Depression is a common mental disorder; effective methods for treating it are also available. Its recognition and diagnosis are prerequisite to effective treatment. A majority of depressed patients are generally managed in the primary care setting; only a half of the cases, however, are identified at their first visit. Screening instruments to improve recognition of depression have therefore been developed. The Depression Scale (DEPS), consisting of 10 items, was developed and tested in primary care patients aged 18 to 64 years. Clinical assessments were made on the basis of Present State Examination interviews with 436 patients. The DEPS proved to be satisfactory. Increasing age and poor education had an adverse effect on the screening process, however. The sensitivity of the DEPS for clinical depression was 74% and the specificity for non-depression 85%. The sensitivity for severe depression was 84% and the specificity for symptom-free patients 93%. The DEPS seems to improve the recognition of depression in primary care and may also be suitable for screening depression in the general population and for identifying high-risk groups.
Genes that regulate the serotonin signalling system are potential targets for research in the aetiology of mood disorders and also in the treatment response of serotonin reuptake inhibitors. In this study, we evaluated the association of seven serotonin signal transduction-linked single nucleotide polymorphisms [HTR1A (rs6295), HTR2A (rs6313, rs6311 and rs7997012), HTR6 (rs1805054), TPH1 (rs1800532) and TPH2 (rs1386494)] with major depressive disorder and/or treatment outcome with serotonin reuptake inhibitors. Patients who met the criteria for major depressive disorder were treated for 6 weeks with fluoxetine, paroxetine or citalopram. The treatment response was evaluated with the Montgomery-Asberg Depression Rating Scale, and according to predefined response criteria, the patients were divided into responders, nonresponders, remitters and nonremitters. Altogether, 86 patients completed the entire study according to the study protocol. We had also a control population (N = 395) of healthy blood donors. None of the seven single nucleotide polymorphisms was associated with major depressive disorder or with treatment response in our study population of Finnish individuals.
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