Journal article

Impaired olfactory ability associated with larger left hippocampus and rectus volumes at earliest stages of schizophrenia: A sign of neuroinflammation?

Yuri Masaoka, Dennis Velakoulis, Warrick J Brewer, Vanessa L Cropley, Cali F Bartholomeusz, Alison R Yung, Barnaby Nelson, Dominic Dwyer, Cassandra MJ Wannan, Masahiko Izumizaki, Patrick D McGorry, Stephen J Wood, Christos Pantelis

Psychiatry Research | Published : 2020

Abstract

Impaired olfactory identification has been reported as a first sign of schizophrenia during the earliest stages of illness, including before illness onset. The aim of this study was to examine the relationship between volumes of these regions (amygdala, hippocampus, gyrus rectus and orbitofrontal cortex) and olfactory ability in three groups of participants: healthy control participants (Ctls), patients with first-episode schizophrenia (FE-Scz) and chronic schizophrenia patients (Scz). Exploratory analyses were performed in a sample of individuals at ultra-high risk (UHR) for psychosis in a co-submission paper (Masaoka et al., 2020). The relationship to brain structural measures was not appa..

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