Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Ruben Nachar"'
Autor:
Ángeles Tepper, Javiera Vásquez Núñez, Juan Pablo Ramirez-Mahaluf, Juan Manuel Aguirre, Daniella Barbagelata, Elisa Maldonado, Camila Díaz Dellarossa, Ruben Nachar, Alfonso González-Valderrama, Juan Undurraga, Joaquín Goñi, Nicolás Crossley
Publikováno v:
NeuroImage: Clinical, Vol 38, Iss , Pp 103391- (2023)
Patients with Schizophrenia may show different clinical presentations, not only regarding inter-individual comparisons but also in one specific subject over time. In fMRI studies, functional connectomes have been shown to carry valuable individual le
Externí odkaz:
https://doaj.org/article/4df178f741204cccbb50b8c34fb1acd0
Autor:
Juan P Ramirez-Mahaluf, Ángeles Tepper, Luz Maria Alliende, Carlos Mena, Carmen Paz Castañeda, Barbara Iruretagoyena, Ruben Nachar, Francisco Reyes-Madrigal, Pablo León-Ortiz, Ricardo Mora-Durán, Tomas Ossandon, Alfonso Gonzalez-Valderrama, Juan Undurraga, Camilo de la Fuente-Sandoval, Nicolas A Crossley
Publikováno v:
Schizophrenia Bulletin. 49:706-716
Background and Hypothesis Abnormal functional connectivity between brain regions is a consistent finding in schizophrenia, including functional magnetic resonance imaging (fMRI) studies. Recent studies have highlighted that connectivity changes in ti
Autor:
Raphael O. Cerqueira, Carolina Ziebold, Daniel Cavalcante, Giovany Oliveira, Javiera Vásquez, Juan Undurraga, Alfonso González-Valderrama, Ruben Nachar, Carlos Lopez-Jaramillo, Cristiano Noto, Nicolas Crossley, Ary Gadelha
Publikováno v:
Journal of Affective Disorders. 316:83-90
Psychosis presentation can be affected by genetic and environmental factors. Differentiating between affective and non-affective psychosis (A-FEP and NA-FEP, respectively) may influence treatment decisions and clinical outcomes. The objective of this
Autor:
Marisleydis García Saborit, Alejandro Jara, Néstor Muñoz, Carlos Milovic, Angeles Tepper, Luz María Alliende, Carlos Mena, Bárbara Iruretagoyena, Juan Pablo Ramirez-Mahaluf, Camila Diaz, Ruben Nachar, Carmen Paz Castañeda, Alfonso González, Juan Undurraga, Nicolas Crossley, Cristian Tejos
Publikováno v:
Schizophrenia Bulletin.
Background Psychosis is related to neurochemical changes in deep-brain nuclei, particularly suggesting dopamine dysfunctions. We used an magnetic resonance imaging-based technique called quantitative susceptibility mapping (QSM) to study these region
Autor:
Ángeles Tepper, Analía Cuiza, Luz María Alliende, Carlos Mena, Juan Pablo Ramirez-Mahaluf, Barbara Iruretagoyena, Claudia Ornstein, Rosemarie Fritsch, Ruben Nachar, Alfonso González-Valderrama, Juan Undurraga, Juan Pablo Cruz, Cristian Tejos, Alex Fornito, Gabriela Repetto, Nicolas Crossley
Publikováno v:
Schizophr Bull
22q11.2 deletion syndrome (22q11.2DS) is a genetic neurodevelopmental disorder that represents one of the greatest known risk factors for psychosis. Previous studies in psychotic subjects without the deletion have identified a dopaminergic dysfunctio
Autor:
Ary Gadelha, Luz Maria Alliende, Salvador M. Guinjoan, Pablo León-Ortiz, Juan P. Ramirez-Mahaluf, Ramiro Reckziegel, Alfonso Gonzalez-Valderrama, Juan Undurraga, Carlos López-Jaramillo, Tomás Ossandón, Carmen Paz Castañeda, Cristiano Noto, Andrea Parolin Jackowski, Camilo de la Fuente-Sandoval, Julian A Pineda-Zapata, Mariana N. Castro, Ana M. Díaz-Zuluaga, Letícia Sanguinetti Czepielewski, Nicolas Crossley, André Zugman, Clarissa Severino Gama, Francisco Reyes-Madrigal, Rodrigo A. Bressan, Barbara Iruretagoyena, Ruben Nachar
Publikováno v:
The British Journal of Psychiatry. 218:112-118
SummaryBackgroundSocial and environmental factors such as poverty or violence modulate the risk and course of schizophrenia. However, how they affect the brain in patients with psychosis remains unclear.AimsWe studied how environmental factors are re
Autor:
Juan Undurraga, Mariana N. Castro, Ary Gadelha, Luz Maria Alliende, Marisa Crivelaro, Álvaro I. Langer, Ruben Nachar, Cristián Montes, Francisco Reyes-Madrigal, Carlos López-Jaramillo, Raffael Massuda, Camilo de la Fuente-Sandoval, Ana Olivia Fonseca, Letícia Sanguinetti Czepielewski, Salvador M. Guinjoan, Clarissa Severino Gama, Rodrigo A. Bressan, Mario Rodrigues Louzã, Alfonso Gonzalez-Valderrama, Johanna Valencia-Echeverry, Hernán Silva, Rodrigo Nieto, Rodolfo Solís-Vivanco, Nicolas Crossley, Carmen Paz Castañeda, Rocío Mayol-Troncoso, Arthur A. Berberian, Ana M. Díaz-Zuluaga, Carlos Schmidt
Publikováno v:
Psychological medicine. 52(11)
BackgroundCognition heavily relies on social determinants and genetic background. Latin America comprises approximately 8% of the global population and faces unique challenges, many derived from specific demographic and socioeconomic variables, such
Autor:
Juan P. Ramirez-Mahaluf, James H. MacCabe, Alfonso Gonzalez-Valderrama, Barbara Iruretagoyena, Ruben Nachar, Cristian Mena, Camila Diaz, Nicolas Crossley, Juan Undurraga, Carmen Paz Castañeda
Publikováno v:
Iruretagoyena, B, Castañeda, C P, Mena, C, Diaz, C, Nachar, R, Ramirez-Mahaluf, J P, González-Valderrama, A, Undurraga, J, Maccabe, J H & Crossley, N A 2021, ' Predictors of clozapine discontinuation at 2 years in treatment-resistant schizophrenia ', Schizophrenia Research, vol. 235, pp. 102-108 . https://doi.org/10.1016/j.schres.2021.07.024
Introduction Little is known about predictors of clinical response to clozapine treatment in treatment-resistant psychosis. Most published cohorts are small, providing inconsistent results. We aimed to identify baseline clinical predictors of future
Autor:
Alfonso Gonzalez-Valderrama, Juan P. Ramirez-Mahaluf, Juan Undurraga, Camila Diaz, Nicolas Crossley, Barbara Iruretagoyena, Carlos Gallardo, Carmen Paz Castañeda, Luz Maria Alliende, Ruben Nachar, Felipe Mancilla, Cristian Mena
Publikováno v:
Revista médica de Chile v.148 n.11 2020
SciELO Chile
CONICYT Chile
instacron:CONICYT
SciELO Chile
CONICYT Chile
instacron:CONICYT
Background: Cannabis use among young people in Chile has increased significantly in the last years. There is a consistent link between cannabis and psychosis. Aim: To compare cannabis use in patients with a first episode of psychosis and healthy cont
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e28cc487f70469221fd1e6ca8736a6bf
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872020001101606
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872020001101606
Autor:
Matías Monje, Barbara Iruretagoyena, Cristian Mena, Carmen Paz Castañeda, James B. Kirkbride, Ruben Nachar, Cynthia Zavala, Matías Irarrázaval, Lucia Valmaggia, Nicolas Crossley, Carlos Gallardo, Juan Undurraga, Alfonso Gonzalez-Valderrama, David Aceituno, Hannah E. Jongsma, Pilar Mondaca
Publikováno v:
Psychological medicine. 52(5)
BackgroundEvidence suggests the incidence of non-affective psychotic disorders (NAPDs) varies across persons and places, but data from the Global South is scarce. We aimed to estimate the treated incidence of NAPD in Chile, and variance by person, pl