alexa Analysis of Sporothrix schenckii sensu stricto and Sporothrix brasiliensis virulence in Galleria mellonella.
Microbiology

Microbiology

Clinical Microbiology: Open Access

Author(s): ClavijoGiraldo DM, MatnezAlvarez JA, LopesBezerra LM, PonceNoyola P, Franco B,

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Abstract The study of the host-pathogen interaction is essential to understand the mechanisms underlying adhesion, colonization and tissue damage by pathogens. This is usually achieved by performing in vivo studies using small mammals, such as rats, mice and guinea pigs. Nowadays, the mouse models of systemic or subcutaneous infection are the gold standard assays to analyze the virulence of members of the Sporothrix schenckii complex. There are, however, invertebrates that have been recently used as alternative hosts to assess the virulence of both bacteria and fungi, and among them, larvae of Galleria mellonella are popular because they are easy to breed, and require non-specialized facilities to maintain the colony. Here, we assessed the use of G. mellonella larvae to test the virulence of S. schenckii sensu stricto and Sporothrix brasiliensis strains, and found that infection with yeast-like cells, but not with conidia or germlings, reproduces the virulence data generated in the mouse model of infection. Furthermore, with this insect model we could classify the virulence of some strains as low, intermediate or high, in line with the observations in the mammalian model. Therefore, G. mellonella is suitable, and a new alternative, to test virulence of both S. schenckii sensu stricto and S. brasiliensis. Copyright © 2016 Elsevier B.V. All rights reserved. This article was published in J Microbiol Methods and referenced in Clinical Microbiology: Open Access

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