- Chromosome Aberrations and Sister Chromatid Exchanges of Hospital Workers Exposed to Radiation.
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Ae Ri Cha, Mi Sun Kim, In Kyung Hwang, Su Ill Lee, Byung Mann Cho, Don Kyoun Kim
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Korean J Prev Med. 1998;31(4):616-627.
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- In order to evaluate the cytogenetic hazard among hospital workers potentially exposed to low dose of radiation, the analysis of chromosome aberrations(CA) and sister chromatid exchanges(SCE) in lymphocytes were performed in 79 hospital workers and 79 non-exposed workers. The mean frequency of chromosomal exchange and deletion(respectively, 0.20X10-2/cell and 0.39X10(-2)/cell) in the exposed group were significantly higher than those(0.07X10(-2)/cell and 0.23X10-2/cell) in control group. The frequency of sister chromatid exchanges was 5.04/cell in the control vs. 6.57/cell in the exposed group. There were also significant differences in the mean frequencies of CA and SCE adjusted for age, sex, smoking, drinking between two groups. There were no evidence of significant increase of CA and SCE according to the department or duration of employment. But the frequency of cells having chromosome aberration was significantly higher in the exposed group than in the control group related to duration of employment. There was no dose-effect relationship between the cumulative doses and the frequency of CA and SCE. But in the case of last 1 yr cumulative dose, there were evidence of significant dose-dependant increase of chromosome type CA and percentage of cells with aberration. The result suggest that there is cytogenetic hazard in risk group like hospital workers handling low dose radiation. And the analysis CA and SCE are useful biological indicators for the exposure of low dose level of radiation.
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Summary
- A Study on obesity pattern and related factors of the doctors.
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Young Sil Kim, Hye Sook Park, Bong Su Cho, Yeong Wook Kim, Kwang Wook Koh, Soo Yong Kang, Ae Ri Cha, Cheol Ho Yi, In Kyung Hwang, Byung Mann Cho, Su Ill Lee, Don Kyoun Kim
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Korean J Prev Med. 1997;30(4):708-718.
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- The author surveyed overall obesity indicies and factors concerned with obesity such as dietary intake, physical activity, stress and life style with the subject of doctors. The number of subjects was total 508 with 396 men and 112 women. They were subgrouped into surgical part, medical part and service and basic part by speciality. And also subgrouped into intern and resident, pay doctor, and practitioner by working type. The results were as follows. 1) Obesity indices: BMI of total doctor was 23.1+/-2.8, and WHR was 0.87+/-0.08 and overweight prevalence(BMI>25.0) was 23.6 %. It was within normal limit but slightly over the Korean standard. The degree of obesity indices of subgroups by speciality was "surgical part > medical part > service and basic part", and by working type was "practitioner > pay doctor > intern and resident". 2) Dietary intake and Physical activity: Average dietary intake was 2148+/-451 kcal/day. The degree of dietary intake by speciality was "surgical part > medical part > service and basic part". By working type it was "practitioner > pay doctor > intern and resident". Average physical activity was 29+/-5 METs/day. The degree of physical activity also showed similar pattern. But there was no significant difference among each groups. 3) Comparison between over-weight and non-over-weight group: The items that showed significant difference between two groups were dietary intake, skip breakfast, regular exercise, smoking, heavy drinking, chronic disease etc.
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Summary
- A Study on Serum Lipid Levels of Children in Pusan.
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Soo Yong Kang, Byung Mann Cho, Su Ill Lee, In Kyong Hwang, Yeung Wook Kim, Young Sil Kim, Ae Ri Cha, I Ho Ha, Chel Ho Lee, Don Kyoun Kim
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Korean J Prev Med. 1997;30(4):686-696.
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- This is a cross-sectional study to evaluate the serum lipid levels of children living in Pusan in 1996. The distribution of age is from 2 years old to 12 years old. In female children mean total cholesterol is 171.4+/-26.2mg/dl, triglyceride is 104.7+/-50.6mg/dl, HDL-cholesterol is 54.4+/-14.8mg/dl, and LDL-cholesterol is 95.4+/-32.9mg/dl. In male children mean total cholesterol is 167.9+/-25.2mg/dl, triglyceride is 90.6+/-45.5mg/dl, HDL-cholesterol is 55.4+/-11.7mg/dll, and LDL-cholesterol is 94.4+/-23.6mg/dl. The percentile of serum lipid levels is measured in children. The 95th percentile of serum total cholesterol is 210mg/dl in male children, and 214mg/dl in female children. And, the 95th percentile of serum triglyceride is 184mg/dl in male children, and 191mg/dl in female children. And, the 95th percentile of LDL-cholesterol is 133mg/dl in male children, and 135mg/dl in female children. Serum total cholesterol is positively related to age(r=0.18), height(r=0.08), weight(r=0.17), obesity index(r=0.12), and negatively related to father's education level(r=-0.13), mother's education level(r=-0.13). Serum triglyceride is positively related to weight(r=0.23), age(r=0.31) and negatively related to father's education level(r=-0.12), mother's education level(r=-0.18). Serum HDL-C was positively related to mother's education level(r=0.07) and negatively related to height(r=-0.12), weight(r=-0.09). Conclusively, the serum lipid levels of children living in Pusan is generally so high that the family and school must try to control the serum lipid levels.
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Summary
- The Seroprevalence and Related Factors of Helicobacter pylori Infection.
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Yeung Wook Kim, Su Ill Lee, Byung Mann Cho, Young Sil Kim, Su Yong Kang, Oae Ri Cha, Don Kyoun Kim
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Korean J Prev Med. 1996;29(3):669-678.
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- Helicobacter pylori is now recognized as causative agent of chronic gastritis and peptic ulcer, and strongly associated with development of gastric carcinoma. With development of sensitive and specific serologic tests to identify individuals infected with Helicobacter pylori, the epidemiologic study of this diseases has been investigated. But it's transmission route is not established, yet. The purpose of this study is to measure the prevalence of Helicobacter pylori infection in healthy children and young adults and to evaluate related factors for Helicobacter pylori infection in Korea. The seroprevalence of Ig G antibodies to Helicobacter pylori was determined using a Enzyme Linked Immunosorbent Assay and we obtained the information, such as demographic characteristics, monthly household income, numbers of family members in the house, numbers of persons using same room, type of house, and type of drinking water through the questionnaire survey. The observed overall seropositivity rate was 25.7%. The rate is increased progressively from 5.8% in the age group 1~3 years to 44.4% in the age group 20~29 years(chi-square for trend, p<0.001). Especially, the rate increased steeply from 6.5% in the age group 4~6 years to 20.8% in the age group 7~9 years, and this suggested that elementary school age was the major acquisition time of Helicobacter pylori infection. In multivariate logistic regression model, age, numbers of family members in the house, and type of house was statistically significant variables for Helicobacter pylori infection. Each odds ratio(95% CI) were as follows; base to age group 1~9 years, age group 10~19 years 3.6(2.0~6.4), age group 20~29 years 7.3(4.1~13.1) and base to group of 1~3 family members, groups of 4~5 family members 2.1(1.1~4.0), group of 6 or more family members 2.7(1.3~5.4) and base to apartment, single and multihouse 1.9(1.1~3.5). Sex, monthly household income, numbers of persons using same room, and type of drinking water was not statistically significant for Helicobacter pylori infection.
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Summary
- A Study on the Factors related to the Cognitive Impairment of the Elderly in a Rural Area.
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Kwang Wook Koh, Byung Mann Cho, Su lll Lee, Don Kyoun Kim, Bong Su Cho, Yeung Wook Kim, Young Sil Kim, Su Yong Kang
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Korean J Prev Med. 1996;29(3):657-668.
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- To investigate the factors which affecting the cognitive impairment of the 60 or more age group, the authors surveyed for the subjects in some area of Kyungnam Province. 201 studied subjects were tested for cognitive function with mini-mental state examination(MMSE). Information on demographic characteristics and life style has been collected through direct interview. The concentration of Al and Ca of subject's drinking water, which might be related with cognition, was measured by Inductively Coupled Argon Plasma Spectrometer. The main results were summarized as follows. 1. The prevalence rate of cognitive impairment was 18.4% in male and 45.2% in female and this sexual difference was statistically significant(p=0.03). And the uneducated or illiterated showed significantly high prevalence rate of cognitive impairment(p=0.02). 2. In stratified analysis by sex and education year, we can not see significant trend indicating the neurotoxic effects of aluminum and protective effects of calcium to the cognitive function(p>0.05). 3. The correlation between the concentration of aluminum in drinking water and the MMSE score in whole subjects showed weak negative relationship(r=-0.066). But there was no statistical significance(p=0.434).
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Summary
- A Study on Food Intake and Associated Factors of the Urban Poor Elderly.
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Bong Soo Cho, Don Kyoun Kim, Su Ill Lee, Byung Mann Cho, Yeung Ook Kim, Kwang Wook Koh
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Korean J Prev Med. 1995;28(1):59-72.
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- This study was carried out to analyse the food intake and associated factors of the urban poor elderly by comparing poor district, Unbong rental apartment in Bonsong 2 dong with other areas in Pusan. 135 elderlies(men 36, women 99) in Unbong rental apartment 136 elderlies(men 45, women 91 ) in the other areas were investigated during the period of March to August in l994. The assumption that the study area represented poor district was satisfied because the age and sex distribution was not significantly different, and the income of the study area was significantly lower than that of the control area. The variables of hospitalized in previous 12 month, gastrointestinal problem, alcohol drinking, cigarette smoking did not differ significantly. But the variables of chronic disease, take medicine, perceive, vitamin supplement differed significantly between two groups. Therefore some factors associated with health state in the study area are worse than those of the control areas. At most of all variables, nutrients intake of the study area did not reach the recommended dietary allowances(RDA) for Koreans, and that nutrient intakes of the study area were significantly lower than those of the control area. The hypothesis of this study that nutrient status depends on economical status was proved. As for the score of nutritional knowledge, the study area was significantly lower than the control area. But as for the score of nutritional behavior, two areas were not significantly different. The latter is counter result of our hypothesis, owing to the effect of the confounding factors including education etc. As for the correlation of variables, not only economic status and educational level, but the score of nutritional knowledge effects strongly on nutrient status in the study area, the poor district. Therefore, adequate nutritional education to the elderly in the poor district should be considered.
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Summary
- Sociomedical Survey on the Occupational Low Back Injuries of the Some Workers in Pusan Area.
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Jong Ook Park, Don Kyoun Kim, Su Ill Lee, Byung Mann Cho, Bong Soo Cho, Yeung Wook Kim
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Korean J Prev Med. 1994;27(2):299-312.
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- This survey was performed to obtain the basic information for the prevention and management of occupational low back injury(LBI). The subjects of this survey were 952 workers(male, 892;female, 60) who had taken occupational LBI in some industries of Pusan area from January 1 to December 31, 1991. Observation period was 2.6 years from the beginning to the end of medical treatment. The obtained results were summarized as follows; 1. The proportion of LBI workers was 15.9% of the workers who had taken any occupational injuries and 0.32% of all workers in this surveyed area. 2. 8.0% of the workers had taken LBI on the 1st day of employment and 55.2% of the workers were within one year, 91.4% of the workers were within 10 years according to cumulative frequency distribution. 3. Handling of heavy objects was the most common cause of LBI(32.0%) and fall down(26.9%) and slip down(16.3%) were the next in order. 4. The most common causes of both lumbar sprain and HNP were handling of heavy objects and that of lumbar fracture was fall down. 5. The mean duration for medical treatment of LBI workers was 143 days. 6. The total direct compensation cost for LBI workers was 6,736 million Won and the proportion of medical, resting, disability compensation costs were 25.0%, 37.0%, 38.0% respectively. 7. The percentages of retreated workers and disabled workers were 11.9%(113 persons) and 22.9%(218 persons) of total LBI workers respectively.
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Summary
- Assessment of renal function in silicosis with urinary N-acetyl-beta-D-glucosaminidase activity.
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Hoo Rak Lee, Don Kyoun Kim, Su Ill Lee, Byung Mann Cho, Wha Jo Kim
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Korean J Prev Med. 1993;26(1):49-64.
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- To provide the basic for assessment of renal dysfunction related to silicosis, urinary N-acetyl-beta-D-glucosaminidase(NAG) activity known as a sensitive markers for early renal damage were measured in 58 silicosis patients, and control subjects of 40 pulmonary tuberculosis patients and 51 official workers. The results were summarized as follows. 1. The values of blood urea nitrogen and serum creatinine in all subjects were within reference limits. But the mean value of urinary NAG activity(7.25+/-7.31 U/g creatinine) was beyond reference value and more sensitive test than others. 2. The mean value of urinary NAG activity in silicosis group was 11.98+/-9.05 U/g creatinine and significantly higher than in tuberculosis and healthy group(p<0.01), but the mean values of NAG activity in tuberculosis and healthy group were not different(p>0.05). 3. The value of NAG activity in tuberculosis had a tendency to be increased according to severity of disease, but that was not significant(p>0.05). The value of NAG activity was increased significantly by use of nephrotoxic antituberculosis drugs(p<0.05). 4. The value of NAG activity in silicosis had a tendency to be increased according to the size of nodule, use of nephrotoxic antituberculosis drugs and shortness of onset duration, but the increase was not significant(p>0.05). 5. After excluding the users of nephrotoxic antituberculosis drugs, the mean values of NAG activity in healthy control and in tuberculosis control were same as 3.63 U/g creatinine and 3.60 U/g creatinine, respectively. But the mean value of NAG activity in silicosis group was remarkably increased as 10.90 U/g creatinine(p<0.01). As above results, even though there are no abnormal findings in screening renal function test, silicosis can be related with renal dysfunction. And it will be very useful to apply urinary NAG activity in health management of workers exposed to dust.
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Summary
- A Study of The Relationship between Alcohol Intake, Smoking, Relative Weight and Serum Lipids Level in Young Adult Male Workers.
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Ji Ho Lee, Byung Mann Cho, Soo Ill Lee, Don Kyoun Kim
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Korean J Prev Med. 1992;25(4):386-398.
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- In order to study the relationship between life-style and serum lipids level in young adults, the author measured the concentration of serum total cholesterol (TC), triglyceride (TG) and high density lipoprotein cholesterol (HDL-C) and investigated age, relative weight, weekly alcohol intake and daily cigarette smoking through questionnaire in 310 male workers aged 20 to 39, in Ulsan area. The results obtained were as follows: 1. In the factors being able to influence serum lipids level there was negative correlation between age and alcohol intake, and the positive corrrelation between age and relative weight, alcohol intake and relative weight, alcohol intake and smoking with the strongest correlation between alcohol intake and smoking. 2. In univariate analysis, mean total cholesterol concentration were significantly different according to age, smoking and relative weight; mean triglyceride concentration were significantly different according to relative weight only; mean HDL-C concentration were significantly different according to alcohol intake alone. 3. In non-drinkers, HDL-C concentration of smokers were significantly lower than that of nonsmokers but triglyceride concentration of smokers were significant higher. And in drinkers, total cholesterol concentration of smokers was significantly higher than that of non-smokers. 4. In multiple regression analysis, significant independent variables were relative weight, age and smoking in the total cholesterol concentration, and relative weight, age and alcohol intake in the triglyceride concentration, and alcohol intake, relative weight and smoking in the HDL-C concentration. By these independent variables, total variation in each dependent variable was explained 7.9%, 17.6% and 7.4% respectively.
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Summary
- A Study on the Induction of Sister-Chromadd Exchanges in Chinese Hamster Ovary Kl Cells by Exposure to Cadmium.
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In Kyung Hwang, Don Kyoun Kim
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Korean J Prev Med. 1990;23(2):178-184.
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- In order to exmaine the mutagenicity of cadmium dichloride the author studied the induction of sister chromatid exchanges in chinese hamster ovary K1 cells which treated with cadmium dichloride at various concentrations. The results obtained were as follows: 1. In cells treated with 10(-4) M cadmium dichloride, a small number of cells were visable but no mitosis was bound. 2. The frequencies of sister chromatid exchanges in cells treated with 10(-5) M and 10(-6) M cadmium dichloride as 10.7 +/- 1.9 and 8.3 +/- 2.1, respectively, were significantly increased for control (6.0 +/- 2.3). (p<0.05). 3. There were dose-dependent relationship between the concentration of cadmium dichloride and frequency of sister chromatid exchanges in cells treated with cadmium dichloride at concentration ranging from 10(-5) to 10(-7) M.
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Summary
- A study on the Values of Total Serum Cholesterol in Healthy Non-Pregnant and Pregnant Women.
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Cheol In Rhyu, Don Kyoun Kim
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Korean J Prev Med. 1990;23(2):167-177.
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- The author investigated the values of total serum cholesterol and its correlation with the physical factors to have potential as a line in the chain of basic investigation to establish maternal health program. The study group was composed of 167 healthy non-pregnant and 209 pregnant women in the age of 20-39 residing in Pusan area. The obtained results were as follows: 1. No significant differences were found in height and systolic and diastolic blood pressure in both groups except for the elevation of Broca's index by gaining the weight in pregnant women. 2. There were significant differences in the total serum cholesterol level of the healthy and pregnant women as 165.9 and 212.6 mg/dl, respectively, not showing the differences in the age. Total serum cholesterol values in both group followed approximately normal distrubution curve. 3. The significant correlation to the values of total serum cholesterol were found between weight and Broca's index in healthy women and between weight, Broca's index and duration of pregnancy in pregnant women. 4. The values of total serum cholesterol in pregnant women showed increasing tendency with the duration of pregnancy as 168.1 in 12 weeks and below, 209.6 mg/dl in 13-26 weeks and 235.4 mg/dl in 27 weeks and above group. Total serum cholesterol values by duration of pregnancy followed normal distribution curve.
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Summary
- An Epidemiological Study on the Accident resulting from Leakage of Chloride.
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Joon Yun Kim, Won Gae Cho, Jong Hwan Park, Chong Kyun Lee, Yong Chun Kim, Don Kyoun Kim
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Korean J Prev Med. 1972;5(1):49-56.
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- During the Period from 22th to November 26th , 1971, An Epidemiological Survey was performed on the Accident which was occurred by Leakage of Chloride Gases in A Chimical Industry, one of Wul San Industrial Areas. The obtained results were as follows ; 1. The largest damage was observed at Yeo Cheon Dong, 5.38 Km2 in Area and 8,192 in the Residents. 2. By the age distribution of Yeo Cheon Dong, The largest damaged area resulting from chloride accident, the age group of between 10 and 39 was highly occupied with 55.2% of all Yeo Cheon residents. 3. The number of patient was 436 totally, 198 in male and 238 in female. 4. By the age group distribution of the patient, in case of male, the largest group was under 20 age (96) and female, between 20 and 40 age group. 5. By the educational level of the patient, No-Education group was 116 (26.6%), and primary school, middle school and high school were respectively 168 (38.5%), 68(15.6%) and 12 (2.8%). 6. By the occupational distribution of the patient, No-Occupation group was 49.7%, students and agriculture were respectively 14.4% and 8.1%. 7. By the complaints of the patient, most of all were for respiratory tract, those are coughing (56.9%), chest tightness (35.6%), sore throat (24.8%), and so forth. 8. By the injured domestic animal, the Dog was most highly injured with 46.2%.
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Summary
- A Study on Health Status of Industrial Workers by Application of the Modified C.M.I..
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Joon Yun Kim, Won Gae Cho, Chong Kyun Lee, Yong Chun Kim, Hea Koun Park, Don Kyoun Kim
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Korean J Prev Med. 1972;5(1):25-35.
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- From May lst to November 30th, 1971, a study was conducted by authors on the health status of industrial workers through applying the modified Cornell Medical Index forwards a total of 4,565 labourers working in Busan City. The obtained results were as follows : 1. The largest number of industries and labourers was in Busanjin Gu, 9 and 2,386 (52.2%), respectively. 2. Total numbers of labourers subjected to the survey were 2,355 (51.6% in male, 2,210(48.4%) in female. 3. By age and sex distribution, the largest was seen with the age group of 25-34, 1,260 in male, otherwise with under the age group of 24, 1,994 in female labourers. 4. The highest average number of complaints by section among all age groups and industries was as follows ; In case of male labourers, textile was the highest with numbering 8.7 (35-39 age group) in the section of physical complaints, in the section of mental and total complaints, food industry was the highest with numbering 8.2 and 16.4, respectively, both under 19 age group, otherwise in case of female labourers, food industry was the highest with numbering 12.3 (physical), 10.3(mental) and 22.7 (total complaints) with all in 20-24 age group. 5. The lowest average number of complaints by section among all age groups and industries was as follows; In case of male labourers, other industry was the lowest with numbering 0.4 (55and over) in the physical, 0.3 (19and under) in the mental and 0.7 (55and over) in the section of total complaints, otherwise incase of female labourers, basic metal was the lowest in the all sections with all in 50-54 age groups.
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Summary
- An Epidemiological Survey on Cholera in Pusan City 1970.
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Don Kyoun Kim, Joon Yun Kim, Young Tae Suh
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Korean J Prev Med. 1970;3(1):31-36.
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- An epidemiological survey on cholera was made toward the 291 cases admitted in Pusan National University Hospital. The results were as follows. 1. The most predominant age groups among all cholera patients were form 30 to 39(21.3%). 2. 74.9% of all cases got under the educational background of primary school and 69.4% of all cases occurred at the low income group. 3. Daily average numbers of patient were 6.2 and maximum numbers were 15, August 19, 1970. 4. Among the food eaten prior to onset, drinking water was the most predominant with 16.2% and next, food and noodle groups were 14.8% and 10.3% respectively. 5. Regarding incubation period, it was found that "within 48 hours" was 83 5%. 6. Patients occurred mainly in Suh Ku area with 105(36.1%) of all closes. 7. Carrie rates among family members were 1.78%. 8. Carrier rates among residents of epidemic area were 0.l2%.
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