1
|
Murillo-García N, Papiol S, Fernández-Cacho LM, Fatjó-Vilas M, Ayesa-Arriola R. Studying the relationship between intelligence quotient and schizophrenia polygenic scores in a family design with first-episode psychosis population. Eur Psychiatry 2024; 67:e31. [PMID: 38465374 PMCID: PMC11059248 DOI: 10.1192/j.eurpsy.2024.24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 02/22/2024] [Accepted: 02/23/2024] [Indexed: 03/12/2024] Open
Abstract
BACKGROUND The intelligence quotient (IQ) of patients with first-episode psychosis (FEP) and their unaffected relatives may be related to the genetic burden of schizophrenia (SCZ). The polygenic score approach can be useful for testing this question. AIM To assess the contribution of the polygenic risk scores for SCZ (PGS-SCZ) and polygenic scores for IQ (PGS-IQ) to the individual IQ and its difference from the mean IQ of the family (named family-IQ) through a family-based design in an FEP sample. METHODS The PAFIP-FAMILIES sample (Spain) consists of 122 FEP patients, 131 parents, 94 siblings, and 176 controls. They all completed the WAIS Vocabulary subtest for IQ estimation and provided a DNA sample. We calculated PGS-SCZ and PGS-IQ using the continuous shrinkage method. To account for relatedness in our sample, we performed linear mixed models. We controlled for covariates potentially related to IQ, including age, years of education, sex, and ancestry principal components. RESULTS FEP patients significantly deviated from their family-IQ. FEP patients had higher PGS-SCZ than other groups, whereas the relatives had intermediate scores between patients and controls. PGS-IQ did not differ between groups. PGS-SCZ significantly predicted the deviation from family-IQ, whereas PGS-IQ significantly predicted individual IQ. CONCLUSIONS PGS-SCZ discriminated between different levels of genetic risk for the disorder and was specifically related to patients' lower IQ in relation to family-IQ. The genetic background of the disorder may affect neurocognition through complex pathological processes interacting with environmental factors that prevent the individual from reaching their familial cognitive potential.
Collapse
Affiliation(s)
- Nancy Murillo-García
- Research Group on Mental Illnesses, Valdecilla Biomedical Research (IDIVAL), Santander, Spain
- Department of Molecular Biology, School of Medicine, University of Cantabria, Santander, Spain
| | - Sergi Papiol
- Department of Falkai, Max Planck Institute of Psychiatry,Munich, Germany
- Biomedical Research Networking Center for Mental Health (CIBERSAM), Health Institute Carlos III, Madrid, Spain
| | - Luis Manuel Fernández-Cacho
- Department of Radiology, Marqués de Valdecilla University Hospital, Santander, Spain
- Faculty of Nursing, University of Cantabria, Santander, Spain
| | - Mar Fatjó-Vilas
- Biomedical Research Networking Center for Mental Health (CIBERSAM), Health Institute Carlos III, Madrid, Spain
- FIDMAG Sisters Hospitallers Research Foundation, Barcelona, Spain
- Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain
| | - Rosa Ayesa-Arriola
- Research Group on Mental Illnesses, Valdecilla Biomedical Research (IDIVAL), Santander, Spain
- Department of Molecular Biology, School of Medicine, University of Cantabria, Santander, Spain
- Biomedical Research Networking Center for Mental Health (CIBERSAM), Health Institute Carlos III, Madrid, Spain
| |
Collapse
|
2
|
Amoretti S, Anmella G, Bernardo M, Alfonso M, Hernandez C, García-Portilla MP, González-Blanco L, Safont G, Garrido I, Sanchez-Autet M, Arranz B. Impact of cognitive reserve in clinical, neurocognitive and lifestyle factors in chronic schizophrenia and early stages of schizophrenia. SPANISH JOURNAL OF PSYCHIATRY AND MENTAL HEALTH 2024:S2950-2853(24)00010-3. [PMID: 38218376 DOI: 10.1016/j.sjpmh.2024.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 12/20/2023] [Accepted: 01/09/2024] [Indexed: 01/15/2024]
Abstract
INTRODUCTION Although there is evidence that higher cognitive reserve (CR) is a protective factor and it has been related to better prognosis, there have been no studies to date that have explored the CR level and its impact in clinical, neurocognitive and lifestyle outcomes according to the stage of the disease: early stage of psychosis (ESP) or chronic schizophrenia (SCZ). MATERIAL AND METHODS A total of 60 patients in the ESP and 225 patients with SCZ were enrolled in the study. To test the predictive capacity of CR for each diagnostic group, a logistic regression analysis was conducted. Hierarchical linear regression analyses were performed to explore the associations between CR and different outcomes. The mediation analyses were performed according to the principles of Baron and Kenny. RESULTS Patients with SCZ showed lower CR than those in the ESP (p<0.001). CR correctly classified 79.6% of the cases (p<0.001; Exp(B)=1.062). In ESP group, CR was related to working memory (p=0.030) and negative symptoms (p=0.027). CR (t=3.925, p<0.001) and cannabis use (t=2.023, p=0.048) explained 26.7% of the variance on functioning (p=0.003). In patients with SCZ, CR predicted all cognitive domains, negative symptoms (R2=0.091, p=0.001) and functioning (R2=0.074, p=0.005). In both ESP and SCZ groups, higher CR was associated with lower body mass index and circumference. In ESP group, the effect of adherence to Mediterranean diet on functioning (p=0.037) was mediated by CR level (p=0.003). CONCLUSIONS The implications of CR depend on the stage of the disease (ESP vs. SCZ), with a greater effect on neurocognition and negative symptoms in patients with chronic SCZ.
Collapse
Affiliation(s)
- Silvia Amoretti
- Group of Psychiatry, Mental Health and Addictions, Vall d'Hebron Research Institute (VHIR), Barcelona, Catalonia, Spain; Psychiatric Genetics Unit, Vall d'Hebron Research Institute (VHIR), Biomedical Research Networking Center for Mental Health Network (CIBERSAM), ISCIII, Barcelona, Catalonia, Spain; Departament de Medicina, Institut de Neurociències (UBNeuro), Barcelona Clinic Schizophrenia Unit, Hospital Clínic de Barcelona, Institut de Neurociències (UBNeuro), Institut d'Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Universitat de Barcelona (UB), Barcelona, Spain; Departament de Medicina, Facultat de Medicina i Ciències de la Salut, Institute of Neurosciences (UBNeuro), Bipolar and Depressive Disorders Unit, Hospital Clinic de Barcelona, Universitat de Barcelona (UB), Barcelona, Spain; Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Instituto de Salud Carlos III, Madrid, Spain
| | - Gerard Anmella
- Departament de Medicina, Facultat de Medicina i Ciències de la Salut, Institute of Neurosciences (UBNeuro), Bipolar and Depressive Disorders Unit, Hospital Clinic de Barcelona, Universitat de Barcelona (UB), Barcelona, Spain; Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Instituto de Salud Carlos III, Madrid, Spain
| | - Miquel Bernardo
- Departament de Medicina, Institut de Neurociències (UBNeuro), Barcelona Clinic Schizophrenia Unit, Hospital Clínic de Barcelona, Institut de Neurociències (UBNeuro), Institut d'Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Universitat de Barcelona (UB), Barcelona, Spain.
| | - Miqueu Alfonso
- Parc Sanitari Sant Joan de Deu, CIBERSAM, Barcelona, Spain
| | | | - María Paz García-Portilla
- Department of Psychiatry, Universidad de Oviedo, Spain; CIBERSAM, Oviedo, Spain; Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain; Instituto Universitario de Neurociencias del Principado de Asturias (INEUROPA), Oviedo, Spain; Servicio de Salud del Principado de Asturias (SESPA), Oviedo, Spain
| | - Leticia González-Blanco
- Department of Psychiatry, Universidad de Oviedo, Spain; CIBERSAM, Oviedo, Spain; Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain; Instituto Universitario de Neurociencias del Principado de Asturias (INEUROPA), Oviedo, Spain; Servicio de Salud del Principado de Asturias (SESPA), Oviedo, Spain
| | - Gemma Safont
- Hospital Universitari Mútua Terrassa, CIBERSAM, Spain
| | | | | | - Belén Arranz
- Parc Sanitari Sant Joan de Deu, CIBERSAM, Barcelona, Spain
| |
Collapse
|
3
|
Murillo-García N, Díaz-Pons A, Fernández-Cacho LM, Miguel-Corredera M, Martínez-Barrio S, Ortiz-García de la Foz V, Neergaard K, Ayesa-Arriola R. A family study on first episode of psychosis patients: Exploring neuropsychological performance as an endophenotype. Acta Psychiatr Scand 2022; 145:384-396. [PMID: 35080005 DOI: 10.1111/acps.13404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 01/14/2022] [Accepted: 01/23/2022] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Family studies provide a suitable approach to analyzing candidate endophenotypes of schizophrenia, including cognitive features. OBJECTIVE To characterize different neurocognitive functions in a group of patients with first episode of psychosis (FEP), their first-degree relatives (parents and siblings), and healthy controls (HC), in order to identify potential endophenotypes for schizophrenia spectrum disorders (SSD). METHODS Participants were assessed in the context of a national project in Spain called PAFIP-FAMILIAS. They completed the same neuropsychological battery, which included tests of verbal memory, visual memory, processing speed, working memory, executive functions, motor dexterity, attention, and theory of mind. Group comparisons were performed using one-way ANOVA, followed by tests of multiple comparisons when appropriate. RESULTS One hundred thirty-three FEP patients were included, as well as 244 of their first-degree relatives (146 parents and 98 siblings) and 202 HC. In general, relatives showed an intermediate performance between the HC and the FEP patients in all neurocognitive domains. However, the domains of executive functions and attention stood out, as relatives (especially parents) showed similar performance to FEP patients. This was replicated when selecting patients subsequently diagnosed with schizophrenia and their relatives. CONCLUSION These findings suggest that executive and attention dysfunctions might have a family aggregation and could be relevant cognitive endophenotypes for psychotic disorders. The study shows the potential of exploring intra-family neuropsychological performance supporting neurobiological and genetic research in SSD.
Collapse
Affiliation(s)
- Nancy Murillo-García
- Department of Psychiatry, Valdecilla Biomedical Research Institute, Santander, Spain.,Department of Molecular Biology, Faculty of Medicine, University of Cantabria, Santander, Spain
| | - Alexandre Díaz-Pons
- Department of Psychiatry, Valdecilla Biomedical Research Institute, Santander, Spain.,Faculty of Psychology, National University of Distance Education (UNED), Madrid, Spain
| | - Luis Manuel Fernández-Cacho
- Department of Psychiatry, Valdecilla Biomedical Research Institute, Santander, Spain.,Department of Radiology, Marqués de Valdecilla University Hospital, Santander, Spain.,Faculty of Nursing, University of Cantabria, Santander, Spain
| | | | - Sara Martínez-Barrio
- Department of Psychiatry, Valdecilla Biomedical Research Institute, Santander, Spain.,Faculty of Psychology, University Complutense of Madrid, Madrid, Spain
| | - Víctor Ortiz-García de la Foz
- Department of Psychiatry, Valdecilla Biomedical Research Institute, Santander, Spain.,Biomedical Research Networking Center for Mental Health (CIBERSAM), Madrid, Spain
| | - Karl Neergaard
- Department of Psychiatry, Valdecilla Biomedical Research Institute, Santander, Spain
| | - Rosa Ayesa-Arriola
- Department of Psychiatry, Valdecilla Biomedical Research Institute, Santander, Spain.,Department of Molecular Biology, Faculty of Medicine, University of Cantabria, Santander, Spain.,Faculty of Psychology, National University of Distance Education (UNED), Madrid, Spain.,Biomedical Research Networking Center for Mental Health (CIBERSAM), Madrid, Spain
| |
Collapse
|