KETTE DUALIBI RAMOS VALENTE
Projetos de Pesquisa
Unidades Organizacionais
Instituto de Psiquiatria, Hospital das Clínicas, Faculdade de Medicina
LIM/21 - Laboratório de Neuroimagem em Psiquiatria, Hospital das Clínicas, Faculdade de Medicina - Líder
LIM/21 - Laboratório de Neuroimagem em Psiquiatria, Hospital das Clínicas, Faculdade de Medicina - Líder
37 resultados
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- Delineating behavioral and cognitive phenotypes in juvenile myoclonic epilepsy: Are we missing the forest for the trees?(2016) VALENTE, Kette D.; RZEZAK, Patricia; MOSCHETTA, Sylvie P.; VINCENTIIS, Silvia de; COAN, Ana C.; GUERREIRO, Carlos A. M.Introduction: Patients with juvenile myoclonic epilepsy (JME) have executive dysfunction and impulsive traits. There are lines of evidence that JME is a heterogeneous epilepsy syndrome considering outcome. In this study, we aimed to analyze this heterogeneity beyond seizure control. The objective was to identify whether the pattern of cognitive dysfunction and impulse control is also heterogeneous, in an attempt to establish possible differences in patients with easy-and hard-to-control epilepsies. Methods: Essentially, 57 patients with JME were compared with 44 controls. Patients and controls were assessed with a neuropsychological battery for executive, attention, and memory functions. The expression of impulsive traits was evaluated with the Temperament and Character Inventory - novelty seeking domain. Then, patients were categorized according to seizure control as having easy-and hard-to-control JME. Results: Patients with hard-to-control JME showed worse performance in 12 out of 25 neuropsychological tests than those with easy-to-control JME. Patients with hard-to-control JME also demonstrated significantly higher scores in novelty seeking -subfactor impulsiveness (p=0.002). Significance: Our study demonstrated the existence of distinct or more severe cognitive and psychiatric profiles in a subset of patients with JME. Patients with treatment-refractory seizures seem to present a broader impairment related to both cognitive deficits and impulsive traits. These findings suggest that patients with JME are not equally compromised by executive and memory deficits or dysfunction, neither by their impulsive traits. Thus, there is a need for a better characterization of patients with JME to include diverse phenotypes since our results suggest a possible existence of distinct groups of patients with JME.
- Distinct domains of impulsivity are impaired in juvenile myoclonic epilepsy but not in temporal lobe epilepsy(2015) RZEZAK, Patricia; MOSCHETTA, Sylvie P.; LIMA, Ellen; CASTRO, Carolina X. L.; VINCENTIIS, Silvia; COAN, Ana Carolina; GUERREIRO, Carlos; BUSATTO FILHO, Geraldo; VALENTE, Kette D.Objective: The Barratt Impulsiveness Scale (BIS-11) is the most widely used questionnaire to study impulsivity in persons with psychiatric disorders, but it has rarely been applied to persons with epilepsy. The present study aimed to evaluate the usefulness of BIS-11 as a tool to explore impulsivity in two distinct epilepsy syndromes. Method: The BIS-11 was applied to 20 patients with juvenile myoclonic epilepsy (JME) (32.5 +/- 8.95 years old), 20 patients with temporal lobe epilepsy (TLE) (37.7 +/- 13.25 years old), and 26 healthy controls (31.86 +/- 11.25 years old). The scores in motor, attentional, and lack of planning impulsivity were compared between groups. Results: Patients with JME showed higher scores than patients with TLE and controls in all domains: motor (JME vs TLE: 28.60 vs 13.25 (mean score), p < 0.001 and JME vs controls: 28.60 vs 14.12, p < 0.001), attentional (JME vs TLE: 21.55 vs 13.45, p < 0.001 and JME vs controls: 21.55 vs 14.88, p < 0.001) and nonplanning (JME vs TLE: 28.05 vs 13.10, p < 0.001 and JME vs controls: 28.05 vs 16.15, p < 0.001). Conclusion: Higher BIS-11 scores in all domains of impulsivity [i.e., motor, attentional, and lack of planning] corroborated previous findings described in patients with JME. On the other hand, BIS-11 could not demonstrate problem solving and inhibitory control deficits related to impulsive behavior, which were described in patients with TLE. Other behavioral measures may be more sensitive to some aspects of impulsivity in TLE. Our results reinforce the concept that distinct epileptic syndromes require different neuropsychological approaches, especially considering a complex construct such as impulsivity.
- Quality of life and psychosocial adjustment: the moderator role of anxiety symptoms in persons with temporal lobe epilepsy due to hippocampal sclerosis(2023) LIMA, E. M.; GOIS, J.; VINCENTIIS, S.; VALENTE, K. D. R.
- Memory in children with temporal lobe epilepsy is at least partially explained by executive dysfunction(2012) RZEZAK, Patricia; GUIMARAES, Catarina A.; FUENTES, Daniel; GUERREIRO, Marilisa M.; VALENTE, Kette D.An association between memory and executive dysfunction (ED) has been demonstrated in patients with mixed neurological disorders. We aimed to investigate the impact of ED in memory tasks of children with temporal lobe epilepsy (TLE). We evaluated 36 children with TLE and 28 controls with tests for memory, learning, attention, mental flexibility, and mental tracking. Data analysis was composed of comparison between patients and controls in memory and executive function; correlation between memory and executive function tests; and comparison between patients with mild and severe ED in memory tests. Children with TLE had worse performance in focused attention, immediate and delayed recall, phonological memory, mental tracking, planning, and abstraction. Planning, abstraction, and mental tracking were correlated with visual and verbal memory. Children with severe ED had worse performance in verbal and visual memory and learning tests. This study showed that ED was related to memory performance in children with TLE.
- Epilepsy & Behavior: Congratulations on your ""sweet fifteen""(2014) VALENTE, Kette D.
- Genetic polymorphisms of the 5HT receptors are not related with depression in temporal lobe epilepsy caused by hippocampal sclerosis(2018) VINCENTIIS, Silvia; ALCANTARA, Juliana; RZEZAK, Patricia; KERR, Daniel S.; GATTAZ, Wagner F.; LINDEN JR., Helio van der; SANTOS, Bernardo dos; MELO-SOUZA, Sebastiao E.; ARRUDA, Francisco; RAGAZZO, Paulo; CHAIM-AVANCINI, Tiffany; SERPA, Mauricio H.; FERNANDES, Fernando; MORENO, Ricardo A.; BUSATTO, Geraldo; ALESSI, Ruda; DEMARQUE, Renata; VALENTE, Kette D.Background: Temporal lobe epilepsy caused by hippocampal sclerosis (TLE-HS) is the most frequent form of drug-resistant epilepsy in adults. Mood disorders are the most frequent psychiatric comorbidities observed in these patients. Common pathophysiological mechanisms of epilepsy and psychiatric comorbidities include abnormalities in the serotonin pathway. The primary goal of this study was to determine the possible association between polymorphisms of genes encoding the serotonin receptors 5HT1A (rs6295), 5HT1B (rs6296), and 5HT2C (rs6318) and the presence of mood disorders in patients with TLE-HS. Our secondary goal was to evaluate the possible association between these variants and susceptibility to develop seizures in TLE-HS. Methods: We assessed 119 patients with TLE-HS, with and without psychiatric comorbidities; 146 patients with major depressive disorder; and 113 healthy volunteers. Individuals were genotyped for the rs6295, rs6296, and rs6318 polymorphisms. Results: No difference was observed between the group with TLE-HS, healthy controls, and the group with major depressive disorder without epilepsy regarding the polymorphisms that were evaluated. There was no correlation between rs6318, rs6295, rs6296, and epilepsy-related factors and history of psychiatric comorbidities. Conclusions: Our work suggests that the studied polymorphisms were not related to the presence of TLE, psychiatric comorbidities in TLE, and epilepsy-related factors.
- Episodic and semantic memory in children with mesial temporal sclerosis(2011) RZEZAK, Patricia; GUIMARAES, Catarina; FUENTES, Daniel; GUERREIRO, Marilisa M.; VALENTE, Kette Dualibi RamosThe aim of this study was to analyze semantic and episodic memory deficits in children with mesial temporal sclerosis (MTS) and their correlation with clinical epilepsy variables. For this purpose, 19 consecutive children and adolescents with MTS (8 to 16 years old) were evaluated and their performance on five episodic memory tests (short- and long-term memory and learning) and four semantic memory tests was compared with that of 28 healthy volunteers. Patients performed worse on tests of immediate and delayed verbal episodic memory, visual episodic memory, verbal and visual learning, mental scanning for semantic clues, object naming, word definition, and repetition of sentences. Clinical variables such as early age at seizure onset, severity of epilepsy, and polytherapy impaired distinct types of memory. These data confirm that children with MTS have episodic memory deficits and add new information on semantic memory. The data also demonstrate that clinical variables contribute differently to episodic and semantic memory performance.
- The relevance of attention deficit hyperactivity disorder in self-limited childhood epilepsy with centrotemporal spikes(2018) LIMA, Ellen Marise; RZEZAK, Patricia; SANTOS, Bernardo dos; GENTIL, Leticia; MONTENEGRO, Maria A.; GUERREIRO, Marilisa M.; VALENTE, Kette D.In this study, we aimed to evaluate the attentional and executive functions in patients with benign childhood epilepsy with centrotemporal spikes (BCECTS) with and without attention-deficit hyperactivity disorder (ADHD) compared with controls and compared with patients with ADHD without epilepsy. We evaluated 12 patients with BCECTS and ADHD (66.7% boys; mean age of 9.67 years); 11 children with non-ADHD BCECTS (63.6% boys; mean age of 11.91 years); 20 healthy children (75% boys; mean age of 10.15 years); and 20 subjects with ADHD without epilepsy (60% boys; mean age of 10.9 years). We used a comprehensive battery of neuropsychological tests to evaluate attentional and executive functions in their broad domains. Patients with BCECTS and ADHD had worse performance in Conners Continuous Performance Test II ( reaction time standard error [p = 0.008], variability [p = 0.033], perseverations [p = 0.044] and in reaction time interstimuli interval [p = 0.016]). Patients with ADHD showed worse performance in Trail Making Test B errors [p = 0.012]. In conclusion, patients with BCECTS and ADHD had worse executive and attentional performance compared with controls than non-ADHD patients with BCECTS. Regardless of the presence of epilepsy, ADHD also negatively impacted executive and attentional functions but in different executive subdomains compared with patients with epilepsy.
- Letter to Steve: Thank you for your devotion and dedication over the past 20 years(2022) VALENTE, Kette D.
- Dravet syndrome, SUDEP, and omega-3 fatty acids: Lessons from the past, learning of the present, and perspectives for the future(2017) SCORZA, Fulvio A.; SCORZA, Carla A.; VALENTE, Kette D.