Gender difference in relationship between anxiety-related personality traits and cerebral brain glucose metabolism

• Published in: Psychiatry research. Neuroimaging Vol. 173; no. 3; pp. 206 - 211
• Main Authors: Hakamata, Yuko, Iwase, Mikio, Iwata, Hiroshi, Kobayashi, Toshiki, Tamaki, Tsuneo, Nishio, Masami, Matsuda, Hiroshi, Ozaki, Norio, Inada, Toshiya
• Format: Journal Article
• Language: English
• Published: Shannon Elsevier Ireland Ltd 30.09.2009; Elsevier
• Subjects: Adult; Affectivity. Emotion; Aged; Anxiety; Anxiety - diagnostic imaging; Anxiety - metabolism; Anxiety - pathology; Anxiety - psychology; Biological and medical sciences; Brain Mapping; FDG-PET; Female; Fluorodeoxyglucose F18; Fundamental and applied biological sciences. Psychology; Glucose - metabolism; Healthy subjects; Humans; Magnetic Resonance Imaging - methods; Male; Middle Aged; Personality; Personality Assessment; Personality traits; Personality. Affectivity; Positron-Emission Tomography - methods; Prefrontal Cortex - metabolism; Psychiatry; Psychology. Psychoanalysis. Psychiatry; Psychology. Psychophysiology; Radiology; Sex Factors; Sex specificity; TCI; Temperament; FDG-PET; Healthy subjects; Anxiety; Sex specificity; TCI; Temperament; Radionuclide study; Human; Affect affectivity; Healthy subject; Central nervous system; Sex; Personality; Glucose; Metabolism; Encephalon; Positron emission tomography; Comparative study; Functional imaging; Emission tomography
• ISSN: 0925-4927; 1872-7506
• DOI: 10.1016/j.pscychresns.2008.10.002

Abstract Recent functional neuroimaging studies have suggested that specific brain regions might be associated with the formation of anxiety-related personality traits, which are well known to be influenced by gender. Such anxiety-related personality traits are one of the representative predisposing factors for mood and anxiety disorders, whose incidence is also known to be much influenced by gender. However, little is known about the gender differences in brain function related to anxiety-related personality traits. The aim of the present study was to examine gender-related differences in the pattern of the relationships between an anxiety-related personality trait and cerebral brain glucose metabolism. Regional brain glucose metabolism was measured using [18 F]fluorodeoxyglucose positron emission tomography in 102 healthy subjects (65 males and 37 females). An anxiety-related trait was assessed using the Temperament and Character Inventory dimension Harm Avoidance (HA). HA was negatively correlated with glucose metabolism in the anterior portion of the ventromedial prefrontal cortex (vmPFC) in females but not in males. The anterior vmPFC may be a possible neural target for the prevention or therapy of emotional disorders, especially in females.