Influence of social cognition as a mediator between cognitive reserve and psychosocial functioning in patients with first episode psychosis.

BACKGROUND: Social cognition has been associated with functional outcome in patients with first episode psychosis (FEP). Social cognition has also been associated with neurocognition and cognitive reserve. Although cognitive reserve, neurocognitive functioning, social cognition, and functional outcome are related, the direction of their associations is not clear. Therefore, the main aim of this study was to analyze the influence of social cognition as a mediator between cognitive reserve and cognitive domains on functioning in FEP both at baseline and at 2 years. METHODS: The sample of the study was composed of 282 FEP patients followed up for 2 years. To analyze whether social cognition mediates the influence of cognitive reserve and cognitive domains on functioning, a path analysis was performed. The statistical significance of any mediation effects was evaluated by bootstrap analysis. RESULTS: At baseline, as neither cognitive reserve nor the cognitive domains studied were related to functioning, the conditions for mediation were not satisfied. Nevertheless, at 2 years of follow-up, social cognition acted as a mediator between cognitive reserve and functioning. Likewise, social cognition was a mediator between verbal memory and functional outcome. The results of the bootstrap analysis confirmed these significant mediations (95% bootstrapped CI (-10.215 to -0.337) and (-4.731 to -0.605) respectively). CONCLUSIONS: Cognitive reserve and neurocognition are related to functioning, and social cognition mediates in this relationship.

Predictors of pathological gambling severity taking gender differences into account.

BACKGROUND: The current study aims to identify predictors of pathological gambling (PG) severity, taking gender differences into account, in an outpatient sample of pathological gamblers seeking treatment. METHODS: The sample for this study consisted of 103 subjects (51 women and 52 men) meeting current DSM-IV-TR criteria for PG. Linear and logistic regression analyses were used to examine different risk factors (gender, age, impulsivity, sensation seeking, self-esteem) and risk markers (depression, anxiety, gambling-related thoughts, substance abuse) as predictors of PG severity. RESULTS: Impulsivity, maladjustment in everyday life and age at gambling onset were the best predictors in the overall sample. When gender differences were taken into account, duration of gambling disorder in women and depression and impulsivity in men predicted PG severity. In turn, a high degree of severity in the South Oaks Gambling Screen score was related to older age and more familiy support in women and to low self-esteem and alcohol abuse in men. Female gamblers were older than male gamblers and started gambling later in life, but became dependent on gambling more quickly than men. CONCLUSIONS: Further research should examine these data to tailor treatment to specific patients' needs according to sex and individual characteristics.

Lithium levels and lifestyle in patients with bipolar disorder: a new tool for self-management.

BACKGROUND: Patients should get actively involved in the management of their illness. The aim of this study was to assess the influence of lifestyle factors, including sleep, diet, and physical activity, on lithium levels in patients with bipolar disorder. METHODS: A multicenter study was performed. In total, 157 lithium measurements were done biweekly in a sample of 65 patients (35 women) over 6 weeks. Lifestyle, based on total sleep hours and physical activity, was assessed by actigraphy. Diet was evaluated using the Mediterranean Lifestyle Index (Medlife). RESULTS: 35.4% of patients had a normal weight. The mean Medlife score was 14.5 (± 2.5) (moderate-good adherence to Mediterranean diet). BMI, daily dose of lithium and intensity of physical activity had a combined effect on lithium levels, after adjustment for other variables. Patients who practiced intense physical exercise, who took lower doses and had a higher BMI exhibited lower levels of lithium. CONCLUSIONS: Higher physical activity and BMI contribute to lower lithium levels. Patients should be made aware of these relationships to improve their perception of control and self-management. Lifestyle-based interventions contribute to establishing a more personalized medicine.

Suicide among physicians: Major risk for women physicians.

INTRODUCTION: The risk of suicide is related to professional activity. Preliminary data suggest that being in the medical profession increases the risk of suicide in women. The objective of this nationwide study is to compare the death rate of physicians due to suicide with that of the general population and to assess the differences based on gender. MATERIALS AND METHODS: All physicians and the general population who died by suicide in Spain between 2005 and 2014, both inclusive, were studied. Between these years, the Spanish population grew from 43,662,613 to 46,455,123 persons and from 199,123 to 238,240 number of doctors. The data relating to the deaths of physicians were extracted from the databases of the General Council of Official Medical Associations (CGCOM) and data related to the general population were obtained from the National Institute of Statistics (INE). The variables included in the analyses are gender, age, specialty, place of residence and death, and causes of death according to the ICD-10. RESULTS: The annual mean of physician deaths was 918, with an annual crude rate of 4.8 per 1,000 registered physicians. It is confirmed that physicians have a significantly higher suicide rate (average of 1.3%) than the general population (average of 0.8%) (p = 0.003). The comparison of suicide between men and women doctors is significantly higher in women (X2= 53.068, p<0.001). In addition, if we separate by gender, female physicians have a suicide rate 7.5% higher than women from the general population, although the difference is not significant (X2 = 2.614, p = 0.107). CONCLUSIONS: . Suicide is higher among physicians than the general population and affects female physicians significantly more.

BDNF and NGF Signalling in Early Phases of Psychosis: Relationship With Inflammation and Response to Antipsychotics After 1 Year.

Previous studies have indicated systemic deregulation of the proinflammatory or anti-inflammatory balance in individuals with first-episode psychosis (FEP) that persists 12 months later. To identify potential risk/protective factors and associations with symptom severity, we assessed possible changes in plasma levels of neurotrophins (brain-derived neurotrophic factor [BDNF] and nerve growth factor [NGF]) and their receptors in peripheral blood mononuclear cells (PBMCs). Expression of the 2 forms of BDNF receptors (active TrkB-FL and inactiveTrkB-T1) in PBMCs of FEP patients changed over time, TrkB-FL expression increasing by 1 year after diagnosis, while TrkB-T1 expression decreased. The TrkB-FL/TrkB-T1 ratio (hereafter FL/T1 ratio) increased during follow-up in the nonaffective psychosis group only, suggesting different underlying pathophysiological mechanisms in subgroups of FEP patients. Further, the expression of the main NGF receptor, TrkA, generally increased in patients at follow-up. After adjusting for potential confounders, baseline levels of inducible isoforms of nitric oxide synthase, cyclooxygenase, and nuclear transcription factor were significantly associated with the FL/T1 ratio, suggesting that more inflammation is associated with higher values of this ratio. Interestingly, the FL/T1 ratio might have a role as a predictor of functioning, a regression model of functioning at 1 year suggesting that the effect of the FL/T1 ratio at baseline on functioning at 1 year depended on whether patients were treated with antipsychotics. These findings may have translational relevance; specifically, it might be useful to assess the expression of TrkB receptor isoforms before initiating antipsychotic treatment in FEPs.

Affective dimensions as a diagnostic tool for bipolar disorder in first psychotic episodes.

OBJECTIVE: To examine the predictive diagnostic value of affective symptomatology in a first-episode psychosis (FEP) sample with 5 years' follow-up. METHOD: Affective dimensions (depressive, manic, activation, dysphoric) were measured at baseline and 5 years in 112 FEP patients based on a factor structure analysis using the Young Mania Rating Scale and Hamilton Depression Rating Scale. Patients were classified as having a diagnosis of bipolar disorder at baseline (BDi), bipolar disorder at 5 years (BDf), or "other psychosis". The ability of affective dimensions to discriminate between these diagnostic groups and to predict a bipolar disorder diagnosis was analysed. RESULTS: Manic dimension score was higher in BDi vs. BDf, and both groups had higher manic and activation scores vs. "other psychosis". Activation dimension predicted a bipolar diagnosis at 5 years (odds ratio=1.383; 95% confidence interval, 1.205-1.587; P=0.000), and showed high levels of sensitivity (86.2%), specificity (71.7%), positive (57.8%) and negative predictive value (90.5%). Absence of the manic dimension and presence of the depressive dimension were both significant predictors of an early misdiagnosis. CONCLUSION: The activation dimension is a diagnostic predictor for bipolar disorder in FEP. The manic dimension contributes to a bipolar diagnosis and its absence can lead to early misdiagnosis.