期刊
SCHIZOPHRENIA RESEARCH
卷 162, 期 1-3, 页码 57-61出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.schres.2014.12.023
关键词
Oxytocin; Olfaction; Emotion; Hedonic; Negative symptoms; Psychosis
类别
资金
- US National Institutes of Mental Health [P50-MH082999]
- Department of Veterans Affairs Mental Illness Research Education Clinical Centers VISN 5 pilot grant
Basic neuroscience research provides strong evidence for the role of oxytocin in olfactory processes and social affiliation in rodents. Given prior indication of olfactory impairments that are linked to greater severity of asociality in schizophrenia, we examined the association between plasma oxytocin levels and measures of olfaction and social outcome in a sample of outpatients with schizophrenia (n = 39) and demographically matched healthy controls (n = 21). Participants completed the 40-item University of Pennsylvania Smell Identification Test (UPSIT), and rated each odor for how positive and how negative it made them feel. Results indicated that individuals with schizophrenia had higher plasma oxytocin levels and lower overall accuracy for UPSIT items than controls. Individuals with schizophrenia also reported experiencing more negative emotionality than controls in response to the olfactory stimuli. Lower plasma oxytocin levels were associated with poorer accuracy for pleasant and unpleasant odors and greater severity of asociality in individuals with schizophrenia. These findings suggest that endogenous oxytocin levels may be an important predictor of olfactory identification deficits and negative symptoms in schizophrenia. (C) 2015 Elsevier B.V. All rights reserved.
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