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Oh S, Lee S, Hwang WY, Suh DH, Jeon MJ. Development and validation of a prediction model for bothersome stress urinary incontinence after prolapse surgery: a retrospective cohort study. BJOG 2021; 129:1158-1164. [PMID: 34854216 DOI: 10.1111/1471-0528.17036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 10/01/2021] [Accepted: 10/31/2021] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To develop and validate a prediction model for bothersome stress urinary incontinence after prolapse surgery and to compare it with an existing clinical prediction model (CUPIDO model). DESIGN Retrospective cohort study. SETTING Two tertiary hospitals in South Korea. POPULATION A total of 1142 patients who underwent prolapse surgery with or without a concomitant midurethral sling. METHODS To construct a prediction model, we performed logistic regression using both exhaustive and stepwise variable selection, validating the model both internally and externally. MAIN OUTCOME MEASURES Bothersome stress urinary incontinence defined as the presence of bothersome symptoms of stress urinary incontinence and/or subsequent continence procedure one year after surgery. RESULTS Postoperative bothersome stress urinary incontinence occurred in 10% of patients. A model containing six predictors (age, diabetes mellitus, subjective urinary incontinence, prolapse reduction stress test result, type of prolapse surgery, and a concomitant midurethral sling) showed excellent performance for predicting bothersome stress urinary incontinence (area under the curve 0.74, 95% confidence interval 0.62-0.86) and outperformed the CUPIDO model (area under the curve 0.63, 95% confidence interval 0.49-0.76; DeLong's test P = 0.014). CONCLUSIONS This prediction model might be a useful tool to guide patient decision making regarding a concomitant continence procedure at the time of prolapse surgery. The predictive value of this model needs to be validated further in cohorts with different characteristics. TWEETABLE ABSTRACT The proposed prediction model for bothersome stress urinary incontinence after prolapse surgery outperforms an existing model.
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Affiliation(s)
- S Oh
- Department of Obstetrics and Gynaecology, Seoul National University Hospital, Seoul, Korea
| | - S Lee
- Center for Precision Medicine, Seoul National University Hospital, Seoul, Korea
| | - W Y Hwang
- Department of Obstetrics and Gynaecology, Seoul National University Bundang Hospital, Seongnam, Korea
| | - D H Suh
- Department of Obstetrics and Gynaecology, Seoul National University Bundang Hospital, Seongnam, Korea
| | - M J Jeon
- Department of Obstetrics and Gynaecology, Seoul National University Hospital, Seoul, Korea.,Department of Obstetrics and Gynaecology, Seoul National University College of Medicine, Seoul, Korea
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Cha SG, Byun YS, Jeon MJ, Sakong J. Diving patterns and decompression sickness among South Korean fishery divers. J Occup Health 2019; 61:143-153. [PMID: 30698347 PMCID: PMC6499353 DOI: 10.1002/1348-9585.12035] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 11/14/2018] [Accepted: 11/22/2018] [Indexed: 11/11/2022] Open
Abstract
OBJECTIVES We aimed to report the characteristics of diving practice and the incidence of decompression sickness (DCS) among South Korean fishery divers. METHODS We sent out questionnaires to 215 registered boat owners, and 196 of the fishery divers responded. The questionnaire was comprised of demographical characteristics, diving-related characteristics, and experiences with DCS. DCS was classified into types I and II based on the symptoms. RESULTS Their average length of career in fishery diving was 18.1 ± 8.5 years. They were working for 10.8 ± 1.9 months per year. The average bottom time was 74.7 ± 23.3 minutes, the average depth was 23.6 ± 6.8 m, and the average surface interval time was 20.7 ± 12.5 minutes. The incidence of DCS symptoms among the total participants was 84.7%. The incidence increased as working days per month and dives per day increased (P < 0.05). An increased average working depth and a short surface interval time tended to reflect an elevated incidence in the DCS symptoms (P < 0.01). Logistic regression analysis revealed working days per month, dives per day, average bottom time, and rapid ascent as risk factors (P < 0.05). CONCLUSIONS South Korean fishery divers were shown to be susceptible to DCS because of their repetitive dives for financial reasons. However, they are often beyond the scope of the law. The results of this study suggested that it is necessary to establish the registries of fishery divers.
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Affiliation(s)
- Su Gang Cha
- Department of Medical Science, Graduate School of Yeungnam University, Daegu, Republic of Korea
| | - Young Seok Byun
- Department of Occupational and Environmental Medicine, Yeungnam University Hospital, Daegu, Republic of Korea
| | - Man Joong Jeon
- Department of Occupational and Environmental Medicine, Yeungnam University Hospital, Daegu, Republic of Korea.,Department of Preventive Medicine and Public Health, College of Medicine, Yeungnam University, Daegu, Republic of Korea
| | - Joon Sakong
- Department of Occupational and Environmental Medicine, Yeungnam University Hospital, Daegu, Republic of Korea.,Department of Preventive Medicine and Public Health, College of Medicine, Yeungnam University, Daegu, Republic of Korea
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Byun YS, Park SK, Sakong J, Jeon MJ. Performance assessment on the Korean Computerized Neurobehavioral Test using a mobile device and a conventional computer: an experimental study. Ann Occup Environ Med 2018; 30:55. [PMID: 30181883 PMCID: PMC6114805 DOI: 10.1186/s40557-018-0264-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Accepted: 08/05/2018] [Indexed: 11/24/2022] Open
Abstract
Background The Korean Computerized Neurobehavioral Test (KCNT) is a psychological assessment tool used as part of Workers’ Special Health Examinations in Korea. Due to the spread of mobile technology, this study aimed to compare results of the KCNT administered on a tablet PC versus a desktop computer, and, therefore, assess the clinical applicability of mobile devices. Methods A total of 72 participants enrolled in this study. Their age, sex, and years of formal education were collected during an interview, as well as their typing speed. The test battery comprised five subtests: Simple Reaction Time test, Choice Reaction Time test, Digit Addition test, Symbol-Digit Substitution test, and Finger Tapping Speed test. Participants repeated the KCNT test battery in a randomly assigned order using four different testing systems: a desktop computer equipped with a conventional 106-key keyboard (System 1), a desktop computer equipped with a simplified keyboard (System 2), a tablet PC with a simplified 17-key on-screen keyboard (System 3), and a tablet PC equipped with a simplified keyboard (System 4). Results Results of the Digit Addition test did not differ significantly for different testing systems. In contrast, results of the Simple Reaction Time test, Choice Reaction Time test, Symbol-Digit Substitution test, and Finger Tapping test were lower for the tablet PC (Systems 3 and 4) compared to the desktop computer (Systems 1 and 2). Systems 1 and 2 did not show significantly different results. Performance on System 3 was inferior to that on System 4, only for the Choice Reaction Time test and Finger Tapping Speed test. There were also significant differences in performance by computer familiarity when adjusted for age and education; however, the performance of each group on the test systems showed similar patterns. Conclusions It is not recommended to use a tablet PC to administer the KCNT to evaluate neurobehavioral performance for the Simple Reaction Time test and Choice Reaction Time test; however, tablet PCs with an on-screen keyboard may be used to perform the Digit Addition test, and the Symbol-Digit Substitution test and Finger Tapping Speed test to a limited degree.
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Affiliation(s)
- Young Seok Byun
- 1Department of Occupational and Environmental Medicine, Yeungnam University Hospital, 3rd floor, Yeong-ui-gwan, 170, Hyeonchung-ro, Namgu, Daegu, 42415 Republic of Korea
| | - Sung Kyu Park
- 1Department of Occupational and Environmental Medicine, Yeungnam University Hospital, 3rd floor, Yeong-ui-gwan, 170, Hyeonchung-ro, Namgu, Daegu, 42415 Republic of Korea
| | - Joon Sakong
- 1Department of Occupational and Environmental Medicine, Yeungnam University Hospital, 3rd floor, Yeong-ui-gwan, 170, Hyeonchung-ro, Namgu, Daegu, 42415 Republic of Korea.,2Department of Preventive Medicine and Public Health, College of Medicine, Yeungnam University, Yeungnam University Hospital, 170, Hyeonchung-ro, Namgu, Daegu, 42415 Republic of Korea
| | - Man Joong Jeon
- 1Department of Occupational and Environmental Medicine, Yeungnam University Hospital, 3rd floor, Yeong-ui-gwan, 170, Hyeonchung-ro, Namgu, Daegu, 42415 Republic of Korea.,2Department of Preventive Medicine and Public Health, College of Medicine, Yeungnam University, Yeungnam University Hospital, 170, Hyeonchung-ro, Namgu, Daegu, 42415 Republic of Korea
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Park GI, Byun YS, Joong Jeon M, Sakong J. The associations between blood mercury levels and shark meat intake among workers in Gyeongsangbuk-do. Ann Occup Environ Med 2017; 29:29. [PMID: 28670459 PMCID: PMC5485542 DOI: 10.1186/s40557-017-0185-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 06/15/2017] [Indexed: 11/17/2022] Open
Abstract
Background Shark meat is used as sacrificial food in Gyeongsangbuk-do, and is a major source of dietary mercury. This study aimed to evaluate the effects of shark meat intake or the ritual of Jesa on blood mercury levels within workers living in Gyeongsangbuk-do. Methods This study was conducted from September 2016 to October 2016 in two cities of Gyeongsangbuk-do. To compare the differences between urban and rural areas, two workplaces each in Daegu as the urban area and Yeongcheon as the rural area were selected. General characteristics and characteristics related to shark meat consumption of the workers were acquired by personal interviews during their health examination. Blood mercury concentrations were analyzed by the gold amalgamation method using a direct mercury analyzer (DMA-80; Milestone Inc., Shelton, CT, USA). Results The shark consumption group had a higher blood mercury concentration than the non-consumption group. The levels of blood mercury increased with the frequency, annual intake, as well as most recent date of shark meat consumption. Moreover, the levels of mercury in blood increased according to the annual frequency of participation in Jesa (times per year) and the annual frequency of shark meat consumption during Jesa (times per year). Conclusions Shark meat intake and the ritual of Jesa contributed to an increase in the blood mercury levels of workers in Gyeongsangbuk-do. Therefore, it is necessary to evaluate dietary exposure, occupational as well as other factors that may influence blood mercury concentrations in workers during their health examination, particularly in regions with high mercury exposures.
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Affiliation(s)
- Gun Il Park
- Department of Occupational and Environmental Medicine, Yeungnam University Hospital, 170, Hyeonchung-ro, Nam-gu, Daegu, 42415 Republic of Korea
| | - Young Seok Byun
- Department of Occupational and Environmental Medicine, Yeungnam University Hospital, 170, Hyeonchung-ro, Nam-gu, Daegu, 42415 Republic of Korea
| | - Man Joong Jeon
- Department of Occupational and Environmental Medicine, Yeungnam University Hospital, 170, Hyeonchung-ro, Nam-gu, Daegu, 42415 Republic of Korea.,Department of Preventive Medicine and Public Health, College of Medicine, Yeungnam University, 170, Hyeonchung-ro, Nam-gu, Daegu, 42415 Republic of Korea
| | - Joon Sakong
- Department of Occupational and Environmental Medicine, Yeungnam University Hospital, 170, Hyeonchung-ro, Nam-gu, Daegu, 42415 Republic of Korea.,Department of Preventive Medicine and Public Health, College of Medicine, Yeungnam University, 170, Hyeonchung-ro, Nam-gu, Daegu, 42415 Republic of Korea
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Chung JY, Kim BG, Lee BK, Moon JD, Sakong J, Jeon MJ, Park JD, Choi BS, Kim NS, Yu SD, Seo JW, Ye BJ, Lim HJ, Hong YS. Urinary arsenic species concentration in residents living near abandoned metal mines in South Korea. Ann Occup Environ Med 2016; 28:67. [PMID: 27895924 PMCID: PMC5120503 DOI: 10.1186/s40557-016-0150-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 11/07/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Arsenic is a carcinogenic heavy metal that has a species-dependent health effects and abandoned metal mines are a source of significant arsenic exposure. Therefore, the aims of this study were to analyze urinary arsenic species and their concentration in residents living near abandoned metal mines and to monitor the environmental health effects of abandoned metal mines in Korea. METHODS This study was performed in 2014 to assess urinary arsenic excretion patterns of residents living near abandoned metal mines in South Korea. Demographic data such as gender, age, mine working history, period of residency, dietary patterns, smoking and alcohol use, and type of potable water consumed were obtaining using a questionnaire. Informed consent was also obtained from all study subjects (n = 119). Urinary arsenic species were quantified using high performance liquid chromatography (HPLC) and inductively coupled plasma mass spectrometry (ICP/MS). RESULTS The geometric mean of urinary arsenic (sum of dimethylarsinic acid, monomethylarsonic acid, As3+, and As5+) concentration was determined to be 131.98 μg/L (geometric mean; 95% CI, 116.72-149.23) while urinary inorganic arsenic (As3+ and As5+) concentration was 0.81 μg/L (95% CI, 0.53-1.23). 66.3% (n = 79) and 21.8% (n = 26) of these samples exceeded ATSDR reference values for urinary arsenic (>100 μg/L) and inorganic arsenic (>10 μg/L), respectively. Mean urinary arsenic concentrations (geometric mean, GM) were higher in women then in men, and increased with age. Of the five regions evaluated, while four regions had inorganic arsenic concentrations less than 0.40 μg/L, one region showed a significantly higher concentration (GM 15.48 μg/L; 95% CI, 7.51-31.91) which investigates further studies to identify etiological factors. CONCLUSION We propose that the observed elevation in urinary arsenic concentration in residents living near abandoned metal mines may be due to environmental contamination from the abandoned metal mine. TRIAL REGISTRATION Not Applicable (We do not have health care intervention on human participants).
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Affiliation(s)
- Jin-Yong Chung
- Heavy Metal Exposure Environmental Health Center, Dong-A University, Busan, Korea
| | - Byoung-Gwon Kim
- Heavy Metal Exposure Environmental Health Center, Dong-A University, Busan, Korea ; Department of Preventive Medicine, College of Medicine, Dong-A University, 26, Daesingongwon-ro, Seo-gu, Busan, Korea
| | | | - Jai-Dong Moon
- Department of Preventive and Occupational Medicine, Chonnam National University Hwasun Hospital, Hwasun, Korea
| | - Joon Sakong
- Department of Preventive Medicine, College of Medicine, Yeungnam University, Daegu, Korea
| | - Man Joong Jeon
- Department of Preventive Medicine, College of Medicine, Yeungnam University, Daegu, Korea
| | - Jung-Duck Park
- Department of Preventive Medicine, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Byung-Sun Choi
- Department of Preventive Medicine, College of Medicine, Chung-Ang University, Seoul, Korea
| | - Nam-Soo Kim
- Institute of Environmental and Occupational Medicine, College of Medicine, Soonchunhyang University, Asan, Chungnam Korea
| | - Seung-Do Yu
- National Institute of Environmental Research, Incheon, Korea
| | - Jung-Wook Seo
- Heavy Metal Exposure Environmental Health Center, Dong-A University, Busan, Korea
| | - Byeong-Jin Ye
- Heavy Metal Exposure Environmental Health Center, Dong-A University, Busan, Korea ; Department of Occupational and Environmental Medicine, Dong-A University Hospital, Busan, Korea
| | - Hyoun-Ju Lim
- Heavy Metal Exposure Environmental Health Center, Dong-A University, Busan, Korea
| | - Young-Seoub Hong
- Heavy Metal Exposure Environmental Health Center, Dong-A University, Busan, Korea ; Department of Preventive Medicine, College of Medicine, Dong-A University, 26, Daesingongwon-ro, Seo-gu, Busan, Korea
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Baek NJ, Park GI, Byun YS, Jeon MJ, Sakong J. Effects of computer familiarity and computer type on the performance of Korean computerized neurobehavioral test. Ann Occup Environ Med 2016; 28:44. [PMID: 27617101 PMCID: PMC5016868 DOI: 10.1186/s40557-016-0129-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 09/02/2016] [Indexed: 11/20/2022] Open
Abstract
Background It is thought that computer familiarity has increased significantly since 2004 as well as the use of computers. This study aimed to evaluate the effects of computer familiarity and types of keyboard and computer on the performance of the Korean computerized neurobehavioral test (KCNT), and to identify which parameters of KCNT were affected by aforementioned factors. Methods A total of 85 subjects were classified into three groups of computer familiarity by Korean typing speed. Their age, gender and the level of education were also collected. The parameters of KCNT included simple reaction time, choice reaction time, addition, symbol digit, and finger tapping speed. The test was conducted using three types of computers: a laptop computer, a laptop computer with a simplified keyboard, and a desktop computer with a simplified keyboard. Results Parameters including the simple reaction time, choice reaction time, addition, and symbol digit, and the finger tapping speed of non-dominant hand showed no significant differences in the results among the three groups by computer familiarity after age and educational years were controlled as covariates. The mean reaction time of the simple reaction time and the choice reaction time with a simplified keyboard was significantly shorter compared to that with a typical keyboard. With regard to type of computer, the mean reaction time of the simple reaction time and the choice reaction time was significantly reduced when performed with the desktop computer with a simplified keyboard. Conclusions Unlike previous study results, the choice reaction time, the addition, and the finger tapping speed of dominant hand were the only parameters affected by the computer familiarity. Both the type of keyboard and the type of computer significantly influenced the simple reaction time and the choice reaction time. Therefore, it is recommended to use a desktop computer with a simplified keyboard for such parameters.
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Affiliation(s)
- Nak Joon Baek
- Department of Occupational and Environmental Medicine, Yeungnam University Hospital, 170 Hyeonchung-ro, Nam-gu, Daegu, 42415 Republic of Korea
| | - Gun Il Park
- Department of Occupational and Environmental Medicine, Yeungnam University Hospital, 170 Hyeonchung-ro, Nam-gu, Daegu, 42415 Republic of Korea
| | - Young Seok Byun
- Department of Occupational and Environmental Medicine, Yeungnam University Hospital, 170 Hyeonchung-ro, Nam-gu, Daegu, 42415 Republic of Korea
| | - Man Joong Jeon
- Department of Occupational and Environmental Medicine, Yeungnam University Hospital, 170 Hyeonchung-ro, Nam-gu, Daegu, 42415 Republic of Korea ; Department of Preventive Medicine and Public Health, College of Medicine, Yeungnam University, 170 Hyeonchung-ro, Nam-gu, Daegu, 42415 Republic of Korea
| | - Joon Sakong
- Department of Occupational and Environmental Medicine, Yeungnam University Hospital, 170 Hyeonchung-ro, Nam-gu, Daegu, 42415 Republic of Korea ; Department of Preventive Medicine and Public Health, College of Medicine, Yeungnam University, 170 Hyeonchung-ro, Nam-gu, Daegu, 42415 Republic of Korea
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Jeong JU, Jeon MJ, Sakong J. The association between long working hours and the metabolic syndrome: evidences from the 5th Korean National Health and Nutrition Examination Survey of 2010 and 2012. Ann Occup Environ Med 2014; 26:53. [PMID: 25763189 PMCID: PMC4355009 DOI: 10.1186/s40557-014-0053-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Accepted: 11/08/2014] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVES This study was conducted in order to evaluate the association between the working hours of Korean employees and the metabolic syndrome and the effects of long working hours on metabolic syndrome based on the 5th Korean National Health and Nutrition Examination Survey (2010-2012). METHODS Based on the 5th Korean National Health and Nutrition Examination Survey (2010-2012), 4,456 Korean employees without shift work, aged over 15, who work 30 hours or more per week were targeted in this study. The association between the general characteristics, including age, smoking, alcohol drinking, exercise, and the metabolic syndrome criteria defined by International Diabetes Federation (IDF) and weekly working hours were analyzed. In addition, the association between weekly working hours and the metabolic syndrome of the subjects stratified by gender was analyzed through multiple logistic regression analyses and generalized linear mixed model after adjusting the general characteristics. RESULTS In the results of stratified analysis by gender, in male subjects, in comparison with the 30-39 weekly working hours group, there were no significant adjusted odds ratios to the other working hours groups. In female subjects, in comparison with the 30-39 weekly working hours group, there were no significant adjusted odds ratios to the other working hours groups. In addition, no trend associations were observed among weekly working hour groups in both stratified genders. CONCLUSION No significant differences in prevalence of metabolic syndrome of the subjects stratified by gender were found according to weekly increasing working hours. However, due to some limitations of this study, further prospective studies may be necessary for verification.
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Affiliation(s)
- Jae Uk Jeong
- />Department of Occupational and Environmental Medicine, Yeungnam University Hospital, 170, Hyeonchung-ro, Nam-gu, Daegu, 705-802 Republic of Korea
| | - Man Joong Jeon
- />Department of Occupational and Environmental Medicine, Yeungnam University Hospital, 170, Hyeonchung-ro, Nam-gu, Daegu, 705-802 Republic of Korea
- />Department of Preventive Medicine and Public Health, Yeungnam University College of Medicine, 170, Hyeonchung-ro, Nam-gu, Daegu, 705-802 Republic of Korea
| | - Joon Sakong
- />Department of Occupational and Environmental Medicine, Yeungnam University Hospital, 170, Hyeonchung-ro, Nam-gu, Daegu, 705-802 Republic of Korea
- />Department of Preventive Medicine and Public Health, Yeungnam University College of Medicine, 170, Hyeonchung-ro, Nam-gu, Daegu, 705-802 Republic of Korea
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Ye HH, Jeong JU, Baek NJ, Choi CY, Jeon MJ, Sakong J. A Case of Lead Poisoning due to a Mixture of Talisman Ash. Ann Occup Environ Med 2013; 25:37. [PMID: 24472628 PMCID: PMC3923338 DOI: 10.1186/2052-4374-25-37] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Accepted: 10/10/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Lead is a metal that has no biological function useful for the human body. In Korea, non-occupational exposure to lead has mostly occurred through taking oriental medicine. However, in this paper we report a case of lead poisoning caused by ingesting talisman material. CASE PRESENTATION A 16-year-old male patient complained of severe abdominal pain after taking cinnabar, a talisman material. He was diagnosed with lead poisoning accompanied by acute hepatitis. We confirmed that the cinnabar the patient took contained about 10% elemental lead. After symptom management, the patients' symptoms, liver function test results, and blood lead concentration level improved. CONCLUSION Lead poisoning can be accompanied by hepatitis, although rarely. As we have confirmed that cinnabar as a talisman material is harmful to the human body, measures to prevent its misuse are needed.
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Affiliation(s)
- Han Hui Ye
- Department of Occupational and Environmental Medicine, Yeungnam University Hospital, 317-1, Daemyungdong, Namgu, Daegu 705-717, Republic of Korea
| | - Jae Uk Jeong
- Department of Occupational and Environmental Medicine, Yeungnam University Hospital, 317-1, Daemyungdong, Namgu, Daegu 705-717, Republic of Korea
| | - Nak Joon Baek
- Department of Occupational and Environmental Medicine, Yeungnam University Hospital, 317-1, Daemyungdong, Namgu, Daegu 705-717, Republic of Korea
| | - Chang Yul Choi
- Department of Occupational and Environmental Medicine, Yeungnam University Hospital, 317-1, Daemyungdong, Namgu, Daegu 705-717, Republic of Korea
| | - Man Joong Jeon
- Department of Occupational and Environmental Medicine, Yeungnam University Hospital, 317-1, Daemyungdong, Namgu, Daegu 705-717, Republic of Korea
| | - Joon Sakong
- Department of Occupational and Environmental Medicine, Yeungnam University Hospital, 317-1, Daemyungdong, Namgu, Daegu 705-717, Republic of Korea
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Ye HH, Jeong JU, Jeon MJ, Sakong J. The Association between Shift Work and the Metabolic Syndrome in Female Workers. Ann Occup Environ Med 2013; 25:33. [PMID: 24472469 PMCID: PMC3923341 DOI: 10.1186/2052-4374-25-33] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Accepted: 10/08/2013] [Indexed: 01/09/2023] Open
Abstract
OBJECTIVE This study aimed to determine identify any association between shift work and the metabolic syndrome by comparing the prevalence rates of the metabolic syndrome in shift work groups and daytime work groups for female workers. METHODS Based on data from health examinations carried out from April to December of 2012, we selected as our subjects 254 female workers from the Daegu area Dyeing Industrial Complex. We diagnosed the metabolic syndrome using the examination results, and information about age, whether or not they did shift work, job type, smoking habits, drinking habits, exercise habits, and past medical history was collected through self-administered questionnaire surveys and face-to-face interviews. The variables found in a univariate analysis to be significant in the occurrence of the metabolic syndrome - age, drinking habits, exercise habits, and shift work - were included in a logistic regression analysis of the risk of the metabolic syndrome for female workers. RESULTS The prevalence rates of the metabolic syndrome for the total group of study subjects was 11.8%, for daytime workers was 2.8%, and for shift workers was 15.3%. A logistic regression analysis of the odds of the metabolic syndrome for female workers was conducted that included factors associated with the occurrence of the metabolic syndrome: age, drinking habits, exercise habits, and shift work. The results revealed that the odds ratio of the metabolic syndrome in the shift work group, 6.30 (95% CI 1.24-32.15), was significantly higher when compared with the daytime work group. CONCLUSION Shift work appears to have an association with the metabolic syndrome in female workers. Accordingly, we believe that the attention of government agencies and business owners is needed together with the individual practice of health behaviors to manage the metabolic syndrome for the prevention of cardiovascular disease in female shift workers.
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Affiliation(s)
| | | | - Man Joong Jeon
- Department of Occupational and Environmental Medicine, Yeungnam University Hospital, 317-1, Daemyungdong, Namgu, Daegu 705-717, Republic of Korea.
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Kim KY, Jeon SY, Jeon MJ, Lee KH, Lee SG, Kim D, Kang E, Bae SG, Kim J. Health impact assessment of free immunization program in Jinju City, Korea. J Prev Med Public Health 2012; 45:267-75. [PMID: 22880159 PMCID: PMC3412990 DOI: 10.3961/jpmph.2012.45.4.267] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2012] [Accepted: 05/14/2012] [Indexed: 11/09/2022] Open
Abstract
Objectives This study was conducted to assess the potential health impacts and improve the quality of the free immunization program in Jinju City by maximizing the predicted positive health gains and minimizing the negative health risks. Methods A steering committee was established in September 2010 to carry out the health impact assessment (HIA) and began the screening and scoping stages. In the appraisal stage, analysis of secondary data, a literature review, case studies, geographic information systems analysis, a questionnaire, and expert consultations were used. The results of the data collection and analyses were discussed during a workshop, after which recommendations were finalized in a written report. Results Increased access to immunization, comprehensive services provided by physicians, the strengthened role of the public health center in increasing immunization rates and services, and the ripple effect to other neighboring communities were identified as potential positive impacts. On the other hand, the program might be inaccessible to rural regions with no private clinics where there are more at-risk children, vaccine management and quality control at the clinics may be poor, and vaccines may be misused. Recommendations to maximize health gains and minimize risks were separately developed for the public health center and private clinics. Conclusions The HIA provided an opportunity for stakeholders to comprehensively overview the potential positive and negative impacts of the program before it was implemented. An HIA is a powerful tool that should be used when developing and implementing diverse health-related policies and programs in the community.
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Affiliation(s)
- Keon Yeop Kim
- Department of Preventive Medicine, Kyungpook National University School of Medicine, Daegu, Korea
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Ha G, Jeon MJ, Sakong J. Analysis of causes of injuries among children in Daegu, Korea. Korean J Pediatr 2011; 53:942-50. [PMID: 21218016 PMCID: PMC3012274 DOI: 10.3345/kjp.2010.53.11.942] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2010] [Revised: 07/14/2010] [Accepted: 08/04/2010] [Indexed: 11/27/2022]
Abstract
PURPOSE The purpose of this study was to determine the mechanisms and exact causes of injuries to children by analyzing the medical records of children who visited emergency medical centers. METHODS We reviewed the medical records of 7,114 pediatric patients (aged below 15 years) who visited the emergency care center (ECC) of a Yeungnam university hospital in Daegu between January 2007 and December 2009. RESULTS Among the pediatric patients who visited the ECC, 1,526 (27.2%) were admitted for injuries (boys, 979 [64.2%] and girls, 547 [35.8%]); the boy-to-girl ratio in this study population was 1.8:1. The proportion of boys was higher than that of girls over all age ranges, except for children aged less than 1 year. The highest incidence of injury due to slipping (20.5%) was noted in the 1-year-old group, and nearly half the total number of cases (49.3%) involved children who were under 4 years of age. Of the sites of injury, 999 involved the head and face (73.7%) and 134 involved the hand and wrist (9.9%). Seventy-one injuries (5.7%) occurred on the bed, 70 (5.6%) at the door, and 67 (5.3%) on the stairs. Of the approximately 250 types of injuries classified by cause, 17 accounted for 50.4% of all the injuries. CONCLUSION The cause of injury could be attributed to approximately 20 causes in more than half the cases of pediatric injuries. A classification of the types of injuries and the development of appropriate preventive strategies can help avoid such injuries.
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Affiliation(s)
- Geol Ha
- Department of Medicine, College of Medicine, Yeungnam University, Daegu, Korea
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12
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Affiliation(s)
- Yu Jin Lee
- National Medical Center, Seoul, Republic of Korea
| | - Young Ji Lee
- Yeungnam University Hospital, Daegu, Republic of Korea
| | - Man Joong Jeon
- Department of Preventive Medicine and Public Health, College of Medicine, Yeungnam University, Daegu, Republic of Korea
| | - Joon Sakong
- Department of Preventive Medicine and Public Health, College of Medicine, Yeungnam University, Daegu, Republic of Korea
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13
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Kim JM, Koh KW, Yu BC, Jeon MJ, Kim YJ, Kim YH. Assessment of community capacity building ability of health promotion workers in public health centers. J Prev Med Public Health 2009; 42:283-92. [PMID: 19806000 DOI: 10.3961/jpmph.2009.42.5.283] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
OBJECTIVES This study was performed to assess the community capacity building ability of health promotion workers of public health centers and to identify influential factors to the ability. METHODS The subjects were 43 public officers from 16 public health centers in Busan Metropolitan City. Questionnaire was developed based on 'Community Capacity Building Tool' of Public Health Agency of Canada which consists of 9 feathers. Each feather of capacity was assessed in 4 point rating scale. Univariate analysis by characteristics of subjects and multivariate analysis by multiple regression was done. RESULTS The mean score of the 9 features were 2.35. Among the 9 feathers, 'Obtaining resources' scored 3.0 point which was the highest but 'Community structure' scored 2.1 which was the lowest. The mean score of the feathers was relatively lower than that of Canadian data. The significant influential factors affecting community capacity building ability were 'Service length', 'Heath promotion skill level', 'Existence of an executive department' and 'Cooperative partnership for health promotion'. According to the result of multiple linear regression, the 'Existence of an executive department' had significant influence. CONCLUSIONS Community capacity building ability of subjects showed relatively lower scores in general. Building and activating an executive department and cooperative partnerships for health promotion may be helpful to achieve community capacity building ability.
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Affiliation(s)
- Jung Min Kim
- Department of Preventive Medicine, Kosin University College of Medicine, Busan, Korea
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14
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Lee JH, Lee JH, Lim SN, Kim DY, Kim SH, Lee YS, Kang YA, Kang SI, Jeon MJ, Seol M, Seo EJ, Chi HS, Park CJ, Jang S, Yun SC, Lee KH. Allogeneic hematopoietic cell transplantation for myelodysplastic syndrome: prognostic significance of pre-transplant IPSS score and comorbidity. Bone Marrow Transplant 2009; 45:450-7. [DOI: 10.1038/bmt.2009.190] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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15
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Bai SW, Jung HJ, Jeon MJ, Chung DJ, Kim SK, Kim JW. Surgical repair of anterior wall vaginal defects. Int J Gynaecol Obstet 2007; 98:147-50. [PMID: 17572421 DOI: 10.1016/j.ijgo.2007.04.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2006] [Revised: 03/29/2007] [Accepted: 04/11/2007] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To compare the clinical efficacy of 3 surgical procedures for central types of anterior vaginal wall defect. METHODS A total of 138 patients diagnosed with central types of anterior vaginal wall defect who underwent classic transvaginal repair (n=72), transvaginal repair with polypropylene mesh (n=28), and internal repair (n=38) were followed up for at least 1 year. RESULTS There were no differences in development of fever, vaginal erosion, detrusor overactivity, and voiding difficulty among the 3 groups, but the incidence of postoperative urinary tract infections was significantly higher in the polypropylene mesh repair group. The difference in preoperative and postoperative hemoglobin levels and wound infection incidence were significantly higher in the internal repair group. Moreover, the recurrence rate of the anterior vaginal wall defect was significantly higher at 1 year in the internal repair group. CONCLUSION Transvaginal surgical repair seems to be more efficacious than internal surgical repair for central types of anterior vaginal wall defects.
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Affiliation(s)
- S W Bai
- Department of Obstetrics and Gynecology, Yonsei University College of Medicine, Shinchon-dong, 134 Seodaemun-gu, Seoul 120-752, Korea.
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16
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Kim CM, Jeon MJ, Chung DJ, Kim SK, Kim JW, Bai SW. Risk factors for pelvic organ prolapse. Int J Gynaecol Obstet 2007; 98:248-51. [PMID: 17408669 DOI: 10.1016/j.ijgo.2007.02.019] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2007] [Revised: 02/22/2007] [Accepted: 02/22/2007] [Indexed: 11/24/2022]
Abstract
OBJECTIVES To evaluate the risk factors for pelvic organ prolapse (POP) and to determine the relationship between these risk factors and stage or other components of POP. METHODS 244 patients with primary POP and 314 women without POP were included. Age, parity, smoking, body mass index (BMI), menopause, and hormone replacement therapy (HRT) were investigated. RESULT Independent risk factors for POP included age over 70, parity higher than 3, and menopause. Age, parity, menopause, and HRT were significantly associated with stage of POP. Genital hiatus (GH) and perineal body (PB) showed a significant positive and negative correlation with age and parity, respectively. Menopause and HRT were also associated with them. CONCLUSION Age, parity and menopause are possible risk factors of POP and associated with the lengths of GH and PB in POP women. Further, these risk factors and HRT are significantly correlated with the severity of the disease.
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Affiliation(s)
- C M Kim
- Department of Obstetrics and Gynecology, Yonsei University College of Medicine, Seoul, Korea
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17
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Bai SW, Kim HY, Jeon MJ. Surgical morbidity in patients with pelvic organ prolapse at various ages. Int J Gynaecol Obstet 2007; 97:204-5. [PMID: 17379227 DOI: 10.1016/j.ijgo.2007.01.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2006] [Revised: 01/26/2007] [Accepted: 01/31/2007] [Indexed: 11/19/2022]
Affiliation(s)
- S W Bai
- Department of Obstetrics and Gynecology, Yonsei University College of Medicine, Seoul, South Korea.
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18
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Jeon MJ, Kim SK, Bai SW. Concomitant pelvic reconstructive surgery and transobturator tape for stress urinary incontinence. Int J Gynaecol Obstet 2006; 96:47-8. [PMID: 17196204 DOI: 10.1016/j.ijgo.2006.09.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2006] [Revised: 09/13/2006] [Accepted: 09/19/2006] [Indexed: 09/30/2022]
Affiliation(s)
- M J Jeon
- Department of Obstetrics and Gynecology, Yonsei University College of Medicine, Seoul, Korea
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Cho D, Lee JS, Yazer MH, Song JW, Shin MG, Shin JH, Suh SP, Jeon MJ, Kim JY, Park JT, Ryang DW. Chimerism and mosaicism are important causes of ABO phenotype and genotype discrepancies. Immunohematology 2006; 22:183-7. [PMID: 17430077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Discrepancies between blood group genotype and RBC phenotype are important to recognize when implementing DNA-based blood grouping techniques. This report describes two such cases involving the ABO blood group in the Korean population. Propositus #1 was a 22-year-old healthy man undergoing pretransfusion testing for minor surgery. Propositus #2 was a 23- year-old male blood donor. RBCs from both propositi were determined to be group AB and demonstrated unusual agglutination patterns on forward typing, which were inconsistent with their ABO genotype determined by allele-specific (AS) PCR. RBCs from propositus #1 demonstrated mixed field agglutination with both anti-A and -B, while RBCs from propositus #2 demonstrated mixed field only with anti-A reagents. Both had B/O genotypes by AS-PCR. Cloning and sequencing of ABO exons 6 and 7 revealed three alleles in both propositi: propositus #1: A102/B101/O04; propositus #2: A102/B101/O01. A panel of nine short-tandem repeat (STR) loci was tested on DNA extracted from blood, buccal mucosal cells, and hair from the propositi and on DNA isolated from their parents' blood. In all tissues tested from propositus #1, three loci demonstrated a double paternal and a single maternal DNA contribution, indicating that he was a chimera or a mosaic; in those from propositus # 2, one STR locus demonstrated a double paternal DNA contribution, indicating that he was a tetragametic chimera. Chimerism and mosaicism are uncommon but important causes of ABO genotype and phenotype discrepancies. The evaluation of patients and donors with unusual or unexpected serology in pretransfusion testing and consensus ABO alleles may include the evaluation of STR loci to detect these phenomena.
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Affiliation(s)
- D Cho
- Department of Laboratory Medicine, Chonnam National University Hospital & Medical School, Gwangju, Republic of Korea
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Cho D, Shin MG, Yazer MH, Kee SJ, Shin JH, Suh SP, Jeon MJ, Song JW, Ki CS, Ryang DW. The genetic and phenotypic basis of blood group A subtypes in Koreans. Transfus Med 2005; 15:329-34. [PMID: 16101812 DOI: 10.1111/j.0958-7578.2005.00598.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
A serological and genetic study of Korean blood donors with phenotypic group A subtypes was performed. There were 176 donors with phenotypic A subtypes identified. Exons 6 and 7 from 57 representative donors were sequenced. The A(var) allele (784 G > A) was cloned and sequenced, and a family study demonstrating its inheritance and unusual serological characteristics was performed. The A102 allele was the most frequently identified allele in phenotypically A2 (58%, 11/19) and A2B (68%, 17/25) donors. Anti-A1 was rarely present amongst A2 and A2B donors. The family study revealed that the A(var) allele was expressed as phenotype A(weak)B in A(var)/B heterozygote members, but as phenotype O in A(var)/O heterozygotes. The most frequent allele in Korean donors with the A2 phenotype differs from its Caucasian counterpart, as does the frequency of anti-A1. The A(var) allele demonstrates allelic enhancement in A(var)/B heterozygotes.
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Affiliation(s)
- D Cho
- Department of Laboratory Medicine, Chonnam National University Hospital and Medical School, Gwangju, South Korea
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21
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Bai SW, Jeon MJ, Kim JY, Chung KA, Kim SK, Park KH. Relationship between stress urinary incontinence and pelvic organ prolapse. Int Urogynecol J 2002; 13:256-60; discussion 260. [PMID: 12189431 DOI: 10.1007/s001920200053] [Citation(s) in RCA: 110] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
We investigated the objective coexisting rate of stress urinary incontinence and pelvic organ prolapse, and also compared the treatment outcomes in patients who had both conditions, treated by a corrective operation on the basis of a precise preoperative evaluation. We reviewed 97 cases who underwent urodynamic studies and evaluation of the prolapse according to the Pelvic Organ Prolapse Quantification (POP-Q) system from among patients who were admitted for treatment of either stress urinary incontinence or pelvic organ prolapse. A Burch urethropexy, either alone or with a parvaginal repair, was done to correct the stress urinary incontinence, as well as additional operations to correct prolapse of stage II or more. The patients were evaluated postoperatively for the stress urinary incontinence and the degree of prolapse at every visit. Nineteen of 30 (63.3%) patients who were admitted with stress urinary incontinence had a coexisting pelvic organ prolapse, most often of the anterior wall. In 42 of 67 (62.7%) cases admitted with pelvic organ prolapse there was a coexisting stress urinary incontinence. A total of 61 patients who had both conditions were followed for 12 months postoperatively. The recurrence rate of stress urinary incontinence and prolapse (all of which were stage II) was 3.3% and 18.0%, respectively. It was noted that the greater the preoperative stage, the higher the recurrence rate (stage II 4.35%; stage III 25.0%; stage IV 33.6%). The coexisting rates of pelvic organ prolapse in patients having stress urinary incontinence, and stress urinary incontinence in patients having a pelvic organ prolapse, were both high. Therefore, when a preoperative evaluation that simultaneously considers both conditions and the correcting surgery is based on this evaluation, the recurrence rates of both conditions could be lowered.
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Affiliation(s)
- S W Bai
- Department of Obstetrics and Gynecology, College of Medicine, Yonsei University, Seoul, Korea.
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22
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Han K, Jeon MJ, Kim SH, Ki D, Bahn JH, Lee KS, Park J, Choi SY. Efficient intracellular delivery of an exogenous protein GFP with genetically fused basic oligopeptides. Mol Cells 2001; 12:267-71. [PMID: 11710533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023] Open
Abstract
Several oligopeptides, derived from certain proteins, translocate as a form fused to small molecules or exogenous proteins across the plasma membrane into cells. Some of these oligopeptides, the so-called protein-transduction domains (PTDs), contain a high proportion of basic residues. The translocation of some of these basic PTDs, such as oligoarginines, has been studied as chemically fused forms to other organic compounds. In this study, we also tested to determine whether or not oligoarginines, when fused genetically to an exogenous protein such as GFP, are also able to translocate efficiently across the plasma membrane. The oligoarginine Rn (n = 5,6,7,8,9)-GFP fusion proteins were translocated quite efficiently, and the transduction efficiency increased in proportion to the number of arginine residues. However, the cellular uptake of the oligolysine-GFP fusion proteins was less efficient than that of the corresponding oligoarginine-GFP fusion proteins. When fused to GFP, the translocation efficiency of R5 was similar to that of Tat(49-57)(RKKRRQRRR). This finding suggests that the arginine homo-oligopeptide is more efficient than other PTDs which contain a mixture of basic residues. On the other hand, both the K9- and Tat(49-57)-GFP fusion proteins were transduced with similar efficiencies. It appears that basic oligopeptides may be useful for the efficient translocation of diverse exogenous proteins as genetically fused forms.
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Affiliation(s)
- K Han
- Department of Genetic Engineering, Division of Life Sciences, Hallym University, Chunchon, Korea
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Han K, Jeon MJ, Kim KA, Park J, Choi SY. Efficient intracellular delivery of GFP by homeodomains of Drosophila Fushi-tarazu and Engrailed proteins. Mol Cells 2000; 10:728-32. [PMID: 11211880 DOI: 10.1007/s10059-000-0728-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
The 60 amino acid long homeodomain of Antennapedia (Antp), either alone or as a fusion protein with 30-40 amino acid long foreign polypeptides, has been reported to cross biological membranes by an energy- and receptor-protein-independent mechanism. Moreover, the 16 amino acid long third helix of the Antp homeodomain, so-called penetratin, possesses translocation properties when fused to fewer than 100 amino acids as well. These findings led us to study whether such a protein tansduction property is shared by other homeodomains. We report here that homeodomains of two homeoproteins, Fushi-tarazu and Engrailed, are able to transduce a 238 amino acid long green fluorescent protein into cultured cells as efficiently as other well-known protein transduction domains, such as an internal oligopeptide of Tat and penetratin. These findings suggest that such transduction activity of homeodomains might have some physiological roles and that it can be exploited for development of efficient transduction vectors for research use and protein therapy.
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Affiliation(s)
- K Han
- Department of Genetic Engineering, Hallym University, Chunchon, Korea
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Baek G, Yoon S, Jeon MJ, Han S, Yim J, Baek K, Yoon J, Han K. An analysis of two tandem promoters of the Drosophila purple gene. Mol Cells 1998; 8:685-90. [PMID: 9895120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023] Open
Abstract
We have analyzed two tandem promoters, separated by only about 400 bp, of the purple (pr) gene of Drosophila melanogaster, by fusing them to the firefly luciferase reporter gene and employing a transient expression assay with Drosophila S2 cells. Both the distal promoter and the proximal promoter were found to function in S2 cells and an about 700 bp long region (-270 to +421), containing both promoters, was sufficient to effect maximal promoter activity. When the two promoters were analyzed separately, the distal promoter was found to be much stronger in its function than the proximal promoter. At least three different kinds of cis elements near the transcription start site appear to play crucial roles in driving constitutive expression from the distal promoter. On the other hand, only a single cis element, which may play a role in tissue-specific expression, appears to be important for the activity of the proximal promoter in S2 cells. We propose that the clustering of important cis elements near the transcription start sites may be responsible for the selective regulation of the two tandem promoters.
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Affiliation(s)
- G Baek
- Department of Genetic Engineering, Hallym University, Chunchon, Korea
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Affiliation(s)
- Man Joong Jeon
- Department of Preventive Medicine, College of Medicine, Yeungnam University Taegu, Korea
| | - Joon Sakong
- Department of Preventive Medicine, College of Medicine, Yeungnam University Taegu, Korea
| | - Pock Soo Kang
- Department of Preventive Medicine, College of Medicine, Yeungnam University Taegu, Korea
| | - Moon Chan Kim
- Department of Preventive Medicine, College of Medicine, Yeungnam University Taegu, Korea
| | - Hak Soo Kim
- Department of Preventive Medicine, College of Medicine, Yeungnam University Taegu, Korea
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Kim CY, Sakong J, Chung JH, Joo R, Jeon MJ, Sung NJ, Kim SK. Neurobehavioral Performance Test of Workers Exposed to Mixed Organic Solvents. Yeungnam Univ J Med 1997. [DOI: 10.12701/yujm.1997.14.2.314] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Chang Yoon Kim
- Department of Preventive Medicine and Public Health College of Medicine, Yeungnam University Taegu, Korea
| | - Joon Sakong
- Department of Preventive Medicine and Public Health College of Medicine, Yeungnam University Taegu, Korea
| | - Jong Hak Chung
- Department of Preventive Medicine and Public Health College of Medicine, Yeungnam University Taegu, Korea
| | - Ree Joo
- Department of Preventive Medicine and Public Health College of Medicine, Yeungnam University Taegu, Korea
| | - Man Joong Jeon
- Department of Preventive Medicine and Public Health College of Medicine, Yeungnam University Taegu, Korea
| | - Nag Jung Sung
- Department of Preventive Medicine and Public Health College of Medicine, Yeungnam University Taegu, Korea
| | - Sang Kyu Kim
- Department of Preventive Medicine and Public Health College of Medicine, Yeungnam University Taegu, Korea
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