Sullivan J L, Cavenar J O, Maltbie A, Stanfield C
Lancet. 1977;2(8052-8053):1325-7. doi: 10.1016/s0140-6736(77)90370-1.
Platelet-monoamine-oxidase activity predicts treatment response to lithium in manic-depressive illness. In the treatment-responsive group enzyme activity is similar to that in normal controls, whereas in the treatment-refractory group enzyme activity is significantly less than both control and treatment-responsive groups.