Depression in medical students: cluster symptoms and management.

BACKGROUND: Rates of depression among medical students have been shown to be high and related to year of study and other factors. We report on cluster of symptoms related to depression and their association with other difficulties in specific domains. METHODS: 481 (Response rate=79.8%) medical students completed a questionnaire about areas of difficulty in the medical school (studies, leisure, colleagues, professors, and patients), and Beck Depression Inventory (BDI). We studied correlation among areas of difficulty and clusters of BDI along with year in the course. RESULTS: Two areas which contributed most difficulty were studies and leisure. The significant associations for studies were seen between somatic cluster of depressive symptoms and the level of the course. Difficulties associated with leisure activities and with colleagues were correlated with the affective cluster of symptoms of depression. Activities related to clinical matters especially working with patients in the internship year were associated with somatic clusters. The different associations confirmed that rather than relying on scores emphasis should be placed on clusters of symptoms. LIMITATIONS: Sample from a single medical school. CONCLUSIONS: Although the clusters are associated with specific difficulties, it is important that educators and health professionals are aware of streesors the medical students face. The correlations if confirmed in future studies with qualitative factors could guide the development of more specific therapeutic or curriculum interventions.

Cardiovascular risk in cognitively preserved elderlies is associated with glucose hypometabolism in the posterior cingulate cortex and precuneus regardless of brain atrophy and apolipoprotein gene variations.

Cardiovascular risk factors (CVRF) possibly contribute to the emergence of Alzheimer's disease (AD). Fluorodeoxyglucose-positron emission tomography (FDG-PET) has been widely used to demonstrate specific patterns of reduced cerebral metabolic rates of glucose (CMRgl) in subjects with AD and in non-demented carriers of the apolipoprotein ε4 (APOE ε4) allele, the major genetic risk factor for AD. However, functional neuroimaging studies investigating the impact of CVRF on cerebral metabolism have been scarce to date. The present FDG-PET study investigated 59 cognitively preserved elderlies divided into three groups according to their cardiovascular risk based on the Framingham 10-year risk Coronary Heart Disease Risk Profile (low-, medium-, and high-risk) to examine whether different levels of CVRF would be associated with reduced CMRgl, involving the same brain regions affected in early stages of AD. Functional imaging data were corrected for partial volume effects to avoid confounding effects due to regional brain atrophy, and all analyses included the presence of the APOE ε4 allele as a confounding covariate. Significant cerebral metabolism reductions were detected in the high-risk group when compared to the low-risk group in the left precuneus and posterior cingulate gyrus. This suggests that findings of brain hypometabolism similar to those seen in subjects with AD can be detected in association with the severity of cardiovascular risk in cognitively preserved individuals. Thus, a greater knowledge about how such factors influence brain functioning in healthy subjects over time may provide important insigths for the future development of strategies aimed at delaying or preventing the vascular-related triggering of pathologic brain changes in the AD.

Does ragging play a role in medical student depression - cause or effect?

BACKGROUND: Medical students experience a lot of stress what may contribute to symptoms of depression. In this study we set out to look at the environmental factors which may be contributing in one medical school in Brazil. METHODS: We assessed depressive symptoms using Beck's Depression Inventory in 465 and 267 medical students in 2001 and 2006 respectively. We explored possible social and environmental causes using qualitative data. RESULTS: Nearly 15% scored above the cut off for depression in both the samples. Males in the pre-clinical stage in 2006 showed an increase in depressive symptoms than males in the same cycle in 2001 (aOR=7.36 [95% CI=0.85-63.5] p=0.07). Qualitative data confirmed that factors such as ragging and low social involvement were correlated with depressive symptoms in pre-clinical stage males. LIMITATIONS: The sample size was small both for quantitative and qualitative aspects of the study. CONCLUSIONS: It appears that ragging plays an important role in the genesis of depressive symptoms in medical students.

Perceptions of and attitudes toward antidepressants: stigma attached to their use--a review.

The aim of this study was to ascertain whether there is any evidence of stigma related to the use of antidepressants. Using the PubMed and MEDLINE databases, we searched for the terms stigma, antidepressants, and depression. A protocol was developed to extract information from the papers, which were identified and explored further. Thirty-two papers were identified. We found that the stigma against depression differs from stigma against the use of antidepressants. Stigma against depression does not impact on therapeutic adherence to antidepressant use. Stigma related to antidepressant use appears to be linked with perceived emotional weakness, severity of illness, an inability to deal with problems, and a lack of belief in the therapeutic efficacy of antidepressants. Stigma against medication can be a useful target for interventions, just like the stigma related to depression. However, clinicians must be careful in avoiding the medicalization of symptoms.

Increased rates of white matter hyperintensities in late-onset bipolar disorder.

OBJECTIVES: Magnetic resonance imaging (MRI) studies have reported an increased frequency of white matter hyperintensities (WMH) in association with late-onset (LO) depression, and this has supported the notion that vascular-related mechanisms may be implicated in the pathophysiology of LO mood disorders. Recent clinical studies have also suggested a link between LO bipolar disorder (LO-BD) and cerebrovascular risk factors, but this has been little investigated with neuroimaging techniques. In order to ascertain whether there could be a specific association between WMH and LO-BD, we directly compared WMH rates between LO-BD subjects (illness onset >or= 60 years), early-onset BD subjects (EO-BD, illness onset <60 years), and elderly healthy volunteers. METHODS: T2-weighted MRI data were acquired in LO-BD subjects (n = 10, age = 73.60 +/- 4.09), EO-BD patients (n = 49, age = 67.78 +/- 4.44), and healthy subjects (n = 24, age = 69.00 +/- 7.22). WMH rates were assessed using the Scheltens scale. RESULTS: There was a greater prevalence of WMH in LO-BD patients relative to the two other groups in the deep parietal region (p = 0.018) and basal ganglia (p < 0.045). When between-group comparisons of mean WMH scores were conducted taking account of age differences (ANCOVA), there were more severe scores in LO-BD patients relative to the two other groups in deep frontal and parietal regions, as well as in the putamen (p < 0.05). CONCLUSIONS: Our results provide empirical support to the proposed link between vascular risk factors and LO-BD. If extended in future studies with larger samples, these findings may help to clarify the pathophysiological distinctions between bipolar disorder emerging at early and late stages of life.

Hypotension caused by therapeutic doses of venlafaxine: case report and proposed pathophysiological mechanisms.

Although venlafaxine is usually associated with modest increases in blood pressure and not so often clinical hypertension, there are a few reported cases of hypotension related to overdoses of this specific antidepressant. The case study of a young female patient with a history of Major Depressive Disorder who initiated treatment with venlafaxine 75 mg/day and developed hypotension when the dosage was titrated up to 225 mg/day is described. The patient did not present comorbid diseases nor use other medication. A temporal association and a dose-dependent relationship between the hypotension and the use of venlafaxine is shown. To the best of the knowledge of the authors,this is the first case report that specifically associates regular doses of venlafaxine with the presence of hypotension. A pathophysiological mechanism is proposed, involving the participation of presynaptic alpha2-adrenergic receptors and the presence of a possible genetic polymorphism of cytochrome P4502D6, which is associated with lower drug metabolization, to explain the relationship between venlafaxine in regular dosage and development of hypotension.