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Ruas LP, Pereira RM, Braga FG, Lima XT, Mamoni RL, Cintra ML, Schreiber AZ, Calich VLG, Blotta MHSL. Severe Paracoccidioidomycosis in a 14-Year-Old Boy. Mycopathologia 2016; 181:915-920. [PMID: 27364896 DOI: 10.1007/s11046-016-0035-2] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 06/23/2016] [Indexed: 10/21/2022]
Abstract
Paracoccidioidomycosis (PCM) is the most important systemic mycoses in Latin America. We describe a severe case of paracoccidioidomycosis in a 14-year-old boy, with a rapid disease progression. The fungal strain was isolated and inoculated into a T and/or B cell immunocompromised mice, which revealed a highly virulent strain. The case report presented herein emphasizes the importance of considering PCM in the differential diagnosis of patients with other infectious diseases in endemic areas and highlights a novel isolate.
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Affiliation(s)
- L P Ruas
- Department of Clinical Pathology, School of Medical Sciences, State University of Campinas (UNICAMP), Rua Tessalia Vieira de Camargo, 126, Campinas, São Paulo, 13083-878, Brazil
| | - R M Pereira
- Department of Pediatrics, School of Medical Sciences, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - F G Braga
- Department of Clinical Pathology, School of Medical Sciences, State University of Campinas (UNICAMP), Rua Tessalia Vieira de Camargo, 126, Campinas, São Paulo, 13083-878, Brazil
| | - X T Lima
- Department of Clinical Pathology, School of Medical Sciences, State University of Campinas (UNICAMP), Rua Tessalia Vieira de Camargo, 126, Campinas, São Paulo, 13083-878, Brazil.,School of Medicine, University of Fortaleza (UNIFOR), Fortaleza, Ceará, Brazil
| | - R L Mamoni
- Department of Clinical Pathology, School of Medical Sciences, State University of Campinas (UNICAMP), Rua Tessalia Vieira de Camargo, 126, Campinas, São Paulo, 13083-878, Brazil
| | - M L Cintra
- Department of Pathology, School of Medical Sciences, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - A Z Schreiber
- Department of Clinical Pathology, School of Medical Sciences, State University of Campinas (UNICAMP), Rua Tessalia Vieira de Camargo, 126, Campinas, São Paulo, 13083-878, Brazil
| | - V L G Calich
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - M H S L Blotta
- Department of Clinical Pathology, School of Medical Sciences, State University of Campinas (UNICAMP), Rua Tessalia Vieira de Camargo, 126, Campinas, São Paulo, 13083-878, Brazil.
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da Silva JDF, de Oliveira HC, Marcos CM, da Silva RAM, da Costa TA, Calich VLG, Almeida AMF, Mendes-Giannini MJS. Paracoccidoides brasiliensis 30 kDa adhesin: identification as a 14-3-3 protein, cloning and subcellular localization in infection models. PLoS One 2013; 8:e62533. [PMID: 23638109 PMCID: PMC3640054 DOI: 10.1371/journal.pone.0062533] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [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: 10/31/2012] [Accepted: 03/21/2013] [Indexed: 02/04/2023] Open
Abstract
Paracoccidoides brasiliensis adhesion to lung epithelial cells is considered an essential event for the establishment of infection and different proteins participate in this process. One of these proteins is a 30 kDa adhesin, pI 4.9 that was described as a laminin ligand in previous studies, and it was more highly expressed in more virulent P. brasiliensis isolates. This protein may contribute to the virulence of this important fungal pathogen. Using Edman degradation and mass spectrometry analysis, this 30 kDa adhesin was identified as a 14-3-3 protein. These proteins are a conserved group of small acidic proteins involved in a variety of processes in eukaryotic organisms. However, the exact function of these proteins in some processes remains unknown. Thus, the goal of the present study was to characterize the role of this protein during the interaction between the fungus and its host. To achieve this goal, we cloned, expressed the 14-3-3 protein in a heterologous system and determined its subcellular localization in in vitro and in vivo infection models. Immunocytochemical analysis revealed the ubiquitous distribution of this protein in the yeast form of P. brasiliensis, with some concentration in the cytoplasm. Additionally, this 14-3-3 protein was also present in P. brasiliensis cells at the sites of infection in C57BL/6 mice intratracheally infected with P. brasiliensis yeast cells for 72 h (acute infections) and 30 days (chronic infection). An apparent increase in the levels of the 14-3-3 protein in the cell wall of the fungus was also noted during the interaction between P. brasiliensis and A549 cells, suggesting that this protein may be involved in host-parasite interactions, since inhibition assays with the protein and this antibody decreased P. brasiliensis adhesion to A549 epithelial cells. Our data may lead to a better understanding of P. brasiliensis interactions with host tissues and paracoccidioidomycosis pathogenesis.
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Affiliation(s)
- Julhiany de Fatima da Silva
- Department of Clinical Analyses, Faculty of Pharmaceutical Sciences, São Paulo State University - University Estadual Paulista Araraquara, São Paulo, Brazil
| | - Haroldo César de Oliveira
- Department of Clinical Analyses, Faculty of Pharmaceutical Sciences, São Paulo State University - University Estadual Paulista Araraquara, São Paulo, Brazil
| | - Caroline Maria Marcos
- Department of Clinical Analyses, Faculty of Pharmaceutical Sciences, São Paulo State University - University Estadual Paulista Araraquara, São Paulo, Brazil
| | - Rosângela Aparecida Moraes da Silva
- Department of Clinical Analyses, Faculty of Pharmaceutical Sciences, São Paulo State University - University Estadual Paulista Araraquara, São Paulo, Brazil
| | - Tania Alves da Costa
- Department of Immunology, Biomedical Institute, São Paulo University, São Paulo, Brazil
| | | | - Ana Marisa Fusco Almeida
- Department of Clinical Analyses, Faculty of Pharmaceutical Sciences, São Paulo State University - University Estadual Paulista Araraquara, São Paulo, Brazil
| | - Maria José Soares Mendes-Giannini
- Department of Clinical Analyses, Faculty of Pharmaceutical Sciences, São Paulo State University - University Estadual Paulista Araraquara, São Paulo, Brazil
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