
Duloxetine for Chronic Depression: a Double-blind Study
Dysthymic DisorderDepressive Disorder NOSThe investigators are studying a new antidepressant medicine, duloxetine, for the treatment of people with chronic depression. Duloxetine (trade name Cymbalta) was recently approved by the FDA for the treatment of major depression. The investigators are testing whether this medicine is also effective for adults with chronic depression (dysthymic disorder or dysthymia). Chronic depression, lasting two or more years, often causes significant suffering and impairment. The investigators study involves a 6 to 10 week double-blind Initial Phase during which half of the participants will take the new medication and half will take a placebo (an inactive look-alike pill). After the Initial Phase, a 12-week Continuation Phase will begin, during which all subjects can be treated with an FDA-approved antidepressant medication. Eligible subjects may also receive MRI scans, to help the investigators understand how antidepressants work in treating depression.

Safety and Effectiveness of Omega 3-Fatty Acids, EPA Versus DHA, for the Treatment of Major Depression...
Major Depressive DisorderThis study examines the difference in the effectiveness of two natural compounds, eicosapentanoic (EPA) and docosahexanoic (DHA)omega-3 fatty acids, in treating major depressive disorder. Both types of omega-3 fatty acids are commonly found in fish oils. It is believed that a deficiency in these omega-3 fatty acids may lead to the development of major depression.

Effects of Interpersonal Psychotherapy on Depression During and After Pregnancy
DepressionAnxiety DisordersThis study will evaluate the impact of interpersonal psychotherapy on the course of depression during and after pregnancy, as well as its effect on infant birth outcomes.

Efficacy and Safety of SR58611A in Patients With Major Depressive Disorder (SIRIUS)
Major Depressive DisorderTo evaluate the efficacy of two fixed doses of SR58611A (175 mg q12 and 350 mg q12) compared to placebo in patients with Major Depressive Disorder (MDD) using paroxetine (20 mg qd) as positive control. In addition, the tolerability and safety of SR58611A in patients with MDD will be evaluated.

Efficacy Study of Memantine Hydrochloride and Escitalopram for the Treatment of Co-Morbid Depression...
AlcoholismDepressionThe aim of the present study was to examine the influence of memantine, a noncompetitive NMDA receptor blocker, in depression co-morbid with long term alcohol heavy use comparing to SSRI-inhibitor, escitalopram. Second goal is to compare their influence to cognitive tasks and the third goal is to follow up alcohol-use with these two medicines.

Antidepressant Effects on cAMP Specific Phosphodiesterase (PDE4) in Depressed Patients
Major Depressive DisorderHealthyThe primary purpose of this protocol is to compare PDE4 levels before and after starting a selective serotonin reuptake inhibitor (SSRI) sertraline, citalopram or escitalopram in unmedicated depressed patients. The secondary purpose is to compare PDE4 levels between unmedicated depressed patients and healthy subjects.

Study of Sildenafil for Treatment of SSRI-Antidepressant Sexual Dysfunction in Women
Sexual DysfunctionDepressionThis prospective double-blind, placebo-controlled (DBPC) study, assessed the efficacy of sildenafil in women with serotonin reuptake inhibitor antidepressant-associated sexual dysfunction (SRI-AASD) following the same protocol which previously established efficacy in men with SRI-AASD.

A Study in Relapse Prevention of Treatment-Resistant Depression
Treatment Resistant DepressionThe purpose of this study is to determine whether olanzapine and fluoxetine combination (OFC) if used for a long time (47 weeks) makes patients suffering from Treatment Resistant Depression stable, determine if OFC is safe when used to treat patients with Treatment Resistant Depression for a long time (up to 47 weeks), to determine whether olanzapine and fluoxetine combination or fluoxetine alone is better to treat Treatment Resistant Depression when treated for a long time (up to 47 weeks) and to assess the quality of life during treatment.

Assessment of Cognitive Functioning Before and After Treatment With Duloxetine
Major Depressive DisorderThe purpose of this study is to study the effect of duloxetine treatment on (1) cognitive functions, the brain mechanisms involved with thinking, reasoning, learning, and remembering; (2) psychosocial functions, how someone interacts with his/her social environment; and (3) the relationship between these two functions, in people who have major depressive disorder, a severe form of depression.

Neurocognitive Enhancement in Major Depressive Disorder
Major Depressive DisorderThe purpose of this study is to examine the effects of neurocognitive enhancement on cognitive abilities and related social and adaptive behaviours in individuals diagnosed with major depressive disorder. Subjects in this study will be randomized to receive Neurocognitive Enhancement Therapy (NET) or to a wait list and then NET . Secondary aims include examining whether the cognitive benefits are potentiated by repeated exposure during in-home practice with complementary exercises. Additionally, the investigators will examine the durability of the effects and their generalization to functional capacity and everyday functional performance after completion of the groups.