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Scedosporium (ex. Pseudoalleschia) boydii

Scedosporium (ex. Pseudoalleschia) boydii is a topic covered in the Johns Hopkins ABX Guide.

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MICROBIOLOGY

  • Nomenclature change: prior to the era of molecular phylogeny and sequencing, the nomenclature of fungi allowed for the use of names describing sexual and asexual forms. So based on their ability to develop sexual structures on culture media, Pseudoallescheria boydii and Scedosporium apiospermum were considered to be the same species as Pseudallescheria is the teleomorph state of Scedosporium.
    • Now, phylogenetic analysis has determined that P. boydii (anamorph or asexual form: Scedosporium boydii) is a different species from P. apiosperma (anamorph S. apiospermum).
    • As dual nomenclature is abandoned the preferred name to refer to P. boydii has become Scedosporium boydii, as an example.
  • Scedosporium species include: S. apiospermum, S. boydii, S. aurantiacum
  • Filamentous fungus. Thin-walled, septate, branching hyphae; sized 2.5-5 microns.
    • Ubiquitous environmental mold; typically found in soil, sewage, brackish/polluted water.
    • Identification through fungal culture is imperative as histopathology it is indistinguishable from Aspergillus.
  • Acquisition through inhalation or traumatic inoculation through the skin.
  • High concentrations of Scedosporium species can be found near gas stations, in urban parks, at industrial sites, and within agricultural areas (this is related to nitrogen concentration and pH)[7].

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Last updated: June 6, 2019

Citation

Fabre, Valeria. "Scedosporium (ex. Pseudoalleschia) Boydii." Johns Hopkins ABX Guide, The Johns Hopkins University, 2019. Pediatrics Central, peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540456/all/Pseudallescheria_boydii.
Fabre V. Scedosporium (ex. Pseudoalleschia) boydii. Johns Hopkins ABX Guide. The Johns Hopkins University; 2019. https://peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540456/all/Pseudallescheria_boydii. Accessed June 25, 2019.
Fabre, V. (2019). Scedosporium (ex. Pseudoalleschia) boydii. In Johns Hopkins ABX Guide. Available from https://peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540456/all/Pseudallescheria_boydii
Fabre V. Scedosporium (ex. Pseudoalleschia) Boydii [Internet]. In: Johns Hopkins ABX Guide. The Johns Hopkins University; 2019. [cited 2019 June 25]. Available from: https://peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540456/all/Pseudallescheria_boydii.
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TY - ELEC T1 - Scedosporium (ex. Pseudoalleschia) boydii ID - 540456 A1 - Fabre,Valeria,M.D. Y1 - 2019/06/06/ BT - Johns Hopkins ABX Guide UR - https://peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540456/all/Pseudallescheria_boydii PB - The Johns Hopkins University DB - Pediatrics Central DP - Unbound Medicine ER -