0000000000256423
AUTHOR
Gabriel Selva
Bipolar I patients with and without a history of psychotic symptoms: do they differ in their cognitive functioning?
Abstract Recently, many reports have consistently demonstrated cognitive deficits in patients with bipolar disorder (BD), but their relationship with symptomatology, specifically psychotic symptoms, remains unclear. Our main hypothesis was that a history of hallucinations and/or delusions in the course of BD-I is associated with severe cognitive deficits. We investigated several cognitive functions (memory, attention, verbal fluency and executive functions) in 18 BD-I patients with a history of psychotic symptoms (HPS+), 17 BD-I patients without a history of psychotic symptoms (HPS−), 33 schizophrenic patients and 26 healthy control subjects. Both groups of BD-I patients were more impaired …
Similar effect of family history of psychosis on Sylvian fissure size and auditory P200 amplitude in schizophrenic and bipolar subjects.
Several cerebral studies point to the non-specificity of structural and functional changes described in schizophrenia and bipolar disorders. Furthermore, the origin of these changes is still unclear. The present study investigated the effect of a family history (FH) of psychotic disorders in first-degree relatives on computed tomographic (CT) measures (ventricular, cerebral and Sylvian fissure size) and auditory event-related potentials (amplitudes and latencies of peak components in oddball paradigms) in 30 schizophrenic patients and 24 bipolar type I patients. We found a significant correlation between FH and the size of the right Sylvian fissure, and between FH and auditory P200 amplitud…
Evidence for association between structural variants in lissencephaly-related genes and executive deficits in schizophrenia or bipolar patients from a Spanish isolate population.
There is evidence for an association between structural variants in genes for lissencephaly, which are involved in neuronal migration, and prefrontal cognitive deficits in schizophrenia and bipolar patients. On the basis of these intriguing findings, we analyzed 16 markers located in the lissencephaly critical region (LCR in chromosome 17p13.3) in 124 schizophrenic, 56 bipolar, and 141 healthy individuals. All recruits were from a Spanish population isolate of Basque origin that is characterized by low genetic heterogeneity. In addition, we examined whether structural genomic variations in the LCR were associated with executive cognition. Twenty-three patients (12.8%), but none of the contr…
Smoking and neurocognition in schizophrenia and bipolar disorder
IntroductionSeveral studies have suggested that nicotine could have beneficial effects on cognitive functioning.ObjectiveTo explore the association between smoking and cognitive functioning in bipolar disorder and schizophrenia.MethodsObservational study. We analyzed data from 184 participants in 3 groups (61 healthy controls, 47 euthymic patients with bipolar-I disorder, 76 patients with clinically stable schizophrenia) assessed by a neuropsychological battery. Statistical analysis was performed comparing subgroups of smokers and non-smokers data. Both groups were demographic and clinically comparable.ResultsSmoking rate was higher in participants with bipolar disorder and schizophrenia (X…
Influence of social cognition as a mediator between cognitive reserve and psychosocial functioning in patients with first episode psychosis
This work was supported by the Carlos III Institute of Health and European Fund for Regional Development (PI08/1213, PI11/01977, PI14/01900, PI08/01026, PI11/02831, PI14/01621, PI08/1161, PI16/00359, PI16/01164, PI18/00805), the Basque Foundation for Health Innovation and Research (BIOEF), the Secretaria d´Universitats I Recerca del Departament d´Economia I Coneixement (2017 SGR 1365), and R&D activities in Biomedicine, Madrid Regional Government and Structural Funds of the European Union (S2017/BMD-3740 (AGES-CM 2-CM)).
Neurocognition in bipolar disorders—A closer look at comorbidities and medications
The last decade has witnessed a growing interest in the neuropsychological study of bipolar disorder (BD). This chronic mood disorder is associated with persistent neurocognitive impairments even during periods of euthymia, particularly in the broad domains of attention, verbal memory and executive functions. More interestingly, cognitive dysfunction seems to predict a poorer functional outcome among BD patients and thus represents an important target for future therapies. The aetiology of cognitive dysfunction is probably multifactorial, including gene-environment interactions with potentially confounding variables as well. Drug-induced cognitive adverse effects represent an important and …
Variations in genes regulating neuronal migration predict reduced prefrontal cognition in schizophrenia and bipolar subjects from mediterranean Spain: A preliminary study
Both neural development and prefrontal cortex function are known to be abnormal in schizophrenia and bipolar disorder. In order to test the hypothesis that these features may be related with genes that regulate neuronal migration, we analyzed two genomic regions: the lissencephaly critical region (chromosome 17p) encompassing the LIS1 gene and which is involved in human lissencephaly; and the genes related to the platelet-activating-factor, functionally related to LIS1, in 52 schizophrenic patients, 36 bipolar I patients and 65 normal control subjects. In addition, all patients and the 25 control subjects completed a neuropsychological battery. Thirteen (14.8%) patients showed genetic varia…
Mutations in genes regulating neuronal migration predict reduced prefrontal cognition in schizophrenia and bipolar disorder: a preliminary study
El artículo se basa en la presentación de un póster en International Society on Brain and Behaviour: 2nd International Congress on Brain and Behaviour Thessaloniki, Greece. 17–20 November 2005