A second study by Joosten et al. also analyzed gene expression profiles in PBMCs isolated from 24 healthy male subjects who consumed 50mL of vodka with 200mL orange juice or only orange twice daily for 4 weeks during dinner (considered to be moderate). Pathways involving antigen presentation, B and T cell receptor signaling, and IL-15 signaling were altered with moderate vodka consumption (Joosten, van Erk et al. 2012). The most significant change was in glucocorticoid receptor (GR) signaling, which is known to down-regulate immune activity and inflammation by down-regulating NFκB (Pelaia, Vatrella et al. 2003). Indeed, NFκB was down-regulated in the alcohol group compared with the control group (Joosten, van Erk et al. 2012). The observed decrease in expression of NFκB is in line with earlier studies examining decreased pro-inflammatory cytokine production with moderate alcohol consumption.
