Cryptococcus Neoformans, Cryptococcus Gattii: Serotypes in Venezuela

Mycopathologia. 2008 Sep;166(3):149-53. doi: 10.1007/s11046-008-9132-1. Epub 2008 May 30.

Abstract

Cryptococcus neoformans is one of the medically important yeast-like fungi. C. neoformans var. gatti has been made a species: C. gatti. In our country, there are few studies about these two species and their serotypes. The aim of this study was to determine the distribution of C. neoformans and C. gattii, and their serotypes in Venezuelan clinical isolates. One hundred and twenty C. neoformans and 12 C. gattii clinical isolates were identified by L-canavanine, glycine, and bromothymol blue agar media (CGB). These were investigated by agglutination and adsorption studies with anticryptococcal sera, which were produced by rabbit immunization. Of the 132 isolates 59.8% were typed serotype A (C. neoformans), followed by 25.8% serotype D (C. neoformans), 5.3% serotype AD (C. neoformans), and 5.3% were typed serotype C (var. gattii). Additionally 3.8% were serotype B (C. gattii).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Cryptococcosis / epidemiology*
  • Cryptococcosis / microbiology*
  • Cryptococcus / classification*
  • Cryptococcus / isolation & purification
  • Cryptococcus neoformans / classification*
  • Cryptococcus neoformans / isolation & purification
  • Culture Media
  • Humans
  • Immunization
  • Mycological Typing Techniques
  • Rabbits
  • Serotyping
  • Species Specificity
  • Venezuela / epidemiology

Substances

  • Culture Media