alexa The opioid antagonist naloxone induces a shift from type 2 to type 1 cytokine pattern in normal and skin-grafted mice.
Molecular Biology

Molecular Biology

Journal of Cell Science & Therapy

Author(s): Sacerdote P, Gaspani L, Panerai AE

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Abstract Opioid peptides affect different immune functions. We present evidence that these effects could be mediated by the modulation of Th1/Th2 cytokine production. The acute and chronic treatment with the opioid receptor antagonist naloxone decreased the production of IL-4 by splenocytes of C57BL/6 and Balb/cJ mice, that present a Th1/Th2 dominance, respectively, immunized with the protein antigen KLH. In contrast, IL-2 and IFN-gamma levels were increased after naloxone treatment. These results indicate that naloxone increases Th1 and decreases Th2 cytokine production. Moreover in C57BL/6 mice, naloxone treatment was able to accelerate skin-graft rejection, a Th1-mediated phenomenon, by increasing Th1 cytokine production. The effect of naloxone could be ascribed to the removal of the regulatory effects exerted by endogenous opioid peptides, which could activate Th2 and suppress Th1 cytokines.
This article was published in Ann N Y Acad Sci and referenced in Journal of Cell Science & Therapy

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