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d-Limonene modulates T lymphocyte activity and viability

Author:
Lappas, Courtney M.   Lappas, Nicholas T.  


Journal:
Cellular Immunology


Issue Date:
2012


Abstract(summary):

d-Limonene, a cyclic terpene that is a major component of several plant essential oils, is used widely as an additive in perfumes, soaps, foods and beverages, and has also been shown to possess chemopreventative and chemotherapeutic activity. A limited number of studies have been conducted investigating the effect of d-limonene on immune system function. We show that d-limonene and its metabolites limonene-1-2-diol and perillic acid inhibit the production by CD3+CD4+ T cells of IFN-γ, IL-2, TNF-α, IL-4 and IL-13, and the production by CD3+CD8+ T cells of IFN-γ, IL-2, and TNF-α. Additionally, the upregulation of CD25, CD69 and CD40L by activated T lymphocytes is modulated by d-limonene, limonene-1-2-diol and perillic acid treatment. Furthermore, high concentrations of d-limonene, limonene-1-2-diol and perillic acid induce T lymphocyte cell death. These data suggest that d-limonene possesses immunomodulatory activity that must be considered when utilizing the compound for therapeutic or commercial purposes.


Page:
30-41


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