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Augmentation of natural killer cell and antibody-dependent cellular cytotoxicity in BALB/c mice by sulforaphane, a naturally occurring isothiocyanate from broccoli through enhanced production of cytokines IL-2 and IFN-gamma.

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Department of Immunology, Amala Cancer Research Center, Thrissur, Kerala, India.


Effect of sulforaphane on cell-mediated immune (CMI) response was studied in normal as well as Ehrlich ascites tumor-bearing BALB/c mice. Administration of sulforaphane significantly enhanced natural killer (NK) cell activity in both normal as well as tumor-bearing animals, and the activity was observed earlier than in tumor-bearing control animals. Antibody-dependent cellular cytotoxicity (ADCC) also was enhanced significantly in both normal as well as tumor-bearing animals after sulforaphane administration compared with untreated control tumor-bearing animals. An early antibody-dependent complement-mediated cytotoxicity (ACC) also was observed in sulforaphane-treated normal and tumor-bearing animals. Administration of sulforaphane significantly enhanced the production of Interleukin-2 and Interferon-gamma in normal as well as tumor-bearing animals. In addition, sulforaphane significantly enhanced the proliferation of splenocytes, bone marrow cells, and thymocytes by stimulating the mitogenic potential of various mitogens such as concanavalin A, phytohaemagglutinin, poke weed mitogen, and lipopolysaccharide.

[Indexed for MEDLINE]

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