No abstract available.

No abstract available.
Anxiety Disorders* ; Anxiety* ; Humans ; Lymphocyte Subsets* ; Lymphocytes*

PURPOSE: In this study, we attempted to analyze the occupational accident experience rate by working life cycle of Korean workers considering entrance and turnover in their jobs. The specific goal of this study was to calculate the accident experience rate according to workers' turnover history and previous accident experience. METHODS: We constructed a cumulative data set of 90,338 cases of workers' accident experiences in their jobs from the Fourth Korean Working Conditions Survey. The accident experience rates according to workers' turnover and previous accident experiences were analyzed using descriptive statistics and analysis of variance. RESULTS: In this study, the cumulative accident experience rate of Korean workers was found to be 5.2%. It was confirmed that the accident experience rate of workers increased as the turnover frequencies increased. In addition, we analyzed only the data of the workers who had experienced turnover and found that the accident experience rate after turnover increased about 7.5 times when workers had experienced accidents in the past. CONCLUSION: To prevent occupational accidents in workers, safety strategies should consider a worker's previous job history and injury experiences. It will also be necessary to focus preventive efforts on new and young workers through ongoing monitoring and on-the-job training.
Accidents, Occupational ; Dataset ; Inservice Training ; Life Cycle Stages

PURPOSE: In this study, we attempted to analyze the occupational accident experience rate by working life cycle of Korean workers considering entrance and turnover in their jobs. The specific goal of this study was to calculate the accident experience rate according to workers' turnover history and previous accident experience. METHODS: We constructed a cumulative data set of 90,338 cases of workers' accident experiences in their jobs from the Fourth Korean Working Conditions Survey. The accident experience rates according to workers' turnover and previous accident experiences were analyzed using descriptive statistics and analysis of variance. RESULTS: In this study, the cumulative accident experience rate of Korean workers was found to be 5.2%. It was confirmed that the accident experience rate of workers increased as the turnover frequencies increased. In addition, we analyzed only the data of the workers who had experienced turnover and found that the accident experience rate after turnover increased about 7.5 times when workers had experienced accidents in the past. CONCLUSION To prevent occupational accidents in workers, safety strategies should consider a worker's previous job history and injury experiences. It will also be necessary to focus preventive efforts on new and young workers through ongoing monitoring and on-the-job training.

No abstract available.
DNA* ; Ploidies* ; Stomach Neoplasms*

BACKGROUND: Blood CD4+ T-lymphocyte (T4) count is a major clinical marker for the diagnosis and management of AIDS, and flow cytometry is considered the gold standard for T4 enumeration. Our aim was to compare the 2-color and 4-color flow cytometric methods for T-cell subset analysis in HIV-infected patients. METHODS: T-cell subsets such as T3, T4, T8, and CD3+CD4-CD8- double negative T cells (DN T) were analyzed from the whole blood of 40 HIV-infected patients by using both 2-color and 4-color methods on a Cytomics FC500 analyzer. Statistical analyses using simple linear regression, paired t-tests, and Bland-Altman plots were performed. RESULTS: The measured T3 (%), T4 (%), T4 (/microL), T8 (%), T8 (/microL), and DN T (%) differed significantly between the 2 methods (P<0.05), whereas the T4/T8 ratio did not. T3 (%), T4 (%), T4 (/microL), T8 (%), T8 (/microL), and T4/T8 measured by the 2 methods showed good correlation, with correlation coefficients above 0.96, whereas DN T (%) did not. The mean differences in T4 (%) and T8 (%) were 0.39% (limit of agreement (LoA), -1.64~2.43) and 1.26% (LoA, -3.37~5.89), respectively. CONCLUSIONS: Although there were statistically significant differences in the T cell subsets measured between the 2 methods, the differences were minor, and the 2 methods showed good correlation. As confirmed in this study, DN T (%) estimated by the 2-color method is lower than the actual value. We suggest that although the 2 methods can be used interchangeably, the 4-color method is recommended for the analysis of some specific subpopulations such as DN T (%).
Biomarkers ; Flow Cytometry ; HIV ; Humans ; Linear Models ; T-Lymphocyte Subsets ; T-Lymphocytes

No abstract available.
Humans ; Leukemia, Myelogenous, Chronic, BCR-ABL Positive*

Plasma carotenoid levels were compared among 64 healthy male subjects (control) and 38 patients of ischemic heart disease(IHD) and 20 ones of cerebral infarction(CI) all of whom were over 50years of age. Another 98 healthy male subjects aged 23 to 58 were selected to compare their plasma carotenoid levels by age groups, Levels of lutein, zeaxanthin and crpytoxanthin were lower in IHD(34+/-2, 13+/-1 and 62+/-7 microgram/dl)and CI(36+/-3, 12+/-2 and 41+/-6 microgram/dl)patient groups than in control group (84+/-5, 16+/-2 and 69+/-3 microgram/dl) while those of lycopene, alpha-and beta-carotene varied little among the three groups. The sum of the six carotenoid levels were levels were, therefore,highest(205+/-14 microgram/dl) in the control group followed by IHD(155+/-15 microgram/dl) and CI(128+/-17 microgram/dl) patient groups, Among the 98 healthy male subject for the age group study, levels of the three major carotenoids increased with age from the twenties to the fifities ; lutein, from 64+/-6 to 89+/-8 microgram/dl, cryptoxanthin, 57+/-8 to 73+/-4 microgram/dl and beta-carotene were more significantly correlated(r=0.30 to 0.61, p<0.01), whereas levels of lycopene and alpha-caroteme were significantly(r=0.21 - 0.23, p<0.05) correlated.
beta Carotene ; Cardiovascular Diseases* ; Carotenoids ; Cerebral Infarction ; Daegu* ; Heart ; Humans ; Lutein ; Male ; Myocardial Ischemia ; Plasma*

A 19-year-old, woman who had been diagnosed as systemic lupus erythematosus (SLE) a year ago, was admitted because of fever, dizziness, and sustained postoperative bleeding after a hemorroidectomy. On admission, a CBC revealed pancytopenia (Hb 6.2 g/dL, WBC 1,200/microL, platelets 11,000/microL) with a shift to themicroLeft, and the FDP and D-dimer were positive. She was treated for sepsis and disseminated intravascular coagulation. Granulocyte colony-stimulating factor (G-CSF) was administrated twice for severe neutropenia. An increase in WBC and immature myeloid cells, mainly hypergranular promyelocytes on the peripheral blood followed and was considered to be the effect of G-CSF. To evaluate the cause of pulmonary infiltrates, bronchoalveolar lavage (BAL) was performed on the 5th day of admission. The BAL fluid revealed many promyelocytes and myelocytes with occasional structures recognized as Auer rods. Acute promyelocytic leukemia (APL) was confirmed on the bone marrow study and chromosome analysis. Unfortunately, the patient died of septic shock on the 9th day of admission. We report here a very rare case of APL diagnosed in a SLE patient, the diagnosis of which was somewhat delayed due to the use of G-CSF and superimposed sepsis.
Bone Marrow ; Bronchoalveolar Lavage ; Diagnosis ; Disseminated Intravascular Coagulation ; Dizziness ; Female ; Fever ; Granulocyte Colony-Stimulating Factor ; Granulocyte Precursor Cells ; Hemorrhage ; Humans ; Leukemia, Promyelocytic, Acute* ; Lupus Erythematosus, Systemic* ; Myeloid Cells ; Neutropenia ; Pancytopenia ; Sepsis ; Shock, Septic ; Young Adult

PURPOSE: Acinetobacter species are aerobic gram-negative rods that can be widely found in nature and are a part of the normal flora of humans. The most clinical isolates of A. baumannii reflect infection rather than colonization. Recent reports suggest that the organisms cause serious and often fetal nosocomial infection such as ventilator-associated pneumonia. METHODS: From March to September 1998, we experienced thirty clinical isolates of A. baumannii in fifteen patients in Sonchunhyang University Chunan Hospital neonatal intensive care unit. Clinical characteristics, bacteriologic investigation, and molecular epidemiologic investigation by randomly amplified polymorphic DNA (RAPD) method was performed. RESULTS: The number of clinical isolates of A. baumannii were thirty and the number of Acinetobacter cases were fifteen. The duration of hospitalization and ventilator support were significantly longer in the patient group than in the control group. The most common culture site of A. baumannii was the endotracheal tube (83.3%). The thirty clinical isolates showed resistance to the most commonly used antibiotics. The RAPD result of A. baumannii isolated from fifteen patients showed the same band patterns, designating they were of the same strain. Surveillance cultures of medical staffs' hands, incubators, and ventilators failed to identify the source of infections. CONCLUSOIN: It is possible to have an outbreak of A. baumannii in a neonatal intensive care unit. In A. baumannii infection, the durations of hospitalization and ventilator support were significantly longer. It is very difficult to discover the source of A. baumannii outbreak.
Acinetobacter baumannii* ; Acinetobacter* ; Anti-Bacterial Agents ; Chungcheongnam-do ; Colon ; Cross Infection ; DNA ; Hand ; Hospitalization ; Humans ; Incubators ; Infant, Newborn ; Intensive Care, Neonatal* ; Pneumonia, Ventilator-Associated ; Ventilators, Mechanical