[Steadfastly increased level of the ciliary neurotrophic factor in the blood serum within the positive therapeutic dynamics of depression as possible prognostic marker of depressive relapse]. / Ustoichivoe povyshenie urovnya tsiliarnogo neirotroficheskogo faktora v syvorotke krovi pri polozhitel'noi terapevticheskoi dinamike depressii kak veroyatnyi prognosticheskii marker retsidiva depressivnogo epizoda.

OBJECTIVE: To study a role of the ciliary neurotrophic factor (CNTF) in the pathogenesis of depression and its prognostic significance in dynamics of the antidepressant therapy. MATERIAL AND METHODS: CNTF level was investigated in the blood serum of patients with melancholic depression (n=32) before the start of therapy and after 30 days, when improvement was achieved by at least 75% of baseline scores on the Hamilton Depression Rating Scale. RESULTS: Steadfastly increased level of CNTF in the blood serum of patients with melancholic depression compared with the control, remaining practically unchanged with an obvious improvement in the condition - 732.2±126.5 and 679.1±63.1 pg/ml of serum, respectively (p>0.05). CONCLUSION: The initially elevated level of CNTP indicates its probable significance in the pathogenesis of depression; persistently high serum CNTP level, despite clinical improvement during therapy, can serve as a predictor of the stability of the biological mechanisms of recurrent depressive disorder with a continuing risk of another relapse of a depressive episode.