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Journal of Psychopharmacology
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0269881106060512v1
20/5/656    most recent
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Article

Plasma oxytocin levels in depression and their correlation with the temperament dimension of reward dependence

Caroline J. Bell1*, Helen Nicholson2, Roger T. Mulder1, Sue E. Luty1, Peter R Joyce1

1 Department of Psychological Medicine, Christchurch School of Medicine and Health Sciences, Christchurch, New Zealand
2 Anatomy and Structural Biology, Health Sciences, Otago School of Medical Sciences, Dunedin, New Zealand

* To whom correspondence should be addressed.


  Abstract
Evidence suggests that the neuropeptide oxytocin plays a role in social affiliation. This behaviour may be related more to personality dimensions than specific psychiatric diagnoses. This study investigated the relationship between plasma oxytocin levels and personality dimensions using the Temperament and Character Inventory (TCI) in 60 outpatients with major depression. The strongest correlation was between plasma oxytocin levels and the temperament dimension of Reward Dependence (0.425 Pearson correlation). This suggested that 17% of the variance in plasma oxytocin levels was explained by the Reward Dependence scores. There was a significant positive correlation between plasma oxytocin levels and the Reward Dependence personality dimension.

Key Words: oxytocin, depression, reward dependence, personality dimensions

First published on January 9, 2006, doi:10.1177/0269881106060512

Journal of Psychopharmacology 2006;20:656.

A more recent version of this article appeared on September 1, 2006

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