OBJECTIVE Synaptosomal-associated protein of 25 kDa (SNAP25) is a member of the soluble N-ethylmaleimide-sensitive factor attachment receptor (SNARE) protein complex, which plays essential roles in the modulation of different voltage-gated calcium channels and neurotransmitter release. Many previous studies have reported the SNAP25 gene to be significantly associated with attention-deficit/hype...

BACKGROUND The fourth edition of Diagnostic and Statistical Manual of Mental Disorders (DSM IV) distinguishes schizophrenia, schizophreniform disorder and brief psychotic disorder only according to the duration of the illness. Thus, the validity of these nosological concepts sounds uncertain. AIM The aim of this study was to evaluate the validity of the DSM IV concepts schizophrenia, schizoph...

OBJECTIVE Schizophrenia and psychotic bipolar disorder have a number of overlapping symptoms and risk factors, but it is not yet clear if the disorders are characterized by similar deviations in brain morphometry or whether any such deviations reflect the impact of shared susceptibility genes on brain structure. The authors used region-of-interest morphometry to volumetrically assess brain stru...

The role of cerebellar pathology in psychiatric symptoms has long been recognized. Cerebellar pathology has been associated with obsessive-compulsive disorder pathophysiology, particularly with compulsive hoarding. Likewise, some cerebellum abnormalities have been described in schizophrenia, as well as in comorbidity between obsessive-compulsive disorder and schizophrenia. The authors report th...

Schizophrenia and bipolar disorder are often viewed as distinct clinical disorders, however there is substantial overlap in their neuropathologies. While compromised cortical interneurons are implicated in both diseases, few studies have examined the relative contribution of the distinct interneuron populations to each psychotic disorder. We report reductions in somatostatin and vasoactive inte...

schizophrenia is a chronic psychotic disorder with unknown etiology that causes cognitive impairment, affecting thinking, behavior, social function, sleep and dream content. this study considered the dream content of patients with schizophrenia, siblings of patients with schizophrenia, patients with psychiatric diagnoses other than schizophrenia, and a group of healthy controls. the aim of this...

Schizophreniais a mental disorder which is characterized by thoughtsor experiences that seem out of touch with reality, disorganized speech or behavior and decreased participation in daily activities. Difficulty concentration memory may also be present. Schizophrenia mainly affects adolescence young adults. Genes play major role schizophrenia. There are five types schizophrenia (paranoid, hebep...

BACKGROUND Hemispheric lateralization of the brain occurs during development and underpins specialized functions. It is posited that aberrant neurodevelopment leads to abnormal brain lateralization in individuals with psychotic illnesses. Here, we sought to examine whether white matter hemispheric lateralization is abnormal in individuals with the psychotic spectrum disorders of schizophrenia a...

BACKGROUND Impairments in executive function and language processing are characteristic of both schizophrenia and bipolar disorder. Their functional neuroanatomy demonstrate features that are shared as well as specific to each disorder. Determining the distinct pattern of neural responses in schizophrenia and bipolar disorder may provide biomarkers for their diagnoses. METHODS 104 participant...