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Challenges in Serologic Diagnostics of Neglected Human Systemic Mycoses: An Overview on Characterization of New Targets. Pathogens 2022; 11:pathogens11050569. [PMID: 35631090 PMCID: PMC9143782 DOI: 10.3390/pathogens11050569] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 04/18/2022] [Accepted: 04/21/2022] [Indexed: 12/04/2022] Open
Abstract
Systemic mycoses have been viewed as neglected diseases and they are responsible for deaths and disabilities around the world. Rapid, low-cost, simple, highly-specific and sensitive diagnostic tests are critical components of patient care, disease control and active surveillance. However, the diagnosis of fungal infections represents a great challenge because of the decline in the expertise needed for identifying fungi, and a reduced number of instruments and assays specific to fungal identification. Unfortunately, time of diagnosis is one of the most important risk factors for mortality rates from many of the systemic mycoses. In addition, phenotypic and biochemical identification methods are often time-consuming, which has created an increasing demand for new methods of fungal identification. In this review, we discuss the current context of the diagnosis of the main systemic mycoses and propose alternative approaches for the identification of new targets for fungal pathogens, which can help in the development of new diagnostic tests.
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Cocio TA, Martinez R. Serological diagnosis of paracoccidioidomycosis using a Paracoccidioides spp. comercial antigen and the counterimmunoelectrophoresis method. Braz J Infect Dis 2021; 25:101607. [PMID: 34478682 PMCID: PMC9392199 DOI: 10.1016/j.bjid.2021.101607] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 07/08/2021] [Accepted: 07/29/2021] [Indexed: 11/28/2022] Open
Abstract
Purpose In-house Paracoccidioides spp. antigens are commonly used in the serological diagnosis of paracoccidioidomycosis (PCM). The sensitivity and specificity of a commercial Paracoccidioides spp. antigen was assessed for PCM serological testing. Method Counterimmunoelectrophoresis and double immunodiffusion were used to evaluate the Paracoccidioides ID Antigen® reagent in sera from PCM cases and patients with other diseases. Results All active PCM sera (n=24) were reactive using counterimmunoelectrophoresis (sensitivity = 100%), including 11 cases of infection by P. brasiliensis sensu stricto and one by P. americana. Fifteen (88%) out of 17 sera from patients on treatment or cured were reactive, including one case of P. lutzii infection. One to three bands of antigen-antibody precipitate were observed on the agarose gel, with a predominance of two to three bands in the test with untreated PCM sera or at the beginning of antifungal therapy. All sera from patients with histoplasmosis (n=7), aspergillosis (n=5), and other diseases (n=27) tested negative (specificity = 100%). The overall sensitivity and specificity using the commercial antigen and double diffusion test were 75% and 100%, respectively. Conclusion The commercial antigen performed satisfactorily and may contribute to the dissemination of the use of serological tests for the PCM diagnosis.
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Affiliation(s)
- Tiago Alexandre Cocio
- Universidade de São Paulo, Faculdade de Medicina de Ribeirão Preto, Departamento de Clínica Médica, Ribeirão Preto, SP, Brazil.
| | - Roberto Martinez
- Universidade de São Paulo, Faculdade de Medicina de Ribeirão Preto, Departamento de Clínica Médica, Ribeirão Preto, SP, Brazil.
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Assolini JP, Lenhard-Vidal A, Bredt CSDO, Tano ZN, Sano A, Cezar-Dos-Santos F, Ono MA, Itano EN. Distinct Pattern of Paracoccidioides lutzii, P. restrepiensis and P. americana Antigens Recognized by IgE in Human Paracoccidioidomycosis. Curr Microbiol 2021; 78:2608-2614. [PMID: 33983482 DOI: 10.1007/s00284-021-02508-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 04/25/2021] [Indexed: 11/28/2022]
Abstract
Paracoccidioidomycosis (PCM) is caused by the fungi Paracoccidioides spp. The main antigens recognized by IgE are known for P. brasiliensis species complex, but not for P. lutzii. Current research investigated the major P. lutzii (LDR2) antigens recognized by IgE, in comparison to P. restrepiensis and P. americana (former P. brasiliensis species complex), besides IgG recognition. Cell-free antigens (CFA) from P. lutzii (LDR2), P. restrepiensis (B339) and P. americana (LDR3) were analyzed by ELISA and immunoblotting (IB) by detecting specific IgG and IgE from sera from patients with PCM presumable by P. brasiliensis species complex (n = 24). Additionally, somatic antigen (SA) was analyzed by IB. P. lutzii (LDR2) antigens showed significantly lower reactivity than P. restrepiensis (B339) and P. americana (LDR3) in ELISA for both IgE and IgG (p < 0.05). The IgE-IB pattern was different between P. lutzii (LDR2) and the other species, regarding components with ~30 kDa and ~70 kDa in CFA and a ~200 kDa in SA. P. lutzii (LDR2) present at least three antigens recognized by IgE which mainly differ from P. restrepiensis (B339) and, to a lesser extent, from P. americana (LDR3). Current research evidenced for the first time the major P. lutzii (LDR2) antigens recognized by IgE.
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Affiliation(s)
- João P Assolini
- State University of Londrina, Londrina, PR, Brazil. .,Departamento de Ciências Patológicas, CCB, Universidade Estadual de Londrina, Campus Universitário, Londrina, PR, 86051-970, Brazil.
| | | | | | | | - Ayako Sano
- Department of Animal Sciences, University of the Ryukyus, Okinawa, Japan
| | | | - Mario A Ono
- State University of Londrina, Londrina, PR, Brazil
| | - Eiko N Itano
- State University of Londrina, Londrina, PR, Brazil. .,Departamento de Ciências Patológicas, CCB, Universidade Estadual de Londrina, Campus Universitário, Londrina, PR, 86051-970, Brazil.
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Lenhard-Vidal A, Bender FR, Assolini JP, Maruo AEM, Vieira LT, Pereira EC, Ono MA, Sano A, Itano EN. IgG reactivity profile to Paracoccidioides spp. antigens in people with asymptomatic Paracoccidioidomycosis. J Med Microbiol 2021; 70. [PMID: 33258768 DOI: 10.1099/jmm.0.001279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Introduction. Paracoccidioidomycosis (PCM) is a systemic mycosis caused by Paracoccidioides spp. As the disease is known to affect mostly men over 40 years old who previously worked handling soil, some cities of agricultural economy in endemic regions may have more cases of paracoccidioidal infection.Gap statement. The true frequency of PCM cannot be established in Brazil because it is not a disease of mandatory reporting. The detection of paracoccidioidal infection may assist in the planning of health services, in order to provide early detection of the disease and to prevent its worsening or even progression to death. In addition, little is described about sera reactivity with antigens from different species of Paracoccidiodes, especially P. lutzii.Aim. Current research was conducted in an inland municipality of southern Brazil, in order to assess infection rate within this endemic region of PCM disease.Methodology. ELISA was employed to evaluate 359 sera from random volunteers from Guarapuava, Paraná, Brazil, to detect IgG against cell-free antigens (CFA) from P. restrepiensis B339, P. americana LDR3 and P. lutzii LDR2. Confirmatory ELISA employed gp43 from B339. Reduction of cross-reactions was sought by treatment with sodium metaperiodate (SMP-CFA, SMP-gp43). Immunoblot was performed with 37 selected sera among those reactive in ELISA. Epidemiological profile was assessed by questionnaire.Results. ELISA reactivity was: CFA/SMP-CFA in general 37.3/17.8 %, B339 25.3/14.5 %, LDR3 24.5/1.4 %, LDR2 8.3/5.8 %; gp43/SMP-gp43 7.2/4.7 %. There were sera reactive with multiple CFAs. In immunoblot, five sera showed the same reaction profile with P. lutzii's antigens as PCM disease sera. Rural residence and soil-related professions were risk factors for paracoccidioidal infection.Conclusion. The low prevalence is in accordance with previous reports of lower PCM disease endemicity in Guarapuava than in other areas of Paraná. Although P. brasiliensis seems to be the prevalent strain of the region, 21 sera from people who only lived in Guarapuava reacted with P. lutzii LDR2. CFA-ELISA with whole antigens seems a good option for serological screening in epidemiological surveys.
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Affiliation(s)
- Adriane Lenhard-Vidal
- State University of Londrina, Londrina, Brazil.,University Center Campo Real, Guarapuava, Brazil
| | | | | | | | | | | | | | - Ayako Sano
- Department of Animal Sciences, University of the Ryukyus, Okinawa, Japan
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Mavengere H, Mattox K, Teixeira MM, Sepúlveda VE, Gomez OM, Hernandez O, McEwen J, Matute DR. Paracoccidioides Genomes Reflect High Levels of Species Divergence and Little Interspecific Gene Flow. mBio 2020; 11:e01999-20. [PMID: 33443110 PMCID: PMC8534288 DOI: 10.1128/mbio.01999-20] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 10/27/2020] [Indexed: 12/30/2022] Open
Abstract
The fungus Paracoccidioides is a prevalent human pathogen endemic to South America. The genus is composed of five species. In this report, we use 37 whole-genome sequences to study the allocation of genetic variation in Paracoccidioides We tested three genome-wide predictions of advanced speciation, namely, that all species should be reciprocally monophyletic, that species pairs should be highly differentiated along the whole genome, and that there should be low rates of interspecific gene exchange. We find support for these three hypotheses. Species pairs with older divergences show no evidence of gene exchange, while more recently diverged species pairs show evidence of modest rates of introgression. Our results indicate that as divergence progresses, species boundaries become less porous among Paracoccidioides species. Our results suggest that species in Paracoccidioides are at different stages along the divergence continuum.IMPORTANCEParacoccidioides is the causal agent of a systemic mycosis in Latin America. Most of the inference of the evolutionary history of Paracoccidioides has used only a few molecular markers. In this report, we evaluate the extent of genome divergence among Paracoccidioides species and study the possibility of interspecific gene exchange. We find that all species are highly differentiated. We also find that the amount of gene flow between species is low and in some cases is even completely absent in spite of geographic overlap. Our study constitutes a systematic effort to identify species boundaries in fungal pathogens and to determine the extent of gene exchange among fungal species.
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Affiliation(s)
- Heidi Mavengere
- Biology Department, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Kathleen Mattox
- Biology Department, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Marcus M Teixeira
- Núcleo de Medicina Tropical, Faculdade de Medicina, University of Brasília, Brasília, Brazil
| | - Victoria E Sepúlveda
- Department of Microbiology and Immunology, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Oscar M Gomez
- Cellular and Molecular Biology Unit, Corporación para Investigaciones Biológicas, Medellín, Colombia
| | - Orville Hernandez
- Cellular and Molecular Biology Unit, Corporación para Investigaciones Biológicas, Medellín, Colombia
- MICROBA Research Group, School of Microbiology, Universidad de Antioquia, Medellín, Colombia
| | - Juan McEwen
- Cellular and Molecular Biology Unit, Corporación para Investigaciones Biológicas, Medellín, Colombia
- School of Medicine, Universidad de Antioquia, Medellín, Colombia
| | - Daniel R Matute
- Biology Department, University of North Carolina, Chapel Hill, North Carolina, USA
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Unraveling the susceptibility of paracoccidioidomycosis: Insights towards the pathogen-immune interplay and immunogenetics. INFECTION GENETICS AND EVOLUTION 2020; 86:104586. [PMID: 33039601 DOI: 10.1016/j.meegid.2020.104586] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 09/27/2020] [Accepted: 10/05/2020] [Indexed: 02/07/2023]
Abstract
Paracoccidioidomycosis (PCM) is a life-threatening systemic mycosis caused by Paracoccidioides spp. This disease comprises three clinical forms: symptomatic acute and chronic forms (PCM disease) and PCM infection, a latent form without clinical symptoms. PCM disease differs markedly according to severity, clinical manifestations, and host immune response. Fungal virulence factors and adhesion molecules are determinants for entry, latency, immune escape and invasion, and dissemination in the host. Neutrophils and macrophages play a paramount role in first-line defense against the fungus through the recognition of antigens by pattern recognition receptors (PRRs), activating their microbicidal machinery. Furthermore, the clinical outcome of the PCM is strongly associated with the variability of cytokines and immunoglobulins produced by T and B cells. While the mechanisms that mediate susceptibility or resistance to infection are dictated by the immune system, some genetic factors may alter gene expression and its final products and, hence, modulate how the organism responds to infection and injury. This review outlines the main findings relative to this topic, addressing the complexity of the immune response triggered by Paracoccidioides spp. infection from preclinical investigations to studies in humans. Here, we focus on mechanisms of fungal pathogenesis, the patterns of innate and adaptive immunity, and the genetic and molecular basis related to immune response and susceptibility to the development of the PCM and its clinical forms. Immunogenetic features such as HLA system, cytokines/cytokines receptors genes and other immune-related genes, and miRNAs are likewise discussed. Finally, we point out the occurrence of PCM in patients with primary immunodeficiencies and call attention to the research gaps and challenges faced by the PCM field.
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Coitinho JB, Costa MAF, Melo EM, Morais EA, de Andrade LGA, da Rocha AM, de Magalhães MTQ, Favaro DC, Bleicher L, Pedroso ERP, Goes AM, Nagem RAP. Structural and immunological characterization of a new nucleotidyltransferase-like antigen from Paracoccidioides brasiliensis. Mol Immunol 2019; 112:151-162. [PMID: 31108423 DOI: 10.1016/j.molimm.2019.04.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 04/29/2019] [Accepted: 04/30/2019] [Indexed: 02/06/2023]
Abstract
Pb27 antigen is an interesting alternative to immunological diagnosis of Paracoccidioidomycosis (PCM) and has demonstrated to be protective in experimental PCM. Its tertiary structure and possible function remained unknown till now. To study Pb27 at the atomic level, the recombinant protein was expressed in Escherichia coli BL21(DE3), purified, and its three-dimensional structure was solved by X-ray crystallography. Based on this structure, we performed a residue correlation analysis and in silico ligand search assays to address a possible biological function to Pb27. We identified Pb27 as a member of the extensive nucleotidyltransferase superfamily. The protein has an αβαβαβ topology with two domains (N- and C-terminal domains) and adopts a monomeric form as its biological unit in solution. Structural comparisons with similar members of the superfamily clearly indicate Pb27 C-terminal domain is singular and may play an important role in its biological function. Bioinformatics analysis suggested that Pb27 might bind to ATP and CTP. This suggestion is corroborated by the fact that a magnesium cation is coordinated by two aspartic acid residues present at the active site (between N- and C-terminal domains), as evidenced by X-ray diffraction data. Besides, NMR assays (1H-15N HSQC spectra) confirmed the binding of CTP to Pb27, demonstrating for the first time an interaction between a nucleotide and this protein. Moreover, we evaluated the reactivity of sera from patients with Paracoccidioides brasiliensis infection against the recombinant form of Pb27 and showed that it was recognized by sera from infected and treated patients. Predicted B and T cell epitopes were synthesized and further evaluated against sera of PCM patients, providing information of the most reactive peptides in Pb27 primary structure which interact with specific Pb27 antibodies.
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Affiliation(s)
- Juliana B Coitinho
- Departamento de Ciências Fisiológicas, Centro de Ciências da Saúde, Universidade Federal do Espírito Santo, Vitória, ES 29043-900, Brazil
| | - Mariana A F Costa
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil
| | - Eliza M Melo
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil
| | - Elis A Morais
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil
| | - Lorena G A de Andrade
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil
| | - Aline M da Rocha
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil
| | - Mariana T Q de Magalhães
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil
| | - Denize C Favaro
- Instituto de Química, Universidade Estadual de Campinas, Campinas, SP 13083-970, Brazil
| | - Lucas Bleicher
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil
| | - Enio R P Pedroso
- Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil
| | - Alfredo M Goes
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil; Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil
| | - Ronaldo A P Nagem
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil.
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Lenhard-Vidal A, Assolini JP, Chiyoda FAS, Ono MA, Sano A, Itano EN. Polyclonal antibodies toParacoccidioides brasiliensisare able to recognise antigens from different strains fromParacoccidioidesspecies complex, includingParacoccidioides lutziiLDR2. Mycoses 2018; 61:826-832. [DOI: 10.1111/myc.12819] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 05/29/2018] [Accepted: 06/14/2018] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | | | - Ayako Sano
- Department of Animal Sciences; University of the Ryukyus; Okinawa Japan
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Buccheri R, Morais VDS, Kamikawa CM, Vidal MSM, Naves G, Del Negro GMB, Vicentini AP, Benard G. Case Report: Misleading Serological Diagnosis of Paracoccidioidomycosis in a Young Patient with the Acute Form Disease: Paracoccidioides brasiliensis or Paracoccidioides lutzii? Am J Trop Med Hyg 2018; 98:1082-1085. [PMID: 29405111 DOI: 10.4269/ajtmh.17-0812] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Negative results in serological routine screening of patients with microbiologically proven Paracoccidioidomycosis (PCM) are occasionally reported. Failure in detecting anti-Paracoccidioides antibodies has been ascribed to factors either related to serological techniques or to the status of the host immune reactivity. Recently, this issue has been renewed by the recognition that the Paracoccidioides genera comprises two species, lutzii and brasiliensis, which have distinct antigenic profiles and, therefore, may elicit different host antibody responses. We describe a patient with the acute form PCM due to Paracoccidioides brasiliensis with negative results on two reference centers' routine screening for P. brasiliensis antibodies, but positive results with Paracoccidioides lutzii antigens. The present case report suggests that antibodies elicited during P. brasiliensis infection recognize antigenic fractions shared by both species, highlighting the difficulties in distinguishing the two infections by means of the currently available routine serological assays.
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Affiliation(s)
- Renata Buccheri
- Laboratory of Medical Investigation in Medical Mycology Unit #53, Medical School and Tropical Medicine Institute, University of São Paulo Medical School, São Paulo, Brazil.,Emilio Ribas Institute of Infectious Diseases, São Paulo, Brazil
| | - Vanessa Dos Santos Morais
- Laboratory of Medical Investigation in Medical Mycology Unit #53, Medical School and Tropical Medicine Institute, University of São Paulo Medical School, São Paulo, Brazil
| | | | - Monica Scarpelli Martinelli Vidal
- Laboratory of Medical Investigation in Medical Mycology Unit #53, Medical School and Tropical Medicine Institute, University of São Paulo Medical School, São Paulo, Brazil
| | - Gabriel Naves
- Laboratory of Medical Investigation in Medical Mycology Unit #53, Medical School and Tropical Medicine Institute, University of São Paulo Medical School, São Paulo, Brazil
| | - Gilda Maria Barbaro Del Negro
- Laboratory of Medical Investigation in Medical Mycology Unit #53, Medical School and Tropical Medicine Institute, University of São Paulo Medical School, São Paulo, Brazil
| | | | - Gil Benard
- Laboratory of Medical Investigation in Dermatology and Immunodeficiencies Unit #56, Medical School and Tropical Medicine Institute, University of São Paulo Medical School, São Paulo, Brazil.,Laboratory of Medical Investigation in Medical Mycology Unit #53, Medical School and Tropical Medicine Institute, University of São Paulo Medical School, São Paulo, Brazil
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do Prado Gomes Pedreira R, de Carli ML, Beijo LA, Nonogaki S, Pereira AAC, Junior NVR, Sperandio FF, Hanemann JAC. Oral Paracoccidioidomycosis Granulomas are Predominantly Populated by CD163+ Multinucleated Giant Cells. Mycopathologia 2016; 181:709-16. [PMID: 27236303 DOI: 10.1007/s11046-016-0016-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 05/03/2016] [Indexed: 01/29/2023]
Abstract
Multinucleated giant cells (MGC) are considered to be a hallmark of granulomatous inflammation; thus, they may play an essential role in the host response against pathogens, particularly Paracoccidioides brasiliensis. This study characterizes the MGC found in oral paracoccidioidomycosis and assesses the correlation of MGC with the amount of fungi within oral tissues. Twenty-six cases were included. They were classified as loose or dense granulomas, and the total MGC, including foreign-body and Langhans giant cells, besides the total and intracellular fungi, were taken into consideration. CD163 immunoexpression was performed, and CD163+ multinucleated giant cells were also quantified. Dense granulomas revealed more foreign-body type and total giant cells than loose granulomas (P < 0.05). Total giant cells showed a positive linear correlation with the CD163+ cells (P = 0.003; r = 0.56) and intracellular fungi quantification (P = 0.045; r = 0.40). Oral paracoccidioidomycosis lesions contain MGC that mainly belong to a CD163+ phenotype, also showing both Langhans and foreign-body arrangements. Additionally, the higher the presence of MGC, the higher the amount of phagocytized fungi.
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Affiliation(s)
- Renato do Prado Gomes Pedreira
- Department of Clinic and Surgery, School of Dentistry, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 700, Alfenas, MG, 37130-000, Brazil
| | - Marina Lara de Carli
- Department of Clinic and Surgery, School of Dentistry, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 700, Alfenas, MG, 37130-000, Brazil
| | - Luiz Alberto Beijo
- Institute of Exact Sciences, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 700, Alfenas, MG, 37130-000, Brazil
| | - Suely Nonogaki
- Pathology Center, Adolfo Lutz Institute, Av. Dr. Arnaldo, 355 Cerqueira César, São Paulo, SP, 01246-902, Brazil
| | - Alessandro Antônio Costa Pereira
- Department of Pathology and Parasitology, Institute of Biomedical Sciences, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 700, Alfenas, MG, 37130-000, Brazil
| | - Noé Vital Ribeiro Junior
- Department of Clinic and Surgery, School of Dentistry, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 700, Alfenas, MG, 37130-000, Brazil
| | - Felipe Fornias Sperandio
- Department of Pathology and Parasitology, Institute of Biomedical Sciences, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 700, Alfenas, MG, 37130-000, Brazil
| | - João Adolfo Costa Hanemann
- Department of Clinic and Surgery, School of Dentistry, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 700, Alfenas, MG, 37130-000, Brazil.
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de Macedo PM, Almeida-Paes R, de Medeiros Muniz M, Oliveira MME, Zancopé-Oliveira RM, Costa RLB, do Valle ACF. Paracoccidioides brasiliensis PS2: First Autochthonous Paracoccidioidomycosis Case Report in Rio de Janeiro, Brazil, and Literature Review. Mycopathologia 2016; 181:701-8. [PMID: 27161127 DOI: 10.1007/s11046-016-0015-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 04/25/2016] [Indexed: 01/10/2023]
Abstract
Paracoccidioidomycosis (PCM) is a systemic mycosis caused by pathogenic dimorphic fungi of the Paracoccidioides brasiliensis complex. It is the most important systemic mycosis in Latin America, mainly in Brazil. Despite its severity and high mortality rates, it is considered a neglected disease. Species within the genus Paracoccidioides present genetics and morphological variations with probable clinical, diagnostic and therapeutic consequences. In fact, there are a very small number of detailed case reports with molecular identification of these fungal agents. Here, it is reported a case of PCM due to Paracoccidioides brasiliensis PS2. Molecular identification of the isolate was performed by amplification and sequencing of the arf and gp43 genes. Clinical cases and strain reports with molecular identification in the literature are also reviewed. The case herein presented is the first autochthonous report of PCM due to Paracoccidioides brasiliensis PS2 species in the state of Rio de Janeiro, Brazil, an important endemic area. The patient presented a chronic pulmonary form of PCM and had a satisfactory response to sulfamethoxazole/trimethoprim although sequelae such as adrenal insufficiency and dysphonia were observed. This study may contribute to improve the knowledge about this severe disease, its causative cryptic species and their consequences to patients.
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Affiliation(s)
- Priscila Marques de Macedo
- Laboratório de Pesquisa Clínica em Dermatologia Infecciosa, Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Avenida Brasil, 4365, Manguinhos, Rio de Janeiro, RJ, 21045-900, Brazil.
| | - Rodrigo Almeida-Paes
- Laboratório de Micologia, Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Mauro de Medeiros Muniz
- Laboratório de Micologia, Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | | | - Rosely Maria Zancopé-Oliveira
- Laboratório de Micologia, Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Regina Lana Braga Costa
- Coordenação de Pesquisa, Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Antonio Carlos Francesconi do Valle
- Laboratório de Pesquisa Clínica em Dermatologia Infecciosa, Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Avenida Brasil, 4365, Manguinhos, Rio de Janeiro, RJ, 21045-900, Brazil
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Siqueira IM, Fraga CLF, Amaral AC, Souza ACO, Jerônimo MS, Correa JR, Magalhães KG, Inácio CA, Ribeiro AM, Burguel PH, Felipe MS, Tavares AH, Bocca AL. Distinct patterns of yeast cell morphology and host responses induced by representative strains of Paracoccidioides brasiliensis (Pb18) and Paracoccidioides lutzii (Pb01). Med Mycol 2015; 54:177-88. [PMID: 26384386 DOI: 10.1093/mmy/myv072] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 07/07/2015] [Indexed: 11/14/2022] Open
Abstract
Paracoccidioidomycosis (PCM) is a systemic mycosis, widespread in Latin America. PCM is a granulomatous disease characterized by a polymorphism of lesions depending on the pathogen's virulence, the immune status of the host and its genetic susceptibility. The thermodimorphic fungus Paracoccidioides brasiliensis was considered the only etiologic agent of PCM, yet recent works have shown significant genetic diversity among different strains of P. brasiliensis. Therefore, it has been proposed for a new species within the Paracoccidioides genus, named Paracoccidioides lutzii. To better understand the fungus-host interactions elicited by strains Pb01 and Pb18 as key representatives of P. lutzii and P. brasiliensis, respectively, we carried out studies to investigate differences in morphology, induced immune response, virulence and pathology between these two Paracoccidioides species. Our results demonstrate distinct patterns of host-parasite interaction and pathology caused by Pb18 and Pb01. These results open up new fronts for NEW: clinical studies, which may result in significant consequences for the diagnosis and treatment of PCM. Considering that our results cannot be extended to all strains of both species, more studies about the virulence among Paracoccioides must be explored in the future.
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Affiliation(s)
- Isaque Medeiros Siqueira
- Molecular Pathology Post-Graduate Program, Faculty of Medicine, University of Brasília, D.F., Brazil
| | | | - André Correa Amaral
- Biotechnology, Institute of Tropical Pathology and Public Health, Federal University of Goiás
| | - Ana Camila Oliveira Souza
- Molecular Pathology Post-Graduate Program, Faculty of Medicine, University of Brasília, D.F., Brazil
| | - Márcio Souza Jerônimo
- Molecular Pathology Post-Graduate Program, Faculty of Medicine, University of Brasília, D.F., Brazil
| | | | | | - Carlos Antônio Inácio
- Biology Institute, Department of Entomology and Plant Pathology, Federal Rural University of Rio de Janeiro
| | | | - Pedro Henrique Burguel
- Molecular Pathology Post-Graduate Program, Faculty of Medicine, University of Brasília, D.F., Brazil
| | - Maria Sueli Felipe
- Biology Institute, University of Brasília, D.F., Brazil Genomic Science and Biotechnology Post-Graduate Program, Catholic University of Brasília, D.F., Brazil
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de Carli ML, Cardoso BCB, Malaquias LCC, Nonogaki S, Pereira AAC, Sperandio FF, Hanemann JAC. Serum antibody levels correlate with oral fungal cell numbers and influence the patients' response to chronic paracoccidioidomycosis. Mycoses 2015; 58:356-61. [DOI: 10.1111/myc.12325] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 03/13/2015] [Accepted: 03/18/2015] [Indexed: 12/26/2022]
Affiliation(s)
- Marina Lara de Carli
- Department of Clinic and Surgery; School of Dentistry; Federal University of Alfenas; Alfenas MG Brazil
| | | | - Luiz Cosme Cotta Malaquias
- Department of Immunology and Microbiology; Institute of Biomedical Sciences; Federal University of Alfenas; Alfenas MG Brazil
| | - Suely Nonogaki
- Pathology Center; Adolfo Lutz Institute; São Paulo SP Brazil
| | | | - Felipe Fornias Sperandio
- Department of Pathology and Parasitology; Institute of Biomedical Sciences; Federal University of Alfenas; Alfenas MG Brazil
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