Background Obesity causes several changes in the body and is associated with both inflammation and oxidative stress. However, the relationship between abdominal obesity, diacron-reactive oxygen metabolites (d-ROMs), and biological antioxidant potential (BAP) levels in Korean adults has not yet been proved. The aim of this study was to evaluate the association between d-ROMs, BAP levels, and abdominal obesity in the Korean adult population using clinical data.
Methods A total of 2,367 individuals, aged 18–86 years, were identified from health check-up examination records at a university hospital, between January 2015 and August 2016. Clinical and biochemical parameters, including waist circumference, lipid profile, alcohol drinking status, and smoking status, were investigated. Oxidative stress levels, viz., d-ROM concentration and antioxidant capacity, viz., BAP, were measured.
Results Subjects with abdominal obesity presented significantly higher levels of d-ROMs compared to those with a normal waist circumference (P<0.001). After adjusting for age, sex, alcohol drinking status; smoking status; and triglyceride, low-density lipoprotein levels were found to have a significant positive correlation with abdominal obesity (P<0.001). BAP did not significantly correlate with abdominal obesity.
Conclusion We observed a positive association between abdominal obesity and d-ROM concentration. This result indicates that abdominal obesity can increase oxidative stress and may affect the pathways involved in obesity, such as the inflammatory pathway. Such correlation analyses were helpful in revealing the causes, as well as methods to reduce, oxidative stress.
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Background Oxidative stress is implicated in the pathogenesis and development of lifestyle-related diseases. In the present study, we evaluated the correlation between the serum uric acid (UA) levels and oxidative status in Korean adults.
Methods The subjects were 5,093 individuals (2,041 women and 3,052 men) who underwent a health checkup between June 2012 and December 2016. Oxidative stress levels (derivatives of reactive oxygen metabolites [d-ROMs]) and antioxidant potential (biological antioxidant potential [BAP]) were measured. Metabolic markers, including UA, were also examined.
Results Higher serum UA levels were associated with decreased levels of d-ROMs (P<0.05). The UA levels were positively associated with BAP levels (P<0.001).
Conclusion Serum UA is related to oxidative status, especially antioxidant capacity, in Korean adults; UA may play a role in antioxidant defense systems in humans.
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Background The social problems of cigarette smoking and obesity are increasing and they threaten the health and dailylife of the both the young and old adults. Therefore, we evaluated the relationship between cigarette smoking and obesity. Methods: The study subjects were recruited from the middle and high school located in Ansan city. We used the selfques tionnaire to evaluate their general information including cigarette smoking at enrollment and 8,589 students informations were gathered. Data were classified into three groups (normal body weight, over weight and obesity). Smoking status was classified into past, current, and non smoker and analyzed the relationship with obesity and some life-style patterns. Results: Body weight and body mass index of the girls were significantly higher in the current smokers (52.4 ± 12.2 kg, 19.8 ± 3.5 kg/m2) than in the non-smokers (49.5 ± 7.7kg, 19.3 ± 2.6 kg/m2) and in the boys, body weight was higher in the current smokers (60.3 ± 10.7 kg, 20.4 ± 3.1 kg/m2) than in the non-smokers (57.5 ± 12.1 kg, 20.3 ± 3.3kg/m2), which was not significant. The odds ratios of having obesity were 2.33 (P <0.001; 95% confidence interval [CI], 1.24 to 3.34) in the current smokers and 2.04 (P < 0.001; 95% CI, 1.36 to 4.0) in the past smokers compared with the non-smokers in the girls. In the boys, there were no significance. Also, all students of the dietary pattern (breakfast, fast food, instant noodle, snack, soft drink) were associated with smoking status significantly. Conclusion: The current smokers showed higher prevalence of obesity and obesity-related dietary pattern than in the nonsmokers. Cigarette smoking may be associated with obesity in the school girls.
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Background Elevated plasma total homocysteine causes the risk of cardiovascular diseases. By reducing plasma total homocysteine may prevent cardiovascular diseases. Many studies showed that vitamin B12 and folic acid decrease homocysteine level when taken with calcium fortified drinking water. Our aim of this study was to demonstrate the association between plasma homocysteine concentrations and daily calcium intake. Methods: Among 636 adults aged 40-69 years who visited a health promotion center of a university hospital from May 2006 to April 2007, the study subjects were 567 who completed self-reported questionnaire. Self-reported calcium intake amount and their baseline health questionnaire were obtained. We measured height and weight by physical examination. Through blood test, total cholesterol, triglyceride, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, plasma creatinine and homocysteine level were evaluated. Results: The mean daily calcium intake of entire subjects was 770.1 ± 266.3 mg. The mean plasma homocysteine concentration was 10.6 ± 4.3 Ռmol/L. The multiple regression analysis showed significant correlations between plasma homocysteine level and body mass index, plasma creatinine level and calcium intake. Plasma homocysteine level was inversely associated with dietary calcium intake. Conclusion: We found the calcium was inversely associated and homocysteine level an independent risk factor of cardiovascular diseases. However, further studies should be established to confirm if greater calcium intake may lower plasma homocysteine level.
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Background It is a well known fact that students majoring in medicine and engineering suffer from higher stress level and depression than students in other majors. This study was done to assess the prevalence of depression and the infl uencing factors among the university students majoring in either medicine or engineering and to compare the depression prevalence between the two groups. Methods: The study randomly selected 640 students either majoring in medicine or engineering from two universities in Kyung-Gi province, Korea. Each of 320 students majoring in either of the two majors from each university was recruited. Among 640 students, 360 students, who were composed of 172 medical students and 188 engineering students was fi nally chosen for the analysis. The Zung Self-Rating Depression Scale was used to measure the depression state. Results: The average Zung depression score of university students was 49.2 ± 9.8. Medical students had a higher score of 52.4 ± 9.3 as compared to engineering students, who scored 46.3 ± 9.4. Overall depression rate was 42.8%. Medical students had a higher depression rate (52.3%) than engineering students (34.0%). The logistic analysis showed that infl uencing factors on depression state were sex, grade, major, stress and satisfactory sleep. The main source of stress for medical students was the grades from classes whereas job search was for engineering students. There were differences between the two groups in managing the stress. Medical students chose alcohol drinking or smoking for stress management whereas engineering students playing selected video games as their outlet. Conclusion: Medical students from urban areas seemed to be depressed more than engineering students. Their stress management methods among the subjects were drinking, smoking, and playing video games which may cause further physical and psychological problems in the future.
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Background: Obesity and metabolic syndrome are closely correlated where previous studies showed that adipocytes release many inflammatory substances. HsCRP is an indicator of an independent risk factor in coronary heart disease. The aim of this study was to investigate the difference of hsCRP in different types of obese patients.Methods: We analyzed the data of 7,183 middle-aged Korean adults between the ages of 40 and 60 (men 4,147 and women 3,036) by using a cross-sectional approach. We divided study subjects into 4 different groups; Normal Group (NG; normal waist and normal body mass index), Centrally Obese Group (OB1; Non-obese group with central obestiy), Obese Group without central obesity (OB2) and Obese Group with central obesity (OB3). We compared the difference of anthropometry, metabolic parameters, and hsCRP. Results: Waist circumference (r=0.230, P<.001) and body mass index (r=0.222, P<.001) positively corresponded with high levels of hsCRP. Higher values of hsCRP were found in the OB3 compared to the NG. However, there was no difference between the OB1 and the OB2. The subjects who had central obesity or the metabolic syndrome showed high hsCRP values. The hsCRP values were the highest in subjects who had central obesity with the metabolic syndrome. But, the value of hsCRP was not significantly different in central obesity subjects with or without the metabolic syndrome. Conclusion: The highest value of hsCRP was significantly shown in the obese group with central obesity. However, there were no differences found in the hsCRP levels between the non-obese group with central obesity and the obese group without central obesity. (J Korean Acad Fam Med 2008;29: 484-491)
Background : Smoking may be a factor that decreases bone mineral density. Alcohol also may be a factor that increases or decreases bone mineral density. The authors investigated the relationship among life style-related smoking and alcohol intake and the bone mineral density and the amount that may result in the incidence of osteoporosis in Korean men over forties.
Methods : In 1,650 men over forties, we compared the mean values of bone mineral density by factors. Multiple logistic regression analysis was done on the incidence of osteoporosis and the statistically significant factors after adjustment for age, body index, and daily activity.
Results : In men, who smoked over 30 pack-years, the bone mineral density of the spine (P＜.001) and the femur (ward; P=.001, neck; P=.003) was statistically significantly low before and after adjusting (spine P=.001, femur ward P=.010, femur neck P=.016) for age, body mass index, and daily activity. In men who were presently drinking alcohol, the bone mineral density of the femur increased significantly (P＜.001), but drinking alcohol only influenced the bone mineral density of the femur neck after adjustment (P=.025). In men who drank 200∼300 g per week, the bone mineral density of the femur increased significantly (ward P=.001, neck P＜.001), and it influenced the bone mineral density of the femur neck (P= .046) after adjustment. The odds ratio was 1.5 in men who smoked over 30 pack-years in the incidence of osteoporosis, and was statistically significant.
Conclusion : As the odds ratio for incidence of osteoporosis increased in men who smoked over 30 pack-years, it is important to stop smoking.
Background : Possible risk factors relating to the development of insulin resistance was analyzed and the clinical availability of metabolic syndrome on insulin resistance was examined to evaluate the relationship between the metabolic syndrome and insulin resistance.
Methods : A total of 993 clients were selected according to the criteria of clinical identification by NCEP-ATP III. The metabolic syndrome group was 502 subjects and the control group was 491 subjects. Sociodemographic data and lifestyle factors were surveyed by questionnaire. Height, weight, blood pressure, fasting blood cholesterol, triglyceride, HDL cholesterol, glucose, and insulin levels were measured. W/BH ratio, AI, and HOMA-IR were calculated and analyzed in relation to cardiovascular risk factors.
Results : In the metabolic syndrome group, men were significantly greater than women (P＜0.05). The mean age and BMI in the metabolic syndrome group were significantly higher than controls (P＜0.05). The cut-off point for cardiovascular risk factor using the ROC curve with W/BH ratio was 0.529, AI 4.34, HOMA-IR 1.94, and Insulin 6.35 ｕIU. The area under the ROC curve for variables was significantly greater than the reference value (P=0.000). Therefore, W/BH ratio was a strong predictor of incident metabolic syndrome. The study subjects were grouped according to insulin resistance and then the relationship of cardiovascular risk factors was evaluated. Odds ratios of hypertension, hypertriglyceridemia, and low HDL-cholesterolemia were significantly increased in the metabolic syndrome group (P＜0.05), while the individuals with insulin resistance had a much higher incident diabetes than those without it, regardless of whether NCEP criteria for metabolic syndrome was met. The risk of insulin resistance in relation to metabolic risk factors tended to increase after adjustment of life style factors.
Conclusion : The diagnostic criteria for the metabolic syndrome was useful in finding out early stage of insulin resistance as an indirect measurement tool. Incident diabetes related to insulin resistance regardless of the presence of metabolic syndrome. Therefore, clinical treatment and life style modification in metabolic syndrome patients may decrease the development of cardiovascular disease and contribute to health promotion. Further study is needed to follow-up on metabolic syndrome patients.
Background : As prostate cancer in men is increasing in Korea, the need for early detection by mass screening has become an important issue. Screening tests for early detection of prostate cancer are digital rectal examination, transrectal ultrasonography (TRUS) and prostate specific antigen (PSA) test. PSA test has been mainly used for prostate cancer screening in health promotion centers. However, PSA has a high sensitivity but low specificity. Therefore, PSA concentration can be increased not only in prostate cancer, but also in several benign prostate diseases such as benign prostate hyperplasia (BPH), prostatitis, and prostate ischemia. Also, PSA concentration can increase in the elderly. Therefore, we investigated the results of follow-up PSA tests, in the cases of increased PSA concentration on screening.
Methods : In 538 cases, the PSA concentration were increased over 2.5 ng/ml among total 17,302 males checked up on screening test at Ajou University Hospital from January 1999 to December 2001. Two hundred and four cases followed up with TRUS or prostate biopsy were chosen. We investigated 89 cases who performed follow- up PSA test. On the basis of the results of biopsy or TRUS, the subjects were classified into non-disease group, benign prostate disease group and prostate cancer group (possible or confirmed prostate cancer group).
Results : The mean age of non-disease group was 35.5 5.9 years, which was significantly lower than that of benign prostate disease group and prostate cancer group (P＜0.05). Compared to the mean age of prostate cancer group (60.6 10.4 years) and non-prostate cancer group (53.1 12.3 years), prostate cancer group was significantly older than non prostate cancer group (P=0.005). When the lower limit of age was set to 40 years (mean-2SD), confirmed prostate cancer group was significantly older than other groups (p＜0.001). The PSA concentration of confirmed prostate cancer group (11.33 7.58 ng/ml) was significantly higher than that of non-prostate disease group (4.35 2.22 ng/ml) and possible prostate cancer group (4.44 2.29 ng/ml) (P＜0.05). The follow-up PSA level of confirmed prostate cancer group (10.13 6.13 ng/ml) was significantly higher than that of non-prostate disease group (2.55 0.97 ng/ml), BPH group (4.33 3.80 ng/ml), prostatitis group (3.61 2.17 ng/ml), prostate cyst group (3.00 1.86 ng/ml) and possible prostate cancer group (3.81 2.82 ng/ml) (P＜0.05).
Conclusion : It is recommended that screening test for prostate cancer be performed after the age of 40. While follow-up PSA test is needed when the PSA is increased up to less than 10 ng/ml, prostate biopsy may be desired in the PSA value of 10.0 ng/ml or greater.
Background : This research has been performed to recognize their current attention on the purpose of further improvement and management of health understanding co-relation between working and stress through the survey of smoking and alcohol drinking as an object of salary men and women.
Methods : The questionnaire toward the their general situation and interest of health status (smoking, alcohol drinking, stress, joy and sadness) was distributed and surveyed as an object of full members of hospital which is located at Suwon in 1999. The form of the questionnaire was comfortable answer, multiple choice which was composed of 125 question. The object of survey was all members of hospital (about 1940 person). However, finally 483 person was recommended amon collected 492 pieces out of distributed 600 pieces.
Results : The age range of objects was 21-54 years old. Average age was 31 yrs old, male was 175 persons(36.2%) and female was 308 persons (63.8%). Smoking rate per sex was that female was 2 persons (0.7%) among 299 persons and male was 118 person (68.2%) among 173 persons. Thirties of age group was the most majorities as 78 person among 120 smokers. The reason for smoking is that habit was 79 persons (52.0%) next to relief of stress was 51 persons (33.6%). There was significant differences (p<0.05) whether present health due to smoking future health. Alcohol drinking rate is 75.93% (344 persons). There is no sexual differences. (M:76.3%, F:75.7%) Dining together as a primary reason of alcohol drinking is 222 persons (65.1%), next to stress is 92 persons (27.0%). 146 persons considered that alcohol drinking is helpful for life. However 63 persons (19.6%) was concerned that alcohol drinking affected health and 197 persons (61.6%) agreed that alcohol drinking affected health not now for the future. It is proved that there is significant differences whether present status of health effects future one of those. 355 patients (78.5%) answered that they are stressed at present showed especially significant high rate to female (p<0.01). 287 patients (64.3%) considered that there is an abnormal symptoms due to stress. There is significant relation between stress and health(r=0.46, p<0.01). 279 persons answered that company is an object of stress whether 48 persons is family as that. 322 persons (74.4%) considered that stress of working (family) affects family (working) showed that there is significant differences (p<0.01). 353 persons (83.5%) answered that stress is worst to health among stress, smoking, alcohol drinking. However, it is not significant differences statistically that there is relation between stress, smoking, alcohol drinking by sex and age.
Conclusion : Stress was no relation to smoking and alcohol drinking. It might be considered that stress is worst to health than smoking and alcohol drinking. It affects health abnormally.
Background : This prospective study was performed to evaluate factors influencing weight changes pregnancy period and postpartum period.
Methods : A total of 195 women followed by prenatal care of the department of OBGY at Ajou University hospital. Suwon, Korea, between march, 1998 and march, 2000. Parity, activity, alcohol, smoking, age of menarche, and age of first and last pregnancy were recorded for prenatal information. Anthropometric measurements was checked at regular visits until 6 weeks after delivery and by telephone call at 6 months and 1 year postpartum. Rerults : Mean age was 30.1 years old and mean body mass index was 21.1 ㎏/㎡, Mean total weight gain during pregnancy was 13.6±4.63 ㎏ and wide range was at third trimester. It shows that weight reduced gradually until 6 months postpartum but increased after that time. 1 year postpartum weight gain had high correlation(R=0.999, p<0.01) with 6 months postpartum weight gain. Total pregnancy weight gain, weight retention on 6 week postpartum were not significantly correlated with 1 year postpartum Weight gain. OR for becoming overweight on 1 year postpartum(≥5.2 ㎏) with excessive rate of gain on 6 months postpartum(≥2.9 ㎏) was 5.41(95% CI 2.20-13.31) adjusted by multiple logistic regression analysis (age, activity level, parity). OR for becoming overweight on 1 year postpartum with excessive rate of Total pregnancy weight gain(≥13.6 ㎏ was 4.4895% CI 1.84-10.89) by multiple logistic regression analysis.
Conclusion : 1 year postpartum weight gain had the correlation with only 6 months postpartum weight gain.
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