RT Journal Article SR Electronic A1 Cunningham, Muriel T1 Tamoxifen Treatment of Bipolar Disorder JF MD Conference Express YR 2007 FD SAGE Publications VO 7 IS 2 SP 32 OP 33 DO 10.1177/155989770700700216 UL http://mdc.sagepub.com/content/7/2/32.abstract AB Protein kinase C (PKC) is a family of enzymes involved in phosphorylation and cellular messaging. A growing body of evidence suggests that PKC inhibition may be a possible mechanism to treat bipolar disorder. Tamoxifen, an antiestrogen used in breast cancer treatment, is currently the only PKC inhibitor capable of penetrating the central nervous system.