Escitalopram add-on in stable Schizophrenia with subsyndromal depression

Background: Significant proportion of the patients of schizophrenia suffer from subsyndromal symptomatic depressive symptoms (SSD) which not only add to the burden of disease but also to the already pre-existing challenges of living with this serious mental illness. Many psychiatrists prescribe antidepressants to patients with schizophrenia who have subsyndromal symptomatic depressive symptoms but data regarding SSD in schizophrenia is meagre. Aim was to study the effect of addition of Escitalopram on psychopathology, cognition and functioning in patients with stable schizophrenia having subsyndromal depressive symptoms and to compare these parameters with patients treated with antipsychotics alone.Methods: The study was a prospective, 8-week randomized double-blind placebo-controlled trial. Seventy four patients who fulfilled the diagnostic criteria of Schizophrenia on the basis of the ICD10-DCR, adjudged to be stable clinically and not requiring any increase in dose of antipsychotic medication over the last eight weeks were recruited into the study. The patients randomly received either Antipsychotics with add-on Escitalopram (10 mg/day) or Antipsychotics with placebo for 8 weeks. The patients were assessed using the HAM-D, CDRS, PANSS, SCoRS, SOFAS and CGI scores at the end of 8 weeks. Patients were also assessed for adverse events at baseline, week 4 and week 8.Results: A total of sixty-six patients who completed the study were analyzed. The HAM-D, CDRS and PANSS score showed significantly better cognition and functioning in the patients of add-on Escitalopram group when compared with the placebo group. There was no significant difference between the two groups in terms of observed side effects.Conclusions: Escitalopram addition to the standard anti-psychotic treatment of schizophrenia, in patients having subsyndromal depressive symptoms, results in better cognition and improved functioning.

Psychosocial, Physical, and Autonomic Correlates of Depression in Korean Adults: Results from a County-Based Depression Screening Study

OBJECTIVE: We aimed to investigate the prevalence and psychosocial and neurophysiological correlates of depression in a large county-based cohort of Korean adults. METHODS: We recruited 2355 adults from a rural county-based health promotion program. The following psychometric scales were used: the Center for Epidemiologic Studies Depression scale (CES-D) was used to assess depression, the General Health Questionnaire (GHQ) was used to evaluate stress, and the Medical Outcome Study Social Support Survey (MOS-SSS) was used to determine perceived social support. Heart rate variability (HRV) was used to assess neurophysiological properties. The psychosocial and neurophysiological variables of adults with depression (CES-D score > or =25) and without depression (CES-D score <25) were statistically compared. A logistic regression model was constructed to identify factors independently associated with depression. RESULTS: We estimated that 17.7% of the subjects had depression, which was associated with old age, being female, being single, less religious affiliation, high education, low body mass index (BMI), low levels of aerobic exercise, low social support, and a low HRV triangular index. The explanatory factors of depression included high education, less religious affiliation, low levels of current aerobic exercise, low BMI, and low social support. CONCLUSION: Given the relatively high prevalence of overall depression, subsyndromal depression should also be regarded as an important issue in screening. The independent factors associated with depression suggest that practical psychosocial intervention, including brief psychotherapy, aerobic exercise, and other self-help methods should be considered. In addition, the HRV results suggest that further depression screening accompanied by neurophysiological features would require fine methodological modifications with proactive efforts to prevent depressive symptoms.

Cognitive Impairment and Decreased Quality of Life in Elderly Patients with Subsyndromal Depression

OBJECTIVES: Non-major depression with fewer symptoms than required for a Diagnostic and Statistical Manual of Mental Disorders-4th edition diagnosis of major depressive disorder (MDD) has consistently been found to be associated with functional impairment. In this study, we aim to estimate the cognitive impairment and the quality of life in elderly patients with subsyndromal depression (SSD) compared with non-depressive elderly (NDE). METHODS: The Korean version of Mini International Neuropsychiatric Interview was administered to 194 outpatients with depression and 108 normal controls. SSD is defined as having five or more current depressive symptoms with core depressive symptoms (depressive mood or loss of interest or pleasure) during more than half a day and more than seven days over two weeks. Depression was evaluated by the Korean form of Geriatric Depression Scale of a 15-item short version. Global cognition was assessed by Mini-Mental State Examination in the Korean version of CERAD assessment packet (MMSE-KC). Subjective cognitive impairment was assessed by the Subjective Memory Complaint Questionnaire. Quality of life was evaluated by the Korean Version of Short-Form 36-Item Health Survey. RESULTS: The mean score of the MMSE-KC in the SSD group was lower than that in the NDE group with adjustment for age, gender, and education [F = 4.270, p = 0.04, analysis of covariance (ANCOVA)]. If we defined those having Z-score of MMSE-KC < -1.5 as a high risk group of cognitive impairment, the odds ratio for the high risk group of cognitive impairment was 1.86 [95% confidence intervals (CI) 1.04-3.34] in SSD and 7.57 (95% CI 3.50-16.40) in MDD compared to NDE. The scores of physical component summary (F = 9.274, p = 0.003, ANCOVA) and mental component summary (F = 53.166, p < 0.001, ANCOVA) in the SSD group were lower than those in the NDE group with adjustment for age, gender, and education. CONCLUSIONS: The subjects with SSD, as well as those with MDD, showed impairment of global cognition and also experienced low quality of life in both physical and mental aspects, compared to the NDE group.

Subsyndromal Depression

Subsyndromal depression (SSD) is found to be more prevalent than major depressive disorder (MDD) and minor depressive disorder (MnDD). SSD is also associated with adverse clinical outcomes, increased risk of suicide, increased social dysfunction and disability, increased risk for future mood disorders, and increased uses of medical and mental health services. DSM-IV diagnostic criteria are not suitable for capturing SSD. Although there is no agreement on gold standard to define SSD so far, three definitions of SSD are available. First, SSD is defined as having two or more current depressive symptoms without core depressive symptoms (depressive mood or loss of interest) and with time threshold (most of the day and nearly every day over at least two weeks). Second, SSD is defined as having two or more current depressive symptoms with core depressive symptoms and without time threshold. Third, SSD is defined by using cutoff points of depression rating scales. SSD may represent a prodromal, residual, or interepisode symptomatic state in the course of MDD and MnDD. More than a half of SSD patients became any type of depressive disorders (SSD, MnDD and MDD) at 1 year. SSD may represent a discrete category of its own, without prior or consequent episodes of MDD. Considering clinical significance of SSD such as its high prevalence, significant psychosocial impairment and chronicity and serious outcomes, researchers and clinicians should be more vigilant in capturing and caring for patients with SSD.

Geriatric Depression

Geriatric depression is a major public health problem. There has been significant progress in our understanding of the nature, clinical course, and treatment of geriatric depression. Important new findings have emerged in a number of areas directly affecting clinical care and have, in turn, stimulated further research. These findings include the association of geriatric depression with brain abnormality and vascular disease;clinical importance of subsyndromal depression;the possible role of sex hormone;the clinical utility of new antidepressant treatments:and clear relationship between depression and suicide. These new findings in various area of geriatric depression were discussed in the present article.