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Depression: 21st Century Solutions + The Dark Side of Wheat

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Abstract Title:

Delta 9-Tetrahydrocannabinol regulates Th1/Th2 cytokine balance in activated human T cells.

Abstract Source:

J Neuroimmunol. 2002 Dec ;133(1-2):124-31. PMID: 12446015

Abstract Author(s):

Michael Yuan, Sylvia M Kiertscher, Qingwen Cheng, Richard Zoumalan, Donald P Tashkin, Michael D Roth

Article Affiliation:

Michael Yuan

Abstract:

Human leukocytes express cannabinoid (CB) receptors, suggesting a role for both endogenous ligands and Delta 9-tetrahydrocannabinol (THC) as immune modulators. To evaluate this, human T cells were stimulated with allogeneic dendritic cells (DC) in the presence or absence of THC (0.625-5 microg/ml). THC suppressed T cell proliferation, inhibited the production of interferon-gamma and shifted the balance of T helper 1 (Th1)/T helper 2 (Th2) cytokines. Intracellular cytokine staining demonstrated that THC reduced both the percentage and mean fluorescence intensity of activated T cells capable of producing interferon-gamma, with variable effects on the number of T cells capable of producing interleukin-4. Exposure to THC also decreased steady-state levels of mRNA encoding for Th1 cytokines, while increasing mRNA levels for Th2 cytokines. The CB2 receptor antagonist, SR144528, abrogated the majority of these effects. We conclude that cannabinoids have the potential to regulate the activation and balance of human Th1/Th2 cells by a CB2 receptor-dependent pathway.

Study Type : In Vitro Study

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Sayer Ji
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Depression: 21st Century Solutions + The Dark Side of Wheat

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