Objective To study the feature of brain functional in front gyrus,anterior cingulate cortex and hippocampus of patients with generalized anxiety disorder (GAD).Methods 19 patients with GAD and 20 healthy volunteers were scanned on brain using proton magnetic resonance spectroscopic imaging (1H-MRS).The levels of Choline (Cho),Creatine (Cr),N-acetyl-aspartate (NAA) were measured in the frontal gyrus,anterior cingulate cortex and hippocampus of all subjects.The 1H-MRS data were compared between two groups.Results Compared with the healthy matched control,the levels of Cho (7.22 ± 1.99),Cr (5.44 ± 1.68),NAA (12.09 ±2.30)in right frontal gyrus white matter,the levels of Cho(9.89 ±2.40),Cr(8.59 ± 1.71) in right anterior cingulate cortex and the levels of NAA in left anterior cingulate cortex were significantly high (P ＜ 0.05).The ratio of NAA/Cr and Cho/Cr were not difference in two groups.In the hippocampus of the patients,the Cho,Cr,NAA,NAA/Cr and Cho/Cr ratio were not significantly higher or lower than those in control (P ＞ 0.05).Conclusion The brain substance metabolisms of the patients with GAD are abnormal and asymmetrical between left and right brain,especially occurred in right brain.

Objective:To explore the relationship between anxiety and mental resilience of caregivers for community-dwelling dementia patients.Methods:Patients in four communities who met the diagnostic criteria for Alzheimer's disease(AD)were randomly selected and their caregivers served as study subjects.General characteristics, anxiety and resilience of caregivers(n=592)were investigated with a questionnaire developed by ourselves, the Generalized Anxiety Disorder-7 Scale(GAD-7), and the Conner-Davidson Resilience Scale(CDRISC).Results:There were 592 subjects in the study, with 185 cases(31.3%)having anxiety.Differences in manifestations of anxiety existed between caregivers for AD patients in different age groups( P<0.01). Anxiety levels were also influenced by AD patient caregivers' gender, educational level and blood relationship to the patient( P<0.05). The differences were reflected in tenacity( F=72.58), strength( F=82.19), optimism( F=12.57)and the total elasticity score( F=162.88). The Spearman correlation was used to analyze the association of caregiver anxiety with caregivers' general characteristics and domains of psychological resilience.The results showed that anxiety was negatively correlated with gender( r=-0.09, P<0.05), education level( r=-0.112, P<0.01), blood relationship( r=-0.122, P<0.01), psychoelasticity and three other domains( r=-0.457, -0.495, -0.208, -0.60, all P<0.01), but was positively correlated with age( r=0.127, P<0.01). Logistic regression analysis showed that psychoelasticity was a protective factor for anxiety in caregivers for community-dwelling AD patients( β=-0.323, P<0.05). Conclusions:While treating Alzheimer's patients, clinicians can consider psychotherapy measures to improve the psychological resilience of their caregivers.