Histoplasma capsulatum


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His·to·plas·ma cap·su·la·tum

(his'tō-plaz'mă kap'sū-lā'tŭm),
A dimorphic fungus species of worldwide distribution that causes histoplasmosis in humans and other mammals; its ascomycetous state is Ajellomyces capsulatum. The organism's natural habitat is soil fertilized with bird and bat droppings, where it grows as a mold, fragments of which, following inhalation, produce the primary pulmonary infection; within the mammalian host tissues, inhaled mycelial fragments grow as uninuclear yeasts that reproduce by budding. This parasitic form may also be induced in the laboratory by culturing the mycelial phase at 37°C on a blood-enriched medium; growth reverts to the mycelial form when the temperature is below 37°C. Histoplasma capsulatum var. duboisii causes a clinically distinct disease, African histoplasmosis, in which large yeast cells with thicker walls are found in tissues, in contrast to the small yeast cells of Histoplasma capsulatum var. farciminosum, which causes epizootic lymphangitis.
[histo- + G. plasma, something formed]

Histoplasma capsulatum

Etymology: Gk, histos + plasma + L, capsula, little box
a dimorphic fungal organism that is a single budding yeast at body temperature and a mold at room temperature. It is the causative organism in histoplasmosis, common in the Mississippi River Valley. The fungus, spread by airborne spores from soil contaminated with excreta from birds or infected bats, acts as a parasite on the cells of the reticuloendothelial system. See also histoplasmosis.

His·to·plas·ma cap·su·la·tum

(his'tō-plaz'mă kap-sū-lā'tŭm)
A dimorphic fungus species that causes histoplasmosis; its ascomycetous state is Ajellomyces capsulatum. The organism's natural habitat is soil fertilized with bird and bat droppings, where it grows as a mold, fragments of which, following inhalation, produce the primary pulmonary infection; within the mammalian host, inhaled mycelial fragments grow as uninuclear yeasts that reproduce by budding. H. capsulatum is encountered primarily in Africa and in North America.
[histo- + G. plasma, something formed]

Histoplasma

a genus of fungi belonging to the phylum Ascomycota.

Histoplasma capsulatum
a species of pathogenic fungi that cause histoplasmosis. The fungi appear in tissues as small, single oval bodies.
Histoplasma capsulatum var. farciminosum
phylogenically diverse fungi within the species H. capsulatum. Called also H. farciminosum. Causes epizootic lymphangitis of horses.
References in periodicals archive ?
Puede ser considerada como homologa en cierto sentido a la tuberculosis, ya que el Histoplasma capsulatum y el Mycobacterium tuberculosis usan a los macrofagos como celulas hospedadoras y pueden generar infecciones agudas, persistentes o potencialmente diseminadas (Woods, 2002).
Similarly, Histoplasma capsulatum, which is another fungi usually associated with birds' excreta,24 was also not isolated in this study.
Diagnosis is based on typical clinical findings, as well as positive histoplasmin skin test or history of exposure to the pathogen such as residence in an endemic area for Histoplasma capsulatum.
Isolation of Histoplasma capsulatum from tissues of bats captured in the Aguas Buenas caves, Aguas Buenas, Puerto Rico.
Development and evaluation of an enzyme-linked immunosorbent assay to detect Histoplasma capsulatum antigenuria in immunocompromised patients.
Histoplasma capsulatum utilizes siderophores for intracellular iron acquisition in macrophages.
tuberculosis Histoplasma capsulatum Hepatitis Coxiella burnetii
Se ha demostrado que la pared de las celulas levaduriformes en hongos dimorficos como Blastomyces dermatitidis, Histoplasma capsulatum y P brasiliensis contienen predominantemente [alfa]-glucano y solamente pequenas cantidades de [beta]-glucano, mientras que el [beta]-glucano es abundante en la fase micelial (19).
La histoplasmosis es una enfermedad granulomatosa, producida por Histoplasma capsulatum y tiene una distribucion cosmopolita (1).
For example, antibodies have been demonstrated to be important for maintaining immunity to Candida albicans and Histoplasma capsulatum in mouse models of infection (Montagnoli et al.
Aspectos epidemiologicos de Histoplasma capsulatum em morcegos em areas urbanas do estado de Sao Paulo.
Pleural effusion due to Histoplasma capsulatum and idiopathic CD14 lymphocytopenia.