SLC39A14 and alcoholic liver diseases: Accordingly, downregulation of ZIP14 and consequent zinc deficiency was observed in a mouse model of alcoholic liver disease (260), Moreover, the lack of ZIP14 upregulation in both IL-6 and iNOS knockout mice clearly suggests that the expression of this zinc transporter is under the control of pro-inflammatory cytokines, namely IL-1 β and IL-6 (261, 262).