Over the past two decades, zoonotic sporotrichosis transmitted by naturally infected cats has become hyperendemic in Rio de Janeiro, Brazil. is the main agent involved. However, there are other forms of transmission of sporotrichosis. The aim of this study was to evaluate and associate the epidemiological, clinical and therapeutic data and the susceptibility of spp. to antifungal drugs in 43 non-zoonotic sporotrichosis cases. Forty-three clinical strains of were identified by partial sequencing of the calmodulin gene. An antifungal susceptibility test of amphotericin B, terbinafine, itraconazole, posaconazole and isavuconazole was performed according to the broth microdilution method. Most patients were male (55.8%). Regarding the source of infection, 21 patients (48.8%) reported trauma involving plants and/or contact with soil. was the predominant species (n = 39), followed by (n = 3) and (n = 1). was associated with all the sources of infection, reinforcing previous data showing the presence of this species in environmental sources, as well as with all the clinical forms, including severe cases. One clinical strain of was classified as a non-wild-type strain for amphotericin B and another for itraconazole. was classified as non-WT for all the antifungals tested. In this context, it is important to emphasize that non-zoonotic sporotrichosis still occurs in the state of Rio de Janeiro, with as the main etiological agent, primarily associated with infections acquired after traumatic inoculation with plants and/or soil contact, followed by and . In addition, non-WT strains were found, indicating the need to monitor the antifungal susceptibility profile of these species. It is crucial to investigate other natural sources of to better understand this fungal pathogen and its environment and host cycle.
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http://dx.doi.org/10.3390/jof10090610 | DOI Listing |
J Fungi (Basel)
December 2024
Laboratory of Mycology, Department of Pharmaceutical Sciences, Federal University of Paraiba (UFPB), João Pessoa 58051-900, Brazil.
Unlabelled: Sporotrichosis is a subcutaneous mycosis of global distribution, capable of affecting both humans and animals, and caused by species of the genus spp. This study aimed to evaluate the genetic diversity and mating type distribution of clinical isolates of human sporotrichosis in Paraíba, Brazil, to better understand the population structure, epidemiology, and diversification of this pathogen, as well as to explore possible transmission routes.
Methods: A total of 36 clinical isolates were morphologically identified, and clinical and demographic data were collected.
Microorganisms
October 2024
Laboratory of Medical Mycology LIM-53, Clinical Dermatology Division, Hospital das Clínicas FMUSP, Faculdade de Medicina FMUSP, Institute of Tropical Medicine, University of São Paulo, São Paulo 05403000, Brazil.
Sporotrichosis is a subcutaneous infection caused by fungi from the genus , among which displays high virulence and transmissibility. So far, classical antifungal agents have been efficient against , but here we describe the first case of therapeutic failure and a high minimum inhibitory concentration (MIC) in relation to itraconazole.
View Article and Find Full Text PDFZoonoses Public Health
November 2024
Laboratory of Emerging Fungal Pathogens, Department of Microbiology, Immunology, and Parasitology, Discipline of Cellular Biology, Federal University of São Paulo (UNIFESP), São Paulo, Brazil.
Introduction: In Brazil, the emergence of feline sporotrichosis, a neglected subcutaneous mycosis primarily transmitted by cats and caused by the fungus Sporothrix brasiliensis, has been monitored via molecular tools. This approach underscores the geographic expansion of this disease and highlights the critical role of molecular surveillance in understanding its epidemiology and guiding public health interventions.
Methods: We investigated three domestic cats (Felis catus) with multiple skin lesions in Picos, Piauí, Brazil.
Mycoses
October 2024
Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria, South Africa.
Sporotrichosis is a disease that arises from a fungal infection caused by members of the Ascomycete genus Sporothrix. The disease has a unique history in South Africa, due to an association with gold mines, where large numbers of mine workers were infected in the 1930s and 1940s. This was likely driven by hot humid conditions and timber supports used in these mine shafts.
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