We performed a meta-analysis of over 30 case-control studies of association between schizophrenia and a bi-allelic, Bal I polymorphism in exon 1 of the dopamine D3 receptor gene. We observed a significant excess of both forms of homozygote in patients (P = 0.0009, odds ratio (OR) = 1.21, 95% Confidence Interval (CI) = 1.07-1.35) in the combined sample of 5351 individuals. No significant heterogeneity was detected between samples and the effects did not appear to be the product of publishing bias. In addition we undertook an independent, familybased association study of this polymorphism in 57 parent/proband trios, taken from unrelated European multiplex families segregating schizophrenia. A transmission disequilibrium test (TDT) showed a significant excess of homozygotes in schizophrenic patients (P = 0.004, odds ratio (OR) = 2.7, 95% CI = 1.35-5.86). Although no significant allelic association was observed, a significant association was detected with the 1-1 genotype alone (P = 0.02, OR = 2.32, 95% CI = 1.13-4.99). In addition when the results of the family-based association study were included in the meta-analysis, the homozygosity effect increased in significance (P = 0.0002, OR = 1.23, 95% CI = 1.09-1.38). The results of the meta-analysis and family-based association study provide independent support for a relationship between schizophrenia and homozygosity at the Bal I polymorphism of the D3 receptor gene, or between a locus in linkage disequilibrium with it.

For anti-stigma interventions to be effective, they should be continuously delivered to students throughout the school years and allow for an interaction between students and patients. Health promotion programmes might be an appropriate context for incorporating such interventions.

A total of 251 elderly residents of 2 boroughs of greater Athens were examined by a psychiatrist. For the assessment of depressive symptoms, the Center for Epidemiological Studies Depression (CES-D) Scale was used. Cognitive functioning was also evaluated. The prevalence of affective disorders of any type was estimated by a clinical examination with a semistructured psychiatric interview (PEF) supplemented by DSM-III criteria. A total of 27.1% of the elderly respondents reported a significant number of dysphoric or depressive symptoms and were identified as depressed cases. Respondents who had lower socioeconomic status, were widowed, were experiencing stressful life events or were living alone exhibited a significant degree of depressive psychopathology. An association between depressed mood and cognitive impairment was also found. A total of 9.5% of the sample was diagnosed as suffering from any type of affective disorder (1.6% major depression, 0.6% bipolar, 5.5% dysthymic disorder and 2.0% adjustment disorder with depressed mood). Affective disorders constitute nearly half of the total number of psychiatric diagnoses (20.3% at the sample). It is interesting that, of the 27.1% of the sample with depressed mood (> or = 16 score on CES-D Scale), only 9.5% of the sample were diagnosed as suffering from clinical types of depression.

A population of 2,075 young men aged 18-25 years selected from the conscripts of the Greek Air Force performed an antisaccade task as part of a prospective study for the identification of risk factors in the development of psychoses. The aim of this study, which is ongoing, is to follow this population and investigate the possible predictive value of oculomotor, cognitive, and psychometric factors for the development of psychosis and other psychiatric conditions. In this report we present data concerning the antisaccade task in this population. We measured performance indices, including the percentage of errors (PE), the latencies of different eye movement responses (latency for correct antisaccades, errors, corrections), and performance in perseveration-prone trials. These indices were also evaluated with respect to IQ (measured by the Raven progressive matrices test) and educational level. Mean PE was 23%, with 17% variance. This large variance is of particular importance whenever the detection of a putative deviant behavior is explored. As mean latency of the first eye movement decreased, the PE increased, as did the latency variance. While the negative correlation between percentage of error and mean latency is well established, the relationship of the latency variability of the first response to error production has not been studied before. Thus, optimal performance appears to require both an intermediate mean latency and a small variability. Furthermore, performance seems to be affected by IQ (the higher the IQ score, the lower the percentage of errors). This report offers an analysis of the interindividual variation in the performance of the antisaccade task and discusses some of the sources of this variation.