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      Aislamiento de levaduras del género Cryptococcus de excretas de palomas Translated title: Isolation of yeast of the genus Cryptococcus in pigeon's faeces

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          Abstract

          La criptococosis es una micosis oportunista causada por una levadura encapsulada, Cryptococcus neoformans. El microorganismo ha sido aislado en las excretas y nidos de palomas, ya que éstos son ricos en sustancias orgánicas, con humedad relativa que favorece el crecimiento de las levaduras. En nuestro medio se ha observado que los centros hospitalarios se encuentran frecuentemente "habitados" por palomas, constituyendo una probable fuente de infección para los pacientes hospitalizados, que pueden estar inmunosuprimidos, bien sea por la patología de base que presenten, la administración de drogas inmunosupresoras, antibioticoterapia u otros tratamientos. Si a estos pacientes inmunocomprometidos se le añade otro factor de riesgo, como puede ser la inhalación de esporas de hongos oportunistas, representaría un problema de salud pública.

          Translated abstract

          Cryptococcosis is an opportunistic mycosis caused by the yeast Cryptococcus neoformans. It has been isolated from manure and nest of pigeons and other avian habitats which are rich in many organic substances with relative high humidity that allows the yeast grow in the medium. We have observed that many hospitals in our country are habitats by pigeon and avian, which can be a probably sources of infections in inmunocompromised patients, because of their pathology, therapy with antibiotic u other treatment. If these patients inhalant spores from opportunistic fungus, then it will be health public problem.

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          Isolation of both varieties ofCryptococcus neoformansfrom saprophytic sources in the city of Rio de Janeiro, Brazil

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            Molecular typing of Cryptococcus neoformans serotype D clinical isolates.

            Cryptococcus neoformans serotype A is responsible for the majority of cryptococcal infections in AIDS patients. In France, approximately 17% of the patients are infected with serotype D, regardless of their human immunodeficiency virus status. In a retrospective study of 273 patients, we found that serotype D was unevenly distributed in France. We wondered if this was related to the yeast's genetic background. We used karyotyping and DNA fingerprints generated by UT-4p to analyze 40 serotype D clinical isolates. We found an extensive polymorphism, with only two conserved karyotypes from drug-addicted patients living in the same area. Although highly variable, the DNA fingerprints were classified into 10 groups. Four pairs of isolates were identical; three of these pairs were from patients living in the same area, but there was no other correlation with the geographical area. The two isolates with identical karyotypes belonged to the same fingerprint group. Five of the six isolates that made up fingerprint group I were recovered from drug-addicted patients (P < 0.002; chi-square), and all five isolates found in fingerprint group III were from male homosexual patients (P < 0.02). Finally, five of the seven isolates from patients with cryptococcal pneumonia were classified as fingerprint group V (P < 0.04). These results suggest that there are possible relationships between characteristics of the isolates and body localization or even risk factors. Results of the present study warrant other studies on isolates of all serotypes and on isolates from clinical and environmental sources.
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              Isolation of Cryptococcus neoformans var. neoformans in the aviaries of the Antwerp Zoological Gardens.

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                Author and article information

                Journal
                rsvm
                Revista de la Sociedad Venezolana de Microbiología
                Rev. Soc. Ven. Microbiol.
                Organo Oficial de la Sociedad Venezolana de Microbiología. (Caracas, DF, Venezuela )
                1315-2556
                July 2001
                : 21
                : 2
                : 29-30
                Affiliations
                [01] orgnameInstituto Nacional de Higiene Rafael Rangel
                [03] orgnameHospital de Clinicas Caracas
                [02] orgnameInstituto Medico Valera
                Article
                S1315-25562001000200008 S1315-2556(01)02100208
                fc649d58-8527-4df4-ac1d-282e9140e012

                http://creativecommons.org/licenses/by/4.0/

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                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 7, Pages: 2
                Product

                SciELO Venezuela

                Categories
                Investigaciones Originales y Otras Modalidades de Publicación

                Levaduras,Cryptococcus,hábitat
                Levaduras, Cryptococcus, hábitat

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