1.Intravital Two-photon Imaging of Dynamic Alteration of Hepatic Lipid Droplets in Fasted and Refed State
Journal of Lipid and Atherosclerosis 2021;10(3):313-321
Objective:
The liver plays a central role in lipid metabolism. During fasting and feeding, the fatty acid trafficking between adipose tissue and liver induces accumulation and dissociation of dynamic hepatic lipid droplets (LDs). Herein, we established an intravital 2-photon imaging technique to longitudinally visualize the dynamic in vivo alteration of hepatic LD deposition during fasting and refeeding in the liver of live mouse.
Methods:
Intravital 2-photon imaging of liver was performed to observe hepatic LD alteration induced by fasting for different periods of time, 12, 24, and 48 hours followed by refeeding. Hepatic LDs were fluorescently labelled in vivo by intravenous injection of Seoul-Flour 44 and visualized by custom-built intravital 2-photon microscope.
Results:
Significant increases of the number and size of hepatic LDs were observed by intravital 2-photon imaging of the liver after 12 hours of fasting. The degree of hepatic LD accumulation continuously increased with fasting up to 48 hours. Remarkably, with refeeding for 24 hours, the hepatic LDs accumulated by fasting were fully dissociated and the LD occupancy in the liver was recovered to the normal state.
Conclusion
Utilizing intravital 2-photon microscope with in vivo systemic fluorescent labeling of LD in live mice, dynamic alterations of hepatic LDs such as accumulation and dissociation by fasting and refeeding were successfully visualized at a subcellular level in vivo. The established method enabling the in vivo visualization of LDs will be a useful tool to investigate the pathophysiology of various diseases associated with dysregulated lipid metabolism.
2.Comparison of the Characteristics Between Readmitted and Non-Readmitted Elderly Heart Failure Patients: A Study on Outpatients at a University Hospital
Journal of Korean Clinical Nursing Research 2025;31(1):15-23
Purpose:
This study aimed to establish a basis for minimizing readmission of patients with heart failure by comparing their demographic, clinical, psychosocial, and behavioral characteristics based on the presence or absence of readmission.
Methods:
This retrospective descriptive study included 160 elderly patients with heart failure aged 60 years and older, who regularly visited the cardiovascular outpatient clinic in K hospital in Daegu.Data were collected from April to December 2021 using self-report questionnaires including the Lubben Social Network Scale, the Scale of Positive and Negative Experience, and European Heart Failure Self-care Behaviour 9-Item Tools, which were translated in the Korean context. IBM SPSS Statistics 25 was used for analysis, and descriptive statistics, χ2 test, Fisher’s exact test, t-test, and logistic regression analysis were conducted.
Results:
The factors that significantly affected the readmission of elderly patients with heart failure were social network and the type of medications taken. The total explanatory power of the regression model was 22.7%. Social network (OR=0.93, p=.037) and the type of medication taken were 4~5 (OR=4.80, p=.014) and more than 6 medications (OR=7.84, p=.037) had a significant impact on readmission.
Conclusion
Social network was the most influential factor for readmission. Further studies are needed to minimize readmission by analyzing additional factors that show significant differences.
3.Childhood Diarrheal Diseases in North Korea: A Narrative Review on Research Topics and Treatments
Taehoon KIM ; Jieun JEON ; Hyungsoon AHN ; Jin Soo MOON
Journal of Korean Medical Science 2025;40(19):e70-
Background:
Diarrheal disease accounts for a large proportion of childhood deaths in North Korea, however, information regarding its management in North Korean clinical settings is limited. The absence of a reliable diarrheal disease database hinders efforts to determine priorities for support.
Methods:
Articles published in three major North Korean medical journals between 2012 and 2019 were analyzed to determine the clinical aspects of diagnosing and treating diarrhea. A total of 43 articles were identified during the screening process. Original articles and case reports focusing on the clinical features of diarrheal disease in the pediatric population were included.
Results:
The clinical features and markers of several types of diarrheal diseases, including infectious diarrhea (20.9%) and diarrhea due to indigestion or malabsorption (18.6%), were assessed. Healthcare providers used multiple treatment modalities, including rehydration solutions, antibiotics, probiotics, and vitamin supplementation. Therapeutic trials on North Korean Oriental medicine were also conducted in more than half of the studies (55.8%).
Conclusion
This review provides insights into understanding the types of diarrhea and unmet needs in clinical settings in North Korea. Follow-up studies are required to interpret the situation in detail.
4.Comparison of the Characteristics Between Readmitted and Non-Readmitted Elderly Heart Failure Patients: A Study on Outpatients at a University Hospital
Journal of Korean Clinical Nursing Research 2025;31(1):15-23
Purpose:
This study aimed to establish a basis for minimizing readmission of patients with heart failure by comparing their demographic, clinical, psychosocial, and behavioral characteristics based on the presence or absence of readmission.
Methods:
This retrospective descriptive study included 160 elderly patients with heart failure aged 60 years and older, who regularly visited the cardiovascular outpatient clinic in K hospital in Daegu.Data were collected from April to December 2021 using self-report questionnaires including the Lubben Social Network Scale, the Scale of Positive and Negative Experience, and European Heart Failure Self-care Behaviour 9-Item Tools, which were translated in the Korean context. IBM SPSS Statistics 25 was used for analysis, and descriptive statistics, χ2 test, Fisher’s exact test, t-test, and logistic regression analysis were conducted.
Results:
The factors that significantly affected the readmission of elderly patients with heart failure were social network and the type of medications taken. The total explanatory power of the regression model was 22.7%. Social network (OR=0.93, p=.037) and the type of medication taken were 4~5 (OR=4.80, p=.014) and more than 6 medications (OR=7.84, p=.037) had a significant impact on readmission.
Conclusion
Social network was the most influential factor for readmission. Further studies are needed to minimize readmission by analyzing additional factors that show significant differences.
5.Childhood Diarrheal Diseases in North Korea: A Narrative Review on Research Topics and Treatments
Taehoon KIM ; Jieun JEON ; Hyungsoon AHN ; Jin Soo MOON
Journal of Korean Medical Science 2025;40(19):e70-
Background:
Diarrheal disease accounts for a large proportion of childhood deaths in North Korea, however, information regarding its management in North Korean clinical settings is limited. The absence of a reliable diarrheal disease database hinders efforts to determine priorities for support.
Methods:
Articles published in three major North Korean medical journals between 2012 and 2019 were analyzed to determine the clinical aspects of diagnosing and treating diarrhea. A total of 43 articles were identified during the screening process. Original articles and case reports focusing on the clinical features of diarrheal disease in the pediatric population were included.
Results:
The clinical features and markers of several types of diarrheal diseases, including infectious diarrhea (20.9%) and diarrhea due to indigestion or malabsorption (18.6%), were assessed. Healthcare providers used multiple treatment modalities, including rehydration solutions, antibiotics, probiotics, and vitamin supplementation. Therapeutic trials on North Korean Oriental medicine were also conducted in more than half of the studies (55.8%).
Conclusion
This review provides insights into understanding the types of diarrhea and unmet needs in clinical settings in North Korea. Follow-up studies are required to interpret the situation in detail.
6.Comparison of the Characteristics Between Readmitted and Non-Readmitted Elderly Heart Failure Patients: A Study on Outpatients at a University Hospital
Journal of Korean Clinical Nursing Research 2025;31(1):15-23
Purpose:
This study aimed to establish a basis for minimizing readmission of patients with heart failure by comparing their demographic, clinical, psychosocial, and behavioral characteristics based on the presence or absence of readmission.
Methods:
This retrospective descriptive study included 160 elderly patients with heart failure aged 60 years and older, who regularly visited the cardiovascular outpatient clinic in K hospital in Daegu.Data were collected from April to December 2021 using self-report questionnaires including the Lubben Social Network Scale, the Scale of Positive and Negative Experience, and European Heart Failure Self-care Behaviour 9-Item Tools, which were translated in the Korean context. IBM SPSS Statistics 25 was used for analysis, and descriptive statistics, χ2 test, Fisher’s exact test, t-test, and logistic regression analysis were conducted.
Results:
The factors that significantly affected the readmission of elderly patients with heart failure were social network and the type of medications taken. The total explanatory power of the regression model was 22.7%. Social network (OR=0.93, p=.037) and the type of medication taken were 4~5 (OR=4.80, p=.014) and more than 6 medications (OR=7.84, p=.037) had a significant impact on readmission.
Conclusion
Social network was the most influential factor for readmission. Further studies are needed to minimize readmission by analyzing additional factors that show significant differences.
7.Childhood Diarrheal Diseases in North Korea: A Narrative Review on Research Topics and Treatments
Taehoon KIM ; Jieun JEON ; Hyungsoon AHN ; Jin Soo MOON
Journal of Korean Medical Science 2025;40(19):e70-
Background:
Diarrheal disease accounts for a large proportion of childhood deaths in North Korea, however, information regarding its management in North Korean clinical settings is limited. The absence of a reliable diarrheal disease database hinders efforts to determine priorities for support.
Methods:
Articles published in three major North Korean medical journals between 2012 and 2019 were analyzed to determine the clinical aspects of diagnosing and treating diarrhea. A total of 43 articles were identified during the screening process. Original articles and case reports focusing on the clinical features of diarrheal disease in the pediatric population were included.
Results:
The clinical features and markers of several types of diarrheal diseases, including infectious diarrhea (20.9%) and diarrhea due to indigestion or malabsorption (18.6%), were assessed. Healthcare providers used multiple treatment modalities, including rehydration solutions, antibiotics, probiotics, and vitamin supplementation. Therapeutic trials on North Korean Oriental medicine were also conducted in more than half of the studies (55.8%).
Conclusion
This review provides insights into understanding the types of diarrhea and unmet needs in clinical settings in North Korea. Follow-up studies are required to interpret the situation in detail.
8.Comparison of the Characteristics Between Readmitted and Non-Readmitted Elderly Heart Failure Patients: A Study on Outpatients at a University Hospital
Journal of Korean Clinical Nursing Research 2025;31(1):15-23
Purpose:
This study aimed to establish a basis for minimizing readmission of patients with heart failure by comparing their demographic, clinical, psychosocial, and behavioral characteristics based on the presence or absence of readmission.
Methods:
This retrospective descriptive study included 160 elderly patients with heart failure aged 60 years and older, who regularly visited the cardiovascular outpatient clinic in K hospital in Daegu.Data were collected from April to December 2021 using self-report questionnaires including the Lubben Social Network Scale, the Scale of Positive and Negative Experience, and European Heart Failure Self-care Behaviour 9-Item Tools, which were translated in the Korean context. IBM SPSS Statistics 25 was used for analysis, and descriptive statistics, χ2 test, Fisher’s exact test, t-test, and logistic regression analysis were conducted.
Results:
The factors that significantly affected the readmission of elderly patients with heart failure were social network and the type of medications taken. The total explanatory power of the regression model was 22.7%. Social network (OR=0.93, p=.037) and the type of medication taken were 4~5 (OR=4.80, p=.014) and more than 6 medications (OR=7.84, p=.037) had a significant impact on readmission.
Conclusion
Social network was the most influential factor for readmission. Further studies are needed to minimize readmission by analyzing additional factors that show significant differences.
9.Childhood Diarrheal Diseases in North Korea: A Narrative Review on Research Topics and Treatments
Taehoon KIM ; Jieun JEON ; Hyungsoon AHN ; Jin Soo MOON
Journal of Korean Medical Science 2025;40(19):e70-
Background:
Diarrheal disease accounts for a large proportion of childhood deaths in North Korea, however, information regarding its management in North Korean clinical settings is limited. The absence of a reliable diarrheal disease database hinders efforts to determine priorities for support.
Methods:
Articles published in three major North Korean medical journals between 2012 and 2019 were analyzed to determine the clinical aspects of diagnosing and treating diarrhea. A total of 43 articles were identified during the screening process. Original articles and case reports focusing on the clinical features of diarrheal disease in the pediatric population were included.
Results:
The clinical features and markers of several types of diarrheal diseases, including infectious diarrhea (20.9%) and diarrhea due to indigestion or malabsorption (18.6%), were assessed. Healthcare providers used multiple treatment modalities, including rehydration solutions, antibiotics, probiotics, and vitamin supplementation. Therapeutic trials on North Korean Oriental medicine were also conducted in more than half of the studies (55.8%).
Conclusion
This review provides insights into understanding the types of diarrhea and unmet needs in clinical settings in North Korea. Follow-up studies are required to interpret the situation in detail.
10.Comparison of Vendor-Provided Volumetry Software and NeuroQuant Using 3D T1-Weighted Images in Subjects with Cognitive Impairment: How Large is the Inter-Method Discrepancy?
Jieun CHUNG ; Hayoung KIM ; Yeonsil MOON ; Won-Jin MOON
Investigative Magnetic Resonance Imaging 2020;24(2):76-84
Background:
Determination of inter-method differences between clinically available volumetry methods are essential for the clinical application of brain volumetry in a wider context.Purpose: The purpose of this study was to examine the inter-method reliability and differences between the Siemens morphometry (SM) software and the NeuroQuant (NQ) software.
Materials and Methods:
MR images of 86 subjects with subjective or objective cognitive impairment were included in this retrospective study. For this study, 3D T1 volume images were obtained in all subjects using a 3T MR scanner (Skyra 3T, Siemens). Volumetric analysis of the 3D T1 volume images was performed using SM and NQ. To analyze the inter-method difference, correlation, and reliability, we used the paired t-test, Bland-Altman plot, Pearson’s correlation coefficient, intraclass correlation coefficient (ICC), and effect size (ES) using the MedCalc and SPSS software.
Results:
SM and NQ showed excellent reliability for cortical gray matter, cerebral white matter, and cerebrospinal fluid; and good reliability for intracranial volume, whole brain volume, both thalami, and both hippocampi. In contrast, poor reliability was observed for both basal ganglia including the caudate nucleus, putamen, and pallidum. Paired comparison revealed that while the mean volume of the right hippocampus was not different between the two software, the mean difference in the left hippocampus volume between the two methods was 0.17 ml (P < 0.001). The other brain regions showed significant differences in terms of measured volumes between the two software.
Conclusion
SM and NQ provided good-to-excellent reliability in evaluating most brain structures, except for the basal ganglia in patients with cognitive impairment.Researchers and clinicians should be aware of the potential differences in the measured volumes when using these two different software interchangeably.