Mycopathologia

, 162:363 | Cite as

Isolation of Cryptococcus laurentii from Canada Goose guano in rural upstate New York

Article

Abstract

Cryptococcus neoformans and Cryptococcus gattii are etiologic agents of cryptococcal pneumonia and meningitis, potentially lethal syndromes associated with AIDS. A related species, Cryptococcus laurentii, has recently been implicated in several cases of human disease. Guano from Canada Goose (Branta canadensis), an organism that lives closely beside man and inhabits recreational space in rural and suburban areas, might be a significant environmental reservoir of Cryptococcus organisms in non-urban areas. Cryptococcal organisms were isolated from Canada Goose guano from a site in rural northern New York, with identification based upon colony and microscopic morphology, ability to metabolize l-Dopa to melanin, and positive reaction with a commercial anti-cryptococcal capsular polysaccharide latex bead agglutination test. DNA sequences from five positive isolates were identical to each other, and identical to the ITS1-5.8S-ITS2 sequences of C. laurentii strain CBS7140 (Accession AY315665) across a 511 bp sequence. All five isolates of C. laurentii possess three of the known virulence factors common to cryptococcal organisms that cause human disease: capsule, ability to grow at 37 °C, and laccase activity.

Keywords

Cryptococcus neoformans Cryptococcus laurentii Canada Goose (Branta Canadensis

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Copyright information

© Springer 2006

Authors and Affiliations

  1. 1.Department of BiologyClarkson UniversityPotsdamUSA
  2. 2.Department of BiologyCoastal Carolina UniversityConwayUSA
  3. 3.School of Occupational and Environmental HygieneUniversity of British ColumbiaVancouverCanada
  4. 4.Trudeau InstituteSaranac LakeUSA

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