1.The association of shift work and TyG index among male workers in a chemical plant of Korea: a cross-sectional study
Gwangin BAEK ; Yong-Jin LEE ; Soon-Chan KWON ; Young-Sun MIN ; Jisuk YUN ; Tae Jin AHN ; Eun-Chul JANG
Annals of Occupational and Environmental Medicine 2024;36(1):e18-
Disturbance of circadian rhythms caused by shift work has adverse effects on insulin resistance. Many previous studies have confirmed that shift work and insulin resistance are related using homeostasis model assessment-insulin resistance, one of the insulin resistance indicators. However, the triglycerides and glucose index (TyG index) has recently been studied as an insulin resistance indicator. The aim of this study is to investigate the association of shift work and TyG index, one of the indirect indicators of insulin resistance, using results of health checkups in one workplace. Based on medical examination data collected in February 2019, a total of 3,794 subjects from one chemical plant in Korea were selected for this study. Cut-off value of TyG index for predicting development of diabetes mellitus (DM) was 4.69. A multiple logistic regression analysis was performed after adjusting for age, employment period, obesity, abdominal obesity, smoking, drinking, physical activity, hypertension, stroke, heart disease. As a result of logistic regression analysis, compared to day workers, odds ratio (OR) with a TyG index above cut-off value for predicting development of DM in shift workers was 1.220 after adjusting for age, employment period, obesity, abdominal obesity, smoking, drinking, physical activity, hypertension, stroke, heart disease (Model 1, OR: 1.276; 95% confidence interval [CI]: 1.099–1.482; Model 2, OR: 1.232; 95% CI: 1.055–1.438; Model 3, OR: 1.220, 95% CI: 1.030–1.444). There was a significant association between shift work and TyG index among male workers in a chemical plant. More research studies on the association between shift work and TyG index are needed in the future.
2.The association of shift work and TyG index among male workers in a chemical plant of Korea: a cross-sectional study
Gwangin BAEK ; Yong-Jin LEE ; Soon-Chan KWON ; Young-Sun MIN ; Jisuk YUN ; Tae Jin AHN ; Eun-Chul JANG
Annals of Occupational and Environmental Medicine 2024;36(1):e18-
Disturbance of circadian rhythms caused by shift work has adverse effects on insulin resistance. Many previous studies have confirmed that shift work and insulin resistance are related using homeostasis model assessment-insulin resistance, one of the insulin resistance indicators. However, the triglycerides and glucose index (TyG index) has recently been studied as an insulin resistance indicator. The aim of this study is to investigate the association of shift work and TyG index, one of the indirect indicators of insulin resistance, using results of health checkups in one workplace. Based on medical examination data collected in February 2019, a total of 3,794 subjects from one chemical plant in Korea were selected for this study. Cut-off value of TyG index for predicting development of diabetes mellitus (DM) was 4.69. A multiple logistic regression analysis was performed after adjusting for age, employment period, obesity, abdominal obesity, smoking, drinking, physical activity, hypertension, stroke, heart disease. As a result of logistic regression analysis, compared to day workers, odds ratio (OR) with a TyG index above cut-off value for predicting development of DM in shift workers was 1.220 after adjusting for age, employment period, obesity, abdominal obesity, smoking, drinking, physical activity, hypertension, stroke, heart disease (Model 1, OR: 1.276; 95% confidence interval [CI]: 1.099–1.482; Model 2, OR: 1.232; 95% CI: 1.055–1.438; Model 3, OR: 1.220, 95% CI: 1.030–1.444). There was a significant association between shift work and TyG index among male workers in a chemical plant. More research studies on the association between shift work and TyG index are needed in the future.
3.The association of shift work and TyG index among male workers in a chemical plant of Korea: a cross-sectional study
Gwangin BAEK ; Yong-Jin LEE ; Soon-Chan KWON ; Young-Sun MIN ; Jisuk YUN ; Tae Jin AHN ; Eun-Chul JANG
Annals of Occupational and Environmental Medicine 2024;36(1):e18-
Disturbance of circadian rhythms caused by shift work has adverse effects on insulin resistance. Many previous studies have confirmed that shift work and insulin resistance are related using homeostasis model assessment-insulin resistance, one of the insulin resistance indicators. However, the triglycerides and glucose index (TyG index) has recently been studied as an insulin resistance indicator. The aim of this study is to investigate the association of shift work and TyG index, one of the indirect indicators of insulin resistance, using results of health checkups in one workplace. Based on medical examination data collected in February 2019, a total of 3,794 subjects from one chemical plant in Korea were selected for this study. Cut-off value of TyG index for predicting development of diabetes mellitus (DM) was 4.69. A multiple logistic regression analysis was performed after adjusting for age, employment period, obesity, abdominal obesity, smoking, drinking, physical activity, hypertension, stroke, heart disease. As a result of logistic regression analysis, compared to day workers, odds ratio (OR) with a TyG index above cut-off value for predicting development of DM in shift workers was 1.220 after adjusting for age, employment period, obesity, abdominal obesity, smoking, drinking, physical activity, hypertension, stroke, heart disease (Model 1, OR: 1.276; 95% confidence interval [CI]: 1.099–1.482; Model 2, OR: 1.232; 95% CI: 1.055–1.438; Model 3, OR: 1.220, 95% CI: 1.030–1.444). There was a significant association between shift work and TyG index among male workers in a chemical plant. More research studies on the association between shift work and TyG index are needed in the future.
4.Improved anti-fibrotic effects by combined treatments of simvastatin and NS-398 in experimental liver fibrosis models
Seong Hee KANG ; Hyung Joon YIM ; Ji-won HWANG ; Mi-jung KIM ; Young-Sun LEE ; Young Kul JUNG ; Hyungshin YIM ; Baek-Hui KIM ; Hae-Chul PARK ; Yeon Seok SEO ; Ji Hoon KIM ; Jong Eun YEON ; Soon Ho UM ; Kwan Soo BYUN
The Korean Journal of Internal Medicine 2022;37(4):745-756
Background/Aims:
Efficient anti-fibrotic therapies are required for the treatment of liver cirrhosis. Hydroxymethylglutaryl-coenzyme A reductase inhibitors (statins) and cyclooxygenase-2 (COX-2) inhibitors have been reported to have anti-fibrotic effects. Here, we investigated whether combined treatment with a statin and a COX-2 inhibitor has synergistic anti-fibrotic effects.
Methods:
The effects of treatment strategies incorporating both simvastatin and a COX-2 inhibitor, NS-398, were investigated using an immortalized human hepatic stellate cell line (LX-2) and a hepatic fibrosis mouse model developed using thioacetamide (TAA) in drinking water. Cellular proliferation was investigated via 5-bromo-2-deoxyuridine uptake. Pro- and anti-apoptotic factors were investigated through Western blotting and real-time polymerase chain reaction analysis.
Results:
The evaluation of the anti-proliferative effects on LX-2 cells showed that the observed effects were more pronounced with combination therapy than with single-drug therapy. Moreover, hepatic fibrosis and collagen deposition decreased significantly in TAA-treated mice in response to the combined treatment strategy. The mechanisms underlying the anti-fibrotic effects of the combination therapy were investigated. The effects of the combination therapy were correlated with increased expression levels of extracellular signal-regulated kinase 1/2 signaling molecules, upregulation of the Bax/Bcl-2 signaling pathway, inhibition of the transforming growth factor-β signaling pathway, and inhibition of tissue inhibitor of matrix metalloproteinases 1 and 2.
Conclusions
The combination of simvastatin and NS-398 resulted in a synergistic anti-fibrotic effect through multiple pathways. These findings offer a theoretical insight into the possible clinical application of this strategy for the treatment of advanced liver diseases with hepatic fibrosis.
5.Survival Benefits From Surgery for Stage IVa Head and Neck Squamous Cell Carcinoma: A Multi-Institutional Analysis of 1,033 Cases
Jun-Ook PARK ; Young Min PARK ; Woo-Jin JEONG ; Yoo Seob SHIN ; Yong Tae HONG ; Ik Joon CHOI ; Ji Won KIM ; Seung Hoon WOO ; Yeon Soo KIM ; Jae Won CHANG ; Min-Sik KIM ; Kwang-Yoon JUNG ; Soon-Hyun AHN ; Chul-Ho KIM ; Ki Hwan HONG ; Phil-Sang CHUNG ; Young-Mo KIM ; Se-Heon KIM ; Seung-Kuk BAEK
Clinical and Experimental Otorhinolaryngology 2021;14(2):225-234
Objectives:
. Head and neck squamous cell carcinomas (HNSCs) are frequently diagnosed at the locoregional advanced stage (stage IVa), but controversy remains regarding whether stage IVa HSNCs should be treated with upfront surgery or definitive chemoradiation therapy (CRT). The purpose of this study was to compare overall survival (OS) and disease-free survival (DFS) in patients with stage IVa HNSC treated primarily by surgery with curative intent with/without (neo)adjuvant treatment (surgery group) versus those treated primarily with CRT (CRT group).
Methods:
. We reviewed data of 1,033 patients with stage IVa HNSC treated with curative intent at 17 cancer centers between 2010 and 2016.
Results:
. Among 1,033 patients, 765 (74.1%) received upfront surgery and 268 (25.9%) received CRT. The 5-year OS and DFS rates were 64.4% and 62.0% in the surgery group and 49.5% and 45.4% in the CRT group, respectively. In multivariate analyses, OS and DFS were better in the surgery group than in the CRT group (odds ratio [OR] for death, 0.762; 95% confidence interval [CI], 0.592–0.981; OR for recurrence, 0.628; 95% CI, 0.492–0.802). In subgroup analyses, the OS and DFS of patients with oropharyngeal cancer were better in the surgery group (OR for death, 0.548; 95% CI, 0.341–0.879; OR for recurrence, 0.598; 95% CI, 0.377–0.948). In the surgery group, patients with laryngeal cancer showed better OS (OR for death, 0.432; 95% CI, 0.211–0.882), while those with hypopharyngeal cancer DFS was improved (OR for recurrence, 0.506; 95% CI, 0.328–0.780).
Conclusion
. A survival benefit from surgery may be achieved even in patients with stage IVa HNSC, particularly those with oropharyngeal and laryngeal cancer. Surgery led to a reduction in the recurrence rate in patients with hypopharyngeal cancer.
6.Survival Benefits From Surgery for Stage IVa Head and Neck Squamous Cell Carcinoma: A Multi-Institutional Analysis of 1,033 Cases
Jun-Ook PARK ; Young Min PARK ; Woo-Jin JEONG ; Yoo Seob SHIN ; Yong Tae HONG ; Ik Joon CHOI ; Ji Won KIM ; Seung Hoon WOO ; Yeon Soo KIM ; Jae Won CHANG ; Min-Sik KIM ; Kwang-Yoon JUNG ; Soon-Hyun AHN ; Chul-Ho KIM ; Ki Hwan HONG ; Phil-Sang CHUNG ; Young-Mo KIM ; Se-Heon KIM ; Seung-Kuk BAEK
Clinical and Experimental Otorhinolaryngology 2021;14(2):225-234
Objectives:
. Head and neck squamous cell carcinomas (HNSCs) are frequently diagnosed at the locoregional advanced stage (stage IVa), but controversy remains regarding whether stage IVa HSNCs should be treated with upfront surgery or definitive chemoradiation therapy (CRT). The purpose of this study was to compare overall survival (OS) and disease-free survival (DFS) in patients with stage IVa HNSC treated primarily by surgery with curative intent with/without (neo)adjuvant treatment (surgery group) versus those treated primarily with CRT (CRT group).
Methods:
. We reviewed data of 1,033 patients with stage IVa HNSC treated with curative intent at 17 cancer centers between 2010 and 2016.
Results:
. Among 1,033 patients, 765 (74.1%) received upfront surgery and 268 (25.9%) received CRT. The 5-year OS and DFS rates were 64.4% and 62.0% in the surgery group and 49.5% and 45.4% in the CRT group, respectively. In multivariate analyses, OS and DFS were better in the surgery group than in the CRT group (odds ratio [OR] for death, 0.762; 95% confidence interval [CI], 0.592–0.981; OR for recurrence, 0.628; 95% CI, 0.492–0.802). In subgroup analyses, the OS and DFS of patients with oropharyngeal cancer were better in the surgery group (OR for death, 0.548; 95% CI, 0.341–0.879; OR for recurrence, 0.598; 95% CI, 0.377–0.948). In the surgery group, patients with laryngeal cancer showed better OS (OR for death, 0.432; 95% CI, 0.211–0.882), while those with hypopharyngeal cancer DFS was improved (OR for recurrence, 0.506; 95% CI, 0.328–0.780).
Conclusion
. A survival benefit from surgery may be achieved even in patients with stage IVa HNSC, particularly those with oropharyngeal and laryngeal cancer. Surgery led to a reduction in the recurrence rate in patients with hypopharyngeal cancer.
8.Preoperative neutrophil-lymphocyte ratio and CEA is associated with poor prognosis in patients with synchronous colorectal cancer liver metastasis
Hyunjung KIM ; Hae Il JUNG ; Soon Ha KWON ; Sang Ho BAE ; Hyung Chul KIM ; Moo Jun BAEK ; Moon Soo LEE
Annals of Surgical Treatment and Research 2019;96(4):191-200
PURPOSE: Recently, the neutrophil-to-lymphocyte ratio (NLR), an inflammatory response marker, has been reported to be associated with the prognosis in patients with various type of cancer. However, there have been no studies until now that have explored the prognostic role of combined detection of NLR and CEA in patients with synchronous liver-limited colorectal metastases (sCRLM). METHODS: Eighty-three patients who histologically diagnosed as sCRLM were selected. Their laboratory and clinical data were collected retrospectively. Using receiver operating characteristic curve analysis, the cutoff value of NLR was calculated based on which patients were assigned to a high NLR (more than 1.94) group and low NLR (less than 1.94) group. A cutoff value of 100 ng/mL for serum CEA level was used in light of the previous literature. RESULTS: CEA level and Poorly differentiated histology of colon cancer was significantly correlated with high NLR (P = 0.005 and P = 0.048, respectively). The multivariate analysis identified the high NLR as independent prognostic factors for OS and DFS in all patients (P = 0.010 and P = 0.006, respectively). Patients with both low levels of NLR and CEA had a significantly longer OS and DFS (P = 0.026 and P = 0.009, respectively). CONCLUSION: In conclusion, elevated preoperative NLR is strongly correlated with both survival and recurrence in patients who have been diagnosed with resectable sCRLM. The combination of NLR and CEA level could be a more powerful prognostic marker than NLR alone.
Colonic Neoplasms
;
Colorectal Neoplasms
;
Humans
;
Liver
;
Multivariate Analysis
;
Neoplasm Metastasis
;
Neutrophils
;
Prognosis
;
Recurrence
;
Retrospective Studies
;
ROC Curve
9.Clinical Practice Guideline for Cardiac Rehabilitation in Korea
Chul KIM ; Jidong SUNG ; Jong Hwa LEE ; Won Seok KIM ; Goo Joo LEE ; Sungju JEE ; Il Young JUNG ; Ueon Woo RAH ; Byung Ok KIM ; Kyoung Hyo CHOI ; Bum Sun KWON ; Seung Don YOO ; Heui Je BANG ; Hyung Ik SHIN ; Yong Wook KIM ; Heeyoune JUNG ; Eung Ju KIM ; Jung Hwan LEE ; In Hyun JUNG ; Jae Seung JUNG ; Jong Young LEE ; Jae Young HAN ; Eun Young HAN ; Yu Hui WON ; Woosik HAN ; Sora BAEK ; Kyung Lim JOA ; Sook Joung LEE ; Ae Ryoung KIM ; So Young LEE ; Jihee KIM ; Hee Eun CHOI ; Byeong Ju LEE ; Soon KIM
The Korean Journal of Thoracic and Cardiovascular Surgery 2019;52(4):248-285
BACKGROUND:
Though clinical practice guidelines (CPGs) for cardiac rehabilitation (CR) are an effective and widely used treatment method worldwide, they are as yet not widely accepted in Korea. Given that cardiovascular disease is the second leading cause of death in Korea, it is urgent that CR programs be developed. In 2008, the Government of Korea implemented CR programs at 11 university hospitals as part of its Regional Cardio-Cerebrovascular Center Project, and 3 additional medical facilities will be added in 2019. In addition, owing to the promotion of CR nationwide and the introduction of CR insurance benefits, 40 medical institutions nationwide have begun CR programs even as a growing number of medical institutions are preparing to offer CR. The purpose of this research was to develop evidence-based CPGs to support CR implementation in Korea.
METHODS:
This study is based on an analysis of CPGs elsewhere in the world, an extensive literature search, a systematic analysis of multiple randomized control trials, and a CPG management, development, and assessment committee comprised of 33 authors—primarily rehabilitation specialists, cardiologists, and thoracic surgeons in 21 university hospitals and 2 general hospitals. Twelve consultants, primarily rehabilitation, sports medicine, and preventive medicine specialists, CPG experts, nurses, physical therapists, clinical nutritionists, and library and information experts participated in the research and development of these CPGs. After the draft guidelines were developed, 3 rounds of public hearings were held with staff members from relevant academic societies and stakeholders, after which the guidelines were further reviewed and modified.
RESULTS:
CR involves a more cost-effective use of healthcare resources relative to that of general treatments, and the exercise component of CR lowers cardiovascular mortality and readmission rates, regardless of the type of coronary heart disease and type and setting of CR.
CONCLUSION
Individualized CR programs should be considered together with various factors, including differences in heart function and lifestyle, and doing so will boost participation and adherence with the CR program, ultimately meeting the final goals of the program, namely reducing the recurrence of myocardial infarction and mortality rates.
10.Clinical Practice Guideline for Cardiac Rehabilitation in Korea: Recommendations for Cardiac Rehabilitation and Secondary Prevention after Acute Coronary Syndrome
Chul KIM ; Jidong SUNG ; Jong Hwa LEE ; Won Seok KIM ; Goo Joo LEE ; Sungju JEE ; Il Young JUNG ; Ueon Woo RAH ; Byung Ok KIM ; Kyoung Hyo CHOI ; Bum Sun KWON ; Seung Don YOO ; Heui Je BANG ; Hyung Ik SHIN ; Yong Wook KIM ; Heeyoune JUNG ; Eung Ju KIM ; Jung Hwan LEE ; In Hyun JUNG ; Jae Seung JUNG ; Jong Young LEE ; Jae Young HAN ; Eun Young HAN ; Yu Hui WON ; Woosik HAN ; Sora BAEK ; Kyung Lim JOA ; Sook Joung LEE ; Ae Ryoung KIM ; So Young LEE ; Jihee KIM ; Hee Eun CHOI ; Byeong Ju LEE ; Soon KIM
Korean Circulation Journal 2019;49(11):1066-1111
Though clinical practice guidelines (CPGs) for cardiac rehabilitation (CR) are an effective and widely used treatment method worldwide, they are as yet not widely accepted in Korea. Given that cardiovascular (CV) disease is the second leading cause of death in Korea, it is urgent that CR programs be developed. In 2008, the Government of Korea implemented CR programs at 11 university hospitals as part of its Regional Cardio-Cerebrovascular Center Project, and 3 additional medical facilities will be added in 2019. In addition, owing to the promotion of CR nationwide and the introduction of CR insurance benefits, 40 medical institutions nationwide have begun CR programs even as a growing number of medical institutions are preparing to offer CR. The purpose of this research was to develop evidence-based CPGs to support CR implementation in Korea. This study is based on an analysis of CPGs elsewhere in the world, an extensive literature search, a systematic analysis of multiple randomized control trials, and a CPG management, development, and assessment committee comprised of thirty-three authors—primarily rehabilitation specialists, cardiologists, and thoracic surgeons in 21 university hospitals and 2 general hospitals. Twelve consultants, primarily rehabilitation, sports medicine, and preventive medicine specialists, CPG experts, nurses, physical therapists, clinical nutritionists, and library and information experts participated in the research and development of these CPGs. After the draft guidelines were developed, 3 rounds of public hearings were held with staff members from relevant academic societies and stakeholders, after which the guidelines were further reviewed and modified. CR involves a more cost-effective use of healthcare resources relative to that of general treatments, and the exercise component of CR lowers CV mortality and readmission rates, regardless of the type of coronary heart disease and type and setting of CR. Individualized CR programs should be considered together with various factors, including differences in heart function and lifestyle, and doing so will boost participation and adherence with the CR program, ultimately meeting the final goals of the program, namely reducing the recurrence of myocardial infarction and mortality rates.
Acute Coronary Syndrome
;
Cause of Death
;
Consultants
;
Coronary Disease
;
Delivery of Health Care
;
Heart
;
Hospitals, General
;
Hospitals, University
;
Humans
;
Insurance Benefits
;
Korea
;
Life Style
;
Methods
;
Mortality
;
Myocardial Infarction
;
Nutritionists
;
Physical Therapists
;
Preventive Medicine
;
Recurrence
;
Rehabilitation
;
Secondary Prevention
;
Specialization
;
Sports Medicine
;
Surgeons

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