A nested polymerase chain reaction (PCR) was applied to detect and identify pathogenic Yersinia enterocolitica and Y. pseudotuberculosis. We used photochemical postamplification procedure with 8-methoxypsoralen to control carryover contamination. Using the ail and inv gene, the sensitivity and specificity of DNA amplification by nested PCR was considerably improved. The amplified fragment sizes were 298 bp for the ail gene and 295 bp for the inv gene. Amplification was successful when the template was derived from three sources: purified DNA, aliquots of boiled bacterial suspension and aliquots of lysed bacterial suspension. The detection limits were 10 fg of DNA and 2 * 10 colony forming units (CFU) for Y. enterocolitica and 10 fg DNA and 2 CFU for Y. pseudotuberculosis.
DNA ; Limit of Detection ; Methoxsalen ; Polymerase Chain Reaction* ; Sensitivity and Specificity ; Stem Cells ; Yersinia enterocolitica* ; Yersinia pseudotuberculosis* ; Yersinia*

No abstract available.
Apnea* ; Humans

No abstract available.
Muscles ; Orbit ; Orbital Myositis

BACKGROUND: The rate of suicide of adolescents is recently significantly increasing in South Korea. Suicide is the first leading cause of death of adolescents aged 15 to 19 years in South Korea and the mortality rate due to suicide of adolescents is 8.9 per 100,000. The aims of this study is to investigate factors that affect suicidal ideation through inventory and scale. METHODS: A questionnaire was conducted to 820 high school students in a city, and 776 subjects who finished questionare were included in this study. Suicidal ideation, school bullying, excessive sexual thought and family conflict were checked by adolescent mental health and problem behavior screening questionnaire-II (AMPQ-II). Internet addiction degrees and depression was evaluated by internet addiction scale (IAS) and Beck's depression inventory (BDI), respectively. RESULTS: AMPQ-II, IAS, BDI, school bullying, suicidal ideation, and family conflict were closely related to each other. Binary logistic analysis showed that victims of school bullying (odds ratio [OR], 2.3; 95% confidence Interval [CI], 1.439-3.816), AMPQ-II high risk (OR 4.9; CI 2.546-9.433) and depression of all grade (OR 1.8 [mild], 2.2 [moderate], 6.4 [severe]) were related to suicidal ideation. CONCLUSIONS: Presence of school bullying, depression, and AMPQ-II high risk were closely related to suicidal ideation of high school students. Thus, AMPQ-II and BDI score can use as a screening tool for adolescent suicide ideation.
Adolescent Behavior ; Adolescent* ; Bullying ; Cause of Death ; Depression ; Family Conflict ; Humans ; Internet ; Korea ; Mass Screening* ; Mental Health* ; Mortality ; Problem Behavior* ; Suicidal Ideation ; Suicide*

When illuminated by blue light, the human crystalline lens exhibits green autofluorescence. Autofluorescence of the human lens were analyzed quantitatively in vivo as a function of age in 75 healthy individuals{150 eyes) without cataract, ranging in age from 17 to 63 years. Lenses were scanned through the dilated pupil along the optical axis, generating a fluorescence profile consisting of anterior and posterior peaks of lens, using an automated scanning fluorophotometer(Fluorotron master) coupled with a lens system designed for high resolution of the anterior segment structures. Anterior peak autofluorescence increased linearly by 90 ng fluorescein/ml per decade and posterior peak autofluorescence by 70 ng fluorescein/ml per decade. No significant difference between right and left eyes was demonstrated for anterior or posterior peak autofluorescence. We suggest that the quantitative analysis of the autofluorescence of the human lens might be useful to investigate the changes of the aging lens proteins and the pathogenesis of cataract.
Aging* ; Axis, Cervical Vertebra ; Cataract ; Crystallins* ; Fluorescence ; Fluorophotometry ; Humans ; Lens, Crystalline* ; Pupil

No abstract available.
Acrosome Reaction* ; Acrosome* ; Male ; Semen*

No abstract available.
Liver Cirrhosis* ; Liver* ; Pregnancy*

In this study, the food intake, feces and urine of 14 primary school age boys and girls were collected and intake and excretion of iron and zinc were measured. The boys and girls were 8-12 years old and measurement continued for four weeks during which they maintained their normal living pattern. Each boy's and girl's daily intake and excretion of iron and zinc were measured and apparent digestibility and balance were also calculated. The results are as follows. Mean daily intake of iron was 14.9+/-0.6 mg for the boys and 12.4+/-0.5 mg for the girls. Mean daily intake of zinc was 11.8+/-1.2 mg for the boys and 11.5+/-0.4 mg for the girls. Mean daily fecal loss and apparent digestibility of iron was 6.1+/-0.3 mg and 58.8+/-2.0% for the boys and 6.8+/-0.1 mg and 44.1+/-2.0% for the girls. Mean daily fecal loss and apparent digestibility of zinc was 9.3+/-0.2 mg and 14.4+/-5.1% for the boys and 9.7+/-0.4 mg and 14.3+/-4.3% for the girls. Mean daily urinary loss of iron was 1.1+/-0.1 mg and showed the positive balance of 7.86+/-0.6 mg for the boys and 0.5+/-0.1 mg and showed the positive balance of 5.14+/-0.4 mg for the girls. Mean daily urinary loss of zinc was 0.5+/-0.1 mg and showed the positive balance of 1.03+/-0.6 mg for the girls.
Child* ; Eating ; Feces ; Female ; Humans ; Iron* ; Zinc*

Total cholesterol and triglyceride were measured in sera of 40 cases of hypertension, 22 cases of myocardial infarction, 14 cases of cerebral thrombosis, 18 cases of subarachnoidal hemorrhage and 30 cases of normal control in Chungnam national University Hospital from October 1980 to September 1981, and the results are as follows; 1) The mean serum total cholesterol and triglyceride levels in normal control group are 153.57+/-40.60mg% and 150.82+/-51.76mg%. 2) The age incidence of these diseases were highest in 6th decade. 3) Serum cholesterol levels of myocardial infarction, hypertension, cerebral thrombosis and subarachinoidal hemorrhage group were higher than that of normal control group. 4) Serum triglyceride levels of acute myocardial infarction and hypertension were significantly higher than that of normal control group, but there is only slightly increases in cerebral thrombosis and subarachinoidal hemorrhage. 5) In general, serum lipid levels are higher in cardiovascular diseases(hypertension and myocardial infarction) than cerebrovascular diseases(cerebral thrombosis and subarachnoidal hemorrhage). 6) Serum Cholesterol and triglyceride levels decreased by administration of pancreatic mucopolysacharide for 1 or 2 months. In conclusion, it seems that high serum cholesterol and triglyceride level may play and important risk factor in development of hypertension and myocardial infarction.
Cholesterol ; Chungcheongnam-do ; Hemorrhage ; Hypertension ; Incidence ; Intracranial Thrombosis ; Myocardial Infarction ; Risk Factors ; Thrombosis ; Triglycerides

No abstract available.
Brain* ; Child* ; Humans ; Magnetic Resonance Imaging*