The engaging>30 minutes of physical activity (PA) at 4-6 METs has been recommended for the prevention of cardiovascular disease. We determined whether relatively low intensity (i. e., 3-5 METs) PA inhibits the age-related central arterial stiffening, a risk of cardiovascular disease. In the cross-sectional study, the association between carotid arterial properties (via ultrasound system) and daily PA (via electric accelerometer) were studied in 172 normotensive people (41-82 yrs). People engaging>30 min/day of PA corresponding to 3-5 METs had a significantly lower beta-stiffness index than sedentary peers after adjusting for covariates (i. e., age and PA time at more than 6 METs). In the interventional study, beta-stiffness index of nine normotensive postmenopausal women was significantly decreased after the 12-week aerobic training (cycling at 80% of ventiratory threshold, ≈4 METs, 30 min/day, 5 days/week). These results suggest that the increase in daily PA at 3-5 METs inhibits the age-related carotid arterial stiffening.

Purpose
 Forearm bathing is considered beneficial for the hands of patients with spastic hemiplegia, but the effect has not been investigated comprehensively. This study investigated the effectiveness of forearm bathing for patients with hemiplegic hands.
Subjects and Methods
 In total, nine hemiplegic patients participated in the study (mean±standard deviation age=56.9±16.6 years; mean±standard deviation period from onset=21.1±21.2 months). Participants sat in a relaxed position on a chair, and dipped the affected forearms into 40°C warm water for 15 mins. The Simple Test for Evaluating Hand Function (STEF) score was evaluated before and after forearm bathing as an indicator of hemiplegic hand function. The Modified Ashworth Scale (MAS) score for the biceps brachii muscle, and both the resistance power of elbow extension and the F/M ratio (F-wave amplitudes/ M wave amplitudes) for the abductor pollicis brevis muscle, were evaluated as indicators of hemiplegic hand spasticity. The device used to measure the resistance power of elbow extension comprised a motor, cuffs to fix the hemiplegic arm and forearm in place, and a control system. The axis of rotation of the device was positioned over the axis of rotation of the elbow joint. The device induced passive elbow flexion and extension movements at an angular velocity of 60°/sec or 90°/sec.
Results
 After forearm bathing, the STEF score increased significantly (p<0.05) from 42.9±28.0 to 47.8±28.4 (n=9), the resistance power of elbow extension at 90°/min decreased significantly (p<0.01) from 4.0±1.8 N to 3.0±1.9 N, and the MAS score and F/M ratio were unchanged (n=6).
Conclusions
 Forearm bathing appeared to improve function and decrease spasticity in hemiplegic hands. This treatment might facilitate hand rehabilitation.

There are rare reports of families with multiple members with aortic dissection in the absence of Marfan syndrome. We encountered four cases of aortic dissection in two families. The aortic dissection occurred in the mother and child of the first family and in sisters of the second family. All cases had systemic hypertension preoperatively and presented Stanford type A aortic dissection. All of them were operated successfully. None of them showed the characteristics of connective tissue disease affecting the skeletal, ocular, and cardiovascular system. However, many members of the two families had systemic hypertension and histopathological examination of the aorta showed cystic medial necrosis in all of the four cases. The present study suggests that the familial aortic dissection may be caused by weakness of the aortic wall related to heredity and systemic hypertension.

Dichlorotriazinyl aminofluorescein (DTAF) has been used to stain corneal stromal collagen as part of in vivo animal experiments for many years. Toxicity of this drug, if present, might alter the observed wound healing. To determine if this drug has any deleterious effect on keratocytes, we evaluated it in vitro. Human keratocytes prepared in 24-well plates were exposed to varying concentrations of DTAF (10(-4), 10(-3), 10(-2), 1, 10, 10(2) microgram/ml). Exposure times of 1 hour and 24 hours at each concentration of DTAF were evaluated. The cell number was measured 1 and 3 days after initiation of exposure to DTAF using a Coulter counter. Keratocyte proliferation was not affected by 1-hour exposure to DTAF, but keratocyte proliferation measured 3 days after initiation of exposure to DTAF for 24 hours was inhibited in a dose-dependent manner (p = 0.02) and was significantly inhibited at concentrations of 10 and 100 microgram/ml (p < 0.05). Fluorescent microscopy showed binding of DTAF to keratocytes. We have demonstrated that prolonged exposure to DTAF inhibits proliferation of cultured keratocytes. These results suggest that DTAF-induced cytotoxicity may alter net production of collagen in the corneal stroma in animal models.
Cell Count ; Cell Division/drug effects ; Cells, Cultured ; Corneal Stroma/cytology/*drug effects ; Fibroblasts/cytology/drug effects ; Fluoresceins/*pharmacology/toxicity ; Fluorescent Dyes/*pharmacology/toxicity ; Humans ; Microscopy, Fluorescence

The usefulness of individual care of patients in the attitude education of undergraduates was evaluated with questionnaires completed by 4th-year medical students and patients. Ninety-eight percent of students finished performing patient care during a 2-week period. Seventy percent of patients completed questionnaires. The appearance, manner of greeting, and language of the students were considered good by 87% or more of the patients, and the students' consideration for the patients' safety, privacy, and communication was considered good by 86% or more of the patients. The practice was approved by 77% of the patients and was objected to by none. Ninety-nine percent of students completed questionnaires, and 79% of the respondents approved of the practice. Fourteen percent of the student respondents, many of whom had been treated as outpatients, objected to the practice. These results suggest that individual care of patients by medical students is useful for both patients and students.