.3390/jof6010031] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Revised: 02/22/2020] [Accepted: 02/25/2020] [Indexed: 12/17/2022] Open
Abstract
The increasing incidence in systemic fungal infections in humans has increased focus for the development of fungal vaccines and use of monoclonal antibodies. Invasive mycoses are generally difficult to treat, as most occur in vulnerable individuals, with compromised innate and adaptive immune responses. Mortality rates in the setting of our current antifungal drugs remain excessively high. Moreover, systemic mycoses require prolonged durations of antifungal treatment and side effects frequently occur, particularly drug-induced liver and/or kidney injury. The use of monoclonal antibodies with or without concomitant administration of antifungal drugs emerges as a potentially efficient treatment modality to improve outcomes and reduce chemotherapy toxicities. In this review, we focus on the use of monoclonal antibodies with experimental evidence on the reduction of fungal burden and prolongation of survival in in vivo disease models. Presently, there are no licensed monoclonal antibodies for use in the treatment of systemic mycoses, although the potential of such a vaccine is very high as indicated by the substantial promising results from several experimental models.
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Affiliation(s)
- Camila Boniche
- Biomedical Sciences Institute, Department of Microbiology, University of São Paulo, Sao Paulo 05508-000, Brazil; (C.B.); (S.A.R.); (B.K.); (F.V.B.)
| | - Suélen Andreia Rossi
- Biomedical Sciences Institute, Department of Microbiology, University of São Paulo, Sao Paulo 05508-000, Brazil; (C.B.); (S.A.R.); (B.K.); (F.V.B.)
| | - Brenda Kischkel
- Biomedical Sciences Institute, Department of Microbiology, University of São Paulo, Sao Paulo 05508-000, Brazil; (C.B.); (S.A.R.); (B.K.); (F.V.B.)
| | - Filipe Vieira Barbalho
- Biomedical Sciences Institute, Department of Microbiology, University of São Paulo, Sao Paulo 05508-000, Brazil; (C.B.); (S.A.R.); (B.K.); (F.V.B.)
| | - Ágata Nogueira D’Aurea Moura
- Tropical Medicine Institute, Department of Dermatology, Faculty of Medicine, University of Sao Paulo, Sao Paulo 05403-000, Brazil;
| | - Joshua D. Nosanchuk
- Departments of Medicine (Division of Infectious Diseases) and Microbiology and Immunology, Albert Einstein College of Medicine, New York, NY 10461, USA;
| | - Luiz R. Travassos
- Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo, Sao Paulo 04021-001, Brazil;
| | - Carlos Pelleschi Taborda
- Biomedical Sciences Institute, Department of Microbiology, University of São Paulo, Sao Paulo 05508-000, Brazil; (C.B.); (S.A.R.); (B.K.); (F.V.B.)
- Tropical Medicine Institute, Department of Dermatology, Faculty of Medicine, University of Sao Paulo, Sao Paulo 05403-000, Brazil;
- Correspondence:
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13
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Santana AE, Reche-Junior A, Sellera FP, Taborda CP. A comment on "First report of tinea corporis caused by Arthroderma benhamiae in Brazil". Braz J Microbiol 2020; 51:1463-1464. [PMID: 31898250 DOI: 10.1007/s42770-019-00220-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Accepted: 12/18/2019] [Indexed: 11/30/2022] Open
Affiliation(s)
- Aline Elisa Santana
- Department of Veterinary Internal Medicine, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil. .,Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.
| | - Archivaldo Reche-Junior
- Department of Veterinary Internal Medicine, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
| | - Fábio Parra Sellera
- Department of Veterinary Internal Medicine, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
| | - Carlos Pelleschi Taborda
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
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14
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Xisto MIDDS, Henao JEM, Dias LDS, Santos GMP, Calixto RDOR, Bernardino MC, Taborda CP, Barreto-Bergter E. Glucosylceramides From Lomentospora prolificans Induce a Differential Production of Cytokines and Increases the Microbicidal Activity of Macrophages. Front Microbiol 2019; 10:554. [PMID: 30967849 PMCID: PMC6440385 DOI: 10.3389/fmicb.2019.00554] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [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: 11/06/2018] [Accepted: 03/04/2019] [Indexed: 11/16/2022] Open
Abstract
Lomentospora prolificans is an emerging opportunistic fungus with a high resistance to antifungal agents and it can cause localized infections in immunocompetent patients and disseminated infections with a high mortality rate in immunosuppressed patients. Glucosylceramides (GlcCer) are synthetized in the majority of known fungal pathogens. They are bioactive molecules presenting different functions, such as involvement in fungal growth and morphological transitions in several fungi. The elucidation of the primary structure of the fungal surface glycoconjugates could contribute for the understanding of the mechanisms of pathogenicity. In this work, GlcCer species were isolated from mycelium and conidia forms of L. prolificans and their chemical structures were elucidated by mass spectrometry (ESI-MS). GlcCer purified from both forms presented a major species at m/z 750 that corresponds to N-2-hydroxyhexadecanoyl-1-β-D-glucopyranosyl-9-methyl-4,8-sphingadienine. Monoclonal antibodies against GlcCer could recognize L. prolificans GlcCer species from mycelium and conidia, suggesting a conserved epitope in fungal GlcCer. In addition, in vivo assays showed that purified GlcCer species from both forms was able to induce a high secretion of pro-inflammatory cytokines by splenocytes. GlcCer species also promote the recruitment of polymorphonuclear, eosinophils, small peritoneal macrophage (SPM) and mononuclear cells to the peritoneal cavity. GlcCer species were also able to induce the oxidative burst by peritoneal macrophages with NO and superoxide radicals production, and to increase the killing of L. prolificans conidia by peritoneal macrophages. These results indicate that GlcCer species from L. prolificans are a potent immune response activator.
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Affiliation(s)
- Mariana Ingrid Dutra da Silva Xisto
- Laboratório de Química Biológica de Microrganismos, Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Julián Esteban Muñoz Henao
- Studies in Translational Microbiology and Emerging Diseases Research Group, School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Lucas Dos Santos Dias
- Institute of Biomedical Sciences, Department of Microbiology, Medical Mycology Laboratory, Medical School and Tropical Medicine Institute, University of São Paulo, São Paulo, Brazil.,Department of Pediatric, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, United States
| | - Giulia Maria Pires Santos
- Instituto Biomédico, Departamento de Microbiologia e Parasitologia, Universidade Federal Fluminense, Niterói, Brazil
| | - Renata de Oliveira Rocha Calixto
- Laboratório de Química Biológica de Microrganismos, Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Mariana Collodetti Bernardino
- Laboratório de Química Biológica de Microrganismos, Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Carlos Pelleschi Taborda
- Institute of Biomedical Sciences, Department of Microbiology, Medical Mycology Laboratory, Medical School and Tropical Medicine Institute, University of São Paulo, São Paulo, Brazil
| | - Eliana Barreto-Bergter
- Laboratório de Química Biológica de Microrganismos, Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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Amorim-Conselheiro J, Orico LD, Galvão-Dias MA, Grigorio IM, Neto HM, Da Rosa AR, Oliveira DC, Taborda CP, Reis-Menezes AA. Molecular detection of Histoplasma capsulatum indoors: A public health approach. Rev Iberoam Micol 2019; 36:79-82. [PMID: 30862390 DOI: 10.1016/j.riam.2019.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 12/18/2018] [Accepted: 01/07/2019] [Indexed: 10/27/2022] Open
Abstract
BACKGROUND Histoplasmosis, caused by the dimorphic fungus Histoplasma capsulatum, represents an important public health problem, especially in urban environments where bats and humans cohabit indoors. AIMS To detect the presence of H. capsulatum indoors, using samples of bat droppings collected in roost sites inside houses. METHODS A Real-Time TaqMan PCR assay targeting the ITS1 region of the ribosomal DNA of H. capsulatum was carried out. RESULTS Fifty-nine sampling points in the municipality of São Paulo were inspected, all of them located at inhabited places. H. capsulatum was isolated from nine samples. CONCLUSIONS The rapid identification and monitoring of sites where the fungus is present may contribute to make a more reliable database of H. capsulatum distribution.
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Affiliation(s)
- Juliana Amorim-Conselheiro
- Laboratory of Zoonoses and Vector-borne Diseases, Zoonoses Surveillance Division - Health Surveillance Coordination, São Paulo, SP, Brazil
| | - Lilian Dias Orico
- Laboratory of Zoonoses and Vector-borne Diseases, Zoonoses Surveillance Division - Health Surveillance Coordination, São Paulo, SP, Brazil
| | - Maria Adelaide Galvão-Dias
- Laboratory of Zoonoses and Vector-borne Diseases, Zoonoses Surveillance Division - Health Surveillance Coordination, São Paulo, SP, Brazil
| | - Iraci Martins Grigorio
- Laboratory of Zoonoses and Vector-borne Diseases, Zoonoses Surveillance Division - Health Surveillance Coordination, São Paulo, SP, Brazil
| | - Hildebrando Montenegro Neto
- Laboratory of Zoonoses and Vector-borne Diseases, Zoonoses Surveillance Division - Health Surveillance Coordination, São Paulo, SP, Brazil
| | - Adriana Ruckert Da Rosa
- Chiroptera Section, Zoonoses Surveillance Division - Health Surveillance Coordination, São Paulo, SP, Brazil
| | - Débora Cardoso Oliveira
- Chiroptera Section, Zoonoses Surveillance Division - Health Surveillance Coordination, São Paulo, SP, Brazil
| | - Carlos Pelleschi Taborda
- Laboratory of Pathogenic Dimorphic Fungi, University of São Paulo - Institute of Biomedical Sciences, Department of Microbiology, São Paulo, SP, Brazil
| | - Adriana Araujo Reis-Menezes
- Laboratory of Zoonoses and Vector-borne Diseases, Zoonoses Surveillance Division - Health Surveillance Coordination, São Paulo, SP, Brazil.
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Santana AE, Taborda CP, Severo JS, Rittner GMG, Muñoz JE, Larsson CE, Larsson CE. Development of enzyme immunoassays (ELISA and Western blot) for the serological diagnosis of dermatophytosis in symptomatic and asymptomatic cats. Med Mycol 2018; 56:95-102. [PMID: 28340215 DOI: 10.1093/mmy/myx019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Accepted: 02/07/2017] [Indexed: 11/13/2022] Open
Abstract
Dermatophytosis is the most common fungal infection in cats worldwide and plays an important role in both animal and human health due to their high zoonotic potential. Effective screening is a strong preventive measure and the fungal culture is quite useful but requires full laboratorial experience and it takes a long time to obtain the result. A rapid and accurate screening test for dermatophytosis in cats is crucial for the effective control of disease outbreaks. The aim of this study was to develop and evaluate the diagnostic efficacy of enzyme immunoassays (ELISA and Western blot [WB]) for the rapid and precise diagnosis of dermatophytosis in cats. Seventy cats of various ages were divided into three groups: S (symptomatic, n = 20), AS (asymptomatic, n = 30), and N (negative, n = 20). All animals were submitted to fungal culture and blood samples for carrying out the serological tests. A significant difference (P < 0.05) was found between IgG-specific levels of sera of Microsporum canis positive and negative animals. There was no statistic difference between groups symptomatic and asymptomatic. The ELISA test showed sensitivity of 94% and specificity of 75%. Receiver operating characteristic (ROC) analysis also showed higher diagnostic accuracy (AUC 0.925). The WB technique detected 13 bands, and the 50 kDa protein was considered the most immunogenic protein, observing reactivity in 83.3% in the symptomatic group and 66.6% in the asymptomatic group. The study concluded that ELISA and WB were useful tools to reliably detect cats that have been exposed to M. canis.
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Affiliation(s)
- Aline Elisa Santana
- Department of Veterinary Internal Medicine, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
| | - Carlos Pelleschi Taborda
- Departament of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.,Laboratory of Medical Mycology IMTSP- LIM53, University of São Paulo, São Paulo, Brazil
| | - Julia So Severo
- Department of Veterinary Internal Medicine, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
| | - Glauce Mary Gomes Rittner
- Departament of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Julian Esteban Muñoz
- Departament of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Carlos Eduardo Larsson
- Department of Veterinary Internal Medicine, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
| | - Carlos Eduardo Larsson
- Department of Veterinary Internal Medicine, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
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17
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de Freitas ALD, Kaplum V, Rossi DCP, da Silva LBR, Melhem MDSC, Taborda CP, de Mello JCP, Nakamura CV, Ishida K. Proanthocyanidin polymeric tannins from Stryphnodendron adstringens are effective against Candida spp. isolates and for vaginal candidiasis treatment. J Ethnopharmacol 2018; 216:184-190. [PMID: 29325916 DOI: 10.1016/j.jep.2018.01.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 01/05/2018] [Accepted: 01/06/2018] [Indexed: 06/07/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The stem bark of Stryphnodendron adstringens (Mart.) Coville is popularly used as anti-inflammatory, astringent and in the treatment of wounds and vaginal infections. Several pharmacological activities have been scientifically proven by in vitro and in vivo experimental assays for antibacterial, antiviral, antiprotozoan, anti-inflammatory and antioxidant. AIM OF THE STUDY We investigated whether proanthocyanidin polymeric tannins from the Stryphnodendron adstringens stem bark with antifungal activity against Candida albicans in vitro are also active against planktonic and biofilm cells of Candida non-albicans (CNA, including fluconazole-resistant isolates) and are capable of controlling Candida vaginitis in vivo. MATERIALS AND METHODS A total of 46 clinical isolates and 5 reference Candida spp. strains were used in this study. The antifungal effects in vitro of tannins (F2 and sub-fraction F2.4) from S. adstringens stem bark were evaluated using a broth microdilution assay (for planktonic yeasts and biofilm dispersion cells) or by XTT assay (for biofilm sessile cells). For in vivo antifungal activity analysis, mice with vaginal infection by C. albicans or C. glabrata were treated with a topical gel containing F2 (alone or combined with oral fluconazole), and the vaginal histopathology and fungal burden (by CFU counts from vaginal homogenates) were analyzed. RESULTS F2 and F2.4 inhibited the proliferation of planktonic cells of Candida spp., especially that of fluconazole- and/or amphotericin B-resistant isolates. F2 and F2.4 also inhibited the proliferation of Candida biofilm dispersion cells. Moreover, a gel containing F2 efficiently controlled vaginal infection by C. albicans and C. glabrata in mice, with no noticeable toxicity to vaginal tissue. CONCLUSIONS Our data show that proanthocyanidin polymeric tannins obtained from S. adstringens have antifungal activity in vitro against C. albicans and CNA (including fluconazole-resistant isolates) and presented efficacy in the control of candidiasis in murine model. Therefore, these tannins have potential use in the treatment of vaginal candidiasis, representing interesting alternatives to current antifungals.
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Affiliation(s)
| | - Vanessa Kaplum
- Departamento de Ciências Básicas da Saúde, Universidade Estadual de Maringá, PR, Brazil.
| | | | | | | | - Carlos Pelleschi Taborda
- Departamento de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, SP, Brazil; Laboratory of Medical Mycology, Tropical Medicine Institute USP-LIM53, University of São Paulo, São Paulo, Brazil.
| | | | - Celso Vataru Nakamura
- Departamento de Ciências Básicas da Saúde, Universidade Estadual de Maringá, PR, Brazil.
| | - Kelly Ishida
- Departamento de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, SP, Brazil.
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Galati LHH, Tomimori J, Taborda CP, Michalany NS, Larsson Júnior CE, Larsson CE. Esporotricose - gato como fonte de infecção em foco epidêmico familiar em Guarulhos, São Paulo: relato de caso. Braz J Vet Res Anim Sci 2017. [DOI: 10.11606/issn.1678-4456.bjvras.2017.133772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
A esporotricose é uma dermatozoonose que tem como agentes etiológicos fungos do gênero Sporothrix. É responsável por quadros micóticos ditos de implantação. Essa micose, de características antropo e saprozoonóticas e cujas principais fontes de infecção são os felinos domésticos, o solo e os vegetais, tem sido responsável por surtos epizoóticos e epidêmicos no sul e sudeste brasileiro. Este relato apresenta o caso de um felino diagnosticado e tratado para esporotricose pelo Serviço de Dermatologia do Hospital Veterinário da FMVZ/USP, após ter sido encaminhado pelo Departamento de Dermatologia da EPM/Unifesp, onde os proprietários do animal estavam sendo tratados para esporotricose humana.
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Holanda RA, Muñoz JE, Dias LS, Silva LBR, Santos JRA, Pagliari S, Vieira ÉLM, Paixão TA, Taborda CP, Santos DA, Bruña-Romero O. Recombinant vaccines of a CD4+ T-cell epitope promote efficient control of Paracoccidioides brasiliensis burden by restraining primary organ infection. PLoS Negl Trop Dis 2017; 11:e0005927. [PMID: 28938005 PMCID: PMC5627964 DOI: 10.1371/journal.pntd.0005927] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [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: 03/08/2017] [Revised: 10/04/2017] [Accepted: 09/02/2017] [Indexed: 11/19/2022] Open
Abstract
Paracoccidioidomycosis (PCM) is an infectious disease endemic to South America, caused by the thermally dimorphic fungi Paracoccidioides. Currently, there is no effective human vaccine that can be used in prophylactic or therapeutic regimes. We tested the hypothesis that the immunogenicity of the immunodominant CD4+ T-cell epitope (P10) of Paracoccidioides brasiliensis gp43 antigen might be significantly enhanced by using a hepatitis B virus-derived particle (VLP) as an antigen carrier. This chimera was administered to mice as a (His)6-purified protein (rPbT) or a replication-deficient human type 5 adenoviral vector (rAdPbT) in an immunoprophylaxis assay. The highly virulent Pb18 yeast strain was used to challenge our vaccine candidates. Fungal challenge evoked robust P10-specific memory CD4+ T cells secreting protective Th-1 cytokines in most groups of immunized mice. Furthermore, the highest level of fungal burden control was achieved when rAdPbT was inoculated in a homologous prime-boost regimen, with 10-fold less CFU recovering than in non-vaccinated mice. Systemic Pb18 spreading was only prevented when rAdPbT was previously inoculated. In summary, we present here VLP/P10 formulations as vaccine candidates against PCM, some of which have demonstrated for the first time their ability to prevent progression of this pernicious fungal disease, which represents a significant social burden in developing countries.
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MESH Headings
- Animals
- Antigens, Fungal/immunology
- CD4-Positive T-Lymphocytes/immunology
- Cytokines/immunology
- Cytokines/metabolism
- Epitopes, T-Lymphocyte/genetics
- Epitopes, T-Lymphocyte/immunology
- Fungal Proteins/immunology
- Fungal Vaccines/administration & dosage
- Fungal Vaccines/immunology
- Glycoproteins/immunology
- Hepatitis B virus/genetics
- Immunization
- Immunodominant Epitopes/immunology
- Immunogenicity, Vaccine
- Immunologic Memory
- Liver/microbiology
- Lung/microbiology
- Mice, Inbred BALB C
- Paracoccidioides/growth & development
- Paracoccidioides/immunology
- Paracoccidioidomycosis/immunology
- Paracoccidioidomycosis/microbiology
- Paracoccidioidomycosis/prevention & control
- Spleen/microbiology
- Th1 Cells/immunology
- Vaccines, Synthetic/administration & dosage
- Vaccines, Synthetic/genetics
- Vaccines, Synthetic/immunology
- Vaccines, Virus-Like Particle/administration & dosage
- Vaccines, Virus-Like Particle/genetics
- Vaccines, Virus-Like Particle/immunology
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Affiliation(s)
- Rodrigo Assunção Holanda
- Departamento de Microbiologia, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
- Laboratório de Biologia Parasitária, Universidade CEUMA, Maranhão, Brazil
- * E-mail:
| | - Julián Esteban Muñoz
- Departamento de Microbiologia, Universidade de São Paulo, São Paulo, Brazil
- Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogotá, Colombia
| | - Lucas Santos Dias
- Departamento de Microbiologia, Universidade de São Paulo, São Paulo, Brazil
| | | | - Julliana Ribeiro Alves Santos
- Departamento de Microbiologia, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
- Laboratório de Microbiologia Ambiental, Universidade CEUMA, Maranhão, Brazil
| | - Sthefany Pagliari
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de Santa Catarina, Santa Catarina, Brazil
| | | | - Tatiane Alves Paixão
- Departamento de Patologia Geral, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
| | | | - Daniel Assis Santos
- Departamento de Microbiologia, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
| | - Oscar Bruña-Romero
- Departamento de Microbiologia, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de Santa Catarina, Santa Catarina, Brazil
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Rossi DCP, Spadari CDC, Nosanchuk JD, Taborda CP, Ishida K. Miltefosine is fungicidal to Paracoccidioides spp. yeast cells but subinhibitory concentrations induce melanisation. Int J Antimicrob Agents 2017; 49:465-471. [DOI: 10.1016/j.ijantimicag.2016.12.020] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 11/02/2016] [Accepted: 12/20/2016] [Indexed: 02/02/2023]
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21
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Nitta CY, Daniel AGT, Taborda CP, Santana AE, Larsson CE. Isolation of Dermatophytes from the Hair Coat of Healthy Persian Cats without Skin Lesions from Commercial Catteries Located in São Paulo Metropolitan Area, Brazil. ACTA SCI VET 2016. [DOI: 10.22456/1679-9216.81298] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Background: The study of the epidemiological chain of dermatophytosis, particularly those related to zoophilic fungi, is extremely important because of its frequent occurrence, the high infectivity of the agent, and its anthropozoonotic character. In all latitudes, asymptomatic cats are considered the main reservoirs and sources of dermatophyte infection. The study aimed to characterize the frequency of dermatophyte infection and the potential risk of microsporic infection to the owners and to possible buyers of apparently healthy Persian cats from commercial catteries of São Paulo, Brazil.Materials, Methods & Results: Fur samples were obtained from 61 clinically healthy Persian cats, which were devoid of typical cutaneous lesions and had negative results in Wood’s lamp examination. The average age of the cats was 37.7 months; 18 (29.5%) of them were males and 43 (70.5%) were females. The cats were from commercial catteries located in the metropolitan region of São Paulo state capital. Samples were obtained using the technique of Mariat & Adam using a square (25 cm2) of sterile carpet rubbed across the surface of the hair-coat and skin. People who had close contact with the animals were asked whether they had had typical ringworm lesions in the recent past or at the time of sample collection. The material collected was pressed onto Petri dishes containing agar supplemented with chloramphenicol and cycloheximide. The Petri dishes were handled under sterile conditions and incubated at 25°C for up to 21 days. There was evident fungal growth in 83.6% of the samples, and the only dermatophyte isolated was Microsporum canis. The results were analyzed using the chi-square test in order to verify possible associations between variables (sex and age range) and the frequency of dermatophyte infection in dermatologically healthy animals. However, there was no statistical difference regarding sexual predisposition (P value = 0.139) and age (P value = 0.224) regarding the asymptomatic dermatophyte carriers. Of the 18 people who had close contact with infected cats, eight (44.4%) claimed to have presented with typical tinea corporis lesions in the past and three (16.7%) said that they had such skin lesions at the time of harvest of the cat fur. There were no people who claimed to have been in contact with other species.Discussion: In Brazil, fungal infections represent up to 8.7% of skin diseases in children, and tinea capitis caused by Microsporum canis is the most common superficial mycosis in this age group. Its interspecies transmission has been reported for decades. Approximately 50% of individuals exposed to symptomatic or asymptomatic cats acquire the disease. In up to 70% of families with infected cats, at least one family member may develop the disease. Among domestic cats, the Persian breed is most often cited as prone to spreading dermatophytes. In the study, there was fungal growth in 83.6% of the samples, and only M. canis was isolated. Among the people who had contact with the cats, 44.4% and 16.7% had typical tinea corporis lesions in the past and at the time of the interview, respectively. However, it is speculated that the rate of infection may have been higher in the humans in contact with these cats, since there may have been some hesitation and fear by the people interviewed in reporting the occurrence of characteristic skin lesions, either as a way of preserving the cattery reputation, or to spare the embarrassment in declaring oneself as infected, which is sometimes viewed negatively. The results demonstrate the potential infectivity, pathogenicity, and risk of microsporic infection in buyers of apparently healthy cats from commercial catteries located in the metropolitan region of São Paulo.
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Parente-Rocha JA, Parente AFA, Baeza LC, Bonfim SMRC, Hernandez O, McEwen JG, Bailão AM, Taborda CP, Borges CL, Soares CMDA. Macrophage Interaction with Paracoccidioides brasiliensis Yeast Cells Modulates Fungal Metabolism and Generates a Response to Oxidative Stress. PLoS One 2015; 10:e0137619. [PMID: 26360774 PMCID: PMC4567264 DOI: 10.1371/journal.pone.0137619] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 08/20/2015] [Indexed: 02/06/2023] Open
Abstract
Macrophages are key players during Paracoccidioides brasiliensis infection. However, the relative contribution of the fungal response to counteracting macrophage activity remains poorly understood. In this work, we evaluated the P. brasiliensis proteomic response to macrophage internalization. A total of 308 differentially expressed proteins were detected in P. brasiliensis during infection. The positively regulated proteins included those involved in alternative carbon metabolism, such as enzymes involved in gluconeogenesis, beta-oxidation of fatty acids and amino acids catabolism. The down-regulated proteins during P. brasiliensis internalization in macrophages included those related to glycolysis and protein synthesis. Proteins involved in the oxidative stress response in P. brasiliensis yeast cells were also up-regulated during macrophage infection, including superoxide dismutases (SOD), thioredoxins (THX) and cytochrome c peroxidase (CCP). Antisense knockdown mutants evaluated the importance of CCP during macrophage infection. The results suggested that CCP is involved in a complex system of protection against oxidative stress and that gene silencing of this component of the antioxidant system diminished the survival of P. brasiliensis in macrophages and in a murine model of infection.
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Affiliation(s)
- Juliana Alves Parente-Rocha
- Laboratório de Biologia Molecular, Instituto de Ciências Biológicas, Universidade Federal de Goiás, Goiânia, Goiás, Brazil
| | - Ana Flávia Alves Parente
- Laboratório de Biologia Molecular, Instituto de Ciências Biológicas, Universidade Federal de Goiás, Goiânia, Goiás, Brazil
- Departamento de Ciências Fisiológicas, Universidade Federal do Amazonas, Manaus, Amazonas, Brazil
| | - Lilian Cristiane Baeza
- Laboratório de Biologia Molecular, Instituto de Ciências Biológicas, Universidade Federal de Goiás, Goiânia, Goiás, Brazil
| | | | - Orville Hernandez
- Unidad de Biología Celular y Molecular, Corporación para Investigaciones Biológicas (CIB), Medellín, Colombia
- Grupo de Investigación MICROBA, Escuela de Microbiología, Universidad de Antioquia, Medellín, Colombia
| | - Juan G. McEwen
- Unidad de Biología Celular y Molecular, Corporación para Investigaciones Biológicas (CIB), Medellín, Colombia
- Facultad de Medicina, Universidad de Antioquia, Medellín, Colombia
| | - Alexandre Melo Bailão
- Laboratório de Biologia Molecular, Instituto de Ciências Biológicas, Universidade Federal de Goiás, Goiânia, Goiás, Brazil
| | - Carlos Pelleschi Taborda
- Instituto de Ciências Biomédicas, Departamento de Microbiologia, Laboratório de Micologia, Universidade de São Paulo, São Paulo, Brazil
| | - Clayton Luiz Borges
- Laboratório de Biologia Molecular, Instituto de Ciências Biológicas, Universidade Federal de Goiás, Goiânia, Goiás, Brazil
| | - Célia Maria de Almeida Soares
- Laboratório de Biologia Molecular, Instituto de Ciências Biológicas, Universidade Federal de Goiás, Goiânia, Goiás, Brazil
- * E-mail:
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Tobouti PL, Mussi MCM, Rossi DCP, Pigatti FM, Taborda CP, de Assis Taveira LA, de Sousa SCOM. Influence of melaleuca and copaiba oils on Candida albicans adhesion. Gerodontology 2014; 33:380-5. [PMID: 25439584 DOI: 10.1111/ger.12172] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/23/2014] [Indexed: 12/01/2022]
Abstract
OBJECTIVE To evaluate the efficacy of Melaleuca alternifolia and Copaifera officinalis in inhibiting the adhesion of Candida albicans biofilm. BACKGROUND Over 65% of denture wearers suffer from denture stomatitis, which is one of the most prevalent forms of oral candidiasis. This disease is characterised by the inflammation of the oral mucosa in contact with the contaminated denture. The contaminated denture contributes to the switch of C. albicans from yeast to its pathogenic hyphal form. Candida albicans adheres and colonises the polymethylmethacrylate resin surfaces and thus contributes to the development of denture stomatitis. MATERIALS AND METHODS The minimal inhibitory concentration (MIC) of M. alternifolia and Co. officinalis was assessed by the agar dilution method. Sixty-six thermopolymerised acrylic resin squares were used and treated with phosphate-buffered saline, sodium hypochlorite 1%, melaleuca 0.75%, melaleuca 0.375%, melaleuca 0.188% and copaiba 10%. For adherence and biofilm formation, the treated squares were placed in six-well tissue culture plates containing 1 × 10(7) cells/ml of ATCC1023 or SC5314 in Roswell Park Memorial Institute (RPMI) medium, and after 12 h, the planktonic cells were counted. RESULTS Copaiba oil did not inhibit C. albicans growth. However, melaleuca oil showed an MIC value of 0.375% (3.4 mg/ml) for ATCC10231 and 0.093% (0.84 mg/ml) for SC5314. CONCLUSIONS Our results demonstrated that M. alternifolia oil inhibited the growth of C. albicans. Moreover, both oils promoted significant adhesion reduction in the tested strains. These findings suggest the possibility of using these oils in prophylaxes against candidiasis.
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Affiliation(s)
- Priscila Lie Tobouti
- Department of Oral Pathology, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | | | - Diego Conrado Pereira Rossi
- Department of Microbiology, Immunology and Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | | | - Carlos Pelleschi Taborda
- Department of Microbiology, Immunology and Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
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24
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Borges TS, Rossi CN, Fedullo JDL, Taborda CP, Larsson CE. Isolation of Sporothrix schenckii from the claws of domestic cats (indoor and outdoor) and in captivity in São Paulo (Brazil). Mycopathologia 2013; 176:129-37. [PMID: 23729233 DOI: 10.1007/s11046-013-9658-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Accepted: 04/13/2013] [Indexed: 11/29/2022]
Abstract
Sporotrichosis is a subcutaneous mycosis and is also a zoonosis (sapro- and anthropozoonosis). The objective of the present study was to determine the occurrence of sporotrichosis in domestic cats and in wild or exotic felines in captivity through the isolation of Sporothrix spp. from claw impressions in a culture medium. The samples included 132 felines, of which 120 (91.0 %) were domestic cats, 11 (8.3 %) were wild felines, and one (0.7 %) was an exotic felid. Twenty-one (17.5 %) were outdoor cats. Of the total, 89 (67.4 %) had contact with other animals of the same species. It was possible to isolate Sporothrix schenckii from the claws of one (0.7 %) of the felids probed; this animal exhibited generalised sporotrichosis and had infected a female veterinarian. The potential pathogenic agents Microsporum canis and Malassezia pachydermatis were isolated in 12.1 and 5.3 % of the animals, respectively. The following anemophilous fungi, which were considered to be contaminants, were also isolated: Penicillium sp. (28 or 21.2 %), Aspergillus sp. (13 or 9.8 %), Rhodotorula sp. (5 or 3.8 %), Candida sp. (5 or 3.8 %), Trichoderma sp. (1 or 0.7 %), and Acremonium sp. (1 or 0.7 %). Due to the low magnitude of occurrence (0.7 %) of Sporothrix in feline claws, the potential of the cats evaluated in this study to be sources of infection in the city of São Paulo is considerably low.
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Affiliation(s)
- Tatiana Saleme Borges
- Department of Internal Medicine, School of Veterinary Medicine and Animal Science, University of São Paulo, Av. Prof. Dr. Orlando Marques de Paiva, 87, Butantã, São Paulo (SP), 05508-270, Brazil.
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25
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Abstract
Paracoccidioidomycosis (PCM) is an endemic Latin American mycosis caused by Paracoccidioides brasiliensis and also by the recently described P. lutzii. The systemic mycosis is the 10th leading cause of death due to infectious diseases in Brazil. As published, 1,853 patients died of PCM in the 1996–2006 decade in this country. The main diagnostic antigen of P.brasiliensis is the 43 kDa glycoprotein gp43, and its 15-mer peptide QTLIAIHTLAIRYAN, known as P10, contains the T-CD4+ epitope that elicits an IFN-γ-mediated Th1 immune response, which effectively treats mice intratracheally infected with PCM. The association of peptide P10 with antifungal drugs rendered an additive protective effect, even in immunosuppressed animals, being the basis of a recommended treatment protocol. Other immunotherapeutic tools include a peptide carrying a B cell epitope as well as protective anti-gp43 monoclonal antibodies. New delivery systems and gene therapy have been studied in prophylactic and therapeutic protocols to improve the efficacy of the recognized antigens aiming at a future vaccine as co-adjuvant therapy in patients with PCM.
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Affiliation(s)
- Luiz R Travassos
- Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo, são Paulo, Brazil
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26
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Thomaz L, Apitz-Castro R, Marques AF, Travassos LR, Taborda CP. Experimental paracoccidioidomycosis: alternative therapy with ajoene, compound from Allium sativum, associated with sulfamethoxazole/trimethoprim. Med Mycol 2008; 46:113-8. [PMID: 18324489 DOI: 10.1080/13693780701651681] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
Ajoene has been described as an antithrombotic, anti-tumour, antifungal, antiparasitic and antibacterial agent. This study deals with the efficacy of ajoene to treat mice intratracheally infected with Paracoccidioides brasiliensis. The results indicate that ajoene therapy is effective in association with antifungal drugs (sulfametoxazol/trimethoprim), showing a positive additive effect. Ajoene-treated mice developed Th1-type cytokine responses producing higher levels of IFN-gamma and IL-12 when compared to the infected but untreated members of the control group. Antifungal activity of ajoene involves a direct effect on fungi and a protective pro-inflammatory immune response. Reduction of fungal load is additive to chemotherapy and therefore the combined treatment is mostly effective against experimental paracoccidioidomycosis.
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Affiliation(s)
- L Thomaz
- Institute of Biomedical Sciences, Department of Microbiology, University of São Paulo, SP, Brazil
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27
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Pinto MR, Barreto-Bergter E, Taborda CP. Glycoconjugates and polysaccharides of fungal cell wall and activation of immune system. Braz J Microbiol 2008; 39:195-208. [PMID: 24031202 PMCID: PMC3768395 DOI: 10.1590/s1517-83822008000200001] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2007] [Accepted: 02/24/2008] [Indexed: 11/21/2022] Open
Abstract
Glycoproteins, glycosphingolipids and polysaccharides exposed at the most external layers of the wall are involved in several types of interactions of fungal cells with the exocellular environment. These molecules are fundamental building blocks of organisms, contributing to the structure, integrity, cell growth, differentiation and signaling. Several of them are immunologically active compounds with potential as regulators of pathogenesis and the immune response of the host. Some of these structures can be specifically recognized by antibodies from patients’ sera, suggesting that they can be also useful in the diagnosis of fungal infections.
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Affiliation(s)
- M R Pinto
- Instituto de Ciências Biomédicas, Departamento de Microbiologia, Universidade de São Paulo , São Paulo, SP , Brasil
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28
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Marques AF, da Silva MB, Juliano MAP, Travassos LR, Taborda CP. Peptide immunization as an adjuvant to chemotherapy in mice challenged intratracheally with virulent yeast cells of Paracoccidioides brasiliensis. Antimicrob Agents Chemother 2006; 50:2814-9. [PMID: 16870776 PMCID: PMC1538653 DOI: 10.1128/aac.00220-06] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.1] [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: 11/20/2022] Open
Abstract
Immunization with peptide P10, derived from gp43, and chemotherapy were used together in an attempt to improve treatment of paracoccidioidomycosis and prevent relapses. The combined treatment showed an additive protective effect when administered at 48 h or 30 days after intratracheal challenge. Its use is recommended to improve regular chemotherapy and reduce the duration of treatment.
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Affiliation(s)
- A F Marques
- Institute of Biomedical Sciences, Department of Microbiology, University of São Paulo, Brazil
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29
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Taborda CP, Nakaie CR, Cilli EM, Rodrigues EG, Silva LS, Franco MF, Travassos LR. Synthesis and immunological activity of a branched peptide carrying the T-cell epitope of gp43, the major exocellular antigen of Paracoccidioides brasiliensis. Scand J Immunol 2004; 59:58-65. [PMID: 14723622 DOI: 10.1111/j.0300-9475.2004.01359.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The 43 kDa glycoprotein (gp43) of Paracoccidioides brasiliensis is the major diagnostic antigen of paracoccidioidomycosis (PCM), a prevalent fungal infection in South America. A 15-mer sequence from gp43, denominated P10, induced T-CD4+ T helper 1 cellular immune responses in mice of three different haplotypes and protected against intratracheal challenge by a virulent isolate of P. brasiliensis. In an attempt to improve delivery of P10, a promiscuous antigen also presented by human leucocyte antigen-DR alleles, aiming at immunotherapy, we synthesized a multiple antigen peptide with the protective T-cell epitope expressed in a tetravalent 13-mer analog of P10 (M10). M10 induced specific lymph node cell proliferation in mice preimmunized with peptides in complete Freund's adjuvant (CFA). In addition, M10 immunization without CFA significantly protected intratracheally infected mice. We conclude that M10 is a candidate for an anti-PCM vaccine. In this report we describe: (1) the synthesis of M10; (2) the induction of M10-elicited T-cell response and (3) in vivo protection of mice immunized with M10 and challenged by a virulent strain of P. brasiliensis.
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Affiliation(s)
- C P Taborda
- Department of Microbiology, University of São Paulo, SP, Brazil
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30
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Fries BC, Taborda CP, Serfass E, Casadevall A. Phenotypic switching of Cryptococcus neoformans occurs in vivo and influences the outcome of infection. J Clin Invest 2001; 108:1639-48. [PMID: 11733559 PMCID: PMC200988 DOI: 10.1172/jci13407] [Citation(s) in RCA: 87] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Phenotypic switching has been linked to the virulence of many pathogens, including fungi. However, it has not been conclusively shown to occur in vivo or to influence the outcome of infection. Cryptococcus neoformans undergoes phenotypic switching in vitro to colony types that differ in their virulence in mice. In this study, we asked whether C. neoformans undergoes phenotypic switching in vivo and whether this phenomenon contributes to virulence. By using a small inoculum to preclude the introduction of variants that had already switched during in vitro propagation, we demonstrated that in vivo switching to a mucoid phenotype occurred in two mice strains and was associated with a lethal outcome. Phenotypic switching resulted in changes of the capsular polysaccharide that inhibited phagocytosis by alveolar macrophages. This promoted a more vigorous inflammatory response and rapid demise. These data document in vivo switching in a fungus and associate this phenomenon with enhanced virulence and a lethal outcome. The importance of this finding is underscored by the increased likelihood of phenotypic switching in chronic cryptococcosis; thus this mechanism may account for the inability to eradicate the organism in immunocompromised hosts.
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Affiliation(s)
- B C Fries
- Department of Medicine, Albert Einstein College of Medicine, Bronx, New York 10461, USA.
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31
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Taborda CP, Casadevall A. Immunoglobulin M efficacy against Cryptococcus neoformans: mechanism, dose dependence, and prozone-like effects in passive protection experiments. J Immunol 2001; 166:2100-7. [PMID: 11160261 DOI: 10.4049/jimmunol.166.3.2100] [Citation(s) in RCA: 80] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The IgM mAbs 12A1 and 13F1 are protective and nonprotective, respectively, against lethal Cryptococcus neoformans infection in mice. To better understand the variables that contribute to IgM efficacy against C. neoformans, we studied the effects of inoculum size, route of infection, and Ab dose for each of these mAbs. mAb 13F1 did not prolong survival under any condition studied. mAb 12A1 prolonged survival after the administration of certain Ab doses after i.p. infection with defined inocula and promoted phagocytosis, agglutination, and the formation of inflammatory cell rings around yeast cells in vivo. Large Ab doses of mAb 12A1 resulted in either no protection or enhanced infection, consistent with a prozone-like effect. Investigation of this phenomenon revealed that the fungal cell was protected against microbicidal nitrogen-derived oxidants when large amounts of Ab were bound to the C. neoformans capsule. mAb 12A1 was opsonic in vitro for peritoneal, but not splenic or alveolar macrophages. In summary, our results indicate that IgM efficacy against C. neoformans is a function of the route of infection, inoculum, and Ab dose and is associated with its ability to promote opsonization, agglutination, and phagocytic ring formation in vivo. The occurrence of the prozone-like phenomenon implies that high Ab titers are not necessarily beneficial in assuring protection against certain pathogens and that caution should be exercised in using high Ab titer as a measure for vaccine efficacy.
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MESH Headings
- Animals
- Antibodies, Monoclonal/administration & dosage
- Antibodies, Monoclonal/metabolism
- Antibodies, Monoclonal/pharmacology
- Antibodies, Monoclonal/therapeutic use
- Antibody Specificity
- Antigen-Antibody Reactions
- Antigens, Fungal/blood
- Binding Sites, Antibody
- Cell Line
- Complement System Proteins/analysis
- Cryptococcosis/immunology
- Cryptococcosis/mortality
- Cryptococcosis/prevention & control
- Cryptococcus neoformans/drug effects
- Cryptococcus neoformans/immunology
- Cryptococcus neoformans/metabolism
- Dose-Response Relationship, Immunologic
- Immunization, Passive/methods
- Immunoglobulin M/administration & dosage
- Immunoglobulin M/metabolism
- Immunoglobulin M/pharmacology
- Immunoglobulin M/therapeutic use
- Injections, Intraperitoneal
- Male
- Mice
- Mice, Inbred A
- Mice, Inbred BALB C
- Mice, Inbred C57BL
- Nitrogen/metabolism
- Nitrogen/toxicity
- Organ Specificity/immunology
- Oxidants/metabolism
- Oxidants/toxicity
- Phagocytosis/immunology
- Polysaccharides/blood
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Affiliation(s)
- C P Taborda
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY 10461, USA
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Abstract
A PCR assay based on oligonucleotide primers derived from the sequence of the gene coding for the 43,000-Da (gp43) antigen was developed to detect Paracoccidioides brasiliensis DNA in sputa. In the standardized conditions, it could detect 10 cells/ml of sputum, providing sufficient accuracy to be useful for diagnosis of paracoccidioidomycosis.
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Affiliation(s)
- G M Gomes
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil
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Sabino EC, Zrein M, Taborda CP, Otani MM, Ribeiro-Dos-Santos G, Sáez-Alquézar A. Evaluation of the INNO-LIA HTLV I/II assay for confirmation of human T-cell leukemia virus-reactive sera in blood bank donations. J Clin Microbiol 1999; 37:1324-8. [PMID: 10203479 PMCID: PMC84764 DOI: 10.1128/jcm.37.5.1324-1328.1999] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.2] [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: 11/20/2022] Open
Abstract
We have evaluated a new serological confirmatory test (INNO-LIA HTLV I/II Ab [INNO-LIA]) for human T-cell leukemia virus (HTLV) using a large collection of samples from Brazilian blood donors (São Paulo region) and compared the results with those obtained by Western blotting (WB) tests (WB2.3 and WB2.4). Blood donations were initially screened by enzyme-linked immunosorbent assays (ELISAs) based on viral lysates, and repeatedly reactive samples were further tested by WB2.3. When available, samples were also tested by PCR, two additional ELISAs based on recombinant antigens (recombinant ELISAs), a new-generation WB assay (WB2.4), and the INNO-LIA. Of the 18,169 samples tested, 292 (1.61%) were repeatedly reactive in the ELISAs (viral lysate based) and were further tested by WB2.3; 97 were positive (19 that were typed as HTLV type I [HTLV-I], 12 that were typed as HTLV type II [HTLV-II], and 66 that were nontypeable), 17 were negative, and 178 had indeterminate results. Of the samples with indeterminate results, 172 were tested by INNO-LIA, which could resolve 153 samples as negative. Regarding the positive samples, WB2. 3 and INNO-LIA produced concordant results for all HTLV-I-positive samples, whereas for HTLV-II they agreed for 10 of 12 samples; the 2 samples with discordant results were considered to be positive for HTLV-II by WB with WB2.3 but negative for HTLV-II by INNO-LIA and the two recombinant ELISAs. Furthermore, of the 66 nontypeable samples, 60 underwent testing by INNO-LIA; 54 turned out to be negative by the latter test as well as by recombinant ELISAs. In conclusion, the new serological confirmatory assay for HTLV (INNO-LIA HTLV I/II Ab) resolved the results for the majority of the indeterminate and positive-untypeable samples frequently observed by WB assays.
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Taborda CP, Juliano MA, Puccia R, Franco M, Travassos LR. Mapping of the T-cell epitope in the major 43-kilodalton glycoprotein of Paracoccidioides brasiliensis which induces a Th-1 response protective against fungal infection in BALB/c mice. Infect Immun 1998; 66:786-93. [PMID: 9453642 PMCID: PMC107971 DOI: 10.1128/iai.66.2.786-793.1998] [Citation(s) in RCA: 130] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The 43-kDa glycoprotein of Paracoccidioides brasiliensis is the major diagnostic antigen of paracoccidioidomycosis, the prevalent systemic mycosis of Latin America. Apart from eliciting high antibody titers, gp43 is also immunodominant in delayed-type hypersensitivity reactions in infected animals and humans. The cellular immune response in mice to gp43 administered in complete Freund's adjuvant involves CD4+ Th-1 lymphocytes, secreting gamma interferon (IFN-gamma) and interleukin 2 (IL-2) but not IL-4 and IL-10. The T-cell epitope of this antigen was mapped to a 15-amino-acid peptide (P10) based on lymphoproliferations with primed cells from three different haplotypes and on a computer-assisted protein analysis. The structural requirements of the T-cell epitope were determined by assaying a series of P10 analogous and truncated peptides. Only 12-mer or longer sequences were active, confirming presentation by major histocompatibility complex II. The HTLAIR inner core of P10 is the essential domain of the epitope, with various flanking regions possible. Immunization of mice with both gp43 and P10 led to vigorous protection against intratracheal challenge by virulent P. brasiliensis, with a >200-fold decrease in lung CFU and halting of dissemination to the spleen and liver. The protective effect of P10 is mainly attributed to an IFN-gamma-mediated cellular immune response. Unlike gp43, which induces an antibody response compatible with both Th-1 and Th-2 activation in infected BALB/c mice, P10 does not induce a humoral response. Protection by gp43 and P10 was characterized by a few well-demarcated lung granulomas with numerous nonviable yeast forms or resolved lesions with no detectable fungal cells.
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Affiliation(s)
- C P Taborda
- Department of Microbiology, Immunology, and Parasitology, Federal University of São Paulo, Brazil
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Camargo ZP, Gesztesi JL, Saraiva EC, Taborda CP, Vicentini AP, Lopes JD. Monoclonal antibody capture enzyme immunoassay for detection of Paracoccidioides brasiliensis antibodies in paracoccidioidomycosis. J Clin Microbiol 1994; 32:2377-81. [PMID: 7814469 PMCID: PMC264069 DOI: 10.1128/jcm.32.10.2377-2381.1994] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.2] [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: 01/27/2023] Open
Abstract
Four murine monoclonal antibodies (MAbs 17C, 21A, 21F, and 32B) raised against the 43-kDa glycoprotein of Paracoccidioides brasiliensis were tested in a capture enzyme immunoassay (EIA) for the detection of specific human anti-gp43 immunoglobulin G in patients with paracoccidioidomycosis (PCM). All MAbs reacted similarly in the assay. These MAbs, which detected anti-gp43 at levels of as low as 500 pg/ml, were demonstrated to specifically recognize at least two different epitopes in gp43 binding assays. Specific antibodies in the sera of patients with active PCM were detected at dilutions of as high as 1:819,200, and the reactivities of patient sera, as measured by optical densities, were found to be significantly higher than those of control sera. The comparison between classical ELISA and our capture enzyme immunoassay showed that both sensitivity and specificity were greatly improved by the latter. These MAbs represent the first specific reagents to P. brasiliensis described for use in serological tests for PCM.
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Affiliation(s)
- Z P Camargo
- Disciplina de Biologia Celular, Escola Paulista de Medicina, Brasil
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Taborda CP, Camargo ZP. Diagnosis of paracoccidioidomycosis by dot immunobinding assay for antibody detection using the purified and specific antigen gp43. J Clin Microbiol 1994; 32:554-6. [PMID: 8150974 PMCID: PMC263076 DOI: 10.1128/jcm.32.2.554-556.1994] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
The dot immunobinding assay, a rapid, visually read test, was adapted for serodiagnosis and follow-up of paracoccidioidomycosis (PCM). Purified gp43 antigen was tested before and after sodium metaperiodate treatment. To evaluate the assay, it was tested with sera from PCM, histoplasmosis, Jorge Lobo's disease, aspergillosis, candidiasis, and cryptococcosis patients and healthy subjects. Native gp43 gave positive results with all sera from PCM patients and weakly positive results with sera from Jorge Lobo's disease patients (31.3%). No false-positive results were obtained when periodate-treated gp43 was used as the antigen. These results indicate that the dot immunobinding test is sensitive, specific, economical, and fast for serodiagnosis and follow-up studies of PCM.
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Affiliation(s)
- C P Taborda
- Escola Paulista de Medicina, Disciplina de Biologia Celular, São Paulo, Brazil
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Taborda CP, Camargo ZP. Diagnosis of paracoccidioidomycosis by passive haemagglutination assay of antibody using a purified and specific antigen-gp43. J Med Vet Mycol 1993; 31:155-60. [PMID: 8509952 DOI: 10.1080/02681219380000171] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Sheep red blood cells, treated with glutaraldehyde and sensitized with a purified Paracoccidioides brasiliensis antigen of molecular mass 43 kDa (gp43), were used to detect antibodies to P. brasiliensis by passive haemagglutination (PHA). Sera from 50 patients with paracoccidioidomycosis had PHA titres of > 1/800, and had antibodies detectable by immunodiffusion while antibodies to gp43 were detectable by PHA in sera from patients with histoplasmosis, aspergillosis, candidiasis, Jorge Lobo's disease or healthy people, only at titres of < 1/100. Considering a cut-off at 1/200, the sensitivity and specificity of PHA for paracoccidioidomycosis was 100%. Thus, the PHA test could be an efficacious method for routine serological diagnosis of paracoccidioidomycosis, with results in 1 to 2 h.
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Affiliation(s)
- C P Taborda
- Disciplina de Biologia Cellular, Escola Paulista de Medicina, São Paulo, Brazil
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