[Isolation of an Paracoccidioides brasiliensis exoantigen from solid culture media]

Rev Argent Microbiol. 1995 Jul-Sep;27(3):139-45.
[Article in Spanish]

Abstract

The goal of this work was to develop in solid medium a fast method to obtain Paracoccidioides brasiliensis (Pb) with a high yield. Four culture media were assayed: Sabouraud honey-agar, Sabouraud dextrose-agar, tomato -agar-medium (TOM) and a medium based on grape pulp. The most exhuberant growth was observed in medium based on grape pulp. Antigen was prepared in microscale at 6, 10 and 15 days incubation of solid cultures and the crude product concentrated by means of Centriplus tubes (Helena, France). Isolated antigens were subjected to polyacrylamide gel electrophoresis, followed by immunolabelling and detection of the characteristic gp45 antigen employing human and Pb-infected rat sera. Best results were observed after 10 days culture in grape medium. None of the other three media afforded comparable results.

Publication types

  • Comparative Study

MeSH terms

  • Agar
  • Animals
  • Antigens, Fungal / isolation & purification*
  • Culture Media* / chemistry
  • Electrophoresis, Polyacrylamide Gel
  • Glucose
  • Humans
  • Immunodiffusion
  • Molecular Weight
  • Paracoccidioides / growth & development
  • Paracoccidioides / immunology*
  • Paracoccidioidomycosis / blood
  • Paracoccidioidomycosis / immunology
  • Rats

Substances

  • Antigens, Fungal
  • Culture Media
  • Agar
  • Glucose