ENCUESTA MICOLOGICA PILOTO EN LA "LLANURA ÁRIDA DEL NORTE" DEL ESTADO FALCON (VENEZUELA)

Resumen

El trabajo se practicó con la finalidad de encontrar Coccidioides
immitis en los suelos de la "llanura árida del norte" del Estado Falcón
(Venezuela), ya que existen razones epidemiológicas que indican la presencia
del hongo en esas tierras.

Se recogieron 26 muestras de tierra en los alrededores de 14 poblaciones,
se sembraron y estudiaron las cepas que se desarrollaban. Se
inocularon suspensiones de muestras en peritoneo de ratones y se incubaron
muestras con pelos humanos estériles.
No se logró aislar Coccidiodes immitis. En un tubo de cultivo en que
se sembró el pulmón de un ratón inoculado se desarrolló Tricophyton
mentagrophytes. Se aislaron y estudiaron siete cepas de un hongo queratinófilo
del tipo Aleurisma. Con esto se demuestra que, además de Microsporium
gypseum, existe una segunda especie queratinófila en los suelos de
Venezuela.
SUMMARY
Several facts are indicative of the presence of Coccidioides immitis in
Falcón State soil (North Western part of Venezuela). Authors search Ed for
the pathogen by studying 26 samples taken from the surroundings of fourteen
rural communities throughout the "dry Northern plain".
Fungus strains grown from sowing soil samples were studied. Suspensions
of the same were peritoneally inyected into white mice. Sterile
humans hairs were used as a bait for promoting growth of keratinophilic
organisms.
Coccidioides immitis could not be isolated. Instead, Tricophyton
nientagrophytes was found growing in a tube were material from a mouse
lung had been sowed. Seven strain of a keratinophilic Aleurisma -like mold
were isolated and studied. So, a second keratinophilous species (after
Microsporum gypseum) has been shown to exist in Venezuelan soil.