1.Glutathione’s Role in Liver Metabolism and Hangover Symptom Relief: Dysregulation of Protein S-Glutathionylation and Antioxidant Enzymes
Hwa-Young LEE ; Geum-Hwa LEE ; Do-Sung KIM ; Young Jae LIM ; Boram CHO ; Hojung JUNG ; Hyun-shik CHOI ; Soonok SA ; Wookyung CHUNG ; Hyewon LEE ; Myoung Ja CHUNG ; Junghyun KIM ; Han-Jung CHAE
Biomolecules & Therapeutics 2025;33(1):117-128
Hangovers from alcohol consumption cause symptoms like headaches, nausea, and fatigue, disrupting daily activities and overall well-being. Over time, they can also lead to inflammation and oxidative stress. Effective hangover relief alleviates symptoms, prevents dehydration, and replenishes energy needed for daily tasks. Natural foods considered high in antioxidants and antiinflammatory properties may aid in the hepatic breakdown of alcohol. The study aims to investigate the impact of glutathione or its enriched yeast extract, which is recognized for its antioxidant characteristics, on alcohol metabolism and alleviating hangovers in a rat model exposed to binge drinking. In this study, glutathione and its enriched yeast extract controlled hangover behaviour patterns, including locomotor activity. Additionally, it enhanced the activities of alcohol dehydrogenase (ADH) and aldehyde dehydrogenase (ALDH) following ethanol ingestion (3 g/kg). Further, the incorporation of glutathione led to an increase in the expression of antioxidant enzymes, such as SOD and catalase, by activating the nuclear erythroid 2-related factor 2 (Nrf2) signaling pathway.This activation reduced the excessive production of reactive oxygen species (ROS) and malondialdehyde. Next, glutathione modulated the activity of cytochrome P450 2E1 (CYP2E1) and the protein expressions of Bax and Bcl2. Besides, in vitro and in vivo investigations with glutathione demonstrated a regulating effect on the pan-s-glutathionylation and its associated protein expression, glutaredoxin 1 (Grx1), glutathione-S-transferase Pi (GST-π), and glutathione reductase (GR). Together, these findings suggest that glutathione or its enriched yeast extract as a beneficial dietary supplement for alleviating hangover symptoms by enhancing alcohol metabolism and its associated Nrf2/Keap1 signalings.
2.Glutathione’s Role in Liver Metabolism and Hangover Symptom Relief: Dysregulation of Protein S-Glutathionylation and Antioxidant Enzymes
Hwa-Young LEE ; Geum-Hwa LEE ; Do-Sung KIM ; Young Jae LIM ; Boram CHO ; Hojung JUNG ; Hyun-shik CHOI ; Soonok SA ; Wookyung CHUNG ; Hyewon LEE ; Myoung Ja CHUNG ; Junghyun KIM ; Han-Jung CHAE
Biomolecules & Therapeutics 2025;33(1):117-128
Hangovers from alcohol consumption cause symptoms like headaches, nausea, and fatigue, disrupting daily activities and overall well-being. Over time, they can also lead to inflammation and oxidative stress. Effective hangover relief alleviates symptoms, prevents dehydration, and replenishes energy needed for daily tasks. Natural foods considered high in antioxidants and antiinflammatory properties may aid in the hepatic breakdown of alcohol. The study aims to investigate the impact of glutathione or its enriched yeast extract, which is recognized for its antioxidant characteristics, on alcohol metabolism and alleviating hangovers in a rat model exposed to binge drinking. In this study, glutathione and its enriched yeast extract controlled hangover behaviour patterns, including locomotor activity. Additionally, it enhanced the activities of alcohol dehydrogenase (ADH) and aldehyde dehydrogenase (ALDH) following ethanol ingestion (3 g/kg). Further, the incorporation of glutathione led to an increase in the expression of antioxidant enzymes, such as SOD and catalase, by activating the nuclear erythroid 2-related factor 2 (Nrf2) signaling pathway.This activation reduced the excessive production of reactive oxygen species (ROS) and malondialdehyde. Next, glutathione modulated the activity of cytochrome P450 2E1 (CYP2E1) and the protein expressions of Bax and Bcl2. Besides, in vitro and in vivo investigations with glutathione demonstrated a regulating effect on the pan-s-glutathionylation and its associated protein expression, glutaredoxin 1 (Grx1), glutathione-S-transferase Pi (GST-π), and glutathione reductase (GR). Together, these findings suggest that glutathione or its enriched yeast extract as a beneficial dietary supplement for alleviating hangover symptoms by enhancing alcohol metabolism and its associated Nrf2/Keap1 signalings.
3.Glutathione’s Role in Liver Metabolism and Hangover Symptom Relief: Dysregulation of Protein S-Glutathionylation and Antioxidant Enzymes
Hwa-Young LEE ; Geum-Hwa LEE ; Do-Sung KIM ; Young Jae LIM ; Boram CHO ; Hojung JUNG ; Hyun-shik CHOI ; Soonok SA ; Wookyung CHUNG ; Hyewon LEE ; Myoung Ja CHUNG ; Junghyun KIM ; Han-Jung CHAE
Biomolecules & Therapeutics 2025;33(1):117-128
Hangovers from alcohol consumption cause symptoms like headaches, nausea, and fatigue, disrupting daily activities and overall well-being. Over time, they can also lead to inflammation and oxidative stress. Effective hangover relief alleviates symptoms, prevents dehydration, and replenishes energy needed for daily tasks. Natural foods considered high in antioxidants and antiinflammatory properties may aid in the hepatic breakdown of alcohol. The study aims to investigate the impact of glutathione or its enriched yeast extract, which is recognized for its antioxidant characteristics, on alcohol metabolism and alleviating hangovers in a rat model exposed to binge drinking. In this study, glutathione and its enriched yeast extract controlled hangover behaviour patterns, including locomotor activity. Additionally, it enhanced the activities of alcohol dehydrogenase (ADH) and aldehyde dehydrogenase (ALDH) following ethanol ingestion (3 g/kg). Further, the incorporation of glutathione led to an increase in the expression of antioxidant enzymes, such as SOD and catalase, by activating the nuclear erythroid 2-related factor 2 (Nrf2) signaling pathway.This activation reduced the excessive production of reactive oxygen species (ROS) and malondialdehyde. Next, glutathione modulated the activity of cytochrome P450 2E1 (CYP2E1) and the protein expressions of Bax and Bcl2. Besides, in vitro and in vivo investigations with glutathione demonstrated a regulating effect on the pan-s-glutathionylation and its associated protein expression, glutaredoxin 1 (Grx1), glutathione-S-transferase Pi (GST-π), and glutathione reductase (GR). Together, these findings suggest that glutathione or its enriched yeast extract as a beneficial dietary supplement for alleviating hangover symptoms by enhancing alcohol metabolism and its associated Nrf2/Keap1 signalings.
4.Effect of nutrition support team on 28-day mortality in Korean patients with acute respiratory failure
Inhan LEE ; Junghyun KIM ; Mihyun KU ; Yurim CHOI ; Sohyun PARK ; Jihyeon BANG ; Joohae KIM
Acute and Critical Care 2025;40(2):313-321
Background:
Providing optimal nutrition to patients with acute respiratory failure is difficult because nutritional requirements vary according to disease severity and comorbidities. In 2021, the National Medical Center initiated a protocol for screening upon admission and regular monitoring by a multidisciplinary nutritional support team (NST), for all patients in the medical intensive care unit (ICU). This study aimed to evaluate the effects of routine NST monitoring and active intervention on the clinical outcomes of patients with acute respiratory failure.
Methods:
Patients with acute respiratory failure requiring high-flow nasal cannula, non-invasive ventilation, or mechanical ventilation were included. The primary outcome was 28-day mortality after ICU admission. Secondary outcomes included the supplied/target calorie ratio, supplied/target protein ratio on day 7, and complications.
Results:
In total, 152 patients were included in the analysis. The patients were divided into a pre-monitoring (n=96) and post-monitoring groups (n=56). More patients in the post-monitoring group received NST intervention and had earlier initiation of enteral feeding. In survival analysis, 28-day mortality was significantly lower in post-monitoring group (adjusted hazard ratio, 0.42; 95% CI, 0.24–0.74). The ratio of achievement for required calories and protein on day 7 was higher, but not significantly, in the post-monitoring group. No significant differences were observed in the incidence of complications.
Conclusions
Regular NST monitoring in the ICU could have contributed to a reduced risk of 28-day mortality in critically ill patients with acute respiratory failure.
5.Novel Deep Learning-Based Vocal Biomarkers for Stress Detection in Koreans
Junghyun NAMKUNG ; Seok Min KIM ; Won Ik CHO ; So Young YOO ; Beomjun MIN ; Sang Yool LEE ; Ji-Hye LEE ; Heyeon PARK ; Soyoung BAIK ; Je-Yeon YUN ; Nam Soo KIM ; Jeong-Hyun KIM
Psychiatry Investigation 2024;21(11):1228-1237
Objective:
The rapid societal changes have underscored the importance of effective stress detection and management. Chronic mental stress significantly contributes to both physical and psychological illnesses. However, many individuals often remain unaware of their stress levels until they face physical health issues, highlighting the necessity for regular stress monitoring. This study aimed to investigate the effectiveness of vocal biomarkers in detecting stress levels among healthy Korean employees and to contribute to digital healthcare solutions.
Methods:
We conducted a multi-center clinical study by collecting voice recordings from 115 healthy Korean employees under both relaxed and stress-induced conditions. Stress was induced using the socially evaluated cold pressor test. The Emphasized Channel Attention, Propagation and Aggregation in Time delay neural network (ECAPA-TDNN) deep learning architecture, renowned for its advanced capabilities in analyzing person-specific voice features, was employed to develop stress prediction scores.
Results:
The proposed model achieved a 70% accuracy rate in detecting stress. This performance underscores the potential of vocal biomarkers as a convenient and effective tool for individuals to self-monitor and manage their stress levels within digital healthcare frameworks.
Conclusion
The findings emphasize the promise of voice-based mental stress assessments within the Korean population and the importance of continued research on vocal biomarkers across diverse linguistic demographics.
6.Novel Deep Learning-Based Vocal Biomarkers for Stress Detection in Koreans
Junghyun NAMKUNG ; Seok Min KIM ; Won Ik CHO ; So Young YOO ; Beomjun MIN ; Sang Yool LEE ; Ji-Hye LEE ; Heyeon PARK ; Soyoung BAIK ; Je-Yeon YUN ; Nam Soo KIM ; Jeong-Hyun KIM
Psychiatry Investigation 2024;21(11):1228-1237
Objective:
The rapid societal changes have underscored the importance of effective stress detection and management. Chronic mental stress significantly contributes to both physical and psychological illnesses. However, many individuals often remain unaware of their stress levels until they face physical health issues, highlighting the necessity for regular stress monitoring. This study aimed to investigate the effectiveness of vocal biomarkers in detecting stress levels among healthy Korean employees and to contribute to digital healthcare solutions.
Methods:
We conducted a multi-center clinical study by collecting voice recordings from 115 healthy Korean employees under both relaxed and stress-induced conditions. Stress was induced using the socially evaluated cold pressor test. The Emphasized Channel Attention, Propagation and Aggregation in Time delay neural network (ECAPA-TDNN) deep learning architecture, renowned for its advanced capabilities in analyzing person-specific voice features, was employed to develop stress prediction scores.
Results:
The proposed model achieved a 70% accuracy rate in detecting stress. This performance underscores the potential of vocal biomarkers as a convenient and effective tool for individuals to self-monitor and manage their stress levels within digital healthcare frameworks.
Conclusion
The findings emphasize the promise of voice-based mental stress assessments within the Korean population and the importance of continued research on vocal biomarkers across diverse linguistic demographics.
7.Novel Deep Learning-Based Vocal Biomarkers for Stress Detection in Koreans
Junghyun NAMKUNG ; Seok Min KIM ; Won Ik CHO ; So Young YOO ; Beomjun MIN ; Sang Yool LEE ; Ji-Hye LEE ; Heyeon PARK ; Soyoung BAIK ; Je-Yeon YUN ; Nam Soo KIM ; Jeong-Hyun KIM
Psychiatry Investigation 2024;21(11):1228-1237
Objective:
The rapid societal changes have underscored the importance of effective stress detection and management. Chronic mental stress significantly contributes to both physical and psychological illnesses. However, many individuals often remain unaware of their stress levels until they face physical health issues, highlighting the necessity for regular stress monitoring. This study aimed to investigate the effectiveness of vocal biomarkers in detecting stress levels among healthy Korean employees and to contribute to digital healthcare solutions.
Methods:
We conducted a multi-center clinical study by collecting voice recordings from 115 healthy Korean employees under both relaxed and stress-induced conditions. Stress was induced using the socially evaluated cold pressor test. The Emphasized Channel Attention, Propagation and Aggregation in Time delay neural network (ECAPA-TDNN) deep learning architecture, renowned for its advanced capabilities in analyzing person-specific voice features, was employed to develop stress prediction scores.
Results:
The proposed model achieved a 70% accuracy rate in detecting stress. This performance underscores the potential of vocal biomarkers as a convenient and effective tool for individuals to self-monitor and manage their stress levels within digital healthcare frameworks.
Conclusion
The findings emphasize the promise of voice-based mental stress assessments within the Korean population and the importance of continued research on vocal biomarkers across diverse linguistic demographics.
8.Secondary Malignancies in Multiple Myeloma in Korean Patients: A Nationwide Population-Based Study
Boyoung PARK ; Eunyoung LEE ; Junghyun YOON ; YoungJu PARK ; Hyeon-Seok EOM
Cancer Research and Treatment 2024;56(3):936-944
Purpose:
This study investigated the incidence of secondary malignancy in multiple myeloma (MM) patients compared with that in the general population using a population-based database covering all residents in Korea.
Materials and Methods:
Based on the national health insurance system in Korea, all people primarily diagnosed with MM between January 1, 2010 to December 31, 2018 were identified. A total of 9,985 MM patients aged ≥ 20 years in Korea were included.
Results:
Among them, 237 (2.4%) developed secondary malignancies by 2018. The standardized incidence rates (SIRs) of all secondary malignancies in MM patients were 0.87 (95% confidence interval [CI], 0.76 to 0.98), with a higher incidence of hematologic malignancies than in the general population with an SIR of 3.80 (95% CI, 2.61 to 5.00). The incidence rates of both lymphoid malignancy (SIR, 3.56; 95% CI, 2.31 to 4.82) and myeloid malignancy (SIR, 3.78; 95% CI, 1.16 to 6.39) were higher in MM patients than in the general population. In contrast, a lower incidence of solid cancer was observed in MM patients than in the general population (SIR, 0.76, 95% CI, 0.65 to 0.86). There was no significant difference in survival in MM patients without secondary malignancies, with hematologic malignancy, and with solid cancer (p=0.413).
Conclusion
MM patients had a greater risk of secondary malignancies, especially hematologic malignancies, than the general population. Future studies with a focus on analyzing patients’ history, treatment details, and genetic information in various stages of MM patients are needed to better understand the mechanism behind this increased risk.
9.2023 Clinical Practice Guidelines for Diabetes Management in Korea: Full Version Recommendation of the Korean Diabetes Association
Jun Sung MOON ; Shinae KANG ; Jong Han CHOI ; Kyung Ae LEE ; Joon Ho MOON ; Suk CHON ; Dae Jung KIM ; Hyun Jin KIM ; Ji A SEO ; Mee Kyoung KIM ; Jeong Hyun LIM ; Yoon Ju SONG ; Ye Seul YANG ; Jae Hyeon KIM ; You-Bin LEE ; Junghyun NOH ; Kyu Yeon HUR ; Jong Suk PARK ; Sang Youl RHEE ; Hae Jin KIM ; Hyun Min KIM ; Jung Hae KO ; Nam Hoon KIM ; Chong Hwa KIM ; Jeeyun AHN ; Tae Jung OH ; Soo-Kyung KIM ; Jaehyun KIM ; Eugene HAN ; Sang-Man JIN ; Jaehyun BAE ; Eonju JEON ; Ji Min KIM ; Seon Mee KANG ; Jung Hwan PARK ; Jae-Seung YUN ; Bong-Soo CHA ; Min Kyong MOON ; Byung-Wan LEE
Diabetes & Metabolism Journal 2024;48(4):546-708
10.Real-World Treatment Patterns according to Clinical Practice Guidelines in Patients with Type 2 Diabetes Mellitus and Established Cardiovascular Disease in Korea: Multicenter, Retrospective, Observational Study
Ye Seul YANG ; Nam Hoon KIM ; Jong Ha BAEK ; Seung-Hyun KO ; Jang Won SON ; Seung-Hwan LEE ; Sang Youl RHEE ; Soo-Kyung KIM ; Tae Seo SOHN ; Ji Eun JUN ; In-Kyung JEONG ; Chong Hwa KIM ; Keeho SONG ; Eun-Jung RHEE ; Junghyun NOH ; Kyu Yeon HUR ;
Diabetes & Metabolism Journal 2024;48(2):279-289
Background:
Recent diabetes management guidelines recommend that sodium-glucose cotransporter 2 inhibitors (SGLT2is) or glucagon-like peptide 1 receptor agonists (GLP-1RAs) with proven cardiovascular benefits should be prioritized for combination therapy in patients with type 2 diabetes mellitus (T2DM) and established cardiovascular disease (CVD). This study was aimed at evaluating SGLT2i or GLP-1RA usage rates and various related factors in patients with T2DM and established CVD.
Methods:
We enrolled adults with T2DM aged ≥30 years who were hospitalized due to established CVD from January 2019 to May 2020 at 13 secondary and tertiary hospitals in Korea in this retrospective observational study.
Results:
Overall, 2,050 patients were eligible for analysis among 2,107 enrolled patients. The mean patient age, diabetes duration, and glycosylated hemoglobin level were 70.0 years, 12.0 years, and 7.5%, respectively. During the mean follow-up duration of 9.7 months, 25.7% of the patients were prescribed SGLT2is after CVD events. However, only 1.8% were prescribed GLP-1RAs. Compared with SGLT2i non-users, SGLT2i users were more frequently male and obese. Furthermore, they had a shorter diabetes duration but showed worse glycemic control and better renal function at the time of the event. GLP-1RA users had a longer duration of diabetes and worse glycemic control at the time of the event than GLP-1RA non-users.
Conclusion
The SGLT2i or GLP-1RA prescription rates were suboptimal in patients with T2DM and established CVD. Sex, body mass index, diabetes duration, glycemic control, and renal function were associated with the use of these agents.

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