Multilocus Genetic Profile Reflecting Low Dopaminergic Signaling Is Directly Associated with Obesity and Cardiometabolic Disorders Due to Antipsychotic Treatment.

Treatment with second-generation antipsychotics (SGAs) can cause obesity and other cardiometabolic disorders linked to D2 receptor (DRD2) and to genotypes affecting dopaminergic (DA) activity, within reward circuits. We explored the relationship of cardiometabolic alterations with single genetic polymorphisms rs1799732 (NG_008841.1:g.

COMT haplotypes, catecholamine metabolites in plasma and clinical response in schizophrenic and bipolar patients.

Aim: We examined the association of COMT haplotypes and plasma metabolites of catecholamines in relation to the clinical response to antipsychotics in schizophrenic and bipolar patients.

Patients & Methods: We studied 165 patients before and after four weeks of treatment, and 163 healthy controls. We assessed four COMT haplotypes and the plasma concentrations of HVA, DOPAC and MHPG.

The influence of the Val158Met catechol-O-methyltransferase polymorphism on the personality traits of bipolar patients.

Introduction: Certain personality traits and genetic polymorphisms are contributing factors to bipolar disorder and its symptomatology, and in turn, this syndrome influences personality. The aim of the present study is to compare the personality traits of euthymic bipolar patients with healthy controls and to investigate the effect of the catechol-O-methyltransferase (COMT) Val158Met genotype on those traits. We recruited thirty seven bipolar I patients in euthymic state following a manic episode and thirty healthy controls and evaluated their personality by means of the Cloninger's Temperament and Character Inventory (version TCI-R-140).

Neurodevelopmental markers in different psychopathological dimensions of first episode psychosis: the ESPIGAS study.

Objective: The main aim of this study was to explore whether specific groups of patients with first episode non-affective psychosis could be identified on a psychopathological basis and, then, whether such identified groups could be validated by exploring their correlation with a variety of neurodevelopmental markers.

Method: Eighty-seven patients with a first episode of non-affective psychotic disorder were consecutively recruited. We assessed psychopathology and neurological soft signs using the PANSS and the Neurological Evaluation Scale, respectively.