Leandro Michelon

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The serotonin transporter (5-HTT) is a candidate gene for bipolar disorder (BPD). It has been investigated for association with the illness in a series of studies, but overall results have been inconsistent and its role in the disorder remains controversial. Systematic reviews using meta-analytical techniques are a useful method for objectively and(More)
In the present study we investigated the influence of a series variants in genes (the serotonin transporter, glycogen synthase kinase-3beta, inositol polyphosphatase 1-phosphate, brain-derived neurotrophic factor and activator protein 2beta) related to the action of lithium carbonate, a drug used for prophylaxis in mood disorders. We used a sample of(More)
The human serotonin transporter gene (5-HTT) is a candidate for the pathogenesis of mood disorders, including bipolar disorder (BPD). The 5-HTT gene has a 44-bp insertion/deletion polymorphism within the promoter region (5-HTTLPR) with 2 allelic forms, the long (l) and the short (s) variants, which affect transcriptional rates of the 5-HTT gene. Association(More)
This study analyzed prevalence, frequency and cause of headache among 460 children ranging from 10 to 14 years-old from a Brazilian school. A questionnaire was handed both to children and parents to know if there would be differences among children and parental reports. The lifetime prevalence of headache was 93.5% (children reports) and 93.3% (parental(More)
Bipolar disorder (BD) is a worldwide highly prevalent mental disease. This disorder has a genetic inheritance characterized by complex transmission mechanisms involving multiple genes. Many investigation strategies have been put forward in order to identify BD susceptibility genes. Linkage studies reveal markers and candidate genes for the association(More)
OBJECTIVE To investigate the influence of brain-derived neurotrophic factor (BDNF) gene variations on cognitive performance and clinical symptomatology in first-episode psychosis (FEP). METHODS We performed BDNF val66met variant genotyping, cognitive testing (verbal fluency and digit spans) and assessments of symptom severity (as assessed with the PANSS)(More)
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