Immunodetection of CD45 epitopes on the surface of Candida albicans cells in culture and infected human tissues.
Am J Clin Pathol 2000;
113:59-63. [PMID:
10631858 DOI:
10.1309/ljgn-v50b-bhjp-kytm]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Abstract
Candida albicans is a leading cause of disseminated fungal infection in immunocompromised patients. Candida-host cell interactions are mediated at the cell surface. Since blood-group I epitopes have been detected on the surface of C albicans cells, we investigated whether CD45, the molecule that carries the I antigen on human lymphocytes, is present on the C albicans cell surface, in culture and in human tissue specimens of human candidiasis. By using monoclonal antibodies to CD45, CD45RO, and CD45RA, we found a strong immunoreactivity at the cell surface of blastoconidia bearing germ tubes but weak or no immunostaining of the germ tubes themselves. In human tissues, immunostaining of C albicans yeast cells was detected, whereas pseudohyphae were mostly negative. CD45 epitopes on the surface of C albicans might have a role in tissue invasion and dissemination of the fungus. On the other hand, its detection may disturb quantitative non-morphology-based determinations of lymphoid cell populations in infected tissues.
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