Sporothrix schenckii associated with armadillo hunting in Southern Brazil: epidemiological and antifungal susceptibility profiles

Alves, Sydney Hartz; Boettcher, Cecília Schubert; Oliveira, Daniele Carvalho; Tronco-Alves, Giordano R.; Sgaria, Maria Aparecida; Thadeu, Paulo; Oliveira, Loiva Therezinha Ottonelli de; Santúrio, Jânio Morais

doi:10.1590/s0037-86822010000500010

Cited by 34 publications

(29 citation statements)

References 12 publications

(14 reference statements)

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“…Certain occupational and leisure activities, such as floriculture, horticulture, gardening, fishing, hunting, farming, mining, and others that facilitate exposure to the fungus, have over the years been associated with the transmission of the disease (196). In Uruguay, and more recently in southern Brazil, the hunting of armadillos has been related to cases of sporotrichosis (10,47). There have been reports of the mycosis following bites or scratches by animals such as cats and squirrels, insect bites, and other injuries.…”

Section: Transmission and Sources Of Infectionmentioning

confidence: 99%

Sporothrix schenckii and Sporotrichosis

Barros

Paes²,

Schubach³

2011

Clin Microbiol Rev

490

633

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SUMMARY Sporotrichosis, which is caused by the dimorphic fungus Sporothrix schenckii , is currently distributed throughout the world, especially in tropical and subtropical zones. Infection generally occurs by traumatic inoculation of soil, plants, and organic matter contaminated with the fungus. Certain leisure and occupational activities, such as floriculture, agriculture, mining, and wood exploitation, are traditionally associated with the mycosis. Zoonotic transmission has been described in isolated cases or in small outbreaks. Since the end of the 1990s there has been an epidemic of sporotrichosis associated with transmission by cats in Rio de Janeiro, Brazil. More than 2,000 human cases and 3,000 animal cases have been reported. In humans, the lesions are usually restricted to the skin, subcutaneous cellular tissue, and adjacent lymphatic vessels. In cats, the disease can evolve with severe clinical manifestations and frequent systemic involvement. The gold standard for sporotrichosis diagnosis is culture. However, serological, histopathological, and molecular approaches have been recently adopted as auxiliary tools for the diagnosis of this mycotic infection. The first-choice treatment for both humans and cats is itraconazole.

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Section: Transmission and Sources Of Infectionmentioning

confidence: 99%

Sporothrix schenckii and Sporotrichosis

Barros

Paes²,

Schubach³

2011

Clin Microbiol Rev

490

633

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“…The zoonotic potential, as exemplified by animal scratches and bites, particularly from cats, are the most common modes of transmission to humans in hyperendemic areas in Brazil [5], [6]. In some cases, human infections are associated with transmission from wild animals; for example, injuries caused by armadillos when hunting the animal [7]. Sporotrichosis has a worldwide distribution with a high incidence in temperate and tropical regions including Latin America (Brazil, Mexico, Colombia, Costa Rica, Guatemala, and Uruguay), South Africa, India, and Japan [8].…”

Section: Introductionmentioning

confidence: 99%

Chromosomal Polymorphism in the Sporothrix schenckii Complex

et al. 2014

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Sporotrichosis is a polymorphic disease caused by a complex of thermodimorphic fungi including S. brasiliensis, S. schenckii sensu stricto (s. str.), S. globosa and S. luriei. Humans and animals can acquire the disease through traumatic inoculation of propagules into the subcutaneous tissue. Despite the importance of sporotrichosis as a disease that can take epidemic proportions there are just a few studies dealing with genetic polymorphisms and genomic architecture of these pathogens. The main objective of this study was to investigate chromosomal polymorphisms and genomic organization among different isolates in the S. schenckii complex. We used pulsed field gel electrophoresis (PFGE) to separate chromosomal fragments of isolated DNA, followed by probe hybridization. Nine loci (β-tubulin, calmodulin, catalase, chitin synthase 1, Internal Transcribed Spacer, Pho85 cyclin-dependent kinase, protein kinase C Ss-2, G protein α subunit and topoisomerase II) were mapped onto chromosomal bands of Brazilian isolates of S. schenckii s. str. and S. brasiliensis. Our results revealed the presence of intra and interspecies polymorphisms in chromosome number and size. The gene hybridization analysis showed that closely related species in phylogenetic analysis had similar genetic organizations, mostly due to identification of synteny groups in chromosomal bands of similar sizes. Our results bring new insights into the genetic diversity and genome organization among pathogenic species in the Sporothrix schenckii complex.

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“…It has a worldwide distribution, especially in tropical and subtropical areas of Latin America, where areas of endemicity have been recognized (1,3,4,12). Recently, Marimon et al (9,11).…”

mentioning

confidence: 99%

Antifungal Susceptibilities of Sporothrix albicans, S. brasiliensis, and S. luriei of the S. schenckii Complex Identified in Brazil

et al. 2011

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We studied 40 strains of the species complex formerly classified as the single species Sporothrix schenckii to identify new species within this complex and evaluate their antifungal susceptibility profiles. Based on phenotypic tests (ability to grow at 37°C, colony diameters, and pigmentation of the colonies, as well as assimilation of sucrose and raffinose) and molecular assays (amplification of a fragment of the calmodulin gene), here we report the identification of S. albicans, S. brasiliensis, S. luriei, and S. schenckii; two isolates of these species were detected as itraconazole-resistant strains.Sporotrichosis is a subcutaneous mycosis affecting humans and animals caused by Sporothrix schenckii. It has a worldwide distribution, especially in tropical and subtropical areas of Latin America, where areas of endemicity have been recognized (1,3,4,12). Recently, Marimon et al. (9,11). proposed that Sporothrix schenckii is a complex encompassing six cryptic species that had been previously identified by others (4). In this context, variation in the antifungal susceptibility profiles among these new species was hypothesized. The aim of this study was to explore a collection of 40 isolates formerly classified as Sporothrix schenckii in order to identify new species and evaluate their susceptibility to antifungal agents.The isolates were from cases of human (n ϭ 31) and animal (n ϭ 9) sporotrichosis diagnosed in the hinterlands of Rio Grande do Sul (Brazil) and were maintained in the Department of Microbiology of the Universidade Federal de Santa Maria (UFSM), Santa Maria, Brazil. Among the human-derived strains, 18 (58.06%) were from fixed cutaneous sporotrichosis and 13 (41.9%) were from the lymphocutaneous form of the mycosis. Of the strains isolated from animals (n ϭ 9), eight were from cats and one (S. luriei) was isolated from a dog with sporotrichosis. As proposed by Marimon et al. (9,11), the phenotypic tests included the ability/inability to grow at 37°C on potato dextrose agar (PDA; HiMedia, Mumbay, India), different colony diameters (mm) after 21 days of incubation at 30°C on PDA, the pigmentation of the colonies on cornmeal agar (CMA), and the assimilation of sucrose and raffinose. The susceptibility tests were conducted according the procedures proposed for the M38-A2 technique (2). For molecular identification, a fragment of the calmodulin (CAL) gene was amplified from genomic DNA using the degenerate primers CL1[5Ј-GA(GA)T(AT)CAAAGGAGGCCTTCTC-3Ј] and CL2A (5Ј-TTTTTGCATCATGACTTGGAC-3Ј) (9). DNA sequencing was performed on the purified amplicons using a MegaBace 500 automatic sequencer. The sequences were aligned against sequences available in GenBank with ClustalX (version 1.8) followed by manual adjustments with a text editor. The phylogenetic analysis was performed with MEGA (Molecular Evolutionary Genetic Analysis) software version 4.0 (17).Based on recently proposed procedures (9, 11), we phenotypically identified four species: Sporothrix schenckii (n ϭ 37), Sporothrix brasiliensis (n ϭ 1), Sporo...

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Sporothrix schenckii associated with armadillo hunting in Southern Brazil: epidemiological and antifungal susceptibility profiles

Cited by 34 publications

References 12 publications

Sporothrix schenckii and Sporotrichosis

Sporothrix schenckii and Sporotrichosis

Chromosomal Polymorphism in the Sporothrix schenckii Complex

Antifungal Susceptibilities of Sporothrix albicans, S. brasiliensis, and S. luriei of the S. schenckii Complex Identified in Brazil

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