1.Laparoscopic radical hysterectomy without uterine manipulator or vaginal tube use
Eun Jung YANG ; A Jin LEE ; Kyeong A SO ; Sun Joo LEE ; Tae Jin KIM ; Seung-Hyuk SHIM
Journal of Gynecologic Oncology 2023;34(5):e63-
In the Laparoscopic Approach to Cervical Cancer trial, minimally invasive surgery (MIS) has been associated with significantly lower disease-free survival and overall survival rates. The proposed reasons for the increased recurrence and mortality associated with MIS are uterine manipulation, the effect of insufflation gas (CO2), and intracorporeal colpotomy. We applied 2 techniques during surgery to reduce tumor spillage in laparoscopic radical hysterectomy (LRH), which included avoiding using a uterine manipulator and containing the colpotomy using an endoscopic stapler. We aimed to introduce an easy and comfortable traction method with tagged uterine sutures instead of a manipulator or vaginal tube for minimally invasive radical hysterectomy (RH). The patient underwent LRH. After entering the peritoneal cavity, tubal ligation was performed with an endoscopic clip to prevent tumor spillage via the fallopian tubes. Then, the uterine fundus was tied with needle-straightened multifilament Vicryl 2-0, and the tagged uterus was manipulated. Thereafter, pelvic lymphadenectomy was performed before RH. Thereafter, we performed intracorporeal colpotomy by resecting the vagina twice using an endoscopic stapler. Finally, the stapled vaginal stump was resected to retrieve the specimen via the vaginal opening using monopolar scissors after the vagina was washed several times with sterile water. After removing the specimen, the vaginal stump was endoscopically closed with a barbed suture. LRH can be feasibly performed in patients with uterine cervical neoplasm by retracting tagged uterine sutures without the use of a uterine manipulator.
2.Research Trends and Meta-Analysis of Variables Related to Depression in Korean Medical Students
Hyun-Gyung YANG ; Kangmoon KIM ; Kyeong Ryong LEE ; Sun-Geun BAEK
Korean Medical Education Review 2023;25(3):243-257
This study aimed to analyze trends in research on depression among medical students in Korea and to conduct a meta-analysis to determine the average correlation coefficients between depression and related variables. In total, 38 quantitative studies (four theses and 34 journal articles) published between January 1995 and February 2023 were analyzed according to publication year, subjects, analysis methods, and measurement tools. Among them, 15 studies that provided numerical information on the relationships between depression and variables such as self-esteem, social support, grade point average (GPA), stress, and academic stress were selected for meta-analysis. The main findings of this study were as follows. First, quantitative research on depression among medical students began in earnest in 2009, and cross-sectional studies targeting first-year and second-year medical students were the most prevalent. Furthermore, the most commonly used analysis method was difference testing, and the Beck Depression Inventory was the most frequently used measurement tool. Second, the mean correlation coefficients between depression and stress, self-esteem, social support, academic stress, and GPA were 0.534, 0.532, 0.465, 0.390, and 0.102, respectively. The results for self-esteem, stress, and academic stress showed substantial heterogeneity, while those for social support and GPA showed little heterogeneity. These findings suggest that educational interventions, such as social support improvement programs, are necessary to prevent depression among medical students.
3.Clinical Results of Drug-Coated Balloon Treatment in a Large-Scale Multicenter Korean Registry Study
Sang Yeub LEE ; Yun-Kyeong CHO ; Sang-Wook KIM ; Young-Joon HONG ; Bon-Kwon KOO ; Jang-Whan BAE ; Seung-Hwan LEE ; Tae Hyun YANG ; Hun Sik PARK ; Si Wan CHOI ; Do-Sun LIM ; Soo-Joong KIM ; Young Hoon JEONG ; Hyun-Jong LEE ; Kwan Yong LEE ; Eun-Seok SHIN ; Ung KIM ; Moo Hyun KIM ; Chang-Wook NAM ; Seung-Ho HUR ; Doo-Il KIM ;
Korean Circulation Journal 2022;52(6):444-454
Background and Objectives:
The aim of this study was to demonstrate the efficacy and safety of treatment with drug-coated balloon (DCB) in a large real-world population.
Methods:
Patients treated with DCBs were included in a multicenter observational registry that enrolled patients from 18 hospitals in Korea between January 2009 and December 2017. The primary outcome was target lesion failure (TLF) defined as a composite of cardiovascular death, target vessel myocardial infarction, and clinically indicated target lesion revascularization at 12 months.
Results:
The study included 2,509 patients with 2,666 DCB-treated coronary artery lesions (1,688 [63.3%] with in-stent restenosis [ISR] lesions vs. 978 [36.7%] with de novo lesions).The mean age with standard deviation was 65.7±11.3 years; 65.7% of the patients were men.At 12 months, the primary outcome, TLF, occurred in 179 (6.7%), 151 (8.9%), 28 (2.9%) patients among the total, ISR, and de novo lesion populations, respectively. A history of hypertension, diabetes, acute coronary syndrome, previous coronary artery bypass graft, reduced left ventricular ejection fraction, B2C lesion and ISR lesion were independent predictors of 12 months TLF in the overall study population.
Conclusions
This large multicenter DCB registry study revealed the favorable clinical outcome of DCB treatment in real-world practice in patient with ISR lesion as well as small de novo coronary lesion.
4.Causal Association Between Alcohol Consumption and Atrial Fibrillation: A Mendelian Randomization Study
Jung-Ho YANG ; Ji-An JEONG ; Sun-Seog KWEON ; Young-Hoon LEE ; Seong-Woo CHOI ; So-Yeon RYU ; Hae-Sung NAM ; Kyeong-Soo PARK ; Hye-Yeon KIM ; Min-Ho SHIN
Korean Circulation Journal 2022;52(3):220-230
Background and Objectives:
Previous observational studies presented a positive association between alcohol and atrial fibrillation (AF). However, previous studies using genetic polymorphisms on the causal relationship between alcohol consumption and AF have reported conflicting results. This study aimed to evaluate the causality between alcohol consumption and AF using the aldehyde dehydrogenase 2 (ALDH2) rs671 polymorphism, which is the genetic variant with the most potent effect on drinking behavior.
Methods:
A total of 8,964 participants from the Dong-gu Study were included in the present study. The causal association between alcohol consumption and AF was evaluated through a Mendelian randomization (MR) analysis using the ALDH2 rs671 polymorphism as an instrumental variable.
Results:
No significant relationship between alcohol consumption and AF was found in the observational analysis. However, the genetic analysis using the ALDH2 polymorphism showed a significant association in men. In the MR analysis, genetically predicted daily alcohol consumption was positively related to AF.
Conclusions
MR analysis revealed a significant association between the amount of alcohol consumption and AF, which suggests that the association may be causal.
5.Psychometric Properties of Behavioral Checklist for Coping with Stress in Patients with Mood Disorders
Hyun Ju LIM ; Eunsoo MOON ; Hwagyu SUH ; Sun Kyeong YANG ; Je Min PARK ; Byung Dae LEE ; Young Min LEE ; Hee Jeong JEONG ; Soo Yeon KIM ; Kang Yoon LEE ; Min YOON
Psychiatry Investigation 2021;18(2):147-156
Objective:
Even though the importance of stress-coping, there is no reliable and valid scale to measure the stress-coping behavior yet. The purpose of this study is to explore the psychometric properties of Behavioral Checklist for Coping with Stress (BCCS).
Methods:
A total of 458 subjects including healthy subjects and patients with bipolar or depressive disorders were analyzed. The reliability and validity of BCCS were examined by Chronbach’s alpha and exploratory factor analysis using Principal Component Analysis. In order to evaluate criterion-related validity, the Pearson’s correlation analyses between factors of BCCS and relevant scales were performed.
Results:
BCCS showed good Chronobach’s alpha (0.695–0.833) and had acceptable validity. Factor 1 and factor 4 of BCCS were negatively correlated with depression, anxiety and positivity correlated with task and problem-solving, avoidance, tension-releasing copings in common. Factor 2 and 3 were positively correlated with impulsivity, emotionality, avoidance, behavioral and verbal aggression and tension-releasing copings in common. Different from factor 2, factor 3 was positively correlated with depression, anxiety and anger-suppression.
Conclusion
The results of this study suggest that this BCCS might be a reliable and valid scale for measuring stress-coping behaviors. This scale could facilitate research to investigate clinical implications related to behavioral stress-coping.
6.Alpha-lipoic acid protects human dopaminergic neuronal cells against hydrogen peroxide-induced cell injury by inhibiting autophagy and apoptosis
Kyeong-Rok KANG ; Jae-Sung KIM ; Tae-Hyeon KIM ; Jeong-Yeon SEO ; HyangI LIM ; Jong-Hyun PARK ; Kwang Yeol YANG ; Sun-Kyoung YU ; Heung-Joong KIM ; Chun Sung KIM ; Hong Sung CHUN ; Dong-Seol LEE ; Joo-Cheol PARK ; Do Kyung KIM
International Journal of Oral Biology 2021;46(1):15-22
Alpha-lipoic acid (ALA) is a naturally occurring antioxidant and has been previously used to treat diabetes and cardiovascular disease. However, the autophagy effects of ALA against oxidative stress-induced dopaminergic neuronal cell injury remain unclear. The aim of this study was to investigate the role of ALA in autophagy and apoptosis against oxidative stress in the SH-SY5Y human dopaminergic neuronal cell line. We examined SH-SY5Y phenotypes using the 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide assay (cell viability/proliferation), 4′,6-diamidino-2-phenylindole dihydrochloride nuclear staining, Live/Dead cell assay, cellular reactive oxygen species (ROS) assay, immunoblotting, and immunocytochemistry. Our data showed ALA attenuated hydrogen peroxide (H2O2)-induced ROS generation and cell death. ALA effectively suppressed Bax up-regulation and Bcl-2 and BclxL down-regulation. Furthermore, ALA increased the expression of the antioxidant enzyme, heme oxygenase-1. Moreover, the expression of Beclin-1 and LC-3 autophagy biomarkers was decreased by ALA in our cell model. Combined, these data suggest ALA protects human dopaminergic neuronal cells against H2O2-induced cell injury by inhibiting autophagy and apoptosis.
7.Association between Alcohol Consumption and Serum Cortisol Levels:a Mendelian Randomization Study
Jung-Ho YANG ; Sun-Seog KWEON ; Young-Hoon LEE ; Seong-Woo CHOI ; So-Yeon RYU ; Hae-Sung NAM ; Kyeong-Soo PARK ; Hye-Yeon KIM ; Min-Ho SHIN
Journal of Korean Medical Science 2021;36(30):e195-
Background:
Several studies have reported conflicting results regarding the relationship between alcohol consumption and cortisol levels. However, the causality between alcohol consumption and cortisol levels has not been evaluated.
Methods:
This study examined 8,922 participants from the Dong-gu Study. The aldehyde dehydrogenase 2 (ALDH2) rs671 polymorphism was used as an instrumental variable for alcohol consumption. The association between the genetically predicted alcohol consumption and cortisol level was evaluated with Mendelian randomization (MR) using two-stage least squares regression.
Results:
Alcohol consumption was positively associated with the serum cortisol level in both sexes in the observational analysis. In the MR analysis, the genetically predicted alcohol consumption was positively related to the cortisol level in men, with cortisol levels increasing by 0.18 µg/dL per drink per day. However, there was no relationship in women in the MR analysis.
Conclusion
The predicted alcohol consumption according to the ALDH2 rs671 polymorphism was positively related to the cortisol levels, suggesting a causal relationship between alcohol consumption and cortisol levels.
8.Relationship between Stress-Coping and Personality in Patients with Bipolar and Depressive Disorders
Hyun Ju LIM ; Eunsoo MOON ; Hwagyu SUH ; Sun Kyeong YANG ; Je Min PARK ; Byung Dae LEE ; Young Min LEE ; Hee Jeong JEONG ; Soo Yeon KIM ; Kang Yoon LEE ; Young In CHUNG
Mood and Emotion 2021;19(2):35-46
Background:
Personality might be one of the important factors related to stress-coping in mood disorders. This study aimed to investigate the relationship between personality and stress-coping strategies in patients with bipolar and depressive disorders.
Methods:
A total of 195 patients diagnosed with bipolar and depressive disorders according to the criteria mentioned in Diagnostic and Statistical Manual of Mental disorders’ 5th edition were included. Pearson’s correlation and multiple regression analyses were used to analyze the relationship between personality, measured by Temperament and Character Inventory and NEO-Five Factor Inventory, and coping strategies, measured by Coping Inventory for Stressful Situations.
Results:
Self-directedness was reported to be positively associated with task-oriented coping in bipolar disorders, and harm avoidance was negatively associated with task-oriented coping in depressive disorders. Beck Depression Inventory score, neuroticism, and extroversion were found to be positively associated with emotion-oriented coping in bipolar disorders, and neuroticism was positively associated with emotion-oriented coping in depressive disorders. Extroversion was reported to be positively associated with avoidance-oriented coping in bipolar disorders, and extroversion, novelty seeking, and reward dependence were positively associated with avoidance-oriented coping in depressive disorders.
Conclusion
This study concluded that the relationship between personality and stress-coping strategies may vary based on the type of mood disorder that is diagnosed. The interaction between personality and stress-coping might be considered for the modification of coping strategies in mood disorders.
9.Alpha-lipoic acid protects human dopaminergic neuronal cells against hydrogen peroxide-induced cell injury by inhibiting autophagy and apoptosis
Kyeong-Rok KANG ; Jae-Sung KIM ; Tae-Hyeon KIM ; Jeong-Yeon SEO ; HyangI LIM ; Jong-Hyun PARK ; Kwang Yeol YANG ; Sun-Kyoung YU ; Heung-Joong KIM ; Chun Sung KIM ; Hong Sung CHUN ; Dong-Seol LEE ; Joo-Cheol PARK ; Do Kyung KIM
International Journal of Oral Biology 2021;46(1):15-22
Alpha-lipoic acid (ALA) is a naturally occurring antioxidant and has been previously used to treat diabetes and cardiovascular disease. However, the autophagy effects of ALA against oxidative stress-induced dopaminergic neuronal cell injury remain unclear. The aim of this study was to investigate the role of ALA in autophagy and apoptosis against oxidative stress in the SH-SY5Y human dopaminergic neuronal cell line. We examined SH-SY5Y phenotypes using the 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide assay (cell viability/proliferation), 4′,6-diamidino-2-phenylindole dihydrochloride nuclear staining, Live/Dead cell assay, cellular reactive oxygen species (ROS) assay, immunoblotting, and immunocytochemistry. Our data showed ALA attenuated hydrogen peroxide (H2O2)-induced ROS generation and cell death. ALA effectively suppressed Bax up-regulation and Bcl-2 and BclxL down-regulation. Furthermore, ALA increased the expression of the antioxidant enzyme, heme oxygenase-1. Moreover, the expression of Beclin-1 and LC-3 autophagy biomarkers was decreased by ALA in our cell model. Combined, these data suggest ALA protects human dopaminergic neuronal cells against H2O2-induced cell injury by inhibiting autophagy and apoptosis.
10.Association between Alcohol Consumption and Serum Cortisol Levels:a Mendelian Randomization Study
Jung-Ho YANG ; Sun-Seog KWEON ; Young-Hoon LEE ; Seong-Woo CHOI ; So-Yeon RYU ; Hae-Sung NAM ; Kyeong-Soo PARK ; Hye-Yeon KIM ; Min-Ho SHIN
Journal of Korean Medical Science 2021;36(30):e195-
Background:
Several studies have reported conflicting results regarding the relationship between alcohol consumption and cortisol levels. However, the causality between alcohol consumption and cortisol levels has not been evaluated.
Methods:
This study examined 8,922 participants from the Dong-gu Study. The aldehyde dehydrogenase 2 (ALDH2) rs671 polymorphism was used as an instrumental variable for alcohol consumption. The association between the genetically predicted alcohol consumption and cortisol level was evaluated with Mendelian randomization (MR) using two-stage least squares regression.
Results:
Alcohol consumption was positively associated with the serum cortisol level in both sexes in the observational analysis. In the MR analysis, the genetically predicted alcohol consumption was positively related to the cortisol level in men, with cortisol levels increasing by 0.18 µg/dL per drink per day. However, there was no relationship in women in the MR analysis.
Conclusion
The predicted alcohol consumption according to the ALDH2 rs671 polymorphism was positively related to the cortisol levels, suggesting a causal relationship between alcohol consumption and cortisol levels.

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