CLAUDIA DA COSTA LEITE
Projetos de Pesquisa
Unidades Organizacionais
Departamento de Radiologia, Faculdade de Medicina - Docente
LIM/44 - Laboratório de Ressonância Magnética em Neurorradiologia, Hospital das Clínicas, Faculdade de Medicina - Líder
LIM/44 - Laboratório de Ressonância Magnética em Neurorradiologia, Hospital das Clínicas, Faculdade de Medicina - Líder
16 resultados
Resultados de Busca
Agora exibindo 1 - 10 de 16
- Dorsal Anterior Cingulate Lactate and Glutathione Levels in Euthymic Bipolar I Disorder: H-1-MRS Study(2016) SOEIRO-DE-SOUZA, Marcio Gerhardt; PASTORELLO, Bruno F.; LEITE, Claudia da Costa; HENNING, Anke; MORENO, Ricardo A.; OTADUY, Maria Concepcion GarciaOxidative stress and mitochondrial dysfunction are 2 closely integrated processes implicated in the physiopathology of bipolar disorder. Advanced proton magnetic resonance spectroscopy techniques enable the measurement of levels of lactate, the main marker of mitochondrial dysfunction, and glutathione, the predominant brain antioxidant. The objective of this study was to measure brain lactate and glutathione levels in bipolar disorder and healthy controls. Eighty-eight individuals (50 bipolar disorder and 38 healthy controls) underwent 3T proton magnetic resonance spectroscopy in the dorsal anterior cingulate cortex (2x2x4.5cm(3)) using a 2-D JPRESS sequence. Lactate and glutathione were quantified using the ProFit software program. Bipolar disorder patients had higher dorsal anterior cingulate cortex lactate levels compared with controls. Glutathione levels did not differ between euthymic bipolar disorder and controls. There was a positive correlation between lactate and glutathione levels specific to bipolar disorder. No influence of medications on metabolites was observed. This is the most extensive magnetic resonance spectroscopy study of lactate and glutathione in bipolar disorder to date, and results indicated that euthymic bipolar disorder patients had higher levels of lactate, which might be an indication of altered mitochondrial function. Moreover, lactate levels correlated with glutathione levels, indicating a compensatory mechanism regardless of bipolar disorder diagnosis.
conferenceObject (18)FDG-PET and morphometric brain analysis in retired soccer players exposed to long-term mild traumatic brain injuries(2018) ARANHA, M. R.; COUTINHO, A. M.; GODOI, C.; CHAIM, K. T.; PASTORELLO, B.; ANGINAH, R.; IANOF, J.; BUCHPIGUEL, C. A.; LEITE, C. C.conferenceObject GAD1 POLYMORPHISMS ARE ASSOCIATED WITH GLUTAMATERGIC ACTIVITY IN THE ANTERIOR CINGULATE IN BIPOLAR I DISORDER(2017) SOEIRO-DE-SOUZA, Marcio; MACHADO-VIEIRA, Rodrigo; MORENO, Ricardo; CHILE, Thais; GOUVEIA, Gisele; PASTORELLO, Bruno; LEITE, Claudia; HENNING, Anke; OTADUY, Maria Concepcion; VALLADA, Homero- Exercise modifies hypothalamic connectivity and brain functional networks in women after bariatric surgery: a randomized clinical trial(2023) MEREGE-FILHO, Carlos A. A.; GIL, Saulo S.; KIRWAN, John P.; MURAI, Igor H.; DANTAS, Wagner S.; NUCCI, Mariana P.; PASTORELLO, Bruno; LIMA, Alisson Padilha de; BAZAN, Paulo R.; PEREIRA, Rosa M. R.; SA-PINTO, Ana L. de; LIMA, Fernanda R.; BRUCKI, Sonia M. D.; CLEVA, Roberto de; SANTO, Marco A.; LEITE, Claudia da Costa; OTADUY, Maria Concepcion Garcia; ROSCHEL, Hamilton; GUALANO, BrunoBackgroundObesity is a disease that may involve disrupted connectivity of brain networks. Bariatric surgery is an effective treatment for obesity, and the positive effects on obesity-related conditions may be enhanced by exercise. Herein, we aimed to investigate the possible synergistic effects of Roux-en-Y Gastric Bypass (RYGB) and exercise training on brain functional networks. MethodsThirty women eligible for bariatric surgery were randomly assigned to a Roux-en-Y gastric bypass (RYGB: n = 15, age = 41.0 & PLUSMN; 7.3 years) or RYGB plus Exercise Training (RYGB + ET: n = 15, age = 41.9 & PLUSMN; 7.2 years). Clinical, laboratory, and brain functional connectivity parameters were assessed at baseline, and 3 (POST3) and 9 months (POST9) after surgery. The 6-month, three-times-a-week, exercise intervention (resistance plus aerobic exercise) was initiated 3 months post-surgery (for RYGB + ET). ResultsExercise superimposed on bariatric surgery (RYGB + ET) increased connectivity between hypothalamus and sensorial regions (seed-to-voxel analyses of hypothalamic connectivity), and decreased default mode network (DMN) and posterior salience (pSAL) network connectivity (ROI-to-ROI analyses of brain networks connectivity) when compared to RYGB alone (all p-FDR < 0.05). Increases in basal ganglia (BG) network connectivity were only observed in the exercised training group (within-group analyses). ConclusionExercise training is an important component in the management of post-bariatric patients and may improve the hypothalamic connectivity and brain functional networks that are involved in controlling food intake.
conferenceObject Myo-Inositol Reduction in Medial Prefrontal Cortex of Obsessive Compulsive Disorder: A Proton Magnetic Resonance Spectroscopy Study(2015) BATISTUZZO, Marcelo; HOEXTER, Marcelo; COSTA, Fabiana; SHAVITT, Roseli; LOPES, Antonio; CAPPI, Carolina; MATHIS, Alice De; NATASHA, Senc O.; HENNING, Anke; PASTORELLO, Bruno; LEITE, Claudia; MIGUEL, Euripedes; OTADUY, Maria- ACC Glu/GABA ratio is decreased in euthymic bipolar disorder I patients: possible in vivo neurometabolite explanation for mood stabilization(2021) SCOTTI-MUZZI, Estevao; CHILE, Thais; MORENO, Ricardo; PASTORELLO, Bruno Fraccini; LEITE, Claudia da Costa; HENNING, Anke; OTADUY, Maria Concepcion Garcia; VALLADA, Homero; SOEIRO-DE-SOUZA, Marcio GerhardtBipolar disorder (BD) is characterized by unstable mood states ranging from mania to depression. Although there is some evidence that mood instability may result from an imbalance between excitatory glutamatergic and inhibitory GABA-ergic neurotransmission, few proton magnetic resonance spectroscopy (H-1-MRS) studies have measured these two neurometabolites simultaneously in BD. The enzyme glutamic acid decarboxylase (GAD1) catalyzes the decarboxylation of glutamate (Glu) to GABA, and its single nucleotide polymorphisms (SNPs) might influence Glu/GABA ratio. Thus, we investigated Glu/GABA ratio in the dorsal anterior cingulate cortex (dACC) of euthymic BD type I patients and healthy controls (HC), and assessed the influence of both mood stabilizers and GAD1 SNPs on this ratio. Eighty-eight subjects (50 euthymic BD type I patients and 38 HC) underwent 3T H-1-MRS in the dACC (2 x 2 x 4.5 cm(3)) using a two-dimensional JPRESS sequence and all subjects were genotyped for 4 SNPs in the GAD1 gene. BD patients had lower dACC Glu/GABA ratio compared to HC, where this was influenced by anticonvulsant and antipsychotic medications, but not lithium. The presence of GAD1 rs1978340 allele A was associated with higher Glu/GABA ratio in BD, while patients without this allele taking mood stabilizers had a lower Glu/GABA ratio. The lowering of dACC Glu/GABA could be one explanation for the mood stabilizing action of anticonvulsants and antipsychotics in BD type I euthymia. Therefore, this putative role of Glu/GABA ratio and the influence of GAD1 genotype interacting with mood stabilization medication should be confirmed by further studies involving larger samples and other mood states. ClincalTrials.gov registration: NCT01237158.
- Verbal-memory impairment is associated with widespread white-matter tract involvement in patients with temporal lobe epilepsy and hippocampal sclerosis(2023) OLIVEIRA, Joao Vitor Mahler Ferreira; SOLTI, Marina; ADDA, Carla; JORGE, Carmen; VALERIO, Rosa Maria; LYRA, Katarina; PASTORELLO, Bruno; LEITE, Claudia; OTADUY, Maria; CASTRO, Luiz Henrique Martins
- White matter tract abnormalities are associated with executive dysfunction in temporal lobe epilepsy and hippocampal sclerosis(2023) SOLTI, Marina; OLIVEIRA, Joao Vitor Mahler Ferreira; ADDA, Carla; VALERIO, Rosa; JORGE, Carmen; LYRA, Katarina; PASTORELLO, Bruno; LEITE, Claudia; OTADUY, Maria; CASTRO, Luiz Henrique Martins
- Chronic traumatic encephalopathy - a study in Brazilian retired soccer players(2019) LANOF, Jessica Natuline; AREZA-FEGYVERES, Renata; GUARIGLIA, Carla; FREIRE, Fabio; NADRUZ, Patr Prime Icia; CERASI, Alessandra; LEITE, Claudia; PASTORELLO, Bruno; CERRI, Giovanni Guido; ANGHINAH, Renato
conferenceObject Semantic fluency impairment in unilateral mesial temporal sclerosis related epilepsy is associated with extensive white matter involvement: a diffusion tensor imaging study(2017) PERES, Matheus; CASTRO, Bettina; MESSAS, Cristiane; MARTUCCI, Caio; CHAIM, Khalil; PASTORELLO, Bruno; VALERIO, Rosa; JORGE, Carmen; LYRA, Katarina; OTADUY, Maria; LEITE, Claudia; CASTRO, Luiz