Peer relationships play a critical role in the development of adolescents, not only for the acquisition of social skills but also for the sense of personal identity and competence. Thus the quality of peer relationships influences actual and future mental health of the adolescent.

SEYLE (Saving and Empowering Young Lives in Europe) is a randomized controlled trial, funded by the EU, evaluating interventions for mental health promotion and suicide prevention. The study comprised 12,395 high-school students from 11 European countries.

We investigated the differences on psychological problems between students with poor and good peer relationships.

1,195 adolescents (mean age 15.3 ± 0.6; 68% females) from the Molise region constituted the Italian sample. Adolescents were identified as with poor peer relationships if they never or just sometimes get along with people of their age, feel that peers like having them in the group and feel that peers were kind and helpful. Psychometric measures were used to assess mental health problems such as depression (Beck Depression Inventory II), anxiety (Zung Self-Assessment Anxiety Scale), well-being (WHO-5) and suicidal ideation (Paykel Suicide Scale).

Adolescents who reported poor peer relationships scored significantly higher (p < .005) on the scales assessing depression, anxiety and suicidal ideation and significantly lower (p < .001) on the WHO-5.

Particularly in adolescence peer relationships may influence psychological well-being and vice versa mental health influences the openness to the others. So promoting mental health and contemporary improve social skills could lead adolescents to a better life.

Truancy is a serious public health problem that affects adolescents from all countries around the world. It negatively affects almost every aspect in the life, including physical, mental health, social and economical conditions. Young who are habitual truants are more likely to engage in at-risk behaviour like suicidal behaviours.

This analysis investigated the prevalence of truancy and suicidal behaviours in the Italian sample.

to reduce truancy among European adolescents improving mental health in European high schools.

the WE- STAY intervention carried out in 6 different European Countries. In Italy a sample of 2265 High school students (mean age 15.6±0,6; 64,4% females) was selected. Baseline evaluation of students' lifestyle, coping styles, at-risk truancy, suicidal behaviour and mental health issues was collected using a structured questionnaire.

6% has been absent from school for 7 days or more without a valid excuse during the past year (6.6% male); 20,3% as considered as truant student (three or more skipped days per month without a valid excuse in the past year). 4,6% have seriously considered taking own life during past 2 weeks have thought about suicide, and 1,2% tried to take own life in past 2 weeks. The analysis showed as correlation between skipped school and suicidal behaviour (p < .001)

Teens engaging in risk behaviours are at increased odds of depression, suicidal ideation, and suicide attempts (Hallfors et al. 2004). The preliminary We-Stay data confirm the prevalence of at-risk behaviours is higher among truant students.

Truancy negatively affects almost every aspect in the life, including physical, mental health, social and economical conditions.

To implement and evaluate outcomes of three different kinds of intervention against truancy. A mechanistic intervention to stop truancy will be used as control.

To reduce truancy among European adolescents improving mental health in European high schools.

The WE- STAY intervention carried out in 6 different European Countries. In Italy a sample of 2265 High school students (mean age 15.6 ± 0,6; 64,4% females) was selected. The students were randomized into one of four different intervention arms. Baseline evaluation of students' lifestyle, coping styles, at-risk truancy, self-harm behaviours and mental health issues was collected using a structured questionnaire.

6% has been absent from school for 7 days or more without a valid excuse during the past year. 55,0% of the sample has smoked cigarettes; 7,2% drank alcohol 4 or more time during the week (13,9% male and 3,4% female). About the use of drugs, 17,4% of them used drugs at least once in a lifetime. 16% of the students started a fight at least once in a lifetime.

Truancy is often related to mental health problems and at-risk behaviours. The truancy has been the focus of a different policy initiatives, often ended in failure. Through the implementation of WE-STAY is possible to acquire more data on truancy prevalence and its correlated psycho-social and psychiatric aspects, as well as information on school and parents attitudes toward this phenomenon.

According to previous studies the prevalence of adolescent depression is 4–8% both in the USA and Europe. the aim of the current study was to investigate the prevalence of adolescent depression separately in several European countries.

Data were drawn from the Saving and Empowering Young Lives in Europe (SEYLE) study, which included 11 countries (Austria, Estonia, France, Germany, Hungary, Ireland, Italy, Israel, Romania, Slovenia and Spain) and Sweden served as the coordinating centre. Depression was measured by the Beck Depression Inventory-II (BDI-II). Adolescents with a score of 20 or greater on the BDI-II were defined as depressed. Multiple imputations were conducted to address missing data.

Out of 14,115 students who consented to participate, finally 12,395 adolescents (5,568 (44.92%) boys and 6,827 (55.08%) girls) were enrolled into the study. the mean age of the students was 14.81 years (SD = .83). Significant differences were detected in the ratio of non-depressed and depressed adolescents among countries (χ2(20) = 385.352 p = .000). the prevalence of depressed adolescents ranged from 7.1% to 19.4%. the prevalence of depressed adolescents according to country in increasing order is: Hungary: 7.1%, Austria: 7.6%, Romania: 7.6%, Estonia: 7.9%, Ireland: 8.5%, Spain: 8.6%, Italy: 9.2%, Slovenia: 11.4%, Germany: 12.9%, France: 15.4%, Israel: 19.4%.

Based on a screening tool our data underlines the importance of taking account country specific prevalence rates of adolescent depression.

Immune dysfunction is thought to play a critical role in the pathophysiology of bipolar disorder (BD). Better insight into the genetic control of innate immune responses is of importance due to possible interactions with environmental risk factors such as infectious agents, particularly early in life.

Given the importance of Toll-like receptors (TLRs) in innate immunity, we analysed the association of selected genetic variants of TLR-2 and TLR-4, both major sensors of pathogenic infectious and non-infectious structures, with BD.

Explore possible implications of the innate arm of the immune response in BD.

Genomic DNAs from 572 BD patients and 202 controls were analyzed for the distribution of polymorphisms on the TLR-2 and TLR-4 loci using TaqMan®. Associations were examined using Chi-square test.

We found that TLR-4 rs1927914 AA and rs11536891 TT genotypes were more frequent in BD patients than in controls (corrected p; pc = .02 and .02 respectively) particularly in early-onset BD (EOBD) patients (pc = .004 and .006) born during the summer season (pc = 02 and .002 respectively). We also found that TLR-2 rs3804099 TT and rs4696480 TT genotypes were significantly more prevalent in EOBD group as compared to the late-onset BD (LOBD) subset, the latter only after excluding patients with positive family history of psychiatric disorders (pc=0.024 and 0.002 respectively).

We report an association between BD and TLR-2 and TLR-4 genetic variants suggesting an important role for pathogens in disease development.

Our understanding of the complex relationship between schizophrenia symptomatology and etiological factors can be improved by studying brain-based correlates of schizophrenia. Research showed that impairments in value processing and executive functioning, which have been associated with prefrontal brain areas [particularly the medial orbitofrontal cortex (MOFC)], are linked to negative symptoms. Here we tested the hypothesis that MOFC thickness is associated with negative symptom severity.

This study included 1985 individuals with schizophrenia from 17 research groups around the world contributing to the ENIGMA Schizophrenia Working Group. Cortical thickness values were obtained from T1-weighted structural brain scans using FreeSurfer. A meta-analysis across sites was conducted over effect sizes from a model predicting cortical thickness by negative symptom score (harmonized Scale for the Assessment of Negative Symptoms or Positive and Negative Syndrome Scale scores).

Meta-analytical results showed that left, but not right, MOFC thickness was significantly associated with negative symptom severity (βstd = −0.075; p = 0.019) after accounting for age, gender, and site. This effect remained significant (p = 0.036) in a model including overall illness severity. Covarying for duration of illness, age of onset, antipsychotic medication or handedness weakened the association of negative symptoms with left MOFC thickness. As part of a secondary analysis including 10 other prefrontal regions further associations in the left lateral orbitofrontal gyrus and pars opercularis emerged.

Using an unusually large cohort and a meta-analytical approach, our findings point towards a link between prefrontal thinning and negative symptom severity in schizophrenia. This finding provides further insight into the relationship between structural brain abnormalities and negative symptoms in schizophrenia.

Although auditory verbal hallucinations (AVH) are a core symptom of schizophrenia, they also occur in non-psychotic individuals, in the absence of other psychotic, affective, cognitive and negative symptoms. AVH have been hypothesized to result from deviant integration of inferior frontal, parahippocampal and superior temporal brain areas. However, a direct link between dysfunctional connectivity and AVH has not yet been established. To determine whether hallucinations are indeed related to aberrant connectivity, AVH should be studied in isolation, for example in non-psychotic individuals with AVH.

Resting-state connectivity was investigated in 25 non-psychotic subjects with AVH and 25 matched control subjects using seed regression analysis with the (1) left and (2) right inferior frontal, (3) left and (4) right superior temporal and (5) left parahippocampal areas as the seed regions. To correct for cardiorespiratory (CR) pulsatility rhythms in the functional magnetic resonance imaging (fMRI) data, heartbeat and respiration were monitored during scanning and the fMRI data were corrected for these rhythms using the image-based method for retrospective correction of physiological motion effects RETROICOR.

In comparison with the control group, non-psychotic individuals with AVH showed increased connectivity between the left and the right superior temporal regions and also between the left parahippocampal region and the left inferior frontal gyrus. Moreover, this group did not show a negative correlation between the left superior temporal region and the right inferior frontal region, as was observed in the healthy control group.

Aberrant connectivity of frontal, parahippocampal and superior temporal brain areas can be specifically related to the predisposition to hallucinate in the auditory domain.