TY - JOUR
T1 - Gray and white matter changes and their relation to illness trajectory in first episode psychosis
AU - Keymer-Gausset, Alejandro
AU - Alonso-Solís, Anna
AU - Corripio, Iluminada
AU - Sauras-Quetcuti, Rosa B.
AU - Pomarol-Clotet, Edith
AU - Canales-Rodriguez, Erick J.
AU - Grasa-Bello, Eva
AU - Álvarez, Enric
AU - Portella, Maria J.
PY - 2018/3/1
Y1 - 2018/3/1
N2 - © 2018 Elsevier B.V. and ECNP Previous works have studied structural brain characteristics in first-episode psychosis (FEP), but few have focused on the relation between brain differences and illness trajectories. The aim of this study is to analyze gray and white matter changes in FEP patients and their relation with one-year clinical outcomes. A sample of 41 FEP patients and 41 healthy controls (HC), matched by age and educational level was scanned with a 3 T MRI during the first month of illness onset. One year later, patients were assigned to two illness trajectories (schizophrenia and non-schizophrenia). Voxel-based morphometry (VBM) was used for gray matter and Tract-based spatial statistics (TBSS) was used for white matter data analysis. VBM revealed significant and widespread bilateral gray matter density differences between FEP and HC groups in areas that included the right insular Cortex, the inferior frontal gyrus and orbito-frontal cortices, and segments of the occipital cortex. TBSS showed a significant lower fractional anisotropy (FA) in 8 clusters that included segments of the anterior thalamic radiation, the left body and forceps minor of corpus callosum, the right anterior segment of the inferior fronto-occipital fasciculus and the anterior segments of the cingulum. The sub-groups comparison revealed significant lower FA in the schizophrenia sub-group in two clusters: the anterior thalamic radiation and the anterior segment of left cingulum. These findings are coherent with previous morphology studies. The results suggest that gray and white matter abnormalities are present at early stages of the disease, and white matter differences may distinguish different illness prognosis.
AB - © 2018 Elsevier B.V. and ECNP Previous works have studied structural brain characteristics in first-episode psychosis (FEP), but few have focused on the relation between brain differences and illness trajectories. The aim of this study is to analyze gray and white matter changes in FEP patients and their relation with one-year clinical outcomes. A sample of 41 FEP patients and 41 healthy controls (HC), matched by age and educational level was scanned with a 3 T MRI during the first month of illness onset. One year later, patients were assigned to two illness trajectories (schizophrenia and non-schizophrenia). Voxel-based morphometry (VBM) was used for gray matter and Tract-based spatial statistics (TBSS) was used for white matter data analysis. VBM revealed significant and widespread bilateral gray matter density differences between FEP and HC groups in areas that included the right insular Cortex, the inferior frontal gyrus and orbito-frontal cortices, and segments of the occipital cortex. TBSS showed a significant lower fractional anisotropy (FA) in 8 clusters that included segments of the anterior thalamic radiation, the left body and forceps minor of corpus callosum, the right anterior segment of the inferior fronto-occipital fasciculus and the anterior segments of the cingulum. The sub-groups comparison revealed significant lower FA in the schizophrenia sub-group in two clusters: the anterior thalamic radiation and the anterior segment of left cingulum. These findings are coherent with previous morphology studies. The results suggest that gray and white matter abnormalities are present at early stages of the disease, and white matter differences may distinguish different illness prognosis.
KW - First episode psychosis
KW - Fractional anisotropy
KW - Gray matter
KW - Neuroimaging
KW - Prognosis
KW - Schizophrenia
KW - White matter
U2 - 10.1016/j.euroneuro.2017.12.117
DO - 10.1016/j.euroneuro.2017.12.117
M3 - Article
SN - 0924-977X
VL - 28
SP - 392
EP - 400
JO - European Neuropsychopharmacology
JF - European Neuropsychopharmacology
IS - 3
ER -