All publications of “Orlando Graziani Povoas Barsottini”

3 results

Levodopa versus non-levodopa brain language fMRI in Parkinson’s disease

Paula Ricci Arantes, Heloise Helena Gobato, Bárbara Bordegatto Davoglio, Maria Ângela Maramaldo Barreiros, André Carvalho Felício, Orlando Graziani Povoas Barsottini, [...]

DOI: 10.1590/S1679-45082012000200010

Objective:To identify the effect of levodopa in language areas in Parkinson’s disease patients.METHODS:We evaluated 50 patients with mild to moderate Parkinson’s disease, age and gender paired to 47 healthy volunteers. We selected two homogeneous groups of 18 patients taking levodopa and 7 no levodopa patients. The functional magnetic resonance imaging verbal fluency task, with low and high cognitive demands, was performed at a 3T magnetic resonance imaging equipment. Data was analyzed with XBAM software for group maps and ANOVA comparison.RESULTS:Patients […]

Sneddon’s syndrome: case report and review of its relationship with antiphospholipid syndrome

Livia Almeida Dutra, Pedro Braga-Neto, José Luiz Pedroso, Orlando Graziani Povoas Barsottini

DOI: 10.1590/S1679-45082012000200018

The Sneddon’s syndrome is a rare disorder characterized by the occurrence of cerebrovascular disease associated with livedo reticularis. The antiphospholipid syndrome is the most frequent type of acquired thrombophilia, defined by the occurrence of thrombosis or pregnancy morbidity in the presence of persistently positive antiphospholipid antibodies. Approximately 80% of Sneddon’s syndrome patients have an antiphospholipid antibody marker. These antibodies may play a pathogenetic role in some cases of Sneddon’s syndrome, and many authors consider these two syndromes as the same […]

Transcranial sonography in Parkinson’s disease

Edson Bor-Seng-Shu, José Luiz Pedroso, Daniel Ciampi de Andrade, Orlando Graziani Povoas Barsottini, Luiz Augusto Franco de Andrade, Egberto Reis Barbosa, [...]

DOI: 10.1590/S1679-45082012000200022

Transcranial sonography has become a useful tool in the differential diagnosis of parkinsonian syndromes. This is a non-invasive, low cost procedure. The main finding on transcranial sonography in patients with idiopathic Parkinson’s disease is an increased echogenicity of the mesencephalic substantia nigra region. This hyperechogenicity is present in more than 90% of cases, and reflects a dysfunction in the dopaminergic nigrostriatal pathway. This study discussed how the hyperechogenicity of the substantia nigra may facilitate the differential diagnosis of parkinsonian syndromes.