Publications by authors named "Saeko Aizawa"

Background: Patients with social anxiety disorder (SAD) experience unusual fear in normal social situations. The verbal fluency task (VFT) was administered while subjects were undergoing near-infrared spectroscopy (NIRS) scanning. The purpose of VFT was to examine the functions of the frontal and temporal lobes.

View Article and Find Full Text PDF
Article Synopsis
  • Avoidant personality disorder (AVPD) is characterized by high anxiety and discomfort in social situations; this study aimed to examine how AVPD relates to physical and psychological stress and various psychological tests.
  • The research involved 93 AVPD patients and 355 nonpatient controls, measuring their stress responses through salivary amylase and cortisol levels during specific stress tests, along with administering several psychological assessments.
  • Findings revealed that female AVPD patients had lower cortisol responses to stress compared to controls, while AVPD patients generally showed significantly higher levels of anxiety, mood disturbance, and other psychological issues compared to nonpatients.
View Article and Find Full Text PDF

The present study was to investigate the effects of 6 FK506 binding protein 51 (FKBP5) single nucleotide polymorphisms (SNPs) on brain structure using voxel-based morphometry (VBM) and the psychological tests to psychological stress. We genotyped 112 healthy controls with respect to 6 SNPs (rs) of FKBP5. We examined the Beck Depression Inventory and the State (STAI-S) and Trait (STAI-T) versions of the Spielberger Anxiety Inventory and the Profile of Mood States (POMS) to evaluate mood.

View Article and Find Full Text PDF
Article Synopsis
  • Stress coping involves cognitive and behavioral efforts to manage stress through problem-focused and emotion-focused strategies, with genetic factors like BDNF and NTRK2 influencing these coping mechanisms.
  • A study of 252 participants found significant links between BDNF and various emotion-focused coping strategies, as well as between NTRK2 and cognitive problem-solving strategies.
  • The results suggest that genetic variations in BDNF and NTRK2 may contribute to how individuals handle stress and their personality traits.
View Article and Find Full Text PDF
Article Synopsis
  • Borderline personality disorder (BPD) is marked by emotional instability, tumultuous relationships, and issues with self-identity.
  • The study involved measuring stress hormone levels in BPD patients and comparing their psychological responses to those of a control group during stress tests.
  • Results showed that BPD patients exhibited significantly higher anxiety and depression levels and varying hormonal responses to stressors based on gender, indicating different stress response mechanisms among males and females.
View Article and Find Full Text PDF

Objective: The aim of the study was to evaluate the association of transmembrane protein 132D (TMEM132D), catechol-O-methyltransferase (COMT), and gamma-aminobutyric acid (GABA) receptor alpha 6 subunit (GABRA6) genotypes with cingulate, frontal cortex and hippocampal emotional processing in panic disorder (PD) and major depressive disorder (MDD).

Method: The single nucleotide polymorphisms (SNPs) in TMEM132D, COMT, and GABRA6 were examined in patients with MDD, PD, and healthy controls. Functional magnetic resonance imaging (fMRI) was performed in patients with MDD, PD, and healthy controls.

View Article and Find Full Text PDF

Background: Decreased expression of brain-derived neurotrophic factor (BDNF) is implicated in enhanced stress responses. The BDNF Val66Met polymorphism is associated with psychological changes; for example, carriers of the Met allele exhibit increased harm avoidance as well as a higher prevalence of depression and anxiety disorder.

Methods: To analyze the effects of BDNF Val66Met on stress responses, we tested 226 university students (88 women and 138 men) using a social stress procedure (Trier Social Stress Test [TSST]) and an electrical stimulation stress test.

View Article and Find Full Text PDF

A 73-year-old woman outpatient with mild cognitive impairment, parasomnia and depressive state with musical hallucinations failed to respond to 400 mg/day of valproate. Once she was admitted to a university hospital, her musical hallucinations partially responded to 1 mg/day of clonazepam and sufficiently improved on 100 mg/day of carbamazepine. Two months after discharge, however, her musical hallucinations recurred probably as a consequence of psychological stress.

View Article and Find Full Text PDF

Automatic thoughts may be risk factors for depression and anxiety, and should be detected early. However, the genetic basis of automatic thoughts remains unclear. This study aims to investigate the genetic association of automatic thoughts with SNPs (single nucleotide polymorphisms) involved in cognition, neurogenesis, neuronal cell structure, neurotransmitters, hypothalamus-pituitary adrenal axis and psychiatric illness.

View Article and Find Full Text PDF