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Oliveira MDA, de Almeida SR, Martins JO. Novel Insights into Sporotrichosis and Diabetes. J Fungi (Basel) 2024; 10:527. [PMID: 39194853 DOI: 10.3390/jof10080527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2024] [Revised: 07/22/2024] [Accepted: 07/25/2024] [Indexed: 08/29/2024] Open
Abstract
Sporotrichosis is a type of zoonotic subcutaneous mycosis caused by different species of dimorphic fungus of the genus Sporothrix, and it is the most common form of subcutaneous mycosis in Latin America. Sporotrichosis is generally restricted to cutaneous and lymphatic tissue (i.e., localized forms), and involvement in the viscera (i.e., disseminated or disseminated cutaneous form) is uncommon, especially in the central nervous system. However, immunosuppression in individuals with diabetes mellitus can lead to the disseminated form of the disease due to a failure to eliminate the pathogen and poor infection treatment outcomes. Possible correlations between patients with diabetes and their greater susceptibility to disseminated cases of sporotrichosis include a decreased cytokine response after stimulation, increased oxidative stress, decreased chemotaxis, phagocytic activity, adhesion and rolling of neutrophils and monocytes/macrophages, and increased macrophage/monocyte and polymorphonuclear cell apoptosis. Therefore, this review highlights novel insights into diabetes and sporotrichosis by investigating how chronic inflammation affects and aggravates the infection, the possible causes of the greater susceptibility of Sporothrix sp. to hematogenous dissemination in immunocompromised patients, and the main alterations that this dissemination can cause.
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Affiliation(s)
- Mariana de Araujo Oliveira
- Laboratory of Immunoendocrinology, Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo 05508-000, SP, Brazil
| | - Sandro Rogério de Almeida
- Laboratory of Mycology, Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo 05508-000, SP, Brazil
| | - Joilson O Martins
- Laboratory of Immunoendocrinology, Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of São Paulo, São Paulo 05508-000, SP, Brazil
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da Silva AG, de Matos AFC, de Sousa BR, Ferraz CE, Luiz RLF, Neves RP, de Lima-Neto RG, Oliveira MME. Rapid Molecular Diagnosis of Sporotrichosis Directly from Biological Samples from a Reference Center in Brazil. J Fungi (Basel) 2024; 10:432. [PMID: 38921418 PMCID: PMC11204681 DOI: 10.3390/jof10060432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 06/13/2024] [Accepted: 06/14/2024] [Indexed: 06/27/2024] Open
Abstract
The gold standard diagnosis of sporotrichosis is the isolation of Sporothrix sp. in culture media, but this is a time-consuming test that is susceptible to contamination and can be affected by the fungal load. Molecular methods such as nested PCR are gaining more ground in the management of several infections as they are tools for the rapid and accurate identification of microorganisms from pure cultures or directly from biological samples. This study aimed to apply a nested PCR molecular protocol for the rapid detection of Sporothrix spp. directly from clinical samples. Thirteen samples-six from skin biopsies, five from skin exudates, and two from conjunctival secretions-were obtained from patients diagnosed with sporotrichosis due to S. brasiliensis. Calmodulin gene sequencing identified all the isolates as S. brasiliensis. Nested PCR was able to detect all the Sporothrix sensu lato directly from clinical samples as well as the CBS 120339 reference strain. The nested PCR protocol stands out as a diagnostic alternative, as it allows the identification of Sporothrix spp. directly from clinical samples without the need for fungal isolation.
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Affiliation(s)
- Amanda Gabriela da Silva
- Postgraduate Program in Tropical Medicine, Center for Medical Sciences, Federal University of Pernambuco (UFPE), Recife 50740-570, Pernambuco, Brazil; (A.G.d.S.); (B.R.d.S.)
- Laboratory for Research and Diagnosis in Tropical Diseases, Federal University of Pernambuco (UFPE), Recife 50740-570, Pernambuco, Brazil;
| | - Arthur Felipe Cavalcanti de Matos
- Laboratory for Research and Diagnosis in Tropical Diseases, Federal University of Pernambuco (UFPE), Recife 50740-570, Pernambuco, Brazil;
| | - Bruna Rodrigues de Sousa
- Postgraduate Program in Tropical Medicine, Center for Medical Sciences, Federal University of Pernambuco (UFPE), Recife 50740-570, Pernambuco, Brazil; (A.G.d.S.); (B.R.d.S.)
- Laboratory for Research and Diagnosis in Tropical Diseases, Federal University of Pernambuco (UFPE), Recife 50740-570, Pernambuco, Brazil;
| | - Claudia Elise Ferraz
- Dermatology Reference Service, Hospital das Clínicas, Federal University of Pernambuco (UFPE), Recife 50670-901, Pernambuco, Brazil;
| | - Raul Leal Faria Luiz
- Oswaldo Cruz Institute, FIOCRUZ, Av Brasil, 4365, Manguinhos, Rio de Janeiro CEP 21045-360, Brazil; (R.L.F.L.); (M.M.E.O.)
| | - Rejane Pereira Neves
- Postgraduate Program in Tropical Medicine, Center for Medical Sciences, Federal University of Pernambuco (UFPE), Recife 50740-570, Pernambuco, Brazil; (A.G.d.S.); (B.R.d.S.)
- Postgraduate Program in Fungal Biology, Biosciences Center, Federal University of Pernambuco (UFPE), Recife 50740-570, Pernambuco, Brazil
| | - Reginaldo Gonçalves de Lima-Neto
- Postgraduate Program in Tropical Medicine, Center for Medical Sciences, Federal University of Pernambuco (UFPE), Recife 50740-570, Pernambuco, Brazil; (A.G.d.S.); (B.R.d.S.)
- Laboratory for Research and Diagnosis in Tropical Diseases, Federal University of Pernambuco (UFPE), Recife 50740-570, Pernambuco, Brazil;
- Dermatology Reference Service, Hospital das Clínicas, Federal University of Pernambuco (UFPE), Recife 50670-901, Pernambuco, Brazil;
- Postgraduate Program in Fungal Biology, Biosciences Center, Federal University of Pernambuco (UFPE), Recife 50740-570, Pernambuco, Brazil
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de Oliveira VF, Petrucci JF, Taborda M, Brener PZ, Kremer PGDBB, Randi BA, Magri ASGK, Magri MMC, Levin AS, Silva GD. Clinical characteristics, diagnosis, and treatment of central nervous system sporotrichosis: Systematic review and meta-analysis. Mycoses 2024; 67:e13697. [PMID: 38374494 DOI: 10.1111/myc.13697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/05/2024] [Accepted: 01/11/2024] [Indexed: 02/21/2024]
Abstract
BACKGROUND The clinical features of central nervous system (CNS) sporotrichosis are derived from case reports and a limited series of cases. Our objective was to carry out a systematic review and meta-analysis of CNS sporotrichosis. METHODS We searched PubMed/MEDLINE, Embase, Scopus, and LILACS on 9 September 2023. Our inclusion criteria were documentation of Sporothrix and demonstrated CNS involvement. A metaproportion or metamean analysis was performed to estimate a summary proportion with 95% confidence intervals. RESULTS We included 52 cases of CNS sporotrichosis published from 1966 to 2023. Forty-six patients were male (88%, 95% CI: 77-95), and the mean age was 39 years (95% CI: 36-43). Close contact with cats was reported in 55% of cases (95% CI: 37-72). Thirty-two (61.5%) patients were from Brazil, 18 patients from the United State of America (34.6%). Only two Sporothrix species were reported: S. schenckii (26/41, 63%), and S. brasiliensis (15/41, 37%). The most common neurological symptom was headache. Meningitis was chronic in approximately 80% of cases. A significant majority of the patients were immunocompromised. HIV infection was the primary cause of immunosuppression (85%, 95% CI: 61-95). Overall mortality was 56% (22/39). The comparison of Kaplan-Meier survival curve showed a higher mortality with a statistically significant difference in immunosuppressed patients (p = .019). CONCLUSION CNS sporotrichosis represents a notable cause of chronic meningitis, especially in individuals living in the Americas with HIV infection and concurrent skin lesions.
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Affiliation(s)
- Vítor Falcão de Oliveira
- Department of Infectious and Parasitic Diseases, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Júlia Figueiredo Petrucci
- Department of Infectious and Parasitic Diseases, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Mariane Taborda
- Department of Infectious and Parasitic Diseases, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | | | | | - Bruno Azevedo Randi
- Department of Infectious and Parasitic Diseases, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Adriana Satie Gonçalves Kono Magri
- Department of Infectious and Parasitic Diseases, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Marcello Mihailenko Chaves Magri
- Department of Infectious and Parasitic Diseases, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Anna S Levin
- Department of Infectious and Parasitic Diseases, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Guilherme Diogo Silva
- Department of Neurology, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
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Almeida-Silva F, Almeida MDA, Rabello VBDS, Zancopé-Oliveira RM, Baeza LC, Lamas CDC, Lima MA, de Macedo PM, Gutierrez-Galhardo MC, Almeida-Paes R, Freitas DFS. Evaluation of Five Non-Culture-Based Methods for the Diagnosis of Meningeal Sporotrichosis. J Fungi (Basel) 2023; 9:jof9050535. [PMID: 37233246 DOI: 10.3390/jof9050535] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 04/17/2023] [Accepted: 04/24/2023] [Indexed: 05/27/2023] Open
Abstract
Sporotrichosis is the main subcutaneous mycosis worldwide. Several complications, including meningeal forms, can be observed in immunocompromised individuals. The sporotrichosis diagnosis is time-consuming due to the culture's limitations. The low fungal burden in cerebrospinal fluid (CSF) samples is another important drawback in the diagnosis of meningeal sporotrichosis. Molecular and immunological tests can improve the detection of Sporothrix spp. in clinical specimens. Therefore, the following five non-culture-based methods were evaluated for the detection of Sporothrix spp. in 30 CSF samples: (i) species-specific polymerase chain reaction (PCR); (ii) nested PCR; (iii) quantitative PCR; (iv) enzyme-linked immunosorbent assay (ELISA) for IgG detection; and (v) ELISA for IgM detection. The species-specific PCR was unsuccessful in the diagnosis of the meningeal sporotrichosis. The other four methods presented substantial levels of sensitivity (78.6% to 92.9%) and specificity (75% to 100%) for the indirect detection of Sporothrix spp. Both DNA-based methods presented similar accuracy (84.6%). Both ELISA methods were concomitantly positive only for patients with sporotrichosis and clinical signs of meningitis. We suggest that these methods should be implemented in clinical practice to detect Sporothrix spp. in CSF early, which may optimize treatment, augment the chances of a cure, and improve the prognosis of affected individuals.
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Affiliation(s)
- Fernando Almeida-Silva
- Laboratório de Micologia, Instituto Nacional de Infectologia Evandro Chagas, Fiocruz, Rio de Janeiro 21040-360, RJ, Brazil
| | - Marcos de Abreu Almeida
- Laboratório de Micologia, Instituto Nacional de Infectologia Evandro Chagas, Fiocruz, Rio de Janeiro 21040-360, RJ, Brazil
| | - Vanessa Brito de Souza Rabello
- Laboratório de Micologia, Instituto Nacional de Infectologia Evandro Chagas, Fiocruz, Rio de Janeiro 21040-360, RJ, Brazil
| | - Rosely Maria Zancopé-Oliveira
- Laboratório de Micologia, Instituto Nacional de Infectologia Evandro Chagas, Fiocruz, Rio de Janeiro 21040-360, RJ, Brazil
| | - Lilian Cristiane Baeza
- Centro de Ciências Médicas e Farmacêuticas, Universidade Estadual do Oeste do Paraná, Cascavel 85819-110, PR, Brazil
| | - Cristiane da Cruz Lamas
- Serviço Médico, Instituto Nacional de Infectologia Evandro Chagas, Fiocruz, Rio de Janeiro 21040-360, RJ, Brazil
| | - Marco Antonio Lima
- Laboratório de Pesquisa Clínica em Neuroinfecções, Instituto Nacional de Infectologia Evandro Chagas, Fiocruz, Rio de Janeiro 21040-360, RJ, Brazil
| | - Priscila Marques de Macedo
- Laboratório de Pesquisa Clínica em Dermatologia Infecciosa, Instituto Nacional de Infectologia Evandro Chagas, Fiocruz, Rio de Janeiro 21040-360, RJ, Brazil
| | - Maria Clara Gutierrez-Galhardo
- Laboratório de Pesquisa Clínica em Dermatologia Infecciosa, Instituto Nacional de Infectologia Evandro Chagas, Fiocruz, Rio de Janeiro 21040-360, RJ, Brazil
| | - Rodrigo Almeida-Paes
- Laboratório de Micologia, Instituto Nacional de Infectologia Evandro Chagas, Fiocruz, Rio de Janeiro 21040-360, RJ, Brazil
| | - Dayvison Francis Saraiva Freitas
- Laboratório de Pesquisa Clínica em Dermatologia Infecciosa, Instituto Nacional de Infectologia Evandro Chagas, Fiocruz, Rio de Janeiro 21040-360, RJ, Brazil
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Lima MA, Freitas DFS, Oliveira RVC, Fichman V, Varon AG, Freitas AD, Lamas CC, Andrade HB, Veloso VG, Almeida-Paes R, Almeida-Silva F, Zancopé-Oliveira RM, de Macedo PM, Valle ACF, Silva MTT, Araújo AQC, Gutierrez-Galhardo MC. Meningeal Sporotrichosis Due to Sporothrix brasiliensis: A 21-Year Cohort Study from a Brazilian Reference Center. J Fungi (Basel) 2022; 9:17. [PMID: 36675837 PMCID: PMC9863964 DOI: 10.3390/jof9010017] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/19/2022] [Accepted: 12/20/2022] [Indexed: 12/24/2022] Open
Abstract
Meningeal sporotrichosis is rare and occurs predominantly in immunosuppressed individuals. This retrospective study explored clinical and laboratory characteristics, treatment, and prognosis of patients with disseminated sporotrichosis who underwent lumbar puncture (LP) at a Brazilian reference center from 1999 to 2020. Kaplan-Meier and Cox regression models were used to estimate overall survival and hazard ratios. Among 57 enrolled patients, 17 had meningitis. Fifteen (88.2%) had HIV infection, and in 6 of them, neurological manifestations occurred because of the immune reconstitution inflammatory syndrome (IRIS). The most frequent symptom was headache (88.2%). Meningeal symptoms at first LP were absent in 7/17 (41.2%) patients. Sporothrix was diagnosed in cerebrospinal fluid either by culture or by polymerase chain reaction in seven and four patients, respectively. All but one patient received prolonged courses of amphotericin B formulations, and seven received posaconazole, but relapses were frequent. Lethality among patients with meningitis was 64.7%, with a higher chance of death compared to those without meningitis (HR = 3.87; IC95% = 1.23;12.17). Meningeal sporotrichosis occurs mostly in people with HIV and can be associated with IRIS. Screening LP is indicated in patients with disseminated disease despite the absence of neurological complaints. Meningitis is associated with poor prognosis, and better treatment strategies are needed.
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Affiliation(s)
- Marco A. Lima
- Evandro Chagas National Institute of Infectious Diseases (INI), FIOCRUZ, Brazilian Ministry of Health, Rio de Janeiro 21040-900, Brazil
- Neurology Section, Hospital Universitário Clementino Fraga Filho, The Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-617, Brazil
| | - Dayvison F. S. Freitas
- Evandro Chagas National Institute of Infectious Diseases (INI), FIOCRUZ, Brazilian Ministry of Health, Rio de Janeiro 21040-900, Brazil
| | - Raquel V. C. Oliveira
- Evandro Chagas National Institute of Infectious Diseases (INI), FIOCRUZ, Brazilian Ministry of Health, Rio de Janeiro 21040-900, Brazil
| | - Vivian Fichman
- Evandro Chagas National Institute of Infectious Diseases (INI), FIOCRUZ, Brazilian Ministry of Health, Rio de Janeiro 21040-900, Brazil
| | - Andréa G. Varon
- Evandro Chagas National Institute of Infectious Diseases (INI), FIOCRUZ, Brazilian Ministry of Health, Rio de Janeiro 21040-900, Brazil
| | - Andréa D. Freitas
- Evandro Chagas National Institute of Infectious Diseases (INI), FIOCRUZ, Brazilian Ministry of Health, Rio de Janeiro 21040-900, Brazil
| | - Cristiane C. Lamas
- Evandro Chagas National Institute of Infectious Diseases (INI), FIOCRUZ, Brazilian Ministry of Health, Rio de Janeiro 21040-900, Brazil
| | - Hugo B. Andrade
- Evandro Chagas National Institute of Infectious Diseases (INI), FIOCRUZ, Brazilian Ministry of Health, Rio de Janeiro 21040-900, Brazil
| | - Valdilea G. Veloso
- Evandro Chagas National Institute of Infectious Diseases (INI), FIOCRUZ, Brazilian Ministry of Health, Rio de Janeiro 21040-900, Brazil
| | - Rodrigo Almeida-Paes
- Evandro Chagas National Institute of Infectious Diseases (INI), FIOCRUZ, Brazilian Ministry of Health, Rio de Janeiro 21040-900, Brazil
| | - Fernando Almeida-Silva
- Evandro Chagas National Institute of Infectious Diseases (INI), FIOCRUZ, Brazilian Ministry of Health, Rio de Janeiro 21040-900, Brazil
| | - Rosely Maria Zancopé-Oliveira
- Evandro Chagas National Institute of Infectious Diseases (INI), FIOCRUZ, Brazilian Ministry of Health, Rio de Janeiro 21040-900, Brazil
| | - Priscila M. de Macedo
- Evandro Chagas National Institute of Infectious Diseases (INI), FIOCRUZ, Brazilian Ministry of Health, Rio de Janeiro 21040-900, Brazil
| | - Antonio C. F. Valle
- Evandro Chagas National Institute of Infectious Diseases (INI), FIOCRUZ, Brazilian Ministry of Health, Rio de Janeiro 21040-900, Brazil
| | - Marcus T. T. Silva
- Evandro Chagas National Institute of Infectious Diseases (INI), FIOCRUZ, Brazilian Ministry of Health, Rio de Janeiro 21040-900, Brazil
| | - Abelardo Q. C. Araújo
- Evandro Chagas National Institute of Infectious Diseases (INI), FIOCRUZ, Brazilian Ministry of Health, Rio de Janeiro 21040-900, Brazil
- Deolindo Couto Institute of Neurology (INDC), The Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 22290-140, Brazil
| | - Maria C. Gutierrez-Galhardo
- Evandro Chagas National Institute of Infectious Diseases (INI), FIOCRUZ, Brazilian Ministry of Health, Rio de Janeiro 21040-900, Brazil
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Beyond Domestic Cats: Environmental Detection of Sporothrix brasiliensis DNA in a Hyperendemic Area of Sporotrichosis in Rio de Janeiro State, Brazil. J Fungi (Basel) 2022; 8:jof8060604. [PMID: 35736087 PMCID: PMC9224889 DOI: 10.3390/jof8060604] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 05/27/2022] [Accepted: 05/30/2022] [Indexed: 02/04/2023] Open
Abstract
In Brazil, sporotrichosis has transitioned from a rural to urban disease, driven by a shift in the initiation of infection from the accidental inoculation of organic matter to the traumatic implantation of the fungus by cats. Since the emergence of zoonotic sporotrichosis caused by Sporothrix brasiliensis, investigations have largely ignored the environmental habitat of the pathogen due to its association with domestic cats. Therefore, we investigated 18 environmental samples collected from rural areas of two cities where zoonotic sporotrichosis is endemic, but where domestic cats are scarce. We utilized traditional culture methods, and samples were also examined with two molecular methods used for the clinical diagnosis of sporotrichosis: a nested-PCR targeting the ITS region and a species-specific PCR targeting the calmodulin gene. No Sporothrix colonies were identified by traditional culture methods. However, the nested-PCR and the species-specific PCR for S. brasiliensis were positive for 18 and 5 samples, respectively. Sequencing revealed that positive results with the nested-PCR were due to non-specific amplification of other Ophiostomatales DNA, rather than Sporothrix spp. Three of the five amplicons from the species-specific PCR were suitable for sequencing and confirmed the presence of S. brasiliensis DNA. Hence, we confirmed that S. brasiliensis, as with other Sporothrix species, has an environmental habitat. Our findings underscore the challenges of nested-PCR for Sporothrix environmental studies and highlight that sequencing must follow PCR protocols to definitively identify Sporothrix spp. in environmental samples.
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Rabello VBS, Almeida MA, Bernardes-Engemann AR, Almeida-Paes R, de Macedo PM, Zancopé-Oliveira RM. The Historical Burden of Sporotrichosis in Brazil: a Systematic Review of Cases Reported from 1907 to 2020. Braz J Microbiol 2022; 53:231-244. [PMID: 34825345 PMCID: PMC8882507 DOI: 10.1007/s42770-021-00658-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 10/21/2021] [Indexed: 01/26/2023] Open
Abstract
Sporotrichosis is a cosmopolitan subcutaneous mycosis caused by Sporothrix species. Recently, this mycosis has gained notoriety due to the appearance of new endemic areas, recognition of new pathogenic species, changes in epidemiology, occurrence of outbreaks, and increasing numbers of cases. The purpose of this study is to analyze the peculiarities of sporotrichosis cases in Brazil since its first report in the country until 2020. In this work, ecological, epidemiological, clinical, and laboratorial characteristics were compiled. A systematic review of human sporotrichosis diagnosed in Brazil and published up to December 2020 was performed on PubMed/MEDLINE, SciELO, Web of Science, and LILACS databases. Furthermore, animal sporotrichosis and environmental isolation of Sporothrix spp. in Brazil were also evaluated. The study included 230 papers, resulting in 10,400 human patients. Their ages ranged from 5 months to 92 years old and 55.98% were female. The lymphocutaneous form was predominant (56.14%), but systemic involvement was also notably reported (14.34%), especially in the lungs. Besides, hypersensitivity manifestations (4.55%) were described. Most patients had the diagnosis confirmed by isolation of Sporothrix spp., mainly from skin samples. Sporothrix brasiliensis was the major agent identified. HIV infection, cardiovascular diseases, and diabetes were the most common comorbidities. Cure rate was 85.83%. Concerning animal sporotrichosis, 8538 cases were reported, mostly in cats (90.77%). Moreover, 13 Sporothrix spp. environmental strains were reported. This review highlights the burden of the emergent zoonotic sporotrichosis in Brazil, reinforcing the importance of "One Health" based actions to help controlling this disease.
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Affiliation(s)
- Vanessa Brito Souza Rabello
- Laboratório de Micologia, Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Marcos Abreu Almeida
- Laboratório de Micologia, Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Andrea Reis Bernardes-Engemann
- Laboratório de Micologia, Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Rodrigo Almeida-Paes
- Laboratório de Micologia, Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Priscila Marques de Macedo
- Laboratório de Pesquisa Clínica Em Dermatologia Infecciosa, 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.
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Luiz RLF, Menezes RC, Pereira SA, de Oliveira RDVC, Oliveira MME. Nested PCR for the Diagnosis of Feline Sporotrichosis From Formalin-Fixed and Paraffin-Embedded Samples Using Different DNA Extraction Protocols. Front Vet Sci 2022; 8:755897. [PMID: 35071377 PMCID: PMC8766819 DOI: 10.3389/fvets.2021.755897] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 12/13/2021] [Indexed: 12/25/2022] Open
Abstract
Sporotrichosis is a chronic, cosmopolitan granulomatous mycosis that affects humans and animals. The infection is caused by the dimorphic fungi Sporothrix sp. The aims of the present study were to evaluate, standardize and validate a nested PCR technique using two DNA purification kits for the extraction of DNA from formalin fixed and paraffin-embedded tissues (FFPE) for Sporothrix sp. detection. FFPE mycological culture pellet samples of different Sporothrix species (S. chilensis, S. mexicana, S. pallida, S. globosa, S. brasiliensis and S. schenckii) were used as positive controls and clinical FFPE tissue samples of animals positive for Cryptococcus sp., Leishmania infantum and Histoplasma sp. were used as negative controls. Ten clinical FFPE skin samples from cats with sporotrichosis were used to validate the nested PCR. These samples were cut into two distinct paraffin sectioning protocols (5 and 16 μm thick). The paraffin sections were subjected to two different DNA extraction kits (chemical and thermal extractions). A nested PCR was performed on the extracted DNA to identify the genus Sporothrix. The chemical extraction protocol with the 5 μm thick paraffin section was more effective in extracting DNA from Sporothrix sp. from FFPE samples and the nested PCR technique showed the highest sensitivities (100% in the positive controls and of 50% in the skin samples of cats) and specificity (100%). Therefore, the nested PCR using this protocol has great potential to be applied in Sporothrix sp. diagnosis in FFPE samples of cats.
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Affiliation(s)
- Raul Leal Faria Luiz
- Laboratory of Taxonomy, Biochemistry and Bioprospecting of Fungi, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Rodrigo Caldas Menezes
- Laboratory of Clinical Research on Dermatozoonoses in Domestic Animals, Evandro Chagas National Institute of Infectious Diseases, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Sandro Antonio Pereira
- Laboratory of Clinical Research on Dermatozoonoses in Domestic Animals, Evandro Chagas National Institute of Infectious Diseases, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
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