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J Infect Dis. 1999 Oct;180(4):1186-94.

Suppression of acquired immunity against Listeria monocytogenes by amphotericin B-mediated inhibition of CD8 T cell function.

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Institut für Medizinische Mikrobiologie und Hygiene, Fakultät für Klinische Medizin Mannheim der Universität Heidelberg, 68167 Mannheim, Germany.


Amphotericin B is frequently used for the treatment of fungal infections of immunocompromised individuals. Whereas immunomodulatory side effects of this agent are known, the influence of amphotericin B was studied in the model of murine Listeria monocytogenes infection. Treatment of L. monocytogenes-immune mice with a nontoxic dose of amphotericin B (0.75 mg/kg) reduced antilisterial protection by 4-5 orders of magnitude, while it had no significant effect on natural immunity against L. monocytogenes in naive mice. Treatment of mice with amphotericin B also abolished the protection mediated by transfer of an L. monocytogenes-specific CD8 T cell line. Furthermore, in vitro analysis showed that amphotericin B impaired target cell lysis and interferon-gamma production by peptide-specific CD8 T cell lines and antigen presentation by L. monocytogenes-infected macrophagelike cells. These data indicate that amphotericin B has a strong suppressive effect on the function of CD8 T cells in vitro and in vivo.

[Indexed for MEDLINE]

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