Paulo da Silva Belmonte-de-Abreu

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IMPORTANCE The treatment of schizophrenia remains a challenge, and the currently available antipsychotic drugs are slow acting and produce a number of adverse effects. OBJECTIVE To examine the effectiveness and safety of a single intravenous administration of sodium nitroprusside (0.5 μg/kg/min for 4 hours) on the positive, negative, anxiety, and(More)
The diagnosis of attention deficit hyperactivity disorder (ADHD) and oppositional defiant disorder (ODD) in adults lacks adequate assessment instruments. The aim of this investigation is to evaluate the interrater reliability of the sections of K-SADS-E adapted for the diagnosis of these disorders among adults. The adaptations were limited to asking(More)
S100B protein, a calcium binding protein produced and released by glial cells, has been used as a sensitive marker of brain damage. Previous studies have found alterations in peripheral S100B levels in schizophrenic patients on medication. We compared serum S100B levels of 20 medication-free DSM-IV schizophrenic patients and 20 age-gender matched healthy(More)
There is evidence that major psychiatric discords such as schizophrenia (SZ) and bipolar disorder (BD) are associated with dysregulation of synaptic plasticity with downstream alterations of neurotrophins. Brain-derived neurotrophic factor (BDNF) is the most widely distributed neurotrophin in the central nervous system (CNS), and performs many biological(More)
UNLABELLED There is an increasing body of evidence suggesting that oxidative stress may play a role in the pathophysiology of both schizophrenia (SZ) and bipolar disorder (BD). METHODS We compared the antioxidant enzyme, serum superoxide dismutase (SOD) and the lipid peroxidation product, thiobarbituric acid reactive substances (TBARS) as assessed in(More)
The aim of the present study is to verify if gender modifies the clinical, adaptative and psychological outcomes of adult attention–deficit/hyperactivity disorder (ADHD) subtypes. We evaluated 219 clinically referred adult patients. The interviews followed the DSM–IV criteria,using the K–SADS–E for ADHD and oppositional defiant disorder and SCID–IV for(More)
Since approximately 70% of adult patients with attention-deficit/hyperactivity disorder (ADHD) have at least one comorbid disorder, rating of impairment specifically attributable to ADHD is a hard task. Despite the evidence linking environmental adversities with negative outcomes in ADHD, life events measures have not been used to rate the disorder(More)
BACKGROUND Glutamate deregulation may be involved in the neuropathology of schizophrenia, mainly through N-methyl-d-aspartate (NMDA) receptor dysfunction. Memantine, a drug approved by the FDA for the treatment of moderate to severe Alzheimer's disease, acts as a weak nonselective NMDA receptor antagonist. The aim of this study was to examine the efficacy(More)
OBJECTIVE Previous reports suggest that cytokines act as potential mediators of the interaction between the immune and neuroendocrine systems, and that a proinflammatory state may be associated with bipolar disorder and schizophrenia. The aim is to compare cytokine levels in both disorders. METHOD Twenty euthymic bipolar disorder patients, 53 chronic(More)
The differential diagnosis of Bipolar Disorder (BD) and Major Depressive Disorder (MDD) is a diagnostic challenge during depressive episodes. Noteworthy, the proper differentiation between BD depressive state and MDD has important treatment implications. BDNF levels may be valuable adjunctive tool for this differential diagnosis. Ten subjects with MDD,(More)