Decision-making impairment in anorexia nervosa: New insights into the role of age and decision-making style.

OBJECTIVE: Patients with anorexia nervosa (AN) often report difficulties in decision making, which may interfere with treatment. The aim of this study was to investigate decision making in a large sample of adolescent and adult patients with AN, by using the Iowa gambling task. METHOD: Participants were 611 female individuals (310 patients and 301 controls) who underwent neuropsychological and clinical assessment. RESULTS: Significantly poorer decision-making performance was observed in adult patients, whereas no difference emerged between affected and nonaffected adolescents. Both adolescent and adult patients were characterized by trends for higher levels of attention to losses in comparison with healthy controls. Although healthy adult women exhibited better decision-making performance than healthy adolescents, in AN, there was no improvement of decision making with age. A cluster analysis identified 2 different styles of decision making in both patients and controls: a conservative style and an impulsive style. DISCUSSION: Our study provides evidence of dysfunctional decision making in adult patients with AN and reveals an association between poor decision making and excessive punishment sensitivity in AN. The clinical and scientific implications of these findings merit further exploration.

Neural signatures of the interaction between the 5-HTTLPR genotype and stressful life events in healthy women.

A change in neural connectivity of brain structures implicated in the memory of negative life events has been hypothesized to explain the enhancement of memory encoding during the processing of negative stimuli in depressed patients. Here, we investigated the effects of the interaction between negative life events and the 5-HTTLPR genotype - a polymorphism of the serotonin transporter gene - on the functional and structural connectivity of the hippocampal area in 34 healthy women. All participants were genotyped for the presence of the 5-HTTLPR short variant and for the A/G single-nucleotide polymorphism; they underwent clinical assessment including structured diagnostic interviews to exclude the presence of psychiatric disorders and to assess the presence of stressful life events. Resting state functional magnetic resonance imaging and diffusion tensor imaging scans were performed. We found significant interactions between stressful events and the 5-HTTLPR genotype in both the functional connectivity of the parahippocampus with the posterior cingulate cortex and the structural connectivity between the hippocampus and both the amygdala and the putamen. In addition, we found several genotype-related differences in the relationship between functional/structural connectivity of the hippocampal area and the ability to update expectations or stress-related phenotypes, such as anxiety symptoms. If confirmed by future studies, these mechanisms may clarify the role of the 5HTTLPR genotype as a risk factor for depression, in interaction with negative events.

[A naturalistic study comparing two initial duloxetine dosing strategies in a clinical "real world" setting]. / Studio naturalistico di confronto tra due strategie di dosaggio iniziale di duloxetina in un contesto clinico "real world".

UNLABELLED: AIMS. To compare, in a "real world" setting, the efficacy and tolerability of two initial duloxetine starting doses: 30 mg once daily (q.d.) for 1 week, followed by escalation to 60 mg q.d. versus 60 mg q.d. without titolation, evaluating expecially the effects on sexual dysfunction. METHODS: The sample is constituted by outpatients meeting diagnostic criteria for mild-severe (HAMD17 > or =24 and CGI-S > or =4) Major Depressive Episode as defined by DSM-IV-TR (Diagnostic and Statistic Manual for Mental Disorder, Fourth Edition-Text Revision), based on the Structured Clinical Interview for DSM-IV-TR (Mini International Neuropsychiatric Interview, MINI). The study design planned an initial evaluation and 4 follow-up visits; at each visit the following scales were administered: Hamilton Rating Scale for Depression (HAMD17) and Anxiety (HAMA), Clinical Global Impression Severity Scale (CGI-S) for severity evaluation and Arizona Sexual Experience Scale (ASEX) for sexual disfunction evaluation. RESULTS: Both of the groups showed 90% of response (> or = 50% reduction in a patient's HAMD17 total score from baseline) within 2 months of follow-up. 50% of patients receiving a 30 mg q.d. starting dose achieved a HAMD17 total score < or =7 versus 40% of 60 mg q.d. treating group. None showed relapses during the study. After the first treatment month, the 60 mg q.d. receiving group showed a statistical significative amelioration of sexual function (Mann-Whitney test: p=0,02). CONCLUSIONS: Our naturalistic "real world" study results confirm previous duloxetine tolerability and efficacy findings suggesting a 60 mg q.d. after meal duloxetine somministration without titolation.