Natural killer cell cytotoxity and course of illness in depressed mood.

Reynaert, Christine [UCL] Janne, Pascal [UCL] Jacques, Denis [UCL] Tordeurs, David [UCL] Zdanowicz, Nicolas [UCL]

There is now some evidence that depressed mood is associated with activation of the immune system. First, we evaluated, within a cross-sectional design, NKCA (in vitro) in 49 subjects meeting inclusion criteria either for a major depressive episode, for dysthymia, or for "double depression". We found that recent and long depressive episodes (dysthymia) are associated with a lower immunodepression. Second, we compared two subset of subjects: 14 patients meeting criteria of major depression to 14 healthy controls. The data show a significant improvement in major depression when compared to controls througout a treatment combining supportive psychotherapy and 8 mg Reboxetine™.