Using quantitative imaging to determine the correlation between hypothalamic inflammation and anxiety and depression in young patients with obesity
2021
Background To investigate the incidence of anxiety and depressive disorders in young adults with obesity and the correlation between the severity of these disorders and hypothalamic inflammation. Methods The severity of anxiety and depressive disorders was assessed using the Self-Rating Anxiety Scale (SAS) and Self-Rating Depression Scale (SDS), respectively. Hypothalamic inflammation was evaluated by measuring the hypothalamus/amygdala (H/A) signal intensity (SI) ratio in T2-weighted phase quantitative magnetic resonance imaging (MRI). Results The incidence of depressive disorders in young (18-45 years) patients with obesity (n=66) was higher than that in the control group (n=44); anxiety disorder incidence did not differ significantly between groups. The bilateral H/A SI ratio in the obesity group was significantly higher than that in the control group. In the obesity group, there was no significant correlation between bilateral H/A SI ratio and body mass index (BMI) (right: r=-0.145, P=0.721; left: r=0.102, P=0.415) or SAS scores (right: r=-0.118, P=0.444; left: r=-0.295, P=0.052); SDS scores were significantly correlated with left H/A SI ratio (r=-0.353, P=0.019), but not right H/A SI ratio (r=-0.031, P=0.843). Conclusions Patients with obesity had a higher incidence of depressive disorders. Left hypothalamus inflammation may be one of the links between obesity and depressive disorders.
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