نتایج جستجو برای: histoplasma capsulatum
تعداد نتایج: 1453 فیلتر نتایج به سال:
H. Friedman obtained remarkable results about the longest finite sequence x such that for all i 6= j the word x[i..2i] is not a subsequence of x[j..2j]. In this note we consider what happens when “subsequence” is replaced by “subword”.
A sensitive and specific immunological method was developed for rapid identification of the mycelial forms of Histoplasma capsulatum var. capsulatum, H. capsulatum var. duboisii, and H. farciminosum and for separation of these pathogenic fungi from morphologically similar hyphomycetes and other fungal pathogens. This method is based on the fact that all of the Histoplasma spp. produce H and M h...
WooDs and Wahlen (1959) proposed Histoplasma capsulatum as a cause for an ophthalmoscopic entity in man. The epidemiological significance of this suggestion is apparent when one considers that over 30 million Americans are histoplasminpositive (Silverman, Schwarz, Lahey, and Carson, 1955). An investigation of ocular histoplasmosis was therefore initiated in this laboratory, and primary ocular i...
Until recently, Histoplasma capsulatum was believed to harbour three varieties, var. capsulatum (chiefly a New World human pathogen), var. duboisii (an African human pathogen) and var. farciminosum (an Old World horse pathogen), which varied in clinical manifestations and geographical distribution. We analysed the phylogenetic relationships of 137 individuals representing the three varieties fr...
Histoplasma capsulatum is a pathogenic fungus that causes life-threatening lung infections. About 500,000 people are exposed to H. capsulatum each year in the United States, and over 60% of the U.S. population has been exposed to the fungus at some point in their life. We performed genome-wide population genetics and phylogenetic analyses with 30 Histoplasma isolates representing four recognize...
Patients with histoplasmosis may test falsely negative for Histoplasma capsulatum antigenuria. In some cases antigen is present at levels below the assay's detection limit, and ultrafiltration could improve sensitivity. Antigen was detected following ultrafiltration in 73.8% of falsely negative specimens versus 2% of controls. Ultrafiltration improved sensitivity with a small reduction in speci...
Histoplasma capsulatum is a fungal pathogen that requires the induction of cell-mediated immunity (CMI) for host survival. We have demonstrated that human dendritic cells (DC) phagocytose H. capsulatum yeasts and, unlike human macrophages (Mø) that are permissive for intracellular growth, DC killed and degraded the fungus. In the present study, we sought to determine whether the mechanism(s) by...
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