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Aging is a risk factor of human depression. Middle-aged or older men are vulnerable to adverse life events and an absence of social contact and easily become depressed. In the present study, we investigated the influence of aging on responses to life events in socially isolated conditions. We applied isolation-rearing (4 W) to two age groups, older (18 M)(More)
Isolation and acute environmental change are risk factors in human depression. In the present study, we investigated the differences in the brain monoamine activity of rats between two rearing conditions, isolated and group. Moreover, we examined the responses to novelty stress. Male F344 rats aged 11 weeks were divided into the above two groups. Four weeks(More)
Attention deficit-hyperactivity disorder (ADHD) has been noted for its high rate of comorbidity. The present study is the first report in Japan evaluating the proportion of comorbidity in ADHD cases presenting in the clinical setting, aiming at clarifying the picture of ADHD in Japan. The subjects consisted of 68 child and adolescent cases meeting criteria(More)
OBJECTIVE Although attempted suicide is one of the strongest predictors of completed suicide, few Japanese studies have described psychiatric differences between those who attempt suicide by overdose (OD) and those who use more violent methods (MV). METHODS A total of 22 consecutively admitted MVs were compared to 78 ODs. All patients were referred for(More)
The purpose of this report is to introduce the potential of synchrotron radiation X-ray fluorescence (SRXRF) spectroscopy, by describing the application of this method to mapping and quantification of metallic elements in neurons from brain tissues affected by Alzheimer's disease (AD). In this study, clear images of Fe, Zn and Ca within certain single(More)
BACKGROUND In conversion disorder in childhood and adolescence, polysymptomatic (PS) presentations are reportedly commoner than monosymptomatic (MS) ones. Somatization disorder is also associated with pseudoneurological symptoms, but is extremely rare in childhood. This occurs despite the age of onset peaking in the teens among adult somatization disorder(More)
Mental fatigue in patients with obstructive sleep apnea syndrome (OSAS) was investigated and compared with subjects without OSAS. The study series comprised 189 habitual snoring patients and 75 controls. To measure subjective mental fatigue and somnolence, subjects were asked to complete the Maastricht Questionnaire (MQ) and the Epworth Sleepiness Scale(More)
A middle-aged female patient with chronic insomnia showed rapid eye movement (REM)- localized obstructive sleep apnea. She visited the Sleep Disorders Clinic and complained of insomnia with loud snoring. Once, in the past, her sleep complaints had disappeared after weight reduction but, 6 months later, she complained of excessive daytime sleepiness.(More)